CN112235747B - Wireless communication method and system for vehicle detector - Google Patents
Wireless communication method and system for vehicle detector Download PDFInfo
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- CN112235747B CN112235747B CN202010954876.5A CN202010954876A CN112235747B CN 112235747 B CN112235747 B CN 112235747B CN 202010954876 A CN202010954876 A CN 202010954876A CN 112235747 B CN112235747 B CN 112235747B
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- 238000004891 communication Methods 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000006855 networking Effects 0.000 claims abstract description 39
- 230000004044 response Effects 0.000 claims abstract description 36
- 238000004458 analytical method Methods 0.000 claims abstract description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 18
- 229910052744 lithium Inorganic materials 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 6
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- 238000012790 confirmation Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000007405 data analysis Methods 0.000 claims description 2
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- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
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- 230000005540 biological transmission Effects 0.000 description 2
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Classifications
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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
- H04W8/00—Network data management
- H04W8/26—Network addressing or numbering for mobility support
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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, wherein the wireless networking method comprises 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 itself joins the local area network, if not, the node detector broadcasts a networking application; the router gateway receives the networking application sent by the node detector and returns a host response signal; the node detector receives the host response signal to analyze, responds to the slave response signal, and returns a host secondary response signal after receiving the slave response signal by the routing gateway to generate a routing table and write the routing table into the flash; after receiving the secondary response signal, the node detector stores and writes the received address, and establishes communication connection with the routing gateway to realize data receiving and transmitting. The invention also provides a wireless communication system of the vehicle detector. The scheme can reduce a large amount of work and communication error occurrence probability and maintenance cost of background communication, and reduce equipment power consumption and fault analysis 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 in research internationally, the researched routing methods are more, but most of the routing methods are too complex, the simulation effect is good, but the effect is greatly influenced by the installation position and the signal strength in actual use, and the effect is not necessarily good.
433M is characterized by long transmission distance and strong anti-interference capability, but can only communicate one to one, and in order to realize a one-to-one or one-to-many networking mode, an own communication protocol must be formulated. Currently, when wireless devices (e.g., routers) within a certain range need to be networked together, they are typically connected to each other by wireless means, thereby forming a wireless networking system. The principle of such a wireless networking system is that an APP is installed on a configuration end (for example, a mobile phone), a wireless device to be added to a network is connected by using bluetooth or WIFI, the APP issues a wireless networking related configuration to the wireless device to be added to the network through bluetooth or WIFI, and the wireless device attempts to wirelessly connect with other wireless devices according to the wireless networking configuration information after receiving the wireless networking configuration information. In the existing wireless networking scheme, the routing gateway needs to receive the information of the node in real time, so that the power consumption of the gateway is relatively large, the user mode function of the communication protocol is relatively single, and an 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 aim of the invention is realized by the following technical scheme:
a wireless networking method of a vehicle detector, comprising the steps of:
S1, initializing a network, namely initializing contents in a routing gateway and a node detector respectively, and simultaneously acquiring routing table information stored in Flash;
s2, sending a networking application, judging whether the current node equipment is added into a local area network or not by a node detector according to a stored routing table, and broadcasting the networking application at regular time if the current node equipment is not added into the local area network;
S3, address allocation, namely entering a interception state after the initialization of a routing gateway is completed, calculating an optimal network structure according to a Cluster-Tree routing algorithm when a node detector sends a networking application, allocating an application layer address corresponding to a physical address, generating a routing table, generating the routing table, writing the routing table into a flash, and returning a host response signal to the node detector;
S4, address confirmation, the node detector receives the host response signal of the routing gateway and performs address analysis, meanwhile, the slave response signal is responded to the routing gateway, the routing gateway returns the host secondary response signal after receiving the slave response signal, and the node detector information is stored and written;
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 the application layer address, and establishes communication connection with the routing gateway to realize data receiving and transmitting.
Specifically, the initialization contents in the routing gateway and the node detector in the step S1 include a BSP, a protocol stack, a millimeter wave radar, a 4G module and a 433M communication module.
Specifically, the network address allocation mechanism in the 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 when the signal state information is detected to be transformed, the node detector sends equipment data information to the routing gateway; and after receiving the equipment data information sent by the joining 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, the routing gateway and the node detector are provided with inspection instructions in equipment programs, and when detecting that a node fails, the routing gateway sends node failure information to a background supervision center.
Specifically, when the routing gateway or the node detector detects the long key information, all elements in the internal linked list of the equipment and the data content in the internal flash are cleared.
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 redialing of the disconnection reconnection mechanism, MQTT connection is established, and when the background supervision center cannot detect the MQTT connection within a set time, fault alarm is carried out.
