KR102146168B1 - A life checking system of ATC decoder board components and the managing method of ATC decoder board using thereof - Google Patents

Abstract

The present invention relates to a system for checking the remaining life of parts of an automatic train control device decoder board and a method for managing a decoder board using the same, and one of three carrier frequencies used in an automatic train control device (ATC) and one of eight speed codes. Generates a ground train control signal by synthesizing the first and second function generators that generate different main signals and sub signals by generating and modulating each of the first and second function generators, and the main and sub signals generated by the first and second function generators. A train control signal generator consisting of a control signal generator for controlling the control signal and an output control part for adjusting an output voltage of the ground train control signal generated by the control signal generator; A board connector to which a decoder board for receiving the ground train control signal and demodulating a speed code is electrically connected; A wired connection connector connecting the train control signal generator and the board connector to transmit the ground train control signal to the decoder board; A waveform output device connected to the board connector and a waveform output device connector to output a waveform of the speed code demodulated by the decoder board for each carrier frequency; A reception determination unit that determines whether the decoder board receives a ground train control signal by analyzing the waveform of the speed code output from the waveform output device, and measures the minimum received voltage for each carrier frequency and the limit of the decoder board for the ground train control signal. A minimum received voltage measuring unit to determine whether the decoder board is abnormal by comparing the threshold minimum received voltage value with a preset maximum minimum received voltage value, and a preset minimum minimum received voltage. A board analyzer composed of a remaining life calculation unit configured to calculate a remaining life of a signal processing module constituting a decoder board by percentageing an increase rate of the minimum received voltage for each carrier frequency as a reference; A board analyzer connector connecting the waveform output device and the board analyzer; And a data storage unit connected to the train control signal generator, the waveform output device, and the board analyzer to instruct the train control signal generator to generate a ground train control signal, and receive the waveform data of the waveform output device and the analysis result data of the board analyzer. After storing in the control computer to output to the monitor; transmits the arbitrarily generated ground train control signal to the decoder board of the automatic train control device, and analyzes the waveform of the speed code demodulated in the decoder board and converted into a digital signal. It is characterized in that it is configured to determine whether the decoder board receives a ground train control signal, determine whether the decoder board is abnormal, and calculate the remaining life of the signal processing module constituting the decoder board.

Description

A life checking system of ATC decoder board components and the managing method of ATC decoder board using thereof.

The present invention relates to a system for checking the remaining life of parts of an automatic train control device decoder board, and more specifically, to check the remaining life of parts of an automatic train control device decoder board using a system for checking the remaining life of parts of an automatic train control device decoder board. , It relates to a system for checking the remaining life of an automatic train control device decoder board component for preventing a train stop accident by thorough preventive maintenance, and a decoder board management method using the same.

The Automatic Train Control, which is mounted and used on the train for safe train operation, is a device that automatically controls the movement of trains and executes operation commands. Automatic Train Operation System (ATO) and on-board communication system It has subsystem functions such as (TWC).

Such an automatic train control device consists of an on-board device installed in a train control and a ground device installed on the ground to indicate the vehicle's progress condition, and the ground device consists of a signaling machine room and a rail.

After detecting the position of the train and the current situation in units of a certain section of the rail in the signaling machine room, the onboard device is sent to the rail by sending the ground train control signal according to the conditions of the track such as the speed of the train in progress, the position of the preceding train, and the opening and closing direction of the turnout. Receives the ground train control signal through the on-board receiver (antenna) provided in the outer and lower part of the leading vehicle.

The reception of the ground train control signal plays a very important role in the safe operation of the train. If a high-speed train fails to receive the ground train control signal in time due to a failure of the automatic train control device, the train operation may be stopped or a serious accident may occur. Therefore, the decoder board that receives the ground train control signal and demodulates the speed code should always maintain its normal operating state so that the speed code reception inability does not occur even in poor conditions through regular inspection. Although the decoder board can be used for a maximum of 3 years, it is also of great interest to railroad companies as trains are often interrupted due to malfunction of the signal processing module of the decoder board.

