Views:1 Author:Site Editor Publish Time: 2020-07-29 Origin:Site
Lora water meter adopt Lora system. Lora is a kind of lpwan communication technology. It is a kind of ultra long distance wireless transmission scheme based on spread spectrum technology adopted and promoted by Semtech company of the United States. This scheme changes the previous trade off between transmission distance and power consumption, and provides users with a simple system that can realize long-distance, long battery life and large capacity, and then expand the sensor network. At present, Lora water meter mainly operates in the global free frequency band, including 433, 470, 868, 915MHz, etc.
The above three pictures are from Lora module.Lora module is an ultra long distance wireless transmission scheme based on spread spectrum technology. This scheme changes the previous tradeoff between transmission distance and power consumption, and provides users with a simple system that can realize long-distance, long battery life and large capacity, and then expand the sensor network. Lora technology has the characteristics of long distance, low power consumption, multi node and low cost. The network based on lorawan can provide secure data transmission, long-distance two-way communication, and cover urban areas with the least network infrastructure. Lora technology will be widely used in various application scenarios such as smart agriculture, intelligent building, intelligent logistics, etc.
This paper designs a wireless water meter reading system based on Lora communication, which has high accuracy, wide adaptability and practicability. According to the different functions of each equipment, the wireless water meter reading system can be divided into three parts: water meter, repeater and concentrator. The main function of water meter is forward flow statistics, reverse flow statistics, magnetic interference detection, emergency valve closing and wireless data transmission; the main function of the repeater is to transmit and receive signals from remote water meters; The main function of the concentrator is to receive the instruction from the workstation, manage the water meter, collect and upload the data.