KR20210051132A - External illuminance detection and life equalization lamp - Google Patents

Abstract

The present invention provides an external illuminance detection and life equalization lighting device, which includes: a lamp module in which a plurality of individual lamps are arranged in parallel; a power supply unit for supplying power to the lamp module; an illuminance sensor for detecting the amount of external light; an operation control unit which selectively controls power supply to lamps of the lamp module according to the external light detected by the illuminance sensor and controls the operation sequence of individual lamps; a non-volatile memory for storing the operating time of the individual lamps of the lamp module; and an operation button for starting or stopping the operation of the lamp module.

Description

External illuminance detection and life equalization lamp}

The present invention relates to a lighting that changes the amount of light according to the external illuminance, and in detail, a new lighting device that equalizes the overall lamp life by not only controlling the number of lamps operated in connection with the external illuminance, but also calculating the lifetime according to the lamp operation. Suggest.

In general, lighting equipment may have a fixed brightness or adjust the brightness by controlling the number of lamps operated in stages, and the brightness of the lighting equipment is automatically adjusted according to the external brightness (natural light or brightness by a separate lighting equipment). It is rarely controlled. For example, when there is a lot of light entering an indoor space through a window, the indoor lighting does not need to be bright, whereas when there is little light incident through the window, the illumination needs to be brighter. In this way, if the brightness of the indoor lighting device is linked according to the external incident light, the indoor lighting can be efficiently controlled and the power consumption of the lighting device can be reduced.

However, in most cases, commercially available lighting devices provide only one brightness through ON/OFF control, and some known techniques have proposed a method of controlling the operation of the lighting device according to the external brightness detected by the illuminance sensor. There is a disadvantage in that the lamp life of the entire lighting device is uneven when only some of the plurality of lamps are turned on in the device.

According to Patent Application No. 10-2010-0060481, an illuminance sensor that detects the illuminance of the surrounding environment where the LED fluorescent lamp is installed, a human body sensor that detects the presence of a person in the surrounding environment where the LED fluorescent lamp is installed, the An external environment including an eco-sensor including an acoustic sensor that senses a specific sound in the surrounding environment in which the LED fluorescent lamp is installed, a power-saving display unit that displays the power saving state of the LED fluorescent lamp, and a communication unit that communicates with the outside. According to this, power consumption is reduced by adjusting the illumination of LED fluorescent lamps.

In addition, according to Patent Application No. 10-2014-0041731, using information including the amount of light of the LED lighting, the constant voltage of the power supply supplied to the LED lighting, a constant current, or a combination thereof, the brightness of the LED lighting is changed with respect to the change in the illuminance value. It is controlled to change linearly, and the reference illuminance setting of the LED lighting can be variably controlled, and at least one illumination sensor is installed to detect light in each single direction, and the corresponding LED lighting is dimmed in each direction. By selectively performing control, confusion in illuminance detection due to the illuminance difference in each direction is prevented.

These conventional technologies have similar functions in that they reduce the power consumption of the lighting device by controlling the operation of the lighting device in conjunction with external brightness. However, when there are multiple lamps in the lighting device, the life of a specific lamp is excessive. As it is reduced, the overall lamp life becomes uneven.

When a lamp is selectively operated according to external illuminance in a state including a plurality of lamps, if only some lamps have reached the end of their service life, the inconvenience of replacing the corresponding lamp may occur, or the inconvenience of replacing the entire lighting device may occur. Accordingly, in a lighting device that controls operation in conjunction with external illumination, it is necessary to equalize the life of the lamps as a whole by controlling the operation order of the individual lamps according to the life of the individual lamps.

The present invention was invented under the above-described technical background, and an object of the present invention is to provide a lighting device that flexibly automatically controls the brightness of indoor lighting by detecting the illuminance of light transmitted from the outside.

Another object of the present invention is to keep the brightness of an indoor space constant by harmonizing the light transmitted from the outside and the light of the indoor lighting, and to reduce unnecessary power consumption.

Another object of the present invention is to increase the durability of the lighting device and extend the overall lifespan by leveling the consumption unequal consumption of individual lamps in the lighting device while minimizing the power consumption of the lighting device.

