CN106066408B - The three level wheel speed sensors based on brake process test System and method for - Google Patents
The three level wheel speed sensors based on brake process test System and method for Download PDFInfo
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- CN106066408B CN106066408B CN201610354935.9A CN201610354935A CN106066408B CN 106066408 B CN106066408 B CN 106066408B CN 201610354935 A CN201610354935 A CN 201610354935A CN 106066408 B CN106066408 B CN 106066408B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
- G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
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Abstract
The invention discloses a kind of, and the three level wheel speed sensors based on brake process test system, including operation console, computer, input module, PLC module, spindle motor module, two-dimensional movement platform module, brake module, sensor assembly, acquisition module and D.C. regulated power supply.The invention also discloses the test methods using aforementioned test system.Present system realizes the analysis of the dynamic detection and sensor mass of sensor variable signal in brake process, realize the main story of three level active wheel speed sensor signals and the directioin parameter detection of reversion, braking parameters detection, realize the differentiation to sensor signal power parameter, realize the adjusting to sensor and gear the air gap size, and by the detection to sensor signal come the size of discriminating sensor and gear the air gap.It realizes under the conditions of manually or automatically, by analysis brake information parameter, the directioin parameter of positive and negative rotation, comprehensive automatic detection sensor performance improves the safety of automobilism.
Description
Technical field
The invention belongs to automobile wheel speed sensor testing fields, and in particular to a kind of three level for automobile ABS are actively
Test system and test method of the formula wheel speed sensors in brake process.
Background technology
Wheel speed sensors are one important components of ABS system, and very important work is played in ensureing vehicle safety travel
With.With the improvement of people's living standards, people are also higher and higher to the safety of automobile and the requirement of comfort, in order to effective
The braking efficiency and braking safety of automobile are improved, system is generally equipped in the automobile product that typically now automobile vendor is produced
Dynamic anti-lock ABS system.The wheel speed sensors of performance constantly improve constantly update, and represent next-generation active wheel speed sensor
Three level wheel speed sensors more and more paid attention to and applied.
The existing technical solution to wheel speed sensors test has three classes：
1）, wheel speed sensors parameter detecting, such as：The automobile sensor detection device and utilization that 102564487 A of CN are announced
The method of its detection sensor performance, equipment include：Workbench, transmission system, clamping mechanism, air gap adjusting detection mechanism, control
System processed, data collecting system, Signal Analysis System realize that the sensor signal after stablizing to motor speed is acquired analysis
Test.Test parameter has phase, peak-to-peak value, high level, low level, rise time, fall time etc..
A kind of test system for automobile wheel speed sensor based on labview that 101963625 B of CN are announced, including meter
Calculation machine, prover, motor, electric machine controller, gear, feedback signal processing circuit, gpib bus, sensor, sensor signal
Processing circuit, capture card, three-dimensional movement platform, regulated power supply.Controller is sent commands to by computer, and control motor is by setting
Rotating speed operation is set, capture card acquires sensor signal, analyzes its maximum value, minimum value, frequency, period, period maximum value, period
Minimum value, circular error, duty ratio, duty cycle error, Airgap, lap air gap value etc..
《Automobile wheel speed sensor monitor station design based on LabVIEW》（Chen Yongliang, instrument and meter user, 2011,18
(5)）；Hardware platform, including mechanical module, electronic control module and computer module are described, is adopted by sensor test rack, data
The compositions such as collection and controller, computer, measure the period and amplitude of sensor signal.
A kind of abs sensor testboard that CN202281629 U are announced：Including monitoring and control unit, switch, DC power supply, oscillography
Device, rotational speed regulation frequency converter, sensor fixed seat and display device.The waveform sum number of sensor signal is tested using oscillograph
According to.
《Auto Wheel Speed Sensor detecting system design based on LabVIEW》（Luo Hao, electronic world, 2015
(13)）；Hardware system, including motor, data collecting card, automechanism, PC machine etc. are described, is acquired and is passed by data collecting card
Sensor signal tests the parameters such as peak-to-peak value, virtual value, frequency.
《Wheel speed sensors testboard bay brief analysis》（Hong Song, Jiamusi University's journal, 2015 (3)）；Describe wheel speed signal
It generates and control system takes turns speed control system by computer and servo amplifier etc. by the various processes of motor simulation vehicle wheel rotation
Component is realized, equal to the frequency in the case of sensor signal progress middling speed, waveform duty cycle, voltage, waveform by oscillograph
Once, waveforms amplitude parameter measurement.
