CN207908599U - A kind of potentiometer device for detecting performance - Google Patents
A kind of potentiometer device for detecting performance Download PDFInfo
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- CN207908599U CN207908599U CN201820379248.7U CN201820379248U CN207908599U CN 207908599 U CN207908599 U CN 207908599U CN 201820379248 U CN201820379248 U CN 201820379248U CN 207908599 U CN207908599 U CN 207908599U
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Abstract
The utility model discloses a kind of potentiometer device for detecting performance,Constant pressure is set and surveys total resistance module,Zero resistance module is surveyed in constant current,Sliding noise detection module is to such as total resistance of the performance of potentiometer to be measured,Zero resistance,Sliding noise is detected,And Pneumatic control module is set,Potentiometer to be measured is placed on external detection plate,Controller module controls the up and down motion of Pneumatic pressure plywood,When Pneumatic pressure plywood moves downward,The sliding end of potentiometer to be measured and one of fixing end are closely connect with two input terminals of detection pattern selecting module,Pneumatic pressure plywood moves upwards,The pin of potentiometer to be measured and the two of detection pattern input terminals disconnect,Complete detection,The setting of above-mentioned module,Can the signal of the sliding end of potentiometer to be measured and one of fixing end be easily input to detection pattern selecting module,Accurately always hindered,The detection of zero resistance and sliding noise,Help to improve efficiency and the accuracy of potentiometer performance detection.
Description
Technical field
The utility model is related to a kind of potentiometer detection devices, and in particular to a kind of potentiometer device for detecting performance.
Background technology
Manufacturing enterprise needs to carry out performance detection to the potentiometer produced in production line, and the prior art is typically
Then artificial detection, before this visual examination use special fixture, special measurement instrument to carry out pin test, also have for difference
Detection parameters, potentiometer is tested using corresponding equipment in different stations, each performance use 1 equipment,
The test equipment that need to be used is more, and the artificial and process of intervention is relatively low, and detection is inconvenient, and artificial frequent intervention can also reduce
Detection efficiency and accuracy.
Utility model content
The utility model provides a kind of potentiometer device for detecting performance, solves of the existing technology in progress potentiometer
The efficiency low problem low with accuracy when can detect.
The utility model solves technical problem by the following technical programs：
A kind of potentiometer device for detecting performance, including potentiometer to be measured, further include detection pattern selecting module, constant pressure survey it is total
Hinder module, constant current survey zero resistance module, sliding noise detection module, analog-to-digital conversion module, controller module, Pneumatic control module with
And Pneumatic pressure plywood；Two input terminals of the detection pattern selecting module respectively with the sliding end of potentiometer to be measured and wherein one
A fixing end connection, the control terminal of the detection pattern selecting module are connect with controller module, and the detection pattern selects mould
The output end all the way of block is connected to constant pressure and surveys total resistance module, and the another way output end of the detection pattern selecting module is connected to perseverance
Stream is surveyed in zero resistance module；The output end that the constant pressure surveys total resistance module is connected to controller module through analog-to-digital conversion module；It is described
The input terminal that zero resistance module is surveyed in constant current is connect with the sliding end of potentiometer to be measured, and the constant current surveys the output end of zero resistance module through mould
Number conversion module is connected to controller module；The control terminal of the Pneumatic control module is connect with controller module, according to control
The control signal of device module controls the Pneumatic pressure plywood and moves up and down；The potentiometer to be measured is mounted on external detection plate,
The sliding end of the potentiometer to be measured and one of fixing end with the up and down motion of Pneumatic pressure plywood be switched on or switched off with
The electrical connection of two input terminals of detection pattern selecting module；The input terminal of the sliding noise detection circuit and potentiometer to be measured
Sliding end connection, the output end of the sliding noise detection circuit connect with controller module；The potentiometer to be measured it is another
One fixing end ground connection.
Further, the sliding noise detection module include pre-amplification circuit, filter circuit, in set amplifying circuit with
And peak-detector circuit；The pre-amplification circuit is input to filter after the sliding end signal of potentiometer to be measured is carried out preposition amplification
Wave circuit is filtered, then is set amplifying circuit in passing through and be amplified, and after peak-detector circuit carries out detection, is input to controller
In module.
Further, the sliding noise detection module further includes noise samples circuit, power amplification circuit and loudspeaker；
The input terminal of the noise samples circuit sets the output end of amplifying circuit, the output end warp of the noise samples circuit in being connected to
Power amplification circuit is connect with loudspeaker.
Further, the constant current surveys zero resistance module and surveys potential circuit group by constant-current source, zero resistance end relay of survey and constant current
At；The control signal surveyed zero resistance end relay and receive controller module, connects the company that constant-current source surveys potential circuit with constant current
It connects；The output end that voltage and current is surveyed in the constant current is connected to analog-to-digital conversion module.
