Light detection device and adjustment method

Abstract

The invention discloses a light detection device and an adjusting method. The device comprises a lamplight detection light path, a controller, a box body and a remote control unit, the light detection light path comprises a first detection light path and a second detection light path which are parallel to each other, is used for calculating a color rendering index in real time through spectral imaging and a multiband analysis algorithm, and is also used for directly quantifying the ambient light intensity through an illumination sensing chip; the box body is provided with two independent shading cavities which are used for accommodating the first detection light path and the second detection light path respectively, the inner wall is blackened, the distance between the cavities is greater than or equal to 5mm, and the cavities are isolated by a shading partition plate; the controller is respectively connected with the first detection light path and the second detection light path and is used for generating a current light detection result according to the color rendering index and the ambient light intensity and dynamically adjusting a color temperature compensation coefficient and a brightness compensation coefficient based on a preset target value so as to generate adjustment parameters; the remote control unit is connected with the controller and used for generating linkage signals according to the adjusting parameters and sending the linkage signals to the lamp to adjust the color temperature and brightness of the lamp.

Description

Technical Field

[0001] This invention belongs to the technical field of spectrometers, specifically relating to a light detection device and adjustment method. Background Technology

[0002] Currently, indoor lighting control technology mainly relies on single-parameter detection methods, which has the following limitations:

[0003] Limited Detection Dimensions: Traditional devices often use independent illuminance sensors or spectrometers, which cannot simultaneously acquire color rendering index (Ra, R9, Rf, Rg) and ambient light intensity, resulting in a lack of multi-parameter synergistic optimization capabilities in adjustment strategies. For example, relying solely on illuminance adjustment may overlook the impact of color rendering on visual comfort.

[0004] Low hardware integration: In existing technologies, color rendering index detection usually relies on laboratory-grade spectrometers, which are bulky and expensive, making them difficult to apply to ordinary indoor scenarios; while simplified algorithms (such as estimation based on RGB sensors) suffer from insufficient accuracy.

[0005] Dynamic adjustment lag: Most systems use unidirectional control logic, which cannot link multiple lamp parameters (such as color temperature and brightness) in real time, resulting in adjustment delay or local overexposure / underexposure problems.

[0006] Battery life and structural limitations: Traditional portable detection devices have limited battery capacity, making it difficult to support long-term continuous monitoring, and their poor hardware expandability makes them incompatible with the needs of multi-light source scenarios. Summary of the Invention

[0007] In view of this, the main objective of the present invention is to provide a light detection device and adjustment method based on indoor light detection.

[0008] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0009] A light detection device, comprising a light detection optical path, a controller, a housing, and a remote control unit;

[0010] The light detection optical path includes two parallel first detection optical paths and a second detection optical path, which are used to calculate the color rendering index in real time through spectral imaging and multi-band analysis algorithms, and also to directly quantify the ambient light intensity through the illuminance sensing chip.

[0011] The box body is provided with two independent light-shielding cavities, which respectively accommodate the first detection optical path and the second detection optical path. The inner walls of the independent light-shielding cavities are blackened, the cavity spacing is ≥5mm and they are isolated by light-shielding partitions.

[0012] The controller is connected to the first detection optical path and the second detection optical path respectively, and is used to generate the current light detection result based on the color rendering index and ambient light intensity; and dynamically adjust the color temperature compensation coefficient and brightness compensation coefficient based on a preset target value to generate adjustment parameters;

[0013] The remote control unit is connected to the controller and is used to generate a linkage signal based on the adjustment parameters and send it to the lamp to adjust the color temperature and brightness of the lamp.

[0014] Preferably, the first detection optical path is used to calculate the color rendering index in real time through spectral imaging and multi-band analysis algorithms; the second detection optical path is used to directly quantify the ambient light intensity through an illuminance sensing chip.

[0015] Preferably, the first detection optical path includes:

[0016] The first homogenizing glass is located at the entrance of the light path and is used to homogenize the ambient light;

[0017] A mirrored glass is disposed on the reflected light path of the first light-diffusing glass to receive uniform light signals from the first light-diffusing glass and guide the light signals to the camera through a reflection mechanism; the incident angle of the mirrored glass is fixed at 45°.

