CN116164984A - Road test device and test method for speed limit sign auxiliary system - Google Patents
Road test device and test method for speed limit sign auxiliary system Download PDFInfo
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- CN116164984A CN116164984A CN202310201792.8A CN202310201792A CN116164984A CN 116164984 A CN116164984 A CN 116164984A CN 202310201792 A CN202310201792 A CN 202310201792A CN 116164984 A CN116164984 A CN 116164984A
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- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The invention discloses a road test device and a road test method for a speed-limiting sign auxiliary system, wherein a data acquisition device is used for recording speed-limiting signs and environment information in front of a vehicle in real time, and the speed of the vehicle to be tested is compared with the standard speed of the speed-limiting signs when the vehicle to be tested passes through the different speed-limiting signs at a certain speed through the working conditions with different preset duty ratios, so as to judge whether the vehicle is in overspeed running; if the vehicle is in overspeed running, judging whether the TSR system sends out a TSR early warning CAN signal or not, further carrying out analysis, processing and comparison by combining data actually collected by the data acquisition device, and recording the false alarm and missing report times of the TSR system of the tested vehicle.
Description
Technical Field
The invention belongs to the technical field of intelligent auxiliary driving systems of automobiles, and relates to a road test device and a road test method for a speed limit sign auxiliary system.
Background
When the automobile runs on a road, the speed of the automobile is too high possibly caused by the negligence of the driver, the road traffic rule is violated, and if no reminding measures are provided, some losses are likely to be caused to the driver and the automobile. The speed limit sign auxiliary system (TSR) is a system for automatically acquiring speed limit information to be observed under the current condition of a vehicle and monitoring the running speed of the vehicle in real time, and sending warning information timely when the running speed of the vehicle does not accord with or is about to exceed the speed limit range, and the system can send visual alarm to a meter or a large screen to remind a driver of paying attention to safety, so that traffic accidents are reduced. The function is simple in use scene, the speed limiting signboard which is about to appear in front is detected and identified, and a corresponding alarm prompt is given, but the stability of the system is verified through repeated experiments. At present, the system stability test in the industry is generally converted into a false alarm and missing alarm test of the system in the road driving process.
Because the system stability test needs to monitor various speed limit identification plates which are about to appear in front of the vehicle and the speed parameter of the vehicle in real time, records the system alarm condition in real time and has higher test frequency, how to rapidly verify the stability of the speed limit identification auxiliary system through special test equipment, improves the test efficiency and brings great challenges to test engineers.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the road test device and the test method for the speed-limiting sign auxiliary system, which are arranged on a test vehicle, so that the stability of a TSR system can be evaluated through the test device and the test method, and the test efficiency is improved.
The invention is realized by the following technical scheme:
a road test method for a speed limit sign auxiliary system comprises the following steps,
through preset working conditions with different duty ratios, when the tested vehicle uniformly passes through different speed limiting signboards, judging whether the vehicle is in overspeed running or not; if the vehicle is overspeed, judging whether the speed limit sign auxiliary system sends out a TSR early warning CAN signal, further analyzing, processing and comparing the actually collected data, and recording the false alarm and missing report times of the detected vehicle speed limit sign auxiliary system.
Preferably, the false alarm rate of the auxiliary system for judging the speed limit sign is specifically as follows:
when the vehicle is in overspeed running, if the speed limit sign auxiliary system does not send a TSR early warning CAN signal, the collected image data and environmental information CAN be used for analyzing whether the speed limit sign board is shielded or damaged;
if the speed-limiting signboard is shielded or damaged, the speed-limiting signboard auxiliary system alarms normally, otherwise, the speed-limiting signboard can be judged to be in missing report;
when the vehicle is in overspeed running, if the speed limit sign auxiliary system sends out a TSR early warning CAN signal, analysis, processing and comparison CAN be carried out through collected image data and image data of a shooting instrument or a large-screen camera, if the two pieces of information are consistent, the speed limit sign auxiliary system alarms normally, and otherwise, false alarm is judged.
Preferably, the working conditions comprise urban working conditions, suburban working conditions, overhead working conditions and high-speed working conditions, wherein the ratio of the mileage of each working condition to the total mileage is 30%, 20% and 30%, and the total mileage is not less than 200km.
