CN103424656A

CN103424656A - Comprehensive detector for electric parameters of duplex potentiometer

Info

Publication number: CN103424656A
Application number: CN2013103440808A
Authority: CN
Inventors: 袁静萍; 过幼男
Original assignee: Jiangsu University of Technology
Current assignee: Jiangsu University of Technology
Priority date: 2013-08-08
Filing date: 2013-08-08
Publication date: 2013-12-04
Anticipated expiration: 2033-08-08
Also published as: CN103424656B; CN104865482A; CN104977493B; CN104898000A; CN104898000B; CN104865482B; CN104977493A; CN104898001A; CN104898001B

Abstract

The invention provides a comprehensive detector for electric parameters of a duplex potentiometer. The comprehensive detector comprises a first detection unit, a second detection unit, a comprehensive information processing unit, a touch display screen, indicating lamps, a buzzer, a loudspeaker, a power module and a constant voltage source module, wherein the first detection unit is used for detecting total resistance, zero resistance and synchronizing characteristics of the duplex potentiometer, the second detection unit is used for detecting motive noise of the duplex potentiometer, the comprehensive information processing unit is used for performing control and processing information, the touch display screen is used for setting the parameters and displaying detection results, the indicating lamps and the buzzer are used for indicating detection states, the loudspeaker is used for listening to the motive noise, the power module is used for supplying power, the constant voltage source module is used for supplying constant voltage, the first detection unit, the second detection unit and the touch display screen are electrically connected with the comprehensive information processing unit through bidirectional signals, the indicating lamps and the buzzer are electrically connected with the comprehensive information processing unit through signals, and the loudspeaker is electrically connected with the second detection unit through signals. The total resistance, the zero resistance, the synchronizing characteristics and motive noise characteristics of the duplex potentiometer are integrally detected, the comprehensive detector is high in detection precision and convenient to use, the detection cost of duplex potentiometer production enterprises can be effectively reduced, and production efficiency is improved.

Description

Duplex potentiometer electrical quantity comprehensive detector

Technical field

The present invention relates to potentiometer checkout equipment technical field, be specifically related to a kind of duplex potentiometer electrical quantity comprehensive detector.

Background technology

The manufacturing enterprise of duplex potentiometer needs the electrical quantitys such as total resistance, zero resistance, synchronizing characteristics and moving noise characteristic to duplex potentiometer to be detected on production line.At present, enterprise is detected the electrical quantity of duplex potentiometer, mostly adopts a plurality of stations to test respectively the different electrical parameters of duplex potentiometer.As: first station detects total resistance and zero resistance of duplex potentiometer; Second station detects the synchronizing characteristics of duplex potentiometer with the synchronizing characteristics tester; The 3rd station detects the moving noise of duplex potentiometers etc. with 2 moving noise testers.The mode that this kind detected the electrical quantity of duplex potentiometer exists obvious defect and deficiency: the one, and need the testing tool of use more, and mostly be the pointer testing tool of pure mimic channel, precision is lower; The 2nd, the tester on each station needs that duplex potentiometer is inserted to unit clamp and carries out corresponding measurement, after extract again duplex potentiometer and hand over subsequent processing to continue to detect, seriously reduced work efficiency; The 3rd, recruitment is many, to enterprise, has increased larger human cost burden.

Summary of the invention

The objective of the invention is: overcome the deficiencies in the prior art, provide a kind of cost lower, easy to use directly perceived, precision is higher and to total resistance of duplex potentiometer, zero resistance, synchronously reach the duplex potentiometer electrical quantity comprehensive detector that the moving noise characteristic all can be measured by an operation.

Technical scheme of the present invention is: duplex potentiometer electrical quantity comprehensive detector of the present invention, and its design feature is: comprise the first detecting unit, the second detecting unit, informix processing unit, touch display screen, pilot lamp, hummer, power module, constant pressure source module and loudspeaker;

The first above-mentioned detecting unit is provided with first to fourth input interface end, signal input output end, first to fourth power end and the first to the 3rd constant voltage input end; The second detecting unit is provided with the first input interface end, the second input interface end, signal input output end, audible warning output terminal and the first to the 3rd power end; The informix processing unit is provided with the first detection signal communication ends, the second detection signal communication ends, man-machine interaction signal communication ends, pilot lamp control end, hummer control end and power end; Touch display screen is provided with signal communication ends and power end; Pilot lamp is provided with control signal input end and power end; Hummer is provided with control signal input end and power end; Power module is provided with power input and first to fourth power output end; The constant pressure source module is provided with power input and the first to the 3rd constant voltage output terminal; Loudspeaker are provided with signal input part;

The first detection signal communication ends of informix processing unit is electrically connected to the signal input output end two-way signaling of the first detecting unit; The second detection signal communication ends of informix processing unit is electrically connected to the signal input output end two-way signaling of the second detecting unit; The signal communication ends of touch display screen is electrically connected to the man-machine interaction signal communication ends two-way signaling of informix processing unit; The control signal input end of pilot lamp is electrically connected to the pilot lamp control end signal of informix processing unit; The control signal input end of hummer is electrically connected to the hummer control end signal of informix processing unit; The signal input part of loudspeaker is electrically connected to the audible warning output terminal of the second detecting unit;

First to fourth power end of the first detecting unit is corresponding respectively to be electrically connected to first to fourth power output end of power module; The first to the 3rd constant voltage input end of the first detecting unit is corresponding respectively to be electrically connected to the first to the 3rd constant voltage output terminal of constant pressure source module; The first to the 3rd power end of the second detecting unit is corresponding respectively to be electrically connected to the first to the 3rd power output end of power module; The power end of the power end of informix processing unit, the power end of touch display screen, pilot lamp and the power end of hummer all are electrically connected to the first power output end of power module; The power input of constant pressure source module is electrically connected to the 4th power output end of power module;

During use, the power input of power module is electrically connected to the alternating current 220V civil power; The first and second input interface ends of the first detecting unit respectively fixed terminals and the sliding end of the first potentiometer Ra of duplex potentiometer Wx corresponding and to be detected are electrically connected to; The third and fourth input interface end of the first detecting unit respectively fixed terminals and the sliding end of the second potentiometer Rb of corresponding and duplex potentiometer Wx is electrically connected to; The first input interface end of the second detecting unit is electrically connected to the sliding end of the first potentiometer Ra; The second input interface end of the second detecting unit and the second potentiometer Rb sliding end be electrically connected to; The equal ground connection of another fixed terminals of the first potentiometer Ra and the second potentiometer Rb.

Further scheme is: the first power output end output+5V power supply of above-mentioned power module; The second source output terminal output+12V power supply of power module; The 3rd power output end output-12V power supply of power module; The 4th power output end output+18V power supply of power module;

The first constant voltage output terminal output+10V constant voltage of constant pressure source module; The second constant voltage output terminal output+5V constant voltage of constant pressure source module 8; The 3rd constant voltage output terminal output+0.1V constant voltage of constant pressure source module 8.

Further scheme is: the first above-mentioned detecting unit comprises first detection module, the second detection module, A/D modular converter and Single-chip Controlling processing module;

Above-mentioned first detection module and the second detection module are provided with respectively voltage measurement control signal input end, current measurement control signal input end, the first to the 3rd range control signal input part, always hinder signal output part, zero resistance/stroke signal output terminal, open circuit signaling output terminal, first to fourth power end and the first to the 3rd constant voltage input end; The A/D modular converter is provided with first total resistance signal input part, the first zero resistance/stroke signal input ends, second and always hinders signal input part, the second zero resistance/stroke signal input ends, signal communication ends, the first to the 3rd power end; The Single-chip Controlling processing module is provided with voltage measurement control signal output terminal, current measurement control signal output terminal, the first to the 3rd range control signal output part, the first open circuit signaling input end, the second open circuit signaling input end, internal communication ends, correspondence with foreign country end and power end;

The voltage measurement control signal input end of first detection module voltage measurement control signal input end and the second detection module all is electrically connected to the voltage measurement control signal output end signal of Single-chip Controlling processing module; The current measurement control signal input end of first detection module current measurement control signal input end and the second detection module all is electrically connected to the current measurement control signal output end signal of Single-chip Controlling processing module; First detection module first is electrically connected to the first to the 3rd range control signal output part signal of Single-chip Controlling processing module to the first to the 3rd range control signal input part of the 3rd range control signal input part and the second detection module is corresponding respectively;