In addition, other objects and technical features of the present invention will be presented in more detail in the detailed description below.

In order to achieve the above object, the present invention provides a lamp module in which a plurality of individual lamps are arranged in parallel, a power supply unit for supplying power to the lamp module, an illuminance sensor detecting the amount of external light, and external light detected by the illuminance sensor. According to an operation control unit that selectively controls power supply to the lamps of the lamp module and controls the operation sequence of individual lamps, a nonvolatile memory that stores the operation time of each lamp of the lamp module, and starts the operation of the lamp module, or It provides an external illuminance sensing and life-leveling lighting device including an operation button to stop it.

In the lighting apparatus of the present invention, the operation control unit checks the operation time of individual lamps of the lamp module, determines the number of lamps to be operated according to the amount of external light transmitted by the illuminance sensor, and operates according to the determined number. It is characterized in that the lamps are operated in the order of less time.

In addition, in the lighting apparatus of the present invention, as the operation button is pressed, the operation control unit may turn on individual lamps step by step in the order of lamps having a small operation time.

Meanwhile, the external illuminance sensing and life-leveling lighting device according to the present invention may further include a switching unit that is intermittently controlled by intermittently controlling a voltage applied to the lamp by being placed between the operation control unit and the lamp, and the maximum value of the operation time of the plurality of lamps And, when the difference between the minimum value is equalized within 5 to 10%, the lamp operation time data may be initialized by recognizing the entire lamp life as an equalized value.

According to the present invention, it is possible to reduce eye fatigue and maintain the brightness of the indoor space in a natural state by maintaining a constant illumination brightness of an internal space in harmony with the external brightness.

In addition, according to the present invention, unnecessary power consumption can be reduced by adjusting the number of individual lamps output from the indoor lighting device, and the lifetime of the lighting device can be increased by equalizing the lifetime consumption of individual lamps in the lamp module.

The technical features applied to the lighting device of the present invention can be effectively applied to other systems that need to be controlled to operate only a part of the whole.

1 is a configuration diagram of a lighting device of the present invention
Figure 2 is a flow chart of the operation of the lighting device according to the present invention
3 is a flow chart of initializing life data of the lighting device of the present invention
4 is a schematic diagram of a circuit of a lighting device according to an embodiment of the present invention
5A and 5B are photographs showing lamps operated according to the degree of life span
6A to 6C are photographs showing the lighting degree of the lighting device according to the amount of external light

The present invention relates to a lighting device, which detects external illuminance and flexibly automatically controls the light intensity to maintain a constant brightness of the space, while reducing unnecessary power consumption and leveling the inequality in life consumption of individual lamps generated in this process. Let it.

1 is a configuration diagram of a lighting device 100 of the present invention. The lighting device includes a lamp module 110 in which a plurality of individual lamps 112 are connected in parallel and arranged. In the lamp module, an LED bar in which LED lamps are included in a row may be used as a unit lamp or an individual lamp, and a plurality of such LED bars may be arranged. Among the lamp modules, a specific lamp (LED bar) can be selectively operated, and the number of individual lamps can be selected by varying the number of individual lamps operated according to the brightness of ambient light, that is, the brightness of external sunlight or other surrounding lights.

In the lighting device, a power supply unit 120 that supplies power to the lamp module, an illuminance sensor 130 that detects the amount of external light, and an illuminance sensor selectively supply power to the lamp of the lamp module according to the external light detected by the illuminance sensor. And an operation control unit 140 that controls and controls the operation order of individual lamps. The operation control unit may include an algorithm for selecting a lamp to be operated preferentially based on life data of an individual lamp and an algorithm for determining the number of lamps to be operated according to the amount of external light.

According to the operation of the lighting equipment, information on the operation time of the individual lamps of the lamp module is stored. To this end, the lighting device of the present invention includes a memory 150 and includes a nonvolatile memory, so that even when the power of the lighting device is cut off, operation time information of the lamps can be checked later. In addition, the lighting device of the present invention includes an operation button 160 for starting or stopping the operation of the lamp module. Meanwhile, in the present invention, a switching unit may be further included between the operation control unit and the lamp to intermittently control a voltage applied to the lamp, which will be described later.

