CN115290340A - Test system and method for positioning forward traffic passing prompt function - Google Patents
Test system and method for positioning forward traffic passing prompt function Download PDFInfo
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Abstract
The invention discloses a test system and a method for positioning a forward traffic passing prompt function, belonging to the technical field of automobile electrical test, and comprising a vehicle-mounted power supply device, a GPS/RTK antenna, a vehicle-vehicle communication antenna, a slave vehicle signal acquisition module, a CAN signal conversion and acquisition module, a vehicle CAN box and an upper computer; the tester CAN obtain the CAN data of the vehicle controller and the position and motion attitude data of the front passing vehicle and the self vehicle in real time through the system, and the concerned data CAN be synchronously displayed in real time and stored in an upper computer. Compared with a test verification scheme of virtual simulation, the system and the method can avoid the deviation from an actual scene test caused by model idealization, meet the requirement of test testers on the verification and evaluation of the forward traffic passing prompt function under the real environment, complement the virtual simulation test, complete the forward traffic passing prompt function and performance test under the real environment, enable the test verification process to be more sufficient, and further improve the test quality.
Description
Technical Field
The invention belongs to the technical field of automobile electrical testing, and particularly relates to a testing system and method for a positioning forward traffic passing prompt function.
Background
With the development of the technology of the automobile industry, the arrangement of the intelligent networking equipment becomes a competitive direction for various automobile manufacturers, and automobile consumers tend to pay attention to the intelligent networking equipment when selecting automobiles. Among them, a front traffic passing alert function (front traffic alert) is gradually mounted in mass-produced vehicles as an ADAS configuration newly added in recent years. Due to the increase of complexity, such new functions also make automobile electrical function testers face brand new challenges of test verification. At present, the verification of the forward traffic passing prompt function is mostly tested and evaluated by adopting a virtual simulation verification method, although the test method can realize the building of a test scene and the automatic execution of a sequence in a virtual simulation mode. However, because the simulation model has the characteristics of abstraction and idealization, the test result cannot completely represent the functional performance in the real external environment.
Compared with the existing mode that the reversing early warning performance cannot be tested, the method comprises the steps of obtaining a current test identifier of a vehicle to be tested, determining a current reversing test item according to the current test identifier, controlling the vehicle to be tested to execute the current reversing test item, obtaining vehicle alarm information of the vehicle to be tested in the current reversing test item executing process, judging whether the vehicle to be tested is in a preset alarm state or not according to the vehicle alarm information, obtaining the current test information when the vehicle to be tested is in the preset alarm state, and generating a reversing early warning performance test result of the vehicle to be tested according to the current test information.
The prior art discloses a car backing early warning system, includes: the automobile backing early warning system further comprises a detection distance receiving device, an alarm processor and a warning device, wherein the detection distance receiving device is used for receiving the detection distance sent by the radar detector, and the warning processor is used for sending a warning sound instruction to the warning horn when the detection distance exceeds a preset distance, and the radar detector and the warning horn are respectively electrically connected with the alarm processor. The automobile reversing early warning system can detect the vertical height of the automobile reversing rear part, when the automobile is backed, a pit, a cliff or a pond is arranged at the rear part, the distance detected by the radar detector exceeds the preset distance, the alarm processor sends an alarm sound instruction to the alarm horn, the alarm horn sends an alarm sound, a driver can emergently brake and check the condition, the automobile can be prevented from falling into the pit, the cliff or the pond when reversing, the vertical direction early warning is provided, and the practicability of the automobile reversing early warning system is improved
The prior art also discloses an early warning system and a method for preventing students from colliding with a coming school bus after passing from the front of the school bus, the number of rear vehicles, the speed of the rear vehicles and the relative distance between the rear vehicles and the school bus are obtained in real time through a millimeter wave radar for the school bus, the position information of the school bus is obtained in real time through a GPS module for the school bus, the position information of the students is obtained through a child intelligent watch GPS module, whether the students pass from the front of the stopped school bus or not is judged according to the collected information, when the students pass from the front of the school bus, whether the rear vehicles on the left equidirectional road form potential threats or not is judged, if the potential threats are formed, an information processor sends early warning information to a display screen and an alarm, and timely sends warning to a driver of the rear vehicle through the display screen and the alarm, and sends danger information to a manager of the school bus.
