CN102645631A - Automobile key switch testing system and testing method - Google Patents
Automobile key switch testing system and testing method Download PDFInfo
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- CN102645631A CN102645631A CN2012101322427A CN201210132242A CN102645631A CN 102645631 A CN102645631 A CN 102645631A CN 2012101322427 A CN2012101322427 A CN 2012101322427A CN 201210132242 A CN201210132242 A CN 201210132242A CN 102645631 A CN102645631 A CN 102645631A
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Abstract
The invention discloses an automobile key switch testing system and a testing method. The automobile key switch testing system comprises a mechanical portion and an electric portion (36), the electric portion (36) consists of an industrial control computer (1), a multifunctional data acquisition card (2), a first stepper motor driver (3), a first stepper motor (4), a relay (5), a first direct-current stabilized voltage supply (6), a pressure sensor (7), a signal interference suppression and filter circuit (8), a millivolt transmitter (9), a second stepper motor driver (10), a second stepper motor (11), a third stepper motor driver (12), a third stepper motor (13), a fourth stepper motor driver (14), a fourth stepper motor (15), an amplifier (16) and a second direct-current stabilized voltage supply (17). The invention further provides a method for testing performances of an automobile key switch by the aid of the automobile key switch testing system.
Description
Technical field
The present invention relates to a kind of proving installation of testing automobile keyswitch performance, more particularly, the present invention relates to the method for testing of the testing automobile keyswitch performance of a kind of automobile keyswitch test macro and employing automobile keyswitch test macro.
Background technology
The Along with people's growth in the living standard, people are increasing to the demand of vehicle, and quality and the security to automobile simultaneously had higher requirement.The automobile keyswitch is one of electrical equipment original paper important in the car, and the quality of its performance directly influences vehicle performance.So before the car load assembling, need test, whether reach requirement with mechanical property and the electric property of judging switch to the automobile keyswitch.
In the prior art, the testing automobile keyswitch adopts manual testing and pneumatic test usually.Manual testing's method is: the automobile keyswitch is inserted in the circuit of stabilized voltage supply and light emitting diode; Through operating personnel to switch press; The light on and off of observing light emitting diode come the hand-kept switch data, and this kind method has not only improved the test duration, has also increased the enterprises using the labor cost.Pneumatic means is accomplished the action of button through cylinder, because pneumatic means is the control system of open loop, can't accurately control the size of the stroke and the loading force of push switch, very easily causes the damage of switch, influences product quality.
It is high that automaticity is badly in need of in goods producer and car load assembling enterprise thereof, the test platform of system stability, and testing requirements is specific as follows:
1. new testing requirements can be simulated the operation of staff to keyswitch fully, and the maximum, force of on-off action point can not be greater than setting value.
2. new testing requirements can display switch mechanical property and electric property, and can the display switch mechanical property change the peak value and the valley of part.
3. new testing requirements can judge automatically whether vehicle switch is qualified.
4. new testing requirements can be preserved image, the data of experiment.
5. new testing requirements can be printed laboratory report.
Summary of the invention
Technical matters to be solved by this invention is to have overcome the problem that prior art exists, and a kind of automobile keyswitch test macro is provided, and a kind of method that adopts automobile keyswitch test macro to come testing automobile keyswitch performance also is provided simultaneously.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize: described automobile keyswitch test macro is by mechanical part and electric part (36).Described electric part comprises that model is the industrial control computer of IPC-610L; Model is the multifunctional data acquisition card of 8361AN; Model is No. 1 stepper motor driver of DCM4010; Model is 28000 No. 1 stepper motor; Model is the relay of SRD-S-112D; Model is No. 1 D.C. regulated power supply of SKD6010D; Pressure transducer; Suppressing signal disturbs and filtering circuit; Model is the millivolt transmitter of FD-3; Model is No. 2 stepping electrical equipment drivers of DCM4010; Model is 35000 No. 2 stepper motors; Model is No. 3 stepper motor drivers of DCM4010; Model is 35000 No. 3 stepper motors; Model is No. 4 stepper motor drivers of DCM4010; Model is 35000 No. 4 stepper motors; Model is the amplifier of AM-T-V100/U5 and No. 2 D.C. regulated power supplies that model is SKD3010D.
Described model is to be equipped with in the industrial control computer of IPC-610L that switch pressure and forward voltage curve display module, data recordin module, test parameter are provided with module, key scroll selects peak value and valley display module, automobile keyswitch qualification determination module, three-dimensional guide rail mechanism position adjusting type modules, button reset motor module, data and the image of module, switch machinery performance change part to preserve module, data and image call module and test report print module.
Multifunctional data acquisition card is inserted in the pci card groove of industrial control computer that model is IPC-610L; Model is that the logical signal output port DO0, logical signal output port DO1 of the multifunctional data acquisition card of 8361AN adopts the three-core shielding line to be connected input port PUL, input port DIR and input port ENA on No. 1 stepper motor driver that model is DCM4010 successively with logical signal output port DO2, and model is that port OA+, port OA-, port OB+ and the port OB-on No. 1 stepper motor driver of DCM4010 is that port A+, port A-, port B+ on 28000 No. 1 stepper motor is connected with port B-electric wire with model successively.Model is that the logical signal output port DO3, logical signal output port DO4 of the multifunctional data acquisition card of 8361AN adopts the three-core shielding line to be connected input port PUL, input port DIR and input port ENA on No. 2 stepper motor drivers that model is DCM4010 successively with logical signal output port DO5, and model is that port OA+, port OA-, port OB+ and the port OB-on No. 2 stepper motor drivers of DCM4010 is that port A+, port A-, port B+ on 35000 No. 2 stepper motors is connected with port B-electric wire with model successively.Model is that the logical signal output port DO6, logical signal output port DO7 of the multifunctional data acquisition card of 8361AN adopts the three-core shielding line to be connected input port PUL, input port DIR and input port ENA on No. 3 stepper motor drivers that model is DCM4010 successively with logical signal output port DO8, and model is that port OA+, port OA-, port OB+ and the port OB-on No. 3 stepper motor drivers of DCM4010 is that port A+, port A-, port B+ on 35000 No. 3 stepper motors is connected with port B-electric wire with model successively.Model is that the logical signal output port DO9, logical signal output port DO10 of the multifunctional data acquisition card of 8361AN adopts the three-core shielding line to be connected input port PUL, input port DIR and input port ENA on No. 4 stepper motor drivers that model is DCM4010 successively with logical signal output port DO11, and model is that port OA+, port OA-, port OB+ and the port OB-on No. 4 stepper motor drivers of DCM4010 is that port A+, port A-, port B+ on 35000 No. 4 stepper motors is connected with port B-electric wire with model successively.Model is that No. 1 stepper motor driver, the model of DCM4010 is that No. 2 stepping electrical equipment drivers, the models of DCM4010 are that No. 3 stepper motor drivers and the model of DCM4010 is that port GND and port Vdc on No. 4 stepper motor drivers of DCM4010 is that port GND on No. 1 D.C. regulated power supply of SKD6010D is connected with port VCC by two core shielding lines and model respectively.Model is that the multifunctional data acquisition card logical signal output terminal DO15 employing single-core shielding line connection model of 8361AN is the pilot angle of the relay of SRD-S-112D; Model is that the port DGND of the multifunctional data acquisition card of 8361AN is the input end GND of the relay of SRD-S-112D through single condctor connection model, and model is that the signal output part Out1 of the relay of SRD-S-112D is connected to the input end of analog signal AI1 that model is the multifunctional data acquisition card of 8361AN through single-core shielding line; Model is that the port Out2 of the relay of SRD-S-112D is that the port SI+ of the amplifier of AM-T-V100/U5 is connected through single-core shielding line and model; Model is that the port SO+ of the amplifier of AM-T-V100/U5 is connected to the input end of analog signal AI2 that model is the multifunctional data acquisition card of 8361AN through single-core shielding line, and model is that to adopt twin-core shielding line and model be that the port VCC of No. 2 D.C. regulated power supplies of SKD3010D is connected with port GND to port VCC and the port GND of the amplifier of AM-T-V100/U5.The output port signal of pressure transducer+with output port signal-successively with suppress that signal disturbs and the input port signal of filtering circuit+with input port signal-link to each other; Suppress that signal disturbs and the output port signal of filtering circuit+, the output port excitation of pressure transducer+, the output port excitation of pressure transducer-with the output port shielding of pressure transducer successively with model be FD-3 the corresponding input port signal of millivolt transmitter+, the input port excitation+, input port excitation-with input port shields and is connected; Model is that output port V0 and the model of the millivolt transmitter of FD-3 is that the input end of analog signal mouth AI0 single-core shielding line of the multifunctional data acquisition card of 8361AN links to each other, and model is that the port GND and the portmask of millivolt transmitter of FD-3 meets the port GND that model is No. 1 D.C. regulated power supply of SKD6010D.
