摘要
在材料、生物、安全和医疗卫生等领域的科学试验中,经常需要在一个完全密闭的系统内进行实验。为了保持系统密闭性不受影响,避免实验参数出现失真,较好的方法为空间内独立测量传输,尽量避免系统打孔,减少系统内外部联系。为解决以上问题,分析了金属密闭空间内电磁波无法进行传输的原因,提出使用超声波完成信号传输的方案。系统以stm32为控制器,通过外围电路驱动超声波换能器激发超声波,来传输温度压强数据。实验测量表明,系统可完成密闭空间的测量通信功能,温度误差在0.1度,压强误差小于0.1%FS,具有较好的应用前景。
In the science tests of biology, health and safety and other areas are often necessary in the environment of a completely closed system,measuring the parameters through the experiment. In order to not affect the closed system , avoid the distortion of the experimental parameters, the better approach is to avoid to drill the system, reducing external links of the system .To solve the above problems, analyzing the causes of the unable to transport the electromagnetic waves through the closed metal space ,proposing the project of using ultrasonic wave to transmit signals.The system takes the STM32 as the controller, through the peripheral circuit to drive the ultrasonic transducer to excite the ultrasonic wave, to transmit the temperature pressure data. Experimental measurements show that the system can complete the measurement of the closed space communication function, the temperature error of 0.1 dem＇ees, the pressure error is less than 0.1%FS. has a good application prospects.
出处
《仪器仪表用户》
2017年第5期8-11,共4页
Instrumentation
基金
广西自动检测技术与仪器重点实验室主任基金项目(YQ15116)
桂林市科技攻关项目(20140103-6)
桂林市科技攻关项目(20150103-3)
关键词
超声波通信
电磁屏蔽
温度压力检测
高温高压设备
ultrasonic
electromagnetic shielding
temperature and pressure measurement
high temperature and highpressure equipment
