Water Meter Automatic Meter Reading System RS485 M-BUS
Communication Data Collecting
Brife Introduction:
Remote meter reading system used technology for many years have
been verified, the system mature and stable. System equipment using
high-gain omni-directional antenna with signal propagation ability,
coverage area, the signal does not appear dead ends and blind
spots, has a strong on-site adaptability, meter reading success
rate of 100%, and compared to the same meter reading system It has
a structure adaptive network, free debugging, maintenance-free
characteristics.
1. Electronic Water Meter
- No power at normal time, and the meter should be powered during
reading time
- Electronic part is separated from mechanical parts without
affecting measurements.
- the display method of mechanical measurements is not changed so
that the user can read the water consumption visually.
- Photoelectric direct-reading technonlogy can read the value in the
meter window.
- The wiring is bus-mode, sampling method is character code reading
and then output as digital signal.
- The data readout by electronic way is the same with mechanical way
and the error ratio is almost zero.
Technical Parameters
- Working pressure:≦1Mpa
- Loss of pressure:≦0.06MPa
- Working temperature:≦30℃.
- Accuracy Class: 2.0
Electrical Parameters
- Ambient temperature:-15°C～+55°C.
- Relative Humanity:<90%.
- Signal sampling mode: read the value displayed in the window
directly using reflection type photoelectric sensing technology to
make sure of the accuracy of the data.
- Interface type: M-BUS type－meet Meter-Bus communication ,doule-line
mode.
- Connection Mode: M-BUS type(doule-line mode), there is no need to
distinguish polarity.
- Transmission rate :2400 bps,even-parity check,one stop bit.
2. Concentrator:
2.1 Data Collection Function
The concentrator read the data from the water meter at regular time
automatically trough M-BUS line based on preset meter address
(physical address) , store the current and historical data and
communicate with main station
2.2 Each Concentrator can read 320 pieces water meter
It forward the control command of station to open/close the meter
with electric valve.
2.3 Data Storage Function
Concentrator have built-in large volume FLASH with power-off
protection function, can store the data more than 10 years. The
data will be checked once being stored to avoid being sent with
invalid format.
Concentrator also can store the technical parameters meter address
and communication protocol etc., which are sent by main station or
HHU.
2.4.RTC Function
The built-in RTC (real time clock) in the concentrator meet the
different stepped tariff requirement. RTC set and check the time
through main station.
2.5. Data Communication Function
It has four communication interfaces to realize the communication
among meter, PDA and main station.
Each interface can connect with 80 pieces meters and 320 pieces in
total.
Two RS485/232 interfaces is to realize the communication between
lines and main station.
2.6. Data Collection And Process
Read the data displayed on the screen of the meter at the fixed
time
Read the data displayed on the screen of the meter regularly.
Calculate the current-month water consumption.
The water consumption in the fixed reading time ( the time can be
set)
Calculate and analysis the data to judge if the water consumption
is abnormal.
3. AMR2100 Main Station
3.1 Communication Mode
RS485 line communication between mains station and concentrator
3.3Reading Method
Main station will read the data out of concentrator.
Concentrator read the data at the fixed time and store them. The
main station will send command to read the data in the concentrator
through serial channel and store them in the database.
3.4 Main Function
Based on the different zones, you can select the concentrator to
read and click on “read now”. The data reading and acquiring of New
J10 concentrator is separated, it just display the reading status
is failed or sucessful.
