CN208367091U - High-resistance potentiometer carbon diaphragm array plate whole plate resistance value extraction circuit - Google Patents
High-resistance potentiometer carbon diaphragm array plate whole plate resistance value extraction circuit Download PDFInfo
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- CN208367091U CN208367091U CN201820835180.9U CN201820835180U CN208367091U CN 208367091 U CN208367091 U CN 208367091U CN 201820835180 U CN201820835180 U CN 201820835180U CN 208367091 U CN208367091 U CN 208367091U
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 35
- 238000000605 extraction Methods 0.000 title abstract description 3
- 238000004891 communication Methods 0.000 claims abstract description 5
- 239000000523 sample Substances 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 239000000284 extract Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract 3
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
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- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model relates to a whole-board resistance value extraction circuit of a high-resistance potentiometer carbon diaphragm array board, which comprises a main board circuit and at least one daughter board circuit; the daughter board circuit is provided with an address number; the daughter boards are simultaneously contacted with the carbon membrane on the array board to be tested through the probe board, and each daughter board circuit reads the parameters of the carbon membrane in sequence and stores the parameters; the main board circuit is connected with the daughter board circuits through the communication bus, and the main board circuits are in one-to-one communication with the daughter board circuits according to the address numbers of the daughter board circuits; collecting and storing data of all carbon membranes on the array plate; the output end of the mainboard circuit is connected with a computer. The utility model adopts a multi-daughter board structure, and the scale of the detection system can be arbitrarily constructed according to the number of the array board carbon diaphragms; the detection of the daughter boards is carried out simultaneously, the speed is high, and the efficiency is high; the high-precision resistor is used as a reference, and the measurement precision is high; the circuit system is stable and reliable.
Description
Technical field
The utility model relates to electronic circuit technology field, especially a kind of high resistant potentiometer carbon film plate array board whole plate resistance
Value extracts circuit.
Background technique
Since potentiometer has certain requirement to the precision of potentiometer using enterprise, and potentiometer manufacturing enterprise is most at present
Using artificial detection, fault rate is high, so that causing serious trade dispute.
Utility model content
Technical problem to be solved by the utility model is: proposing that a kind of high resistant potentiometer carbon film plate array board whole plate resistance value mentions
Sense circuit is suitable for high value (100K-1M) potentiometer carbon film plate accuracy detection, can be to the resistance value of carbon film plates all on array board
Carry out rapidly extracting.
The technology employed by the present utility model is a kind of high resistant potentiometer carbon film plate array board whole plate resistance value extracts electricity
Road, including a motherboard circuit and at least one daughter board circuit；The daughter board circuit has address number；Multiple daughter boards are same
When contacted by probe card with the carbon film plate on array board to be measured, every piece of daughter board circuit reads carbon film plate parameter in order, and will
Parameter saves；The motherboard circuit is by communication bus and daughter board circuit connection, and motherboard circuit is according to the address of daughter board circuit
Number communicates one by one with daughter board circuit；And the data of carbon film plates all on array board are acquired and saved；The motherboard circuit
Output end connect computer.
Further, the quantity of daughter board circuit described in the utility model is determined by the quantity of carbon film plate on array board to be measured
It is fixed；Every piece of daughter board circuit at most measures 16 carbon film plates.
It further says, daughter board circuit described in the utility model includes reference power supply, CPU, the first electronic switch,
Two electronic switches, third electronic switch, measured resistance, reference resistance, voltage follow buffer module, analog-to-digital conversion module and ground
Location code switch；The reference power supply connects measured resistance and reference resistance by the first electronic switch, the second electronic switch；
The measured resistance is arranged in series with reference resistance；The third electronic switch connection measured resistance and voltage follow buffering
Module；The output end of the voltage follow buffer module connects analog-to-digital conversion module；The analog-to-digital conversion module connects CPU.
It further says, the upper terminal potential of measured resistance is first sent to by third electronic switch described in the utility model
Voltage follow buffer module；And it is saved after being handled by analog-to-digital conversion module；The lower terminal potential of measured resistance is sent to again
Voltage follow buffer module；And it is saved after being handled by analog-to-digital conversion module.
The beneficial effects of the utility model are:
(1) multiple sub-panels structure is used, the scale of detection system can be arbitrarily constructed according to array board carbon film plate quantity；
(2) detection of each daughter board carries out simultaneously, and speed is fast, high-efficient；
It (3) is reference with high-accuracy resistance, measurement accuracy is high；
(4) circuit system is reliable and stable.
Detailed description of the invention
Fig. 1 is the circuit overall structure diagram of the utility model；
Fig. 2 is the utility model daughter board electrical block diagram；
Fig. 3 is the utility model motherboard circuit structural schematic diagram.
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing and preferred embodiment.These attached drawings are letter
The schematic diagram of change, only illustrates the basic structure of the utility model in a schematic way, thus its only show it is related with the utility model
Composition.
A kind of high resistant potentiometer carbon film plate array board whole plate resistance value as shown in Figure 1 extracts circuit, by one piece of mainboard and N block
Daughter board is constituted, and daughter board quantity is determined that one piece of daughter board at most measures 16 carbon film plates, every piece of son by the quantity of carbon film plate on array board
Plate has an address number, and for daughter board (1-N) simultaneously by probe card and the carbon film plate on array board by contacting, when every piece of daughter board people is suitable
Sequence reads carbon film plate parameter, and parameter is saved, and mainboard is then communicated according to daughter board address number with daughter board one by one, will be on array board
The data of all carbon film plates are acquired and are saved, and wait computer instruction, data are transmitted to computer and are analyzed and processed.
