CN112116818B - Speed measurement snapshot method and device for intersection - Google Patents
Speed measurement snapshot method and device for intersection Download PDFInfo
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- CN112116818B CN112116818B CN201910536857.8A CN201910536857A CN112116818B CN 112116818 B CN112116818 B CN 112116818B CN 201910536857 A CN201910536857 A CN 201910536857A CN 112116818 B CN112116818 B CN 112116818B
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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
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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
- G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
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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
- G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
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Abstract
The invention discloses a speed-measuring snapshot method and a speed-measuring snapshot device for crossroads, which are used for carrying out speed-measuring violation snapshot at the crossroads, wherein a sensing device is arranged at a preset distance on each branch road of the crossroads, the sensing device outputs a corresponding sensing signal after sensing that a vehicle enters the crossroads, a speed-measuring snapshot device is arranged at the center of the crossroads, the speed-measuring snapshot device turns to a corresponding preset position after receiving the sensing signal output by the sensing device, continuously tracks and starts to record a video after detecting the position of the vehicle, carries out speed measurement on the vehicle, compares the measured speed with the speed limit value of the corresponding branch road, carries out snapshot if the speed limit value of the corresponding branch road is exceeded, and uploads the video and the snapshot violation pictures as violation records. The method can realize that only one speed-measuring illegal snapshot device is deployed at a complex multi-intersection with small vehicle traffic volume, thereby reducing the deployment cost of the device.
Description
Technical Field
The invention belongs to the technical field of traffic speed measurement, and particularly relates to a speed measurement snapshot method and device for an intersection.
Background
With the development of social economy, more and more families with vehicles are provided, and the vehicles become essential vehicles in life as transportation and transportation tools. The traffic safety increasingly affects the traveling of people, and the compliance with traffic rules is an important prerequisite for ensuring the traffic safety. Therefore, speed measurement and speed limitation are carried out on roads, and illegal behaviors are subjected to snapshot punishment, so that the method is a common technical means in traffic management.
At present, single vehicle speed-measuring illegal snapshot equipment can measure speed of one direction or two directions of a road, and at some complex multi-intersection roads, a plurality of speed-measuring illegal snapshot equipment need to be deployed to realize speed-measuring illegal snapshot equipment, so that the implementation cost is high.
According to the intersection overspeed violation snapshot technical scheme in the prior art, speed-measuring violation snapshot equipment can be configured in each direction of the intersection, and only two pieces of speed-measuring violation snapshot equipment can be configured according to the time of traffic signal lamps, so that speed-measuring snapshot is performed in four directions in a time-sharing manner.
However, in the prior art, a plurality of speed-measuring illegal snapshot devices are required to be arranged at one intersection, and the cost performance is not high for some complex multi-way ports, especially complex multi-way ports with small vehicle traffic volume.
Disclosure of Invention
The invention aims to provide a speed-measuring snapshot method and device for an intersection, which are used for only deploying one speed-measuring illegal snapshot device at a complex multi-intersection with small vehicle traffic volume, so that the deployment cost of the device is reduced.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a method of taking a candid photograph that tests speed of intersection for the intersection tests the speed and breaks rules and regulations and take a candid photograph, preset distance department sets up induction system on every branch road of intersection, induction system is after sensing the vehicle and getting into the intersection, and the output corresponds the sensing signal, sets up the candid photograph device that tests speed at the center of intersection, the candid photograph device that tests speed is preset the preset, and the preset has corresponding relation with candid photograph device turned angle, branch road and induction system sensing signal that tests speed, the method of taking a candid photograph that tests speed of intersection includes:
after receiving the sensing signal output by the sensing device, the speed measuring snapshot device turns to a corresponding preset position, continuously tracks and starts to record a video after detecting the position of the vehicle;
and (3) measuring the speed of the vehicle, comparing the measured speed with the speed limit value of the corresponding branch, if the speed limit value of the corresponding branch is exceeded, taking a snapshot, and uploading and storing the video and the snapshot violation pictures as violation records.
Further, the speed measurement snapshot method for the intersection further comprises the following steps:
continuously tracking the vehicle, and updating the current corresponding preset position and the speed limit value of the corresponding branch according to the rotation angle of the speed measuring snapshot device;
and (3) measuring the speed of the vehicle, comparing the measured speed with the speed limit value of the current corresponding branch, if the speed limit value of the current corresponding branch is exceeded, taking a snapshot, and uploading and storing the video and the snapshot violation pictures as violation records.
