KR100598479B1 - TWICE device - Google Patents

Abstract

The present invention adds a function to display the information processing state and its own operation state to the Train to Wayside Communication (hereinafter referred to as TWC) device, and program operation and communication failure, not a mechanical failure of the TWC device itself. By initializing work automatically when it occurs, it is possible to shorten the action time in case of failure.

In the present invention, when the train enters the station yard, when the TWC device receives the information transmitted from the train through the roof coil on the ground information of the train transmitted from the train, that is, train number, train destination, train schedule, zero speed It is characterized by displaying it on the information display device of the train so that it can be seen with the naked eye.

In addition, if there is no problem in the function of the TWC device itself, even if a communication error occurs, it is applicable only to the currently entered train and automatically operates normally without resetting at the next train entry.

In addition, by connecting the TWC device with a PC (Persnal Computer) and other information recording devices, it is possible to record information input and output to and from the TWC device, and to connect the information received from the train with other recording devices. By accepting the onboard information of trains entering the section and recording the information, it is possible to check the TWC system and the abnormality of the site quickly and at the same time, and to troubleshoot the TWC device and the external device when connecting to the external device. It is characterized by a quick search.

TWC, signal level detector, main processor, monitor, watchdog, CPU, display

Description

TWC Apparatus

1 is a basic block diagram to which the TWC apparatus of the present invention is applied

2 is a basic block diagram of a conventional TWC apparatus

Figure 3 is a detailed block diagram of the train stop position detection unit of the conventional TWC device

4 is a detailed block diagram of a frequency converter of a conventional TWC device;

5 is a detailed block diagram of a monitoring unit of a conventional TWC device;

6 is a detailed block diagram of the TWC apparatus of the present application

7 is a detailed block diagram of a signal level detector of a TWC device of the present application

8 is a detailed block diagram of the main processing unit of the TWC apparatus of the present application

9 is a detailed block diagram of the monitoring unit of the TWC apparatus of the present application

10 is a flowchart illustrating a watch dog operation of the TWC device of the present application.

<Description of reference numerals for main parts of the drawings>

10: TWC signal waveform 20: train

30: amplitude modulated wave (AM wave) detection signal waveform 40 ~ 90: loop coil

100: train stop position detection unit

111, 121: impedance matching unit 112, 114: amplifying unit

118, 128: comparison circuit 120, 130: level detection relay

122: amplifier 123: filter circuit

124: amplifier 125: full-wave rectifier circuit

126: filter 127: band pass filter (BPF) circuit

128: comparison circuit 129: rectifier circuit and amplifier

130: level detection relay

200: frequency converter

211 amplifying unit 212 modulator

213 filter unit 214 adjustment (ATT) unit

215: oscillation unit 216: amplification stage

219: insulation 220: speed converter

221: input buffer stage 222: demodulator

223: condition processing unit 224: door (DOOR) relay

300: monitoring unit

311: CPU (CPU) 312: I / O buffer

313: input / output buffer 314: DMA (direct memory access) controller

315: RAM 316: ROM

317: HDLC (high level data link controller) 318: LSI (large scale integrated circuit) for modem

319: control information output unit

400: signal level detector

500: main processing unit 600: monitoring unit

The present invention is applied to the ground equipment of the ATC (Automatic Train Control) / ATO (Automatic Train Operation) device which is used to automatically control the speed and operation of the train among the signal security facilities of railways and subways. The present invention relates to a device belonging to a Train to Wayside Communication (hereinafter referred to as TWC).

The present invention sends the train's own train number, destination and direction to the information transmitted from the train in order to enable the train to automatically and safely operate so that the train can know the information on the ground. The present invention relates to a train automatic driving control method and apparatus for displaying the current speed of a train and displaying the trained amount of the train to enable automatic operation of the train.

In general, the signal fields related to the operation of trains can be largely divided into onboard systems and ground systems.

Among them, the ground system is composed of on-site signaling device, reverse control device, and train operation control device.

The reverse control device is a linkage device that constitutes the course of the train by determining in advance whether the state of the part to be trained is normal, and the device status of the site and information about the train when entering the train as a comprehensive control device It is composed of an interface device that raises, and an ATC / ATO device for sending signals such as driving speed and stop to a running train and transmitting and receiving information with the train.

As such, the signal system of the train is composed of various devices, so that the safe operation of the train can be ensured only when each device is operated in harmony with each other.

Therefore, if any one of the devices that make up the signal system fails or malfunctions, the operation of the signal system will be immediately troubled. Therefore, the safe operation of the train or the smooth transportation of passengers will be severely disrupted. The speed and accuracy of the life of the world will lose its light.

