CN213813942U

CN213813942U - Radar device for collecting road traffic information

Info

Publication number: CN213813942U
Application number: CN202022661469.3U
Authority: CN
Inventors: 胡涛; 林家骐; 邹倩; 汪伟; 郭强
Original assignee: Anhui Sun Create Electronic Co Ltd
Current assignee: Anhui Sun Create Electronic Co Ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-07-27
Anticipated expiration: 2030-11-17

Abstract

The utility model discloses a radar device for collecting road traffic information, which comprises an antenna, a radio frequency module, a DSP digital processing module, an ARM control processing module, a structural shell, a mounting bracket, a power adapter and a cable; the utility model discloses a microstrip array antenna, radio frequency transceiver circuit provide 1 and send out 2 receipts passageways, measure a plurality of motion reflectors length, distance, radial velocity, angle simultaneously, realize the real-time tracking to road vehicle, the antenna is installed on the installing support, and the antenna is installed on the structure casing, and radio frequency module, DSP digital processing module, ARM control processing module are all installed inside the structure casing, and radio frequency module and DSP digital processing module are integrated on a set of circuit board, and ARM control processing module is integrated on another group's circuit board, connects the plug-in connection through circuit board joint plug-in between antenna, radio frequency module, DSP digital processing module and the ARM control processing module, the utility model discloses a microstrip array antenna, radio frequency transceiver circuit provide 1 and send out 2 receipts passageways.

Description

Radar device for collecting road traffic information

Technical Field

The utility model belongs to the technical field of intelligent transportation, specifically be a radar device for road traffic information gathers.

Background

At present, the road condition and traffic information needs to be acquired no matter in a built road traffic supervision system or a future unmanned vehicle and road cooperation system is being developed and built, and various detection sensor devices are indispensable. Common intelligent traffic information acquisition technical means comprise a coil geomagnetic detector, a video detector, a microwave radar detector, an infrared laser detector and the like.

Traditional traffic detector manufacturers only pay attention to the sensors, most products on the market only provide one serial port communication interface and one data return protocol, a plurality of problems exist in data butt joint with an intelligent traffic management platform, and when the intelligent traffic detector is used in linkage with other traffic products, an external industrial control device needs to be additionally arranged, so that the cost is increased, and the application of the intelligent traffic detector in intelligent traffic is restricted. The utility model relates to a radar installations for road traffic information gathers not only accomplishes the detection to the target on the road as the sensor, itself can also be to the various application analysis of detected data to and can be nimble convenient carry out the software butt joint with all kinds of front end equipment and platform, realize the product of integration, high integration, universalization.

SUMMERY OF THE UTILITY MODEL

The utility model provides a radar installation for road traffic information gathers, the internal integrated ARM control panel possesses data acquisition, storage, statistics, traffic algorithm calculation and analysis, web access and graphical display etc for the radar not only can provide road conditions data at the front end, can also carry out data analysis through intelligent algorithm at the front end, studies out road running state and traffic incident, inserts other equipment and rear end platform through optical network or 4G networking mode.

The purpose of the utility model can be realized by the following technical scheme: a radar device for collecting road traffic information comprises an antenna, a radio frequency module, a DSP digital processing module, an ARM control processing module, a structural shell, a mounting bracket, a power adapter and a cable; the structure shell is arranged on the mounting bracket, the antenna is arranged on the structure shell, the radio frequency module, the DSP digital processing module and the ARM control processing module are all arranged in the structure shell, the radio frequency module and the DSP digital processing module are integrated on one group of circuit boards, the ARM control processing module is integrated on the other group of circuit boards, and the antenna, the radio frequency module, the DSP digital processing module and the ARM control processing module are connected in an opposite inserting mode through circuit board connector plug-ins; the ARM control processing module is respectively connected with external equipment and the platform through cables, the power adapter is electrically connected with the ARM control processing module through the cables, and the power adapter outputs +12V direct current.

The utility model discloses a further technological improvement lies in: the antenna adopts a microstrip array antenna, and the receiving and transmitting antennas of the microstrip array antenna are separated.

The utility model discloses a further technological improvement lies in: the radio frequency module comprises a BGT24MTR12 chip of the English flying company, an ADI ADF4158 phase-locked loop chip of the ADI company, an active filter circuit and a low-phase noise stabilized power supply; the ADF4158 outputs the chirp signal required for transmission, and the BGT24MTR12 provides 1 transmit channel and 2 receive channels.

