JP2000242327A - Logging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To omit electric wiring and to gather data fast by providing a logging data gathering means which records the display state of a display means displaying the control data execution state of a control means. SOLUTION: The logging device 11 obtains image information corresponding to the control information of a PLC 13 from a CCD camera 14 and records and reproduces the image information. When reproduction is requested, the obtained image information is displayed out on a display 15. The PLC 13 controls the all operation of the object facilities 12 which are monitored and the control data of the PLC 13 having controlled object facilitates 12 which are monitored are led as logging data to the logging device 11 and logged. At this time, when the logging data of the PLC 13 are gathered at the logging device 11, they are gathered through not a leased communication wire, but optical communication. The control data execution state of the PLC can be gathered fast at a remote place by being displayed like a light signal, so the data can be recorded at a high speed irrelevantly to the manufacturer and kind of the PLC.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a logging device for maintaining and managing monitored equipment such as an automated manufacturing apparatus, and more particularly, to collect data of monitored equipment by omitting electrical wiring. Related to a logging device that can.

[0002]

2. Description of the Related Art Generally, as a method of analyzing a trouble of a monitored facility, it is necessary to accurately record operation information on how the monitored facility has moved. As this recording means, the monitored equipment to be monitored is controlled by a controller, process data of the controller is collected by a monitoring device via data communication means, and image data of the monitored equipment collected by a camera or a microphone is collected. And sound data as a recording target and record them in the monitoring device, and in response to a user's request for reproduction, process data recorded by the monitoring device, image data, and sound data are reproduced and analyzed on the display and speaker. Monitoring devices are known.

In this case, data communication between the controller and the monitoring device is performed by data communication means such as general-purpose serial communication, or an input of the monitoring device is electrically connected to an I / O contact of the controller. .

[0004]

However, in such a communication connection method, (1) when data communication means is used, it takes a certain time until data collection from the controller is completed, and high-speed recording cannot be performed. . In addition, it is necessary to develop a dedicated communication protocol for each controller maker, and simple communication connection means cannot be obtained. (2) In the case of electrical connection, connection of the wiring connection means is complicated, and the connection itself may cause a failure.

Therefore, the present invention focuses on acquiring data of the control means using a display means when logging control data of the control means for controlling the equipment to be monitored. It is an object of the present invention to provide a logging device which can omit electrical wiring connection between them and can collect data at high speed.

[0006]

According to the first aspect of the present invention,
What is claimed is: 1. A logging device which records an operation state of a monitoring target facility in accordance with a time transition, and a logging data collection unit which records a display state of a display unit which displays a control data execution state of a control unit which controls the monitoring target facility. It is characterized by having.

[0007]

According to the present invention, the execution state of the control data of the control means for controlling the equipment to be monitored by the logging data collection means is displayed on the display means, and the display state is collected and recorded. Since it has an effect, the operation state of the monitored facility can be converted into display data and data can be collected.

As a result, the control data execution state of the control means can be displayed as an optical signal and data can be collected at a high speed from a remote position. Therefore, regardless of the manufacturer and model of the control means,
The control data execution state of the control means can be recorded at high speed.

For example, if a large number of LEDs are arranged and arranged on the I / O unit side of the control means, and these are imaged by the imaging means, and the luminance data indicating whether the light is on or off and the display position thereof are detected. , Can be handled optically as a display signal, so that the execution state of the control data can be grasped at high speed.

Further, since the I / O state of the control means is recorded by an optically captured image, the display means itself does not adversely affect the operation of the control means, and the physical wiring connection can be omitted, so that the display means is complicated. Installation processing can be omitted, and data communication means and complicated connection can be omitted.
In particular, since data can be collected at high speed, a record corresponding to the operation of the monitored equipment at high speed can be recorded, and from this record, the high-speed operation state of the monitored equipment and the cause of trouble can be clearly analyzed. .

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. [First Embodiment] FIG. 1 shows an example of a logging system provided with a logging device. This logging system comprises a logging device 11, a monitoring target facility 12 to be logged,
A PLC 13 for controlling the equipment 12 to be monitored;
It comprises a camera 14 and a display 15.

The logging device 11 acquires image information corresponding to the control information of the PLC 13 from the CCD camera 14, and records / reproduces the acquired image information. Then, the image information acquired at the time of the reproduction request is displayed on the display 15.

