A method for controlling a concentrating louver that optimizes natural lighting

Abstract

The application discloses a light-gathering louver control method capable of optimizing natural lighting. Firstly, real-time azimuth angle and high angle data sent by a sun position sensor, real-time light intensity data sent by a direct light intensity sensor and real-time light intensity data sent by a scattered light intensity sensor are acquired. By comparing the direct light intensity data with a preset value and the scattered light intensity data with the preset value, it is determined whether the outdoor weather is sunny, cloudy or overcast. Then, according to the weather, the light-gathering louver is adjusted to an angle, which is an optimal value or forms a function relationship with real-time angle data of the sun height angle. Through flexible control of the angle of the louver, the method can realize dynamic balance of building energy production and lighting.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic control, and particularly relates to a method for controlling a concentrating louver that can optimize natural daylighting. Background Art

[0002] With the improvement of living standards, the demand for the quality of the indoor light environment is also constantly increasing. Although traditional louvers can block the glare problem caused by direct sunlight indoors, they reduce the overall indoor environmental illuminance, and indoor lighting is needed to supplement and regulate the indoor light environment, resulting in energy waste. Solar energy utilization is a green channel to solve energy shortages. Photovoltaic louvers have both solar power generation and indoor daylighting functions. Their drawback is that when pursuing indoor daylighting, it will affect the solar power generation efficiency, and improving the solar power generation efficiency often sacrifices the indoor daylighting effect. It is easy to顾此失彼 between their solar energy demand and daylighting demand, and it is difficult to grasp the balance relationship between the two. Summary of the Invention

[0003] The purpose of the present invention is to provide a method for controlling a concentrating louver that can optimize natural daylighting, which can achieve the dynamic balance between solar energy utilization and daylighting.

[0004] To achieve the above purpose, a method for controlling a concentrating louver that can optimize natural daylighting according to the present invention includes:

[0005] (1) Obtain sensor data, where the sensor data includes the azimuth and altitude data collected by a solar position sensor, the direct irradiance data collected by a direct radiation sensor, and the diffuse irradiance data sent by a diffuse radiation sensor;

[0006] (2) If the irradiance data of the direct radiation sensor is less than the first preset value K1, it is determined that the outdoor environment is a pure overcast day, and the louver control mode adopts the daylighting mode; at this time, if the diffuse irradiance data is less than the second preset value K2, it is determined that the daylighting is insufficient, and the louver angle is a certain fixed optimal value a; at this time, if the diffuse irradiance data is between the second preset value K2 and the third preset value K3, it is determined that the daylighting is appropriate, and the louver control angle and the diffuse irradiance sensor data satisfy the function relationship f1: y = 0.0058x2 - 1.8282x + 1N85, where y is the louver control angle and x is the outdoor diffuse radiation irradiance, 100 < x < 160; at this time, if the diffuse irradiance data is greater than the third preset value K3, it is determined that the daylighting is excessive, and the louver angle is a certain fixed optimal value b;

[0007] (3) If the data of the direct radiation sensor is greater than the first preset value K1 and the data of the diffuse radiation sensor is greater than the second preset value K2, it is determined that the outdoor environment is a sunny day, and the louver control mode is the power generation mode, and the louver control angle and the solar position sensor data satisfy the function relationship f2: Where y is the louver adjustment angle, x is the solar azimuth angle, and z is the solar altitude angle;

[0008] (4) If the direct radiation sensor data is greater than the first preset value K1 but less than the fourth preset value K4, and the diffused light illuminance data is less than the second preset value K2, then the outdoor environment is determined to be cloudy, the louver control mode is the light-collecting mode, and the louver control angle is fixed at a certain optimal value a.

[0009] (5) If the direct radiation sensor data is greater than K4 and less than K5, and the diffused light illuminance is less than K2, then the outdoor environment is determined to be a low-cloud environment, the louver control mode is the light-collecting mode, and the louver control angle and the solar position sensor data satisfy the functional relationship f3: y = x - 16, where y is the louver opening angle and x is the solar equivalent altitude angle.

