Monitoring device of water meter

A monitoring device of water meter, comprising:

• a body for being mounted on a water meter;
• a sensor disposed in the body and used for sensing rotation times of a metal sheet of the water meter so as to indirectly obtain the rotation times of a pointer of the water meter to further obtain a pointer rotation times information;
• a camera module disposed in the body and used for capturing an image of a number display wheel of the water meter so as to obtain a reading image information;
• a communication module disposed in the body and used for connecting with a communication module of another monitoring device of water meter and/or a server;
• and
• a microcontroller unit disposed in the body and electrically connected with the sensor, the camera module and the communication module, the sensor transmitting the pointer rotation times information to the microcontroller unit, the camera module transmitting the reading image information to the microcontroller unit, the microcontroller unit transmitting the received pointer rotation times information and the reading image information to the communication module, the communication module transmitting the received pointer rotation times information containing an identifier and the reading image information to the communication module of another monitoring device of water meter and/or the server, the server comprising a water meter data management unit and an image identifying unit, the water meter data management unit calculating degree of water consumption in accordance with the pointer rotation times information, the image identifying unit calculating water consumption in accordance with the reading image information, and the server selecting at least one of the pointer rotation times information and the reading image information as a basis for calculating degree of water consumption for each water meter.