Further, the speed measurement snapshot method for the intersection further comprises the following steps:
when the speed measuring snapshot device tracks the first vehicle, after the sensing signal output by the sensing device is received again, if the first vehicle is not detected to be overspeed yet, the first vehicle is continuously tracked until the first vehicle passes through the center of the intersection, and then the first vehicle turns to the preset position corresponding to the sensing signal just received; if the first vehicle is detected to be overspeed, uploading and storing the video and the captured violation pictures as violation records, and turning to a preset position corresponding to the induction signal just received;
continuously tracking and starting video recording after the second vehicle position is detected by the new preset position;
and (3) measuring the speed of the second vehicle, comparing the measured speed with the speed limit value of the corresponding branch, if the speed limit value of the corresponding branch is exceeded, taking a snapshot, and uploading the video and the snapshot violation pictures to be stored as violation records.
Further, the speed measurement snapshot method for the intersection further comprises the following steps:
the preset positions corresponding to different branches of the intersection are set with priorities, and when a plurality of induction signals output by the induction devices are received within a preset time interval, the preset positions with high priorities are selected preferentially to carry out speed measurement snapshot.
Further, the speed measurement snapshot method for the intersection further comprises the following steps:
when the speed measuring snapshot device tracks the first vehicle, if the first vehicle is not detected to be overspeed at the moment, the first vehicle is continuously tracked until the first vehicle passes through the center of the intersection, and then the first vehicle turns to a preset position with low priority; if the first vehicle is detected to be overspeed, uploading and storing the video and the captured violation pictures as violation records, and turning to a preset position with low priority;
continuously tracking and starting video recording after a second vehicle position is detected at a preset position with low priority;
and (3) measuring the speed of the second vehicle, comparing the measured speed with the speed limit value of the corresponding branch, if the speed limit value of the corresponding branch is exceeded, taking a snapshot, and uploading the video and the snapshot violation pictures to be stored as violation records.
Further, the speed measurement snapshot method for the intersection further comprises the following steps:
when the second vehicle is not detected by the preset position with low priority, all the preset positions are subjected to cruising, if a moving vehicle is detected, the cruising is stopped, the detected vehicle is used as the second vehicle, and the tracking is continuously carried out and the video recording is started;
and (3) measuring the speed of the second vehicle, comparing the measured speed with the speed limit value of the corresponding branch, if the speed limit value of the corresponding branch is exceeded, taking a snapshot, and uploading the video and the snapshot violation pictures to be stored as violation records.
Optionally, the cruising all the preset positions includes:
and cruising all preset bits according to the priority order.
Further, the speed measurement snapshot method for the intersection further comprises the following steps:
recording a branch which is blown away by a first vehicle, cruising all preset positions according to the sequence of priority when a second vehicle is not detected by the preset position with low priority, putting the preset position corresponding to the branch which is blown away by the first vehicle at the end during cruising, stopping cruising if a moving vehicle is detected, continuously tracking and starting to record a video by taking the detected vehicle as the second vehicle;
and (3) measuring the speed of the second vehicle, comparing the measured speed with the speed limit value of the corresponding branch, if the speed limit value of the corresponding branch is exceeded, taking a snapshot, and uploading the video and the snapshot violation pictures to be stored as violation records.
The invention also provides a speed measurement snapshot device of the intersection, which is used for performing speed measurement violation snapshot at the intersection.
The invention provides a speed-measuring snapshot method and device for an intersection, which are characterized in that only one speed-measuring illegal snapshot device is arranged at a complex multi-intersection with small vehicle traffic volume, the corresponding relation between preset positions and the rotation angle of a speed-measuring snapshot device, a branch circuit and induction signals of the branch circuit and the induction device is established, and after the induction signals output by the induction device are received, the corresponding preset positions are switched to carry out speed-measuring snapshot. The method can realize that only one speed-measuring illegal snapshot device is deployed at a complex multi-intersection with small vehicle traffic volume, thereby reducing the deployment cost of the device.
Drawings
FIG. 1 is a schematic diagram of a complex multi-way interface according to an embodiment of the present invention;
fig. 2 is a flowchart of a speed measurement snapshot method for an intersection according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The application provides a speed measurement snapshot method for an intersection, which can be applied to a complex multi-way intersection shown in figure 1. The complex multi-branch intersection shown in fig. 1 is only one embodiment, and the present application may be applied to intersections with more branches, and may also be applied to intersections with 2, 3, or 4 branches, which will not be described in detail below.