The automobile wheel speed sensor testing and analysis system that 201819917 U of CN are announced：Including direct current generator, regulated power supply,
Gear ring, A/D capture cards etc. are detected the period and frequency of sensor signal.
The wheel speed sensors testing stand that 203241435 U of CN are announced：Including pedestal, motor, gear, oscillograph etc., pass through
Oscillograph acquires the waveform of sensor signal, the change rate of analysis waveform.
2）Three level wheel speed sensors signals are analyzed, such as：《The signal detection technique of vehicle wheel speed sensor and its application point
Analysis》（Xiao Shan, electronic production, 2015 (5)）；Describe the characteristics of signals of wheel speed sensors, wheel speed sensors three level signal week
The measurement of phase.
《The signal detection of vehicle wheel speed sensor and analysis》（Guo Fengyu, Zhang Lei, application of electronic technology, 2013,39
(6)）；System global structure is described, motion control, data acquisition, data processing, chart is shown, process control and data are protected
Deposit and play back etc..Describe the cycle parameter and duty cycle parameters measurement method in three level signal.
《Active wheel speed sensor brief analysis with directionality》（Hong Song, China's machinery, 2015 (4)）；Wheel is described
The principle of the active wheel speed sensor of direction of advance or direction of retreat, and band direction is collected on real vehicle using oscillograph
The oscillogram of property active wheel speed sensor, the brief analysis analytic method of the active wheel speed sensor with directionality.
3）ABS comprehensive experiment tables, such as：The Intelligent ABS synthetic performance experimental bench that 201207243 Y of CN are announced：Including power
Drive system, ABS brake fluid systems, data acquisition and processing system etc., the course of work, which is related to wheel speed sensors part, is
Analysis is acquired to the speed signal of sensor.
What 204010515 Y of CN were announced《Automobile ABS is demonstrated and experimental system》：Including holder, wheel, motor, become frequency modulation
Fast device, flying wheel, friction hub, fluted disc, wheel speed sensors etc. realize the braking simulation of multiple road attachment coefficient.
Existing wheel speed sensors test system there are the shortcomings that be mainly reflected in：
Can be only done various speed at the uniform velocity in the case of wheel speed sensors signal testing, the speed of sensor can only be tested
（Period, frequency）Signal, high current（Level）, low current（Level）, peak-to-peak value, virtual value, the parameters such as duty ratio, and cannot be right
Wheel speed sensors Dynamic Signal in brake process carries out analysis test, can not achieve to three level wheel speed sensors protocol signals
Test, be unable to main story and the reversion of discriminating sensor signal, be unable to the braking state of discriminating sensor signal, cannot differentiate biography
The power of sensor signal, is unable to the size etc. of discriminating sensor and gear the air gap, and test limitation is big.Therefore, one is designed
Kind can accurately test the working performance and its associated technical parameters of three level wheel speed sensors, the practical peace of wheel speed sensors
The good three level wheel speed sensors test system based on brake process of safety is most important when being used on vehicle, becomes
Urgent problem to be solved.
Invention content
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide it is a kind of based on brake process three
Level wheel speed sensors test system, solve young mobile wheel speed sensors i.e. three level active wheel speed sensors,
The analysis of the dynamic detection and sensor mass of sensor variable signal in brake process.
Another technical problem to be solved by this invention is to provide a kind of three level wheel speeds sensing based on brake process
Device test method, this method realize the main story of three level active wheel speed sensor signals and the directioin parameter detection of reversion, stop
Vehicle parameter detecting realizes the differentiation to sensor signal power parameter, realizes the tune to sensor and gear the air gap size
Section, and by the detection to sensor signal come the size of discriminating sensor and gear the air gap.It realizes manually or certainly
Under the conditions of dynamic, by analysis brake information parameter, the directioin parameter of positive and negative rotation, comprehensive automatic detection sensor performance improves vapour
The safety of vehicle operation.
