KR200385296Y1 - Auto dimming control device according to sunrise sunset time and luminous intensity of circumstans - Google Patents

Abstract

The designed lighting control device is a device that can automatically control the lighting by using the ambient brightness and sunrise sunset time. The designed device receives the latitude and longitude data of the installed place using the GPS module and calculates the sunrise time and sunset time by using the sunrise sunset program of the microprocessor to turn on / off the lighting device. Can be determined automatically. When the GPS is disconnected, the initial latitude and longitude data is used, and the latitude and longitude data can be manually entered and set.

When the ambient light becomes dark even before sunset time by receiving the brightness data using the light sensor, it is possible to automatically control the lighting step by step. In addition, the operation state of the current device can be transmitted to the outside through the communication module, and the operation command can be transmitted to the microprocessor using the communication module from the outside.

In case of abnormal operation of lamp or ballast, it can automatically detect this and cut off the power. Lamp that doesn't need to connect ballast supplies power to lamp by using SMPS power using changeover switch. Dimming control is possible by adjusting the magnitude of the signal applied to the gate portion of the phase control switching element at the front of the lamp.

Description

Auto dimming control device according to sunrise sunset time and luminous intensity of circumstans}

Conventional lighting control devices are applied to billboards, lighting devices, etc., and operated in the following manner.

(1) It operates on or off at a fixed time by using a device such as a timer. When you want to change the blinking time, change the ON time of the timer device. Adjusted.

(2) When the ambient light is sensed by the light sensor and below a certain value, the lamp is turned on or off, and the fixed value of brightness is affected by seasons and the environment. There is a disadvantage in that the operation does not operate if the sensitivity is changed due to the failure of the optical sensor or aging of the optical sensor.

(3) There is a device that operates by calculating the sunset time and turning the lamp on at sunset time and turning the lamp off at sunrise time. There is a disadvantage that does not work when you try Therefore, there is a great need for a device capable of turning on or off the lamp or controlling dimming according to the brightness of the surroundings and the accurate sunrise sunset time.

That is, the automatic lighting control device devised by the necessity as described above is a device capable of controlling light including dimming control in consideration of both ambient brightness and sunrise sunset time.

The power of the billboard can be automatically turned on or off at sunrise time, or dimming can be controlled according to the brightness of the surroundings, and the power of the street lamp can be automatically turned on or off. We designed a device that can control dimming according to the brightness. Moreover, it is a device which can control the headlight illumination of an automobile ON and OFF, and can control dimming control according to the brightness of surroundings.

The designed automatic lighting control device is a device capable of controlling light including dimming control considering both ambient brightness and sunrise sunset time. In other words, the power of the billboard can be automatically turned on or off at sunrise sunset time, or the dimming control can be performed according to the brightness of the surroundings, and the power of the street lamp is automatically turned on or off. It is a device that can control dimming according to the surrounding brightness. Moreover, it is a device which can control the headlight illumination of an automobile ON and OFF, and can control dimming control according to the brightness of surroundings.

Details of the automatic lighting control device designed as follows are as follows.

1. The clock function of the GPS module can be used to correct the clock error of the timer. If the GPS module is not connected, the date and time are calculated using the timer itself.

2. The program stores the sunrise and sunset time using the GPS module's latitude and longitude data. If the GPS module is not connected, the program is stored at the beginning or the latitude and longitude data most recently input. Calculate your sunrise sunset time.

3. Compared to the calculated sunrise sunset time data and the ambient brightness data input to the microprocessor through the light sensor, the lamp can be turned on if the surrounding environment becomes dark even if the sunset time is not reached. By adjusting the pulse width of the pulse width control unit according to the degree to control the magnitude of the signal supplied to the gate portion of the phase control switching element to adjust the brightness of the lamp. If such a device is used for the headlight control of the car, it is very useful because it can automatically adjust the brightness of the headlights when driving the car, and if applied to a street lamp or a security light, it will be possible to control the lighting without human intervention.

4. If the light sensor is turned off by using the light sensor ON OFF switch, it is determined that the light sensor is not connected, and the light control is performed according to the sunrise sunset time calculated by the microprocessor. Can be.

5. Automatically cut off the input power by judging the abnormality of ballast and lamp by using voltage detecting unit and current sensor unit, or transmit data about abnormality to external device by using communication module unit. In addition, the external device can control the lighting by transmitting an operation command to the microprocessor using the communication module.

1 shows the overall block diagram of the proposed automatic lighting control device. The composition and function of each part in the block diagram is as follows.

1. GPS module 10-This module displays the latitude, longitude and current time of the GPS module installed location. The clock function of the device can be used to correct the clock error of the timer. If the GPS module is not connected, the timer itself can be used.

2. Optical sensor ON / OFF (20)-If this part of the switch is turned on (ON), the ambient light data is converted into a digital signal using the optical sensor 30 and input to the microprocessor to the sunrise sunset time and ambient Determine the brightness of the lamp to operate the lamp. If OFF, the microprocessor 80 calculates the sunrise sunset time using only the timer time and operates the lamp.

3. Timer 40-Determines the time with its own clock and is input to the microprocessor. If the GPS module is connected, the time data is upgraded once a day by the microprocessor from the GPS module.

4. Microprocessor 80-receives a latitude, longitude, time data from the GPS module, or stores a program for calculating the sunrise sunset time using the latitude and longitude data specified. Date and time data are displayed on the display unit 90. If the GPS module is not connected, the sunrise and sunset time is calculated using the stored latitude and longitude data. The calculated sunrise sunset time data and the ambient brightness data input to the microprocessor through the light sensor allow the lamp to be turned on if it is dark even if the sunset time is not reached.