Therefore, signaling system must not tolerate minor failures or malfunctions, but must ensure high safety and reliability of operation.

TWC device is a device that transmits and receives the information of trains received between on-board device and ground device among these signal systems. Refers to a device that transmits information to external equipment.

When the train is in operation, the trains exchange information about various trains, such as the speed of the train, the opening and closing of the train, and the stop time, through the ATC / ATO equipment. If there is a problem with the TWC system that functions like this, only the location of the train can be determined, but the information of the train number and destination cannot be known. You must In this case, as the checking and judgment time of the engineer becomes longer, the arrival and departure of trains are greatly delayed, which makes it impossible to operate the train quickly. However, if there is an error in the judge's judgment, the safe operation of the train is a serious threat. Will receive.

The TWC system currently used to maintain the safe operation of trains measures the minimum operation level, reception input level, and frequency shifting modulation wave level of the level detection relay. It resets the reset switch and checks the train information from the station monitoring system.

This is because, in fact, the TWC device cannot check the information on the vehicle and determine whether the equipment is normal or not. Also, since there is no display function to display the status of the TWC device externally, the status of the TWC device is further known from the outside. It becomes impossible.

The conventional configuration of the TWC device having the function as described above is a TWC signal transmitted from the whole (front part) of the train, including information such as train number, train destination, zero-feed, as shown in Figure 2, and the TWC signal and AND (AND) A train stop position detecting unit (100) for receiving an amplitude modulated wave (AM wave) detection signal transmitted from the rear (back) of the train to determine whether the train has stopped at a normal position by combining;

The TWC signal (for example, 40250 Hz, 40050 Hz) input from the train stop position detecting unit 100 is demodulated using a specified frequency, and the frequency deviation wave (FS wave) of the difference is output to the monitoring unit 300 and monitored. After receiving the TWC information analyzed by the unit 300, the serial information is converted into parallel information to output information such as train number, train destination, etc. to the external equipment, and the relay information within itself to the external device (ATC). A frequency converter 200 for outputting;

The modulation frequency output from the frequency converter 200 is demodulated by a modem LSI (large scale integrated circuit), and the information is judged whether or not the data received from the central processing unit in the monitor 300 is correct. If it is determined that the data to the monitoring unit 300 for outputting the received data to the frequency converter 200 in parallel by 8 bits (bit); Consists of.

3 to 5 are detailed block diagrams of the respective components of FIG. 2, FIG. 3 is a detailed block diagram of the train stop position detecting unit 100, FIG. 4 is a detailed block diagram of the frequency converter 200, and FIG. 5 is a detailed block diagram of the monitoring unit 300.

Referring to the train stop position detecting unit 100 on the basis of Figure 3,

First, when all of the train signals are received by the train stop position detecting unit 100, the signals are electrically insulated from the impedance matching units 111 and 121 of the train stop position detecting unit 100, and impedance matching is performed. At this time, the signals input to the impedance matching unit are two kinds of signals. One of the two types of input signals is input to the first impedance matching unit 111 as the full signal of the train, and the other is input to the second impedance matching unit 121 as the rear signal of the train.

The flow of two signals inputted to the impedance matching units 111 and 121 and processed through the signal conversion process and the comparison circuits 118 and 128 to the level detection relays 120 and 130 are the same in this case, because the process is the same. I will explain it in a bundle.

When the amplitude modulation wave (AM wave) detection signal transmitted from the rear of the train is input to the train stop position detecting unit 100, impedance matching is performed through the insulation transformer and the impedance matching unit 121, and the impedance matching unit 121 is connected. The small signal is passed through the amplification unit 122, amplified, and then input to the filter circuit 123 to obtain a signal of a frequency band desired by a user. When noise is removed from the filter circuit 123 and only a desired frequency is selected and output, the signal is input to the amplifier 124 for level amplification. The signal amplified by the amplification unit is rectified by the full-wave rectifying circuit 125 and then input to the filter circuit 126 to remove the noise once again and the filtered signal from the filter circuit is a band pass filter (BPF). The circuit 127 passes only the set frequency (eg 78.6Hz). Meanwhile, the signal passing through the band pass filter (BPF) circuit is input to the comparison circuit 128. The comparison circuit 128 receives a clock pulse from the frequency converter, compares a signal input at the field with the same voltage as a reference voltage, and outputs the signal if the comparison voltage is equal to or greater than the reference voltage. After the output is controlled in such a manner that no output is performed, the level detection relay 130 is operated again through the rectifying circuit and the amplifier 129.

