KR100609481B1 - a street lamp control system - Google Patents

Abstract

The present invention relates to a street light control device using natural energy, a solar cell for directly converting and supplying solar energy to electrical energy, and a DC power conversion device for charging the battery with power generated by driving a wind power generator with wind. A DC converter, a converter for boosting and converting the DC power discharged from the power storage unit into an AC power source, a detection sensor unit for detecting voltage and current, a status display unit for displaying the system status with LCD and LEDs; The control unit is configured to generate a PWM signal in the DC-DC converter according to the detection sensor unit and the detection signal of the input and output, and to generate a control signal to the converter of the DC / AC, respectively, to turn off and off the lamp, (1) is provided with a lighting control unit (1a) for controlling a street lamp, the lighting control unit (1a) is set to a plurality of lighting mode (Sn) divided into a multi-step from after sunset to before sunrise It is configured to automatically turn on and off the street lamp by the selected lighting mode.

Solar cells, wind power generators, lamps, accumulators, batteries,

Description

Street lamp control system using natural energy {a street lamp control system}

1 is an exemplary view showing a schematic configuration of a conventional solar street light controller;

Figure 2 is an exemplary view showing a schematic configuration of a charge and automatic flashing controller using a conventional solar cell,

3 is a block diagram showing the configuration of a streetlight control apparatus using natural energy to which the present invention is applied;

4 is a reference diagram showing the configuration of the lighting control unit in the streetlight control apparatus using the natural energy of the present invention,

5 and 6 is a flow chart for controlling the street light control device using the natural energy of the present invention,

<Explanation of symbols for the main parts of the drawings>

 2: solar cell 3: battery

 5: DC-DC converter 6: lamp driver

 7: Sensor section 8: Display section

 9: power supply unit 11: solar cell

12: equality control unit 13: floating control unit

14: constant voltage unit 15: voltage comparison unit

16: reference voltage generator 17: battery voltage detector

18: equal driving part 19: solar cell voltage comparison

20: signal comparator 21: low voltage detector

22: load control unit 23: storage battery

The present invention relates to a streetlight control device using natural energy, and more particularly, to measure the electricity generated by using solar and wind power, and to efficiently charge the battery, as well as the point and the lighting of the streetlight regardless of the change of season, sunrise / sunset time. It is improved so that it can be controlled automatically.

Conventional utility model No. 286046 has also been proposed a street light control device using the solar light in the manner of lighting the street light by using the power charged from the solar cell as the power supply source.

The conventional street light control device using the solar light is a solar cell (2) for converting the solar energy into electrical energy and output the converted power as shown in FIG. A DC-DC converter 5 for charging the battery 3 with the power generated by the solar cell 2; A lamp driver 6 for controlling lighting and brightness by converting DC power discharged from the battery 3 into boosted and high frequency AC power; A detection sensor unit 7 including a detection unit and a low pass (LP) filter and detecting a voltage of the solar cell 2, a voltage of the battery 3, and a current of the battery 3; A display unit 8 which displays contents input to the input device through an output device such as an LCD and an LED; A power supply unit 9 for converting a battery voltage into a power supply of + 5V and + 15V; According to the detection signals of the sensor 7 and the display unit 8, a pulse width modulation (PWM) signal is supplied to the DC-DC converter 5, and a 3-bit control signal is supplied to the lamp driver 6. Control unit 1 for outputting various system states on the display unit 8 while controlling the point, the extinguishing and the brightness of the lamps by generating the respective lights, and is configured to supply or control the power required for the street light.

