CN209356582U - A kind of resistance capacitance accurate measurement circuit - Google Patents
A kind of resistance capacitance accurate measurement circuit Download PDFInfo
- Publication number
- CN209356582U CN209356582U CN201920034885.5U CN201920034885U CN209356582U CN 209356582 U CN209356582 U CN 209356582U CN 201920034885 U CN201920034885 U CN 201920034885U CN 209356582 U CN209356582 U CN 209356582U
- Authority
- CN
- China
- Prior art keywords
- circuit
- resistance
- capacitance
- measurement
- singlechip chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of resistance capacitance accurate measurement circuit, including singlechip chip, control circuit, resistance measuring module, capacitance measurement module and conversion circuit；The resistance measuring module is made of accurate sampling resistor, by the way that testing resistance and the accurate sampling resistor partial pressure are measured, the voltage value measured feedback is shown that testing resistance resistance value carries out analysis comparison to singlechip chip processing, exports measurement result；The capacitance measurement module includes sequentially connected proportion divider circuit, low-pass active filter, waveform amplifying circuit, rectification circuit, low-pass filter, the proportion divider circuit receives the sine wave that the singlechip chip is sent through testing capacitance, it is handled again through the low-pass active filter, waveform amplifying circuit, rectification circuit, low-pass filter output voltage of direct-flow voltage regulation to the singlechip chip, exports measurement result.The utility model can carry out accurate measurement to resistance capacitance simultaneously, and measurement accuracy is high.
Description
Technical field
The utility model relates to a kind of measuring circuits, and in particular to a kind of resistance capacitance accurate measurement circuit.
Background technique
Nowadays the product similar with resistance capacitance measuring circuit is mostly multimeter, lacks the instrument of special measurement resistance capacitance
Device.Low price class multimeter is cheap, but performance is insufficient, and precision is not high.Though high price class multimeter excellent performance has range certainly
Turn such as changes at the intelligent mark, but price is prohibitively expensive.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of resistance capacitance accurate measurement circuit,
Its measurement accuracy is high, can carry out accurate measurement to resistance capacitance simultaneously.
The technical solution of the utility model is as follows:
A kind of resistance capacitance accurate measurement circuit, including singlechip chip, control circuit, resistance measuring module, capacitor are surveyed
Module and conversion circuit are measured, the output end of the singlechip chip connects the control circuit, and the control circuit passes through described
Conversion circuit connects the input terminal of the singlechip chip, the resistance measuring module, capacitance measurement module respectively with the control
Circuit connection processed；
The resistance measuring module is made of accurate sampling resistor, by dividing testing resistance and the accurate sampling resistor
Pressure measures, and the voltage value measured feedback is shown that testing resistance resistance value carries out analysis ratio to singlechip chip processing
Compared with output measurement result；
The capacitance measurement module includes sequentially connected proportion divider circuit, low-pass active filter, waveform amplification electricity
Road, rectification circuit, low-pass filter, the proportion divider circuit receive the sine that the singlechip chip is sent through testing capacitance
Wave, then arrived through the low-pass active filter, waveform amplifying circuit, rectification circuit, low-pass filter output voltage of direct-flow voltage regulation
The singlechip chip is handled, and measurement result is exported.
In the above-mentioned technical solutions, the model AT89C52 of the singlechip chip.
In the above-mentioned technical solutions, the frequency signal of the sine wave is divided into three kinds, is 8Hz, 80Hz, 800Hz respectively.
In the above-mentioned technical solutions, which further includes display circuit, and the display circuit connects
The output end for connecing the singlechip chip, for showing measurement result.
In the above-mentioned technical solutions, the display circuit is a light-emitting diode display.
In the above-mentioned technical solutions, the singlechip chip is equipped with several data input pins, for accessing the conversion
The output end of circuit.