In the complex multi-way intersection in fig. 1, which has 5 branches, the speed measuring and capturing device of the present embodiment is disposed at the center of the intersection, and can be installed directly above the center of the multi-way intersection through a fixed installation rod, for example. The speed measuring snapshot device adopts the pan-tilt camera with the speed measuring module, can directly detect the speed, and conducts snapshot and vehicle tracking towards different branches under the rotation of the pan-tilt. The preset distance on each branch is provided with an induction device, the induction device supports induction according to the passing direction and outputs induction signals, vehicles running into the crossing direction can trigger the induction signals through the induction device, and the induction signal connecting wires output by the induction device are connected with the induction signal input ports of the speed measuring snapshot device one by one. The preset position needs to be preset according to the direction of each branch on the speed measuring snapshot device, information such as angle information (upper and lower angles and left and right rotation angles) of rotation of the holder and focal length is reserved in the information of the preset position, the information of the preset position and the source of the induction signal need to be bound in the speed measuring snapshot device, and meanwhile, speed limit configuration information (different speed limit thresholds can be set according to different branches) can be bound in the information.
It should be noted that the sensing device in the present application may be an induction coil, an infrared detection device, or a camera, and the present application does not limit this.
In one embodiment, the preset bit information configured by the speed measurement snapshot apparatus is shown in table 1:
FIG. 1 shows a schematic view of a
According to table 1, the speed measuring snapshot device rotates to a preset position after receiving the input of the corresponding sensing signal, and the speed measuring snapshot is performed on the vehicle on the branch.
Embodiment 1, as shown in fig. 2, provides a method for snapshot that tests speed of intersection, and preset distance department sets up induction system on every branch road of intersection, and induction system passes through the direction response back according to the vehicle, and the output corresponds the sensing signal, sets up the snapshot device that tests speed at the center of intersection, and the snapshot device that tests speed is preset the preset bit, and the preset bit has corresponding relation with snapshot device turned angle, branch road and its induction system sensing signal that tests speed, the method for snapshot that tests speed of intersection includes:
after receiving the sensing signal output by the sensing device, the speed measuring snapshot device turns to a corresponding preset position, continuously tracks and starts to record a video after detecting the position of the vehicle;
and (3) measuring the speed of the vehicle, comparing the measured speed with the speed limit value of the corresponding branch, if the speed limit value of the corresponding branch is exceeded, taking a snapshot, and uploading and storing the video and the snapshot violation pictures as violation records.
Specifically, the speed measuring snapshot device is provided with a preset position, the preset position corresponds to the rotation angle of the speed measuring snapshot device, the branch circuit and the induction signal of the induction device, and the corresponding relation is shown in table 1. Therefore, after the induction signal output by the induction device is received, the corresponding preset position can be turned to.
For example, when receiving the sensing signal output by the sensing device 1, the sensing device 1 outputs the sensing signal when sensing that the vehicle enters the intersection from the branch 1, and after receiving the sensing signal, the speed measurement snapshot device turns to the Preset position Preset1 according to the table 1, and faces the branch 1, so as to detect the vehicle entering the branch 1.
The tracking is continued and the video recording is started after the vehicle position is detected, and the detection and tracking video recording of the vehicle position are relatively mature technologies in the field and are not described herein again.
The speed measuring snapshot device measures the speed of the vehicle, compares the measured speed with the speed limit value of the corresponding branch 1, if the speed limit value of the corresponding branch is exceeded, the snapshot is carried out, and the video and the snapshot violation pictures are uploaded and stored as violation records.
The speed limit value corresponding to the branch 1 is 60 (kilometers per hour), if the vehicle speed measured by the speed measuring snapshot device is less than 60, the vehicle is not overspeed, tracking is continued, and violation snapshot and uploading are not performed. Otherwise, uploading the recorded and snap-shot violation pictures and storing the pictures as violation records. The uploaded violation records may be saved to a central server or other storage device, without limitation. The central server stores the violation pictures/videos and generates violation records.
In one embodiment, the speed measurement snapshot method for the intersection further includes:
continuously tracking the vehicle, and updating the current corresponding preset position and the speed limit value of the corresponding branch according to the rotation angle of the speed measuring snapshot device;
and (3) measuring the speed of the vehicle, comparing the measured speed with the speed limit value of the current corresponding branch, if the speed limit value of the current corresponding branch is exceeded, taking a snapshot, and uploading and storing the video and the snapshot violation pictures as violation records.
