KR930008164B1 - Method and circuit for multi-communication network of intelligence system - Google Patents

Abstract

The plural networks and operation method for an intelligent system includes a first communication path to which the number (N) of communication systems are connected in common and installed as a common line for transmission of a communication control signal, N-1 logically summing processors two inputs of which are connected to two nearby communication systems and logically summing the control signal output from the communication systems, N-1 switches connected to the output port of the logically summing processors and switched according to the output of the logically summing processors, and a second communication path installed between the switches for transmission of data between the communication systems in units of sections and opened/closed according to the switching of the switch, thereby maximizing the usage of communication path.

Description

Multiple communication network of intelligent system and its operation method

1A and 1B are diagrams of a communication network according to the prior art.

2A and 2B are diagrams of a plurality of communication networks according to the present invention.

3 is a method for operating a plurality of communication networks according to the present invention.

* Explanation of symbols for main parts of the drawings

1: Switch for opening and closing communication path 2: OR gate for switch driving

3, 4: communication channel

System A to System N: Intelligent system that is a communication system

The present invention relates to a communication network for efficient communication between intelligent systems and a method of operating the same, in which a common communication channel is monopolized by only two or more system communication so as not to interfere with communication of another system. And a method of operation thereof.

The conventional communication network for communication between intelligent systems has been configured to connect a plurality of intelligent systems in series, such as the 1a diagram or in a ring form, such as 1b diagram, the conventional communication network configured as described above is two or more systems In order to communicate with other systems, the other systems had to wait until the communication channel was empty, so the communication latency of the lower priority system would be longer and the data transmission between the systems would be unnatural. There was a problem that the communication efficiency is lowered.

Accordingly, the present invention has been made in order to solve the problems of the prior art, the system to perform communication, multiple communication network of the intelligent system to use only the communication path between the corresponding system and the other communication path is available for communication And its operation method.

In order to achieve the above object, a communication network according to the present invention is a communication network in which a plurality of intelligent systems are connected, the communication system being connected in common, and a first communication path provided in common line for transmitting an adjustment signal for communication. And an input terminal connected to two neighboring communication systems of the communication system to logically process the control signal from the communication system, wherein the number (N) -1 of the systems is installed, and the logical sum processing means. A switch connected to an output terminal and coupled according to an output of the logical sum processing means, the switch being installed in the same number as the logical sum processing means, and installed between the switches to transfer transmission data between the communication systems for each section of the switch. And a second communication path that is opened and closed according to the transfer operation.

In addition, a method of operating a communication network according to the present invention includes a first step of initializing a communication network by resetting the output of the logical sum processing means so that the states of the switches are all OFF, and a system to communicate when a matter to be communicated occurs. A second step of investigating whether a response signal is received from all systems after transmitting a communication start request message including a counterpart system designation signal to be communicated through the first communication path; If it is not received, investigate whether it is not continuously received after a certain period of time, and if it is not received continuously, determine that there is a failure in the communication network, notify the user of the communication failure status, and exit. When a response signal is received, the contents of the received signal are received. A third step of analyzing and analyzing whether the second communication path of the corresponding section is available; As a result of the investigation, if the content of the response signal is a message that permits communication from both the communication status system and the intermediate system, communication is started by turning on the corresponding switches necessary for the connection of the communication path. If notified, after the fourth step of returning to the second step, and after performing the fourth step, it is determined whether the communication is completed after the communication is started, and the state of the switches is turned off as the communication is completed. And the fifth step of terminating.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

Figure 2a is a configuration diagram of a serial communication network formed in accordance with the present invention, Figure 2b is a configuration diagram of a ring-type communication network, 1 is a switch for opening and closing the communication channel, 2 is an OR gate for the switch drive, 3 and 4 is a communication path , System A to System N each represent an intelligent system that is a communication system.

