KR101988032B1 - The safety support system for worker at railroad - Google Patents

Abstract

The present invention relates to a safety alarm system for a track worker which prevents possibility of a safety accident in advance by generating a luminescent alarm or alarm sound that can be easily recognized by the worker when a railroad vehicle (motor car, etc.) approaches the worker during maintenance work on a track, or when the worker and an obstruction are separated by a certain distance by leaving work tools (the obstruction). According to the present invention, since a signal transmitted from the railroad vehicle is received through a communication alarm device possessed by the worker, possibility of a collision accident with the railway vehicle (motor car, etc.) of the worker on the track is reduced and evacuation time is ensured. In addition, occurrence of safety accidents is prevented in advance by lowering possibility of railway vehicle accidents caused by the work tools placed on the track.

Description

[0001] The present invention relates to a safety support system for a worker,

The present invention can be applied to a railway vehicle (motor car, etc.) during the maintenance work on the railway line of a worker or when the worker and the obstacle are separated from each other by a distance of a certain distance, And to prevent the possibility of occurrence of a safety accident in advance.

Railways (motor cars, etc.) are special means of transportation that allow passage over the railway. Existing railway lines are exposed to the external environment, and the railway load is periodically applied, resulting in aging, deformation, and breakage .

Therefore, the maintenance work for repairing the railway is carried out from time to time. The maintenance of the railway is directly related to the safe running of the railway, and the delay in operation on the railway causes the railway operation to be delayed. have.

Various devices for safe operation of the railway such as a signaling device, a line switching device, a track circuit device, an interlocking device and a crossing security device are installed in the vicinity of such a railway line. However, It is not installed to do, but it is only installed for safe running of railroad.

In such a work environment, an accident occurs in which a worker performs maintenance work on a track and then falls on a railroad to die.

On the other hand, even in the case of a subway where the track is hardly exposed to the outside, it is necessary to repair the line according to the operation of the vehicle.

Various techniques have been proposed so far to prevent collision between the railway and the worker, and a technique using an alarm system via wireless has been proposed.

Techniques such as the Korean Registered Utility Model No. 20-0219500 (entitled 'Train Access Warning System') have been developed.

The described railway approach alarm system is composed of a transmission device installed on a railway to transmit radio waves in the direction of the railway and a reception device attached to the safety belt of a worker or a safety belt so as to warn an operator when the radio wave is received have.

However, the conventional alarm system for line operators has the following problems.

First, there is an economical problem that a transmission apparatus for transmitting radio waves must be installed in each railway, which is expensive.

Secondly, the main work hours of subway or railway line work are focused on at night when it is not in operation. Workers enter workspace with work tools for line maintenance work. do.

However, due to the nature of the nighttime railway work, drowsiness is likely to occur and the concentration of the worker is likely to be lowered. Even after the work is actually finished, many work tools are left in the work space where maintenance work is performed.

When these working tools are left unattended on the railway, they can lead to serious accidents when entering railway or motorcycle.

Patent Document 1: Korean Patent Registration No. 20-0219500 (Publication Date: Apr. 04, 2001) Patent Document 2: Korean Patent Registration No. 10-1817529 (Publication Date: 2018.01.11) Patent Document 3: Korean Patent Laid-Open Publication No. 10-2010-0044339 (Published date: 2010.04.30)

In order to solve the above problems, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to reduce the possibility of a collision with a railway vehicle (motor car, etc.) And to provide an operator safety support system in a line that is configured to prevent an accident.

In addition, the present invention provides a method for preventing an accident of a vehicle caused by a working tool caused by leaving a work tool (obstacle) in a work space by mistake due to sleepiness, The object of the present invention is to propose a system for preventing work tool neglect.

It is another object of the present invention to provide a system configured to solve the problem of an increase in installation cost of the entire system due to a transmission apparatus mounted inside a railway vehicle (motor car, etc.) moving the railway.

In order to achieve the above object, the present invention provides a system for supporting worker safety in a line, comprising: a transmission device installed in a driver's seat of a railway vehicle entering a railway line and continuously transmitting an RF frequency at a predetermined transmission cycle; And a communication alarm device for an operator configured to receive a signal having a frequency output from the transmission device of the railway car and generate vibration or an alarm and display an entry of the railway vehicle on the LCD display device To provide a safe worker on the track and a system to prevent work tools from being neglected.