Decoder boards are equipped with 2 in the front car and 2 in the rear car, and 4 in total in one train formation, and 2 decoder boards in the leading direction are selectively used, and 1 decoder board is used for the current operation. The other decoder board is used as a spare to immediately switch and use when an error occurs in the currently used decoder board. Railroad companies are paying attention to the management of the decoder board for stable train operation, but the preventive maintenance of the decoder board is not performed completely, and train operation interruption accidents sometimes occur, reducing the reliability of rail use. Decoder boards are used by importing all foreign-made decoder boards due to low demand in Korea, and the high price and lack of reliability are putting a considerable burden on railroad companies.

In order to improve the above problems, a test apparatus for on-vehicle signaling devices for railway vehicles was developed in Korean Patent Registration No. 10-0143866.

The test device is a program input to the computer 10 after the tester device 20 outputs a frequency signal under the command of the computer 10 and the ground signal device 30 transmits the output frequency signal to the onboard signaling device. It is a test device that automatically determines the operation status of the on-board signaling device and only determines whether there is a malfunction.Because it is not possible to determine the remaining life of the decoder board that can be operated, it is not possible to specify the timing of replacement of the decoder board. There was a problem that it was not very helpful in preventing, and because it was not possible to grasp the degree of deterioration of the function of the part, it was not helpful in reducing the cost of the railway company.

Republic of Korea Patent Publication No. 10-0143866 (registered on April 13, 1998, test equipment for on-vehicle signaling devices for railway vehicles)

The present invention is to improve the above problems, by calculating the remaining life of the main parts constituting the decoder board of the automatic train control device, designating the replacement time of the decoder board, specifying only the parts with deteriorated functions, and replacing them in advance. By doing so, it contributes to safe train operation by reducing train stop accidents, and by self-maintenance of expensive decoder boards to prolong the life of the decoder board to help reduce costs.

In order to solve the above problems, the system for checking the remaining life of the decoder board components of the automatic train control device according to the present invention and the decoder board management method using the same include one and eight of the three carrier frequencies used in the automatic train control device (ATC). First and second function generators 210 that generate and modulate one of the speed codes to generate different main and sub signals, respectively, and main signals generated by the first and second function generators 210 A control signal generator 220 that generates a ground train control signal by synthesizing the and sub signals, and an output controller 230 that adjusts the output voltage of the ground train control signal generated from the control signal generator 220. A train control signal generator 200 configured; A board connector 300 to which a decoder board for receiving the ground train control signal and demodulating a speed code is electrically connected; A wired connection connector 240 connecting the train control signal generator 200 and the board connector 300 so that the ground train control signal is transmitted to the decoder board; A waveform output unit 400 connected to the board connector 300 and the waveform output connector 310 to output a waveform of the speed code demodulated by the decoder board for each carrier frequency; A reception determination unit 510 for determining whether the decoder board receives a ground train control signal by analyzing the waveform of the speed code output from the waveform output unit 400, and a carrier frequency of the decoder board for the ground train control signal and A minimum received voltage measurement unit 520 that measures the minimum minimum received voltage, and an abnormality determination unit 530 that determines whether the decoder board is abnormal by comparing the minimum minimum received voltage value with a preset maximum minimum received voltage value. ), and a residual life calculation unit 540 that calculates the remaining life of the signal processing module constituting the decoder board by percentage of the increase rate of the minimum received voltage for each carrier frequency based on the preset minimum minimum received voltage. Configured board analyzer 500; A board analyzer connector 410 connecting the waveform output device 400 and the board analyzer 500; And the train control signal generator 200, the waveform output device 400, and the board analyzer 500 are connected to the train control signal generator 200 to command the generation of a ground train control signal, and the waveform output device 400 A control computer 600 that receives waveform data and the analysis result data of the board analyzer 500, stores it in a data storage unit, and outputs it to a monitor; including the arbitrarily generated ground train control signal on the decoder board of the automatic train control device Transmitted to and analyzed the waveform of the speed code demodulated in the decoder board and converted into a digital signal to determine whether or not to receive the ground train control signal of the decoder board, to determine whether the decoder board is abnormal, and the residual signal processing module constituting the decoder board. It characterized in that it is configured to be able to calculate the life.

