CN107941273B - Live working safety early warning method and device - Google Patents
Live working safety early warning method and device Download PDFInfo
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Abstract
The invention discloses a live working safety early warning method and a device, comprising the following steps: setting the operation mode of live working personnel and live working environment parameter information; calculating the safe working distance of the live working personnel according to the set live working personnel working mode and live working environment parameters, and determining a safe working area and an alarm area; and when the electrical operating personnel surpass the alarm area, a safety alarm is given. By the live working safety early warning method and device, live working of live working personnel is monitored in real time and automatically warned, so that safety of the live working personnel can be effectively guaranteed.
Description
Technical Field
The invention relates to the field of live overhaul and maintenance of power transmission and transformation projects, in particular to a live operation safety early warning method and device.
Background
The live working safety distance refers to the minimum air distance which is required to be kept between a ground potential operator and a live body or between an equipotential operator and a grounding body in order to ensure personal safety. The basic principle for determining the minimum safe distance is to add a reasonable increment of human activity on the basis of the minimum electrical gap distance. The minimum safe distance can be obtained by carrying out a large number of tests on the true tower, and according to the test results, the power production department sets up corresponding power safe production regulations and determines the safe distance of live working under each voltage class.
However, in the process of implementing the invention, the inventor finds that the prior art has at least the following problems:
in the production work, an operator judges whether the operator is in a safety range according to corresponding electric power safety production regulations and the number of insulator pieces and the length of the cross arm, but the live working process is complex, the labor intensity is high, and the operator cannot pay attention to the condition of the operator at any time. Therefore, in actual operation, a live working person with abundant experience generally needs to be equipped to climb a tower and be located in a position beneficial to observing the live working person, the live working process is observed manually in real time, whether the live working person exceeds a safe distance is judged according to the experience, and oral alarm is given by the observing person to inform the live working person of the existence of a safe risk. The method has strong subjectivity, does not have objective and scientific numerical values as judgment bases, and has safety risk of judgment errors.
Therefore, how to provide a live working safety early warning method and device capable of real-time monitoring and automatic warning becomes a technical problem to be solved urgently.
Disclosure of Invention
In view of the above, the present invention provides a live working safety early warning method and device, which implement real-time monitoring and automatic warning of live working of a live working worker, so as to effectively ensure the safety of the live working worker.
Based on the above purpose, the invention provides a live working safety early warning method, which comprises the following steps:
setting the operation mode of live working personnel and live working environment parameter information;
calculating the safe working distance of the live working personnel according to the set live working personnel working mode and live working environment parameters, and determining a safe working area and an alarm area;
and when the electrical operating personnel surpass the alarm area, a safety alarm is given.
The method of the present invention, wherein,
the working mode of the live working personnel is an equipotential working mode or a ground potential working mode;
the live working environment parameter information includes: pole tower parameter information and voltage grade information of the high-voltage transmission line or current environment humidity parameter information, current environment temperature parameter information, current environment wind speed parameter information and current altitude parameter information of live working.
The method of the present invention, wherein,
and the determined alarm area is a distance parameter between a preset safety operation area and the alarm area, and the alarm area is determined in the calculated and determined safety operation area.
The method of the invention further comprises the following steps:
setting the working mode of live working personnel to be an equipotential working mode, high-voltage transmission line tower parameter information, voltage grade information, live working current environment humidity parameter information, current environment temperature parameter information, current environment wind speed parameter information and current altitude parameter information, and setting distance parameter information between a safe working area and an alarm area;
according to the configured equipotential operation mode, the high-voltage transmission line tower parameter information, the voltage grade information, the live-line operation current environment humidity parameter information, the current environment temperature parameter information, the current environment wind speed parameter information and the current altitude parameter information, calculating the safe operation distance between an equipotential operator and the high-voltage transmission line tower and the cross arm, determining a safe operation area, and according to the set distance parameter information between the safe operation area and the alarm area, determining the alarm area in the safe operation area;
and when the equipotential operating personnel exceed the alarm area, sending a safety alarm signal.
