ESS-200 series of electrical contact temperature real-time monitoring platform using micro-power wireless communication, digital temperature sensors for condition monitoring based, online automatic monitoring, early warning of high and low voltage power stations or high voltage contacts inside the bus moving and static contact temperature changes, significantly reducing the workload of field equipment inspections, effective solution to the weak parts of the switch contacts and busbars, cable connections, etc. due to aging, poor contact caused by overheating or overload problems caused by damage to the equipment, to fully enhance enterprise network equipment operation reliability, protect the safety and production. ESS-200 series of electrical contact temperature real-time monitoring platform consists of high-performance digital temperature sensor, control terminal, centralized display unit composed of three parts; and control terminal receives the temperature sensor detects the electrical contacts in real-time temperature data, and then distributed to centralized display unit display and storage, alarm and data forwarding. At the same time monitoring and control terminal is equipped with RS-485 interface (using the standard MODBUS protocol) for easy networking. This product is an ideal electrical contacts and switchgear contacts online temperature monitoring equipment. 1, the system features: ① line automatic detection: Periodic monitoring of temperature, real-time record temperature, abnormal call the police to solve the traditional way of doing inspections can not be real-time monitoring of the problem; ② wireless data transmission: temperature acquisition terminal and communications manager wireless connection between avoiding wiring wired connection, effectively improve the insulation isolation system; ③ performance temperature sensor: using high-precision digital temperature sensor can react quickly and accurately to the electrical junction temperature changes. Temperature range -20 ~ 150 ℃, accuracy ± 1 ℃; ④ over-temperature alarm: set alarm value according to the situation, when the detected temperature limit is exceeded, an alarm signal, and active alarm information is uploaded to a remote computer; ⑤ Remote Network Monitoring: with RS-485 communication interface, communication protocol in line with MODBUS protocol for remote monitoring; ⑥ HMI: with real-time monitoring of temperature display, record the history of temperature data and alarm events for a variety of site analysis the temperature of the actual work. 2, the technical parameters and characteristics (1) digital temperature sensor characteristics? Use 433MHZ (ISM) band, wireless spread spectrum technology, anti-interference ability. Intelligent wireless networking technology, eliminate co-channel interference problems, communication error rate greatly reduced;? Measuring point and the reception point no direct contact, no insulation problem, from the external environment;? Ultra-low-power design, high-energy lithium batteries Stability powered hardware, and more reliable;? wireless acquisition network flexibility, scalability, applicable to different voltage levels, real-time temperature monitoring in different environments energized equipment, installation simple inexpensive construction line. ? (2) Wireless acquisition terminal (temperature measurement host) Features Installation: rail and panel with a card in two ways; Interface:? RS485 interfaces 1; managed to acquire a wireless digital temperature sensor count:? 36 Road;? using the standard MODBUS communication protocol. ? (3) centralized monitoring unit: between the wireless collection terminal with wireless communication; can be a single power distribution room of all centralized collection terminal display; able to do on-site alarm, SMS alarm; monitoring system able to give back??? and scheduling systems provide monitoring data. (4) Technical data receiving frequency range of temperature measurement accuracy of the temperature measurement sensitivity wireless receiver radio transmission power wireless receiver power insulation 433MHz -20 ℃ ~ 150 ℃ ± 1 ℃ 500MΩ