无线无源在线测温监控系统

Wireless passive online temperature monitoring system 

随着社会的发展开关柜的应用越来越广泛，开关柜的安全越来越受到人们的重视，各类设备的开断接触点，由于制造、环境污染因、触点氧化、电弧冲击等原因造成接触电阻增大，在运行时往往不断发热，温度不断上升，给设备安全运行埋下隐患，如果不及时发现，容易导致起火或爆炸，造成大量财产损失。为此，河姆渡从设备安全的角度出发，推出无线无源在线测温监控系统定制。

More and more widely with the development of the society of the switchgear applications, the security of the switchgear has become more and more get the attention of the people, all kinds of equipment of open circuit contact point, due to the manufacturing, and environmental pollution due to the arc, contact oxidation and impact causes such as contact resistance increases, often at run time constant fever, temperature rising, a dangerous precedent for the safe operation of the equipment, if not found in time, easy to cause fire or explosion, cause a lot of damage to property. Therefore, hemudu culture from the perspective of safety equipment, introduced wireless passive online temperature monitor system customization. 

 

传统的红外、光纤及有源无线测温系统在安全性、适用性、稳定性、实时性等方面存在一定的技术缺陷。无源无线温度在线监测系统，将基于声表面波技术测温技术应用于高压电力设备的温度在线监测，实现了无源无线的温度测量方式，有效的解决了传统测温技术在安全性、可靠性、稳定性、实用性等方面存在的问题。

Traditional ir, optical fiber and active wireless temperature measurement system in such aspects as safety, suitability, stability and real-time performance has certain technical defects. Passive wireless temperature online monitoring system, the temperature measurement technology based on surface acoustic wave technology was applied to the temperature of the high voltage power equipment on-line monitoring, achieve no source wireless temperature measurement methods, effectively solve the traditional temperature measurement technology in such aspects as safety, reliability, stability, practical problems. 

>>>>无线无源测温原理：

> > > > passive wireless temperature measuring principle: 

1.无线采集器通过天线发射无线射频信号作为传感器激励信号。

1. The wireless terminal transmission radio frequency signal as the sensor by antenna excitation signal. 

2.传感器天线接收该无线射频信号，通过叉指换能器的逆压电效应在基片表面激活一个声表面波。声表面波沿基片传播，被左右两个周期性反射栅反射形成谐振。该谐振器的谐振频率与基片的温度有关。叉指换能器通过压电效应将声表面波转变成应答的无线射频信号输出。

2. Sensor antennas for the wireless radio frequency signal, through the fork refers to the inverse piezoelectric effect of transducer in the substrate surface activation of a surface acoustic wave. Surface acoustic wave propagation along the substrate, by about two periodic resonance reflection grating formation. The resonant frequency of the resonator is associated with the temperature of the substrate. Fork refers to the surface acoustic wave transducer with piezoelectric effect into response of radio frequency signal output. 

3.返回的无线射频信号被采集器天线接收，通过测量无线射频信号的频率变化即可得到温度值。

3. To return to the wireless radio frequency signals are collector antenna, by measuring the frequency of the radio frequency signal changes can get temperature value.