CN109556880A - The test device and test method of image-type collision prevention of vehicle module - Google Patents
The test device and test method of image-type collision prevention of vehicle module Download PDFInfo
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
A kind of test device of image-type collision prevention of vehicle module, whether the function to testing image formula collision prevention of vehicle module can normal operation.Test device includes fixing seat, display unit, increment microscope group and signal generation unit.Fixing seat makes image-type collision prevention of vehicle module capture direction pick-up image towards one to stabilized image formula collision prevention of vehicle module.Display unit is to show test pictures, and test pictures are located on acquisition direction, and the content of test pictures includes at least one event to be tested.Increment microscope group is set between fixing seat and display unit, the image size and the visual field that adjustment image-type collision prevention of vehicle module is captured.Signal generation unit provides the speed that one corresponds to specified speed and emulates signal to image-type collision prevention of vehicle module, uses whether testing image formula collision prevention of vehicle module can generate correct response for event to be tested in specified speed.The present invention also proposes a kind of test method of image-type collision prevention of vehicle module.
Description
Technical field
The present invention about test collision prevention of vehicle module, especially with regard to image-type collision prevention of vehicle module test device with
And test method.
Background technique
Image-type collision prevention of vehicle module (Intelligent Detection Warning System, IDWS) is in vehicle
Upper setting phtographic lens persistently captures the image in the certain angular field of view of vehicle front, analyzes the dynamic object and vehicle in image
Distance itself.Cooperate vehicle itself speed comprehensive analysis, assess vehicle front dynamic object and vehicle itself away from
From whether safe distance is less than, to determine to issue warning to driving, or the acceleration of vehicle, control of slowing down actively are intervened by anti-collision system
System.In addition, by the identification of roadmarking (divisional line), also may determine that vehicle whether run-off-road, thus to driving
It issues warning or actively intervenes the manipulation of vehicle by anti-collision system.General optics or sound wave type ranging for preventing collision system usually need
Will the plate (such as protect bar) to vehicle reequiped to install sensor, and configure necessary route to computer of driving a vehicle.Image
The advantages of formula collision prevention of vehicle module, is can to integrate vehicle-running recording system, and be easy installation, repacking (be not required to change plate,
Need to only be fixed on before front), it is not limited by vehicle existing line.
However, aforementioned image-type collision prevention of vehicle module relates to the complicated operating mechanism of hardware and software, system synthesis is needed
Take a sample test the function of being confirmed whether to bring into normal play.Existing test mode is that system synthesis is installed online in automobile to vehicle
On, then by being sampled in most vehicles, driven by tester and be sampled vehicle in test runway or real road driving.It is real
Border driving vehicle testing image-type collision prevention of vehicle module is very time-consuming, and per car at least needs to test more than 15 minutes, and can only
It is taken a sample test with the sampling proportion of very little.Meanwhile to build cost also relatively high for the practical system for driving vehicle testing.
Summary of the invention
In view of the above problems, the present invention proposes a kind of test device of image-type collision prevention of vehicle module, to test a shadow
As whether the function of formula collision prevention of vehicle module can normal operation.The test device includes a fixing seat, a display unit, an increment
Microscope group and a signal generation unit.Fixing seat makes image-type collision prevention of vehicle module to stabilized image formula collision prevention of vehicle module
Direction pick-up image is captured towards one.Display unit is to show a test pictures, and the test pictures are located on the acquisition direction,
The image-type collision prevention of vehicle module is set to continue to capture the test pictures by the display unit, the content of the test pictures includes at least
One event to be tested.Increment microscope group is set between the fixing seat and the display unit, adjusts the image-type collision prevention of vehicle module
The image size captured and the visual field.Signal generation unit provides the speed that one corresponds to specified speed and emulates signal to the shadow
As formula collision prevention of vehicle module；Wherein, the electric signal caused by mechanism that tests the speed of the speed emulation signal and a vehicle is phase similar shape
The signal of formula.
