Energy-saving control system and method for buildings

Abstract

The present invention discloses an energy-saving control system and method for a building, and relates to the technical field of energy-saving control of overlapping illumination areas. The method solves the technical problems that, when performing energy-saving adjustment of lighting, the light illumination in the overlapping illumination area is ignored and is higher than that in other areas after superposition, which indirectly causes waste of electric energy, and it is difficult to dynamically adjust the illumination of lamps constituting the overlapping illumination area. The present invention issues a control instruction for the lamp based on the location of personnel in the non-overlapping illumination area, and sets the importance factor of the lamp to be controlled based on the control instruction and the location of the personnel in the overlapping illumination area; the control factor of each lamp to be controlled is calculated based on the importance factor and the location illumination, and the light illumination of each lamp to be controlled is set according to the control factor. The present invention can reduce the energy waste caused by the superposition of illumination, and improve the flexibility and adaptability of the energy-saving system.

Description

Technical Field

[0001] The present invention belongs to the field of building energy-saving control, and relates to energy-saving control technology for overlapping illumination areas, and specifically to an energy-saving control system and method for buildings. Background Art

[0002] As one of the main places for energy consumption, the energy consumption of buildings, such as air conditioning, lighting, and elevators, accounts for a large proportion of the total energy consumption. Traditional building energy-saving control has problems such as high energy consumption, low efficiency, and insufficient intelligence. In order to cope with the energy crisis and improve the level of building management, people have proposed a series of energy-saving systems such as intelligent air conditioning energy-saving system, intelligent lighting energy-saving system, and intelligent lighting energy-saving system.

[0003] At present, most energy-saving systems designed for lighting systems ignore the fact that the illumination of multiple lights will have a superposition effect in the overlapping area when adjusting the lighting energy saving, resulting in the overall illumination of the area being higher than that of other areas after superposition. This part of illumination that is higher than other areas can be indirectly understood as invalid illumination. The existence of this part of invalid illumination not only affects the work of personnel in the current area, but also causes waste of electric energy. At the same time, most energy-saving systems designed for lighting systems find it difficult to dynamically adjust the illumination of lamps that constitute the overlapping lighting areas, and it is difficult to reduce the invalid illumination without affecting the non-overlapping areas, thereby increasing electricity costs.

[0004] Therefore, the present invention discloses an energy-saving control system and method for a building, which are used to solve the above technical problems. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art; to this end, the present invention proposes an energy-saving control system and method for buildings, which are used to solve the technical problems that when performing energy-saving lighting adjustment, the light illumination in the overlapping lighting area is ignored and is higher than that in other areas after superposition, which indirectly causes waste of electric energy, and it is difficult to dynamically adjust the illumination of lamps constituting the overlapping lighting area. The present invention issues lamp control instructions based on the number of positions of people in non-overlapping lighting areas, sets the importance factor of the lamp to be controlled based on the control instruction and the position of the people in the overlapping lighting area; calculates the control factor of each lamp to be controlled based on the importance factor and the position illumination, and sets the light illumination of each lamp to be controlled according to the control factor to solve the above problems.

[0006] To achieve the above-mentioned object, the first aspect of the present invention provides an energy-saving control system for a building, comprising: an intelligent analysis module, and a data collection module, an energy-saving control module and a database connected thereto;

[0007] The data collection module is used to obtain the location and illumination information of each person; wherein the illumination information includes the illumination of the lamp and the location illumination of the person;

[0008] The intelligent analysis module is used to obtain the effective illumination area of ​​each lamp based on the digital twin model, and plan the effective illumination area of ​​each lamp into an illumination overlapping area and a non-illumination overlapping area; issue a control instruction for the lamp based on the number of personnel positions in the non-illumination overlapping area, and set the importance factor of the lamp to be controlled based on the control instruction and the personnel positions in the illumination overlapping area;

[0009] The energy-saving control module is used to calculate the control factor of each lamp to be controlled based on the importance factor and the position illumination, and set the light illumination of each lamp to be controlled according to the control factor.

[0010] Preferably, the method for acquiring the illumination information includes:

[0011] The illumination of each lamp is obtained by an illumination sensor installed on the lamp; a number of illuminations are obtained by an illumination sensor within n meters of each person's position, the mode and percentile of the several illuminations are extracted, and the average value of the mode and percentile is calculated to obtain the illumination of the current person's position; wherein, the percentile of n and the percentile are both obtained through manual setting.

[0012] Preferably, obtaining the effective illumination area of ​​each lamp based on the digital twin model includes:

[0013] Extracting the three-dimensional model of each room in the building and the equipment information of each lamp from the database; wherein the equipment information of the lamp includes the appearance characteristics and physical characteristics of the lamp;

[0014] Build a device model based on the device information of each lamp, and build a simulation model based on the three-dimensional model of each room; combine the device model and the simulation model to generate a lighting digital model;

[0015] The standard power and the lamp operation data corresponding to the standard power are input into the lighting digital model to obtain the effective lighting area of ​​each lamp; wherein, the standard power is obtained by manual setting, and the effective lighting area is the effective lighting range of the current lamp obtained by the lamp under the standard power.

[0016] Preferably, planning the effective illumination area of ​​each lamp into an illumination overlapping area and a non-illumination overlapping area includes:

[0017] Extract the effective illumination area of ​​each lamp, obtain the center point of the overlapping effective illumination area and the straight-line distance between the corresponding position of each lamp and the center point; mark the overlapping effective illumination area as the illumination overlapping area, and sort the corresponding lamps from small to large according to the straight-line distance to obtain an influence sorting table; mark the non-overlapping effective illumination area as the non-illumination overlapping area of ​​the corresponding lamp.