The technical problem to be solved by the present invention is to what is realized by technical solution below.The present invention is that one kind is based on
Three level wheel speed sensors of brake process test system, its main feature is that：
The system includes operation console, and computer, input module, spindle motor module, two-dimensional movement are equipped on operation console
Console module, sensor assembly, acquisition module and brake module；
The computer by serial ports connect PLC module, input module connect PLC module input, PLC module it is defeated
Go out to be separately connected spindle motor module, two-dimensional movement platform module and brake module；The brake module and sensor assembly
Connection, sensor assembly are connect with acquisition module again, and acquisition module is connect with computer again；
The system is additionally provided with D.C. regulated power supply, D.C. regulated power supply connection PLC module and sensor assembly and is supplied for it
Electricity；
The sensor assembly include with directional information and brake information three level active wheel speed sensors, and
The sensor signal conversion circuit of wheel speed sensors connection, the wheel speed sensors are located on sensor stand；
The brake module includes hydraulic pump, hydraulic oil pipe system and caliper, on caliper be equipped with brake block and
Brake switch, brake switch are connect by signal wire with wheel speed sensors；
The spindle motor module includes spindle motor servo controller and spindle motor, on the main shaft of spindle motor
Gear and brake disc are installed, the brake disc is mounted between brake block, and the gear is mounted on the outer end of main shaft；
The two-dimensional movement platform module includes two-dimensional stage and the stepper motor that is attached thereto, stepper motor again with step
Stepper motor controller connects.
The three level wheel speed sensors of the present invention based on brake process test system, further preferred technology
Scheme is：The input module includes start button, stalling button, automatic mode and manual mode change-over switch, positive and negative rotation
Change-over switch, the air gap increasing button, the air gap reduce button, speed adjusting knob and brake button.
The three level wheel speed sensors of the present invention based on brake process test system, further preferred technology
Scheme is：The acquisition module uses capture card or oscillograph.
Three electricity based on brake process that the invention also discloses a kind of as described in any one of above technical scheme
The test method of flat wheel speed sensors test system, feature, this approach includes the following steps：
（1）Open equipment：Fuselage power switch is first turned on, system boot button is pressed, into operational mode is waited for, is opened
Computer sets trigger condition, sample rate, brake process parameter；
（2）Activation system is run：Automatic mode and manual mode change-over switch are converted to manual mode, press startup by
Button, presses the air gap increasing button or the air gap reduces button, makes the sensitive surface and target gear of automobile wheel speed sensor
Clearance distance be 0；
（3）Start brake process：Under manual mode, convert positive and negative rotation change-over switch, at this time spindle motor carry out rotate forward or
Reversion, governing speed knob adjust wheel speed, rotate clockwise and push the speed, and rotation counterclockwise reduces speed；It presses between air
Gap increasing button reduces button, corresponding to the clearance distance of target gear generations of the sensitive surface of automobile wheel speed sensor increase and
Reduce；System after brake button is pressed to brake, sensor output speed signal, brake signal, positive and negative rotaring signal, strong and weak signals,
Size of gaps signal；Automatic mode and manual mode change-over switch are converted to automatic mode, start button is pressed, gear is positive
Accelerate, simultaneous computer acquires the signal of wheel speed sensors, is shown, analyzing processing；Gear accelerates to after 34Km/h automatically
It brakes, in brake process, computer continues to acquire the signal of sensor, is shown, analyzing processing；After brake process,
Gear carries out positive to acceleration again, and in same accelerator, the signal of computer acquisition wheel speed sensors is shown, analyzed
Processing, accelerates to self-actuating brake after 80Km/h, and in brake process, computer continues to acquire the signal of wheel speed sensors, is shown
Show, analyzing processing；Acceleration, the brake process of 167Km/h, 230Km/h are carried out later, and what totally 4 processes compositions one accelerated follows
Ring；After circulation terminates, gear is reversely accelerated, and in accelerator, the signal of computer acquisition sensor is shown, divided
Analysis is handled, and accelerates to self-actuating brake after 34Km/h, and in brake process, computer continues to acquire the signal of wheel speed sensors, carries out
Display, analyzing processing；Likewise, reversed acceleration, brake process are also 34Km/h, 80Km/h, 167Km/h, 230Km/h totally 4
Process constitutes the cycle of an acceleration；It is reversed after circulation terminates, stepper motor action, make step-length of the two-dimensional stage according to setting
It is mobile, increase the air gap of wheel speed sensors and gear, enter forward direction, reversed acceleration, brake process again later, until empty
Gas gap reaches maximum value, and whole process terminates；
（4）Wheel speed sensors signal is acquired in real time, is shown, analyzing processing；Acquisition measures wheel speed sensors in real time
High/medium/low current signal, real-time display signal waveform, the curve that wheel speed and signal speed change over time；Computer-internal
Structure standard brake signal decision rule, including：Speed pulse signal, protocol signal, wheel speed difference signal, the wave number of teeth, brake letter
Number, positive and negative rotaring signal, strong and weak signals, size of gaps signal, judge that sensor tests whether qualification in standard brake process；
Stop button is pressed, system is out of service.