First total resistance signal input part of A/D modular converter and second total resistance signal input part are corresponding respectively to be electrically connected to total resistance signal output part and second total resistance signal output part signal of surveying module of first detection module; The first zero resistance/stroke signal input ends of A/D modular converter and the second zero resistance/stroke signal input end is corresponding respectively is electrically connected to zero resistance/stroke signal output terminal of first detection module and the zero resistance/stroke signal output end signal of the second detection module;

The first open circuit signaling input end of Single-chip Controlling processing module and the second open circuit signaling input end are corresponding respectively to be electrically connected to the open circuit signaling output terminal of first detection module and the open circuit signaling output end signal of the second detection module; The internal communication ends of Single-chip Controlling processing module is electrically connected to the signal communication ends two-way signaling of A/D modular converter; The correspondence with foreign country end of Single-chip Controlling processing module is the signal input output end of the first above-mentioned detecting unit;

Common the first power end that forms the first detecting unit of the first power end of the first power end of first detection module, the first power end of the second detection module, A/D modular converter and the power end of Single-chip Controlling processing module; The common second source end that forms the first detecting unit of the second source end of the second source end of first detection module, the second source end of the second detection module and A/D modular converter; Common the 3rd power end that forms the first detecting unit of the 3rd power end of the 3rd power end of first detection module, the 3rd power end of the second detection module and A/D modular converter; Common the 4th power end that forms the first detecting unit of the 4th power end of first detection module and the 4th power end of the second detection module; Common the first to the 3rd constant voltage input end that forms the first detecting unit of the first to the 3rd constant voltage input end of first detection module and the second detection module.

Further scheme is: above-mentioned first detection module comprises that the first measurement range selection module, the first detecting pattern selector switch, the first constant voltage are surveyed total resistance module, zero resistance/stroke module and the first open circuit detection module are surveyed in the first constant current;

The first measurement range selection module is provided with the first to the 3rd range control signal input part, the first voltage signal output end, second voltage signal output part, the first power end, second source end, constant voltage input end and constant voltage output terminal; The first detecting pattern selector switch has totally 14 wiring pins 1 to No. 14; The first constant voltage is surveyed total resistance module and is provided with the first voltage signal input end, second voltage signal input part, detection signal output terminal, the first power end and second source end; The first constant current is surveyed zero resistance/stroke module and is provided with constant voltage input end, current output terminal, voltage signal input end and detection signal output terminal; The first open circuit detection module is provided with constant voltage input end, signal input part and signal output part;

The first voltage signal input end that the first constant voltage is surveyed total resistance module is electrically connected to the first voltage signal output end of the first measurement range selection module; The first constant voltage is surveyed second voltage signal input part, the second voltage signal output part of the first measurement range selection module and No. 2 wiring pin conllinear of the first detecting pattern selector switch of total resistance module; The fixed terminals conllinear of No. 1 wiring pin of the first detecting pattern selector switch, No. 11 wiring pins and the first potentiometer Ra; No. 10 wiring pins of the first detecting pattern selector switch are electrically connected to the constant voltage output terminal of the first measurement range selection module; The current output terminal conllinear of zero resistance/stroke module is surveyed in No. 3 wiring pins of the first detecting pattern selector switch, No. 9 wiring pins and the first constant current; The voltage signal input end of zero resistance/stroke module and the slip terminals conllinear of the first potentiometer Ra are surveyed in No. 4 wiring pins of the first detecting pattern selector switch, No. 8 wiring pins, the first constant currents; The signal input part of the first open circuit detection module is electrically connected to the detection signal output terminal that the first constant voltage is surveyed total resistance module;

No. 12 wiring pins and No. 13 common voltage measurement control signal input ends that form above-mentioned first detection module of wiring pin of the first detecting pattern selector switch; No. 5 wiring pins of the first detecting pattern selector switch and No. 6 wiring pins form the current measurement control signal input end of first detection module jointly; The first to the 3rd range control signal input part of the first measurement range selection module is the first to the 3rd range control signal input part of first detection module; The first power end of the first measurement range selection module is the first power end of first detection module; The first constant voltage is surveyed the second source end that total the first power end that hinders module is first detection module; The first constant voltage is surveyed the 3rd power end that total second source end that hinders module is first detection module; The second source end of the first measurement range selection module is the 4th power end of first detection module; The constant voltage input end of the first measurement range selection module is the first constant voltage input end of first detection module; The constant voltage input end of the first constant current survey zero resistance/stroke module is the second constant voltage input end of first detection module; The constant voltage input end of the first open circuit detection module is the 3rd constant voltage input end of first detection module; The first constant voltage is surveyed total resistance signal output part that total detection signal output terminal that hinders module is first detection module; The detection signal output terminal of the first constant current survey zero resistance/stroke module is zero resistance/stroke signal output terminal of first detection module; The signal output part of the first open circuit detection module is the open circuit signaling output terminal of first detection module.

The second detection module of the first detecting unit comprises that the second measurement range selection module, the second detecting pattern selector switch, the second constant voltage are surveyed total resistance module, zero resistance/stroke module and the second open circuit detection module are surveyed in the second constant current; The function of each module of the second detection module is identical with the corresponding functions of modules of first detection module; The electric connection mode that each module of the second detection module is mutual and corresponding identical with first detection module with the electric connection mode of A/D modular converter and Single-chip Controlling processing module.The second detection module is electrically connected to the second potentiometer Rb while using.

Further scheme is: the first measurement range selection module of above-mentioned first detection module comprises 3 relay switches and 3 accurate reference resistances that resistance is different; The four bidirectional analog switches that the first detecting pattern selector switch is the CD4066 model; The single-chip microcomputer that the core devices of Single-chip Controlling processing module is the STC90C54RD model.

Further scheme is: the second above-mentioned detecting unit comprises the first preposition filtering and amplifying circuit, the first mid-amplifying circuit, the first peak-detector circuit, the second preposition filtering and amplifying circuit, the second mid-amplifying circuit, the second peak-detector circuit, single-chip microcomputer treatment circuit and noise sampling and power amplifier;

The first above-mentioned preposition filtering and amplifying circuit, the first mid-amplifying circuit, the first peak-detector circuit, the second preposition filtering and amplifying circuit, the second mid-amplifying circuit and the second peak-detector circuit are provided with signal input part, signal output part, the first power end and second source end respectively; The single-chip microcomputer treatment circuit is provided with first signal input end, secondary signal input end, communication ends and power end; Noise sampling and power amplifier are provided with first signal input end, secondary signal input end, signal output part, the first power end and second source end;

The signal input part of the first preposition filtering and amplifying circuit is the first input interface end of the second above-mentioned detecting unit; The signal input part of the first mid-amplifying circuit is electrically connected to the signal output part of the first preposition filtering and amplifying circuit; The signal input part of the first peak-detector circuit is electrically connected to the signal output part of the first mid-amplifying circuit;

The signal input part of the second preposition filtering and amplifying circuit is the second input interface end of the second above-mentioned detecting unit; The signal input part of the second mid-amplifying circuit is electrically connected to the signal output part of the second preposition filtering and amplifying circuit; The signal input part of the second peak-detector circuit is electrically connected to the signal output part of the second mid-amplifying circuit;

The first signal input end of single-chip microcomputer treatment circuit is electrically connected to the signal output part of the first peak-detector circuit; The secondary signal input end of single-chip microcomputer treatment circuit is electrically connected to the signal output part of the second peak-detector circuit; The communication ends of single-chip microcomputer treatment circuit is the signal input output end of the second above-mentioned detecting unit; The first signal input end of noise sampling and power amplifier is electrically connected to the signal output part of the first mid-amplifying circuit; The secondary signal input end of noise sampling and power amplifier is electrically connected to the signal output part of the second mid-amplifying circuit; The signal output part of noise sampling and power amplifier is the audible warning output terminal of the second above-mentioned detecting unit;

The power end of single-chip microcomputer treatment circuit is the first power end of the second above-mentioned detecting unit; The common second source end that forms the second above-mentioned detecting unit of the first power end of the first preposition filtering and amplifying circuit, the first mid-amplifying circuit, the first peak-detector circuit, the second preposition filtering and amplifying circuit, the second mid-amplifying circuit, the second peak-detector circuit and noise sampling and power amplifier; Common the 3rd power end that forms the second detecting unit of second source end of the first preposition filtering and amplifying circuit, the first mid-amplifying circuit, the first peak-detector circuit, the second preposition filtering and amplifying circuit, the second mid-amplifying circuit, the second peak-detector circuit and noise sampling and power amplifier.

