Intelligent illumination control system based on Internet of Things

Abstract

The invention relates to the technical field of lighting, in particular to an intelligent lighting control system based on the Internet of Things, which comprises a sensing layer, an application layer and an equipment layer, and is characterized in that the sensing layer comprises illumination sensor units, human body induction sensor units and a meteorological linkage unit, and the illumination sensor units are distributed in various areas of a building and are used for monitoring illumination intensity; the human body induction sensor unit is installed in a public area and used for detecting personnel activities, the weather linkage unit obtains real-time weather forecast information through a network, and the application layer comprises a dimming mode and scene setting unit, an intelligent control panel unit, a central control unit and a mobile phone APP control unit. According to the scheme, through the illumination sensor and human body induction, the illumination brightness is accurately regulated and controlled, the brightness is automatically reduced or the lamp is turned off in an unmanned area, opening and closing of the curtain are optimized in combination with meteorological information, natural light is fully utilized, energy consumption is effectively reduced, the operation cost is reduced, and perfect balance of energy conservation, environmental protection and efficient illumination is achieved.

Description

Technical Field

[0001] The present invention relates to the field of lighting technology, and in particular to an intelligent lighting control system based on the Internet of Things. Background Art

[0002] In modern buildings, lighting systems are an indispensable and important part. Traditional lighting systems usually use fixed lighting brightness settings and cannot be intelligently adjusted according to the actual ambient light intensity and personnel activities. For example, when there is sufficient natural light during the day, indoor lamps still maintain a high brightness, causing unnecessary energy consumption. In unmanned areas, lamps are also turned on continuously, wasting a lot of electricity and increasing operating costs. This is not in line with the development concept of energy conservation and environmental protection. With the development of Internet of Things technology, there is an urgent need for an intelligent lighting control system that can overcome the above problems in order to achieve the goals of energy conservation and environmental protection, improve comfort and convenience, and meet the needs of modern buildings for intelligent lighting management.

[0003] Therefore, the present invention proposes an intelligent lighting control system based on the Internet of Things, which collects light intensity, personnel activities and meteorological information in real time through the perception layer, performs intelligent control management according to different modes and algorithms at the application layer, and accurately executes instructions at the equipment layer, thereby achieving a balance between energy saving and environmental protection and efficient lighting, improving ease of use and comfort, effectively solving the problems existing in the existing lighting system, and meeting the needs of modern buildings for intelligent, personalized and energy-saving lighting control. Summary of the invention

[0004] Technical problem solved: Traditional lighting cannot intelligently adjust brightness, resulting in waste of resources.

[0005] In view of the deficiencies in the prior art, the present invention provides an intelligent lighting control system based on the Internet of Things, thereby solving the technical problems mentioned in the background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A smart lighting control system based on the Internet of Things, comprising a perception layer, an application layer and a device layer, wherein the perception layer comprises a light sensor unit, a human body sensing sensor unit and a meteorological linkage unit, wherein the light sensor unit is distributed in various areas of a building to monitor light intensity, the human body sensing sensor unit is installed in a public area to detect human activities, and the meteorological linkage unit obtains real-time weather forecast information through a network;

[0008] The application layer includes a dimming mode and scene setting unit, an intelligent control panel unit, a central control unit and a mobile phone APP control unit. The dimming mode and scene setting unit calculates the lighting brightness and the curtain opening and closing angle according to different modes. The intelligent control panel unit provides local convenient operation, the central control unit performs global unified management, and the mobile phone APP control unit realizes remote control;

[0009] The equipment layer includes an intelligent lighting fixture unit and a curtain motor control unit. The intelligent lighting fixture unit provides lighting and can adjust brightness and color temperature. The curtain motor control unit controls the automatic opening and closing of the curtain.

[0010] In one possible implementation, the dimming mode and scene setting unit includes office mode, working mode, off-duty mode, meeting mode, and leisure mode. The lighting brightness and curtain opening and closing angles of each mode are different due to different areas, different personnel activities, and different lighting.

