High Accuracy Wireless Water Meter Reading System For Photoelectric Water Meter

Smart Water Advanced Metering Infrastructure for Photoelectric Water Meter

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.

Smart 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.

Concentrator: 

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

Each Concentrator can read 320 pieces water meter

It forward the control command of station to open/close the meter with electric valve.

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.

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.

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.

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.