CN111932876A - Road surface induction system and method based on wide area radar - Google Patents
Road surface induction system and method based on wide area radar Download PDFInfo
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Abstract
The invention is suitable for the field of intelligent traffic technology improvement, and provides a road surface guidance system based on a wide area radar, which comprises an information acquisition unit, a data processing unit and a guidance issuing unit, wherein the output end of the information acquisition unit is connected with the input end of the data processing unit, the output end of the data processing unit is connected with the input end of the guidance issuing unit, and the information acquisition unit is used for capturing traffic operation parameter acquisition and operation state in real time; the data processing unit is used for processing the front-end collected data through the database and the radar data platform and analyzing, evaluating and releasing contents; and the induction issuing unit is used for issuing the real-time information issued by the data processing unit. The system analyzes and captures the traffic event images in time, issues event information to the corresponding induction screen, and reminds drivers of avoiding in time, so that traffic jam and accidents are reduced.
Description
Technical Field
The invention belongs to the field of intelligent traffic technology improvement, and particularly relates to a road surface induction system based on a wide-area radar.
Background
With the rapid development of urbanization in recent years, urban population is more and more, automobile holding capacity also presents a great increase mode, and the urban traffic demand is rapidly increased from the source, the urban traffic pressure is increased, and the phenomenon of traffic jam is more and more serious. In order to relieve the urban congestion state, the construction of urban expressways is accelerated in many cities in various regions, and the expressways have the characteristics of central absolute separation zones and full access control so as to ensure the running of continuous traffic flow, bear most of trips, and play a significant role in improving the capacity of an urban road network, relieving traffic congestion and providing safe, fast and convenient traffic environment.
However, with the increasing demand, vehicles in the expressway network are more and more, and problems possibly existing in design exist, so that the expressway in many cities are congested, particularly, the expressway is intersected with ground road traffic at ramp entrances and exits, so that the congestion phenomenon is easy to occur. Therefore, the research of the intelligent traffic guidance system has important significance for the development and construction of urban traffic.
With the advance of intelligent transportation technology, a traffic guidance system is established to provide dynamic and real-time traffic information for drivers on the way of traveling, so as to help the drivers to perform reasonable route selection and on-the-way diversion, and the traffic guidance system becomes a feasible traffic control strategy. The traffic guidance screen is used as an important component of the traffic guidance system, can display real-time road condition information, warning notification, safety prompt and the like to a driver in a most direct mode, brings convenience to people, and can effectively maintain traffic order.
Different traffic guidance requirements are usually required in different sections, and the uniform display content on the traffic guidance screen can bring redundant information and omit really necessary information. In addition, because the actual traffic condition may change at any time, the content displayed on the traffic guidance screen is not updated in time. Therefore, there is a need for a traffic guidance screen control system that can update content in a timely manner and has a reasonable display scheme.
The guidance screen on the expressway has a function of guiding traffic, but the traffic incident currently identified through monitoring is not accurate and is easily affected by environmental factors. For example, during peak hours, the fast road is easy to jam due to untimely induction at the down ramp. The three-level induction system based on the millimeter wave radar can well solve the problem. The radar works all weather, is not influenced by rain, snow, fog and night, but can not acquire video and picture information, the system combines the advantages of the radar and the video, can shoot a plurality of continuous traffic event linkage monitoring ball machines monitored by the radar in real time, generates character and picture alarm information, and releases the character and picture alarm information to a preset induction screen, so that traffic is dredged in time, and the effects of reducing congestion and traffic accidents are achieved.
The traffic guidance system is a system which obtains real-time road traffic information by using an electronic information technology and distributes the real-time road traffic information to road users. The method improves a road traffic system by inducing the behavior of travelers, prevents traffic jam, reduces the stay time of vehicles on the road, and finally achieves the aim of reasonably distributing traffic flow in a road network.