The method step of described employing automobile keyswitch test system and test automobile keyswitch performance is following:
1. tested automobile keyswitch is installed on the switch anchor clamps, operation three-dimensional guide rail adjusting module and button reset motor module are adjusted tested automobile keyswitch to the right place, and promptly contact and tested automobile keyswitch are at a distance of 1mm.
2. at test parameter maximum pressure and the range of setting click switch in the module is set, the variation range of the threshold value that switch is qualified is judged in the conduct of importing tested automobile keyswitch mechanical property change part peak value and valley; Utilize key scroll to select module to select high speed, middling speed or low speed option, key scroll is 15mm/min during high speed, and key scroll is 10mm/min during middling speed, and key scroll is 5mm/min during low speed.
3. when beginning to test to image demonstration, data recording, qualified products whether, pre-set parameter and model be the multifunctional data acquisition card initialization of 8361AN.
4. automobile keyswitch test macro carries out the switch click action; Model is the multifunctional data acquisition card high speed acquisition data of 8361AN simultaneously; Testing software through being installed in the industrial control computer that model is IPC-610L accomplishes data processing and peaking and valley, shows pressure curve and forward voltage curve and peak value display and valley in switch machinery performance change peak value and valley display module partly;
(1) described data processing is meant:
A. data rough handling:
After contact touches tested automobile keyswitch; Model is the stepping each time of 28000 No. 1 stepper motor; Model is that the multifunctional data acquisition card of 8361AN can both be gathered n data on this position; N＜8192, the test procedure that is installed in model and is in the industrial control computer of IPC-610L is averaged to n the pressure data of gathering, then n pressure data successively with mean value do poor; If difference less than 3 times mean square deviation, then leaves at this moment stepping position and mean value in the internal memory in; Otherwise, if difference greater than 3 times mean square deviation, then this value is played and is removed, and the n-1 number is averaged, by that analogy, stepping position that at last will this moment leaves in the internal memory with rational mean value.
B. data secondary treating:
After the button process finishes, be installed in model and be testing software in the industrial control computer of IPC-610L and all data that deposit internal memory in the data rough handling in are carried out secondary data handle, the continuously normal observation data in front is a foundation in the internal memory to read; Set up the least square polynomial expression, postpone the observation data estimated value of carving for the moment outward, with the measured data in this moment do poor; Whether the identification difference surpasses given thresholding δ; δ is a 3-5 mean square deviation doubly, thinks that then this observation data is suspicious exceptional value if surpass thresholding, and it is rejected; And substitute it, otherwise be normal value with estimated value; Usually get 4 the continuously normal observation datas in front, adopt the single order polynomial expression to calculate:
A. ask for the young waiter in a wineshop or an inn Cheng Fangcheng of observed reading
The test curve of pressure belongs to linearity curve, from internal memory, takes out one group of pressure data (x
i, y
i), x
iFor model is the stroke of 28000 No. 1 stepper motor stepping the i time, y
iFor model is the switch force value of the i time actual measurement of 28000 No. 1 stepper motor stepping, set up least-squares line equation y=f (x)=Ax+B, A, B asks A, B coefficient for the coefficient of the equation of building, must the assurance equation
Be minimum value, make E that (A, B) partial derivative to A and B is zero, promptly
With
Can get thus
Can obtain A, B by this set of equations, fitting a straight line can satisfy E (A, the condition of minimum B).
B. judge whether observed reading is reliable constantly in back one
Through fitting a straight line, obtain the i estimated value of observation data constantly
y
iBe i measured value constantly, observe
Whether set up,, then think y if set up
iBe normal value, otherwise y
iBe exceptional value, and substitute it, open up the deposit data of new internal memory after at last wherein, so that switch pressure and forward voltage curve display module are called this internal storage data when showing curve secondary treating with the estimated value after the match.
(2) the described peak value and the valley of switch machinery performance change part asked is meant:
When the peak value of asking switch machinery performance change part and valley, testing software has used the mathematical thought of differentiate, through the method the peak value and the valley of switch machinery performance change part is accurately obtained:
Take out (x successively with having stroke and force value in the internal memory after the data secondary treating
m, y
m) ... (x
k, y
k) ... (x
n, y
n), m, k, n represent that model is No. 1 stepper motor step number in the open and close process of 28000, and x is a stroke, and y is a force value, at point (x
K+1, y
K+1) and (x
k, y
k) between slope do
At point (x
K+, y
2k) and (x
K+1, y
K+1) between slope do
k
I+1* k
I+2＜0, (x then
K+1, y
K+1) must be by being asked a little; Can obtain four points according to this method; Be switch peak point and valley point when pressing, peak point and valley point during switch bounce, the y value of two points when relatively pressing; And the y value of two somes during resilience, can confirm the peak value and the valley of switch machinery performance change part.
5. the threshold value with peak value and valley and input before contrasts; If in threshold range; Then eject dialog box and point out that green light lights on the qualified and automobile keyswitch qualification determination module of tested automobile keyswitch, otherwise point out the red light on defective and the automobile keyswitch qualification determination module to light;
6. preserve module and test report print module through data and image behind the EOT and carry out data and preserve with test report and print, on the test report display switch mechanical property change peak value and valley, experimental image partly and write down tested automobile keyswitch whether qualified.
Compared with prior art the invention has the beneficial effects as follows:
1. automobile keyswitch test macro of the present invention adopts and suppresses circuit, the filtering circuit that signal disturbs, filtering common mode interference effectively and high frequency interference; Through the data processing technique in the software, to the abnormality value removing of signal, and replace with its estimated value, the former test signal characteristic of extraction that these two kinds of methods are authentic and valid has improved the accuracy of test data.
2. the data of the detection, record that automobile keyswitch test macro of the present invention can automatically be accomplished the automobile keyswitch in the test process, show in the test process switch pressure curve and change in voltage curve and can accomplish peak value and the valley mark that automobile keyswitch mechanical property changes part, the tester is come into plain view to automobile keyswitch performance.
