KR100988593B1 - Signboard - Google Patents

Abstract

PURPOSE: A signboard is provided to automatically the color change of the signboard through change of the color of the signboard by using the measurement of environmental parameters outdoor. CONSTITUTION: If the difference of an initial dry bulb temperature value and a dry bulb temperature value after one hour is less than 10 degrees, a color tone is maintained, and if not, a color tone is compensated according to temperature and wet-bulb temperature value is measured. If the difference of an initial dry bulb temperature value and a dry bulb temperature value after one hour is less than 5 degrees, a color tone is maintained. If the difference of an initial dry bulb temperature value and a wet-dry bulb temperature value after one hour is over 5 degrees, a color tone is compensated.

Description

Color conversion billboard using color control system according to outdoor environmental factors measured value {SIGNBOARD}

The present invention measures the external environmental factors such as solar radiation, temperature, humidity, wind speed through a sensor, and corrects the temperature according to the measured value, the visual to induce automatic color change of the LED billboard according to the corrected temperature value It relates to a color conversion LED billboard.

Color is information that affects people's emotions, and many scholars have studied the relationship between understanding color and emotion, psychology, emotion, and personality. Emotion blue is depressed and sad.

As such, the range of the main colors for each emotion affecting a person's emotion is shown in Table 1 below.

Color (H) [Unit: °] Saturation (S) Brightness (V) joy
22-45 0.65-1.0 0.7 ~ 1.0 45-70 0.65-1.0 0.7 ~ 1.0 sadness
186-278 0.2-0.65 0.2-0.7 22-45 0.2-0.65 0.2-0.7 anger 330-22 0.65-1.0 0.7 ~ 1.0 fear 22-45 0.2-0.65 0.2-0.7

In the case of John's billboard, it shows the information by the given value regardless of the change of environmental factors.

Therefore, there is a need for a new type of billboard that can maximize the effect of the advertisement by applying the color for each of the emotions according to the purpose and form of the advertisement to the existing billboard.

Republic of Korea Patent Publication 10-2007-0005133 (published January 10, 2007) Republic of Korea Patent Registration 10-0755680 (Registration Date August 30, 2007) Republic of Korea Patent Registration 10-0832285 (Registration date May 20, 2008)

In order to solve the above problems, the present invention is to change the color of the billboard by using the color conversion control logic according to external environmental factors such as temperature, humidity, solar radiation, wind speed, to the external environmental factors affecting the psychology of the person. The purpose of the present invention is to provide a color conversion billboard using a color control system according to outdoor environmental factor measurement values that can maximize the advertisement effect by inducing a suitable color change.

In order to achieve the above object,

The present invention uses the color control system by the outdoor environmental monitoring to automatically perform the color conversion of the billboard by controlling the color of the billboard through the control algorithm after measuring the environmental factors of the outdoor through a sensor The color conversion billboard is the main technical configuration.

The outdoor environmental factors are temperature, humidity, solar radiation, and wind speed, and after measuring the environmental factors, the temperature color values are corrected according to the measured environmental factor values.

The color conversion process of the billboard by the control algorithm comprises the steps of measuring the initial dry bulb temperature value (A) and the initial wet bulb temperature value (B), the initial solar radiation value (C), the initial wind speed value (E),

Calculating a D value according to Equation 1 below;

(Equation 1)

D = 40.6 + 0.72 × (dry bulb temperature + wet bulb temperature)

Determining an RGB color value according to the initial dry bulb temperature value (A),

A first color correction step of correcting the RGB color value determined according to the initial dry bulb temperature value A according to the calculated D value;

A second color correction step of correcting the RGB color value determined through the first color correction step according to the initial solar radiation value (C),

A third color correction step of correcting the RGB color value determined through the first color correction step according to the initial wind speed value C;

Driving the LED billboard by controlling the RGB LED driving PWM with the RGB color value determined through the third color correction step;

Measuring the dry bulb temperature value A 'every hour;

Maintaining the color when the difference between the initial dry bulb temperature value (A) and the dry bulb temperature value (A ') after 1 hour is less than 10 °, and correcting the color according to the temperature value when it exceeds 10 °;