The present invention also proposes a kind of test method of image-type collision prevention of vehicle module, to test an image-type collision prevention of vehicle
Module includes: fixing the image-type collision prevention of vehicle module, it is made to be directed at a display unit pick-up image；One increment microscope group is installed
Between the image-type collision prevention of vehicle module and the display unit, so that the image-type collision prevention of vehicle module passes through the teleconverter
Group captures the amplification virtual image of the display unit；A video streaming signal is provided to the display unit, the display unit is made to show this
Test pictures；Wherein, the content of the test pictures includes at least one event to be tested；One speed is provided and emulates signal to the image
Formula collision prevention of vehicle module；Wherein, speed emulation signal system is exported according to a command speed, the velocity measurement mechanisms of one automobile of emulation
Electric signal；When being recorded in the event to be tested generation, reaction made by the image-type collision prevention of vehicle module.
In one or more specific embodiments, event to be tested includes front vehicles brake, front vehicles invasion vehicle
Lane and driving moving-wire run-off-road are invaded in road, pedestrian.
Through the invention, image-type collision prevention of vehicle module can be tested directly in interior, and be in installation to vehicle
It is tested before.By the broadcasting of test pictures, the event of all settings can occur one by one in a short time, effectively
Shorten the integrated testability time in ground.Therefore, in the image-type collision prevention of vehicle module of a batch, the ratio taken a sample test can increase,
Even entire batch is all tested, and is effectively reduced mounted image-type collision prevention of vehicle module and integrity problem occurs
Probability.
Detailed description of the invention
Fig. 1 is the circuit block diagram of image-type collision prevention of vehicle module in the embodiment of the present invention.
Fig. 2 is the schematic diagram of the test device of image-type collision prevention of vehicle module in the embodiment of the present invention.
Fig. 3 is the imaging schematic diagram of increment microscope group in the embodiment of the present invention.
Fig. 4 is distance, the high-level schematic of practical object test in the embodiment of the present invention.
Fig. 5 is in the embodiment of the present invention, and display unit shows the schematic diagram of picture to be measured.
Fig. 6 is the flow chart of test method in the embodiment of the present invention.
Fig. 7 is the detail flowchart of test method in Fig. 6.
Wherein appended drawing reference are as follows:
10 image-type collision prevention of vehicle modules
12 image acquisition unit, 14 arithmetic element
16 storage element, 18 Bus Wire unit
18a speed signal transmission port 18b power delivery port
100 test device, 110 fixing seat
112 fixture, 120 display unit
130 increment microscope group of 120a test pictures
132 convex lens, 140 signal generation unit
142 signal output port, 144 operation interface
150 playing device C capture direction
D distance F focus
I virtual image S test target
110~Step of h centre-height Step, 156 step
Specific embodiment
As shown in Figure 1, being the basic circuit block diagram of image-type collision prevention of vehicle module 10.Image-type collision prevention of vehicle module 10
Include an image acquisition unit 12, an arithmetic element 14, a storage element 16 and a Bus Wire unit 18.Image acquisition unit
12, to lasting pick-up image, generate video streaming signal.Image acquisition unit 12 is electrically connected to arithmetic element 14, and persistently passes
Give the video streaming signal to the arithmetic element 14.Storage element 16 is connected to arithmetic element 14, to store the software wanted
Or firmware, and the temporarily providing room as data processing.Bus Wire unit 18 is electrically connected at image acquisition unit 12, arithmetic element
14, storage element 16 to provide external connection interface, and carry out necessary signal conversion or electrical power conversion.Wherein Bus Wire
Unit 18 includes at least speed signal transmission port 18a and power delivery port 18b.Speed signal transmission port 18a connection is external
Signal source and arithmetic element 14, for arithmetic element 14 obtain speed signal, to be converted to vehicle movement speed.Power delivery
Port 18b carries out necessary electrical power conversion to obtain electric power, to be supplied to image acquisition unit 12, arithmetic element 14, storage
Unit 16.Fig. 1 show the basic circuit of image-type collision prevention of vehicle module 10, and main system is to be tested to illustrate institute of the invention
Object.Different image-type collision prevention of vehicle modules 10 have different additional function and detailed circuit, such as image-type vehicle
Anticollision module 10 is also typically used as the fore direction photographing machine of vehicle, and to carry out driving recording, those parts are not the technology of the present invention spy
Where sign, repeat no more below.