The conventional real vehicle testing method has a series of problems of insufficient testing data precision, inconsistent testing data formats, low data storage convenience and the like, and based on the current situation, a real vehicle high-precision positioning-based forward traffic passing prompt testing system and method are urgently needed to be developed.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a test system and a test method for positioning a forward traffic passing prompt function, a tester CAN obtain CAN data of a vehicle controller and position and motion attitude data of a forward passing vehicle and a self vehicle in real time through the system, and the concerned data CAN be synchronously displayed in real time and stored in an upper computer. Compared with a test verification scheme of virtual simulation, the system and the method can avoid the deviation from an actual scene test caused by model idealization, meet the requirement of test testers on the verification and evaluation of the forward traffic passing prompt function under the real environment, complement the virtual simulation test, complete the forward traffic passing prompt function and performance test under the real environment, enable the test verification process to be more sufficient, and further improve the test quality.
The invention is realized by the following technical scheme:
in a first aspect, the invention provides a test system for positioning a forward traffic passing prompt function, which comprises a GPS/RTK antenna, a vehicle-vehicle communication antenna, a secondary vehicle signal acquisition module, a CAN signal conversion and acquisition module, a vehicle CAN box and an upper computer, wherein the GPS/RTK antenna is respectively in communication connection with the CAN signal conversion and acquisition module and the secondary vehicle signal acquisition module, the secondary vehicle signal acquisition module sends acquired information to the CAN signal conversion and acquisition module through the vehicle-vehicle communication antenna, the CAN signal conversion and acquisition module uploads the information of a detected vehicle and a target vehicle to the upper computer through a CAN signal, and the upper computer respectively receives the position data of the detected vehicle and the target vehicle processed by the CAN signal conversion and acquisition module and the CAN signal of a controller of the detected vehicle, synchronously stores the position data and the CAN signal of the controller of the detected vehicle, and displays the position data and the CAN signal through a display.
Furthermore, the CAN signal conversion and acquisition module converts the information of the detected vehicle and the target vehicle into 500kb CAN signals and uploads the CAN signals to the upper computer.
Furthermore, the test system also comprises vehicle-mounted power supply equipment, and the vehicle-mounted power supply equipment is used for supplying power to the whole test system and the tested vehicle.
Further, the GPS/RTK antenna comprises a GPS/RTK antenna and a GPS/RTK antenna, wherein the GPS/RTK antenna is respectively positioned at the front end of the vehicle to be detected and the front end of the target vehicle, and the GPS/RTK antenna is positioned at the rear end.
On the other hand, the invention also provides a test method for the function of prompting the traffic passing ahead in positioning, which specifically comprises the following steps:
the method comprises the following steps: testing system equipment hardware connection;
step two: calibrating collision reference points of a detected vehicle and a target vehicle;
step three: setting a test case, wherein the test case consists of external environment conditions and a vehicle motion state, matching vehicle motion state elements with the external environment state elements, generating specific test items one by one, and summarizing the test items to generate the test case;
step four: after the test cases are generated, the test cases are executed one by one, and in the test execution process, the vehicle controller CAN signals of all the test cases and the position information derived by the positioning equipment are obtained;
step five: after the test is finished, corresponding data recorded by the upper computer are sorted, and are analyzed with the test data one by one according to system function design indexes and performance requirements, so that real vehicle test verification of the front traffic passing prompt function is finished.
Further, the calibration of the collision reference point in the step two is specifically as follows:
the collision reference point of the detected vehicle is the right middle position in front of the vehicle, and the collision reference point of the target vehicle is the outer side of a headlamp closest to the detected vehicle in the advancing direction.
