CN105928713A - Signal reproduction system for real-car ABS four wheel speed sensor - Google Patents
Signal reproduction system for real-car ABS four wheel speed sensor Download PDFInfo
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- CN105928713A CN105928713A CN201610325170.6A CN201610325170A CN105928713A CN 105928713 A CN105928713 A CN 105928713A CN 201610325170 A CN201610325170 A CN 201610325170A CN 105928713 A CN105928713 A CN 105928713A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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Abstract
The invention discloses a signal reproduction system for a real-car ABS four wheel speed sensor, and the system comprises a computer, a signal playback module, a signal amplification module, rotating magnetic field generation modules, a sensor module, a signal conversion module, a collection card, and a DC voltage-stabilizing power supply. A to-be-reproduced ABS wheel speed sensor signal, i.e., a four-wheel real wheel speed curve data signal measured in a real-car matching durability test in various types of road conditions, is stored in the computer. The computer outputs the to-be-reproduced ABS wheel speed sensor signal to the signal playback module, and the to-be-reproduced ABS wheel speed sensor signal is converted into four corresponding groups of sinusoidal waveform signals. The four groups of sinusoidal waveform signals are amplified through the signal amplification module and transmitted to four rotating magnetic field generation modules. The four groups of sinusoidal waveform signals are converted into four independent rotating magnetic field signals, and excite four sensors to output signals, thereby achieving the reproduction of the ABS four wheel speed sensor signal. The system is advantageous in that the system saves manpower, financial resources and material resources, is good in repeatability, is more real and reliable in reproduced signals, and is safe and convenient to use.
Description
Technical field
The invention belongs to automobile ABS brake anti-blocking system and ESP electric stabilizing system reliability and the wheel speed sensors signal generation apparatus of endurancing, be specifically related to a kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system.
Background technology
Along with the development of Domestic Automotive Industry, the application of automobile sensor is more and more extensive, and wherein ABS wheel speed sensors is one of sensor the most crucial in automobile safety system, and it decides automobile braking safety.ABS brake anti-blocking system and ESP electric stabilizing system are wide variety of a kind of important safety on Hyundai Motor, for ABS/ESP manufacturer, in the product development process of ABS brake anti-blocking system and ESP electric stabilizing system, needing it is carried out reliability and endurancing, process of the test needs reliable and stable real ABS wheel speed sensors signal.During existing ABS/ESP performance test, its ABS wheel speed sensors signal source mainly has two kinds.A kind of is the endurancing of vehicle calibrating under various road conditions environment, and this test to expend substantial amounts of manpower, financial resources, material resources, and poor repeatability, has the biggest danger.Another kind is to use physical motion parts simulating wheel to rotate inductive pick-up output signal, and then give the endurancing of ABS/ESP system, this method is due to reasons such as the response speed of motor are low, low precision, machinery inertial are big, the wheel speed signal authenticity making offer is poor, it is impossible to ensure the authenticity of endurancing, reliability.
Summary of the invention
The technical problem to be solved is the deficiency in order to overcome the waste that there are substantial amounts of manpower, financial resources, material resources in the endurancing of the vehicle calibrating under prior art various road conditions environment, it is provided that a kind of have reproducible, without dangerous, can and the real vehicle ABS four-wheel wheel speed sensors signal reproduction system of real four-wheel wheel speed sensors signal consistent with real vehicle with ESP electric stabilizing system endurancing offer for ABS brake anti-blocking system.