The method of the invention further comprises the following steps:
setting the working mode of live working personnel to be a ground potential working mode, high-voltage transmission line tower parameter information, voltage grade information, live working current environment humidity parameter information, current environment temperature parameter information, current environment wind speed parameter information and current altitude parameter information, and setting distance parameter information between a safe working area and an alarm area;
according to the configured ground potential operation mode, the pole tower parameter information and the voltage grade information of the high-voltage transmission line, the current environment humidity parameter information, the current environment temperature parameter information, the current environment wind speed parameter information and the current altitude parameter information of live working, calculating the safe operation distance between a ground potential operator and the high-voltage transmission line, determining a safe operation area, and according to the set distance parameter information between the safe operation area and the alarm area, determining the alarm area in the safe operation area;
when the ground potential operator exceeds the alarm area, a safety alarm signal is sent out.
The method of the invention further comprises the following steps:
and acquiring a depth image of the live working personnel, comparing physical parameters of the rope curve, and eliminating rope false alarm.
Based on the above purpose, the invention also provides a live working safety early warning device, which is located on a high-voltage line tower, and comprises:
the live working safety early warning initialization unit is used for setting the working mode of live working personnel and the live working environment parameter information;
the safety operation area and alarm area determining unit is used for calculating the safety operation distance of the live working personnel according to the live working personnel operation mode and the live working environment parameters set by the live working safety early warning initialization unit and determining a safety operation area and an alarm area;
and the alarm judging unit is used for detecting the live working personnel in real time and sending out a safety alarm signal when the live working personnel surpass the alarm area.
The apparatus of the present invention, wherein,
the live working safety early warning initialization unit is further used for setting the working mode of live working personnel to be an equipotential working mode or a ground potential working mode; and setting the live working environment parameter information includes: pole tower parameter information and voltage grade information of the high-voltage transmission line or current environment humidity parameter information, current environment temperature parameter information, current environment wind speed parameter information and current altitude parameter information of live working.
The apparatus of the present invention, wherein,
the live working safety early warning initialization unit is further used for setting a distance parameter between a safety working area and a warning area;
the safety operation area and alarm area determining unit is further used for determining an alarm area in the safety operation area according to the distance parameter between the safety operation area and the alarm area set by the live-wire work safety early warning initializing unit.
The apparatus of the present invention, wherein,
the live working safety early warning initialization unit is further used for setting the working mode of live working personnel to be an equipotential working mode, high-voltage transmission line tower parameter information, voltage grade information, live working current environment humidity parameter information, current environment temperature parameter information, current environment wind speed parameter information and current altitude parameter information, and setting distance parameter information between a safety working area and a warning area;
and the safety operation area and alarm area determining unit is further used for calculating the safety operation distance between the equipotential operation personnel and the high-voltage transmission line tower and the cross arm according to the equipotential operation mode, the high-voltage transmission line tower parameter information and the voltage grade information which are configured by the live-line operation safety early warning initialization unit, as well as the current environment humidity parameter information, the current environment temperature parameter information, the current environment wind speed parameter information and the current altitude parameter information of live-line operation, determining the safety operation area, and determining the alarm area in the safety operation area according to the set distance parameter information between the safety operation area and the alarm area.
The apparatus of the present invention, wherein,
the live working safety early warning initialization unit is further used for setting the working mode of live working personnel to be a ground potential working mode, high-voltage transmission line tower parameter information, voltage grade information, live working current environment humidity parameter information, current environment temperature parameter information, current environment wind speed parameter information, current altitude parameter information and distance parameter information between a safety working area and an alarm area;
and the safety operation area and alarm area determining unit is further used for calculating the safety operation distance between ground potential operation personnel and the high-voltage wire according to the ground potential operation mode, the high-voltage transmission line tower parameter information, the voltage grade information, the live-line operation current environment humidity parameter information, the current environment temperature parameter information, the current environment wind speed parameter information and the current altitude parameter information which are configured by the live-line operation safety early warning initializing unit, determining the safety operation area, and determining the alarm area in the safety operation area according to the distance parameter information between the safety operation area and the alarm area which is set by the live-line operation safety early warning initializing unit.