[0018] Preferably, the step of issuing a control instruction for the lamp based on the number of positions of people in the non-illumination overlapping area includes:

[0019] A1: extract the non-lighting overlapping area, and determine whether the number of positions of people in the non-lighting overlapping area is 0; if yes, jump to A2; if no, issue a control instruction 1 to the lamp corresponding to the current non-lighting overlapping area;

[0020] A2: Determine whether there are people in the non-lighting overlapping areas or lighting overlapping areas adjacent to the extracted non-lighting overlapping areas; if yes, issue control instruction 2 to the lamps corresponding to the current non-lighting overlapping areas; if no, jump to A3;

[0021] A3: Determine whether the current time belongs to the manually set constant light time period; if yes, set the light illumination of the lamp corresponding to the non-lighting overlapping area to the minimum value of the standard range of the corresponding lamp; if no, jump to A4; wherein the standard range of the lamp is obtained by manual setting;

[0022] A4: Determine whether the location of the extracted non-illuminated overlapping area belongs to an artificially set always-on area; if yes, set the light illumination of the lamp corresponding to the non-illuminated overlapping area to the minimum value of the standard range of the corresponding lamp; if no, turn off the lamp corresponding to the current non-illuminated overlapping area.

[0023] Preferably, the importance factor of the lamp to be regulated is set based on the regulation instruction and the location of the personnel in the illumination overlapping area, including:

[0024] B1: Extract the illumination overlap area, mark several non-illumination overlap areas corresponding to the effective illumination area constituting the illumination overlap area as target non-overlap areas, and determine whether the number of positions of people in the illumination overlap area is 0; if yes, jump to B2; if no, set the importance factor;

[0025] B2: Determine whether the current time belongs to the manually set constant light time period; if yes, jump to B3; if no, jump to B4;

[0026] B3: Determine whether there is a situation in which the illumination of a lamp in the non-overlapping target areas is not lower than the minimum value of the standard range of the corresponding lamp; if yes, do nothing; if no, set the illumination of the first lamp in the influence ranking table corresponding to the extracted illumination overlapping area to the minimum value of the standard range of the corresponding lamp;

[0027] B4: Determine whether the location of the extracted illumination overlap area belongs to the manually set always-on area; if yes, jump to B3; if no, do nothing.

[0028] Preferably, the setting of the importance factor includes:

[0029] Extract the overlapping illumination areas in sequence, and mark the lamps corresponding to the target non-overlapping areas of the overlapping illumination areas as the lamps to be regulated; obtain the straight-line distance between the positions of each person in the overlapping illumination areas and each lamp to be regulated, and mark the lamp to be regulated with the shortest straight-line distance to the position of the person in sequence as the first regulated lamp for the current person;

[0030] Obtain the ratio BLi of the number of lamps to be regulated that are marked as first regulated lamps to the number of positions of people in the current illumination overlap area; wherein i is the number of the lamp to be regulated;

[0031] Extract the control instructions of the lamps to be controlled in the overlapping illumination area in sequence, and judge whether the control instructions are control instructions one; if yes, extract the number of personnel R1i in the non-overlapping illumination area of ​​the lamps to be controlled, and the total number of personnel ZR1i in the target non-overlapping illumination area of ​​the current overlapping illumination area, and obtain the personnel optimization coefficient Ri of the lamps to be controlled based on the formula Ri=α1×exp(R1i / ZR1i); if no, extract the total number of personnel ZR2i in the non-overlapping illumination area and the overlapping illumination area adjacent to the non-overlapping illumination area of ​​the lamps to be controlled, and obtain the personnel optimization coefficient Ri of the lamps to be controlled based on the formula Ri=α2×exp(ZR2i / (ZR1i+∑ZR2i)); wherein α1 and α2 are both amplitude adjustment coefficients greater than 0, and the value ranges of α1 and α2 are both (0,2]; ∑ is the summation symbol, and the summation range is [1,i];

[0032] The proportion of lamps to be regulated BLi and the personnel optimization coefficient Ri are extracted in turn, and the importance factor Zi of the lamps to be regulated is obtained based on the formula Zi=BLi×Ri / ∑(BLi×Ri); where ∑ is the summation symbol, and the summation range is [1,i];

[0033] Determine whether the number of importance factors Zi of the lamps to be regulated is less than or equal to 1; if yes, do nothing; if no, mark the maximum value of the importance factors Zi as the importance factor Zi of the current lamp to be regulated.

[0034] Preferably, the step of calculating the control factor of each lamp to be controlled based on the importance factor and the position illumination includes:

[0035] Extracting an importance correspondence table from a database, and extracting an adaptation factor SZ of the lamp to be controlled from the importance correspondence table based on the importance factor;

[0036] Extract the position illuminance of each person in the effective lighting area corresponding to the lamp to be regulated, extract the mode and percentile of several position illuminances, calculate the average value of the mode and percentile to obtain the characteristic position illuminance TD of the current lamp to be regulated; wherein the percentile of the percentile is obtained by manual setting;

[0037] Based on the formula TZ=β×SZ×TD / BTD, the control factor TZ of each lamp to be controlled is obtained; wherein β is a manually set proportional adjustment coefficient, and the value range of β is (0,2]; BTD is the standard position illuminance of each lamp to be controlled.

[0038] Preferably, the step of setting the light illumination of each lamp to be regulated according to the regulation factor includes:

[0039] C1: extract the control factor TZ of each lamp to be controlled, calculate the product of the control factor TZ and the standard illumination to obtain the light illumination of each lamp to be controlled, extract the light illumination of the lamp to be controlled in turn, and judge whether the light illumination is greater than the maximum value of the standard range of the current lamp to be controlled; if yes, use the maximum value of the standard range to update the light illumination; if no, jump to C2; wherein the standard illumination is the middle value of the standard range;

[0040] C2: Determine whether the light illumination is less than the minimum value of the standard range of the lamp to be regulated; if yes, update the light illumination using the minimum value of the standard range; if no, update the light illumination by adding zero;

[0041] C3: Set the illumination of the lamp to be controlled according to the updated illumination of the lamp to be controlled.