According to the present invention configured as described above, the decoder board with deteriorated reception capability of the ground train control signal is inspected in advance before the end of its life and only the parts with frequent problems are repaired, thereby reducing the speed code reception of the decoder board. The reliability of train operation is increased by preventing train interruption accidents, and by self-repairing the decoder board by purchasing only parts with frequent problems with the decoder board, it is possible to greatly reduce the cost of replacing the decoder board. It has the effect of enabling smooth train operation regardless of the board delivery schedule.

1 is a block diagram of a system according to an embodiment of the present invention.
2 is a circuit diagram of a control signal generator and an output control unit according to an embodiment of the present invention.
3 is a circuit diagram of a wired connection connector according to an embodiment of the present invention.
4 is a circuit diagram of a signal processing module of a decoder board displaying parts with frequent failures.
5 is a photograph showing a waveform of a speed code when the decoder board does not receive a ground train control signal.
6 is a photograph showing the waveform of the speed code when the decoder board normally receives the ground train control signal.
7 is a flowchart of a method for managing a decoder board according to an embodiment of the present invention.

Hereinafter, a system for checking the remaining life of a part of an automatic train control device decoder board according to a preferred embodiment of the present invention and a decoder board management method using the same will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a system according to an embodiment of the present invention, FIG. 2 is a circuit diagram of a control signal generator and an output control unit according to an embodiment of the present invention, and FIG. 3 is A circuit diagram of a wired connection connector, FIG. 4 is a circuit diagram of a signal processing module of a decoder board displaying parts with frequent failures, and FIG. 5 is a photograph showing a waveform of a speed code when the decoder board does not receive a ground train control signal, 6 is a photograph showing a waveform of a speed code when a decoder board normally receives a ground train control signal, and FIG. 7 is a flowchart of a method for managing a decoder board according to an embodiment of the present invention.

When the system of the present invention is schematically described with reference to FIGS. 1 to 7, the arbitrarily generated ground train control signal is transmitted to the decoder board of the automatic train control device by wire using the wired connection connector 240, and the decoder board is An automatic train control device configured to analyze the waveform of the speed code demodulated from the ground train control signal to determine whether the decoder board is abnormal and calculate the remaining life of the decoder board signal processing module. 100), which connects a train control signal generator 200 that generates a ground train control signal, a wired connection connector 240 through which a ground train control signal is transmitted, and a decoder board separated from the on-board automatic train control device. The board connector 300, a waveform output device 400 that outputs the waveform of the speed code demodulated in the signal processing module of the decoder board and converted into a digital signal, and the decoder board determine whether or not the ground train control signal is received or not It consists of a board analyzer 500 for calculating the remaining life of the signal processing module constituting the.

The train control signal generator 200 includes first and second function generators 210, a control signal generator 220, and an output controller 230.

The first and second function generators wirelessly transmit one and one of the eight speed codes (23Hz, 28Hz, 35Hz, 42Hz, 54Hz, 64Hz, 72Hz, 82Hz) according to the command for generating the ground train control signal from the control computer 600. After generating one of the three carrier frequencies (2,850Hz, 3,450Hz, 5,250Hz) for transmission to the network, the speed code and the carrier frequency are modulated to generate different main signals and sub-signals, and the control signal generator 220 ), the main signal and the sub-signal are synthesized to generate a ground train control signal.

In the ground train control signal, the train control command is changed according to the combination of the carrier frequency and the speed code constituting the main signal and the sub signal. For example, the ground train control signal in which the main signal 3,450 Hz + 23 Hz and the sub signal 5,250 Hz + 54 Hz are combined is a signal that commands the train to travel at a high speed of 80 km/h, and the main signal 2,850 Hz + 42 Hz and the sub signal The ground train control signal with 5,250Hz+54Hz synthesized is a signal that commands the train to decelerate at a speed of 35km/h. Two different carrier frequencies and speed codes are used for one ground train control signal.

