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Power line narrowband carrier field test device applied to low voltage centralized meter reading system

A technology of centralized meter reading and testing equipment, applied in line transmission monitoring/testing, distribution line transmission system, line transmission components, etc., can solve the problems of customer application inconvenience, limit the development of power line communication technology, etc., and achieve easy expansion Effect

Active Publication Date: 2012-02-08
STATE GRID HUBEI ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above complex situation not only brings great inconvenience to the application of customers, but also limits the development of power line communication technology

Method used

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  • Power line narrowband carrier field test device applied to low voltage centralized meter reading system
  • Power line narrowband carrier field test device applied to low voltage centralized meter reading system
  • Power line narrowband carrier field test device applied to low voltage centralized meter reading system

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Experimental program
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Effect test

Embodiment Construction

[0047] Below in conjunction with accompanying drawing and embodiment describe in detail:

[0048] 1. Test device

[0049] 1. Overall

[0050] Such as figure 1 , the testing device includes a power line 00, a switching module 10, a carrier signal conversion module 20 and a data processing module 30 connected in sequence;

[0051] The switching module 10 is composed of a protector 11 and a circuit switching switch 12;

[0052] Carrier signal conversion module 20 is made up of first, second, third and fourth carrier modules 21, 22, 23, 24;

[0053] Data processing module 30 is made up of MCU31, power supply 32, keyboard 33, liquid crystal display 34 and communication interface 35;

[0054] Its connection relationship is:

[0055] The power line 00, the protector 11 and the circuit switch 12 are connected in sequence, and the four taps of the circuit switch 12 are respectively connected to the first, second, third and fourth carrier modules 21, 22, 23 and 24 in the carrier si...

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Abstract

The invention discloses a power line narrowband carrier field test device applied to a low voltage centralized meter reading system, relating to a power line carrier communication technology. The test device is structurally characterized in that: a power line, a protector and a circuit switch are connected sequentially; four taps of the circuit switch are connected with a first carrier module, a second carrier module, a third carrier module and a fourth carrier module in a carrier signal conversion module respectively; the first carrier module, the second carrier module, the third carrier module and the fourth carrier module are connected in parallel with an MCU31 (microprogrammed control unit 31) respectively through an RS232 (recommend standard 232) interface; and a power supply, a keyboard, a liquid crystal display and a communication interface are connected with an MCU respectively. The power line narrowband carrier field test device can be used for extracting and analyzing field parameters of power line carrier data of various carrier schemes, conforms to field tests of all communication functions by setting the program of a data processing module, is suitable for field test and debugging of the low voltage carrier centralized meter reading system and provides basis for establishing carrier technical schemes.

Description

technical field [0001] The invention relates to a power line carrier communication technology, in particular to a field test device for a power line narrowband carrier used in a low-voltage centralized meter reading system. Background technique [0002] The distribution of power lines in China is extremely complex, and the power consumption environment is also different. The communication environment of power lines is very harsh. On the one hand, there are many kinds of interference on the power line, such as pulse, white noise, etc. These interferences are highly abrupt and can change at any time with time and space. These complicated factors have caused huge obstacles to power line carrier communication, and have also increased difficulties for technicians to develop. In addition, due to the limitations of China's current power line communication technology and hardware resources, it is very difficult to analyze and study these interferences. Unreliability of power line ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/46H04B3/54
Inventor 李帆夏水斌傅士冀邓桂平郭玥李俊
Owner STATE GRID HUBEI ELECTRIC POWER RES INST
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