Vehicle recognition method for smart parking system based on ultrasonic ranging
A technology for parking system and vehicle recognition, which is applied in the field of vehicle recognition in smart parking systems based on ultrasonic ranging, and can solve problems such as low recognition rate and false recognition
Active Publication Date: 2021-05-07
严格普耀重庆信息科技有限公司
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[0004] However, there are certain deficiencies in the application of the existing ultrasonic detection technology for parking spaces: the recognition rate of vehicles in the existing technology is not high, and misidentification often occurs, so there are great controversies in the process of evidence collection and charging
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[0028] The specific implementation manner and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0029] Such as figure 1 As shown, a vehicle recognition method for intelligent parking system based on ultrasonic ranging, the specific steps are as follows:
[0030] Step 1: Continuously send out ultrasonic signals through the ultrasonic generating device, and continuously collect ultrasonic echo signals through the ultrasonic receiving device;
[0031] During implementation, the ultrasonic generating device and the ultrasonic receiving device adopt an existing waterproof ultrasonic module, which uses a waterproof ultrasonic transducer and has strong adaptability to the working environment. The module is equipped with a special bell mouth to meet the requirements of a larger detection range.
[0032] Step 2: Based on the ultrasonic signal and ultrasonic echo signal, calculate the current measureme...
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The invention discloses a vehicle identification method for a smart parking system based on ultrasonic distance measurement, comprising the steps of continuously sending out ultrasonic signals through an ultrasonic generating device, and continuously collecting ultrasonic echo signals through an ultrasonic receiving device; based on the ultrasonic signals and the ultrasonic echo signals, , and calculate the current measurement distance in real time; filter the calculated distance data; judge whether the parking space is in the state of having a car or without a car according to the characteristic data of the car and the characteristic data of the car; send the current state of the parking space to the parking lot billing platform. Its remarkable effect is that the recognition rate of vehicle entry and exit is greatly improved, and it provides a reliable technical guarantee for the implementation of the unattended intelligent parking system.
Description
technical field [0001] The invention relates to the technical field of intelligent parking, in particular to a vehicle identification method for an intelligent parking system based on ultrasonic ranging. Background technique [0002] In many large and medium-sized cities in my country, the problem of difficult parking is becoming increasingly prominent, and finding a suitable parking space is a miserable thing for many drivers. Parking space resources are always limited. Only by obtaining the parking space status of many parking garages efficiently and in real time can the difficulty of parking be alleviated. Therefore, effective monitoring and management of parking spaces is an effective means to improve the efficiency of urban parking spaces. [0003] At present, there are generally the following methods for the monitoring and management of parking spaces: manual collection, automatic measurement of garage entrances, and ultrasonic detection technology. The manual collect...
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IPC IPC(8): G08G1/14G08G1/04G01S15/08
CPCG01S15/08G08G1/04G08G1/142
Inventor 杨春何宇波
Owner 严格普耀重庆信息科技有限公司