This embodiment, the vehicle that traces speed snapshot device lasts, get into from branch road 1 when the vehicle, turn into branch road 4 after crossing the intersection, the speed snapshot device that tests speed tracks the vehicle and turns into other branch roads when, according to the turned angle of current speed snapshot device, compare Preset bit information in table 1, can judge the road information (branch road 4 that current vehicle got into, speed limit 50), the speed snapshot device that tests speed this moment can update the speed limit value of the current Preset bit that corresponds and the branch road that corresponds, the Preset bit that corresponds is Preset4, the branch road is branch road 4, the speed limit value is 50.
And comparing the updated speed limit value 50 with the speed measurement result, if the speed exceeds the speed limit value, capturing the violation picture, and uploading and storing the recorded and captured violation picture as a violation record.
By the method, the vehicles entering the intersection are tracked in the whole process, and the speed measuring snapshot device stops working after the vehicles run out of the monitoring picture. Or the vehicle stops working after receiving the output of the vehicle-out induction signal output by the corresponding branch induction device, and the invention is not limited.
In one embodiment, it is also contemplated that while tracking one vehicle, another vehicle enters the intersection.
Embodiment 2, the method for snapshot of speed measurement at the intersection in this embodiment further includes, on the basis of embodiment 1:
when the speed measuring snapshot device tracks the first vehicle, after the sensing signal output by the sensing device is received again, if the first vehicle is not detected to be overspeed yet, the first vehicle is continuously tracked until the first vehicle passes through the center of the intersection, and then the first vehicle turns to the preset position corresponding to the sensing signal just received; if the first vehicle is detected to be overspeed, uploading and storing the video and the captured violation pictures as violation records, and turning to a preset position corresponding to the induction signal just received;
continuously tracking and starting video recording after the second vehicle position is detected by the new preset position;
and (3) measuring the speed of the second vehicle, comparing the measured speed with the speed limit value of the corresponding branch, if the speed limit value of the corresponding branch is exceeded, taking a snapshot, and uploading the video and the snapshot violation pictures to be stored as violation records.
Specifically, after the first vehicle enters the intersection (assuming that the first vehicle enters from the branch 1), the speed measurement snapshot device performs speed measurement snapshot on the first vehicle according to the method described above. In the process of tracking the first vehicle, the second vehicle enters the intersection, and it is assumed that the sensing device corresponding to the branch 2 is triggered to output a sensing signal.
At this moment, the snapshot device that tests the speed receives the sensing signal of the induction system output that branch road 2 corresponds, divides following two kinds of circumstances to handle:
case 1: and if the first vehicle does not reach the intersection center and overspeed is not detected, continuing to track the first vehicle until the first vehicle passes through the intersection center, turning to the Preset position Preset2 corresponding to the branch 2, continuing to track the vehicle on the branch 2, wherein the subsequent speed measurement snapshot process is the same as that in embodiment 1, and is not repeated here.
In this embodiment, after the first vehicle passes through the intersection center, the speed measurement snapshot device may also directly stop at the intersection center, wait for the second vehicle to pass through the intersection center, and track and measure the speed of the second vehicle by the speed measurement snapshot device, and the processing flow is the same as that in embodiment 1.
In this case, the entire process of completely tracking the entering and exiting of the vehicle is not performed as in the processing flow of embodiment 1, and it is considered that the driving habit of the vehicle owner can be analyzed already in the process of tracking the entering, and the driving habit is good if the entering process is not overspeed, and the possibility of overspeed in the process of exiting is relatively low.
Case 2: if the first vehicle does not arrive at the center of the intersection and overspeed is triggered, the recorded and captured violation pictures are uploaded and stored as violation records, the first vehicle stops being tracked continuously, the vehicle turns to the Preset position corresponding to the induction signal just received, namely turns to the Preset position Preset2 corresponding to the branch 2, the vehicle on the branch 2 is tracked continuously, and the subsequent speed measurement and capture process is the same as that in embodiment 1, and is not repeated here.
In this case, it is considered that the first vehicle has overspeed, the law violation has been collected, and it is of little interest to continue the tracking.