The control signal generator 220 is an electronic circuit that generates a train control signal by synthesizing the main signal and the sub-signal generated by the first and second function generators 210, and as shown in FIG. 2 The main signal and the sub-signal generated from the function generator 210 are applied from the input terminal of the control signal generator 220 to the two'+' terminals, respectively, and pass through the function generator protection unit 221. The function generator protection unit 221 is a resistor installed in series at each'+' terminal, and serves to protect the function generator from accidents such as reverse voltage generated in a circuit after the input terminal. The function generator protection unit 221 may further include an electronic circuit including a diode, a switching element, etc. in addition to the resistor.

The main signal and the sub-signal passing through the function generator protection unit 221 are synthesized as a ground train control signal at point S in Fig. 2, and the main signal and sub-signal are the size of the waveform by the resistor of the function generator protection unit 221. As is reduced, the size of the ground train control signal waveform is also reduced. Thus, a voltage amplifying unit 222 and a current amplifying unit 223 are installed to amplify the wave shape of the ground train control signal, and the voltage amplifying unit 222 is OP -AMP, resistor, current amplifier 223 is composed of OP-AMP, resistor and capacitance, and the train control signal is input to the'+' terminal of the voltage amplifier 222 OP-AMP to amplify the voltage and then the current The amplification unit 223 is input to the'+' terminal of the OP-AMP to amplify the current. Thereafter, the ground train control signal is transmitted to the output control unit 230 after noise is removed by the noise removing unit 224 installed at the output terminal of the control signal generating unit 220 to make the waveform uniform. In the present embodiment, a capacitance of 4.7uF is used as the noise removing unit 224, but an electronic circuit composed of a diode, a pn junction element, or the like may be further provided.

The output control unit 230 is connected to the'+' terminal and the'-' terminal of the output terminal of the control signal generator 220 as shown in FIG. 2 to receive a ground train control signal, and the output control unit 230 Although not shown in FIG. 2, as an electronic circuit composed of a variable resistor, an IC device, etc., the output voltage of the ground train control signal is adjusted by changing the resistance value of the variable resistor by a program stored in accordance with a command in the control computer 600. .

The wired connection connector 240 is connected between the train control signal generator 200 and the board connector 300 to be described later to receive the ground train control signal whose output is adjusted by the output control unit 230 of the train control signal generator 200. It is transmitted to the decoder board mounted on the board connector 300. Referring to FIG. 3, in general, the ground train control signal transmitted from the signal machine room to the rail is received by the main coil (CN5-a) of the onboard receiver (antenna) at a certain distance from the rail, and CN5-c and CN5-d It is transmitted to the decoder board (CN5-b) of the automatic train control device on the vehicle through the line connecting the vehicle. When using the wired connector 240, the ground train control generated by the train control signal generator 200 (CN1-b) Since the signal is directly transmitted to the decoder board (CN5-b) through the line connecting CN1-a and CN5-d without going through the main coil (CN5-a) of the onboard receiver (antenna), the ground train control signal is It can be transmitted to the decoder board without going through the transmission/reception process.

The board connector 300 is composed of a connection part formed with a groove so that the connection pins at the bottom of the decoder board are connected, and a support part for supporting the connected decoder board from the bottom, and the ground train control signal generated from the train control signal generator 200 is It is transmitted through the wired connector 240 to be transmitted to the decoder board mounted on the board connector 300.

When the ground train control signal is transmitted to the decoder board, the signal processing module of the decoder board demodulates the speed code from the ground train control signal and converts it into a digital signal. Three signal processing modules are provided per decoder board corresponding to the three carrier frequencies used to generate the ground train control signal. The three signal processing modules separate the main signal and the sub signal by carrier frequency, and demodulate the speed code and convert the digital signal.

For example, in the case of a ground train control signal synthesized with a main signal of 2,850 Hz + 42 Hz and a sub signal of 5,250 Hz + 54 Hz, the signal processing module for 2,850 Hz provides the speed code of 42 Hz of the main signal, and the signal processing module for 5,250 Hz is Each of the 54Hz speed code of the sub-signal is demodulated and converted into a digital signal. In the case of the ground train control signal synthesized with the main signal of 3,450Hz+23Hz and the subsignal of 5,250Hz+54Hz, the signal processing module for 3,450Hz provided The signal processing module for 5,250Hz demodulates the speed code of 23Hz of the favor and the speed code of 54Hz of the sub-signal is converted into a digital signal.

