CN106885700B - Simulation test device and method for blind area detection equipment - Google Patents

Simulation test device and method for blind area detection equipment Download PDF

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Publication number
CN106885700B
CN106885700B CN201510933895.9A CN201510933895A CN106885700B CN 106885700 B CN106885700 B CN 106885700B CN 201510933895 A CN201510933895 A CN 201510933895A CN 106885700 B CN106885700 B CN 106885700B
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China
Prior art keywords
blind area
guide rail
simulation test
area detection
motor
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CN201510933895.9A
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CN106885700A (en
Inventor
覃开宇
王娜
熊志龙
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Wuhan Hangsheng Automobile Electronics Co ltd
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Shenzhen Hangsheng Electronic Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00Testing of vehicles
    • G01M17/007Wheeled or endless-tracked vehicles

Abstract

The invention discloses a simulation test device and a simulation test method of blind area detection equipment, wherein the simulation test device of the blind area detection equipment comprises a bracket, an A guide rail, a B guide rail, a reference object, a detection device, an A motor and a B motor; the detection device is characterized in that the A guide rail and the B guide rail are arranged in parallel, the support is fixedly arranged on the A guide rail, the reference object is arranged on the B guide rail, the detection device is fixedly arranged on the support, the visual field detection direction faces to the B guide rail, and the A motor and the B motor are respectively connected with the A guide rail and the B guide rail. The scheme can test the function of the blind area detection device in a laboratory so as to overcome various inconveniences of testing on a road.

