KR930022087A

KR930022087A - Gas velocity measuring device using ion phenomenon

Info

Publication number: KR930022087A
Application number: KR1019920005546A
Authority: KR
Inventors: 김현진; 주광혁
Original assignee: 김영욱; 생산기술연구원
Priority date: 1992-04-03
Filing date: 1992-04-03
Publication date: 1993-11-23

Abstract

본 발명은 기체의 유속을 측정하는 장치에 관한 것으로 고전압을 공기 중에 가할 때 발생되는 공기 이온화 영역에서 공기중에 흘러가는 이온의 양이 공기의 흐름에 따라 차이가 생기는 원리를 이용한 것으로, 마이크로프로세서 기억장치, 키입력 및 표시처리기 표시장치, 키보상회로, D/A 변환기, A/D변환기, 전류-전압변환회로, 가감산회로, 정전류 유지제어 회로, 고전압발생기, 유속측정프로브를 상호 연결 구성한 것으로 간단한 구성으로 고장이 없고, 제조원가를 절감하여 구입이 용이하도록 하며 난류영역에서의 측정도 가능하게 한 것이다.The present invention relates to a device for measuring the flow rate of a gas, and uses the principle that the amount of ions flowing in the air varies depending on the flow of air in the air ionization region generated when a high voltage is applied to the air. Key input and display processor Display device, key compensation circuit, D / A converter, A / D converter, current-voltage conversion circuit, add / subtract circuit, constant current control circuit, high voltage generator, flow rate measurement probe With no configuration, there is no breakdown, and manufacturing cost is reduced, so it is easy to purchase and measurement in turbulent area is also possible.

Description

Gas velocity measuring device using ion phenomenon

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 장치의 전체구성을 보인 회로도.1 is a circuit diagram showing the overall configuration of the apparatus of the present invention.

제2도는 본 발명 장치를 설명하기 위한 흐름도.2 is a flow chart for explaining the apparatus of the present invention.

제3도는 본 발명 장치 중 속도 측정용 코로나프로브의 외관사시도.Figure 3 is an external perspective view of the corona probe for measuring the speed of the device of the present invention.

Claims

In the control circuit of the speed measuring instrument 1 for measuring the flow rate of air, a predetermined program and a storage device 2 for storing data and a microprocessor for performing an overall control function by a predetermined program are provided. 3) a display device 4 for displaying physical quantities such as key input and speed, a key 5 for inputting various data, and a key input for controlling the key 5 and the display device 4; And a display processor (6), a D / A converter (7) for converting a predetermined digital signal output from the microprocessor (3) into an analog signal and applying it to the constant current holding control circuit (8); An A / D converter 10 which converts a predetermined analog signal output from the circuit 8 into a digital signal and inputs it to the microprocessor 3 via the compensation circuit 9; and the A / D converter 10 Drift of ions in response to the output signal of Compensation circuit 9 for correcting the measurement error generated in the phase and applying it to the microprocessor 3, and converting a predetermined current output from the measuring probe 으로 into a voltage and outputting it to the addition and subtraction circuit 11 A current-voltage conversion circuit 12 for calculating, an addition and subtraction circuit 11 for calculating the current value input from the current-voltage conversion circuit 12, and outputting it to the constant current holding control circuit 8; The constant current holding control circuit 8 and the signal output from the constant current holding control circuit 8 described above are inputted to maintain the sum of the current values input from the two cathode terminals of (a). A high voltage generator 13 for applying a high voltage to the anode, one anode portion 20 connected to the outside of the speed measuring instrument 1 to which a high voltage is applied, and two cathode portions 21 for sensing a minute current. Probe for measuring the flow rate consisting of A flow rate measuring device of the substrate using a phenomenon in which ions, characterized in that configuration.

※ Note: The disclosure is based on the initial application.