Parking space detecting method and device

Abstract

The invention provides a parking space car-free calibration value determining device, a system for detecting the existence of a car in a parking space, and a corresponding method. The device comprises a first screening module, a second screening module and a calibration value determining module. The first screening module comprises the following functions of: capturing data with a differential value of adjacent previous data and next data more than a jumping threshold in magnetic field value data sequentially collected from one data collection time range by a magnetic sensor located in the parking space; when a differential value of the first data and the adjacent next data in the time range is more than the jumping threshold, capturing the first data; when a differential value of the last data and the adjacent previous data in the time range is more than the jumping threshold, capturing the last data. The second screening module comprises the following functions of: ordering the captured data according to the size; grouping the ordered data according to a calibration value variation threshold; and screening out a group with the most data. The calibration value determining module is used for averaging all the screened data and rounding down, so as to obtain a parking space car-free calibration value. With the adoption of the scheme, whether the car exists in the parking space can be more accurately determined.

Description

technical field [0001] The invention relates to a parking space detection technology, in particular to a parking space detection method and a detection device. Background technique [0002] As the use of vehicles increases year by year, the scheduling of vehicles in the parking lot is becoming more and more important, and the scheduling of vehicles depends on the detection of whether there is a car in the parking space. Newly driven vehicles are transferred into this parking space, otherwise it will bring a lot of inconvenience to the dispatch of vehicles. [0003] At present, for the detection of whether there is a car in the parking space, a combination of sensors and detectors is usually used. The sensor is placed at the parking space, the detector is located below the parking space, the sensor is connected to the detector, and a fixed parking space without cars is set in the detector. The calibration value and a fixed difference calibration value, the calibration value ...

AI Technical Summary

Problems solved by technology

However, because the calibration value of the parking space without a car is fixed, it cannot follow the magnetic field changes of the surrounding environment well, so the detection results obtained by the above method are not accurate enough, which will bring a lot of inconvenience to the scheduling of vehicles.

Images