The HAC-WE8 low-power wireless NB centralized acquisition control system adopts a two-level star network topology of LPWAN+LPLAN. The system has low cost, low power consumption and high reliability.

system introduction

System composition: HAC-WE8 low-power wireless meter reading module, HAC-GWE-P2 low-power wireless NB collector, HAC-RHU-W handheld, HAC-WE8 meter reading application platform.

· The HAC-WE8 low-power wireless meter reading module actively sends meter data once a day, and can be woken up by the wireless NB collector and RHU handheld in real time for valve control, point reading and setting.

· The HAC-GWE-P2 low-power wireless NB collector uses a one-time lithium battery, and does not require solar energy and external power supply. It is small in size, easy to install, simple to maintain, easy to expand, and flexible to deploy. -20°C.

· HAC-RHU-W handheld is used to supplement meter reading, parameter setting of field meter terminal and collector.

· HAC-WE8 meter reading application platform can be deployed in the cloud, and the application platform has rich functions. Provide dynamic data link library to facilitate customer development.

Key technology

The system adopts HAC's own RF chip and HAC international patented wake-up method, which can realize two-way mutual wake-up between the meter and the collector. The wireless collector can accurately wake up the specified wireless terminal and read the meter and control the valve in real time. When the meter terminal actively reports the number of uplinks every day, it will wake up the collector wirelessly to ensure that the collector usually works in a low power consumption state. The collector regularly sends uplink heartbeat packets and receives platform data commands to achieve relatively real-time NB-IoT communication. The chip's proprietary coding algorithm ensures the safety and reliability of the system.

Features

1) The sending period can be configured, and the data is actively sent once every 24 hours by default.

2) Configurable wireless channel groups, support automatic switching of reporting channels, and effectively avoid channel interference.

3) It integrates functions such as metering, valve control, wireless communication, soft clock, ultra-low power consumption, power management, and magnetic attack alarm.

  　· Support single and double pulse measurement (Hall, reed switch), non-magnetic, etc. Direct reading measurement can also be purchased, and the measurement method is fixed before leaving the factory.

  　· Power management function, detect the transmission status or control valve voltage and report it.

  　· Magnetic attack detection function, which generates an alarm sign when detecting malicious magnetic attacks.

  　· Support power-off storage function, after the module is powered off, it does not need to re-initialize the metering value.

  　· Support valve control, the valve can be controlled in real time by using a handheld computer or by the platform through the collector.

  　· Module parameters can be set by handheld or meter reading system.

4) Use magnets to trigger reporting data or automatically report data on the meter side.

5) The line-of-sight communication distance between the meter reading module and the collector can reach more than 1000 meters.

5) Standard spring antenna, flexible circuit board antenna or other metal antenna can also be customized according to user products.

6) Optional Lithium ER18505 capacity battery + Farad capacitor, the service life can reach more than 10 years, customized waterproof connector.

System topology