As another embodiment, as shown in FIG. 2, Patent No. 254784 describes a battery voltage detector 17 for detecting a voltage remaining in the battery 23, and reference voltages of the battery voltage and the reference voltage generator 16. Comparing the voltage comparing unit 15, the floating control unit 13 for transmitting or cutting off the power provided from the solar cell 11, and the constant voltage for controlling the operation of the floating control unit 13 by comparing the battery voltage and the reference voltage An equality control unit for controlling the operation of the unit 14 and the floating control unit 13 for supplying the power of the solar cell 11 or for transmitting the electric power of the solar cell 11 to the storage battery 23 to allow equal charging. 12) the equal driving unit 18 which controls the equalization control unit 12 by performing on or off operation according to the comparison output of the voltage comparing unit 15 and the voltage of the solar cell 11 as a reference. Solar cell voltage comparison unit 19 to compare the voltage, and the storage battery voltage and the reference voltage The low voltage detector 21 for detecting the low voltage state of the battery 23, the signal comparator 20 for comparing the output signals of the solar cell voltage comparator 19 and the low voltage detector 21, and the signal comparator 20. Charge and automatic flashing controller using a solar cell with a load control unit 22 for controlling the street light to turn on or off according to the output of the has been proposed.

However, in the case of the former, the solar street light is used for 3 or 4 days of the design of the solar street lamps, and in the case of a continuous shortage of solar radiation, the depth of the battery is deepened and the battery terminal voltage is reduced. In addition, when the battery is charged with power generated from the solar cell, when the battery charge is used for a long time by floating charging, electrolyte stratification occurs inside the battery, which greatly reduces the battery life.

As in the latter case, in order to prevent the depth of discharge of the battery from deepening, it detects the low voltage of the battery and temporarily stops the lighting of the lamp to protect the battery and to restore the lighting function when the battery charge is good. However, this control method has a problem in that the lamp does not operate when the battery is over-discharged and thus loses the function of the street lamp.

Therefore, the present invention is to install the wind power generator using the power of the wind in addition to the solar cell using the solar power to solve the problems caused by the number of reliefs so that the power supply to the street lamp can be made continuously regardless of the number of reliefs. It is aimed.

In addition, the present invention controls the state of charge of the battery by detecting the voltage and current generated in the solar cell and wind power generator, while measuring the charging current of the battery to improve the performance of the solar cell control and battery charge control system system efficiency The purpose is to increase.

In addition, the present invention enables the lighting control unit for controlling the street lamp to be able to control the street lamp according to the sunrise / sunset time by the built-in intelligent processor to accurately turn on and off the street lamp regardless of seasonal changes, and to adjust the brightness of the street lamp, etc. Another aim is to significantly reduce battery discharge depth to 15% or less, contributing to battery life.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a block diagram showing the configuration of a street light control device using the natural energy to which the present invention is applied, Figure 4 is a reference diagram showing the configuration of the lighting control unit in the street light control device using the natural energy of the present invention, Figure 5 and Figure 6 shows a flow chart for controlling the street light control device using the natural energy of the present invention.

A power generation unit for generating electricity as shown in the accompanying drawings, and a DC-DC conversion unit 5 for charging the battery 3 with power generated by the power generation unit; A lamp driver 6 for controlling lighting and brightness by converting DC power discharged from the battery 3 into boosted and high frequency AC power; A detection sensor unit 7 including a detection unit and a low pass filter (LP) to detect the voltage of the power generation unit and the voltage and current of the battery 3; A display unit 8 for displaying the input contents of the input device through an output device such as an LCD and an LED; A power supply unit 9 for converting a battery voltage into a power supply of + 5V and + 15V; According to the detection signals of the sensor 7 and the display unit 8, a pulse width modulation (PWM) signal is supplied to the DC-DC converter 5, and a 3-bit control signal is supplied to the lamp driver 6. The control unit 1 is provided in the same manner as in the prior art to control the point, the extinguishing and the brightness of the lamp by generating the respective light outputs, and to output various system states to the display unit 8.

However, in the present invention, in addition to the solar cell (2) for generating electrical energy using solar light, the wind turbine (2a) for generating electrical energy using wind is installed in parallel to each of these solar cells (2). And by the wind turbine (2a) is characterized in that it is configured to generate power.

In addition, the present invention is provided with a separate lighting control unit (1a) for controlling a street lamp in the control unit 1, the lighting control unit (1a) is divided into various lighting modes divided into 10 stages from after sunset to before sunrise In accordance with one of the lighting mode selected by the lighting control unit is characterized in that it is configured to automatically perform the dot, the off of the street light.