3. automobile keyswitch test macro of the present invention can be preserved, call experimental data and experimental image, can print laboratory report, can finish the back in experiment and judge automatically whether tested automobile keyswitch is qualified.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 1 is that the structure of automobile keyswitch test macro of the present invention is formed synoptic diagram;
Fig. 2 is the structural principle schematic block diagram of the electric part in the automobile keyswitch test macro of the present invention;
Fig. 3 is the schematic block diagram of annexation of annexation and stepper motor driver and each stepper motor of multifunctional data acquisition card and stepper motor driver in the automobile keyswitch test macro of the present invention;
Fig. 4 is the schematic block diagram of multifunctional data acquisition card, relay and amplifier annexation in the automobile keyswitch test macro of the present invention;
Fig. 5 is the schematic block diagram of the annexation between pressure transducer, inhibition signal interference and filtering circuit, millivolt transmitter and the multifunctional data acquisition card in the automobile keyswitch test macro of the present invention;
Fig. 6 is that the inhibition signal in the automobile keyswitch test macro of the present invention disturbs and the electrical schematic diagram of filtering circuit;
Fig. 7 is the FB(flow block) of the method for employing automobile keyswitch test system and test automobile keyswitch performance of the present invention;
Fig. 8 is the curve map of the measurement result of employing automobile keyswitch test macro of the present invention and method of testing;
Among the figure: 1. industrial control computer, 2. multifunctional data acquisition card, No. 3.1 stepper motor drivers, No. 4.1 stepper motors, 5. relay, No. 6.1 D.C. regulated power supplies; 7. pressure transducer 8. suppresses signal and disturbs and filtering circuit, 9. millivolt transmitter, No. 10.2 stepping electrical equipment drivers, No. 11.2 stepper motors; 12.3 number stepper motor driver, No. 13.3 stepper motors, No. 14.4 stepper motor drivers, No. 15.4 stepper motors, 16. amplifiers; 17.2 number D.C. regulated power supply, 18.X axis rail, 19.X axis rail slide block, 20.Y axis rail frame, 21.Y axial filament thick stick; 22.Y axis rail, 23.Y axis rail slide block, 24.Z axis rail reinforcement, 25.Z axis rail slide block, 26.Z axis rail; 27.Z the axis rail frame, 28.Z axial filament thick stick, 29. switch anchor clamps, 30. contacts, 31. screw mandrels; 32. nut, 33. pressure transducer fixed stations, 34. solid supports, 35. worktable, 36. electric parts.
Embodiment
Below in conjunction with accompanying drawing the present invention is explained in detail:
Consult Fig. 1 and Fig. 2, automobile keyswitch test macro is made up of mechanical part and electric part 36.
Described mechanical part comprises X axis rail frame, X axis rail 18, X axis rail slide block 19, X axial filament thick stick, X axial filament thick stick nut, Y axis rail frame 20, Y axial filament thick stick 21, Y axial filament thick stick nut, Y axis rail 22, Y axis rail slide block 23, Z axis rail reinforcement 24, Z axis rail slide block 25, Z axis rail 26, Z axis rail frame 27, Z axial filament thick stick 28, Z axial filament thick stick nut, switch anchor clamps 29, contact 30, screw mandrel 31, nut 32, pressure transducer fixed station 33, solid support 34,35, No. 1 stepper motor shaft coupling of worktable, No. 1 stepper motor leading screw and No. 1 stepper motor feed screw nut.
The mechanical part of automobile keyswitch test macro is to adopt the three-dimensional guide rail mechanism promptly to adopt the tested automobile keyswitch of directions X guide rail mechanism, Y traversing guide mechanism and Z traversing guide mechanism controls moving in X, Y and Z direction.No. 1 stepper motor 4 is fixed on the right-hand member of pressure transducer fixed station 33, and No. 1 stepper motor shaft joint, No. 1 stepper motor leading screw that is set with No. 1 stepper motor feed screw nut are connected with the left end of the output shaft of No. 1 stepper motor 4 successively; The bottom of No. 1 stepper motor feed screw nut is fixed on the solid support 34; No. 1 stepper motor 4 rotates and drives No. 1 stepper motor leading screw rotation; And then drive pressure transducer fixed station 33 move left and right; Pressure transducer 7 is fixed on the pressure transducer fixed station 33, so pressure transducer 7 is with pressure transducer fixed station 33 move left and right together.Nut 32, screw mandrel 31 are connected with the left end of pressure transducer 7 with contact 30 successively.No. 1 stepper motor 4 is connected with No. 1 stepper motor driver 3 electric wires, and promptly No. 1 stepper motor 4 is controlled strokes by No. 1 stepper motor driver 3, and then controls No. 1 stepper motor leading screw drive contact 30 and carry out rectilinear motion.
Described directions X guide rail mechanism comprises stepper motor 11, X axis rail frame, X axial filament thick stick, X axial filament thick stick nut, X axis rail 18 and X axis rail slide blocks 19 compositions No. 2.No. 2 stepper motor 11 is fixed on the front end face of X axis rail frame, and No. 2 stepper motor 11 is connected with No. 2 stepper motor driver 10 electric wires, and promptly No. 2 stepper motors 11 are by No. 2 stepper motor driver 10 controls.X axis rail frame is fixed on the worktable 35 along directions X; The X axial filament thick stick that is set with X axial filament thick stick nut is connected with the output terminal of No. 2 stepper motors 11; The bottom of X axial filament thick stick nut is fixed on the base in the X axis rail frame, and X axis rail 18 and X axis rail slide block 19 are separately fixed between base and the worktable of X axis rail frame to being slidingly matched.No. 2 stepper motors 11 rotate and drive the rotation of X axial filament thick stick, and then the worktable that drives in the X axis rail frame moves forward and backward.
Described Y traversing guide mechanism comprises that No. 3 stepper motors 13, Y axis rail support 20, Y axis rail 22, Y axis rail slide block 23, Y axial filament thick stick 21 and Y axial filament thick stick nuts form.No. 3 stepper motor 13 is fixed on the left side of Y axis rail support 20, and No. 3 stepper motor 13 is connected with No. 3 stepper motor driver 12 electric wires, and promptly No. 3 stepper motors 13 are by No. 3 stepper motor driver 12 controls.The bottom of Y axis rail support 20 is fixed on the worktable in the X axis rail frame, and Y axis rail 22 and Y axis rail slide block 23 are separately fixed between base and the worktable of Y axis rail frame to being slidingly matched.The Y axial filament thick stick 21 that is set with Y axial filament thick stick nut is connected with the right-hand member of No. 3 stepper motor 13 output shafts; The bottom of Y axial filament thick stick nut is fixed on the base in the Y axis rail frame; No. 3 stepper motors 13 rotate and drive the rotation of Y axial filament thick stick, and then drive the worktable move left and right in the Y axis rail frame.
Described Z traversing guide mechanism comprises that No. 4 stepper motors 15, Z axis rail support 27, Z axis rail 26, Z axis rail slide block 25, Z axial filament thick stick 28 and Z axial filament thick stick nuts form.No. 4 stepper motor 15 is fixed on the top end face of Z axis rail support 27, and No. 4 stepper motor 15 is connected with No. 4 stepper motor driver 14 electric wires, and promptly No. 4 stepper motors 15 are by No. 4 stepper motor driver 14 controls.The bottom of Z axis rail support 27 is fixed on the worktable in the Y axis rail support 20, and Z axis rail 26 and Z axis rail slide block 25 are separately fixed between base and the worktable of Z axis rail support 27 to being slidingly matched.The Z axial filament bar 28 that is set with Z axial filament thick stick nut is connected with the lower end of No. 4 stepper motor 15 output shafts; The bottom of Z axial filament thick stick nut is fixed on the base in the Z axis rail support 27; No. 4 stepper motors 15 rotate and drive 28 rotations of Z axial filament thick stick, and then the worktable that drives in the Z axis rail support 27 moves up and down.Tested automobile keyswitch is fixed on the switch anchor clamps 29 on the worktable that is installed in Z axis rail support 27.