Compared with prior art, the beneficial effects of the invention are as follows：Realize three level active wheel speed sensor signals just
It passes and the detection of the directioin parameter of reversion, braking parameters detection, differentiation of the realization to sensor signal power parameter is realized to sensing
The adjusting of device and gear the air gap size, and by the detection to sensor signal come between discriminating sensor and gear air
The size of gap.It realizes under the conditions of manually or automatically, by analysis brake information parameter, the directioin parameter of positive and negative rotation, comprehensively certainly
Dynamic detection sensor performance, improves the safety of automobilism.
Description of the drawings
Fig. 1 is the hardware system block diagram of the present invention；
Fig. 2 is the operation console structural schematic diagram of the present invention；
Fig. 3 is the system brake process flow chart of the present invention.
Specific implementation mode
Below in conjunction with the accompanying drawings, it is further described through the specific implementation mode of the present invention, in order that being carried out to the present invention detailed
Illustrate, without constituting the limitation to right of the present invention.
Embodiment 1, a kind of three level wheel speed sensors test system based on brake process, as shown in Figure 1, including operation
Platform 10, input module 2, PLC module 3, spindle motor module 4, two-dimensional movement platform module 5, brake module 6, passes computer 1
Sensor module 7, acquisition module 8 and D.C. regulated power supply 9.
Computer 1 is the core of test system, is the host of software systems, as the three level wheel speeds based on brake process
The central control unit of sensor testing system, by serial ports connect PLC module 3, to PLC module 3 send control instruction, make be
System is run according to the operational process parameter of setting.
Simultaneous computer 1 connects acquisition module 8, and three level wheel speeds sensing is acquired by controlling capture card 81 or oscillograph 82
The signal of device 71 is transferred in computer 1, and the signal of acquisition is measured and analyzed by software, respectively with waveform, data
Sensor speed and protocol code signal are shown with graphic form, analyze the main story of three level active wheel speed sensors, 71 signal
Directional information parameter, brake information parameter with reversion, signal strength parameter, sensor and the size of gear the air gap are joined
Number, and determine whether standard brake signal, judge whether sensor 71 is qualified, while automatically saving test information.
Input module 2 connect PLC module 3 input, the input module 2 include start button 21, stop button 22,
Automatic mode reduces with manual mode change-over switch 23, positive and negative rotation change-over switch 24, the air gap increasing button 25, the air gap
Button 26, speed adjusting knob 27, brake button 28.To meet ergonomics, being conveniently operated, input module 2 is mounted on operation
On platform.Input module 2 is inputted to PLC module 3 and is instructed, and the operating mode i.e. automatic mode or manual mode of system is arranged, and is controlled
System operation processed.
Automatic mode and manual mode change-over switch 23 are transformed into automatic mode, automatic mode is opened, and system is according to soft
The parameter automatic running of part setting, the air gap increasing button 25, the air gap reduce button 26, speed adjusting knob at this time
27, brake button 28 is invalid.
Automatic mode and manual mode change-over switch 23 are transformed into manual mode, manual mode is opened, and console is used
2 button of input module is operated manually, and is pressed the air gap increasing button 25 or is reduced button 26, automobile wheel speed sensor 71
Sensitive surface generation corresponding to the clearance distance of target gear 43 increases and reduces.Governing speed knob 27 adjusts wheel speed, up time
Needle rotation is pushed the speed, and rotation counterclockwise reduces speed, speed adjustable range 0-230Km/h.Start button 21 is opened to system transmission
Dynamic instruction, presses system operation after start button 21.Brake button 28 sends brake instruction to system, after pressing brake button 28
System is braked.
PLC module 3 respectively with computer 1, input module 2, brake module 6, spindle motor module 4, two-dimensional movement platform
Module 5, D.C. regulated power supply 9 connect.PLC module 3 receives the control instruction of computer 1 and input module 2, output control brake
Module 6, spindle motor module 4, the co-ordination by setup program of two-dimensional movement platform module 5, i.e. spindle motor 42 are according to given
Speed rotates；Brake module 6 carries out brake control according to given order, and spindle motor 42 is made to slow down or stall；Two-dimensional movement is flat
Platform module 5 makes three level wheel speed sensors sensitive surfaces are corresponding to target wheel clearance distance to increase or reduce.
