CN104898000B - Duplex potentiometer always hinders and moving noise detector - Google Patents
Duplex potentiometer always hinders and moving noise detector Download PDFInfo
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Abstract
The present invention provides a kind of duplex potentiometer always resistance and moving noise detector, including for detect total resistance of duplex potentiometer, the first detection unit of zero resistance and synchronizing characteristics, the second detection unit for detecting duplex potentiometer moving noise, for controlling and the constant pressure source module of the informix processing unit of information processing, touch display screen show for parameter setting and testing result, the indicator lamp for indicating detection state and buzzer, the loudspeaker for listening moving noise and offer constant voltage；First, second detection unit, touch display screen electrically connect with informix processing unit two-way signaling；Indicator lamp and buzzer electrically connect with informix processing unit signal；Loudspeaker electrically connect with the second detection unit signal.The present invention integrates total resistance of duplex potentiometer, zero resistance, synchronization and moving noise Characteristics Detection, and accuracy of detection is higher, easy to use, can effectively reduce the testing cost of duplex potentiometer manufacturing enterprise, improve production efficiency.
Description
The application be Application No. 201310344080.8, the applying date be August in 2013 8, invention and created name is " double
The divisional application of the application for a patent for invention of connection potentiometer electrical parameter comprehensive detector ".
Technical field
The present invention relates to potentiometer detection device technical field, and in particular to a kind of always resistance of duplex potentiometer and moving noise inspection
Survey instrument.
Background technology
The manufacturing enterprise of duplex potentiometer needs total resistance, zero resistance, synchronization to duplex potentiometer special in production line
The electrical parameter such as property and moving noise characteristic is detected.At present, enterprise is detected to the electrical parameter of duplex potentiometer, adopts mostly
The different electrical parameters of duplex potentiometer are tested respectively with multiple stations.Such as：First station detects duplex potentiometer
Total resistance and zero resistance；Second station detects the synchronizing characteristics of duplex potentiometer with synchronizing characteristics tester；3rd station is with 2
Moving noise of moving noise tester detection duplex potentiometer etc..The mode that such a electrical parameter to duplex potentiometer is detected is deposited
Obvious the defects of and deficiency：When need to tester it is more, and the pointer tester of mostly pure analog circuit, essence
Spend relatively low；Second, the tester on each station is required for accordingly being measured duplex potentiometer insertion special fixture, after
Extracting duplex potentiometer again hands over subsequent processing to continue to detect, and seriously reduces work efficiency；Third, recruitment is more, added to enterprise larger
Human cost burden.
The content of the invention
The purpose of the present invention is：Overcome the deficiencies in the prior art, there is provided a kind of cost is relatively low, directly perceived, precision easy to use
Higher and to duplex potentiometer total resistance, zero resistance, synchronization and moving noise characteristic can all be measured double by an operation
Join potentiometer always resistance and moving noise detector.
The technical scheme is that：The duplex potentiometer of the present invention always hinders and moving noise detector, and it is structurally characterized in that：
Including the first detection unit, the second detection unit, informix processing unit, touch display screen, indicator lamp, buzzer, power supply
Module, constant pressure source module and loudspeaker；
The first above-mentioned detection 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 pressure input；Second detection unit is provided with the first input interface end, the second input interface end, letter
Number input/output terminal, audible warning output end and the first to the 3rd power end；Informix processing unit is provided with the first detection
Signal communication end, the second detection signal communication ends, man-machine interaction signal communication end, indicator lamp control terminal, buzzer control terminal and
Power end；Touch display screen is provided with signal communication end and power end；Indicator lamp is provided with control signal input and power end；Buzzing
Device is provided with control signal input and power end；Power module is provided with power input and first to fourth power output end；It is permanent
Potential source module is provided with power input and the first to the 3rd constant pressure output end；Loudspeaker are provided with signal input part；
The first detection signal communication ends of informix processing unit are double with the signal input output end of the first detection unit
Electrically connected to signal；The signal input of second detection signal communication ends of informix processing unit and the second detection unit is defeated
Go out to hold two-way signaling to electrically connect；The signal communication end of touch display screen and the man-machine interaction signal communication of informix processing unit
Hold two-way signaling electrical connection；The control signal input of indicator lamp and the indicator lamp control end signal electricity of informix processing unit
Connection；The control signal input of buzzer electrically connects with the buzzer control end signal of informix processing unit；Loudspeaker
Signal input part electrically connects with the audible warning output end of the second detection unit；
First to fourth power end of the first detection unit corresponds to exported with first to fourth power supply of power module respectively
End electrical connection；The first of first detection unit corresponds to the first to the 3rd perseverance with constant pressure source module to the 3rd constant pressure input respectively
Press output end electrical connection；The first of second detection unit corresponds to the first to the 3rd electricity with power module to the 3rd power end respectively
Source output terminal electrically connects；The power end of informix processing unit, the power end of touch display screen, indicator lamp power end and
The power end of buzzer electrically connects with the first power output end of power module；The power input and power supply of constant pressure source module
The 4th power output end electrical connection of module；
In use, the power input of power module electrically connects with alternating current 220V civil power；First He of the first detection unit
Second input interface end correspond to respectively with duplex potentiometer Wx to be detected a first potentiometer Ra fixed terminals and
Sliding end electrically connects；Third and fourth input interface end of the first detection unit corresponds to the second electricity with duplex potentiometer Wx respectively
A position device Rb fixed terminals and sliding end electrical connection；First input interface end of the second detection unit and the first potentiometer
Ra sliding end electrical connection；Second input interface end of the second detection unit electrically connects with the second potentiometer Rb sliding end；
First potentiometer Ra and the second potentiometer Rb another fixed terminals are grounded.
Further scheme is：First power output end output+5V power supplys of above-mentioned power module；The of power module
Two power output end output+12V power supplys；3rd power output end output -12V power supplys of power module；The 4th of power module
Power output end output+18V power supplys；
First constant pressure output end output+10V constant voltages of constant pressure source module；The second constant pressure output of constant pressure source module 8
Hold output+5V constant voltages；3rd constant pressure output end output+0.1V constant voltages of constant pressure source module 8.
Further scheme is：The first above-mentioned detection unit includes first detection module, the second detection module, A/D and turned
Change the mold block and single-chip microcomputer control process module；
Above-mentioned first detection module and the second detection module are respectively provided with voltage measurement control signal input, electric current
Measuring control signal input, the first to the 3rd range control signal input part, always hinder signal output part, zero resistance/stroke signal
Output end, open circuit signaling output end, first to fourth power end and the first to the 3rd constant pressure input；A/D modular converters are set
There are first total resistance signal input part, one zero resistances/stroke signal input, second total resistance signal input part, 20 resistances/stroke
Signal input part, signal communication end, the first to the 3rd power end；Single-chip microcomputer control process module is provided with voltage measurement control signal
Output end, current measurement control signal output, the first to the 3rd range control signal output part, the input of the first open circuit signaling
End, the second open circuit signaling input, internal communication ends, correspondence with foreign country end and power end；
First detection module voltage measurement control signal input and the voltage measurement control signal of the second detection module are defeated
Enter end to electrically connect with the voltage measurement control signal output signal of single-chip microcomputer control process module；First detection module electric current
The current measurement control signal input of measuring control signal input and the second detection module with single-chip microcomputer control process mould
The current measurement control signal output signal electrical connection of block；The range control signal input part of first detection module first to the 3rd
Respectively corresponded to and single-chip microcomputer control process module with the first to the 3rd range control signal input part of the second detection module
First to the 3rd range control signal output end signal electrically connects；
The total resistance signal input part of the first of A/D modular converters and second total resistance signal input part correspond to and the first detection respectively
Total resistance signal output part of module and the second total resistance signal output end signal for surveying module electrically connect；The first of A/D modular converters
Zero resistance/stroke signal input and 20 resistances/stroke signal input correspond to zero resistance/stroke with first detection module respectively
Zero resistance of signal output part and the second detection module/stroke signal output end signal electrical connection；
The the first open circuit signaling input and the second open circuit signaling input of single-chip microcomputer control process module respectively correspond to
The open circuit signaling output end of first detection module and the open circuit signaling output end signal electrical connection of the second detection module；Single-chip microcomputer control
The internal communication ends of processing module processed electrically connect with the signal communication end two-way signaling of A/D modular converters；Single-chip microcomputer control process
The correspondence with foreign country end of module is the signal input output end of the first above-mentioned detection unit；
First power end of first detection module, the first power end of the second detection module, the first electricity of A/D modular converters
The power end of source and single-chip microcomputer control process module collectively forms the first power end of the first detection unit；First detection mould
The second source end at the second source end of block, the second source end of the second detection module and A/D modular converters collectively forms
The second source end of one detection unit；3rd power end of first detection module, the 3rd power end of the second detection module and
3rd power end of A/D modular converters collectively forms the 3rd power end of the first detection unit；4th electricity of first detection module
4th power end of source and the second detection module collectively forms the 4th power end of the first detection unit；First detection module and
The first of second detection module to the 3rd constant pressure input collectively forms the first to the 3rd constant pressure input of the first detection unit.
