WO2022262000A1 - Method and apparatus for evaluating indoor space brightness, device, and readable storage medium - Google Patents

Abstract

Disclosed is a method for evaluating indoor space brightness, comprising: obtaining spatial parameters of an indoor space, the spatial parameters comprising physical space information, reflection information, glare information, and vertical illuminance at the eye; calculating indirect light illuminance at the eye according to the spatial parameters, wherein the indirect light illuminance at the eye refers to the illuminance of reflected light entering the eyes in the vertical illuminance at the eye; and generating an evaluation result of the indoor space brightness according to the indirect light illuminance at the eye. Also disclosed are an apparatus for evaluating the indoor space brightness, a computer device, and a computer-readable storage medium. According to the present invention, a key indicator, i.e., the "indirect light illuminance at the eye", for evaluating the indoor space brightness can be accurately calculated according to the spatial parameters, without increasing the field test cost and workload, providing an important support for the improvement of indoor space illumination quality in the future.

Description

Method, device, equipment and readable storage medium for evaluating brightness of indoor space technical field

The present invention relates to the field of lighting technology, in particular to a method for evaluating the sense of brightness in an indoor space, a device for evaluating the sense of brightness in an indoor space, computer equipment, and a computer-readable storage medium.

Background technique

With the advancement of technology and the transformation of working methods, people's visual work has expanded from the horizontal direction of traditional paper office to the vertical direction of self-luminous screens such as computers. People are increasingly pursuing a higher quality and healthy light environment experience, among which the brightness of the overall space (space brightness) is one of the most important factors. However, the existing lighting design focuses on the horizontal illuminance as the main parameter index for evaluating the lighting environment, but blindly increasing the horizontal illuminance has a limited effect on improving the overall brightness of the space and is not conducive to energy saving. The contrast is stronger, causing problems such as glare and visual fatigue. Therefore, it is difficult to accurately evaluate the spatial brightness with horizontal illuminance.

The brightness of the space is closely related to the light stimulus obtained by the human eye, and the corneal illuminance is the main evaluation index. Compared with looking directly at the light source, the indirect light produced by the diffuse reflection of various surfaces in the room contributes more to the eye illuminance. The indirect light eye illuminance is an important indicator for evaluating the "sense of brightness in the space". However, in actual measurement, it is difficult to distinguish the contribution ratio of direct light and indirect light, which limits the application of this indicator to a certain extent, and it is urgent to promote the innovation of related technologies to realize the measurement of indirect light eye illuminance.

Although the current indoor lighting focuses on the horizontal illuminance and ignores the brightness of the space, the article Towards the third stage of the lighting profession (Lighting Research and Technology 2010; 42:73-93.) written by C.Cuttle et al. proposed a method based on Visual requirements propose an evaluation index for the brightness of indoor spaces——MRSE (Mean Room Surface Exitance, unit lm/m ² ). Acceptance is not high.

To sum up, the existing technology cannot satisfy the research, design and application of indoor lighting that is oriented to the needs of visual health and focuses on the spatial brightness, which hinders the application of healthy lighting in the field of lighting to a certain extent.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method for evaluating the brightness of indoor space, an evaluation device for brightness of indoor space, computer equipment and a computer-readable storage medium, which can accurately calculate the indirect photoreceptor area through the space state parameters. Illuminance, so as to effectively evaluate the brightness of the indoor space.

In order to solve the above technical problems, the present invention provides a method for evaluating the brightness of an indoor space, which includes: obtaining the spatial state parameters of the indoor space, and the spatial state parameters include physical space information, reflection information, glare information and vertical illuminance of the eyes ; Calculate the illuminance of the indirect light eye according to the space state parameters, wherein the illuminance of the indirect light eye refers to the illuminance at which the reflected light enters the eye in the vertical illuminance of the eye; generate a bright indoor space according to the illuminance of the indirect light eye Feeling evaluation results.

As an improvement of the above solution, the step of calculating the illuminance of the indirect eye according to the spatial state parameters includes: calculating the illuminance of the direct eye according to the physical space information, reflection information and glare information, wherein the illuminance of the direct eye is Refers to the illuminance of direct light entering the eye in the vertical illuminance of the eye; according to the vertical illuminance of the eye and the illuminance of the eye of direct light, calculate the illuminance of the eye of indirect light.

