JP2000323283A - Automatic dimmer for tunnel lighting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve safety, save labor, and improve efficiency of abnormality measures by providing an abnormality compensation mechanism detecting abnormality, when there is something abnormal in an optical receiver and actuating a prescribed safety measurement in a control part connected to a luminance measuring optical receiver installed outside a tunnel and controlling the lighting according to the luminance signal. SOLUTION: A luminance signal of a luminance meter based on an outdoor luminance of a tunnel pit mouth and a temperature signal of a temperature sensor are inputted to a control part 2 from an optical receiver 1 via a cable and an arithmetic unit calculates the luminance value after compensating for the temperature. A switching signal outputted by a control signal according to a control program based thereon is inputted in a lighting load circuit 3 to control dimming of a tunnel lighting device 4. The control grogram is stored in a program ROM so as to output a control signal actuating an abnormality compensation mechanism and an automatic recovery mechanism, while a timer counts a prescribed standby time of a prescribed control. These automatic controls can secure the safety of road traveling and save the electrical charge and human labor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic light control device for tunnel lighting for controlling tunnel lighting.

[0002]

2. Description of the Related Art Tunnel lighting includes tunnel lighting such as basic lighting, entrance / exit lighting, and tunnel outside lighting. Basic lighting is lighting that corresponds to the driver of a car who is in a nearly normal visual state where the lighting state is set in advance according to the time and traffic volume, and the entrance and exit lighting is driving the car due to the difference in brightness inside and outside the tunnel This is illumination for compensating for a delay in adaptation of the eyes of the hand, and the lighting state of the illumination is adjusted by detecting a change in outdoor brightness near the tunnel entrance. In addition, similar to entrance / exit lighting, tunnel pit lighting is used to compensate for the delay in adaptation of the driver's eyes due to differences in brightness inside and outside the tunnel. The detected lighting state is adjusted.

[0003] Such adjustment of the lighting state of the tunnel lighting involves, for the lighting in the tunnel mine, a light receiver installed outside the tunnel for measuring the brightness and mainly controlling the entrance and exit lights, It is made by an automatic light control device for tunnel lighting having a control unit having a function of controlling tunnel lighting in accordance with a luminance signal inputted from a light receiver connected thereto, and tunnel tunnel outside lighting is separately controlled by illuminance. Automatic flashers and timer devices. By these means, the lighting effect required for securing safe and smooth traffic is maintained and unnecessary lighting is suppressed.

In order to further ensure safety, such an automatic light control device for tunnel illumination turns on all lights in the tunnel mine when power is not supplied to the automatic light control device for tunnel illumination due to a power failure, for example. It is designed to work. Furthermore, in order to ensure safety in the event that the light receiver cannot be properly received due to the influence of trees or covered with snow, at the predetermined time, the tunnel mine lighting is turned on regardless of the luminance signal from the light receiver. In some cases, a compensation circuit based on the working time is provided.

[0005]

In order to ensure safe and smooth traffic, even if an abnormality occurs in the automatic light control device for tunnel lighting, the tunnel lighting is always lit so that safety can be ensured. Need to be.
For this reason, the above-mentioned safety measures are taken also in the conventional devices. However, simply turning on all tunnel mine lights does not mean that the lighting conditions in the tunnel are sufficient. Had not been taken.

Further, if an abnormality such as a failure occurs in the light receiver, control cannot be performed until the repair of the light receiver is completed. For example, a separate timer control device is used as an alternative means up to that time. Was used. However,
There was a problem that such a method was troublesome and uneconomical.

SUMMARY OF THE INVENTION In view of the above, the present invention has been made to further enhance safety by compensating for a failure in an automatic light control device for tunnel lighting when a failure occurs, and to save labor and improve efficiency in dealing with the failure. The purpose is to plan.

[0008]

An automatic light control device for tunnel lighting according to the first invention of the present application is provided with a photodetector installed outside a tunnel for measuring luminance, and connected to the photodetector, the photodetector being connected to the photodetector. An automatic dimming device for tunnel illumination having a control unit having a function of controlling tunnel illumination according to a luminance signal input from the device, if an abnormality occurs that hinders normal operation of the light receiver, the abnormality is detected. The control unit is characterized in that the control unit has an abnormality compensation function for detecting and operating a predetermined safety countermeasure function.

The automatic dimmer for tunnel illumination according to the second aspect of the present invention is the automatic dimmer for tunnel illumination according to the first aspect of the present invention, wherein a signal from a light receiver is normally controlled as the abnormality compensation function. When an abnormality that is not input to the unit occurs, a signal transmission abnormality compensation function is provided that detects the abnormality and operates so that a predetermined safety measure function operates.

