CN108519518A - 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
- Publication number
- CN108519518A CN108519518A CN201810549500.9A CN201810549500A CN108519518A CN 108519518 A CN108519518 A CN 108519518A CN 201810549500 A CN201810549500 A CN 201810549500A CN 108519518 A CN108519518 A CN 108519518A
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- China
- Prior art keywords
- circuit
- board
- resistance
- daughter board
- daughter
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 36
- 238000000605 extraction Methods 0.000 title abstract description 5
- 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 13
- 239000000284 extract Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 6
- 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
- 239000000203 mixture Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention 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 sub-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 invention adopts a multi-daughter board structure, and the scale of the detection system can be arbitrarily constructed according to the number of 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 present invention relates to electronic circuit technology field, especially a kind of high resistant potentiometer carbon film plate array board whole plate resistance value carries
Sense circuit.
Background technology
Since potentiometer has the precision of potentiometer certain requirement using enterprise, and potentiometer manufacturing enterprise is most at present
Using artificial detection, fault rate is high, so that causing serious trade dispute.
Invention content
The technical problem to be solved by the present invention is to：It is proposed a kind of high resistant potentiometer carbon film plate array board whole plate resistance value extraction electricity
Road is suitable for high value (100K-1M) potentiometer carbon film plate accuracy detection, can be carried out to the resistance value of all carbon film plates on array board
Rapid extraction.
The technical solution adopted in the present invention is：A kind of high resistant potentiometer carbon film plate array board whole plate resistance value extraction circuit,
Including a motherboard circuit and at least one daughter board circuit；The daughter board circuit has address number；Multiple daughter boards are simultaneously
It is contacted with the carbon film plate on array board to be measured by probe card, every piece of daughter board circuit reads carbon film plate parameter in order, and will ginseng
Number preserves；The motherboard circuit is connect by communication bus with daughter board circuit, and motherboard circuit is compiled according to the address of daughter board circuit
It number is communicated one by one with daughter board circuit；And the data of all carbon film plates on array board are acquired and preserved；The motherboard circuit
Output end connects computer.
Further, the quantity of daughter board circuit of the present invention 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 film plates.
It further says, daughter board circuit of the present invention includes reference power supply, CPU, the first electronic switch, the second electricity
Sub switch, third electronic switch, measured resistance, reference resistance, voltage follow buffer module, analog-to-digital conversion module and address are compiled
Code switch；The reference power supply connects measured resistance and reference resistance by the first electronic switch, the second electronic switch；It is described
Measured resistance be arranged in series with reference resistance；The third electronic switch connection measured resistance and voltage follow buffer mould
Block；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 voltage by third electronic switch of the present invention
Follow buffer module；And it is preserved after being handled by analog-to-digital conversion module；The lower terminal potential of measured resistance is sent to voltage again
Follow buffer module；And it is preserved after being handled by analog-to-digital conversion module.
The beneficial effects of the invention are as follows：
(1) multiple sub-panels structure is used, the scale of detecting system can be arbitrarily built according to array board carbon film plate quantity；
(2) detection of each daughter board is carried out at the same time, and speed is fast, efficient；
(3) it is reference, high certainty of measurement with high-accuracy resistance；
(4) circuit system is reliable and stable.
Description of the drawings
Fig. 1 is the circuit overall structure diagram of the present invention；
Fig. 2 is daughter board electrical block diagram of the present invention；
Fig. 3 is motherboard circuit structural schematic diagram of the present invention.
Specific implementation mode
Presently in connection with attached drawing and preferred embodiment, the present invention is described in further detail.These attached drawings are simplified
Schematic diagram, the basic structure of the invention will be illustrated schematically only, therefore it only shows the composition relevant to the invention.
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 blocks
Daughter board is constituted, and daughter board quantity is determined by the quantity of carbon film plate on array board, and one piece of daughter board at most measures 16 carbon film plates, every piece of son
Plate has an address number, daughter board (1-N) and meanwhile 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 preserved, 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 preserved, and wait for computer instruction, and data, which are transmitted to computer, carries out analyzing processing.
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 is by electronic switch A by 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 by electronic switch C under CPU controls
The high input impedances amplifier such as OPA277 is built), 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 microcontroller.Then electronic switch C under CPU controls 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 microcontroller.With this
Analogize, last microcontroller all preserves the upper terminal potential of 16 carbon film plates and lower terminal potential, and host command is waited for upload data.