Description

Simulation test device and method for blind area detection equipment
Technical Field
The invention relates to the field of automobiles, in particular to a simulation test device and a simulation test method for blind area detection equipment.
Background
The test of the existing vehicle-mounted blind area detection system is mounted on a test vehicle and is actually carried out on a road. However, in the test, it is difficult to control the vehicle to achieve a constant speed due to an artificial technical problem, so that it becomes very difficult to test an alarm function at a certain speed. Particularly, the problem of the alarm function of the critical point is more prominent. It is common for the test vehicle speed to be below the threshold vehicle speed when the reference vehicle is present in the target area, resulting in unsuccessful testing. The test method is not only low in efficiency, but also is very inconvenient due to the condition of road traffic.
Disclosure of Invention
In order to overcome all the defects of the existing related products, the invention provides a simulation test device and a simulation test method of blind area detection equipment.
The technical scheme adopted for solving the technical problems is as follows:
the invention provides a simulation test device of blind area detection equipment, which comprises: the device comprises a bracket, a guide rail A, a guide rail B, a reference object, a detection device, a motor A and a motor B; the detection device is characterized in that the guide rail A and the guide rail B are arranged in parallel, the support is fixedly arranged on the guide rail A, the reference object is arranged on the guide rail B, the detection device is fixedly arranged on the support, the visual field detection direction faces to the guide rail B, and the motor A and the motor B are respectively connected with the guide rail A and the guide rail B.
As a further improvement of the invention, the simulation test device of the blind area detection equipment also comprises a vehicle-mounted computer, an upper computer and an alarm display, wherein the vehicle-mounted computer is connected with the detection device and receives information acquired by the detection device, the vehicle-mounted computer is also connected with the upper computer and the alarm display, and the alarm display can send out an alarm.
As a further improvement of the invention, the vehicle speed of the simulation test is input into the vehicle-mounted computer through the upper computer.
As a further development of the invention, the detection device comprises a camera or radar which acquires images and positional information of the reference object.
As a further development of the invention, the vehicle computer can be either present alone or integrated into the vehicle control unit VCU.
As a further improvement of the invention, the simulation test device for blind area detection can also comprise a motor controller, wherein the motor controller is connected with the motor A and the motor B, and the motor controller indirectly controls the running speeds of the guide rail A and the guide rail B through the motor A and the motor B.
The invention provides a simulation test method for blind area detection, which comprises the following steps:
the first step: placing the guide rail A and the guide rail B in parallel;
and a second step of: installing blind area detection equipment on the guide rail A; placing a reference object on the B guide rail;
and a third step of: in the blind area detection equipment, inputting a vehicle speed of a simulation test;
fourth step: setting the running speed of a guide rail B where a reference object is positioned as X;
fifth step: setting the running speed of the guide rail A where the blind area detection equipment is positioned as Y;
sixth step: after capturing the reference object, the blind area detection device checks whether the blind area detection device functions normally.
As a further improvement of the invention, if the simulation test is that the alarm function is performed when the automobile goes beyond a stationary object beside in the running process, the guide rail B where the reference object is positioned can be set to be stationary, namely, X is set to be 0;
if the simulation test is beyond the alarm function of other pedestrians or vehicles in the dead zone of the automobile, the guide rail A where the detection device is positioned can be set to be stationary, namely Y is set to be 0.
As a further improvement of the present invention, the blind area detecting apparatus further includes an upper computer and a vehicle-mounted computer, and in the third step, the vehicle speed of the simulation test is input into the vehicle-mounted computer through the upper computer.
As a further improvement of the present invention, the blind area detection apparatus further includes a detection device including a camera or a radar, and an alarm display, in the sixth step: capturing a reference object by a detection device; and whether the blind area detection equipment is normal or not is checked through whether the alarm display alarms, if the alarm alarms, the blind area detection equipment is successfully detected, if not, the blind area detection equipment is considered to be failed in detection, and if not, the blind area detection equipment is invalid.
Compared with the prior art, the invention has the following advantages:
1. the running speed of the guide rail is controlled by the motor, the speed is constant, and the problem of unstable running speed in the actual vehicle testing process is solved.
2. The running speed of the guide rail is controlled by the motor, so that the problem that the speed of the test vehicle is lower than the critical point speed when the reference vehicle appears in the target area is solved.
3. The testing process can be completed in a laboratory, and various inconveniences of testing on roads are overcome.
Drawings
FIG. 1 is a schematic diagram of a simulation test device for blind zone detection according to the present invention;
FIG. 2 is a flow chart of a simulation test method for blind area detection according to the invention.
