WO2011152615A2

WO2011152615A2 - Diagnostic device for input and output module of triple modular redundancy system

Info

Publication number: WO2011152615A2
Application number: PCT/KR2011/003305
Authority: WO
Inventors: 박은희
Original assignee: (주)지디스
Priority date: 2010-05-31
Filing date: 2011-05-03
Publication date: 2011-12-08
Also published as: KR100989640B1; WO2011152615A3

Abstract

The preset invention relates to a diagnostic device for an input and output module of a triple modular redundancy system, and more particularly, to diagnosing the integrity of the input and output module by receiving a result value of a signal which is applied to the triple modular redundancy system through a data cable and outputting a state thereof. One embodiment of the present invention comprises: a power input unit configured to receive external power and to apply a driving power; an input and output terminal unit connected to an input and output module of a triple modular redundancy system to input and output a predetermined voltage; a relay unit configured to apply a constant voltage to the input and output module of the triple modular redundancy system; a main control unit configured to control input and output signals of the input and output terminal unit and relay unit; and a communication transformation unit for a dynamic data exchange with the triple modular redundancy system. According to the present invention, it is possible to accurately and quickly diagnose the integrity of the input and output module in the triple modular redundancy system and thus to rapidly identify whether or not failure has occurred, so that serious errors, including a system stop and so on, can be prevented from occurring.

Description

I / O module diagnosis device of triple system

The present invention relates to an input / output module diagnostic apparatus of a triple system, and more particularly, it is possible to diagnose the health of the input / output module by receiving a result value for a signal applied to the triple system through a data cable and outputting a state thereof. The present invention relates to an input / output module diagnostic apparatus of a triple system.

In general, Triple Modular Redundancy (TMR) consists of three main controllers that perform the same control operation, and each controller gives its own output, compares the results, and gives a majority vote.

The triple system implements the principle of majority vote, and the basic logic is determined in the form of output logic for the tripled inputs A, B, and C. Two controllers must be sound at all times to produce correct output, and since there is only one final selection circuit, if this circuit fails, the sound output evaluation of the I / O module cannot be guaranteed even if the multiplexed controller itself is sound. Most important of all.

However, until now, the triple system has been used without undergoing a separate soundness evaluation in the input / output module, in which case there is a problem that a serious error including a system stop due to the failure of a specific input / output module.

SUMMARY OF THE INVENTION An object of the present invention for solving the above problems is to provide an input / output module diagnostic apparatus of a triple system that can accurately and quickly diagnose the health of an input / output module of a triple system.

In order to achieve the above object, an input / output module diagnostic apparatus of a triple system according to an embodiment of the present invention includes: a power input unit configured to apply external power to drive power; An input / output terminal unit connected to an input / output module of the triplex system to input and output a predetermined voltage; A relay unit applying a predetermined voltage to the input / output module of the triple system; A main control unit controlling an input / output signal of the input / output terminal unit and the relay unit; And a communication conversion unit for dynamic data exchange with the triplex system.

According to a preferred embodiment, the power input unit includes a power input module to which the main power is input, a power conversion module converting the power voltage input to the power input module into a power voltage having a predetermined size, and the power conversion module is converted from the power conversion module. It characterized in that it comprises a power output module for applying a power supply voltage.

According to a preferred embodiment, the relay unit includes a signal input module to which a control signal of the main control unit is input, a channel selector for selecting an output channel of an input / output module according to the control signal, and a constant voltage at an output channel selected by the channel selector. It characterized in that it comprises a drive switch for transmitting.

According to an embodiment of the present disclosure, the main controller may include a first input / output diagnosis unit for diagnosing a state of the input / output terminal unit, a second input / output diagnosis unit for diagnosing a state of the input / output module, and operations of the first and second input / output diagnosis units. Characterized in that it comprises a processor unit for controlling each.

According to a preferred embodiment, the first I / O diagnosis unit operates while the input / output terminal unit and the input / output module are disconnected, and the second input / output diagnosis unit operates while the input / output terminal unit and the input / output module are connected and maintained. It features.