Preferably, the false alarm rate of the speed limit sign auxiliary system is measured through false alarm and missing alarm times of hundred kilometers; the false alarm and missing report rate of the speed limit sign auxiliary system is as follows:
(false alarm times and missing alarm times)/total identification times are less than or equal to 2 percent.
A road test device of a speed limit sign auxiliary system comprises,
the system comprises a data acquisition device, a display device and a TSR evaluation system;
the data acquisition device is used for recording speed limit signboards and environment information in front of the vehicle and visual prompt information sent by a vehicle instrument or a large screen in real time; the TSR evaluation system is used for acquiring data information of the data acquisition device and vehicle CAN bus related information in real time, and storing, managing and analyzing the acquired data; the display device is used for displaying the current data acquisition and analysis results of the TSR evaluation system in real time so as to be convenient for a test engineer to check at any time.
Preferably, the TSR evaluation system further has an event recording function, the event recording function CAN automatically record data in a certain time before and after an event by self-defining setting through a TSR early warning CAN signal sent by the speed limit sign auxiliary system as a trigger condition, so that event data CAN be conveniently and rapidly searched.
Preferably, the TSR evaluation system further has data playback and data interception functions.
Preferably, the TSR evaluation system comprises a data acquisition module, a data storage module, a data management module, a data analysis processing module and a data statistics module.
Preferably, the data acquisition device adopts a high-definition camera; the high-definition camera is installed in a front windshield of an automobile.
Preferably, the display device adopts a vehicle-mounted display screen, and the TSR evaluation system is integrated on the intelligent driving module of the vehicle.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a road test device and a road test method for a speed-limiting sign auxiliary system, wherein a data acquisition device is used for recording speed-limiting signs and environment information in front of a vehicle in real time, working conditions with different duty ratios are preset, when a vehicle to be tested passes through different speed-limiting signs at a certain speed, whether the vehicle is in overspeed running or not is judged by comparing the speed of the vehicle to be tested with the standard speed of the speed-limiting signs, and all vehicles are in normal running if the vehicle is not in overspeed running; if the vehicle is in overspeed running, judging whether the speed limit identification auxiliary system sends a TSR early warning CAN signal or not, further carrying out analysis, processing and comparison by combining data actually collected by the data acquisition device, and recording the false alarm and missing alarm times of the speed limit identification auxiliary system of the tested vehicle, otherwise, the vehicle is in normal running. The device of the invention can timely send out the warning information system when the running speed of the vehicle does not accord with or is about to exceed the speed limit range, and the system can remind the driver to pay attention to safety by sending visual alarm to the instrument or the large screen, thereby reducing traffic accidents.
Furthermore, the high-definition camera can detect the upcoming speed-limiting signboard in front, can identify the speed-limiting value represented by the signboard, and can evaluate the stability of the speed-limiting identification auxiliary system through the device and the test method thereof.
Drawings
Road test device of speed limit sign auxiliary system of figure 1
FIG. 2 is a schematic diagram of the analysis and processing logic of the TSR evaluation system.
Detailed Description
The invention will now be described in further detail with reference to specific examples, which are intended to illustrate, but not to limit, the invention.
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
The speed limit sign auxiliary system (TSR) is a system for automatically acquiring speed limit information to be observed under the current condition of a vehicle and monitoring the running speed of the vehicle in real time, and sending warning information timely when the running speed of the vehicle does not accord with or is about to exceed the speed limit range, and the system can send visual alarm to a meter or a large screen to remind a driver of paying attention to safety, so that traffic accidents are reduced.
The TSR evaluation system is based on a detection system integrated on the intelligent driving module of the vehicle and used for performing an evaluation test on a speed limit sign auxiliary system (TSR);
the invention provides a road test device and a road test method for a speed limit sign auxiliary system, which concretely relate to the following steps: 1. test device
The blind area monitoring system road test device is shown in fig. 1, and the device mainly comprises: high definition digtal camera, TSR evaluation system and on-vehicle display screen. The detailed description is as follows:
1) High definition camera
The high-definition camera records the speed-limiting signboard and the environmental information in front of the vehicle in real time. The camera is capable of detecting the upcoming speed limit signboard in front and identifying the speed limit value shown by the signboard, such as 30, 40, 60, 80 and the like.