[0018] The camera is located at the end of the reflected light path of the mirrored glass, used to receive light signals reflected by the mirrored glass; it is also used to capture spectral images and analyze spectral data and calculate color rendering index through built-in algorithms.

[0019] Preferably, the camera, located at the end of the reflected light path of the mirrored glass, is equipped with an IMX335 CMOS sensor and a narrowband filter array, used to capture spectral images and analyze spectral data and calculate the color rendering index using a built-in multi-band analysis algorithm; the multi-band analysis algorithm includes the following steps:

[0020] S1. Acquire spectral images in the 400-700nm band based on a narrowband filter array, and divide them into 6 continuous sub-bands: 400-450nm, 450-500nm, 500-550nm, 550-600nm, 600-650nm, and 650-700nm.

[0021] S2. Integrate the gray values ​​of each sub-band image to calculate the spectral power distribution;

[0022] S3. Based on the spectral power distribution and the CIE1931 standard colorimetric system, calculate the tristimulus values ​​(X, Y, Z) and color rendering indices (Ra, R9, Rf, Rg).

[0023] Preferably, the second detection optical path includes:

[0024] The second homogenizing glass is located at the entrance of the light path and is used to homogenize ambient light and eliminate directional deviations in light.

[0025] An illuminance sensor chip is disposed in the transmission light path of the second homogenizing glass and is used to output the ambient light intensity value.

[0026] Preferably, it also includes a remote control unit.

[0027] The controller is also used to determine adjustment parameters based on the target setting and the current light detection results;

[0028] The controller is specifically used to compare the color rendering index (Ra) with a preset target value. If Ra < the lower limit of the preset target value, the color temperature compensation coefficient ΔT = 0.02 × (target value - Ra) is increased. The controller also compares the ambient light intensity (L) with a preset target value. If L < the lower limit of the target value, the brightness compensation coefficient ΔB = 0.05 × (target value - L) is increased. The adjustment parameters are ΔT and ΔB, where ΔT ranges from 0 to 1.5 and ΔB ranges from 0 to 10.

[0029] The remote control unit is connected to the controller and is used to generate a linkage signal according to the adjustment parameters and send it to the lamp to adjust the color temperature and brightness of the lamp.

[0030] Preferably, the controller is specifically used to compare the color rendering index and ambient light intensity with preset target values; and dynamically adjust the color temperature compensation coefficient and brightness compensation coefficient according to the comparison results to generate the adjustment parameters.

[0031] A method for adjusting lighting, the method being:

[0032] S1. Obtain the color rendering index (Ra, R9, Rf, Rg) of ambient light through a multi-band analysis algorithm of the first detection optical path;

[0033] S2. Obtain the ambient light intensity value (L) through the illuminance sensor chip in the second detection optical path;

[0034] S3. The controller compares the color rendering index and intensity value with the preset target value to generate the current light detection result;

[0035] S4. The controller dynamically adjusts the color temperature compensation coefficient (ΔT) and brightness compensation coefficient (ΔB) based on the detection results, and generates adjustment parameters;

[0036] S5. The remote control unit generates a linkage signal based on the adjustment parameters and sends it to the lamp to adjust the color temperature and brightness of the lamp to the target range.

[0037] Preferably, the method further includes

[0038] Determine the adjustment parameters based on the target setting and current light detection results;

[0039] A linkage signal is generated based on the adjustment parameters and sent to the lamps to adjust the color temperature and brightness of the lamps.

[0040] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0041] This invention employs parallel dual-optical-path frequency division technology. The first optical path (monochromatic glass → specular reflection → camera) calculates the color rendering index (Ra, R9, Rf, Rg) in real time through spectral imaging and multi-band analysis algorithms. The second optical path (monochromatic glass → illuminance sensor chip) directly quantifies the ambient light intensity (unit: lux), achieving synchronous measurement of color rendering index (Ra / R9 / Rf / Rg) and ambient light intensity (lux), reducing the detection time to within 0.5 seconds.

[0042] This invention achieves for the first time the simultaneous detection of color rendering index (Ra / R9 / Rf / Rg) and ambient light intensity, with a color rendering index error ≤1.2 (traditional RGB sensor error ≥5) and an intensity error ≤3% (traditional integrated equipment error ≥10%).

