Optical fiber acquisition unit and electric meter data acquisition method

Abstract

The invention discloses an optical fiber acquisition unit, and belongs to the technical field of power consumption data acquisition units. The optical fiber acquisition unit comprises a micro control unit, at least two RS485 circuits, an optical communication circuit, a storage chip and a power supply module. The optical fiber acquisition unit provided by the invention upwards moves to a master station to adopt a high-sped optical fiber transmission mode to bear mass data transmission and enable communication link to be more stable, downwards moves to an electric meter for additionally arranging a plurality of RS485 buses, and each 485 bus can perform independent parallel running without mutual interference; and upstream and downstream transmission channels are modified, so that acquisition capacity for power consumption data is greatly improved, and therefore, high-frequency high-precision needs of existing power data acquisition can be completely met.

Description

technical field [0001] The invention relates to an electricity consumption data acquisition unit, in particular to an optical fiber acquisition unit. Background technique [0002] The electricity consumption information collection system is of great significance to the operation and asset management of electric power enterprises. It has the characteristics of wide collection range, large quantity, and strong timeliness. It should meet the basic requirements of real-time, stability, efficiency, and reliability. At present, the traditional electricity consumption information collection system uses collectors and concentrators to collect meter data: the collector uses a single-channel RS485 to connect with dozens of meters in the meter box, and sends the read data to the concentrator through the power carrier, and then The concentrator transmits the data back to the master station of the acquisition system through 2G / 3G / 4G / wired methods. Since the RS485 bus cannot perform auto...

AI Technical Summary

Problems solved by technology

Since the RS485 bus cannot perform automatic arbitration of the bus, that is, it cannot send data at the same time to avoid bus competition, the communication efficiency of a single RS485 is bound to be low; at the same time, the power carrier also has defects such as low transmission rate and easy interference, which leads to The real-time performance and reliability of data transmission in the power collection system are poor, and the current situation of low data collection efficiency has seriously restricted the application and development of low-voltage power data collection.

[0003] The current smart meter is mainly set up by the power supply enterprise, and its functions do not consider the experience and needs of electricity users; The query and operation of smart meters are extremely inconvenient, and the installation of smart power terminals that can directly query and operate smart meters in users' homes has greatly improved this situation

Obviously, using the existing power lines and transmitting smart meter data to users indoors through power carriers is the best solution to balance cost input and practical effects. If the terminal initiates communication randomly and disorderly, the possibility of power carrier conflict will continue to increase, the efficiency of data transmission will continue to decrease, and the user experience will become worse and worse, resulting in the failure of this solution to be well promoted and applied.

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