1. Selection of electricity meters
As a result of the application of electronic technology and microcontroller technology to electricity meters, smart meters can generally be described as electromechanical or fully electronic with microprocessors. Electromechanical borrows the movement of the original induction meter and measures the power consumption of users by reading the turntable rotation through photoelectric sensors, such as magnetic card meters, electric card meters, IC card meters, etc.; fully electronic meters calculate the power consumption of users cumulatively by isolated conversion A/D of voltage and current, multiplying the sampling value. Electromechanical intelligent meters are low cost, mainly used for single-phase meters, and suitable for residential use. The all-electronic meter is mainly used for enterprise three-phase electricity billing. For remote automatic wireless meter reading, smart meters equipped with communication interfaces, such as RS-485, RS-232, CAN bus transceivers, or infrared, should be selected.
2. Communication method
A 4G DTU remote wireless meter reading terminal uses computer networks and communication technology to automatically count the power consumption of each user through a wireless network. It transmits it to a remote monitoring center to automate meter reading. The focus here is on the 4G wireless network transmission method of meter reading.
4G wireless communication is not limited by time and geography. Alotcer 4G DTU wireless meter reading module can remain online for a long time as long as it is used for wireless meter reading. Through the computer, the management center has access to accurate meter data at any time.
The wireless transmission module is equivalent to an intelligent management machine in the 4G industrial DTU wireless transmission module meter reading system.
First, it collects and processes the data of each meter (such as meter count, meter status) and then transmits that data adapter to the central platform according to the requirements of the central platform. Secondly, it stores the address of the meter and sets the relevant parameters of the meter (such as meter constant, meter bottom) according to the command of the central platform. Third, it has the capability of networking, allowing signal connection and data transmission with multiple meters point or point-to-point.