In addition, the TWC signal transmitted from all of the train is connected to the impedance matching unit 111 through the loop coil of the field. The signal input to the impedance matching unit 111 is amplified through the amplifier 112, the signal is amplified, and after passing through the amplifier 114 again to amplify to the required level after removing the noise from the filter 113 circuit and then frequency It is input to the conversion unit 200.

The train stop position detecting unit 100 is composed of the same two circuits in one card, characterized in that the LED (LED) displayed according to the direction of the train is different.

Next, the frequency converter 200 will be described based on FIG. 4.

The TWC signal frequencies (for example, 40250 Hz and 40050 Hz) input from the train stop position detecting unit 100 are amplified by the amplifier 211 and output to the modulator 212. In addition, an arbitrary oscillation frequency generated by the oscillator 215 is output to the modulator 212 via the amplifier stage 216, and the modulator 212 receives the signals input from the amplifier 211 and the amplifier stage 216. After receiving the input signal and modulating it to an arbitrary frequency, it is output to the filter unit 213. The filter unit 213 filters the signal input from the modulator, and then outputs the same signal to the adjustment (ATT) unit 214, and the adjustment (ATT) unit 214 adjusts the magnitude of the input value. And outputs to the monitoring unit 300.

The signal input to the monitoring unit 300 is input to the buffer 221 stage of the frequency converter 200 as a logic level of "1" or "0" after checking for error in transmission, etc. In order to output the input information to the outside while passing through the grandfather 222 and the speed converter 220 is converted from a serial type to a parallel type. Subsequently, the signal transmits information to an external device through an insulation unit 219 for increasing the level and insulating the external device to connect to an external device, while the condition processing unit 223 is a speed converter 220. After detecting the zero speed condition of the train in response to the information, and if the conditions are met, the door (DOOR) relay 224 is operated to transmit the door (DOOR) information to the ATC device.

Looking at the process of checking for errors in the monitoring unit 300 based on Figure 5,

The TWC signal input from the train stop position detecting unit 100 to the monitoring unit 300 is demodulated based on the LSI (large-scale integrated circuit) 318 for the modem and is referred to as a high level data link controller (HDLC). Inputted to 317). Subsequently, when the HDLC enters the reception state, the input data is transmitted to the RAM 315 through the DMA controller 314. When the reception of one frame is completed, the HDLC 317 outputs the reception termination priority RX INT to the CPU 311 through the input / output buffer 312. Next, the CPU 311 determines whether the received data is correct or not by the program stored in the ROM 316 by reading the result register of the HDLC. While outputting the received data in parallel to the frequency converter 200 via the control unit, the control condition is outputted through the control information output unit 319, and then the next reception operation is continued.

As described above, the TWC device plays a key role in a system that automatically operates a train by combining a variety of units (UNIT) to create a system and transmitting information to an external device through the system.

However, existing TWC devices are manufactured based on analog circuits, and also consist of a combination of many kinds of passive elements (resistors, capacitors, coils) and active elements, making it difficult to understand complicated electronic circuits and diarrhea. Even if the circuit is understood, it has a problem that it takes a long time to find and solve the fault in a complex circuit.

In addition, the information processing state cannot be checked in the conventional TWC device, and when the state of the TWC device itself is abnormal, the lamp displayed on the front of the TWC device is operated to indicate an abnormality of the device. There was a problem that a failure could not be recognized.

In the current TWC device, when the signal sent from the vehicle is received by the TWC device and the result of the communication error test is recognized as an error, the TWC device recognizes the error by itself, turns on the error display lamp, and stops the operation. Only after pressing the reset switch again there was a problem that the operation.

In addition, since the TWC device is connected to the site and the information is received from the train, there is a problem that it is not easy to check the presence or absence of an error or to know the point where an error occurs even if an error occurs unless a person keeps watching.

The present invention adds a function of displaying the information processing state and its own operation state to the TWC device, and if the failure occurs in the program operation and communication failure, not the machine failure of the TWC device itself, the time to take action if a failure occurs Not only can it be shortened, it is conceived with the idea that even beginners can easily deal with obstacles.

In order to solve the above problems, the first object of the present invention is to provide information of a train transmitted from a train when the TWC device receives the information transmitted from the train when the train enters a station yard. Information on train information, train destinations, train schedules, train speeds, zero speeds, etc. The purpose of the present invention is to display information transmitted from the vehicle such as the ATO operation state by using a liquid crystal display (hereinafter referred to as "LCD").