Reference numerals: 1-a bracket; a 2-A guide rail; 3-B guide rails; 4-a motor controller; 5-reference; 6-a vehicle-mounted computer; 7-an upper computer; 8-an alarm display; 9-a detection device; a 41-A motor; 42-B motor.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1, a general automobile blind area detection device comprises a vehicle-mounted computer 6, an upper computer 7, an alarm display 8 and a detection device 9, wherein the simulation test device is used for testing whether the blind area detection device of an automobile is normal or not.
The simulation test device of the blind area detection equipment further comprises a support 1, an A guide rail 2, a B guide rail 3, a motor controller 4, a reference object 5, a detection device 9, an A motor 41 and a B motor 42.
The A guide rail 2 and the B guide rail 3 are arranged in parallel, the support 1 is fixedly arranged on the A guide rail 2 and runs together with the A guide rail 2, the reference object 5 is arranged on the B guide rail 3 and runs together with the B guide rail 3, the detection device 9 is fixedly arranged on the support 1, the visual field detection direction faces the B guide rail 3, the distance between the A guide rail 2 and the B guide rail 3 is not limited, but the B guide rail 3 is required to be in the visual field range of the detection device 9, and the guide rail can be in a metal crawler type or other equivalent functional form.
The vehicle-mounted computer 6 is connected with the detection device 9 and receives the image and the position information acquired by the detection device 9, and the detection device 9 comprises a camera or a radar. The connection mode of the vehicle-mounted computer 6 and the detection device 9 can be wired connection or wireless equipment connection for transmitting information, and the vehicle-mounted computer 6 can exist alone or be integrated into a vehicle control unit VCU.
The vehicle-mounted computer 6 is also connected with the upper computer 7 and the alarm display 8, the vehicle speed of the simulation test is input to the vehicle-mounted computer 6 through the upper computer 7, the vehicle-mounted computer 6 transmits information to the alarm display 8 after the detection device 9 captures the reference object 5, and the alarm display 8 sends an alarm signal.
The motor A41 and the motor B42 are respectively connected with the guide rail A2 and the guide rail B3, the motor A41 and the motor B42 provide power support for the guide rail A2 and the guide rail B3, and the motor can be integrated with the guide rail or independently exist; the motor controller 4 is connected with the motor A41 and the motor B42, the operation of the motor A41 and the motor B42 is controlled by the motor controller 4, and the motor controller 4 indirectly controls the operation speed of the guide rail A2 and the guide rail B3 through the motor A41 and the motor B42.
Referring to fig. 2, a method for simulating and testing blind area detection includes the steps of:
s1: the guide rail A (2) and the guide rail B (3) are arranged in parallel;
s2: installing blind area detection equipment on the guide rail A (2); placing a reference object on the B guide rail (3);
s3: in the blind area detection equipment, inputting a vehicle speed of a simulation test;
in step S3, specifically, the vehicle speed of the simulation test is input into the vehicle-mounted computer 6 through the upper computer 7;
s4: setting the running speed of the B guide rail 3 where the reference object 5 is positioned as X;
in step S4, if the simulation test is that the vehicle goes beyond the alarming function of the stationary object beside in the running process, the B guide rail 3 where the reference object 5 is located may be set to be stationary, i.e. X is set to be 0;
s5: setting the running speed of the guide rail A2 where the detection device 9 is positioned as Y;
in step S5, if the simulation test is that the alarm function of other pedestrians or vehicles in the dead zone of the automobile is exceeded, the a guide rail 2 where the detection device 9 is located may be set to be stationary, i.e. Y is set to be 0;
s6: after capturing the reference object 5, the blind area detection equipment checks whether the blind area detection equipment functions normally;
in step S6, specifically, after the reference object 5 is captured by the detection device 9, whether the alarm display 8 alarms or not is checked, if the alarm is given, the detection is successful, the function of the blind area detection device is normal, otherwise, the detection is considered to be failed, and the function of the blind area detection device is invalid.
The simulation test method of the blind area detection is illustrated as follows:
if the simulation speed is 20km/h, the speed is set to be 20km/h, if the simulation running speed of a person or object to be overtaken by the automobile is 30km/h, the relative speed is 10km/h, at the moment, if the simulation test is the alarming function of the pedestrian vehicle which is overtaken next to the vehicle in a dead zone, the A guide rail 2 where the detection device 9 is positioned is kept still, the B guide rail 3 where the reference object 5 is positioned is set to be 10km/h, in the state, after the camera captures the reference object 5, whether the alarm display 8 alarms or not is checked, if the alarm is successful, otherwise, the alarm is considered to be failed; if the simulation test is beyond the alarming function of stationary objects such as a fence and a flower bed, the B guide rail 3 where the reference object 5 is located is kept stationary, the A guide rail 2 where the detection device 9 is located is set to have the running speed of 10km/h, in the state, after the camera captures the reference object 5, whether the alarming display 8 alarms or not is checked, if the alarming is successful, the detection is successful, otherwise, the failure is considered. Under practical conditions, the speed difference between the two guide rails may be too large, and the speed of a single guide rail cannot meet the requirement, at this time, the speed difference can be distributed to the two guide rails, the two guide rails run in opposite directions, the simulation test is completed according to the steps, and the running speeds of the guide rail A2 and the guide rail B3 can be set automatically according to the practical conditions.
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 above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.

