CN108492586B - Distributed road interval monitoring system and speed measuring method thereof - Google Patents
Distributed road interval monitoring system and speed measuring method thereof Download PDFInfo
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- CN108492586B CN108492586B CN201810492774.9A CN201810492774A CN108492586B CN 108492586 B CN108492586 B CN 108492586B CN 201810492774 A CN201810492774 A CN 201810492774A CN 108492586 B CN108492586 B CN 108492586B
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
- G08G1/054—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed photographing overspeeding vehicles
Abstract
The invention discloses a distributed road interval monitoring system and a speed measuring method thereof. The front-end subsystem is used for building monitoring equipment and collecting data, the data are sent to the rear-end management subsystem through the transmission subsystem, the rear-end management subsystem is divided into a monitoring management center and a business application center according to different functional departments and different monitoring work requirements, and the invention uses a self-built intersection local area network, a special access network, a central video private network and the existing public security optical fiber network resources as transmission channels to construct a network transmission subsystem, so that interconnection and intercommunication between the front-end sub-system and the rear-end management subsystem of the bayonet are realized, and the system has strong practicability.
Description
Technical Field
The invention belongs to interval radar speed measurement, and particularly relates to a distributed road interval monitoring system and a speed measurement method thereof.
Background
The radar bayonet system takes vehicle characteristic data acquisition such as vehicle picture snapshot, vehicle license plate identification and the like, carries out control comparison alarm, checks out the station and carries out alarm interception as a main purpose, carries out continuous automatic recording throughout the year on overspeed illegal conditions, and provides important technical means and evidence for rapidly correcting overspeed illegal behaviors. Currently, in a bayonet speed measurement system, there are mainly the following means:
(1) The annular coil sensor is used as an overspeed detection means, a camera evidence obtaining system is added, and the speed measurement precision can be ensured, but the way needs to be broken, and the maintenance cost is high;
(2) The image virtual coil is adopted as an overspeed detection means, and a camera evidence obtaining system is added, so that the measurement means cannot perform 'standard' due to the non-consistency of installation;
(3) The laser velocimeter is used as an overspeed detection means, and the camera evidence obtaining system is added, so that the measurement accuracy is high, but the equipment cost is high, and the wide application is difficult at present.
Disclosure of Invention
The invention aims to: aiming at the defects of the single-point speed measuring means, the invention provides a distributed road interval monitoring system and a speed measuring method thereof, wherein the system is a speed measuring system based on a fixed-point speed measuring system and license plate recognition, and mainly measures the average speed in a fixed interval through the passing time of vehicles in the fixed interval, so as to realize all-weather interval speed measurement and intelligent control on certain sections of a tunnel.
The technical scheme is as follows: the utility model provides a road interval monitoring system based on distributing type, the interval speed measuring and monitoring based on distributing type design of system, the system includes preceding subsystem, transmission subsystem and rear end management subsystem, preceding subsystem includes light filling lamp, radar, bayonet snap-shot unit, camera, switch, optical fiber transceiver and terminal server, light filling lamp, radar are connected with the bayonet snap-shot unit, switch and optical fiber transceiver connect gradually, the switch still be connected with camera and terminal server, transmission subsystem includes wireless network and private line network, rear end subsystem include central management platform, memory system and department monitoring platform.
Furthermore, RS-485 serial port communication is adopted between the radar and the bayonet snapshot unit, and the radar transmits vehicle speed information to the bayonet snapshot unit through 485 signals;
further, the camera is a high-definition CCD network camera;
further, the central management platform consists of a server carrying a platform software module and comprises a management server, an application server, a Web server, a picture server and a database server;
furthermore, the bayonet snapshot unit is powered by external power supply and a UPS power supply.
A road interval speed measurement method based on distribution comprises the following steps:
(1) Monitoring interval setting: the monitoring point is provided with a bayonet snapshot unit, a radar, a light supplementing lamp and a camera, the bayonet snapshot unit comprises a radar speed measurement position point and a shooting position point of the camera, the radar speed measurement position point and the shooting position point of the camera are not in the same position, and the distance between the speed measurement position point and the shooting position point is recorded;
(2) And (3) image acquisition: identifying vehicle information through a camera, wherein the vehicle information comprises vehicle colors, vehicle types and vehicle license plates, the vehicle numbers comprise license plate numbers and license plate colors, and acquiring shooting time points of the camera;
(3) Vehicle speed measurement: when a vehicle passes through the bayonet snapshot unit, transmitting a narrow-beam radar signal to a running vehicle in a single lane through a radar, acquiring the instantaneous speed of the vehicle according to a reflected echo, and acquiring a radar speed measurement time point;
(4) Vehicle monitoring: the vehicle is identified through digital processing according to the image information obtained in the step (2), then the instantaneous speed of the vehicle passing through the radar speed measuring position point is obtained through the step (3), the average speed passing through the distance is calculated according to the time when the vehicle passes through the camera to shoot the position point, the time when the vehicle passes through the radar speed measuring position point and the distance between the two position points, and the processing result is sent to a central management platform, a storage system and a department monitoring platform through a transmission network.
