JP2011225162A - Method and device for detecting half-disconnection or whole-disconnection of multi-light type color light signal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for detecting half-disconnection or whole-disconnection of a multi-light type color light signal, for easily knowing a faulty lamp in a separate place from a job site.SOLUTION: A disconnection detecting device 1 is provided by connecting an electric current sensor CT to a monitoring line of respective signal lights of using an LED for a light emitting source, and includes an input part 14 connected to the monitoring line via the electric current sensor CT and having an amplifying circuit 11 and an A/D conversion circuit 12, a display 3 for displaying indication information for expressing a monitoring line number of the respective monitoring lines or an electric current value flowing to the monitoring lines, a control part 15 for comparing input information from the monitoring lines with a threshold value of the respective signal lights preset in a memory, an alarm lamp 4 for displaying any of the half-disconnection or the whole-disconnection of the monitoring lines, and a plurality of operation buttons 5-8 for displaying the electric current value or the indication information displayed on the display 3, and the control part 15 determines the signal light put in a state of the half-disconnection or the whole-disconnection by flashing or lighting the indication information.

Description

  The present invention relates to a color lamp signal device using an LED as a signal light source, and more particularly to a method and an apparatus for detecting a disconnection of a multi-lamp color lamp signal device for detecting and displaying a half or complete disconnection of an LED in such a signal device. About.

  A multi-lamp color lamp traffic light is a traffic light that displays signals using three kinds of lamp colors (green, yellow, red) alone or in combination. There are two types, one shown and the other shown, which are combined with a single lamp and installed vertically.

  In recent years, LEDs have been used instead of light bulbs as light sources of traffic lights. For example, in the 5 lamps shown, a plurality of LEDs are used as signal emission sources, and G (green) lamp, Y (yellow) lamp, R (red) lamp, YY (yellow, yellow) lamp, YG (yellow) , Yellow) is composed of a combination of lights.

  The LED does not break like a filament of a light bulb, but there is a problem that the light intensity gradually decreases when used for a long time. The time until the luminous intensity is halved is determined as the lifetime. When continuously used outdoors, the lifetime is generally 10,000 because it is subject to repeated changes in temperature and humidity and may be affected by various environments. Although it is considered to be 30,000 hours, a disconnection (open) accident or a short-circuit failure occurs due to deterioration or other unforeseen circumstances.

  In preparation for unexpected situations such as those described above, color signal lights that use LEDs as signal emission sources are connected to dedicated current sensors (CT sensors) for each signal light, and the current consumption value of each light is detected by the sensor. When any of the current values monitored and detected for each signal lamp is equal to or less than the set reference value, a measure is taken to determine that the LED of the signal lamp is faulty and output an alarm.

For example, in the device of Patent Document 1, an arbitrary plurality of current sensors (CTL1, CTL2, CTL3) that are fewer than the number of display signal lamps, and an arbitrary plurality of each of these current sensors are passed through each current sensor. It includes a current measurement through-line that connects the indicator signal lamp and the signal indication relay contact circuit, and a failure detector connected to the current sensor.
The failure detection unit includes a memory unit and a processing unit, and can determine whether the display is abnormal in a completely disconnected state, normal in display without disconnection, or in a short circuit.

  Further, in the device of Patent Document 2, the failure limit value of the LED is accurately determined without being influenced by the LED characteristics or the installation environment of the traffic light. A failure is detected.

  This failure detection device is a signal lamp of a three-way signal device in which a plurality of lamps L1 to L5 each have a plurality of LEDs as signal emission sources, like the device of Patent Document 1, and includes three current sensors. The signal display switching controller is connected with five through lines penetrating two or three through 1a to 1c.

  As shown in FIG. 6, the failure detection unit 30 in this apparatus includes an input unit 32, a processing unit 40 including a microcomputer, a display unit 50, and a memory unit 52. The input unit 30 includes a current / voltage converter 33 and a 50/60 Hz filter 34, and the processing unit 40 includes a short-circuit detection unit 42, a time processing unit 44, a disconnection detection unit 46, and a display determination unit 48. Yes. The memory unit 52 stores a reference current value for failure determination measured by each of the current sensors 1a to 1c.