An automatic light control device for tunnel lighting according to a third aspect of the present invention is the automatic light control device for tunnel illumination according to the first or second aspect of the present invention. In the case where an abnormality that does not enter the optical system occurs, a detector abnormality compensation function is provided that detects the abnormality and operates so that a predetermined safety measure function operates.

Thus, the safety of the tunnel illumination control when the luminance meter type automatic dimmer for tunnel illumination is abnormal can be further improved.

In the operation of the above-mentioned safety countermeasure function, it is possible to set a time zone in which this function operates individually for each of the lights constituting the tunnel lighting, so that an efficient and detailed emergency control can be performed. So this is good. In addition, when a normal signal cannot be input from the light receiver to the control unit, the time period during which the safety countermeasure function operates can be set individually for each of the tunnel illumination lights. Preferably, the operation of the function controls the illumination in the tunnel to be turned on, so that the illumination in the tunnel can be timer-controlled while the light receiver is not operating.

According to a fourth aspect of the present invention, there is provided an automatic light control device for tunnel lighting, wherein the light receiving device is provided outside the tunnel, and is connected to the light receiving device, and controls the tunnel lighting in accordance with a signal input from the light receiving device. An automatic light control device for tunnel lighting having a control unit having a function of performing the operation, when an abnormality that prevents the normal operation of the automatic light control device for tunnel illumination has been eliminated, the resolution of the abnormality is detected and the normal operation is performed. The control unit has an automatic return function for automatically returning to an operation state. As a result, labor can be saved after dealing with the abnormality.

An automatic light control device for tunnel illumination according to a fifth invention of the present application is the automatic light control device for tunnel illumination according to the first, second or third invention, wherein the automatic light control device for tunnel illumination is normal. The control unit is characterized in that when the abnormality that hinders the normal operation is eliminated, the control unit has an automatic return function of detecting the elimination of the abnormality and automatically returning to the normal operation state. These can further improve the safety of tunnel illumination control in the event of an abnormality of the luminance meter type automatic dimmer for tunnel illumination, and can save labor after dealing with the abnormality.

It is preferable that the automatic dimming device for tunnel lighting according to each of the above-mentioned inventions has a configuration in which a program ROM storing a program for operating the abnormality compensation function or the automatic return function is provided in the control unit. .

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be further described with reference to examples of embodiments of the present invention. FIG. 1 is an explanatory diagram for explaining the configuration of an embodiment of the automatic light control device for tunnel lighting of the present invention. The present apparatus comprises a light receiver 1 and a control unit 2. The control unit 2 outputs a control signal to a lighting load circuit 3 in accordance with a change in the field brightness at the tunnel entrance, a change in time, and the like. When the circuit 3 supplies electric power to the tunnel lighting 4, the lighting state of the tunnel lighting 4 is automatically controlled, whereby the safety of road traffic can be ensured, and the power cost and manpower can be saved. Although not shown in the figure, the tunnel underground lighting is also controlled.

FIG. 2 is a schematic structural view showing the structure of the light receiver 1 of the automatic light control device for tunnel lighting according to the present embodiment. The light-receiving part of the light receiver 1 has a cylindrical tube 1 whose tip is obliquely cut.
5 is attached, and a bird-proof needle 16 is attached to the opening of the cylinder 15. A hard glass plate 14 is attached to the light receiving window portion of the attachment portion of the tube 15, and a luminance meter 11 is provided at the back thereof.
And the luminance is measured. further,
A luminance meter 11 is connected to the inside of the light receiver 1, and a circuit board 1 in which a temperature sensor 12, a preamplifier section, and a power supply section are incorporated.
3 from the circuit board 13 to the cable 17.
A luminance signal based on the luminance meter output and a temperature signal based on the temperature sensor output are separately output, and these signals are input to the control unit 2 via the cable 17.
The cable 17 connecting the light receiver 1 and the control unit 2 has a maximum length of 3 km.

The luminance meter 11 has a silicon photodiode as a light receiving element, a viewing angle of 20 degrees and a measuring distance of 50 m.
The light receiver 1 has a temperature characteristic of ± 3% in a temperature range of 0 to 40 ° C. to 200 m, and the light receiver 1 is mounted at a position just before the tunnel entrance separated by a braking stop distance according to the design speed of the tunnel. It is installed at a height of 3m or more with the light receiving part facing the center of the tunnel entrance.