A wireless communication system for a vehicle detector comprises a node detector, a routing gateway and a background supervision center, wherein,
The node detector is used for detecting whether the current equipment has data uploading, sending a communication connection request to the routing gateway and uploading equipment data at the same time;
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 panel, a charging chip, a lithium battery, a singlechip, a 433M communication module, a millimeter wave radar and a reset key; the solar cell panel, the charging chip and the lithium battery are connected in sequence; the singlechip is respectively connected with the charging chip, the lithium battery, the 433M communication module, the millimeter wave radar and the reset key.
Specifically, 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 connected in sequence; the microprocessor is respectively connected with the charging chip, the lithium battery, the 4G communication module, the 433M communication module, the millimeter wave radar and the reset key.
The invention has the beneficial effects that: the 433M communication mode is adopted, so that a large amount of work of communication with the background can be reduced, the occurrence probability of communication errors and maintenance cost are reduced, the power consumption of equipment is reduced, and the equipment fault condition can be alarmed and analyzed.
Drawings
Fig. 1 is a flow chart of the method of the present invention.
Fig. 2 is a block diagram of the networking principle 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 configuration of the present invention.
Fig. 5 is a schematic diagram of a routing gateway circuit structure of the present invention.
Fig. 6 is a flow chart of a node detector apparatus program of the present invention.
Fig. 7 is a flow chart of a routing gateway apparatus procedure of the present invention.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present invention, a specific embodiment of the present invention will be described with reference to the accompanying drawings.
In this embodiment, as shown in fig. 1-2, a wireless networking method for a vehicle detector uses a networking mode of active uploading by a slave to perform networking with a host, and the method includes the following steps:
step 1, initializing a network, namely initializing hardware and program module contents such as BSP, protocol stack, millimeter wave radar, 4G module and 433M communication module in a routing gateway and a node detector respectively, and simultaneously acquiring routing table information stored in Flash. The millimeter wave radar is AX111 millimeter wave radar.
And step 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 at regular time if the current node equipment is not added into the local area network.
And step 3, address allocation, namely entering a interception state after the initialization of the routing gateway is completed, calculating an optimal network structure according to a Cluster-Tree routing algorithm when a node detector sends a networking application, allocating an application layer address corresponding to a physical address, generating a routing table, generating the routing table, writing the routing table into a flash, and returning a host response signal to the node detector.
And 4, address confirmation, wherein the node detector receives the host response signal of the routing gateway and performs address analysis, and simultaneously responds to the slave response signal to the routing gateway, and the routing gateway returns a host secondary response signal after receiving the slave response signal, stores and writes the node detector information.
And 5, establishing communication connection, after the node detector receives the secondary response signal of the routing gateway, storing and writing the received physical address and the application layer address, and establishing communication connection with the routing gateway to realize data receiving and sending.
After communication connection is established, a node detector reads signal state information of the millimeter wave radar at regular time, and when the signal state information is detected to be transformed, equipment data information is sent to a routing gateway; and after receiving the equipment data information sent by the joining 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.
And routing gateway and node detector equipment programs are provided with routing inspection instructions, and when detecting that a node fails, the routing gateway sends node failure information to a background supervision center.
In addition, when the routing gateway or the node detector detects the long key information, all elements in the internal linked list of the device and the data content in the internal flash are cleared. And a disconnection reconnection mechanism is arranged in a 4G communication module of the routing gateway, when communication is disconnected, data is sent to a background supervision center through redialing of the disconnection reconnection mechanism, MQTT connection is established, 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 a current device has data upload, and send a communication connection request to the routing gateway, and upload device 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 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, and the singlechip is respectively connected with the charging chip, the lithium battery, the 433M communication module, the millimeter wave radar and the reset key. The method comprises the steps that a single chip microcomputer in a node detector is provided with an equipment program, a program flow chart is shown in fig. 6, after the node detector is started, a BSP, a protocol stack, a hardware equipment millimeter wave radar and 433M communication module in the program are initialized according to the program, after initialization is completed, content is read from flash in the program, whether the current node equipment is added into a local area network is judged, and if the current node equipment is not added into the local area network, networking application is broadcasted for 5 seconds at regular time; if the local area network is added, the device enters a low-power consumption state, and wakes up to read AX111 millimeter wave radar signal state data at a timing of 5 s. And when the state of the detection signal data is changed, transmitting equipment information comprising a time stamp, electric quantity and equipment state to the routing gateway, stopping transmitting the equipment information if a host response signal of the routing gateway is received, and cyclically transmitting the equipment information if the host response signal is not received, and stopping transmitting when the transmission times reach 3 times.