In addition, a transmitting device for a working tool for managing a fingerprint is arranged at the upper end of the fingerprint of the worker placed around the line or the line. When the start button of the button portion provided in the transmitting device for the working tool is pressed, Type communication alarm device 210 and the vest type communication alarm device 220. The operator's wrist communication alarm device 210 and the vest type communication alarm device 220 are connected to the RF wireless And transmits a response signal (ACK) to the transmitting device for the working tool automatically when receiving the signal, and the transmitting device for the working tool is connected to the wrist communication alarm device 210 of the operator or the vest type communication alarm device 220 ) Is set at a distance greater than a predetermined distance and the LED is not illuminated and the response signal (ACK) for the transmitted RF radio signal is not received.

In order to achieve the above object, according to the present invention, there is provided a system for supporting worker safety in a railway line, the railway railway system comprising: A loop detecting device for outputting a signal through a transmitting module when detecting an incoming railway vehicle; And a communication alarming device for workers configured to receive a signal having a frequency output from a transmission module included in the loop detection device, wherein vibration or an alarm is generated and contents of entry of a railway vehicle are displayed on an LCD display part The present invention provides a safety system for workers in the railway line and a system for preventing a work tool from being left unattended.

The loop detection device includes a plurality of loop coils installed to distinguish whether the railway vehicle enters or exits when entering the railway vehicle; A loop detection module installed in a safety zone of the line for receiving an electrical change induced by the vehicle from the loop coil to detect the presence or absence of the vehicle and the type of the vehicle; An originating module connected to the antenna so as to transmit a signal to the communication alarm device of the operator wirelessly when the signal is detected by the loop detecting module and receive an activation signal from the loop detecting module; And a battery for supplying driving power to the loop detecting module and the calling module.

A plurality of piezoelectric elements arranged in contact with the wheels of the railway vehicle on a line where the railway vehicle enters; Wherein the driving power source of the loop detection module and the transmission module is connected to a power storage unit of the power storage module, The power supply switching module is further comprised in the loop detection device so that the self-generated power supply and the commercial power supply of the battery are selectively supplied by the power supply switching method.

Wherein the power switching module includes: a first thyristor for connecting the commercial power to driving power of the loop detecting module and the calling module; A second thyristor for connecting the self power generation power source to the driving power source of the loop detection module and the transmission module; A commercial voltage detector that receives the commercial power and detects a voltage and a phase; An inverter for adjusting a voltage state of the self power generation power source; A self-generated voltage detector for detecting a voltage and a phase of the self-generated power supplied through the inverter; A first flip-flop IC having an inspection and analysis unit for receiving a commercial power output from the commercial voltage detector and analyzing a frequency waveform to sense a voltage and phase of a commercial power supply; The self-generated voltage is interlocked with the first flip-flop IC to selectively conduct the commercial power and the self-generated power. The self-generated power is output from the self-generated voltage detector to analyze the frequency waveform to determine the voltage and phase of the commercial power. A second flip-flop IC having a built-in test analyzer; And a trigger signal for causing the second thyristor to be in a conduction state preferentially when the magnitude of the voltage sensed by the first flip-flop IC and the second flip-flop IC is equal to or greater than a preset value, from the second flip- And a control unit (CPU)

The self-generated voltage detecting unit includes a voltage quality comparator. When the voltage detected by the self-generated voltage detecting unit is less than a preset value of the voltage quality comparator of the self-generated voltage detecting unit, And a phase comparator for comparing the phases of the commercial power source and the self power generation power source through the phase comparator. An output signal of the phase difference between the commercial power source and the self power generation power source is fed back to the inverter, And to adjust the phase of the power supply.

The CPU transmits a high-clock signal to the first flip-flop IC and the second flip-flop IC to output a trigger signal from the second flip-flop IC to turn on the second thyristor, Clock signal to the first flip-flop IC and the second flip-flop IC when the level of the voltage analyzed by the test and analysis unit of the second flip-flop IC becomes 15% or less of the predetermined steady state A trigger signal is output from the first flip-flops IC to turn on the first thyristor to supply commercial power.