Further, the method comprises the steps of setting two or more monitoring points, wherein the monitoring points comprise a bayonet snap shooting unit, a radar, a light supplementing lamp and a camera, calculating the average speed per hour of a vehicle passing through the road section according to the distance between every two monitoring points, and finally transmitting obtained vehicle information and speed to a rear terminal system.
The beneficial effects are that: compared with the prior art, the bayonet snapshot unit adopted by the invention fully considers the high reliability of the system, selects high-integration equipment, and effectively ensures the high availability and reliability of the system by adopting the technologies of automatic detection, automatic monitoring, automatic alarm, single-point self-healing, redundancy configuration, load balancing and the like; on the other hand, the system provided by the invention is convenient to construct, flexible in networking mode, convenient to expand and maintain in later period, capable of dynamically adjusting resources, timely adjusting and distributing limited system resources according to the actual running condition of the service system, and improving the utilization rate of the resources.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
For a detailed description of the disclosed embodiments, reference will now be made to the accompanying drawings and examples.
The design of the system is based on a centralized management strategy of a distributed system, adopts a hierarchical structure design and is mainly divided into three layers from the aspect of logic relationship: front subsystem-transmission subsystem-back-end management subsystem.
When the back-end management subsystem is constructed, the back-end management subsystem is divided into a monitoring management center and a business application center according to different function key points, and is flexibly deployed according to specific single-point application, county-level application, city-level application and even full-province large-scale networking application, so that the management function of a superior department is enhanced, the application function of a practical department is highlighted, and unified management of the whole network resource is realized. The network transmission subsystem is constructed by taking a self-built intersection local area network, a special access network, a central video private network and the existing public security optical fiber network resource as a transmission channel, so that interconnection and intercommunication between the front-end management subsystem and the rear-end management subsystem of the bayonet are realized.
The utility model provides a section speed measurement monitoring system based on distributing type, this system is based on interval speed measurement and monitoring of distributing type design, this system includes preceding subsystem, transmission subsystem and rear end management subsystem, preceding subsystem includes light filling lamp, radar, bayonet snap shot unit, camera, switch, fiber optic transceiver and terminal server, light filling lamp, radar are connected with the bayonet snap shot unit, switch and fiber optic transceiver connect gradually, the switch still is connected with camera and terminal server, transmission subsystem includes transmission network, rear end subsystem be central management platform.
The radar bayonet system consists of a bayonet front subsystem, a network transmission subsystem and a rear management subsystem. The method realizes the collection, transmission, processing, analysis and centralized management of the traffic vehicle information. 1 snap capture unit is configured on each 2/3 lanes or a single lane and is used for acquiring complete appearance pictures of the running vehicle and processing real-time data; key technologies such as ISP imaging control, light supplementing lamp linkage signal output, license plate number recognition and the like are integrated in the bayonet snapshot unit; each lane is provided with a flash lamp as an auxiliary light source, so that the snap-shot picture can clearly identify the license plate number and the front driver cab face; each stuck point (less than or equal to 12 lanes) comprises a vehicle detection processor which is used for vehicle detection and coil state detection; when the number of lanes of a single stuck point is more than 12, a vehicle detection processor needs to be increased according to the increased number of lanes, and the single vehicle detection processor can support 12 lanes at most; a radar is arranged on each lane and used for detecting the speed of the vehicle; each stuck point (less than or equal to 12 lanes) is provided with a terminal server which is used for backup storage of front-end information; each clamping point is provided with a floor cabinet, the chassis is arranged at a proper position of the vertical rod, and power distribution equipment, a mounting bracket and a wire slot are arranged in the chassis, and a maintenance power socket is provided. Each clamping point is provided with a UPS power supply, and continuous power supply can be ensured under the condition that external power supply is suddenly stopped.
