Passive wireless temperature measurement system is a temperature measurement system, with a variety of temperature monitoring methods. At present, there are three kinds of the most widely used. The first is the CT type, through the CT power supply for the sensor power supply, but because the line current is not necessarily, so the power supply is not stable, and the sensor itself consumes energy in limited ways, long-term high-current work may cause their own fever and thus affect the accuracy of temperature measurement Sex. The second is the surface acoustic wave, through the sound waves in different temperature environments to measure the temperature at different speeds, this method is similar with infrared temperature measurement. The third is RFID technology. The host transmits energy to a passive sensor through a transmitter. The sensor measures the temperature after receiving the energy and then wirelessly transmits it back to the host.
Main advantages: 1, no battery or power supply 2, not easy to aging and pollution 3, with the same life switch cabinet
4, to adapt to different environments 5, high precision without potential difference 6, free from electromagnetic interference
1) a variety of temperature monitoring methods
The system sets the task of automatic acquisition, timing acquisition of switchgear temperature information in accordance with the established sampling frequency. The temperature data is stored in the database, and the user can set the time interval and specify the monitored object to query the historical temperature information.
At the same time, the user can specify a specific switchgear or sensor in the master system for real-time temperature information acquisition.
2) a complete alert mechanism
When the absolute value of the temperature of the switchgear or the rate of change of temperature exceeds the upper limit, the system provides alarm information for operation and management personnel in various manners such as voice, photoelectricity and text message. Timely or predictable discovery and troubleshooting, so as to maximize the safe and stable operation of power equipment.
3) Improve the system parameter settings
The establishment of various levels of switchgear temperature monitoring and management network management temperature monitoring related switchgear, sensors, readers and other equipment files.
Specified switchgear or a specific temperature sensor for remote distribution of parameters, including sensor temperature calibration, various types of early warning, time, temperature acquisition frequency, sensor transmit power, signal acceptance threshold and so on.
4) rich data show
On the monitored object, the system can select a group of sensors in a switchgear to monitor the temperature information, or monitor the temperature information of multiple switchgears in a region (such as a station area and a line).
For the history of temperature information, the system provides a variety of ways to display lists, curves, etc., for the convenience of users to view.
5) Fault diagnosis and prediction
System provides switchgear temperature and real-time load control and other means of abnormal temperature troubleshooting.
According to the existing temperature data and its variation, according to the established prediction algorithm to provide users with the temperature prediction results, and compare the predicted value with the warning value, and found that there is an abnormal probability of sending temperature alarm information.
6) powerful statistical analysis
The system automatically generates various types of statistical reports based on historical temperature data, such as temperature anomalies statistics by region, voltage level and switchgear model. Various types of statistical reports and KPIs can be published through the system portal.