Compared with the existing technology, the utility model has the beneficial effects that: the utility model by resistance measuring module and
Capacitance measurement module measures resistance and capacitor, and singlechip chip carries out calculation processing, output measurement to capacitance resistance data automatically
Result data shows that measurement result is accurate by display circuit, and can be observed by light-emitting diode display, measurement letter
Singly, conveniently.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of circuit diagram of resistance capacitance accurate measurement circuit described in the utility model embodiment.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
The present invention will be further described in detail for example.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
In order to illustrate technical solution described in the utility model, the following is a description of specific embodiments.
Embodiment
Refering to Figure 1, the present embodiment provides a kind of resistance capacitance accurate measurement circuit, including singlechip chip 1, control
The output end of circuit 2, resistance measuring module 3, capacitance measurement module 4 and conversion circuit 5 processed, the singlechip chip 1 connects institute
Control circuit 2 is stated, the control circuit 2 connects the input terminal of the singlechip chip 1, the electricity by the conversion circuit 5
Resistance measurement module 3, capacitance measurement module 4 are connect with the control circuit 2 respectively.
The singlechip chip 1 is equipped with several data input pins, for accessing the output end of the conversion circuit 5.
Further, the resistance measuring module 3 is made of accurate sampling resistor, by by testing resistance and the precision
Sampling resistor partial pressure measures, and the voltage value measured feedback is obtained testing resistance resistance value to the singlechip chip 1 processing
Analysis comparison is carried out, measurement result is exported.
The capacitance measurement module 4 includes sequentially connected proportion divider circuit, low-pass active filter, waveform amplification electricity
Road, rectification circuit, low-pass filter, the proportion divider circuit receive the singlechip chip 1 through testing capacitance and send just
String wave, then voltage of direct-flow voltage regulation is exported through the low-pass active filter, waveform amplifying circuit, rectification circuit, low-pass filter
It is handled to the singlechip chip 1, exports measurement result.The frequency signal of the sine wave is divided into three kinds, point
It is not 8Hz, 80Hz, 800Hz.
Further, which further includes display circuit 6, and the display circuit 6 connects described
The output end of singlechip chip 1, for showing measurement result.
Further, the display circuit 6 is a light-emitting diode display.
In the present embodiment, the model of the singlechip chip 1 is adopted as AT89C52.
When implementation: measuring resistance and capacitor by resistance measuring module 3 and capacitance measurement module 4, singlechip chip 1 is automatic
Calculation processing is carried out to capacitance resistance data, measurement result is exported, is shown by display circuit 6, measurement result is quasi-
Really, it and can be observed by light-emitting diode display, measurement is simply, conveniently.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (6)
1. a kind of resistance capacitance accurate measurement circuit, it is characterised in that: including singlechip chip, control circuit, resistance measurement mould
The output end of block, capacitance measurement module and conversion circuit, the singlechip chip connects the control circuit, the control circuit
The input terminal of the singlechip chip, the resistance measuring module, capacitance measurement module difference are connected by the conversion circuit
It is connect with the control circuit；
The resistance measuring module is made of accurate sampling resistor, by by testing resistance and the accurate sampling resistor divide into
The voltage value measured feedback is shown that testing resistance resistance value carries out analysis comparison to singlechip chip processing by row measurement, defeated
Measurement result out；
The capacitance measurement module includes sequentially connected proportion divider circuit, low-pass active filter, waveform amplifying circuit, whole
Current circuit, low-pass filter, the proportion divider circuit receive the sine wave that the singlechip chip is sent through testing capacitance, then
Voltage of direct-flow voltage regulation is exported to the list through the low-pass active filter, waveform amplifying circuit, rectification circuit, low-pass filter
Piece machine core piece is handled, and measurement result is exported.
2. a kind of resistance capacitance accurate measurement circuit according to claim 1, it is characterised in that: the singlechip chip
Model AT89C52.
