CN206114739U - Sampling circuit of voltage that can be multiplexing, electric current, resistance type sensor - Google Patents
Sampling circuit of voltage that can be multiplexing, electric current, resistance type sensor Download PDFInfo
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- CN206114739U CN206114739U CN201621001408.1U CN201621001408U CN206114739U CN 206114739 U CN206114739 U CN 206114739U CN 201621001408 U CN201621001408 U CN 201621001408U CN 206114739 U CN206114739 U CN 206114739U
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- resistance
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- voltage
- type sensor
- electric current
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Abstract
The utility model provides a voltage that can be multiplexing, the electric current, the sampling circuit of resistance type sensor, connect respectively and switch S1's one end in resistance R1's both ends, sensor input and resistance R3's one end is connected respectively to switch S1's the other end, resistance R2's both ends difference ground connection and linked switch S2's one end, switch S2's the other end links sensor input and resistance R3's one end respectively, filter circuit's one end is connected to resistance R3's the other end, resistance R4's both ends difference ground connection and linked switch S3's one end, switch S3's other end difference connecting resistance R3's the other end and filter circuit's one end, ADC sampling circuit's input is connected to filter circuit's the other end. Through the switching of switch, can realize resistance type, current mode and voltage type sensor sampling circuit's switching, be applicable to the various occasions that need to gather current mode, resistance type, voltage type sensor data.
Description
Technical field
This utility model is related to a kind of sample circuit, specifically, relate to a kind of reusable voltage, electric current, resistance
The sample circuit of type sensor.
Background technology
In various engineerings, all can need to use many sensors to carry out data monitoring.The species of sensor has a lot,
The sensors such as such as liquid level, pressure, temperature, but after all, the signal of sensor output substantially only has voltage, resistance, electricity
Flow these three forms.But need to switch different equipment during monitoring, carry out the monitoring of different pieces of information, it is cumbersome.
In order to solve the problem with present on, people are seeking always a kind of preferable technical solution.
The content of the invention
The purpose of this utility model is for the deficiencies in the prior art, so as to provide a kind of reusable voltage, electric current, electricity
The sample circuit of resistance type sensor.
To achieve these goals, the technical scheme that this utility model is adopted is：A kind of reusable voltage, electric current,
The sample circuit of resistance type sensor, including resistance R1, resistance R2, resistance R3, resistance R4, switch S1, switch S2, switch S3 and
Filter circuit, wherein, the two ends of the resistance R1 connect respectively one end of power supply and switch S1, the other end point of the switch S1
Not Lian Jie sensor input and resistance R3 one end, the two ends of the resistance R2 are grounded respectively the one end with connecting valve S2,
The other end of the switch S2 connects respectively one end of the sensor input and resistance R3, the other end connection of the resistance R3
One end of the filter circuit, the two ends of the resistance R4 are grounded respectively and connect one end of the switch S3, the switch S3
The other end connect the other end of resistance R3 and one end of the filter circuit respectively, the other end of the filter circuit is output
End.
Described on base, the switch S1, the switch S2 and switch S3 are wire jumper or toggle switch or analog switch.
Described on base, the resistance of the resistance R3 is equal to the resistance of the resistance R4.
This utility model hinge structure has substantive distinguishing features and progress, specifically, this utility model have with
Lower advantage：
Resistance type sensor sample circuit is constituted by R1, S1, for the data acquisition of resistance type sensor；By S2, R2 group
Into current mode sample circuit, for the data acquisition of amperometric sensor；R3, R4, S3 constitute voltage sensor sample circuit,
For the data acquisition of voltage sensor.Any switching laws that different types of data is gathered are realized, using very convenient.
Description of the drawings
Fig. 1 is reusable voltage in this utility model, electric current, the structural representation of the sample circuit of resistance type sensor
Figure.
Specific embodiment
Below by specific embodiment, the technical solution of the utility model is described in further detail.
As shown in figure 1, a kind of reusable voltage, electric current, the sample circuit of resistance type sensor, including resistance R1, electricity
Resistance R2, resistance R3, resistance R4, switch S1, switch S2, switch S3 and filter circuit, wherein, the two ends of the resistance R1 connect respectively
One end of power supply and switch S1 is connect, the other end of the switch S1 connects respectively one end of sensor input and resistance R3, institute
The two ends for stating resistance R2 are grounded respectively one end with connecting valve S2, and it is defeated that the other end of the switch S2 connects respectively the sensor
Enter one end of end and resistance R3, the other end of the resistance R3 connects one end of the filter circuit, the two ends of the resistance R4
It is grounded and connects one end of the switch S3 respectively, the other end of the switch S3 connects respectively the other end of resistance R3 and described
One end of filter circuit, the other end of the filter circuit is outfan.The resistance of the resistance R3 is equal to the resistance R4's
Resistance.