As an improvement of the above solution, the step of calculating the direct eye illuminance according to the physical space information, reflection information and glare information includes: calculating space reference parameters according to the physical space information and reflection information, wherein the physical space The information includes the installation height of the lamp and the floor height of the room, and the reflection information includes the wall reflection coefficient and intercept; according to the space reference parameters, intercept, glare information and eye vertical illuminance, the direct light eye illuminance is calculated, wherein, The glare information includes a reference glare value and a downlight glare value, and the downlight glare value refers to a glare value when a lamp is illuminated in a downlight mode.

As an improvement of the above scheme, the step of calculating the spatial reference parameters according to the physical spatial information and reflection information includes: according to the formula

Calculate the space reference parameter a, where k ₁ , k ₂ , and k ₃ are constants, H _light is the installation height of the lamp, H _room is the room floor height, ρ is the wall reflection coefficient, and b is the intercept.

As an improvement of the above scheme, the step of calculating the direct light eye illuminance according to the spatial reference parameters, intercept, glare information and eye vertical illuminance includes: according to the formula

Calculate the direct eye illuminance E _cor,direct , where E _cor is the vertical eye illuminance, UGR is the reference glare value, UGR _max is the downlight glare value, a is the spatial reference parameter, and b is the intercept.

As an improvement of the above scheme, the step of calculating the indirect photoreceptor illuminance according to the vertical illuminance of the eye and the direct photoreceptor part includes: calculating the indirect photoreceptor part according to the formula E _cor,indirect =E _cor -E _cor,direct Illuminance E _cor,indirect , wherein, E _cor is the vertical illuminance of the eye, and E _cor,direct is the illuminance of the eye with direct light.

As an improvement to the above solution, the method for obtaining the intercept includes: searching for a preset mapping relationship according to the wall reflection coefficient to obtain the corresponding intercept, and the preset mapping relationship is used to record the wall reflection Correspondence between coefficients and intercepts.

Correspondingly, the present invention also provides a device for evaluating the brightness of an indoor space, including: an acquisition module for acquiring space state parameters of the indoor space, the space state parameters including physical space information, reflection information, glare information and eye Department vertical illuminance; calculation module, used to calculate indirect light eye department illuminance according to the space state parameters, wherein, said indirect light eye department illuminance refers to the illuminance at which reflected light enters the eye in the eye vertical illuminance; evaluation module, with The evaluation result of the brightness of the indoor space is generated according to the illuminance of the indirect light eye.

As an improvement to the above solution, the calculation module includes: a direct luminance unit for calculating the direct illuminance according to physical space information, reflection information and glare information, wherein the direct illuminance refers to In the vertical illuminance of the eye, the illuminance of direct light entering the eye; the indirect eye illuminance unit is used to calculate the indirect eye illuminance according to the vertical illuminance of the eye and the direct illuminance of the eye.

As an improvement of the above solution, the direct light eye illuminance unit includes: a first calculation subunit, configured to calculate a space reference parameter according to the physical space information and reflection information, wherein the physical space information includes the installation height of the lamp and room floor height, the reflection information includes wall reflection coefficient and intercept; the second calculation subunit is used to calculate the direct light eye illuminance according to the space reference parameters, intercept, glare information and eye vertical illuminance , wherein the glare information includes a reference glare value and a downlight glare value, and the downlight glare value refers to a glare value when a lamp is illuminated in a downlight mode.

Correspondingly, the present invention also provides a computer device, including a memory and a processor, the memory stores a computer program, and when the processor executes the computer program, the steps of the method for evaluating the sense of brightness in an indoor space are realized.

Correspondingly, the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method for evaluating the sense of brightness in an indoor space are realized.

Implement the present invention, have following beneficial effect:

The present invention creatively proposes a key index for evaluating the brightness of indoor space——"indirect optical eye illuminance". Provide important support for the improvement of the lighting quality of indoor spaces in the future;

At the same time, the present invention obtains relevant spatial state parameters such as physical space information, reflection information, glare information, and eye vertical illuminance, and calculates the corresponding The illuminance value of the indirect light eye, high accuracy, easy to operate.