4 is a circuit diagram of the signal processing module of the decoder board. When the main signal or the sub-signal separated from the ground train control signal enters the signal processing module, the TL074 element ( Speed code of analog signal is demodulated in A), noise is removed from MAX260 device (B), voltage is amplified in TL072 device (C), and speed code is converted to digital signal in 2N2222TR device (D), HC574V The noise of the speed code converted to a digital signal in the element E and the HC32 element F is removed, and the voltage of the digital signal is amplified. In particular, the TL074 element (A), TL072 element (C), 2N2222TR element (D), and HC574V element (E) indicated by red circles in FIG. 4 are parts with frequent failures in the signal processing module. It is a part to be replaced at once.

The waveform output unit 400 outputs the waveform of the speed code converted to a digital signal in the decoder board signal processing module through the waveform output connector 310 connected to the board connector 300, and outputs the output waveform data to the board analyzer connector 410 ) Through the board analyzer 500. 5 and 6, the analog waveform at the top of the screen is the waveform of the ground train control signal before demodulation in the signal processing module, and the digital waveform at the bottom of the screen is the speed code converted into a digital signal after demodulation in the signal processing module. It is a waveform. It is preferable to use an oscilloscope having a high resolution so that the waveform output unit 400 accurately represents a signal.

The board analyzer 500 is composed of a reception determination unit 510, a minimum reception voltage measurement unit 520, an abnormality determination unit 530, and a residual life calculation unit 540, and the reception determination unit 510 The process of determining whether to receive the decoder board by analyzing the waveform of the speed code transmitted from the waveform output unit 400 will be described in detail as follows.

The waveform of the speed code demodulated by the decoder board has the same form as the digital signal of FIGS. 5 and 6 depending on whether the decoder board receives the ground train control signal.

When the decoder board receives the ground train control signal, the waveform of the speed code has a high signal (5V) and a low signal (0V) as shown in the digital signal in FIG. 6, but when the decoder board cannot receive the ground train control signal. As for the waveform of the speed code, a high signal (5V) is formed, but a low signal (0V) is not formed as in the digital signal of FIG. 5. The main elements constituting the signal processing module of the decoder board are obsolete and cannot receive the ground train control signal of low output voltage. Therefore, one ground train control signal consists of a main signal and a sub signal, and the main signal and a sub signal each consist of a carrier frequency and a speed code. Therefore, in order for the decoder board to receive the ground train control signal, it is demodulated from the ground train control signal. A low signal (0V) must be formed in each of the two digital signal waveforms of the speed code.

In this way, the reception determination unit 510 determines whether or not the decoder board receives the ground train control signal through the formation of a low signal (0V) of the speed code waveform, and whether or not the decoder board receives the ground train control signal. The determination unit 510 transmits a signal to the control computer 600 so that the output control unit 230 constantly increases the output voltage of the ground train control signal by 10 mV. In general, since the output voltage value of the ground train control signal that the decoder board that is not used (unused) for train operation starts to receive is 70mV to 80mV, the starting value of the ground train control signal output voltage is preferably 50mV.

The lowest received voltage measuring unit 520 measures the output voltage of the ground train control signal, that is, the lowest received voltage, for each carrier frequency when a low signal (0V) is formed in the speed code waveform. Since two speed codes are included in one ground train control signal, at least two different ground train control signals are required to measure the minimum received voltages of three carrier frequencies. In addition, the largest value among the three minimum received voltages for each carrier frequency becomes the limit minimum received voltage at which a low signal (0V) is formed in all the speed code waveforms.

The abnormality determination unit 530 determines whether the decoder board is abnormal by comparing the limit received voltage value measured by the minimum received voltage measurement unit 520 with a preset maximum and minimum received voltage value. If the maximum and minimum reception voltage of the decoder board exceeds the maximum and minimum reception voltage, it is determined that the decoder board has an error, and the maximum and minimum reception voltage is set to 150mV by default, and the user can arbitrarily adjust the maximum and minimum reception voltage. .