And the rope judging unit is used for acquiring the depth image of the live working personnel, comparing the physical parameters of the rope curve and judging whether the rope is in interference.
From the above, the live working safety early warning method and device provided by the invention have the advantages that the working mode of the live working personnel and the live working environment parameter information are set; calculating the safe working distance of the live working personnel according to the set working mode of the live working personnel and the current environment parameter information of the live working, and determining a safe working area and an alarm area; and when the electrical operating personnel surpass the alarm area, a safety alarm is given. The real-time monitoring and automatic alarm of the live working personnel are realized, so that the safety of the live working personnel is effectively guaranteed.
Drawings
FIG. 1 is a flowchart of an embodiment of a safety pre-warning method for live working according to the present invention;
FIG. 2 is a flowchart illustrating a safety pre-warning method for live working according to another embodiment of the present invention;
FIG. 3 is a schematic diagram of an alarm area in an embodiment of a live working safety early warning method of the present invention;
FIG. 4 is a flow chart of a warning for eliminating rope interference according to an embodiment of the pre-warning method for safety of live working of the present invention;
FIG. 5 is a block diagram of an embodiment of a safety pre-warning device for live working according to the present invention;
FIG. 6 is a schematic diagram of a safe operation area and an alarm area in an equipotential operation mode according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a safe operation area and an alarm area in a ground potential operation mode according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.
Example one
Referring to fig. 1, a flowchart illustrating steps of a safety pre-warning method for live working according to an embodiment of the present invention is shown.
The live working safety early warning method of the embodiment comprises the following steps:
step 101: setting the operation mode of live working personnel and live working environment parameter information; for example, the operation mode of the operator with the point is an equipotential operation mode or a ground potential operation mode; the set live working environment parameters include: the high-voltage transmission line tower parameter information and the voltage grade information can also be set with the current live working environment parameter information, such as: the current environment humidity parameter information, the current environment temperature parameter information, the current environment wind speed parameter information and the current altitude parameter information of live-line work all affect the safety of live-line work personnel; setting a distance parameter between the safe operation area and the alarm area;
in this step, the live working safety distance is H, the current ambient temperature is T, the current ambient humidity is RH, the current ambient wind speed is v, and the current altitude is H. By changing four parameters of T, RH, v and H and field test, different voltage grades are respectively tested on site, and finally the relation between the safety distance H and each factor is obtained as follows: h ═ f (T, RH, v, H). For example, firstly, establishing a true tower test model, and obtaining test data of the relation between the safety distance H and each factor according to the principle of a single variable method; then, using a large amount of obtained test data, and finding out the weight corresponding to each factor by adopting an analytic hierarchy process; finally, based on the weights, the safe distance H is obtained as f (T, RH, v, H) in relation to the factors.
Step 102: calculating the safe operation distance of the live working personnel according to the set live working personnel operation mode and live working environment parameters, determining a live working safe region and an alarm region, monitoring and judging whether the live working personnel exceeds the alarm region in real time, and executing the step 103 if the live working personnel exceeds the alarm region: otherwise, continue to step 102;
in this step, after the live working safety area is determined according to the calculated safety working distance of the live working personnel, the alarm area is determined in the safety working area according to the distance parameter between the safety working area and the alarm area set in step 101.
Step 103: and when the electrical operating personnel surpass the alarm area, a safety alarm is given. Here, the warning sound can be directly sent to the live working personnel to prompt the working personnel to pay attention to safety. The alarm signal can be sent to the safety control center, and the safety control center sends an alarm to the operator. Or when an alarm signal is sent to the live working personnel, the alarm is reported to the safety control center at the same time, and the reason and the type of the alarm are reported, so that the subsequent live working personnel can analyze the dangerous reason, improve the safety working capacity and strengthen the safety work.