Further scheme is：Above-mentioned first detection module includes the first measurement range selection module, the first detection pattern is selected
Select switch, the first constant pressure surveys total resistance module, zero resistance/stroke module is surveyed in the first constant current and the first open circuit detection module；
First measurement range selection module be provided with the first to the 3rd range control signal input part, first voltage signal output part,
Second voltage signal output part, the first power end, second source end, constant pressure input and constant pressure output end；First detection pattern
Selecting switch has 1 to No. 14 totally 14 wiring pin；First constant pressure surveys total resistance module and is provided with first voltage signal input part, second
Voltage signal inputs, detection signal output end, the first power end and second source end；Zero resistance/stroke module is surveyed in first constant current
Provided with constant pressure input, current output terminal, voltage signal inputs and detection signal output end；First open circuit detection module is provided with
Constant pressure input, signal input part and signal output part；
First constant pressure surveys the first voltage signal input part of total resistance module and the first voltage of the first measurement range selection module is believed
The electrical connection of number output end；First constant pressure surveys the second voltage signal input part of total resistance module, the second of the first measurement range selection module
Voltage signal output end and No. 2 wiring pins of the first detection pattern selecting switch are conllinear；The 1 of first detection pattern selecting switch
One fixed terminals of number wiring pin, No. 11 wiring pins and the first potentiometer Ra are conllinear；First detection pattern selecting switch
No. 10 wiring pins electrically connected with the constant pressure output end of the first measurement range selection module；No. 3 of first detection pattern selecting switch connect
The current output terminal that zero resistance/stroke module is surveyed in stitch, No. 9 wiring pins and the first constant current is conllinear；The selection of first detection pattern is opened
No. 4 wiring pins, No. 8 wiring pins, the voltage signal inputs and the first potentiometer of the first constant current survey zero resistance/stroke module closed
Ra slip terminals are conllinear；The signal input part of first open circuit detection module and the first constant pressure survey the detection signal of total resistance module
Output end electrically connects；
No. 12 wiring pins and No. 13 wiring pins of first detection pattern selecting switch collectively form the first above-mentioned detection mould
The voltage measurement control signal input of block；No. 5 wiring pins and No. 6 wiring pins of first detection pattern selecting switch collectively form
The current measurement control signal input of first detection module；First to the 3rd range control signal of the first measurement range selection module
Input is the first to the 3rd range control signal input part of first detection module；First electricity of the first measurement range selection module
Source is the first power end of first detection module；The first power end that first constant pressure surveys total resistance module is the first detection mould
The second source end of block；The second source end that first constant pressure surveys total resistance module is the 3rd power end of first detection module；The
The second source end of one measurement range selection module is the 4th power end of first detection module；The constant pressure of first measurement range selection module
Input is the first constant pressure input of first detection module；First constant current survey zero resistance/stroke module constant pressure input be
For the second constant pressure input of first detection module；The constant pressure input of first open circuit detection module is first detection module
3rd constant pressure input；The detection signal output end that first constant pressure surveys total resistance module is that total resistance signal of first detection module is defeated
Go out end；The detection signal output end that zero resistance/stroke module is surveyed in first constant current is that zero resistance/stroke signal of first detection module is defeated
Go out end；The signal output part of first open circuit detection module is the open circuit signaling output end of first detection module.
Second detection module of the first detection unit include the second measurement range selection module, the second detection pattern selecting switch,
Second constant pressure surveys total resistance module, zero resistance/stroke module is surveyed in the second constant current and the second open circuit detection module；Second detection module it is each
Corresponding functions of modules is identical with first detection module for the function of module；Each module of second detection module is mutual to be electrically connected
Connect mode and and first detection module phase corresponding with the electric connection mode of A/D modular converters and single-chip microcomputer control process module
Together.Second detection module electrically connects when using with the second potentiometer Rb.
Further scheme is：First measurement range selection module of above-mentioned first detection module includes 3 relay switches
The accurate reference resistance different with 3 resistances；First detection pattern selecting switch is four bilateral analog switch of CD4066 models；
The core devices of single-chip microcomputer control process module are the single-chip microcomputer of STC90C54RD models.
Further scheme is：The second above-mentioned detection unit includes putting in the first preposition filtering and amplifying circuit, first
Amplifying circuit, the second peak detection electricity are put in big circuit, the first peak-detector circuit, the second preposition filtering and amplifying circuit, second
Road, single-chip microcomputer process circuit and noise samples and power amplifier；
Amplifying circuit, the first peak-detector circuit, second preposition is put in above-mentioned the first preposition filtering and amplifying circuit, first
Amplifying circuit and the second peak-detector circuit are put in filtering and amplifying circuit, second and is respectively provided with signal input part, signal output
End, the first power end and second source end；Single-chip microcomputer process circuit is provided with the first signal input part, secondary signal input, led to
Believe end and power end；Noise samples and power amplifier be provided with the first signal input part, secondary signal input, signal output part,
First power end and second source end；
The signal input part of first preposition filtering and amplifying circuit is the first input interface of the second above-mentioned detection unit
End；The signal input part that amplifying circuit is put in first electrically connects with the signal output part of the first preposition filtering and amplifying circuit；First
The signal input part of peak-detector circuit electrically connects with putting the signal output part of amplifying circuit in first；
The signal input part of second preposition filtering and amplifying circuit is the second input interface of the second above-mentioned detection unit
End；The signal input part that amplifying circuit is put in second electrically connects with the signal output part of the second preposition filtering and amplifying circuit；Second
The signal input part of peak-detector circuit electrically connects with putting the signal output part of amplifying circuit in second；
First signal input part of single-chip microcomputer process circuit electrically connects with the signal output part of the first peak-detector circuit；It is single
The secondary signal input of piece machine process circuit electrically connects with the signal output part of the second peak-detector circuit；Single-chip microcomputer processing electricity
The communication ends on road are the signal input output end of the second above-mentioned detection unit；First signal of noise samples and power amplifier
Input electrically connects with putting the signal output part of amplifying circuit in first；The secondary signal input of noise samples and power amplifier
Electrically connected with the signal output part that amplifying circuit is put in second；The signal output part of noise samples and power amplifier is above-mentioned
The audible warning output end of second detection unit；
The power end of single-chip microcomputer process circuit is the first power end of the second above-mentioned detection unit；First preposition amplification
Put in amplifying circuit, the first peak-detector circuit, the second preposition filtering and amplifying circuit, second and put greatly in filter circuit, first
First power end of circuit, the second peak-detector circuit and noise samples and power amplifier collectively forms the second above-mentioned detection
The second source end of unit；Amplifying circuit, the first peak-detector circuit, second are put in first preposition filtering and amplifying circuit, first
The of amplifying circuit, the second peak-detector circuit and noise samples and power amplifier is put in preposition filtering and amplifying circuit, second
Two power ends collectively form the 3rd power end of the second detection unit.