In addition, the second object of the present invention is that if there is no problem in the function of the TWC device itself, even if a communication error occurs only to the currently entered trains, and when the next train enters again to operate normally again without having to reset itself.

The third object of the present invention is to connect the TWC device with a PC (Persnal Computer) and other information recording device to record the information input and output to the TWC device, and the information received from the train and other recording device By allowing the TWC device to receive the onboard information of the train entering its section and recording the information, it is possible to check the TWC device and site abnormalities as soon as possible and at the same time to connect the TWC to external devices. The purpose is to find fault spots of devices and external devices quickly.

The configuration of the present invention for achieving the above object will be described in detail with reference to FIGS. 1 and 6 to 10.

1 is a basic operation block diagram showing a usage environment in which the present invention operates, FIG. 6 is a detailed block diagram of a TWC device of the present invention, and FIGS. 7 to 9 are detailed block diagrams of the respective components of FIG. 7 is a detailed block diagram of the signal level detector 400, FIG. 8 is a detailed block diagram of the main processor 500, and FIG. 9 is a detailed block diagram of the monitor 600.

This TWC device is a device that enables automatic train operation by receiving information transmitted from the vehicle and transmitting information to the command room and other devices on the ground. Referring to FIG. 1, the basic situation in which the TWC device is installed and operated will be described as follows. same.

This TWC apparatus is provided for each station and receives information 10 and 30 transmitted from the train by the loop coils 40 to 90 installed in the station premises. Therefore, when the train enters the station yard, the information transmitted from the onboard vehicle through the onboard antenna is received by the ground loop coils 40 to 90 installed in the section, and the information on the onboard vehicle is received. It is sent to the TWC device via (L1-L6). The TWC device is a TWC signal waveform 10 transmitted from all of the trains when the train stops at a designated position according to the train amount of the train 20 in the loop coils 40 to 90 shown in FIG. The amplitude modulated wave (AM wave) detection signal 30 to be transmitted is input to the signal level detection unit 400 of the TWC apparatus.

The configuration of the TWC device according to the present invention operating in the above environment,

Receives the amplitude modulated wave (AM wave) detection signal 30 transmitted from the rear of the train to detect the exact stop of the train, and when the exact stop is confirmed, receives the TWC signal 10 received from all of the trains. A signal level detector 400 which filters the noise to remove noise and then amplifies and outputs the signal;

The signal output from the signal level detecting unit 400 is modulated to a desired frequency, and the demodulated signal is demodulated by an LSI for a modem (MODEM: modulator). The main processing unit transmits the information to the device and the central processing unit checks the information of the HDLC to determine whether the information is correct, and if the information is correct, transmits the information to the external device and transmits the information to the monitoring unit 600 at the same time. 500;

Receiving the information output from the main processing unit 500 to check the received information and to display the user to determine whether the abnormality of the device; Characterized by loads.

In addition, the signal level detection unit 400,

An impedance matching unit 411 configured to receive signals transmitted from all and rear parts of the train and perform electrical insulation and impedance matching on the signals;

A central processing unit (412) for adjusting a frequency level which is partially amplified by the impedance matching unit to a level having a required size;

A parallel resonator 421 which receives the signal output from the central processing unit 412 and filters the signal into a bandwidth having a required frequency (for example, 40.2 kHz);

An amplifier 422 for amplifying the attenuated signal while passing through the parallel resonator 421;

After filtering (serial resonance) the signal output from the amplification unit, the TWC signal 10 transmitted from all the trains of the frequency shifted (FSK) signal (all train signals: 40.25 / 40.05KHz) of the series is the main processing unit. An amplitude modulated wave (AM wave) signal 30, which is sent to 500, and is sent to the rectifier 431 for operating the level detection relays 482 and 483;

A rectifier 431 for receiving a part of the frequency shifting signal (FSK) and full-wave rectifying at a frequency specified by a user (for example, 78.6 Hz);

An amplifying unit 432 for amplifying a signal rectified by the rectifying unit 431;

A band pass filter (BPF) circuit unit 433 which receives the signal output from the amplifier and passes only a preset frequency (eg, 78.6 Hz);

The modulated wave signal extracted while passing through the BPF circuit unit 433 is compared with a preset reference voltage (eg, 1.8 V), and is output to the central processing unit 473 when the input signal becomes higher than the reference voltage. A voltage comparator 471;

A central processing unit 473 for receiving a signal output from the voltage comparing unit and determining whether the signal is normal;

A decode unit 474 for decoding a programmed signal after determining whether or not normal operation is performed in the CPU 473;

When the decoded signal is normal, the level detection relays 482 and 483 are driven. When the decoded signal is abnormal, the communication unit 474 is reset by the monitoring timer unit 491 to prevent the central processing unit from malfunctioning. A level detecting relay driving circuit portion 481;

When the central processing unit operates normally, the status and operation of the central processing unit are displayed so that the user can check the information. In case of abnormality, the central processing unit displays communication information generated by the connection with the external device. A display portion 493 which displays the presence or absence of abnormality and easily confirms the location of the failure; Characterized in that configured.

