CN100401331C - Vehicle data collection system for electric power steering test - Google Patents
Vehicle data collection system for electric power steering test Download PDFInfo
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- CN100401331C CN100401331C CNB2006100530037A CN200610053003A CN100401331C CN 100401331 C CN100401331 C CN 100401331C CN B2006100530037 A CNB2006100530037 A CN B2006100530037A CN 200610053003 A CN200610053003 A CN 200610053003A CN 100401331 C CN100401331 C CN 100401331C
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Abstract
This invention discloses a car-carried data collection system use in electro-booster turning experiment including a car velocity sensor, a motor current sensor, a steering wheel torque sensor, a steering wheel corner sensor, a supply circuit, a light-coupled isolation circuit, a microprocessor, a communication interface circuit, a RS-232 interface, an interface switch line, a computer and an image head, which can collect data of turning system of cars traveling on the road actually, record the video images of the turning operation behavior of drivers timely, road and weather states and replay the dynamic curves of coherent experiment data by the computer after the test is ended and further to analyze and compute the changed situation of the test phenomenon and data.
Description
Technical field
The present invention relates to a kind of vehicle carried data collecting system, especially the data acquisition system (DAS) that can make a service test to the electric power-assisted steering apparatus of driving vehicle on real roads.
Background technology
Part as the automobile chassis electronic control system, electric power steering (Electrical PowerSteering, be called for short EPS) system and traditional hydraulic booster system comparison, replaced traditional servohydraulic cylinder with monolithic processor controlled direct current generator, have characteristics such as parts are few, volume is little, easy to maintenance, and increase substantially vehicle economy, dynamic property and maneuverability, increase the handling comfort and the security of human pilot simultaneously.Therefore, EPS is one of field of the present primary study of global famous motor corporation, also more and more is subjected to consumer's favor.
Yet at present EPS still is in the research and development stage at home, also mainly is to carry out on breadboard stand to the detection and the checking of its performance and control strategy.But bench test differs very big with the real roads test after all, and it lacks the many situations property and the authenticity of real roads real train test, the new product of test passes in bench test, and when putting into practical application, effect is often undesirable.Therefore the successful exploitation of EPS must be carried out a large amount of real roads real train tests, the performance of EPS could be adjusted to optimum Working.
Meanwhile, automobile is driven by the people, and human pilot can be handled steering wheel and be done certain divertical motion according to the needs of travel direction in the process that the manipulation running car advances; Simultaneously, human pilot also will constantly be revised his manipulation to steering wheel according to the road of time changing, traffic conditions and by the motor racing situation that eyes, hand and health perceive.Therefore we can say that the performance of EPS and driver's operating characteristic are closely related, must regard driver and automobile the people-truck system of an integral body as, must not ignore this key factor of driver the research of EPS performance.
So, can carry out data acquisition to the steering of the vehicle that on real roads, travels, and write down the vehicle carried data collecting system of the capable power of human pilot handling maneuver and road, weather conditions video image in good time, just become a kind of requisite experimental provision in the real roads test.
Summary of the invention
The objective of the invention is to test the variety of problems that is faced based on above EPS, and provide a kind of vehicle carried data collecting system that is used for electric power steering test, it can be under the state of real roads test, to angular signal, the dtc signal of vehicle EPS, and the motor current signal in vehicle speed signal and the EPS topworks is gathered.
The vehicle carried data collecting system that is used for electric power steering test of the present invention, comprise vehicle speed sensor, motor current sensor, the bearing circle torque sensor, steering wheel angle sensor, feed circuit, light idol buffer circuit, microprocessor, communication interface circuit, RS-232 interface, the interface conversion line, computer and camera, the output terminal of feed circuit respectively with light idol buffer circuit, microprocessor and communication interface circuit link to each other, the input end of light idol buffer circuit links to each other with the signal output part of vehicle speed sensor and motor current sensor, the output terminal of light idol buffer circuit links to each other with microprocessor, the signal output part of bearing circle torque sensor and steering wheel angle sensor links to each other with microprocessor, the output terminal of microprocessor links to each other with communication interface circuit, the output terminal of communication interface circuit is connected to RS-232 interface, the output terminal of RS-232 interface converts USB interface to through the interface conversion line and links to each other with computer, and camera connects computer.