The function of the traffic guidance system is mainly embodied in three aspects:
(1) in the aspect of traffic management, various traffic information is issued to a traffic site through an information issuing system, so that traffic participants are reminded in time, and the probability of traffic jam events is reduced;
(2) in the aspect of traffic organization, the collected traffic condition information can enable a traffic organizer to timely and comprehensively master real-time traffic conditions, take relevant measures in advance and ensure smoothness to the maximum extent;
(3) in the aspect of traffic service, according to the grasped traffic condition information and information distribution channels, traffic guidance information is provided for traffic participants, the pressure of blind traffic on a road network is reduced, meanwhile, departure time and a selection mode are provided for travelers, and the load balance of traffic in the whole road network is promoted.
The traffic guidance system is a good solution for local traffic jam caused by a large number of traffic participants, but because of the randomness and irregularity of traffic participation, a traffic manager cannot plan in advance, and the pressure of urban traffic management is increased, so that the investment of the traffic guidance system is controversial all the time. It is understood that the following problems are commonly existed in the current traffic guidance system:
1. when the information release time is not in time
The traffic running condition cannot be predicted in advance, traffic guidance information reminding can be issued only before and after congestion occurs, uncertainty exists in time, and the trust of traffic participants cannot be obtained;
2. singleness of information released
At present, information displayed by a guidance screen in most areas is slogans, road network states and the like, prompts in predicted passing time can be given in a small number of places, and more traffic participants prefer to use a mobile navigation APP as a travel judgment basis.
3. The degree of intellectualization is low
Most of the induction screens are not linked with other systems, including video monitoring, event monitoring, traffic information acquisition and other systems, and are still executed by adopting manual issuing means, so that effective traffic information perception means and linkage strategies are lacked.
Disclosure of Invention
The invention aims to provide a road surface induction system based on a wide-area radar, and aims to solve the technical problem.
The invention is realized in such a way, the road surface guidance system based on the wide area radar comprises an information acquisition unit, a data processing unit and a guidance release unit, wherein the output end of the information acquisition unit is connected with the input end of the data processing unit, the output end of the data processing unit is connected with the input end of the guidance release unit, and the information acquisition unit is used for capturing traffic operation parameter acquisition and operation state in real time; the data processing unit is used for processing the front-end collected data through the database and the radar data platform and analyzing, evaluating and releasing contents; and the induction issuing unit is used for issuing the real-time information issued by the data processing unit.
The further technical scheme of the invention is as follows: the information acquisition unit comprises a wide area radar microwave detector and a monitoring camera, the output end of the monitoring camera is connected with the input end of the data processing unit, and the output end of the wide area radar microwave detector is connected with the input end of the data processing unit.
The further technical scheme of the invention is as follows: the data processing unit comprises an application server and a storage server, the application server is in communication connection with the storage server, a database is installed on the storage server, a data radar platform is installed on the application server or the storage server, and induction system software is installed on the application server.
The further technical scheme of the invention is as follows: the database stores the corresponding relation among the serial number, the IP address, the longitude and latitude, the installation point location name, the user name and the password information of the front-end acquisition equipment, and stores the corresponding information relation of the configuration information of the front-end equipment by the user; sending back the processed result data to the front-end acquisition equipment for storage; and storing the data information of the user according to the priority relation.
The further technical scheme of the invention is as follows: the radar data platform is a query interface for acquiring, storing and analyzing equipment data by a front-end wide area radar detector, converting the analyzed radar data into event information, providing the event information for the induction system software to use, and generating traffic volume and event data.
The further technical scheme of the invention is as follows: the induction system software comprises an information distribution studying and judging module, an information decision control module, a data storage management module and a data fusion analysis module, wherein the output end of the data fusion distribution module is connected with the input end of the information distribution studying and judging module, the output end of the information distribution studying and judging module is respectively connected with the input end of the information decision control module and the input end of the data storage management module, and the output end of the information decision control module is connected with the input end of the data storage management module.
The further technical scheme of the invention is as follows: the induction system software is provided with an external communication interface which adopts an HTTP (hyper text transport protocol) interface; and the user performs use configuration on the inducing system in a webpage mode.
