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Analog voltage output circuit, analog voltage calculation method and sensor

A technology of analog voltage and output circuit, which is applied in the electronic field and can solve problems affecting sensor performance, low accuracy of analog voltage signals, and affecting the detection accuracy of pressure sensors, etc.

Pending Publication Date: 2020-09-04
SHANGHAI YINGHENG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, for an analog voltage type gas pressure sensor, if the accuracy of the output analog voltage signal is not high, it will directly affect the detection accuracy of the pressure sensor, and then affect the performance of the sensor

Method used

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  • Analog voltage output circuit, analog voltage calculation method and sensor
  • Analog voltage output circuit, analog voltage calculation method and sensor
  • Analog voltage output circuit, analog voltage calculation method and sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] figure 1 For a schematic structural diagram of an analog voltage output circuit provided in Embodiment 1 of the present invention, refer to figure 1 , the analog voltage output circuit includes: a reference voltage module 100, a control module 200 and an analog voltage follower module 300;

[0022] The reference voltage module 100 includes a first power input terminal A1, a second power input terminal A2 and a reference voltage output terminal A3. The first power input terminal A1 of the reference voltage module 100 is connected to the first power supply signal ADD. The first power supply signal ADD of the reference voltage module 100 The second power supply input terminal A2 is connected to the second power supply signal GND; the reference voltage module 100 is used to provide the reference voltage to the control module 200;

[0023] The control module 200 includes a first power input terminal B1, a second power input terminal B2, a sampling voltage input terminal B3 ...

Embodiment 2

[0032] figure 2 It is a schematic structural diagram of an analog voltage output circuit provided in Embodiment 2 of the present invention. On the basis of Embodiment 1, refer to figure 2 , the reference voltage module further includes a Zener diode 120 and a first resistor 110;

[0033] The first end of the first resistor 110 is used as the first power supply input terminal A1 of the reference voltage module 100 to input the first power supply signal ADD, and the second end of the first resistor 110 is electrically connected to the cathode of the Zener diode 120;

[0034] The anode of the Zener diode 120 is connected to the second power signal GDN, and the anode of the Zener diode 120 is electrically connected to the second power input terminal A2 of the reference voltage module 100 and the second power input terminal B2 of the control module 200 respectively.

[0035] Among them, the Zener diode uses the reverse breakdown state of the pn junction, and its current can chan...

Embodiment 3

[0044] image 3 It is a schematic structural diagram of an analog voltage output circuit provided in Embodiment 3 of the present invention. On the basis of the above embodiments, refer to image 3 , the comparison unit is an operational amplifier.

[0045] refer to image 3 , the emitter follower unit 320 includes a triode 321, a second resistor 322, a third resistor 323 and a fourth resistor 324, the first input terminal D1 of the comparison unit 310 is electrically connected to the analog voltage output terminal B4 of the control module 200, the comparison unit 310 The second input terminal D2 of the second resistor 322 is electrically connected to the first terminal of the second resistor 322, the second terminal of the second resistor 322 is electrically connected to the analog voltage output terminal E4 of the analog voltage follower module 300, and the output terminal D3 of the comparison unit 310 is electrically connected to the first terminal of the second resistor 32...

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PUM

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Abstract

The embodiment of the invention discloses an analog voltage output circuit, an analog voltage calculation method and a sensor. The circuit comprises a reference voltage module, a control module and ananalog voltage following module, wherein the reference voltage module is used for providing reference voltage for the control module; the sampling voltage input end of the control module is electrically connected with the reference voltage output end of the reference voltage module; the control module is used for generating analog voltage according to reference voltage; the voltage input end of the analog voltage following module is electrically connected with the analog voltage output end of the control module; a first power supply signal is accessed to the first power supply end of the analog voltage following module, a second power supply signal is accessed to the second power supply end of the analog voltage following module, and the analog voltage following module is used for outputting the analog voltage output by the control module and performing feedback adjustment on the output voltage. The analog voltage signal output precision can be improved through the analog voltage output circuit.

Description

technical field [0001] The embodiments of the present invention relate to the field of electronic technology, and in particular to an analog voltage output circuit, an analog voltage calculation method and a sensor. Background technique [0002] Analog voltage signals are widely used in circuit design, and their output accuracy will directly affect the accuracy of sensors or circuits. For example, for an analog voltage type gas pressure sensor, if the accuracy of the analog voltage signal output by it is not high, it will directly affect the detection accuracy of the pressure sensor, and then affect the performance of the sensor. It can be seen that it is extremely important to improve the output accuracy of the analog voltage signal. Contents of the invention [0003] The invention provides an analog voltage output circuit, an analog voltage calculation method and a sensor to improve the output accuracy of the analog voltage signal. [0004] In the first aspect, an embo...

Claims

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Application Information

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IPC IPC(8): G05F1/56
CPCG05F1/561
Inventor 吴文臣刘国山薛矿王海
Owner SHANGHAI YINGHENG ELECTRONICS
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