[0011] In a possible implementation, the lighting brightness and the curtain opening and closing angle are calculated by a lighting brightness adjustment algorithm and a curtain opening and closing angle adjustment algorithm respectively to give specific adjustment values, and the lighting brightness adjustment algorithm and the curtain opening and closing angle adjustment algorithm are specifically as follows:

[0012] (I) Lighting brightness adjustment algorithm

[0013] Let L current is the current lighting brightness, L target is the target illumination brightness, S illumintion is the light intensity measured by the light sensor, T time W is the duration of no human activity on the human body sensor. weather A is the weather condition obtained by the meteorological linkage unit. area is the area type. The basic target brightness L is determined according to the area type and the mode of the current time. base ;

[0014] When the light intensity S illumintion Greater than a certain threshold S high , and the area has windows:

[0015]

[0016] When the light intensity S illumintion Less than a certain threshold S low hour: Where k is the compensation coefficient, which means that the darker the light, the greater the brightness increase;

[0017] If the human body sensor detects human activity, the current brightness, i.e. Ltarget =L min ;

[0018] If the human body sensor has no human activity for time T time Exceeding the set time threshold T max ,

[0019]

[0020] (II) Curtain opening and closing angle adjustment algorithm

[0021] Let C current is the current curtain opening and closing angle, C target is the target curtain opening and closing angle, S illumintion is the light intensity, W weather For weather conditions, A area is the area type, M meeting It is the conference mode flag. The basic target opening and closing angle C is determined according to the area type and the mode of the current time. base ;

[0022] When the light intensity S illumintion Greater than a certain threshold S higt , when the area has windows and is not in conference mode:

[0023]

[0024] When the light intensity S illumintion Less than a certain threshold S low , and the area has windows: Where n is the compensation coefficient, which means the darker the light, the wider the curtains open;

[0025] When in conference mode and projection is required, C target = 0, when in conference mode and projection is not required and the lighting is appropriate (S low ≤S illumintion ≤S higt ) target The basic opening and closing angle.

[0026] Beneficial effects compared with the prior art:

[0027] 1. In this solution, the lighting brightness is precisely controlled through light sensors and human body sensors. The brightness is automatically reduced or lights are turned off in unmanned areas. The opening and closing of curtains are optimized based on meteorological information, natural light is fully utilized, energy consumption is effectively reduced, operating costs are reduced, and a perfect balance between energy conservation and environmental protection and efficient lighting is achieved;

[0028] 2. In this solution, through a variety of dimming modes and scene settings, intelligent switching according to personnel activities and ambient light, mobile phone APP and smart panel can be controlled remotely and locally, allowing users to adjust lighting and curtains according to needs anytime and anywhere, creating a comfortable and personalized space, greatly improving the convenience and comfort of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0030] Figure 1 This is a schematic diagram of the framework of an intelligent lighting control system based on the Internet of Things. DETAILED DESCRIPTION

[0031] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can also be implemented in various forms, so the present invention is not limited to the embodiments described below.

[0032] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0033] Example:

[0034] Please refer to Figure 1 As shown, this embodiment introduces a smart lighting control system based on the Internet of Things, including a perception layer, an application layer, and a device layer:

[0035] 1. Perception layer: The perception layer is mainly responsible for collecting environmental information, monitoring light intensity through light sensors, detecting human activities through human body sensors, and obtaining real-time weather forecast information through the network through meteorological linkage, providing a basis for lighting and related equipment control, and realizing intelligent control;

[0036] 1.1. Light sensor unit

[0037] Distributed in various areas of the building, such as elevator halls, public corridors, office areas, parking lots, restaurants, lobbies, etc., light sensors can monitor the ambient light intensity in real time and convert the data into electrical signals. They use high-precision photosensitive elements to accurately measure light intensity in the range of 0-100000 lux with an accuracy of ±5%. The sensor has an automatic calibration function and can automatically adjust the measurement accuracy according to environmental changes to ensure data accuracy;

[0038] 1.2 Human body sensing sensor unit

[0039] It is mainly installed in public areas, such as public corridors, parking lots, etc. It detects human movement by emitting and receiving infrared rays. When human activity is detected, the corresponding signal is triggered. It has high sensitivity and a wide detection angle of up to 120°. The sensing distance can be adjusted within the range of 3-10 meters. It uses an intelligent sensing algorithm to distinguish between human activity and other interference factors, such as the movement of small animals, to reduce false triggering.

[0040] 1.3. Meteorological linkage unit

[0041] The unit obtains real-time weather forecast information through the Internet, including data such as temperature, weather conditions (such as sunny, cloudy, etc.) and light intensity.

[0042] 2. Application layer: The application layer realizes intelligent control and management of the system. It realizes integrated control by setting different modes. The intelligent control panel provides convenient local operation, the central control unit performs global unified management, and the mobile phone APP realizes remote control. The three work together to set scheduled tasks, switch scene modes, and display device status and environmental information, which improves users' control over the lighting system and user experience;

[0043] 2.1. Dimming mode and scene setting unit. The lighting brightness and curtain opening and closing angles in different modes are different for different areas, different personnel activities, and different lighting. The specific lighting brightness and curtain opening and closing angles are calculated by the lighting brightness adjustment algorithm and the curtain opening and closing angle adjustment algorithm respectively to give specific adjustment values;

[0044] 2.1.1 Office Mode

[0045] Applicable to normal working hours in office areas, the brightness of intelligent lighting fixtures is set between 50%-70%, providing a bright environment suitable for office work. In office areas with curtains, the opening and closing angles of the curtains are adjusted according to the outdoor light intensity. If the outdoor light is too strong, the curtains are closed to an appropriate angle to reduce glare, generally maintained at 30%-50%;

[0046] When the human body sensing sensor detects human activity in the office area, the current lighting status is maintained. If no human activity is detected for a period of time (such as 15-30 minutes, which can be set according to actual needs), the brightness of the lamps is automatically adjusted to an energy-saving state of about 30%. When human activity is detected again, the normal office brightness is restored.

[0047] 2.1.2 Work Mode

[0048] Mainly for the morning working hours, such as 8:00-9:00 (adjustable according to the actual working hours), in public corridors (enclosed and open), elevator halls and other public areas, the brightness of smart lighting fixtures is set to 70%-80% to create a bright traffic environment and facilitate personnel to enter the office. The lighting brightness of the underground parking lot is set at 60%-70% to ensure the safety of vehicles and personnel.

[0049] As office workers gradually enter the office area, the lighting in the office area gradually switches to office mode. At the same time, the curtains in each area are adjusted according to the outdoor light conditions and the preset office mode curtain strategy. For example, when there is direct sunlight in the open corridor, the curtains will appropriately block part of the sunlight.

[0050] 2.1.3. Off-duty mode

[0051] After get off work hours, such as 17:00-18:00 (adjustable), the brightness of the intelligent lighting fixtures in the office area is gradually adjusted to 20%-30%, retaining only the basic lighting brightness to meet the needs of security patrols, etc. The lighting brightness of public corridors and elevator halls is reduced to 30%-40%, and the lighting brightness of underground parking lots is adjusted to 30%-40%;

[0052] In areas with curtains, the curtains can be closed or kept partially open as needed. For example, the curtains in the office area can be completely closed to protect the indoor facilities, and the curtains in the open corridor can be adjusted to a suitable angle based on safety and aesthetic requirements;

[0053] 2.1.4 Conference Mode

[0054] Applied to conference rooms, 10-15 minutes before the meeting starts (settable), according to the reservation information of the conference room, the brightness of the intelligent lighting fixtures is adjusted to 80%-100% to provide sufficient lighting, and the curtains are adjusted according to the meeting needs and outdoor light conditions. If a projection presentation is required, the curtains are all closed. If no projection is required and the outdoor light is suitable, the curtains can be opened appropriately, generally maintaining an opening degree of 20%-40%;

[0055] During a meeting, if the human body sensor detects that there is no activity in the meeting room for a certain period of time (such as 5-10 minutes), the brightness of the lamps will be automatically adjusted to an energy-saving state of about 50%. When a person enters again, the brightness will be restored to the meeting brightness.

[0056] 2.1.5 Leisure Mode

[0057] It can be applied to rest areas in office areas or specific leisure places. The brightness of intelligent lighting fixtures is set at 30%-50% to create a warm and comfortable leisure atmosphere. The opening and closing angle of the curtains is adjusted according to the outdoor lighting and indoor environment requirements, and is generally maintained at a large opening of 50%-80% to introduce natural light and provide a good view;

[0058] 2.2. Intelligent control panel unit

[0059] It adopts an integrated panel design and is installed on the wall near the controlled area. There are multiple buttons on the panel, which can be programmed to control the lighting and curtain equipment. The panel has an LCD display screen that can display the equipment status, time, scene mode and other information in the current area. The display screen adopts touch operation, which is convenient for users to set and control. It supports local control and remote control functions. Users can operate directly on the panel or remotely control through mobile phone APP or central control system.

[0060] 2.3. Central control unit (including central control software and server)

[0061] The central control software is installed on the computer in the central computer room, providing a visual interface that can display the status of lighting equipment, personnel activities, environmental parameters and other information on each floor of the building in real time. The server is responsible for storing system data, including equipment configuration information, control strategies, historical data, etc. The server uses a high-performance computer with large-capacity storage and fast data processing capabilities. The central control unit can uniformly manage and control the lighting equipment in the entire building, such as setting timed tasks, scene mode switching, remote device switching, etc.

