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Piezoelectric valve drive amplifier circuit

A technique for amplifying circuits and piezoelectric valves, which is applied in the direction of valve operation/release devices, valve details, valve devices, etc., and can solve problems such as inability to output signal control

Active Publication Date: 2013-04-03
CHONGQING CHUANYI AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present application provides a piezoelectric valve driving amplifier circuit to solve the problem in the prior art that the output signal cannot be controlled when the single-chip microcomputer is reset.

Method used

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  • Piezoelectric valve drive amplifier circuit
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Experimental program
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Embodiment 1

[0028] figure 1 A piezoelectric valve drive amplifier circuit diagram provided in Embodiment 1 of the present application.

[0029] Such as figure 1 As shown, the piezoelectric driving amplifying circuit includes: two first logic circuits 1 and two second logic circuits 2, wherein, the two first logic circuits 1 and the two second logic circuits 2 are all A first MOS transistor M1, a second MOS transistor M2, a first resistor R1, a second resistor R2, an inductor L and a Zener diode ZD are provided, and each of the first logic circuits 1 is also provided with a logic NOT gate X.

[0030] The connection relationship of each device in the two second logic circuits will be introduced below.

[0031] The drain of the first MOS transistor M1 is connected to the first reference voltage terminal. In the embodiment of the present application, the voltage of the first reference voltage terminal may be 24V. The source of the first MOS transistor M1 is connected to one end of the ind...

Embodiment 2

[0041] figure 2 A piezoelectric valve drive amplification circuit diagram provided in Embodiment 2 of the present application.

[0042] Such as figure 2As shown, the piezoelectric valve driving amplifying circuit provided by the present application includes two first logic circuits 1, two second logic circuits 2 and switch circuits 3, wherein the two first logic circuits 1 and the two second logic circuits 2 is the same as the structure of the two first logic circuits 1 and the two second logic circuits 2 in Embodiment 1, and will not be repeated here.

[0043] The switch circuit includes a third MOS transistor M3, a third resistor R3, a fourth resistor R4 and a fifth resistor R5.

[0044] In the embodiment of the present application, the other end of the second resistor R2 in a first logic circuit is connected with the other end of the second resistor R2 in a second logic circuit as a common end, and the drain of the third MOS transistor M3 pole is connected to the commo...

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PUM

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Abstract

The embodiment of the invention provides a piezoelectric valve drive amplifier circuit, which comprises two first logic circuits and two second logic circuits. By arranging a logic NOT gate in each first logic circuit, after an input signal passes through the two second logic circuits, output signals are the same with the input signal; and after the input signal passes through the two first logic circuits, the output signals are opposite to the input signal, so as to achieve the goal of controlling the output signals through the piezoelectric valve drive amplifier circuit when a single-chip microcomputer is reset in the prior art.

Description

technical field [0001] The present application relates to the technical field of valve positioners, in particular to a piezoelectric valve drive amplifier circuit. Background technique [0002] Pneumatic regulating valve is one of the industrial process control instruments widely used in petroleum, chemical, electric power, pharmaceutical, metallurgical and other enterprises. The pneumatic regulating valve is usually formed by connecting the pneumatic actuator and the regulating valve after installation and debugging. By controlling the size of the pneumatic signal entering the pneumatic actuator, the opening of the regulating valve is controlled, thereby controlling the medium flow rate of the production device to reach a predetermined value. Among them, Controlling the size of the pneumatic signal entering the pneumatic actuator is mainly done through the electric valve positioner. Therefore, the electric valve positioner plays a decisive role in the control performance a...

Claims

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Application Information

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IPC IPC(8): F16K31/02
Inventor 刘小强马林蒋浩付健田博仁
Owner CHONGQING CHUANYI AUTOMATION