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Rapid fluid flow control device

A control device and fluid measurement technology, applied in the flow control of electric devices, volume/mass flow generated by electromagnetic effects, etc., can solve problems such as poor control accuracy, slow response time, and accuracy interference, and achieve precise control and high response Speed, to achieve the effect of flow control

Active Publication Date: 2009-05-27
BEIJING SEVENSTAR ELECTRONICS CO LTD
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, due to the accuracy and interference problems in digital-to-analog conversion, and the back electromotive force of the actuator itself
Such products have poor control accuracy and slow response time at low set points, such as below 30% of full scale

Method used

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Embodiment Construction

[0017] A kind of fast fluid measurement control device as shown in Figure 1, this control device comprises sensor, solenoid valve and measuring device, and described measuring device comprises microprocessor, sensor circuit, solenoid valve circuit, first A / D converter, The second A / D converter and setting circuit, the sensor circuit is connected with the sensor to receive the sensor signal; the solenoid valve circuit is connected with the solenoid valve to adjust the flux of the solenoid valve; the sensor circuit and the solenoid valve circuit are connected with the micro Processor connection. The first A / D converter is connected between the sensor circuit and the microprocessor, and transmits the signal of the sensor circuit to the microprocessor. The second A / D converter is connected between the solenoid valve circuit and the microprocessor, and transmits the signal of the solenoid valve circuit to the microprocessor. The setting circuit is electrically connected with the f...

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Abstract

The invention discloses a fast fluid flow control device, which comprises a sensor, an electromagnetic valve and a measuring device, wherein the measuring device comprises a microprocessor, a sensor circuit and an electromagnetic valve circuit, the sensor circuit is connected with the sensor and is used for receiving signals from the sensor; the electromagnetic valve circuit is connected with the electromagnetic valve and is used for adjusting the flux of the electromagnetic valve; and both the sensor circuit and the electromagnetic valve are connected with the microprocessor. The fast fluid flow control device effectively solves the control precision problems caused by errors and the interfered analog quantity in the process of digital analogue conversion, and can solve the problems of slow control speed and overshoot caused by reverse energy change of an actuating mechanism simultaneously; besides, the fast fluid flow control device can control the passing fluid flow precisely and achieve the flow control at high response speed.

Description

technical field [0001] The invention relates to a rapid fluid flow control device, in particular to a flow control device capable of rapidly and accurately measuring the flow of various gases or liquids. Background technique [0002] Flow measurement and control is a very important part of the industrial field. Flow meters currently on the market can be divided into gas flow controllers and liquid flow controllers. A flow controller can be used to control the flow through the device. [0003] The vast majority of flow controllers are based on the analog method. The analog technology mainly uses the operational amplifier as the basis, and sends out the control amount through a relatively amplified method to control the actuator (usually a solenoid valve, a proportional valve or a thermal valve, etc.). The problem with the flow control device using the analog control method is that the accuracy is often difficult to guarantee, and because the control mechanism achieved by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D7/06G01F1/56
Inventor 牟昌华赵迪吴薇任小兵
Owner BEIJING SEVENSTAR ELECTRONICS CO LTD
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