As shown in the figure, the present invention provides a plurality of common connections to a first communication path 4 provided as a common line and a first communication path 4 for transmitting a preconditioning signal for communication between communication systems. An oar gate 2 having two input terminals connected to two communication systems A to N and two neighboring communication systems among the communication systems A to N, and the number of systems N-1 being installed; Connected to the output terminal of (2) and switched according to the output of the OR gate 2, and the transfer data between the switch (1) and the communication system (A to N) installed in the same number as the OR processing means It is provided to connect between each switch (1) and each of the system (A to N) for transmission separately, and has a second communication path (3) opened and closed in accordance with the switching operation of the switch (1).

Looking at the configuration of the present invention having the above configuration as follows.

According to the present invention, a plurality of communication systems (A to N) are commonly connected to a first communication path (4) for transmitting a preconditioning signal for communication, that is, a communication start signal and a communication end signal. In order to communicate with this other arbitrary system, it is possible to output a pre-adjustment signal for communication through the first communication path 4 to recognize that all systems connected to the communication path have attempted communication.

Then, not only the communication system designated as the communication target but also the systems located between the system which attempted to communicate and the system designated as the communication target, respond to the communication attempt signal according to whether its status can contribute to enabling communication. Output

For example, in order for the communication system A and the communication system D to communicate with each other, a part of the second communication path 3 controlled by the communication system B and the communication system C interposed therebetween is opened. Because you have to give. The communication systems A to D related to the communication are in a communication state, and the communication systems A to D respond in response to a communication failure signal even when a communication attempt signal is input from another system through the first communication network. Competent communication paths are perceived to be in communication with other systems.

When the communication system attempting communication receives a response signal indicating that communication is possible from the corresponding systems, communication between the communication attempted system and the communication target system is performed, and the actual communication is performed through the second communication path (3). Accordingly, the communication systems located between the two systems among the communication systems A to N recognize that the communication path area under their jurisdiction should be opened, and output a 'high' signal to the input terminal of the OR gate 2 connected thereto. Turn on the switch to open the communication path.

Accordingly, all communication systems (A to N) can know which systems are communicating with each other, and in this state, a communication system that wants to communicate can use only a communication path of an unused section.

The format of the signal for communication between the communication systems and the message data during the actual communication progress is set according to the design of the operator of the communication network, and detailed description will be avoided because any type of signal is possible.

On the other hand, in the present invention, as a preferred embodiment, the switch 1 is configured as a relay switch including a drive circuit.

Operation according to the operation method of the multiple communication network of the intelligent system according to the present invention configured as described above will be described with reference to FIG.

3 is a flowchart of the overall process of operating an intelligent system according to the present invention.

First, the entire communication network is initialized. The contents of the initialization are to reset the output terminals of the OR gates 2 so that the state of the switch 1 is all OFF (11).

When a matter to be communicated occurs (12), the system to communicate (any one of A to N) transmits a communication initiation request message containing a counterpart system designation signal to communicate through the first communication path (4). 13).

The communication start request message all the systems A to N carried in the first communication path 4 are received, and all the communication systems are read as well as the system and the counterpart system requesting communication with the system designated as the communication partner. Then, the systems involved in the communication determine whether they can be involved in the communication, and transmit the determination result to the system that sent the communication request message.

Therefore, the system that sent the communication start request signal receives the response signal from the corresponding communication system installed in the second communication path section to be used for communication, and starts communication unless the system permission signal is transmitted from either system. I judge it in a state that I cannot do it.

For example, when system A transmits a communication start request signal to the first communication path for communication with system C, not only system C but also system B can communicate with system A. Transmit information about the response signal.

Accordingly, it is examined whether a response signal for the communication request signal is received (14). If the response signal is not received as a result of the investigation, it is checked whether it is not continuously received after a predetermined time. The user is notified of the disabled status and terminated (15, 16).