5. Pulse width control unit 70-This part is for outputting the signal applied to the gate part of the switching element for phase control in the microprocessor, and the pulse width is divided into 4 bits or 8 bits and outputted step by step from the minimum value to the maximum value. This part controls ON time of the phase control switching element. That is, the data input from the optical sensor is converted into a digital signal and input to the microprocessor, and the size of the signal supplied to the gate portion of the phase control switching element is controlled by adjusting the pulse width of the pulse width control unit according to the brightness of the surroundings. To adjust the brightness of the lamp.

6. SMPS unit 100-This part converts battery or AC power to desired DC power. When AC power is applied to the ballast or lamp, SMPS is bypassed to supply AC.

7. Voltage sensing unit 1 (110), voltage sensing unit 2 (140)-This part detects the input voltage and output voltage of the ballast to determine the normal operation of the ballast. When the rated voltage is sensed by the voltage sensing unit and the current is not sensed by the current sensor unit, it is determined that the lamp has reached the end of its life. Protect it.

8. Ballast 130-If the output lamp is the same as the discharge lamp, a ballast is required.

9. Switching switch 120-This is a part for switching the connection according to the case where the ballast is necessary and not required, and determines whether there is an abnormality of the lamp or the ballast according to the voltage values of the voltage sensing units 110 and 140, If the ballast continues to operate in the event of a fault, the life of the ballast is also shortened rapidly, so that the power supply is cut off and controlled to protect the ballast or lamp.

10. Current sensor unit 150-This part measures the value of the current supplied to the lamp. Through this, the operating state of the lamp can be detected.

11. Control button unit 60-It is a button unit for manual or forced test of the manual setting of the time or the operating state of the lamp.

12. The display unit 90-This part displays the current date, time, and the like.

13. Communication module unit 50-Transmitting the operation status of the current lamp and ballast to an external device or a computer, and external commands are sent to the microprocessor so that the external device can forcibly control the operation of the lamp. This is the part to convey. The communication module includes a communication device capable of one-to-one or one-to-many communication such as a CDMA modem, a power line modem, or a wired modem.

2 is an algorithm for calculating sunrise sunset time using latitude longitude data. The algorithm works in the following order:

1. Read the latitude and longitude data.

2. Substitute latitude and longitude data into the following equation.

3. Calculate the sunrise sunset time in standard time.

Sunrise time = 720 + 4 * (longitude-time angle)-ecliptic tilt angle

Noon time = 720 + 4 * Longitude-ecliptic tilt angle

Sunset time = 2 * (noon time-sunrise time) + sunrise time

4. Convert sunrise time to Korea standard.

For example, if the location is based on Seoul (latitude -37.20'24 "longitude -127.24'36") and calculated the sunrise sunset time of January 31, 2004 in the above calculation, You can get it.

Sunrise 7:37:30, sunset 17:55:13

5. Determine whether the lamp is on or off at the specified sunrise sunset time.

1. Receive the latitude and longitude data of the location where the lighting control device is installed by using GPS module and calculate sunrise time and sunset time by using sunrise sunset program stored in the memory of microprocessor. ON / OFF) time can be determined automatically. When the GPS is disconnected, the initial latitude and longitude data is used, and the latitude and longitude data can be manually entered and set.

2. If the ambient light becomes dark even before sunset time by receiving the brightness data of the surroundings by using the light sensor, it is possible to automatically control the lighting step by step.

3. The operation status of the current device can be transmitted to the outside through the communication module, and the operation command can be sent to the microprocessor from the outside.

4. In case of abnormal operation of lamp or ballast, it can automatically detect this and cut off the power. Lamp that does not need to connect ballast supplies power to lamp by using SMPS power using changeover switch. Dimming control is possible by adjusting the magnitude of the signal applied to the gate portion of the phase control switching element at the front of the lamp.

1 is a block diagram of an automatic lighting control device.

Claims (4)

GPS unit that provides data about the latitude and longitude of the current location and time, optical sensor unit providing data on ambient brightness, optical sensor ON / OFF unit to determine the presence or absence of optical sensor, time transmitted from GPS module Timer unit that readjusts the time by using the data at regular intervals, Voltage sensing unit for detecting the magnitude of the voltage, Current sensor unit for detecting the magnitude of the current, Microprocessor unit for receiving each of these data and processing commands, Microprocessor Communication module unit for transmitting stored data to outside or transmitting external command to microprocessor, Display unit showing current status of device, Switching unit for controlling ballast connection, Converting input power to DC power of desired type Automatic lighting control device composed of SMPS. The method of claim 1, The automatic lighting control device is a control device for determining the brightness of the lamp by calculating the sunrise sunset time of a specific region using latitude and longitude data input from the GPS unit or its own device, The method of claim 1, The automatic lighting control device calculates the sunrise sunset time using the latitude, longitude, and time data in the GPS unit, and determines the on / off time of the lamp output unit based on this, and uses the light sensor on / off selection unit When is on, the ambient brightness data from the light sensor is converted to a digital signal and passed to the microprocessor, which uses the data to place the light at the front of the lamp if it is dark even though the current time has not reached sunset time. Lighting control device capable of dimming control according to the ambient brightness by adjusting the magnitude of the pulse signal applied to the gate of the phase control switching element, The method of claim 1, The automatic lighting control device monitors the state of the ballast or lamp connected to the output terminal by using a voltage sensing unit or a current sensor unit, and cuts off the power by using a changeover switch in the case of a ballast or lamp failure. Directly connect the power from SMPS to the lamp without going through the ballast by using the switch, and transmit data about failure status to the external device by using communication module in case of lamp or ballast failure or abnormal operation, or control external lighting Lighting control device for transmitting commands to a microprocessor using a communication module from a remote location,