CN102665333A - Light source system self-adapting according to size and brightness of space - Google Patents

Abstract

The invention discloses a self-adaptive light source system according to space size and brightness, which includes a distance measuring unit, a main control calculation unit, a light source driving unit and a light source; the distance measurement unit is connected to the main control calculation unit, and the distance measurement unit is used for sensing Measure the size of the environment space, and send the distance signal to the main control computing unit; the main control computing unit is connected to the light source drive unit, and the main control calculation unit analyzes and compares the real-time distance signal with the preset lighting parameters, and sends a corresponding control signal to the light source driver unit; the light source drive unit is connected to the light source, the light source drive unit receives the control signal sent by the main control computing unit, and provides a stable current for the light source; the light source receives the current provided by the light source drive unit, so that the light source can automatically adjust its light source according to the size of the irradiation space Illumination parameters; the light source system of the present invention can maintain stable illumination quality in different illumination spaces.

Description

Adaptive light source system according to the size of the space

technical field

The invention relates to the field of drive regulation and control of light-emitting light sources, in particular to a light source system with adaptive brightness according to space size.

Background technique

In interior lighting design, the main considerations can be divided into two, the first is illuminance, and the second is some interaction characteristics between the light source and the environment. The illuminance will have different numerical specifications according to different working environments and users. The interaction between the light source and the environment is mainly to discuss the arrangement of the light source.

The setting of the illuminance of the light source is mainly determined by the function of the environment and the users. Generally speaking, the illuminance of the indoor environment of the home and the restaurant is set at about 200~500 (lx), while for the display counter of the store, A higher illuminance is required, about 1000~2000 (lx). In addition, because the human eye will reduce the light penetration rate as it ages, if it is used for the older population, it will be slightly higher than the standard value. Conversely, if it is used for the younger population, the brightness of the light source will increase. It can be slightly lower than the standard value of 30~70%. In addition, light sources can be divided into two types: functional light sources and background light sources. Functional means that they have specific uses, such as reading, word processing, computer screens, etc. Functional light sources are usually directional and focus on specific In the range, the brightness is also higher. The other is the background light source, which mainly provides the overall lighting of the environment, and can also be used as an auxiliary functional light source, and its brightness is low. the

At present, the light sources used for lighting mainly include fluorescent lamps, incandescent lamps, LED lamps and high-pressure discharge lamps for special lighting. Their standard power is not continuous. The power standards of various types of fluorescent lamps are 14W, 18W, 21W, 24W , 28W, 30W, 35W, 36W, 39W, 54W, 58W, 80W. LED fluorescent lamps are classified according to the size and length of the tube. The common ones are T5, T8, and T10. The lengths are: 0.3 meters, 0.6 meters, 0.9 meters, 1.2 meters, 1.5 meters, 1.8 meters, and 2.4 meters. The power is: 3W, 4W, 6W, 8W, 10W, 12W, 15W, 18W, 20W, 22W, 25W, 28W. The power of the existing light sources is generally fixed. When users purchase lamps, they will choose lamps with different powers according to their own lighting needs. When the size of the lighting environment changes, the lamps must be reselected or adjusted. Therefore, the fixed power light source portability is poor. Some lamps whose brightness can be adjusted, such as desk lamps, must be manually adjusted to obtain the required brightness. With the continuous advancement of science and technology, the smart home appliance system will become an important part of family life in the future, which will greatly facilitate people's daily life. Under the requirements of the future intelligent lighting system, a simple and universal adaptive luminous light source with continuously variable power is needed, which can solve the power discontinuity of the existing lighting system while saving energy. Chinese patent 201020622326, an adaptive LED lighting device. The disclosed adaptive LED lighting device can adjust the brightness of the LED light source according to the information of illuminance perception, which saves energy, but does not involve the adaptation of the lighting space. The intelligent light source system with adaptive brightness according to the size of the illuminated space can effectively solve the universality of the light source in different sizes of use occasions. Due to the intelligent adjustable characteristics of the above-mentioned light sources, the light source will automatically reduce the light output in places with narrow spaces, and will automatically increase the light output in places with large spaces, so as to provide a lighting environment suitable for human life and work, and ensure the safety of people's eyes. Healthy, and there will be no waste of light sources, saving energy. the

Invention content

In view of the deficiencies of the prior art, the object of the present invention is to provide an adaptive luminous light source system according to the size of the space, which can automatically adjust the luminous brightness according to the change of the space size; and realize automatic energy saving of the luminous light source.

