Centralized control type monitoring system of electricity meter based on BACnet (a data communication protocol for building automation and control networks)

Abstract

The invention relates to a remote monitoring and acquisition system of an electricity meter, in particular to a fieldbus type network monitoring system of an electricity meter based on BACnet (a data communication protocol for building automation and control networks). Aiming at overcoming the defects of the prior art that a large amount of labor and materials are needed for manual meter-reading monitoring, the invention provides the fieldbus type network monitoring system of the electricity meter based on the BACnet. The monitoring system of the electricity meter adopts three-stage control, a plurality of field controllers are adopted for lowest-stage control, area control stations are adopted for second-stage control, and a central control station is adopted for third-stage control; and the three-stage control nodes adopt a BACnet connection for communication, and the field controllers are BACnet dispersible programmable microprocessors. The fieldbus type network monitoring system of the electricity meter based on the BACnet is characterized in that each BACnet dispersible programmable microprocessor has a random-access memory (RAM) data memory unit which stores a dynamic private key corresponding to an address, and the private key can be updated when in restarting each time.

Description

field of invention

[0001] The invention relates to a remote monitoring and collecting system for electric meters, in particular to a network electric meter monitoring system based on BACnet field bus. Background technique

[0002] At present, the data collection work of electric meters is still completed by the traditional method of door-to-door door-to-door entry by over-standard personnel, which has many disadvantages. First, a large amount of manpower needs to be invested in meter reading work. The meter also reduces the safety of users. At the same time, there are also some inaccuracies in manual meter reading, which leads to corruption and bribery loopholes. With people's understanding of these disadvantages, some automatic overmeter systems have appeared, such as the automatic card-swiping type of the watt-hour meter. However, the above-mentioned method needs to be replaced with a new meter, and this card-swiping type of watt-hour meter is usually expensive. For some ...

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