[0043] This invention reduces the detection time to 0.5 seconds (compared to ≥2 seconds for traditional serial detection) through a dual-optical-path parallel design and algorithm optimization, thus solving the problem of dynamic adjustment lag.

[0044] The box of this invention has a volume of ≤10cm×8cm×5cm (only 1 / 6 of that of a laboratory spectrometer) and a cost of ≤800 yuan (only 1 / 6 of that of laboratory equipment), making it suitable for ordinary indoor scenarios. Attached Figure Description

[0045] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and, together with their descriptions, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0046] Figure 1 This is a schematic diagram of the structure of a light detection device provided in an embodiment of the present invention. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0048] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0049] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, article, or apparatus that includes that element.

[0050] This invention provides a light detection device, such as... Figure 1 As shown, the device includes a light detection optical path, a controller, a housing, and a remote control unit;

[0051] The light detection optical path includes two parallel first detection optical paths and a second detection optical path, which are used to calculate the color rendering index in real time through spectral imaging and multi-band analysis algorithms, and also to directly quantify the ambient light intensity through the illuminance sensing chip.

[0052] The box body is provided with two independent light-shielding cavities, which respectively accommodate the first detection optical path and the second detection optical path. The inner walls of the independent light-shielding cavities are blackened, the cavity spacing is ≥5mm and they are isolated by light-shielding partitions.

[0053] The controller is connected to the first detection optical path and the second detection optical path respectively, and is used to generate the current light detection result based on the color rendering index and ambient light intensity; and dynamically adjust the color temperature compensation coefficient and brightness compensation coefficient based on a preset target value to generate adjustment parameters;

[0054] The remote control unit is connected to the controller and is used to generate a linkage signal based on the adjustment parameters and send it to the lamp to adjust the color temperature and brightness of the lamp.

[0055] This invention employs parallel dual-optical-path frequency division technology. The first optical path (monochromatic glass → specular reflection → camera) calculates the color rendering index (Ra, R9, Rf, Rg) in real time through spectral imaging and multi-band analysis algorithms. The second optical path (monochromatic glass → illuminance sensor chip) directly quantifies the ambient light intensity (unit: lux), achieving synchronous measurement of color rendering index (Ra / R9 / Rf / Rg) and ambient light intensity (lux), reducing the detection time to within 0.5 seconds.

[0056] This invention achieves for the first time the simultaneous detection of color rendering index (Ra / R9 / Rf / Rg) and ambient light intensity, with a color rendering index error ≤1.2 (traditional RGB sensor error ≥5) and an intensity error ≤3% (traditional integrated equipment error ≥10%).

[0057] This invention reduces the detection time to 0.5 seconds (compared to ≥2 seconds for traditional serial detection) through a dual-optical-path parallel design and algorithm optimization, thus solving the problem of dynamic adjustment lag.

[0058] The box of this invention has a volume of ≤10cm×8cm×5cm (only 1 / 6 of that of a laboratory spectrometer) and a cost of ≤800 yuan (only 1 / 6 of that of laboratory equipment), making it suitable for ordinary indoor scenarios.

[0059] Specifically, the first detection optical path is used to calculate the color rendering index in real time through spectral imaging and multi-band analysis algorithms; the second detection optical path is used to directly quantify the ambient light intensity through an illuminance sensing chip.

[0060] The first detection optical path includes:

[0061] The first homogenizing glass is located at the entrance of the optical path and is used to homogenize ambient light and eliminate local strong light interference.

[0062] A mirrored glass is disposed on the reflected light path of the first light-diffusing glass to receive uniform light signals from the first light-diffusing glass and guide the light signals to the camera through a reflection mechanism; the incident angle of the mirrored glass is fixed at 45°.

[0063] The camera is located at the end of the reflected light path of the mirrored glass, used to receive light signals reflected by the mirrored glass; it is also used to capture spectral images and analyze spectral data and calculate color rendering index through built-in algorithms.

[0064] The first uniform light glass is made of 3mm thick frosted quartz glass with a haze value of 90±2%, ensuring that the uniformity of incident light is >95%.

[0065] The mirror glass used is silver-plated mirror glass (reflectivity ≥98%), and the incident angle is fixed at 45° to eliminate polarization effect.