Meanwhile, the high-definition camera needs to detect whether visual prompt information is sent out in an instrument or a large screen in the vehicle cabin in real time and record the sent visual prompt information.
2) TSR evaluation system
The TSR evaluation system is used for recording the high-definition camera information and the vehicle CAN bus related information in real time, storing, managing and analyzing the recorded data and comprises a data acquisition module, a data storage module, a data management module, a data analysis processing module and a data statistics module. Meanwhile, the system has the functions of data playback and data interception.
The system has an event recording function, and the event recording CAN take a TSR early warning CAN signal sent by the speed limit sign auxiliary system as a trigger condition. The event recording function can be used for automatically recording data in a certain time before and after an event in a self-defined mode so as to conveniently and quickly search event data.
When a vehicle to be tested runs over the speed-limiting signboard, if the speed-limiting signboard auxiliary system does not send out a TSR early warning CAN signal, the image data and the environmental information acquired by a camera in front of the vehicle CAN be shot, whether the condition that the signboard is shielded or damaged or not is analyzed is taken as a basis, if so, the system alarms normally, otherwise, the system CAN be judged to be in missing report; if the speed limit sign auxiliary system sends out a TSR early warning CAN signal, analyzing, processing and comparing the acquired image data of the shooting front camera with the image data of the shooting instrument or the large-screen camera, and if the two pieces of information are consistent, judging that the speed limit sign auxiliary system alarms normally, otherwise, judging that the speed limit sign auxiliary system is false; the data analysis processing logic may refer to fig. 2. The function can automatically record the false alarm and missing alarm times of the auxiliary system of the speed limit sign of the tested vehicle in the road test process.
3) Vehicle-mounted display screen
The vehicle-mounted display screen is used for displaying the shot images of the cameras, CAN bus information, the early warning times of the current TSR system, the false alarm times, the missing report times and the like which are concerned in the test process of the test engineer, and is convenient for the test engineer to check at any time.
The system comprises a data acquisition device, a display device and a TSR evaluation system;
the data acquisition device is used for recording speed limit signboards and environment information in front of the vehicle and visual prompt information sent by a vehicle instrument or a large screen in real time; the TSR evaluation system is used for acquiring data information of the data acquisition device and vehicle CAN bus related information in real time, and storing, managing and analyzing the acquired data; the display device is used for displaying the current data acquisition and analysis results of the TSR evaluation system in real time so as to be convenient for a test engineer to check at any time.
The TSR evaluation system also has an event recording function, and the event recording function CAN automatically record data in a certain time before and after an event by self-defining setting through taking a TSR early warning CAN signal sent by the speed limit sign auxiliary system as a trigger condition so as to conveniently and rapidly search event data.
The TSR evaluation system also has the functions of data playback and data interception.
The TSR evaluation system comprises a data acquisition module, a data storage module, a data management module, a data analysis processing module and a data statistics module. The data acquisition module acquires the speed limit signboard and the environment information in front of the vehicle and the visual prompt information data sent by the vehicle instrument or the large screen, which are acquired by the high-definition camera, the data storage module is used for storing the data acquired by the data acquisition module, the data management module is used for carrying out induction, arrangement and classification on the acquired information data, the data analysis and processing module is used for carrying out the information analysis and processing on the acquired information data,
the road test device of the speed limit identification auxiliary system is arranged on a test vehicle, and the data acquisition device adopts a high-definition camera; the high-definition camera is installed in a front windshield of an automobile, the display device adopts a vehicle-mounted display screen, and the TSR evaluation system is integrated on the intelligent driving module of the automobile.
2. Test method
The speed limit sign assists the road test of the system, and aims to verify the false alarm rate and the missing report rate of the TSR system. The test method is described in detail as follows:
the road test method mainly comprises 4 working conditions of urban working conditions, suburban working conditions, overhead working conditions and high-speed working conditions, wherein the ratio of the mileage of each working condition to the total mileage is 30%, 20% and 30%, and the total mileage is not less than 200km. Wherein, each working condition needs to contain various speed-limiting signboards. The speed limiting signboard with typical red circles, white background and black characters is required to be contained in each working condition; different speed limiting values are arranged on the speed limiting signboard, and the speed limiting values comprise 30km/h, 40km/h, 60km/h or 80km/h.
