Access control device with an efficient distances setting

Abstract

An access control device with an efficient distance setting includes a main system and an active proximity card, and the main system includes a first microprocessor coupled to a first signal receiver, and the first signal receiver has a first receiving sensitivity, and the first microprocessor has a first signal reception intensity setting, and the active proximity card includes a signal transmitter. After the first signal receiver receives a control signal transmitted from the active proximity card, the first signal receiver will transmit the control signal to the first microprocessor. If the intensity of the control signal is greater than or equal to the intensity of the received first signal, the microprocessor will execute the control signal to prevent the main system from processing too many unnecessary control signals or prevent the control signal transmitted from the active proximity card from being executed by many main systems.

Description

technical field [0001] The invention relates to an access control device with an effective distance setting, especially an access control device with a receiving range and an effective distance defined within the receiving range. Background technique [0002] Access control devices use identity verification devices to control or record the entry and exit of people in specific areas. They are widely used in residences, office buildings, parking lots, hotel rooms, and dormitories. Traditional access control devices use hosts to connect to gates, rolling doors or elevators. Doors, etc., when the user wants to go in and out, he presses the remote control to control the host to open or close the door, but this method requires the user to press the remote control, which is quite inconvenient. Proximity card, this kind of active proximity card will continuously send control signals to the host for execution. Therefore, when the user approaches the host, the host will automatically ...

AI Technical Summary

Problems solved by technology

[0002] Access control devices use identity verification devices to control or record the entry and exit of people in specific areas. They are widely used in residences, office buildings, parking lots, hotel rooms, and dormitories. Traditional access control devices use hosts to connect to gates, rolling doors or elevators. Doors, etc., when the user wants to go in and out, he presses the remote control to control the host to open or close the door, but this method requires the user to press the remote control, which is quite inconvenient. Proximity card, this kind of active proximity card will continuously send control signals to the host for execution. Therefore, when the user approaches the host, the host will automatically execute the control signal, which is quite convenient, but generally speaking, a host corresponds to There may be hundreds or even thousands of proximity cards, that is to say, there are often multiple active proximity cards near the host, which causes the host to process too many unnecessary control signals. When the access control is nearby, the active proximity card cannot transmit the control signal to the specific host

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