In recent years, national policies have clearly proposed to vigorously promote the application of high-tech applications such as smart parking systems and automatic license plate recognition.
"The purpose of smart parking is to make it easier for car owners to find parking spaces, including both offline and online wisdom." Online wisdom is embodied by car owners using mobile apps and WeChat Alipay to obtain parking spaces and parking spaces at designated locations. , Charging standards, availability, charging, sharing and other services, and realize the functions of pre-payment and online checkout.
Offline intelligence is embodied in allowing parking people to better park in parking spaces. The first is to pass quickly to avoid the problems that the parking lot was managed by people in the past, the charges were not transparent, and the time-consuming entering and exiting the parking lot. The second is to provide special parking spaces, such as large car parking spaces, novice driver parking spaces, charging pile parking spaces and other diversified and personalized consumer upgrade services. The third is to park more cars in the same space. For example, he said that a three-dimensional parking garage can expand the number of parking in a unit space; shared parking can solve the problem of parking vehicles in time periods.
Smart parking is divided into city level, warehouse level and parking space level.
City-level parking equipment data is uploaded to the city platform through the Internet of Things, and the government’s city-level cloud platform is connected to the parking company’s cloud platform online to obtain parking lot data, forming a “one network” pattern of parking throughout the city. Online public welfare services make it easy for the public to find parking spaces, and can also solve the problem of "escaping orders" for some parking users.
The NB-IoT technology and LoRa technology that emerged this year are the technologies used in city-level smart parking. NB-IoT technology uses the advantages of low power consumption, wide coverage, and high density of narrowband communication to connect parking equipment directly. Geomagnetism, ground locks, charging piles, and barriers can continuously transmit information to the network platform. Huawei cooperates with a number of communication operators in R&D and promotion. LoRa technology has formed industry standards and a common platform in recent years, which can connect communities to form a large network.
City-level-parking-level application scenarios include parking lots, parking garages, and roadside parking. The most important technologies are license plate recognition technology and electronic toll collection (ETC) technology. Use the camera to shoot the license plate or ETC to accurately identify the identity of the vehicle, record the time of entry and exit of the vehicle to accurately charge the fee, and make the vehicle pass quickly without having to stop for manual recording. It is worth mentioning that ETC technology is an important technology that has been rapidly developed in the field of smart parking barriers in recent years. However, in recent years, the core technology of the star-rated "vertical circulation" three-dimensional parking garage is still a mechanical technology, and the intelligent control still uses traditional PLC control.
Parking space level-parking space level has three technologies, video pile technology, geomagnetic technology and smart parking lock technology. Video stub technology, namely video recognition technology. Geomagnetism technology uses wireless sensor technology to recognize the earth's magnetic field and start charging once a vehicle is detected to enter. The third type is the smart parking lock technology. The “Ding Ding Parking” founded by the Olympic Games uses this technology to control the lifting of the car lock through Bluetooth technology. The car lock is raised and the vehicle cannot enter the parking space. The car lock is lowered and the corresponding vehicle enters. .
Sometimes it is indoor or semi-outdoor, so it needs to work normally at a low temperature of at least -20 or a high temperature of 60 degrees to meet the use of more than 80% of the world;
Unattended, 365 days * 24H running all-weather, and running in a closed chassis, the stability requirements of the industrial computer are relatively high.
The performance is relatively minor. Basically, it can process some simple data. The lower computer has PLC operation control.