The monitoring target facility 12 is an automation facility such as an automated manufacturing apparatus to be logged, and the monitoring target facility 12 is controlled by the PLC 13.

The PLC 13 controls all operations of the monitored equipment 12, and controls the PLC 13 which controls the monitored equipment 12.
Of the logging device 11 as the logging data
It is guided and logged. At this time, when collecting the logging data of the PLC 13 in the logging device 11, the logging data is collected optically instead of being connected through dedicated communication wiring.

For example, as shown in FIG. 2, a large number of LEDs are connected to the I / O input unit 21 exposed on the outer surface of the PLC 13.
22 are arranged vertically and horizontally, and are centrally arranged. These are individually turned on and off, and are displayed and output from the outside so as to be optically identifiable. These 1st LED to nth LED
The display state of all the LEDs 22...

The CCD camera 14 is disposed at an image acquisition position where the entire group of LEDs 22... Is imaged collectively, thereby acquiring an image of the ON / OFF state for each imaged LED 22. Data is input to the logging device 11 and recorded.

The display 15 displays and outputs the LED image acquisition data acquired by the logging device 11 in response to a reproduction request. For example, as shown in the time chart of FIG. 3, image acquisition data in the ON / OFF state is displayed for each position of each LED 22. This is because the numbers specified for each arrangement position are assigned in order, and the LE corresponding to the arrangement position of the LED is set.
D data is output. Thereby, it is possible to confirm from the display screen of the display 15 whether the LED at the display position corresponding to the control data of the PLC 13 is on or off.

Next, a control circuit block diagram of the logging device 11 will be described with reference to FIG. This logging device 11
Is a recording condition setting unit 41, an LED recognition unit 42, an input control unit 43, a primary file 44, a trigger detection unit 45
, A data editing unit 46, a log file 47, and a log reproducing unit 48.

The recording condition setting section 41 has a trigger condition,
Recording conditions such as a recording cycle and a recording time are set by the user, and the recording conditions set here are input control unit 4.
3, transmitted to the trigger detection unit 45 and the data editing unit 48.

The LED recognizing unit 42 controls the I / O of the PLC 13
ON / OFF of each LED 22 provided in the input unit 21
The OFF state is imaged by the CCD camera 14, and the image acquisition data of the imaged LED is recognized. Then, it transfers the recognized image acquisition data to the input control unit 43.

After starting the logging device 11, the input control unit 43 executes the following every recording cycle set by the recording condition setting unit 41.
LED image acquisition data is acquired from the LED recognition unit 42. Then, the acquired data is stored in the temporary file 44 corresponding to the designated recording time.

The input control unit 43 includes a trigger detection unit 45.
When a trigger input signal indicating that a trigger has been detected is received, input is stopped after a specified recording time has elapsed, output to the primary file 44 is also stopped, and input completion is notified to the data editing unit 46. .

The trigger detection unit 45 detects a recording start trigger of the logging device 11 and monitors whether the trigger input is the trigger input set by the recording condition setting unit 41. When the trigger detection unit 45 detects the input of the trigger, the trigger detection unit 45 notifies the input control unit 43 of the detection.

The data editing unit 46 collects, from the input control unit 43, notification of input completion and data of recording end. Further, since the image acquisition data is recorded in the file 44 from the primary file 44, the image acquisition data is edited into a sequential file and
7 is stored.

The log reproducing unit 48 is connected to the display 15 and receives the log file 4 according to the user's instruction.
7 is reproduced. At the time of this reproduction, the image data is output on the display 15.

While monitoring the image on the display 15, an external personal computer (personal computer) 49 sends a recording condition setting unit 41 and an LED recognition unit 42.
In this case, the user is allowed to input a setting operation such as registration or setting change by designating an arbitrary LED position.

Next, a control circuit block diagram of the LED recognition unit 42 will be described with reference to FIG. This LED recognition unit 42
Are an image input unit 51 and an ON / OFF recognition execution processing unit 5
2, an LED registration execution processing unit 53, an ON / OFF recognition program storage unit 54, an LED registration program storage unit 55, and a communication I / F 56.

The image input unit 51 converts analog data input from the CCD camera 14 into digital data.

