(source: qianjia.com)Intelligent parking is a practical Internet of things application, which can significantly improve everyone's life. Imagine you arrive at your destination 20 minutes in advance for a very important meeting. As long as you can find a parking space in advance, you can save a lot of time.If the parking lot of the building is full. You have to look around for space in the street, but you can't find a suitable parking space. You can try to enter the underground parking lot of the building across the street. When you drive in, you may have to stop first and tell the participants that you may be late, and there is no cell phone signal in the underground parking lot.

It may take half an hour to find a parking space. When you finally arrive at the office for the meeting, you are sweating and panting. Maybe the receptionist will tell you that everyone has left. Your meeting has been cancelled and you must bear serious losses. Of course, you're not alone. According to the survey, in the United States, the average driver wastes $345 a year, causing more than $70 billion in losses nationwide every year.In addition, 40% of the drivers surveyed said they chose not to go to physical stores because they could not find parking spaces. Recent studies predict that 68% of the world's population will live in major cities by 2050. This may have a direct impact on the way car owners Park in the city. So, what can be done to improve the parking situation in the city?The combination of innovative intelligent parking technology and IOT connection can help solve this problem. The installed IOT sensor can determine the location of empty parking spaces. IOT data is transmitted to the ECS through a wireless connection. All data in the parking lot will be collected and analyzed in real time to generate an available space map for people looking for space.

Drivers looking for parking spaces can refer to the real-time intelligent parking map and be guided to the nearest free space. Advanced systems can retain these spaces and collect electronic payments from drivers. In the case study of intelligent parking solution development of Internet of things, the technical components include ultrasonic sensor hc-sr04 and esp8266 microcontroller that use ultrasonic to measure physical distance. Both are installed in each parking space.IOT devices use mqtt protocol to send periodic updates to ECS running AWS IOT services through wireless signals. ECS data about all parking spaces, which displays the available parking spaces to users through the network or mobile application and lets them select one. IOT sensors use ultrasound to detect the distance of objects. Each sensor is embedded in the parking space surface and detects the distance of the vehicle chassis when the parking space is occupied.If the situation is "dirty", the sensor may be covered or blocked, and the equipment needs to be checked. The application runs on AWS IOT and AWS lambda and displays the available space of the driver in green, the occupied space in red, and the sensor fault in yellow. The number of parking spaces in the parking lot determines the software and hardware requirements of IOT configuration and system architecture. For large parking lots, it is best to use gateway and lpwan protocol for sensors.

The adoption of lorawan standard is one of the current trends of the Internet of things, and it is also a method to increase the running time of autonomous systems by reducing power consumption. According to the specifications of the Lora alliance, this reduces the need to replace the battery. The battery life can be extended to five years before replacement. The deployment of intelligent parking system is expected to continue to increase because the technology is very useful and can improve daily life. The following advanced features can be added to the intelligent parking system to transform it into a highly versatile management tool.

For large parking lots, augmented reality technology can create mapping functions on the real images captured by smart phones. These ar based outdoor and indoor navigation systems can guide the driver to the parked car through a virtual path. Another innovation is to use visual image processing to capture the license plate number of the vehicle and recognize it with the help of optical character recognition technology. Then, it will automatically open the door to the parking lot, and the system will guide the driver to the appropriate parking space.