KR101937679B1 - Apparatus for monitoring IRU relay and the method using it - Google Patents

Abstract

The present invention relates to an apparatus for monitoring an IRU relay and a monitoring method thereof, capable of checking the status and durability of a relay so that there is no disruption of the train operation. The apparatus for monitoring an IRU relay includes: a relay panel that receives an electric signal from a first signal filter to monitor a signal for operating a relay, outputs the electric signal to a train control device through a second signal filter after the relay is operated, or monitors a signal for operating the relay after the relay is operated and transmits a control signal, which is received from the train control device, to the first signal filter through the second signal filter; and a monitoring board capable of receiving the total relay operation state data and the number of operation times by the user′s operation during operation or after operation from the relay panel and monitoring the operation state of an interface relay device and a relay operation state data.

Description

Technical Field [0001] The present invention relates to an IRU relay monitoring apparatus and an IRU relay monitoring apparatus,

The present invention relates to an IRU relay monitoring apparatus and a monitoring method using the IRU relay monitoring apparatus. More particularly, the present invention relates to an IRU relay monitoring apparatus and a monitoring method using the same, A relay panel for outputting a control signal to the control device or a control signal received from the train control device through a second signal filter, monitoring a signal for operating the relay after the relay operation, and transmitting the control signal to the first signal filter; And a monitoring board that receives the total relay operation state data and the operation count from the relay panel during operation or after operation and is capable of monitoring the operation state of the interface relay device itself and the relay operation state data, And a monitoring method using the same.

As shown in FIGS. 1 (a) and 1 (b), an interface relay unit (IRU) installed in a VOBC (Vehicle On-Board Computer) subrack is a Field Replaceable Unit ) Is a device that serves as an interface between the EU (Electronic Unit) device and the vehicle subsystem.

1 (c) is a relay 41ea attached to the interface relay device. If the relay 41ea is installed in the actual site, it is not possible to check the relay unlike the photograph. To replace the relay, the sub rack should be removed and replaced.

Problems of the conventional interface relay device are that it is impossible to analyze the failure cause and to detect the failure point when the train can not be controlled due to the relay contact failure or the relay operation failure during the train operation, The maintenance process is inefficient because of the necessity of replacing the relays or repairing the boards.

A total of 41 relays are used in the conventional interface relay device, and a large number of relays are an important part that must be operated without any trouble during the operation of the train, so that the state and durability of each relay should be checked at all times to prevent trouble in running the train .

However, the IRU installed in the field has difficulty in confirming the operation status of the relays due to the limited field installation space, and it is difficult to predict the relay durability due to the increase of the number of relay operation due to the train operation state, Have.

Also, due to the above-mentioned structural problem and the absence of the relay monitoring function, it is inconvenient to periodically remove the IRU sub rack from the VOBC rack and check it through separate test equipment, We are in the process of putting in the input.

Therefore, it has become necessary to monitor the operation status of the relays installed in the IRU and to develop a monitoring device capable of measuring the number of operations, so that the status of each relay can be checked.

Korean Patent Publication No. 2000-0065955 Korean Patent No. 0827331 Korean Patent No. 0905584 Korean Registered Patent No. 0118131

It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide a relay relay system in which a total of 41 relays used in an interface relay device are checked to see if they operate without any abnormality while the train is running, And an IRU relay monitoring device for preventing an interruption of the IRU relay.

According to an aspect of the present invention, there is provided a method of controlling a relay apparatus, comprising: receiving an electrical signal input from a first signal filter to monitor a signal for operating a relay, outputting the relay signal to a train control device via a second signal filter, A relay panel for monitoring a signal for operating the relay after the relay operation via the second signal filter, and transmitting the control signal to the first signal filter; And a monitoring board capable of receiving the relay operation status data and the number of operations from the relay panel by operation of the user during operation or after operation, and monitoring the operation status of the interface relay device itself and the relay operation status data.

The monitoring board includes a circuit for inputting a signal input to a plurality of relays, a relay coil operation signal outputted through a contact and a relay contact operation signal, for limiting a specific voltage and current, a relay coil signal input protection A signal input section comprising a circuit and a relay contact signal input protection circuit; The coil signal and the contact signal inputted through the signal input unit are periodically scanned to monitor the change in the state of the plurality of relays and the existing relay state is stored in advance and compared with the currently detected relay state to check the change state, A signal processor for dividing the state into a coil state and a contact state, checking and storing the time, counting the current number of relay operations, and storing the counted number in the internal memory; And a signal display unit for displaying the states of the plurality of relays transmitted from the signal processing unit through an LED.