[0010] Furthermore, in step (5), if the direct radiation sensor data is greater than K5 and the diffused light illuminance is less than K2, then the outdoor environment is determined to be a sunny environment, the louver control mode is the production mode, and the louver control angle and the solar position sensor data satisfy the functional relationship f2.

[0011] Furthermore, K1, associated with the direct radiation sensor, is set to 0, and K4 is set to 3 W / m. 2 K5 is 7W / m 2 The value of K2 associated with the scattered radiation sensor is 100 W / m. 2 K3 is set to 160W / m 2 .

[0012] The beneficial effects of this invention are as follows: The light-concentrating venetian blind control method of this invention can determine whether the outdoor weather is sunny, cloudy, or overcast based on data sent by direct light intensity sensors and diffused light intensity sensors. Based on different weather conditions and the real-time data from the two sensors, it determines whether to use a light-gathering mode or a power-generating mode. In light-gathering mode, indoor lighting is primarily considered; in power-generating mode, solar power generation is primarily considered, with lighting taking a secondary role. The tilt angle of the venetian blinds is adjusted according to these two modes. Sometimes the tilt angle is fixed at an optimal value, and sometimes it varies functionally with changes in the solar position sensor data. Compared to existing technologies, this method adjusts the venetian blind angle according to different situations and time periods, effectively achieving a dynamic balance between power generation and light gathering. Attached Figure Description

[0013] Figure 1 This is a flowchart of the light-concentrating venetian blind control method for optimizing natural lighting according to the present invention;

[0014] Figure 2 A schematic diagram showing the direct and diffused light received by a focusing venetian blind; Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] The solar-concentrating louver used in this method is based on a prior patent application, application number 202211119066, entitled "A Transmissive Medium-Magnification Solar Concentrating Integrated Window." For the specific structure of the louver, please refer to that application document. The integrated window is characterized by its efficient solar energy collection using solar-concentrating technology. This technology is integrated into the building facade, tracking the sun to collect solar energy. The generated electricity and heat can be utilized by the building, while simultaneously creating a dynamic indoor lighting environment. When this device is integrated into building curtain walls or windows, the gaps created by the modules tracking the sun allow light to enter the interior, providing necessary natural lighting.

[0017] In this embodiment, the louvers are louvered concentrator modules. A data processor can determine the louver adjustment angle based on data obtained from direct radiation sensors, diffused radiation sensors, and solar position sensors to adapt to both lighting and power generation needs. Lighting refers to meeting indoor illumination requirements, while power generation refers to generating solar power through the louvered concentrator modules.

[0018] like Figure 1 As shown, a method for controlling light-concentrating venetian blinds to optimize natural lighting includes the following steps:

[0019] (1) Acquiring sensor data: There are three types of sensors: direct radiation sensor, diffused radiation sensor, and solar position sensor. The corresponding data collected are direct light illuminance data, diffused light illuminance data, and solar azimuth and elevation angle data, respectively. In this embodiment, the louvers concentrate direct light 1 for energy production and diffused light 2 is transmitted and reflected for light collection, such as... Figure 2 As shown.

[0020] (2) If the illuminance data of the direct radiation sensor is less than the first preset value K1, K1 is assigned the value 0W / m. 2 If the outdoor environment is determined to be purely cloudy, the louver control mode will switch to daylighting mode. Specifically, in a purely cloudy environment, if the diffused light illuminance data is less than the second preset value K2, K2 will be assigned a value of 100W / m². 2 If the light intensity is insufficient, the louver angle is set to a fixed optimal value 'a', which is 90 degrees. If the diffused light illuminance data falls between the second preset value K2 and the third preset value K3, K3 is set to 160 W / m². 2 If the lighting is deemed adequate, then the relationship between the louver adjustment angle and the diffused light illuminance sensor data satisfies the functional relationship f1: y = 0.0058x. 2-1.8282x+185. If the diffused light illuminance data is greater than the third preset value K3, it is determined to be excessive lighting, and the louver angle is fixed at a certain optimal value b, with b assigned a value of 40 degrees.