The failure detection unit 30 is connected to the current sensors 1a to 1c and the voltage monitoring device 35, synchronously monitors the current consumption of the traffic light and the transmission end voltage, calculates the traffic signal side arrival voltage from this synchronization monitoring information, and operates at the time of operation. The failure limit value is determined, and the measured value at the time of operation is compared with the failure limit value at the time of operation to determine the failure of the lamp.

Utility Model Registration No. 3051830 JP 2000-222686 A

  In the above two devices, disconnection can be detected, but the failed lamp cannot be identified. The above traffic lights are used in various parts of the railway line, and even if it is found that the traffic lights are broken, especially in traffic lights used in long tunnels and bridges, The problem was that it was not possible to identify whether the lamp was broken.

  If the failed lamp cannot be identified, the maintenance worker will carry out all the LED lamps of each color used in the traffic light for a long distance to the point of failure, and replace the lamp while checking on site. There was inconvenience that you had to do.

  It is an object of the present invention to provide a half-light type multi-color signal device that can easily know a failed light device at a distance from the site even if the light device of the signal device using an LED as a light source fails. An object of the present invention is to provide a method and apparatus for detecting disconnection or total disconnection.

In order to solve the above-mentioned problems, the present invention uses a disconnection detection device in which a current sensor is connected to a monitoring line of each signal lamp using an LED as a light emission source, and a half disconnection or a complete disconnection of a multi-lamp type color lamp signal device. A method of detecting
When any one of the signal lights is disconnected, the state of the alarm lamp of the disconnection detection device determines whether it is a half disconnection or a complete disconnection,
In the case of a partial disconnection, the monitor line of each signal lamp is sequentially switched and the instruction information indicating the monitor line number is displayed on the indicator of the disconnection detector, and the current value flowing through the monitor line is compared with a preset threshold value. By detecting the half-broken signal light,
When all lines are disconnected, the monitoring line number corresponding to each signal lamp is set to the blinking state, and the monitoring line number corresponding to the signal line is detected by detecting the current flowing in the monitoring line of the signal light that has been restored sequentially over time. The flashing instruction information is sequentially turned on, and finally a signal lamp in which no current flows is found.

  In a preferred embodiment of the present invention, when the half-broken signal lamp is detected, when the current value is lower than the set threshold value, one of the indication information of the monitoring line number that is sequentially switched in the indicator flashes. Includes steps.

  In addition, the detection of the all-broken signal lamps causes all of the monitoring line number indication information to blink, sequentially turns on the one monitoring line number indication information displayed on the display, and finally blinks. Including the step of determining whether the signal light of the monitoring line number remaining in the state is all disconnected, or if the instruction information of all the monitoring line numbers remains flashing, the line cable is disconnected. .

Furthermore, in the embodiment of the present invention, in the disconnection detection device in which a current sensor is connected to the monitoring line of each signal light using LEDs as light emitting sources in order to detect a half disconnection or a complete disconnection of a multi-lamp color lamp signal device. ,
An input unit connected to the monitoring line via the current sensor and having an amplifier circuit and an A / D conversion circuit;
Indicator information indicating the monitoring line number of the monitoring line corresponding to each signal lamp, or a display for displaying the current value flowing through the monitoring line;
A control unit that compares input information from the monitoring line connected to each signal light from the input unit and a threshold value of each signal light set in advance in a memory;
An alarm lamp for displaying either half or all broken lines of the monitoring line;
A plurality of operation buttons for displaying the current value displayed on the display or the instruction information;
The control unit determines a signal lamp in a half-broken state or a full-broken state by blinking or lighting the instruction information of the monitoring line number.

  Further, in a preferred embodiment, the control unit indicates a monitoring line number that is sequentially switched in the display unit when the current value is lower than a threshold value set in the memory when a half-break of a signal lamp is detected. A signal for blinking one of the information is output.

  Further, the control unit causes all of the monitoring line number instruction information to blink when all disconnections are detected, sequentially turns on the one monitoring line number instruction information displayed on the display, and finally It is determined whether the signal light of the monitoring line number remaining in the flashing state is completely disconnected, or if the indication information of all the monitoring line numbers remains flashing, the line cable is disconnected. It is said.

  According to the present invention, it is possible to determine the state of the half-broken line and all the broken lines, and to identify the failed lamp according to the monitoring line number indication information of the display unit. Alternatively, it is sufficient to bring only a lamp that matches one signal light that has been completely disconnected, so that the burden on the maintenance worker can be reduced.

1 shows a disconnection detecting device for a multi-lamp type traffic light according to the present invention, in which (a) is an external plan view and (b) is a back view thereof. It is a block diagram which shows the internal structure of the disconnection detection apparatus which concerns on this invention. It is a figure which shows the display procedure (A) (B) at the time of the half disconnection detection in the indicator in the disconnection detection apparatus which concerns on this invention. It is a figure which shows the display procedure (a)-(e) at the time of the total disconnection detection in the indicator in the disconnection detection apparatus based on this invention. It is a block diagram which shows the monitoring procedure of the disconnection detection apparatus which concerns on this invention. It is a block diagram which shows the structure of the failure detection part in a prior art example.

Below, with reference to drawings, the disconnection detection apparatus 1 of the multiple lamp type | mold signal apparatus which concerns on this invention is demonstrated.
FIG. 1 shows an external view of a disconnection detecting device 1 for detecting an LED disconnection failure in a five-current LED type multi-color light signal using an LED as a light emitting source. The disconnection detecting device 1 is connected via a five-signal signal cable and is disposed in a base station equipment room (not shown).

  The disconnection detection device 1 according to the present invention has a three-digit display 3 of a 7-segment display composed of a light emitting diode or the like in the upper right part of the front panel 2, and in order from the central part on the lower side of the panel to the left side in a row A lamp 4, a setting button 5, a return button 6, a forward feed button 7, and a backward feed button 8 are arranged.

  As shown in FIG. 1 (b), a terminal plate 10 is provided on the back surface 9 of the disconnection detecting device 1, and each terminal of the terminal plate includes a connection terminal for monitoring lines 1 to 5, an alarm output N terminal, An alarm output R terminal and a power output terminal are disposed.

The disconnection detection device 1 has a circuit configuration shown in FIG. 2, and its basic configuration is similar to that of the conventional failure detection device shown in FIG.
That is, the disconnection detection unit 1a includes a current sensor CT connected to each of the monitoring lines 1 to 5, an input unit 14 including the amplification circuit 11 and the A / D conversion circuit 12, and a control unit 15 including a CPU. The three-digit display 3 connected via the LED drive circuit 16, the alarm lamp 4, the alarm relay ER connected to the relay drive circuit 17 for outputting an alarm output signal, and a plurality of button operation units 20 And a memory unit 22 having a flash memory and an EEPROM, and a power supply circuit 24.

Each lamp (signal lamp) of the traffic light is connected to a current measurement through wire in the traffic signal equipment room through a signal cable, and the current consumption of the traffic light is detected by a current sensor in the disconnection detecting device. And the signal from current sensor CT is inputted into a control part (CPU).
In FIG. 2, the current sensor CT is arranged for each monitoring line. However, for example, three current sensors can correspond to five monitoring lines.

  In the disconnection detecting device 1 of the present invention, the display 3 operates the operation buttons 7 and 8 to indicate the current (line current) value flowing through the monitoring lines 1 to 5 of the traffic light, and the instruction information indicating the monitoring line number (here, , Ch1 to ch5) are sequentially displayed. The forward feed button 7 and the reverse feed button 8 as the operation buttons are used for setting a threshold value, and are used for sequentially switching the monitoring lines in order to monitor the disconnection state.

  In response to a signal from the control unit 15, the alarm lamp 4 blinks orange when it is partially broken, blinks red when it is completely broken, lights green during normal operation, and blinks green when the threshold is set. It is supposed to be.

The setting button 5 is used for setting and displaying a threshold value, and the return button 6 is used for resetting after operating the disconnection detection unit 1a for alarm release.
The alarm lamp 4 and the buttons 5 to 8 are connected to the control unit 15 shown in the block diagram of FIG.

  In order to use the disconnection detecting device 1, it is necessary to first connect the monitoring lines (lines 1 to 5) of the traffic light and set a threshold value of the flowing current in order to detect the disconnection for each line. is there. For this purpose, the line 1 is first connected to the terminals of the terminal board 10 on the back surface 9 of the panel, and then the setting button 5 on the front surface 2 of the panel is used to confirm the predetermined current value with the three-digit display 3. A current value serving as a threshold is set in advance. Similarly, the current values of the lines 2 to 5 are set.

  In the disconnection detection device 1 of the present invention, the current value of the monitoring line 1 is displayed on the display 3 immediately after the detection device is turned on. When displaying the current value of another monitoring line, the forward line button 7 or the reverse line button 8 is pressed to switch the monitoring line number.

In the alarm display, the alarm lamp 4 is lit in green when no complete disconnection or half disconnection is detected, and when a half disconnection is detected in any of the monitoring lines 1 to 5, the alarm lamp 4 flashes orange. It will blink red.
When a half disconnection is detected and the display 3 is switched, the monitoring line number (for example, ch1 to ch5) is displayed for 1 to 2 seconds. At this time, since only the monitoring line number in which the half-break is detected blinks, the half-break is known. Moreover, the presence or absence of the detection of a half-break can be confirmed in the state of the alarm lamp 4.

  In FIG. 2, the connection of the monitoring line to the three-digit display or the like in the disconnection detection unit 1a of the present invention will be described with reference to a block diagram.

  The monitoring lines 1 to 5 connected to the respective lamps (signal lamps) of the five-lamp traffic signal change through the current sensor CT, which is a current transformer that captures the change, because the flowing current value changes depending on the disconnection state. The current value is input to the amplifier circuit 11. The output of the amplifier circuit 11 is converted into a digital value by the A / D conversion circuit 12 and input to the control unit 15.

The controller 15 displays a disconnection state on the three-digit display 3 according to a flowchart described later by a program of a predetermined logic circuit. The flash memory stores a control program for monitoring the signal lamp of each traffic light, and the EEPROM stores setting data such as a setting current value of each monitoring line.
When the disconnection state occurs, the relay drive circuit 17 is operated by the output from the control unit 15, the alarm relay ER is activated, the alarm signal is output, and the alarm lamp 4 blinks in orange or red.

(Detection of half-break)
In FIG. 3, a display example of the display 3 when a half-break of a signal lamp is detected will be described. FIG. 3A shows a case where no half-break is detected, and FIG. 3B shows that a half-break is detected in “ch2”.

  In FIG. 3 (A), in the half-break detection process, operations (a) to (d) are sequentially performed. First, immediately after turning on the power to the disconnection detection device 1, the current value of the monitoring line 1 is displayed. In this case, if the current value (a) of 130 mA is displayed and the current value (a) is a normal value (≧ threshold), pressing the forward button 7 in this state will cause the monitoring line number (b) (Ch1) is displayed for about 1 second, and when the forward button 7 is pressed in this state, the monitoring line number (ch2) in (c) is displayed.

  That is, if the forward feed button 7 is further pressed while the monitoring line number 1 is displayed, the monitoring line number is incremented by 1, and the display changes from “ch1” to “ch2”. When the monitoring line number 2 is displayed and the button is not pressed, the current value of the monitoring line is displayed. Further, when the forward button is pressed in this state, the monitoring line number (ch3) is displayed (not shown). By repeating this operation, the monitoring line number (ch4) and the monitoring line number (ch5) are displayed. Displayed in order. When the operation of pressing the forward button 7 is stopped, the current value (d) of the line is displayed. FIG. 3A illustrates the case of the monitoring line number (ch2). When a half-break has not occurred, the display unit 3 simply displays the monitoring line number in a lighting state, and blinks. Don't be.

Next, a case where a half-break is detected will be described with reference to FIG.
FIG. 3B is a display example of the display 3 indicating that there is a half-break in the monitoring line 2. As described above, the current value (a) of the monitoring line is displayed immediately after the disconnection detection device 1 is turned on. In this case, a current value of 130 mA is displayed, and if this current value is a normal value (≧ threshold), pressing the forward button 7 in this state will result in the monitored line number (ch1) in (b). Displayed for about 1 second. When the forward button 7 is pressed in this state, the monitoring line number (ch2) of (c) is flashed.

  Then, the alarm lamp 4 blinks in orange. In this case, the current value is lower than the threshold value, and the blinking display indicates that the monitoring line 2 is in a half-broken state. Further, when the forward button 7 is pressed in this state, the monitoring line number (ch3) is displayed next, and when this operation is repeated, the monitoring line number (ch4) and the monitoring line number (ch5) are displayed in order.

  Depending on whether or not the display of the monitoring line number is flashing, it is possible to know the half disconnection of each line. In the case of a half-break, since the current below the threshold flows, it can be displayed as described above based on that current.

  As described above, when each of the signal lamps or the line thereof is in a half-broken state when the forward button 7 is sequentially pushed, the control circuit 15 sets the program of the logic circuit so that the display of the monitoring line number blinks. By setting to, a half-break can be easily known.

(Total disconnection detection)
Next, referring to FIG. 4, an example in which the state of total disconnection is detected will be described. FIG. 4 shows the state of the monitoring line when the forward button 7 is sequentially pressed as in the case of the half-break described above, and shows the change in the display state due to the button pressing operation. Hereinafter, the order in which which monitoring lines are all disconnected will be described.

The presence / absence of all disconnections can be confirmed by the state of the alarm lamp 4.
If any one of the monitoring lines 1 to 5 is disconnected, even if the forward button 7 is sequentially pressed immediately after turning on the power to the disconnection detection device 1 to notify the degree of urgency, the display 3 In the first display, the line numbers (ch1 to ch5) of all the monitoring lines are displayed blinking. That is, as shown in the right column of FIG. 4A, ch1 first flashes when the forward button 7 is pressed, and then ch2, ch3, ch4, ch5 by the sequential pressing operation of the forward button 7. Flashes.

  In the three-digit display 3, only one of the monitoring line numbers is displayed. For example, if “ch3” is displayed, the current is detected in the monitoring line 3 based on the signal from the traffic light. Detected. After that, since the check of the connection state of the monitoring line is sequentially completed by the setting in the control unit 15, the monitoring line number that is valid (not disconnected) is sequentially turned on from the blinking state after a while. .

  This is because in the row (b), when the forward button 7 is sequentially pressed, the monitoring line (ch3) is lit without blinking, so that the monitoring line (ch3) is normal.

Next, in the column (c), similarly, the monitoring line (ch4), the monitoring line (ch5) in the column (d), and the monitoring line (ch1) in the column (e). Since each of them is in a lighting state without blinking, it can be seen that the monitoring line (ch2) remaining in the blinking display is finally disconnected.
Further, when all the monitoring lines 1 to 5 remain in a blinking state, it is found that the signal cable is disconnected.

  In this way, in the case of a complete disconnection, all the monitoring line numbers flash, then other signals are displayed and the current is detected, so that the monitoring line number is lit and all the signals are displayed. After that, if there is a monitoring line number that is still flashing, this means that all disconnections have occurred on that monitoring line.

Next, how to determine the disconnection state in FIG. 5 will be described with reference to a flowchart.
The traffic signal is monitored at regular intervals for disconnection monitoring within the railway traffic signal system (step S1). During the monitoring in step S1, the current is measured for each monitoring line number of the traffic light (step S2), and the current value for each monitoring line is displayed, for example, on the display 3 of the disconnection detecting device 1 of the present invention ( Step S3).

In step S4, it is determined whether or not there is a disconnection alarm. If the alarm is in progress, the process proceeds to step S5 for determining the disconnection of the detected line, and if not alarmed, the process proceeds to step S6 for determining the disconnection of the detected line.
In step S5, if the current value of the monitoring line is normal (≧ threshold), the process proceeds to step S7 where the process of canceling blinking of the corresponding monitoring line number is performed, and the process ends.

  If the above-described half-break (<threshold), the corresponding line is known, and the process ends. When a transition is made from a half-broken line to a full-broken line, the alarm lamp 4 blinks red (step S12), and all the monitoring line numbers blink (step S13).

  If it is determined in step S4 that the alarm has not been issued, the process proceeds to step S6 to determine disconnection of the detected line. If the current value is normal (≧ threshold), the process ends.

  If it is half-broken (current value <threshold), an output process is performed to notify the alarm (step S8), an alarm lamp blinks in orange (step S9), and the number of the corresponding monitoring line is displayed. The device is blinked (step S10), and the process is terminated.

  If it is determined in step S6 that all disconnections (current value≈0), an output process for notifying an alarm is performed (step S11), a process of blinking red in the alarm lamp is performed (step S12), and all monitoring is performed. The line number is flashed on the display (step S13), and the process ends.

  In the above detection method, when a disconnection alarm is indicated by the alarm lamp, it is determined whether it is a half disconnection or a complete disconnection based on the color of the alarm lamp and the blinking operation. In the case of a half-break, steps S8 to S10 are executed, and in the case of a full break, steps S11 to S13 are executed, so it becomes clear which signal lamp is a half-break or a full break. The failed lamp can be identified according to the indication information of the monitoring line number of the display.

1: disconnection detection device, 2: display panel, 3: indicator, 4: alarm lamp, 5: setting button, 6: return button, 7: forward feed button, 8: reverse feed button, 11: amplifier circuit, 12: A / D conversion circuit, 14: processing unit, 15: control unit, 22: memory unit, ch1 to ch5: monitoring line number, CT: current sensor,

Claims (6)

A method for detecting a half-break or a complete break of a multi-lamp color lamp signal device using a break detection device in which a current sensor is connected to a monitoring line of each signal lamp using an LED as a light emission source,
When any one of the signal lights is disconnected, the state of the alarm lamp of the disconnection detection device determines whether it is a half disconnection or a complete disconnection,
In the case of a partial disconnection, the monitor line of each signal lamp is sequentially switched and the instruction information indicating the monitor line number is displayed on the indicator of the disconnection detector, and the current value flowing through the monitor line is compared with a preset threshold value. By detecting the half-broken signal light,
When all lines are disconnected, the monitoring line number corresponding to each signal lamp is set to the blinking state, and the monitoring line number corresponding to the signal line is detected by detecting the current flowing in the monitoring line of the signal light that has been restored sequentially over time. A method for detecting disconnection of a multi-lamp color lamp traffic light characterized in that the blinking instruction information is sequentially turned on and a signal lamp in which no current flows is finally found. The detection of the half-broken signal lamp includes the step of blinking one of the indication information of the monitoring line number that is sequentially switched in the display unit when the current value is lower than the set threshold value. The disconnection detection method according to claim 1, wherein: The detection of the all-broken signal lamp is performed by setting all the monitoring line number instruction information in a blinking state, sequentially lighting one monitoring line number instruction information displayed on the display, and finally in the blinking state. Including a step of determining whether the remaining monitoring line number signal lights are all disconnected, or whether the line cable is disconnected if all monitoring line number indication information is still flashing. The disconnection detection method according to claim 1 or 2, characterized in that: In the disconnection detecting device in which a current sensor is connected to the monitoring line of each signal lamp using an LED as a light emitting source in order to detect a half disconnection or a complete disconnection of a multi-lamp type color lamp signal device,
An input unit connected to the monitoring line via the current sensor and having an amplifier circuit and an A / D conversion circuit;
Indicator information indicating the monitoring line number of the monitoring line corresponding to each signal lamp, or a display for displaying the current value flowing through the monitoring line;
A control unit that compares input information from a monitoring line connected to each signal light from the input unit and a threshold value of each signal light set in advance in a memory;
An alarm lamp for displaying either half or all broken lines of the monitoring line;
A plurality of operation buttons for displaying the current value displayed on the display or the instruction information;
A failure detection apparatus for a multi-lamp color lamp traffic light, wherein the control unit determines a signal lamp in a half-broken or full-broken state by blinking or lighting the instruction information of the monitoring line number. When the control unit detects a half-break in a signal lamp, the current value is lower than a threshold value set in the memory, so that one of the indication information of the monitoring line number that is sequentially switched in the display unit blinks The failure detection apparatus according to claim 4, wherein a signal to be output is output.   The control unit, when all disconnections are detected, blinks all instruction information of the monitoring line number, sequentially turns on one instruction information displayed on the display, and finally remains in the blinking state 5. The method according to claim 4, further comprising: determining whether the signal light of the monitoring line number is all disconnected, or whether the line cable is disconnected when all the monitoring line number indication information is still flashing. The failure detection apparatus according to claim 5.

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