KR100216975B1 - Illumination control method for inverter stand - Google Patents

Abstract

The present invention relates to an inverter stand, in which an operation power supplied to a lamp L is controlled by illuminance of a bottom surface sensed by a bottom surface illuminance sensing unit 900 to control the illuminance of the lamp L, The method includes the steps of sensing the illuminance of the bottom surface, sensing the illuminance of the surroundings, determining whether the illuminance of the illuminance of the illuminance of the illuminance of the illuminating surface is equal to the illuminance of the illuminance of the illuminating illuminance, The operating power of the lamp L is adjusted so that the illuminance corresponding to the illuminance of the floor surface can be maintained. If the difference exceeds the predetermined range, the illuminance of the floor surface differs from that of the surroundings And a control unit for controlling the operation power supplied to the lamp L by the oscillation frequency so as to maintain the illuminance corresponding to the ambient illuminance, The brightness of the lamp can be adjusted by adjusting the operating power of the lamp according to the illuminance of the bottom surface and the lamp power can be adjusted by adjusting the operation power supplied to the lamp according to the illuminance of the surroundings have.

Description

How to adjust the brightness of inverter stand according to ambient brightness

The present invention relates to an inverter stand, and more particularly, to a method of adjusting the illuminance of an inverter stand according to the ambient brightness, which can automatically adjust the brightness of the lamp to correspond to the brightness of the lamp so as to correspond to the brightness of the surroundings.

As shown in FIGS. 1 and 2, a general inverter stand includes a constant voltage section 101 configured to include a bridge diode and a Zener diode to supply a constant voltage to the set, and a switch including a touch sensor and configured to set an operation mode of the set A key input unit 102, a roughness detecting unit 109 installed downward at the end of the lamp shade 810 to detect the illuminance of the floor surface, a switch for receiving illuminance data and key input, A microprocessor 103 for outputting a signal, a plurality of capacitors and resistors for converting the oscillation IC and an oscillation frequency of the oscillation IC, and receives a switching signal output from the microprocessor 103, A frequency converter 104 for converting an oscillation frequency to be supplied, a frequency converter 104 for receiving a frequency output from the frequency converter 104, System and a lamp driving unit 105 is provided with effect transistor and this linkage to the transformer to adjust the level of the operating power supplied to the lamp (L), it consists of a display unit 106, such as displaying an operating state of the set.

In this inverter stand, when the main power is supplied by the operation of the touch switch of the key input unit 102, the time constant of the frequency conversion unit 104 is determined by the switching signal output from the microprocessor 103, And oscillates a frequency of 90 KHz to be applied to the transducer side of the lamp driving unit 105. Then, the plurality of field effect transistors alternately operate by the voltage generated on the secondary side of the transformer to regulate the operation power supplied to the lamp (L). At this time, the lighting of the lamp L is performed by discharging the power supplied from the constant voltage unit 101 through the transformer formed at the front end of the lamp L, the self-resistance of the lamp, and the loops formed by the plurality of field effect transistors.

Then, when the roughness of the bottom surface sensed by the roughness sensing unit 109 changes, the time constant of the frequency conversion unit 104 is converted to adjust the brightness of light generated in the lamp L, So that the corresponding oscillation frequency is oscillated. Thus, the discharge amount of the lamp driving unit 105 is adjusted, and the illuminance of the lamp L can be controlled to be constant.

Here, it can be seen that the larger the oscillation frequency that is oscillated in the frequency conversion unit 104 and supplied to the lamp driving unit 105, the smaller the current supplied to the lamp L, and the light of the lamp L becomes weaker.

However, in the conventional inverter stand, since the operation power supplied to the lamp is adjusted only by the illuminance of the floor surface sensed by the roughness sensor 109, the brightness of the lamp can not cope with the ambient brightness. In other words, when a small space is to be illuminated by using an inverter stand as a local illumination separate from a dual illumination state, that is, a whole illumination, even if the operation power of the lamp is adjusted according to the variation of the illumination of the floor, However, if you want to illuminate a large space in the stand-alone lighting condition of the inverter stand alone, the light of the lamp is too dark to illuminate a wide space.

In order to solve this problem, it is an object of the present invention to provide a method of adjusting the illuminance of an inverter stand according to the ambient brightness, which can automatically adjust the brightness of the lamp to correspond to the brightness of the surroundings.