Claims (9)

1. A simulation test device of blind area check out test set for detect blind area check out test set of car, its characterized in that includes:
the device comprises a bracket (1), an A guide rail (2), a B guide rail (3), a reference object (5), a detection device (9), an A motor (41) and a B motor (42); the detection device comprises a support (1), a reference object (5), a detection device (9), a motor A (41) and a motor B (42), wherein the support (1) is fixedly arranged on the guide A (2), the reference object (5) is arranged on the guide B (3), the detection device (9) is fixedly arranged on the support (1) and the visual field detection direction is towards the guide B (3), and the motor A (41) and the motor B (42) are respectively connected with the guide A (2) and the guide B (3);
the detection device (9) comprises a camera or radar which acquires images and position information of the reference object (5).
2. The simulation test apparatus of the blind area detection apparatus according to claim 1, wherein: the simulation test device of the blind area detection equipment further comprises a vehicle-mounted computer (6), an upper computer (7) and an alarm display (8), wherein the vehicle-mounted computer (6) is connected with the detection device (9) and receives information acquired by the detection device (9), the vehicle-mounted computer (6) is connected with the upper computer (7) and the alarm display (8), and the alarm display (8) can send out an alarm.
3. The simulation test apparatus of the blind area detection apparatus according to claim 2, wherein: the vehicle speed of the simulation test is input to the vehicle-mounted computer (6) through the upper computer (7).
4. The simulation test apparatus of the blind area detection apparatus according to claim 2, wherein: the vehicle-mounted computer (6) can exist alone or can be integrated into the vehicle controller VCU.
5. The simulation test apparatus of the blind area detection apparatus according to claim 1, wherein: the simulation test device for blind area detection can further comprise a motor controller (4), wherein the motor controller (4) is connected with the A motor (41) and the B motor (42), and the motor controller (4) indirectly controls the running speeds of the A guide rail (2) and the B guide rail (3) through the A motor (41) and the B motor (42).
6. The simulation test method of the blind area detection equipment is characterized by comprising the following steps of:
the first step: the guide rail A (2) and the guide rail B (3) are arranged in parallel;
and a second step of: installing blind area detection equipment on the guide rail A (2); placing a reference object (5) on the B guide rail (3);
and a third step of: in the blind area detection equipment, inputting a vehicle speed of a simulation test;
fourth step: setting the running speed of a guide rail B (3) where a reference object (5) is positioned as X;
fifth step: setting the running speed of the guide rail A (2) where the blind area detection equipment is positioned as Y;
sixth step: after the blind area detection device captures the reference object (5), whether the blind area detection device is normal in function is checked.
7. The simulation test method of the blind area detection apparatus according to claim 6, wherein: if the simulation test shows that the automobile has an alarm function when the automobile goes beyond a stationary object beside the automobile in the running process, the B guide rail (3) where the reference object (5) is positioned can be set to be stationary, namely X is set to be 0;
if the simulation test is beyond the alarm function of other pedestrians or vehicles in the dead zone of the automobile, the guide rail A (2) where the detection device (9) is positioned can be set to be stationary, namely Y is set to be 0.
8. The simulation test method of the blind area detection apparatus according to claim 6, wherein: in the third step, the vehicle speed of the simulation test is input into the vehicle-mounted computer (6) through the upper computer (7).
9. The simulation test method of the blind area detection apparatus according to claim 8, wherein: the blind area detection device further comprises a detection means (9) and an alarm display (8), the detection means (9) comprising a camera or radar, in the sixth step:
capturing a reference object (5) by a detection device (9);
and whether the blind area detection equipment is normal in function is checked through whether an alarm display (8) alarms, if the alarm is sent, the blind area detection equipment is successfully detected, if not, the blind area detection equipment is considered to be failed in detection, and if not, the blind area detection equipment is invalid in function.
CN201510933895.9A 2015-12-15 2015-12-15 Simulation test device and method for blind area detection equipment Active CN106885700B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109870310A (en) * 2017-12-04 2019-06-11 深圳市航盛电子股份有限公司 A kind of test method and test macro
CN108445459B (en) * 2018-03-16 2021-04-20 北京润科通用技术有限公司 Blind area detection radar test method and system
CN108982120A (en) * 2018-07-26 2018-12-11 北京新能源汽车股份有限公司 A kind of automobile back view verifying device

