CN112235747A - Wireless communication method and system for vehicle detector - Google Patents
Wireless communication method and system for vehicle detector Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
- H04W40/32—Connectivity information management, e.g. connectivity discovery or connectivity update for defining a routing cluster membership
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/19—Connection re-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W8/26—Network addressing or numbering for mobility support
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a wireless networking method and a communication system of a vehicle detector, comprising the following steps: initializing a routing gateway and a node detector, and acquiring routing table information stored in Flash; the node detector judges whether the node detector is added to a local area network or not, and if not, the node detector broadcasts a networking application; the routing gateway receives a networking application sent by the node detector and returns a host response signal; the node detector receives the host response signal for analysis, simultaneously responds to the slave response signal, and the routing gateway returns the host secondary response signal after receiving the slave response signal, generates a routing table and writes the routing table into the flash; and after receiving the secondary response signal, the node detector stores and writes the received address, establishes communication connection with the routing gateway and realizes data receiving and sending. The invention also provides a wireless communication system of the vehicle detector. The scheme can reduce a large amount of work of communication with the background, the probability of communication errors and the maintenance cost, and reduce the power consumption of equipment and fault analysis and alarm.
Description
Technical Field
The invention relates to the technical field of wireless networking, in particular to a wireless networking method and a communication system of a vehicle detector.
Background
The wireless ad hoc network protocol is a popular research direction at present, a plurality of large companies are researched internationally, and the researched routing methods are more, but most of the routing methods are too complex and have good simulation effect, but the effect is greatly influenced by the installation position and the signal strength during actual use, and the effect is not necessarily good.
433M is characterized by long transmission distance and strong anti-interference capability, but only one-to-one communication is possible, and a communication protocol must be established to realize many-to-one or one-to-many networking. Currently, when wireless devices (e.g., routers) within a certain range need to be networked together, they are generally connected to each other in a wireless manner to form a wireless networking system. The principle of the wireless networking system is that an APP is installed on a configuration end (such as a mobile phone), wireless equipment to be added to the network is connected through Bluetooth or WIFI, the APP issues related wireless networking configuration to the wireless equipment to be added to the network through the Bluetooth or the WIFI, and the wireless equipment tries to wirelessly connect other wireless equipment through the wireless networking configuration information after receiving the wireless networking configuration information. In the existing wireless networking scheme, because the routing gateway needs to receive the information of the nodes in real time, the power consumption of the gateway is high, the user mode function of a communication protocol is single, and the alarm cannot be given when equipment fails.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a wireless networking method and a communication system of a vehicle detector.
The purpose of the invention is realized by the following technical scheme:
a wireless networking method of a vehicle detector comprises the following steps:
s1, initializing the network, respectively initializing the contents in the routing gateway and the node detector, and simultaneously acquiring routing table information stored in Flash;
s2, sending networking application, the node detector judging whether the current node equipment has joined the local area network according to the stored routing table, if not, broadcasting the networking application regularly;
s3, address allocation, the routing gateway enters a monitoring state after initialization is completed, when a networking application sent by the node detector is received, the optimal network structure is calculated according to a Cluster-Tree routing algorithm, an application layer address corresponding to a physical address is allocated and a routing table is generated, the routing table is generated and written into a flash, and a host response signal is returned to the node detector;
s4, confirming the address, the node detector receives the host response signal of the routing gateway and analyzes the address, and simultaneously responds the slave response signal to the routing gateway, the routing gateway returns the host secondary response signal after receiving the slave response signal, and the host secondary response signal is stored and written into the node detector information;
and S5, establishing communication connection, after receiving the secondary response signal of the routing gateway, the node detector stores and writes the received physical address and application layer address, establishes communication connection with the routing gateway, and realizes data receiving and sending.
Specifically, the initialization content in the routing gateway and the node detector in step S1 specifically includes a BSP, a protocol stack, a millimeter wave radar, a 4G module, and a 433M communication module.
Specifically, the network address allocation mechanism in step S3 is a ZigBee address allocation mechanism.
