低温冷冻治疗仪的研制

The development of low temperature cryotherapeatic equipment

介绍一种由单片机控制的低温冷冻治疗仪。重点阐述了恒流桥式测温电路、压—频转换器与单片机的接口、单片机与LCD的接口电路结构及原理。该仪器使用方便，成本较低，对定量研究低温治疗的最佳治疗温度具有十分重要的临床应用价值。

This paper introduces a low temperature cryotherapeatic equipment controlled by80C51 single-chip microcomputer. The structure and operation principle of the constant currentbridge circuit used for measuring temperature,VFC converter,LCD display and computer interface circuit were discussed in the first place. The equipment can be used widely in clinic for determining the optimum therapy parameter in studying cryotherapy.