In order to achieve the above object, the technical solution of the present invention is: a light source system that adapts to the brightness of the space, including a distance measuring unit 1, a main control calculation unit 2, a light source driving unit 3 and a light source 4; the distance measuring unit 1 Connect the main control calculation unit 2, the distance measuring unit 1 is used to sense and measure the size of the environmental space, and send the distance signal to the main control calculation unit 2; the main control calculation unit 2 is connected to the light source drive unit 3, and the main control calculation unit 2 uses the real-time distance The signal is analyzed and compared with the preset lighting parameters, and a corresponding control signal is sent to the light source driving unit 3; The current; so that the light source can automatically adjust its luminous flux or light intensity according to the size of the space. The light source 4 receives the current provided by the light source driving unit 3 and emits light. the

The above distance measuring unit 1 uses ultrasonic distance measurement, infrared distance measurement, laser distance measurement or other non-contact distance measurement methods. the

The above-mentioned light source 4 is a visible light source, a white light source, an ultraviolet light source or an infrared light source. the

The above-mentioned light source 4 is an incandescent lamp, a fluorescent lamp, an LED solid-state lamp or a high-pressure gas discharge lamp. the

The above-mentioned light source system automatically adjusts the lighting parameters of the light source as the size of the lighting space changes according to the set lighting conditions to obtain stable lighting quality; the above-mentioned preset lighting parameters are illuminance, light intensity, luminous flux, color temperature, color rendering index or Chromaticity coordinates. the

The distance measuring unit 1 measures distances in a single direction or multiple directions, and the main control computing unit 2 calculates the size of a single direction or a comprehensive space. the

The ranging unit is connected with the main control computing unit, and transmits the spatial distance signal to the main control computing unit. The main control calculation unit calculates the required control signal through the preset distance and light parameter relationship of the light source, so as to adjust the real-time light intensity. The relationship between the preset distance and the lighting parameters of the light source is set by the user. The purpose is to maintain excellent lighting quality according to the size of the lighting space. For example, the light intensity of the light source increases linearly or nonlinearly with the increase of the space distance. , to stabilize the average intensity of the illumination space; another example, the luminous flux of the light source increases linearly or non-linearly with the increase of the space distance, so as to keep the illumination of the illumination space stable. the

The light source driving unit is respectively connected with the main control computing unit and the light source, provides different currents for the light source according to the control signal of the main control computing circuit, and changes the luminous intensity of the light source through the change of the current. the

Compared with prior art, the present invention has following benefit:

The distance signal obtained by the distance measuring unit is used as the feedback and control quantity, and the distance measurement technology is introduced to link the space size with the luminous brightness, so as to realize the purpose of changing the environment at any time and saving energy; the whole process is automatically completed by the main control computer, which is easy to use.

Description of drawings

Fig. 1 is a schematic diagram of a light source system adaptive to brightness according to space size according to the present invention. the

Detailed ways

Example 1

As shown in FIG. 1 , a space-adaptive light source system of the present invention includes a main control calculation unit 2 , a light source drive unit 3 , a distance measuring unit 1 and a light source 4 .