[0042] A second aspect of the present invention provides an energy-saving control method for a building, comprising the following steps:

[0043] S1: Obtain the location and illumination information of each person;

[0044] S2: Based on the digital twin model, the effective illumination area of ​​each lamp is obtained, and the effective illumination area of ​​each lamp is planned into an illumination overlap area and a non-illumination overlap area; based on the number of personnel positions in the non-illumination overlap area, a control instruction of the lamp is issued, and the importance factor of the lamp to be controlled is set based on the control instruction and the personnel positions in the illumination overlap area;

[0045] S3: Calculate the control factor of each lamp to be controlled based on the importance factor and the position illumination, and set the light illumination of each lamp to be controlled according to the control factor.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] 1. The present invention issues control instructions for lamps based on the number of positions of personnel in non-illumination overlapping areas, sets importance factors of lamps to be controlled based on the control instructions and positions of personnel in illumination overlapping areas; calculates control factors of each lamp to be controlled based on the importance factor and position illumination, and sets the illumination of each lamp to be controlled according to the control factor, thereby solving the technical problems of ignoring the fact that the illumination of the illumination overlapping areas is higher than that of other areas after superposition, which indirectly causes waste of electric energy, and difficulty in dynamically adjusting the illumination of lamps constituting the illumination overlapping areas, when performing energy-saving light adjustment. The present invention can reduce the energy waste caused by illumination superposition, and improve the flexibility and adaptability of the energy-saving system.

[0048] 2. The present invention calculates the importance factor through the ratio of lamps to be regulated and the personnel optimization coefficient, so that the location and number of personnel are taken into account when analyzing the importance factor. When dynamically selecting the degree of adjustment of the light illumination of lamps constituting the current overlapping area of ​​illumination through the importance factor, the light output of each lamp to be regulated from the overlapping area can be set according to the current actual situation, so that the overlapping area of ​​illumination can be more accurately divided into the light illumination of each lamp to be regulated according to demand. Under the condition of ensuring the lighting quality, the power of the lamp to be regulated can be dynamically reduced, which can reduce the waste of electricity resources.

[0049] 3. The present invention sets the illumination of the lamp to be regulated by calculating the regulation factor. It can dynamically adjust the illumination of the lamps constituting the overlapping illumination area while ensuring the normal working illumination, effectively reducing the energy consumption caused by excessive illumination in the overlapping illumination area, which helps to save energy and reduce lighting costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 It is a schematic diagram of the operation steps of the present invention;

[0052] Figure 2 It is a schematic diagram of the system module of the present invention;

[0053] Figure 3 A schematic diagram of the operation steps for setting importance factors of the present invention;

[0054] Figure 4 A local graph is calculated for the importance factor of the present invention. DETAILED DESCRIPTION

[0055] The technical scheme of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] See also Figure 1-Figure 2 , the first aspect of the present invention provides an energy-saving control system for a building, comprising: an intelligent analysis module, and a data collection module, an energy-saving control module and a database connected thereto;

[0057] Data collection module: used to obtain the location and illumination information of each person; wherein the illumination information includes the illumination of the lamp and the location illumination of the person;

[0058] Intelligent analysis module: used to obtain the effective lighting area of ​​each lamp based on the digital twin model, and plan the effective lighting area of ​​each lamp into the lighting overlap area and the non-lighting overlap area; issue the control instructions of the lamps based on the number of personnel positions in the non-lighting overlap area, and set the importance factor of the lamps to be controlled based on the control instructions and the personnel positions in the lighting overlap area;

[0059] Energy-saving control module: used to calculate the control factor of each lamp to be controlled based on the importance factor and the position illumination, and set the light illumination of each lamp to be controlled according to the control factor.

[0060] It is worth noting that the present invention sets the illumination of the lamp to be regulated by calculating the regulation factor. It can dynamically adjust the illumination of the lamps constituting the overlapping illumination area while ensuring the normal working illumination, effectively reducing the energy consumption caused by excessive illumination in the overlapping illumination area, which helps to save energy and reduce lighting costs.

[0061] The method for obtaining illumination information in this application includes:

[0062] The illumination of each lamp is obtained through an illumination sensor installed on the lamp; a number of illuminations are obtained through an illumination sensor within n meters of each person's position, the mode and percentile of the several illuminations are extracted, and the average of the mode and percentile is calculated to obtain the illumination of the current person's position; wherein, the percentile of n and percentile are both obtained through manual settings.

[0063] It should be noted that in the present invention, the percentile is the value at a specific percentile after a number of illuminances are sorted; for example, if a number of illuminances are sorted from large to small, if the manually set percentile is 10%, then the data at the 10% position is the percentile of the number of illuminances. If there is no data at the 10% position, the data closest to the 10% position is used as the percentile of the number of illuminances.

[0064] In this application, the effective illumination area of ​​each lamp is obtained based on the digital twin model, including:

[0065] Extracting the three-dimensional model of each room in the building and the equipment information of each lamp from the database; wherein the equipment information of the lamp includes the appearance characteristics and physical characteristics of the lamp;

[0066] Build a device model based on the device information of each lamp, and build a simulation model based on the three-dimensional model of each room; combine the device model and the simulation model to generate a lighting digital model;

[0067] The standard power and the lamp operation data corresponding to the standard power are input into the lighting digital model to obtain the effective lighting area of ​​each lamp; wherein, the standard power is obtained by manual setting, and the effective lighting area is the effective lighting range of the current lamp obtained by the lamp under the standard power.

[0068] It should be noted that, when obtaining the effective illumination area, if there is an area that is not marked as the effective illumination area, such area will be included in the effective illumination area of ​​the nearest lamp.

[0069] It should be noted that the appearance characteristics of the lamp's equipment information include the lamp's size and shape, and the physical characteristics include the lamp's material, electrical characteristics, luminous flux, etc.