Another object of the present invention is to provide a wide area radar-based road surface induction method, which includes the following steps:
s1, adding the information of the information acquisition equipment into the induction system;
s2, setting the corresponding relation between the trigger condition and the execution structure in the induction system;
and S3, fusing and judging the events detected by the acquisition equipment, and generating and issuing time processing results.
The further technical scheme of the invention is as follows: the step S1 further includes the following steps:
and S11, connecting the information acquisition equipment, the server and the guidance screen through a communication protocol to form a guidance system.
The further technical scheme of the invention is as follows: the step S3 further includes the steps of:
s31, analyzing the event detected by the acquisition equipment in a trigger condition list to judge whether the trigger condition is met, if so, instructing corresponding snapshot equipment to snapshot, and issuing the snapshot picture and the text information analyzed by the event to a specified induction screen, if not, giving up the event;
the triggering condition is overspeed or retrograde motion or illegal lane change or queuing overrun or overflow or congestion;
the acquisition equipment comprises a wide area radar microwave detector and a monitoring camera.
The invention has the beneficial effects that: after the radar detects a traffic event, the system can analyze and snapshot images of the traffic event in time and release event information (character information and image information) to the corresponding induction screen, so that drivers can be reminded of avoiding in time, and traffic jam and accidents are reduced. The system can directly display the real-time traffic condition at the background, and greatly reduces the manpower consumption and property loss.
Drawings
Fig. 1 is a block diagram of a wide-area radar-based road surface guidance system according to an embodiment of the present invention.
Fig. 2 is a flowchart of a road surface induction method based on a wide-area radar according to an embodiment of the present invention.
Fig. 3 is a schematic view of an intersection in an unblocked state according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of an intersection logo in a clear state according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of an intersection in a congestion state according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of a congestion status intersection logo according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of a severe congestion intersection according to an embodiment of the present invention.
Fig. 8 is a schematic diagram of a severe congestion intersection logo according to an embodiment of the present invention.
Detailed Description
As shown in fig. 1, the wide area radar-based road guidance system provided by the present invention includes an information acquisition unit, a data processing unit and a guidance issuing unit, wherein an output end of the information acquisition unit is connected to an input end of the data processing unit, an output end of the data processing unit is connected to an input end of the guidance issuing unit, and the information acquisition unit is configured to capture traffic operation parameter acquisition and an operation state in real time; the data processing unit is used for processing the front-end collected data through the database and the radar data platform and analyzing, evaluating and releasing contents; and the induction issuing unit is used for issuing the real-time information issued by the data processing unit.
The information acquisition unit comprises a wide area radar microwave detector and a monitoring camera, the output end of the monitoring camera is connected with the input end of the data processing unit, and the output end of the wide area radar microwave detector is connected with the input end of the data processing unit.
The data processing unit comprises an application server and a storage server, the application server is in communication connection with the storage server, a database is installed on the storage server, a data radar platform is installed on the application server or the storage server, and induction system software is installed on the application server.
The database stores the corresponding relation among the serial number, the IP address, the longitude and latitude, the installation point location name, the user name and the password information of the front-end acquisition equipment, and stores the corresponding information relation of the configuration information of the front-end equipment by the user; sending back the processed result data to the front-end acquisition equipment for storage; and storing the data information of the user according to the priority relation.
The radar data platform is a query interface for acquiring, storing and analyzing equipment data by a front-end wide area radar detector, converting the analyzed radar data into event information, providing the event information for the induction system software to use, and generating traffic volume and event data.
The induction system software comprises an information distribution studying and judging module, an information decision control module, a data storage management module and a data fusion analysis module, wherein the output end of the data fusion distribution module is connected with the input end of the information distribution studying and judging module, the output end of the information distribution studying and judging module is respectively connected with the input end of the information decision control module and the input end of the data storage management module, and the output end of the information decision control module is connected with the input end of the data storage management module.
The information distribution development is used for the fact that the traffic information collected by the front end of the system is original traffic data, cannot be directly used for generating induction information, and needs to be processed properly. The system utilizes a real-time dynamic traffic distribution model and corresponding software to carry out real-time traffic distribution according to the traffic state information and the video monitoring information detected by the front end, and can form basic target data supporting a three-level induction algorithm.