Principle of work of the present invention is as follows;
The travel vehicle speed signal of on real roads vehicle, motor current signal is input in the microprocessor by light idol buffer circuit, and bearing circle dtc signal and steering wheel angle signal are directly inputted to microprocessor.Microprocessor carries out this four road signal after the digital-to-analog conversion, has deposited in register on the one hand, is undertaken through RS-232 interface data being passed to computer again after amplifying and noise reducing etc. handles by communication interface circuit on the other hand.Utilize camera that real-time video acquisition is carried out in handling maneuver behavior and road, the weather conditions of human pilot simultaneously.Have the VC.net of using written program in computer, like this, as long as call host computer procedure on the computer in test, the technician just can clearly see the vehicle real-time change process of test figure in the process of moving on computer display screen.Utilize computer program can realize the performance graph of correlation test data is carried out playback after the off-test, synchronously in conjunction with the test video, experimental phenomena and test figure situation of change are further analyzed and calculate simultaneously.
Beneficial effect of the present invention is:
The present invention can carry out data acquisition to the steering of the vehicle that travels on real roads, and handling maneuver behavior of real time record human pilot and information such as road, weather conditions video image, use the test figure data that the present invention can provide a large amount of preciousnesses for China domestic " automobile electric booster steering system (EPS) "; Simultaneously, the present invention's research that also can relate to auto steerer for other is every provides bigger help.
Description of drawings
Fig. 1 is a formation synoptic diagram of the present invention.
Embodiment
Further specify the present invention below in conjunction with accompanying drawing.
With reference to Fig. 1, the vehicle carried data collecting system that is used for electric power steering test of the present invention comprises vehicle speed sensor 3, motor current sensor 4, bearing circle torque sensor 5, steering wheel angle sensor 6, feed circuit 2, light idol buffer circuit 7, microprocessor 8, communication interface circuit 9, RS-232 interface 10, is used for RS-232 interface is converted to interface conversion line 11, computer 12 and the camera 13 of USB interface.Wherein feed circuit 2 input ends connect automobile power source 1, output terminal links to each other with light idol buffer circuit 7, microprocessor 8 and communication interface circuit 9 respectively, the input end of light idol buffer circuit 7 links to each other with the signal output part of vehicle speed sensor 3 with motor current sensor 4, and the output terminal of light idol buffer circuit 7 links to each other with microprocessor 8; The signal output part of bearing circle torque sensor 5 and steering wheel angle sensor 6 directly links to each other with microprocessor 8; The output terminal of microprocessor 8 links to each other with communication interface circuit 9; The output terminal of communication interface circuit 9 is connected to RS-232 interface 10, and the conversion line 11 that the output terminal of this interface changes USB interface by RS-232 interface links to each other with the USB port of computer 12; Camera 13 connects computer 12.
Above-mentioned microprocessor can adopt the MC9S12D Series MCU of Freescale (Freescale) semiconductor company, as the MC9S12DG256BMPV chip; Communication interface circuit can adopt the MAX232 chip; Feed circuit are made up of 7805 chips and peripheral cell thereof; Light idol buffer circuit can adopt the H11N1 chip; Vehicle speed signal can be inserted by the panel board interface, motor current sensor can adopt ZXCT1021 chip, bearing circle torque sensor and rotary angle transmitter can adopt the torque-corner compound sensor of U.S. BI company.
The effect of feed circuit 2 be exactly from automobile power source 1, obtain+voltage of the voltage of 12V and it is changed into+5V outputs in light idol buffer circuit 7, microprocessor 8, the communication interface circuit 9, for they provide required voltage.The effect of light idol buffer circuit 7 is to be input in the microprocessor 8 after the vehicle speed signal of the output of vehicle speed sensor 3 and motor current sensor 4 and motor current signal are handled again, to avoid the threat to microprocessor 8 of stronger marking current.The effect of microprocessor 8 be with the input four road signals---vehicle speed signal, motor current signal, bearing circle dtc signal and steering wheel angle signal carry out analog to digital conversion, storage and output.The effect of communication interface circuit 9 is exactly that four way word signals with microprocessor 8 output carry out outputing to RS-232 interface 10 after amplifying and noise reducing etc. handles.The test data signal of RS-232 interface output can be transferred to notebook computer 12 by interface conversion line 11 and get on, realize the performance graph of correlation test data is carried out playback.The effect of camera 13 is carried out synchronization video acquisition to process of the test exactly, helps the technician after off-test experimental phenomena and test figure situation of change to be further analyzed and to calculate.