The minimum received voltage value for each carrier frequency measured by the minimum received voltage measurement unit 520 is transmitted to the remaining life calculation unit 540, and the remaining life calculation unit 540 returns based on the preset minimum minimum received voltage. The remaining life of the decoder board signal processing module is calculated by percentage of the increase rate of the minimum received voltage for each frequency.

와 같이 계산된다. 잔여수명의 계산 값의 범위는 0~100%로서, 잔여수명이 0% 미만이 되면 0%으로 표기되고, 100% 초과가 되면 100%로 표기되도록 한다.In general, since the minimum minimum received voltage of a decoder board that is not used (unused) for train operation has a voltage value of 70mV to 80mV, for example, the minimum minimum received voltage set in advance is 75mV and in one signal processing module. If the measured minimum received voltage value is 100mV, the remaining life of the signal processing module is

It is calculated as The range of the calculated value of the remaining life is 0 to 100%, and if the remaining life is less than 0%, it is expressed as 0%, and if it exceeds 100%, it is expressed as 100%.

The control computer 600 is connected to the train control signal generator 200, the waveform output unit 400, and the board analyzer 500 to instruct the train control signal generator 200 to generate a ground train control signal, and The waveform data and the analysis result data of the board analyzer 500 are received and stored in a data storage unit, and the transmitted data is output to a monitor to notify the user.

Power for operating the system is supplied by an external separate power supply device, and it is preferable to use the power supply device with a safety function that prevents system failure due to overvoltage or the like.

Referring to FIG. 7, the decoder board management method using the system for checking the remaining life of the decoder board parts of the automatic train control device will be described. The decoder board for which the user will calculate the life is mounted on the board connector 300, and the control computer 600 Input the serial number of the decoder board to (S1).

Subsequently, when the user presses the generation button of a specific ground train control signal and commands the train control signal generator 200 to the control computer 600 to generate a ground train control signal (S2), the output control unit 230 generates a ground train control signal. After adjusting the output voltage of the control signal, the ground train control signal is transmitted to the decoder board mounted on the board connector 300 (S3).

The waveform output unit 400 outputs the waveform for each carrier frequency of the speed code demodulated in the decoder board and converted into a digital signal and transmits it to the board analyzer 500 (S4), and the reception determination unit 510 of the board analyzer 500 ) Analyzes the waveform of the speed code to determine whether the decoder board receives the ground train control signal (S5).

In addition, the minimum received voltage measurement unit 520 measures (S6) the minimum received voltage for each carrier frequency of the decoder board for the ground train control signal, and the abnormality determination unit 530 of the board analyzer 500 is limited. Determine whether the decoder board is abnormal by comparing the minimum received voltage value and the preset maximum minimum received voltage value (S7), and the carrier frequency based on the minimum minimum received voltage set in advance by the remaining life calculation unit 540 The remaining life of the signal processing module constituting the decoder board is calculated (S8) by converting the rate of increase of each minimum received voltage as a percentage.

Thereafter, the waveform data of the waveform output unit 400 and the analysis data of the board analyzer 500 are transmitted to the control computer 600 (S9), the data is stored in the data storage unit, and output to the monitor to inform the user of the test result. (S10), the user can repair the decoder board based on the test result output to the monitor.

The current analysis result data stored in the data storage unit may be compared and analyzed with the past analysis result data by a program stored in the control computer 600 and then output to notify the user.

According to the system for checking the remaining life of the parts of the automatic train control device decoder board and the management method of the decoder board using the same, the decoder board with the deteriorated reception capability of the ground train control signal is By inspecting and maintaining or discarding in advance, train operation reliability is increased by preventing train interruption or accidents due to poor speed code reception of the decoder board, and train operation by self-repairing the decoder board by purchasing large quantities of major parts constituting the decoder board. It can greatly reduce the expenditure required for the system, and has the effect of enabling smooth train operation regardless of the board delivery schedule of foreign decoder board manufacturers.

As of 2018, the price of one decoder board is 8,500,000 won, and the outsourcing maintenance cost is 620,000 won per sheet. If the decoder board is self-repaired by purchasing parts used for the decoder board in large quantities, the cost of the parts used for one decoder board is only 14,940 won, so the self-maintenance cost is 0.18% of the purchase cost of a new product, and 2.4 compared to the outsourced maintenance cost. %, and it was found that the use of the system according to the present invention increases the reliability of train operation, and the effect of reducing the budget of train operation is not small.