Brake module 6 connects PLC module 3 and sensor assembly 7.Brake module 6 includes hydraulic pump 61, hydraulic oil pipe system
62, caliper 63, brake block 64, brake disc 65 and brake switch 66.Brake block 64 and brake switch 66 are fixedly mounted on braking
On pincers 63, brake disc 65 is mounted on the main shaft of spindle motor 42.Brake module 6 receives the brake instruction of PLC module 3, uses
Brake executes system brake, and hydraulic pump 61 acts, and drives caliper 63 to act by hydraulic oil pipe system 62, execution was braked
Journey.Caliper 63 acts brake switch 66 when acting, send a brake signal to wheel speed sensors 71, sensor 71 exports
Occurs the parameter information of reflection brake in signal.Caliper 63, brake block 64, brake disc 65 and brake switch 66 are mounted on operation
Above platform.Need to install additional hood on the outside of module to provide safety guarantee.The operational process of brake module 6 is set in systems, including
Operating and brake two states.When in operating condition, brake inside caliper 63 and brake block 64 are far from brake disc 65；When
When in braking state, caliper 63 and brake block 64 are closed and execute brake instruction.
Spindle motor module 4 connects PLC module 3.Spindle motor module 4 includes spindle motor servo controller 41, main shaft
Motor 42, and the gear 43 on 42 axis of spindle motor.PLC module 3 sends control signal and gives spindle motor SERVO CONTROL
Device 41, spindle motor servo controller 41 control spindle motor 42 and are rotated forward or backwards.Brake module 6 and spindle motor
41 co-ordination of servo controller controls the brake process of spindle motor 42, brakes by adjusting different rotating speeds.Main shaft
The rotation of motor 42 drives the gear 43 on 42 axis of spindle motor to rotate, and gear 43 incudes three level wheel speed sensors 71 and generates letter
Number.It is required that spindle motor 42 can provide the forward and reverse wheel speed of 320Km/h in 30s for system.For ease of installing and seeing
It examines, spindle motor 42, gear 43 are similarly installed above operation console.
Two-dimensional movement platform module 5 connects PLC module 3.Two-dimensional movement platform module 5 includes two-dimensional stage 53, stepping electricity
Machine 52, controllor for step-by-step motor 51.PLC module 3 sends control signal to controllor for step-by-step motor 51, and controller 51 controls stepping
Motor 52 run, drive two-dimensional stage 53 spindle motor 42 movement axis direction generate movement, change wheel speed sensors 71 with
The air gap of gear 43.It needs to carry out school zero to the air gap before system commencement of commercial operation, school zero is by the air gap button 25,26
Control adjusts the air gap to 0 point by increasing, reducing air gap operational.For protection wheel speed sensors 71 and gear 43, it is
System should automatically record zero parameter of the air gap school, while install limit switch in two-dimensional movement platform 53, with this given safety
Moving region, when adjusting the air gap beyond safety zone, the air gap increasing button 25 and reduction button 26 fail.For just
In operation and measuring, two-dimensional stage 53 and stepper motor 52 are mounted on above operation console,
Sensor assembly 7 is connect with brake module 6, acquisition module 8 and D.C. regulated power supply 9.
Sensor assembly 7 includes the three level active wheel speed sensors 71 with directional information and information of braking, sensing
Device holder 72, sensor signal conversion circuit 73.Wheel speed sensors 71 can be young mobile wheel speed sensors, can be simultaneously
The signals such as wheel speed signal, direction signal, brake signal, signal strength, the air gap size are exported, further include high, medium and low level
Signal, these signals are included in sensor protocol data signal.Wheel speed sensors 71 are installed on sensor stand when test
On 72, sensor stand 72 is fixed in two-dimensional stage 53, and wheel speed sensors 71 are opposite with 43 front of gear or side, work as gear
Wheel speed sensors 71 are incuded when 43 positive and negative rotation, and 71 output signal of wheel speed sensors, signal is made to carry directional information.It was braking
Cheng Zhong, the action of brake switch 66 give wheel speed sensors 71 and control signal, the output of 71 brake signal of wheel speed sensors.Pass through two dimension
The movement of platform 53 changes the air gap between wheel speed sensors 71 and gear 43, reflects that the signal of wheel speed sensors 71 is strong
Weak, the air gap size signal changes.The electric current that sensor signal conversion circuit 73 exports wheel speed sensors 71 is believed
Number it is converted into voltage signal, gives acquisition module 8.
Acquisition module 8 is connect with sensor assembly 7, computer 1, and acquisition module 8 uses capture card 81 or oscillograph 82.Meter
Calculation machine 1 control capture card 81 or oscillograph 82 acquire the output signal of wheel speed sensors 71 and passing in computer 1 shown,
Analysis and processing.