[0066] The camera is equipped with an IMX335 CMOS sensor and a narrow-band filter array (10nm bandwidth) to capture spectral images and analyze spectral data and calculate color rendering index through a built-in multi-band analysis algorithm.

[0067] The multi-band analysis algorithm includes the following steps:

[0068] S1. Acquire spectral images in the 400-700nm band based on a narrowband filter array, and divide them into 6 continuous sub-bands: 400-450nm, 450-500nm, 500-550nm, 550-600nm, 600-650nm, and 650-700nm.

[0069] S2. Integrate the gray values ​​of each sub-band image to calculate the spectral power distribution;

[0070] S3. Based on the spectral power distribution and the CIE1931 standard colorimetric system, calculate the tristimulus values ​​(X, Y, Z) and color rendering indices (Ra, R9, Rf, Rg).

[0071] The second detection optical path includes: a second light-averaging glass located at the entrance of the optical path, used to homogenize ambient light and eliminate directional deviation of light;

[0072] An illuminance sensor chip is disposed in the transmission light path of the second homogenizing glass and is used to output the ambient light intensity value.

[0073] The second uniform light glass is made of 3mm thick frosted quartz glass with a haze value of 90±2%, ensuring that the uniformity of incident light is >95%.

[0074] The illuminance chip used is the TSL2591 high dynamic range sensor (0.003-88,000 lux).

[0075] The remote control unit is connected to the controller and is used to generate a linkage signal according to the adjustment parameters and send it to the lamp to adjust the color temperature and brightness of the lamp.

[0076] The controller is specifically used to compare the color rendering index and ambient light intensity with preset target values; and dynamically adjust the color temperature compensation coefficient and brightness compensation coefficient according to the comparison results to generate the adjustment parameters.

[0077] Specifically, this is used in the controller to compare the color rendering index (Ra) with a preset target value. If Ra < the lower limit of the preset target value, the color temperature compensation coefficient ΔT = 0.02 × (target value - Ra) is increased. The ambient light intensity (L) is compared with a preset target value. If L < the lower limit of the target value, the brightness compensation coefficient ΔB = 0.05 × (target value - L) is increased. The adjustment parameters are ΔT and ΔB, where ΔT ranges from 0 to 1.5 and ΔB ranges from 0 to 10.

[0078] This invention also provides a method for adjusting lighting, the method being:

[0079] S1. Obtain the color rendering index (Ra, R9, Rf, Rg) of ambient light through a multi-band analysis algorithm of the first detection optical path;

[0080] S2. Obtain the ambient light intensity value (L) through the illuminance sensor chip in the second detection optical path;

[0081] S3. The controller compares the color rendering index and intensity value with the preset target value to generate the current light detection result;

[0082] S4. The controller dynamically adjusts the color temperature compensation coefficient (ΔT) and brightness compensation coefficient (ΔB) based on the detection results, and generates adjustment parameters;

[0083] S5. The remote control unit generates a linkage signal based on the adjustment parameters and sends it to the lamp to adjust the color temperature and brightness of the lamp to the target range.

[0084] Furthermore, the method also includes

[0085] Determine the adjustment parameters based on the target setting and current light detection results;

[0086] A linkage signal is generated based on the adjustment parameters and sent to the lamps to adjust the color temperature and brightness of the lamps.

[0087] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A light detection device, characterized in that, The device includes a light detection optical path, a controller, a housing, and a remote control unit; The light detection optical path includes two parallel first detection optical paths and a second detection optical path, which are used to calculate the color rendering index in real time through spectral imaging and multi-band analysis algorithms, and also to directly quantify the ambient light intensity through the illuminance sensing chip. The box body is provided with two independent light-shielding cavities, which respectively accommodate the first detection optical path and the second detection optical path. The inner walls of the independent light-shielding cavities are blackened, the cavity spacing is ≥5mm and they are isolated by light-shielding partitions. The controller is connected to the first detection optical path and the second detection optical path respectively, and is used to generate the current light detection result based on the color rendering index and the ambient light intensity. It dynamically adjusts the color temperature compensation coefficient and brightness compensation coefficient based on preset target values ​​to generate adjustment parameters; The remote control unit is connected to the controller and is used to generate a linkage signal based on the adjustment parameters and send it to the lamp to adjust the color temperature and brightness of the lamp.

