Key with proximity switch
A technology of proximity switch and Hall proximity switch, which is applied in the direction of keys, building locks, buildings, etc., and can solve the problem of long delay in unlocking
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[0009] figure 1 It is a schematic diagram of the proximity switch door lock system. A permanent magnet 1 is fixed near the lock hole 2 on the door lock, and a groove (not shown in the figure) is provided along the main body of the key, and a Hall proximity switch 3 is embedded in the groove, and fixed at the front of the key handle There are LED lamp beads 4 and a button battery 5 that supplies power to the LED lamp beads. The wires (not shown) connecting the Hall proximity switch 3 to the LED lamp beads and the button battery 5 are arranged along the groove, and are connected to the Hall through the inner surface. The matching fixture (not shown in the figure) on the outer surface of the proximity switch 3 fills up the groove and fixes it.
[0010] When in use, put the key chain close to the door lock. When the distance between the key and the permanent magnet indicated by 1 is reduced to a certain range, the Hall proximity switch 3 is turned on, and the LED lamp bead 4 on t...
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