Specifically, after the communication connection is established in step S5, the method further includes: the node detector reads the signal state information of the millimeter wave radar at regular time, and sends equipment data information to the routing gateway when the change of the signal state information is detected; and after receiving the equipment data information sent by the node equipment, the routing gateway returns a response signal, and uploads the response signal to the background supervision center for processing through the 4G module.
Specifically, routing inspection instructions are arranged in equipment programs of the routing gateway and the node detector, and when a node is detected to have a fault, node fault information is sent to the background supervision center through the routing gateway.
Specifically, when the routing gateway or the node detector detects the long key information, all elements in an internal linked list of the device and data contents in an internal flash are emptied.
Specifically, the 4G communication module of the routing gateway is provided with a disconnection reconnection mechanism, when communication is disconnected, data is sent to the background supervision center through the disconnection reconnection mechanism by redialing, MQTT connection is established, and when the background supervision center cannot detect the MQTT connection within a set time, fault alarm is performed.
A wireless communication system of a vehicle detector comprises a node detector, a routing gateway and a background supervision center, wherein,
the node detector is used for detecting whether data are uploaded to the current equipment or not, sending a communication connection request to the routing gateway and uploading the equipment data;
the routing gateway is used for establishing communication connection with the node detector and uploading the received equipment data to the background supervision center for processing;
and the background supervision center is used for analyzing the equipment data uploaded by the routing gateway equipment and carrying out fault judgment and alarm on the equipment according to the analysis result.
Specifically, the node detector comprises a solar cell panel, a charging chip, a lithium battery, a single chip microcomputer, a 433M communication module, a millimeter wave radar and a reset key; the solar cell panel, the charging chip and the lithium battery are sequentially connected; the single chip microcomputer is connected with the charging chip, the lithium battery, the 433M communication module, the millimeter wave radar and the reset key respectively.
Specifically, the routing gateway comprises a solar cell panel, a charging chip, a lithium battery, a microprocessor, a 4G communication module, a 433M communication module, a millimeter wave radar and a reset key; the solar cell panel, the charging chip and the lithium battery are sequentially connected; the microprocessor is connected with the charging chip, the lithium battery, the 4G communication module, the 433M communication module, the millimeter wave radar and the reset key respectively.
The invention has the beneficial effects that: the scheme adopts a 433M communication mode, so that a large amount of work of communication with a background can be reduced, the occurrence probability of communication errors and the maintenance cost are reduced, the power consumption of equipment is reduced, and the alarm and fault analysis can be performed on the fault condition of the equipment.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
Fig. 2 is a networking schematic block diagram of the present invention.
Fig. 3 is a schematic diagram of the system architecture of the present invention.
Fig. 4 is a schematic diagram of the node detector circuit of the present invention.
Fig. 5 is a schematic circuit diagram of the routing gateway of the present invention.
FIG. 6 is a flow chart of a node finder apparatus routine of the present invention.
Fig. 7 is a flow chart of the routing gateway device routine of the present invention.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
In this embodiment, as shown in fig. 1 to 2, a wireless networking method for a vehicle detector performs networking with a host by using a networking method of actively uploading from a slave, and the method includes the following steps:
step 1, initializing a network, respectively initializing the contents of hardware and program modules such as a BSP (base station protocol), a protocol stack, a millimeter wave radar, a 4G module, a 433M communication module and the like in a routing gateway and a node detector, and simultaneously acquiring routing table information stored in Flash. Wherein, the millimeter wave radar is AX111 millimeter wave radar.
And 2, sending a networking application, judging whether the current node equipment is added into the local area network or not by the node detector according to the stored routing table, and broadcasting the networking application regularly if the current node equipment is not added into the local area network.
And 3, address allocation, after the routing gateway is initialized, the routing gateway enters a monitoring state, when a networking application sent by the node detector is received, an optimal network structure is calculated according to a Cluster-Tree routing algorithm, an application layer address corresponding to the physical address is allocated, a routing table is generated, the routing table is written into a flash, and a host response signal is returned to the node detector.