The technical problem to be solved is to be realized by following technical scheme.The present invention is a kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system, it is characterized in, this system includes computer, and described computer is connected with signal playback module, signal amplification module, rotating excitation field generation module, sensor assembly, signal conversion module and capture card successively by serial ports；This system is additionally provided with D.C. regulated power supply, and D.C. regulated power supply is connected with signal playback module, signal amplification module, signal conversion module respectively, it is provided that working power；
The described computer-internal storage four-wheel true wheel speed curve data signal that vehicle calibrating endurancing pilot scale test obtains under ABS signal reproduction, various road conditions environment, signal is exported to signal playback module by computer, and signal playback module is converted into four groups of sine wave-shaped signals of correspondence four-wheel wheel speed curve data signal；
The output of described signal playback module connects the input of signal amplification module, four groups of sine wave-shaped signals amplify through signal amplification module gives rotating excitation field generation module, and rotating excitation field generation module is converted into four independent rotating excitation field signals four groups of sinusoidal waveform signals of telecommunication；Four independent rotating excitation field signal stimulus sensor modules, make sensor assembly export consistent with sine wave-shaped signal, real four-wheel wheel speed sensors signal；
The current signal of described sensor assembly output is converted into the voltage signal of standard, i.e. reproducing real vehicle ABS four-wheel wheel speed sensors waveform signal through signal conversion module, then flows to the ABS/ESP control system experimental bench of outside, for endurancing；
Described signal conversion module connects capture card, capture card reconnects computer, computer is by the standard voltage signal i.e. ABS four-wheel wheel speed signal after signal conversion module conversion, gathered by capture card and transfer back to computer, process the wheel speed curve that display collects, the truer four-wheel wheel speed curve data signal obtained with the endurancing pilot scale test of former vehicle calibrating compares and analyzes.
A kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system of the present invention, its further preferred technical scheme is: described signal playback module is made up of the signal playback circuit of four groups of independences, and often group signal playback circuit has a road input and two-way to export；The input signal of signal playback module is the true four-wheel wheel speed curve data signal that the endurancing pilot scale test of vehicle calibrating obtains, four groups of output signals are sine wave-shaped signal, and the two-way output signal often organized is orthogonal signalling, i.e. by the often group signal playback circuit in computer control signal playback module, make a road output signal another road phase of output signal advanced or delayed 90 degree；So signal playback module has four tunnel inputs and the output of eight tunnels, and wherein every two-way constitutes one group of signal, totally four groups of output signals, the number of delivering letters amplification module.
A kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system of the present invention, its further preferred technical scheme is: described signal amplification module is made up of the signal amplification circuit of four groups of independences, often group signal amplification circuit is made up of two paths of signals amplifying circuit, has two-way input and two-way to export；The output letter of signal playback circuit connects corresponding often group signal amplification circuit input.
A kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system of the present invention, its further preferred technical scheme is: described rotating excitation field generation module includes underframe and four rotating magnetic field generators, described underframe is provided with chute, chute is slidably fitted with some columns, column is provided with sensor fixed support and magnetic field generator fixed support；Sensor assembly is fixedly mounted on sensor fixed support；Four described rotating magnetic field generators are fixedly mounted on magnetic field generator fixed support.
A kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system of the present invention, its further preferred technical scheme is: each rotating magnetic field generator is made up of two coils, two iron cores and geometrical clamp；Two iron cores are fixed together by geometrical clamp, leave air gap between iron core, and two coils are connected respectively in the two-way output of two paths of signals amplifying circuit.
A kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system of the present invention, its further preferred technical scheme is: have circular hole and slotted eye on described sensor fixed support, sensor assembly is arranged in circular hole, and is fixed on sensor fixed support by slotted eye.
A kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system of the present invention, its further preferred technical scheme is: described sensor assembly includes that four sensors, four sensors are connected with signal conversion module respectively.
A kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system of the present invention, its further preferred technical scheme is: described signal conversion module is made up of four road signaling conversion circuits, and the output of four road signaling conversion circuits is all connected to the input of capture card；Described capture card 7 comprises at least four road analog input channels.
A kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system that the present invention provides, its test process can be described as follows:
(1) four ABS wheel speed sensors are arranged on sensor fixed support, make sensor sensing face relative with the iron core face of magnetic field generator.
(2) in a computer by software, select and signal (before test, the true four-wheel wheel speed curve data signal that former real vehicle endurancing pilot scale test is obtained is put in computer) that former real vehicle that the sensor model number installed matches records.