The CPU is configured to prevent a malfunction due to temporary voltage drop by incorporating a time delay unit for transmitting the transmitted clock signal for a predetermined period of time.

The following effects can be achieved by the safety in-line operator support system and the work tool stand-off prevention system of the present invention.

First, the present invention receives a signal transmitted from a railway vehicle through a communication alarm device possessed by an operator, thereby reducing the possibility of collision with a railway vehicle (motor car, etc.) of an operator in the railway line, It is possible to prevent a safety accident from occurring by lowering the possibility of a railway car accident caused by a working tool placed.

Secondly, according to the present invention, a worker (obstacle) is left in a work space of a line by mistake due to sleepiness or loss of concentration due to a wireless communication and notification between a transmission device for a work tool and a communication alarm device of a worker And the possibility of occurrence of a vehicle accident that may occur when the working tool is left untreated can be prevented.

Thirdly, the present invention can be configured as a separate loop detection device, replacing the transmission device which had to be installed in the railway car through the transmission module of the loop detection device, There is an effect of solving the problem of an increase in installation cost of the entire system due to the apparatus.

FIG. 1 is a diagram illustrating a working environment of a line in which a system according to the present invention is implemented.
2 is a configuration diagram of a worker safety support system according to an embodiment of the present invention.
3 is a configuration diagram of a system for managing obstacle obstruction according to an embodiment of the present invention.
FIG. 4 is a block diagram of a system for preventing in-line worker safety support and a work tool by using a loop detection configuration according to an embodiment of the present invention.
5 to 7 are block diagrams of a power supply unit having a power supply switching device in the loop detection configuration according to the embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a diagram illustrating a working environment of a line in which a system according to the present invention is implemented.

Referring to the drawings, workers working at night or during the day around the railway are arranged and operated.

Railways, such as electric trains and motorcars, are continuously operated, and many workers work on the railway and around the railway with the tools to work on the railway.

Therefore, in the case of a railway vehicle or a motor car traveling, it is necessary to provide a safety support system for the workers in the railway line and a system for preventing the operation tool from being neglected.

2 is a configuration diagram of a worker safety support system according to an embodiment of the present invention.

As shown in the drawing, the railway vehicle 100 including the motor car is continuously moved in the railway section in the railway operation, and the railway vehicle 100 is equipped with the transmission device 110.

The transmission device 110 is installed in a driver's seat of a motor car or the like, and is configured to continuously transmit the RF frequency at a constant transmission cycle.

For reference, the RF frequency transmitted from the transmitting apparatus 110 is wide in the range of 360 degrees in the forward direction and 10 dB in the transmitting output, and the signals are transmitted to the communication alarm apparatus 200 worn or held by workers .

The wrist-type communication alarm device 210 worn on the operator's wrist is configured in the form of a wrist band to be worn by workers, .

The wrist-type communication alarm device 210 includes a reception control module and a power supply unit. When the wrist-type communication alarm device 210 receives a signal output from the transmission device of the railway car 100, vibration or alarm occurs immediately. Is displayed.

In addition, the vest type communication alarm device 220 is worn on the tops of workers. In the vest type communication alarm device 220, a reception control module, a charger, an LED, and the like are constituted, and upon receiving a signal output from the transmission device of the railway car 100, a vibration or an alarm is instantly generated, .

In addition, a stationary communication alarm device 230 is disposed in the line work space. The stationary communication alarm device 230 is an access information alarm device that is stored in a work space of a railway line where workers work. Likewise, when the stationary communication alarm device 230 receives a signal output from the transmission device of the railway vehicle 100, The LED may also be configured to emit light.

More specifically, it is configured to generate a 125-pye high-intensity LED light emission and a loud sound (102 dB) upon reception of a signal from a transmission apparatus of the railway vehicle 100.

That is, according to the present invention, a signal transmitted from the railway vehicle 100 is received through the communication alarm device 200 possessed by the operator, thereby reducing the possibility of a collision with a railway vehicle (motor car, etc.) , And the possibility of a railway accident caused by a work tool placed on the railway is lowered, thereby preventing a safety accident from occurring.

3 is a configuration diagram of a system for managing obstacle obstruction according to an embodiment of the present invention.