D.C. regulated power supply 9 connects PLC module 3 and sensor assembly 7, and work is provided for PLC module 3 and sensor assembly 7
Power supply needed for making.
Embodiment 2, a kind of three level wheel speed sensors test system and test methods based on brake process, the test method
PLC module 3 is sent commands to by computer 1 and input module 2,3 output signal of PLC module controls spindle motor module 4, two
Tie up mobile platform module 5 and brake module 6, by setup program co-ordination.
3 output signal of PLC module controls the brake instruction that the brake module 6 in spindle motor module 4 receives PLC module 3,
Execution system is braked, and hydraulic pump 61 acts, and is driven caliper 63 to act by hydraulic oil pipe system 62, is executed brake process.System
So that brake switch 66 is acted when dynamic 63 action of pincers, sends a brake signal to wheel speed sensors 71, wheel speed sensors 71 export
Occurs the parameter information of reflection brake in signal.I.e. spindle motor 42 is rotated according to given speed；Brake module 6 is according to given life
Order carries out brake control, and spindle motor 42 is made to slow down or stall；Two-dimensional movement platform module 5 makes three level wheel speed sensors 71 feel
Answer face is corresponding to the clearance distance of target gear 43 to increase or reduce.
Simultaneously, PLC module 3 sends control signal to spindle motor servo controller 41, spindle motor servo controller
41 control spindle motors 42 are rotated forward or backwards.Brake module 6 and 41 co-ordination of spindle motor servo controller, control
The brake process of spindle motor 42 processed, brakes by adjusting different rotating speeds.The rotation of spindle motor 42 drives spindle motor
Gear 43 on 42 axis rotates, and gear 43 incudes three level wheel speed sensors 71 and generates signal.Identical, PLC module 3 sends control
Signal processed controls stepper motor 52 and runs to controllor for step-by-step motor 51, controller 51, drives two-dimensional stage 53 in spindle motor
42 movement axis direction generates movement, changes the air gap of wheel speed sensors 71 and gear 43.It is needed before system commencement of commercial operation
School zero is carried out to the air gap, school zero is controlled by the air gap button 25,26, is adjusted by increasing, reducing air gap operational
The air gap of wheel speed sensors 71 and gear 43 is to 0 point.
When 43 forward and reverse rotation of gear, gear 43 incudes wheel speed sensors 71, makes 71 output signal of wheel speed sensors, believes
Number carry directional information.In brake process, the action of brake switch 66 gives wheel speed sensors 71 and controls signal, wheel speed sensors
71 brake signals export.Change the air gap between wheel speed sensors 71 and gear 43 by the movement of two-dimensional stage 53, instead
The signal of the signal strength, the air gap size of reflecting wheel speed sensors 71 changes.Sensor signal conversion circuit 73 is wheel
The current signal that fast sensor 71 exports is converted into voltage signal, gives acquisition module 8.Computer 1 controls capture card 81 or shows
Wave device 82 acquires the output signal of wheel speed sensors 71 and passes in computer 1 and shown, analyzed and handled.
The structure of operation console is as shown in Figure 2：Computer display is put in the top of operation console, and input module 2 is mounted on
On operation console operation panel；Stepper motor 52 is mounted on above operation console, and two-dimensional stage 53 is mounted on stepper motor 52, by step
The driving movement of stepper motor 52；Sensor stand 72 is mounted in two-dimensional stage 53, and wheel speed sensors 71 are mounted on sensor stand
It is opposite with gear front or side on 72, pass through the gap of the mobile change wheel speed sensors 71 and gear 43 of two-dimensional stage 53
Distance；Spindle motor 42 is mounted on the top of stepper motor 52, and gear 43 is mounted on 42 axis of spindle motor, the rotation of motor 42
Band moving gear 43 rotates；Brake disc 65 is mounted on the axis of spindle motor 42 simultaneously, and brake block 64, brake switch 66 are mounted on system
On dynamic pincers 63, caliper 63 be mounted on 65 top of brake disc, the action of caliper 63 drives brake block 64, brake switch 66 to act,
Brake block 64, which clamps brake disc 65, makes spindle motor 42 brake, and brake switch 66 gives wheel speed sensors 71 signal.
Computer 1, PLC module 3, spindle motor servo controller 41, controllor for step-by-step motor 51, hydraulic pump 61, hydraulic pressure
Oil piping system 62, sensor signal conversion circuit 73, power module 9, acquisition module 8 all can be placed on the lower part of operation console.