Further, the output end of the constant current survey potential circuit is connect through voltage follower with analog-to-digital conversion module.
Further, it includes that constant pressure source, the total resistance end relay of survey and constant pressure survey electric current electricity that the constant pressure, which surveys total resistance module,
Road；The total resistance end relay of survey receives the signal of controller module, is switched on or switched off constant pressure source and surveys current circuit with constant pressure
Connection, the output end that the constant pressure surveys current circuit are connect with analog-to-digital conversion module.
Further, the Pneumatic control module includes piezoelectricity valve group and position detecting circuit；The piezoelectricity valve group and control
Device module connection processed, receives the control signal of controller module, and the piezoelectricity valve group controls the Pneumatic pressure plywood and moves up and down；
The position signal of valve, is input in controller module in the position detecting circuit detection piezoelectricity valve group.
Compared with prior art, there are following features：
It is arranged that constant pressure surveys total resistance module, zero resistance module is surveyed in constant current, sliding noise detection module is to the performance of potentiometer to be measured
If total resistance, zero resistance, sliding noise are detected, and Pneumatic control module are arranged, potentiometer to be measured is placed on external detection plate,
Controller module control Pneumatic pressure plywood up and down motion, when Pneumatic pressure plywood moves downward, the sliding end of potentiometer to be measured and
One of fixing end is closely connect with two input terminals of detection pattern selecting module, and Pneumatic pressure plywood moves upwards, to be measured
The pin of potentiometer and the two of detection pattern input terminals disconnect, and complete detection, the setting of above-mentioned module will can be waited for easily
The signal of the sliding end and one of fixing end of surveying potentiometer is input to detection pattern selecting module, accurately always hindered,
The detection of zero resistance and sliding noise, helps to improve efficiency and the accuracy of potentiometer performance detection.
Description of the drawings
Fig. 1 is the utility model structural principle block diagram.
Fig. 2 is the structure principle chart of sliding noise detection module.
Fig. 3 is the structure principle chart that zero resistance module is surveyed in constant current.
Fig. 4 is the structure principle chart that constant pressure surveys total resistance module.
Specific implementation mode
The utility model is described in further detail with reference to embodiments, but the utility model is not limited to these implementations
Example.
A kind of potentiometer device for detecting performance, including potentiometer to be measured, further include detection pattern selecting module, constant pressure survey it is total
Hinder module, constant current survey zero resistance module, sliding noise detection module, analog-to-digital conversion module, controller module, Pneumatic control module with
And Pneumatic pressure plywood；Two input terminals of the detection pattern selecting module respectively with the sliding end of potentiometer to be measured and wherein one
A fixing end connection, the control terminal of the detection pattern selecting module are connect with controller module, and the detection pattern selects mould
The output end all the way of block is connected to constant pressure and surveys total resistance module, and the another way output end of the detection pattern selecting module is connected to perseverance
Stream is surveyed in zero resistance module；The output end that the constant pressure surveys total resistance module is connected to controller module through analog-to-digital conversion module；It is described
The input terminal that zero resistance module is surveyed in constant current is connect with the sliding end of potentiometer to be measured, and the constant current surveys the output end of zero resistance module through mould
Number conversion module is connected to controller module；The control terminal of the Pneumatic control module is connect with controller module, according to control
The control signal of device module controls the Pneumatic pressure plywood and moves up and down；The potentiometer to be measured is mounted on external detection plate,
The sliding end of the potentiometer to be measured and one of fixing end with the up and down motion of Pneumatic pressure plywood be switched on or switched off with
The electrical connection of two input terminals of detection pattern selecting module；The input terminal of the sliding noise detection circuit and potentiometer to be measured
Sliding end connection, the output end of the sliding noise detection circuit connect with controller module；The potentiometer to be measured it is another
One fixing end ground connection.
Detection pattern selecting module is two bilateral analog switch, two independent analog switches of enclosed inside, respectively the
One analog switch and the second analog switch, each switch have an input, output end and control terminal, respectively first input end, the
One output end, the first control terminal, the second input terminal, second output terminal, the second control terminal, first input end and potentiometer to be measured
One of fixing end connection, the first output end are surveyed total resistance module with constant pressure and are connect, and the first control terminal is connect with controller module,
Second input terminal is connect with the sliding end of potentiometer to be measured, and second output terminal is surveyed zero resistance module with constant current and connect, the second control terminal
It is connect with controller module.Under the control of controller module, what is switched where executing closes for first control terminal and the second control terminal
It closes or disconnects.
Include total resistance, zero resistance and sliding noise characteristic with the performance-relevant electrical parameter of potentiometer, correspondingly, this practicality is new
Type is provided with constant pressure and surveys total resistance module, zero resistance module of constant current survey and sliding noise detection module.