Description of drawings

Fig. 1 is the flow chart of the first embodiment of the method for evaluating the sense of brightness in indoor spaces of the present invention;

Fig. 2 is the flow chart of the second embodiment of the method for evaluating the sense of brightness in indoor spaces of the present invention;

Fig. 3 is the schematic diagram of indoor space among the present invention;

Fig. 4 is a structural schematic diagram of an evaluation device for the brightness of indoor space of the present invention;

Fig. 5 is a schematic structural diagram of a calculation module in the device for evaluating brightness of indoor space according to the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

Referring to Fig. 1, Fig. 1 has shown the flow chart of the first embodiment of the evaluation method of indoor space brightness feeling of the present invention, and it comprises:

S101. Acquire space state parameters of an indoor space.

Spatial state parameters include physical space information, reflection information, glare information, and eye vertical illuminance. Among them, physical space information is used to represent the physical space data related to light in the indoor space, and reflection information is used to represent the physical space data related to light reflection in the indoor space. The glare information is used to characterize the glare value of the indoor space. The vertical illuminance refers to the illuminance on the vertical plane, while the corneal illuminance refers to the horizontal illuminance of the eyes when the human body is in a normal sitting posture. received light intensity.

S102. Calculate the illuminance of the indirect light eye according to the space state parameter.

The vertical illuminance of the eye includes the direct illuminance of the eye and the illuminance of the indirect eye; among them, the direct illuminance of the eye refers to the part of the vertical illuminance of the eye where the light directly emitted by the lamp enters the human eye, that is, the vertical illuminance of the eye The illuminance of direct light entering the eye; the indirect illuminance of the eye refers to the part of the vertical illuminance of the eye that is reflected by the desktop, wall, and ceiling lamp and enters the human eye, that is, the illuminance of the reflected light entering the eye in the vertical illuminance of the eye; That is to say, eye vertical illuminance = direct eye illuminance + indirect eye illuminance.

Specifically, the step of calculating the illuminance of the indirect light eye according to the space state parameters includes:

(1) According to the physical space information, reflection information and glare information, calculate the direct light eye illuminance, wherein the direct light eye illuminance refers to the illuminance of the direct light entering the eye in the eye vertical illuminance.

It should be noted that the indirect eye illuminance refers to the part of the vertical illuminance of the eye that is reflected by the desktop, wall, and ceiling lights and enters the human eye. That is to say, the physical space information and reflection information are the influencing factors of the indirect eye illuminance, and the glare information is the factor reflecting the result of the indirect eye illuminance, so the indirect eye illuminance can be accurately calculated through the influencing factors and result factors .

(2) According to the vertical illuminance of the eye and the illuminance of the direct eye, calculate the illuminance of the indirect eye.

It should be noted that the vertical illuminance of the eye = the direct illuminance of the eye + the illuminance of the indirect eye.

Therefore, according to the space state parameters, the illuminance of the indirect light eye can be calculated according to the actual situation of the indoor space.

S103. Generate an evaluation result of the brightness of the indoor space according to the illuminance of the indirect light eye.

The illuminance of the indirect light eye can effectively reflect the brightness of the indoor space. In actual operation, it can be judged according to the following table:

Indirect light eye illuminance (lx)	Evaluation results
10	dark
30	dark
100	acceptable
300	bright
1000	too bright

It can be seen from the above table that when the illuminance of the indirect light eye is less than 100lx, the sense of brightness of the indoor space is poor; when the illuminance of the indirect light eye is between 100-300lx, the sense of brightness of the indoor space is better; At 300lx, the indoor space is too bright. Therefore, through the calculation of the illuminance of the indirect light eye, it is possible to efficiently evaluate the brightness of the indoor space and provide a basis for adjusting the light of the indoor space.

For example, when it is judged that the brightness of the indoor space is poor through the indirect light eye illuminance, the brightness of the indoor space can be improved by adding lamps; In this case, the brightness of the indoor space can be reduced by reducing the number of lamps.

It should be noted that there is no definition of spatial brightness in the existing standards, and the present invention creatively proposes a key indicator for evaluating the brightness of indoor spaces—“indirect light eye illuminance”. The present invention can obtain the corresponding indirect optical eye illuminance value without increasing the on-site test cost and workload, and its scientificity, convenience and practicality make this index have a higher acceptable value At the same time, it will also provide important support for the improvement of the lighting quality of indoor spaces in the future. Preferably, the invention is applicable to classroom spaces.

Referring to Fig. 2, Fig. 2 shows the flow chart of the second embodiment of the method for evaluating the brightness of indoor space of the present invention, which includes:

S201. Acquire space state parameters of an indoor space.