Further scheme is: the single-chip microcomputer that the core devices of the single-chip microcomputer treatment circuit of the second above-mentioned detecting unit is the STC12C5410AD model.

Further scheme also has: the single-chip microcomputer that the core devices of above-mentioned informix processing unit is the STC12C5A60S2 model.

The present invention has positive effect: (1) duplex potentiometer electrical quantity of the present invention comprehensive detector, total resistance, zero resistance, synchronous characteristic and the moving noise Characteristics Detection that can integrate duplex potentiometer, thereby can effectively reduce checkout equipment on enterprise's production line and artificial, significantly save enterprise cost, improve enterprises production efficiency.(2) duplex potentiometer electrical quantity comprehensive detector of the present invention, by touch display screen is set, parameter presets before can detecting easily, and can show intuitively correlation technique parameter and curve in testing process, the testing staff can judge that whether index of correlation is qualified, efficient and convenient from the data and the graph direct that show.(3) duplex potentiometer electrical quantity comprehensive detector of the present invention, by hummer and pilot lamp are set, can clearly point out the detected duplex potentiometer index of testing staff whether qualified, and by loudspeaker are set, when detecting duplex potentiometer, the sound that skilled testing staff can send with the loudspeaker of hearing can judge that whether the moving noise index of duplex potentiometer is qualified, thereby can significantly increase work efficiency.(4) duplex potentiometer electrical quantity comprehensive detector of the present invention, combine with single-chip microcomputer by mimic channel, and than the checkout equipment of full mimic channel, accuracy of detection is significantly improved.

The accompanying drawing explanation

Fig. 1 is that circuit of the present invention forms schematic block diagram, in figure, has also shown and the first potentiometer Ra of detected duplex potentiometer Wx and the electrical connection of the second potentiometer Rb;

The circuit that Fig. 2 is the first detecting unit in Fig. 1 forms schematic block diagram; In figure, also shown and the first potentiometer Ra of detected duplex potentiometer Wx and the electrical connection of the second potentiometer Rb;

The circuit that Fig. 3 is the second detecting unit in Fig. 1 forms schematic block diagram;

Fig. 4 be the present invention of showing on touch display screen in Fig. 1 for detection of the time parameter surface chart is set;

Fig. 5 is the surface chart that the present invention shows on its touch display screen after setting parameter, before starting to detect;

The testing result figure that Fig. 6 shows on its touch display screen after to be the present invention detect a kind of duplex potentiometer of model.

Reference numeral in above-mentioned accompanying drawing is as follows:

The first detecting unit 1,

First detection module 11, the first measurement range selection module 111, the first detecting pattern selector switch 112, the first constant voltages are surveyed 113, the first constant currents of total resistance module and are surveyed zero resistance/stroke module 114, the first open circuit detection modules 115,

The second detection module 12, the second measurement range selection module 121, the second detecting pattern selector switch 122, the second constant voltages are surveyed 123, the second constant currents of total resistance module and are surveyed zero resistance/stroke module 124, the second open circuit detection modules 125,

A/D modular converter 13, Single-chip Controlling processing module 14;

Mid-amplifying circuit 22, the first peak-detector circuits 23 of the preposition filtering and amplifying circuit 21, the first of the second detecting unit 2, the first; Mid-amplifying circuit 25, the second peak-detector circuits 26 of the second preposition filtering and amplifying circuit 24, the second; Single-chip microcomputer treatment circuit 27, noise sampling and power amplifier 28;

Informix processing unit 3, touch display screen 4, pilot lamp 5, hummer 6, power module 7, constant pressure source module 8, loudspeaker 9;

Duplex potentiometer Wx, the first potentiometer Ra, the second potentiometer Rb.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.

(embodiment 1)

See Fig. 1, the duplex potentiometer electrical quantity comprehensive detector of the present embodiment, detection test for total resistance, zeropoint resistance, moving noise and duplex potentiometer synchronizing characteristics to duplex potentiometer Wx, duplex potentiometer Wx is comprised of the first coaxial potentiometer Ra and the second potentiometer Rb, and the first potentiometer Ra and the second potentiometer Rb all have 2 fixed terminals and slip terminals.

The duplex potentiometer electrical quantity comprehensive detector of the present embodiment, mainly be comprised of the first detecting unit 1, the second detecting unit 2, informix processing unit 3, touch display screen 4, pilot lamp 5, hummer 6, power module 7, constant pressure source module 8 and shell.Shell does not draw in Fig. 1.

The first detecting unit 1, the second detecting unit 2, informix processing unit 3, power module 7 and constant pressure source module 8 all arrange in the enclosure; Touch display screen 4, pilot lamp 5, hummer 6 and loudspeaker 9 all are arranged on shell.

The first detecting unit 1 is provided with first to fourth input interface end, signal input output end, first to fourth power end and the first to the 3rd constant voltage input end; The second detecting unit 2 is provided with the first input interface end, the second input interface end, signal input output end, audible warning output terminal and the first to the 3rd power end; Informix processing unit 3 is provided with the first detection signal communication ends, the second detection signal communication ends, man-machine interaction signal communication ends, pilot lamp control end, hummer control end and power end; Touch display screen 4 is provided with signal communication ends and power end; Pilot lamp 5 is provided with control signal input end and power end; Hummer 6 is provided with control signal input end and power end; Power module 7 is provided with power input and first to fourth power output end; Constant pressure source module 8 is provided with power input and the first to the 3rd constant voltage output terminal; Loudspeaker 9 are provided with signal input part.

When the first and second input interface ends of the first detecting unit 1 are used, fixed terminals of the first potentiometer Ra of corresponding and duplex potentiometer Wx and sliding end are electrically connected to respectively; When the third and fourth input interface end of the first detecting unit 1 is used, fixed terminals of the second potentiometer Rb of corresponding and duplex potentiometer Wx and sliding end are electrically connected to respectively; First to fourth power end of the first detecting unit 1 is corresponding respectively to be electrically connected to first to fourth power output end of power module 7; The first to the 3rd constant voltage input end of the first detecting unit 1 is corresponding respectively to be electrically connected to the first to the 3rd constant voltage output terminal of constant pressure source module 8.The equal ground connection of another fixed terminals of another fixed terminals of the first potentiometer Ra and the second potentiometer Rb.

When being used, the first input interface end of the second detecting unit 2 is electrically connected to the sliding end of the first potentiometer Ra of duplex potentiometer Wx; When being used, the second input interface end of the second detecting unit 2 is electrically connected to the sliding end of the second potentiometer Rb of duplex potentiometer Wx; The first to the 3rd power end of the second detecting unit 2 is corresponding respectively to be electrically connected to the first to the 3rd power output end of power module 7.

The first detection signal communication ends of informix processing unit 3 is electrically connected to the signal input output end two-way signaling of the first detecting unit 1; The second detection signal communication ends of informix processing unit 3 is electrically connected to the signal input output end two-way signaling of the second detecting unit 2; The power end of informix processing unit 3 is electrically connected to the first power output end of power module 7.

The signal communication ends of touch display screen 4 is electrically connected to the man-machine interaction signal communication ends two-way signaling of informix processing unit 3; The power end of touch display screen 4 is electrically connected to the first power output end of power module 7.

The control signal input end of pilot lamp 5 is electrically connected to the pilot lamp control end signal of informix processing unit 3; The power end of pilot lamp 5 is electrically connected to the first power output end of power module 7.

The control signal input end of hummer 6 is electrically connected to the hummer control end signal of informix processing unit 3; The power end of hummer 6 is electrically connected to the first power output end of power module 7.

The power input of power module 7 is electrically connected to the alternating current 220V civil power while using; The first power output end output+5V power supply of power module 7; The second source output terminal output+12V power supply of power module 7; The 3rd power output end output-12V power supply of power module 7; The 4th power output end output+18V power supply of power module 7.

The power input of constant pressure source module 8 is electrically connected to the 4th power output end of power module 7; The first constant voltage output terminal output+10V constant voltage of constant pressure source module 8; The second constant voltage output terminal output+5V constant voltage of constant pressure source module 8; The 3rd constant voltage output terminal output+0.1V constant voltage of constant pressure source module 8.

