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Network accessing method of automatic meter reading system

An automatic meter reading and network technology, applied in multi-frequency code systems, distribution line transmission systems, user identity/authority verification, etc., can solve problems such as increasing maintenance difficulty and maintenance costs, and achieve high reliability.

Active Publication Date: 2013-10-16
HUNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the management of meter files is completely completed by the concentrator, when the energy meter fails or joins the wrong network, because the concentrator does not know, the deletion of the energy meter must be completed by the staff on site to modify and correct, which increases the difficulty of maintenance. and maintenance costs

Method used

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  • Network accessing method of automatic meter reading system
  • Network accessing method of automatic meter reading system
  • Network accessing method of automatic meter reading system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Embodiment 1: The electric energy meter 1 joins the PAN1 network (the electric energy meter 1 is a meter in the PAN1 network).

[0061] Step 1, power on reset from module 1;

[0062] Step 2, scan the network, find all PANIDs, select PAN1 network to join;

[0063] Step 3: Slave module 1 carries the meter address of electric energy meter 1 to main module 1, and initiates an application for joining the PAN1 network. From the default "0" to "3";

[0064] Step 4, the slave module 1 and the master module 1 perform EAP-PSK authentication, the authentication is successful, the master module 1 changes the "meter status" of the electric energy meter 1 from "3" to "2", and the slave module joins the network successfully;

[0065] Step 5, after joining the network, the master module 1 assigns a two-byte module device ID to the slave module 1, and the slave module 1 identifies itself accordingly, and uses it as the node address addressed by the routing sublayer. The routing sublay...

Embodiment 2

[0068] Embodiment 2: Electric energy meter 2 joins PAN1 network at the same time (the meter address of electric energy meter 2 is in the white list, but it is not an electric energy meter in this PAN1 network, so the authentication code is not in this network).

[0069] Step 1, power on reset from module 2;

[0070] Step 2, scan the network, find all PANIDs, select PAN1 network to join;

[0071] Step 3: Slave module 2 carries the meter address of electric energy meter 2 to main module 1, and initiates an application to join the PAN1 network. From the default "0" to "3";

[0072] Step 4, the slave module 2 and the master module 1 perform EAP-PSK authentication, and the authentication fails.

[0073] At this time, when the "meter status" of the slave module 2 is "3", it is "valid"; but when it is not "active", the master module 1 cannot communicate with it.

Embodiment 3

[0074] Embodiment 3: The energy meter 3 joins the PAN1 network at the same time (the energy meter 3 is a meter in the PAN1 network, but the node where the meter is located is removed, or the meter is added to the wrong PAN1 network, or the meter is faulty).

[0075] Step 1, power on reset from module 3;

[0076] Step 2, scan the network, find all PANIDs, select PAN1 network to join;

[0077] Step 3, the slave module 3 carries the meter address of the electric energy meter 3 to the main module 1, initiates an application to join the PAN1 network, the main module 1 checks that the meter address of the meter is in the white list, and sets the "meter status" of the electric energy meter 3 From the default "0" to "3";

[0078] Step 4, the slave module 3 and the master module 1 perform EAP-PSK authentication, the authentication is successful, the master module 1 changes the "meter status" of the electric energy meter 3 from "3" to "2", and the slave module joins the network success...

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Abstract

The invention discloses a network accessing method of an automatic meter reading system. The networking accessing method comprises the following steps of electrically starting and creating a network on an OFDM (Orthogonal Frequency Division Multiplexing) module at a concentrator side firstly, and then electrically adding the network on the OFDM module at an electric energy meter side. According to the network accessing method disclosed by the invention, the OFDM module adopts a mechanism of adding bidirectional authentication in the network, so the problem that an S-FSK power line carrier automatic meter reading system is unreliable in accessing the network is solved; a list file is maintained by a main module, so the problem that in the prior art, the list file work needs to be maintained in real time by a concentrator is solved; and meanwhile, the automatic separation can be carried out when an error network is added as the communication overtime time length is set, and thus the problem that in the prior art, the automatic separation cannot be carried out when an electric energy meter is added with the error network. Compared with the prior art, according to the network accessing method disclosed by the invention, several defects existing in the prior art are completely and effectively overcome, and the network accessing method of a power line carrier communication module with higher reliability is provided.

Description

technical field [0001] The invention relates to a method for connecting a power system to a network, in particular to a method for connecting an automatic meter reading system to a network. Background technique [0002] The current power line carrier communication mainly has a narrowband single carrier communication mechanism, which uses spread spectrum technology to improve the anti-interference and anti-interception capabilities of communication, such as PSK (phase keying modulation method) and S-FSK (narrowband dual-carrier multiplexing technology) power line communication mechanism. These methods not only have a very low frequency band utilization rate, but also have a low communication rate, and cannot effectively improve the communication effect by using technologies such as channel coding, encryption and decryption, access control, and efficient routing. [0003] In the existing S-FSK power carrier automatic meter reading system, the network access processing of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B3/54H04L9/32H04L27/26
Inventor 刘宏立谷志茹朱政坚朱青徐琨
Owner HUNAN UNIV
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