As shown in Figure 3, the spatial state parameters include physical space information, reflection information, glare information and eye vertical illuminance, specifically:

The physical space information includes the installation height of the lamps and the room floor height.

Glare information includes reference glare value and downlight glare value. Among them, the measuring point of the benchmark glare value is the midpoint of the indoor rear wall, and the benchmark glare value is consistent with the requirements in the general indoor lighting standards. During the measurement, it is necessary to keep the room without external light interference, and the indoor lamps are fully powered; The value refers to the glare value measured when all the lamps in the indoor space are illuminated by the downlight method.

The vertical illuminance of the eye refers to the light intensity received by the eye in the horizontal direction when the human body is in a normal sitting posture. When measuring the vertical illuminance of the eyes, refer to Figure 3 for the measurement points. The height of the measurement is 1.2m in the sitting position, and the line of sight is horizontally facing the writing board (that is, perpendicular to the writing board).

The reflectance information includes the wall reflectance (ie, the average reflectance of the wall) and the intercept. When measuring the reflectance of the wall, the same light can be used to hit the sample and the wall respectively, and then the reflectance of the wall can be calculated through the reflectance of the sample; the value of the intercept is related to the reflectance of the wall. Specifically, the method for obtaining the intercept is: searching for a preset mapping relationship according to the wall reflection coefficient to obtain the corresponding intercept, and the preset mapping relationship is used to record the corresponding relationship between the wall reflection coefficient and the intercept. Among them, the preset mapping relationship can be recorded in a form or a graph. For example, when a form is used, the preset form is as follows:

wall reflection coefficient	intercept
0.6	-0.03
0.7	-0.06
0.8	-0.08
0.9	-0.10

From the above preset mapping relationship, it can be seen that the larger the wall reflection coefficient, the smaller the intercept.

S202. Calculate a space reference parameter according to the physical space information and the reflection information.

It should be noted that different indoor spaces have different physical space information and reflection information, and different physical space information and reflection information will lead to different indoor space reflection states. Therefore, through targeted processing of physical spatial information and reflection information, spatial reference parameters can be obtained. Among them, the physical space information includes the installation height of the lamp and the floor height of the room, and the reflection information includes the wall reflection coefficient and intercept.

Specifically, according to the formula

Compute the spatial datum parameter a, where:

The spatial reference parameter a is used to represent the ratio of the reference glare value (that is, the ratio of the reference glare value to the glare value of the downlight) and the ratio of the direct light eye illuminance (that is, the ratio of the direct light eye illuminance to the eye vertical illuminance). ratio) can be calculated through the installation height of the lamp and the reflection coefficient of the wall;

k ₁ , k ₂ , and k ₃ are constants. It should be noted that the values of k ₁ , k ₂ , and k ₃ are all between -10 and 10, but this is not a limitation and can be set according to the actual situation , preferably, the values of k ₁ , k ₂ , and k ₃ can be between -5 and 5, so as to further improve the accuracy;

H _light is the installation height of the lamp;

H _room is the floor height of the room;

ρ is the wall reflection coefficient;

b is the intercept, which is used to indicate the correction value between the proportion of the benchmark glare value and the proportion of the direct light eye illuminance, which can be set according to the actual situation.

Therefore, through the installation height ratio of the lamps (ie

), the wall reflection coefficient and the intercept can be used to calculate the spatial reference parameters.

S203. Calculate direct light eye illuminance according to the spatial reference parameter, intercept, glare information, and eye vertical illuminance.

It should be noted that the direct light eye illuminance refers to the part of the vertical illuminance of the eye where the light directly emitted by the lamp enters the human eye, that is, the illuminance of the direct light entering the eye in the vertical illuminance of the eye. Therefore, the direct light eye illuminance can be separated from the eye vertical illuminance through spatial reference parameters, intercept, glare information, and eye vertical illuminance. Wherein, the glare information includes a reference glare value and a downlight glare value.

Specifically, according to the formula

Calculate the direct eye illuminance E _cor,direct , where E _cor is the vertical eye illuminance, UGR is the reference glare value, UGR _max is the downlight glare value, a is the spatial reference parameter, and b is the intercept.

Therefore, through the reference glare value ratio

The direct light eye illuminance can be calculated from the spatial reference parameters, intercept and eye vertical illuminance.