The signal input part of loudspeaker 9 is electrically connected to the audible warning output terminal of the second detecting unit 2.

See Fig. 2, the first detecting unit 1 mainly is comprised of first detection module 11, the second detection module 12, A/D modular converter 13 and Single-chip Controlling processing module 14.The first detecting unit 1 is for detection of total resistance, zero resistance and the synchronizing characteristics of the first potentiometer Ra and the second potentiometer Rb of duplex potentiometer Wx.

First detection module 11 and the second detection module 12 are provided with respectively voltage measurement control signal input end, current measurement control signal input end, the first to the 3rd range control signal input part, always hinder signal output part, zero resistance/stroke signal output terminal, open circuit signaling output terminal, first to fourth power end and the first to the 3rd constant voltage input end; A/D modular converter 13 is provided with first total resistance signal input part, the first zero resistance/stroke signal input ends, second and always hinders signal input part, the second zero resistance/stroke signal input ends, signal communication ends, the first to the 3rd power end; Single-chip Controlling processing module 14 is provided with voltage measurement control signal output terminal, current measurement control signal output terminal, the first to the 3rd range control signal output part, the first open circuit signaling input end, the second open circuit signaling input end, internal communication ends, correspondence with foreign country end and power end.

The voltage measurement control signal input end of first detection module 11 and the second detection module 12 all is electrically connected to the voltage measurement control signal output end signal of Single-chip Controlling processing module 14; The current measurement control signal input end of first detection module 11 and the second detection module 12 all is electrically connected to the current measurement control signal output end signal of Single-chip Controlling processing module 14; The first to the 3rd range control signal input part of first detection module 11 and the second detection module 12 is corresponding respectively to be electrically connected to the first to the 3rd range control signal output part signal of Single-chip Controlling processing module 14.

First total resistance signal input part of A/D modular converter 13 and second total resistance signal input part are corresponding respectively to be electrically connected to total resistance signal output part and second total resistance signal output part signal of surveying module 12 of first detection module 11; The first zero resistance/stroke signal input ends of A/D modular converter 13 and the second zero resistance/stroke signal input end is corresponding respectively is electrically connected to zero resistance/stroke signal output terminal of first detection module 11 and the zero resistance/stroke signal output end signal of the second detection module 12.

The first open circuit signaling input end of Single-chip Controlling processing module 14 and the second open circuit signaling input end are corresponding respectively to be electrically connected to the open circuit signaling output terminal of first detection module 11 and the open circuit signaling output end signal of the second detection module 12; The internal communication ends of Single-chip Controlling processing module 14 is electrically connected to the signal communication ends two-way signaling of A/D modular converter 13; The correspondence with foreign country end of Single-chip Controlling processing module 14 is the signal input output end of aforesaid the first detecting unit 1.

Common the first power end that forms the first detecting unit 1 of the power end of the first power end of the first power end of first detection module 11, the second detection module 12, the first power end of A/D modular converter 13 and Single-chip Controlling processing module 14, export+5V power supply of its first power output end that connects power module 7; The common second source end that forms the first detecting unit 1 of the second source end of the second source end of first detection module 11, the second detection module 12 and the second source end of A/D modular converter 13, export+12V power supply of its second source output terminal that connects power module 7; Common the 3rd power end that forms the first detecting unit 1 of the 3rd power end of the 3rd power end of first detection module 11, the 3rd power end of the second detection module 12 and A/D modular converter 13, export-12V power supply of its 3rd power output end that connects power module 7; Common the 4th power end that forms the first detecting unit 1 of the 4th power end of first detection module 11 and the 4th power end of the second detection module 12, export+18V power supply of its 4th power output end that connects power module 7; Common the first constant voltage input end that forms the first detecting unit 1 of the first constant voltage input end of first detection module 11 and the second detection module 12, export+10V constant voltage of its first constant voltage output terminal that connects constant pressure source module 8; Common the second constant voltage input end that forms the first detecting unit 1 of the second constant voltage input end of first detection module 11 and the second detection module 12, export+5V constant voltage of its second constant voltage output terminal that connects constant pressure source module 8; Common the 3rd constant voltage input end that forms the first detecting unit 1 of the 3rd constant voltage input end of first detection module 11 and the second detection module 12, export+0.1V constant voltage of its 3rd constant voltage output terminal that connects constant pressure source module 8.

Still see Fig. 2, the first detection module 11 of the first detecting unit 1 is mainly surveyed total resistance module 113, the first constant current survey zero resistance/stroke module 114 and the first open circuit detection module 115 by the first measurement range selection module 111, the first detecting pattern selector switch 112, the first constant voltage and is formed.

The first measurement range selection module 111 is provided with the first to the 3rd range control signal input part, the first voltage signal output end, second voltage signal output part, the first power end, second source end, constant voltage input end and constant voltage output terminal; The first constant voltage is surveyed total resistance module 113 and is provided with the first voltage signal input end, second voltage signal input part, detection signal output terminal, the first power end and second source end; The first constant current is surveyed zero resistance/stroke module 114 and is provided with constant voltage input end, current output terminal, voltage signal input end and detection signal output terminal; The first open circuit detection module 115 is provided with constant voltage input end, signal input part and signal output part.

Preferably adopt the four bidirectional analog switches that model is CD4066 in first detecting pattern selector switch 112 the present embodiment, its inside is packaged with 4 independently analog switches, each switch has input end, output terminal and control end, and it has totally 14 wiring pins 1 to No. 14; Wherein, 3 wiring pins that No. 1, No. 2 and No. 13 pin are an analog switch, No. 13 pin are control pin; 3 wiring pins that No. 10, No. 11 and No. 12 pin are an analog switch, No. 12 pin are control pin; 3 wiring pins that No. 3, No. 4 and No. 5 pin are an analog switch, No. 5 pin are control pin; 3 wiring pins that No. 6, No. 8 and No. 9 pin are an analog switch, No. 6 pin are control pin.

The first voltage signal input end that the first constant voltage is surveyed total resistance module 113 is electrically connected to the first voltage signal output end of the first measurement range selection module 111; The first constant voltage is surveyed second voltage signal input part, the second voltage signal output part of the first measurement range selection module 111 and No. 2 wiring pin conllinear of the first detecting pattern selector switch 112 of total resistance module 113; The fixed terminals conllinear of No. 1 wiring pin of the first detecting pattern selector switch 112, No. 11 wiring pins and the first potentiometer Ra; No. 10 wiring pins of the first detecting pattern selector switch 112 are electrically connected to the constant voltage output terminal of the first measurement range selection module 111; The current output terminal conllinear of zero resistance/stroke module 114 is surveyed in No. 3 wiring pins of the first detecting pattern selector switch 112, No. 9 wiring pins and the first constant current; The voltage signal input end of zero resistance/stroke module 114 and the slip terminals conllinear of the first potentiometer Ra are surveyed in No. 4 wiring pins of the first detecting pattern selector switch 112, No. 8 wiring pins, the first constant currents; The signal input part of the first open circuit detection module 115 is electrically connected to the detection signal output terminal that the first constant voltage is surveyed total resistance module 113.

No. 12 wiring pins and No. 13 common voltage measurement control signal input ends that form described first detection module 11 of wiring pin of the first detecting pattern selector switch 112; No. 5 wiring pins of the first detecting pattern selector switch 112 and No. 6 wiring pins form the current measurement control signal input end of first detection module 11 jointly; The first to the 3rd range control signal input part of the first measurement range selection module 111 is the first to the 3rd range control signal input part of first detection module 11; The first power end of the first measurement range selection module 111 is first power end (+5V) of first detection module 11; The first constant voltage is surveyed the second source end (+12V) that total the first power end that hinders module 113 is first detection module 11; The first constant voltage is surveyed the 3rd power end (12V) that total second source end that hinders module 113 is first detection module 11; The second source end of the first measurement range selection module 111 is the 4th power end (+18V) of first detection module 11; The constant voltage input end of the first measurement range selection module 111 is the first constant voltage input end (+10V constant voltage) of first detection module 11; The constant voltage input end of the first constant current survey zero resistance/stroke module 114 is the second constant voltage input end (+5V constant voltage) of first detection module 11; The constant voltage input end of the first open circuit detection module 115 is the 3rd constant voltage input end (+0.1V constant voltage) of first detection module 11; The first constant voltage is surveyed total resistance signal output part that total detection signal output terminal that hinders module 113 is first detection module 11; The detection signal output terminal of the first constant current survey zero resistance/stroke module 114 is zero resistance/stroke signal output terminal of first detection module 11; The signal output part of the first open circuit detection module 115 is the open circuit signaling output terminal of first detection module 11.