FIG. 3 is a block diagram for explaining the control function of the present embodiment. The control unit 2 includes a storage device 22 in which various data and programs are stored, an arithmetic device 21 that outputs a control signal based on these data and programs,
A timer 24 for counting time and time and a switching circuit 23 are provided. The storage device 22 includes a program ROM in which a program for operating the abnormality compensation function and the automatic return function is stored. A control program for operating to output a determined control signal to the switching circuit 23, data for performing this control, and the like are stored.

As abnormalities that hinder the normal operation of the light receiver, there are various things such as a failure of the light receiver, interruption of light incidence to the light receiving portion by snow or trees, disconnection of a cable, and the like. Various methods for setting the functions are also conceivable. Similarly, various methods of operating the return function are conceivable. For this reason, storing a program for operating the abnormality compensation function or the automatic return function in the program ROM and providing the program in the control unit enables easy correspondence to various cases, This is preferable because the setting can be easily changed during use.

The arithmetic unit 21 has a function of outputting a control signal based on a program for operating an abnormality compensation function and an automatic return function stored in a program ROM, and the temperature signal based on the temperature correction data of the luminance signal. A function of calculating a luminance that has been corrected according to the temperature in the light receiver from the luminance signal and the luminance signal, and when performing a predetermined control,
The timer 24 counts a predetermined standby time, and in conjunction therewith, has a function of outputting a control signal for controlling a predetermined tunnel illumination when the luminance signal continuously satisfies a predetermined condition.

The operation of the present apparatus will be described below. In the present apparatus, when a luminance signal based on the field luminance of the tunnel entrance from the luminance meter 11 of the light receiver 1 and a temperature signal indicating the temperature inside the light receiver 1 from the temperature sensor 12 are input to the control unit 2, these signals are output. Is input to the arithmetic unit 21,
The arithmetic unit 21 stores the storage device 2 based on the input temperature signal.
2, a correction coefficient corresponding to the temperature is selected based on the temperature correction data in 2, and the luminance value obtained from the luminance signal is corrected.
Calculate the true luminance value. Further, the arithmetic unit 21 outputs a control signal corresponding to the control program to the switching circuit 23 based on the true luminance value, and the switching circuit 23 outputs a switching signal for controlling the operation of the lighting load circuit 3 based on the control signal. I do. Then, a predetermined lighting load circuit electromagnetic contactor coil is operated by the switching signal, whereby a predetermined lighting load circuit is operated, and the dimming control of the tunnel lighting based on the outdoor brightness of the tunnel entrance is performed.

Further, in the case of the present apparatus, when a specific circuit in the lighting load circuit 3 is operated, the timer 24 is configured to operate in conjunction therewith. That is, in order to remove the influence of the headlight, the output operation of the control signal to the specific circuit is performed as follows. When the luminance signal from the light receiver 1 satisfies a predetermined condition, the arithmetic unit 21 sends a signal to the timer 24 to operate the timer 24. Then, the timer 24 counts a preset time, and outputs a count end signal to the arithmetic unit when the predetermined time is counted. If the luminance signal continuously satisfies the predetermined condition until the end signal is received, the arithmetic unit 21 outputs a control signal for operating the specific circuit to the switching circuit 23. If the luminance signal does not satisfy the predetermined condition before receiving the count end signal, the timer 24
A signal for stopping and resetting the operation of
And return to the original state.

The abnormality compensating function and the resetting function operate when an abnormality that hinders the normal operation occurs. In the case of the present embodiment, as an abnormality in which a signal from the light receiver is not normally input to the control unit, cable damage such as disconnection of a cable can be considered, for example, when a signal is transmitted wirelessly without using a cable. May also cause radio interference. In detecting such an abnormality, for example, a constant signal is always output from the light receiver to the control unit, the presence or absence of this signal input is detected, and if there is no signal input, it is assumed that the signal is disconnected. Done by the method.

As an abnormality in which light does not normally enter the light receiver, it is conceivable to interrupt light incidence on the light receiving unit due to snow or trees, and the abnormality is detected, for example, by detecting the lowest detected in advance at each time. A luminance value is obtained and stored in the storage device 22.
This is performed by a method of comparing the luminance signal with the data by the arithmetic unit 21 and determining that the luminance signal is abnormal when the value is smaller than this value.

Abnormalities that hinder the normal operation of the automatic light control device for tunnel lighting regardless of the luminance meter type and the illuminance meter type include:
In addition to the abnormality related to the photodetector, there is a stop of power supply to the control unit due to a power supply abnormality. Is detected by a method such as detection of return to a predetermined size, detection of power input, and the like, all of which are determined by the arithmetic unit. The return operation is performed, for example, after the abnormality is detected, by operating the timer 24 and returning after a predetermined time has elapsed.
As for this operation, it may be possible to detect that the abnormality has been resolved and to return immediately, but it is preferable to do so since the return can be surely confirmed.

[0027]

The present invention will be described more specifically below using an embodiment apparatus having the same configuration as described above. The device of this example is a device having a configuration similar to that described in the above embodiment,
The lighting load circuit 3 includes a fine weather A circuit, a fine weather B circuit, a cloudy sky A circuit, a cloudy sky B circuit, a daytime circuit, a day / night circuit, a constant circuit, a midnight lighting circuit, an outside lighting circuit, and an outside lighting circuit.
These circuits are respectively connected to illumination load circuit electromagnetic contactor coils, and these coils are operated by a signal output from the switching circuit 23 so that each circuit operates. A signal output from the switching circuit 23 for operating each circuit is output to the arithmetic unit 21
Is output based on the control signal from the controller. The arithmetic unit 21 operates according to a control program preset in the storage unit 22.

FIG. 4 is a diagram showing ON / OFF conditions of each circuit set in the control program and an operation example. In the figure, the shaded area indicates the ON state, and L in each condition represents a numerical value of the set outdoor luminance. By changing this numerical value, 500 cd /
It can be set in the range of m ^{2 to} 8000 cd / m ² .

Each of the fine weather A, B, cloudy weather A, and B circuits is a circuit for controlling illumination installed in the tunnel entrance (exit) section, and is turned on and off according to the predetermined outdoor brightness of the tunnel entrance. It has become. The daytime circuit is a circuit for controlling lighting installed in the middle of the tunnel, and is turned on and off in accordance with a predetermined outdoor brightness at the tunnel entrance. Both day and night circuits and constant circuits are circuits that control lighting installed throughout the tunnel, and daytime circuits are lighting and lighting that are set using the timer circuit 24.
The circuit is controlled by the light-off time (T0) so that the circuit is always turned on. The underground lighting circuit is a circuit for controlling the underground lighting, and the lighting and extinguishing are controlled according to the lighting and extinguishing times set by using the timer circuit 24 and the outdoor brightness at a predetermined tunnel entrance. I have. The midnight lighting circuit and the underground lighting circuit are circuits for controlling the lighting in the tunnel mine and the lighting outside the tunnel, respectively, to save energy. The lighting is controlled in accordance with the lighting / lighting out time set by using the timer circuit 24. It has become. In this embodiment, O is used to prevent headlights.
A standby time of 60 seconds is set for the tunnel pit lighting circuit where the N condition is smaller than 50 cd / m ² and the tunnel pit lighting circuit where the OFF condition is smaller than 50 cd / m ^2. For example, L = 500 ON if set
In the cloudy sky B circuit where the condition becomes 25 cd / m ² or more, even if a luminance signal indicating 30 cd / m ² is input from the luminance meter, the cloudy sky circuit is not immediately turned ON, and 60 seconds after this luminance signal is input The ON control is performed only when the luminance signal indicates a value of 25 cd / m ² or more.

Next, the operation of the present apparatus when an abnormality occurs in the present apparatus will be described below. A series of operations when an abnormality described below occurs includes a control program provided in the storage device 22, an arithmetic device 21 that operates based on the control program, and a timer 24 that operates in response to a command from the arithmetic device. This is performed by the abnormality compensation circuit composed of

When the device becomes uncontrollable due to a power failure,
If power is not supplied to this device, a lighting command is issued to all circuits. When the cable 17 connecting the control unit 2 and the photodetector 1 is broken, a failure signal is output from the control unit 2 to an external control room or the like, and the photodetector abnormality display LED provided in the control unit 2 is turned on. Then, it operates to control lighting of each lighting load circuit according to the following safety countermeasure function. Even when a failure such as snowfall occurs on the entire surface of the light receiver 1 and the light does not normally enter, a failure signal is output from the control unit 2 to an external control room or the like, and the light receiver provided in the control unit 2 The abnormality indicator LED is turned on, and operates to control lighting of each lighting load circuit in accordance with the following safety countermeasure function. Further, during the operation of the safety countermeasure function, the illumination command division display LED provided in the control unit 2 is blinked to indicate this.

In the present embodiment, the safety countermeasure function is a function that operates when any failure occurs in the photodetector 1, and the fine weather A, B, cloudy sky A, B, daytime circuit, and underground lighting circuit are the safety countermeasure functions. By setting in advance the times at which ON-OFF control is to be performed, if the brightness value falls below 16 cd / m ² within this set time, the brightness is reduced by the light receiving device 1 for disconnection, snow cover, etc. as described above. Circuit is determined to be abnormal, and the circuit that satisfies this condition is turned ON (lighting control).
(Turn off). For example, if the luminance value is less than 16 cd / m ^{2 at} a certain time, this time is within the cloudy weather A, B, the time when the ON / OFF control of the daytime circuit is performed, and the fine weather A, B, the underground lighting circuit If the time is not within the time for ON-OFF control, a failure signal is output, and only the cloudy weather A, B, and daytime circuits are ON (lit).

That is, the abnormality compensating function of the present embodiment is capable of setting a time period during which the safety countermeasure function operates for each lighting circuit in the lighting load circuit, and a luminance value set in advance in these time periods. When a luminance value less than the detected luminance value is detected, it is determined that an abnormality has occurred and the abnormality is notified, and only the lighting circuit in which a luminance value less than the preset luminance value is detected in each set time zone is turned on. Or O
FF control is performed. As described above, the power consumption can be reduced by individually operating the safety countermeasure functions.

Further, in the apparatus of the present embodiment, after the above-mentioned safety countermeasure function is activated, the luminance value satisfying the ON (OFF in the underground lighting circuit) condition in the normal operation set in each circuit (in this case, When the luminance value shown in FIG. 4 is detected, the operation of the safety countermeasure function of the circuit that satisfies this condition is released. In this way, by automatically returning, labor saving can be achieved. It should be noted that this release is preferably performed when a luminance value that satisfies the above condition for a predetermined time or more is confirmed.

[0035]

According to the automatic light control device for tunnel lighting of the present invention, a sufficient compensation operation is performed when an abnormality occurs,
Tunnel traffic can be made even more secure, labor can be saved when dealing with abnormalities, and efficiency can be improved by reducing power consumption.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a configuration of an embodiment of an automatic light control device for tunnel lighting according to the present invention.

FIG. 2 is a schematic configuration diagram showing a structure of a light receiver of the embodiment of the automatic light control device for tunnel lighting of the present invention.

FIG. 3 is a block diagram for explaining a control function of the embodiment of the automatic light control device for tunnel lighting of the present invention.

FIG. 4 shows the O of each circuit set in the control program of the embodiment of the automatic dimmer for tunnel lighting of the present invention.
FIG. 9 is a diagram illustrating N, OFF conditions, and operation examples.

[Description of Signs] 1 Light receiver 2 Control unit 3 Lighting load circuit 4 Tunnel light 11 Luminance meter 12 Temperature sensor 21 Computing device 22 Storage device 23 Switching circuit 24 Timer

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3K073 AA28 AA70 AA83 AA86 AA92 BA29 BA31 CA05 CD03 CD05 CE06 CG02 CG06 CG15 CG23 CH02 CH21

Claims (6)

[Claims] 1. A photodetector installed outside a tunnel for measuring luminance, connected to the photodetector and having a function of controlling tunnel illumination according to a luminance signal input from the photodetector. An automatic dimming device for tunnel lighting having a section, when an abnormality occurs that hinders normal operation of the light receiver, the control section has an abnormality compensation function of detecting the abnormality and operating a predetermined safety countermeasure function. An automatic light control device for tunnel lighting, comprising: 2. An abnormality compensation function according to claim 1, wherein an abnormality occurs in which a signal from the light receiver is not normally input to the control unit.
2. The automatic light control device for tunnel lighting according to claim 1, further comprising a signal transmission abnormality compensation function that detects the abnormality and operates so that a predetermined safety measure function operates. 3. An abnormality compensating function is provided as the abnormality compensating function, wherein when an abnormality occurs in which light does not normally enter the light receiver, the abnormality is detected and a predetermined safety countermeasure function operates. 2. The method according to claim 1, wherein
Or the automatic light control device for tunnel lighting according to 2 above. 4. An automatic tunnel lighting system having a photodetector installed outside a tunnel and a control unit connected to the photodetector and having a function of controlling tunnel illumination in accordance with a signal input from the photodetector. An auto-return function, which is a dimmer and detects an elimination of the abnormality and automatically returns to a normal operation state when an abnormality that prevents normal operation of the tunnel illumination automatic dimmer is eliminated. An automatic light control device for tunnel lighting, which is provided in a control unit. 5. The control unit has an automatic return function of detecting the elimination of the abnormality and automatically returning to a normal operation state when an abnormality that prevents normal operation of the automatic light control device for tunnel lighting is eliminated. 4. The automatic light control device for tunnel lighting according to claim 1, wherein the automatic light control device is provided. 6. A program RO in which a program for operating the abnormality compensation function or the automatic return function is stored.
2. The apparatus according to claim 1, wherein M is provided in the control unit.
The automatic light control device for tunnel lighting according to 2, 3, 4 or 5.