Method of operating an access control system

摘要

A method of operating an access control system connectable to a power supply, including the steps of comparing the supplied power voltage to a threshold power supply voltage, determining a power-good condition when the supplied power voltage exceeds the threshold power supply voltage, determining a power-fail condition when the supplied power voltage does not exceed the threshold power supply voltage, and in response to the power-good condition: charging a capacitor to a capacitor charge not less than a threshold charge, and thereafter powering an electromechanical actuator, transitioning the access control system to a first state selected from locked and unlocked states wherein the capacitor charge is not less than the threshold charge upon completion of the transitioning, and in response to the power-fail condition: powering with the capacitor the electromechanical actuator and transitioning the access control system to the another of the locked and unlocked states.

主权项

1. A method of operating an access control system selectively connectable to a power supply configured to supply power to the access control system when connected thereto, the access control system including a capacitor and an electromechanical actuator operable to transition the access control system between a locked state and an unlocked state, the method comprising the acts of:
sensing a voltage of the supplied power; comparing the supplied power voltage to a threshold power supply voltage; determining a power-good condition when the supplied power voltage exceeds the threshold power supply voltage, and determining a power-fail condition when the supplied power voltage does not exceed the threshold power supply voltage; and in response to the power-good condition:
charging, with the supplied power, the capacitor to a capacitor charge not less than a threshold charge; and thereafterpowering, at least partially with the supplied power, the electromechanical actuator;transitioning, with the electromechanical actuator, the access control system to a first state selected from the locked state and unlocked state;wherein the capacitor charge is not less than the threshold charge upon completion of the transitioning; and in response to the power-fail condition:
powering, with only the capacitor, the electromechanical actuator; andtransitioning, with the electromechanical actuator, the access control system to the other of the locked state and unlocked state.