Further scheme is：The core devices of the single-chip microcomputer process circuit of the second above-mentioned detection unit are
The single-chip microcomputer of STC12C5410AD models.
Further scheme also has：The core devices of above-mentioned informix processing unit are STC12C5A60S2 models
Single-chip microcomputer.
The present invention has positive effect：（1）The duplex potentiometer of the present invention always hinders and moving noise detector, can collect double
Join total resistance, zero resistance, synchronous characteristic and the moving noise Characteristics Detection of potentiometer in one, so as to efficiently reduce enterprise's production
Detection device on line and artificial, significantly saves entreprise cost, improves enterprises production efficiency.（2）The duplex potentiometer of the present invention
Total resistance and moving noise detector, by setting touch display screen, it is convenient to the parameter presets before being detected, and can be directly perceived
Ground shows associated technical parameters and curve in detection process, and testing staff can judge related refer to from the data of display to graph direct
Whether mark is qualified, efficient and convenient.（3）The present invention duplex potentiometer always resistance and moving noise detector, by set buzzer and
Indicator lamp, whether the duplex potentiometer index that can clearly prompt testing staff to be detected is qualified, and by setting loudspeaker, is examining
When surveying duplex potentiometer, the sound that skilled testing staff can send with the loudspeaker heard can determine whether that the dynamic of duplex potentiometer is made an uproar
Whether sound index is qualified, so as to greatly improve operating efficiency.（4）The always resistance of the duplex potentiometer of the present invention and moving noise detection
Instrument, it is combined by analog circuit with single-chip microcomputer, than the detection device of full analog circuit, accuracy of detection, which has, significantly to be carried
It is high.
Brief description of the drawings
The circuit that Fig. 1 is the present invention forms schematic block diagram, and the of the duplex potentiometer Wx that also show and be detected in figure
One potentiometer Ra and the second potentiometer Rb electrical connection；
Fig. 2 is that the circuit of the first detection unit in Fig. 1 forms schematic block diagram；The duplex that also show and be detected in figure
Potentiometer Wx the first potentiometer Ra and the second potentiometer Rb electrical connection；
Fig. 3 is that the circuit of the second detection unit in Fig. 1 forms schematic block diagram；
Fig. 4 is parameter setting surface chart when the present invention shown in Fig. 1 in touch display screen is used to detect；
Fig. 5 be the present invention after parameter is set, start the surface chart that is shown before detection in its touch display screen；
Fig. 6 is the detection knot shown after the present invention detects to a kind of duplex potentiometer of model in its touch display screen
Fruit is schemed.
Reference in above-mentioned accompanying drawing is as follows：
First detection unit 1,
First detection module 11, the first measurement range selection module 111, the first detection pattern selecting switch 112, the first constant pressure are surveyed
Total resistance module 113, the first constant current survey zero resistance/stroke module 114, the first open circuit detection module 115,
Second detection module 12, the second measurement range selection module 121, the second detection pattern selecting switch 122, the second constant pressure are surveyed
Total resistance module 123, the second constant current survey zero resistance/stroke module 124, the second open circuit detection module 125,
A/D modular converters 13, single-chip microcomputer control process module 14；
Second detection unit 2, the first preposition filtering and amplifying circuit 21, amplifying circuit 22, the first peak detection is put in first
Circuit 23；Second preposition filtering and amplifying circuit 24, amplifying circuit 25, the second peak-detector circuit 26 are put in second；At single-chip microcomputer
Manage circuit 27, noise samples and power amplifier 28；
Informix processing unit 3, touch display screen 4, indicator lamp 5, buzzer 6, power module 7, constant pressure source module 8,
Loudspeaker 9；
Duplex potentiometer Wx, the first potentiometer Ra, the second potentiometer Rb.
Embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
（Embodiment 1）
See Fig. 1, the duplex potentiometer of the present embodiment always hinders and moving noise detector, for the total of duplex potentiometer Wx
Resistance, the detection test of zeropoint resistance, moving noise and duplex potentiometer synchronizing characteristics, duplex potentiometer Wx is by the first coaxial current potential
Device Ra and the second potentiometer Rb compositions, the first potentiometer Ra and the second potentiometer Rb are respectively provided with 2 fixed terminals and a cunning
Dynamic terminals.
The duplex potentiometer of the present embodiment always hinders and moving noise detector, is mainly detected by the first detection unit 1, second single
Member 2, informix processing unit 3, touch display screen 4, indicator lamp 5, buzzer 6, power module 7, constant pressure source module 8 and shell
Composition.Shell is not drawn into Fig. 1.
First detection unit 1, the second detection unit 2, informix processing unit 3, power module 7 and constant pressure source module 8
It is arranged in shell；Touch display screen 4, indicator lamp 5, buzzer 6 and loudspeaker 9 are arranged on shell.
First detection unit 1 is provided with first to fourth input interface end, signal input output end, first to fourth power end
With the first to the 3rd constant pressure input；Second detection unit 2 is defeated provided with the first input interface end, the second input interface end, signal
Enter output end, audible warning output end and the first to the 3rd power end；Informix processing unit 3 is provided with first detection signal
Communication ends, the second detection signal communication ends, man-machine interaction signal communication end, indicator lamp control terminal, buzzer control terminal and power supply
End；Touch display screen 4 is provided with signal communication end and power end；Indicator lamp 5 is provided with control signal input and power end；Buzzer
6 are provided with control signal input and power end；Power module 7 is provided with power input and first to fourth power output end；It is permanent
Potential source module 8 is provided with power input and the first to the 3rd constant pressure output end；Loudspeaker 9 are provided with signal input part.
First with duplex potentiometer Wx is corresponded to when first and second input interface ends of the first detection unit 1 use respectively
A potentiometer Ra fixed terminals and sliding end electrical connection；Third and fourth input interface end of the first detection unit 1 makes
Used time corresponds to electrically connected with duplex potentiometer Wx the second potentiometer Rb a fixed terminals and sliding end respectively；First inspection
First to fourth power end of survey unit 1 corresponds to respectively to be electrically connected with first to fourth power output end of power module 7；First
The first of detection unit 1 corresponds to and the first to the 3rd constant pressure output end of constant pressure source module 8 electricity respectively to the 3rd constant pressure input
Connection.First potentiometer Ra another fixed terminals and the second potentiometer Rb another fixed terminals are grounded.
Slip during the first input interface end use of the second detection unit 2 with duplex potentiometer Wx the first potentiometer Ra
End electrical connection；Cunning during the second input interface end use of the second detection unit 2 with duplex potentiometer Wx the second potentiometer Rb
Moved end electrically connects；First to the 3rd power end of the second detection unit 2 corresponds to the first to the 3rd power supply with power module 7 respectively
Output end electrically connects.
The signal input output end of the first detection signal communication ends of informix processing unit 3 and the first detection unit 1
Two-way signaling electrically connects；The signal of the second detection signal communication ends and the second detection unit 2 of informix processing unit 3 is defeated
Enter the electrical connection of output end two-way signaling；The power end of informix processing unit 3 and the first power output end of power module 7
Electrical connection.
The signal communication end of touch display screen 4 and the two-way letter in man-machine interaction signal communication end of informix processing unit 3
Number electrical connection；The power end of touch display screen 4 electrically connects with the first power output end of power module 7.
The control signal input of indicator lamp 5 electrically connects with the indicator lamp control end signal of informix processing unit 3；Refer to
Show that the power end of lamp 5 electrically connects with the first power output end of power module 7.
The control signal input of buzzer 6 electrically connects with the buzzer control end signal of informix processing unit 3；Honeybee
The power end of ring device 6 electrically connects with the first power output end of power module 7.
The power input of power module 7 electrically connects when using with alternating current 220V civil power；First power supply of power module 7 is defeated
Go out to hold output+5V power supplys；The second source output end output+12V power supplys of power module 7；The 3rd power supply output of power module 7
Hold output -12V power supplys；4th power output end output+18V power supplys of power module 7.
