CN112419746A - Vehicle speed self-monitoring method for highway traffic - Google Patents
Vehicle speed self-monitoring method for highway traffic Download PDFInfo
- Publication number
- CN112419746A CN112419746A CN201910766620.9A CN201910766620A CN112419746A CN 112419746 A CN112419746 A CN 112419746A CN 201910766620 A CN201910766620 A CN 201910766620A CN 112419746 A CN112419746 A CN 112419746A
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- mounted device
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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
-
- 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
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention relates to a method for autonomously judging whether the running speed of a vehicle on a highway exceeds a speed limit or not and providing an overspeed warning for a driver. The method relates to vehicle-mounted equipment with satellite positioning, 5G communication and a vehicle-mounted camera interface, wherein the vehicle-mounted equipment processes according to a video image of a vehicle-mounted camera in an environment incapable of receiving positioning information, and judges whether the vehicle exceeds the speed and the degree of the speed through a milepost or a milestone according to the processing result. Meanwhile, when the vehicle has an overspeed trend, the driver is warned in time.
Description
Technical Field
The invention relates to the field of vehicle speed measurement, in particular to a method for measuring the vehicle speed of a vehicle in real time by using a highway mileage mark through vehicle-mounted equipment and a vehicle-mounted camera.
Background
Since the road condition of the expressway is much better than that of a common road, the common vehicles are easy to overspeed on the expressway. Especially, when the speed limit index is changed correspondingly to ensure the safety along with the change of the road condition, the driver is not familiar with the road condition or does not see the speed limit mark, and the speed is not reduced correspondingly, so that the overspeed is caused. This brings great potential safety hazard to the whole safety of highway traffic. Therefore, in the driving process of the expressway, it is necessary to enable a driver to know the change of the speed limit index in time or discover overspeed and stop in time.
The traditional vehicle speed measuring method on the expressway mainly comprises a radar, a laser, a sensor and the like, but the method only belongs to a post supervision mode and cannot prevent overspeed, particularly when a driver does not see a speed limit sign. The existing navigation software often has a self-speed measurement function, but in the situation of mountainous areas, viaducts or tunnels, satellite positioning signals are poor, and the navigation software cannot timely position and measure the speed of a vehicle.
Disclosure of Invention
The invention adds a vehicle-mounted device on a vehicle, the device is provided with a satellite positioning function and a special interface for receiving a video image of a vehicle-mounted camera, and the device takes a shot milestone in the middle of a highway as a reference to realize the speed measurement of the vehicle. The vehicle-mounted equipment obtains the time of passing through each mark plate according to the processing of the video of the vehicle-mounted camera by the vehicle, and the passing speed of the vehicle can be calculated according to the time. The vehicle-mounted equipment finds whether the vehicle has the possibility of overspeed or not in time according to the change of the vehicle speed, the type of the vehicle and the speed limit index of the vehicle, and prevents the overspeed caused by the continuous increase of the vehicle speed in time through voice warning or an interface with a vehicle control system.
The vehicle-mounted equipment completes autonomous speed measurement and calculates the speed change trend, and the speed can be controlled by warning a driver or a vehicle control system in time, so that overspeed is avoided, and the safety of road traffic is ensured.
The method comprises the following steps:
the vehicle-mounted equipment receives the current high-speed running road information of the vehicle through 5G internet of things communication, wherein the current high-speed running road information comprises a current high-speed road section name, speed limit information and the like;
the vehicle-mounted equipment processes the video image of the vehicle-mounted camera, marks the video with the signboard, and identifies the number on the signboard;
if the numbers on two adjacent appearing signboards are continuous, according to the following steps: calculating the current speed of the vehicle by 100/passing time (second), and converting the unit of the calculation result into kilometers per hour from meters per second;
and the vehicle-mounted equipment compares the vehicle speed calculation result with the speed limit index to judge whether the vehicle has overspeed on the road section. And according to the vehicle speed variation trend, giving a warning when the vehicle speed is close to the speed limit index and the vehicle is in an acceleration state.
The invention is different from the traditional speed measuring method in that the vehicle is in the measured position and the measuring equipment is only installed at a specific place. The method of the invention is that the vehicle autonomously tests the speed at any time and can give warning in time according to the acceleration trend and the speed limit index of the vehicle. Therefore, the method of the invention can control the vehicle overspeed more comprehensively and thoroughly.
Detailed Description
When the vehicle is in the range capable of normally receiving satellite signals, the vehicle-mounted equipment adopts satellite positioning and calculates the vehicle speed, and judges whether the vehicle is in an acceleration state or not according to the change of the vehicle speed.
When the vehicle speed of the road section through which the vehicle is going to pass cannot be measured and calculated through satellite positioning, the vehicle-mounted equipment is immediately switched to adopt the method;
processing the vehicle-mounted video according to the method, and listing a number sequence of the calculation result (for the situation that the number on the signboard is discontinuous, namely a certain signboard is not shot by a camera, interpolation is carried out by adopting a front and back data arithmetic mean mode):
V1, V2, ……, VN, ……
in the sequence, when a certain numerical value is close to the speed limit index and the current sequence is in increasing order, the driver is warned to keep the vehicle to obey the specific speed limit regulation;
and if the numerical value in the numerical sequence is larger than the speed limit index, uploading the overspeed information to a communication management system.
Claims (6)
1. A method for judging whether a vehicle runs at an overspeed on a highway and providing an overspeed warning is characterized in that vehicle-mounted equipment is provided with a satellite positioning function or a mileage mark in a video of a vehicle-mounted camera for processing and calculating, the running speed of the vehicle is monitored in real time, the vehicle-mounted equipment is provided with a 5G internet of things communication function, passing road section traffic management information is received in real time, whether the vehicle has the overspeed running trend or not is judged rapidly, a driver is warned in time, and once the vehicle runs at an overspeed, the overspeed degree is determined and then the vehicle is uploaded to a traffic management system.
2. The method as claimed in claim 1, wherein the vehicle-mounted device determines the driving speed of the vehicle by calculating the milepost located in the middle median barrier of the expressway in any two consecutive frames of the video of the vehicle-mounted camera when the satellite positioning information cannot be received.
3. The method as claimed in claim 1, wherein the vehicle-mounted device obtains traffic management information of a current driving section of the expressway in real time through a wireless communication mode.
4. The method as claimed in claim 1, wherein the vehicle-mounted device determines whether the vehicle has a tendency of speeding according to traffic information of the highway section and a vehicle speed change.
5. The method as claimed in claim 1, wherein the vehicle-mounted device warns the driver to remind the driver to avoid speeding when the vehicle has a tendency to run at speed.
6. The method as claimed in claim 1, wherein the vehicle-mounted device communicates information including current time, the vehicle brand, driving speed, degree of overspeed, section where overspeed occurred, duration of overspeed occurred, etc. to a traffic management system when overspeed actually occurred on the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910766620.9A CN112419746A (en) | 2019-08-20 | 2019-08-20 | Vehicle speed self-monitoring method for highway traffic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910766620.9A CN112419746A (en) | 2019-08-20 | 2019-08-20 | Vehicle speed self-monitoring method for highway traffic |
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| Publication Number | Publication Date |
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| CN112419746A true CN112419746A (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910766620.9A Pending CN112419746A (en) | 2019-08-20 | 2019-08-20 | Vehicle speed self-monitoring method for highway traffic |
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