In the lighting mode Sn of the lighting control unit 1a, the first lighting mode S ₁ is maintained to be turned off (“OFF”) after sunset until before sunrise so that the lights are turned off and turned off automatically after the sunset becomes dark. ) And the tenth lighting mode (S ₁₀ ) which is turned on (“ON”) from sunset to before sunrise, and then switched to the OFF (“OFF”) state, and the first lighting mode (S ₁ ) and the tenth lighting mode ( S ₁₀ ) is divided into a plurality of stages, characterized in that the second lighting mode (S ₂ ) to the ninth lighting mode (S ₉ ) is provided to turn on and off the lamp lamp for a predetermined time.

The lighting control unit 1a of the present invention for controlling street lamps is set as follows.

First, the first lighting mode (S ₁ ) for maintaining the street light off (“OFF”) from sunset to before sunrise. A second lighting mode (S ₂ ) in which the street lamp is turned on (“OFF”) after being turned on (“ON”) for three hours (hr) after sunset; After turning on the lamp for 5 hours (hr) after sunset (third light mode (S ₃ ) to be turned off ("OFF") state. Fourth light mode (S ₄ ) to turn on (“OFF”) after turning on the lamp for 7 hours (hr) after sunset (S ₄ ); A fifth lighting mode S _{5 in} which the street lamp is turned on (“OFF”) after being turned on (“ON”) for 10 hours after sunset (S ₅ ); A sixth lighting mode S _{6 in} which the street lights are turned on (“ON”) for three hours after sunset (hr) and one hour (hr) before sunrise, respectively, and then turned off (“OFF”); 7th lighting mode (S ₇ ) which turns on (“ON”) for 3 hours after sunset (hr) and 3 hours (hr) after sunset, and then turns off (“OFF”); After 8 hours (hr), 2 hours (hr) before sunrise ( ₈ ) lights up (“ON”) and turns off (“OFF”) 8th lighting mode (S ₈ ); 6 hours after sunset (hr), the ninth lighting mode (S ₉ ) which turns on (“ON”) and turns off (“OFF”) for 2 hours before sunrise (“ON”); lights up after sunset (“ON”) And set to the tenth lighting mode (S ₁₀ ), which is switched to the light-off (“OFF”) state before sunrise.

In the above configuration, the control unit 1 includes a microprocessor to collectively control each part of the device and to perform an algorithm required for the control.

The DC-DC converter 5 is composed of a power converter for charging the power of the solar cell 2 and the wind generator 2a to the battery 3 to the maximum of the solar cell 2 and the wind generator 2a. An algorithm for performing output point tracking control and battery constant voltage charge control is performed.

In addition, the lamp driver 6 converts the DC power discharged from the battery 3 into AC power of boosted and commercial frequency to light the lamp 4 and at the same time adjusts the brightness in the lit state.

The detection sensor unit 7 is composed of a detection unit and the LP filter to detect the voltage value of the solar cell 2, the voltage of the wind turbine 2a, the voltage value of the battery and the battery current value to transmit to the control unit 1 It is.

In addition, the display unit 8 is to inform the state of the operation according to the operation in the above-mentioned control unit 1 through the LCD and LED, letters or numbers and whether the lighting.

The control unit 1 performs a control algorithm according to the state and options of the device detected by the detection sensor unit 7 and each device device to generate a PWM signal to the DC-DC converter 5 to the battery 3. Adjust the charging power.

The controller 1 generates a 3-bit control signal to the lamp driver 6 to adjust the state of the power discharged from the battery 3, thereby controlling the lighting, turning off and brightness of the lamp 4 and the battery 3. Prevent overdischarge or overcharging.

In addition, the control unit 1 outputs respective control signals during input and output, and informs the operation state of the device by letters or numbers through the LCD of the display unit 8, and also externally indicates whether the device is illuminated by LEDs. To tell. That is, according to the input and output signal input, the solar cell voltage, solar cell current, battery voltage current, abnormal state detection of the lamp, battery charge capacity and discharge capacity, etc. are displayed.

