A large number of power cables and control cables may cause temperature rise due to installation location or excessive load, aging of cable connectors, etc., which may easily cause a fire and cause power transmission interruption. Our company has developed a fiber optic temperature monitoring system for power cables, which monitors the temperature of cables in real time and provides early warning and alarm. The system uses an all-fiber sensing passive temperature measurement method, which eliminates the hidden safety hazards of the monitoring system itself and greatly improves the availability of the monitoring system for power temperature monitoring. The new generation of distributed optical fiber temperature measurement host developed by our company adopts embedded software and hardware system, which has the advantages of stable system, compact structure and low power consumption. It adopts optical fiber sensing technology, is not affected by electromagnetic interference, is intrinsically safe and uses Long life, can operate in various harsh environments. The host is composed of laser, optical switch, WDM module (coupler and spectral separation unit), photoelectric conversion unit, and CPU processing unit. The signal processing process is: laser —> WDM module —> optical switch —> photoelectric conversion unit —> CPU processing unit. Features: • The temperature measurement host adopts embedded integrated design, which is stable and reliable, and has excellent cost performance; • Using a 5.6-inch touch screen, it can realize the functions of silence, self-test, reset, alarm query, etc., without the need of a host computer; • Low power consumption, the power consumption of the host is less than 15W, fanless design; • Support multiple fire alarm modes including early warning, differential temperature and constant temperature; • Alarm zone and alarm temperature can be set arbitrarily; • With GPRS SMS alarm function, no need to be on duty; Model W-TEL-5 W-TEL-25 Monitor distance 10KM 10KM Temperature -40-200℃ -40-200℃ Measurement accuracy ≤0.5℃ ≤0.5℃ Response time 2s/Channel 3s/Channel Spatial resolution 0.6m 1-3m Positioning accuracy 0.5m 0.25m Channel 1/2/4/8 1/2/4 Voltage AC220V 50Hz / DC24V Power 25W Max