KR20090011782A - Road marker contorl device and method - Google Patents

Abstract

A road stud control device and the method are provided to secure driver's field of view and to be helpful to prevent an accident in the bad weather by controlling a light emitting diode(LED) in mist and lighting automatically to a daytime brightness level. A road stud control device comprises a surrounding environment sensing unit(30) distinguishing the mist generation with the detection of the temperature and humidify of the surrounding environment and the daytime/nighttime with the detection of illumination intensity, and outputting on/off control signals of an LED road stud, and a control unit(40) distinguishing the on/off control signals of the LED road stud outputted from the surrounding environment sensing unit and supplying power at a specific voltage to the LED road stud or cutting off the power supply.

Description

ROAD MARKER CONTORL DEVICE AND METHOD}

The present invention relates to a road marker bottle control device and method for controlling the LED safety guidance light (road marker bottle) installed in the central divider, tunnel, underground roadway, fog area of the road, more specifically, brightness according to day / night When the Glare index increases due to the surrounding environment, the operator can easily operate it by the dial operation button.In the event of fog, the LED is controlled to automatically turn on the daytime brightness. The present invention relates to a road sign control device and a method for helping to prevent accidents caused by bad weather by securing a visual field of the road.

In general, the driving direction of the road is indicated on roads, tunnels, underground roads, foggy roads, sidewalks, and central dividers where vehicles pass through, or drivers or pedestrians easily identify dangerous areas such as traffic accidents or construction at night. Safety induction lamps (road markers) are installed to prevent safety accidents.

However, such safety induction lamps are generally free of day / night brightness control with a constant size of brightness, which causes a problem for the driver to secure the driver's vision with sudden brightness when the night brightness of the safety induction lamp is the same as daytime.

In addition, the existing safety induction lamps do not have automatic on / off (ON / OFF) function when the fog occurs in the fog hazard area, the administrator had to check whether the fog occurs directly to operate the safety induction lamp was inconvenient.

In addition, when the reflector of the retro-reflector is damaged or discolored or contaminated by scattering dust, it should be quickly replaced or cleaned to perform its proper function. no.

In addition, if the cleanliness is not maintained, the brightness of the light is also not maintained, so in bad weather conditions such as fog or snowstorm, the reflective function of the reflector is significantly degraded, and the driver may not recognize it correctly, which may cause an accident. have.

In Korean Utility Model Application Nos. 20-2004-0005788 and 20-2005-0019049, light emitting diodes (LEDs) are installed in safety induction lamps for the convenience of maintenance and management in order to solve the problems of the existing retroreflective reflectors. Disclosed is a safety induction lamp.

In particular, a safety induction lamp using a light emitting diode receives power from the outside through a power line, or stores the converted electrical energy using a solar panel in a storage battery provided therein and uses it as a power source.

However, by only supplying power from the outside through the power line and failing to adjust the brightness of the LED safety induction lamp to suit the surrounding conditions such as day / night or fog, the driver's discomfort Glare index is not only increased, There is a problem that the occurrence is large.

Therefore, an object of the present invention is to solve the above problems, and when the use of the safety induction lamp is unnecessary during the day in accordance with the road situation has an automatic ON / OFF function, in supplying power to the safety induction lamp using a light emitting diode It allows you to adjust the brightness of the lights stepwise during the day and at night, and automatically supplies power to the LED safety induction lamp during the daytime fog so that it can be turned on at the maximum brightness. It is to provide a road sign control device and a method for minimizing the disturbance of the clock by the rare.

According to one aspect of the road sign bottle control apparatus according to the present invention for achieving the above object, the on / off of the LED road sign bottle by judging whether the fog occurs by sensing the temperature and humidity of the surrounding environment and day / night through the illumination detection A surrounding environment sensing unit for outputting an off control signal, and a controller for determining an on / off control signal of the LED road marking bottle output from the surrounding environment sensing unit and supplying or blocking power of a predetermined voltage to the LED road marking bottle. It features.

The ambient environment sensing unit includes a temperature sensor for sensing a temperature of the surrounding environment, a humidity sensor for sensing the humidity of the surrounding environment, and an illumination sensor for sensing the illumination of the surrounding environment.

The ambient environment sensing unit outputs an ON control signal of the LED road sign bottle when the temperature value and humidity value detected by the temperature sensor and the humidity sensor are a temperature value and a humidity value within a fog generation condition range.

The ambient environment sensing unit recognizes daytime when the illuminance value detected by the illuminance sensor is greater than a predetermined reference illuminance value and outputs an off control signal of the LED road sign bottle, and recognizes it at night when it is smaller than the preset reference illuminance value. To output the ON control signal of the LED road beacon.

When the on control signal of the LED road sign bottle is output from the illuminance sensor, a brightness control unit for adjusting the brightness of the LED road sign bottle by a pulse width modulation (PWM) voltage control method.

The brightness controller is a time ratio controller for adjusting the ON / OFF time rate (Duty rate) for controlling the brightness of the LED road sign bottle, PWM for outputting the output pulse according to the time ratio adjusted by the time ratio controller A voltage regulator for controlling an input voltage of the LED safety induction lamp by generating a voltage drop by a driving voltage when a voltage is applied to the diode by using a generator, an output pulse output from the PWM generator and the voltage regulator And a mixer for mixing the regulated constant voltage and outputting the mixed signal to the LED road sign.

On the other hand, according to one aspect of the road sign bottle control method according to the present invention for achieving the above object, the process of determining whether the fog occurs by detecting the temperature and humidity of the surrounding environment through the temperature sensor and the humidity sensor, and the determination As a result, when the fog occurs, the on-control signal of the LED road beacon on the side of the load is output, and if the fog does not occur, detecting the illumination of the surrounding environment through the illumination sensor to determine whether it is day / night, and as a result of the determination, daytime In the case of the output signal off the control of the LED road beacon, characterized in that the process of outputting the on control signal of the LED road beacon at night.

When the detected temperature value and humidity value are a temperature value and a humidity value within a fog generation condition range, an ON control signal of the LED road sign bottle is output.

When the detected illuminance value is greater than the preset reference illuminance value, the control unit recognizes it as daytime and outputs an off control signal of the LED road sign bottle. Outputs

When the on control signal of the LED road sign bottle is output from the illuminance sensor, the brightness of the LED road sign bottle is controlled by a pulse width modulation (PWM) voltage control method.

In the case where the sensing by the temperature sensor and the humidity sensor and the sensing by the illuminance sensor are impossible, the method may further include controlling the LED road marking bottle by a control signal input from the outside.

According to the present invention, by detecting the temperature and humidity of the surrounding environment when the fog occurs in the fog hazard area during the day, by automatically lighting the LED safety induction light, the driver can prevent the chaos of the driving line to prevent the accident risk in advance, At night, the brightness of the light can be dimmed to minimize the driver's disturbance caused by the driver's discomfort glare.

In addition, the LED safety induction lamp is automatically turned OFF during the day and ON at night by discriminating day / night by detecting the illumination of the surrounding environment, so that unnecessary power supply can be blocked for more efficient management. have.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, detailed descriptions of preferred embodiments of the present invention will be described with reference to the accompanying drawings. It should be noted that reference numerals and like elements among the drawings are denoted by the same reference numerals and symbols as much as possible even though they are shown in different drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a view showing the configuration of a road sign bottle control apparatus according to the present invention, Figure 2 is a view showing an operation example of the temperature / humidity sensor of the ambient environment sensing unit of Figure 1, Figure 3 is a surrounding environment sensing unit of Figure 1 4 is a diagram illustrating an operation example of an illuminance sensor, and FIG. 4 is a diagram illustrating a configuration for automatically adjusting brightness by a PWM method in the brightness controller of FIG. 1, and FIG. 5 is a diagram illustrating a circuit configuration of the duty controller of FIG. 4. 6 is a diagram illustrating a circuit configuration of the voltage adjusting unit of FIG. 5.

As shown in FIG. 1, the present invention provides a commercial AC power supply unit 10, a switching mode power supply (SMPS) 20, an ambient environment sensing unit 30, and an automatic voltage control unit 40. ), A brightness controller 50, a load side LED safety induction lamp (road sign bottle) 60, and an external signal input unit 70.

The commercial AC power supply unit 10 supplies AC 220V AC power to a switching mode power supply (SMPS) 20.

The switching mode power supply (SMPS) 20 converts the AC electricity supplied from the commercial AC power supply unit 10 into direct current and supplies a constant DC voltage to the automatic voltage controller 40.

Ambient environment sensing unit 30 is a sensing unit for sensing temperature, humidity, and illumination detected in the field, the temperature sensor 31 for sensing the temperature, the humidity sensor 32 for sensing the humidity and the surrounding environment It is configured to include an illumination sensor 33 for measuring the amount of light.

That is, the ambient environment sensing unit 30 determines whether the fog occurs in the fog danger area according to the temperature value detected by the temperature sensor 31 and the humidity value detected by the humidity sensor 32, and the fog is generated. If it is determined, the ON control signal for the load-side LED safety induction lamp 60 is output to the automatic voltage controller 40.

In addition, the ambient environment sensing unit 30 determines the day / night by the amount of light measured by the illuminance sensor 33 to provide an ON / OFF control signal for the LED safety induction lamp 60 according to the situation. Output to the automatic voltage control unit 40.

Looking at the operation of each sensor in more detail, as shown in FIG. 2, the temperature value detected by the temperature sensor 31 is amplified by the amplifier 34a and converted to a digital value by the ADC 35a and then the CPU 36. The humidity value detected by the humidity sensor 32 is also amplified by the amplifier 34b, converted into a digital value by the ADC 35b, and then transferred to the CPU 36.

Accordingly, the CPU 36 converts the temperature value and the humidity value transmitted from the temperature sensor 31 and the humidity sensor 32 into percentages and performs arithmetic processing, and performs fog based on the arithmetic temperature and humidity values. When it is determined that the fog is generated by determining whether the occurrence occurs, the ON control signal for the LED safety induction lamp on the load side is output to the automatic voltage controller 40.

In particular, whether the fog is generated can be determined by checking whether the calculated temperature value and the humidity value are within the fog generation condition temperature value and humidity value range for generating the fog.

In addition, as shown in FIG. 3, the light quantity value of the ambient environment measured by the illuminance sensor 33 is amplified by the amplifier 37 and transmitted to the comparator 38, and the comparator 38 compares the amplified value with a preset reference value. If the amplified value is larger than the reference value, the controller recognizes it as daytime and outputs the OFF control signal for the LED safety induction lamp to the automatic voltage controller 40. If the amplified value is smaller than the reference value, it is recognized at night. The ON control signal for the load side LED safety induction lamp is output to the automatic voltage controller 40.

That is, in the present invention, the LED safety induction lamp is automatically turned on at the maximum brightness by using the temperature sensor and the humidity sensor when the fog occurs in the fog danger area to ensure the driver's vision. Since the lighting is ineffective during the day, it causes energy loss. Therefore, the LED safety induction lamp is automatically turned off during the day and turned on at night according to the change of the surrounding environment by using the illumination sensor to prevent this. To make it possible.

The automatic voltage controller 40 switches the switching mode power supply (SMPS) 20 according to an on / off control signal for the load-side LED safety induction lamp transmitted from the surrounding environment sensing unit 30. The constant voltage supplied from the load side LED safety induction lamp (road beacon) 60 is supplied or cut off so that the load side LED safety induction lamp can be turned on / off (ON / OFF).

That is, the automatic voltage control unit 40 is supplied from the switching mode power supply (SMPS) 20 when the ON control signal for the load-side LED safety induction lamp is transmitted from the surrounding environment sensing unit 30. Allow a constant voltage to be supplied to the load-side LED safety induction lamp 60, and if an OFF control signal for the load-side LED safety induction lamp is transmitted, it is supplied from a switching mode power supply (SMPS) 20. Blocking a constant voltage is to prevent a constant voltage can be supplied to the load-side LED safety induction light (60).

The brightness controller 50 is to adjust the brightness of the LED safety induction lamp 60 on the load side, and in particular, the pulse width modulation (Pulse Width) when the LED safety induction lamp located in the tunnel is lit at night or in the daytime of the LED safety induction lamp 60. Modulation: PWM) to adjust the brightness of the LED safety induction lamp (60) by the automatic adjustment method or manual adjustment method by dial operation.

That is, as shown in Figure 4, the brightness control unit 50 of the present invention is the brightness of the load-side LED safety induction lamp 60 by the automatic adjustment method by the pulse width modulation (PWM) at night lighting or lighting in the tunnel during the daytime It is adjusted, and comprises a duty controller 51, a PWM generator 52, a voltage regulator 53 and a mixer 54.