Further, the external environmental conditions in the third step include a target vehicle speed, a target vehicle starting direction, a target vehicle posture and a target vehicle type; the target vehicle speed is set to be 5km/h, 10km/h, 15km/h, 20km/h and 25km/h; the starting direction of the target vehicle is set to be 45 degrees on the right side, 90 degrees on the right side, 135 degrees on the right side, 45 degrees on the left side, 90 degrees on the left side and 135 degrees on the left side; the target vehicle posture comprises completely passing through the front of the vehicle, driving to the front of the vehicle and stopping; the target vehicle types include motor vehicles and motorcycles.
Further, the vehicle motion state in step three includes a vehicle gear state and a vehicle speed; the vehicle gear states comprise different D/N/M/S gear states; the vehicle speed is set to be 0km/h, 5km/h and 10km/h.
Further, the CAN signal in the fourth step comprises a vehicle speed, a gear and an FCTA working state signal of the tested vehicle; the position information derived by the positioning equipment comprises the transverse speed, the acceleration, the collision distance and TTC data of the target vehicle at the alarm moment of the detected vehicle.
Compared with the prior art, the invention has the following advantages:
the invention provides a test system and a method for positioning a forward traffic passing prompt function, which CAN obtain test data with complete forward traffic passing prompt function test and higher precision under a real road environment, and realize synchronous display and storage of positioning information and a Controller Area Network (CAN) signal of a self-controller; the high-precision test data not only comprises the real-time (transverse/longitudinal) distance, the (transverse/longitudinal) speed, the (transverse/longitudinal) acceleration and other information of the two vehicles; and the TTC information of the collision between the tested vehicle and the oncoming vehicle can be directly calculated, so that the workload of analyzing later-stage data of testers is reduced, and the efficiency of the function test is improved.
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In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of a test system for positioning a forward traffic passing prompt function according to embodiment 1 of the present invention;
fig. 2 is a schematic diagram of a forward traffic movement prompting function of the method for testing a positioning forward traffic movement prompting function according to embodiment 2 of the present invention;
fig. 3 is a schematic diagram of a test case configuration of a test method for a positioning forward traffic passing prompt function according to embodiment 2 of the present invention.
Detailed Description
For clearly and completely describing the technical scheme and the specific working process thereof, the specific implementation mode of the invention is as follows by combining the attached drawings of the specification:
in the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Example 1
As shown in fig. 1, the embodiment provides a test system for positioning a forward traffic passing prompt function, which includes a GPS/RTK antenna, a vehicle-to-vehicle communication antenna, a slave vehicle signal acquisition module, a CAN signal conversion and acquisition module, a vehicle CAN box and an upper computer;
in order to acquire high-precision positioning information between the test vehicle and a target vehicle passing in front, a GPS antenna matched with RTK difference is selected for realization; the vehicle-vehicle communication antenna transmits the slave vehicle data to the main vehicle, the position data of the main vehicle and the slave vehicle are uniformly converted into 500kb CAN signals through the data acquisition and processing module and transmitted to the vehicle CAN box, the CAN signals of the main vehicle controller and the vehicle CAN box are also transmitted to the vehicle CAN box, and the two kinds of information are finally transmitted to the upper computer together for synchronous display and storage. Finally, test data of a high-precision positioning forward traffic passing prompt function in a real vehicle scene are obtained;
the GPS/RTK antenna is in communication connection with the CAN signal conversion and acquisition module and the slave vehicle signal acquisition module respectively, the slave vehicle signal acquisition module sends acquired information to the CAN signal conversion and acquisition module through the vehicle-vehicle communication antenna, the CAN signal conversion and acquisition module uploads the information of the detected vehicle and the target vehicle to the upper computer through CAN signals, and the upper computer receives the position data of the detected vehicle and the target vehicle and the CAN signals of the controller of the detected vehicle which are processed by the CAN signal conversion and acquisition module respectively, and carries out synchronous storage and display through the display.