Referring to the drawings, a transmission device 300 for a work tool for obstacle management is placed on a work tool, that is, the upper end of the obstacle placed on a railway or a railroad held by an operator.

When the "start" button of the button unit is pressed, an RF radio signal is periodically transmitted to the wrist-type communication alarm device 210 of the operator, Type communication alarm device 220, and is stopped when the "end" button is pressed.

More specifically, a forward 360 ° transmission output + 10dBm signal is transmitted. When a wrist-type communication alarm device 210 and a vest type communication alarm device 220 of a worker receive a signal, And send a response signal (ACK) to the transmitting device 300 for the working tool.

The transmitting device 300 for the working tool is operated in a state where the operator's wrist-type communication alarm device 210 or the vest type communication alarm device 220 are separated from each other by a predetermined distance and do not receive a response signal (ACK) The LED is configured to emit light through the LED beacon, and the alarm can be set to sound together.

That is, according to the present invention, a worker can be notified of a work tool (obstacle) by mistake due to nighttime sleepiness, loss of concentration or the like through wireless communication and notification between the transmission device 300 for a work tool and the communication alarm device 200 It is possible to prevent a mistake that is left in the line work space or a possibility of a vehicle accident that may occur when the working tool is left unattended.

FIG. 4 is a block diagram of a system for preventing in-line worker safety support and a work tool by using a loop detection configuration according to an embodiment of the present invention.

Referring to the drawings, a railroad car 100 (including a motor car) is continuously moved in a railroad section in a railroad operation, and the railroad car 100 is equipped with a transmission device 110.

The transmission device 110 is installed in a driver's seat of a motor car or the like, and is configured to transmit a signal to the communication alarm device 200 continuously worn or held by an operator at a predetermined transmission cycle.

In such a system, the transmission apparatus 110 must be installed inside the railway vehicle 100, which leads to an increase in the overall system cost due to a considerable increase in the installation cost.

In order to reduce the cost increase, a loop detecting apparatus 400 is configured to detect the approach of the railway vehicle 100 to a line surface at a position where the railway vehicle 100 enters a line work space in which a worker is working.

In addition, a plurality of piezoelectric elements 500, which are in contact with the wheels of the railway car 100, are arranged in the line on which the railway vehicle 100 enters.

The loop detecting device 400 includes a loop coil 410 installed to distinguish whether a railway car 100 such as a motor car enters or exits when entering.

A loop detection module 420 installed in the safety zone of the line for receiving an electrical change induced by the vehicle from the loop coil 410 to detect the presence of a vehicle and the type of vehicle, The originating module 430 is configured to be connected to the antenna so as to transmit a signal to the communication alarm device 200 of the operator wirelessly while automatically receiving the activation signal from the loop detection module 420. [

The electric energy generated when the piezoelectric element 500 is in contact with the wheels of the railway vehicle 100 is charged to the power storage module 450 of the loop detection device 400 by self-power generation.

The power source of the loop detection module 420 and the transmission module 430 is selectively supplied to the power storage module 450 through a commercial power source of the battery 440, (600).

The commercial power source by the battery 440 is configured to be able to be separated from the equipment of the loop detecting device installed on the road surface of the railway line in a predetermined manner and then exchanged.

The control operation of the vehicle or motor car using the loop detection configuration according to the embodiment of the present invention will be described as follows.

The transmission apparatus 110 for generating a transmission signal when the railway vehicle 100 enters the worker's communication alarm apparatus 200 is replaced with the loop detection apparatus 400 of the present invention.

In other words, the transmission module 430 when the railway vehicle 100 arrives is activated when the entrance of the railway vehicle 100 is detected by the loop detection device 400, and is installed in the loop detection device 400 And transmits a signal to the communication alarm device 200 of the worker through the transmission module 430 wirelessly.

With this configuration, the transmission device 110, which had to be installed in the railway vehicle, can be replaced with the transmission module 430 of the loop detection device 400, There is an effect of solving the problem of an increase in installation cost of the entire system due to the apparatus.

5 to 7 are block diagrams of a switching power supply module in a loop detection configuration according to an embodiment of the present invention.

Hereinafter, the switching power supply module 600 for selectively providing the self-generated power by the commercial power supply and the piezoelectric element 500 with the loop detection module 420 as the load and the transmission module 430 will be described in detail with reference to the accompanying drawings. Explain.