Specifically, in this embodiment, when the operation mode of the live-wire operator is the equipotential operation mode, the operation mode of the live-wire operator is set to be the equipotential operation mode, and parameter information and voltage level information of the high-voltage transmission line tower are set in step 101; the method can also be used for measuring and setting current environment humidity parameter information, current environment temperature parameter information, current environment wind speed parameter information and current altitude parameter information of live-wire work, wherein the environment humidity, temperature, wind speed and altitude parameters are also factors influencing safety work, and test data of the relation between the safety distance and each factor is obtained by establishing a true tower test model according to the principle of a single variable method; then, using a large amount of obtained test data, and finding out the weight corresponding to each factor by adopting an analytic hierarchy process; finally, based on each weight, obtaining a relation of the safety distance and each factor as H ═ f (T, RH, v, H); setting a distance parameter between the safe operation area and the alarm area; step 102: according to the configured equipotential operation mode, pole and tower parameter information of the high-voltage transmission line and voltage grade information, establishing a true tower test model, and according to the principle of a single variable method, obtaining test data of the relation between the safety distance H and each factor; then, using a large amount of obtained test data, and finding out the weight corresponding to each factor by adopting an analytic hierarchy process; finally, based on the weights, obtaining a relation formula of the safe distance H and each factor as H ═ f (T, RH, v, H), and calculating the safe operation distance between the equipotential operator and the high-voltage transmission line tower and the cross arm; determining a safe operation area, and determining an alarm area in the safe operation area according to the distance parameter between the safe operation area and the alarm area set in the step 101; step 103: monitoring and judging whether the equipotential operating personnel exceeds an alarm area in real time, and if so, sending a safety alarm signal; otherwise, step 102 is performed.
In addition, in this embodiment, when the working mode of the live-wire operator is the ground potential working mode, the working mode of the live-wire operator is set to be the ground potential working mode, the parameter information of the high-voltage transmission line tower and the voltage grade information in step 101; similarly, current environment humidity parameter information, current environment temperature parameter information, current environment wind speed parameter information and current altitude parameter information of live-line work can be measured and set, and test data of the relation between the safe distance H and each factor can be obtained by establishing a true tower test model according to the principle of a single variable method; then, using a large amount of obtained test data, and finding out the weight corresponding to each factor by adopting an analytic hierarchy process; finally, based on each weight, obtaining a relation of the safe distance H and each factor as H ═ f (T, RH, v, H); setting a distance parameter between the safe operation area and the alarm area; step 102: according to the configured ground potential operation mode, pole tower parameter information and voltage grade information of the high-voltage transmission line, current environment humidity parameter information, current environment temperature parameter information, current environment wind speed parameter information and current altitude parameter information of live-line operation, calculating a safe operation distance between a ground potential operator and the high-voltage transmission line, determining an operation safe region, and according to the distance parameter between the safe operation region and the alarm region set in the step 101, determining the alarm region in the safe operation region; step 103: monitoring and judging whether the ground potential operator exceeds the alarm area in real time, and if so, sending a safety alarm signal; otherwise, step 102 is performed.
In the present embodiment, the first and second electrodes are,
according to the live working safety early warning method, the working mode of a live working worker, the live working environment parameter information and the distance parameter information between a safety working area and an alarm area are preset; calculating the safe operation distance of the live working personnel, determining a safe operation area and an alarm area, monitoring and judging whether the live working personnel exceeds the alarm area in real time, and sending out a safety alarm when the live working personnel exceeds the alarm area. The real-time monitoring and automatic alarm of the live working personnel are realized, so that the safety of the live working personnel is effectively guaranteed.
Example two
Referring to fig. 2, a flowchart of another embodiment of the live working safety warning method of the present invention is shown.
The live working safety early warning method of the embodiment is executed in a depth camera, and specifically comprises the following steps:
step 201: setting the parameters of the high-voltage transmission line tower and the high-voltage live-line operation mode according to the selected live-line operation tower and the voltage grade, and automatically calculating the safety monitoring direction and the alarm threshold value Dthr；
Step 202: initializing a depth camera, and acquiring depth information of a live working site in real time to generate a depth image Img;
step 203: determine whether a new monitoring area is set? If yes, go to step 204; if not, go to step 205.
For equipotential operation, the alarm area is a first alarm area. The live-wire worker is set to be located inside the first warning area, and at this time, whether the worker crosses the boundary of the warning area 1 or not is monitored.
For equipotential operation, the alarm area is a first alarm area. And setting the live working personnel to be positioned in the first alarm area, and monitoring whether the working personnel can cross the boundary of the first alarm area or not.