[0062] 2.4. Mobile APP control unit

[0063] Develop a mobile phone APP for iOS and Android systems. Users can download and install it through their mobile phones. The APP provides a user login interface and supports multiple login methods, such as account and password login, fingerprint recognition login, facial recognition login, etc. The APP interface is simple and intuitive. Users can remotely control the switch, brightness adjustment, scene mode switching, etc. of lighting equipment through their mobile phones. At the same time, the APP can also receive notifications pushed by the system, such as equipment failure alarms, lighting scene switching reminders, etc. It supports device grouping management functions. Users can group lighting equipment according to their needs to facilitate batch control.

[0064] 3. Device layer: The device layer directly executes control instructions. Intelligent lighting fixtures provide lighting with adjustable brightness and color temperature. The curtain motor control unit realizes automatic opening and closing of curtains. They receive instructions from the application layer, accurately adjust the working status, create a comfortable indoor environment, and achieve energy saving goals.

[0065] 3.1. Intelligent lighting fixture unit

[0066] LED lamps are used as lighting sources, which have the advantages of energy saving, long life, and adjustable brightness. The lamps have built-in intelligent control modules that can receive control signals from the network layer to realize switch, dimming and other functions. They support multiple dimming methods, such as PWM dimming, 0-10V dimming, etc. The dimming accuracy can reach 1%. The lamps can adjust the brightness and color temperature according to different scene requirements to provide a comfortable lighting environment. The lamps have overheat protection, short circuit protection and other functions to ensure safe use;

[0067] 3.2 Curtain Motor Control Unit

[0068] The curtains in this unit are all automatically adjustable blinds. The opening and closing and angle adjustment of the curtains are driven by motors. The motor control unit receives signals from the intelligent control panel or central control system to realize automatic control of the curtains. The motor adopts a silent design, runs smoothly, and the noise is less than 30 decibels. The motor has overload protection and travel limit functions to prevent curtain damage and motor overload. It supports multiple control methods, such as manual control, remote control, and automatic control (automatically adjust the curtain state according to light intensity, time and other factors);

[0069] In summary, the specific formulas for the lighting brightness adjustment algorithm and the curtain opening and closing angle adjustment algorithm are as follows:

[0070] 1. Lighting brightness adjustment algorithm

[0071] Let L current is the current lighting brightness (value range 0-100%), L target is the target illumination brightness (determined according to different modes and environmental conditions), S illumintion is the light intensity measured by the light sensor (unit: lux), T time W is the duration of no human activity on the human body sensor. weather is the weather condition obtained by the meteorological linkage unit (e.g., sunny = 1, cloudy = 2, rainy = 3, etc.), A area It is the area type (such as office area = 1, public corridor = 2, parking lot = 3, etc.).

[0072] 1.1. Basic brightness determination:

[0073] Determine the basic target brightness L according to the area type and the mode of the current time base For example, in office mode, the basic target brightness of the office area is L base1 The basic target brightness of the public corridor in the working mode is L base2 75%, etc.

[0074] 1.2. Light intensity adjustment:

[0075] When the light intensity S illumintion Greater than a certain threshold S high1 (For example, on sunny days, the S high1 When the area has windows (determined by area type): (If the calculated result is less than 0, then L target =0);

[0076] When the light intensity S illumintion Less than a certain threshold S low (Such as the office area low1 When set to 500lux): (k is the compensation coefficient, for example, 20%, which means the darker the light, the greater the brightness increase);

[0077] 1.3. Adjustment of personnel activities:

[0078] If the human body sensor detects human activity, the current brightness, i.e. L target =L min ;

[0079] If the human body sensor has no human activity for time T time Exceeding the set time threshold T max (For example, T max1 Set to 20 minutes): (If the calculated result is less than a certain minimum energy-saving brightness threshold L min , such as 10%, then L target =L min );

[0080] 2. Curtain opening and closing angle adjustment algorithm

[0081] Let C current is the current curtain opening and closing angle (the value range is 0-100%, 0 means fully closed, 100% means fully open), C target is the target curtain opening and closing angle, S illumintion is the light intensity, W weather For weather conditions, A area is the area type, M meeting Conference mode flag (1 when in conference mode and projection is required, otherwise 0);

[0082] 2.1. Determination of basic opening and closing angle:

[0083] Determine the basic target opening and closing angle C according to the area type and the mode of the current time base For example, the basic target opening and closing angle C of the office area in office mode base1The basic target opening and closing angle of the public corridor in the working mode is C base2 50%, etc.