5 is a block diagram of an entire switching power supply module 600 according to an embodiment of the present invention. Referring to FIG. 5, the loop power supply module 420 and the transmission module 430, which are loads, The switching power supply module 600 for providing a selection of the self-generated power is constituted by a first thyristor 610 for connecting commercial power to a load and a second thyristor 620 for connecting the self-generated power to a load. The thyristor may comprise an element such as SCR or Triac.

In addition, a commercial voltage detector 630 that receives the commercial power and detects a voltage and a phase, an inverter 640 that adjusts a voltage state of the self power generation power source, and an inverter 640 that receives the self power generation power through an inverter 640, And a self-generated voltage detector 650 for detecting a phase.

The first thyristor 610 receives the trigger signal of the first flip-flop IC 670 as a gate signal under the control of the CPU 660 and the second thyristor 620 is also turned on by the CPU 660 The trigger signal of the second flip-flop IC 680 is applied as a gate signal according to the control.

The first flip-flop IC 670 receives a commercial power output from the commercial voltage detector 630 and analyzes the frequency waveform to detect the voltage and phase of the commercial power. The second flip-flop IC 680 receives a self-generated power generated by the self-generated voltage detector 640 and analyzes the frequency waveform to detect the voltage and phase of the self-generated power. It is built in.

The first flip-flop IC 670 and the second flip-flop IC 680 are interlocked with the CPU 660 to selectively conduct the commercial power and the self-generated power under the control of the CPU 660. [ Thereby constituting a circuit.

The phase comparator 690 compares the phases of the self-generated power source and the commercial power source. The phase comparator 690 compares the self-generated voltage detected by the self-generated voltage detector 650 with the self- When the voltage of the power supply voltage is equal to or lower than a preset value of the voltage quality comparator 652 of the detector 650, the phase comparator 652 receives the signal output from the self-generated voltage detector 650 and compares the phase of the self- do.

Here, the voltage quality comparator 652 is configured to compare the percentage of the self power generation suitable power source. In the test analysis part of the second flip flop IC 680, And when the magnitude of the self-generated power source voltage drops to 15% or less of the value of the normal voltage state, for example, the steady voltage, the output is sent to the phase comparator 690 .

The phase comparator 690 serves to prevent the burn-in due to a sudden change in voltage of the load due to a large difference in voltage due to the phase difference when a power source having two different phases is supplied to the load in a switched state. will be.

Therefore, in the case where the self-generated voltage detecting unit 650 indicates that the self-generated voltage has a low voltage or an exhausted state with respect to the self-generated power source that is preferentially supplied to the load through the control of the CPU 660, And outputs the output to the phase comparator 690 when the voltage value is equal to or less than a value already set in the voltage quality comparator 652 to compare the phase difference between the commercial power source and the self power generation power source through the phase comparator 690.

Preferably, the self-generated voltage detector 650 outputs a signal to the phase comparator 690 when the voltage of the self-generated power source is 85% or less of the set reference power source voltage, And the phase difference is compared.

At this time, the phase difference existing in the commercial power source and the self-generated power source is fed back to the inverter 640 through the phase comparator 690 to adjust the phase of the self-generated power source voltage.

Hereinafter, the operation principle of the switching power module 600 for selectively providing the commercial power and the self generating power as a load while detecting the power state of the load in-loop detecting module 420 and the transmitting module 430 will be described in detail .

6, the commercial power source detects the phase and the voltage through the commercial voltage detector 630 and detects the phase and the voltage of the commercial power source, Flop IC 670 as shown in FIG. The self-generated power is supplied to the second flip-flop IC 680 while the voltage and phase of the self-generated power are adjusted by the self-generated voltage detector 650 through the inverter 640.

The signal output from the first flip-flop IC 670 is amplified by the amplifier D1 to generate a trigger signal at the first thyristor 610, and the signal output from the second flip- (D2, D) to generate a trigger signal at the second thyristor (620).