The target of daughter board is to acquire two terminal potentials of corresponding 16 carbon film plates, that is, acquire tested voltage both ends
Voltage and reference resistance both end voltage determine tested electricity convenient for computer according to voltage divider principle (the ratio between voltage is equal to the ratio between resistance)
The resistance value of resistance.
Motherboard circuit structure is as shown in Figure 3：
CPU is received and is preserved according to the carry out sequence communication of daughter board address, by the measured resistance information that daughter board stores, and receives knot
Computer command is waited for 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, to
Improve the production efficiency of manufacturer.
The specific implementation mode of the only present invention described in description above, various illustrations are not to the reality of the present invention
Matter Composition of contents limits, and person of an ordinary skill in the technical field can be to described in the past specific after having read specification
Embodiment is made an amendment or is deformed, without departing from the spirit and scope of the invention.
Claims (4)
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 simultaneously by 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 preserved；The mainboard
Circuit is connect by communication bus with daughter board circuit, and motherboard circuit leads to according to the address number of daughter board circuit with daughter board circuit one by one
Letter；And the data of all carbon film plates on array board are acquired and preserved；The output end of the motherboard circuit connects computer.
2. high resistant potentiometer carbon film plate array board whole plate resistance value as described in claim 1 extracts circuit, it is characterised in that：It is described
The quantity of daughter board circuit 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 films
Piece.
3. high resistant potentiometer carbon film plate array board whole plate resistance value as described in claim 1 extracts circuit, it is characterised in that：It is described
Daughter board circuit include reference power supply, CPU, the first electronic switch, the second electronic switch, third electronic switch, measured resistance, base
Quasi- resistance, voltage follow buffer module, analog-to-digital conversion module and address coding switch；The reference power supply passes through the first electricity
Sub switch, the second electronic switch connection measured resistance and reference resistance；The measured resistance is arranged in series with reference resistance；Institute
The third electronic switch connection measured resistance and voltage follow buffer module stated；The output end of the voltage follow buffer module connects
Connect analog-to-digital conversion module；The analog-to-digital conversion module connects CPU.
4. high resistant potentiometer carbon film plate array board whole plate resistance value as claimed in claim 3 extracts circuit, it is characterised in that：It is described
Third electronic switch the upper terminal potential of measured resistance is first sent to voltage follow buffer module；And by analog-to-digital conversion module into
It is preserved after row processing；The lower terminal potential of measured resistance is sent to voltage follow buffer module again；And by analog-to-digital conversion module into
It is preserved after row processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810549500.9A CN108519518A (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 |
|---|---|---|---|
| CN201810549500.9A CN108519518A (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 |
|---|---|
| CN108519518A true CN108519518A (en) | 2018-09-11 |
Family
ID=63427011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810549500.9A Pending CN108519518A (en) | 2018-05-31 | 2018-05-31 | High-resistance potentiometer carbon diaphragm array plate whole plate resistance value extraction circuit |
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| Country | Link |
|---|---|
| CN (1) | CN108519518A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134988A (en) * | 2013-01-31 | 2013-06-05 | 中国科学院上海技术物理研究所 | Multichannel value of resistance automation measuring system |
| CN206573515U (en) * | 2016-12-30 | 2017-10-20 | 北京航天时代光电科技有限公司 | A kind of cable automatic identification equipment changed based on A/D |
| CN208367091U (en) * | 2018-05-31 | 2019-01-11 | 常州机电职业技术学院 | High-resistance potentiometer carbon diaphragm array plate whole plate resistance value extraction circuit |
-
2018
- 2018-05-31 CN CN201810549500.9A patent/CN108519518A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103134988A (en) * | 2013-01-31 | 2013-06-05 | 中国科学院上海技术物理研究所 | Multichannel value of resistance automation measuring system |
| CN206573515U (en) * | 2016-12-30 | 2017-10-20 | 北京航天时代光电科技有限公司 | A kind of cable automatic identification equipment changed based on A/D |
| CN208367091U (en) * | 2018-05-31 | 2019-01-11 | 常州机电职业技术学院 | High-resistance potentiometer carbon diaphragm array plate whole plate resistance value extraction circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Application publication date: 20180911 |
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