When the lamp 4 is turned on, if the lamp 4 is burned out or the life is over, no current is transmitted to the lamp 4 even when the lamp driver 6 is operated. Therefore, if the current is not detected even when driving the lamp driving unit 6, it is determined that the lamp is burned out and the control unit 1 outputs a control signal to stop the output of the lamp driving unit 6 to stop the driving of the lamp 4. .

The battery 3 is configured as a maintenance-free sealed battery so that the voltage can be estimated according to the amount of charge, that is, the residual capacity of the battery 3 by measuring the open circuit voltage.

In addition, when the controller 1 recognizes that the sunset state is compared with the sunset setting voltage due to the decrease of the solar cell voltage, the intelligent processor of the controller records and stores the sunset time data, and the voltage of the solar cell 2 decreases to increase the charging current. Is not generated, and the voltage of the battery 3 is stabilized accordingly.

On the other hand, when the sunset is complete, the sunset setting voltage set in the detection sensor unit 7 is sensed, and the controller 1 outputs a control signal to the lamp driver 6 to light the lamp 4. The discharge power output to the lamp 4 through the lamp driver 6 is adjusted based on the charging voltage of the battery 3 measured by the sensor 2.

When the voltage of the solar cell reaches the sunrise setting voltage set by the detection sensor unit 7 at dawn and sunrise, the control unit 1 compares the conditions of the lighting control unit 1a and sends a light-off signal to the lamp driver 6 to turn off the lamp. Let

The lighting mode of the street lamp is in the first lighting mode that keeps all lights off (“OFF”) after sunset or before sunrise, or goes off after the sunset lights up (“OFF”) after sunset. Between the switched tenth lighting mode and these lighting modes, there are provided second to ninth lighting modes which are set in several stages to selectively turn on and off the street lamps for a predetermined time. All 10 steps are used to selectively use any one of them.

<Example>

Setting mode of the lighting control unit 1a for controlling a street lamp;

First, the first lighting mode (S ₁ ) to keep the street lights off (“OFF”) from sunset to before sunrise; lights up (“OFF”) after 3 hours (hr) after sunset Second lighting mode (S ₂ ) to be switched to the state of ”); third lighting mode (S) to be turned off (“ OFF ”) after turning on the lamp for 5 hours (hr) after sunset. ₃ ) ;, the fourth lighting mode (S ₄ ) to turn on (“ON”) for 7 hours after sunset (”) and turn off (“ OFF ”); 10 hours after sunset 5th lighting mode (S ₅ ) which turns on (“ON”) and then turns off (“OFF”); lights up the street lamp for 3 hours after sunset (hr) and 1 hour before sunrise (hr) ( ₆ ) the 6th lighting mode (S6) which switches to the "OFF" state after turning on ("ON"), and turns on the lamp for 3 hours after sunset (hr) and 3 hours before sunrise (hr) ₇ ) lighting mode (S ₇ ) to be turned off (“OFF”) after turning on the lamp, Eighth lighting mode (S ₈ ) which is turned on (“ON”) for 4 hours (hr) and 2 hours (hr) before sunrise, and then turned off (“OFF”); 6 hours after sunset hr), the ninth lighting mode (S ₉ ) which turns on (“ON”) for 2 hours (hr) before sunrise, and then turns off (“OFF”); lights up the street lamp after sunset (“ON”) And set to the tenth lighting mode (S ₁₀ ), which is switched to a light-off (“OFF”) state before sunrise.

As described above, the lighting mode set in various ways is any one of the selected lighting modes, that is, when the lighting mode setting is set to "3 / off / 1" as the sixth lighting mode, the street lamp is turned on for 3 hours after sunset (“ON After turning off the lamp, the lamp is temporarily turned off and the lamp is turned on 1 hour before sunrise, and the lamp is turned off at the same time as the sunrise.

Meanwhile, the sunrise and sunset times for controlling the street light are changed daily based on the data input in advance in the voltage measurement of the detection sensor unit 7 and the time measurement data linked to the microcontroller of the controller 1 for turning on and off the lamp. You can turn on and off the lamp automatically at the time of sunrise and sunset.