The main processing unit 500,

An amplifier 511 for amplifying the signal received by the signal level detector 400 to an appropriate size;

A demodulator 512 for receiving a signal supplied from the PLL unit and demodulating the signal amplified by the amplifier at a required frequency (for example, 2025 Hz / 20225 Hz);

An amplifier 513 for amplifying the demodulated signal output from the demodulator;

A phase locked loop (PLL) unit 514 for supplying a demodulation frequency for demodulating the frequency in the demodulator 512;

Receiving the signal amplified by the amplification unit 513 converts the signal input in the serial method to the parallel bus (Parallel BUS) method to transmit data to the central processing unit, while the parallel information to send the information on the ground in parallel A modem unit 521 for converting a bus signal into a serial method and outputting the signal to the amplifier 522;

An amplifying unit 522 for receiving and amplifying a signal output from the modem unit and then transmitting the amplified signal to a train;

Examine whether the information received from the modem unit 521 is correct or incorrect according to the pre-programmed order. If the information is correct, the information transmitted from the train is analyzed to determine the train number, train line, zero speed. While checking the conditions and outputting them to the parallel output unit, it is determined whether the door relay 551 is to be operated by the TWC signal 10 transmitted from the train. A central processing unit 531 which transmits the information to the parallel output unit 541 in order to output the information to an external device;

A parallel output unit 541 for transmitting information such as train number, train line, zero feed, etc. provided from the central processing unit to an external device (eg, LLS, Local Data Transmission System (LDTS));

An error monitoring unit 532 which determines whether the signal output from the central processing unit 531 is normal, controls the output, and monitors the operation of the door relay;

A door relay and a driver 551 which receives the signal output from the error monitoring unit and controls the door of the train when the information transmitted from the train is normal and the train stops in the correct position; Characterized in that configured.

The monitoring unit 600,

A display unit 610 for displaying the information from the central processing unit by using the LCD to analyze and confirm the information;

A serial communication unit 620 for storing the information to an external data storage device;

An input / output unit 630 for transmitting and receiving information in the field;

A power supply 640 for supplying power to the device; Characterized in that configured.

Referring to the operation of the TWC device of the present invention having the configuration as described above are as follows.

When no train is entering, the TWC unit waits, displaying the previous state and the state of the current CPU. When the train enters, the signal transmitted from the train is received by the loop coil, and the information is received by the receiver of the signal level detection unit 400 of the TWC device through the ground rail.

The signal received by the signal level detecting unit 400 performs electrical insulation and impedance matching in the impedance matching unit 411 in the signal level detecting unit, and the signal is input to the central processing unit 412 to partially over-amplify the frequency level. After adjusting to a level of a required size, it is output to the parallel resonator 421. The parallel resonator 421 receiving the signal passing through the impedance matching unit 411 and the central processing unit 412 filters the signal to a bandwidth having a required frequency (for example, 40.2 Khz). Subsequently, the signal attenuated by the parallel resonator 421 is sent to the amplifier 422 and amplified, and then the amplified signal is sent to the serial resonator 423 and filtered (serial resonance). The series resonant signal from the series resonator 423 is a frequency shift (FSK) signal (all signals of the train: 40.25 / 40.05 KHz), and the TWC signal 10 transmitted from all of the trains is the main processor 500. Amplitude modulated wave (AM wave) signal 30, which is transmitted to the rear side, is sent to the rectifier 431 to operate the level detection relays 482 and 483.

On the other hand, a portion of the frequency shifting signal (FSK) is input to the rectifying unit 431, and full-wave rectified at a frequency specified by the user (for example, 78.6 Hz), the full-wave rectified signal from the rectifying unit 431 is amplified by the amplifier 432 Next, only the frequency (eg, 78.6 Hz) set by the band pass filter (BPF) circuit part 433 is passed, and the modulated wave signal extracted while passing through the band pass filter (BPF) circuit part 433 is received by the voltage comparator 471. Compared to the set reference voltage (for example, 1.8V), when the input signal becomes higher than the reference voltage, it is output to the CPU 473, and the signal input to the CPU 473 is sent to the CPU 473. It is determined whether or not normal. After determining whether the CPU 473 is normal, the programmed signal is decoded by the decoder 474 and sent to the level detection relay driver circuit 481. When the decoded signal is normal, the level detection relay Drive (482,483). In addition, when the decoded signal is abnormal, the monitoring timer unit 491 causes the communication unit 474 to be reset, thereby preventing the central processing unit from malfunctioning.

