Nb-iot water meter of Internet of things

Nb-iot remote water meter is a remote water meter developed by our company, which is convenient for remote meter reading and control. Based on the pulse water meter of our company, through the nb-iot narrow-band cellular Internet of things, the automatic remote meter reading of water meter is realized, which effectively avoids the management department's on-site meter reading, and has the valve control function (optional), which is convenient for the management department to control the water consumption of the water meter, making the remote meter reading and control more convenient and reliable, and saving people At the same time, it can effectively improve the production efficiency. It is especially suitable for the installation in the environment where the wiring is difficult and the population is sparse.
Nb-iot remote water meter of Internet of things meets the technical requirements of GB / t778-2007 measurement of water flow in closed full pipe for drinking cold water meter and hot water meter and CJ / t224-2012 electronic remote water meter. The communication protocol follows the protection level IP68 specified in 130 communication protocol specification and gb4208-2008 Standard Specification.
3、 Core functions:
1. Remote reading: periodically and regularly take the initiative to read the report, and up to four reading upload days can be set in a month.
2. Operation level security: two way authentication, strict encryption of air port
3. Easy installation and maintenance: field installation does not require any collector, no wiring, the whole meter adopts mechanical and electrical separation structure, easy maintenance
4. Low power consumption: water meter package for 6-10 years (the specific service life is determined by the sampling frequency).
Functional features:
■ ultra long life battery: the standard er26500m large capacity battery can supply power for 6 ~ 10 years without replacement.
■ built in high gain antenna, stable and reliable signal, full coverage and no blind area.
■ high sampling accuracy: Based on the pulse counting of our tunnel sensor, the reading accuracy is guaranteed.
■ flexible setting of upload frequency: the data upload cycle can be set to meet the management needs of different users.
■ protection grade IP68: protection grade IP68, suitable for various complex environments.
Structure design of replaceable battery: the battery box adopts independent replaceable design without opening the upper cover of the main body, so it is convenient to replace.
■ the system adopts C / S architecture: the system is stable, safe and can support online upgrade.
4、 Technical parameters of electronic part
Project technical standards
Working voltage built-in 3.6V lithium argon standard er26500m battery
Static working current ≤ 15ua
Communication working current ≤ 200mA
The service life of the battery is more than 6-10 years
Protection grade IP68
RF parameter network system: nb-iot
Frequency: 850mhz
Transmitting power: 23dbm
Sensitivity: - 129dbm
The operating conditions and ambient temperature are 0 ℃～ 40 ℃;
The allowable working pressure is equal to 1MPa
5、 Some parameters of base table
15mm 20mm 25mm
3.125m3/h 5m3/h 7.875m3/h
2.5m3/h 4m3/h 6.3m3/h
0.04m3/h 0.064m3/h 0.100m3/h
0.025m3/h 0.04m3/h 0.063m3/h