And data fusion analysis is used for analyzing information such as traffic flow, queuing length, traffic flow speed and the like detected by the wide-area radar microwave detector by the system, and fusion calculation is carried out on the real-time traffic information data by combining the visual running state of video monitoring and judging logic based on a three-level induction algorithm, so that the running state of the current road can be formed.
And the data storage management is used for establishing a traffic index historical database, a travel time historical database and a regional road network basic information database. The historical data of traffic indexes and the travel time data are established on the basis of a road network basic information database. The three databases are interrelated and form the basis of the traffic guidance system.
And the information decision control is used for processing, calculating and predicting the real-time traffic data automatically by software based on a real-time unified traffic guidance information database according to a preset automatic guidance model, and automatically generating information such as travel time, congestion conditions and the like. And predicting the traffic flow of each road section and each intersection in a rolling mode, and providing a basis for induction.
The induction system software is provided with an external communication interface which adopts an HTTP (hyper text transport protocol) interface; and the user performs use configuration on the inducing system in a webpage mode.
A three-level induction system of a expressway based on a wide area radar aims to establish an intelligent traffic induction system which is real-time, linked and intelligent and can be trusted by traffic participants.
Real-time rendering
The traffic information issued by the system provides real-time scientific traffic guidance information through a comprehensive algorithm according to the traffic state data monitored by the wide-area radar microwave detector in real time.
Linkage type
The system can be linked with a video monitoring system, a traffic information acquisition system and an event monitoring system, and can coordinate video picture resources, traffic operation data resources and the like to provide more comprehensive traffic guidance information.
Intelligent control
The system can realize linkage among the guidance screens with different quantities, distances and positions through linkage coordination with other system resources, and provides different traffic guidance information.
The expressway three-level induction system based on the wide area radar mainly aims at relieving traffic jam states of an incoming ramp and an outgoing ramp. The expressway feature, the current traffic situation and the future traffic pressure are comprehensively considered, and the system adopts a mode of 'secondary detection + tertiary induction'.
And secondary detection, namely real-time detection is respectively carried out on the queuing of vehicles on the ramp and the state of main line traffic, a background system analyzes the congestion state and the level, the traffic time is calculated, a camera is linked to carry out picture snapshot after the congestion threshold is reached, and the background is connected with an induction system to release the congestion state of the ramp, the predicted traffic time and the scene screenshot of the congestion in real time.
And the three-stage induction is that induction screens at different distances from the ramp are displayed in a grading way, and the nearest induction screen at the upstream of the target point is the third-stage induction and guides the main line traffic to bypass. And the guidance screen slightly far from the upstream of the target point is a second-stage guidance screen, so that the vehicle is guided to get off the viaduct in advance when the traffic jam happens, and the traffic jam of the ramp under the viaduct is avoided. The induction screen farthest from the upstream of the target point is the first-stage induction, and guides a driver to re-plan a route when the congestion is serious, so that the congestion is avoided being aggravated due to excessive traffic demands.
The system mainly comprises a front-end information acquisition unit, a data processing unit and an induction release unit.
The information acquisition unit mainly comprises a wide area radar microwave detector and a snapshot camera, and is used for acquiring traffic operation parameters and snapshotting pictures of the operation state;
the data processing unit mainly comprises an application server, a storage server and the like, and processes, analyzes, evaluates and releases the content of the front-end acquired data through a database and a radar data platform;
the guidance issuing unit mainly comprises a guidance screen for realizing information issuing.
Congestion discrimination strategy
The system is distinguished in three levels: smooth, congested and seriously congested, and dynamic queuing data detected by a wide-area radar is used as a basis.
Is unblocked
If no queue is detected on the ramp, the ramp is in a smooth state.
Congestion
If the wide area radar detects vehicles running on the ramp, once a queuing phenomenon is detected, the system judges that the vehicles are congested, and the system can predict congestion dissipation time according to the queuing length value.