The ON / OFF recognition execution processing section 52 has a CC
The image data of the LEDs 22 input from the D camera 14, the registered LED position data, and the registered LE
The threshold value is determined while monitoring with a personal computer from the luminance data at the time of turning on / off the light of D. Once the threshold is set, C
LED image data input from the CD camera 14,
Using the registration data sent from the LED registration execution processing unit 53, the ON / OFF state of the sequentially registered LEDs is image-processed and recognized. After recognizing the ON / OFF state of these LEDs, the control unit 40 transfers the LED ON / OFF data to the input control unit 43.

As shown in FIG. 6, the threshold value of the luminance data is obtained by outputting a power spectrum of a luminance value 61 by image processing in a specified range (position where the registered LED is disposed). For example, the maximum value is set when the LED is ON, and the minimum value or the intermediate value is set when the LED is OFF. And if the brightness is higher than the specified threshold, LED
Is recognized as ON, and if the luminance is low, the LED is recognized as OFF.

The LED registration execution processing unit 53 has a communication I / F
While monitoring the image input from the CCD camera 14 by a personal computer or the like through 56, an arbitrary LED is input and designated by a mouse or the like, and the position of the designated LED is registered. The registered data is stored in the LED registration program storage unit 55. After this registration, the program is called from the LED registration program storage unit 55 and the sequentially registered L
The position data of the ED is transferred to the ON / OFF recognition execution processing unit 52.

ON / OFF recognition program storage section 54
Stores a program for recognizing the ON / OFF state of the registered LED and threshold data for recognizing the ON / OFF state.

The LED registration program storage unit 55 stores a program for registering the position of an arbitrary LED and position data of an arbitrary LED.

The communication I / F 56 is used to turn on / off the LED 22.
This is a communication interface used to download a program for executing the FF or the registration process from the outside to the logging device 11 or to use for monitoring at the time of program debugging.

The processing procedure of the LED recognizing unit 42 thus configured will be described with reference to the flowchart of FIG.
First, prior to the recognition of the LEDs, the LED registration execution processing unit 53 determines the display positions of the LEDs 22 arranged in the I / O input unit 21 of the PLC 13, registers the LEDs for each display position, and registers the numbers. (Step n1).

Subsequently, the ON / OFF recognition execution processing section 52
Then, the brightness data at the time of turning on / off the LED 22 is obtained, and L
A threshold value for recognizing whether the ED 22 is turned on or off by image processing is set (step n2).

Similarly, the ON / OFF recognition execution processing section 52
To calculate the average luminance when the LED is turned on. afterwards,
If the brightness of the image data obtained from the CCD camera 14 is higher than the threshold value, the LED 22 is recognized as an ON display, and if the brightness is low, the LED 22 is recognized as an OFF display (step n).
3 to n4).

Such recognition processing is performed for each LED 22... To determine the ON / OFF display state of all the LEDs 22, and the determined ON / OFF recognition data of all the LEDs 22 is subjected to ON / OFF recognition execution processing. From the section 52 to the input control section 4
3 (steps n5 to n6).

As described above, a number of LEs corresponding to the control data of the PLC 13 are provided on the I / O input unit 21 side of the PLC.
D22... Are arranged and arranged, and these are imaged by the CCD camera 14 to detect luminance data indicating whether the light is on or off and the position data thereof, so that they can be optically treated as display signals. For this reason, the control data execution state of the PLC 13 can be collected at a high speed from a remote position like an optical signal through space. As a result, PLC1
Regardless of the third maker or model, the control data execution state of the PLC 13 can be recorded / reproduced at high speed. In addition, since the I / O state of the PLC 13 is recorded using an optically captured image, the display configuration using LEDs is
3 does not adversely affect the operation.

[Second Embodiment] The configuration of the second embodiment is different from that of the first embodiment in that a portion using a light receiving sensor is different. The structure of the different light receiving sensor will be described.

This light receiving sensor is used in place of a CCD camera. As shown in FIGS.
The I / O input unit 21 of the LC is provided with a sensor input unit 82 having a large number of light receiving sensors 81 for receiving the light of the LEDs 22.