3. a kind of resistance capacitance accurate measurement circuit according to claim 1, it is characterised in that: the frequency of the sine wave
Rate signal is divided into three kinds, is 8Hz, 80Hz, 800Hz respectively.
4. a kind of resistance capacitance accurate measurement circuit according to claim 1, it is characterised in that: the resistance capacitance precision is surveyed
Measuring circuit further includes display circuit, and the display circuit connects the output end of the singlechip chip, for showing measurement result
Data.
5. a kind of resistance capacitance accurate measurement circuit according to claim 4, it is characterised in that: the display circuit is one
Light-emitting diode display.
6. a kind of resistance capacitance accurate measurement circuit according to claim 1, it is characterised in that: the singlechip chip is set
There are several data input pins, for accessing the output end of the conversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920034885.5U CN209356582U (en) | 2019-01-09 | 2019-01-09 | A kind of resistance capacitance accurate measurement circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920034885.5U CN209356582U (en) | 2019-01-09 | 2019-01-09 | A kind of resistance capacitance accurate measurement circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209356582U true CN209356582U (en) | 2019-09-06 |
Family
ID=67802614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920034885.5U Active CN209356582U (en) | 2019-01-09 | 2019-01-09 | A kind of resistance capacitance accurate measurement circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209356582U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345830A (en) * | 2020-10-30 | 2021-02-09 | 厦门市三特兴电子有限公司 | Game paddle rocker circuit board resistance voltage index detection method |
-
2019
- 2019-01-09 CN CN201920034885.5U patent/CN209356582U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345830A (en) * | 2020-10-30 | 2021-02-09 | 厦门市三特兴电子有限公司 | Game paddle rocker circuit board resistance voltage index detection method |
| CN112345830B (en) * | 2020-10-30 | 2024-01-19 | 厦门市三特兴电子有限公司 | Game paddle rocker circuit board resistance voltage index detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106019207B (en) | A kind of electrical energy measurement calibration method | |
| CN107219402B (en) | A kind of circuit for quick measurement of DC resistance for power module port | |
| CN203444012U (en) | High accuracy and rapid speed measurement circuit of wide range current in power system | |
| CN209356582U (en) | A kind of resistance capacitance accurate measurement circuit | |
| CN107831358A (en) | A kind of current measurement device based on MAX4373HEUA | |
| CN209372968U (en) | A kind of high-acruracy survey resistance capacitance system | |
| CN103728462A (en) | Revolution speed sensor circuit capable of measuring low-revolution-speed signals | |
| CN102901854A (en) | Full-automatic, multi-parameter, wide-range and low-cost radio link control (RLC) testing device | |
| CN108572273B (en) | Low current measuring circuit and measuring method thereof | |
| CN205691645U (en) | A kind of signal detection system | |
| CN201107348Y (en) | Two-wire system true effective value transmitter with TRMS signal conversion module as core | |
| CN208969163U (en) | Electric energy metering device and electrical energy measurement processing module, the electrical parameter detection circuit of voltage detecting circuit | |
| CN107219392A (en) | A kind of real-time current signal-data processing system | |
| CN209417136U (en) | A kind of measurement transient voltage circuit | |
| CN103487626A (en) | Measuring circuit | |
| CN208367071U (en) | Multifunctional digital universal meter | |
| CN203642941U (en) | Multipath sensing single-channel constant current measuring device | |
| CN206975109U (en) | A kind of real-time current signal-data processing system | |
| CN206038177U (en) | Three -way formula platinum resistance PT100 temperature measuring system | |
| CN110412485A (en) | A kind of output current detection circuit | |
| CN108037358A (en) | Microcontroller frequency testing system and method | |
| CN105181080B (en) | A kind of digitlization capacitive level probe based on TDC chip technology | |
| CN209313798U (en) | A kind of three line difference channel of two-way | |
| CN204142837U (en) | Portable online resistance conductance detector | |
| CN203414478U (en) | Intelligent measurer used for measuring rotating speed of aeroengine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |