KR20070096302A - Worker safety system using warning lights of train repair vehicle - Google Patents

Abstract

The present invention measures the speed of the vehicle itself when moving the train repair vehicle and displays it visually through the warning lights installed on the outside of the vehicle so that the worker of the track or track side can recognize the speed of the vehicle approaching, furthermore It relates to a worker safety system using a warning light of a train repair vehicle to facilitate the safety of the worker, the photoelectric sensor unit for detecting the wheel rotation of the train repair vehicle to convert the output into an electrical signal; Warning lights mounted on the front and rear parts of the vehicle body; And a control unit that determines the speed of the vehicle based on the signal output from the photoelectric sensor unit and controls the blinking of the warning lamp.

Description

Worker security system using a warning light of motor car}

1 is a block diagram of a worker safety system using a warning light of a train repair vehicle according to the present invention.

2 is a timing diagram of pulses output from a general photoelectric sensor unit.

3 is a reference diagram for explaining a method of detecting the forward and reverse travel direction of a train repair vehicle in the photoelectric sensor unit shown in FIG. 1.

FIG. 4 is a timing diagram of pulses output in a forward / reverse direction of a train repair vehicle in the photoelectric sensor unit shown in FIG. 1.

5 is a connection diagram of a worker safety control system using the warning lights of the train repair vehicle shown in FIG.

* Explanation of symbols for the main parts of the drawings

10a .. first photoelectric sensor part 10b .. second photoelectric sensor part

12 .. Wheel 14 .. Reflector

16 .. Overcurrent breaker

20. Control unit 22. Directional logic

24. Speed calculation logic section 26. Warning light control logic section

28 .. Relay contact

30 .. Front beacon 40 .. Rear beacon

The present invention relates to a worker safety system using a warning light of a train repair vehicle, and more particularly, by installing a warning light on a train repair vehicle to visually display the speed of the vehicle when moving, so that a worker on a track or railroad tracks the speed of the train repair vehicle. The present invention relates to a worker safety system using a warning light of a train repair vehicle that can be recognized.

Railroads, along with cars, airplanes and ships, are important means of transportation that make people's lives easier. In particular, such a railway is very useful as a large-scale transportation between the regions.

As the railroad tracks become obsolete as time passes, work is often done to repair them.However, in order to prevent accidents that may occur when an operator repairs the railroad tracks, several conventional train approach detection devices are used. Was proposed.

First, it installs an ultrasonic sensor at a certain point of the track and detects when the train approaches and alerts that the train is approaching by wirelessly generating a warning sound on the receiver that the worker is carrying.

Secondly, the transmitter is connected to the track and operates in a standby state at normal times, and when the train comes, it detects the state of the frequency or track voltage and informs that the train is approaching the receiver that the operator is carrying.

Third, GPS tracks the train's operating position in real time and alerts train repair personnel working on the track to approach trains.

However, the first method of the train approach detection method as described above, because it is necessary to install the ultrasonic sensor and the wireless device in the front and rear of the work site, there is a problem that unnecessary labor waste occurs when a small work is not only troublesome.

In addition, the second method, there is a problem that the worker is not at all useful to the worker who must move while checking the momentary work by a small number of people, namely single work or a pair of work because it is impossible to use when the worker moves small work.

In addition, the third method has a problem in that compatibility is low because a receiver for receiving train location signals from a GPS satellite is expensive.

The present invention has been made to solve the above-described problems, by measuring the speed of the vehicle itself during the movement of the train maintenance vehicle to display it visually through the warning lights installed on the outside of the vehicle approaching the track or track operator The purpose is to provide a worker safety system using a warning light of a train repair vehicle that can recognize the speed of the vehicle and further promote the safety of the worker.

Worker safety system using the warning lights of the train repair vehicle according to the present invention, the photoelectric sensor unit for detecting the wheel rotation of the train repair vehicle to convert the output into an electrical signal; Warning lights mounted on the front and rear parts of the vehicle body; And a control unit that determines the speed of the vehicle based on the signal output from the photoelectric sensor unit and controls the blinking of the warning lamp.

The control unit is characterized in that for controlling the blinking of the flashing light corresponding to the speed of the vehicle.

The control unit is characterized in that for controlling the blinking of the beacon light corresponding to the stop of the vehicle or running forward and backward.

The photoelectric sensor unit comprises a first and second photoelectric sensor unit for irradiating light to the trajectory formed by the light reflector mounted on the wheel and converting the received light into an electrical signal.

The control unit may determine the forward and backward movement direction of the vehicle on the basis of the time of generating the pulses generated by the first and second photoelectric sensor units.

The beacon is provided with a red light and a green light, respectively, characterized in that composed of a front beacon mounted on the first half and a rear beacon mounted on the second half.

The control unit, when the vehicle is stopped, turn off the red light of the front and rear lights, respectively, and flashes the green light, and when the vehicle moves forward, the red light of the front warning light flashes, the green light blinks, Turn off the red light of the warning light and blink the green light, and when the vehicle moves backward, turn off the red light of the front warning light, flash the green light, and control the red light of the rear warning light to flash and the green light to blink. It features.

The control unit may control to blink when moving below 20 km / h and to turn off when moving above 20 km / h during green light control of the front warning lights according to the forward movement of the vehicle.

The control unit, when controlling the green light of the rear warning lights according to the reverse movement of the vehicle, characterized in that the flashing when moving below 20km / h, and to turn off when moving over 20km / h.

The control unit may include a direction logic unit that determines a moving direction of the vehicle based on a signal input from the photoelectric sensor unit; A speed calculation logic unit calculating a speed of the vehicle based on the signal input from the photoelectric sensor unit; A beacon control logic unit for outputting a control signal for the beacon based on the direction and speed of the vehicle calculated by the direction logic unit and the speed calculation logic unit; And a relay contact unit for selectively operating the beacon in accordance with a control signal output from the beacon light control logic unit.

Hereinafter, with reference to the accompanying drawings will be described for the preferred embodiment according to the present invention.

1 is a configuration diagram of a worker safety system using a warning light of a train repair vehicle according to the present invention, Figure 2 is a timing diagram of the pulse output from the general photoelectric sensor unit, Figure 3 is a photoelectric sensor unit shown in FIG. Figure 4 is a reference diagram for explaining a method for detecting the forward and reverse travel direction of the train repair vehicle, Figure 4 is a timing diagram of the pulse output according to the forward and reverse travel direction of the train repair vehicle shown in Figure 1, Figure 5 1 is a connection diagram of a worker safety control system using a warning light of a train repair vehicle shown in FIG. 1.

Operator safety system using the warning lights of the train repair vehicle according to the present invention, as shown in Figure 1 and the two photoelectric sensor unit (10a, 10b) to detect the rotation of the wheel 12 and converts it into an electrical signal and The front beacon 30 is determined by determining the driving direction and speed of the vehicle based on signals output from the front beacon 30 and the rear beacon 40 and the photoelectric sensor unit 10 mounted on the outside of the vehicle repair vehicle. And a control unit 20 for controlling the rear beacon 40.

The photoelectric sensor units 10a and 10b irradiate light onto the light reflecting plate 14 attached to the wheel 12 and receive the light reflected by the light reflecting plate 14.

In particular, the control unit 20 determines the speed of the train repair vehicle on the basis of the sensing signal input from the photoelectric sensor unit (10a, 10b), the front warning light ( 30 or the rear beacon 40 is variably controlled.

In addition, the control unit 20 is to control the front beacon 30 or the rear beacon 40 variably when the train repair vehicle is stopped or moving in the forward or reverse direction.

In addition, the control unit 20 is input from the direction logic unit 22 and the photoelectric sensor unit 10 to determine the traveling direction of the train repair vehicle based on the signal input from the photoelectric sensor unit 10. A speed calculation logic unit 22 that calculates the speed of the train repair vehicle based on a signal that is to be used, and the front warning light 30 or the rear warning light 30 based on the vehicle speed calculated by the speed calculation logic unit 22. Relay contact for selectively operating the front beacon 30 or the rear beacon 40 according to the beacon light control logic unit 24 for outputting a flashing control signal for the beacon and the control signal output from the beacon light control logic unit 24. It is comprised with the part 28.

The photoelectric sensor units 10a and 10b, the control unit 20, and the front and rear warning lights 30 and 40 as described above are protected by the overcurrent breaker 16.

Each component of the train repair vehicle warning light control system according to the present invention as described above will be described in more detail.

First, the pulse output from the general photoelectric sensor unit mounted on the chassis is generated once while the wheel 12 is rotated as shown in FIG. 2. Therefore, when the pulse generation period is T, the speed of the train is set to V = S / T (S is the circumference of the wheel).

By the way, according to the present invention, the photoelectric sensor units 10a and 10b mounted on the chassis are irradiated with light toward the wheels 12 and detecting the rotation of the wheels 12 based on the optical signals received and reflected. As shown in FIG. 3, two photoelectric sensor units 10a and 10b are mounted, and each photoelectric sensor unit 10a and 10b is mounted to the side of the wheel 12. The light reflector 14 irradiates light and converts the received light into an electrical signal and outputs the electrical signal to the control unit 20.

The control unit 20 determines whether the train repair vehicle moves in the forward direction or the reverse direction on the basis of the signal input from the photoelectric sensor units 10a and 10b. To control.

The above-described method for determining the forward and reverse direction of the train repair vehicle by the control unit 20 will be described.

As shown in FIG. 3, a light reflector 14 is attached to a side surface of the wheel 12, and two first and second photoelectric sensor units are disposed at an arbitrary point of the chassis corresponding to the light reflector 14. 10a and 10b are installed to irradiate light to the wheel 12 having the light reflector 14 and convert the received light signal into an electrical signal and output the light signal to the control unit 20.

In the state where the first photoelectric sensor unit 10a and the second photoelectric sensor unit 10b are irradiated with light at a point ⓐ and a point ⓑ respectively, the train repair vehicle is in the direction of ①. When moved, the optical signal detected by the two photoelectric sensor unit (10a, 10b) shows a square wave as shown in Fig. 4 (a), when the train repair vehicle moves in the ② direction, the two photoelectric sensors The optical signal detected by the units 10a and 10b exhibits a square wave as shown in Fig. 4B.

In this case, the control unit 20 is a square wave is generated by the first and second photoelectric sensor unit (10a, 10b), respectively, while resetting a timer (not shown) each time the wheel 10 is rotated once. Based on the time counted at the time point, it is determined whether the train repair vehicle proceeds in the forward direction or the reverse direction.

That is, the control unit 20 drives the timer when the wheel 12 of the train repair vehicle rotates in the direction of 1 and generates a square wave by the first photoelectric sensor unit 10a. When the square wave is generated by the sensor unit 10b, the time B_t1 counted by the timer is stored in the memory. When the wheel 12 rotates again to generate a square wave by the first photoelectric sensor unit 10a, the time A_t1 counted by the timer is stored in the memory.

Subsequently, in the control unit 20, when the wheel 12 rotates in the direction of 1, a cycle A_t1 of the first photoelectric sensor unit 10a is generated by the first photoelectric sensor unit 10a. After the time is greater than the time (B_t1) that the pulse is generated by the second photoelectric sensor unit 10b, the wheel 12 is rotated in the ② direction, the period (A_t1) and the first photoelectric of the first photoelectric sensor unit 10a After the pulse is generated by the sensor unit 10a, the rotation direction of the wheel 12 is determined in consideration of the fact that the counted time B_t2 is similar when the pulse is generated by the second photoelectric sensor unit 10b. .

That is, when the time counted by the timer satisfies [A_t1-2B_t1> 0], the controller 20 determines that the wheel 12 is rotating in the forward direction, and the time counted by the timer is [ When A_t1-2B_t1 <0] is satisfied, it is determined that the wheel 12 is rotating in the reverse direction.

The control unit 20 calculates a moving speed of the vehicle based on a period of a waveform generated by the first photoelectric sensor unit 10a.

As described above, the driving operation of the timer by the control unit 20 is repeatedly performed while the wheel 12 is rotated.

On the other hand, the front beacon 14 and the rear beacon 16 is to be mounted in the first half or the second half of the train repair vehicle, the front beacon 14 and the rear beacon 16 is provided with a red light and green light respectively. It is installed outside the body of the repair vehicle.

As shown in Table 1, the control unit 20 controls the front beacon 30 and the rear beacon 40 by performing different control operations when the train repair vehicle stops or moves forward and backward. .

Note 1) The front is where the driver's seat is and the rear is the opposite.

Note 2) F: Blinking, X: Off.

That is, the controller 20 may determine when the train repair vehicle is stopped (the vehicle stopped state or the forward / reverse movement state may be determined based on the signal output from the photoelectric sensor unit 10 as described above. ), The red light of the front beacon 30 and the rear beacon 40 is turned off, and the green light is controlled to blink.

In addition, the control unit 20 is flashing the red light of the front beacon 30, the green light is blinking, the red light of the rear beacon 40 is turned off, the green light when the forward movement of the train repair vehicle, It will be controlled to blink.

In addition, the control unit 20, when the reverse movement of the train repair vehicle, the red light of the front beacon 30 is turned off, the green light is blinking, the red light of the rear beacon 40 flashes, the green light is It will be controlled to blink.

On the other hand, the control unit 20 performs different flashing control for the green light of the front beacon 30 and the green light of the rear beacon 40 according to the moving direction and the moving speed of the train repair vehicle.

