HAC-ML LoRa Low Power Consumption wireless AMR system (hereafter called HAC-ML system) combines data collection, metering, two-way communication, meter reading and valve control as one system. The features of HAC-ML are shown as follow: Long Range Transmission, Low Power Consumption, Small Size, High Reliability, Easy Expansion, Simple Maintenance and High Successful rate for meter reading. By using TDMA communication mode, HAC-ML system can synchronize the communication time unit automatically. By using frequency hopping technology, HAC-ML system can avoid Co-channel interference and enhance the transmission reliability. By using the auto adaptive algorithm, it enhances the system capacity of HAC-ML system effectively.
Wireless module HAC-ML in the meter:
HAC-ML contains measurement, detection, data saving, valve control, can fit for different kinds of meters.
The technique spec is as following:
Working Frequency 475~495MHz
Transmitting Power 17dBm
Frequency Stability ±5PPM
Working Temperature -20℃~70℃ (-40℃~80℃ Optional)
Working Bandwidth 125kHz/250kHz
Working voltage +2.8~6V
Receiving current ≤20mA
Transmitting current ≤130mA
Tramsmitting time max transmitting time ≤1.5s
Transmitting interval ≤ 24 hours.
Distance ≥5000m (LOS, line of sight)
Electric Parameter of Valve Voltage: 2.8~3.6V, Current: ≤160mA
Sleep current ≤8μA
Average working current ≤20μA