As shown in Fig. 2, for a kind of test device of image-type collision prevention of vehicle module 10 disclosed by the embodiment of the present invention
100, whether the function to testing image formula collision prevention of vehicle module 10 can normal operation.
As shown in Fig. 2, the test device 100 of image-type collision prevention of vehicle module 10 includes a fixing seat 110, a display unit
120, an increment microscope group 130 and a signal generation unit 140.
Fixing seat 110 makes the image of image-type collision prevention of vehicle module 10 to stabilized image formula collision prevention of vehicle module 10
Acquisition unit 12 captures direction C pick-up image towards one.Fixing seat 110 is equipped with fixture 112, with rapidly fixed or disassembly image-type
Collision prevention of vehicle module 10.Fixture 112 shown in Fig. 2 has the combination of bolt and clamping plate, which is only to illustrate, not to limit
112 kenel of fixture processed, fixture 112 only need to be capable of fixing image-type collision prevention of vehicle module 10, and specific embodiment is not
It limits.
Display unit 120 is to show a test pictures 120a, and test pictures 120a is located on the C of the acquisition direction, makes
The image acquisition unit 12 for obtaining image-type collision prevention of vehicle module 10 continues to capture test pictures 120a by the display unit 120.
Increment microscope group 130 is set between the fixing seat 110 and the display unit 120, and it is anti-to use adjustment image-type vehicle
Hit the image size and the visual field that the image acquisition unit 12 of module 10 is captured.In a specific embodiment, increment microscope group 130 is solid
Due to the edge of fixing seat 110, correspond to image acquisition unit 12.
As shown in Figures 2 and 3, increment microscope group 130 can be made of one or more optical mirror slips, and simplest composition is one
Convex lens 132 is then one equivalent convex lens 132 of synthesis in the case where multiple optical mirror slips.The position position of display unit 120
Between increment microscope group 130 and its focus F, arrived so that the image acquisition unit 12 of image-type collision prevention of vehicle module 10 be allowed to capture
The virtual image I of the amplification of test pictures 120a.
In conjunction with refering to shown in Fig. 3 and Fig. 4, increment microscope group 130 is primarily to carry out the emulation of object distance, so that image capture
The image for the test pictures 120a that unit 12 is captured by display unit 120, is equal to image acquisition unit 12 directly to reality
The image of border scene (size of the object in image wants equal or approximate).As shown in Figure 4, installation school is carried out on a vehicle money
Timing, the setting that liftoff 223 centimeters high (corresponding to image acquisition unit 12) can be arranged in the centre-height h of test target S are high
Degree, and test target S is then 5.2 centimetres with 12 distance D of image acquisition unit.And in test device 100 of the invention, Gu
The distance between reservation 110 and display unit 120 are much smaller than 1 centimetre, in one embodiment, increment microscope group 130 and display
The distance between unit 120 only has 18.7 centimeters (0.187 centimetre).But image acquisition unit 12 is by increment microscope group 130
The virtual image I for capturing the amplification of test pictures 120a is equivalent to image acquisition unit 12 and focuses in 5.2 centimetres,
And it simulates and actual scene is shot.Thus, so that it may by test pictures 120a, actually road be replaced to test shadow
As formula collision prevention of vehicle module 10.
As shown in Fig. 2 and Fig. 4, another condition that image-type collision prevention of vehicle module 10 needs is car speed.Existing
Some is carried out in test mode with real vehicle, is the mechanism that tests the speed by vehicle itself, in addition pulls out signal wire to image-type vehicle
Anticollision module 10 provides the electric signal of corresponding speed, sends image-type collision prevention of vehicle module 10 to be converted to car speed；Before
Stating the mechanism that tests the speed that electric signal system is existing vehicle can all generate, and be supplied to its driving computer or speedometer is scaled speed.
It is to be emulated with signal generation unit 140 in the present invention, speed emulation signal is provided, which emulates signal and vehicle
The electric signal caused by mechanism that tests the speed be same form signal.As shown in figure 4, signal generation unit 140 has a letter
Number output port 142, to be connected to the signal transmission port of image-type collision prevention of vehicle module 10.Signal generation unit 140 has
There is a signal generating circuit, to generate the speed emulation signal for corresponding to different speeds, makes image-type collision prevention of vehicle module 10
It is recognized as the speed signal from vehicle, to be scaled speed.CAN IC (control can be used in signal generating circuit above-mentioned
Device local area network IC, Controller Area Network IC) implement, CAN IC is the common communications protocol of vehicle control,
The speed signal (speed emulation signal) for generating vehicle can be readily write by software.In addition, signal generation unit 140 is also
With operation interface 144, to open or close output or the promotion/reduction speed emulation signal institute of speed emulation signal
Corresponding speed.