[0070] In this application, the effective illumination area of ​​each lamp is planned as an illumination overlap area and a non-illumination overlap area, including:

[0071] Extract the effective illumination area of ​​each lamp, obtain the center point of the overlapping effective illumination area and the straight-line distance between the corresponding position of each lamp and the center point; mark the overlapping effective illumination area as the illumination overlapping area, and sort the corresponding lamps from small to large according to the straight-line distance to obtain an influence sorting table; mark the non-overlapping effective illumination area as the non-illumination overlapping area of ​​the corresponding lamp.

[0072] It should be noted that the illumination overlap area may be composed of the effective illumination areas of two or more lamps. If the illumination overlap area is composed of the effective illumination areas of two lamps, the overlap area of ​​the effective illumination areas of the two lamps is marked as the illumination overlap area; if the illumination overlap area is composed of the effective illumination areas of multiple lamps, there may be several illumination overlap areas, and the several illumination overlap areas formed by the effective illumination areas of multiple lamps are all marked as independent illumination overlap areas;

[0073] For example: if the effective illumination area formed by lamp 1 is effective illumination area Y1;

[0074] The effective illumination area formed by lamp 2 is the effective illumination area Y2;

[0075] And the overlapping area of ​​the effective illumination area Y1 and the effective illumination area Y2 is area Q12, then the overlapping illumination area formed by lamp 1 and lamp 2 is area Q12;

[0076] If the effective illumination area formed by lamp 3 is the effective illumination area Y3;

[0077] The effective illumination area formed by lamp 4 is the effective illumination area Y4;

[0078] The effective illumination area formed by lamp 5 is the effective illumination area Y5;

[0079] The overlapping area of ​​the effective illumination area Y3 and the effective illumination area Y4 is area Q34, the overlapping area of ​​the effective illumination area Y4 and the effective illumination area Y5 is area Q45, the overlapping area of ​​the effective illumination area Y3 and the effective illumination area Y5 is area Q35, and the overlapping area of ​​the effective illumination area Y3, the effective illumination area Y4 and the effective illumination area Y5 is area Q345. Then the overlapping illumination areas formed by lamp 3, lamp 4 and lamp 5 are area Q34, area Q45, area Q35 and area Q345.

[0080] In this application, the control instructions of the lamps are issued based on the number of people in the non-lighting overlapping area, including:

[0081] A1: Extract the non-lighting overlapping area and determine whether the number of people in the non-lighting overlapping area is 0; if yes, jump to A2; if no, issue a control instruction 1 to the lamp corresponding to the current non-lighting overlapping area;

[0082] A2: Determine whether there are people in the non-lighting overlapping areas or lighting overlapping areas adjacent to the extracted non-lighting overlapping areas; if yes, issue control instruction 2 to the lamps corresponding to the current non-lighting overlapping areas; if no, jump to A3;

[0083] A3: Determine whether the current time belongs to the manually set constant light time period; if yes, set the light illumination of the lamp corresponding to the non-light overlapping area to the minimum value of the standard range of the corresponding lamp; if no, jump to A4; wherein the standard range of the lamp is obtained by manual setting;

[0084] A4: Determine whether the location of the extracted non-lighting overlapping area belongs to the artificially set always-on area; if yes, set the light illumination of the lamp corresponding to the non-lighting overlapping area to the minimum value of the standard range of the corresponding lamp; if no, turn off the lamp corresponding to the current non-lighting overlapping area.

[0085] It should be noted that, in the non-illuminated overlapping region or the illuminated overlapping region adjacent to the extracted non-illuminated overlapping region, adjacent means connected at the boundary, that is, the non-illuminated overlapping region or the illuminated overlapping region connected at the boundary of the extracted non-illuminated overlapping region.

[0086] It should be noted that the always-on time period and always-on area provided in the present invention are used to avoid potential hidden dangers caused by adjusting the illumination of the lamp when no one is in the always-on time period and always-on area.

[0087] In this application, the importance factors of the lamps to be controlled are set based on the control instructions and the location of the personnel in the overlapping area of ​​lighting, including:

[0088] B1: Extract the illumination overlap area, mark several non-illumination overlap areas corresponding to the effective illumination area constituting the illumination overlap area as target non-overlap areas, and determine whether the number of personnel positions in the illumination overlap area is 0; if yes, jump to B2; if no, set the importance factor;

[0089] B2: Determine whether the current time belongs to the manually set constant light time period; if yes, jump to B3; if no, jump to B4;

[0090] B3: Determine whether there is a situation in which the illumination of a lamp in a plurality of target non-overlapping areas is not lower than the minimum value of the standard range of the corresponding lamp; if yes, do nothing; if no, set the illumination of the first lamp in the influence ranking table corresponding to the extracted illumination overlapping area to the minimum value of the standard range of the corresponding lamp;

[0091] B4: Determine whether the location of the extracted illumination overlap area belongs to the manually set always-on area; if yes, jump to B3; if no, do nothing.

[0092] It should be noted that the standard range of lamps is obtained based on manual settings, and the standard ranges of lamps of different models in different locations may be different. For example, if the standard range of lamp 1 is [90lux, 100lux], then when it is set to the minimum value of the standard range of the corresponding lamp, the light illuminance of lamp 1 is set to 90lux; if the standard range of lamp 2 is [85lux, 95lux], then when it is set to the minimum value of the standard range of the corresponding lamp, the light illuminance of lamp 2 is set to 85lux.

[0093] It should be noted that illumination refers to light intensity, and its unit is lux.

[0094] It should be noted that if the light illumination of a lamp is lower than the minimum value of the standard range of the corresponding lamp, it means that the current lamp is set to be off.