The first measurement range selection module 111 of first detection module 11 mainly comprises 3 relay switches and 3 accurate reference resistances that resistance is different, or claims 3 sampling resistors that resistance is different.1 relay switch and 1 sampling resistor form a measurement range selection unit.Single-chip Controlling processing module 14 passes through to control the break-make of corresponding relay switch, thereby selects corresponding sampling resistor to connect with the first tested potentiometer Ra, realizes the selection of range.Single-chip Controlling processing module 14 is by conducting or the disconnection detection to total resistance, zero resistance and the stroke of the first potentiometer Ra with selection of controlling the first detecting pattern selector switch 112.The first constant voltage is surveyed total resistance module 113 by the constant voltage of the first add+10V of potentiometer Ra to be measured, the electric current produced flows through the sampling resistor of the first measurement range selection module 111, and the voltage on sample resistance send Single-chip Controlling processing module 14 after after amplifying, sending A/D modular converter 13 to be changed.

The first constant current is surveyed zero resistance/stroke module 114 and is flow through the first potentiometer Ra to be measured by output 5mA steady current, and the voltage of generation send Single-chip Controlling processing module 14 again by amplifying by 13 conversions of A/D modular converter.

Whether the first open circuit detection module 115 is for detection of having the duplex potentiometer electrical quantity comprehensive detector of potentiometer to be detected and the present embodiment to connect.The detection signal of the first open circuit detection module 115 is directly exported to Single-chip Controlling processing module 14.

Still see Fig. 2, the second detection module 12 of the first detecting unit 1 is mainly surveyed total resistance module 123, the second constant current survey zero resistance/stroke module 124 and the second open circuit detection module 125 by the second measurement range selection module 121, the second detecting pattern selector switch 122, the second constant voltage and is formed.

The function of each module of the second detection module 12 is identical with the corresponding functions of modules of first detection module 11; The electric connection mode that each module of the second detection module 12 is mutual and corresponding identical with first detection module 11 with the electric connection mode of A/D modular converter 13 and Single-chip Controlling processing module 14.The second detection module 12 is electrically connected to the second potentiometer Rb while using.

The A/D modular converter 13 of the first detecting unit 1 carries out being transferred to Single-chip Controlling processing module 14 after mould/number conversion for the signal by first detection module 11 and the second detection module 12 transmission.The integrated A/D converter chip that the core devices of A/D modular converter 13 is the AD574 model.

The core devices of the Single-chip Controlling processing module 14 of the first detecting unit 1 is single-chip microcomputer, and in the present embodiment, the single-chip microcomputer of Single-chip Controlling processing module 14 preferably adopts the single-chip microcomputer that model is STC90C54RD.

The data of Single-chip Controlling processing module 14 reception A/D modular converter 13 transmission are calculated the first potentiometer Ra and total resistance of the second potentiometer Rb and the synchronizing characteristics of zero resistance and the first potentiometer Ra and the second potentiometer Rb of detected duplex potentiometer Wx:

Single-chip Controlling processing module 14 is according to formula:

Calculate total resistance of the first potentiometer Ra and the second potentiometer Rb.In formula, V _{Sampling voltage}For being surveyed that total resistance module 113 or the second constant voltage are surveyed total resistance module 123 outputs by the first constant voltage and give the voltage signal of Single-chip Controlling processing module 14 after A/D modular converter 13 being changed; R _{Sample resistance}It is the resistance value of 1 in 3 sample resistances of the first measurement range selection module 111 or the second measurement range selection module 121.

Single-chip Controlling processing module 14 is according to formula:

R = \frac{V}{5 mA}

(formula 2)

Calculate zero resistance of the first potentiometer Ra and the second potentiometer Rb.In formula, V send the voltage signal of Single-chip Controlling processing module 14 for what surveyed by the first constant current that zero resistance/stroke module 114 or the second constant current survey zero resistance/stroke module 124 outputs again through amplification, A/D modular converter 13 after changing.

While measuring the synchronizing characteristics of the first potentiometer Ra and the second potentiometer Rb, Single-chip Controlling processing module 14 is at first according to formula:

The voltage attenuation amount calculated on the first potentiometer Ra is stroke A; Voltage attenuation amount B on the second potentiometer Rb is stroke B, in formula, V send the voltage signal of Single-chip Controlling processing module 14 for what surveyed by the first constant current that zero resistance/stroke module 114 or the second constant current survey zero resistance/stroke module 124 outputs again through amplification, A/D modular converter 13 after changing, and VCC is+the 10V constant voltage;

Then, Single-chip Controlling processing module 14 calculates the synchronization discrepancy of the first potentiometer Ra and the second potentiometer Rb according to the following formula:

Synchronization discrepancy (dB)=stroke B-stroke A (formula 4)

The first potentiometer Ra that Single-chip Controlling processing module 14 will calculate and total resistance of the second potentiometer Rb, zero resistance and synchronization discrepancy (dB), with and the first open circuit detection module 115 of receiving and the detection signal of the second open circuit detection module 125 outputs send in real time in the lump informix processing unit 3.Single-chip Controlling processing module 14 implements to control to select range according to the instruction of informix processing unit 3 to the first measurement range selection module 111 and the second measurement range selection module 121, and the first detecting pattern selector switch 112 and the first detecting pattern selector switch 112 are implemented to control to select to survey total resistance or zero resistance/stroke.

Informix processing unit 3 receives the information by total resistance of the first potentiometer Ra of Single-chip Controlling processing module 14 transmission and the second potentiometer Rb, zero resistance and synchronization discrepancy (dB) in real time, will send to after treatment touch display screen 4 to show in real time.When the first open circuit detection module 115 of the first detecting unit 1 and the second open circuit detection module 125 detect while there is no potentiometer to be detected access, after informix processing unit 3 receives this signal by 14 transmission of Single-chip Controlling processing module, control the duplex potentiometer electrical quantity comprehensive detector of the present embodiment in holding state.

See Fig. 1 and Fig. 3, the second detecting unit 2 is for detection of the moving noise characteristic of the first potentiometer Ra and the second potentiometer Rb of duplex potentiometer Wx.

The second detecting unit 2 mainly is comprised of the mid-amplifying circuit 22 of the first preposition filtering and amplifying circuit 21, first, the mid-amplifying circuit 25 of the preposition filtering and amplifying circuit 24, second of the first peak-detector circuit 23, second, the second peak-detector circuit 26, single-chip microcomputer treatment circuit 27 and noise sampling and power amplifier 28.

The mid-amplifying circuit 22 of the first preposition filtering and amplifying circuit 21, first, the first peak-detector circuit 23, second mid-amplifying circuit 25 of preposition filtering and amplifying circuit 23, second and the second peak-detector circuit 26 are provided with signal input part, signal output part, the first power end and second source end respectively; Single-chip microcomputer treatment circuit 27 is provided with first signal input end, secondary signal input end, communication ends and power end; Noise sampling and power amplifier 28 are provided with first signal input end, secondary signal input end, signal output part, the first power end and second source end.

The signal input part of the first preposition filtering and amplifying circuit 21 is the first input interface end of aforesaid the second detecting unit 2, during use, with the sliding end of the first potentiometer Ra of duplex potentiometer Wx, is electrically connected to; The signal input part of the first mid-amplifying circuit 22 is electrically connected to the signal output part of the first preposition filtering and amplifying circuit 21; The signal input part of the first peak-detector circuit 23 is electrically connected to the signal output part of the first mid-amplifying circuit 22;

The signal input part of the second preposition filtering and amplifying circuit 24 is the second input interface end of aforesaid the second detecting unit 2, during use, with the sliding end of the second potentiometer Rb of duplex potentiometer Wx, is electrically connected to; The signal input part of the second mid-amplifying circuit 25 is electrically connected to the signal output part of the second preposition filtering and amplifying circuit 24; The signal input part of the second peak-detector circuit 26 is electrically connected to the signal output part of the second mid-amplifying circuit 25;

The first signal input end of single-chip microcomputer treatment circuit 27 is electrically connected to the signal output part of the first peak-detector circuit 23; The secondary signal input end of single-chip microcomputer treatment circuit 27 is electrically connected to the signal output part of the second peak-detector circuit 26; The communication ends of single-chip microcomputer treatment circuit 27 is the signal input output end of aforesaid the second detecting unit 2; The first signal input end of noise sampling and power amplifier 28 is electrically connected to the signal output part of the first mid-amplifying circuit 22; The secondary signal input end of noise sampling and power amplifier 28 is electrically connected to the signal output part of the second mid-amplifying circuit 25; The signal output part of noise sampling and power amplifier 28 is the audible warning output terminal of aforesaid the second detecting unit 2.

