The Design and Application of Methane-Concentration Detector with Multiple Function and Low Consumption

吕玉祥; 刘宏林

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The Design and Application of Methane-Concentration Detector with Multiple Function and Low Consumption

更新时间：2026-09-14

- The Design and Application of Methane-Concentration Detector with Multiple Function and Low Consumption
- 多功能低功耗甲烷浓度检测仪的设计与应用
- Issue 3, Pages: 268-271(2006)
- 作者机构：
  
  太原理工大学物理系
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2006
- 稿件说明：
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吕玉祥, 刘宏林. The Design and Application of Methane-Concentration Detector with Multiple Function and Low Consumption[J]. 2006, (3): 268-271.
DOI：

吕玉祥, 刘宏林. The Design and Application of Methane-Concentration Detector with Multiple Function and Low Consumption[J]. 2006, (3): 268-271. DOI：

摘要

设计了一种新型的甲烷浓度检测仪

选用包含M CS-51内核、A/D转换、4 KROM的微控制芯片87LPC 767作为CPU;采用目前应用相对成熟的黑白元件与热电导元件作为高低浓敏感元件;采用了FSK调制输出方式、485数字输出方式、(1

)mA或(4~20)mA的电流输出方式、(5~15)H z或(200

000)H z频率输出方式等多种输出方式的接口电路;设计了遥控接收电路

配合软件技术可进行报警值、断电值、零点值、线性度、编号值等多项参数的调校;在电源方面设计了高转换效率的DC-DC转换器

结合低功耗芯片的选择与软件中的滤波技术、轮流报警与显示等技术

使整个仪器的功耗降为18 V/35 mA

比目前广泛使用的甲烷传感器功耗降低了35%.

Abstract

A methane-concentration detector together with its corresponding remote receiving circuit has been designed in this paper.The detector adopts MCS-51 as its inner control unit

which includes an A/D converter and a 4 K ROM(87LPC767) as its CPU;the detector also adopts a catalytic sensor and a conductivity sensor to sense concentration signal.The interface of the detector includes FSK modulation and 485 digital signal output

) mA and in(4~20) mA current output

and (5~15) Hz and(200~1000) Hz frequency output.The remote receiving circuit can adjust the threshold level of alarm

power-off

linearity and other parameters.The power source adopts an effective DC-DC converter

which has reduced the power consumption of the whole detector to 18 V/35 mA.

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references

S tew art G.D es ign of a fibre optic m u lti-po in t sensor for gas detection[J].Sensors and A ctuators B,1998(51):227-232.

赵海山.探测空气中甲烷气体的小型气体敏感器[J].红外与激光工程,1999(4):33-36.Zhao H a ishan.Sensor for detection of atm ospheric m ethane[J].In frared and L aser Eng ineering,1999(4):33-36.(in Ch inese)

易继锴.智能控制技术[M].北京:北京工业大学出版社,1999:206-211.

陈杰.传感器与检测技术[M].北京:高等教育出版社,2002:197-203.

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