According to an aspect of the present invention, there is provided a method of controlling an illuminance of a lamp by controlling operation power supplied to a lamp by illuminance of a floor surface sensed by a bottom surface illuminance sensing means, Determining whether the floor surface and the surrounding illuminance are the same or not; comparing the illuminance of the floor surface and the surrounding illuminance if the difference between the floor illuminance and the ambient illuminance is within a predetermined range The lighting power of the lamp L is adjusted so that the illuminance corresponding to the illuminance of the floor surface can be maintained. If the difference exceeds the predetermined range, the illuminance of the floor surface and the surroundings are not the same ), Oscillating a frequency corresponding thereto so as to maintain the illuminance corresponding to the ambient illuminance, and controlling the operating power supplied to the lamp by the oscillation frequency Air will be, characterized in that to perform the step of adjusting the light intensity.

1 is a block diagram showing the configuration of a general inverter stand;

Figure 2 is a perspective view of a typical inverter stand.

3 is a block diagram showing a configuration of an inverter stand according to the present invention.

4 is a perspective view of an inverter stand according to the present invention;

FIG. 5 is a flow chart showing an operation state of the inverter stand according to the present invention; FIG.

FIG. 6 is a chart showing one embodiment of the oscillation frequency corresponding to the ambient brightness.

DESCRIPTION OF THE REFERENCE NUMERALS

100: constant voltage unit 200: key input unit

300: Microprocessor 400: Frequency converter

500: a lamp driving unit 600:

700: Data storage unit 800: Peripheral image sensing unit

900: bottom surface guide portion 810: lamp shade

L: Lamp

As shown in FIGS. 3 and 4, the inverter stand adopted in accordance with the embodiment of the present invention includes a constant voltage section 100 for supplying a constant voltage to a set, a key input section 200 consisting of keys for setting the operation mode of the set A floor surface roughness sensing unit 900 installed to face the end of the lamp shade 810 and sensing the illuminance of the floor surface, A microprocessor 300 for controlling the overall operation of the set on the basis of illuminance and key input of the illuminance of the bottom surface and the surroundings of the surroundings, and a microprocessor 300 receiving the switching signal output from the microprocessor 300 A frequency conversion unit 400 for converting an oscillation frequency supplied to the lamp driving unit 400 and a control unit 400 for controlling the level of the operation power supplied to the lamp L by receiving the oscillation frequency outputted from the frequency conversion unit 400 Lamp bulb It consists of a part 500, a display unit 600, a data which is various types of data and the stored storage unit 700 for displaying an operating state of the set.

5 is a flowchart illustrating an operation state of the inverter stand according to an embodiment of the present invention. Referring to FIG. 5, the operation power supplied to the lamp L is controlled by illuminance of a receiving surface sensed by the bottom surface roughness sensing unit 900 A step of sensing the illuminance of the floor surface, a step of sensing the illuminance of the surroundings, a step of comparing the illuminance of the floor surface and the surroundings to determine whether they are the same, The operating power of the lamp L is adjusted so that the illuminance corresponding to the illuminance of the bottom surface can be maintained. If the difference is large (the difference between the bottom surface and the ambient illuminance exceeds a predetermined range) And controlling the operation power supplied to the lamp L by the oscillation frequency to adjust the illuminance.

FIG. 6 is a graph showing the relationship between the ambient brightness and the oscillation frequency in the case of adjusting the oscillation frequency according to the ambient brightness.

When the main power is supplied (S1) by the operation of the touch switch of the key input unit 200 while the standby state is maintained, the present invention having the above-described structure is operated by the frequency conversion unit 400 And the oscillation IC oscillates the oscillation frequency of about 70 KHz (the frequency for adjusting the operation power source for driving the lighting initial lamp L) and applies it to the transducer side of the lamp driver 500 . Then, the plurality of field effect transistors alternately operate by the voltage generated on the secondary side of the transformer to regulate the operation power supplied to the lamp (L). At this time, the lighting of the lamp L is controlled such that the power supplied from the constant voltage unit 100 passes through the transformer formed at the front end of the lamp L and the self resistance of the lamp L and the loops formed by the plurality of field effect transistors, (S2).

When the illuminance A of the bottom surface sensed by the bottom surface illuminance sensing unit 900 is changed to S4 in order to control the brightness of the light generated in the lamp L, The oscillation IC is caused to oscillate at an oscillation frequency corresponding to the oscillation frequency (S5). Then, the discharge amount of the lamp driving unit 500 is adjusted to adjust the illuminance of the lamp L (S6).