The ranging unit 1 uses the principle of laser ranging to perform sensing ranging. When the laser sensor is working, the laser diode is aimed at the target and emits laser pulses. After being reflected by the target, the laser light scatters in all directions. Part of the scattered light returns to the sensor receiver, where it is captured by the optical system and imaged onto the avalanche photodiode. An avalanche photodiode is an optical sensor with internal amplification so that it can detect extremely faint light signals. The distance to the target can be determined by recording and processing the time elapsed from the time the light pulse is sent until it is received back. The distance measuring unit 1 using the principle of the laser ranging sensor is used to sense the size of the environmental space and send the distance signal to the main control calculation unit; the main control calculation unit 2 is used to analyze and compare the real-time distance signal with the preset lighting parameters, Send a corresponding control signal to the light source driving unit 3, the light source driving unit 3 receives the control signal sent by the main control calculation unit 2, and provides a suitable current for the light source 4, so that the light source can automatically adjust the light source illumination parameters according to the size of the space, to obtain Stable lighting quality, these preset lighting parameters can be illuminance, or light intensity, or luminous flux, or color temperature, or color rendering index, or chromaticity coordinates, etc. The light source 4 receives the current provided by the light source drive unit and emits light. the

The distance measuring unit 1 can measure the distance in a single direction or multiple directions, and the main control computer 2 can calculate the size of a single direction or a comprehensive space. the

The light source 4 may be a visible light source, a white light source, an ultraviolet light source or an infrared light source. the

The light source 4 may be an incandescent lamp, a fluorescent lamp, an LED solid-state lamp, or any light source such as a high-pressure gas discharge lamp. the

Example 2

Embodiment 2 is similar to Embodiment 1, except that the distance measuring unit 1 utilizes the principle of infrared distance measurement for sensor distance measurement.

The distance measuring unit 1 utilizes the principle that the infrared signal encounters obstacles with different reflection intensities at different distances to detect the distance of obstacles. The distance measuring unit 1 has a pair of infrared signal emitting and receiving diodes. The emitting tube emits an infrared signal of a specific frequency, and the receiving tube receives the infrared signal of this frequency. When the infrared detection direction encounters an obstacle, the infrared signal is reflected back and received. After receiving and processing, the tube returns to the main control computing unit 2 through the digital sensor interface, and the main control computing unit 2 can use the infrared return signal to identify changes in the surrounding environment. the

Example 3

Embodiment 3 is similar to Embodiment 1 and Embodiment 2, except that the distance measuring unit 1 uses the principle of ultrasonic distance measurement for sensor distance measurement.

Claims (6)

1. one kind according to the adaptive light-source system of space size brightness, it is characterized in that: comprise range cells (1), master control computing unit (2), light source driving units (3) and light source (4); Said range cells (1) connects master control computing unit (2), and range cells (1) is used for the size of measurement of inductance environment space, and distance signal is sent to master control computing unit (2); Master control computing unit (2) connects light source driving units (3), and master control computing unit (2) utilizes real-time distance signal and preset illumination parameter to analyze and contrast, and sends corresponding control signal and gives light source driving units (3); Light source driving units (3) connects light source (4), and light source driving units (3) receives the control signal that master control computing unit (2) sends, and for light source (4) stable electric current is provided; Light source (4) receives the electric current that light source driving units (3) provides, and sends illumination.

2. light-source system according to claim 1 is characterized in that: above-mentioned range cells (1) is used ultrasonic ranging, infrared distance measurement, laser ranging or other various contactless distance measuring methods.

3. light-source system according to claim 1 is characterized in that: above-mentioned light source (4) is visible light source, white light source, ultraviolet source or infrared light supply.

4. light-source system according to claim 1 is characterized in that: above-mentioned light source (4) is incandescent lamp, fluorescent lamp, LED solid state lamp or high-voltage gas discharging light.

5. light-source system according to claim 1 is characterized in that: above-mentioned preset illumination parameter is illumination, light intensity, luminous flux, colour temperature, color rendering index or chromaticity coordinate.

6. light-source system according to claim 1 is characterized in that: above-mentioned range cells (1) is measured the distance of single direction or a plurality of directions, and above-mentioned master control computing unit (2) calculates the size in single direction or comprehensive space.

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