For site operations, the alarm area is a second alarm area. And setting the live working personnel to be positioned outside the second alarm area, and monitoring whether the live working personnel invades the boundary of the second alarm area or not.
Step 204: and setting an alarm area according to the depth image Img. The alarm area is an area set, and the generation method of the area set comprises the following steps:
as shown in fig. 3, 4 alarm area control lines parallel to the end face of the depth camera and closest to the depth camera are selected, namely line a, line B, line C and line D, and the alarm area control line perpendicular to the end face of the depth camera is selected and designated as line E;
taking the line A as a central line to form a rectangular RA, wherein the rectangular RA is parallel to the end face of the depth camera, the length of the rectangular RA is equal to that of the line A, the width of the rectangular RA is a constant, the width of the rectangular RA can be set to be 10 cm, and the rectangular RA can be modified as required;
and expanding in the direction of the line E by taking the rectangle RA as a reference surface to form a cuboid CA, wherein the height of the cuboid CA is the expanded length, namely the length of the line E.
Respectively generating rectangles RB, RC and RD by taking the line B, the line C and the line D as central lines by the same method; rectangular RB, RC and RD are used for generating cuboids CB, CC and CD.
The cuboids CA, CB, CC, CD constitute a first monitoring area.
A second monitoring zone is similarly constructed at the safe zone control line in the same manner.
Step 205: acquiring depth data of a monitoring area;
step 206: calculating a set of depth information { D) for monitoring regions 1 and 2 from the depth data1And { D }2}；
Step 207: determining a set of depth information { D1And { D }2Whether any of the values exceeds an alarm threshold DthrIs there a And separately count the set { D1And { D }2The number of points with non-zero depth values C1 and C2. If yes, go to step 208; if not, go to step 209;
step 208: and calculating the alarm intensity S according to the quantity C, and performing alarm of different levels according to different alarm intensities S by an audible and visual alarm device.
The alarm intensity is calculated by the method of S ═ C1 × 0.65+ C2 × 0.35) × 100.
The alarm grade G is divided into three grades, namely a grade G1, a grade G2 and a grade G3, wherein the higher the alarm grade is, the greater the risk is, and the higher the frequency of the alarm sound of the sound-light alarm device is. The alarm grade G is divided according to the size of S according to the following basis:
step 209: and transmitting the information to a monitoring center.
Step 210: determine whether to end monitoring? If yes, stopping monitoring, and ending the process; if not, go to step 202.
EXAMPLE III
Considering that in actual live working, more live working ropes possibly interfere with live working monitoring, the invention designs a method for eliminating the interference of the live working ropes.
Referring to fig. 4, a flow chart of an embodiment of a live working safety early warning method for eliminating rope interference alarms is shown, and each frame of depth image Img is processed, and the method includes the following steps:
step 401: a depth image Img is acquired.
Step 402: a curve detection algorithm is performed on the depth image Img.
Step 403: determine if a curve exists?
If yes, go to step 404;
if not, the process is ended.
Step 404: the curve in the depth image Img is extracted.
Step 405: matching the parameters of the curve according to the physical parameters of the rope and the depth information of the rope in the depth image Img, judging whether the parameters are matched, and if so, executing a step 406; if not, the process ends.
Step 406: the curve is excluded to avoid the interference generated by the curve, and the alarm is not started.
Through the embodiment, the condition of error alarm possibly generated by the system when the rope enters the alarm area is eliminated, and the alarm accuracy is improved.
Example four
Referring to fig. 5, a block diagram of an embodiment of a live working safety precaution device of the present invention is shown.
The utility model provides a live working safety precaution device, can be one and be located high-tension band line tower and have infrared range finding or the degree of depth camera of laser rangefinder function, includes: the system comprises a live working safety early warning initialization unit, a safety working area and alarm area determination unit and an alarm judgment unit.
The live working safety early warning initialization unit sets the working mode of live working personnel and the live working environment parameter information; wherein the working mode of the live working personnel is set to be an equipotential working mode or a ground potential working mode; and setting the live working environment parameter information includes: pole tower parameter information and voltage grade information of the high-voltage transmission line or current live working environment humidity parameter information; in addition, a distance parameter between the safe operation area and the alarm area is set.
The safety operation area and alarm area determining unit calculates the safety operation distance of the live working personnel according to the live working personnel operation mode and the live working environment parameters set by the live working safety early warning initialization unit, and determines a safety operation area and an alarm area; specifically, the safety operation area and alarm area determining unit determines the alarm area in the safety operation area according to the distance parameter between the safety operation area and the alarm area set by the hot-line work safety early warning initializing unit.
The alarm judging unit detects live working personnel in real time and sends out a safety alarm signal when the live working personnel surpass an alarm area.
In this embodiment, when the live working safety early warning initialization unit sets the working mode of the live working personnel to be an equipotential working mode, and sets the pole tower parameter information, the voltage level information, the current live working environment humidity parameter information of the high-voltage transmission line, and sets the distance parameter information between the safety working area and the warning area.
And the safe operation area and alarm area determining unit calculates the safe operation distance between the equipotential operation personnel and the high-voltage transmission line tower and the cross arm according to the equipotential operation mode, the high-voltage transmission line tower parameter information, the voltage grade information and the current live-line operation environment humidity parameter information configured by the live-line operation safety early warning initialization unit, determines the safe operation area, and determines the alarm area in the safe operation area according to the set distance parameter information between the safe operation area and the alarm area.
The alarm judging unit detects live working personnel in real time and sends out a safety alarm signal when the live working personnel surpass an alarm area. Here, the alarm determination unit may directly give an alarm sound to the live working person to prompt the working person to pay attention to safety. The alarm signal can be sent to the safety control center, and the safety control center sends an alarm to the operator. Or when an alarm signal is sent to the live working personnel, the alarm is reported to the safety control center at the same time, and the reason and the type of the alarm are reported, so that the subsequent live working personnel can analyze the dangerous reason, improve the safety working capacity and strengthen the safety work.
In this embodiment, when the live working safety early warning initialization unit sets the working mode of the live working personnel to be the ground potential working mode, and sets the pole tower parameter information, the voltage level information, the current live working environment humidity parameter information of the high-voltage transmission line and sets the distance parameter information between the safety working area and the warning area.
And the safety operation area and alarm area determining unit calculates the safety operation distance between the ground potential operation personnel and the high-voltage wire according to the ground potential operation mode, the high-voltage transmission line tower parameter information, the voltage grade information and the current live-working environment humidity parameter information configured by the live-working safety early warning initialization unit, determines the safety operation area, and determines the alarm area in the safety operation area according to the distance parameter information between the safety operation area and the alarm area set by the live-working safety early warning initialization unit.
The alarm judging unit detects live working personnel in real time and sends out a safety alarm signal when the live working personnel surpass an alarm area. Also, here, the alarm determination unit may directly give an alarm sound to the live working person to prompt the working person to pay attention to safety. The alarm signal can be sent to the safety control center, and the safety control center sends an alarm to the operator. Or when an alarm signal is sent to the live working personnel, the alarm is reported to the safety control center at the same time, and the reason and the type of the alarm are reported, so that the subsequent live working personnel can analyze the dangerous reason, improve the safety working capacity and strengthen the safety work.
In addition, in this embodiment, a rope determination unit may be further included, which is configured to acquire a depth image of the live-working operator, compare physical parameters of a rope curve, and determine whether the rope is a rope disturbance. The steps described in the third embodiment are specifically executed, and the condition of false alarm caused by the rope is eliminated.
EXAMPLE five
Fig. 6 is a schematic diagram illustrating a safe operation area and an alarm area in an equipotential operation mode according to an embodiment of the present invention.
When the live working personnel works in an equipotential working mode, the method of the invention combines corresponding safety distances to define two boundary lines, one is an alarm area control line, an area shown in a dotted line in fig. 6, a first alarm area, one is a safety working area control line, an area shown in a solid line in fig. 6, and a first safety working area.
