红外遥控仰卧起坐达标测试仪的研制

Study and Making on A Frequency Indicator of Sit-ups

本文论述了红外遥控仰卧起坐测试仪的原理，着重介绍了红外发射器的结构和原理。通过干簧管、红外发射二极管的应用以及电路上的独特设计，使得在较小体积的限制下，实现了发射瞬时功率大，静态微功耗，发射准确，限位发射等功能，从而使得本仪器的使用价值大大提高。

The principle about frequency indicator of sit-ups based on infrared remote control is discussed,the structure and the principle of infrared emitter are emphasized in this paper.The emitter was built on one special circuit with infrared diode and one dry reed relay.It is very small,but can emit the strong power with the micro-power consumption in non-emitting state and emit the accurate signal at the fixed body position.Thus,the use value of the indicator is raised extremely.