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The principle of the controller
Apr 21, 2017

Electromagnetic sucker controller: AC voltage 380V after the transformer step-down, after rectifier rectifier into 110V DC after the control device into the suction sucker at this time is charged magnetic, demagnetization when the reverse voltage circuit, the controller to achieve demagnetization function. Access controller: Access control controller works under two modes. One is the patrol mode, the other is the identification mode. In patrol mode, the controller continually sends the query code to the reader and receives the reply command of the reader. This pattern will remain until the card reader is sensing. When the card reader induction, the card reader to the controller's patrol order to produce a different response, in this reply, the reader will read the induction card code data transmission to access control controller, access control controller into the identification mode. In the identification mode of the entrance control controller, the entrance control controller analyzes the induction card inside code, compared with the card data stored in the device, and implements the follow-up action. Access Controller completes the receipt of the data, will send a command card reader, card reader recovery status, at the same time, access controller back to patrol mode.