The power end of single-chip microcomputer treatment circuit 27 is first power end (connecing+5V) of aforesaid the second detecting unit 2; The common second source end (connecing+12V) that forms aforesaid the second detecting unit 2 of the first power end of the mid-amplifying circuit 22 of the first preposition filtering and amplifying circuit 21, first, the mid-amplifying circuit 25 of the preposition filtering and amplifying circuit 24, second of the first peak-detector circuit 23, second, the second peak-detector circuit 26 and noise sampling and power amplifier 28; The mid-amplifying circuit 22 of the first preposition filtering and amplifying circuit 21, first, the mid-amplifying circuit 25 of the preposition filtering and amplifying circuit 24, second of the first peak-detector circuit 23, second, the second peak-detector circuit 26 and noise sampling and power amplifier 28 common the 3rd power end (connecing-12V) that forms aforesaid the second detecting unit 2 of second source end.

The core devices of single-chip microcomputer treatment circuit 27 is single-chip microcomputer, and in the present embodiment, the single-chip microcomputer of single-chip microcomputer treatment circuit 27 preferably adopts the single-chip microcomputer that model is STC12C5410AD.2 road signals of 27 pairs of receptions of single-chip microcomputer treatment circuit are uploaded to informix processing unit 3 by corresponding data after being processed, and the control of the overall treatment unit 3 of receiving information.

Still see Fig. 1, the core devices of informix processing unit 3 is single-chip microcomputer, in the present embodiment, the single-chip microcomputer of informix processing unit 3 preferably adopts the High Speed Microcontroller that model is STC12C5A60S2, the instruction code of this type single-chip microcomputer fully compatible traditional 8051, but the fast 8-12 of speed is doubly, there is 60K user application space, on sheet, integrated 1280 byte RAM, have the EEPROM function, can conveniently realize arranging the power down preservation of permissible value.This type single-chip microcomputer has 2 full duplex serial communication interfaces that adopt the UART working method, for the Single-chip Controlling processing module 14 with the first detecting unit 1, with the real time bidirectional of the single-chip microcomputer treatment circuit 29 of the second detecting unit 2, communicates by letter.

Referring to Fig. 4 to Fig. 6, touch display screen 4 shows for parameter setting and information.The user arranges the test parameter permissible value by touch display screen and is kept in the single-chip microcomputer of informix processing unit 3, and informix processing unit 3 sends to the Single-chip Controlling processing module 14 of the first detecting unit 1 and the single-chip microcomputer treatment circuit 29 of the second detecting unit 2 by corresponding information; The data that touch display screen 4 transmits informix processing unit 3 simultaneously show in real time with the form of character and curve.

Pilot lamp 5 is for light warning.Pilot lamp 5 is provided with 2, and wherein 1 is green light, and another is red light.Pilot lamp 5 is controlled and whether is lighted by informix processing unit 3: after the measured data of the tested duplex potentiometer Wx that informix processing unit 3 receives and preset value compare, the specification product green light is lighted; Substandard product is put and sent out a warning and glimmer warning.In the present embodiment, pilot lamp 5 preferably adopts the LED lamp.

Hummer 6 is controlled by information overall treatment unit 3, the auditory tone cues while arranging for parameter, and underproof product is sent to different sound while detecting and reported to the police.

Loudspeaker 9 are for by sound, showing moving noise, and in testing process, sound skilled, that experienced tester sends by loudspeaker 9 can roughly be judged the moving noise of tested duplex potentiometer Wx whether in preset range.

The duplex potentiometer electrical quantity comprehensive detector (aftermentioned all is called for short detector) of the present embodiment, course of work when it uses is summarized as follows:

Detector connects the 220V civil power, and touch display screen 4 enters the interface that arranges as shown in Figure 4, and each parameter value now shown is the parameter value that pre-sets of preserving in the detector internal memory.The user is pre-seted according to the correlation parameter of tested duplex potentiometer Wx:

The user, by the button of the screen below of touch display screen 4, adopts the method for revising current data, carries out the parameter setting.Concrete grammar is: first touch " set " button, there will be a cursor below the data item numeral of the total resistance in screen top, again touch " set " button, this cursor can line down, when move to the most descending after, be circulated back to again the most up; As touched " displacement " button, cursor can move right, and after moving to low order end, circulation moves to high order end again; By upper and lower, move left and right cursor, after allowing below the numeral that cursor pointing will revise, touch " adding 1 " button, can revise cursor institute exponential quantity.After so having revised all parameters, finally touch " confirmation " button, hear that hummer 6 sends a sound of " beep ", mean that the amended parameter value that pre-sets has been stored into internal memory, instrument enters test mode, as shown in Figure 5, now the user can then carry out test operation to the test interface shown on the screen of touch display screen 4.

When duplex potentiometer Wx is electrically connected to detector (in actual the use, usually adopt the unit clamp be electrically connected to the detector duplex potentiometer Wx that pegs graft) after, the first potentiometer Ra and the second potentiometer Rb total resistance separately of duplex potentiometer Wx tested and shown immediately on the screen of touch display screen 4 to detector at first, as two total resistances are equal in the total resistance pre-seted or the deviation range allowed in total resistance, hummer 6 sends a sound prompt tone of " beep ", qualified to show total resistance; If there are one or two total resistances all to exceed the scope of pre-seting, liquid crystal highlights and shows total resistance, and hummer not sounding is given birth to, and operating personnel can't hear sound, i.e. the total resistance of known this duplex potentiometer is defective.

Then zero resistance of duplex potentiometer Wx is tested.Rotate in the counterclockwise direction duplex potentiometer Wx to the end the time, instrument is tested zeropoint resistance, on screen, the first potentiometer Ra and the second potentiometer Rb two 0 resistance measured datas of duplex potentiometer Wx appear in " leading zero resistance " data item correspondence position, zero resistance as two is all in the preset value scope, will hear that hummer sends the qualified prompt tone of " beep ", qualified to show zero resistance; As in the first potentiometer Ra of duplex potentiometer Wx and the second potentiometer Rb, have one defective, there is no sound equipment.

Next carry out synchronizing characteristics and the moving noise test of the first potentiometer Ra and the second potentiometer Rb of duplex potentiometer Wx.The user only need clockwise rotate duplex potentiometer Wx and get final product to the end.In the process of rotation, on the one hand: above the screen of touch display screen 4, the synchronization discrepancy of current actual measurement and corresponding B connection stroke appear in " synchronously " and " stroke " data item correspondence position, below screen, be " the synchronizing characteristics curve " that potentiometer turns clockwise in process and turns left from the right side and draw out, the horizontal ordinate of curve is B connection stroke, unit " dB "; Ordinate is synchronization discrepancy (the B connection is poor with A connection stroke), unit " dB ".Horizontal ordinate is upper and lower two dotted lines, means the qualified allowed band (with synchronization discrepancy, allowing preset value to change) of A, B two synchronization discrepancies, and as the curve drawn, between two dotted lines, it is synchronously qualified to illustrate; As exceed the scope of dotted line limit, mean that the trip position is synchronously overproof.Curve reflects synchronous overproof degree and overproof position intuitively.On the other hand: above screen, the current actual measurement maximal value of A, B two interlock noises appears in " moving noise " data item correspondence position; The user can also hear " moving noise " sent from loudspeaker 9 in the process of duplex potentiometer Wx rotation, and the size of sound can reflect the size of duplex potentiometer Wx moving noise intuitively.