The sensor input unit 82 has a box shape that also serves as a protective case with one side open, and the same number of light receiving sensors 81 that oppose each LED 22 are mounted at an inner surface position opposing the opening surface. Also, the mounting interval position is the vertical and horizontal interval position corresponding to each LED 22.
When the sensor input unit 82 is attached to the I / O input unit 21, the light receiving sensors 81 are opposed to the LEDs 22 in proximity to each other.
When the LED 22 is turned on, the light emission is
Receives light reliably near.

At this time, the light receiving detection data of each light receiving sensor 81... Is guided to an external LED recognition unit 83.

In this case, the same number of display confirmation LEDs 84 are provided at the positions on the outer wall surface of the sensor input unit 82 corresponding to the positions where the respective light receiving sensors 81 are provided. Thereby, even if each of the inner LEDs 22 is blocked by the wall surface of the sensor input unit 82, the staff can visually recognize the display confirmation LEDs 84 located corresponding to the outside from the outside. In this case, the display confirmation L
Since the image of the display state of the ED 84 can be acquired, a CCD camera can be used as well.

Next, a control circuit block diagram of the LED recognition unit 83 will be described with reference to FIG. This LED recognition unit 8
3 includes an LED recognition execution processing unit 101, an LED recognition program storage unit 102, and a communication I / F 103.

The LED registration execution processing unit 101 communicates with the communication I /
While monitoring the image input from the light receiving sensor 81 by a personal computer or the like through F103, any LED
Is turned on, and light is detected on the sensor input unit 82 (O
N) The position of the LED corresponding to the light receiving sensor 81 registered is registered. The registered data is stored in the LED recognition program storage 1
02 is stored. After this registration, the program is called from the LED recognition program storage unit 102, and the sequentially registered LED position data and its ON / OFF data are transferred to the input control unit.

The LED recognition program storage unit 102 is used to turn on / off any LED and turn on / off the light receiving sensor 81.
A program for associating F and a database for associating an arbitrary LED with the light receiving sensor 81 are stored.

The communication I / F 103 is for ON / OF of the LED.
F and a program to execute recognition
It is a communication interface that is downloaded to the recognition unit 83 and used for monitoring during program debugging.

As described above, when the light receiving sensor is provided in place of the CCD camera, the same operation and effect as those of the first embodiment can be obtained. Because of the arrangement, data can be reliably collected, and the cost can be reduced by using a light receiving sensor.

[Third Embodiment] FIG. 11 is a block diagram of a control circuit of a logging device 111 having a function of detecting a plurality of triggers. This third embodiment uses a trigger input system other than the CCD camera of the first embodiment. Since they are different, the different parts will be described.

The microphone 1 is connected to a plurality of trigger input systems.
12, a PLC 113, and various I / Os 114. A microphone 112 is connected to a sound input unit 115, and sound data such as a sound of a monitored facility or a voice of a clerk is input to the sound input unit 115. The sound data input here is stored in an internal buffer.

A PLC input / output unit 116 is connected to the PLC 112. The PLC input / output unit 116 obtains control data of a PLC for controlling the equipment to be monitored, and stores the obtained control data in an internal buffer.

Various I / Os 113 include various I / O input units 1
The I / O input unit 117 acquires I / O data from an I / O such as a switch, and stores the acquired I / O data in an internal buffer.

The data buffered in the sound input unit 115, the PLC input / output unit 116, and the various I / O input units 117 are guided to the trigger detection unit 45a, where the trigger set by the recording condition setting unit 41a is set. Monitors for input. Then, when the trigger detection section 45a detects the input of the trigger, it notifies the input control section 43a of the detection. Based on this, the input control unit 43a executes the same operation as the input control unit of the first embodiment.

As described above, the LE from the CCD camera 14a
Not only one trigger when data is collected by the D recognition unit 42a, but also sound data, PLC input / output data, various I
A trigger input corresponding to a plurality of collected data of / O data can be set, and in this case, the trigger detection performance is further improved.

At the time of logging, as shown in FIG.
3a, and logging data is transferred to the temporary file 44a or the data editing unit 46 by the control operation of the input control unit 43a.
Record to a.