S204. Calculate the indirect eye illuminance according to the vertical eye illuminance and the direct eye illuminance.

Since the vertical eye illuminance is the sum of the direct eye illuminance and the indirect eye illuminance, the indirect eye illuminance E _cor,indirect can be calculated according to the formula E _cor,indirect =E _cor -E _cor,direct , where , E _cor is the vertical illuminance of the eye, and E _cor,direct is the illuminance of the eye with direct light.

S205. Generate an evaluation result of the brightness of the indoor space according to the illuminance of the indirect light eye.

It can be seen from the above that the present invention obtains related space state parameters such as the installation height of the lamps and lanterns in the indoor space, the floor height of the room, the reference glare value, the glare value of the downlight, the vertical illuminance of the eyes, the wall reflection coefficient and the intercept, and through The specific calculation method accurately calculates the key index used to evaluate the brightness of the indoor space - "indirect light eye illuminance", which provides important support for the improvement of the lighting quality of the indoor space in the future, and has strong practicability.

Referring to Fig. 4, Fig. 4 shows the specific structure of the evaluation device 100 for the brightness of the indoor space of the present invention, which includes an acquisition module 1, a calculation module 2 and an evaluation module 3, specifically:

The acquisition module 1 is used to acquire the space state parameters of the indoor space. Spatial state parameters include physical space information, reflection information, glare information, and eye vertical illuminance; among them, the physical space information is used to represent the physical space data related to light in the indoor space, and the reflection information is used to represent the physical space data related to light reflection in the indoor space. The glare information is used to represent the glare value of the indoor space. The vertical illuminance refers to the illuminance on the vertical plane, and the vertical illuminance of the eyes refers to the light received by the eyes in the horizontal direction when the human body is in a normal sitting posture. light intensity.

The calculation module 2 is used to calculate the indirect light eye illuminance according to the space state parameters. It should be noted that the vertical illuminance of the eye includes the direct illuminance of the eye and the illuminance of the indirect eye; where the direct illuminance of the eye refers to the part of the vertical illuminance of the eye where the light directly emitted by the lamp enters the human eye, that is, The illuminance of direct light entering the eye in the vertical illuminance of the eye; the indirect illuminance of the eye refers to the part of the vertical illuminance of the eye that is reflected by the desktop, wall, and ceiling lamp and enters the human eye, that is, the reflected light enters the human eye in the vertical illuminance of the eye. The illuminance of the eye; that is to say, the vertical illuminance of the eye = the direct illuminance of the eye + the illuminance of the indirect eye. Therefore, according to the space state parameters, the illuminance of the indirect light eye can be calculated according to the actual situation of the indoor space.

The evaluation module 3 is used to generate the evaluation result of the brightness of the indoor space according to the illuminance of the indirect light eye.

The illuminance of the indirect light eye can effectively reflect the brightness of the indoor space. In actual operation, it can be judged according to the following table:

Indirect light eye illuminance (lx)	Evaluation results
10	dark

30	dark
100	acceptable
300	bright
1000	too bright

It can be seen from the above table that when the illuminance of the indirect light eye is less than 100lx, the sense of brightness of the indoor space is poor; when the illuminance of the indirect light eye is between 100-300lx, the sense of brightness of the indoor space is better; At 300lx, the indoor space is too bright. Therefore, through the calculation of the illuminance of the indirect light eye, it is possible to efficiently evaluate the brightness of the indoor space and provide a basis for adjusting the light of the indoor space.

Therefore, through the present invention, the corresponding indirect light eye illuminance value can be obtained without increasing the cost and workload of the on-site test, and it will also provide important support for the improvement of the lighting quality of the indoor space in the future.

As shown in Fig. 5, the calculation module 2 includes a direct light eye portion illuminance unit 21 and an indirect light eye portion illuminance unit 22, specifically:

The direct eye illuminance unit 21 is configured to calculate the direct eye illuminance according to physical space information, reflection information and glare information. Wherein, the direct light eye illuminance refers to the illuminance at which direct light enters the eye in the vertical illuminance of the eye.

The indirect eye illuminance unit 22 is configured to calculate the indirect eye illuminance according to the vertical eye illuminance and the direct eye illuminance.

Further, the direct eye illuminance unit 21 includes a first calculation subunit 211 and a second calculation subunit 212 .

