Visual intercom indoor terminal with security and protection function

The invention discloses a visual intercom indoor terminal with a security and protection function. The visual intercom indoor terminal comprises a microprocessor, a security monitoring module and a smoke detection circuit, wherein the microprocessor is connected with a visual intercom module, the security monitoring module, an emergency power supply automatic switching module, an emergency evacuation module and a communication interface respectively, the security monitoring module comprises the smoke detection circuit, a temperature detection circuit and a fuel gas leakage detection circuit, the smoke detection circuit comprises a detection passage circuit and a reference passage circuit which are respectively connected into two input ends of a differential amplification circuit I, and the output end of the differential amplification circuit I is connected with a threshold comparing circuit I in series. The visual intercom indoor terminal has the beneficial effects that on one hand, danger situations can be accurately and quickly forecast by utilizing a multi-sensor fusion technology, and on the other hand, the visual intercom indoor terminal is arranged at vantage positions close to gates or passages, when accidents happen, emergency switches are automatically switched, and trapped personnel can be emergently guided and evacuated, so that great property loss and personnel injury accidents are prevented from occurring.