In addition, when the CPU operates normally, the status and operation of the CPU are displayed on the display unit 493 so that the user can check it, and when the device malfunctions, the communication information generated by the connection with the external device is displayed. Therefore, it is easy to determine whether there is any abnormality and to confirm the point of failure.

The signal level detection unit 400 described above allows two receiving circuits in one card to operate until the front end of the central processing unit 473. This serves to receive all signals and rear signals, and to allow the same device to be used even when the traveling direction is changed.

The signal output from the signal level detector is input to the main processor 500. When the signal received from the signal level detecting unit 400 to the main processing unit 500 is amplified to an appropriate size by the amplifying unit 511 of the input terminal of the main processing unit, and output to the demodulating unit 512, the demodulating unit 512. In step A, demodulate the frequency of the amplified signal to a required frequency (for example, 2025 Hz / 20225 Hz). The PLL unit 514 generates a demodulation frequency for demodulation in the demodulator 512 and supplies it to the demodulator 512. (For example, if the input frequency is 40250HZ and the demodulation frequency generated by the phase synchronization loop (PLL) unit 514 is 38025 Hz, the output frequency of the demodulator 512 is the input frequency and the phase synchronization loop (PLL) unit 514. A frequency of 2225 Hz, which is the difference of the generated frequencies, is output.)

The signal demodulated by the demodulator 512 is amplified by the amplifier 513 to the required level by the modem unit 521 and output to the modem unit 521. The modem unit 521 uses the serial method. Converts the signal inputted into the parallel bus method to transmit data to the central processing unit, and in order to send the information on the ground to the modem, the modem unit 521 converts the parallel bus signal into the serial method and amplifies the unit 522. To the train.

The central processing unit 531, which has received the information from the modem unit 521, examines whether the inputted information is correct or not according to a pre-programmed order, and if the information is correct, analyzes the information transmitted from the train to determine the train number, Check train route, zero speed conditions, etc. Also, it is determined whether to operate the door relay 551 by the TWC signal 10 transmitted from the train, and if the condition is correct, the door relay is operated, otherwise the door relay is not operated. In addition, in order to output the information to the external device transmits the information to the parallel output unit 541. The parallel output unit 541 transmits information such as train number, train line, zero feed, etc. provided from the central processing unit to external devices (eg, LLS and LDTS).

The error monitoring unit 532 determines whether the central processing unit 531 is normal, controls the output, monitors the operation of the door relay, and when the information transmitted from the train is normal and the train stops at the right position, the train The function of driving the door relay to operate the door control relay of the door relay and the driving unit 551 is performed.

Next, the information signal output from the main processing unit and input to the monitoring unit 600 is displayed on the display unit 610 using the LCD to enable the user to analyze and confirm the information coming into the central processing unit. After being stored in an external data storage device, information transmission and reception to the site is made through the input and output unit 630. In addition, the power used for the device is supplied to the main power supply via the power supply unit 640. The display unit 610 displays various information such as a train number, a train line, a zero speed, a train stop state, and information including direct data with the train.

In the signal level detection unit 400, the installation position is different according to the train arrangement amount because the installation position is different according to the train arrangement amount of the loop coil installed in the field. In this case, three cards can be mounted to process three types of train information, and when three cards are mounted, three types of trains can be divided to receive train information. However, the installation of these cards is not limited to just three, and can be changed as many as the situation of the site and train. In addition, each receiver is equipped with a train entrance indicator lamp to check whether the train is in front, and you can check the receiver of the train by checking the lamp.

In addition, the main processing unit 500 receives the information received from the signal level detection unit 400, decodes the received signal and converts the decoded signal from serial to parallel to send to the external equipment of the signal machine room to send the information sent from the train Send information to the station control relay, station information transmission device and external indicators to determine the stop time of the train, to handle the course in the direction of the train, and to process the information so that the information of the train can be checked with the naked eye. The fault can be found to remove the obstacle, and the train's door relay is activated by automatically detecting the stop of the train and automatically opening and closing the door.

Fig. 10 shows an algorithm of a program mounted on the CPU 473.