Described in the present embodiment based on brake process three level wheel speed sensors test system test method include with
Lower step：
1）Open equipment：Fuselage power switch is first turned on, system boot button is pressed, into operational mode is waited for, is opened
Computer 1 sets trigger condition, sample rate, the parameters such as brake process.
2）Activation system is run：Automatic mode and manual mode change-over switch 23 are converted to manual mode, startup is pressed
Button 21, presses the air gap increasing button 25 or the air gap reduces button 26, makes the sensitive surface of automobile wheel speed sensor 71
Clearance distance with target gear 43 is 0.
3）Start brake process:Under manual mode, positive and negative rotation change-over switch 24 is converted, spindle motor 42 is rotated forward at this time
Or reversion, governing speed knob 27 adjust wheel speed, rotate clockwise and push the speed, rotation counterclockwise reduces speed.Press sky
Gas gap increasing button 25 reduces button 26, the sensitive surface of automobile wheel speed sensor 71 and the clearance distance phase of target gear 43
It should occur to increase and reduce.System after brake button 28 is pressed to brake, 71 output speed signal of wheel speed sensors, brake signal,
Positive and negative rotaring signal, strong and weak signals, size of gaps signal etc..Automatic mode and manual mode change-over switch 23 are converted to automatic mold
Formula presses start button 21, and a complete brake process is as shown in figure 3, the positive acceleration of gear 43, simultaneous computer 1 acquire
The signal of wheel speed sensors 71 is shown, analyzing processing.Gear accelerates to self-actuating brake after 34Km/h, in brake process, meter
Calculation machine 1 continues to acquire the signal of wheel speed sensors 71, is shown, analyzing processing.After brake process, gear carries out just again
To acceleration, in same accelerator, computer 1 acquires the signal of wheel speed sensors 71, is shown, analyzing processing, accelerates
Self-actuating brake after to 80Km/h, in brake process, computer 1 continues to acquire the signal of wheel speed sensors 71, is shown, is analyzed
Processing.Acceleration, the brake process of 167Km/h, 230Km/h are carried out later, and totally 4 processes constitute the cycle of an acceleration.Cycle
After, gear is reversely accelerated, and in accelerator, computer 1 acquires the signal of wheel speed sensors 71, is shown, is divided
Analysis is handled, and accelerates to self-actuating brake after 34Km/h, and in brake process, computer 1 continues to acquire the signal of wheel speed sensors 71, into
Row display, analyzing processing.Likewise, it is reversed accelerate, brake process is also 34Km/h, 80Km/h, 167Km/h, 230Km/h totally 4
A process constitutes the cycle of an acceleration.It is reversed after circulation terminates, stepper motor 52 act, make two-dimensional stage 53 according to setting
Step-length movement, increase wheel speed sensors 71 and gear 43 the air gap, later again enter forward direction, reversed acceleration, brake
Process, until the air gap reaches maximum value, whole process terminates.
4）Wheel speed sensors signal is acquired in real time, is shown, analyzing processing.Acquisition measures wheel speed sensors 71 in real time
High/medium/low current signal, real-time display signal waveform, the curve that wheel speed and signal speed change over time.In computer 1
Portion builds standard brake signal decision rule, including：Speed pulse signal, protocol signal, wheel speed difference signal, the wave number of teeth, brake
Signal, positive and negative rotaring signal, strong and weak signals, size of gaps signal judge test of the wheel speed sensors 71 in standard brake process
It is whether qualified.Stop button is pressed, system is out of service.
Claims (4)
1. a kind of three level wheel speed sensors based on brake process test system, it is characterised in that：
The system includes operation console, and computer, input module, spindle motor module, two-dimensional movement platform are equipped on operation console
Module, sensor assembly, acquisition module and brake module；
The computer connects PLC module by serial ports, and input module connects the input of PLC module, the output point of PLC module
It Lian Jie not spindle motor module, two-dimensional movement platform module and brake module；The brake module is connect with sensor assembly,
Sensor assembly is connect with acquisition module again, and acquisition module is connect with computer again；
The system is additionally provided with D.C. regulated power supply, D.C. regulated power supply connection PLC module and sensor assembly and powers for it；
The sensor assembly includes three level active wheel speed sensors and wheel speed with directional information and information of braking
The sensor signal conversion circuit of sensor connection, the wheel speed sensors are located on sensor stand；
The brake module includes hydraulic pump, hydraulic oil pipe system and caliper, and brake block and brake are equipped on caliper
Switch, brake switch are connect by signal wire with wheel speed sensors；
The spindle motor module includes spindle motor servo controller and spindle motor, is installed on the main shaft of spindle motor
There are gear and brake disc, the brake disc to be mounted between brake block, the gear is mounted on the outer end of main shaft；
The stepper motor that the two-dimensional movement platform module includes two-dimensional stage and is attached thereto, stepper motor are electric with stepping again
Machine controller connects.