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007017400A (en) * 2005-07-11 2007-01-25 Sony Corp View angle characteristic measuring method and view angle characteristic measuring device
CN101050944A (en) * 2006-04-04 2007-10-10 高田株式会社 Object detecting system, actuating device control system, vehicle, and object detecting method
JP2010033106A (en) * 2008-07-24 2010-02-12 Fujitsu Ten Ltd Driver support device, driver support method, and driver support processing program
DE102009024961A1 (en) * 2009-06-12 2010-12-16 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Light density field recording method for head lamp of vehicle, involves measuring illumination region detected by camera, and combining illumination region in entire image of light density field of head lamp
CN202204662U (en) * 2011-09-13 2012-04-25 苏州市电子产品检验所有限公司 Viewing angle measurement device for liquid crystal display television
CN102967473A (en) * 2012-11-30 2013-03-13 奇瑞汽车股份有限公司 Driver front-view measuring device
CN103200422A (en) * 2013-04-12 2013-07-10 深圳市航盛电子股份有限公司 Measuring device and measuring method of camera view angles
CN203221931U (en) * 2013-01-25 2013-10-02 镇江博联电子科技有限公司 Monitoring and early warning system for blind area of right rear side of vehicles
CN104714048A (en) * 2015-03-30 2015-06-17 上海斐讯数据通信技术有限公司 Detection method and mobile terminal for movement speed of moving object
CN104977171A (en) * 2015-07-01 2015-10-14 奇瑞汽车股份有限公司 Device for detecting dead-zone monitoring system controller and control method thereof
CN205426529U (en) * 2015-12-15 2016-08-03 深圳市航盛电子股份有限公司 Simulating measurement setup of blind area check out test set

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007017400A (en) * 2005-07-11 2007-01-25 Sony Corp View angle characteristic measuring method and view angle characteristic measuring device
CN101050944A (en) * 2006-04-04 2007-10-10 高田株式会社 Object detecting system, actuating device control system, vehicle, and object detecting method
JP2010033106A (en) * 2008-07-24 2010-02-12 Fujitsu Ten Ltd Driver support device, driver support method, and driver support processing program
DE102009024961A1 (en) * 2009-06-12 2010-12-16 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Light density field recording method for head lamp of vehicle, involves measuring illumination region detected by camera, and combining illumination region in entire image of light density field of head lamp
CN202204662U (en) * 2011-09-13 2012-04-25 苏州市电子产品检验所有限公司 Viewing angle measurement device for liquid crystal display television
CN102967473A (en) * 2012-11-30 2013-03-13 奇瑞汽车股份有限公司 Driver front-view measuring device
CN203221931U (en) * 2013-01-25 2013-10-02 镇江博联电子科技有限公司 Monitoring and early warning system for blind area of right rear side of vehicles
CN103200422A (en) * 2013-04-12 2013-07-10 深圳市航盛电子股份有限公司 Measuring device and measuring method of camera view angles
CN104714048A (en) * 2015-03-30 2015-06-17 上海斐讯数据通信技术有限公司 Detection method and mobile terminal for movement speed of moving object
CN104977171A (en) * 2015-07-01 2015-10-14 奇瑞汽车股份有限公司 Device for detecting dead-zone monitoring system controller and control method thereof
CN205426529U (en) * 2015-12-15 2016-08-03 深圳市航盛电子股份有限公司 Simulating measurement setup of blind area check out test set

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
蔡勇 ; 秦现生 ; 张雪峰 ; 张培培 ; 单宁 ; .多摄像机视觉检测大范围布置方法及其数据拼接.中国机械工程.2011,(16),1984-1987. *

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Effective date of registration: 20231213

Address after: 430000 Commercial Building 103-68, Xiaojunshan Community, Junshan Street, Wuhan Economic and Technological Development Zone, Wuhan City, Hubei Province

Patentee after: Wuhan Hangsheng Automobile Electronics Co.,Ltd.

Address before: 518000 Hangsheng Industrial Park, Fuyuan 1st Road, Heping Village, Fuyong Town, Bao'an District, Shenzhen City, Guangdong Province

Patentee before: SHENZHEN HANGSHENG ELECTRONICS Co.,Ltd.