The course of work is as follows：
Need to use resistance type sensor, S1 closures, switch S2 and switch S3 disconnections, resistance R1 and switch S1 groups will be switched
Into resistance type sensor sample circuit.Come indirect gain resistance value by way of electric resistance partial pressure.
Need to use amperometric sensor, S2 is closed, S1/S3 disconnects, and by S2, R2 current mode sample circuit is constituted, lead to
Overcurrent flows through the voltage of R2 can calculate current value.
Need to use voltage sensor, S3 is closed, S1/S2 disconnects, R3, R4, S3 composition voltage sensor sampling
Circuit, magnitude of voltage can be drawn by the voltage on R4.
The switch S1, the switch S2 and switch S3 are wire jumper or toggle switch or analog switch, can pass through MCU
Control.
Finally it should be noted that:Above example is only to illustrate the technical solution of the utility model rather than it is limited
System；Although being described in detail to this utility model with reference to preferred embodiment, those of ordinary skill in the art should
Understand：Still specific embodiment of the present utility model can be modified or equivalent is carried out to some technical characteristics and be replaced
Change；Without deviating from the spirit of technical solutions of the utility model, it all should cover the technical scheme being claimed in this utility model
In the middle of scope.
Claims (3)
1. a kind of reusable voltage, electric current, the sample circuit of resistance type sensor, it is characterised in that：It includes resistance R1, electricity
Resistance R2, resistance R3, resistance R4, switch S1, switch S2, switch S3 and filter circuit, wherein, the two ends of the resistance R1 connect respectively
One end of power supply and switch S1 is connect, the other end of the switch S1 connects respectively one end of sensor input and resistance R3, institute
The two ends for stating resistance R2 are grounded respectively one end with connecting valve S2, and it is defeated that the other end of the switch S2 connects respectively the sensor
Enter one end of end and resistance R3, the other end of the resistance R3 connects one end of the filter circuit, the two ends of the resistance R4
It is grounded and connects one end of the switch S3 respectively, the other end of the switch S3 connects respectively the other end of resistance R3 and described
One end of filter circuit, the other end of the filter circuit is outfan.
2. reusable voltage according to claim 1, electric current, the sample circuit of resistance type sensor, it is characterised in that：
The switch S1, the switch S2 and switch S3 are wire jumper or toggle switch or analog switch.
3. reusable voltage according to claim 2, electric current, the sample circuit of resistance type sensor, it is characterised in that：
The resistance of the resistance R3 is equal to the resistance of the resistance R4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621001408.1U CN206114739U (en) | 2016-08-31 | 2016-08-31 | Sampling circuit of voltage that can be multiplexing, electric current, resistance type sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621001408.1U CN206114739U (en) | 2016-08-31 | 2016-08-31 | Sampling circuit of voltage that can be multiplexing, electric current, resistance type sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206114739U true CN206114739U (en) | 2017-04-19 |
Family
ID=58516785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621001408.1U Active CN206114739U (en) | 2016-08-31 | 2016-08-31 | Sampling circuit of voltage that can be multiplexing, electric current, resistance type sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206114739U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107992143A (en) * | 2018-01-23 | 2018-05-04 | 徐工集团工程机械有限公司 | Multiplexing collection port circuit, controller, analog input acquisition method and system |
| CN112859666A (en) * | 2020-12-31 | 2021-05-28 | 大运汽车股份有限公司 | General acquisition circuit based on vehicle control unit resistance type and voltage type analog signal |
-
2016
- 2016-08-31 CN CN201621001408.1U patent/CN206114739U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107992143A (en) * | 2018-01-23 | 2018-05-04 | 徐工集团工程机械有限公司 | Multiplexing collection port circuit, controller, analog input acquisition method and system |
| CN107992143B (en) * | 2018-01-23 | 2024-03-01 | 江苏徐工国重实验室科技有限公司 | Multiplexing acquisition port circuit, controller, analog input acquisition method and system |
| CN112859666A (en) * | 2020-12-31 | 2021-05-28 | 大运汽车股份有限公司 | General acquisition circuit based on vehicle control unit resistance type and voltage type analog signal |
| CN112859666B (en) * | 2020-12-31 | 2024-02-02 | 大运汽车股份有限公司 | General acquisition circuit based on resistance type and voltage type analog signals of whole vehicle controller |
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