If the corresponding minimum safety distance is H, the distance between the equipotential operating personnel and the upper boundary of the safety region 1 can be set to be 0.8(H-H), and the distance between the equipotential operating personnel and the upper boundary of the first alarm region can be set to be (H-H); the distance from the left boundary of the first safety work area may be set to 0.8(S-h), and the distance from the left boundary of the first warning area may be set to (S-h).
That means that in the depth camera the monitoring area is set to the first alerting area. And when the equipotential operating personnel contact the first alarm area, alarming is started.
Since the right and lower boundaries in fig. 6 have no ground contact member, but the operator can move only on the wire, the distance from the lower boundary can be set with reference to the distance from the upper boundary, and the distance from the right boundary can be set with reference to the lower boundary.
EXAMPLE six
Referring to fig. 7, a schematic diagram of a safe operation area and an alarm area in a ground potential operation mode according to an embodiment of the present invention is shown.
When live working personnel work in a ground potential working mode, two boundary lines can be still defined by combining the safety distance, one boundary line is an alarm area control line, and the other boundary line is a dangerous area control line.
If the corresponding minimum safety distance is h, the distance between the depth camera and the left boundary of the danger area can be set to be S-h, and the distance between the depth camera and the left boundary of the second alarm area can be set to be 0.8 (S-h); the distance between the upper boundary of the danger area and the cross arm can be set to be H-H, and the distance between the upper boundary of the second alarm area and the cross arm can be set to be 0.8(H-H).
That is, the depth camera sets the monitoring area as the second warning area, and the local potential operator enters the warning area to start warning.
In fact, two positions which need to be noticed by an operator according to the ground potential still exist, namely a live-wire operator is positioned at a cross arm side insulator hanging point; and secondly, live working personnel are positioned at the position where the tower body of the tower is parallel to the conducting wire.
When live working personnel are at the hanging point of the insulator on the cross arm side and the tower body parallel to the conducting wire, the distance from the equipotential, namely the high-voltage wire, is the minimum. Corresponding to fig. 7, H is the distance between the cross arm side insulator hanging point and the high-voltage wire, and S is the distance between the tower body and the tower body parallel to the high-voltage wire.
Therefore, when the dangerous area is divided, only one cuboid taking both H and S into consideration needs to be defined, and therefore only one dangerous area is defined.
During live working, generally equipotential and ground potential are matched, two alarm areas are set at the moment, the first alarm area is responsible for monitoring potential workers, and the second alarm area is responsible for monitoring the ground potential workers. Even if only equipotential or earth potential workers are present, both work areas can still be used.
In addition, in the case of crossing, doubling, etc., the lower boundary line and the right boundary line of the region can be defined as the actual case.
The live working safety early warning device of this embodiment is used to implement a corresponding live working safety early warning method in the first to third embodiments, and has the beneficial effects of the corresponding method embodiments, which are not described herein again.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
In addition, well known power/ground connections to integrated circuit IC chips and other components may or may not be shown within the provided figures for simplicity of illustration and discussion, and so as not to obscure the invention. Furthermore, devices may be shown in block diagram form in order to avoid obscuring the invention, and this also takes into account the fact that specifics with respect to implementation of such block diagram devices are highly dependent upon the platform within which the present invention is to be implemented. That is, such details should be well within the understanding of those skilled in the art. Where specific details are set forth, such as circuits, in order to describe example embodiments of the invention, it will be apparent to one skilled in the art that the invention may be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative instead of restrictive.
