Door lock recording device
OwnerKi Sheung Yuen, Ying Wai Chik +1inventors
InventorsKi Sheung Yuen, Ying Wai Chik, Yiu Kong Wong
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Abstract
A device electronically tracks the use of a key to open or close a lockset and retain information of the key to allow a user to query the device and receive information with respect to the last recorded status. The device includes an actuating arrangement to allow tracking of the acceleration of the key during a locking or unlocking motion. These tracked signals are evaluated relative to at least two known signals indicative of a locking movement or an unlocking movement. The user is able to query the device at a later point in time and receive timing information of the present status and timing information between changes in status.
Claims20
A status device for tracking the use of a key in association with the opening or closing of a lockset, said device comprising
- a switch arrangement activated during the opening or closing of a lockset,
- an accelerometer associated with said key for detecting movement of the key during the opening and closing of the lockset,
- a processing arrangement for analyzing the detected movement of the key and determining whether the lockset has been opened or closed,
- said processing arrangement maintaining a status of the lockset based on the movement of the key, and
- a display for providing a visual indication of the status of the lockset as maintained by the processing arrangement.
A device for tracking the status of a key determined by the use of the key to open or close a lockset, said device comprising
- a sensing arrangement for sensing rotation of a key in a lockset;
- a processing arrangement for evaluating the sensed signal and determining a locked status of said key or an unlocked status of said key by evaluating the sensed signal and determining a locked status if the sensed signal corresponds to a predetermined reference signal indicative of a signal produced during rotation of the key to lock a lockset and determining an unlocked status if the sensed signal corresponds to a predetermined reference signal indicative of a signal produced during rotation of the key to unlock a lockset;
- a display arrangement on said device for selectively displaying the most recent status of said key.
A method of tracking use of a key to lock or unlock a lockset comprising the steps of
- sensing rotation of a key in a lockset;
- determining a locked status of said key if the sensed rotation corresponds to a predetermined signal indicative of key rotation to lock a lockset or determining a unlocked status of said key if said sensed signal is indicative of a predetermined signal corresponding to rotation of said key to unlock a lockset;
- and
- selectively displaying the determined status of said key.
Dependencies are inferred from the claim text.