The power input of constant pressure source module 8 electrically connects with the 4th power output end of power module 7；Constant pressure source module 8
The first constant pressure output end output+10V constant voltages；Second constant pressure output end output+5V constant voltages of constant pressure source module 8；
3rd constant pressure output end output+0.1V constant voltages of constant pressure source module 8.
The signal input part of loudspeaker 9 electrically connects with the audible warning output end of the second detection unit 2.
See Fig. 2, the first detection unit 1 is mainly by first detection module 11, the second detection module 12, A/D modular converters 13
Formed with single-chip microcomputer control process module 14.First detection unit 1 be used for detect duplex potentiometer Wx the first potentiometer Ra and
Second potentiometer Rb total resistance, zero resistance and synchronizing characteristics.
The detection module 12 of first detection module 11 and second is respectively provided with voltage measurement control signal input, electric current is surveyed
Measure control signal input, the first to the 3rd range control signal input part, always resistance signal output part, zero resistance/stroke signal are defeated
Go out end, open circuit signaling output end, first to fourth power end and the first to the 3rd constant pressure input；A/D modular converters 13 are set
There are first total resistance signal input part, one zero resistances/stroke signal input, second total resistance signal input part, 20 resistances/stroke
Signal input part, signal communication end, the first to the 3rd power end；Single-chip microcomputer control process module 14 is provided with voltage measurement control letter
Number output end, current measurement control signal output, the first to the 3rd range control signal output part, the input of the first open circuit signaling
End, the second open circuit signaling input, internal communication ends, correspondence with foreign country end and power end.
The voltage measurement control signal input of the detection module 12 of first detection module 11 and second controls with single-chip microcomputer
The voltage measurement control signal output signal electrical connection of processing module 14；The detection module 12 of first detection module 11 and second
Current measurement control signal output signal electricity of the current measurement control signal input with single-chip microcomputer control process module 14
Connection；First to the 3rd range control signal input part of the detection module 12 of first detection module 11 and second respectively correspond to
The first to the 3rd range control signal output end signal electrical connection of single-chip microcomputer control process module 14.
The total resistance signal input part of the first of A/D modular converters 13 and second total resistance signal input part correspond to and the first inspection respectively
Survey total resistance signal output part of module 11 and second and survey total resistance signal output end signal electrical connection of module 12；A/D modular converters
13 one zero resistances/stroke signal input and 20 resistances/stroke signal input correspond to and first detection module 11 respectively
Zero resistance/stroke signal output end and the second detection module 12 zero resistance/stroke signal output end signal electrical connection.
The the first open circuit signaling input and the second open circuit signaling input of single-chip microcomputer control process module 14 correspond to respectively
Electrically connected with the open circuit signaling output end of first detection module 11 and the open circuit signaling output end signal of the second detection module 12；It is single
The internal communication ends of piece machine control process module 14 electrically connect with the signal communication end two-way signaling of A/D modular converters 13；Monolithic
The correspondence with foreign country end of machine control process module 14 is the signal input output end of the first foregoing detection unit 1.
First power end of first detection module 11, the first power end of the second detection module 12, A/D modular converters 13
First power end and the power end of single-chip microcomputer control process module 14 collectively form the first power end of the first detection unit 1,
It connects+5V the power supplys of the first power output end output of power module 7；The second source end of first detection module 11, the second inspection
Survey the second source end of module 12 and the second source end of A/D modular converters 13 and collectively form the second of the first detection unit 1
Power end, it connects+12V the power supplys of the second source output end output of power module 7；3rd power supply of first detection module 11
3rd power end at end, the 3rd power end of the second detection module 12 and A/D modular converters 13 collectively forms the first detection list
3rd power end of member 1, it connects -12V the power supplys of the 3rd power output end output of power module 7；First detection module 11
4th power end of the 4th power end and the second detection module 12 collectively forms the 4th power end of the first detection unit 1, and it connects
+ 18V the power supplys of the 4th power output end output of power module 7；The first of the detection module 12 of first detection module 11 and second
Constant pressure input collectively forms the first constant pressure input of the first detection unit 1, and it connects the first constant pressure output of constant pressure source module 8
Hold+10V the constant voltages of output；Second constant pressure input of the detection module 12 of first detection module 11 and second collectively forms
Second constant pressure input of one detection unit 1, it connects+5V the constant voltages of the second constant pressure output end output of constant pressure source module 8；
3rd constant pressure input of the detection module 12 of first detection module 11 and second collectively forms the 3rd constant pressure of the first detection unit 1
Input, it connects+0.1V the constant voltages of the 3rd constant pressure output end output of constant pressure source module 8.
Still see Fig. 2, the first detection module 11 of the first detection unit 1 is mainly examined by the first measurement range selection module 111, first
Survey mode selection switch 112, the first constant pressure surveys total resistance module 113, the first constant current is surveyed zero resistance/stroke module 114 and first and opened a way
Detection module 115 forms.
First measurement range selection module 111 is provided with the first to the 3rd range control signal input part, first voltage signal output
End, second voltage signal output part, the first power end, second source end, constant pressure input and constant pressure output end；First constant pressure is surveyed
Total resistance module 113 is provided with first voltage signal input part, second voltage signal input part, detection signal output end, the first power supply
End and second source end；It is defeated provided with constant pressure input, current output terminal, voltage signal that zero resistance/stroke module 114 is surveyed in first constant current
Enter end and detection signal output end；First open circuit detection module 115 is provided with constant pressure input, signal input part and signal output
End.
Four bidirectional analogs in the present embodiment of first detection pattern selecting switch 112 preferably using model CD4066 are opened
Close, its enclosed inside has 4 independent analog switches, and each switch has input, output end and control terminal, its with 1 to
No. 14 totally 14 wiring pins；Wherein, No. 1, No. 2 and No. 13 pin is 3 wiring pins of an analog switch, and No. 13 pin are control
Pin；No. 10, No. 11 and No. 12 pin are 3 wiring pins of an analog switch, and No. 12 pin are control pin；No. 3, No. 4 and No. 5 pin are
3 wiring pins of one analog switch, No. 5 pin are control pin；No. 6, No. 8 and No. 9 pin are 3 wiring of an analog switch
Pin, No. 6 pin are control pin.
First constant pressure surveys the first of total first voltage signal input part for hindering module 113 and the first measurement range selection module 111
Voltage signal output end electrically connects；First constant pressure surveys second voltage signal input part, the first measurement range selection mould of total resistance module 113
The second voltage signal output part of block 111 and No. 2 wiring pins of the first detection pattern selecting switch 112 are conllinear；First detection
One fixed terminals of No. 1 wiring pin of mode selection switch 112, No. 11 wiring pins and the first potentiometer Ra are conllinear；The
No. 10 wiring pins of one detection pattern selecting switch 112 electrically connect with the constant pressure output end of the first measurement range selection module 111；First
The electric current of zero resistance/stroke module 114 is surveyed in No. 3 wiring pins, No. 9 wiring pins and the first constant current of detection pattern selecting switch 112
Output end is conllinear；Zero resistance/stroke mould is surveyed in No. 4 wiring pins of the first detection pattern selecting switch 112, No. 8 wiring pins, the first constant current
The voltage signal inputs of block 114 and the first potentiometer Ra slip terminals are conllinear；The letter of first open circuit detection module 115
The detection signal output end that number input surveys total resistance module 113 with the first constant pressure electrically connects.