The monitoring board is connected to the program screen of the PC, and when the train is operated through the retrieval button, the monitoring board retrieves data of the relay state and the number of operations stored in accordance with the RTC in a designated date range unit, Regenerated in accordance with certain rules to identify the phenomenon of relay failure occurred during operation.

Since the RTC in the monitoring board is installed, it is possible to store relay operation status data by reflecting the actual time, and the universal USB interface is used to interface with the PC through the USB interface, so that data transmission / It is possible.

And a portable tester capable of directly connecting to the interface relay device, so that a test plan capable of confirming the state of the relay after operating the relay coil can be applied to enable maintenance and repair in a short time, and communication with the relay monitoring system It is possible to save the number of operation and logs for each relay serial.

A method for monitoring using an IRU relay monitoring apparatus, the method comprising: receiving a signal input to a plurality of relays through a signal input unit, a relay coil operation signal output through a contact, and a relay contact operation signal; The signal processing unit periodically scans the coil signal and the contact signal input through the signal input unit and monitors the change of the plurality of relays; Storing the previous relay state in advance in the signal processing unit and comparing the current relay state with the current relay state to check the change state; And a signal display unit displaying the plurality of relay states received from the signal processing unit through an LED.

The signal processor further divides the current relay state into a coil state and a contact state, stores the time, counts the current relay operation count, and stores the current relay operation count in the internal memory.

Wherein the storing in the internal memory comprises: storing information by reflecting an actual time according to an RTC; The interface with the PC via the USB interface includes transmitting and receiving data using a universal USB scheme; Loading data on a relay state and an operation count stored in accordance with the RTC in units of a specified date range when a train is operated through an import button on a program screen of the PC; Continuously reproducing a relay state and an operation frequency for a predetermined time period so as to confirm a relay fault phenomenon generated during a train operation through a data reproducing program of the PC; And selecting a plurality of time setting and skip functions capable of checking the coil operation state of the relays in the past, the contact operation state of the relays, and the number of times of operation of the contacts of the relays in the PC.

In the present invention as described above, the relay monitoring device is applied to the interface relay device mounted on a domestic train, so that the status of the relay of the interface relay device can be visually checked in real time through the signal display during the train operation, The time can be minimized and the convenience of operation can be increased.

In addition, the present invention stores relay states in real time during train operation, facilitates the analysis of the cause when a fault occurs, responds quickly to faults caused by faulty relays, and provides a relay state And the log data are checked to recover the train trouble, which is convenient for operation.

In addition, the present invention can prevent and maintain the durability of the relays based on the information on the number of relay operations recorded by the relay monitoring apparatus. It is also possible to perform preventive maintenance to replace the relays, In the repair method, it is possible to shorten the maintenance process so that only the relays that need inspection can be disassembled and replaced, thereby achieving efficient maintenance management.

In addition, the present invention relates to an interface relay device in which the front surface of a sub-rack is designed to be open, an operation status indicator for confirming the status of the relay is mounted, a relay panel installed on the rear side is moved to the front, It moves to the up / down position and maintenance is possible without separate mechanical separation.

In addition, the present invention has been improved so that it can be visually confirmed through the LED display unit by adding a total of 41 relay coil operation states and a monitoring system storing the relay state by receiving the contact operation state in real time.

In addition, the present invention improves the connection status by LED operation when connecting a portable tester or a PC, develops a portable tester that can directly connect to the interface relay device in the field, and can check the status of the relay after operating the relay coil It is possible to maintain the test within a short time by applying the test plan.

In addition, the present invention can manage the history of operation of each product, such as improvement of maintenance efficiency through the operation frequency of each relay serial and log storage function through communication with the relay monitoring system (relay log storage device).

In addition, the present invention can estimate the lifetime of the relay, which can be used as an important reference point for preventive maintenance.

In addition, the present invention is not limited to domestic technology,

The interface relay device is domestic and the state of the sub rack of the interface relay device is checked, so that it is easy to judge whether the relay operation is faulty or faulty, and the efficiency of the preventive maintenance can be improved.

In addition, due to the use of all foreign relays, it is possible to localize the relays that are weak in terms of maintenance cost and spare parts procurement, thereby improving technology independence, maintenance cost reduction and operational efficiency.