The first flip-flop IC 670 receives the commercial power output from the commercial voltage detector 630 and analyzes the frequency waveform in the built-in test analyzer to sense the voltage and phase of the commercial power supply, Flop IC 680 receives the self-generated power from the self-generated voltage detector 650, analyzes the frequency waveform in the built-in test analyzer, detects the voltage and phase of the self-generated power, The first flip-flop IC 670 and the second flip-flop IC 680 are configured as an interlocking circuit so as to selectively conduct the generated power.

In addition, the CPU 660 receives the analyzed result in conjunction with the inspection and analysis unit of the first flip-flop IC 670 and the second flip-flop IC 680. [

When the magnitude of the voltage sensed by the first flip-flop IC 670 and the second flip-flop IC 680 is equal to or greater than a predetermined value, the CPU 660 preferentially turns on the second thyristor 620 The second flip-flop IC 680 outputs the trigger signal Q2 to the second flip-flop IC 680. [

6, more specifically, the CPU 660 transmits a high-clock signal to the first flip-flop IC 670 and the second flip-flop IC 680, The trigger signal Q2 is outputted from the inverting part of the flip IC 680 so that the second thyristor 620 is turned on to supply the self power generation power.

More specifically, when the CPU 660 transmits a high-clock signal to the first flip-flop IC 670 and the second flip-flop IC 680, a signal of J = 1, K = 1, C = The trigger signal Q2 amplified by the amplifier D2 is inputted to the gate signal of the second thyristor 620 and is supplied to the second thyristor 620 through the inverting signal of the second thyristor 620 at the inverting part of the second flip- .

That is, the CPU 660 outputs the trigger signal Q2 at the inverting part of the second flip-flip IC 680 to turn on the second thyristor 620 to supply the self-generated power.

7, the level of the voltage analyzed by the test and analysis unit of the second flip-flop IC 680 is set to a predetermined steady state state, as shown in FIG. 7, when the commercial power supply according to the present invention is turned on. Clock signal to the first flip-flop IC 670 and the second flip-flop IC 680 to output a trigger signal from the first flip-flop IC 670 to the first flip- The thyristor 610 is turned on and the commercial power is supplied to the load.

In other words, the test and analysis unit of the second flip-flop IC 680 detects a negative voltage slope that the self-generated power supply voltage will disappear in a steady state, which is less than or equal to 15% of the steady- The CPU 660 compares the voltage level of the used power source analyzed by the inspection and analysis unit of the first flip-flop IC 670 in another state and outputs a low-clock signal as a switching signal when the voltage is higher than the voltage of the commercial power source And the first thyristor 610 receives the trigger signal from the first flip-flop IC 670 to be in a conductive state.

That is, the first thyristor 610 and the second thyristor 620 are connected to each other through the mutual analysis of the voltage states analyzed by the inspection and analysis sections of the first flip-flop IC 670 and the second flip- Interlocking circuit is configured so as to maintain the other state in an insulated state, and can not be all in a conductive state.

More specifically, when the CPU 660 transmits a low-clock signal to the first flip-flop IC 670 and the second flip-flop IC 680, a signal of J = 1, K = 1, C = The first flip-flop IC 670 receives the trigger signal Q1 amplified by the amplifier D1 as a gate signal of the first thyristor 610 to turn on the first thyristor 610.

Also in this case, the CPU 660 outputs the trigger signal Q1 in the first flip-flop IC 670 to turn on the first thyristor 610 to supply the commercial power.

At this time, a time delay unit (not shown) is built in the CPU 660 so that the clock signals transmitted to the first flip-flop IC 670 and the second flip-flop IC 680 are transmitted for a predetermined period of time, It is preferable to prevent the malfunction due to the voltage drop, and preferably, the screen run time is set to about 0.1 second.

In addition, when the self-generated power source is reconnectable, a series of operations in which the self-generated power source is re-supplied again while the commercial power source is shut off is repeated. That is, in the present invention, when the self-generated power is consumed while the contact is always connected to the self-generated power, the commercial power is automatically connected to maintain the load in a normal state, and the self- The commercial power is automatically shut off.

As a result, the switching power supply module 600 of the present invention includes a plurality of first thyristors 100 and second thyristors 200, which are automatic switching switches that are supplied with power from a commercial power source or a self-generated power source to provide a load The plurality of automatic switching switches are connected to the commercial power supply and the self-generating power supply in parallel with each other, and only one of the plurality of automatic switching switches is driven so that power is supplied to the load.