The duty controller 51 adjusts the ON / OFF time rate (Duty rate) in a state where the resistance value is fixed to adjust the brightness of the LED safety induction lamp 60 as shown in FIG. 5.

The PWM generator 52 outputs an output pulse according to the time ratio adjusted by the duty controller 51 to the mixer 54.

The voltage regulator 53 adjusts the input voltage of the LED safety induction lamp 60 by causing a stable 0.7V voltage drop by the driving voltage when a voltage is applied to the diode using a diode as shown in FIG. 6.

The mixer 54 mixes an output pulse output from the PWM generator 52 and a predetermined voltage adjusted by the voltage regulator 53 and outputs a mixed signal to the load side, thereby providing the LED safety induction lamp (road sign bottle) 60. Allow the brightness to be adjusted.

In addition, in order to manually adjust the brightness of the LED safety induction light, the brightness control diode circuit of FIG. 6 causes a voltage drop caused by the diode driving voltage, and the operator easily operates the dial to adjust the brightness step by step, thereby causing the retroreflector to be scattered by dust or the like. When the reflector is damaged or faded or contaminated, the operator can easily adjust the brightness, and thus, when cleaning the inside of the tunnel, the LED safety induction lamp can be reset to the initial brightness level to easily manage the LED safety induction lamp.

That is, if the LED safety induction light is turned on at night when the brightness of the LED lights up during the day, it may be an unpleasant glare in the driver's field of view due to the ambient brightness. The brightness can be adjusted at night.

The load side LED safety induction lamp 60 is turned on or off by ON / OFF control by the voltage supply and interruption of the automatic voltage control unit 40, in particular, the lighting of the LED safety induction lamp installed in the tunnel at night or daytime. At the time, the light is dimmed by the automatic adjustment method of the pulse width modulation (Pulse Width Modulation: PWM) of the brightness control unit 50 or the manual adjustment method of the dial operation so that no unpleasant glare occurs.

The external signal input unit 70 is for ON / OFF control of a street light or other light emitting device other than the load side LED safety induction lamp 60, and when the input external signal is transmitted to the automatic voltage controller 40, Or other light emitting devices are supplied with a constant voltage or cut off to turn on or off the street lights or other light emitting devices.

That is, the external signal input unit 70 is controlled by the load side LED safety induction lamp 60 by transmitting an external signal input from the outside to the automatic voltage controller 40 in the case where it is impossible to sense through the ambient environment sensing unit 31. To be possible.

7 is a view showing a road sign control method according to the present invention.

As shown in FIG. 7, the temperature sensor and the humidity sensor detect the temperature and humidity of the surrounding environment, in particular, a fog danger area (S10), and convert the data on the detected temperature and humidity into a percentage, and the like (S20). do.

Subsequently, it is determined whether fog occurs based on the calculated temperature value and humidity value (S30). In this case, whether the fog occurs can be determined by checking whether the calculated temperature value and the humidity value are within the fog generation condition temperature value and humidity value range for generating the fog.

As a result of the determination, when it is determined that the fog has occurred, a predetermined voltage is continuously supplied (S40) so that the load-side LED safety induction lamp is turned on at maximum brightness (S50).

That is, since the LED safety induction lamp installed in the fog danger area is an external environment such as a bridge, it is turned off during the day and is turned on at night, but when the fog is generated, it is turned on at the maximum brightness even during the day.

However, when it is determined that the fog does not occur in the process of determining whether the fog has occurred in step S30 by detecting the illumination of the surrounding environment through the illumination sensor (S60) to determine whether it is day or night by the detected illumination value (S70) do. At this time, judging whether the input illuminance value is daytime or nighttime is compared with the input illuminance value and the preset reference illuminance value and recognized as daytime if the input illuminance value is larger than the reference illuminance value, and if it is less than the reference illuminance value, nighttime Will be recognized.

As a result, in the daytime, the LED safety induction lamp is turned off (S80) by outputting an OFF signal to turn off the LED safety induction lamp in the daytime and cutting off the power supply of a certain voltage. The ON signal for lighting is output to supply a constant voltage by PWM control so that the LED safety induction lamp of the load side can be dimly lit (S90).

In particular, in the daytime, the LED safety induction lamp located in the tunnel is controlled so that the LED safety induction lamp is brightly lit because the illumination value detected by the illumination sensor is recognized at night because it is smaller than the reference illumination value.