[0095] See also Figure 3 , the importance factors are set in this application, including:

[0096] Extract the overlapping illumination areas in sequence, and mark the lamps corresponding to the target non-overlapping areas of the overlapping illumination areas as the lamps to be regulated; obtain the straight-line distance between the positions of each person in the overlapping illumination areas and each lamp to be regulated, and mark the lamp to be regulated with the shortest straight-line distance to the position of the person in sequence as the first regulated lamp for the current person;

[0097] Obtain the ratio BLi of the number of lamps to be regulated that are marked as first regulated lamps to the number of positions of people in the current illumination overlap area; wherein i is the number of the lamp to be regulated;

[0098] Extract the control instructions of the lamps to be controlled in the overlapping illumination area in sequence, and judge whether the control instructions are control instructions one; if yes, extract the number of personnel R1i in the non-overlapping illumination area of ​​the lamps to be controlled, and the total number of personnel ZR1i in the target non-overlapping area of ​​the current overlapping illumination area, and obtain the personnel optimization coefficient Ri of the lamps to be controlled based on the formula Ri=α1×exp(R1i / ZR1i); if no, extract the total number of personnel ZR2i in the non-overlapping illumination area and the overlapping illumination area adjacent to the non-overlapping illumination area of ​​the lamps to be controlled, and obtain the personnel optimization coefficient Ri of the lamps to be controlled based on the formula Ri=α2×exp(ZR2i / (ZR1i+∑ZR2i)); wherein, α1 and α2 are both amplitude adjustment coefficients greater than 0, and the value ranges of α1 and α2 are both (0,2]; ∑ is the summation symbol, and the summation range is [1,i];

[0099] The proportion of lamps to be regulated BLi and the personnel optimization coefficient Ri are extracted in turn, and the importance factor Zi of the lamps to be regulated is obtained based on the formula Zi=BLi×Ri / ∑(BLi×Ri); where ∑ is the summation symbol, and the summation range is [1,i];

[0100] Determine whether the number of importance factors Zi of the lamps to be regulated is less than or equal to 1; if yes, do nothing; if no, mark the maximum value of the importance factors Zi as the importance factor Zi of the current lamp to be regulated.

[0101] It is worth noting that the present invention calculates the importance factor through the proportion of lamps to be controlled and the personnel optimization coefficient, so that the location and number of personnel are taken into account when analyzing the importance factor. When the degree of adjustment of the light illumination of the lamps constituting the current overlapping area of ​​lighting is dynamically selected through the importance factor, the light output of each lamp to be controlled from the overlapping area can be set according to the current actual situation, so that the overlapping area of ​​lighting can be more accurately divided into the light illumination of each lamp to be controlled according to demand. While ensuring the lighting quality, the power of the lamp to be controlled can be dynamically reduced, which can reduce the waste of electricity resources.

[0102] It should be noted that the present invention determines whether the number of importance factors Zi of the lamp to be controlled is less than or equal to 1 in order to avoid the situation where the same lamp to be controlled is affected by the analysis of different overlapping illumination areas; such a situation may result in the existence of several importance factors Zi for the same lamp to be controlled.

[0103] It is worth noting that the present invention marks the maximum value in the importance factor Zi as the importance factor Zi of the current lamp to be regulated because: for the same lamp to be regulated, the effective illumination area formed may constitute several overlapping illumination areas. At this time, priority should be given to the situation with the least overall impact when adjusting the light illumination of the lamp. In the standard range of light illumination, the working comfort of higher illumination is greater than that of lower illumination. Therefore, the present invention marks the maximum value in the importance factor Zi as the importance factor Zi of the current lamp to be regulated. In this way, when adjusting the light illumination of the lamp, in the effective illumination area of ​​the lamp to be regulated corresponding to the maximum value, the impact of the light illumination adjustment on the staff can be effectively reduced.

[0104] It should be noted that α1 and α2 are both amplitude adjustment coefficients greater than 0, α1 is used to adjust the degree of influence of the number of personnel R1i and the total number of personnel ZR1i in the non-illuminated overlapping area on the personnel optimization coefficient Ri; α2 is used to adjust the degree of influence of the number of personnel R1i and the total number of personnel ZR2i in the non-illuminated overlapping area on the personnel optimization coefficient Ri; when other conditions remain unchanged, the larger α1 and α2 are, the larger the value of the personnel optimization coefficient Ri is, and the smaller α1 and α2 are, the smaller the value of the personnel optimization coefficient Ri is.

[0105] It should be noted that when the first control instruction is issued to the lamp corresponding to the current non-lighting overlapping area, it means that there are people in the current non-lighting overlapping area. Since the people who are most affected by the illumination control of the lamps are the people in the non-lighting overlapping area of ​​the lamps, at this time, we only need to focus the analysis on the current non-lighting overlapping area. The people in the current non-lighting overlapping area are not affected, which can indirectly indicate that the people in the adjacent areas will not be affected by the illumination control of the current lamps. When the second control instruction is issued to the lamp corresponding to the current non-lighting overlapping area, it means that there are no people in the current non-lighting overlapping area, but there are people in the adjacent areas. At this time, we need to consider whether the illumination control of the lamps in the current non-lighting overlapping area will affect the people in the adjacent areas.

[0106] For example, Figure 4 As shown, in this embodiment, if the illumination overlap area is area Q345, the lamps formed are: lamp 3, lamp 4 and lamp 5, and the people in area Q345 are: person 1, person 2, person 3 and person 4;

[0107] Mark the lamps corresponding to the target non-overlapping area of ​​area Q345 as lamps to be controlled: lamp 3 to be controlled, lamp 4 to be controlled, and lamp 5 to be controlled;

[0108] Obtain the straight-line distance between each person's position in area Q345 and each lamp to be adjusted, and mark the lamp to be adjusted with the shortest straight-line distance to the person's position as the first lamp to be adjusted by the current person, and obtain:

[0109] The first lamp controlled by person 1 is the lamp to be controlled 3;

[0110] The first lamp controlled by person 2 is the lamp to be controlled 3;

[0111] The first lamp controlled by person 3 is the lamp to be controlled 4;

[0112] The first lamp controlled by person 4 is the lamp to be controlled 5;

[0113] If the ratio of the number of the lamps to be regulated 3 marked as the first regulated lamps to the number of positions of the people in the current illumination overlapping area BL1=2 / 4=0.5;

[0114] The ratio of the number of the lamps to be regulated 4 marked as the first regulated lamps to the number of positions of people in the current illumination overlapping area BL2=1 / 4=0.25;