(1) Front terminal system
The front terminal system mainly comprises a bayonet snapshot unit, a light supplementing lamp, a radar, a terminal server, an external field industrial switch, an optical fiber transceiver, a switching power supply, a lightning arrester and other equipment, the radar is adopted as a speed measuring unit, a camera is a high-definition panoramic camera and is preferably a CDD network camera, and the acquisition of comprehensive information of a vehicle is completed, wherein the acquisition comprises a vehicle feature photo, a license plate number, a license plate color and the like. The terminal server completes the functions of picture information identification, data caching, compression uploading and the like.
The system detects the speed of the vehicle by adopting a narrow-beam radar speed measuring method, the effective measuring range of the radar is limited in one lane, the vehicle speed interference of adjacent lanes is effectively avoided, the radar converts the running speed of the vehicle according to the Doppler principle, and the corresponding speed information is transmitted to the bayonet snapshot unit. And the radar transmits the vehicle speed information to the bayonet snapshot unit through 485 signals by adopting RS-485 serial communication between the radar and the bayonet snapshot unit. The bayonet snapshot unit and the light supplementing lamp are arranged on the same upright rod cantilever arm, so that the number of upright rods and investment cost are reduced, and the dirt cleaning difficulty of later-stage equipment is reduced.
(2) Transmission subsystem
The transmission subsystem is responsible for system networking, and comprises an intersection switch and an optical fiber transceiver, and is used for completing the transmission and exchange of data and pictures. The network transmission subsystem consists of an intersection local area network, an access network and a central video private network. The intersection local area network adopts independent network segments to complete the interconnection of a plurality of high-definition network snap cameras and terminal servers, and comprises the steps of using a wireless network for data transmission and communication.
Because of the safety requirement of the bayonet system, a special line network is generally built by renting an optical fiber link of an operator, each front end point position is a bare optical fiber from the center, the denser point positions in the urban area can be networked by an EPON mode, and the remote area can also be networked by a wireless mode. The uplink port of the terminal server and the high-definition network panoramic camera adopt the IP address of the access network, and the special access network completes intersection data aggregation to the central machine room. The center video private network completes the interconnection of the platform server, the special image client and the like. The terminal server is boundary equipment of the intersection local area network and the access network, and has a gateway function. The three networks are interconnected and communicated, and are safe and reliable.
(3) Back-end management subsystem
And the system is responsible for realizing the aggregation, processing, storage, application, management and sharing of relevant data in jurisdictions, and consists of a central management platform and a storage system. The central management platform is composed of a server carrying a platform software module and comprises: management server, application server, web server, picture server, database server, etc.
For dynamic data information such as a vehicle license plate, because the required storage capacity is relatively small and the absolute safety and high-speed reading and writing of data are required to be ensured, the FC SAN with good protocol efficiency, performance, stability, safety, compatibility and expandability and high price is selected for storing the data information, and meanwhile, the system-level redundancy hot standby can be selected. FC SAN is a storage network technology developed from the end of nineties, and encapsulates SCSI commands in FC packets, with very low proportions of header and trailer and check code, and therefore very efficient. Its development has undergone at least three generations: 1Gb, 2Gb and current 4Gb. Its use has been almost ten years, a very mature and reliable technology that is adopted and accepted to a wide extent, so to speak, throughout almost every type of institution, in the data center of large, medium and small enterprises.
For the vehicle picture information, the JPEG encoding format is adopted for storage, and because the required storage space is relatively large, the storage cost per unit capacity is mainly reduced under the conditions of ensuring the stability of data and meeting the storage speed and safety requirements, therefore, the system stability is better, and the IP SAN with higher performance, safety, compatibility and expandability and relatively low price is selected for storing the picture. IP-SAN/NAS the iSCSI protocol used under SAN fabric, as a new Internet SCSI standard for accessing data Block-level (Block-level) over IP networks, bridges the SAN and NAS.
For vehicle video information, because the required storage space is relatively large, the storage cost per unit capacity needs to be reduced as a main target under the conditions of guaranteeing data stability and meeting storage speed and safety requirements, so that NVR storage video with better stability, higher performance, safety, compatibility and expandability and low price is selected.
