Low-power Cable Well Fire Alarming System Based On Internet Of Things

While the traditional electric power industry advances in technology,there is a certain contradiction between the existing electric power infrastructure and urban demand.Due to the rapid increase in electricity demand in cities,the lines laid in cable wells are becoming increasingly complex,leading to continuous increase in potential fire hazards.Only the new high-voltage and ultra-high-voltage cable lines have corresponding early warning systems.Most urban cable trenches are currently used.The traditional way of maintaining the hidden dangers of skilled workers on the spot is becoming increasingly unsustainable.For urban electricity safety,it is of great significance to design a real-time practical cable well fire warning system.As the most widely used cable trench warning system in the city,it is always constrained by the construction cost.The system that accesses the internal power resources of the cable well is faced with huge installation and maintenance costs or inconvenient installation conditions.The problem of poor equipment life and poor real-time performance.This paper takes the background of the cable bore fire early warning system project of Disen Electric Co.,Ltd.,and analyzes the research status of cable shaft warning systems at home and abroad,and combines the local conditions in Kunming.(1)We have determined the direction of low-power real-time warning.By using the product’s own 14V dry battery,we have achieved a breakthrough in the existing power supply for our own early-warning system,and at the same time we have significantly reduced the size of the front-end sensing device,making it very convenient for product installation.(2)The innovative trigger wake-up technology is used to wake up the device through real-time clock timing triggering and intrusion alarms,which solves the longevity problem caused by high RF emission power consumption in real-time systems.(3)The scientific use of infrared array temperature measurement theoretically solves the problem of high sensitivity and accuracy in temperature measurement.(4)Connect the GPRS wireless communication module and establish the cable well detection data network with the Internet of Things technology.At the same time,staff can also adjust product parameter settings through SMS.(5)Through the server and the development of mobile phone APP let the staff at any time to monitor the network operating status and adjust the front-end perception layer device parameters.A database is established to store and analyze the large amount of data already existing in the monitoring point network,and to effectively predict the operating conditions of cable wells,so as to truly play a pre-warning role.The innovations in this article are as follows:(1)Efficient energy-saving strategy,together with the original triggering wake-up mechanism,makes the traditional battery-powered system design last for more than 10 days to 2-3 years;(2)Efficient algorithm optimization,making the infrared array The temperature measurement works well in the embedded system,reducing the time for one temperature acquisition to within 23 milliseconds.Through on-site inspection,the real-time performance of the system is good.The ultra-small size of the front-end sensing device is suitable for installation in all current cable wells.The innovative design of the triggered wake-up enables it to support up to 3 years of battery life.Sensitive infrared array temperature measurement has a very good The high accuracy,feature-rich mobile phone APP and web platform make the data network more perfect.In general,it basically meets the functional requirements of the urban cable shaft fire warning system.