The prepaid water meter is an intelligent water meter, and its internal composition and working principle are somewhat different from the traditional water meter. The following is a detailed introduction to the internal structure and working principle of the prepaid water meter.
First of all, the internal structure of the prepaid water meter can be divided into the following main parts: metering device, display device, billing device and communication device.
The metering device is the core part of the prepaid water meter, which determines the amount of water used by the user by measuring the flow of water. A metering device usually consists of a flow meter and a speed sensor. A flow meter is used to measure the flow of water, while a speed sensor is used to detect the rotational speed of a flow meter. By measuring the rotational speed of the flow meter, the user's water consumption can be calculated.
The display device is used to display information such as the user's water consumption and remaining water volume. Typically, the display unit is an LCD display that clearly shows the user's water consumption and remaining water. The user can query and operate the display via the touch screen or buttons.
The billing device is used to calculate and deduct water bills. It usually consists of a microprocessor and associated circuitry. When a user purchases water, the purchased water information is stored in the billing device. When a user uses water, the billing device will deduct the fee based on the user's water consumption and update the user's remaining water information.
The communication device is used to communicate with the water utility company and realize the remote management and monitoring of prepaid water meters. A communication device usually consists of a wireless module and a data transmission interface. Through the wireless module, the prepaid water meter can communicate with the water company's management system to realize the transmission and management of water information.
The working principle of the prepaid water meter is as follows: when the user buys the amount of water, the user enters the information of the purchased water quantity into the billing device of the prepaid water meter. The billing device stores the purchased water quantity information and updates the user's remaining water quantity information. When the user uses water, the water flows through the metering device of the prepaid water meter, which measures the water flow and transmits the measurement results to the billing device. The billing device deducts the user's water consumption according to the user's water consumption and updates the user's remaining water information. When the user's remaining water is close to zero, the prepaid water meter will remind the user through the display device to remind the user that more water needs to be purchased.
In short, the prepaid water meter is an intelligent water meter, and its internal structure and working principle are different from the traditional water meter. Through the cooperation of metering devices, display devices, billing devices and communication devices, prepaid water meters can realize the measurement of water consumption, the calculation and deduction of water charges, and can be remotely managed and monitored with the water company. This intelligent water meter provides users with more convenient and reliable water service.