The utility model discloses a further technological improvement lies in: the DSP digital processing module adopts a DSP28377 chip to simultaneously process signals of 2 receiving and transmitting channels, and the DSP28377 chip is connected with a BGT24MTR12 chip and an ADF4158 phase-locked loop chip of the radio frequency module through 2 paths of SPI interfaces.

The utility model discloses a further technological improvement lies in: the ARM control processing module adopts an ESM335X industrial control mainboard, is embedded into a Linux operating system, integrates a front-end Web configuration interface, and is in communication connection with the DSP digital processing module.

The utility model discloses a further technological improvement lies in: the ESM335X industrial control mainboard of the ARM control processing module is provided with a 10/100M network output interface, a serial port output interface, a 4G module and a GPS module.

The utility model discloses a further technological improvement lies in: the cable includes power supply line, 485 serial port line and ethernet interface.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the vehicle monitoring radar device adopts a DSP + ARM hardware structure, integrates a traffic data analysis algorithm into a front-end radar, and brings great flexibility and expandability to the overall function of the product.

2. The frequency modulation continuous wave technology, the track processing technology and the intelligent traffic intersection algorithm are organically combined, so that the intelligent traffic intersection is powerful in function and rich in application.

3. The micro-strip array antenna is adopted, the radio frequency transceiver circuit provides a 1-transmitting and 2-receiving channel, and the lengths, distances, radial speeds, angles and the like of a plurality of moving reflectors are measured simultaneously, so that real-time tracking of road vehicles is realized.

4. The ARM embedded industrial control mainboard is internally provided with an 10/100M network output interface, a serial port output interface, a 4G module and a GPS module, radar networking is conveniently realized in a wired or wireless network mode, data butt joint and communication with a rear-end management platform are realized, and GPS accurate synchronous timing is realized.

5. And a Linux operating system is embedded, a front-end Web configuration interface is integrated, and traffic data access, storage display, calculation analysis, statistical query and the like are performed.

6. The product is high in integration, miniaturization and integration, has rich external output interfaces, and can be rapidly and flexibly deployed in various traffic application scenes.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a block diagram of a radar apparatus system for collecting road traffic information according to the present invention.

Fig. 2 is a diagram of the working process of the radar device for collecting road traffic information.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, a radar apparatus for collecting road traffic information includes an antenna, a radio frequency module, a DSP digital processing module, an ARM control processing module, a structural casing, a mounting bracket, a power adapter, and a cable; the structure shell is arranged on the mounting bracket, the antenna is arranged on the structure shell, the radio frequency module, the DSP digital processing module and the ARM control processing module are all arranged in the structure shell, the radio frequency module and the DSP digital processing module are integrated on one group of circuit boards, the ARM control processing module is integrated on the other group of circuit boards, and the antenna, the radio frequency module, the DSP digital processing module and the ARM control processing module are connected in an opposite inserting mode through circuit board connector plug-ins; the ARM control processing module is respectively connected with external equipment and the platform through cables, the power adapter is electrically connected with the ARM control processing module through the cables, and the power adapter outputs +12V direct current.

The vehicle monitoring radar device adopts a DSP + ARM hardware structure, integrates a traffic data analysis algorithm into a front-end radar, and brings great flexibility and expandability to the overall function of the product. The frequency modulation continuous wave technology, the track processing technology and the intelligent traffic intersection algorithm are organically combined, so that the intelligent traffic intersection is powerful in function and rich in application. The intelligent road condition data analysis system can not only provide road condition data, but also analyze the data at the front end through an intelligent algorithm and study and judge road running states and traffic events.

The antenna adopts a micro-strip array antenna, the receiving and transmitting antennas of the micro-strip array antenna are separated, and the wide beam transmission and the dual beam reception are realized in the form of the separation of the receiving and transmitting antennas.

The radio frequency module comprises a BGT24MTR12 chip of the English flying company, an ADI ADF4158 phase-locked loop chip of the ADI company, an active filter circuit and a low-phase noise stabilized power supply; the ADF4158 outputs the chirp signal required for transmission, and the BGT24MTR12 provides 1 transmit channel and 2 receive channels.

The DSP digital processing module adopts a DSP28377 chip to simultaneously perform signal processing on 2 receiving and transmitting channels, the DSP28377 chip is connected with a BGT24MTR12 chip and an ADF4158 phase-locked loop chip of the radio frequency module through 2 paths of SPI interfaces, and the operations of AD sampling, waveform control, time sequence synchronization and the like of the radar radio frequency front-end chip are realized.