As shown in figure 5, display unit 120, to show test pictures 120a, the content of test pictures 120a includes various
Lane is invaded in the content that may be collided, such as front vehicles brake, front vehicles invasion lane, pedestrian, can also be with
It is driving moving-wire run-off-road.The content of test pictures 120a can be by the image of other vehicles actually road shooting, can also
To be computer animation (Computer Graphic, CG).The test captured due to image acquisition unit 12 by display unit 120
The content of picture 120a, can actually go to clap from image acquisition unit 12 identical content distance perception (object size) it is different, therefore
The present invention generates virtual image I by increment microscope group 130 and amplifies.Since test device 100 is equipped with increment microscope group 130, display
If 120 small size of unit, and be also not required between fixing seat 110 (or image acquisition unit 12) and display unit 120
Distance that will be too big.In specific embodiments of the present invention, display unit 120 is the LCD screen using 9 inch sizes.Test picture
The content of face 120a can be exported by signal generation unit 140 to display unit 120, be also possible in addition connect a playing device
150, the test pictures 120a recorded in advance is exported to display unit 120.System shown in Fig. 5 is equivalent by front truck, lane line, pedestrian
When draw, be actually for event to be tested, display one of them.
Test macro through the invention, present invention further propose that a kind of test side of image-type collision prevention of vehicle module 10
Method, be can rapidly testing image formula collision prevention of vehicle module 10, be not required to be installed on real vehicle actually drive test and try.
As shown in fig. 6, being first stabilized image formula collision prevention of vehicle module 10 when test, to fix its direction, make image
The image acquisition unit 12 of formula collision prevention of vehicle module 10 is directed at 120 pick-up image of display unit, as shown in step Step 110.
Then, installation increment microscope group 130 is single in the image acquisition unit 12 of image-type collision prevention of vehicle module 10 and display
Between member 120, the image acquisition unit 12 of image-type collision prevention of vehicle module 10 is made to capture display unit by increment microscope group 130
120 amplification virtual image I, as shown in step Step 120.
Then, a video streaming signal is provided to display unit 120, and the display unit 120 is made to show test pictures 120a,
The content of test pictures 120a includes at least one event to be tested, and the event to be tested includes the thing that may be collided
Part or deviation event, as shown in step Step 130.
One speed is provided and emulates signal to the image-type collision prevention of vehicle module 10, it is specified according to one which emulates signal system
Speed, the electric signal that the velocity measurement mechanisms of one automobile of emulation are exported, as shown in step Step 140.
When being recorded in the generation of each event to be tested according to timing, reaction made by the image-type collision prevention of vehicle module 10,
The test that the image-type collision prevention of vehicle module 10 can be completed, as shown in step Step 150.
As previously mentioned, event to be tested includes front vehicles brake (vehicle overtaking collision warning), front vehicles invasion vehicle
Lane, driving moving-wire run-off-road are invaded in road, pedestrian, and therefore, step Step 150 can be subdivided into the following steps.
Referring to Fig. 7, firstly, testing front truck spacing detection function (Forward Collision Waring, FCW), such as
Shown in step Step 151, the test pictures 120a of display unit 120, which can be, at this time follows front truck and keeps certain distance, it
Distance quickly shortens afterwards, and the front truck overall height in test pictures 120a will increase, until representing when certain door height and front truck
Spacing might have a possibility that colliding.At this point, record whether the image-type collision prevention of vehicle module 10 makes correct response,
As shown in step Step 152.In the requirement of existing testing standard, when speed is greater than 35km/h, front truck spacing detection function must
It must start, and target in 90 centimetres must be locked and warned.Front truck spacing detection function is divided into three kinds of states, including front truck is quiet
Only, this vehicle constant speed is advanced, front truck is with -0.3G deceleration, this vehicle constant speed is advanced and front truck advances at a slow speed, this vehicle constant speed is advanced.It surveys
It is 10 centimetres (36km/h) per second that speed is subject in the quasi- system of test-object, it is necessary in 17.29 centimetres to 20.71 centimetres of leading vehicle distance into
Row warning (default value is 19 centimetres, allowable error 9%)；Front truck is static, and the state that this vehicle constant speed is advanced need to be in 1.9 seconds
It is warned；Front truck is advanced, need to be warned in 2.2 seconds with -0.3G deceleration, this vehicle constant speed；Front truck advances at a slow speed, this vehicle etc.