The test system further comprises vehicle-mounted power supply equipment, and the vehicle-mounted power supply equipment is used for supplying power to the whole test system and the tested vehicle.
The GPS/RTK antenna comprises a GPS/RTK antenna and a GPS/RTK antenna, wherein the GPS/RTK antenna is respectively positioned at the front end of the vehicle to be detected and the front end of the target vehicle, and the GPS/RTK antenna is positioned at the rear end.
Example 2
The embodiment provides a method for testing a function of prompting traffic passing ahead in positioning, which specifically comprises the following steps:
the method comprises the following steps: testing system equipment hardware connection;
the method comprises the following steps that a tested vehicle (namely a testing main vehicle) and a target vehicle (namely a testing auxiliary vehicle) are both provided with a GPS/RTK antenna module for carrying out, and a corresponding GPS portable base station is erected in a testing field for supporting; after the portable base station is started, the portable base station needs to wait for a period of time to search and lock the satellite; the main vehicle and the auxiliary vehicles are both provided with vehicle communication modules, the information of the auxiliary vehicles is gathered to the main vehicle through the antenna, the main vehicle is provided with a data acquisition and processing module for gathering the position data of the two vehicles, the position data is converted into a 500KB CAN signal and is transmitted to an upper computer, and the devices are powered by a vehicle-mounted power supply;
step two: calibrating collision reference points of a detected vehicle and a target vehicle;
in order to obtain accurate position information, such as TTC time of a collision point of two vehicles, firstly configuring a collision reference point of the two vehicles, wherein the collision reference point of the tested vehicle is a right middle position in the front of the vehicle, and the collision reference point of the target vehicle is the outer side of a headlamp closest to the tested vehicle in the advancing direction; taking a scene of 90-degree travel in front of the right side as an example, as shown in fig. 2, in order to make data accurate, collision points of two vehicles need to be aligned, the position distance between the two vehicles is adjusted to be zero by a system, and errors are artificially eliminated, so that the output information of the system is completely consistent with the actual information;
step three: setting a test case, wherein the test case consists of external environment conditions and a vehicle motion state, matching vehicle motion state elements with the external environment state elements, generating specific test items one by one, and summarizing the test items to generate the test case;
as shown in fig. 3, the external environmental conditions include a target vehicle speed, a target vehicle starting direction, a target vehicle attitude, and a target vehicle type; the target vehicle speed is set to be 5km/h, 10km/h, 15km/h, 20km/h and 25km/h; the starting direction of the target vehicle is set to be 45 degrees on the right side, 90 degrees on the right side, 135 degrees on the right side, 45 degrees on the left side, 90 degrees on the left side and 135 degrees on the left side; the target vehicle posture comprises completely passing through the front of the vehicle, driving to the front of the vehicle and stopping; the target vehicle types include motor vehicles and motorcycles; the tester obtains complete external environment state elements by matching the four variables;
the vehicle motion state comprises a vehicle gear state and a vehicle speed; the vehicle gear state comprises different gear states of D/N/M/S; the vehicle speed is set to be 0km/h, 5km/h and 10km/h; the tester obtains a complete vehicle motion state element by matching the two variables;
step four: after the test cases are generated, the test cases are executed one by one, and in the process of executing the test, the vehicle controller CAN signals of all the test cases and the position information derived by the positioning equipment are obtained;
the CAN signal comprises a vehicle speed, a gear and an FCTA working state signal of a tested vehicle; the position information derived by the positioning equipment comprises the transverse speed, the acceleration, the collision distance and TTC data of a target vehicle at the alarm moment of the detected vehicle;
step five: after the test is finished, corresponding data recorded by the upper computer are sorted, and are analyzed with the test data one by one according to system function design indexes and performance requirements, so that real vehicle test verification of the front traffic passing prompt function is finished.
