Image recognition: Image recognition is the core technology of camera direct reading meters, which has mature applications in road speed measurement and other fields. Due to the continuous rotation of the counter of the measuring instrument, the number of each character wheel will be displayed as between 1% and 100% of the full character, which provides higher requirements for recognition. After years of technological breakthroughs, full dynamic digital recognition has been achieved with an accuracy rate of 99.9%.

NB IoT communication: Based on public telecommunications networks such as China Mobile, China Telecom, and China Unicom, using dedicated IoT segment cards, data communication is conducted through NB IoT (Narrowband IoT). During the data upload process, dynamic encryption is used to ensure the security of communication data, and wireless parameter settings and remote monitoring of gas meters can be performed.

Data Security: Channel Security and Data Security. Network and transmission encryption technology; Network registration and authentication, dynamic encryption algorithm for data transmission, supporting TLS/DTLS+security protocols to ensure secure data information transmission. Table side data protection and security. Event recording and reporting (recording and reporting of abnormal events such as low power, meter dismantling, etc., for easy query and analysis.)

● No disassembly and replacement: It has the characteristics of easy use, strong scalability, and strong applicability; No need to replace the base meter (error detection qualified, can continue to be used), simply install the camera module, and the base meter can be upgraded to an IoT gas meter.

Reserved interface communication/valve: In addition to NB IoT communication, infrared/Bluetooth communication ports are reserved for personnel to perform simple operations on site (switching valves, recharging, parameter modification, etc.) in case of network abnormalities (weak signal or inability to cover). Valve control can be added according to the needs of different customers. (Remote valve opening, remote valve closing, abnormal alarm valve closing, etc.).