IoT Network water meter

IoT water meter-Network water meter
 
Overview
NB-IoT Internet of Things water meter with high security, reliable network, deep coverage, multiple connections, low power consumption, low cost can better solve the problems of traditional water meters and smart water meters, and can better meet the development needs of the water industry. With the widespread application of new technologies such as the Internet of Things and cloud computing, smart water services based on NB-IoT technology will become one of the signs of the level of informatization of smart city management. The NB-IoT module adopts high-performance and low-power NB-IoT cellular narrowband network technology, with deep coverage of its signal network (subsurface wells, pipeline wells, etc. can be used normally), ultra-low power consumption, stable and reliable communication, and authorization Narrowband 4G network transmission without building base stations
1. With flow metering and voltage detection functions.
2. The module integrates real-time clock function with high timing accuracy. The clock can be remotely calibrated through the remote host computer software system.
3. The NB IoT water meter can carry data remotely through NB-IoT technology. When there is no data communication, the NB IoT water meter automatically enters a low power consumption state to reduce power consumption.
4. The NB IoT water meter supports automatic valve control and system remote valve control, which can realize related management functions such as prepayment, and provide a variety of options for the water department's charging mode.
5. The NB IoT water meter currently supports fixed-point upload and periodic upload modes, and the upload can be triggered manually when debugging or uploading is required

 
technical parameter
 
Working voltage: DC2.7V-3.6V
   Quiescent current: ≤8uA
   Sending current: ≤130mA
   Transmitting power: 23dBm±2dB
   Communication method: NB-IOT
   Drive valve current: 200mA
   Working environment: 0℃-55℃
   Humidity: ≤95%RH

NB-IoT Internet of Things has four major characteristics:
1. Wide coverage: Provide improved indoor coverage. In the same frequency band, NB-IoT has a gain of 20dB over the existing network, which is equivalent to an increase
100 times the coverage area capacity;
2. Ability to support massive connections: One sector of NB-IoT can support 100,000 connections, and supports low latency sensitivity and ultra-low
Equipment cost, low equipment power consumption and optimized network architecture;
3. Lower power consumption: the standby time of the NB-IoT terminal module can be as long as 10 years;
4. Lower module cost: The company expects that a single connected module does not exceed $5.
NB-IOT focuses on the Low Power Consumption Wide Coverage (LPWA) Internet of Things (IOT) market, and is an emerging market that can be widely used worldwide
technology. It has the characteristics of wide coverage, multiple connections, low speed, low cost, low power consumption, and excellent architecture. NB-IOT uses the license frequency band,
Three deployment methods, in-band, guard-band or independent carrier, can be adopted to coexist with existing networks.

There are three ways to install remote water meters:
1. Wired connection method:
This connection method requires the installation of water meter wiring. It can also be wired in the duct well of a newly built building, or the water meter can be wired outdoors; but it is not very suitable for wiring in the user’s home. It needs to penetrate the wall to make holes and destroy the decoration of the user’s home. Laborious. Routine maintenance is also very troublesome. There are transmission line problems, power failure of collection equipment, low meter reading rate and difficult maintenance.
2. The wireless way of using acquisition equipment:
This connection method requires the use of collection equipment, and the user must deploy and maintain the collection equipment. The water meter communicates with the collection equipment by wireless means, and the user must install and maintain the collection equipment. It is often necessary to maintain the collection equipment and optimize the blind spots of the network, which requires quite high technology to maintain.
3. NB Internet of Things:
The NB Internet of Things method does not need to install collection equipment by yourself, and directly uses the NB base station network of the telecom operator. It is possible to omit the original very complicated wiring or equipment erection of remote water meters, and install and use NB IoT water meters directly like mechanical water meters in the past.
It can greatly reduce the difficulty of maintaining smart water meters by the water company and reduce the corresponding labor costs, which is conducive to the large-scale promotion of NB IoT water meters.

 

Parameters:

Item    Parameters    Remarks
Working voltage      2.8~ 3.6 V     Recommend ER26500+SPC1520 3.6V battery capacitor bank
Combine
 Working temperature      -20 ~ 75 ℃    
 Working humidity     10%-90% relative humidity, non-condensing    
 Working frequency band     B5, B8      NB-IoT network, cellular-based narrowband IoT
 Transmit power      <23.5dBm    
 Receiving sensitivity      -129±2dBm    
 Quiescent current      <10uA    
 Emission current      <130mA    
 Receive current      <100mA    
 Wake-up time     Timing wake up     Timing time can be set