When duplex potentiometer Wx is rotated clockwise to, the testing process of a duplex potentiometer all finishes, detector to actual measurement to all parameters carry out qualified judgement: when total resistance of duplex potentiometer, zero resistance, moving noise all conform to the parameter preset permissible value with net synchronization capability, hummer 6 sends " beep ... beep ... beep " three sound prompt tones, simultaneously, the green light flicker of pilot lamp 5, qualified to show; If any one or more parameter defective (defective data item present on the screen of touch display screen 4 highlight demonstration), hummer 6 sounding not, the red light of pilot lamp 5 is lighted flicker simultaneously, and accordingly, it is whether qualified that the testing staff is easy to just to distinguish product.Result data after the duplex potentiometer test of a certain model finishes as shown in Figure 6.

Finally, duplex potentiometer is extracted, on-screen data will be removed, and can continue to start the detection of next duplex potentiometer.

To sum up, the duplex potentiometer electrical quantity comprehensive detector of the present embodiment, total resistance, zero resistance, synchronous characteristic and the moving noise Characteristics Detection that can integrate duplex potentiometer, thereby can effectively reduce checkout equipment on enterprise's production line and artificial, significantly save enterprise cost, improve enterprises production efficiency; By touch display screen is set, the parameter presets before can detecting easily, and can show intuitively correlation technique parameter and curve in testing process, the testing staff can judge that whether index of correlation is qualified, efficient and convenient from the data and the graph direct that show; By hummer and pilot lamp are set, can clearly point out the detected duplex potentiometer index of testing staff whether qualified, improve work efficiency; By loudspeaker are set, when detecting duplex potentiometer, the sound that skilled testing staff can send with the loudspeaker of hearing can judge that whether the moving noise index of duplex potentiometer is qualified, thereby can significantly increase work efficiency; By mimic channel, with single-chip microcomputer, combine, than the checkout equipment of full mimic channel, accuracy of detection is significantly improved.

Above embodiment is the explanation to the specific embodiment of the present invention; but not limitation of the present invention; person skilled in the relevant technique without departing from the spirit and scope of the present invention; can also make various conversion and variation and obtain the corresponding technical scheme be equal to, therefore all technical schemes that are equal to all should be included into scope of patent protection of the present invention.

Claims

1. a duplex potentiometer electrical quantity comprehensive detector, is characterized in that: comprise the first detecting unit (1), the second detecting unit (2), informix processing unit (3), touch display screen (4), pilot lamp (5), hummer (6), power module (7), constant pressure source module (8) and loudspeaker (9);

Described the first detecting unit (1) is provided with first to fourth input interface end, signal input output end, first to fourth power end and the first to the 3rd constant voltage input end; The second detecting unit (2) is provided with the first input interface end, the second input interface end, signal input output end, audible warning output terminal and the first to the 3rd power end; Informix processing unit (3) is provided with the first detection signal communication ends, the second detection signal communication ends, man-machine interaction signal communication ends, pilot lamp control end, hummer control end and power end; Touch display screen (4) is provided with signal communication ends and power end; Pilot lamp (5) is provided with control signal input end and power end; Hummer (6) is provided with control signal input end and power end; Power module (7) is provided with power input and first to fourth power output end; Constant pressure source module (8) is provided with power input and the first to the 3rd constant voltage output terminal; Loudspeaker (9) are provided with signal input part;

The first detection signal communication ends of informix processing unit (3) is electrically connected to the signal input output end two-way signaling of the first detecting unit (1); The second detection signal communication ends of informix processing unit (3) is electrically connected to the signal input output end two-way signaling of the second detecting unit (2); The signal communication ends of touch display screen (4) is electrically connected to the man-machine interaction signal communication ends two-way signaling of informix processing unit (3); The control signal input end of pilot lamp (5) is electrically connected to the pilot lamp control end signal of informix processing unit (3); The control signal input end of hummer (6) is electrically connected to the hummer control end signal of informix processing unit (3); The signal input part of loudspeaker (9) is electrically connected to the audible warning output terminal of the second detecting unit (2);

First to fourth power end of the first detecting unit (1) is corresponding respectively to be electrically connected to first to fourth power output end of power module (7); The first to the 3rd constant voltage input end of the first detecting unit (1) is corresponding respectively to be electrically connected to the first to the 3rd constant voltage output terminal of constant pressure source module (8); The first to the 3rd power end of the second detecting unit (2) is corresponding respectively to be electrically connected to the first to the 3rd power output end of power module (7); The power end of the power end of the power end of the power end of informix processing unit (3), touch display screen (4), pilot lamp (5) and hummer (6) all is electrically connected to the first power output end of power module (7); The power input of constant pressure source module (8) is electrically connected to the 4th power output end of power module (7);

During use, the power input of power module (7) is electrically connected to the alternating current 220V civil power; The first and second input interface ends of the first detecting unit (1) respectively fixed terminals and the sliding end of the first potentiometer Ra of duplex potentiometer Wx corresponding and to be detected are electrically connected to; The third and fourth input interface end of the first detecting unit (1) respectively fixed terminals and the sliding end of the second potentiometer Rb of corresponding and duplex potentiometer Wx is electrically connected to; The first input interface end of the second detecting unit (2) is electrically connected to the sliding end of the first potentiometer Ra; The second input interface end of the second detecting unit (2) and the second potentiometer Rb sliding end be electrically connected to; The equal ground connection of another fixed terminals of the first potentiometer Ra and the second potentiometer Rb.

2. duplex potentiometer electrical quantity comprehensive detector according to claim 1, is characterized in that: the first power output end output+5V power supply of described power module (7); The second source output terminal output+12V power supply of power module (7); The 3rd power output end output-12V power supply of power module (7); The 4th power output end output+18V power supply of power module (7);

The first constant voltage output terminal output+10V constant voltage of constant pressure source module (8); The second constant voltage output terminal output+5V constant voltage of constant pressure source module 8; The 3rd constant voltage output terminal output+0.1V constant voltage of constant pressure source module 8.

3. duplex potentiometer electrical quantity comprehensive detector according to claim 1, it is characterized in that: described the first detecting unit (1) comprises first detection module (11), the second detection module (12), A/D modular converter (13) and Single-chip Controlling processing module (14);

Described first detection module (11) and the second detection module (12) are provided with respectively voltage measurement control signal input end, current measurement control signal input end, the first to the 3rd range control signal input part, always hinder signal output part, zero resistance/stroke signal output terminal, open circuit signaling output terminal, first to fourth power end and the first to the 3rd constant voltage input end; A/D modular converter (13) is provided with first total resistance signal input part, the first zero resistance/stroke signal input ends, second and always hinders signal input part, the second zero resistance/stroke signal input ends, signal communication ends, the first to the 3rd power end; Single-chip Controlling processing module (14) is provided with voltage measurement control signal output terminal, current measurement control signal output terminal, the first to the 3rd range control signal output part, the first open circuit signaling input end, the second open circuit signaling input end, internal communication ends, correspondence with foreign country end and power end;

The voltage measurement control signal input end of first detection module (11) voltage measurement control signal input end and the second detection module (12) all is electrically connected to the voltage measurement control signal output end signal of Single-chip Controlling processing module (14); The current measurement control signal input end of first detection module (11) current measurement control signal input end and the second detection module (12) all is electrically connected to the current measurement control signal output end signal of Single-chip Controlling processing module (14); The first to the 3rd range control signal input part of first detection module (11) first to the 3rd range control signal input parts and the second detection module (12) is corresponding respectively to be electrically connected to the first to the 3rd range control signal output part signal of Single-chip Controlling processing module (14);

First total resistance signal input part of A/D modular converter (13) and second total resistance signal input part are corresponding respectively to be electrically connected to total resistance signal output part and second total resistance signal output part signal of surveying module (12) of first detection module (11); The first zero resistance/stroke signal input ends of A/D modular converter (13) and the second zero resistance/stroke signal input end is corresponding respectively is electrically connected to zero resistance/stroke signal output terminal of first detection module (11) and the zero resistance/stroke signal output end signal of the second detection module (12);

The first open circuit signaling input end of Single-chip Controlling processing module (14) and the second open circuit signaling input end are corresponding respectively to be electrically connected to the open circuit signaling output terminal of first detection module (11) and the open circuit signaling output end signal of the second detection module (12); The internal communication ends of Single-chip Controlling processing module (14) is electrically connected to the signal communication ends two-way signaling of A/D modular converter (13); The correspondence with foreign country end of Single-chip Controlling processing module (14) is the signal input output end of described the first detecting unit (1);

Common the first power end that forms the first detecting unit (1) of the power end of the first power end of the first power end of the first power end of first detection module (11), the second detection module (12), A/D modular converter (13) and Single-chip Controlling processing module (14); The common second source end that forms the first detecting unit (1) of the second source end of the second source end of the second source end of first detection module (11), the second detection module (12) and A/D modular converter (13); Common the 3rd power end that forms the first detecting unit (1) of the 3rd power end of the 3rd power end of first detection module (11), the 3rd power end of the second detection module (12) and A/D modular converter (13); Common the 4th power end that forms the first detecting unit (1) of the 4th power end of first detection module (11) and the 4th power end of the second detection module (12); Common the first to the 3rd constant voltage input end that forms the first detecting unit (1) of the first to the 3rd constant voltage input end of first detection module (11) and the second detection module (12).