If the difference between the initial dry bulb temperature value (A) and the dry bulb temperature value (A ') is less than 10 ° after measuring the wet bulb temperature value (B'), after the initial wet bulb temperature value (B) and 1 hour Maintaining the color when the difference between the wet bulb temperature value B 'is less than 5 °, and correcting the color according to the D value when the wet bulb temperature value is greater than 5 °;

If the difference between the initial wet bulb temperature value (B) and the wet bulb temperature value (B ') after 1 hour is less than 5 °, the solar radiation value (C') is measured, and then the initial solar radiation value (C) and the solar radiation value after 1 hour ( Maintaining the color when the difference of C ') is less than 200 cal, and correcting the color according to the solar radiation value when exceeding 200 cal;

If the difference between the initial solar radiation value (C) and the solar radiation value (C ') after 1 hour is less than 200 cal, after measuring the wind speed value (E'), the initial wind speed value (E) and the wind speed value (E ') after 1 hour If the difference is less than 0.5m / sec, the color is maintained, and if it exceeds 0.5m / sec, the color is corrected according to the wind speed value.

Then, every 1 hour, the color conversion process is repeated again from the step of measuring the dry bulb temperature value (A ').

And, the correction according to the D value is to perform a correction to increase the temperature by 5 degrees when the D value belongs to a value of 70 or more and less than 86,

Correction according to the solar radiation value is to perform a correction to increase the temperature by 5 degrees when the solar radiation value is more than 800cal or more than 1,400cal,

The correction according to the wind speed value is characterized in that the correction is performed to lower the temperature by 5 degrees when the wind speed value falls within a value of 0.5m / sec or more and less than 2.0m / sec.

As described above, the color conversion control logic according to the environmental factors according to the present invention and the outdoor billboard using the same by converting the color by using natural factors that change every moment as a factor of the effect of the advertisement of various colors and the human It has the effect of enhancing the advertising effect that appeals to emotion.

1 is a view showing a color control system according to the measurement of environmental factors in the outdoor according to the present invention.
2 is a diagram of a photochromic variable control circuit according to the present invention;
3 is a view showing the structure of a capacitive sensor which is a humidity sensor according to the present invention;
Figure 4 is a graph showing that the photocurrent is proportionally changed by the amount of sunlight of the solar radiation sensor according to the present invention.
5 is a color graphics showing the relationship between temperature and color according to the present invention.
6 is a flowchart illustrating a control algorithm according to the present invention.

The above technical configuration will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating the components of a color conversion billboard using a color control system according to an outdoor environmental factor measurement value according to the present invention, which is a billboard body, an RGB module, a multi sensor unit, and an A / D converter. It consists of a microcontroller.

The billboard main body has a rectangular or circular shape, and the list of contents to be advertised is color-transformed using a color control system according to an outdoor environmental factor measurement value.

The RGB module is located inside the main body of the billboard, and at least one of red, blue, green, and yellow LEDs is selected and converted according to the light color variable control signal of the main controller. A single red, red, ultra-red, blue, green, or yellow LED with a single wavelength selected along the internal center line. A color LED module is formed, and at least one of a red LED, an ultra-red LED, a blue LED, a green LED, and a yellow LED is formed on one side of a single color LED module. The full color LED module is selected to have a plurality of wavelengths.

The color conversion billboard according to the present invention is configured to detect the power output during the operation of the RGB module through the power sensing resistor, and transmit the load power according to the RGB module to the microcontroller.

That is, in the present invention, the power sensing resistor R2 is configured between the RGB module and the microcontroller of the color conversion billboard, and the reaction current flowing linearly according to the strength of the load power according to the operation of the RGB module is converted into a voltage through the power sensing resistor R2. Transmit it to one side of the microcontroller's input terminal.

At this time, the microcontroller calculates the strength of the load power according to the operation of the RGB module and the strength of the DC voltage output from the DC-DC converter, and outputs the insufficient voltage as a PWM output control signal to the DC-DC converter.

The multi-sensor unit is installed on one side of the billboard main body to measure the ambient temperature, humidity, solar radiation, wind speed, which is composed of a temperature sensor, humidity sensor, light sensor, wind speed sensor.

The sensor is a negative characteristic thermistor (NTC) having a negative temperature coefficient, the analog value measured by the sensor is converted into a digital value through the A / D converter, and enters the input of the P1 port of the microcontroller to measure the temperature value Done. The temperature value is repeatedly measured at regular intervals, and the measured temperature value causes the program to output a PWM signal that compensates the light output for temperature.

Since the operation and reliability of high-brightness LEDs are greatly affected by temperature, the circuit should be designed considering the temperature characteristics when designing the driving circuit. The temperature change not only changes the luminous flux by changing the voltage and current of the high brightness LED, but also changes the color by changing the intrinsic wavelength of the high brightness LED. In the color conversion process of the billboard using the LED, first, the temperature and color are first mapped through the color in relation to the temperature, and thus, the humidity and the amount of solar radiation are applied to the color conversion logic related to the first temperature. , The correction is made by the wind speed, and the correction is as shown in Tables 1 to 3 above.

Where the sensing formula, changed value = (NEW + OLD) / 2

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The filtering value is Flitering =

to be.

And, as a sensor for measuring the external environmental factors,

Temperature sensors are generally divided into contact and non-contact type. Types of temperature sensors include contact type thermal expansion sensors, metal resistance thermometers, thermistors, IC temperature sensors, quartz temperature sensors, and non-contact type pyroelectric temperature sensors and quantum temperature sensors. In the present invention, using an IC temperature sensor using the thermoelectric principle, the temperature range of the IC temperature sensor is -200 ~ 800 ℃.

The wind speed sensor is a device for measuring the speed of wind. It consists of a part that is heated while exposed to the wind, an ohmic-dependent electric resistor structure that is in contact with the surface to have intimate thermal contact with the part, and a measuring part connected to the electric resistor. do. The measurement principle of this wind speed sensor is to sum up the values of the resistance sensors according to the heating temperature when heating the parts to which the two resistance sensors are attached evenly by ohmic heat. It is to transfer heat energy so that the value becomes a predetermined value. When the specified point is reached, the difference between the measured resistance values of each sensor is calculated.

In addition, there are two methods of measuring humidity by using inherent physical properties of water molecules or water vapor, and by using water molecules adsorbed on a hygroscopic material to change physical properties of the moisture sensitive material. Dew point humidity sensor, wet and dry bulb humidity sensor, diffusion type humidity sensor, infrared humidity sensor, etc. belong to the former, hair hygrometer, thin film or thick film humidity sensor, color hygrometer, etc. belong to the latter. Polymeric humidity sensors can be divided into organic materials such as cellulose and polyimide, and electrolyte systems using hydrophilicity and swelling.

Organic materials-based humidity sensors can be classified into four types and have the characteristics of using ion conductivity, capacitance, dielectric constant, displacement and mass change by expansion.

In the present invention, a capacitive humidity sensor is used, and the capacitive humidity sensor has a structure in which a polymer film is formed between two electrodes. The two electrodes serve as an electrode for applying a direct current and the polymer film absorbs moisture. It uses the principle that the capacitance changes according to the water molecular weight adsorbed or desorbed on the polymer membrane material, and the measurement range is wide from 0 to 100% RH and has a linear output according to humidity. Vertical and horizontal types are used for the structure of the capacitive sensor, and the structure thereof is shown in FIG. 4.

In addition, the solar sensor uses a photosensor, and as shown in FIG. 4, the photocurrent is changed in proportion to the amount of sunlight, and the solar sensor senses the illuminance and the solar radiation simultaneously by one sensor value. do.

The formula for the solar radiation is as follows.

Insolation = photophotocurrent × converted calories

The A / D converter serves to convert analog data measured from the sensor unit into digital data.

The microcontroller receives the digital data converted from the A / D converter, corrects the RGB color value according to the measured value after the time set in the initial value, and controls the RGB LED driving PWM with the corrected RGB color value. It sends the driving signal to the RGB LED module.

It is connected to the optical sensor through sensing resistor R1 on one side of input terminal, temperature sensor on the other side of input terminal, DC-DC converter on one side of output terminal to output PWM output control signal, and power on one side of input terminal. The RGB LED module is connected to the output terminal through the sensing resistor R2, and the strength of the load power according to the operation of the RGB LED module is input, and the RGB color correction unit is connected to the other side of the output terminal to convert RGB color values to It is configured to sort and output according to the wind speed.

6 is a flowchart illustrating a control algorithm according to the present invention.

The control algorithm includes the steps of measuring an initial dry bulb temperature value (A) and an initial wet bulb temperature value (B), an initial solar radiation value (C), and an initial wind speed value (E),

The D value (discomfort index) according to Equation 1 below is calculated.

Equation 1 is calculated using the values measured using a dry bulb thermometer and a wet bulb thermometer.

D = 40.6 + 0.72 × (dry bulb temperature + wet bulb temperature)

Next, determining the RGB color value according to the initial dry bulb temperature value (A),

A first color correction step of correcting the RGB color value determined according to the initial dry bulb temperature value A according to the calculated D value is performed.

The correction according to the D value is shown in Table 2 below.

Correction by D value D value Temperature table correction 70 and over 75 In 5 degree increments 75 or more but less than 80 In 5 degree increments 80 or more but less than 83 In 5 degree increments More than 83 and less than 86 In 5 degree increments

Next, a second color correction step of correcting the RGB color value determined through the first color correction step according to the initial solar radiation value C is performed.

The correction according to the solar radiation value is shown in Table 3 below.

At insolation  Correction Insolation Measurement Sensor Temperature table correction 800cal or more and less than 1,000cal In 5 degree increments 1,000cal or more, less than 1,200cal In 5 degree increments 1,200 cal or more but less than 1,400 cal In 5 degree increments

Next, a third color correction step of correcting the RGB color value determined through the first color correction step according to the initial wind speed value C is performed.

The correction according to the wind speed value is shown in Table 4 below.

Correction by wind speed value Wind speed sensor Temperature table correction 0.5 m / sec or more Less than 1.0 m / sec Descend by 5 degrees 1.0 m / sec or more Less than 1.5 m / sec Descend by 5 degrees 1.5 m / sec or more Less than 2.0 m / sec Descend by 5 degrees

After driving the LED billboard by controlling the RGB LED driving PWM with a predetermined RGB color value through the third color correction step,

After 1 hour of measuring the initial environmental factor value, the dry bulb temperature value A 'is measured again to apply temperature color value correction according to the dry bulb temperature value.

That is, after 1 hour, the dry bulb temperature value (A ') is measured. When the difference between the initial dry bulb temperature value (A) and the dry bulb temperature value (A') after 1 hour is less than 10 °, the color is maintained and 10 ° is measured. If exceeded, the RGB color value is corrected according to the temperature value. The RGB color value may be variously corrected according to the temperature value, but as a specific example, as shown in FIG. 5, the color change according to the temperature correction is performed according to the color determined for each temperature region.

If the difference between the initial dry bulb temperature value A and the dry bulb temperature value A 'after 1 hour is less than 10 °, the wet bulb temperature value B' is measured while maintaining the color.

Then, it measures the difference between the initial wet bulb temperature value (B) and the wet bulb temperature value (B ') after 1 hour. The color is maintained when the temperature is less than 5 °, and when the temperature exceeds 5 °, the D is measured. The color is corrected according to the value. The correction according to the D value is performed under the same conditions as the D value correction of Table 2 described above.

When the difference between the initial wet bulb temperature value B and the wet bulb temperature value B 'after 1 hour is less than 5 °, the color is maintained and the solar value C' is measured.

When the difference between the initial solar radiation value C and the solar radiation value C 'after 1 hour is less than 200 cal, the color is maintained, and when it exceeds 200 cal, the color is corrected according to the solar radiation value. The correction according to the solar radiation value follows the correction according to the solar radiation value of Table 3 described above.

When the difference between the initial solar radiation value C and the solar radiation value C 'after 1 hour is less than 200 cal, the wind speed value E' is measured while maintaining the color.

If the difference between the initial wind speed value (E) and the wind speed value (E ') after 1 hour is less than 0.5 m / sec, the color is maintained. If the wind speed is greater than 0.5 m / sec, the color is corrected according to the wind speed value. In this case, the correction is based on the wind speed value correction in Table 4 above.

As shown in FIG. 2, the light color variable control circuit of the LED billboard is based on a pulse driving circuit, and generates a PWM control signal for varying light color using a microcontroller.

The control circuit consists of one microcontroller, one D flip-flop, and eight NPN transistors for switching. To remove the delay of PWM signal, connect the buffer IC to the output of D Flip-Flop.

The microcontroller has 8K byte ROM and 256 × 8bit RAM, so there is no need for external ROM or RAM, and it has many advantages in terms of function and space. It can also directly interface with a computer using a communication port. .

The buffer IC section is connected to the 8-bit input of the buffer IC and the output of the D flip-flop. Each pin of the buffer IC is connected to the base pin of the switching transistor. The Buffer IC is also connected to two of the P3 ports to operate the Buffer IC.

The color conversion billboard using the color control system by outdoor environmental monitoring according to the present invention has high industrial applicability by maximizing advertisement effect by automatically controlling various colors according to external environmental factors.

Claims (7)

After measuring the environmental factors of the outdoor through a sensor, the color conversion of the billboard is automatically configured by the color conversion of the billboard by controlling the color of the billboard through the control algorithm,
The color conversion billboard is a billboard body consisting of a square or circular shape, and is located inside the billboard body according to the light color variable control signal of the main controller Red, Blue, Green, Yellow LED Any one or more of the selected RGB color conversion module, a multi-sensor unit installed on one side of the billboard main body to measure the ambient temperature, humidity, solar radiation, wind speed, and analog data measured from the sensor unit as digital data After receiving the converted A / D converter and the digital data converted from the A / D converter, the RGB color value is corrected according to the measured value after the time set in the initial value has elapsed. In the microcontroller that sends a drive signal to the RGB LED module by controlling the drive PWM,
The control algorithm measures the initial dry bulb temperature value (A) and the initial wet bulb temperature value (B), the initial solar radiation value (C), and the initial wind speed value (E),
Calculating a D value according to Equation 1 below;
(Equation 1)
D = 40.6 + 0.72 × (dry bulb temperature + wet bulb temperature)
Determining an RGB color value according to the initial dry bulb temperature value (A),
A first color correction step of correcting the RGB color value determined according to the initial dry bulb temperature value A according to the calculated D value;
A second color correction step of correcting the RGB color value determined through the first color correction step according to the initial solar radiation value (C),
A third color correction step of correcting the RGB color value determined through the first color correction step according to the initial wind speed value C;
Driving the LED billboard by controlling the RGB LED driving PWM with the RGB color value determined through the third color correction step;
Measuring the dry bulb temperature value A 'every hour;
Maintaining the color when the difference between the initial dry bulb temperature value (A) and the dry bulb temperature value (A ') after 1 hour is less than 10 °, and correcting the color according to the temperature value when it exceeds 10 °;
If the difference between the initial dry bulb temperature value (A) and the dry bulb temperature value (A ') is less than 10 ° after measuring the wet bulb temperature value (B'), after the initial wet bulb temperature value (B) and 1 hour Maintaining the color when the difference between the wet bulb temperature value B 'is less than 5 °, and correcting the color according to the D value when the wet bulb temperature value is greater than 5 °;
If the difference between the initial wet bulb temperature value (B) and the wet bulb temperature value (B ') after 1 hour is less than 5 °, the solar radiation value (C') is measured, and then the initial solar radiation value (C) and the solar radiation value after 1 hour ( Maintaining the color when the difference of C ') is less than 200 cal, and correcting the color according to the solar radiation value when exceeding 200 cal;
If the difference between the initial solar radiation value (C) and the solar radiation value (C ') after 1 hour is less than 200 cal, after measuring the wind speed value (E'), the initial wind speed value (E) and the wind speed value (E ') after 1 hour If the difference is less than 0.5m / sec, the color is maintained, and if it exceeds 0.5m / sec color conversion billboard using a color control system, characterized in that the step of correcting the color according to the wind speed value.
delete delete delete The method according to claim 1,
The correction according to the D value is a color conversion billboard using a color control system, characterized in that for adjusting the temperature rises by 5 degrees if the D value falls within the value of 70 or more and 86.
The method according to claim 1,
Correction according to the solar radiation value is a color conversion billboard using a color control system characterized in that the correction is to increase the temperature by 5 degrees when the solar radiation value falls within a value of more than 800cal 1,400cal.
The method according to claim 1,
The correction according to the wind speed value is a color conversion billboard using a color control system, characterized in that the correction is to lower the temperature by 5 degrees when the wind speed value is more than 0.5m / sec less than 2.0m / sec.

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