According to the road test method, the false alarm rate of the speed limit sign auxiliary system is balanced through the false alarm of hundred kilometers and the number of false alarm missing times. The invention recommends false alarm rate and missing report rate of the speed limit sign auxiliary system: (false alarm times and missing alarm times)/total identification times are less than or equal to 2 percent.
A road test method for a speed limit sign auxiliary system comprises the following steps,
the method comprises the steps of presetting 4 working conditions of different duty ratios, namely a total driving mileage of 300km, a city working condition, a suburb working condition, an overhead working condition and a high-speed working condition, wherein the duty ratio of the driving mileage of each working condition in the total driving mileage is 30%, 20% and 30%, when a tested vehicle passes through different speed limit signboards at a certain speed, judging whether the vehicle is in overspeed running or not by comparing the speed of the tested vehicle with the standard speed of the speed limit signboards, and if the vehicle is not in overspeed running, all the vehicles normally run;
if the vehicle is in overspeed running, judging whether the speed limit sign auxiliary system sends out a TSR early warning CAN signal, further carrying out analysis, processing and comparison by combining data actually acquired by the data acquisition device, and recording the false alarm and missing report times of the detected vehicle speed limit sign auxiliary system, otherwise, the vehicle is in normal running;
the false alarm rate of the auxiliary system for judging the speed limit sign is specifically as follows:
comparing the speed of the detected vehicle with the standard speed of the speed-limiting signboard, and if the TSR system does not send out a TSR early warning CAN signal when the vehicle is in overspeed driving, further analyzing whether the speed-limiting signboard is shielded or damaged according to the image data and the environment information actually acquired by the data acquisition device;
if the speed-limiting signboard is shielded or damaged, the speed-limiting signboard auxiliary system does not alarm, the speed-limiting signboard is indicated to alarm normally, and if the speed-limiting signboard is shielded or damaged, the speed-limiting signboard auxiliary system does not alarm, the speed-limiting signboard auxiliary system alarms abnormally, and the alarm can be judged to be missed;
by comparing the speed of the detected vehicle with the standard speed of the speed-limiting signboard, if the speed-limiting sign auxiliary system sends out TSR early warning CAN signals when the vehicle is in overspeed driving, the actual image data acquired by the data acquisition device and the image data of the shooting instrument or the large-screen camera CAN be analyzed, processed and compared to judge whether the information of the speed-limiting values extracted by the analysis of the actual image data and the image data of the shooting instrument or the large-screen camera is consistent,
if the two pieces of information are consistent, the overspeed running of the vehicle is confirmed, and the TSR early warning signal is sent out by the speed limit sign auxiliary system, so that the speed limit sign auxiliary system alarms normally;
if the two pieces of information are inconsistent, the vehicle does not run at overspeed, and the speed limit sign auxiliary system sends out a TSR early warning signal, the speed limit sign auxiliary system alarms out of order, and the vehicle is judged to be in false report;
therefore, in the road test process, the false alarm and missing alarm times of the detected vehicle speed limit sign auxiliary system are recorded. The method can rapidly verify the stability of the speed-limiting identification auxiliary system, improves the test efficiency, is beneficial to the standardized work of the test of the propulsion automobile, and has positive help effect on improving the performance of the automatic driving automobile. The device of the invention can timely send out the warning information system when the running speed of the vehicle does not accord with or is about to exceed the speed limit range, and the system can remind the driver to pay attention to safety by sending visual alarm to the instrument or the large screen, thereby reducing traffic accidents.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention in any way; those skilled in the art will readily appreciate that the present invention may be implemented as shown in the drawings and described above; however, those skilled in the art will appreciate that many modifications, adaptations, and variations of the present invention are possible in light of the above teachings without departing from the scope of the invention; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present invention still fall within the scope of the present invention.