Described electric part 36 comprises that model is the industrial control computer 1 of IPC-610L; Model is the multifunctional data acquisition card 2 of 8361AN; Model is No. 1 stepper motor driver 3 of DCM4010; Model is 28000 No. 1 stepper motor 4; Model is the relay 5 of SRD-S-112D; Model is No. 1 D.C. regulated power supply 6 of SKD6010D; Pressure transducer 7; Suppressing signal disturbs and filtering circuit 8; Model is the millivolt transmitter 9 of FD-3; Model is No. 2 stepping electrical equipment drivers 10 of DCM4010; Model is 35000 No. 2 stepper motors 11; Model is No. 3 stepper motor drivers 12 of DCM4010; Model is 35000 No. 3 stepper motors 13; Model is No. 4 stepper motor drivers 14 of DCM4010; Model is 35000 No. 4 stepper motors 15; Model is that the amplifier 16 of AM-T-V100/U5 is No. 2 D.C. regulated power supplies 17 of SKD3010D with model.
Consult Fig. 3, automobile keyswitch test macro is operated in normal temperature and the normal wet environment.Multifunctional data acquisition card 2 is inserted in the pci card groove of industrial control computer 1; Multifunctional data acquisition card 2 has the input of 8 tunnel simulating signals; 16 road logical signal I/O; Multifunctional data acquisition card 2 logical signal output terminal DO0-DO2 adopt the three-core shielding line to connect input end PUL, input end DIR and the input end ENA on the stepper motor driver 3 successively No. 1; DO0 is responsible for giving 3 pulses of No. 1 stepper motor driver; The step direction of No. 1 stepper motor 4 of DO1 control; DO2 is to No. 13 enable signals of motor driver (low level is effective), and No. 1 stepper motor driver 3 middle port OA+, port OA-, port OB+ and port OB-are connected with electric wire is corresponding with port A+, port A-, port B+, port B-on No. 1 stepper motor 4, and the port GND of No. 1 stepper motor driver 3, port Vdc are linked to each other with port GND, the port VCC of No. 1 D.C. regulated power supply 6 of 40V by two core Shielded Twisted Pairs; Multifunctional data acquisition card 2 logical signal output port DO3-DO5 adopt the three-core shielding line to connect input end PUL, input end DIR and the input end ENA on the stepper motor driver 10 successively No. 2; DO3 is responsible for giving 10 pulses of No. 2 stepper motor drivers; The step direction of No. 2 stepper motors 11 of DO4 control; DO5 is to No. 2 10 enable signals of motor driver (low level is effective); OA+ in No. 2 stepper motor drivers 10, OA-, OB+ and OB-port are connected with electric wire is corresponding with port B-with port A+, port A-, port B+ on No. 2 stepper motors 11, and the GND of No. 2 stepper motor drivers 10, Vdc port are linked to each other with GND, the VCC port of No. 1 D.C. regulated power supply 6 of 40V by two core Shielded Twisted Pairs; Multifunctional data acquisition card 2 logical signal output port DO6-DO8 adopt the three-core shielding line to connect input end PUL, input end DIR and the input end ENA of No. 3 stepper motor drivers 12 successively; DO6 is responsible for giving 12 pulses of No. 3 stepper motor drivers; The step direction of No. 3 stepper motors 13 of DO7 control; DO8 is to No. 3 12 enable signals of motor driver (low level is effective); Port OA+ on No. 3 stepper motor drivers 12, port OA-, port OB+, port OB-are connected with electric wire is corresponding with port A+, port A-, port B+, port B-on No. 3 stepper motors 13, and the port GND of No. 3 stepper motor drivers 12, port Vdc are linked to each other with port GND, the port VCC of No. 1 D.C. regulated power supply 6 of 40V by two core Shielded Twisted Pairs; Multifunctional data acquisition card 2 logical signal output port DO9-DO11 adopt the three-core shielding line to connect input end PUL, input end DIR and the input end ENA of No. 4 stepper motor drivers 14 successively; DO9 is responsible for giving 14 pulses of No. 4 stepper motor drivers; The step direction of No. 4 stepper motors 15 of DO10 control; DO11 is to No. 4 14 enable signals of motor driver (low level is effective); Port A+ on port OA+ on No. 4 stepper motor drivers 14, port OA-, port OB+, port OB-and No. 4 stepper motors 15, port A-, port B+, port B-are with the corresponding connection of electric wire, and the port GND of No. 4 stepper motor drivers 14, port Vdc are linked to each other with port GND, the port VCC of No. 1 D.C. regulated power supply 6 of 40V by two core Shielded Twisted Pairs.The port GND of No. 1 D.C. regulated power supply 6 draws a lead and is connected to the earth, and the logical signal line separates wiring with the D.C. regulated power supply line.
The control signal that 10, No. 3 stepper motor drivers 12 of No. 2 stepper motor drivers among the present invention and No. 4 motor drivers 14 receive industrial control computers 1 through multifunctional data acquisition card 2 makes No. 2, No. 3, No. 4 stepper motors motions; Accomplish the position adjustment of tested automobile keyswitch in X-direction, Y direction, Z-direction three dimensions; No. 1 stepper motor driver 3 receives multifunctional data acquisition card 2 control signals makes No. 1 stepper motor 4 motions; Rotating and reverse of No. 1 stepper motor 4 makes pressure transducer 7 move left and right, and then accomplishes the click process of the 22 pairs of tested automobile keyswitches of contact on the pressure transducer 7.
Consult Fig. 4, multifunctional data acquisition card 2 logical signal output terminal DO15 connect relay 5 pilot angles through single-core shielding line, and the DGND of multifunctional data acquisition card 2 (digitally) end connects the input end GND of relay 5 through single condctor.The voltage that is loaded on the tested automobile keyswitch is input to relay 5 signal input parts; The signal output part Out1 of relay 5 is connected to multifunctional data acquisition card 2 input end of analog signal AI1 through single-core shielding line; Out2 is connected to the port SI+ of amplifier 16 through single-core shielding line; The port SO+ of amplifier 16 is connected to multifunctional data acquisition card 2 input end of analog signal AI 2 through single-core shielding line; The VCC of amplifier 16 and GND end are connected to the VCC and the GND end of No. 2 D.C. regulated power supplies 17 of 24V by the twin-core shielding line, analog signal line, D.C. regulated power supply line, the separately wiring of relay perception drive wire.
Consult Fig. 5; The output line of pressure transducer 7 is the long five core shielding lines of 1m; Red line be signal+, white line be signal-, green line for the excitation+, black line for the excitation-, blue line for the shielding; Pressure transducer 7 signals+, signal-output line and suppress that signal disturbs and the input end signal of filtering circuit 8+, input end signal-link to each other; Suppress that signal disturbs and the output port signal of filtering circuit 8+, the output port excitation of pressure transducer 7+, the output port excitation of pressure transducer (7)-with the output port shielding of pressure transducer (7) successively with millivolt transmitter 9 corresponding input port signals+, excitation+, excitation-be connected with shielding; Millivolt transmitter 9 signals-port ground connection; The input end of analog signal AI 0 of output terminal V0 and the multifunctional data acquisition card 2 of millivolt transmitter 9 links to each other the port GND of millivolt transmitter 9 and the port GND that portmask connects No. 1 D.C. regulated power supply 6 through single-core shielding line.This test macro adopts single-end earthed, reduces the ground loop that ground wire causes.