The microprocessor 300 is controlled by the illuminance A sensed by the bottom illuminance sensing unit 900 and the illuminance B detected by the ambient illuminance sensing unit 800 Is applied. As shown in FIG. 6, the sensing voltage applied to the microprocessor 300 according to the ambient illuminance B is set to a constant value (0.5 V) every time the illuminance increases by a predetermined value (100 Lux) Is applied to the microprocessor 300.

Then, the microprocessor 300 receives the sensing voltage applied from the peripheral roughness sensing unit 800 and recognizes the brightness of the surroundings. Next, it is determined whether the illuminance B detected by the surrounding roughness sensing unit 800 of the illuminance A detected by the bottom surface illuminance sensing unit 900 is the same (S8).

The reason for comparing whether the illuminance (A) of the floor surface and the illuminance (B) of the surroundings are the same is to grasp whether the illuminating state is the dual illumination state or the inverter stand alone. (B) is within a certain range, it is determined that the illuminance of the bottom surface is the same as the illuminance of the surroundings (double illumination state), so that it is not necessary to adjust the illuminance according to the surrounding brightness. It is necessary to adjust the illuminance according to the surrounding brightness by judging that the illuminance of the surrounding illuminance (B) is different from the illuminance of the surrounding illuminance (independent illumination state).

Therefore, when the roughness A of the bottom surface and the roughness B of the periphery are the same (a double illumination state), the illuminance detected by the bottom surface roughness sensing unit 900 is supplied to the lamp L And oscillates the oscillation frequency for adjusting the operation power. The level of the operation power supplied to the lamp L is controlled by the lamp driving unit 500 to which the oscillation frequency oscillated in the frequency conversion unit 400 having a different frequency is applied according to the illuminance of the floor surface, To adjust the brightness of the image.

However, when the illuminance A of the floor and the illuminance B of the surroundings are different from each other, that is, in the case of a single illumination state, the microprocessor 300 sets the switching signal (S9) from the data storage unit 700 and applies it to the frequency converter 400. [ 6, when the illuminance B sensed by the surrounding roughness sensing unit 800 is sensed as shown in FIG. 6, the frequency converter 400 can oscillate the oscillation frequency as shown in FIG. 6 And applies the generated switching signal to the frequency converter 400.

Accordingly, the frequency converter 400 oscillates the oscillation frequency corresponding to the switching signal corresponding to the ambient illuminance B and applies the oscillation frequency to the lamp driver 500. Thus, the lamp driver 500 can adjust the luminance The level of the operation power supplied to the lamp L is adjusted by receiving the oscillation frequency of the frequency converter 400 to be converted, thereby adjusting the brightness of the lamp L (S11).

As shown in FIG. 6, the darker the surroundings, the lower the oscillation frequency (up to 90 KHz to the lowest 50 KHz), and the illuminance of the lamp L becomes higher.

Preferably, the operation for adjusting the operation power supplied to the lamp L by the illuminance sensed by the peripheral roughness sensing unit 800 is not generally used, so that the key input of the key input unit 200 It is possible to increase the functionality of the inverter stand while increasing the commerciality by executing only when the operation mode for performing the operation is set.

The present invention can adjust the brightness of the lamp according to the illuminance of the lower part of the lamp, that is, the bottom surface of the lamp, and adjust the brightness of the lamp according to the illuminance around the lamp shade It can also be used to illuminate a large space.

Claims (4)

Sensing the illuminance of the bottom surface of the lamp L by adjusting the operation power supplied to the lamp L by the illuminance of the bottom surface sensed by the bottom surface illuminance sensing unit 900, ; Sensing ambient illuminance; Comparing the roughness of the floor surface with the roughness of the surroundings; The operating power of the lamp L is adjusted so that the illuminance corresponding to the illuminance of the floor surface can be maintained if the same (the difference between the bottom surface and the ambient illuminance is within a certain range), and when the difference (difference between the bottom surface and the ambient illuminance exceeds a predetermined range) Oscillating the corresponding frequency so as to maintain the illuminance corresponding to the ambient illuminance; And controlling the operation power supplied to the lamp (L) by the oscillation frequency to adjust the illuminance. The method according to claim 1, wherein the ambient illuminance is an illuminance sensed by a peripheral illuminated area sensing unit (800) installed on a lamp shade (810). The method as claimed in claim 1, wherein the operating power of the lamp (L) is adjusted by 5 KHz every time the ambient illuminance increases by 100 Lux. The method as claimed in claim 1, wherein the brightness of the lamp (L) is controlled by the brightness of the surroundings, only when the operation mode is set by key input.