Method for sharing magnetic field transmitting antenna and parking lot system ground induction coil

Abstract

The invention discloses a method for sharing a magnetic field transmitting antenna and a parking lot system ground induction coil, including magnetic field emitting antenna, a commutation circuit, a remote sensing key and a remote sensing controller. In a normal state, a coil of the magnetic field emitting antenna is a parking lot system ground induction coil; when the parking lot system ground induction coil induces a metal foreign mater, the parking lot system ground induction coil sends an induction signal to the remote sensing controller, the remote sensing controller drives the commutation circuit to commutate the parking lot system ground induction coil into the coil of the magnetic field emitting antenna, the magnetic field emitting antenna emits a magnetic field signal, the magnetic field signal awakens the remote sensing key, the remote sensing key emits a radio frequency coding signal to the remote sensing controller, and the remote sensing controller analyzes and processes the radio frequency coding signal and then executes a corresponding action. According to the method, the coil of the magnetic field emitting antenna and a ground induction coil of an original parking lot management system are shared, the coil of the magnetic field emitting antenna is connected with the commutation circuit; time-sharing work is realized under the action of the commutation circuit, and non-interference is realized.

Description

technical field [0001] The invention relates to the field of parking lot management systems, in particular to a method for sharing a magnetic field transmitting antenna with a ground induction coil of a parking lot system. Background technique [0002] At present, the RFID system is composed of an RFID reading head (sensing) added to the parking lot management proximity sensing system, such as a Bluetooth reading head, an infrared reading head, and a microwave reading head. These reading heads more or less exist Some deficiencies, such as the difficulty of controlling the communication distance, being easily affected by external factors and limited use conditions, etc., result in unstable performance of the system. Contents of the invention [0003] The object of the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a method with simple structure, stable performance and low cost, which is suitable for sharing the magnetic field...

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Problems solved by technology

[0002] At present, the RFID system is composed of an RFID reading head (sensing) added to the parking lot management proximity sensing system, such as a Bluetooth reading head, an infrared reading head, and a microwave reading head. These reading heads more or less exist Some shortcomings, such as difficult to control the communication distance, easily affected by external factors and limited use conditions, etc., resulting in unstable performance of the system

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