The pressure signal of pressure transducer 7 inputs is through after suppressing common mode interference, filtering, amplification among the present invention; Through multifunctional data acquisition card 2; Output on the industrial control computer 1,1 pair of pressure signal of receiving of industrial control computer carries out data processing and display image.
The components and parts that adopted among the embodiment:
1. to adopt and grind the model that China produces be the industrial control computer of IPC-610L for industrial control computer 1, has pre-power supply and HDD status indicator lamp, shock resistance, concussion, and working temperature is 0-60 ℃.
In the industrial control computer 1 that the present invention adopted testing software is housed; Testing software by switch pressure and forward voltage curve display module, data recordin module, test parameter module is set, key scroll selects the peak value of module, switch machinery performance change part and valley display module, automobile keyswitch qualification determination module, three-dimensional guide rail mechanism position adjusting type modules, button reset motor module, data and image are preserved module, data and image call module and the test report print module is formed, these modules can be called through the man-machine interface in the testing software.
2. the model that wound was ground by Thailand during multifunctional data acquisition card 2 was selected for use is the capture card of 8361AN, and the parameter of this capture card is: hyperchannel circle collection frequency 100KHZ, analog quantity input voltage range 0-10V; 12 of input precisions; The buffer zone that 8K is arranged, working temperature 0-50 ℃, humidity 20-80%RH.
3. four stepper motor drivers model of all selecting for use the Hayden to produce is the stepper motor driver of DCM4010, and they have short circuit, and overvoltage is under-voltage; Perfect defencive function such as overheated and the advantage with multiple segmentation are set the segmentation number of driver through toggle switch, have 1,2; 4,8,16,32; 64,7 grades of micro-stepping segmentations, drive current are 0.15 amp-1.06 peaces, and the size of drive current is controlled by toggle switch; Supply voltage 40VDC, working temperature-20-50 ℃, humidity 15-85%RH, non-dewfall.
4.1 the serial model No. that number stepper motor 4 selects for use the Hayden to produce is 28000 linear stepping motor, it is the thrust of 25 pounds (11.5 kilograms) that maximal value can be provided, and step-length is available from 0.003175mm to 0.0508mm; Rated current is 0.42 peace, 1.8 ° of step angles, stepping accuracy 5%; The maximum intensification 75 ℃, the serial model No. that 13, No. 4 stepper motors 15 of 11, No. 3 stepper motors of No. 2 stepper motors all select for use the Hayden to produce is 35000 linear stepping motor, it is the thrust of 50 pounds (23 kilograms) that maximal value can be provided; Step-length is available from 0.003048mm to 0.048768mm, and rated current is 0.57 peace, 1.8 ° of step angles; Stepping accuracy 5%, the maximum intensification 75 ℃.
5. relay 5 models of selecting for use three friends to produce are the 5 pin relays of SRD-S-112D, and the Out1 output terminal is normally closed, and the Out2 output terminal is often opened; This relay input voltage 3-32VDC, reliable turn-off voltage be less than 0.8VDC, ON time 1ms; Turn-off time 10ms, working temperature-35-+70 ℃.
6. safe model of grinding wound was the amplification module of AM-T-V100/U5 during amplifier 16 adopted; Input voltage range 0-100mV, output voltage range 0-5V has input, output, the tripartite isolation of power supply; Amplifying circuit and filtering circuit are arranged in the amplifier 16; Supply voltage 24VDC, working temperature is 0-50 ℃, relative humidity 0-90%RH.
7. pressure transducer 7 is a S type pressure transducer customized, according to the shape of testing table sensor stand length and width customized and height is: the sensor of 165.5mm, 85.5mm and 20.5mm, and it is even that this sensor bears pressure, and the output symmetry is good.Because this invents complete anthropomorphic dummy's manual manipulation, staff is 10N to the switch maximum force usually, and it is bigger 3～5 times than actual persons manual manipulation that requirement of experiment applies the power upper limit to switch, so the range of this sensor is elected to be 0～10kg.In order to guarantee the test data accuracy, select input precision high, it is good to repeat performance; The sensor that temperature drift is little, this sensor synthesis precision 0.05%FS, sensitivity 10.1mV/V; Non-linear 0.05%FS, hysteresis quality 0.05%FS, repeated 0.05%FS; 0.05%FS/10 ℃ of zero temperature coefficient, 0.05%FS/10 ℃ of output temperature coefficient, operating temperature range-20-+65 ℃.
8. consult Fig. 6, suppress signal interference and filtering circuit 8 and form by common mode inhibition circuit and filtering circuit; All resistance of this circuit, electric capacity, model are that 741 chip, the chip that model is 3288RT all are arranged on the bread board, and used device is fixed on the bread board through scolding tin, connects through plain conductor.Model be 741 chip and model be 3288RT chip by No. 2 D.C. regulated power supplies 17 power supplies.Wherein, the advantage of common mode inhibition circuit is: can effectively suppress common mode interference part in the test signal, improve the accuracy of test signal; When measured signal was faint, the measured signal in the signal was less than common mode interference signal, after amplifying; Measured signal might be flooded in the common mode interference signal, causes data error, and the common mode inhibition circuit adopts differential input mode; Through common mode voltage parallel connection negative feedback, the common mode composition in the deamplification fast, common-mode rejection ratio can reach 115dB; Because measured signal is low frequency signal, filtering circuit adopts the capacitance-resistance filter technology, through 2 rank active filters, and can effectively filtering high frequency interference and prevent to vibrate;
9. millivolt transmitter 9 model of selecting for use Electrical Measuring Instrument joint-stock company of Air China to produce is the millivolt transmitter of FD-3; Its built-in accurate amplifying circuit; Can the input signal (mV) of pressure transducer be converted to the general-purpose simulation signal of 0-5V, millivolt transmitter 9 precision are superior to 0.1%FS, can insert the sensitivity 1mV/V-3mV/V of sensor; Working temperature-20-+85 ℃, long-time stability are less than 0.2%FS/.
10.1 the model that number D.C. regulated power supply 6 adopts Si Mude to produce is the adjustable D.C. regulated power supply of SKD6010D, output voltage is adjusted to 40VDC; It is the adjustable D.C. regulated power supply of SKD3010D that No. 2 D.C. regulated power supplies 17 adopt the model of Si Mude production, and output voltage is adjusted to and is 24VDC.No. 1 D.C. regulated power supply 6 and No. 2 D.C. regulated power supply 17 working temperatures are-20-+50 ℃, and the ripple voltage state is less than 0.5%, and the constant voltage state is less than 0.1%, and frequency is 50HZ10%.
