Selection of wireless module in remote meter reading system
The remote meter reading system uses advanced wireless network data transmission technology to collect in real time the usage status of residential water and electricity, realizes centralized storage and unified management of data, reduces manual labor, greatly improves work efficiency, and helps relevant departments Management, statistics, and analysis of energy usage provide a basis to make management more scientific and efficient.
The remote meter reading system has excellent compatibility and scalability. It can not only realize the management of wireless remote water and electricity meters, but also realize the comprehensive management of various types of smart meters such as water, electricity, gas, and heating meters.
Selection of wireless module:
In the remote meter reading system, the wireless module plays a very important role, including network interconnection and data transmission, and in the remote meter reading system, the environment is often very complicated, and there are many devices in the network. At present, there are many wireless modules on the market. According to the type, there are wifi, bluetooth, zigbee and serial port, etc., according to the frequency band, there are 170M, 315M, 433M, 2.4G and other frequencies. We need to choose the appropriate module to apply to the remote meter reading system.
1. In the remote meter reading system, the power consumption of the module is relatively high. If the power consumption is too high (such as a wifi module), it may cause a waste of power resources, and it is necessary to convert the power supply voltage to realize the wireless module Power supply increases the cost of research and development.
2. Anti-interference is equally important. The remote meter reading system is not only used in industry, but also in every household. Some urban users have a complicated use environment, with dense radios around them, and more walls, which also have certain requirements on the distance of wireless transmission and reception.
3. The network relationship is complex. Since various tables may be located in various scattered places, different network combinations may be formed, and a certain node may disconnect from the network and the network needs to be reconnected due to changes in the environment. In the network, at least one device is required to manage the entire network, store data, and so on. In this case, we need to select the wireless module to be able to network by itself, route by itself, and be able to reconnect after disconnection.
