Electric leakage fire prevention monitoring device based on RS485 bus

The utility model discloses an electric leakage fire prevention monitoring device based on RS485 bus relates to the numerical control field, including data acquisition module, child node controller, RS485 bus, host node controller, LCD display module, button module, alarm module, water injection valve and host computer, data acquisition module includes temperature sensor, smoke transducer, voltage transformer, current transformer, zero sequence mutual-inductor and peripheral circuit, temperature sensor and smoke transducer are used for the signal in the receiving chamber, current transformer can monitor distribution system's electric current, accomplishes the detection of overload, short circuit function, voltage transformer is responsible for monitoring voltage, the power sum electric energy circumstances of circuit, the zero sequence mutual-inductor can detect the electric leakage, the utility model discloses can detect the condition of a fire accurate, fast to the operation can link.