应用半导体气敏传感器实现防毒面具滤毒盒失效指示的探讨

防毒面具的滤毒盒失效判断主要依靠嗅觉和规定使用时间，但这两种方法都存在明显局限。多年来人们寻求用一种客观的方法指示滤料失效。章对应用半导体气敏传感器实现防毒面具滤毒失效指示进行了探讨，对气敏元件的基本原理、选择性、分辩力、重复性、响应时等主要技术参数进行了阐述，对使用CGS气敏传感器的试验结果进行了分析讨论。结果表明，应用半导体气敏传感器实现防毒面具滤毒盒失效指示的技术途径是可行的，有着广泛的潜在市场和较大的社会经济效益。

Exploration of Realizing Indication of Losing Efficacy of Filtrating Box of Protective Mask by Using Semiconductor Gas Sensitive Transducer

Determining losing officacy of filtrating box of protective mask is mainly depend on sense of smell and fixing time of use,but these two methods exist obvious limitations. For many years peoples have been exploring objective method indicating losing efficacy of filtrating box. The article discussed the indicating method of losing efficacy of filtrating box by using semiconductor gas sensitive transducer, discussed the principle, selectivity, sensitivity, repetition, responding time and ending time of security police of semiconductor transducer,analyzed the results of test of using CGS semiconductor transducer, finally indicated that the technique of indicating losing efficacy of filtrating box by using semiconductor transducer is feasible,and this technique exists extensive potential market and fairly effect upon society and economy.