| 摘要 |
An emergency door stopper connection circuit for a fire alarm system is provided to monitor an intruder by coupling a proximity switch with an automatic fire sensor system receiver. A power distribution terminal(111) receives power from an automatic fire sensor system receiver. A key switch(113) is coupled with the power distribution terminal and turns on/off the power. A proximity switch(114) is coupled with the key switch and configured to activate the power, when an emergency door is opened. A buzzer(117) is connected to the proximity sensor and generates an alarm sound, when power is received. A primary battery(119) is connected to key switch and the proximity switch. A secondary battery(121) is connected to the key switch and the proximity switch. A constant voltage IC(123), a diode(125), and a limiting resistor(127) are coupled between the secondary battery and the power distribution terminal, such that power is supplied to the secondary battery. |
