NB IoT ultrasonic gas meter is a fully electronic gas measuring instrument with prepayment function, which adopts ultrasonic measurement technology, installs electronic controller and NB communication module.

Technical route:

Deep cooperation with top international ultrasonic chip manufacturer AMS, integrating core metrology algorithm firmware with independent intellectual property rights into the chip.

Based on the characteristics of gas metering, significantly optimize the firmware strategy of ultrasonic metering chips to form a "unique, adaptive, high sampling rate, high precision, and low power consumption" metering solution.

Jointly released the "iESlab&ams" brand ultrasonic gas metering module with AMS.

Based on the characteristics of ultrasonic measurement, a matching calibration table has been developed to achieve high-speed modeling and efficient calibration/verification.

Research on physical mechanisms such as electronics, materials, acoustics, and fluid mechanics to ensure the correctness of theoretical foundations.

Key technologies:

The firmware algorithm of the measuring chip has been independently designed to achieve signal propagation adaptation (adaptive excitation frequency, PGA automatic adjustment, adaptive gas quality, temperature, pressure changes).

◆ Independently developed and manufactured gas medium transducers, achieving good acoustic matching, low voltage excitation, and low power consumption.

Simulation and optimization design of sound and flow channels.

Progressiveness technology:

Main functions:

◆ Adopting the time difference method for ultrasonic measurement

◆ Use a dedicated IoT network card to communicate data through NB IoT (Narrowband Internet of Things).

◆ It has three working modes: timed upload, manual upload, and abnormal event upload, and the upload has a staggered mechanism.

◆ It can configure parameters online and has a local infrared communication interface.

◆ It has a prepaid function and can realize remote recharge and payment.

◆ Equipped with abnormal alarm management functions, including gas abnormal alarm, electricity abnormal alarm, and communication abnormal alarm.

◆ It adopts a power supply method of external 4-cell No. 5 alkaline battery and internal lithium battery.

The meter can display information such as temperature, pressure, gas volume, remaining amount, gas unit price, valve status, battery power, etc;

◆ The gas meter hardware program can be updated remotely online.