2. the three level wheel speed sensors according to claim 1 based on brake process test system, which is characterized in that institute
The input module stated include start button, stalling button, automatic mode and manual mode change-over switch, positive and negative rotation change-over switch,
The air gap increasing button, the air gap reduce button, speed adjusting knob and brake button.
3. the three level wheel speed sensors according to claim 1 based on brake process test system, which is characterized in that institute
The acquisition module stated uses capture card or oscillograph.
4. a kind of test method of the three level wheel speed sensors test system based on brake process as claimed in claim 2,
It is characterized in that, this approach includes the following steps：
（1）Open equipment：Fuselage power switch is first turned on, system boot button is pressed, into operational mode is waited for, opens and calculates
Machine, setting trigger condition, sample rate, brake process parameter；
（2）Activation system is run：Automatic mode and manual mode change-over switch are converted to manual mode, start button is pressed,
It presses the air gap increasing button or the air gap reduces button, make between the sensitive surface of automobile wheel speed sensor and target gear
Stand-off distance is from being 0；
（3）Start brake process：Under manual mode, positive and negative rotation change-over switch is converted, spindle motor carries out forward or reverse at this time,
Governing speed adjusting knob adjusts wheel speed, rotates clockwise and pushes the speed, and rotation counterclockwise reduces speed；Press the air gap
Increasing button reduces button, and the generation corresponding to the clearance distance of target gear of the sensitive surface of automobile wheel speed sensor increases and subtracts
It is small；System is braked after pressing brake button, wheel speed sensors output speed signal, brake signal, positive and negative rotaring signal, strong and weak letter
Number, size of gaps signal；Automatic mode and manual mode change-over switch are converted to automatic mode, start button, gear are pressed
Forward direction accelerates, and simultaneous computer acquires the signal of wheel speed sensors, is shown, analyzing processing；After gear accelerates to 34Km/h
Self-actuating brake, in brake process, computer continues to acquire the signal of wheel speed sensors, is shown, analyzing processing；Brake process
After, gear carries out positive acceleration again, in same accelerator, the signal of computer acquisition wheel speed sensors, shown,
Analyzing processing, accelerates to self-actuating brake after 80Km/h, and in brake process, computer continues to acquire the signal of wheel speed sensors, into
Row display, analyzing processing；Acceleration, the brake process of 167Km/h, 230Km/h are carried out later, and totally 4 processes constitute an acceleration
Cycle；After circulation terminates, gear is reversely accelerated, and in accelerator, the signal of computer acquisition wheel speed sensors carries out
Display, analyzing processing, accelerate to self-actuating brake after 34Km/h, and in brake process, computer continues to acquire the letter of wheel speed sensors
Number, it is shown, analyzing processing；Likewise, reversed acceleration, brake process are also 34Km/h, 80Km/h, 167Km/h, 230Km/
Totally 4 processes constitute a cycle accelerated to h；It is reversed after circulation terminates, stepper motor action, make two-dimensional stage according to setting
Step-length movement, increase wheel speed sensors and gear the air gap, later again enter forward direction, reversed acceleration, brake process,
Until the air gap reaches maximum value, whole process terminates；
（4）Wheel speed sensors signal acquire in real time, is shown, analyzing processing；The height of the wheel speed sensors of acquisition measurement in real time/
Medium/low current signal, the curve that real-time display signal waveform, wheel speed and signal speed change over time；Computer-internal is built
Standard brake signal decision rule, including：Speed pulse signal, protocol signal, wheel speed difference signal, the wave number of teeth, brake signal, just
Reverse signal, strong and weak signals, size of gaps signal judge that wheel speed sensors test whether qualification in standard brake process；
Stop button is pressed, system is out of service.
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| CN108241071A (en) * | 2016-12-23 | 2018-07-03 | 大陆汽车电子（连云港）有限公司 | There are the test system and method for the velocity sensor of angle detecting |
| CN112162121A (en) * | 2020-09-28 | 2021-01-01 | 湖南准联传感器有限公司 | Universal electrical tester for sensor |
| CN114428179A (en) * | 2020-09-29 | 2022-05-03 | 中国石油化工股份有限公司 | Off-line simulation inspection method and system for rotating speed probe |
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