1 is a block diagram illustrating a configuration of an IRU relay monitoring apparatus according to the prior art.
FIG. 2 is a block diagram of an IRU relay monitoring apparatus according to an embodiment of the present invention. Referring to FIG.
3 shows a circuit diagram of an interface relay device applied to the present invention.
4 shows a circuit diagram of a monitoring apparatus in an interface relay apparatus applied to the present invention.
5 is a view showing a subrack configuration of an interface relay apparatus to which the present invention is applied.
6 is a flowchart showing an IRU relay monitoring method according to an embodiment of the present invention.
7 is a diagram illustrating a configuration of a PC program according to an embodiment of the present invention.
8 is a view showing a storage data retrieval screen and a storage data retrieval screen according to an embodiment of the present invention.

For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Further, detailed descriptions of well-known functions and configurations that may be unnecessarily obscured by the gist of the present invention are omitted.

2, the present invention includes a VOBC PSU (Power Supply Unit) 50, a VOBC EU (Electronics Unit) 60, a first signal filter 30, a second signal filter 10, A panel 20, a monitoring board 40, and the like.

The VOBC input / output signal is divided into a Vital output, a Vital input, a Non-Vital output, and a Non-Vital input signal.

The interface with the vehicle is composed of input / output signals of ON / OFF type.

- ON (logic "1" or "High"): + Power or power supply

- OFF (logic "0" or "Low"): No short circuit or power source

As shown in Table 1, Vital processing is performed on the signals that require reliable verification of the output by providing the vehicle with a dual-logic processed output in the VOBC.

The Vital input signal of Table 2 processes the two signals provided from the vehicle with the double logic of the VOBC and performs a Vital process on the signal that needs to be verified for the received signal.

The Non-Vital output signal of Table 3 is an output signal used for vehicle control by providing the vehicle with the output processed by the VOBC logic unit.

The Non-Vital output signal is composed of a single control line and shares a battery '-' line of a common return conduit or train.

In addition, the non-vital input signal of Table 4 is processed by the logic unit of the VOBC to monitor the state of the vehicle.

The non-vital outputs between the vehicle system and the onboard signals described above disconnect the EU from the EU when the train is operating in passive mode and connect the non-vital signals as long as there is an emergency braking hold-off signal in automatic mode. These functions are performed by a number of relays connected to the interface relay device.

The relay panel 20 receives an electrical signal input from a first signal filter 30 and monitors a signal for operating the relay. After relay operation, the relay panel 20 outputs the signal to the train control device through the second signal filter 10 Or the control signal input from the train control device is monitored by the second signal filter and the signal for operating the relay after the relay operation and transmitted to the first signal filter.

The monitoring board 40 receives the total relay operation state data and the number of operations from the relay panel 20 during operation or after operation by the user's operation and outputs the relay operation state data and operation counts to the relay operation unit It is a device that can monitor data.

The internal memory 45 is installed in the monitoring board 40 and monitors and monitors the relay operation power source data and the relay operation state data in real time and converts the relay coil operation signal and the relay contact operation signal into operation state data In real time.

The monitoring board 40 is connected to a program screen of the PC and loads data on the relay state and the operation count stored in accordance with the RTC on a specified date range basis when the train is operated through the retrieval button, May be regenerated in accordance with certain rules to identify the phenomenon of relay disturbances that occur during train operation.

As an embodiment of the present invention, the MCU 44 is additionally equipped with a built-in flash memory and an external memory.

The external memory stores the relay status information when an event occurs to the relay, and maintains the data so that the maintenance person can document it through the management program.

4, the monitoring board 40 includes signal input units 41 and 42, signal processing units 43, 44, 45 and 46, a signal display unit 47, and the like.

The signal input units 41 and 42 include a circuit for inputting signals input to 41 relays, a relay coil operation signal output through a contact, and a relay contact operation signal to limit two types of input signals of 24V and 100V, It consists of a relay coil signal input protection circuit consisting of a protection circuit and a relay contact signal input protection circuit.

The signal processing units 43, 44, 45 and 46 (MCU + CPLD) periodically scan the coil signal and the contact signal input via the signal input unit, monitor the change of the plurality of relay states, store the existing relay state in advance When the change status is confirmed by comparing with the currently detected relay status, the current relay status is divided into the coil status and the contact status, and the time is stored. The current relay operation count is counted and stored in the internal memory (for example, flash memory) Device.

Further, the logging function for recording the number of operation of the relays according to the present invention can predict the lifetime of the relay, which can be utilized as an important reference point for preventive maintenance.