No. 12 wiring pins and No. 13 wiring pins of first detection pattern selecting switch 112 collectively form the first described detection
The voltage measurement control signal input of module 11；No. 5 wiring pins and No. 6 wiring pins of first detection pattern selecting switch 112
Collectively form the current measurement control signal input of first detection module 11；The first of first measurement range selection module 111 is to
Three range control signal input parts are the first to the 3rd range control signal input part of first detection module 11；First range
First power end of selecting module 111 is the first power end of first detection module 11（+5V）；First constant pressure surveys total resistance module
113 the first power end is the second source end of first detection module 11（+12V）；First constant pressure surveys the of total resistance module 113
Two power ends are the 3rd power end of first detection module 11（-12V）；The second source end of first measurement range selection module 111
As the 4th power end of first detection module 11（+18V）；The constant pressure input of first measurement range selection module 111 is first
First constant pressure input of detection module 11（+ 10V constant pressures）；First constant current survey zero resistance/stroke module 114 constant pressure input be
For the second constant pressure input of first detection module 11（+ 5V constant pressures）；First open circuit detection module 115 constant pressure input be
3rd constant pressure input of first detection module 11（+ 0.1V constant pressures）；First constant pressure surveys the detection signal output of total resistance module 113
End is total resistance signal output part of first detection module 11；The detection signal output of zero resistance/stroke module 114 is surveyed in first constant current
End is zero resistance/stroke signal output end of first detection module 11；First open circuit detection module 115 signal output part be
The open circuit signaling output end of first detection module 11.
First measurement range selection module 111 of first detection module 11 mainly includes 3 relay switches and 3 resistance differences
Accurate reference resistance, or the sampling resistor that 3 resistances are different.1 relay switch and 1 sampling resistor form an amount
Journey selecting unit.Single-chip microcomputer control process module 14 is corresponding so as to select by controlling the break-make of corresponding relay switch
Sampling resistor is connected with the first tested potentiometer Ra, realizes the selection of range.Single-chip microcomputer control process module 14 passes through control
First detection pattern selecting switch 112 is turned on or off to select total resistance, zero resistance and the inspection of stroke to the first potentiometer Ra
Survey.First constant pressure surveys the constant pressure for always hindering module 113 by adding+10 V in the first potentiometer Ra to be measured, and caused electric current flows through
The sampling resistor of first measurement range selection module 111, the voltage on sample resistance is by sending 13 turns of A/D modular converters after amplification
Single-chip microcomputer control process module 14 is sent after changing.
First constant current surveys zero resistance/stroke module 114 and flows through the first potentiometer Ra to be measured by exporting 5mA constant currents,
Caused voltage send single-chip microcomputer control process module 14 again by being changed after amplification through A/D modular converters 13.
First open circuit detection module 115 is for detecting whether there is the duplex potentiometer of potentiometer to be detected and the present embodiment
Total resistance and moving noise detector are connected.The detection signal of first open circuit detection module 115 is directly output to single-chip microcomputer control process
Module 14.
Still see Fig. 2, the second detection module 12 of the first detection unit 1 is mainly examined by the second measurement range selection module 121, second
Survey mode selection switch 122, the second constant pressure surveys total resistance module 123, the second constant current is surveyed zero resistance/stroke module 124 and second and opened a way
Detection module 125 forms.
Corresponding functions of modules is identical with first detection module 11 for the function of each module of second detection module 12；Second
The mutual electric connection mode of each module of detection module 12 and with A/D modular converters 13 and single-chip microcomputer control process module 14
Electric connection mode it is corresponding identical with first detection module 11.Second detection module 12 is electrically connected when using with the second potentiometer Rb
Connect.
The A/D modular converters 13 of first detection unit 1 are used to transmit the detection module 12 of first detection module 11 and second
Signal carry out analog/digital conversion after be transferred to single-chip microcomputer control process module 14.The core devices of A/D modular converters 13 are
The integrated A/D converter chip of AD574 models.
The core devices of the single-chip microcomputer control process module 14 of first detection unit 1 are single-chip microcomputer, in the present embodiment, monolithic
The single-chip microcomputer of machine control process module 14 preferably uses model STC90C54RD single-chip microcomputer.
The data that single-chip microcomputer control process module 14 receives the transmission of A/D modular converters 13 calculate detected duplex potentiometer
Wx the first potentiometer Ra and the second potentiometer Rb total resistance and zero resistance and the first potentiometer Ra and the second potentiometer Rb it is same
Walk characteristic：
Single-chip microcomputer control process module 14 is according to formula:
（Formula 1）
Calculate the first potentiometer Ra and the second potentiometer Rb total resistance.In formula, V sampling voltages are to be surveyed always by the first constant pressure
Resistance module 113 or second constant pressure is surveyed that total resistance module 123 exports and gives single-chip microcomputer control after A/D modular converters 13 are changed
The voltage signal of processing module 14 processed；R sample resistances are the 3 of the first measurement range selection module 111 or the second measurement range selection module 121
The resistance value of 1 in individual sample resistance.
Single-chip microcomputer control process module 14 is according to formula:
（Formula 2）
Calculate the first potentiometer Ra and the second potentiometer Rb zero resistance.In formula, V is to survey zero resistance/stroke by the first constant current
The constant current of module 114 or second surveys amplified, the A/D modular converters 13 that zero resistance/stroke module 124 exports and send single-chip microcomputer again after changing
The voltage signal of control process module 14.
When measuring the first potentiometer Ra and the second potentiometer Rb synchronizing characteristics, single-chip microcomputer control process module 14 is pressed first
According to formula:
Voltage attenuation amount（dB）=（Formula 3）
Calculate the voltage attenuation amount i.e. stroke A on the first potentiometer Ra；Voltage attenuation amount B on second potentiometer Rb is
Stroke B, V is to survey the constant current of zero resistance/stroke module 114 or second by the first constant current to survey zero resistance/stroke module 124 in formula
The amplified of output, A/D modular converters 13 send the voltage signal of single-chip microcomputer control process module 14 again after changing, VCC is+10V
Constant pressure；
Then, single-chip microcomputer control process module 14 calculates the same of the first potentiometer Ra and the second potentiometer Rb according to the following formula
Step is poor:
Synchronization discrepancy（dB）=stroke B- strokes A (formula 4)
Single-chip microcomputer control process module 14 by the first potentiometer Ra calculated and the second potentiometer Rb total resistance, zero resistance and
Synchronization discrepancy（dB）And the detection signal that its first open circuit open circuit detection module 125 of detection module 115 and second received exports
It is sent to informix processing unit 3 in real time in the lump.Single-chip microcomputer control process module 14 is according to the finger of informix processing unit 3
Order implements control to select range to the first measurement range selection module 111 and the second measurement range selection module 121, to the first detection pattern
The detection pattern selecting switch 112 of selecting switch 112 and first implements control to select to survey total resistance or zero resistance/stroke.
The first potentiometer Ra and that the real-time reception of informix processing unit 3 is transmitted by single-chip microcomputer control process module 14
Two potentiometer Rb total resistance, zero resistance and synchronization discrepancy（dB）Information, after processing will be sent to touch display screen 4 is shown in real time
Show.When the first detection unit 1 first open circuit detection module 115 and second open a way detection module 125 detect it is not to be detected
Potentiometer access when, after informix processing unit 3 receives the signal transmitted by single-chip microcomputer control process module 14, control
Always resistance and moving noise detector are in holding state to the duplex potentiometer of the present embodiment processed.
See Fig. 1 and Fig. 3, the second detection unit 2 is used for the first potentiometer Ra and the second current potential for detecting duplex potentiometer Wx
Device Rb moving noise characteristic.
Second detection unit 2 in the first preposition filtering and amplifying circuit 21, first mainly by putting amplifying circuit 22, the first peak value
Amplifying circuit 25, the second peak-detector circuit 26, monolithic are put in detecting circuit 23, the second preposition filtering and amplifying circuit 24, second
Machine process circuit 27 and noise samples and power amplifier 28 form.
It is preposition that amplifying circuit 22, the first peak-detector circuit 23, second are put in first preposition filtering and amplifying circuit 21, first
The peak-detector circuit 26 of amplifying circuit 25 and second is put in filtering and amplifying circuit 23, second and is respectively provided with signal input part, letter
Number output end, the first power end and second source end；It is defeated that single-chip microcomputer process circuit 27 is provided with the first signal input part, secondary signal
Enter end, communication ends and power end；Noise samples and power amplifier 28 are provided with the first signal input part, secondary signal input, letter
Number output end, the first power end and second source end.