The present invention constructed and acting as described above has an advantage of preventing serious errors including system stoppages in advance, since it is possible to quickly and accurately diagnose the health of the input / output module of the triplex system by determining whether there is a failure. There is this.

1 is an exemplary view illustrating a state in which an input / output module diagnosis apparatus and a triple system are connected according to an exemplary embodiment of the present invention.

2 is a block diagram illustrating an internal configuration of an input / output module diagnostic apparatus according to an embodiment of the present invention.

3 is a block diagram illustrating a power input unit of an input / output module diagnostic apparatus according to an exemplary embodiment of the present invention.

4 is a block diagram illustrating a relay unit of an input / output module diagnostic apparatus according to an exemplary embodiment of the present invention.

5 is a block diagram illustrating a main control unit of an input / output module diagnostic apparatus according to an exemplary embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments based on the accompanying drawings.

Prior to this, the terms or words used in the present specification and claims are defined in the technical spirit of the present invention on the basis of the principle that the inventor can appropriately define the concept of the term in order to explain his invention in the best way. It must be interpreted to mean meanings and concepts.

In addition, it will be apparent to those skilled in the art that the present invention may be practiced without specific details such as specific components in the following description. Therefore, a detailed description of the general configuration for the governor well known in the art will be omitted.

1 is an exemplary view illustrating a state in which an input / output module diagnostic apparatus and a triple system are connected according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the input / output module diagnosis apparatus 100 of the present invention is connected to the triple system 500 to diagnose the health of the input / output module of the triple system 500, and the diagnosis result is monitored ( 100).

* The input and output module diagnostic apparatus 100 and the triple system 100 is connected by a cable, divided into a data cable and a communication cable is connected to each terminal.

Here, the triple system 500 is composed of three main controllers for performing the same control operation. Since the configuration of the triple system 500 is general knowledge in the related art, detailed description is omitted, and the following will be repeated. The diagnostic apparatus 100 for testing the health of the input / output module of the system 500 will be described in more detail.

2 is a block diagram illustrating an internal configuration of an input / output module diagnostic apparatus according to an exemplary embodiment of the present invention.

Referring to FIG. 2, the input / output module diagnostic apparatus 100 of the triple system according to an embodiment of the present invention may include a power input unit 110 to which external power is input to apply driving power, and that of the triple system 500. An input / output terminal unit 130 connected to an input / output module to input / output a predetermined voltage, a relay unit 150 for applying a predetermined voltage to the input / output module of the triple system 500, the input / output terminal unit 130 and the relay unit A main control unit 170 for controlling the input and output signals of the 150 and the communication conversion unit 190 for the dynamic data exchange with the triple system 500 is configured.

First, the power input unit 110 will be described.

Referring to FIG. 3, the power input unit 110 includes a power input module 112 to which main power is input, and a power conversion module to convert a power voltage input to the power input module 112 into a power voltage having a predetermined size. And a power output module 116 for applying the power voltage converted by the power conversion module 114.

According to an embodiment, the power input unit 110 configured as described above is supplied with a main power of + 24V and converted into ± 12V and + 5V through the power conversion module 114, and ± 24V in the main control unit 170. Power supply voltages of ± 12 V and +5 V, and power supply voltages of +24 V and ± 12 V are applied to the relay unit 150.

The power voltages classified and converted as described above are divided into input and output power sources of various sizes to diagnose the health of a plurality of channels constituting the input / output modules 130 and the input / output module of the triple system 500 to be described later. .

Next, the input / output terminal unit 130 will be described.

The input / output terminal unit 130 is connected to the input / output module of the triple system 500 and receives a predetermined power voltage from the power input unit 110 described above, and outputs the power voltage to the input / output module of the triple system 500. The power supply voltage is input from the input / output module of the triple system 500, and the health of the input / output module is diagnosed by comparing the difference between the input and output power voltages. Detailed description of the health diagnosis of the input and output module according to this will be described later.

Next, the relay unit 150 will be described.

Referring to FIG. 4, the relay unit 150 includes a signal input module 152 to which a control signal from the main controller 170 is input, and a channel selector 154 to select an output channel of an input / output module according to the control signal. And a driving switch 156 for transmitting a predetermined voltage to the output channel selected by the channel selector 154.