2 is a flow chart showing the basic operation of the lighting device according to the present invention. The operation control unit checks the operation time of the individual lamps (LEDs) of the lamp module, and to this end, first checks data related to the operation time of the lamps stored in the above-described memory. If time data exists, the order of operation of the lamps according to the usage time is determined and arranged based on this data. If time data does not exist, the order of operation of the lamps is determined by the order determined by the default value, for example, the operation proceeds sequentially from lamp 1. In addition, if there are lamps having the same operating time or use time, the priority can be arbitrarily determined.

When the time data and operation sequence of the lamps are determined, the controller receives an external illuminance value from the sensor and the controller calculates the number of lamps that need to be output according to the amount of external light. According to the determined number, the lamps are operated in the order of the smallest operating time. Each of the lamps in operation continuously collects operation time data, stores operation time data in a memory, and updates data related to the life of the lamp.

The ratio of individual lamps (LEDs) operating in the lamp module is divided into, for example, 10 steps, and the lighting target (number of lights) can be determined according to the illuminance of external light, so that the overall brightness of the lighting device can be adjusted. In this case, if the operating time of the lamp to be lit in step 1 increases, the life of the lamp is shortened, and the operating time of the target LED to be lit in step 10 is reduced, which increases the lifespan of the lamp module as a whole. However, this problem can be solved by changing the order of the output lamps based on the operation time data.

In the lighting apparatus of the present invention, as the operation button is pressed, the operation control unit may turn on individual lamps step by step in the order of lamps having a small operation time, and each time the operation button is pressed. The lighting stage and sequence can be set so that the one with the least lighting time is operated at the first level of illumination. In addition, the memory includes operation time data for each lamp of the lamp module, and may further include alignment data related to the operation order of the individual lamps and information on the priority of the lamp, which is the same operation time. Alignment data of individual lamps is not stored in the memory, and when the lighting device is operated, the control unit may determine the order of operation through real-time calculation.

On the other hand, in the present invention, when the difference between the maximum and minimum values of the operation time of the plurality of lamps is not large, for example, if the difference is equalized within 5 to 10%, the entire lamp life is recognized as a leveled value, and the lamp operation time data is It can also be initialized. 3 is a flow chart showing a process of initializing life data of a lighting device according to the present invention. Time data of operated lamps and non-operating lamps are checked, and the maximum and minimum values are extracted and the difference is compared. If the difference is less than 10% based on the maximum value, it is determined that the lifetime of the lamp has been equalized, the time data in the memory is initialized (time data is deleted), and then time data for the lamp operation may be newly collected. Such a process is advantageous, for example, in the case of reducing the size of the lighting equipment, reducing the total number of parts, and implementing an economical product, or when continuing the process of equalizing the life of the lighting equipment without increasing the amount of memory. .

As an example, 10 LED bars were configured as a lamp module, and an Arduino with a built-in memory as a control unit and a ballast (SMPS) as a power supply unit were prepared. In addition, it further includes a switching unit 145 for intermittently controlling a voltage applied to the lamp between the operation control unit Arduino and the LED lamp. 4 schematically shows a circuit diagram of a lighting device according to an embodiment of the present invention. While the signal output to the Arduino is 5V, the output voltage of the LED used is 12V, so the DG-202 chip is used as the switching unit as an IC chip that selectively outputs 12V by receiving the Arduino signal. Inputs below 0.8V are input as logic 0 and do not output, and inputs above 2.4V are input as logic 1 and output, so that the voltage (12V) to be input to the LED with the Arduino signal (5V) can be selected.

After completing the circuit by connecting the ballast with the Arduino, the LED and the IC chip, the ballast that received 220V AC voltage output 12V, and the switching part selectively applied 12V to the LED by receiving the Arduino signal. It was confirmed that heat was severe due to overcurrent (about 160mV) in the LED, and a resistor was attached in front of each LED stage to lower the current. The control unit adjusts the number of LEDs and searches for less used LEDs, and each time the operation button is pressed. It was confirmed that the step-by-step sequence of lighting operates so that the one with the least lighting time is the first-stage illuminance.