Table 1 shows the minimum received voltage for each carrier frequency of the three decoder boards, and after calculating the remaining life of the signal processing module, the signal processing module of the decoder board replaces the major parts that have deteriorated due to aging and returns it again. This is the result of measuring the minimum received voltage by frequency and calculating the remaining life of the signal processing module.

Serial Number Carrier frequency [Hz] Minimum received voltage [mV] Remaining life [%] Before maintenance After maintenance Before maintenance After maintenance 0041C 2,850 170 130 0 27 3,450 170 140 0 13 5,250 90 70 80 100 0086B 2,850 170 130 0 27 3,450 140 130 13 27 5,250 90 70 80 100 0046C 2,850 100 80 87 93 3,450 150 140 0 13 5,250 80 70 93 100

In the case of a decoder board with serial number 0041C, the minimum receiving voltage for each carrier frequency is 170mV, 170mV, and 90mV, so the limit and minimum receiving voltage is 170mV, and it exceeds the maximum and minimum receiving voltage of 150mV. It is determined to have occurred. After maintenance, the minimum received voltage for each carrier frequency is reduced to 130mV, 140mV, and 70mV, respectively, and the remaining life of the signal processing module is from 0% to 27%, from 0% to 13%, respectively, based on the minimum minimum received voltage of 75mV. It was confirmed that the increase was increased from 80% to 100%.

In the case of the decoder board with serial number 0086B, it was determined that an abnormality occurred because the limit minimum received voltage was 170mV, and after maintenance, the minimum received voltage for each carrier frequency was lowered, and the remaining life was increased.

In the case of a decoder board with serial number 0046C, it is determined that the minimum receiving voltage is 150mV, so it is determined to be normal, but there is a high possibility of a problem in the future, so preventive maintenance was carried out. I was able to confirm it.

As described above, the remaining life of the decoder board can be predicted through the calculation of the remaining life of the three signal processing modules constituting the decoder board.

Although an embodiment of the present invention has been described with reference to the accompanying drawings, it is only illustrative, and those of ordinary skill in the art will understand that various modifications and other equivalent embodiments are possible therefrom. will be. Therefore, the true scope of protection of the present invention should be determined only by the appended claims.

100: Automatic train control device decoder board component remaining life check system
200: train control signal generator 210: first and second function generator
220: control signal generation unit 221: function generator protection unit
222: voltage amplification unit 223: current amplification unit
224: noise removal unit 230: output control unit
240: wired connection connector 300: board connector
310: waveform output connector 400: waveform output
410: board analyzer connector 500: board analyzer
510: receiving or not determining unit 520: minimum receiving voltage measuring unit
530: abnormality determination unit 540: remaining life calculation unit
600: control computer

Claims (7)