[0084] 2.2. Light intensity adjustment:

[0085] When the light intensity S illumintion Greater than a certain threshold S higt (Such as the office area higt1 Set to 5000 lux) The area has windows and is not in conference mode (M meeting =0): (If the calculated result is less than 0, then C target =0);

[0086] When the light intensity S illumintion Less than a certain threshold S low (Such as the office area low1 When the light level is set to 500 lux) and there are windows in the area: (n is the compensation coefficient, for example, 30%, which means the darker the light, the wider the curtains open);

[0087] 2.3. Special scene adjustment (such as conference mode):

[0088] When in conference mode and projection is required, C target = 0; when in conference mode and projection is not required and the lighting is appropriate (S low ≤S illumintion ≤S jigt ), the basic opening and closing angle in conference mode, such as 20%.

[0089] In summary, combined with the relevant functions of each module of the system, the specific implementation of the system is as follows:

[0090] 1. Working mode (taking 8:00-9:00 in the morning as an example)

[0091] The central control unit automatically triggers the work mode according to the preset working hours. First, the brightness of the intelligent lighting fixtures in public areas such as public corridors and elevator halls is increased to 70%-80% according to the preset strategy, providing a bright passage environment for people entering the office. At the same time, the lighting brightness of the underground parking lot is set at 60%-70% to ensure the safety of vehicles and people.

[0092] The weather information obtained by the meteorological linkage unit will fine-tune the above brightness settings. If it is a sunny day, the lighting brightness in the public area can be appropriately reduced by 5%-10%, and if it is cloudy or rainy, it can be increased by 5%-10%;

[0093] For public areas with curtains (such as open corridors), adjust the opening and closing angle of the curtains according to the light intensity and weather conditions. On sunny days, the curtains should block some sunlight and maintain a 40%-60% opening angle. On cloudy days, the curtains should be fully opened to make full use of natural light.

[0094] As office workers enter the office area one after another, the human motion sensors in the office area detect human activity, and the brightness of the smart lighting fixtures gradually switches to the initial brightness of the office mode (such as 50%-70%). The curtains are also adjusted according to the lighting conditions of the office area and the preset office mode strategy. For example, if the outdoor light is too strong, the curtains are closed to 30%-50% to reduce glare. If it is cloudy or the outdoor light intensity is low, the curtains maintain a wide opening of 80%-100%.

[0095] 2. Office Mode

[0096] The light sensor continuously monitors changes in indoor and outdoor light intensity. When the light intensity changes, the central control unit recalculates the target lighting brightness according to the preset algorithm. For example, if the outdoor light intensity suddenly increases and exceeds the set threshold (such as 5000 lux), the brightness of the smart lighting fixture will be reduced accordingly to keep the indoor light stable and comfortable.

[0097] The human body sensing sensor monitors the activities of people in the office area in real time. If human activities are detected, the current lighting status is maintained. If no human activities are detected within 15-30 minutes, the smart lighting fixtures automatically adjust the brightness to an energy-saving state of about 30%. When human activities are detected again, the normal office brightness is restored.

[0098] 3. Meeting mode:

[0099] When the conference room is booked and 10-15 minutes before the meeting starts, the central control unit automatically triggers the conference mode according to the reservation information, and the brightness of the intelligent lighting fixtures is adjusted to 80%-100% to provide sufficient lighting;

[0100] The light sensor monitors the outdoor light conditions. If the outdoor light is too strong and the meeting requires projection demonstration, the curtain motor control unit will close all the curtains after receiving the command. If projection is not required and the outdoor light is appropriate (the light intensity is between 2000-5000 lux), the curtains can be opened appropriately, generally maintaining an opening degree of 20%-40%;

[0101] During a meeting, the human body sensing sensor detects human activities in real time. If it detects that there is no activity in the meeting room for more than 5-10 minutes, the smart lighting fixtures will automatically adjust the brightness to an energy-saving state of about 50%. When a person is detected entering again, the brightness will be restored to the meeting level.

[0102] 4. Leisure mode:

[0103] When people enter the leisure area (such as the rest area in the office area), they can manually switch to the leisure mode through the smart control panel unit or the mobile phone APP control unit. The light sensor monitors the indoor and outdoor lighting conditions. If the outdoor light is soft (light intensity is 1000-3000lux) and the weather is clear, the brightness of the smart lighting fixtures is set at 30%-40%, the curtains are opened wide, maintaining an opening degree of 80%-100%, introducing natural light and providing a good field of vision; if the outdoor light is too strong or it is cloudy, the brightness of the lamps is adjusted to 40%-50%, and the curtains are adjusted to an opening degree of 50%-80% according to actual conditions to balance the indoor light.

