ZigBee technology provides power wireless automatic meter reading system for “new countryside, new power”
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Where to apply
Suburb of a city in North China
Market demand
At present, the collection of electricity data in rural areas in China still follows the traditional manual collection method. The collection personnel often need to climb high or enter the house, which is not only time-consuming and labor-intensive, but also human factors usually directly affect the accuracy and real-time performance of electricity data collection, which is not in line with the national Grid “new countryside, new power” requirements. To this end, the State Grid Corporation of China has launched the research on the “new countryside, new power” power supply model and the construction of comprehensive demonstration projects across the country. In view of this, Helicomm has launched a wireless automatic meter reading scheme based on ZigBee technology specifically for the “New Countryside, New Electricity” rural electricity transformation project. Using ZigBee’s wireless self-organizing network, the interconnection of electricity meters in the entire village is realized. The true wireless automatic meter reading.
solution
The whole system structure is shown in the figure. The combination of 485 bus + ZigBee + GPRS is adopted, and the multi-user electricity meters are centrally managed by the meter box. The data collector is connected, and one data collector is responsible for the power data collection of a meter box (that is, several nearby residents). Each ZigBee RS485 data collector in the village self-organizes a wireless mesh network, through the mesh network center node IP-Link2220 and MA8-9i (MA8-9i is a GPRS data transmission terminal, and IP-Link2220 is connected through the RS232/485 interface to form a data set device) to transmit the electricity consumption data of each household to the remote center. The system avoids the influence of human factors, improves the real-time and accuracy of data collection, and greatly improves the work efficiency of the rural electric power data collection system.
Solution advantage
1. Advanced wireless Mesh network, the network routing can reach at least 20 hops, and there is no communication fee.
2. The ZigBee module has built-in CSMA/CA anti-collision mechanism to effectively prevent data loss.
3. ZigBee module adopts DSSS spread spectrum mechanism, 16 channels can be freely selected to avoid signal interference.
4. Flexible system setup and short cycle.
4. The system is easy to maintain, supports wireless configuration and firmware upgrade, and does not need to climb up.
5. The products have passed FCC, CE and other international safety certifications.
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