[0115] The ratio of the number of lamps to be regulated 5 marked as the first regulated lamps to the number of positions of people in the current illumination overlap area BL3=1 / 4=0.25; wherein the number i of the lamp to be regulated 3=1, the number i of the lamp to be regulated 4=2, and the number i of the lamp to be regulated 5=3;

[0116] Take the lamp 3 to be controlled corresponding to area Q345 as an example:

[0117] Extract the control instruction of the lamp 3 to be controlled in area Q345;

[0118] If the number of personnel positions in the non-illumination overlapping area of ​​the lamp 3 to be controlled is not 0, and the control instruction 1 is received, the number of personnel R11=5 in the non-illumination overlapping area of ​​the lamp 3 to be controlled and the total number of personnel ZR11=10 in the target non-illumination overlapping area of ​​the current illumination overlapping area are extracted, and based on the formula R1=α1×exp(R11 / ZR11)=0.95×exp(5 / 10)=1.566, the personnel optimization coefficient R1=1.566 of the lamp 3 to be controlled is obtained; wherein the total number of personnel ZR11 can be understood as the sum of the number of personnel in the non-illumination overlapping area of ​​the lamps 3 to be controlled, the lamps 4 to be controlled, and the lamps 5 to be controlled;

[0119] If the number of personnel positions in the non-illumination overlapping area of ​​the lamp 3 to be controlled is 0, and the second control instruction is received, the total number of personnel ZR21=6 in the non-illumination overlapping area and the illumination overlapping area adjacent to the non-illumination overlapping area of ​​the lamp 3 to be controlled is extracted, and based on the formula R1=α2×exp(6 / (10+ZR21+ZR22+ZR23))=0.96×exp(6 / (10+8+5+8))=1.165, the personnel optimization coefficient R1=1.165 of the lamp 3 to be controlled is obtained;

[0120] Among them, the value of the total number of personnel ZR21 is Figure 4 The sum of the number of people in the effective illumination area of ​​area Q34, area Q35, area Q345 and lamp 6; the value of the total number of people ZR22 is Figure 4 The sum of the number of people in the middle area Q34, area Q45 and area Q345; the value of the total number of people ZR23 is Figure 4 The sum of the number of people in the effective illumination area of ​​the middle area Q45, area Q35, area Q345 and lamp 7; the value of the amplitude adjustment coefficient α1 is 0.95, and the value of the amplitude adjustment coefficient α2 is 0.96;

[0121] If the lamp 3 to be controlled receives the control instruction 1, the personnel optimization coefficient R1 of the lamp 3 to be controlled is 1.566, and the proportion BL1 of the lamp 3 to be controlled is extracted to be 0.5; based on the formula Z1=BL1×R1 / ∑(BLi×Ri)=BL1×R1 / (BL1×R1+BL2×R2+BL3×R3)=0.5×1.566 / (0.5×1.566+0.25×1.16+0.25×1.28)=0.56, the importance factor Z1=0.56 of the lamp 3 to be controlled is obtained; wherein, in this embodiment, the personnel optimization coefficient R2=1.16 of the lamp 4 to be controlled, and the personnel optimization coefficient R3=1.28 of the lamp 5 to be controlled.

[0122] In this application, the control factors of each lamp to be controlled are calculated based on the importance factor and the position illumination, including:

[0123] Extracting an importance correspondence table from a database, and extracting an adaptation factor SZ of the lamp to be controlled from the importance correspondence table based on the importance factor;

[0124] Extract the position illuminance of each person in the effective lighting area corresponding to the lamp to be controlled, extract the mode and percentile of several position illuminances, calculate the average value of the mode and percentile to obtain the characteristic position illuminance TD of the current lamp to be controlled; the percentile of the percentile is obtained by manual setting;

[0125] Based on the formula TZ=β×SZ×TD / BTD, the control factor TZ of each lamp to be controlled is obtained; wherein β is a manually set proportional adjustment coefficient, and the value range of β is (0,2]; BTD is the standard position illuminance of each lamp to be controlled.

[0126] It should be noted that the importance correspondence table is set based on experience, for example:

[0127] When the importance factor Zi>0.9, the adaptation factor SZ=1.12;

[0128] When the importance factor Zi is located at (0.8, 0.9], the adaptation factor SZ = 1.09;

[0129] When the importance factor Zi is located at (0.7, 0.8], the adaptation factor SZ = 1.06;

[0130] When the importance factor Zi is located at (0.6, 0.7], the adaptation factor SZ = 1.03;

[0131] When the importance factor Zi is in (0.5, 0.6], the adaptation factor SZ = 1;

[0132] When the importance factor Zi is located at (0.4, 0.5], the adaptation factor SZ = 0.95;

[0133] When the importance factor Zi is in (0.3, 0.4], the adaptation factor SZ = 0.9;

[0134] When the importance factor Zi≤0.3, the adaptation factor SZ=0.8.

[0135] It should be noted that when extracting the mode and percentile of the illumination at several positions, the percentile is to sort the illumination at several positions from large to small. If the manually set percentile is 20%, then the data at the 20% position is the percentile of the illumination at several positions. If there is no data at the 20% position, the data closest to the 20% position will be used as the percentile of the illumination at several positions.

[0136] Exemplarily, in this embodiment, if the importance factor Z8 of the lamp 8 to be regulated is 0.76, then the adaptation factor SZ of the lamp 8 to be regulated is extracted from the importance correspondence table as 1.06;

[0137] Extract the position illuminance of each person in the effective lighting area corresponding to the lamp 8 to be regulated, extract the mode and percentile of several position illuminances, calculate the average value of the mode and percentile to obtain the characteristic position illuminance TD=90lux of the lamp 8 to be regulated;

[0138] Based on the formula TZ=β×SZ×TD / BTD=0.98×1.06×90 / 100=0.93492, the control factor TZ=0.93492 of each lamp to be controlled is obtained; among which, the standard position illuminance BTD value of the lamp to be controlled 8 is 100 lux, and the proportional adjustment coefficient β value is 0.98.