(3) software program is run, computer controls four groups of signal playback circuit and exports four groups of sine wave-shaped signals the most orthogonal, give four groups of signal amplification circuits respectively, four groups of signal amplification circuits export to four rotating magnetic field generators respectively, the rotating excitation field of four rotating magnetic field generator generations is respectively induced four sensors, four sensors output signal to signaling conversion circuit, tetra-wheel wheel speed waveform signals of real vehicle ABS that output reproduces, flow to the ABS/ESP control system experimental bench of outside, for endurancing.Simultaneously, the ABS four-wheel wheel speed sensors waveform signal effect generated is reproduced in order to test, four-wheel wheel speed sensors waveform signal is transferred back to computer by capture card, process the wheel speed curve that display collects, the truer wheel speed curve data signal obtained with the endurancing pilot scale test of former vehicle calibrating compares and analyzes.
Compared with prior art, the invention has the beneficial effects as follows: the present invention provide a kind of can, real four-wheel wheel speed sensors signal consistent with real vehicle with ESP electric stabilizing system endurancing offer for ABS brake anti-blocking system.Solve in the endurancing of the vehicle calibrating under various road conditions environment, there is the waste of substantial amounts of manpower, financial resources, material resources, have reproducible, non-hazardous advantage.Solve employing physical motion parts simulating wheel to rotate, inductive pick-up output signal, and then give in the endurancing of ABS/ESP system, there is wheel speed signal authenticity poor, the problem that response speed is low, low precision, machinery inertial are big, thus ensure ABS brake anti-blocking system and the authenticity of ESP electric stabilizing system endurancing, reliability.
Accompanying drawing explanation
Fig. 1 is the system block diagram of the present invention；
Fig. 2 is a kind of structural representation of the rotating excitation field generation module of the present invention；
Fig. 3 is a kind of structural representation of the rotating magnetic field generator of the present invention.
Detailed description of the invention
The present invention is described in detail with detailed description of the invention below in conjunction with the accompanying drawings, so that those skilled in the art are further understood that the present invention, and does not constitute the restriction to right of the present invention.
Embodiment 1, a kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system, as shown in Figure 1: include computer 1, signal playback module 2, signal amplification module 3, rotating excitation field generation module 4, sensor assembly 5, signal conversion module 6 and the capture card 7 being connected with computer successively；
This system is additionally provided with D.C. regulated power supply 8, and D.C. regulated power supply 8 is connected with signal playback module 2, signal amplification module 3, signal conversion module 6 respectively, provides working power for them；
Described computer 1 storage inside has the four-wheel true wheel speed curve data signal that vehicle calibrating endurancing pilot scale test obtains under ABS signal reproduction, various road conditions environment, computer 1 by serial ports connect described in signal playback module 2, the four-wheel true wheel speed curve data signal that the endurancing pilot scale test of vehicle calibrating is obtained by described computer 1 controls to export to described signal playback module 2 by software, and 2 four-wheel wheel speed curve data signals of described signal playback module are converted into four groups of sine wave-shaped signals of correspondence；
The input of the signal amplification module 3 described in output connection of described signal playback module 2, four groups of sine wave-shaped signals amplify through signal amplification module 3 gives described rotating excitation field generation module 4, and 4 four groups of sinusoidal waveform signals of telecommunication of described rotating excitation field generation module are converted into four independent rotating excitation field signals.
The difference that the field signal rotated and motor driven gear rotate is: do not produce mechanical rotation, noninertia, fast response time, precision height, four independent rotating excitation field signals encourage described sensor assembly 5, make sensor assembly 5 export consistent with sine wave-shaped signal, real four-wheel wheel speed sensors signal.
The current signal of described sensor assembly 5 output is converted into the voltage signal of standard through described signal conversion module 6, i.e. reproducing real vehicle ABS four-wheel wheel speed sensors waveform signal, flow to the ABS/ESP control system experimental bench of outside again, for endurancing.