The principle of work of automobile keyswitch test macro:
Tested automobile keyswitch is fixed on and is installed in the Z axis rail support 27 on the switch anchor clamps 29 on the worktable; Send control signal by industrial control computer 1 control multifunctional data acquisition card 2 to 10, No. 3 stepper motor drivers 12 of No. 2 stepper motor drivers and No. 4 stepper motor drivers 14; 10, No. 3 stepper motor drivers 12 of No. 2 stepper motor drivers and No. 4 stepper motor drivers 14 send control signal to 11, No. 3 stepper motors 13 of No. 2 stepper motors and No. 4 stepper motors 15 again; Thereby the tested automobile keyswitch that will be installed on the switch anchor clamps 21 is adjusted to needed correct position in three dimensions, i.e. contact 30 and the tested automobile keyswitch 1mm distance of being separated by.After tested automobile keyswitch is adjusted to correct position; Industrial control computer 1 control multifunctional data acquisition card 2 sends control signal to No. 1 stepper motor driver 3; No. 1 stepper motor driver 3 sends control signal to No. 1 stepper motor 4; No. 1 stepper motor 4 forward or reverse drive pressure transducer 7 and move forward or backward, the click that the contact 30 on the pressure transducer 7 is accomplished tested automobile keyswitch.In the process that the automobile keyswitch is clicked; Multifunctional data acquisition card 2 is that port AI0, port AI1 and port AI2 are to pressure signal and voltage signal high speed circle collection through the simulating signal end; Through A/D conversion and corresponding data processing, pressure curve and voltage curve are presented on the operation pages of industrial control computer 1.If the scope that the peak value of switch machinery performance change part and valley move in preset threshold, qualified products then; Otherwise, defective.
Consult Fig. 7, adopt the method for automobile keyswitch test system and test automobile keyswitch performance of the present invention, step is following:
1. tested automobile keyswitch is installed on the switch anchor clamps 21; Operation three-dimensional guide rail mechanism position adjusting type modules (promptly controlling 11, No. 3 stepper motors 13 of No. 2 stepper motors and No. 4 stepper motors 15) and button reset motor module (promptly controlling stepper motor No. 1) are adjusted to correct position with tested automobile keyswitch, i.e. contact 30 and the tested automobile keyswitch 1mm distance of being separated by.Three-dimensional guide rail mechanism position adjusting type modules comprises: the button that control Y axis rail mechanism moves forward and backward on X-direction; The button of control Z axis rail mechanism move left and right on Y direction; The button that CS anchor clamps 21 move up and down on Z-direction.Button reset motor module comprises: No. 1 stepper motor 4 drives the button of contact 30 move left and right on the pressure transducer 7;
2. at test parameter maximum pressure and the range of setting click switch in the module is set; The tested automobile keyswitch mechanical property that input switch producer provides changes the variation range of part peak value and valley; As judging the qualified threshold value of switch, utilize key scroll to select module selection key speed its scope.Key scroll selects in the module high speed, middling speed, low speed option are arranged, and when selecting high speed, key scroll is 15mm/min, and when selecting middling speed, key scroll is 10mm/min, and when selecting low speed, key scroll is 5mm/min;
3. begin test, before the device start, to image demonstration, data recording, qualified products whether, pre-set parameter, multifunctional data acquisition card 2 initialization;
4. automobile keyswitch test macro carries out the switch click action; While multifunctional data acquisition card 2 high speed acquisition data; Testing software through being installed in the industrial control computer 1 accomplishes data processing and peaking and valley; After the click process is accomplished, show pressure and forward voltage curve and peak value display and valley in the peak value of switch machinery performance change part and valley display module;
Described data processing and peaking and valley are meant:
1) data processing is that data rough handling and data secondary treating are formed by two parts.In the timing loop program, each No. 1 stepper motor 4 motion backs have the time of 5ms to carry out data acquisition, data rough handling, open up internal memory and deposit this secondary data before motion next time; After the button process finished, the testing software in the automobile keyswitch test macro carried out secondary treating and drawing image to total data in the internal memory.
(1) data rough handling:
After contact 30 touches tested automobile keyswitch; The stepping each time of No. 1 stepper motor 4; Multifunctional data acquisition card 2 can both be gathered n data (n＜8192) on this position, the test procedure that is installed in the industrial control computer 1 is averaged to n the pressure data of gathering, then n pressure data successively with mean value do poor; If difference less than 3 times mean square deviation, then leaves at this moment stepping position and mean value in the internal memory in; Otherwise, if difference greater than 3 times mean square deviation, then this value is played and is removed, and the n-1 number is averaged, by that analogy, stepping position that at last will this moment leaves in the internal memory with rational mean value.
(2) data secondary treating:
After the button process finished, the testing software that is installed in the industrial control computer 1 carried out the secondary data processing to all data that deposit internal memory in the data rough handling in.The continuously normal observation data in front is a foundation in the internal memory to read, and sets up the least square polynomial expression, postpones the observation data estimated value of carving for the moment outward; With the measured data in this moment do poor; Whether the identification difference surpasses given thresholding δ (δ is a 3-5 mean square deviation doubly), thinks that then this observation data is suspicious exceptional value if surpass thresholding, and it is rejected; And substitute it, otherwise be normal value with estimated value.Usually get 4 the continuously normal observation datas in front, adopt the single order polynomial expression to calculate.
A. ask for the young waiter in a wineshop or an inn Cheng Fangcheng of observed reading
The test curve of pressure belongs to linearity curve, from internal memory, takes out one group of pressure data (x
i, y
i), x
iBe the stroke of No. 1 stepper motor 4 steppings the i time, y
iBe the switch force value of the i time actual measurement of No. 1 stepper motor 4 steppings, set up least-squares line equation y=f (x)=Ax+B, A, B asks A, B coefficient for the coefficient of the equation of building, and must guarantee equation
Be minimum value, make E that (A, B) partial derivative to A and B is zero, promptly
With
Can get thus
Can obtain A, B by this set of equations, fitting a straight line can satisfy E (A, the condition of minimum B).
B. judge whether observed reading is reliable constantly in back one
Through fitting a straight line, obtain the i estimated value of observation data constantly
y
iBe i measured value constantly, observe
Whether set up,, then think y if set up
iBe normal value, otherwise y
iBe exceptional value, and substitute it, open up the deposit data of new internal memory after at last wherein, so that switch pressure and forward voltage curve display module are called this internal storage data when showing curve secondary treating with the estimated value after the match.
2) peak value of asking switch machinery performance change part is during with valley, and testing software has used the mathematical thought of differentiate, through the method switch machinery performance change peak value and valley is partly accurately obtained:
Take out (x successively with having stroke and force value in the internal memory after the data secondary treating
m, y
m) ... (x
k, y
k) ... (x
n, y
n), m, k, n represent No. 1 stepper motor 4 step number in motor open and close process, and x is a stroke, and y is a force value, at point (x
K+1, y
K+1) and (x
k, y
k) between slope do
At point (x
K+2, y
K+2) and (x
K+1, y
K+1) between slope do
k
I+1* k
I+2＜0, (x then
K+1, y
K+1) must be by being asked a little; Can obtain four points according to this method; Be switch peak point and valley point when pressing, peak point and valley point during switch bounce, the y value of two points when relatively pressing; And the y value of two somes during resilience, can confirm the peak value and the valley of switch machinery performance change part.
5. the threshold value with peak value and valley and input before contrasts; If in threshold range; Then eject dialog box and point out that green light lights on the qualified and automobile keyswitch qualification determination module of tested automobile keyswitch, otherwise point out the red light on defective and the automobile keyswitch qualification determination module to light;
6. preserve module and test report print module through data and image behind the EOT and carry out data and preserve with test report and print, on the test report display switch mechanical property change peak value and valley, experimental image partly and write down tested automobile keyswitch whether qualified.
Consulting Fig. 8, is the test result of the tested automobile keyswitch of a certain model among the figure, and this image adopts two coordinate axis, left longitudinal axis representative pressure value; Unit is newton (N), right longitudinal axis representative voltage value, and unit is volt (V); Transverse axis is represented travel distance, and unit is a millimeter (mm), after pressing switch; Abscissa value is between 0.92mm～0.96mm the time, and magnitude of voltage sharply descends, and the switch conduction state is obvious; Force value is reduced to 4.6970N by 5.1181N, and little to the staff resistance when switch conduction is described, comfortableness is good; When switch bounce, abscissa value is between 0.80mm～0.76mm the time, and magnitude of voltage sharply rises, and force value rises to 3.5767N by 3.0457N.Through the data contrast that provides with the switch manufacturer, the data of surveying can be true, reflect switch performances intuitively.