The invention provides a speed measuring method based on a distributed road interval monitoring system, which comprises the following steps:
(1) Monitoring interval setting: the monitoring point is provided with a bayonet snapshot unit, a radar, a light supplementing lamp and a camera, wherein the bayonet snapshot unit comprises a radar speed measurement position point and a shooting position point of the camera, the radar speed measurement position point and the shooting position point of the camera are not in the same position, and the distance between the speed measurement position point and the shooting position point is recorded;
(2) And (3) image acquisition: identifying vehicle information through a camera, wherein the vehicle information comprises vehicle colors, vehicle types and vehicle license plates, the vehicle numbers comprise license plate numbers and license plate colors, and acquiring shooting time points of the camera;
(3) Vehicle speed measurement: when a vehicle passes through the bayonet snapshot unit, transmitting a narrow-beam radar signal to a running vehicle in a single lane through a radar, acquiring the instantaneous speed of the vehicle according to a reflected echo, and acquiring a radar speed measurement time point;
(4) Vehicle monitoring: the vehicle is identified through digital processing according to the image information obtained in the step (2), then the instantaneous speed of the vehicle passing through the radar speed measuring position point is obtained through the step (3), the average speed passing through the distance is calculated according to the time when the vehicle passes through the camera to shoot the position point, the time when the vehicle passes through the radar speed measuring position point and the distance between the two position points, and the processing result is sent to a central management platform, a storage system and a department monitoring platform through a transmission network.
Claims (6)
1. The utility model provides a speed measurement method based on distributed road interval monitoring system, the interval monitoring and the speed measurement of system based on distributed design, the system includes preceding subsystem, transmission subsystem and rear end management subsystem, preceding subsystem includes light filling lamp, radar, bayonet snap shot unit, camera, switch, optical fiber transceiver and terminal server, light filling lamp, radar are connected with bayonet snap shot unit, switch and optical fiber transceiver connect gradually, the switch is connected with camera and terminal server, transmission subsystem includes wireless network and private line network, rear end management subsystem include central management platform, memory system and department monitoring platform, its characterized in that: the method comprises the following steps:
(1) Monitoring interval setting: the monitoring point is provided with a bayonet snapshot unit, a radar, a light supplementing lamp and a camera, the bayonet snapshot unit comprises a radar speed measurement position point and a shooting position point of the camera, the radar speed measurement position point and the shooting position point of the camera are not in the same position, and the distance between the speed measurement position point and the shooting position point is recorded;
(2) And (3) image acquisition: identifying vehicle information through a camera, wherein the vehicle information comprises vehicle colors, vehicle types and vehicle license plates, the vehicle numbers comprise license plate numbers and license plate colors, and acquiring shooting time points of the camera;
(3) Vehicle speed measurement: when a vehicle passes through the bayonet snapshot unit, transmitting a narrow-beam radar signal to a running vehicle in a single lane through a radar, acquiring the instantaneous speed of the vehicle according to a reflected echo, and acquiring a radar speed measurement time point;
(4) Vehicle monitoring: the vehicle is identified through digital processing according to the image information obtained in the step (2), then the instantaneous speed of the vehicle passing through the radar speed measuring position point is obtained through the step (3), the average speed passing through the distance is calculated according to the time when the vehicle passes through the camera to shoot the position point, the time when the vehicle passes through the radar speed measuring position point and the distance between the two position points, and the processing result is sent to a central management platform, a storage system and a department monitoring platform through a transmission network.
2. The speed measurement method based on the distributed road interval monitoring system according to claim 1, wherein the speed measurement method is characterized by comprising the following steps: RS-485 serial port communication is adopted between the radar and the bayonet snapshot unit, and the radar transmits vehicle speed information to the bayonet snapshot unit through 485 signals.
3. The speed measurement method based on the distributed road interval monitoring system according to claim 1, wherein the speed measurement method is characterized by comprising the following steps: the camera is a high-definition CCD network camera.
4. The speed measurement method based on the distributed road interval monitoring system according to claim 1, wherein the speed measurement method is characterized by comprising the following steps: the center management platform consists of servers carrying platform software modules and comprises a management server, an application server, a Web server, a picture server and a database server.
5. The speed measurement method based on the distributed road interval monitoring system according to claim 1, wherein the speed measurement method is characterized by comprising the following steps: the bayonet snapshot unit is powered by external power supply and a UPS power supply.