Severe congestion
If the queuing of the ramp is too long, the congested queuing can spread to a main road of the express way, so that the main road is slow to run or is congested, at the moment, if the main wide area radar detects that the main road is congested and queued, the congestion is judged to be severe, and the dissipation time is analyzed and predicted according to the queuing length.
Information distribution logic
If the unblocked state is detected, the induction screen displays unblocked, the system displays release information on the third-level induction screen, and adopts a rolling screen mode, as shown in FIG. 3, the unblocked state and a road network schematic diagram are displayed; as shown in fig. 4, a promotional slogan is displayed.
If the congestion state is detected, the guidance screen displays the congestion, the system displays the release information on the second level guidance screen and the third level guidance screen, and a rolling screen mode is adopted, as shown in fig. 5, the 'congestion', the predicted passing time determined according to the actual traffic state and a road network schematic diagram are displayed; as shown in fig. 6, a snapshot of the camera is displayed.
If the traffic congestion state is serious, the guidance screen displays the serious congestion, the system displays the release information on the first level guidance screen, the second level guidance screen and the third level guidance screen, and a rolling screen mode is adopted, as shown in FIG. 7, the 'serious congestion', the predicted traffic time determined according to the actual traffic state and a road network schematic diagram are displayed; as shown in fig. 8, a snapshot of the camera is displayed.
Application bright spots
High precision, all-weather refined perception
Based on the wide area radar principle, the system is not influenced by severe weather, and can sense the traffic flow data of the road network stably and accurately in real time.
Real and quantitative reflection of traffic running state
The high-precision and quantitative road network operation capability is reflected, the actual road network operation condition is grasped, and the road network operation state is analyzed.
Intelligent model algorithm
According to the real-time traffic state, through a mature detection model and an induction algorithm, traffic data research and judgment and traffic image snapshot are realized, the congestion state and the predicted traffic time are accurately judged, the real traffic state can be reflected, and accurate and credible induction information is provided.
Three-level linkage induction control
The guidance strategy can be judged according to the traffic jam state, the guidance screens at different positions are linked to display guidance information in a grading mode, and traffic participants can plan routes in advance more timely to avoid the jam.
Wide-area radar microwave detector
Different from traditional section microwave vehicle inspection ware, wide area radar microwave detector adopts MIMO system antenna, a plurality of transmitting antenna and a plurality of receiving antenna, through the quick electric scanning signal of a plurality of antenna transmission, throws the radar wave on the road surface with very fast cycle to cover great detection range. And the plurality of receiving antennas receive and comprehensively analyze the continuous echo signals reflected by the object, so that the environment and the target in the monitored area are imaged in real time. Through background learning and traffic target track recognition, effective traffic targets are distinguished, and real-time tracking processing is carried out to form traffic parameter information required by each system in traffic.
The lane can be calibrated according to actual road channeling information by matching with customized software, the vehicle queuing length, the vehicle number and the vehicle distribution information of each lane are output, a plurality of detection lines are set according to the data requirements of system detection, and the traffic flow statistical information and the vehicle passing pressure occupation information of virtual coils of each lane at the positions of the detection lines are collected.
By combining the behavior characteristics of vehicle track tracking, the wide-area radar microwave detector can analyze the behavior of the vehicle, judge traffic events such as abnormal parking, reverse driving, ultra-high speed, ultra-low speed, queuing and over-limit and the like, and output alarm signals.