Daughter board circuit structure is as shown in Figure 2:
Under the control of cpu, electronic switch A, B connects first passage first, and reference power supply passes through electronic switch A for voltage
It is added on measured resistance RX1 and reference resistance R (precision resistance, this circuit select the resistance of thousand-island forest park, resistance value 300K)
Series circuit, at this point, terminal potential on RX1 is first transmitted to voltage follower (this circuit selection under CPU control by electronic switch C
The building of the high input impedances amplifier such as OPA277), and by analog to digital conversion circuit (this circuit use 12 bit A/D converter ADS7818) into
Row AD conversion, then designated position is saved the data in by single-chip microcontroller.Then electronic switch C is under CPU control by terminal potential under RX1
It is transmitted to voltage follower and is AD converted by analog to digital conversion circuit, then designated position is saved the data in by single-chip microcontroller.With this
Analogize, last single-chip microcontroller all saves the upper terminal potential of 16 carbon film plates and lower terminal potential, and host command is waited to upload data.
The target of daughter board is two terminal potentials for acquiring corresponding 16 carbon film plates, that is, acquires measured voltage both ends
Voltage and reference resistance both end voltage determine tested electricity according to voltage divider principle (the ratio between voltage is equal to the ratio between resistance) convenient for computer
The resistance value of resistance.
Motherboard circuit structure is as shown in Figure 3:
CPU receives and saves the measured resistance information that daughter board stores according to the carry out sequence communication of daughter board address, receives knot
Computer command is waited after beam, and after receiving computer command, the data of preservation are transmitted to computer disposal.
This circuit can be connected with Computerized analysis system, constitute efficient potentiometer carbon film plate precision detection system, thus
Improve the production efficiency of manufacturer.
It is specific embodiment of the present utility model described in above instructions, various illustrations are not practical to this
Novel substantive content is construed as limiting, and person of an ordinary skill in the technical field can be to former institute after having read specification
The specific embodiment stated is made an amendment or is deformed, without departing from the spirit and scope of utility model.
Claims (3)
1. a kind of high resistant potentiometer carbon film plate array board whole plate resistance value extracts circuit, it is characterised in that: including a motherboard circuit
And at least one daughter board circuit；The daughter board circuit has address number；Multiple daughter boards pass through simultaneously probe card with it is to be measured
Carbon film plate contact on array board, every piece of daughter board circuit reads carbon film plate parameter in order, and parameter is saved；The mainboard
Circuit is led to according to the address number of daughter board circuit with daughter board circuit one by one by communication bus and daughter board circuit connection, motherboard circuit
Letter；And the data of carbon film plates all on array board are acquired and saved；The output end of the motherboard circuit connects computer.
2. a kind of high resistant potentiometer carbon film plate array board whole plate resistance value as described in claim 1 extracts circuit, it is characterised in that:
The quantity of the daughter board circuit is determined by the quantity of carbon film plate on array board to be measured；Every piece of daughter board circuit at most measures 16 carbon
Diaphragm.
3. a kind of high resistant potentiometer carbon film plate array board whole plate resistance value as described in claim 1 extracts circuit, it is characterised in that:
The daughter board circuit includes reference power supply, CPU, the first electronic switch, the second electronic switch, third electronic switch, tested electricity
Resistance, reference resistance, voltage follow buffer module, analog-to-digital conversion module and address code switch；The reference power supply passes through
First electronic switch, the second electronic switch connection measured resistance and reference resistance；The measured resistance is connected with reference resistance
Setting；The third electronic switch connection measured resistance and voltage follow buffer module；The voltage follow buffer module
Output end connects analog-to-digital conversion module；The analog-to-digital conversion module connects CPU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820835180.9U CN208367091U (en) | 2018-05-31 | 2018-05-31 | High-resistance potentiometer carbon diaphragm array plate whole plate resistance value extraction circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820835180.9U CN208367091U (en) | 2018-05-31 | 2018-05-31 | High-resistance potentiometer carbon diaphragm array plate whole plate resistance value extraction circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208367091U true CN208367091U (en) | 2019-01-11 |
Family
ID=64930961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820835180.9U Expired - Fee Related CN208367091U (en) | 2018-05-31 | 2018-05-31 | High-resistance potentiometer carbon diaphragm array plate whole plate resistance value extraction circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208367091U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519518A (en) * | 2018-05-31 | 2018-09-11 | 常州机电职业技术学院 | High-resistance potentiometer carbon diaphragm array plate whole plate resistance value extraction circuit |
| CN115017077A (en) * | 2022-04-21 | 2022-09-06 | 上海科梁信息科技股份有限公司 | Protection circuit and backplate are discerned and misplug to sub-board type |
| CN117607546A (en) * | 2024-01-24 | 2024-02-27 | 合肥巨阙电子有限公司 | Multi-channel high-speed high-resistance measurement system and measurement method |
-
2018
- 2018-05-31 CN CN201820835180.9U patent/CN208367091U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108519518A (en) * | 2018-05-31 | 2018-09-11 | 常州机电职业技术学院 | High-resistance potentiometer carbon diaphragm array plate whole plate resistance value extraction circuit |
| CN115017077A (en) * | 2022-04-21 | 2022-09-06 | 上海科梁信息科技股份有限公司 | Protection circuit and backplate are discerned and misplug to sub-board type |
| CN117607546A (en) * | 2024-01-24 | 2024-02-27 | 合肥巨阙电子有限公司 | Multi-channel high-speed high-resistance measurement system and measurement method |
| CN117607546B (en) * | 2024-01-24 | 2024-04-16 | 合肥巨阙电子有限公司 | Multi-channel high-speed high-resistance measurement system and measurement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190111 Termination date: 20210531 |