Starting the program (700);

Initializing various hardware and variables (710);

Monitoring 720 the system to determine if there is an error;

Determining (730) an entry of a train if there is no error as a result of the monitoring of the system;

If it is determined that the train has been entered, displaying the train on the LCD 740;

Indicating (750) the entry of the train and monitoring the status of the system;

Interpreting (760) a communication state and a code when the monitoring result of the system is good;

Determining (770) whether to end the program after interpreting the code;

Terminating (790) the program if there is no need to continue the program;

If an error occurs as a result of the monitoring of the system, processing the error (780); Consists of.

In detail the operation of this program,

First, when the power is turned on, the CPU 473 starts to drive the program, and initializes various hardware and variables (step 700). (Step 710)

Subsequently, the entire situation of the system is monitored (internal database, time, etc.) to determine whether there is an error, and if there is no error as a result of the monitoring of the system, the process moves to the step of judging the entry of the train, and if there is an error, the process moves to the step of processing the error. . (720 steps)

In step 720, if there is no error, it is determined whether the train enters, and if the train enters, the display moves on to the LCD. If the train does not enter, the system moves to the system monitoring step again to continue monitoring the system. (Step 730)

When the next train enters, the train's entry status is displayed on the LCD (step 740). The system monitors the system again and checks whether the system is abnormal. If an error occurs, the process moves to the step of processing the error. If the condition is good, move on to interpreting the communication status and code. (Step 750)

If the monitoring state of the system in step 750 is satisfactory, the system interprets the communication state and code (step 760), determines whether to terminate the program, and if it is necessary to continue the program, it moves to the monitoring stage of the system and proceeds with the program. If not necessary, exit the program. (770 steps)

If an error is found in steps 720 and 750, the error is processed and the program is started again. (Step 780)

Through this process, the central processing unit 473 checks whether the system is abnormal by driving the program.

First, the present invention displays the train number, the destination, the train stop, the state of communication with the train, the amount of trains, the door opening and closing state that are not in the conventional TWC device so that the communication state with the train at a glance In addition, when a failure occurs, it is possible to check the communication status and information input / output status on the external display device so that the cause of the failure can be easily identified and the failure site can be easily found and easily maintained.

Second, in the conventional TWC device, the cable is complicated and takes much time to manufacture by connecting the receiver and the main processing unit by directly connecting the wires, and there is a concern that the cable may be broken when the device is separated for repair. There are many inconveniences such as the present invention, but according to the present invention, the manufacturing time is shortened and the arrangement of the cables becomes easy, so that the situation of the apparatus can be visually checked, and thus the maintenance is easier.

Third, the conventional TWC device had a problem that an error (NG) state occurs when an error occurs during its own data analysis. However, in the present invention, the present invention corrects this to create a watch dog state when an error occurs. Data is erased and new data can be received, making the device more efficient.

Claims (7)