While the present invention has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art in light of the foregoing description. For example, other memory architectures, such as dynamic RAM, may use the discussed embodiments.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (2)
1. A live working safety early warning method is characterized by being executed in a depth camera and comprising the following steps:
setting the operation mode of live working personnel and live working environment parameter information; calculating the safe working distance of the live working personnel according to the set live working personnel working mode and live working environment parameters, and determining a safe working area and an alarm area;
the working mode of the live working personnel is set to be an equipotential working mode or a ground potential working mode, for the equipotential working mode, the corresponding alarm area is a first alarm area, and for the ground potential working mode, the corresponding alarm area is a second alarm area;
the method for generating the first alarm area is that,
selecting four alarm area control lines which are parallel to the end face of the depth camera and are closest to the depth camera, namely a line A, a line B, a line C and a line D, selecting an alarm area control line which is perpendicular to the end face of the depth camera, and determining the alarm area control line as a line E;
taking the line A as a central line to form a rectangle RA, wherein the rectangle RA is parallel to the end face of the depth camera, the length of the rectangle RA is equal to that of the line A, and the width of the rectangle RA is a constant;
expanding in the direction of a line E by taking the rectangle RA as a reference surface to form a cuboid CA, wherein the height of the cuboid CA is the length of the line E;
respectively generating rectangles RB, RC and RD by taking the line B, the line C and the line D as central lines, generating cuboids CB, CC and CD by the rectangles RB, RC and RD, and forming a first monitoring area by the cuboids CB, CC and CD;
generating a second monitoring area corresponding to the second alarm area in the same manner as the first monitoring area;
acquiring depth data of a first monitoring area and a second monitoring area;
calculating sets of depth information { D1} and { D2} for the first and second surveillance zones from the depth data;
judging whether elements in the { D1} and the { D2} exceed an alarm threshold value or not, and respectively counting the number of points with nonzero depth values in the { D1} and the { D2} C1 and C2; calculating the alarm intensity according to C1 and C2;
when the electric operating personnel surpass the alarm area, a safety alarm is sent out according to the alarm intensity;
acquiring a depth image of a live working worker, and executing a curve detection algorithm on the depth image to obtain a detection result;
if the curve exists in the detection result, extracting the curve in the depth image; and matching the parameters of the curve according to the physical parameters of the rope and the depth information of the rope in the depth image, and if the parameters of the curve are matched, excluding the curve.
2. The utility model provides a live working safety precaution device, is located high-tension band line shaft tower, its characterized in that includes:
the live working safety early warning initialization unit is used for setting the working mode of live working personnel and the live working environment parameter information;
a safe operation area and alarm area determining unit for calculating the safe operation distance of the live working personnel according to the live working personnel operation mode and the live working environment parameters set by the live working safety early warning initializing unit, determining the safe operation area and the alarm area,
the working mode of the live working personnel is set to be an equipotential working mode or a ground potential working mode, for the equipotential working mode, the corresponding alarm area is a first alarm area, and for the ground potential working mode, the corresponding alarm area is a second alarm area;
the method for generating the first alarm area is that,
selecting four alarm area control lines which are parallel to the end face of the depth camera and are closest to the depth camera, namely a line A, a line B, a line C and a line D, selecting an alarm area control line which is perpendicular to the end face of the depth camera, and determining the alarm area control line as a line E;
taking the line A as a central line to form a rectangle RA, wherein the rectangle RA is parallel to the end face of the depth camera, the length of the rectangle RA is equal to that of the line A, and the width of the rectangle RA is a constant;
expanding in the direction of a line E by taking the rectangle RA as a reference surface to form a cuboid CA, wherein the height of the cuboid CA is the length of the line E;
respectively generating rectangles RB, RC and RD by taking the line B, the line C and the line D as central lines, generating cuboids CB, CC and CD by the rectangles RB, RC and RD, and forming a first monitoring area by the cuboids CB, CC and CD;
generating a second monitoring area corresponding to the second alarm area in the same manner as the first monitoring area;
acquiring depth data of a first monitoring area and a second monitoring area;
calculating sets of depth information { D1} and { D2} for the first and second surveillance zones from the depth data;
judging whether elements in the { D1} and the { D2} exceed an alarm threshold value or not, and respectively counting the number of points with nonzero depth values in the { D1} and the { D2} C1 and C2; calculating the alarm intensity according to C1 and C2;
the alarm judging unit is used for detecting live working personnel in real time and sending out a safety alarm signal according to the alarm intensity when the live working personnel surpass an alarm area;
an image processing unit configured to: acquiring a depth image of a live working worker, and executing a curve detection algorithm on the depth image to obtain a detection result;
if the curve exists in the detection result, extracting the curve in the depth image; and matching the parameters of the curve according to the physical parameters of the rope and the depth information of the rope in the depth image, and if the parameters of the curve are matched, excluding the curve.
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