Various embodiments can be realized by changing the input pattern of the logging data at this time. For example, (1) LED ON / OFF data pattern from LED recognition unit (2) (1) + sound input data pattern (3) (1) + PLC input data pattern (4) (1) + various I / O data Pattern (5) (2) + PLC input data pattern (6) (2) + Various I / O data patterns (7) (3) + Various I / O data patterns (8) (5) + Various I / O data patterns As described above, eight types of input patterns of logging data can be configured, and an input pattern according to use conditions can be selected.

As described above, the P for controlling the equipment to be monitored
Since the control data execution state of the LC is displayed by the LED, and the display state is collected and recorded, the operation state of the monitored facility can be converted into display data and collected.

As a result, since the control data execution state of the PLC can be displayed as an optical signal and data can be collected at a high speed from a remote position, the PLC can be used regardless of the manufacturer and model of the PLC.
Can be recorded at a high speed.

Further, the PLC obtained by the optically captured image
Since the I / O state of the LED is recorded, the LED itself does not adversely affect the operation of the PLC, and when data is collected using a CCD camera, physical wiring connection can be omitted, so that complicated installation processing is required. Data can be collected at a high speed, and a record corresponding to the operation of the monitored equipment at high speed can be recorded. From this record, the high-speed operation state of the monitored equipment and the cause of the trouble can be clarified. Can be analyzed.

In correspondence between the present invention and the configuration of the above-described embodiment, the control means of the present invention is the same as that of the PLC 13 of the embodiment.
Similarly, the display means corresponds to the LED 22 and the display confirmation LED 84, and the logging data collection means includes the LED recognition units 42, 42a, 83 and the input control unit 4 in the same manner.
3, 43a, the present invention can be applied based on the technical idea shown in the claims, and is not limited to the configuration of the above-described embodiment.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a usage state of a logging device of the present invention.

FIG. 2 is an enlarged front view of a main part showing an imaging state of all LEDs of the present invention.

FIG. 3 is a time chart showing image acquisition data of the LED of the present invention.

FIG. 4 is a control circuit block diagram of the logging device of the present invention.

FIG. 5 is a control circuit block diagram of an LED recognition unit of the present invention.

FIG. 6 is an explanatory diagram showing a state of determining the luminance of an LED during image processing according to the present invention.

FIG. 7 is a flowchart showing a processing procedure of the LED recognition unit of the present invention.

FIG. 8 is an essential part front view showing a use state of the LED according to the second embodiment of the present invention.

FIG. 9 is a side view showing a light receiving state of a light receiving sensor according to a second embodiment of the present invention.

FIG. 10 is a control circuit block diagram of an LED recognition unit according to a second embodiment of the present invention.

FIG. 11 is a control circuit block diagram of a logging device having a function of detecting a plurality of triggers according to a third embodiment of the present invention.

FIG. 12 is a control circuit block diagram of a logging device having a plurality of logging data collection functions according to a third embodiment of the present invention.

[Explanation of symbols]

 11, 111 ... logging device 12 ... monitored equipment 13 ... PLC 14, 14a ... CCD camera 15 ... display 21 ... I / O input unit 22 ... LEDs 42, 42a, 83 ... LED recognition unit 43, 43a ... input control unit 51 ... Image input unit 52 ... ON / OFF recognition execution processing unit 53 ... LED registration execution processing unit 54 ... ON / OFF recognition program storage unit 55 ... LED registration program storage unit 56, 103 ... Communication I / F 61 ... Luminance value 81 ... Light receiving sensor 82: Sensor input unit 84: LED for display confirmation 101: LED recognition execution processing unit 102: LED recognition program storage unit

Continued on the front page F term (reference) 5C054 AA02 CA04 CC02 CH01 EA01 EA07 EB05 ED17 FC15 FF07 GA01 GB02 GB18 GD01 HA01 HA02 5C087 AA09 AA11 AA22 AA23 AA24 AA25 BB19 BB74 DD08 DD27 DD39 EE13 GG19 FF19 GG19 FF19 GG19 FF19 GG30 GG31 GG37 GG43 GG51 GG57 5H223 CC03 CC08 DD03 EE04 EE06 EE17 FF03

Claims (1)

[Claims] 1. A logging device for recording an operation state of a monitored facility according to a time transition, wherein a display state of a display means for displaying a control data execution state of a control means for controlling the monitored facility is recorded. A logging device provided with logging data collection means.