Simultaneously, the ABS four-wheel wheel speed sensors waveform signal effect generated is reproduced in order to test, described signal conversion module 6 is connected described capture card 7, described capture card 7 connects computer 1, computer 1 signal conversion module 6 is changed after standard voltage signal i.e. ABS four-wheel wheel speed signal, gather and transfer back to computer 1 by capture card 7, process the wheel speed curve that display collects, the truer four-wheel wheel speed curve data signal obtained with the endurancing pilot scale test of former vehicle calibrating compares and analyzes.
Embodiment 2, in the signal reproduction system described in embodiment 1: described signal playback module 2 is made up of the signal playback circuit of four groups of independences, including signal playback circuit 21,22,23,24.Often group signal playback circuit has a road input, and two-way exports.The output of signal playback circuit 21 is A21, B21；The output of signal playback circuit 22 is A22, B22；The output of signal playback circuit 23 is A23, B23；The output of signal playback circuit 24 is A24, B24.Signal playback module 2 is connected with computer 1 by serial ports, and input signal is the true four-wheel wheel speed curve data signal that the endurancing pilot scale test of vehicle calibrating obtains, and four-wheel wheel speed curve data signal is the signal of four wheel wheel speed sensors of real vehicle.Can set order, the signal sequence of four wheel wheel speed sensors is respectively as follows: the near front wheel, off-front wheel, left rear wheel, off hind wheel；The near front wheel signal number of delivering letters playback circuitry 21, the off-front wheel signal number of delivering letters playback circuitry 22, the left rear wheel signal number of delivering letters playback circuitry 23, the off hind wheel signal number of delivering letters playback circuitry 24.The output signal of signal playback circuit 21,22,23,24 is sine wave-shaped signal, and A21, B21 constitute one group and orthogonal, and A22, B22 constitute one group and orthogonal, and A23, B23 constitute one group and orthogonal, and A24, B24 constitute one group and orthogonal.I.e. can control signal playback module 2 by computer 1 makes output signal B21 advanced or 90 degree of lag output signal A21 phase place, output signal B22 is advanced or 90 degree of lag output signal A22 phase place, output signal B23 is advanced or 90 degree of lag output signal A23 phase place, and output signal B24 is advanced or 90 degree of lag output signal A24 phase place.So signal playback module 2 has four tunnel inputs, eight tunnel outputs, totally four groups of output signals, the number of delivering letters amplification module 3.The signal one_to_one corresponding of four wheel wheel speed sensors of real vehicle of four groups of output signals and input.
Embodiment 3, in the signal reproduction system described in embodiment 1 or 2: described signal amplification module 3 is made up of the signal amplification circuit of four groups of independences, including signal amplification circuit 31,32,33,34.Often group signal amplification circuit is made up of the signal amplification circuit of two-way independence, has two-way input, two-way output.The input of signal amplification circuit 31 is A31, B31, and output is C31, D31；The input of signal amplification circuit 32 is A32, B32, and output is C32, D32；The input of signal amplification circuit 33 is A33, B33, and output is C33, D33；The input of signal amplification circuit 34 is A34, B34, and output is C34, D34.The output signal of signal playback circuit connects corresponding often group signal amplification circuit input, it may be assumed that A21 connects A31, B21 and connects B31；A22 connects A32, B22 and connects B32；A23 connects A33, B23 and connects B33；A24 connects A34, B24 and connects B34.Rotating excitation field generation module 4 is sent in the output of signal amplification circuit, and wherein output C31, D31 of signal amplification circuit constitutes one group, and C32, D32 constitute one group, and C33, D33 constitute one group, and C34, D34 constitute one group.
Embodiment 4, in signal reproduction system described in embodiment 1 or 2 or 3: as shown in Figure 2, described rotating excitation field generation module 4 includes underframe 42 and four rotating magnetic field generators 41, described underframe 42 is provided with chute 43, chute 43 is slidably fitted with some columns 44, column 44 is provided with sensor fixed support 45 and magnetic field generator fixed support 46；Sensor assembly 5 is fixedly mounted on sensor fixed support 45；Four described rotating magnetic field generators 41 are fixedly mounted on magnetic field generator fixed support 46.