The signal input part of first preposition filtering and amplifying circuit 21 is that the first input of the second foregoing detection unit 2 connects
Mouthful end, electrically connected with duplex potentiometer Wx the first potentiometer Ra sliding end during use；The letter of amplifying circuit 22 is put in first
Number input electrically connects with the signal output part of the first preposition filtering and amplifying circuit 21；The signal of first peak-detector circuit 23 is defeated
Enter end to electrically connect with putting the signal output part of amplifying circuit 22 in first；
The signal input part of second preposition filtering and amplifying circuit 24 is that the second input of the second foregoing detection unit 2 connects
Mouthful end, electrically connected with duplex potentiometer Wx the second potentiometer Rb sliding end during use；The letter of amplifying circuit 25 is put in second
Number input electrically connects with the signal output part of the second preposition filtering and amplifying circuit 24；The signal of second peak-detector circuit 26 is defeated
Enter end to electrically connect with putting the signal output part of amplifying circuit 25 in second；
The signal output part of first signal input part of single-chip microcomputer process circuit 27 and the first peak-detector circuit 23 is electrically connected
Connect；The secondary signal input of single-chip microcomputer process circuit 27 electrically connects with the signal output part of the second peak-detector circuit 26；It is single
The communication ends of piece machine process circuit 27 are the signal input output end of the second foregoing detection unit 2；Noise samples and power amplifier
First signal input part of circuit 28 electrically connects with putting the signal output part of amplifying circuit 22 in first；Noise samples and power amplifier electricity
The secondary signal input on road 28 electrically connects with putting the signal output part of amplifying circuit 25 in second；Noise samples and power amplifier
28 signal output part is the audible warning output end of the second foregoing detection unit 2.
The power end of single-chip microcomputer process circuit 27 is the first power end of the second foregoing detection unit 2（Meet+5V）；The
Amplifying circuit 22, the first peak-detector circuit 23, the second preposition amplification filtered electrical are put in one preposition filtering and amplifying circuit 21, first
Amplifying circuit 25, the second peak-detector circuit 26 and the first power end of noise samples and power amplifier 28 are put in road 24, second
Collectively form the second source end of the second foregoing detection unit 2（Meet+12V）；In first preposition filtering and amplifying circuit 21, first
Put and amplifying circuit 25, are put in amplifying circuit 22, the first peak-detector circuit 23, the second preposition filtering and amplifying circuit 24, second
It is single that the second source end of two peak-detector circuits 26 and noise samples and power amplifier 28 collectively forms the second foregoing detection
3rd power end of member 2（Meet -12V）.
The core devices of single-chip microcomputer process circuit 27 are single-chip microcomputer, in the present embodiment, the monolithic of single-chip microcomputer process circuit 27
Machine preferably uses model STC12C5410AD single-chip microcomputer.Single-chip microcomputer process circuit 27 is handled 2 road signals of reception
Corresponding data is uploaded to informix processing unit 3 afterwards, and receives the control of informix processing unit 3.
Still see Fig. 1, the core devices of informix processing unit 3 are single-chip microcomputer, and in the present embodiment, informix processing is single
The single-chip microcomputer of member 3 is preferably complete using model STC12C5A60S2 High Speed Microcontroller, the instruction code of the type single-chip microcomputer
Compatible traditional 8051, but fast 8-12 times of speed, there is 60K user applications space, integrated 1280 byte RAM on piece,
There are EEPROM functions, can conveniently realize that the power down for setting permissible value preserves.There are the type single-chip microcomputer 2 to use UART working methods
Full duplex serial communication interface, for the single-chip microcomputer control process module 14 and the second detection unit 2 with the first detection unit 1
Single-chip microcomputer process circuit 29 real time bidirectional communication.
Referring to Fig. 4 to Fig. 6, touch display screen 4 is used for parameter setting and presentation of information.User is set by touch display screen
Test parameter permissible value is simultaneously stored in the single-chip microcomputer of informix processing unit 3, and informix processing unit 3 is by corresponding information
It is sent to the single-chip microcomputer control process module 14 of the first detection unit 1 and the single-chip microcomputer process circuit 29 of the second detection unit 2；Touch
Touch the data that display screen 4 transmits to informix processing unit 3 simultaneously and real-time display is carried out in the form of character and curve.
Indicator lamp 5 is used for light warning.Indicator lamp 5 is provided with 2, wherein 1 is green light, another is red light.Indicator lamp 5
Whether lighted by the control of informix processing unit 3：When the tested duplex potentiometer Wx's that informix processing unit 3 receives
After measured data is compared with preset value, qualified products green light is lighted；Substandard product is then put and sends out a warning and flash report
It is alert.In the present embodiment, indicator lamp 5 preferably uses LED.
Buzzer 6 is controlled by information integrated treatment unit 3, auditory tone cues during for parameter setting, and during detection pair
Underproof product sends different sound and alarmed.
Loudspeaker 9 are used to show moving noise by sound, in detection process, skillfully, experienced tester pass through loudspeaker
Whether within a preset range 9 sound sent can substantially judge tested duplex potentiometer Wx moving noise.
The duplex potentiometer of the present embodiment always hinders and moving noise detector（Aftermentioned abbreviation detector）, work when it is used
It is summarized as follows as process：
Detector connects 220V civil powers, and touch display screen 4 enters setting interface as shown in Figure 4, each parameter now shown
It is worth and pre-sets parameter value for what is preserved in detector internal memory.User is preset according to tested duplex potentiometer Wx relevant parameter
Put：
The button below screen that user passes through touch display screen 4, using the method for modification current data, carry out parameter and set
Put.Specific method is：" set " button is first touched, a cursor occurs below the data item of digital always hindered above screen, then
Secondary touch " set " button, cursor meeting line down, after moving to most descending, is circulated back to most up again；" moved as touched
Position " button, cursor can move right, and after low order end is moved to, circulation again moves to high order end；By up and down, move left and right cursor,
After allowing cursor to point to the numeral to be changed below, touch and " add 1 " button, you can modification cursor institute exponential quantity.So change
After all parameters, " confirmation " button is finally touched, hears that buzzer 6 sends a sound of " beep ", represents amended and pre-sets ginseng
Numerical value has been stored into internal memory, and instrument enters test mode, the test interface shown on the screen of touch display screen 4 as shown in figure 5,
Now user can then carry out test operation.
When duplex potentiometer Wx electrically connects with detector（In actual use, generally use electrically connects special with detector
Fixture carrys out grafting duplex potentiometer Wx）Afterwards, detector is tested and shows duplex electricity immediately on the screen of touch display screen 4 first
The position device Wx respective total resistance of the first potentiometer Ra and the second potentiometer Rb, such as two total resistances are equal to the total resistance pre-seted
Or in the deviation range that total resistance allows, then buzzer 6 sends a sound prompt tone of " beep ", with show always hinder it is qualified；If have one
Or two total resistance beyond scope is pre-seted, then liquid crystal highlights the total resistance of display, and buzzer not give birth to by sounding, and operating personnel can't hear
Sound, you can it is unqualified to know that the duplex potentiometer always hinders.
Then zero resistance to duplex potentiometer Wx is tested.When rotating duplex potentiometer Wx in the counterclockwise direction to the end,
Instrument is tested zeropoint resistance, and duplex potentiometer Wx the first current potential occurs in " leading zero resistance " data item correspondence position on screen
Device Ra and the second potentiometer Rb two 0 resistance measured datas, such as two zero resistance will then hear buzzing in values
Device sends the qualified prompt tone of " beep ", to show that zero resistance is qualified；Such as duplex potentiometer Wx the first potentiometer Ra and the second potentiometer
Have in Rb one it is unqualified, then without sound equipment.