Claims (10)
1. A road test method of a speed limit sign auxiliary system is characterized by comprising the following steps of,
through preset working conditions with different duty ratios, when the tested vehicle uniformly passes through different speed limiting signboards, judging whether the vehicle is in overspeed running or not; if the vehicle is overspeed, judging whether the speed limit sign auxiliary system sends out a TSR early warning CAN signal, further analyzing, processing and comparing the actually collected data, and recording the false alarm and missing report times of the detected vehicle speed limit sign auxiliary system.
2. The road test method of the speed limit sign auxiliary system according to claim 1, wherein the misinformation rate of the TSR system is determined specifically as follows:
when the vehicle is in overspeed running, if the speed limit sign auxiliary system does not send a TSR early warning CAN signal, the collected image data and environmental information CAN be used for analyzing whether the speed limit sign board is shielded or damaged;
if the speed-limiting signboard is shielded or damaged, the speed-limiting signboard auxiliary system alarms normally, otherwise, the speed-limiting signboard can be judged to be in missing report;
when the vehicle is in overspeed running, if the speed limit sign auxiliary system sends out a TSR early warning CAN signal, analysis, processing and comparison CAN be carried out through collected image data and image data of a shooting instrument or a large-screen camera, if the two pieces of information are consistent, the speed limit sign auxiliary system alarms normally, and otherwise, false alarm is judged.
3. The road test method of a speed limit sign auxiliary system according to claim 1, wherein the working conditions comprise urban working conditions, suburban working conditions, overhead working conditions and high-speed working conditions, wherein the ratio of mileage of each working condition to total mileage is 30%, 20% and 30%, respectively, and the total mileage is not less than 200km.
4. The road test method of speed limit sign auxiliary system according to claim 1, wherein the false alarm rate of the speed limit sign auxiliary system is measured by the false alarm and missing report times of hundred kilometers; the false alarm and missing report rate of the speed limit sign auxiliary system is as follows:
(false alarm times and missing alarm times)/total identification times are less than or equal to 2 percent.
5. A road test device for a speed limit sign auxiliary system based on the test method as set forth in any one of claims 1 to 4, comprising,
the system comprises a data acquisition device, a display device and a TSR evaluation system;
the data acquisition device is used for recording speed limit signboards and environment information in front of the vehicle and visual prompt information sent by a vehicle instrument or a large screen in real time; the TSR evaluation system is used for acquiring data information of the data acquisition device and vehicle CAN bus related information in real time, and storing, managing and analyzing the acquired data; the display device is used for displaying the current data acquisition and analysis results of the TSR evaluation system in real time so as to be convenient for a test engineer to check at any time.
6. The road test device for the speed limit sign auxiliary system according to claim 5, wherein the TSR evaluation system further has an event recording function, the event recording function CAN automatically record data within a certain time before and after an event by using a TSR early warning CAN signal sent by the speed limit sign auxiliary system as a trigger condition, and the event recording function CAN be self-defined so as to quickly search event data.
7. The road test device for the speed limit sign auxiliary system according to claim 5, wherein the TSR evaluation system further has data playback and data interception functions.
8. The road test device for the speed limit sign auxiliary system according to claim 5, wherein the TSR evaluation system comprises a data acquisition module, a data storage module, a data management module, a data analysis processing module and a data statistics module.
9. The road test device for the speed limit sign auxiliary system according to claim 5, wherein the data acquisition device adopts a high-definition camera; the high-definition camera is installed in a front windshield of an automobile.
10. The road test device for the speed limit sign auxiliary system according to claim 5, wherein the display device adopts a vehicle-mounted display screen, and the TSR evaluation system is integrated on a vehicle intelligent driving module.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116881778A (en) * | 2023-09-06 | 2023-10-13 | 交通运输部公路科学研究所 | Intelligent auxiliary teaching system safety early warning and protection function testing system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116881778A (en) * | 2023-09-06 | 2023-10-13 | 交通运输部公路科学研究所 | Intelligent auxiliary teaching system safety early warning and protection function testing system and method |
| CN116881778B (en) * | 2023-09-06 | 2023-11-28 | 交通运输部公路科学研究所 | Intelligent auxiliary teaching system safety early warning and protection function testing system and method |
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