The main technical parameters are as follows:
the wide-area radar microwave detector adopts a two-dimensional active scanning type array radar microwave detection technology, and microwave signals reliably detect dynamic or static targets of each lane on a road at a scanning frequency of 20 times per second along a transmitting direction;
the wide-area radar microwave detector can carry out large-area detection, the normal detection area along the incoming direction can reach 200 meters, and 8 lanes can be detected simultaneously;
up to 128 targets can be tracked and detected simultaneously;
the wide-area radar microwave detector tracks and detects position coordinates (x, y), speed (Vx, Vy) and vehicle type classification of each target, is provided with graphical operation software, and displays real-time information such as tracked conditions of each target in a detection area and the real-time position, speed and vehicle length of a vehicle in real time;
the multifunctional data detection function can replace a plurality of groups of other types of detectors and detect traffic data such as flow, average speed, occupancy, headway, inter-vehicle distance and the like of a plurality of sections of each lane;
the precision of the traffic flow is as follows: more than or equal to 95 percent;
speed detection accuracy: more than or equal to 95 percent;
sampling period: the time range of 1-3600 seconds can be set by a user;
interface: RS485 or RJ 45;
the wide area radar microwave detector adopts a forward detection mode, supports normal installation and side installation, can conveniently utilize the existing rod piece, and has the installation height of 6-10 m;
the remote debugging and upgrading can be conveniently realized through the network;
the device can stably work in all-weather environments including severe weather such as rain, snow, fog, haze, strong wind, freezing, hailstones, sand and dust and has self-calibration and fault self-diagnosis functions;
temperature: -40 ℃ to +85 ℃; humidity: maximum 100%; crash/vibration tolerance: 100g/rms, 14 g/rms;
power supply: 12-24 VDC; power: 9W;
overvoltage and lightning protection;
the shell reaches the IP67 protection standard;
MTBF is more than or equal to 10 years, and 7-24 continuous uninterrupted work.
As shown in fig. 2, a road surface induction method based on a wide area radar is detailed as follows:
step S1, adding the information of the information acquisition equipment into the induction system; the acquisition equipment, the data processing unit and the induction release unit are connected through a communication protocol to form an induction system, after hardware equipment is built into the system, basic information of a corresponding radar, a monitoring camera and an induction screen is added into the three-level induction system, and the basic information comprises: firstly, radar: equipment number, IP address, longitude and latitude, installation point location name. Monitoring: equipment number, IP address, user name, password, longitude and latitude, and installation point location name. ③ inducing the screen: equipment number, IP address, longitude and latitude, installation point location name.
Step S2, setting the corresponding relation between the triggering condition and the execution structure in the induction system; after adding information of each device, the guidance system needs to set corresponding conditions and result relations to associate the radar, the monitoring screen and the guidance screen. Therefore, monitoring snapshot can be judged and executed according to conditions through events monitored by the radar, and finally event information is pushed to a specified induction screen.
The data format of the trigger condition set by the induction system is as follows:
if 1: the # 1 radar detects a speeding traffic event.
If 2: the radar # 2 detects a retrograde traffic event.
If 3: the 3# radar detects traffic incidents of illegal lane changes.
If 4: the radar # 4 detects a traffic event that is out of line.
If 5: the # 5 radar detects an overflow traffic event.
If 6: the 6# radar detects a congested traffic event.
......
If n: the n # radar detects a traffic event of xx.
The condition relation is as follows: if 1 and (or) if 2 and (or) ·.
The execution of 1: xx monitoring and taking a snapshot to generate a result 1.
Execution of 2: xx monitoring and taking a snapshot to generate a result 2.
The execution of 6: xx monitoring and taking a snapshot to generate a result 3.
...
And finally executing the steps of 1: results 1 were posted on xx Induction screens.
And finally executing the following steps: result 2 was posted on xx inducible screens.
......
And finally executing n: results n were posted on xx inducible screens.
S3, fusing and judging the events detected by the acquisition equipment and generating a time processing result for issuing; and when the radar detects an event, judging in the trigger condition list, and analyzing whether the trigger condition is met. When a certain trigger condition is met, the appointed monitoring under the condition is ordered to carry out snapshot, and the snapshot pictures and the character information of event analysis are issued to the appointed inducing screen (1 or more inducing screens). Namely, the execution steps are as follows: conditional judgment (radar event) - > intermediate execution (monitoring snapshot) - > result execution (induced output).