Followed by duplex potentiometer Wx the first potentiometer Ra and the second potentiometer Rb synchronizing characteristics and moving noise
Test.User only need to rotate clockwise duplex potentiometer Wx to the end.During rotation, on the one hand：Shown touching
There is the synchronization discrepancy currently surveyed and corresponding B connection strokes in " synchronization " and " stroke " data item correspondence position above the screen of screen 4,
It is from right " the synchronizing characteristics curve " turned left and drawn out, the horizontal seat of curve during potentiometer turns clockwise below screen
Mark is that B joins stroke, unit " dB "；Ordinate is synchronization discrepancy（B joins and the difference of A connection strokes）, unit " dB ".Abscissa is upper and lower to be had
Two dotted lines, represent the qualified allowed band of the synchronization discrepancy of A, B two（Allow default value changes with synchronization discrepancy）, such as curve of drafting
Between two dotted lines, it is synchronous qualified to illustrate；Such as exceed the scope of dotted line limit, then it represents that the trip position is synchronously overproof.It is bent
Line intuitively reflects synchronous overproof degree and overproof position.On the other hand：" moving noise " data item pair above screen
Position is answered the current actual measurement maximum of the linkage noises of A, B two occur；User can also hear the process of duplex potentiometer Wx rotations
In " moving noise " that is sent from loudspeaker 9, the size of sound can intuitively reflect the size of duplex potentiometer Wx moving noises.
When duplex potentiometer Wx is rotated clockwise to, the detection process of a duplex potentiometer all terminates, inspection
It is to carry out qualified judgement to all parameters surveyed to survey instrument：Total resistance, zero resistance, moving noise and net synchronization capability when duplex potentiometer
All being consistent with parameter preset permissible value, then buzzer 6 sends " beep ... beep ... beep " three sound prompt tones, meanwhile, the green light of indicator lamp 5
Flicker, it is qualified to show；It is unqualified if any one or more parameters（Unqualified data item is presented on the screen of touch display screen 4
Highlight display）, then the not sounding, while the red light of indicator lamp 5 lights flicker of buzzer 6, accordingly, testing staff is easy for can area
Whether qualified separate product.Result data after the duplex potentiometer test of a certain model terminates is as shown in Figure 6.
Finally, duplex potentiometer is extracted, on-screen data will be removed, and can continue to start the inspection of next duplex potentiometer
Survey.
To sum up, the present embodiment duplex potentiometer always resistance and moving noise detector, can collect duplex potentiometer total resistance, zero
Resistance, synchronous characteristic and moving noise Characteristics Detection in one, so as to efficiently reduce the detection device on enterprise's production line and
Manually, significantly save entreprise cost, improve enterprises production efficiency；By setting touch display screen, it is convenient to before being detected
Parameter presets, and can intuitively show associated technical parameters and curve in detection process, testing staff can be from the number of display
Judge whether index of correlation is qualified according to graph direct, it is efficient and convenient；By setting buzzer and indicator lamp, can clearly prompt to examine
Whether the duplex potentiometer index that survey personnel are detected is qualified, improves work efficiency；By setting loudspeaker, in detection duplex potentiometer
When, the sound that skilled testing staff can send with the loudspeaker heard can determine whether the moving noise index of duplex potentiometer closes
Lattice, so as to greatly improve operating efficiency；It is combined by analog circuit with single-chip microcomputer, the detection than full analog circuit is set
Standby, accuracy of detection is significantly improved.
Above example is the explanation to the embodiment of the present invention, rather than limitation of the present invention, relevant technology
The technical staff in field without departing from the spirit and scope of the present invention, can also make various conversion and change and obtain
To corresponding equivalent technical scheme, therefore all equivalent technical schemes should be included into the patent protection model of the present invention
Enclose.
Claims (1)
1. a kind of duplex potentiometer always hinders and moving noise detector, it is characterised in that：Including the first detection unit（1）, second inspection
Survey unit（2）, informix processing unit（3）, touch display screen（4）, indicator lamp（5）, buzzer（6）, power module（7）、
Constant pressure source module（8）And loudspeaker（9）；
The first described detection unit（1）Provided with first to fourth input interface end, signal input output end, first to fourth electricity
Source and the first to the 3rd constant pressure input；Second detection unit（2）Provided with the first input interface end, the second input interface end,
Signal input output end, audible warning output end and the first to the 3rd power end；Informix processing unit（3）Provided with first
Detection signal communication ends, the second detection signal communication ends, man-machine interaction signal communication end, indicator lamp control terminal, buzzer control
End and power end；Touch display screen（4）Provided with signal communication end and power end；Indicator lamp（5）Provided with control signal input and
Power end；Buzzer（6）Provided with control signal input and power end；Power module（7）Provided with power input and first to
4th power output end；Constant pressure source module（8）Provided with power input and the first to the 3rd constant pressure output end；Loudspeaker（9）It is provided with
Signal input part；
Informix processing unit（3）First detection signal communication ends and the first detection unit（1）Signal input output end
Two-way signaling electrically connects；Informix processing unit（3）The second detection signal communication ends and the second detection unit（2）Letter
The electrical connection of number input/output terminal two-way signaling；Touch display screen（4）Signal communication end and informix processing unit（3）People
Machine interactive signal communication ends two-way signaling electrically connects；Indicator lamp（5）Control signal input and informix processing unit（3）
Indicator lamp control end signal electrical connection；Buzzer（6）Control signal input and informix processing unit（3）Buzzing
Device control end signal electrical connection；Loudspeaker（9）Signal input part and the second detection unit（2）Audible warning output end be electrically connected
Connect；
First detection unit（1）First to fourth power end respectively correspond to and power module（7）First to fourth power supply it is defeated
Go out end electrical connection；First detection unit（1）The first to the 3rd constant pressure input respectively correspond to constant pressure source module（8）First
Electrically connected to the 3rd constant pressure output end；Second detection unit（2）The first to the 3rd power end respectively correspond to and power module（7）
The first to the 3rd power output end electrical connection；Informix processing unit（3）Power end, touch display screen（4）Power supply
End, indicator lamp（5）Power end and buzzer（6）Power end and power module（7）The first power output end be electrically connected
Connect；Constant pressure source module（8）Power input and power module（7）The 4th power output end electrical connection；
In use, power module（7）Power input electrically connected with alternating current 220V civil power；First detection unit（1）First
Correspond to a fixed terminals with duplex potentiometer Wx to be detected the first potentiometer Ra respectively with the second input interface end
Electrically connected with sliding end；First detection unit（1）The third and fourth input interface end correspond to respectively with duplex potentiometer Wx
A second potentiometer Rb fixed terminals and sliding end electrical connection；Second detection unit（2）The first input interface end with
First potentiometer Ra sliding end electrical connection；Second detection unit（2）The second input interface end and the second potentiometer Rb cunning
Moved end electrically connects；First potentiometer Ra another fixed terminals and the second potentiometer Rb another fixed terminals connect
Ground；
The first described detection unit（1）Including first detection module（11）, the second detection module（12）, A/D modular converters
（13）With single-chip microcomputer control process module（14）；
Described first detection module（11）With the second detection module（12）Respectively be provided with voltage measurement control signal input,
Current measurement control signal input, the first to the 3rd range control signal input part, always hinder signal output part, zero resistance/stroke
Signal output part, open circuit signaling output end, first to fourth power end and the first to the 3rd constant pressure input；A/D moduluss of conversion
Block（13）Provided with first total resistance signal input part, one zero resistances/stroke signal input, second total resistance signal input part, second
Zero resistance/stroke signal input, signal communication end, the first to the 3rd power end；Single-chip microcomputer control process module（14）Provided with electricity
Press measuring control signal output end, current measurement control signal output, the first to the 3rd range control signal output part, first
Open circuit signaling input, the second open circuit signaling input, internal communication ends, correspondence with foreign country end and power end；