In the above, specific preferred embodiments of the present invention have been illustrated and described. However, the present invention is not limited to the above-described embodiment, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention attached to the claims. will be.

1 is a view showing the configuration of a road sign bottle control apparatus according to the present invention.

FIG. 2 is a diagram illustrating an example of an operation of a temperature / humidity sensor of an ambient environment sensing unit of FIG. 1.

3 is a diagram illustrating an operation example of an illuminance sensor of an ambient environment sensing unit of FIG. 1;

4 is a view showing a configuration for automatically adjusting the brightness in the PWM method in the brightness adjusting unit of FIG.

FIG. 5 is a diagram illustrating a circuit configuration of a duty controller of FIG. 4. FIG.

6 is a diagram illustrating a circuit configuration of the voltage adjusting unit of FIG. 5.

7 is a view showing a road sign control method according to the present invention.

Explanation of symbols on the main parts of the drawings

10: commercial AC power supply 20: switching mode power supply

30: ambient environment sensing unit 40: automatic voltage control unit

50: brightness control unit 60: LED safety induction light (road sign bottle)

70: external signal input unit

Claims (11)

Surrounding environment sensing unit for outputting the on / off control signal of the LED road sign bottle by judging whether the fog occurs by sensing the temperature and humidity of the surrounding environment and day / night by sensing the illumination; And a controller configured to determine an on / off control signal of the LED road sign bottle output from the surrounding environment sensing unit and to supply or cut off power of a predetermined voltage to the LED road sign bottle. The method of claim 1, The surrounding environment sensing unit, A temperature sensor for sensing the temperature of the surrounding environment, A humidity sensor for sensing humidity in the surrounding environment, Road marker bottle control device comprising an illumination sensor for sensing the illumination of the environment. The method of claim 2, The surrounding environment sensing unit, And a temperature control signal of the LED road sign bottle when the temperature value and the humidity value detected by the temperature sensor and the humidity sensor are a temperature value and a humidity value within a fog generation condition range. The method of claim 2, The surrounding environment sensing unit, When the illuminance value detected by the illuminance sensor is greater than a preset reference illuminance value, the LED is recognized as a day and outputs an off control signal of the LED road sign bottle, and when it is smaller than the preset reference illuminance value, the LED road sign bottle is recognized at night. Road sign bottle control device, characterized in that for outputting an on control signal. The method of claim 4, wherein When the on control signal of the LED road sign bottle is output from the illuminance sensor, road sign bottle control further comprises a brightness control unit for adjusting the brightness of the LED road sign bottle by a pulse width modulation (PWM) voltage control method Device. The method of claim 5, The brightness control unit, A time rate control unit for adjusting an ON / OFF time rate (Duty rate) for controlling the brightness of the LED road sign bottle; A PWM generator for outputting an output pulse according to a time ratio adjusted by the time ratio controller; A voltage regulator for controlling an input voltage of the LED safety induction lamp by causing a voltage drop by a driving voltage when a voltage is applied to the diode using a diode; And a mixer for mixing the output pulse output from the PWM generator and a predetermined voltage controlled by the voltage regulator to output a mixed signal to the LED road marking bottle. Detecting the temperature and humidity of the environment through the temperature sensor and humidity sensor to determine whether the fog occurs, In the determination result, when the fog occurs, outputs the on-control signal of the LED road beacon on the load side, if the fog does not occur by detecting the illumination of the surrounding environment through the illumination sensor to determine whether day / night, The determination result, the road sign bottle control method comprising the step of outputting the control signal of the LED road sign bottle during the day, and outputs the on control signal of the LED road sign bottle at night. The method of claim 7, wherein And if the detected temperature value and humidity value are a temperature value and a humidity value within a fog generation condition range, outputting an ON control signal of the LED road marker bottle. The method of claim 7, wherein When the detected illuminance value is greater than the preset reference illuminance value, the control unit recognizes it as daytime and outputs an off control signal of the LED road sign bottle. Road marker bottle control method characterized in that it outputs. The method of claim 7, wherein And when the on control signal of the LED road sign bottle is output from the illuminance sensor, controlling the brightness of the LED road sign bottle by a pulse width modulation (PWM) voltage control method. The method of claim 7, wherein In the case where it is impossible to detect the temperature sensor and the humidity sensor and the illumination sensor, the road sign bottle control method further comprises the step of controlling the LED road sign bottle by a control signal input from the outside.

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