The relay unit 150 configured as described above selects a channel to be output from the triple system 500 and transmits a predetermined voltage to the selected channel in order to diagnose an output channel of the input / output module of the triple system 500. . Detailed description of the health diagnosis of the input and output module according to this will be described later.

Next, the main control unit 170 will be described.

Referring to FIG. 5, the main control unit 170 may include a first input / output diagnosis unit 172 for diagnosing health of the input / output terminal unit 130 of the diagnostic apparatus 100, and an input / output module of the triple system 500. And a second input / output diagnosis unit 174 for diagnosing the health of the processor, and a processor unit 176 for controlling operations of the first and second input /

output diagnosis units

172 and 174, respectively.

The first I / O diagnosis unit 172 operates in a state in which the input / output terminal unit 130 and the input / output module are disconnected, and the second input / output diagnosis unit 174 operates the input / output terminal unit 130 and the input / output module. It is desirable to operate in this maintained state. Accordingly, when the input / output terminal unit 130 and the input / output module are disconnected from each other, the self test for the input / output terminal unit 130 of the diagnostic apparatus 100 may be performed without interfering with the input / output module of the triple system 500. When the input / output terminal unit 130 and the input / output module are connected and maintained, the diagnosis of the input / output module of the triple system 500 can be performed through the difference in the power voltage inputted to and outputted from each other. will be. Detailed descriptions on the health diagnosis of the input / output terminal 130 and the input / output module through the main controller 170 will be described later.

Next, the communication converter 190 will be described.

The communication conversion unit 190 is for dynamic data exchange between the input / output module diagnosis apparatus 100 and the triple system 500 of the present invention described above, and the communication module of the triple system 500 NET port for communication with NCM (Network Controls Module) .It is used as BNC to TP Converer to convert Bayonet Neil-Concelman (BNC) to 10base TP. That is, it is an interface for communication between the diagnostic apparatus 100 and the triple system 500 of the present invention, and transmits and receives a power voltage value input and output from the input / output module of the triple system 500.

Hereinafter, the principle of diagnosing the health of the input / output terminal 130 of the diagnostic apparatus 100 and the input / output module of the triplexing system 500 according to the embodiment of the present invention will be described.

First, the method of diagnosing the input / output terminal unit 130 of the diagnosis apparatus 100 by the first input / output diagnosis unit 172 of the main control unit 170 is as follows.

1. When an AI (analog input) self-diagnosis command is input to a processor 176 programmed with a predetermined algorithm, an internal AI channel of the first input / output diagnosis unit 172 is opened, and a voltage of 2.5V is applied to the input / output terminal unit 130. Are delivered to each AI channel. Here, the voltage value measured in the AI channel of the input / output terminal unit 130 is returned to the first input / output diagnosis unit 172 to compare the two voltage values, and then determine whether there is an abnormality.

2. When a DI (digital input) self-diagnosis command is input to the processor 176, an internal DI channel of the first I / O diagnosis unit 172 is opened and a HIGH signal is input to each DI channel of the input / output terminal unit 130. Is passed on. Here, the HIGH signal value measured in the DI channel of the input / output terminal unit 130 is returned to the first I / O diagnosis unit 172 to compare the two signal values, and then determine whether there is an abnormality.

3. When an AO (analog output) self-diagnosis command is input to the processor 176, a voltage specified in each AO channel of the input / output terminal unit 130 is output and the internal AO channel of the first input / output diagnosis unit 172 is output. Passed to the processor 176. In this case, the processor 176 analyzes the transferred voltage value to determine whether there is an error.

4. When a DO (digital output) self-diagnosis command is input to the processor 176, a HIGH signal is output from each DO channel of the input / output terminal unit 130 and the internal DO channel of the first I / O diagnosis unit 172 is output. Passed to the processor 176. Here, the processor 176 analyzes the transmitted signal value to determine whether there is an error.

The method of diagnosing an input / output module of the triple system 500 by the second input / output diagnosis unit 174 of the main controller 170 is as follows.