That is, the control unit 20 controls the green light of the front warning light 30 to flash when the train repair vehicle moves at a speed of 20 km / h or less in the forward direction, and when moving at a speed exceeding 20 km / h. The green light of the front warning light 30 is controlled to turn off.

In addition, the control unit 20 controls the green light of the rear beacon 40 to flicker when the train repair vehicle moves at a speed of 20 km / h or less in the reverse direction, and when moving at a speed exceeding 20 km / h. The green light of the rear warning lamp 40 is controlled to turn off.

Here, the moving speed of the train repair vehicle as described above (20 km / h) usually does not exceed 20 km / h when operating the train using the train repair vehicle, exceeding 20 km / h when driving That's why. At this time, since the train repair vehicle does not move exactly at the same speed, it is preferable to allow an appropriate error range when determining the operation and operation.

On the other hand, Figure 5 is a connection diagram for the worker safety system using the warning lights of the train repair vehicle according to the present invention, the operating power is the photoelectric sensor unit 10 and the control unit 20 and the power switch is operated on or off The power supply is interrupted to the front and rear side warning lights 30 and 40.

According to the present invention as described above, by controlling the flashing state of the front warning light 30 and the rear warning light 40 installed on the outside of the train repair vehicle to correspond to the speed of the vehicle, the operator of the track or track side progresses the train repair vehicle. It will be easy to know the direction and speed.

The above embodiments have been described with respect to the most preferred examples of the present invention, and the present invention is not limited to the above embodiments, and various modifications may be made without departing from the spirit of the present invention.

As described above, the warning light control system of a train repair vehicle according to the present invention can visually display the speed of the vehicle as a warning light so that a worker on a track or track side can recognize the speed of the vehicle in the forward / reverse direction when the train repair vehicle moves. It is effective.

In addition, the present invention has the effect of enabling the operator of the track or track side to visually recognize the speed of the vehicle when moving the train maintenance vehicle to promote the safety of the operator.

Claims (10)

A photoelectric sensor unit which detects wheel rotation of the train repair vehicle and converts the converted wheel into an electrical signal; Warning lights mounted on the front and rear parts of the vehicle body; And And a control device to determine the speed of the vehicle based on the signal output from the photoelectric sensor and to control the blinking of the warning lamp. The method of claim 1, The control unit, Worker safety system using a warning light of the train repair vehicle, characterized in that for controlling the blinking of the warning light corresponding to the speed of the vehicle. The method of claim 1, The control unit, Worker safety system using a flashing light of the train repair vehicle, characterized in that for controlling the flashing of the flashing light in response to the vehicle stop or forward and backward driving. The method according to any one of claims 1 to 3, The photoelectric sensor unit, The first and second photoelectric sensor unit for irradiating light to the trajectory formed by the light reflector mounted on the wheel and converts the received light into an electrical signal; Worker safety system. The method of claim 4, wherein And the control unit determines the forward / reverse movement direction of the vehicle based on the time of generating the pulses generated by the first and second photoelectric sensor units. The method according to any one of claims 1 to 3, The beacon is provided with a red light and a green light, respectively, the worker safety system using a beacon light of a train repair vehicle, characterized in that consisting of a front beacon mounted on the first half and a rear beacon mounted on the second half. The method of claim 6, The control unit, At the time of stopping of the vehicle, turn off the red lights of the front and rear lights and turn off the green lights, respectively. When the vehicle moves forward, the red light of the front warning light blinks, the green light blinks, the red light of the rear warning light turns off, the green light blinks, When the vehicle is moved in reverse, the safety system of the operator using a warning light of a train repair vehicle, which controls to turn off the red light of the front warning light and to flash the green light, and to flash the red light of the rear warning light and to flash the green light. . The method of claim 7, wherein The control unit, When the green light of the front warning lights according to the forward movement of the vehicle, when the movement below 20km / h flashes, and when moving more than 20km / h by using a warning light of the train repair vehicle, characterized in that the control Worker safety system. The method of claim 7, wherein The control unit, When the green light is controlled among the rear warning lights according to the reverse movement of the vehicle, the vehicle blinks when moving below 20 km / h, and lights off when moving over 20 km / h. Worker safety system. The method according to any one of claims 1 to 3, The control unit, A direction logic unit which determines a moving direction of the vehicle based on the signal input from the photoelectric sensor unit; A speed calculation logic unit calculating a speed of the vehicle based on the signal input from the photoelectric sensor unit; A beacon control logic unit for outputting a control signal for the beacon based on the direction and speed of the vehicle calculated by the direction logic unit and the speed calculation logic unit; And And a relay contact unit for selectively operating the beacon in accordance with a control signal output from the beacon light control logic unit.

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