Speed is advanced, and front truck advances at a slow speed, need to be warned in 1.8 seconds.Test pictures 120a may include aforementioned three kinds of states, can also
Only to test one of which.Warning way includes the cresset that frequency is 10 caution sounds per second and fast blink, the lamp
Number be usually by CAN IC issue signal to vehicle itself instrument board.
Then, lane deviation detection function (Lane Departure Warning System, LDWS) is tested, such as step
Shown in Step 153, only has lane line without vehicle in front of the test pictures 120a of display unit 120 at this time, and test pictures at this time
Lane line can be presented using computer animation (Computer Graphic, CG), it is not necessary to be so the picture of actually road shooting.
At this point, recording whether the image-type collision prevention of vehicle module 10 makes correct response, as shown in step Step 154.In existing test
The requirement of standard, after speed is greater than 60km/h, deviation detection function be must start up, and after speed is less than 52km/h
It could close, detecting distance is set as no front 5m to infinity.The built-in deviation value of deviation detection function, such as
This vehicle is not less than 50cm at a distance from lane, and in deviation, and the indicator of corresponding offset direction is not turned on and (that is, drives
Sail the intention for having no changing Lane or changing Lane do not beat indicator but) when warned.Warning way includes that frequency is every
Cresset second 3 caution sounds and flashed at a slow speed, the cresset are usually to pass through CAN IC to issue signal to vehicle itself
Instrument board.
Finally, test pedestrian (or bicycle) spacing detection function (Pedestrian Detection System,
PDS), as shown in step Step 155, the test pictures 120a of display unit 120 can be pedestrian and pass through in front at this time, if
Pedestrian level in picture is represented when being greater than certain door height and may be collided.At this point, it is anti-to record the image-type vehicle
Hit whether module 10 makes correct response, as shown in step Step 156.In the requirement of existing testing standard, in speed between 0
When to 60km/h, the spacing detection function of pedestrian's (or bicycle) be must start up, and must lock target in 45 centimetres and be warned
Show.It is 10 centimetres (36km/h) per second that speed is subject in testing standard system, it is necessary to 4.48 centimetres to 6.72 centimetres of leading vehicle distance
(default value is 5.6 centimetres, allowable error 20%) is inside warned, and need to be warned in 2.8 seconds.Warning way
It is the cresset of 10 caution sounds per second and fast blink including frequency, the cresset is usually to pass through CAN IC to issue signal
To the instrument board of vehicle itself.
The testing sequence of above-mentioned three kinds of detection functions, does not need such as step Step 151 to the peace of step Step 156
Row, the testing sequence of three kinds of detection functions can arbitrarily change, it is only necessary to which the content changed for test pictures 120a is repaired
Change, and adjustment signal generates the speed that unit 140 exports and emulates signal.
The above, is the basic function mode and testing standard of existing image-type collision prevention of vehicle module 10, but does not arrange
Except other detection function modes or other testing standards.The content for test pictures 120a is only needed to modify, so that it may
Cooperate different detection pattern or testing standard to being detected, is not required to change test device 100 or test method of the invention
Process.
Through the invention, image-type collision prevention of vehicle module 10 can be directly in indoor test, and is in installation to vehicle
Before tested.By the broadcasting of test pictures 120a, the event of all settings can occur one by one in a short time, have
Shorten the integrated testability time in effect ground.Therefore, in the image-type collision prevention of vehicle module 10 of a batch, the ratio taken a sample test can increase
Add, even entire batch is all tested, and is effectively reduced mounted image-type collision prevention of vehicle module 10 and reliability occurs
The probability of problem.