It includes that constant pressure source, the total resistance end relay of survey and constant pressure survey current circuit that constant pressure, which surveys total resistance module,；The total resistance of survey
It holds relay to receive the signal of controller module, is switched on or switched off the connection that constant pressure source surveys current circuit with constant pressure, the constant pressure
The output end for surveying current circuit is connect with analog-to-digital conversion module.Controller module sends control letter to detection pattern selecting module
Number, the first analog switch is connected, and control signal is sent to total resistance end relay is surveyed, connects constant pressure source and survey current circuit with constant pressure
Connection, constant pressure survey current circuit in be equipped with sample resistance, constant pressure source generate voltage it is in parallel with sample resistance, acquisition 1 electric current
Value, is input in analog-digital converter and carries out analog-to-digital conversion.
Constant current surveys zero resistance module and is surveyed potential circuit by constant-current source, zero resistance end relay of survey and constant current and formed；It is described to survey zero resistance
It holds relay to receive the control signal of controller module, connects the connection that constant-current source surveys potential circuit with constant current；The constant current is surveyed
The output end of voltage and current is connected to analog-to-digital conversion module.Controller module sends control signal to detection pattern selecting module,
The second analog switch is connected, and control signal is sent to zero resistance end relay is surveyed, constant-current source is connected and surveys potential circuit with constant current
Connection surveys potential circuit in constant current and is equipped with sampling resistor, and the electric current that constant-current source generates passes through sampling resistor, will produce voltage value,
The voltage value of gained, which is input in analog-to-digital conversion module, carries out analog-to-digital conversion.Zero resistance module and analog-to-digital conversion module can be surveyed in constant current
Between voltage follower is set, i.e. constant current is surveyed the output end of potential circuit and is connect with analog-to-digital conversion module through voltage follower.Electricity
It presses the input resistance of follower very big, the voltage that potential circuit is obtained can be surveyed taking human as constant current and fully entered to analog-to-digital conversion mould
Block does not lose.
In the potentiometer course of work, sliding end slides on resistive element, and output end is also accompanied by addition to generating useful signal
Electrical noise, the electrical noise are the sliding noise of potentiometer, and size influences the piece electrical of the equipment using the potentiometer
Can, the interference signal generated is possible to initiation maloperation and is therefore made an uproar to the sliding of potentiometer by necessity in production line
Sound is detected.For the spot noise of potentiometer, the utility model setting sliding noise detection module is detected it, slides
Noise detection module include pre-amplification circuit, filter circuit, in set amplifying circuit and peak-detector circuit；Potentiometer to be measured
Sliding end is connected to pre-amplification circuit, and pre-amplification circuit will be defeated after the preposition amplification of sliding end signal progress of potentiometer to be measured
Enter to filter circuit and be filtered, then set amplifying circuit in passing through and be amplified, after peak-detector circuit carries out detection, is input to
In controller module.The sliding noise detection module further includes noise samples circuit, power amplification circuit and loudspeaker；It is described
The input terminal of noise samples circuit sets the output end of amplifying circuit in being connected to, the output end of the noise samples circuit is through power
Amplifying circuit is connect with loudspeaker, and the output signal of amplifying circuit is set in sampling, is carried out power amplification, is reported by loudspeaker,
User by the size of the loudspeaker sound can intuitive judgment sliding noise size.
The signal that Pneumatic control module is sent out according to controller module is switched on or switched off solenoid valve, drives and starts force fit plate
It moves up and down.Potentiometer to be measured is displayed on external probe plate, under the drive of external transport, on probe card, every time
The fixing end and sliding end of only 1 potentiometer are connected to the input terminal of detection pattern selecting module, practical to carry out potentiometer
When can detect, even if potentiometer to be measured is transmitted to the corresponding position of probe card, the electrical connection of pin is also possible to not enough be bonded, because
This setting Pneumatic control module, solenoid valve, Pneumatic pressure plywood, when carrying out performance detection, Pneumatic pressure plywood moves downward, and will wait for
2 input terminals of the sliding end and one of fixing end and detection pattern selecting module of surveying potentiometer are compacted, stringent to realize electricity
Connection, helps to improve the accuracy in detection of potentiometer to be measured.
The Pneumatic control module includes position detecting circuit and piezoelectricity valve group；The piezoelectricity valve group connects with controller module
It connects, receives the control signal of controller module, the piezoelectricity valve group controls the Pneumatic pressure plywood and moves up and down.
The Pneumatic control module includes piezoelectricity valve group and position detecting circuit；The piezoelectricity valve group connects with controller module
It connects, receives the control signal of controller module, the piezoelectricity valve group controls the Pneumatic pressure plywood and moves up and down；The position inspection
Slowdown monitoring circuit detects the position signal of valve in piezoelectricity valve group, is input in controller module.Controller module can be according to position
The position signal of detection circuit output compared with being carried out simply with preset positional value, is sent according to comparison result to piezoelectricity valve group
Corresponding control signal, and then control Pneumatic pressure plywood and move up and down.The operation of the utility model needs in terms of pneumatic execution
The movement of Pneumatic pressure plywood is completed in conjunction with external mechanical gripper, cylinder, venthole etc..