When the response signal is received as a result of the survey 14, the content of the received signal is analyzed to determine whether the second communication path 2 necessary for communication is available (17). If communication is allowed from all of the systems installed in the system, communication is started. If any system has notified that the communication is impossible, the process proceeds to step 13 of transmitting the communication request signal.

When the communication is initiated, the systems involved in the communication output a 'high' signal to the input terminal of the ora gate 2 connected thereto so that the ora gate outputs the 'high' signal to the switch 1 (18). The switches 1 are turned on according to the output of the OR gate 2 to form a communication path in a section necessary for communication (19).

In this case, even if communication between some systems is started, if it is in contact with some sections of the second communication path 3, the remaining systems can communicate using the second communication path 3 of the remaining sections.

After initiating the communication, the systems determine whether the communication is completed (20), and output the 'high' signal output to the OR gate 2 as 'low' as the communication is completed to indicate the state of the switch 1. OFF and enters the standby state (21).

On the other hand, when the communication network is configured as a ring type as shown in FIG. 2 (b), the use of the second communication path is examined twice, thereby increasing the usability of the communication network.

That is, primarily to use the second communication path through the system (B) to communicate with the system (A) and the system (C), but from the system (B) and the system (C) If notified of the unavailability, it is checked whether the communication path to the system C through the system N is available.

Therefore, the present invention configured and operated as described above has the effect of maximizing the efficiency of using a communication channel.

Claims (2)

In a communication network to which a plurality of intelligent communication systems A to N are connected, the communication systems A to N are commonly connected, and are provided with a first communication path 4 installed as a common line for transmitting an adjustment signal for communication. And an input terminal connected to two neighboring communication systems of the communication systems A to N to process a control signal from the communication system and perform a logical sum processing means in which the number of systems (N) -1 is installed ( 2), a switch 1 connected to an output terminal of the logical sum processing means 2 and switched according to the output of the logical sum processing means 2, and provided with the same number as the logical sum processing means 2; In order to transmit the transmission data between the communication system (A to N) for each section characterized in that it comprises a second communication path (3) installed between each switch (1) to open and close according to the switching operation of the switch (1) When communicating A plurality of network system. Two input terminals are connected to a first communication path 4 to which a plurality of communication systems A to N are commonly connected, and two neighboring communication systems of the communication systems A to N, and the number N of systems. -1 connected to the logical sum processing means (2) and the output terminal of the logical sum processing means (2) is switched according to the output of the logical sum processing means (2), the same number as the logical sum processing means (2) A second communication path installed between the switches 1 to transfer the transmission data between the switches 1 and the communication systems A to N for each section and opened and closed according to the switching operation of the switch 1. (3) A method of operating a communication network comprising: a first step (11) of initializing a communication network by resetting the output of the logical sum processing means (2) such that the state of the switch (1) is all turned OFF. If a problem occurs, the system (A to Any one of N is a second step (12 to 12) for investigating whether a response signal is received from all systems after transmitting a communication start request message including a counterpart system designation signal to be communicated through the first communication path (4). 14), and as a result of the investigation of the second step (12 to 14), if the response signal is not received, it is checked whether it is not continuously received after a predetermined time, and if it is not continuously received, it is determined that there is a failure in the communication network and the communication is not possible Notifying and terminating the user, and when a response signal is received, analyzing the contents of the received signal to investigate whether the second communication path 2 in the corresponding section is available (15 to 17) and the third step. As a result of the investigation (15 to 17), if the content of the response signal is a message that permits communication from both the communication partner system and the intermediate system, the corresponding message required for connection to the communication path is required. If the communication is started by turning on the locations (1), but any system has been informed that the communication is not possible, the fourth steps (17 to 19) and the fourth step of returning to the second steps (12 to 14) are performed ( 17 to 19) After performing the communication, the systems determine whether the communication is completed, and in the fifth step (20, 21) of turning off the state of the switches (1) and terminates as the communication is completed. Communication network operating method characterized in that performed by.

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