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555时基电路自80年代初从美国引进开发以来,已在工业自动控制、仪器仪表、电子乐器和家用电器等各个领域得到广泛的应用,但在海洋仪器和测温传感器中的应用还未见报导。我们在研制机载抛弃式遥测温度计时,采用了555时基电路。该电路只需要很少的外围元件,就能产生稳定而较精确的频率信号,故测温传感器具有结构简单,不要调试,标定方便,精度较高,稳定性好,造价低廉的特点。我们研制的机载抛弃式遥测温度
Since the introduction and development of the 555 time base circuit from the United States in the early 1980s, it has been widely used in various fields such as industrial automatic control, instrumentation, electronic musical instruments and household appliances, but application to marine instruments and temperature sensors has not been seen yet Reported. We developed a 555 time-base circuit when developing an airborne remote thermometer. The circuit only requires a few external components, can produce a stable and accurate frequency signal, so the temperature sensor has a simple structure, do not debug, calibration convenient, high precision, good stability, low cost features. We developed airborne remote telemetry temperature