Claims (4)
1. the vehicle carried data collecting system that is used for electric power steering test, it is characterized in that comprising vehicle speed sensor (3), motor current sensor (4), bearing circle torque sensor (5), steering wheel angle sensor (6), feed circuit (2), light idol buffer circuit (7), microprocessor (8), communication interface circuit (9), RS-232 interface (10), interface conversion line (11), computer (12) and camera (13), the output terminal of feed circuit (2) respectively with light idol buffer circuit (7), microprocessor (8) and communication interface circuit (9) link to each other, the input end of light idol buffer circuit (7) links to each other with the signal output part of vehicle speed sensor (3) with motor current sensor (4), the output terminal of light idol buffer circuit (7) links to each other with microprocessor (8), the signal output part of bearing circle torque sensor (5) and steering wheel angle sensor (6) links to each other with microprocessor (8), the output terminal of microprocessor (8) links to each other with communication interface circuit (9), the output terminal of communication interface circuit (9) is connected to RS-232 interface (10), the output terminal of RS-232 interface (10) converts USB interface to through interface conversion line (11) and links to each other with computer (12), and camera (13) connects computer (12).
2. the vehicle carried data collecting system that is used for electric power steering test according to claim 1 is characterized in that said microprocessor (8) is the MC9S12DG256BMPV chip.
3. the vehicle carried data collecting system that is used for electric power steering test according to claim 1 is characterized in that said communication interface circuit (9) is the MAX232 chip.
4. the vehicle carried data collecting system that is used for electric power steering test according to claim 1 is characterized in that said light idol buffer circuit (7) is the H11N1 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100530037A CN100401331C (en) | 2006-08-18 | 2006-08-18 | Vehicle data collection system for electric power steering test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100530037A CN100401331C (en) | 2006-08-18 | 2006-08-18 | Vehicle data collection system for electric power steering test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1912946A CN1912946A (en) | 2007-02-14 |
| CN100401331C true CN100401331C (en) | 2008-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100530037A Expired - Fee Related CN100401331C (en) | 2006-08-18 | 2006-08-18 | Vehicle data collection system for electric power steering test |
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| CN (1) | CN100401331C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104636294A (en) * | 2013-11-12 | 2015-05-20 | 陕西国力信息技术有限公司 | Interface converting circuit based on AMT system |
| CN116380456A (en) * | 2018-09-28 | 2023-07-04 | 国际计测器株式会社 | Test device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000168607A (en) * | 1998-12-11 | 2000-06-20 | Toyoda Mach Works Ltd | Electric power steering device |
| JP2001278083A (en) * | 2000-03-29 | 2001-10-10 | Mitsubishi Electric Corp | Motor-driven power steering control device |
| JP2003226250A (en) * | 2002-02-06 | 2003-08-12 | Daihatsu Motor Co Ltd | Electric power steering control device |
| US20040162655A1 (en) * | 2001-06-08 | 2004-08-19 | Patankar Ravindra P. | Velocity compensation control for electric steering systems |
| CN1595091A (en) * | 2004-06-29 | 2005-03-16 | 华中科技大学 | Automobile electric power-assisted steering system simulation testing arrangement |
-
2006
- 2006-08-18 CN CNB2006100530037A patent/CN100401331C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000168607A (en) * | 1998-12-11 | 2000-06-20 | Toyoda Mach Works Ltd | Electric power steering device |
| JP2001278083A (en) * | 2000-03-29 | 2001-10-10 | Mitsubishi Electric Corp | Motor-driven power steering control device |
| US20040162655A1 (en) * | 2001-06-08 | 2004-08-19 | Patankar Ravindra P. | Velocity compensation control for electric steering systems |
| JP2003226250A (en) * | 2002-02-06 | 2003-08-12 | Daihatsu Motor Co Ltd | Electric power steering control device |
| CN1595091A (en) * | 2004-06-29 | 2005-03-16 | 华中科技大学 | Automobile electric power-assisted steering system simulation testing arrangement |
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| Publication number | Publication date |
|---|---|
| CN1912946A (en) | 2007-02-14 |
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| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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Address after: 310027 Hangzhou, Zhejiang Province, Xihu District, Zhejiang Road, No. 38, No. Patentee after: Zhejiang University Patentee after: Zhejiang Wanda Automobile Direction Machine Co., Ltd. Address before: 310027 Hangzhou, Zhejiang Province, Xihu District, Zhejiang Road, No. 38, No. Patentee before: Zhejiang University Patentee before: Zhejiang Wanda Steering Gear Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080709 Termination date: 20190818 |
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| CF01 | Termination of patent right due to non-payment of annual fee |