The CPLD (Complex Programmable Logic Device) 43 uses the CPLD 43 to process the relay information, and outputs the relay operation information inputted through the protection circuit of the I / O board and the isolation circuit to the register And transmits the request when there is a request from the MCU 44.

Also, the CPLD 43 receives relay coil information and contact information through I / O at a ratio of 1: 1, and stores the information in a 41-bit register.

The stored register is assigned a CS (chip select) signal in units of 8 bits, and the MCU 44 periodically reads the register value selected by the address decoder to process the data.

The signal display unit 47 is a display device for displaying the states of the plurality of relays transmitted from the signal processing unit through an LED, and is a device for displaying the state of the relay to intuitively confirm the current state of the relay.

The relay signal passing through the relay coil signal input protection circuit in the signal input units 41 and 42 transmits the relay state through the insulation circuit for electrical safety so that it can be detected by the signal processing unit.

Since the RTC (Real Time Clock) is installed in the monitoring board, information can be stored to reflect the actual time, and the interface with the PC via the USB interface 46 is controlled by a USB Data transmission / reception is possible.

For example, the time is stored using the RTC function in the MCU 44 to accurately store the operating point of the relay.

An RTC dedicated battery is used to continuously operate the RTC function even when the monitoring board power is off.

As shown in FIG. 5, the present invention is configured for mounting a 19-inch 6U standard sub rack, and when the relay is replaced, the apparatus is not detached from the standard rack apparatus, and the relay is moved forward Install it.

In order to visually check the operation status of each of the relays, 41 LEDs are installed on the front plate, and an open type DOOR is installed on the front surface of the mechanism to freely mount the relays.

Therefore, it is possible to periodically check the state of the relay and improve the efficiency by shortening the maintenance process.

In the IRU monitoring system, the state of the relay coils and the contact state of the relay coils are input in real time, and the operation state display and the operation count are stored in the built-in internal memory 45 as log data. So that it can be utilized.

The contact states of the relays 41 transmit information to the operator by LED operation as follows.

- During contact operation (eg LED lights)

- When the contact is not operating (eg LED is off)

- During coil operation (eg LED lighting)

- When the coil is not operating (eg LED is off)

- When connecting with portable tester or PC (notebook) (eg LED lights)

- When not connected to portable tester or PC (notebook) (eg LED off)

As an example of the signal display unit 47 according to an embodiment of the present invention, a 32-bit MCU model is used for the MCU 44. [

The operation speed of the MCU 44 is driven at 100 MHz, and a 256 KByte flash memory and a 32 KByte SRAM are embedded.

Communication for the user interface can be connected to a PC or a notebook by using USB, and there is a USB terminal to be used for system development (console use).

The apparatus further includes a portable tester capable of directly connecting to the interface relay device in the field according to an embodiment of the present invention, and a test plan capable of checking the state of the relay after operating the relay coil is applied, And the maintenance efficiency can be improved through the function of the number of operation per relay serial and the function of log storage through communication with the relay monitoring system (relay log storage).

Specifically, the present invention can further include a test plan management unit for extracting a test case to be verified from a test case, setting a test scenario, and creating, editing, and verifying a platform-specific test plan.

Hereinafter, an IRU relay monitoring method for implementing the present invention will be described in detail with reference to FIG.

First, the signal input unit receives a signal input to 41 relays, a relay coil operation signal output through a contact, and a relay contact operation signal.

At this time, it limits the voltage current which can limit the voltage signal of two kinds of 24V and 100V, and protects the relay coil signal input made by the surge protection circuit and the relay contact signal input signal.

The signal processing unit periodically scans the coil signal and the contact signal input through the signal input unit to monitor the change of the plurality of relays (S101 to S103).

The signal processing unit stores the previous relay state in advance and compares the current relay state with the currently sensed relay state (S104).

The signal processor divides the current relay state into a coil state and a contact state, stores the time, counts the current relay operation count, and stores the current relay operation count in the internal memory (S106).

The signal display unit displays the states of the plurality of relays received from the signal processing unit through the LED.

The monitoring board stores the relay coil operation signal and the relay contact operation signal into operation state data and stores the relay state operation signal in the internal memory in real time .

9 and 10, the step of storing in the internal memory stores information by reflecting the actual time according to the RTC, and stores the information in the internal memory with the PC via the USB interface 46. [ The interface transmits / receives data in a universally usable USB mode and monitors the relay status and the number of operations stored in accordance with the RTC when the train is operated through the monitoring button 81 and the retrieve button 82, The relay status data transmitted to the PC is reproduced through the data reproduction program menu 87 by displaying the relay phenomenon occurred during the train operation A relay failure phenomenon display section 86 is displayed. Specifically, through the data playback program of the PC, the user continuously reproduces the state of the relay and the number of operations for a predetermined period of time so as to confirm the phenomenon of the relay failure occurring during the train operation.