Claims (2)
1. automobile keyswitch test macro; Comprise electric part (36); It is characterized in that, described electric part (36) comprise model be the industrial control computer (1) of IPC-610L, multifunctional data acquisition card (2), model that model is 8361AN be No. 1 stepper motor driver (3), the model of DCM4010 is 28000 No. 1 stepper motor (4), model is SRD-S-112D relay (5), model be SKD6010D No. 1 D.C. regulated power supply (6), pressure transducer (7), suppress that signal disturbs and filtering circuit (8), model are that the millivolt transmitter (9) of FD-3, No. 2 stepping electrical equipment drivers (10), model that model is DCM4010 are that 35000 No. 2 stepper motors (11), model are that No. 3 stepper motor drivers (12), the model of DCM4010 is that 35000 No. 3 stepper motors (13), model are that No. 4 stepper motor drivers (14), the model of DCM4010 is that 35000 No. 4 stepper motors (15), amplifier (16) and the model that model is AM-T-V100/U5 are No. 2 D.C. regulated power supplies (17) of SKD3010D;
Described model is in the industrial control computer (1) of IPC-610L switch pressure and forward voltage curve display module to be installed; Data recordin module; Test parameter is provided with module; Key scroll is selected module; The peak value and the valley display module of switch machinery performance change part; Automobile keyswitch qualification determination module; Three-dimensional guide rail mechanism position adjusting type modules; Button reset motor module; Data and image are preserved module; Data and image call module and test report print module;
Multifunctional data acquisition card (2) is inserted in the pci card groove of the industrial control computer that model is IPC-610L (1); Model is that the logical signal output port DO0, logical signal output port DO1 of the multifunctional data acquisition card (2) of 8361AN adopts the three-core shielding line to be connected input port PUL, input port DIR and input port ENA on No. 1 stepper motor driver (3) that model is DCM4010 successively with logical signal output port DO2, and model is that port OA+, port OA-, port OB+ and the port OB-on No. 1 stepper motor driver (3) of DCM4010 is that port A+, port A-, port B+ on 28000 No. 1 stepper motor (4) is connected with port B-electric wire with model successively; Model is that the logical signal output port DO3, logical signal output port DO4 of the multifunctional data acquisition card (2) of 8361AN adopts the three-core shielding line to be connected input port PUL, input port DIR and input port ENA on No. 2 stepper motor drivers (10) that model is DCM4010 successively with logical signal output port DO5, and model is that port OA+, port OA-, port OB+ and the port OB-on No. 2 stepper motor drivers (10) of DCM4010 is that port A+, port A-, port B+ on 35000 No. 2 stepper motors (11) is connected with port B-electric wire with model successively; Model is that the logical signal output port DO6, logical signal output port DO7 of the multifunctional data acquisition card (2) of 8361AN adopts the three-core shielding line to be connected input port PUL, input port DIR and input port ENA on No. 3 stepper motor drivers (12) that model is DCM4010 successively with logical signal output port DO8, and model is that port OA+, port OA-, port OB+ and the port OB-on No. 3 stepper motor drivers (12) of DCM4010 is that port A+, port A-, port B+ on 35000 No. 3 stepper motors (13) is connected with port B-electric wire with model successively; Model is that the logical signal output port DO9, logical signal output port DO10 of the multifunctional data acquisition card (2) of 8361AN adopts the three-core shielding line to be connected input port PUL, input port DIR and input port ENA on No. 4 stepper motor drivers (14) that model is DCM4010 successively with logical signal output port DO11, and model is that port OA+, port OA-, port OB+ and the port OB-on No. 4 stepper motor drivers (14) of DCM4010 is that port A+, port A-, port B+ on 35000 No. 4 stepper motors (15) is connected with port B-electric wire with model successively; Model is that No. 1 stepper motor driver (3), the model of DCM4010 is that No. 2 stepping electrical equipment drivers (10), the model of DCM4010 is that No. 3 stepper motor drivers (12) and the model of DCM4010 is that port GND and port Vdc on No. 4 stepper motor drivers (14) of DCM4010 is that port GND on No. 1 D.C. regulated power supply (6) of SKD6010D is connected with port VCC by two core shielding lines and model respectively; Model is that multifunctional data acquisition card (2) the logical signal output terminal DO15 employing single-core shielding line connection model of 8361AN is the pilot angle of the relay (5) of SRD-S-112D; Model is that the port DGND of the multifunctional data acquisition card (2) of 8361AN is the input end GND of the relay (5) of SRD-S-112D through single condctor connection model; Model is the signal output part Out1 of the relay (5) of SRD-S-112D is connected to the multifunctional data acquisition card that model is 8361AN (2) through single-core shielding line input end of analog signal AI1; Model is that the port Out2 of the relay (5) of SRD-S-112D is that the port SI+ of the amplifier (16) of AM-T-V100/U5 is connected through single-core shielding line and model; Model is that the port SO+ of the amplifier (16) of AM-T-V100/U5 is connected to the input end of analog signal AI2 of the multifunctional data acquisition card that model is 8361AN (2) through single-core shielding line, and model is that to adopt twin-core shielding line and model be that the port VCC of No. 2 D.C. regulated power supplies (17) of SKD3010D is connected with port GND to port VCC and the port GND of the amplifier (16) of AM-T-V100/U5; The output port signal of pressure transducer (7)+with output port signal-successively with suppress that signal disturbs and the input port signal of filtering circuit (8)+with input port signal-link to each other; Suppress that signal disturbs and the output port signal of filtering circuit (8)+, the output port excitation of pressure transducer (7)+, the output port excitation of pressure transducer (7)-with the output port shielding of pressure transducer (7) successively with model be FD-3 the corresponding input port signal of millivolt transmitter (9)+, the input port excitation+, input port excitation-with input port shields and is connected; Model is that output port V0 and the model of the millivolt transmitter (9) of FD-3 is that the input end of analog signal mouth AI0 single-core shielding line of the multifunctional data acquisition card (2) of 8361AN links to each other, and model is that the port GND and the portmask of millivolt transmitter (9) of FD-3 meets the port GND that model is No. 1 D.C. regulated power supply (6) of SKD6010D.
