Parking lot access control system based on separated infrared transceiving and control method

Abstract

The invention provides a parking lot access control system based on separated infrared transceiving and a control method. The system comprises an OBU device installed on a vehicle, and an RSU device mounted on a gate of a parking lot; the OBU device comprises a first infrared receiving module and a first infrared transmitting module which are independently arranged on the outer surface of the OBUdevice; the first infrared receiving module is arranged below the first infrared transmitting module; the RSU device is mounted on the gate of the parking lot and comprises a second infrared receivingmodule arranged at the top of the gate and a second infrared transmitting module arranged at the bottom of the gate; transmitting heads of the first infrared transmitting module and the second infrared transmitting module are arranged towards an inclined upper direction; and receiving heads of the first infrared receiving module and the second infrared receiving module are arranged towards an inclined lower direction. The system is low in cost, can reduce the interference of sunlight on the infrared receiving module of the on-board unit, and can also effectively improve the problem of signalinterference of two adjacent vehicles. Therefore, the identification rate of the system is improved, and the system is suitable for parking lot management of communities.

Description

technical field [0001] The invention belongs to the technical field of electronic circuits, and in particular relates to a parking lot access control system and a control method based on separate infrared transceivers. Background technique [0002] The existing parking lot access control system supports the following control methods. The first one is that when the car owner drives to the entrance and exit of the parking lot, the RFID induction card is manually swiped to control the lifting of the gate. This method has many inconveniences. The second is that the parking lot adopts the license plate image recognition method to control the entry and exit of vehicles, which improves the inconvenience of RFID inductive card swiping. However, because image recognition is easily affected by many environmental factors, such as license plate stains, ambient brightness, and camera angles, etc., the recognition rate is not 100%, and its system cost is too high. relatively reduced. T...

AI Technical Summary

Problems solved by technology

However, because image recognition is easily affected by many environmental factors, such as license plate stains, ambient brightness, and camera angles, etc., the recognition rate is not 100%, and its system cost is too high. relative reduction

The third is to use the ETC system for control. This system uses passive E-tag induction recognition technology. The vehicle only needs to affix the E-tag and does not need to be installed on the vehicle. However, if this method is applied to the access control of the parking lot in the community, its The sensing range is bound to be small. When the vehicle approaches the entrance and exit of the parking lot, it still needs to pause and wait for the gate to open.

Since the identification signals are transmitted back at the same time, these signals will interfere with each other in the air at this time, causing the lane system to fail to correctly judge its identification signals

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