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 connected in sequence; the microprocessor is respectively connected with the charging chip, the lithium battery, the 4G communication module, the 433M communication module, the millimeter wave radar and the reset key. The invention passes through. The microprocessor in the routing gateway is also provided with a device program, the program flow chart of the microprocessor is shown in fig. 7, after the initialization of the device is completed, the microprocessor enters a interception state, when the networking application broadcasted by the node detector is intercepted, two response processes are carried out with the node detector, communication connection is established, the node detector can upload data to the routing gateway device, and after the routing gateway device receives the data, the node detector can also send the data to a background supervision center for data analysis.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A wireless networking method for a vehicle detector, comprising the steps of:
S1, initializing a network, namely initializing contents in a routing gateway and a node detector respectively, and simultaneously acquiring routing table information stored in Flash;
s2, sending a networking application, judging whether the current node equipment is added into a local area network or not by a node detector according to a stored routing table, and broadcasting the networking application at regular time if the current node equipment is not added into the local area network;
S3, address allocation, namely entering a interception state after the initialization of a routing gateway is completed, calculating an optimal network structure according to a Cluster-Tree routing algorithm when a node detector sends a networking application, allocating an application layer address corresponding to a physical address, generating a routing table, generating the routing table, writing the routing table into a flash, and returning a host response signal to the node detector;
S4, address confirmation, the node detector receives the host response signal of the routing gateway and performs address analysis, meanwhile, the slave response signal is responded to the routing gateway, the routing gateway returns the host secondary response signal after receiving the slave response signal, and the node detector information is stored and written;
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 the application layer address, and establishes communication connection with the routing gateway to realize data receiving and transmitting;
the initialization contents in the routing gateway and the node detector in the step S1 specifically comprise a BSP, a protocol stack, a millimeter wave radar, a 4G module and a 433M communication module;
After the node detector is started, initializing a BSP, a protocol stack and a hardware device millimeter wave radar and 433M communication module in the program according to the program, reading content from flash in the program after the initialization is finished, starting to judge whether the current node device is added into a local area network, and broadcasting a networking application for 5s at regular time if the current node device is not added into the local area network; if the local area network is added, the equipment enters a low-power consumption state, and wakes up and reads AX111 millimeter wave radar signal state data at a timing of 5 s; when detecting that the signal data is subjected to state transformation, sending equipment information comprising a time stamp, electric quantity and equipment state to the routing gateway, stopping sending the equipment information if a host response signal of the routing gateway is received, and circularly sending the equipment information if the host response signal is not received, and stopping sending when the sending times reach 3 times;
The microprocessor in the routing gateway is also provided with a device program, after the initialization of the device is completed, the device enters a interception state, when the networking application broadcasted by the node detector is intercepted, two response processes are carried out with the node detector, communication connection is established, the node detector uploads data to the routing gateway device, and after the routing gateway device receives the data, the data is sent to a background supervision center for data analysis.
2. The wireless networking method of vehicle detectors according to claim 1, wherein the network address allocation mechanism in the step S3 is a ZigBee address allocation mechanism.
3. The wireless networking method of the vehicle detector according to claim 1, wherein after the communication connection is established in the step S5, further comprises: 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 transformed, the node detector sends equipment data information to the routing gateway; and after receiving the equipment data information sent by the joining 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.
4. The wireless networking method of the vehicle detector according to claim 1, wherein routing gateway and node detector equipment programs are provided with routing inspection instructions, and when a node is detected to be faulty, node fault information is sent to a background supervision center through the routing gateway.
5. The wireless networking method of the vehicle detector according to claim 1, further comprising clearing all elements in the internal linked list of the device and the data content in the internal flash when the routing gateway or the node detector detects the long key information.
6. The wireless networking method of the vehicle detector according to claim 1, wherein the 4G communication module of the routing gateway is provided with a disconnection reconnection mechanism, when the communication is disconnected, data is sent to the background supervision center through redialing by the disconnection reconnection mechanism, the MQTT connection is established, and when the background supervision center cannot detect the MQTT connection within a set time, a fault alarm is given.
7. A wireless communication system of a vehicle detector is realized based on the wireless networking method of the vehicle detector according to any one of claims 1-6, and is characterized by comprising a node detector, a routing gateway and a background supervision center,
The node detector is used for detecting whether the current equipment has data uploading, sending a communication connection request to the routing gateway and uploading equipment data at the same time;
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;
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 an analysis result; the node detector comprises a solar panel, a charging chip, a lithium battery, a singlechip, a 433M communication module, a millimeter wave radar and a reset key; the solar cell panel, the charging chip and the lithium battery are connected in sequence; the singlechip is respectively connected with the charging chip, the lithium battery, the 433M communication module, the millimeter wave radar and the reset key.
8. The vehicle detector wireless communication system of claim 7, 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 connected in sequence; the microprocessor is respectively connected with the charging chip, the lithium battery, the 4G communication module, the 433M communication module, the millimeter wave radar and the reset key.
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