The first and second function generators 210 that generate and modulate one of three carrier frequencies used in an automatic train control system (ATC) and one of the eight speed codes to generate different main and sub signals, respectively. Wow, a control signal generator 220 that generates a ground train control signal by synthesizing the main signal and the sub signal generated by the first and second function generators 210, and the control signal generator 220 Train control signal generator 200 consisting of an output control unit 230 for adjusting the output voltage of the ground train control signal;
A decoder board electrically connected to a board connector 300 to receive the ground train control signal and demodulate a speed code;
A wired connection connector 240 connecting the train control signal generator 200 and the board connector 300 so that the ground train control signal is transmitted to the decoder board;
A waveform output unit 400 connected to the board connector 300 and the waveform output connector 310 to output a waveform of the speed code demodulated by the decoder board for each carrier frequency;
A reception determination unit 510 that analyzes the waveform of the speed code output from the waveform output unit 400 to determine whether a ground train control signal of the decoder board is received by increasing the voltage of the output control unit by a predetermined voltage, and a ground train A minimum received voltage measurement unit 520 that measures the maximum and minimum received voltage for each carrier frequency of the decoder board for the control signal, and the minimum received voltage value and the preset maximum and minimum received voltage value of the decoder board. An abnormality determination unit 530 that determines whether there is an abnormality, and the remaining life of the signal processing module constituting the decoder board by making the percentage increase of the minimum received voltage for each carrier frequency based on a preset minimum minimum received voltage. A board analyzer 500 configured with a remaining life calculation unit 540 for calculating a;
A board analyzer connector 410 connecting the waveform output device 400 and the board analyzer 500; And
It is connected to the train control signal generator 200, the waveform output unit 400, and the board analyzer 500 to instruct the train control signal generator 200 to generate a ground train control signal, and the waveform of the waveform output unit 400 A control computer 600 that receives the data and the analysis result data of the board analyzer 500, stores the data in the data storage unit, and outputs it to a monitor, and transmits arbitrarily generated ground train control signals to the decoder board of the automatic train control device. By analyzing the waveform of the speed code that has been transmitted and demodulated in the decoder board and converted into a digital signal, it determines whether or not to receive the ground train control signal of the decoder board, determines whether the decoder board is abnormal, and the remaining life of the signal processing module constituting the decoder board. Is configured to be able to calculate
The output control unit 230 is an electronic circuit composed of a variable resistor, an IC device, etc., and changes the resistance value of the variable resistor by a program stored in accordance with a command in the control computer 600 to change the output voltage of the ground train control signal. A system for checking the remaining life of parts of an automatic train control device decoder board, characterized in that it is configured to be adjustable. The method of claim 1,
The control signal generator 220 is installed at an input terminal receiving the main signal and the sub signal to protect a function generator, and a main signal passing through the function generator protection unit 221 It is installed at the output terminal of the voltage amplifying unit 222 and the current amplifying unit 223 and the current amplifying unit 223 to amplify the waveform of the ground train control signal synthesized as a sub-signal to remove noise from the ground train control signal. A system for checking the remaining life of a part of an automatic train control device decoder board, comprising a noise removing unit 224 that uniformizes the waveform of the ground train control signal. delete The method of claim 1,
The wired connection connector 240 is configured to directly transmit the ground train control signal to the decoder board by wire. The method of claim 1,
The remaining life calculation unit 540 percentizes the increase rate of the minimum received voltage for each carrier frequency of the ground train control signal in a range from 0 to 100% based on the minimum minimum received voltage of the previously set ground train control signal. Thus, the remaining life of the decoder board component of the automatic train control device, characterized in that the remaining life of the signal processing module constituting the decoder board can be calculated. a) mounting the decoder board for the lifetime calculation on the board connector 300, and inputting the serial number of the decoder board to the control computer 600;
b) generating a ground train control signal by commanding the train control signal generator 200 with the control computer 600;
c) transmitting the ground train control signal to a decoder board mounted on the board connector 300 after adjusting the output voltage of the ground train control signal in the output controller 230;
d) outputting a waveform for each carrier frequency of the speed code demodulated in a decoder board and converted into a digital signal, and transmitting the output to the board analyzer 500;
e) the step of determining whether the reception status determination unit 510 of the board analyzer 500 analyzes the waveform of the speed code to determine whether the decoder board receives the ground train control signal;
f) measuring the limit minimum received voltage for each carrier frequency of the decoder board for the ground train control signal in the lowest received voltage measurement unit 520;
g) determining whether or not the decoder board is abnormal by comparing the threshold minimum received voltage value with a preset maximum minimum received voltage value by the abnormality determination unit 530 of the board analyzer 500;
h) calculating, by the residual life calculation unit 540, a residual life of a signal processing module constituting a decoder board by percentageing an increase rate of the minimum received voltage for each carrier frequency based on a preset minimum minimum received voltage;
i) transmitting the waveform data of the waveform output unit 400 and the analysis data of the board analyzer 500 to the control computer 600; And
j) the analysis data is stored in a data storage unit, and output to a monitor to inform the user of the test result; and a method for managing a decoder board using a system for checking the remaining life of the decoder board component of the automatic train control device. The method of claim 6,
Step j) is a step of outputting the present and past data informing the user by outputting the data obtained by comparing and analyzing the current analysis result data and the past analysis result data; and a decoder using a system for checking the remaining life of the decoder board component. Board management method.

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