The ARM control processing module adopts an ESM335X industrial control mainboard, is embedded into a Linux operating system and integrates a front-end Web configuration interface, and is in communication connection with the DSP digital processing module and is in communication with the DSP digital processing module, so that traffic data access, storage display, calculation analysis and statistical query are realized.

The ESM335X industrial control mainboard of the ARM control processing module is provided with a 10/100M network output interface, a serial port output interface, a 4G module and a GPS module, networking is carried out through a 4G module wireless network, and time synchronization is carried out through the GPS module.

The cable comprises a power supply line, a 485 serial port line and an Ethernet interface, and realizes power supply and communication cable connection.

The working principle is as follows: the utility model discloses when using, radio frequency transceiver module contains BGT24MTR12 radar signal generation and receiving chip and ADF4158 phase-locked loop chip, BGT24MTR12 and antenna connection, the radio frequency transceiver module output is connected to DSP digital processing module through SPI, DSP28377 chip carries out signal processing to 2 transceiver channels simultaneously, in addition the DSP chip realizes carrying out operations such as wave form control and chronogenesis synchronization to radar radio frequency front end chip through 2 ways SPI interface. The ARM industrial control mainboard is connected with the DSP digital processing module, receives and controls radar data in an internal UDP network mode, is connected and communicated with external equipment and a rear end platform in an external TCP mode through a wired network side or a 4G wireless network, and can also output data with external equipment such as a camera and a signal controller in a 485 serial port mode. The power is connected with the ARM control main board through the 12V direct-current power supply, and the ARM board provides 5V and 3.5V direct-current voltage for the whole system in a unified mode.

The utility model discloses the work processing process picture, at first by radio frequency module control antenna receiving and dispatching wave form, data acquisition sends for digital processing module, carry out signal processing and include that target information resolves, the distance condenses, speed condenses and the position condenses etc., then carry out track tracking processing, target track data transmission after will handling carries out the graphical display for control processing module, show vehicle track tracking effect in real time, carry out the flow at last, average speed, the occupancy, the headway, traffic data analysis such as traffic flow density calculates, and store all kinds of data, so that make statistics of inquiry.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A radar apparatus for road traffic information acquisition, characterized by: the system comprises an antenna, a radio frequency module, a DSP digital processing module, an ARM control processing module, a structural shell, a mounting bracket, a power adapter and a cable; the structure shell is arranged on the mounting bracket, the antenna is arranged on the structure shell, the radio frequency module, the DSP digital processing module and the ARM control processing module are all arranged in the structure shell, the radio frequency module and the DSP digital processing module are integrated on one group of circuit boards, the ARM control processing module is integrated on the other group of circuit boards, and the antenna, the radio frequency module, the DSP digital processing module and the ARM control processing module are connected in an opposite inserting mode through circuit board connector plug-ins; the ARM control processing module is respectively connected with external equipment and the platform through cables, the power adapter is electrically connected with the ARM control processing module through the cables, and the power adapter outputs +12V direct current.

2. The radar apparatus for collecting road traffic information according to claim 1, wherein the antenna is a microstrip array antenna, and the transmitting and receiving antennas of the microstrip array antenna are separated.

3. The radar device for road traffic information collection according to claim 1, wherein the radio frequency module comprises a BGT24MTR12 chip of the company England flying, an ADI ADF4158 phase-locked loop chip of the company ADI, an active filter circuit and a low-phase-noise stabilized power supply; the ADF4158 outputs the chirp signal required for transmission, and the BGT24MTR12 provides 1 transmit channel and 2 receive channels.

4. The radar apparatus for collecting road traffic information as recited in claim 3, wherein said DSP digital processing module employs a DSP28377 chip to perform signal processing on 2 transceiving channels simultaneously, and the DSP28377 chip is connected to BGT24MTR12 chip and ADF4158 phase-locked loop chip of the RF module via 2 SPI interfaces.

5. The radar apparatus for collecting road traffic information as recited in claim 1, wherein said ARM control processing module is an ESM335X industrial control motherboard, embedded with Linux operating system, integrated with front-end Web configuration interface, and is communicatively connected to said DSP digital processing module.

6. The radar apparatus for collecting road traffic information as claimed in claim 1, wherein the ESM335X industrial control motherboard of the ARM control processing module is provided with a 10/100M network output interface, a serial port output interface, a 4G module and a GPS module.

7. The radar apparatus for collection of road traffic information according to claim 1, wherein the cable comprises a power supply line, a 485 serial port line and an ethernet interface.