6. The speed measurement method based on the distributed road interval monitoring system according to claim 1, wherein the speed measurement method is characterized by comprising the following steps: the method comprises the steps of setting two or more monitoring points, wherein the monitoring points comprise a bayonet snap shooting unit, a radar, a light supplementing lamp and a camera, calculating the average speed per hour of a vehicle passing through a road section according to the distance between every two monitoring points, and finally transmitting obtained vehicle information and speed to a rear-end management subsystem.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109544946B (en) * | 2019-01-03 | 2021-09-28 | 南京城建隧桥经营管理有限责任公司 | Tunnel real-time monitoring management system based on traffic flow big data and implementation method thereof |
| CN111583669B (en) * | 2019-02-15 | 2022-01-07 | 杭州海康威视数字技术股份有限公司 | Overspeed detection method, overspeed detection device, control equipment and storage medium |
| CN110444026B (en) * | 2019-08-06 | 2021-07-09 | 北京万集科技股份有限公司 | Triggering snapshot method and system for vehicle |
| CN110880237B (en) * | 2019-08-29 | 2021-07-06 | 安徽百诚慧通科技有限公司 | Highway long-downhill closed-loop accident prevention system and method |
| CN110648542B (en) * | 2019-11-08 | 2021-09-21 | 深圳市哈工大业信息技术股份有限公司 | High-precision vehicle flow detection system based on azimuth recognition narrow-wave radar |
| CN111025308B (en) * | 2019-12-03 | 2022-02-01 | 招商局检测车辆技术研究院有限公司 | Vehicle positioning method, device, system and storage medium |
| CN113473073A (en) * | 2020-03-31 | 2021-10-01 | 北京慧行实达科技有限公司 | Vehicle monitoring data acquisition system |
| CN113112815A (en) * | 2021-03-30 | 2021-07-13 | 湖南建工德顺电子科技有限公司 | Radar checkpoint vehicle management system |
| CN113299074B (en) * | 2021-04-28 | 2022-07-12 | 广州铁路职业技术学院（广州铁路机械学校） | Method for monitoring automobile overspeed based on distributed optical fiber |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295402A (en) * | 2013-07-01 | 2013-09-11 | 广东惠利普路桥信息工程有限公司 | Intelligent traffic overspeed snapshot system |
| CN105100751A (en) * | 2015-09-07 | 2015-11-25 | 苏州市世跃智能科技有限公司 | Safe city simple access system |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL135205C (en) * | 1961-03-08 | |||
| CN101017610B (en) * | 2006-07-27 | 2011-01-19 | 西安西谷微功率数据技术有限责任公司 | Highway RF car speed monitoring and management system |
| CN101635094A (en) * | 2008-07-24 | 2010-01-27 | 安徽蓝盾光电子股份有限公司 | Method for measuring speed within vehicle interval |
| CN101383098A (en) * | 2008-10-17 | 2009-03-11 | 安徽宏实光机电高科有限公司 | Linear array CCD on-road vehicle speed measuring method based on instant hardware technology |
| CN100587759C (en) * | 2008-11-12 | 2010-02-03 | 刘业兴 | Automatic monitoring system for automobile overspeed |
| CN102592457A (en) * | 2012-02-13 | 2012-07-18 | 山东鼎讯智能交通科技有限公司 | Compound type interval velocity-measuring system based on internet of things technology and method thereof |
| CN202887454U (en) * | 2012-08-15 | 2013-04-17 | 鄂尔多斯市龙腾捷通科技有限公司 | Embedded multifunctional integrated host capable of being applied to road-interval speed measurement |
| JP6309328B2 (en) * | 2014-04-02 | 2018-04-11 | 株式会社ヨコオ | Vehicle speed monitoring method and apparatus |
| RU158811U1 (en) * | 2015-02-18 | 2016-01-20 | Общество С Ограниченной Ответственностью "Технологии Распознавания" | DEVICE OF AUTOMATED CONTROL OF SPEED MODE OF MOTOR TRANSPORT |
| ES2665939B2 (en) * | 2016-10-28 | 2018-08-20 | Universidad De Alcalá | Procedure for the punctual measurement of speed of motor vehicles in short section with minimum error geometry |
| CN107742422A (en) * | 2017-10-11 | 2018-02-27 | 公安部第三研究所 | Road vehicle monitoring system violating the regulations and its method |
| CN208422109U (en) * | 2018-05-22 | 2019-01-22 | 南京城建隧桥经营管理有限责任公司 | One kind monitoring system based on distributed road interval |
-
2018
- 2018-05-22 CN CN201810492774.9A patent/CN108492586B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103295402A (en) * | 2013-07-01 | 2013-09-11 | 广东惠利普路桥信息工程有限公司 | Intelligent traffic overspeed snapshot system |
| CN105100751A (en) * | 2015-09-07 | 2015-11-25 | 苏州市世跃智能科技有限公司 | Safe city simple access system |
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