气敏信号的远距离多点采集与调频载波传输  

The Multi-Dotted Sampling and Frequence Modulated Carrier Transmission of Gas Sensitive Signals as Long Distance

作　　者：顾文照[1] 

机构地区：[1]中国药科大学药学院

出　　处：《东南大学学报（自然科学版）》1995年第5期131-137,共7页Journal of Southeast University：Natural Science Edition

摘　　要：本文阐明用ｖ－ｆ转换方法将采样电压信号转换成频率信号后可解决气敏信号在远距离多点采集和传输中的高共态干扰、衰减和噪声的影响，同时又进一步指出转换后的调频频率信号可以藉探头－主机间的电源馈送电缆以直流载波方式经济地传输，研究了气敏信号源、转换与传输中的接口等问题，并提供了相关的研究实例和结果。A high common-mode disturbance,decaying and noice exist in the multi-dotted samplingand transmission of gas sensitive signals at long distance,This pepor explains that these problems can besolved by v-f conversion,and further points out that the converted frequence-modulated signals can betransmitted along power cable by means of direct current carrier economically.The signal sources ofgas sensors and interconnect of conversion and transmission are discussed.The related examples and re-sults are provided.

关 键 词：气敏信号 多点检测 载波传输 调频 气敏元件 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]