The first calculation subunit 211 is configured to calculate the spatial reference parameter according to the physical space information and the reflection information. Among them, the physical space information includes the installation height of the lamp and the floor height of the room, and the reflection information includes the wall reflection coefficient (ie, the average wall reflectance) and the intercept. When measuring the reflectance of the wall, the same light can be used to hit the sample and the wall respectively, and then the reflectance of the wall can be calculated through the reflectance of the sample; the value of the intercept is related to the reflectance of the wall, and the intercept The specific acquisition method is: searching for a preset mapping relationship according to the wall reflection coefficient to obtain the corresponding intercept, and the preset mapping relationship is used to record the corresponding relationship between the wall reflection coefficient and the intercept. Among them, the preset mapping relationship can be recorded in a form or a graph. For example, when using a form, the preset form is as follows:

wall reflection coefficient	intercept
0.6	-0.03
0.7	-0.06

0.8	-0.08
0.9	-0.10

From the above preset mapping relationship, it can be seen that the larger the wall reflection coefficient, the smaller the intercept.

Specifically, according to the formula

Calculate the space reference parameter a, where k ₁ , k ₂ , and k ₃ are constants, H _light is the installation height of the lamp, H _room is the room floor height, ρ is the wall reflection coefficient, and b is the intercept.

The second calculation subunit 212 is used to calculate the direct illuminance of the eye according to the spatial reference parameters, the intercept, the glare information and the vertical illuminance of the eye. Among them, the vertical illuminance of the eye refers to the light intensity received by the eye in the horizontal direction when the human body is in a normal sitting posture; when measuring the vertical illuminance of the eye, the measurement point is shown in Figure 3, and the measurement height is 1.2m in the sitting position, and the line of sight is Facing the writing board horizontally (that is, perpendicular to the writing board), then use the illuminance meter to measure, and finally take the average value of the measurement. At the same time, the glare information includes the reference glare value and the glare value of the downlight. The measuring point of the reference glare value is the midpoint of the indoor rear wall. The reference glare value is consistent with the requirements of the general indoor lighting standards. The measurement must be carried out without interference from the outside light. , the indoor lamps are fully turned on at full power; and the glare value of the downlight refers to the glare value measured when all the lamps in the indoor space are illuminated by the downlight mode. Refers to the glare value when the lamp is illuminated by the downlight method.

Specifically, according to the formula

Calculate the direct eye illuminance E _cor,direct , where E _cor is the vertical eye illuminance, UGR is the reference glare value, UGR _max is the downlight glare value, a is the spatial reference parameter, and b is the intercept.

Correspondingly, the indirect eye illuminance unit 22 calculates the indirect eye illuminance E _cor,indirect according to the formula E _cor,indirect =E _cor -E _cor,direct , where E _cor is the vertical eye illuminance, E _cor,direct Is the direct light eye illuminance.

It can be seen from the above that the present invention obtains related space state parameters such as the installation height of the lamps and lanterns in the indoor space, the floor height of the room, the reference glare value, the glare value of the downlight, the vertical illuminance of the eyes, the wall reflection coefficient and the intercept, and through The specific calculation method accurately calculates the key index used to evaluate the brightness of the indoor space - "indirect light eye illuminance", which provides important support for the improvement of the lighting quality of the indoor space in the future, and has strong practicability.

Correspondingly, the present invention also provides a computer device, including a memory and a processor, the memory stores a computer program, and when the processor executes the computer program, the steps of the method for evaluating the sense of brightness in an indoor space are realized. At the same time, the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method for evaluating the sense of brightness in an indoor space are realized.

The above description is a preferred embodiment of the present invention, and it should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also considered Be the protection scope of the present invention.

