摘要:
A drive mechanism for door hardware, such as a pushbar exit device, includes a driver for moving a component of the door hardware, a controller for controlling the operation of the driver, a sensor for detecting motion of the moving component and a spring connected between the driver and the door hardware component. The spring allows the driver to move for a period of time after the component has stopped moving. The controller monitors the sensor and moves the component until the sensor indicates that the driven component has stopped moving. The sensor produces an output signal and the controller detects an inflection point in the output signal when the component stops moving while the driver is still operating.
摘要:
A drive mechanism for door hardware, such as a pushbar exit device, includes a driver for moving a component of the door hardware, a controller for controlling the operation of the driver, a sensor for detecting motion of the moving component and a spring connected between the driver and the door hardware component. The spring allows the driver to move for a period of time after the component has stopped moving. The controller monitors the sensor and moves the component until the sensor indicates that the driven component has stopped moving. The sensor produces an output signal and the controller detects an inflection point in the output signal when the component stops moving while the driver is still operating.
摘要:
Electrified access-control technology devices for a door, particularly electrified locks for a door, having embedded circuitry therein, and methods of making the same. One or more printed circuit boards (PCBs) having various electronic circuitry are secured inside a housing that encases an access-control device, particularly a lock, for a door. The one or more PCB(s) may be embedded on an internal surface of the housing such that the embedded PCB resides inside the housing along with the lock itself. The embedded PCB(s) avoid interference of both any working components of the lock inside the housing and any openings residing in the housing.
摘要:
Electrified access-control technology devices for a door, particularly electrified locks for a door, having embedded circuitry therein, and methods of making the same. One or more printed circuit boards (PCBs) having various electronic circuitry are secured inside a housing that encases an access-control device, particularly a lock, for a door. The one or more PCB(s) may be embedded on an internal surface of the housing such that the embedded PCB resides inside the housing along with the lock itself. The embedded PCB(s) avoid interference of both any working components of the lock inside the housing and any openings residing in the housing.
摘要:
Electrified access-control technology devices for a door, particularly electrified locks for a door, having embedded circuitry therein, and methods of making the same. One or more printed circuit boards (PCBs) having various electronic circuitry are secured inside a housing that encases an access-control device, particularly a lock, for a door. The one or more PCB(s) may be embedded on an internal surface of the housing such that the embedded PCB resides inside the housing along with the lock itself. The embedded PCB(s) avoid interference of both any working components of the lock inside the housing and any openings residing in the housing.
摘要:
Electrified access-control technology devices for a door, particularly electrified locks for a door, having embedded circuitry therein, and methods of making the same. One or more printed circuit boards (PCBs) having various electronic circuitry are secured inside a housing that encases an access-control device, particularly a lock, for a door. The one or more PCB(s) may be embedded on an internal surface of the housing such that the embedded PCB resides inside the housing along with the lock itself. The embedded PCB(s) avoid interference of both any working components of the lock inside the housing and any openings residing in the housing.
摘要:
An electromagnetic lock monitoring system for monitoring the strength of a magnetic field in an electromechanical lock which is created when a steel armature plate is closed against an electromagnet. The system utilizes dual Hall Effect devices positioned in such a way that both ends of the electromagnet and both magnetic fields are monitored, and that the resulting monitoring effectively covers the complete contact surface between the electromagnet and the armature plate. Preferably, the Hall Effect devices are disposed in series at the point of maximum flux density within the center element of an E-shaped electromagnetic core, at opposite ends of the core. If the magnetic flux is below a preset limit, a relay also in series drops out, triggering an alarm which may be sonic, electronic, and/or visual, as is known in the prior art.
摘要:
A privacy keypad providing privacy for keypad character entry and concealment of a joint in an escutcheon. A privacy keypad may include a faceplate, a keypad disposed on the faceplate, and at least one protrusion integral with the faceplate. An escutcheon for a door lock may include a housing, a keypad disposed on the housing for unlocking the door lock, and at least one protrusion integral with the housing. The protrusion may obstruct at least partially a line of sight to the keypad. An escutcheon may include top and bottom covers with the top cover projecting outward from the surface of a door more than the lower cover, resulting in an at least partially hidden joint between covers. Top and bottom covers may be interchangeable with covers having similar edges.
摘要:
A magnetically-actuated, proximity switch system for use in physical security monitoring systems, machinery control systems and the like, including a stationary assembly and an actuator assembly moveable relative thereto. The stationary assembly includes at least two electrically-interconnected magnetic reed switches and at least two interacting permanent biasing magnets disposed in a predetermined physical relationship. The magnets are arranged to have opposing polarity orientations which produce a resultant interactive magnetic field. Each reed switch is biased in a magnetically actuated state by its orientation and position within that field. The actuator assembly in turn includes at least two permanent actuating magnets arranged to produce a number of apparent magnetic poles corresponding to the number of apparent (or consequent) poles produced by the permanent biasing magnets and in opposition thereto. Thereby, the permanent magnet resultant interactive field is altered, thereby overcoming the effect of the permanent biasing magnets when the stationary assembly and the actuator assembly are in a predetermined relative physical relationship. The number of apparent poles is odd, and they are interactive so that the stationary assembly advantageously cannot be deceived or defeated using only a single permanent external magnet. A ferrous metal slug can be provided between the two bias magnets to aid in adjusting the positioning of the components to yield the desired performance and to magnetically short out a powerful individual magnet that could be eternally positioned in the center of the bias magnets in an attempt to defeat the device. A U-shaped ferrous metal shield can be used as an outer enclosure for the switch module.
摘要:
A door release system including a capacitive circuit that includes a touch bar, a microprocessor within the touch bar programmed with noise-discrimination software to sense touching of the bar, and at least one micro-switch within the bar to function as a back-up that picks up movement of the bar to release the latch should the capacitive circuit fail. Optionally, a sign illuminated by LEDs and an antimicrobial coating/treatment may be applied to the bar. The system is intended for use on magnetically locked doors. The addition of the micro-switches that are actuatable by continued movement on the touch bar after the bar is initially touched provides a redundant access function initiated by other than the capacitive effect of human touch, which is expected to simplify use and ease accessibility for personnel with prosthetics or who may otherwise have their hands occupied.