It should be noted that, in embodiment 2, if the first vehicle has already passed through the intersection and shifted to another branch, the tracking is directly stopped, the cradle head is immediately rotated to the branch 2, and the vehicle on the branch 2 is continuously tracked, which belongs to a special case of case 1 and is not described herein again. When the vehicle is switched into other branches through the intersection, at least one branch distance is tracked and captured, if overspeed is triggered, illegal behaviors are collected, and the significance of continuous tracking is not great; if overspeed is not triggered, the driving habit of the vehicle owner is good, and the possibility of overspeed in the process of going out is relatively low.
In one embodiment, a situation where a plurality of vehicles simultaneously trigger the sensing device to output the sensing signal is also considered.
Embodiment 3, the speed measurement snapshot method for the intersection of this embodiment, on the basis of the two embodiments, further includes:
the preset positions corresponding to different branches of the intersection are set with priorities, and when a plurality of induction signals output by the induction devices are received within a preset time interval, the preset positions with high priorities are selected preferentially to carry out speed measurement snapshot.
The setting of the priority is shown in table 1, where 1-N indicates the level of priority and 1 indicates the highest priority. For example, a first vehicle and a second vehicle almost simultaneously pass through the sensing device, the sensing device outputs sensing signals almost simultaneously, and the speed measuring snapshot device receives the sensing signals of the branch 1 and the branch 4 almost simultaneously within a preset time interval (for example, within 1 s).
At this moment, the speed measurement snapshot device obtains the priority (branch 1 is higher than branch 4) corresponding to each Preset position according to the information in table 1, and the speed measurement snapshot device preferentially rotates to Preset position Preset1, namely turns to branch 1, and tracks the first vehicle.
It should be noted that the priority determination is performed only when multiple vehicles enter simultaneously, and the priority determination is not performed after the vehicles enter the branch. After the speed measurement snapshot is performed on the preset position with the high priority, the vehicle on the branch corresponding to the preset position with the low priority may still run at the intersection, and the preset position with the low steering priority may be continuously tracked, which will be described in the subsequent embodiment. Considering that after the speed measurement snapshot is performed on the preset position with the high priority, the vehicle on the branch corresponding to the preset position with the low priority may already fly away from the intersection, and therefore the preset position with the low priority may not be processed any more.
Embodiment 4 and the method for snapshot of speed measurement at the intersection in this embodiment further include, on the basis of embodiment 3:
when the speed measuring snapshot device tracks the first vehicle, if the first vehicle is not detected to be overspeed at the moment, the first vehicle is continuously tracked until the first vehicle passes through the center of the intersection, and then the first vehicle turns to a preset position with low priority; if the first vehicle is detected to be overspeed, uploading and storing the video and the captured violation pictures as violation records, and turning to a preset position with low priority;
continuously tracking and starting video recording after a second vehicle position is detected at a preset position with low priority;
and (3) measuring the speed of the second vehicle, comparing the measured speed with the speed limit value of the corresponding branch, if the speed limit value of the corresponding branch is exceeded, taking a snapshot, and uploading the video and the snapshot violation pictures to be stored as violation records.
In this embodiment, when the speed measurement snapshot is performed on the first vehicle, similar to the process of embodiment 2, when the first vehicle is not found to be overspeed, after the first vehicle passes through the intersection center position, the speed measurement snapshot is performed in the direction of the turning branch 4.
It should be noted that, after turning to Preset4, the second vehicle must be detected by the speed measurement snapshot device as long as the second vehicle is still running on the branch 4, but it is also possible that the second vehicle on the branch 4 has already exited the branch 4, and the following description is made in two cases.
Case 1: the speed of the second vehicle is slow, and the second vehicle can be detected on the branch 4, then the speed measurement snapshot is performed on the second vehicle, and the process of performing the speed measurement snapshot on the second vehicle is the same as that in embodiment 1, and is not repeated here. This case can be applied to the procedure of example 4.
Case 2: the speed of the second vehicle is faster, the second vehicle is switched to other branches after passing through the intersection, and the second vehicle is not detected at the moment.
In case 2, supplementary explanation is made below by way of three examples.
Embodiment 5, the method for snapshot of speed measurement at intersection further includes:
when the second vehicle is not detected by the preset position with low priority, all the preset positions are subjected to cruising, if a moving vehicle is detected, the cruising is stopped, the detected vehicle is used as the second vehicle, and the tracking is continuously carried out and the video recording is started;
and (3) measuring the speed of the second vehicle, comparing the measured speed with the speed limit value of the corresponding branch, if the speed limit value of the corresponding branch is exceeded, taking a snapshot, and uploading the video and the snapshot violation pictures to be stored as violation records.
