The invention discloses a composite vehicle detection algorithm. The invention belongs to the technical field of Internet of Things and intelligent parking. A controller is included. The detection algorithm is specifically as follows: after a vehicle parks in a parking space, magnetic field change data are continuously collected through a magnetic field sensor, the original magnetic field value isused as a reference, when the magnetic field change values detected by the magnetic field sensor for eight consecutive seconds all exceed a set judgment threshold value, the stabilized magnetic fieldvalue is obtained, meanwhile, the magnetic field data are stored in a cache, and if the magnetic field is continuously unstable, it can be judged that the parking space is in a no-vehicle state. According to the invention, through a composite detection determination mode of a magnetic field and a millimeter wave radar, vehicle access is determined; after magnetic field change judgment, the millimeter wave radar is started to judge whether a vehicle actually exists above a detection point or not, the influence of other magnetic substances on actual vehicle in-out judgment can be avoided, evenif the magnetic substances are close to the parking space, interference information can be filtered out through the radar, and therefore the vehicle in-out detection accuracy is greatly improved.
本发明公开了一种复合型车辆检测算法,属于物联网、智慧停车技术领域,包括控制器,检测算法具体为:车辆停入车位后,通过磁场传感器连续采集磁场变化数据,并以原磁场值为基准,当磁场传感器连续8秒检测到的磁场变化值均超过设定的判断阈值,获取稳定后的磁场值,同时把磁场数据存入缓存,若磁场持续不稳定,此时可判断车位为无车状态。本发明通过“磁场+毫米波雷达”的复合检测判断方式进行车辆进出的判断,经过磁场变化判断后,启用毫米波雷达判断检测点上方是否实际有车辆存在,可避免其它磁性物质对实际车辆进出判断的影响,即使有磁性物质靠近停车位,也可经由雷达过滤掉干扰信息,从而大大地提高车辆进出的检测准确率。
Composite vehicle detection algorithm
一种复合型车辆检测算法
2020-11-06
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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