Underframe 42 and the column 44 of the present invention are preferably made up of aluminum alloy materials.Preferably underframe 42 is cabinet shape structure, is respectively provided with a root post 44, every 2 root posts 44 are connected with a sensor fixed support 45 on 4 angles of underframe 42, and the middle part of underframe 42 is additionally provided with the column 44 for installing magnetic field generator fixed support 46.
Embodiment 5, in the signal reproduction system described in embodiment 4: as it is shown on figure 3, described rotating magnetic field generator 41 is made up of 411, two iron cores 412 of two coils and geometrical clamp 413, coil 411 input of first magnetic field generator 41 is C41, D41.Leaving air gap between said two iron core 412, two iron cores 412 are fixed together by geometrical clamp 413.Can be screwed on magnetic field generator fixed support 46 during installation.Four described rotating magnetic field generator 41 structures are identical, and the coil input end of second rotating magnetic field generator 41 is C42, D42；The coil input end of the 3rd rotating magnetic field generator 41 is C43, D43；The coil input end of the 4th rotating magnetic field generator 41 is C44, D44.41 two coils of each rotating magnetic field generator are connected respectively to often organize in the two-way output of signal amplification circuit, i.e. coil input end C41 is connected to the output C31 of signal amplification circuit 31, and coil input end D41 is connected to the output D31 of signal amplification circuit 31.Other identical, C42 connects C32, D42 and connects D32；C43 connects C33, D43 and connects D33；C44 connects C34, D44 and connects D34.Signal owing to being input in two coils 411 of each rotating magnetic field generator 41 is orthogonal sinusoidal wave signal, and therefore the sensing end face at two iron cores 412 forms rotating excitation field, inductive pick-up output signal.Rotating excitation field, compared with the mechanical wheel of motor, has and does not produces mechanical rotation, noninertia, fast response time, precision height, and therefore reproducing signal is truer, reliable, and system is safe and convenient to use.
Embodiment 6, in the signal reproduction system described in embodiment 4 or 5: have circular hole 47 and slotted eye 48 on described sensor fixed support 45, sensor assembly 5 is arranged in circular hole 47, and by slotted eye 48(securing member) be fixed on sensor fixed support 45.
Embodiment 7, in the signal reproduction system described in embodiment 1-6 any one: described sensor assembly 5 includes four sensors, respectively sensor 51,52,53,54；Four sensors are fixedly mounted on sensor fixed support 45, and 4 sensors are corresponding with 4 rotating magnetic field generators 41 respectively, and the output of four sensors is connected with signal conversion module 6 respectively.
Embodiment 8, executes in what described signal reproduction system of example 1-7: described signal conversion module 6 is made up of four road signaling conversion circuits, and the output of four road signaling conversion circuits is all connected to the input of capture card 7；Described capture card 7 comprises at least four road analog input channels.
Claims (8)
1. a real vehicle ABS four-wheel wheel speed sensors signal reproduction system, it is characterized in that, this system includes computer, and described computer is connected with signal playback module, signal amplification module, rotating excitation field generation module, sensor assembly, signal conversion module and capture card successively by serial ports；This system is additionally provided with D.C. regulated power supply, and D.C. regulated power supply is connected with signal playback module, signal amplification module, signal conversion module respectively, it is provided that working power；
The described computer-internal storage four-wheel true wheel speed curve data signal that vehicle calibrating endurancing pilot scale test obtains under ABS signal reproduction, various road conditions environment, signal is exported to signal playback module by computer, and signal playback module is converted into four groups of sine wave-shaped signals of correspondence four-wheel wheel speed curve data signal；
The output of described signal playback module connects the input of signal amplification module, four groups of sine wave-shaped signals amplify through signal amplification module gives rotating excitation field generation module, and rotating excitation field generation module is converted into four independent rotating excitation field signals four groups of sinusoidal waveform signals of telecommunication；Four independent rotating excitation field signal stimulus sensor modules, make sensor assembly export consistent with sine wave-shaped signal, real four-wheel wheel speed sensors signal；
The current signal of described sensor assembly output is converted into the voltage signal of standard, i.e. reproducing real vehicle ABS four-wheel wheel speed sensors waveform signal through signal conversion module, then flows to the ABS/ESP control system experimental bench of outside, for endurancing；
Described signal conversion module connects capture card, capture card reconnects computer, computer is by the standard voltage signal i.e. ABS four-wheel wheel speed signal after signal conversion module conversion, gathered by capture card and transfer back to computer, process the wheel speed curve that display collects, the truer four-wheel wheel speed curve data signal obtained with the endurancing pilot scale test of former vehicle calibrating compares and analyzes.
A kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system the most according to claim 1, it is characterised in that: described signal playback module is made up of the signal playback circuit of four groups of independences, and often group signal playback circuit has a road input and two-way to export；The input signal of signal playback module is the true four-wheel wheel speed curve data signal that the endurancing pilot scale test of vehicle calibrating obtains, four groups of output signals are sine wave-shaped signal, and the two-way output signal often organized is orthogonal signalling, i.e. by the often group signal playback circuit in computer control signal playback module, make a road output signal another road phase of output signal advanced or delayed 90 degree；So signal playback module has four tunnel inputs and the output of eight tunnels, and wherein every two-way constitutes one group of signal, totally four groups of output signals, the number of delivering letters amplification module.
A kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system the most according to claim 1, it is characterized in that: described signal amplification module is made up of the signal amplification circuit of four groups of independences, often group signal amplification circuit is made up of two paths of signals amplifying circuit, has two-way input and two-way to export；The output letter of signal playback circuit connects corresponding often group signal amplification circuit input.
A kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system the most according to claim 1, it is characterized in that: described rotating excitation field generation module includes underframe and four rotating magnetic field generators, described underframe is provided with chute, chute is slidably fitted with some columns, column is provided with sensor fixed support and magnetic field generator fixed support；Sensor assembly is fixedly mounted on sensor fixed support；Four described rotating magnetic field generators are fixedly mounted on magnetic field generator fixed support.
A kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system the most according to claim 4, it is characterised in that: each rotating magnetic field generator is made up of two coils, two iron cores and geometrical clamp；Two iron cores are fixed together by geometrical clamp, leave air gap between iron core, and two coils are connected respectively in the two-way output of two paths of signals amplifying circuit.
A kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system the most according to claim 4, it is characterized in that: on described sensor fixed support, have circular hole and slotted eye, sensor assembly is arranged in circular hole, and is fixed on sensor fixed support by slotted eye.
A kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system the most according to claim 6, it is characterised in that: described sensor assembly includes that four sensors, four sensors are connected with signal conversion module respectively.
A kind of real vehicle ABS four-wheel wheel speed sensors signal reproduction system the most according to claim 1, it is characterised in that: described signal conversion module is made up of four road signaling conversion circuits, and the output of four road signaling conversion circuits is all connected to the input of capture card；Described capture card 7 comprises at least four road analog input channels.
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| CN110320386A (en) * | 2019-06-06 | 2019-10-11 | 淮海工学院 | Multichannel list dual chip differential type wheel speed sensors test fixture and System and method for |
| CN112229433A (en) * | 2020-10-14 | 2021-01-15 | 江苏海洋大学 | Engine sensor testing tool, testing monitoring system and testing monitoring method |
| CN112268568A (en) * | 2020-10-14 | 2021-01-26 | 江苏海洋大学 | Engine sensor testing tool, testing system and testing method |
| CN112268567A (en) * | 2020-10-14 | 2021-01-26 | 江苏海洋大学 | Engine sensor detection tool, detection system and detection method |
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| CN110320386A (en) * | 2019-06-06 | 2019-10-11 | 淮海工学院 | Multichannel list dual chip differential type wheel speed sensors test fixture and System and method for |
| CN110320386B (en) * | 2019-06-06 | 2021-10-26 | 淮海工学院 | Multi-channel single-chip and double-chip differential wheel speed sensor testing tool, system and method |
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| CN112268567A (en) * | 2020-10-14 | 2021-01-26 | 江苏海洋大学 | Engine sensor detection tool, detection system and detection method |
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