In this embodiment, cruising is performed on all preset positions, which may be performed randomly, or according to a sequence (a geographical position sequence or a preset position sequence), and after a moving vehicle is found by cruising, a speed measurement snapshot process is the same as that in the foregoing embodiment, and is not described again here.
Embodiment 6, the method for snapshot of speed measurement at intersection further includes:
when the second vehicle is not detected by the preset bits with low priority, cruising is carried out on all the preset bits according to the sequence of the priority, if the moving vehicle is detected, the cruising is stopped, the detected vehicle is used as the second vehicle, and continuous tracking and video recording are started;
and (3) measuring the speed of the second vehicle, comparing the measured speed with the speed limit value of the corresponding branch, if the speed limit value of the corresponding branch is exceeded, taking a snapshot, and uploading the video and the snapshot violation pictures to be stored as violation records.
In this embodiment, cruising is performed on all preset positions, cruising is performed according to the priority of the preset positions, and after a moving vehicle is found in cruising, the speed measuring snapshot process is the same as that of the previous embodiment, and is not described again.
Embodiment 7, the method for snapshot of speed measurement at intersection further includes:
recording a branch which is blown away by a first vehicle, cruising all preset positions according to the sequence of priority when a second vehicle is not detected by the preset position with low priority, putting the preset position corresponding to the branch which is blown away by the first vehicle at the end during cruising, stopping cruising if a moving vehicle is detected, continuously tracking and starting to record a video by taking the detected vehicle as the second vehicle;
and (3) measuring the speed of the second vehicle, comparing the measured speed with the speed limit value of the corresponding branch, if the speed limit value of the corresponding branch is exceeded, taking a snapshot, and uploading the video and the snapshot violation pictures to be stored as violation records.
This embodiment cruises all preset positions, cruises according to the priority of preset position, puts the preset position that the branch road that first vehicle went away from during cruiser at the end, cruises to discover moving vehicle after, and the process of taking a candid photograph of testing the speed is the same with preceding said embodiment, records the branch road that first vehicle went away from, and it is no longer repeated here.
In an embodiment, this application still provides a snapshot device tests speed of intersection for the intersection tests speed and breaks rules and regulations and take a candid photograph, preset distance department sets up induction system on every branch road of intersection, induction system passes through the direction response back according to the vehicle, and the output corresponds the sensing signal, sets up at the center of intersection the snapshot device tests speed, the snapshot device tests speed has preset, and preset has corresponding relation with snapshot device turned angle, branch road and induction system sensing signal that tests speed, the snapshot device tests speed, including treater and the nonvolatile memory that has a plurality of computer instructions, the computer instruction realizes the step of the above-mentioned snapshot method that tests speed of intersection when being carried out by the treater.
The specific definition of the speed measurement snapshot device for the intersection can be referred to the definition of the speed measurement snapshot method for the intersection, and is not described herein again. The speed measuring snapshot device at the intersection can be embedded in a hardware form or independent of a processor in computer equipment, and can also be stored in a memory in the computer equipment in a software form, so that the processor can call and execute the corresponding operation of each module.
The memory and the processor are electrically connected, directly or indirectly, to enable transmission or interaction of data. For example, the components may be electrically connected to each other via one or more communication buses or signal lines. The memory stores a computer program that can be executed on the processor, and the processor executes the computer program stored in the memory, thereby implementing the network topology layout method in the embodiment of the present invention.
The Memory may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like. The memory is used for storing programs, and the processor executes the programs after receiving the execution instructions.