Claims (12)

1. A method for evaluating the sense of brightness in an indoor space, comprising:

   Acquiring space state parameters of indoor space, said space state parameters including physical space information, reflection information, glare information and eye vertical illuminance;

   Calculate the illuminance of the indirect light eye according to the space state parameters, wherein the indirect light eye illuminance refers to the illuminance at which reflected light enters the eye in the vertical illuminance of the eye;

   An evaluation result of the brightness of the indoor space is generated according to the illuminance of the indirect light eye.
2. The method for evaluating the sense of brightness in an indoor space according to claim 1, wherein the step of calculating the illuminance of the indirect light eye according to the space state parameters comprises:

   According to the physical space information, reflection information and glare information, calculate the direct light eye illuminance, wherein the direct light eye illuminance refers to the illuminance of direct light entering the eye in the vertical illuminance of the eye;

   According to the vertical illuminance of the eye and the illuminance of the direct eye, the illuminance of the indirect eye is calculated.
3. The method for evaluating the brightness of indoor space according to claim 2, wherein the step of calculating the illuminance of direct light eyes according to the physical space information, reflection information and glare information comprises:

   Calculate space reference parameters according to the physical space information and reflection information, wherein the physical space information includes the installation height of the lamp and the floor height of the room, and the reflection information includes wall reflection coefficient and intercept;

   According to the spatial reference parameters, intercept, glare information and eye vertical illuminance, the direct eye illuminance is calculated, wherein the glare information includes a reference glare value and a downlight glare value, and the downlight glare value refers to the The glare value for downlight lighting.
4. The method for evaluating the sense of brightness in an indoor space according to claim 3, wherein the step of calculating space reference parameters according to physical space information and reflection information comprises:

   According to the formula

   

   Calculate the space reference parameter a, where k ₁ , k ₂ , and k ₃ are constants, H _light is the installation height of the lamp, H _room is the room floor height, ρ is the wall reflection coefficient, and b is the intercept.
5. The method for evaluating the brightness of indoor space according to claim 3, wherein the step of calculating the direct eye illuminance according to the space reference parameters, intercept, glare information and eye vertical illuminance comprises:

   According to the formula

   

   Calculate the direct eye illuminance E _cor,direct , where E _cor is the vertical eye illuminance, UGR is the reference glare value, UGR _max is the downlight glare value, a is the spatial reference parameter, and b is the intercept.
6. The method for evaluating the brightness of an indoor space according to claim 3, wherein the step of calculating the indirect eye illuminance according to the eye vertical illuminance and the direct eye illuminance includes:

   According to the formula E _cor,indirect =E _cor -E _cor,direct , calculate the indirect eye illuminance E _cor,indirect , where E _cor is the vertical eye illuminance, and E _cor,direct is the direct eye illuminance.
7. The method for evaluating the brightness of an indoor space according to claim 3, wherein the method for obtaining the intercept comprises: searching for a preset mapping relationship according to the wall reflection coefficient to obtain the corresponding intercept, the The preset mapping relationship is used to record the corresponding relationship between the wall reflection coefficient and the intercept.
8. A device for evaluating the brightness of an indoor space, characterized in that it includes:

   An acquisition module, configured to acquire spatial state parameters of the indoor space, where the spatial state parameters include physical space information, reflection information, glare information, and eye vertical illuminance;

   A calculation module, configured to calculate the indirect eye illuminance according to the space state parameters, wherein the indirect eye illuminance refers to the illuminance at which reflected light enters the eye in the vertical illuminance of the eye;

   An evaluation module, configured to generate an evaluation result of the brightness of the indoor space according to the illuminance of the indirect light eye.
9. The device for evaluating brightness of indoor space according to claim 8, wherein the calculation module includes:

   The direct light eye illuminance unit is used to calculate the direct light eye illuminance according to the physical space information, reflection information and glare information, wherein the direct light eye illuminance refers to the illuminance of direct light entering the eye in the vertical illuminance of the eye ;

   The indirect eye illuminance unit is used to calculate the indirect eye illuminance according to the vertical eye illuminance and the direct eye illuminance.
10. The device for evaluating the brightness of an indoor space according to claim 9, wherein the direct light eye illuminance unit comprises:

    The first calculation subunit is used to calculate space reference parameters according to the physical space information and reflection information, wherein the physical space information includes the installation height of the lamp and the floor height of the room, and the reflection information includes the wall reflection coefficient and cut-off distance;

    The second calculation subunit is used to calculate the direct light eye illuminance according to the spatial reference parameter, intercept, glare information and eye vertical illuminance, wherein the glare information includes a reference glare value and a downlight glare value, so The glare value of the downlight refers to the glare value when the lamp is illuminated in the downlight mode.
11. A computer device, comprising a memory and a processor, the memory stores a computer program, wherein the processor implements the steps of the method according to any one of claims 1 to 6 when executing the computer program.
12. A computer-readable storage medium, on which a computer program is stored, wherein, when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are realized.

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