[0139] In this application, the illumination of each lamp to be regulated is set according to the regulation factor, including:

[0140] C1: Extract the control factor TZ of each lamp to be controlled, calculate the product of the control factor TZ and the standard illumination to obtain the light illumination of each lamp to be controlled, extract the light illumination of the lamp to be controlled in turn, and judge whether the light illumination is greater than the maximum value of the standard range of the current lamp to be controlled; if yes, use the maximum value of the standard range to update the light illumination; if no, jump to C2; where the standard illumination is the middle value of the standard range;

[0141] C2: Determine whether the light illumination is less than the minimum value of the standard range of the lamp to be regulated; if yes, update the light illumination using the minimum value of the standard range; if no, update the light illumination by adding zero;

[0142] C3: Set the illumination of the lamp to be controlled according to the updated illumination of the lamp to be controlled.

[0143] A second aspect of the present invention provides an energy-saving control method for a building, comprising the following steps:

[0144] S1: Obtain the location and illumination information of each person;

[0145] S2: Based on the digital twin model, the effective illumination area of ​​each lamp is obtained, and the effective illumination area of ​​each lamp is planned into an illumination overlap area and a non-illumination overlap area; based on the number of personnel positions in the non-illumination overlap area, a control instruction of the lamp is issued, and the importance factor of the lamp to be controlled is set based on the control instruction and the personnel positions in the illumination overlap area;

[0146] S3: Calculate the control factor of each lamp to be controlled based on the importance factor and the position illumination, and set the light illumination of each lamp to be controlled according to the control factor.

[0147] Part of the data in the above formula is calculated by removing the dimension and taking its numerical value. The formula is a formula closest to the actual situation obtained by software simulation of a large amount of collected data; the preset parameters and preset thresholds in the formula are set by technical personnel in this field according to actual conditions or obtained through simulation of a large amount of data.

[0148] Working principle of the present invention:

[0149] Obtain the location and illumination information of each person; obtain the effective illumination area of ​​each lamp based on the digital twin model, and plan the effective illumination area of ​​each lamp into an illumination overlapping area and a non-illumination overlapping area; issue lamp control instructions based on the number of personnel locations in the non-illumination overlapping area; set the importance factor of the lamp to be controlled based on the control instructions and the location of the personnel in the illumination overlapping area. In this step, the importance factor is calculated through the proportion of the lamps to be controlled and the personnel optimization coefficient, so that the location and number of personnel are taken into account when analyzing the importance factor, so that the illumination of each lamp to be controlled can be more accurately divided according to the needs in the illumination overlapping area; the control factor of each lamp to be controlled is calculated based on the importance factor and the position illumination, and the illumination of each lamp to be controlled is set according to the control factor.

[0150] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. An energy-saving control system for a building, characterized in that: include: Intelligent analysis module, and the data collection module, energy-saving control module and database connected thereto; The data collection module is used to obtain the location and illumination information of each person; wherein the illumination information includes the illumination of the lamp and the location illumination of the person; The intelligent analysis module is used to obtain the effective illumination area of ​​each lamp based on the digital twin model, and plan the effective illumination area of ​​each lamp into an illumination overlapping area and a non-illumination overlapping area; issue a control instruction for the lamp based on the number of personnel positions in the non-illumination overlapping area, and set the importance factor of the lamp to be controlled based on the control instruction and the personnel positions in the illumination overlapping area; The energy-saving control module is used to calculate the control factor of each lamp to be controlled based on the importance factor and the position illumination, and set the light illumination of each lamp to be controlled according to the control factor.

2. The energy-saving control system for a building according to claim 1, characterized in that: The method for obtaining the illumination information includes: The illumination of each lamp is obtained by an illumination sensor installed on the lamp; a number of illuminations are obtained by an illumination sensor within n meters of each person's position, the mode and percentile of the several illuminations are extracted, and the average value of the mode and percentile is calculated to obtain the illumination of the current person's position.

3. The energy-saving control system for a building according to claim 1, characterized in that: The obtaining of the effective illumination area of ​​each lamp based on the digital twin model includes: Extracting the three-dimensional model of each room in the building and the equipment information of each lamp from the database; wherein the equipment information of the lamp includes the appearance characteristics and physical characteristics of the lamp; Build a device model based on the device information of each lamp, and build a simulation model based on the three-dimensional model of each room; combine the device model and the simulation model to generate a lighting digital model; The standard power and the lamp operation data corresponding to the standard power are input into the lighting digital model to obtain the effective lighting area of ​​each lamp; wherein the effective lighting area is the effective lighting range of the current lamp obtained by the lamp under the standard power.

4. The energy-saving control system for a building according to claim 1, characterized in that: The planning of the effective illumination area of ​​each lamp into an illumination overlap area and a non-illumination overlap area includes: Extract the effective illumination area of ​​each lamp, obtain the center point of the overlapping effective illumination area and the straight-line distance between the corresponding position of each lamp and the center point; mark the overlapping effective illumination area as the illumination overlapping area, and sort the corresponding lamps from small to large according to the straight-line distance to obtain an influence sorting table; mark the non-overlapping effective illumination area as the non-illumination overlapping area of ​​the corresponding lamp.

5. The energy-saving control system for a building according to claim 4, characterized in that: The issuing of a control instruction for the lamp based on the number of positions of people in the non-illumination overlapping area includes: A1: extract the non-lighting overlapping area, and determine whether the number of positions of people in the non-lighting overlapping area is 0; if yes, jump to A2; if no, issue a control instruction 1 to the lamp corresponding to the current non-lighting overlapping area; A2: Determine whether there are people in the non-lighting overlapping areas or lighting overlapping areas adjacent to the extracted non-lighting overlapping areas; if yes, issue control instruction 2 to the lamps corresponding to the current non-lighting overlapping areas; if no, jump to A3; A3: Determine whether the current time belongs to the manually set constant light time period; if yes, set the light illumination of the lamp corresponding to the non-lighting overlapping area to the minimum value of the standard range of the corresponding lamp; if no, jump to A4; A4: Determine whether the location of the extracted non-illuminated overlapping area belongs to an artificially set always-on area; if yes, set the light illumination of the lamp corresponding to the non-illuminated overlapping area to the minimum value of the standard range of the corresponding lamp; if no, turn off the lamp corresponding to the current non-illuminated overlapping area.