It was tested whether the order of the lamps to be lit varies depending on the operating time (life time) of the individual lamps. A total of 12 LEDs were placed on the board and electrically connected to selectively apply power according to the control unit's algorithm. 5A and 5B are photographs showing a lamp operated according to the degree of life span. As a result of the first LED lighting according to the external illuminance, the six LEDs on the upper right were turned on (Fig. 5a), and the lighting time for each LED after a certain period of time was checked and shown in Table 1 (lighting data A). The lighting time data of the lit LEDs was an average of 75 hours, and the lighting time of the unlit LED was about 40 hours on average. From this result, these unlit LEDs should be turned on in the same illuminance afterwards. Fig. 5b shows that the six LEDs on the lower left are turned on as a result of the operation under similar illuminance. After a certain period of time, the overall LED lighting time data can be checked in Table 1 (Lighting Data B). On average, it can be seen that the operating time is uniform in the range of 95 to 100 hours, so that the life consumption of the LED is equalized.

LED One 2 3 4 5 6 7 8 9 10 11 12 Lighting data A 44 37 40 43 35 36 77 78 74 74 75 77 Lighting data B 104 102 105 108 100 101 94 95 91 91 93 94

6A to 6C are photographs showing the lighting degree of the lighting device according to the amount of external light. The illuminance was divided from 1st (brightest) to 10th (darkest) according to the external brightness, and it was confirmed that the number of individual LEDs of the lighting device changed when the external illuminance was changed. When it is brightest, only the minimum lighting is operated (Fig. 6a), and when the external brightness decreases thereafter, the number of operation LEDs of the lighting device increases (Fig. 6b), and all LEDs light up when it is confirmed with the illuminance sensor that the external brightness becomes the lowest. Became (Fig. 6c).

From the results of FIGS. 5A to 6C, it can be seen that in the lighting apparatus of the present invention, not only the number of LEDs to be lit varies depending on the external illumination, but also the order of the LEDs operated according to the life time is different.

Although the lighting equipment of the present invention is suitable for use as indoor lighting such as home or office, it can be sufficiently used in partially open spaces or completely open outdoors. It can be effectively used for products or space facilities.

Although the present invention has been exemplarily described above through preferred embodiments, the present invention is not limited to such specific embodiments, and the technical idea presented in the present invention, specifically, various forms within the scope described in the claims. It may be modified, changed, or improved.

100: lighting equipment 110: lamp module
112: individual lamp 120: power supply
130: illuminance sensor 140: motion control unit
145: switching unit 150: memory
160: action button

Claims (5)

Lamp module in which a plurality of individual lamps are arranged in parallel,
A power supply for supplying power to the lamp module,
An illuminance sensor that detects the amount of light from outside,
An operation control unit for selectively controlling power supply to the lamp of the lamp module and controlling an operation sequence of individual lamps according to external light detected by the illuminance sensor,
A nonvolatile memory for storing the operating time of each lamp of the lamp module,
Including an operation button for starting or stopping the operation of the lamp module
External illuminance detection and life-leveling lighting equipment.
The method of claim 1,
The operation control unit checks the operating time of individual lamps of the lamp module, determines the number of lamps to be operated according to the amount of external light transmitted by the illuminance sensor, and operates the lamps in the order of decreasing operation time according to the determined number. External illuminance detection and life-leveling lighting equipment, characterized in that to let.
The method of claim 1,
When the operation button is pressed, the operation control unit turns on individual lamps step by step in order of lamps having a small operation time.
The method of claim 1,
An external illuminance sensing and life-leveling lighting device, characterized in that it further comprises a switching unit intermittently controlling a voltage applied to the lamp by being posted between the operation control unit and the lamp.
The method of claim 1,
When the difference between the maximum and minimum values of the operation time of a plurality of lamps is equalized within 5 to 10%, the entire lamp life is recognized as a leveled value and lamp operation time data is initialized. device.

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