JPS62287723A - Communication supervisory equipment - Google Patents

Abstract

PURPOSE:To attain quick countermeasures by receiving a text missing on its way due to permanent collision, using a decoding means so as to decode an its own station address at the head part by a decoding means and displaying it on a display means thereby discriminating an address being a cause to disabled communication. CONSTITUTION:A reception means 6 of a communication supervisory means 5 is connected to a power line carrier 1 and intercepts a communication signal. The decoding means 7 decodes an intercepted signal where the own station address part exists as the communication text and the next opposite station address or the next data part does not exist, that is, the signal given from terminal equipments of plural same own station addresses, and a display means 8 displays the decoded own station address. Thus, the permanent collision of two sets of adaptors A3a, B3b is recognized by recognizing the own station address to quicken the countermeasures.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention Field of Industrial Application The present invention relates to a communication monitoring device for a home automation system using a power line carrier communication method.

Conventionally, in this type of system, in order for a plurality of terminals to communicate with each other, index numbers (
(hereinafter abbreviated as "address") system, and uses a message format of own station address - partner station address - data. Only one address is assigned to each terminal, and duplication is not allowed.

Therefore, even if multiple terminals happen to start transmitting at the same time, their own addresses are different, so each terminal notices the communication conflict and interrupts transmission, and a certain period of time based on the own address has elapsed. By resuming transmission later, communication collisions are avoided and system reliability is restored.

Problems to be Solved by the Invention Conventional techniques cannot avoid communication conflicts due to incorrect address settings.

For example, when the addresses of two terminals are the same, the specific time based on the own address is also the same.

Therefore, when these two terminals start transmitting at the same time, they first send their own station address in the message, and only when a collision is detected at the next destination station address or the next data part do they send the message. However, since the timing for resuming transmission is also the same, communication will be permanently unavailable due to repeated collisions (hereinafter abbreviated as "permanent collision").

Therefore, other terminals are also unable to communicate, and the reliability of the system is significantly reduced.

The present invention eliminates these conventional drawbacks and provides a highly reliable home automation system.

Means for Solving the Problems In order to solve all of the above conventional problems, the present invention adopts an index number system as a mutual identification means for a plurality of terminals, has the index number of the own station in the communication message, and connects the power line. a receiving means connected to a power line of a home automation system using a power line carrier communication method as a communication medium and intercepting communication between each terminal;
Deciphering means that decodes the received signals of this receiving means and, when intercepting the simultaneous transmission of communication messages with different contents issued by multiple terminals having the same index number in the system, decodes all the own station index numbers in this message. and display means for displaying the decoded index number.

Operation With the above configuration, the present invention receives a communication message that is missing in the middle due to a permanent collision, decodes the own station address at the beginning using the decoding means, and displays it on the display means. You can find out the address that caused the incapacity,
Prompt countermeasures can be taken, and the above-mentioned problems can be easily solved.

Example Examples thereof will be described below with reference to the accompanying drawings.

In FIG. 1, the receiving means 6 of the communication monitoring means 6 is connected to the power line carrier path 1 and intercepts the communication No. 4.

The decoding means 7 detects among the intercepted communications No. 4, those in which the own station address part is valid as a communication message, but the next partner station address or the next data part is not valid, that is,
Messages sent from a plurality of terminals having the same own address are decoded, and the decoded own address is displayed on a display means 8.

In FIG. 2, adapter 3a and adapter B3b
Assume that the address setting is incorrect and the same address is all set. The equipment person 4a and the equipment B4b are connected to the controller 2 via the adapter 3a and adapter B3bi, respectively.
controlled. The controller 2 controls the device 4a and the device B4b and monitors their states.

Therefore, on the power line conveyance path 1, there is a connection from the controller 2 to the adapter 3a or adapter B3b, and from the adapter 3 to the adapter 3a or adapter B3b.
Communication 4 from 1L or adapter Bsb to controller 2
The numbers are going back and forth.

Suppose now that the device person 41L and the device B4b are in different states. At this time, communication for monitoring is performed in response to a request from the controller 2, but since the Addafuri person 3a and the adapter B3b have the same local address, they end up transmitting at the same time, and the data part of the message is A communication collision is noticed, but the timing of resuming transmission also becomes a permanent collision.

Here, the communication monitoring device 5 decodes and displays the address of its own station in the message that caused the permanent collision.

Therefore, by knowing this own station address, it is possible to know about permanent collision between the two adapters 31L and adapter B3b, and countermeasures can be quickly taken.

FIG. 3 shows another embodiment of the present invention, in which a communication monitoring device is incorporated within the controller 12.

Its functions are as described above, but it has the advantage of being easy to install.

Effects of the Invention As described above, according to the present invention, when system reliability is degraded due to permanent collision, the incorrectly configured address that caused it can be immediately known, so system reliability can be quickly restored. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the invention, and FIGS. 2 and 3 are block diagrams showing other embodiments of the invention. DESCRIPTION OF SYMBOLS 1... Power line carrier path, 6... Receiving means, 7... Decoding means, 8... Displaying means.

Claims (1)

[Claims] An index number system is adopted as a mutual identification means for multiple terminals, the index number of the own station is included in the communication message, and the terminal is connected to the power line carrier path of a home automation system using the power line carrier communication method using the power line carrier route as the communication medium, A receiving means for intercepting communications between each terminal, and decoding the received signals of this receiving means, and when intercepting simultaneous transmission of communication messages with different contents from multiple terminals having the same index number in the system,
A communication monitoring device having decoding means for decoding the local station index number in the telegram, and display means for displaying the decoded index number.