Early warning system design of cable equipment electrical contact temperature based on DS18B20

Abstract

In order to effectively monitor and warn the temperature of electrical contact and maintain the smooth operation of cable equipment, DS18B20 temperature sensor was introduced into the monitor module to improve the connection efficiency of temperature information of each contact, collect the temperature information of electrical connectors in real time, and reduce the time of temperature analysis and processing resources. Then an internal communication conversion mechanism was constructed by configuring the marking controller with different transmission channels to weaken the differences between data, normalize the data format, remove noise and invalid data, and effectively shorten the time of data transmission. Based on the above process, the change of indicator color and voice reminder were used to realize the over temperature warning, and the specific monitoring and warning process was designed. The experimental results show that the temperature data collection time of this system is always less than 6s, which is much lower than the 10 s and 9 s of the comparison system, and the minimum false alarm rate of the system in this paper is only 4.27%. Even though the highest false alarm rate is only 6.02%, it is lower than 11.18% and 16.62% of the comparison system, only one-half of the comparison system, proving that the system can effectively achieve temperature monitoring and early warning.

Keywords

• cable equipment
• electrical contact
• temperature monitoring
• over temperature warning
• data normalization
• data conversion