In the PC, the coil operation state of the past relays, the contact operation state of the relays, the number of times of the cumulative contact operation of the relays can be checked, and a plurality of time setting and skip functions are selected.

The relay failure phenomenon display unit 86 is composed of a stand-alone block design that indicates the presence or absence of abnormalities of coils and contacts and the cumulative number of times of the input / output signals shown in Tables 1 to 4.

The cumulative number of relay operations can be used to predict the life of the relay and to be used for preventive maintenance.

In addition, it is also possible to divide the Vital output, the Vital input, the Non-Vital output, and the Non-Vital input signal shown in Tables 1 to 4 and transmit the cumulative number of coils and contacts to the manager so that a reasonable countermeasure can be made .

10: Second signal filter
20: Relay panel
30: First signal filter
40: Surveillance board
50: VOBC PSU
60: VOBC EU
81: Monitoring button
82, 85: Load button
84: Date Range Unit
86: Relay fault indication display
87: Data playback program menu

Claims (7)

The signal received from the first signal filter is monitored to operate the relay, the relay signal is output to the train control device through the second signal filter, or the control signal received from the train control device is passed through the second signal filter A relay panel for monitoring a signal for operating the relay after the relay operation and transmitting the signal to the first signal filter; And
And a monitoring board which receives the total relay operation state data and the operation frequency by the user's operation during operation or after operation from the relay panel and is capable of monitoring the operating state of the interface relay device itself and the relay operation state data,
The monitoring board includes:
A circuit for inputting a signal input to a plurality of relays, a relay coil operation signal outputted through a contact and a relay contact operation signal to limit a specific voltage and current, a relay coil signal input protection circuit comprising a surge protection circuit, A signal input section constituted by an input protection circuit;
A coil signal and a contact signal inputted through the signal input unit are periodically scanned to monitor the state change of the plurality of relays,
When the existing relay status is stored in advance and compared with the currently detected relay status, if the change status is confirmed, the current relay status is divided into the coil status and the contact status, and the time is stored. The current relay operation count is counted and stored in the internal memory ;
And a signal display unit for displaying the status of the plurality of relays transmitted from the signal processing unit through an LED. delete The method according to claim 1,
The monitoring board is connected to the program screen of the PC, and when the train is operated through the retrieval button, the monitoring board retrieves data of the relay state and the number of operations stored in accordance with the RTC in a designated date range unit, Wherein the regenerating unit is regenerated according to a predetermined rule so as to check the occurrence of a relay failure phenomenon generated during operation. The method according to claim 1,
Since the RTC in the monitoring board is mounted, the relay operation state data can be stored reflecting the actual time,
Wherein data can be transmitted / received at a constant rate through the USB interface of the PC. A monitoring method using the IRU relay monitoring apparatus according to claim 1,
A relay coil operation signal and a relay contact operation signal which are outputted through a plurality of relays and a contact are inputted through a signal input section composed of a relay coil signal input protection circuit composed of a surge protection circuit and a relay contact signal input protection circuit step;
The signal processing unit periodically scans the coil signal and the contact signal input through the signal input unit and monitors the change of the plurality of relays;
Storing the previous relay state in advance in the signal processing unit and comparing the current relay state with the current relay state to check the change state;
Displaying a plurality of relay states received from the signal processing unit through a LED;
Wherein the signal processing unit divides the current relay state into a coil state and a contact state, stores the time, and counts a current relay operation count and stores the current relay operation count in the internal memory. delete 6. The method of claim 5,
Wherein the storing in the internal memory comprises:
Storing information by reflecting an actual time according to an RTC;
The interface with the PC via the USB interface includes transmitting and receiving data using a universal USB scheme;
Loading data on a relay state and an operation count stored in accordance with the RTC in units of a specified date range when a train is operated through an import button on a program screen of the PC;
Continuously reproducing a relay state and an operation frequency for a predetermined time period so as to confirm a relay fault phenomenon generated during a train operation through a data reproducing program of the PC;
Further comprising the steps of: checking a coil operation state of a previous relay, a contact operation state of the relay, a number of times of operation of the contact of the relay, and selecting a plurality of time settings and a skip function in the PC, Monitoring method.

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