Device for detecting parking space in parking lot and detection method

Abstract

The invention belongs to the field of measurement and detection, and particularly relates to a device for detecting a parking space in a parking lot and a detection method. The device for detecting the parking space in the parking lot is arranged below the ground of the parking space and comprises a geomagnetism detection device, a microwave distance measuring device, a data processing module and a data transmitting module, wherein the geomagnetism detection module and the microwave distance measuring device are connected with the data processing module, the data processing module is connected with the data transmitting module, and the data transmitting module is in wired or wireless communication connection with a parking lot background management system. According to the invention, the parking space state is measured by using the detection device combining geomagnetism detection with low power consumption and microwave detection with high accuracy and the detection method, thereby realizing detection for the parking space with low power consumption and high accuracy.

Description

technical field [0001] The invention belongs to the field of measurement and detection, and in particular relates to a detection device and a detection method for a parking space in a parking lot. Background technique [0002] At present, the parking space detection device in the parking lot generally adopts a geomagnetic detection method or a combination of sound waves, infrared, pyroelectric and other methods. The method of geomagnetic detection belongs to the indirect measurement of the disturbance of the vehicle to the geomagnetic field. Its advantage is low power consumption. However, due to the inconsistency of the disturbance of the vehicle to the geomagnetic field, it cannot distinguish whether there is a parking space or not. Factors such as the iron content of the vehicle, the age of the vehicle and other factors lead to inconsistencies in the values ​​measured at the same location of the same type. At the same time, the geomagnetic detection method also involves ...

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Problems solved by technology

At the same time, the geomagnetic detection method also involves the environmental magnetic field. Ideally, the environmental magnetic field is constant, but in reality, due to the difference in underground pipelines, flowing water, and wires, the reference value of the environmental magnetic field will also change accordingly.

Therefore, a single geomagnetic measurement method cannot well meet the practical application.

The detection method of geomagnetism plus acoustic wave is limited by the fact that the sound cannot penetrate the medium. Similarly, the detection methods of geomagnetism plus infrared and geomagnetic heating and discharge are respectively limited by the vehicle shell and low temperature, and neither can obtain good detection results, which makes the parking space detection accuracy rate not tall

[0003] Microwave measurement methods such as microwave ranging and microwave Doppler are direct measurement methods with high accuracy, but due to their high power consumption, if they are only used for vehicle parking space detection, there is a problem of high cost

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