After the radar detects a traffic event, the system can analyze and snapshot images of the traffic event in time and release event information (character information and image information) to the corresponding induction screen, so that drivers can be reminded of avoiding in time, and traffic jam and accidents are reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The road surface guidance system based on the wide area radar is characterized by comprising an information acquisition unit, a data processing unit and a guidance release unit, wherein the output end of the information acquisition unit is connected with the input end of the data processing unit, the output end of the data processing unit is connected with the input end of the guidance release unit, and the information acquisition unit is used for capturing traffic operation parameter acquisition and operation states in real time; the data processing unit is used for processing the front-end collected data through the database and the radar data platform and analyzing, evaluating and releasing contents; and the induction issuing unit is used for issuing the real-time information issued by the data processing unit.
2. The wide-area radar-based roadway guidance system of claim 1, wherein the information acquisition unit comprises a wide-area radar microwave detector and a monitoring camera, an output end of the monitoring camera is connected with an input end of the data processing unit, and an output end of the wide-area radar microwave detector is connected with an input end of the data processing unit.
3. The wide-area radar-based roadway guidance system of claim 2, wherein the data processing unit comprises an application server and a storage server, the application server is in communication connection with the storage server, a database is installed on the storage server, a data radar platform is installed on the application server or the storage server, and guidance system software is installed on the application server.
4. The wide-area radar-based road surface induction system according to claim 3, wherein the database stores the correspondence among the serial number, the IP address, the longitude and latitude, the installation point location name, the user name and the password information of the front-end acquisition device, and stores the correspondence between the configuration information of the front-end device and the user; sending back the processed result data to the front-end acquisition equipment for storage; and storing the data information of the user according to the priority relation.
5. The wide-area radar-based roadway guidance system of claim 4, wherein the radar data platform is a front-end wide-area radar detector which collects, stores and analyzes device data, converts the analyzed radar data into event information, provides the event information to guidance system software for use, and generates a traffic volume and event data query interface.
6. The wide-area radar-based road surface induction system according to claim 5, wherein the induction system software comprises an information distribution and study module, an information decision control module, a data storage management module and a data fusion analysis module, wherein an output end of the data fusion and distribution module is connected with an input end of the information distribution and study module, an output end of the information distribution and study module is respectively connected with an input end of the information decision control module and an input end of the data storage management module, and an output end of the information decision control module is connected with an input end of the data storage management module.
7. The wide-area radar-based roadway guidance system of claim 6, wherein the guidance system software is provided with an external communication interface, and the communication interface adopts an HTTP (hyper text transport protocol) interface; and the user performs use configuration on the inducing system in a webpage mode.
8. A road surface induction method based on a wide area radar is characterized by comprising the following steps:
s1, adding the information of the information acquisition equipment into the induction system;
s2, setting the corresponding relation between the trigger condition and the execution structure in the induction system;
and S3, fusing and judging the events detected by the acquisition equipment, and generating and issuing time processing results.
9. The wide-area radar-based road surface induction method according to claim 8, wherein the step S1 further includes the steps of:
and S11, connecting the information acquisition equipment, the server and the guidance screen through a communication protocol to form a guidance system.
10. The wide-area radar-based road surface induction method according to claim 9, wherein said step S3 further includes the steps of:
s31, analyzing the event detected by the acquisition equipment in a trigger condition list to judge whether the trigger condition is met, if so, instructing corresponding snapshot equipment to snapshot, and issuing the snapshot picture and the text information analyzed by the event to a specified induction screen, if not, giving up the event;
the triggering condition is overspeed or retrograde motion or illegal lane change or queuing overrun or overflow or congestion;
the acquisition equipment comprises a wide area radar microwave detector and a monitoring camera.
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| CN202010783812.3A CN111932876A (en) | 2020-08-06 | 2020-08-06 | Road surface induction system and method based on wide area radar |
| PCT/CN2020/113521 WO2022027763A1 (en) | 2020-08-06 | 2020-09-04 | Road surface induction system and method based on wide area radar |
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| CN115171385B (en) * | 2022-07-06 | 2022-12-27 | 合肥雷能信息技术有限公司 | Traffic incident detection system based on millimeter wave radar and video linkage |
| CN115938126B (en) * | 2023-01-06 | 2023-05-26 | 南京慧尔视智能科技有限公司 | Radar-based overflow detection method, device, equipment and storage medium |
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