2. The light detection device according to claim 1, characterized in that, The first detection optical path is used to calculate the color rendering index in real time through spectral imaging and multi-band analysis algorithms; the second detection optical path is used to directly quantify the ambient light intensity through an illuminance sensing chip.

3. The light detection device according to claim 1 or 2, characterized in that, The first detection optical path includes: The first homogenizing glass is located at the entrance of the light path and is used to homogenize the ambient light; A mirrored glass is disposed on the reflected light path of the first light-diffusing glass to receive uniform light signals from the first light-diffusing glass and guide the light signals to the camera through a reflection mechanism; the incident angle of the mirrored glass is fixed at 45°. The camera is located at the end of the reflected light path of the mirrored glass, used to receive light signals reflected by the mirrored glass; it is also used to capture spectral images and analyze spectral data and calculate color rendering index through built-in algorithms.

4. The light detection device according to claim 3, characterized in that, The camera, located at the end of the reflected light path of the mirrored glass, is equipped with an IMX335 CMOS sensor and a narrowband filter array. It is used to capture spectral images and analyze the spectral data and calculate the color rendering index using a built-in multi-band analysis algorithm. The multi-band analysis algorithm includes the following steps: S1. Acquire spectral images in the 400-700nm band based on a narrowband filter array, and divide them into 6 continuous sub-bands: 400-450nm, 450-500nm, 500-550nm, 550-600nm, 600-650nm, and 650-700nm. S2. Integrate the gray values ​​of each sub-band image to calculate the spectral power distribution; S3. Based on the spectral power distribution and the CIE1931 standard colorimetric system, calculate the tristimulus values ​​(X, Y, Z) and color rendering indices (Ra, R9, Rf, Rg).

5. The light detection optical path for indoor illumination detection according to claim 4, characterized in that, The second detection optical path includes: The second light-diffusing glass is located at the entrance of the light path and is used to homogenize ambient light and eliminate directional deviations in light. An illuminance sensor chip is disposed in the transmission light path of the second homogenizing glass and is used to output the ambient light intensity value.

6. The light detection device according to claim 5, characterized in that, It also includes a remote control unit, The controller is also used to determine adjustment parameters based on the target setting and the current light detection results; The controller is specifically used to compare the color rendering index (Ra) with a preset target value. If Ra < the lower limit of the preset target value, the color temperature compensation coefficient ΔT = 0.02 × (target value - Ra) is increased. The controller also compares the ambient light intensity (L) with a preset target value. If L < the lower limit of the target value, the brightness compensation coefficient ΔB = 0.05 × (target value - L) is increased. The adjustment parameters are ΔT and ΔB, where ΔT ranges from 0 to 1.5 and ΔB ranges from 0 to 10. The remote control unit is connected to the controller and is used to generate a linkage signal according to the adjustment parameters and send it to the lamp to adjust the color temperature and brightness of the lamp.

7. The light detection device according to claim 6, characterized in that, The controller is specifically used to compare the color rendering index and ambient light intensity with preset target values; and dynamically adjust the color temperature compensation coefficient and brightness compensation coefficient according to the comparison results to generate the adjustment parameters.

8. A method for adjusting light based on the device according to any one of claims 1-7, characterized in that, The method is as follows: S1. Obtain the color rendering index (Ra, R9, Rf, Rg) of ambient light through a multi-band analysis algorithm of the first detection optical path; S2. Obtain the ambient light intensity value (L) through the illuminance sensor chip in the second detection optical path; S3. The controller compares the color rendering index and intensity value with the preset target value to generate the current light detection result; S4. The controller dynamically adjusts the color temperature compensation coefficient (ΔT) and brightness compensation coefficient (ΔB) based on the detection results, and generates adjustment parameters; S5. The remote control unit generates a linkage signal based on the adjustment parameters and sends it to the lamp to adjust the color temperature and brightness of the lamp to the target range.

9. The light adjustment method according to claim 8, characterized in that, The method also includes Determine the adjustment parameters based on the target setting and current light detection results; A linkage signal is generated based on the adjustment parameters and sent to the lamps to adjust the color temperature and brightness of the lamps.

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