And 4, confirming the address, wherein the node detector receives a host response signal of the routing gateway, analyzes the address, simultaneously responds a slave response signal to the routing gateway, returns a host secondary response signal after the routing gateway receives the slave response signal, and stores and writes the node detector information.
And 5, establishing communication connection, storing and writing the received physical address and the application layer address after the node detector receives the secondary response signal of the routing gateway, establishing communication connection with the routing gateway, and realizing data receiving and sending.
After the communication connection is established, the node detector reads the signal state information of the millimeter wave radar at regular time, and when the signal state information is detected to be changed, the node detector sends equipment data information to the routing gateway; and after receiving the equipment data information sent by the node equipment, the routing gateway returns a response signal, and uploads the response signal to the background supervision center for processing through the 4G module.
Routing inspection instructions are arranged in equipment programs of the routing gateway and the node detector, and when a node is detected to have a fault, node fault information is sent to a background supervision center through the routing gateway.
In addition, when the routing gateway or the node detector detects the long key information, all elements in an internal linked list of the equipment and data contents in the internal flash are emptied. And a disconnection reconnection mechanism is arranged in a 4G communication module of the routing gateway, when communication is disconnected, data is sent to the background supervision center by redialing through the disconnection reconnection mechanism to establish MQTT connection, and when the background supervision center cannot detect the MQTT connection within a set time, fault alarm is carried out.
In this example, as shown in fig. 3, a wireless communication system for a vehicle detector includes a node detector, a routing gateway, and a background supervision center, where the node detector is configured to detect whether data is uploaded to current equipment, send a communication connection request to the routing gateway, and upload equipment data at the same time.
And the routing gateway is used for establishing communication connection with the node detector and uploading the received equipment data to a background supervision center for processing.
And the background supervision center is used for analyzing the equipment data uploaded by the routing gateway equipment and carrying out fault judgment and alarm on the equipment according to the analysis result.
In this embodiment, as shown in fig. 4, the node detector includes a solar cell panel, a charging chip, a lithium battery, a single chip microcomputer, a 433M communication module, a millimeter wave radar, and a reset key. Solar cell panel, charging chip, lithium cell connect gradually, and the singlechip is connected with charging chip, lithium cell, 433M communication module, millimeter wave radar and reset key respectively. After the node detector is started, initializing a BSP (base station protocol) and a protocol stack in the program and a hardware device millimeter wave radar and 433M (media access module) communication module according to the program, reading contents from a flash in the program, starting to judge whether the current node device is added to a local area network or not, and if the current node device is not added to the local area network, timing 5s broadcast networking application; if the local area network is added, the equipment enters a low power consumption state, and the AX111 millimeter wave radar signal state data is awakened and read at regular time of 5 s. And when the state of the detection signal data is changed, sending equipment information to the routing gateway, wherein the equipment information comprises a timestamp, electric quantity and an equipment state, meanwhile, if a host response signal of the routing gateway is received, the equipment information is stopped to be sent, if the host response signal is not received, the equipment information is sent circularly, and the sending times reaches 3 times and the sending is stopped.
As shown in fig. 5, the routing gateway includes a solar panel, a charging chip, a lithium battery, a microprocessor, a 4G communication module, a 433M communication module, a millimeter wave radar, and a reset key; the solar cell panel, the charging chip and the lithium battery are sequentially connected; the microprocessor is connected with the charging chip, the lithium battery, the 4G communication module, the 433M communication module, the millimeter wave radar and the reset key respectively. The invention provides a method for processing a plurality of chips. The microprocessor in the routing gateway is also provided with an equipment program, a program flow chart is shown in fig. 7, after equipment initialization is completed, the routing gateway enters an interception state, when a networking application broadcasted by an interception node detector is applied, two response processes are carried out with the node detector, communication connection is established, at the moment, the node detector can upload data to the routing gateway equipment, and after the routing gateway equipment receives the data, the routing gateway equipment can also send the data to a background supervision center for data analysis.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A wireless networking method of a vehicle detector is characterized by comprising the following steps:
s1, initializing the network, respectively initializing the contents in the routing gateway and the node detector, and simultaneously acquiring routing table information stored in Flash;
s2, sending networking application, the node detector judging whether the current node equipment has joined the local area network according to the stored routing table, if not, broadcasting the networking application regularly;
s3, address allocation, the routing gateway enters a monitoring state after initialization is completed, when a networking application sent by the node detector is received, the optimal network structure is calculated according to a Cluster-Tree routing algorithm, an application layer address corresponding to a physical address is allocated and a routing table is generated, the routing table is generated and written into a flash, and a host response signal is returned to the node detector;
s4, confirming the address, the node detector receives the host response signal of the routing gateway and analyzes the address, and simultaneously responds the slave response signal to the routing gateway, the routing gateway returns the host secondary response signal after receiving the slave response signal, and the host secondary response signal is stored and written into the node detector information;
and S5, establishing communication connection, after receiving the secondary response signal of the routing gateway, the node detector stores and writes the received physical address and application layer address, establishes communication connection with the routing gateway, and realizes data receiving and sending.