6. The energy-saving control system for a building according to claim 5, characterized in that: The importance factor of the lamp to be controlled is set based on the control instruction and the location of the personnel in the overlapping area of ​​illumination, including: B1: Extract the illumination overlap area, mark several non-illumination overlap areas corresponding to the effective illumination area constituting the illumination overlap area as target non-overlap areas, and determine whether the number of positions of people in the illumination overlap area is 0; if yes, jump to B2; if no, set the importance factor; B2: Determine whether the current time belongs to the manually set constant light time period; if yes, jump to B3; if no, jump to B4; B3: Determine whether there is a situation in which the illumination of a lamp in the non-overlapping target areas is not lower than the minimum value of the standard range of the corresponding lamp; if yes, do nothing; if no, set the illumination of the first lamp in the influence ranking table corresponding to the extracted illumination overlapping area to the minimum value of the standard range of the corresponding lamp; B4: Determine whether the location of the extracted illumination overlap area belongs to the manually set always-on area; if yes, jump to B3; if no, do nothing.

7. The energy-saving control system for a building according to claim 6, characterized in that: The setting of the importance factor includes: Extract the overlapping illumination areas in sequence, and mark the lamps corresponding to the target non-overlapping areas of the overlapping illumination areas as the lamps to be regulated; obtain the straight-line distance between the positions of each person in the overlapping illumination areas and each lamp to be regulated, and mark the lamp to be regulated with the shortest straight-line distance to the position of the person in sequence as the first regulated lamp for the current person; Obtain the ratio BLi of the number of lamps to be regulated that are marked as first regulated lamps to the number of positions of people in the current illumination overlap area; wherein i is the number of the lamp to be regulated; Extract the control instructions of the lamps to be controlled in the overlapping illumination area in sequence, and judge whether the control instructions are control instructions one; if yes, extract the number of personnel R1i in the non-overlapping illumination area of ​​the lamps to be controlled, and the total number of personnel ZR1i in the target non-overlapping illumination area of ​​the current overlapping illumination area, and obtain the personnel optimization coefficient Ri of the lamps to be controlled based on the formula Ri=α1×exp(R1i / ZR1i); if no, extract the total number of personnel ZR2i in the non-overlapping illumination area and the overlapping illumination area adjacent to the non-overlapping illumination area of ​​the lamps to be controlled, and obtain the personnel optimization coefficient Ri of the lamps to be controlled based on the formula Ri=α2×exp(ZR2i / (ZR1i+∑ZR2i)); wherein α1 and α2 are both amplitude adjustment coefficients greater than 0, and the value ranges of α1 and α2 are both (0,2]; ∑ is the summation symbol, and the summation range is [1,i]; The proportion of lamps to be regulated BLi and the personnel optimization coefficient Ri are extracted in turn, and the importance factor Zi of the lamps to be regulated is obtained based on the formula Zi=BLi×Ri / ∑(BLi×Ri); where ∑ is the summation symbol, and the summation range is [1,i]; Determine whether the number of importance factors Zi of the lamps to be regulated is less than or equal to 1; if yes, do nothing; if no, mark the maximum value of the importance factors Zi as the importance factor Zi of the current lamp to be regulated.

8. The energy-saving control system for a building according to claim 1, characterized in that: The control factor of each lamp to be controlled is calculated based on the importance factor and the position illumination, including: Extracting an importance correspondence table from a database, and extracting an adaptation factor SZ of the lamp to be controlled from the importance correspondence table based on the importance factor; Extract the position illuminance of each person in the effective lighting area corresponding to the lamp to be regulated, extract the mode and percentile of several position illuminances, and calculate the average value of the mode and percentile to obtain the characteristic position illuminance TD of the current lamp to be regulated; Based on the formula TZ=β×SZ×TD / BTD, the control factor TZ of each lamp to be controlled is obtained; wherein β is the proportional adjustment coefficient, and the value range of β is (0,2]; BTD is the standard position illuminance of each lamp to be controlled.

9. The energy-saving control system for a building according to claim 6, characterized in that: The step of setting the illumination of each lamp to be regulated according to the regulation factor includes: C1: extract the control factor TZ of each lamp to be controlled, calculate the product of the control factor TZ and the standard illumination to obtain the light illumination of each lamp to be controlled, extract the light illumination of the lamp to be controlled in turn, and judge whether the light illumination is greater than the maximum value of the standard range of the current lamp to be controlled; if yes, use the maximum value of the standard range to update the light illumination; if no, jump to C2; wherein the standard illumination is the middle value of the standard range; C2: Determine whether the light illumination is less than the minimum value of the standard range of the lamp to be regulated; if yes, update the light illumination using the minimum value of the standard range; if no, update the light illumination by adding zero; C3: Set the illumination of the lamp to be controlled according to the updated illumination of the lamp to be controlled.

10. An energy-saving control method for a building, based on the energy-saving control system for a building according to any one of claims 1 to 9, characterized in that: S1: Obtain the location and illumination information of each person; S2: Based on the digital twin model, the effective illumination area of ​​each lamp is obtained, and the effective illumination area of ​​each lamp is planned into an illumination overlap area and a non-illumination overlap area; based on the number of personnel positions in the non-illumination overlap area, a control instruction of the lamp is issued, and the importance factor of the lamp to be controlled is set based on the control instruction and the personnel positions in the illumination overlap area; S3: Calculate the control factor of each lamp to be controlled based on the importance factor and the position illumination, and set the light illumination of each lamp to be controlled according to the control factor.

Images