Examples of LoRa applicable scenarios: Smart meter reading: The owner has high requirements for the collection frequency and needs to do data analysis, and has high requirements for network availability;

LoRa is a low-power long-distance wireless communication technology, mainly for applications such as the Internet of Things or M2M, and is an important wireless technology for low-power wide area networks (LPWAN).

RS-485/Modbus is a popular way of network layout, which is characterized by simple and convenient implementation. The RS485 conversion interface is relatively cheap and has a wide variety of types.

The gateway can be a router, a switch or a PC. To communicate within the same network segment, there is no need to intervene the gateway. Only when the host is communicating with a device other than this network segment, it is necessary to send all data packets to the gateway device, and then forward through the gateway device or There are routing processing and so on.

Industrial-grade 4G router has high stability when transmitting and receiving data is one of its main advantages. It uses high-performance industrial-grade wireless modules and industrial-grade high-stability and high-precision components, which can make it resistant to harsh outdoor environments without interruption or loss of data transmission.

IoT gateways will also become an important link for connectivity. As a gateway device, in addition to being responsible for the protocol conversion between different types of perception networks, the IoT gateway can integrate the information collected by different things and transmit it to the next level, so that the information can be Transmission between the various parts. The IoT gateway can re···

The Modbus protocol includes ASCII, RTU, TCP, etc., and does not specify the physical layer. This protocol defines the message structure that the controller can recognize and use, regardless of what kind of network they communicate through. The standard Modicon controller uses RS232C to implement serial Modbus.

The wireless communication module enables all kinds of Internet of Things terminal devices to have the ability to transmit information on the Internet, and is the information portal for all kinds of intelligent terminals to access the Internet of Things. At present, in the M2M scenario, more cellular communication modules (2G/3G/4G) are used. In the future, LPWAN modules (NB/IoT, LoRa) will be rap···

After the 4G network card receives the 4G signal, the 4G wireless router converts the signal into a WLAN signal that can be received by the notebook wirelessly. At the same time, it can also be connected to the computer through the LAN port of the 4G router with a network cable, so that it can be realized by using the router function Multi-machine sharing 4G Internet access.

There are many ways to maintain industrial-grade 4G routers. The key also needs to be determined according to the actual use situation. Each user does not need to deliberately maintain it. They only need to choose the target Simple maintenance methods are sufficient, and timely adjustment and maintenance techniques are designed to prolong the service life of the router.