4. duplex potentiometer electrical quantity comprehensive detector according to claim 3 is characterized in that: described first detection module (11) comprises that the first measurement range selection module (111), the first detecting pattern selector switch (112), the first constant voltage survey total resistance module (113), the first constant current and survey zero resistance/stroke module (114) and first detection module (115) of opening a way;

The first measurement range selection module (111) is provided with the first to the 3rd range control signal input part, the first voltage signal output end, second voltage signal output part, the first power end, second source end, constant voltage input end and constant voltage output terminal; The first detecting pattern selector switch (112) has totally 14 wiring pins 1 to No. 14; The first constant voltage is surveyed total resistance module (113) and is provided with the first voltage signal input end, second voltage signal input part, detection signal output terminal, the first power end and second source end; The first constant current is surveyed zero resistance/stroke module (114) and is provided with constant voltage input end, current output terminal, voltage signal input end and detection signal output terminal; The first open circuit detection module (115) is provided with constant voltage input end, signal input part and signal output part;

The first voltage signal input end that the first constant voltage is surveyed total resistance module (113) is electrically connected to the first voltage signal output end of the first measurement range selection module (111); The first constant voltage is surveyed second voltage signal input part, the second voltage signal output part of the first measurement range selection module (111) and No. 2 wiring pin conllinear of the first detecting pattern selector switch (112) of total resistance module (113); The fixed terminals conllinear of No. 1 wiring pin of the first detecting pattern selector switch (112), No. 11 wiring pins and the first potentiometer Ra; No. 10 wiring pins of the first detecting pattern selector switch (112) are electrically connected to the constant voltage output terminal of the first measurement range selection module (111); The current output terminal conllinear of zero resistance/stroke module (114) is surveyed in No. 3 wiring pins of the first detecting pattern selector switch (112), No. 9 wiring pins and the first constant current; The voltage signal input end of zero resistance/stroke module (114) and the slip terminals conllinear of the first potentiometer Ra are surveyed in No. 4 wiring pins of the first detecting pattern selector switch (112), No. 8 wiring pins, the first constant currents; The signal input part of the first open circuit detection module (115) is electrically connected to the detection signal output terminal that the first constant voltage is surveyed total resistance module (113);

No. 12 wiring pins and No. 13 common voltage measurement control signal input ends that form described first detection module (11) of wiring pin of the first detecting pattern selector switch (112); No. 5 wiring pins of the first detecting pattern selector switch (112) and No. 6 wiring pins form the current measurement control signal input end of first detection module (11) jointly; The first to the 3rd range control signal input part of the first measurement range selection module (111) is the first to the 3rd range control signal input part of first detection module (11); The first power end of the first measurement range selection module (111) is the first power end of first detection module (11); The first constant voltage is surveyed the second source end that total the first power end that hinders module (113) is first detection module (11); The first constant voltage is surveyed the 3rd power end that total second source end that hinders module (113) is first detection module (11); The second source end of the first measurement range selection module (111) is the 4th power end of first detection module (11); The constant voltage input end of the first measurement range selection module (111) is the first constant voltage input end of first detection module (11); The constant voltage input end of the first constant current survey zero resistance/stroke module (114) is the second constant voltage input end of first detection module (11); The constant voltage input end of the first open circuit detection module (115) is the 3rd constant voltage input end of first detection module (11); The first constant voltage is surveyed total resistance signal output part that total detection signal output terminal that hinders module (113) is first detection module (11); The detection signal output terminal of the first constant current survey zero resistance/stroke module (114) is zero resistance/stroke signal output terminal of first detection module (11); The signal output part of the first open circuit detection module (115) is the open circuit signaling output terminal of first detection module (11).

5. duplex potentiometer electrical quantity comprehensive detector according to claim 4, it is characterized in that: the first measurement range selection module (111) of described first detection module (11) comprises 3 relay switches and 3 accurate reference resistances that resistance is different; The four bidirectional analog switches that the first detecting pattern selector switch (112) is the CD4066 model; The single-chip microcomputer that the core devices of Single-chip Controlling processing module (14) is the STC90C54RD model.

6. duplex potentiometer electrical quantity comprehensive detector according to claim 1 is characterized in that: described the second detecting unit (2) comprises the first preposition filtering and amplifying circuit (21), the first mid-amplifying circuit (22), the first peak-detector circuit (23), the second preposition filtering and amplifying circuit (24), the second mid-amplifying circuit (25), the second peak-detector circuit (26), single-chip microcomputer treatment circuit (27) and noise sampling and power amplifier (28);

The described first preposition filtering and amplifying circuit (21), the first mid-amplifying circuit (22), the first peak-detector circuit (23), the second preposition filtering and amplifying circuit (24), the second mid-amplifying circuit (25) and the second peak-detector circuit (26) are provided with signal input part, signal output part, the first power end and second source end respectively; Single-chip microcomputer treatment circuit (27) is provided with first signal input end, secondary signal input end, communication ends and power end; Noise sampling and power amplifier (28) are provided with first signal input end, secondary signal input end, signal output part, the first power end and second source end;

The signal input part of the first preposition filtering and amplifying circuit (21) is the first input interface end of described the second detecting unit (2); The signal input part of the first mid-amplifying circuit (22) is electrically connected to the signal output part of the first preposition filtering and amplifying circuit (21); The signal input part of the first peak-detector circuit (23) is electrically connected to the signal output part of the first mid-amplifying circuit (22);

The signal input part of the second preposition filtering and amplifying circuit (24) is the second input interface end of described the second detecting unit (2); The signal input part of the second mid-amplifying circuit (25) is electrically connected to the signal output part of the second preposition filtering and amplifying circuit (24); The signal input part of the second peak-detector circuit (26) is electrically connected to the signal output part of the second mid-amplifying circuit (25);

The first signal input end of single-chip microcomputer treatment circuit (27) is electrically connected to the signal output part of the first peak-detector circuit (23); The secondary signal input end of single-chip microcomputer treatment circuit (27) is electrically connected to the signal output part of the second peak-detector circuit (26); The communication ends of single-chip microcomputer treatment circuit (27) is the signal input output end of described the second detecting unit (2); The first signal input end of noise sampling and power amplifier (28) is electrically connected to the signal output part of the first mid-amplifying circuit (22); The secondary signal input end of noise sampling and power amplifier (28) is electrically connected to the signal output part of the second mid-amplifying circuit (25); The signal output part of noise sampling and power amplifier (28) is the audible warning output terminal of described the second detecting unit (2);

The power end of single-chip microcomputer treatment circuit (27) is the first power end of described the second detecting unit (2); The common second source end that forms described the second detecting unit (2) of the first power end of the first preposition filtering and amplifying circuit (21), the first mid-amplifying circuit (22), the first peak-detector circuit (23), the second preposition filtering and amplifying circuit (24), the second mid-amplifying circuit (25), the second peak-detector circuit (26) and noise sampling and power amplifier (28); Common the 3rd power end that forms the second detecting unit (2) of second source end of the first preposition filtering and amplifying circuit (21), the first mid-amplifying circuit (22), the first peak-detector circuit (23), the second preposition filtering and amplifying circuit (24), the second mid-amplifying circuit (25), the second peak-detector circuit (26) and noise sampling and power amplifier (28).

7. duplex potentiometer electrical quantity comprehensive detector according to claim 6, is characterized in that: the single-chip microcomputer that the core devices of the single-chip microcomputer treatment circuit (27) of described the second detecting unit (2) is the STC12C5410AD model.

8. duplex potentiometer electrical quantity comprehensive detector according to claim 1, is characterized in that: the single-chip microcomputer that the core devices of described informix processing unit (3) is the STC12C5A60S2 model.