First detection module（11）Voltage measurement control signal input and the second detection module（12）Voltage measurement control letter
Number input with single-chip microcomputer control process module（14）Voltage measurement control signal output signal electrical connection；First detection
Module（11）Current measurement control signal input and the second detection module（12）Current measurement control signal input with
Single-chip microcomputer control process module（14）Current measurement control signal output signal electrical connection；First detection module（11）First
To the 3rd range control signal input part and the second detection module（12）The first to the 3rd range control signal input part divide equally
Dui Ying not be with single-chip microcomputer control process module（14）The first to the 3rd range control signal output end signal electrical connection；
A/D modular converters（13）First total resistance signal input part and second total resistance signal input part correspond to respectively and the first detection
Module（11）Total resistance signal output part and the second detection module（12）Total resistance signal output end signal electrical connection；A/D is changed
Module（13）One zero resistances/stroke signal input and 20 resistances/stroke signal input respectively correspond to first detection
Module（11）Zero resistance/stroke signal output end and the second detection module（12）Zero resistance/stroke signal output end signal be electrically connected
Connect；
Single-chip microcomputer control process module（14）The first open circuit signaling input and the second open circuit signaling input respectively correspond to
First detection module（11）Open circuit signaling output end and the second detection module（12）Open circuit signaling output end signal electrical connection；
Single-chip microcomputer control process module（14）Internal communication ends and A/D modular converters（13）Signal communication end two-way signaling be electrically connected
Connect；Single-chip microcomputer control process module（14）Correspondence with foreign country end be the first described detection unit（1）Signal input and output
End；
First detection module（11）The first power end, the second detection module（12）The first power end, A/D modular converters（13）
The first power end and single-chip microcomputer control process module（14）Power end collectively form the first detection unit（1）First electricity
Source；First detection module（11）Second source end, the second detection module（12）Second source end and A/D modular converters
（13）Second source end collectively form the first detection unit（1）Second source end；First detection module（11）The 3rd electricity
Source, the second detection module（12）The 3rd power end and A/D modular converters（13）The 3rd power end collectively form first
Detection unit（1）The 3rd power end；First detection module（11）The 4th power end and the second detection module（12）The 4th
Power end collectively forms the first detection unit（1）The 4th power end；First detection module（11）With the second detection module（12）
The first to the 3rd constant pressure input collectively form the first detection unit（1）The first to the 3rd constant pressure input；
The second described detection unit（2）Including the first preposition filtering and amplifying circuit（21）, put amplifying circuit in first（22）,
One peak-detector circuit（23）, the second preposition filtering and amplifying circuit（24）, put amplifying circuit in second（25）, the second peak detection
Circuit（26）, single-chip microcomputer process circuit（27）With noise samples and power amplifier（28）；
The first described preposition filtering and amplifying circuit（21）, put amplifying circuit in first（22）, the first peak-detector circuit（23）、
Second preposition filtering and amplifying circuit（24）, put amplifying circuit in second（25）With the second peak-detector circuit（26）Respectively it is provided with
Signal input part, signal output part, the first power end and second source end；Single-chip microcomputer process circuit（27）It is defeated provided with the first signal
Enter end, secondary signal input, communication ends and power end；Noise samples and power amplifier（28）Provided with the first signal input part,
Secondary signal input, signal output part, the first power end and second source end；
First preposition filtering and amplifying circuit（21）Signal input part be the second described detection unit（2）First input connect
Mouth end；Amplifying circuit is put in first（22）Signal input part and the first preposition filtering and amplifying circuit（21）Signal output part electricity
Connection；First peak-detector circuit（23）Signal input part and first in put amplifying circuit（22）Signal output part be electrically connected
Connect；
Second preposition filtering and amplifying circuit（24）Signal input part be the second described detection unit（2）Second input connect
Mouth end；Amplifying circuit is put in second（25）Signal input part and the second preposition filtering and amplifying circuit（24）Signal output part electricity
Connection；Second peak-detector circuit（26）Signal input part and second in put amplifying circuit（25）Signal output part be electrically connected
Connect；
Single-chip microcomputer process circuit（27）The first signal input part and the first peak-detector circuit（23）Signal output part be electrically connected
Connect；Single-chip microcomputer process circuit（27）Secondary signal input and the second peak-detector circuit（26）Signal output part be electrically connected
Connect；Single-chip microcomputer process circuit（27）Communication ends be the second described detection unit（2）Signal input output end；Noise takes
Sample and power amplifier（28）The first signal input part and first in put amplifying circuit（22）Signal output part electrical connection；Noise
Sampling and power amplifier（28）Secondary signal input and second in put amplifying circuit（25）Signal output part electrical connection；Make an uproar
Sound samples and power amplifier（28）Signal output part be the second described detection unit（2）Audible warning output end；
Single-chip microcomputer process circuit（27）Power end be the second described detection unit（2）The first power end；First is preposition
Filtering and amplifying circuit（21）, put amplifying circuit in first（22）, the first peak-detector circuit（23）, the second preposition amplification filtered electrical
Road（24）, put amplifying circuit in second（25）, the second peak-detector circuit（26）And noise samples and power amplifier（28）'s
First power end collectively forms the second described detection unit（2）Second source end；First preposition filtering and amplifying circuit（21）、
Amplifying circuit is put in first（22）, the first peak-detector circuit（23）, the second preposition filtering and amplifying circuit（24）, put in second
Big circuit（25）, the second peak-detector circuit（26）And noise samples and power amplifier（28）Second source end collectively form
Second detection unit（2）The 3rd power end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510346483.5A CN104898000B (en) | 2013-08-08 | 2013-08-08 | Duplex potentiometer always hinders and moving noise detector |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310344080.8A CN103424656B (en) | 2013-08-08 | 2013-08-08 | Duplex potentiometer electrical quantity comprehensive detector |
| CN201510346483.5A CN104898000B (en) | 2013-08-08 | 2013-08-08 | Duplex potentiometer always hinders and moving noise detector |
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| CN104898000B true CN104898000B (en) | 2017-11-21 |
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| CN201310344080.8A Active CN103424656B (en) | 2013-08-08 | 2013-08-08 | Duplex potentiometer electrical quantity comprehensive detector |
| CN201510346773.XA Active CN104898001B (en) | 2013-08-08 | 2013-08-08 | Duplex potentiometer always hinders, zero hinders and moving noise detector |
| CN201510346483.5A Active CN104898000B (en) | 2013-08-08 | 2013-08-08 | Duplex potentiometer always hinders and moving noise detector |
| CN201510347082.1A Active CN104977493B (en) | 2013-08-08 | 2013-08-08 | Duplex potentiometer always hinders, zero hinders and synchronizing characteristics detector |
| CN201510345317.3A Active CN104865482B (en) | 2013-08-08 | 2013-08-08 | High-precision duplex potentiometer electrical parameter comprehensive detector |
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| CN201510347082.1A Active CN104977493B (en) | 2013-08-08 | 2013-08-08 | Duplex potentiometer always hinders, zero hinders and synchronizing characteristics detector |
| CN201510345317.3A Active CN104865482B (en) | 2013-08-08 | 2013-08-08 | High-precision duplex potentiometer electrical parameter comprehensive detector |
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| CN104237644B (en) * | 2014-09-28 | 2017-03-08 | 潘柯文 | A kind of single duplex potentiometer multifunctional testing circuit |
| CN105717393B (en) * | 2016-02-16 | 2019-10-18 | 常州同惠电子股份有限公司 | A kind of parameter test system and test method for electronic component |
| CN107219401A (en) * | 2017-07-26 | 2017-09-29 | 湖北工程学院 | Resistance detects circuit and resistance detection device |
| CN108459221A (en) * | 2018-03-20 | 2018-08-28 | 广西钦州福晟电子有限公司 | A kind of potentiometer device for detecting performance |
| CN108710046A (en) * | 2018-07-09 | 2018-10-26 | 延锋伟世通电子科技（上海）有限公司 | A kind of onboard instruments durable test device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104898000A (en) | 2015-09-09 |
| CN103424656B (en) | 2015-07-29 |
| CN104865482B (en) | 2017-07-11 |
| CN104977493B (en) | 2017-09-29 |
| CN104977493A (en) | 2015-10-14 |
| CN104865482A (en) | 2015-08-26 |
| CN104898001A (en) | 2015-09-09 |
| CN104898001B (en) | 2017-09-29 |
| CN103424656A (en) | 2013-12-04 |
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