While the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

100: railway vehicle 110: transmitting device
200: communication alarm device 210: wrist type communication alarm device
220: vest type communication alarm device 230: stationary communication alarm device
300: Transmitter for working tools
400: Loop detecting device 410: Loop coil
420: Loop detection module 430: Originating module
440: Battery 450: Power storage module
500: piezoelectric element
600: power switching module 610: first thyristor
620: second thyristor 630: commercial voltage detector
640: inverter 650: self-generated voltage detector
660: CPU 670: first flip-flop IC
680: second flip flop IC 690: phase comparator

Claims (9)

CLAIMS 1. A system for supporting worker safety in a track,
A loop detector for detecting an approach of a railway vehicle installed on a railway surface when a worker enters a railway work space in operation and outputting a signal through a transmission module when the railway vehicle entering the railway is detected; And
And a communication alarm device for an operator configured to receive a signal having a frequency output from the transmission module included in the loop detection device and generate vibration or an alarm and display an entry of the railway vehicle on the LCD display part, And,
The loop detection device includes a plurality of loop coils installed to distinguish whether the railway vehicle enters or exits when the railway vehicle comes in, and a plurality of loop coils installed on the railway coils to detect the presence or absence of the vehicle and the type of vehicle by receiving electrical changes induced by the vehicle from the loop coils. And a transmitting module connected to the antenna for wirelessly transmitting a signal to the communication alarm device of the operator when the signal is detected by the loop detecting module and receiving an activation signal from the loop detecting module, And a battery for supplying driving power to the loop detecting module and the calling module,
A plurality of piezoelectric elements arranged in contact with the wheels of the railway vehicle on a line where the railway vehicle enters;
And a power storage module configured in the loop detection device to store electric energy generated by self-power generation while the piezoelectric element is in contact with a wheel of a railway vehicle,
Wherein the power supply switching module is further comprised in the loop detection device so that the driving power of the loop detection module and the calling module selectively supplies the self power generation power stored in the power storage module and the commercial power supply of the battery in a power switching manner,
The power switching module includes:
A first thyristor for connecting the commercial power source to a driving power source of the loop detecting module and the calling module;
A second thyristor for connecting the self power generation power source to the driving power source of the loop detection module and the transmission module;
A commercial voltage detector that receives the commercial power and detects a voltage and a phase;
An inverter for adjusting a voltage state of the self power generation power source;
A self-generated voltage detector for detecting a voltage and a phase of the self-generated power supplied through the inverter;
A first flip-flop IC having an inspection and analysis unit for receiving a commercial power output from the commercial voltage detector and analyzing a frequency waveform to sense a voltage and phase of a commercial power supply;
The self-generated voltage is interlocked with the first flip-flop IC to selectively conduct the commercial power and the self-generated power. The self-generated power is output from the self-generated voltage detector to analyze the frequency waveform to determine the voltage and phase of the commercial power. A second flip-flop IC having a built-in test analyzer; And
When the magnitude of the voltage sensed by the first flip-flop IC and the second flip-flop IC is equal to or greater than a preset value, a trigger signal for causing the second thyristor to preferentially become conductive is outputted from the second flip- And a control unit for controlling the control unit,
The self-generated voltage detecting unit includes a voltage quality comparator. When the voltage detected by the self-generated voltage detecting unit is less than a preset value of the voltage quality comparator of the self-generated voltage detecting unit, And a phase comparator for comparing phases of the commercial power source and the self power generation power source,
An output signal for phase difference between the commercial power source and the self power generation power source is fed back to the inverter through the phase comparator to adjust the phase of the self power generation power source,
The CPU includes:
A high-clock signal is transmitted to the first flip-flop IC and the second flip-flop IC so that a trigger signal is output from the second flip-flop IC to turn on the second thyristor to supply self-generated power,
Clock signal to the first flip-flop IC and the second flip-flop IC when the level of the voltage analyzed by the test and analysis unit of the second flip-flop IC becomes 15% or less of the predetermined steady state, The first thyristor is turned on and the commercial power is supplied to the flip-flip IC, and a time delay unit is built in such that the transmitted clock signal is transmitted for a predetermined period of time, Of the worker in the line. delete delete delete delete delete delete delete delete

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