[0104] 5. Off-duty mode (taking 17:00-18:00 in the evening as an example)

[0105] The central control unit triggers the off-duty mode according to the preset off-duty time. The brightness of the intelligent lighting fixtures in the office area is gradually adjusted to 20%-30%, retaining only the basic lighting brightness to meet the needs of security patrols, etc. The lighting brightness of public corridors and elevator halls is reduced to 30%-40%, and the lighting brightness of the underground parking lot is adjusted to 30%-40%;

[0106] The meteorological linkage unit obtains the current weather information. If it is predicted that there will be rain or strong winds at night, the curtains in areas with curtains, such as office areas, can be closed to protect indoor facilities. If the weather is good, the curtains in open corridors can be adjusted to a suitable angle according to safety and aesthetic requirements, generally maintaining an opening degree of 20%-40%;

[0107] Human sensing sensors work continuously in each area. If a person is detected entering a specific area (such as a security patrol), the lighting brightness in the corresponding area is increased to the normal traffic brightness, and the brightness is restored to the off-duty mode after the person leaves.

[0108] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A smart lighting control system based on the Internet of Things, including a perception layer, an application layer and a device layer, characterized in that: The perception layer includes a light sensor unit, a human body sensing sensor unit and a meteorological linkage unit. The light sensor unit is distributed in various areas of the building to monitor light intensity. The human body sensing sensor unit is installed in a public area to detect human activities. The meteorological linkage unit obtains real-time weather forecast information through the network. The application layer includes a dimming mode and scene setting unit, an intelligent control panel unit, a central control unit and a mobile phone APP control unit. The dimming mode and scene setting unit calculates the lighting brightness and the curtain opening and closing angle according to different modes. The intelligent control panel unit provides local convenient operation, the central control unit performs global unified management, and the mobile phone APP control unit realizes remote control; The equipment layer includes an intelligent lighting fixture unit and a curtain motor control unit. The intelligent lighting fixture unit provides lighting and can adjust brightness and color temperature. The curtain motor control unit controls the automatic opening and closing of the curtain.

2. The smart lighting control system based on the Internet of Things as claimed in claim 1, characterized in that: The dimming mode and scene setting unit include office mode, working mode, off-duty mode, meeting mode, and leisure mode. The lighting brightness and curtain opening and closing angles of each mode are different due to different areas, different personnel activities, and different lighting.

3. The smart lighting control system based on the Internet of Things as claimed in claim 2, characterized in that: The lighting brightness and curtain opening and closing angle are calculated by the lighting brightness adjustment algorithm and the curtain opening and closing angle adjustment algorithm respectively to give specific adjustment values, and the lighting brightness adjustment algorithm and the curtain opening and closing angle adjustment algorithm are specifically as follows: (I) Lighting brightness adjustment algorithm Let L current is the current lighting brightness, L target is the target illumination brightness, S illumintion is the light intensity measured by the light sensor, T time W is the duration of no human activity on the human body sensor. weather A is the weather condition obtained by the meteorological linkage unit. area is the area type. The basic target brightness L is determined according to the area type and the mode of the current time. base ; When the light intensity S illumintion Greater than a certain threshold S high , and the area has windows: When the light intensity S illumintion Less than a certain threshold S low hour: Where k is the compensation coefficient, which means that the darker the light, the greater the brightness increase; If the human body sensor detects human activity, the current brightness, i.e. L target =L min ; If the human body sensor has no human activity for time T time Exceeding the set time threshold T max , (II) Curtain opening and closing angle adjustment algorithm Let C current is the current curtain opening and closing angle, C target is the target curtain opening and closing angle, S illumintion is the light intensity, W weather For weather conditions, A area is the area type, M meeting It is the conference mode flag. The basic target opening and closing angle C is determined according to the area type and the mode of the current time. base ; When the light intensity S illumintion Greater than a certain threshold S higt , when the area has windows and is not in conference mode: When the light intensity S illumintion Less than a certain threshold S low , and the area has windows: Where n is the compensation coefficient, which means the darker the light, the wider the curtains open; When in conference mode and projection is required, C target = 0, when in conference mode and projection is not required and the lighting is appropriate (S low ≤S illumintion ≤S higt ) target The basic opening and closing angle.

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