2. a method that adopts the described automobile keyswitch of claim 1 test system and test automobile keyswitch performance is characterized in that, the method step of described employing automobile keyswitch test system and test automobile keyswitch performance is following:
1) tested automobile keyswitch is installed on the switch anchor clamps (21), operation three-dimensional guide rail adjusting module and button reset motor module are adjusted tested automobile keyswitch to the right place, and promptly contact (30) and tested automobile keyswitch are at a distance of 1mm;
2) at test parameter maximum pressure and the range of setting click switch in the module is set, the variation range of the threshold value that switch is qualified is judged in the conduct of importing tested automobile keyswitch mechanical property change part peak value and valley; Utilize key scroll to select module to select high speed, middling speed or low speed option, key scroll is 15mm/min during high speed, and key scroll is 10mm/min during middling speed, and key scroll is 5mm/min during low speed;
When 3) beginning to test to image demonstration, data recording, qualified products whether, pre-set parameter and model be multifunctional data acquisition card (2) initialization of 8361AN;
4) automobile keyswitch test macro carries out the switch click action; Model is multifunctional data acquisition card (2) the high speed acquisition data of 8361AN simultaneously; Testing software through being installed in the industrial control computer that model is IPC-610L (1) accomplishes data processing and peaking and valley, shows pressure curve and forward voltage curve and peak value display and valley in switch machinery performance change peak value and valley display module partly;
(1) described data processing is meant:
A. data rough handling:
After contact (30) touches tested automobile keyswitch; Model is the stepping each time of 28000 No. 1 stepper motor (4); Model is that the multifunctional data acquisition card (2) of 8361AN can both be gathered n data on this position; N＜8192, the test procedure that is installed in the industrial control computer that model is IPC-610L (1) is averaged to n the pressure data of gathering, then n pressure data successively with mean value do poor; If difference less than 3 times mean square deviation, then leaves at this moment stepping position and mean value in the internal memory in; Otherwise, if difference greater than 3 times mean square deviation, then this value is played and is removed, and the n-1 number is averaged, by that analogy, stepping position that at last will this moment leaves in the internal memory with rational mean value;
B. data secondary treating:
After the button process finished, the testing software that is installed in the industrial control computer that model is IPC-610L (1) carried out the secondary data processing to all data that deposit internal memory in the data rough handling in, and the continuously normal observation data in front is a foundation in the internal memory to read; Set up the least square polynomial expression, postpone the observation data estimated value of carving for the moment outward, with the measured data in this moment do poor; Whether the identification difference surpasses given thresholding δ; δ is a 3-5 mean square deviation doubly, thinks that then this observation data is suspicious exceptional value if surpass thresholding, and it is rejected; And substitute it, otherwise be normal value with estimated value; Usually get 4 the continuously normal observation datas in front, adopt the single order polynomial expression to calculate:
A. ask for the young waiter in a wineshop or an inn Cheng Fangcheng of observed reading
The test curve of pressure belongs to linearity curve, from internal memory, takes out one group of pressure data (x
i, y
i), x
iFor model is the stroke of 28000 No. 1 stepper motor (4) stepping the i time, y
iFor model is the switch force value of the i time actual measurement of 28000 No. 1 stepper motor (4) stepping, set up least-squares line equation y=f (x)=Ax+B, A, B asks A, B coefficient for the coefficient of the equation of building, must the assurance equation
Be minimum value, make E that (A, B) partial derivative to A and B is zero, promptly
With
Can get thus
Can obtain A, B by this set of equations, fitting a straight line can satisfy E (A, the condition of minimum B);
B. judge whether observed reading is reliable constantly in back one
Through fitting a straight line, obtain the i estimated value of observation data constantly
y
iBe i measured value constantly, observe
Whether set up,, then think y if set up
iBe normal value, otherwise y
iBe exceptional value, and substitute it, open up the deposit data of new internal memory after at last wherein, so that switch pressure and forward voltage curve display module are called this internal storage data when showing curve secondary treating with the estimated value after the match;
(2) the described peak value and the valley of switch machinery performance change part asked is meant:
When the peak value of asking switch machinery performance change part and valley, testing software has used the mathematical thought of differentiate, through the method the peak value and the valley of switch machinery performance change part is accurately obtained:
Take out (x successively with having stroke and force value in the internal memory after the data secondary treating
m, y
m) ... (x
k, y
k) ... (x
n, y
n), m, k, n represent that model is No. 1 stepper motor (4) step number in the open and close process of 28000, and x is a stroke, and y is a force value, at point (x
K+1, y
K+1) and (x
k, y
k) between slope do
At point (x
K+, y
2k) and (x
K+1, y
K+1) between slope do
k
I+1* k
I+2＜0, (x then
K+1, y
K+1) must be by being asked a little; Can obtain four points according to this method; Be switch peak point and valley point when pressing, peak point and valley point during switch bounce, the y value of two points when relatively pressing; And the y value of two somes during resilience, can confirm the peak value and the valley of switch machinery performance change part;
5) threshold value with peak value and valley and input before contrasts; If in threshold range; Then eject dialog box and point out that green light lights on the qualified and automobile keyswitch qualification determination module of tested automobile keyswitch, otherwise point out the red light on defective and the automobile keyswitch qualification determination module to light;
6) preserve module and test report print module through data and image behind the EOT and carry out data and preserve with test report and print, on the test report display switch mechanical property change peak value and valley, experimental image partly and write down tested automobile keyswitch whether qualified.
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| CN104266831A (en) * | 2014-10-09 | 2015-01-07 | 昌辉汽车电器（黄山）股份公司 | Device for testing on-off state of elastic sheet contact and instantaneous pressure during switching off |
| CN104266831B (en) * | 2014-10-09 | 2017-02-01 | 昌辉汽车电器（黄山）股份公司 | Device for testing on-off state of elastic sheet contact and instantaneous pressure during switching off |
| CN104990701A (en) * | 2015-07-21 | 2015-10-21 | 上海福宇龙汽车科技有限公司 | Automobile panel button press force testing device and method |
| CN104990701B (en) * | 2015-07-21 | 2018-03-30 | 上海福宇龙汽车科技有限公司 | Car panel button keys force test device and method |
| CN105092265B (en) * | 2015-09-02 | 2018-03-13 | 南京豪滨科技有限公司 | It is a kind of while detect vehicle and press mechanism force value and the detection means and its control method of stroke aloud |
| CN105092265A (en) * | 2015-09-02 | 2015-11-25 | 南京豪滨科技有限公司 | Detection device for simultaneously detecting force value and stroke of vehicle ringing mechanism |
| CN108089953A (en) * | 2016-11-21 | 2018-05-29 | 阿瓦亚公司 | User interface function is tested by the actuating of piezoelectricity grid |
| CN108089953B (en) * | 2016-11-21 | 2022-01-25 | 阿瓦亚公司 | Testing user interface functionality through actuation of piezoelectric meshes |
| US11029661B2 (en) | 2016-11-21 | 2021-06-08 | Avaya Inc. | Remote user interface actuation using a piezoelectric grid |
| CN106885605A (en) * | 2017-02-22 | 2017-06-23 | 余佳盈 | A kind of CCD detection methods of Industry Control switch |
| CN107091733A (en) * | 2017-04-21 | 2017-08-25 | 合益激光设备(深圳)有限公司 | Elastic component detection method and detector, switch detection method and detector |
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| CN108020404A (en) * | 2017-11-07 | 2018-05-11 | 芜湖赛宝信息产业技术研究院有限公司 | A kind of car light button durability test apparatus |
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| CN109342044A (en) * | 2018-11-29 | 2019-02-15 | 汽-大众汽车有限公司 | A kind of automobile chassis diskware heat distortion test flexible measuring device |
| CN110102514A (en) * | 2019-05-06 | 2019-08-09 | 苏州峘一自动化有限公司 | Multi-position integral test equipment |
| CN110133478A (en) * | 2019-05-20 | 2019-08-16 | 上海闻泰电子科技有限公司 | Abnormal detection circuit, method, apparatus and medium |
| CN111062116A (en) * | 2019-11-13 | 2020-04-24 | 天津津航计算技术研究所 | Method for accurately identifying analog quantity key information with unknown characteristics |
| WO2021139822A1 (en) * | 2020-03-18 | 2021-07-15 | 中国标准化研究院 | Clamp for accelerated life test |
| CN113721139A (en) * | 2021-08-02 | 2021-11-30 | 歌尔光学科技有限公司 | Key detection method and system |
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