The processor may be an integrated circuit chip having data processing capabilities. The Processor may be a general-purpose Processor including a Central Processing Unit (CPU), a Network Processor (NP), and the like. The various methods, steps and logic blocks disclosed in embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. The utility model provides a method of taking a candid photograph that tests speed of intersection for the intersection tests speed and breaks rules and regulations and take a candid photograph, a serial communication port, every branch road of intersection predetermines distance department on and sets up induction system, induction system is after sensing the vehicle and get into the intersection, and the output corresponds the sensing signal, sets up the device of taking a candid photograph that tests speed at the center of intersection, the device of taking a candid photograph of testing speed presets the presetting bit, and the presetting bit has corresponding relation with the device turned angle of taking a candid photograph, branch road and its induction system sensing signal that tests speed, the method of taking a candid photograph that tests speed of intersection, includes:
after receiving the sensing signal output by the sensing device, the speed measuring snapshot device turns to a corresponding preset position, continuously tracks and starts to record a video after detecting the position of the vehicle;
carrying out speed measurement on the vehicle, comparing the measured speed with the speed limit value of the corresponding branch, if the speed limit value of the corresponding branch is exceeded, carrying out snapshot, and uploading and storing the video and the snapshot violation pictures as violation records;
when the speed measuring snapshot device tracks the first vehicle, after the sensing signal output by the sensing device is received again, if the first vehicle is not detected to be overspeed yet, the first vehicle is continuously tracked until the first vehicle passes through the center of the intersection, and then the first vehicle turns to the preset position corresponding to the sensing signal just received; if the first vehicle is detected to be overspeed, uploading and storing the video and the captured violation pictures as violation records, and turning to a preset position corresponding to the induction signal just received;
continuously tracking and starting video recording after the second vehicle position is detected by the new preset position;
and (3) measuring the speed of the second vehicle, comparing the measured speed with the speed limit value of the corresponding branch, if the speed limit value of the corresponding branch is exceeded, taking a snapshot, and uploading the video and the snapshot violation pictures to be stored as violation records.
2. The intersection speed measurement snapshot method according to claim 1, further comprising:
continuously tracking the vehicle, and updating the current corresponding preset position and the speed limit value of the corresponding branch according to the rotation angle of the speed measuring snapshot device;
and (3) measuring the speed of the vehicle, comparing the measured speed with the speed limit value of the current corresponding branch, if the speed limit value of the current corresponding branch is exceeded, taking a snapshot, and uploading and storing the video and the snapshot violation pictures as violation records.
3. The intersection speed measurement snapshot method according to claim 1, further comprising:
the preset positions corresponding to different branches of the intersection are set with priorities, and when a plurality of induction signals output by the induction devices are received within a preset time interval, the preset positions with high priorities are selected preferentially to carry out speed measurement snapshot.
4. The intersection speed measurement snapshot method according to claim 3, further comprising:
when the speed measuring snapshot device tracks the first vehicle, if the first vehicle is not detected to be overspeed at the moment, the first vehicle is continuously tracked until the first vehicle passes through the center of the intersection, and then the first vehicle turns to a preset position with low priority; if the first vehicle is detected to be overspeed, uploading and storing the video and the captured violation pictures as violation records, and turning to a preset position with low priority;
continuously tracking and starting video recording after a second vehicle position is detected at a preset position with low priority;
and (3) measuring the speed of the second vehicle, comparing the measured speed with the speed limit value of the corresponding branch, if the speed limit value of the corresponding branch is exceeded, taking a snapshot, and uploading the video and the snapshot violation pictures to be stored as violation records.
5. The intersection speed measurement snapshot method according to claim 4, further comprising:
when the second vehicle is not detected by the preset position with low priority, all the preset positions are subjected to cruising, if a moving vehicle is detected, the cruising is stopped, the detected vehicle is used as the second vehicle, and the tracking is continuously carried out and the video recording is started;
and (3) measuring the speed of the second vehicle, comparing the measured speed with the speed limit value of the corresponding branch, if the speed limit value of the corresponding branch is exceeded, taking a snapshot, and uploading the video and the snapshot violation pictures to be stored as violation records.
6. The intersection speed measurement snapshot method according to claim 5, wherein the cruising all preset bits comprises:
and cruising all preset bits according to the priority order.
7. The intersection speed measurement snapshot method according to claim 6, further comprising:
recording a branch which is blown away by a first vehicle, cruising all preset positions according to the sequence of priority when a second vehicle is not detected by the preset position with low priority, putting the preset position corresponding to the branch which is blown away by the first vehicle at the end during cruising, stopping cruising if a moving vehicle is detected, continuously tracking and starting to record a video by taking the detected vehicle as the second vehicle;
and (3) measuring the speed of the second vehicle, comparing the measured speed with the speed limit value of the corresponding branch, if the speed limit value of the corresponding branch is exceeded, taking a snapshot, and uploading the video and the snapshot violation pictures to be stored as violation records.
8. A speed measurement snapshot device of an intersection, which is used for speed measurement violation snapshot at the intersection, and is characterized by comprising a processor and a nonvolatile memory, wherein a plurality of computer instructions are stored in the nonvolatile memory, and when the computer instructions are executed by the processor, the steps of the method in any one of claims 1 to 7 are realized.
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