Receives an amplitude modulated wave (AM wave) detection signal 30 transmitted from the rear of the train to detect the exact stop of the train, and when the exact stop is confirmed, the TWC signal received from all of the trains ( 10) a signal level detection unit 400 for receiving and filtering the signal, removing noise, and then amplifying and outputting the signal; The signal output from the signal level detecting unit 400 is modulated to a desired frequency, and the demodulated signal is demodulated by a modem LSI (large scale integrated circuit), and then the demodulated signal is HDLC (high level data link controller). It receives information from and transmits the information to the central processing unit. The central processing unit checks the information of the HDLC (high level data link controller) to determine whether the information is correct, and if the information is correct, transmits the information to the external device and monitors it. A main processing unit 500 for transmitting information to the unit 600; Receiving the information output from the main processing unit 500 to check the received information and to display the user to determine whether the abnormality of the device; Tied You device characterized in that the luggage. The method of claim 1, The signal level detection unit 400, An impedance matching unit 411 for receiving signals transmitted from the front and rear parts of the train and for electrically insulating and impedance matching them; A central processing unit (412) for adjusting a frequency level which is partially amplified by the impedance matching unit to a level having a required size; A parallel resonator 421 which receives the signal output from the central processing unit 412 and filters the signal into a bandwidth having a required frequency (for example, 40.2 kHz); An amplifier 422 for amplifying the attenuated signal while passing through the parallel resonator 421; After filtering (serial resonance) the signal output from the amplifying unit, a frequency shifted (FSK) signal (TWC) signal (TWC) signal transmitted from all the trains of the train (all signals of the train: 40.25 / 40.05KHz) ( 10) is sent to the main processing unit 500, and the amplitude modulated wave (AM wave) signal 30 transmitted from the rear part and the series resonator 423 to send to the rectifier 431 to operate the level detection relays (482,483) ; A rectifier 431 for receiving a part of the frequency shifting signal (FSK) and full-wave rectifying at a frequency specified by a user (for example, 78.6 Hz); An amplifying unit 432 for amplifying a signal rectified by the rectifying unit 431; A band pass filter (BPF) circuit unit 433 which receives the signal output from the amplifier and passes only a preset frequency (eg, 78.6 Hz); The modulated wave signal extracted while passing through the BPF circuit unit 433 is compared with a preset reference voltage (eg, 1.8 V), and is output to the central processing unit 473 when the input signal becomes higher than the reference voltage. A voltage comparator 471; A central processing unit 473 for receiving a signal output from the voltage comparing unit and determining whether the signal is normal; A decode unit 474 for decoding a programmed signal after determining whether or not normal operation is performed in the CPU 473; When the decoded signal is normal, the level detection relays 482 and 483 are driven. When the decoded signal is abnormal, the communication unit 474 is reset by the monitoring timer unit 491 to prevent the central processing unit from malfunctioning. A level detecting relay driving circuit portion 481; When the central processing unit operates normally, the status and operation of the central processing unit are displayed so that the user can check the information. In case of abnormality, the central processing unit displays communication information generated by the connection with the external device. A display portion 493 which displays the presence or absence of abnormality and easily confirms the location of the failure; T-Dee device, characterized in that configured. The method of claim 1, The main processing unit 500, An amplifier 511 for amplifying the signal received by the signal level detector 400 to an appropriate size; A demodulator 512 for receiving a signal supplied from the PLL unit and demodulating the signal amplified by the amplifier at a required frequency (for example, 2025 Hz / 20225 Hz); An amplifier 513 for amplifying the demodulated signal output from the demodulator; A phase locked loop (PLL) unit 514 for supplying a demodulation frequency for demodulating the frequency in the demodulator 512; Receiving the signal amplified by the amplification unit 513 converts the signal input in the serial method to the parallel bus method to transmit the data to the central processing unit, while the information of the parallel bus method in order to send information on the ground A modem unit 521 which converts the signal in a serial manner and outputs the amplification unit 522; An amplifying unit 522 for receiving and amplifying a signal output from the modem unit and then transmitting the amplified signal to a train; The information received from the modem unit 521 is checked whether the information inputted by the pre-programmed sequence is correct or not. If the information is correct, the information transmitted from the train is analyzed and confirmed and output to the parallel output unit. It is determined whether to operate the door relay 551 by the TWC signal 10 transmitted from the train, and if the condition is correct, the door relay is operated and if not, the information is transmitted to the external device. A central processing unit (531) for transmitting information to the parallel output unit (541) for output; A parallel output unit 541 for transmitting information provided from the central processing unit to an external device; An error monitoring unit 532 which determines whether the central processing unit 531 is normal, controls the output, and monitors the operation of the door relay; A door relay and a driver 551 for controlling the door of the train when the information transmitted from the train is normal and the train stops in the correct position by receiving the signal output from the error monitoring unit; T-Dee device, characterized in that configured. The method of claim 1, The monitoring unit 600, A display unit 610 which displays the information by using an LCD to enable analysis and confirmation of information coming from the central processing unit; A serial communication unit 620 for storing the information to an external data storage device; An input / output unit 630 for transmitting and receiving information in the field; A power supply 640 for supplying power to the device; T-Dee device, characterized in that configured. The method of claim 1, The signal level detection unit 400, Up to the front end of the central processing unit 473, two receiving circuits are configured on the card to operate so that the entire signal and the rear signal can be received and the same device can be used even when the train travel direction is changed. A tea seed oil device characterized by the above-mentioned. The method of claim 2, The program mounted on the CPU 473 and operated is Starting the program (700); Initializing various hardware and variables (710); Monitoring 720 the system to determine if there is an error; Determining (730) an entry of a train if there is no error as a result of the monitoring of the system; If it is determined that the train has been entered, displaying the train on the LCD (740); Indicating (750) the entry of the train and monitoring the status of the system; Interpreting (760) a communication state and a code when the monitoring result of the system is good; Determining (770) whether to end the program after interpreting the code; Terminating (790) the program if there is no need to continue the program; If an error occurs as a result of the monitoring of the system, processing the error (780); T-Dee device, characterized in that configured. The method of claim 3, Information that is analyzed, confirmed, and processed by the central processing unit 531 and the parallel output unit 541 is T-Dee device characterized in that the train number, train line, zero speed conditions.

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