2. The method for wireless networking of vehicle probes according to claim 1, wherein the initialization content in the routing gateway and the node probes in step S1 specifically includes BSP, protocol stack, millimeter wave radar, 4G module, and 433M communication module.
3. The method for wireless networking of vehicle detectors according to claim 1, wherein the network address allocation mechanism in step S3 is a ZigBee address allocation mechanism.
4. The method for wirelessly networking a vehicle detector according to claim 1, wherein after the step S5 of establishing the communication connection, the method further comprises: the node detector reads the signal state information of the millimeter wave radar at regular time, and sends equipment data information to the routing gateway when the change of the signal state information is detected; and after receiving the equipment data information sent by the node equipment, the routing gateway returns a response signal, and uploads the response signal to the background supervision center for processing through the 4G module.
5. The wireless networking method of the vehicle detector according to claim 1, wherein the routing gateway and the node detector are provided with routing inspection instructions, and when a node failure is detected, the routing gateway sends node failure information to a background supervision center.
6. The method for wireless networking of vehicle probes according to claim 1, further comprising clearing all elements in the internal linked list of the device and data contents in the internal flash when the routing gateway or the node probe detects the long key information.
7. The wireless networking method for the vehicle detector according to claim 1, wherein a disconnection reconnection mechanism is arranged in the 4G communication module of the routing gateway, when communication is disconnected, data is sent to the background supervision center through the disconnection reconnection mechanism by redialing to establish MQTT connection, and when the MQTT connection cannot be detected by the background supervision center within a set time, a fault alarm is given.
8. A wireless communication system of a vehicle detector is characterized by comprising a node detector, a routing gateway and a background supervision center, wherein,
the node detector is used for detecting whether data are uploaded to the current equipment or not, sending a communication connection request to the routing gateway and uploading the equipment data;
the routing gateway is used for establishing communication connection with the node detector and uploading the received equipment data to the background supervision center for processing;
and the background supervision center is used for analyzing the equipment data uploaded by the routing gateway equipment and carrying out fault judgment and alarm on the equipment according to the analysis result.
9. The vehicle detector wireless communication system according to claim 8, wherein the node detector comprises a solar panel, a charging chip, a lithium battery, a single chip microcomputer, a 433M communication module, a millimeter wave radar and a reset key; the solar cell panel, the charging chip and the lithium battery are sequentially connected; the single chip microcomputer is connected with the charging chip, the lithium battery, the 433M communication module, the millimeter wave radar and the reset key respectively.
10. The vehicle detector wireless communication system according to claim 8, wherein the routing gateway comprises a solar panel, a charging chip, a lithium battery, a microprocessor, a 4G communication module, a 433M communication module, a millimeter wave radar and a reset key; the solar cell panel, the charging chip and the lithium battery are sequentially connected; the microprocessor is connected with the charging chip, the lithium battery, the 4G communication module, the 433M communication module, the millimeter wave radar and the reset key respectively.
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| CN118509818A (en) * | 2024-06-14 | 2024-08-16 | 深圳市盛腾青科技有限公司 | Security monitoring method, host computer, slave computer and security monitoring system |
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