An explosion-proof led lamp high temperature alarm system

Abstract

An explosion-proof LED lamp high-temperature alarm system belongs to the field of explosion-proof lighting and high-temperature abnormal alarm. The heat dissipation of LED devices is divided into two parts: primary package heat dissipation and secondary heat sink heat dissipation. The die-cast aluminum lamp body of the explosion-proof LED lamp acts as a secondary heat sink to connect the LED joint with the external environment. Under the condition of high temperature, the forward voltage of the LED under constant current is linearly and inversely proportional to the temperature. According to the relationship between the two changes, the MCU detects the terminal voltage at both ends of the LED string, and transmits this signal to the high temperature abnormal alarm host computer through the control bus. , the host computer displays on the display the schematic diagram corresponding to the position of the explosion-proof LED lamp whose detection value exceeds the set value. The upper computer controls a certain number of explosion-proof LED lamps. If the overtemperature ratio of all explosion-proof LED lamps in the same area exceeds the set value, the speaker will be activated to alarm.

Description

technical field [0001] The invention relates to an automatic alarm system, in particular to an explosion-proof LED lamp high temperature alarm system. technical background [0002] At present, in petroleum and petrochemical work sites and equipment areas, alarm devices are only installed in some important positions, so that people can get early warning in time before or when an accident occurs, and restore or reduce losses. Most of the accidents first have the abnormal phenomenon of high temperature, and then cause explosion and combustion. Due to the cost and the difficulty in the application of the alarm system, it is difficult to use general accident alarm devices on a large scale. Therefore, the current fire-fighting equipment is in the majority in the aspect of fighting after the event, and the early warning is obviously lacking. Explosion-proof lighting fixtures used in a large area only have lighting functions. If the lighting and accident alarm functions can be comb...

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Problems solved by technology

Explosion-proof lighting fixtures used in a large area only have lighting functions. If the lighting and accident alarm functions can be combined to design a high-temperature alarm system that can be popularized in a large area like explosion-proof lighting and can focus on prevention, this will This system uses explosion-proof LED lamps that are being developed and popularized, with low additional cost and convenient use. Then this lamp with explosion-proof lighting function and temperature alarm function solves the current situation that the lighting function and temperature alarm function cannot be unified.

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