Automobile testers can obtain real and accurate test data of the traffic passing function in front of the vehicle under the actual road environment. The testing quality is improved through the high-precision positioning equipment, so that the testing result is accurately fed back to the development end of the system, and the technical development capability and the product quality of a host factory are improved.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications all fall within the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (9)
1. The utility model provides a test system of prompt facility is walked to location place ahead traffic, its characterized in that, includes GPS RTK antenna, car communication antenna, follows car signal acquisition module, CAN signal conversion and collection module, car CAN box and host computer, GPS RTK antenna respectively with CAN signal conversion and collection module and follow car signal acquisition module communication connection, from car signal acquisition module through car communication antenna with the information transmission who gathers for CAN signal conversion and collection module, CAN signal conversion and collection module is uploaded to the host computer by the information of being surveyed vehicle and target vehicle through the CAN signal, the host computer receives respectively through CAN signal conversion and collection module processing after being surveyed vehicle and target vehicle's positional data, the CAN signal of being surveyed the controller of vehicle, carries out synchronous storage and shows through the display.
2. The system as claimed in claim 1, wherein the CAN signal conversion and collection module converts the information of the vehicle under test and the target vehicle into 500kb CAN signals and transmits them to the upper computer.
3. The system for testing the function of prompting traffic passing ahead at a fixed position according to claim 1, wherein the system further comprises a vehicle-mounted power supply device, and the vehicle-mounted power supply device is used for supplying power to the whole testing system and a vehicle to be tested.
4. The system as claimed in claim 1, wherein the GPS/RTK antenna comprises a GPS/RTK antenna located at a front end of the vehicle under test and a GPS/RTK antenna located at a rear end of the vehicle under test and the target vehicle, respectively.
5. The testing method of the testing system for positioning the function of prompting the traffic passing ahead of the vehicle as claimed in claim 1, specifically comprising the steps of:
the method comprises the following steps: testing system equipment hardware connection;
step two: calibrating collision reference points of a detected vehicle and a target vehicle;
step three: setting a test case, wherein the test case consists of external environment conditions and a vehicle motion state, matching vehicle motion state elements with the external environment state elements, generating specific test items one by one, and summarizing the test items to generate the test case;
step four: after the test cases are generated, the test cases are executed one by one, and in the process of executing the test, the vehicle controller CAN signals of all the test cases and the position information derived by the positioning equipment are obtained;
step five: after the test is finished, corresponding data recorded by the upper computer are sorted, and are analyzed with the test data one by one according to system function design indexes and performance requirements, so that real vehicle test verification of the front traffic passing prompt function is finished.
6. The method for testing the function of prompting traffic passing ahead in positioning as claimed in claim 5, wherein the calibration of the collision reference point in the step two is as follows:
the collision reference point of the detected vehicle is the right middle position in front of the vehicle, and the collision reference point of the target vehicle is the outer side of a headlamp closest to the detected vehicle in the advancing direction.
7. The method according to claim 5, wherein the external environmental conditions in step three include target vehicle speed, target vehicle starting direction, target vehicle attitude, and target vehicle type; the target vehicle speed is set to be 5km/h, 10km/h, 15km/h, 20km/h and 25km/h; the starting direction of the target vehicle is set to be 45 degrees on the right side, 90 degrees on the right side, 135 degrees on the right side, 45 degrees on the left side, 90 degrees on the left side and 135 degrees on the left side; the target vehicle posture completely passes through the front of the vehicle and runs to the front of the vehicle to stop; the target vehicle types include motor vehicles and motorcycles.
8. The method for testing the function of prompting traffic passing ahead at positioning according to claim 5, wherein the vehicle motion state in step three comprises a vehicle gear state and a vehicle speed; the vehicle gear state comprises different gear states of D/N/M/S; the vehicle speed is set to be 0km/h, 5km/h and 10km/h.
9. The method as claimed in claim 5, wherein the CAN signal in step four includes the vehicle speed, gear and FCTA status signals of the vehicle to be tested; the position information derived by the positioning equipment comprises the transverse speed, the acceleration, the collision distance and TTC data of the target vehicle at the alarm moment of the detected vehicle.
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