高温环境中光触发开关的设计

 针对在高温环境中测试仪器的供电方式问题，利用光敏二极管响应时间短并对光灵敏的优点，将其作为供电电源的开关，吸收高温辐射源发出的红外光信号，通过光电转换，使电源导通，达到开关的效果。文中阐述了这种光控的供电方式的理论依据和实现方式，排除了日光等因素的干扰，并对该方法进行了验证。通过试验证明，该方法操作简单，实用性强，很适用于一些不适合人为操作的场合。

Light triggered switch in high temperature environment

To provide a power supply for a test instrument operating at high temperature environment,a scheme of using a photodiode as the switch of the power supply was developed,which had the advantages of short response time,high sensitivity and so on.The photodiode received the infrared ray emitted by the high-temperature emitter,the power was switched on after optical-electric conversion,and the desired results were achieved.This paper introduced the concept of the optically controlled switch and its implementati...