針對物聯(lián)網(wǎng)技術的發(fā)展現(xiàn)狀和智能燃氣表對低功耗與強連接的需求，提出了一種基于NB-IoT技術的物聯(lián)網(wǎng)智能燃氣表的設計方案。該方案采用瑞薩R7F0C004芯片作為MCU采集燃氣計量數(shù)據(jù)，以N700-58為通信模組實現(xiàn)網(wǎng)絡連接，業(yè)務數(shù)據(jù)經由CoAP協(xié)議封裝后發(fā)送到電信AEP平臺，再由AEP平臺推送到燃氣表業(yè)務管理平臺系統(tǒng)實現(xiàn)數(shù)據(jù)通信。測試結果表明，所設計的燃氣表終端無論是在連網(wǎng)收發(fā)數(shù)據(jù)，還是在低能耗方面都達到了預期的設計目標，能夠很好地滿足應用需求。

Research and design of a gas meter based on NB-IoT

Abstract： Aiming at the development status of Internet of Things technology and the demand of intelligent gas meter for low power consumption and strong connection, this paper proposes a design scheme of intelligent gas meter based on NB-IoT technology. In this scheme, Renesas R7F0C004 chip is used as MCU to collect gas metering data, and N700-58 is used as communication module to realize network connection. The business data is encapsulated by CoAP protocol and sent to AEP platform, and then pushed by AEP platform to gas meter business management platform system to realize data communication. The test results show that the gas meter terminal designed in this paper achieves the expected design goal in terms of network connection, data receiving and sending, and low energy consumption, which can well meet the application requirements.

Key words : NB-IoT；Internet of Things；gas meter；data transmission；low power consumption