In order to change the setting mode, the user adjusts the lighting control setting switch to achieve the desired lighting time and lighting mode, and sets the modified data in association with the microcontroller of the controller 1 in which the previous data is input. If the data is corrected and input, the new lighting mode will be set accordingly.

The lighting mode of the lighting control unit as in the present invention is not only set to all of the divided into 10 steps as in the above-described embodiment, among those skilled in the art more than 10 steps or even less than 10 steps less than the light mode changes Is possible

As described above, according to the solar lighting lamp control apparatus according to the present invention, the amount of solar power and wind power charged in the battery is measured, respectively, so that the battery can be efficiently charged and the lamp can be turned on and off. The built-in processor enables precise control of street lights and lights out regardless of the season.

In addition, the electricity generated from the power generation unit can be measured and charged to measure the lamp side current to determine whether the lamp is burned out, and when the lamp is burned out, the lamp is stopped and an alarm is generated, thereby making maintenance more rapid. .

In addition, the present invention can detect the battery remaining capacity to prevent over discharge and overcharge of the battery to extend the life of the battery as well as to reduce the battery discharge depth to 15% or less by controlling the brightness of the lamp contributes to the improvement of battery life It is a very useful invention having the effect of such as.

Claims (2)

delete A power generation unit for generating electricity; A DC-DC converter 5 for charging the battery 3 with the power generated by the power generator; A lamp driver 6 for controlling lighting and brightness by converting DC power discharged from the battery 3 into boosted and high frequency AC power; A detection sensor unit 7 including a detection unit and an LP filter to detect the voltage of the power generation unit and the voltage and current of the battery 3; A display unit 8 which displays contents input to the input apparatus through the output apparatus; A power supply unit 9 for converting a battery voltage; According to the detection signals of the sensor 7 and the display unit 8, the DC-DC converter 5 generates a PWM signal to the lamp driver 6, respectively, and generates a control signal, and displays various system states on the display unit 8. It is composed of a control unit (1) for outputting, wherein the power generation unit is composed of a structure in which the solar cell (2) using the solar light and the wind power generator (2a) using the wind is installed, the control unit (1) controls a street lamp The lighting control unit 1a is provided such that the lighting control unit 1a is set in various lighting modes Sn after sunset to before sunrise so that the street lights are sequentially turned on and off by any one of the lighting modes selected from them. In the streetlight control device using the natural energy is configured, The lighting mode Sn of the lighting control unit 1a is A first lighting mode S ₁ for keeping the street light off (“OFF”) after sunset to before sunrise; A second lighting mode S _{2 in} which the street lamp is turned on (“OFF”) after turning on (“ON”) for 3 hours after sunset (S ₂ ); A third lighting mode S _{3 in} which the street lamp is turned on (“OFF”) for 5 hours after sunset (“ON”) and then turned off (“OFF”); A fourth lighting mode S _{4 in} which the street lamp is turned on (“OFF”) after being turned on (“ON”) for 7 hours after sunset (S ₄ ); A fifth lighting mode S _{5 in} which the street light is turned on (“ON”) for 10 hours after sunset (“ON”) and then switched to the OFF (“OFF”) state; A sixth lighting mode S _{6 in} which the street lamps are turned on (“ON”) for 3 hours after sunset (hr) and 1 hour (hr) before sunrise, and then turned off (“OFF”); A seventh lighting mode S _{7 in} which the street lamps are turned on (“ON”) for 3 hours after sunset (hr) and 3 hours (hr) before sunrise, respectively, and then turned off (“OFF”); An eighth lighting mode S _{8 in} which the street lights are turned on (“ON”) for 4 hours after sunset (hr) and 2 hours (hr) before sunrise, respectively, and then turned off (“OFF”); A ninth lighting mode S _{9 in} which the street lights are turned on (“ON”) for 6 hours after sunset (hr) and 2 hours (hr) before sunrise, respectively, and then turned off (“OFF”); Street light control device using a natural energy, characterized in that it consists of a tenth lighting mode (S ₁₀ ) to turn on (“ON”) after the sunset after the sunset (“OFF”).

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