1. When a diagnostic command for the AI (analog input) of the triple system 500 is input to the processor 176, a voltage specified in the AO (analog output) channel of the input / output terminal unit 130 of the diagnostic apparatus 100 is output. The triplet system 500 is input to the AI channel of the input / output module. Here, the voltage value measured by the input / output module of the triple system 500 is transmitted to the main controller 170 of the diagnostic apparatus 100 through the communication converter 190 to determine whether there is an error.

2. When the diagnostic command for the DI (digital input) of the triple system 500 is input to the processor 176, a HIGH signal is output from the DO (digital output) channel of the input / output terminal unit 130 of the diagnostic apparatus 100. The triplet system 500 is input to the DI channel of the input / output module. The signal value measured by the input / output module of the triple system 500 is transmitted to the main control unit 170 of the diagnostic apparatus 100 through the communication converter 190 to determine whether there is an error.

3. When the diagnostic command for the AO (analog output) of the triplexing system 500 is input to the processor 176, the voltage specified by the relay unit 150 is output from the AO channel of the triplex system 500 input / output module. The input and output terminal unit 130 of the diagnostic apparatus 100 is input to the AI channel. Herein, the voltage value input to the AI channel of the input / output terminal unit 130 is transmitted to the main controller 170 to determine whether there is an error.

4. When a diagnostic command for DO (digital output) of the triple system 500 is input to the processor 176, a HIGH signal is output from the DO channel of the triple system 500 input / output module by the relay unit 150. The input and output terminal 130 of the diagnostic apparatus 100 is input to the DI channel. Here, the signal value input to the DI channel of the input / output terminal unit 130 is transmitted to the main controller 170 to determine whether there is an error.

The foregoing has outlined rather broadly the features and technical advantages of the present invention in order that the claims that follow may be better understood. It should be appreciated by those skilled in the art that the above-described concepts and specific embodiments of the present invention can be used immediately as a basis for designing or modifying other shapes for carrying out similar objects to the present invention.

In addition, the above-described embodiment is only one embodiment according to the present invention, and various modifications and changes may be made by those skilled in the art within the scope of the technical idea of the present invention. Such various modifications and changes will also fall within the scope of the claims as set forth below within the scope of the spirit of the present invention.

The present invention relates to an input / output module diagnostic apparatus of a triple system, and more particularly, it is possible to diagnose the health of the input / output module by receiving a result value for a signal applied to the triple system through a data cable and outputting a state thereof. It can be used in the I / O module diagnosis device of the triple system.

Claims

A power input unit to which external power is input to apply driving power;

An input / output terminal unit connected to an input / output module of the triple system to input / output a predetermined voltage;

A relay unit applying a predetermined voltage to the input / output module of the triple system;

A main control unit controlling an input / output signal of the input / output terminal unit and the relay unit;

Input / output module diagnostic apparatus for a triple system, characterized in that it comprises a; communication conversion unit for dynamic data exchange with the triple system.
The method of claim 1,

The power input unit,

A power input module to which main power is input,

A power conversion module for converting a power voltage input to the power input module into a power voltage having a predetermined size;

I / O module diagnostic apparatus of a triple system, characterized in that it comprises a power output module for applying the power voltage converted in the power conversion module.
The method of claim 1,

The relay unit,

A signal input module to which the control signal of the main controller is input;

A channel selector for selecting an output channel of the input / output module according to the control signal;

I / O module diagnostic apparatus of a triple system, characterized in that it comprises a drive switch for transmitting a predetermined voltage to the output channel selected by the channel selector.
The method of claim 1,

The main control unit,

A first input / output diagnosis unit for diagnosing a state of the input / output terminal unit;

A second input / output diagnosis unit for diagnosing a state of the input / output module;

I / O module diagnostic apparatus of a triple system, characterized in that it comprises a processor for controlling the operation of the first and second input and output diagnostic unit, respectively.
The method of claim 4, wherein

The first I / O diagnosis unit operates while the input / output terminal unit and the input / output module are disconnected.

And the second input / output diagnosis unit operates in a state where the input / output terminal unit and the input / output module are connected and maintained.