The utility model provides a kind of potentiometer device for detecting performance, predominantly improves the detection efficiency of potentiometer and accurate
Degree provides circuit support and structural support, is not related to the improvement of program.
Claims (7)
1. a kind of potentiometer device for detecting performance, including potentiometer to be measured, it is characterised in that：
Further include detection pattern selecting module, constant pressure surveys total resistance module, zero resistance module, sliding noise detection module, mould are surveyed in constant current
Number conversion module, controller module, Pneumatic control module and Pneumatic pressure plywood；
Two input terminals of the detection pattern selecting module respectively with the sliding end of potentiometer to be measured and one of fixing end
Connection, the control terminal of the detection pattern selecting module are connect with controller module, and the detection pattern selecting module is all the way
Output end is connected to constant pressure and surveys total resistance module, and the another way output end of the detection pattern selecting module is connected to constant current and surveys zero resistance
In module；The output end that the constant pressure surveys total resistance module is connected to controller module through analog-to-digital conversion module；The constant current surveys zero
The input terminal of resistance module is connect with the sliding end of potentiometer to be measured, and the constant current surveys the output end of zero resistance module through analog-to-digital conversion mould
Block is connected to controller module；The control terminal of the Pneumatic control module is connect with controller module, according to controller module
It controls signal and controls the Pneumatic pressure plywood up and down motion；The potentiometer to be measured is mounted on external detection plate, described to be measured
The sliding end of potentiometer and one of fixing end are switched on or switched off and detection pattern with the up and down motion of Pneumatic pressure plywood
The electrical connection of two input terminals of selecting module；The sliding end of the input terminal and potentiometer to be measured of the sliding noise detection circuit
Connection, the output end of the sliding noise detection circuit are connect with controller module；Another of the potentiometer to be measured is fixed
End ground connection.
2. a kind of potentiometer device for detecting performance according to claim 1, it is characterised in that：
The sliding noise detection module include pre-amplification circuit, filter circuit, in set amplifying circuit and peak detection electricity
Road；The pre-amplification circuit will be input to filter circuit after the preposition amplification of sliding end signal progress of potentiometer to be measured and filter
Wave, then set amplifying circuit in passing through and be amplified, after peak-detector circuit carries out detection, it is input in controller module.
3. a kind of potentiometer device for detecting performance according to claim 2, it is characterised in that：
The sliding noise detection module further includes noise samples circuit, power amplification circuit and loudspeaker；The noise samples
The input terminal of circuit sets the output end of amplifying circuit in being connected to, the output end of the noise samples circuit is through power amplification circuit
It is connect with loudspeaker.
4. a kind of potentiometer device for detecting performance according to claim 1, it is characterised in that：
The constant current surveys zero resistance module and is surveyed potential circuit by constant-current source, zero resistance end relay of survey and constant current and formed；It is described to survey zero resistance
It holds relay to receive the control signal of controller module, connects the connection that constant-current source surveys potential circuit with constant current；The constant current is surveyed
The output end of voltage and current is connected to analog-to-digital conversion module.
5. a kind of potentiometer device for detecting performance according to claim 4, it is characterised in that：Potential circuit is surveyed in the constant current
Output end connect with analog-to-digital conversion module through voltage follower.
6. a kind of potentiometer device for detecting performance according to claim 1, it is characterised in that：
It includes that constant pressure source, the total resistance end relay of survey and constant pressure survey current circuit that the constant pressure, which surveys total resistance module,；The total resistance of survey
It holds relay to receive the signal of controller module, is switched on or switched off the connection that constant pressure source surveys current circuit with constant pressure, the constant pressure
The output end for surveying current circuit is connect with analog-to-digital conversion module.
7. a kind of potentiometer device for detecting performance according to claim 1, it is characterised in that：
The Pneumatic control module includes piezoelectricity valve group and position detecting circuit；The piezoelectricity valve group is connect with controller module,
The control signal of controller module is received, the piezoelectricity valve group controls the Pneumatic pressure plywood and moves up and down；The position detection
Circuit detects the position signal of valve in piezoelectricity valve group, is input in controller module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820379248.7U CN207908599U (en) | 2018-03-20 | 2018-03-20 | A kind of potentiometer device for detecting performance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820379248.7U CN207908599U (en) | 2018-03-20 | 2018-03-20 | A kind of potentiometer device for detecting performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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- 2018-03-20 CN CN201820379248.7U patent/CN207908599U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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