Claims (12)
1. a kind of test device of image-type collision prevention of vehicle module, to test an image-type collision prevention of vehicle module function whether
It can normal operation, which is characterized in that the test device includes:
One fixing seat makes the image-type collision prevention of vehicle module capture direction towards one to fix the image-type collision prevention of vehicle module
Pick-up image；
One display unit, to show a test pictures, and the test pictures are located on the acquisition direction, make the image-type vehicle
Anticollision module continues to capture the test pictures by the display unit；Wherein, the content of the test pictures includes at least one to be tested
Event；
One increment microscope group, is set between the fixing seat and the display unit, adjusts the image-type collision prevention of vehicle module and is captured
Image size and the visual field；And
One signal generation unit provides the speed that one corresponds to specified speed and emulates signal to the image-type collision prevention of vehicle module；
Wherein, the electric signal caused by mechanism that tests the speed of speed emulation signal and a vehicle is the signal of same form.
2. the test device of image-type collision prevention of vehicle module as described in claim 1, which is characterized in that the fixing seat is equipped with folder
Tool, rapidly to fix or dismantle the image-type collision prevention of vehicle module.
3. the test device of image-type collision prevention of vehicle module as described in claim 1, which is characterized in that the increment microscope group is fixed
In the edge of the fixing seat.
4. the test device of image-type collision prevention of vehicle module as described in claim 1, which is characterized in that the increment microscope group includes
An at least convex lens.
5. the test device of image-type collision prevention of vehicle module as described in claim 1, which is characterized in that the increment microscope group is multiple
Optical mirror slip synthesizes an equivalent convex lens.
6. the test device of image-type collision prevention of vehicle module as described in claim 4 or 5, which is characterized in that the display unit
Position be located between the increment microscope group and the increment microscope group focus, thus allow the image-type collision prevention of vehicle module capture to should
The virtual image of the amplification of test pictures.
7. the test device of image-type collision prevention of vehicle module as described in claim 1, which is characterized in that the signal generation unit
With a signal generating circuit, to generate the speed emulation signal for corresponding to different speeds.
8. the test device of image-type collision prevention of vehicle module as claimed in claim 7, which is characterized in that the signal generating circuit
It is controller local area network IC.
9. the test device of image-type collision prevention of vehicle module as claimed in claim 7, which is characterized in that the signal generation unit
Also there is an operation interface, to open or close output or promotion/the reduce speed emulation letter of speed emulation signal
Speed corresponding to number.
10. the test device of image-type collision prevention of vehicle module as described in claim 1, which is characterized in that the test pictures
Content is by the image or computer animation of the actually road shooting of other vehicles.
11. a kind of test method of image-type collision prevention of vehicle module, to test an image-type collision prevention of vehicle module, feature exists
In including:
The image-type collision prevention of vehicle module is fixed, it is made to be directed at a display unit pick-up image；
One increment microscope group is installed between the image-type collision prevention of vehicle module and the display unit, so that the image-type vehicle is anti-
Hit the amplification virtual image that module captures the display unit by the increment microscope group；
A video streaming signal is provided to the display unit, the display unit is made to show the test pictures；Wherein, the test pictures
Content include at least one event to be tested；
One speed is provided and emulates signal to the image-type collision prevention of vehicle module；Wherein, speed emulation signal system is specified according to one
Speed, the electric signal that the velocity measurement mechanisms of one automobile of emulation are exported；And
When being recorded in the event to be tested generation, reaction made by the image-type collision prevention of vehicle module.
12. the test method of image-type collision prevention of vehicle module as claimed in claim 11, which is characterized in that the event to be tested
Lane and driving moving-wire run-off-road are invaded comprising front vehicles brake, front vehicles invasion lane, pedestrian.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110346115A (en) * | 2019-06-13 | 2019-10-18 | 中国建材检验认证集团股份有限公司 | Automobile wind shield glass trial zone picture-drawing device and drawing method |
| CN113850101A (en) * | 2020-06-28 | 2021-12-28 | 财团法人车辆研究测试中心 | Driver state monitor test method and test system thereof |
| US11699003B2 (en) | 2020-11-16 | 2023-07-11 | Toyota Research Institute, Inc. | Portable flexible agents for simulation |
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