When it comes to construction sites, the first thing that reminds us is "dust flying all over the sky, dusty workers, building materials piled up in a disorderly manner and construction site equipment..." Under these apparent scenes, the actual construction site It is a cumbersome and rigorous system engineering. There are many details about materials, personnel, laws and regulations, environmental protection and so on. The size of traditional construction site projects relies on manual management, not to mention how much personnel costs are required. The errors in manual statistics alone will bring huge losses to the cost.

CAN is called "ControllerAreaNetwork", short for CAN, it is one of the most widely used fieldbus in the world. In the current automobile industry, a variety of electronic control systems have been developed to meet the requirements of safety, comfort, convenience, low pollution and low cost.

LoRa is an ultra-long-distance wireless transmission scheme based on spread spectrum technology adopted and promoted by Semtech. This solution is no longer limited by the compromise between power consumption and transmission distance, and provides users with a system that can achieve long distance, long battery life, and multiple nodes, and then expand into a network.

LoRa technology occupies an important position in the development of the Internet of Things. Because of its ease of construction and deployment, it has become a commonly used Internet of Things dedicated network communication technology. In recent years, due to the maturity of LoRa technology in the leading position, as well as the characteristics of long transmission distance, low power consumption and strong anti-interference, LoRa modules are widely used.