[0021] (3) If the direct radiation sensor data is greater than the first preset value K1 and the diffuse radiation sensor data is greater than the second preset value K2, then the outdoor environment is determined to be sunny, and the louver control mode is set to the production mode. The production mode uses photovoltaic elements on the louvers to generate solar power. The louver control angle and the solar position sensor data satisfy the functional relationship f2: Where y represents the louver adjustment angle, and x represents the solar azimuth and altitude angles. As the solar azimuth angle constantly changes, the louver adjustment angle also constantly changes to maximize power generation while simultaneously ensuring indoor lighting.

[0022] (4) If the direct radiation sensor data is greater than the first preset value K1 and less than the fourth preset value K4, K4 is assigned the value 3W / m. 2 If the diffused light illuminance data is less than the second preset value K2, the outdoor environment is determined to be cloudy, and the louver control mode is set to daylighting mode. Direct light has a lesser effect on indoor light control than diffused light, so the control angle of diffused light is the primary factor. The louver control angle is fixed at a certain optimal value 'a', which is assigned a value of 90 degrees.

[0023] (5) If the direct radiation sensor data is greater than K4 and less than K5, and the diffuse illuminance is less than K2, then K5 is assigned a value of 7 W / m. 2 The outdoor environment is mostly cloudless, and the louver control mode is set to daylighting mode. In this condition, direct sunlight has a greater effect on indoor light control than diffused light; therefore, the adjustment angle based on direct sunlight is primary. The louver control angle and the solar position sensor data satisfy the functional relationship f3: y = x - 16. If the direct radiation sensor data is greater than K5, and the diffused light illuminance is less than K2, K5 is assigned a value of 7 W / m². 2 The outdoor environment is sunny, the louver control mode is the production mode, and the louver control angle and the solar position sensor data satisfy the functional relationship f2.

[0024] In summary, this invention establishes a data model and, based on acquired sensor data, including outdoor direct illuminance sensor data, diffuse illuminance sensor data, and solar position sensor data (elevation and azimuth angles), evaluates whether the control mode prioritizes energy production or natural lighting. Furthermore, based on the outdoor direct illuminance sensor data, diffuse illuminance sensor data, and solar elevation and azimuth angle sensor data, it determines the optimal adjustment angle of the louvers under the corresponding conditions, thereby achieving intelligent control of the transmissive louvers and achieving a dynamic balance between building energy production and natural lighting.

[0025] Compared to existing technologies, this method is more flexible in design. It uses direct radiation sensors and diffuse radiation sensors as input conditions. When the set values ​​are met, it can be switched to a lighting mode or a production mode. It can be dynamically adjusted by setting the optimal angle of the blinds or by forming a functional relationship with the data from the solar position sensor, thereby achieving optimal configuration of production capacity and indoor lighting.

[0026] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes that can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention are all within the protection scope of the claims of the present invention.

Claims

1. A method for controlling light-concentrating venetian blinds to optimize natural lighting, characterized in that, Including: (1) Obtain sensor data, where the sensor data includes azimuth and altitude angle data collected by a solar position sensor, direct irradiance data collected by a direct radiation sensor, and diffuse irradiance data sent by a diffuse radiation sensor; (2) If the irradiance data of the direct radiation sensor is less than the first preset value K1, it is determined that the outdoor environment is a pure overcast day, and the louver control mode adopts the daylighting mode. At this time, if the diffuse irradiance data is less than the second preset value K2, it is determined that the daylighting is insufficient, and the louver angle is a certain fixed optimal value a; at this time, if the diffuse irradiance data is between the second preset value K2 and the third preset value K3, it is determined that the daylighting is appropriate, and the louver control angle and the diffuse irradiance sensor data satisfy the function relationship f1: y = 0.0058x2 - 1.8282x + 185, where y is the louver control angle and x is the outdoor diffuse radiation irradiance, 100 < x < 160; at this time, if the diffuse irradiance data is greater than the third preset value K3, it is determined that the daylighting is excessive, and the louver angle is a certain fixed optimal value b; (3) If the direct radiation sensor data is greater than the first preset value K1 and the diffused radiation sensor data is greater than the second preset value K2, then the outdoor environment is determined to be sunny, the louver control mode is the production mode, and the louver control angle and the solar position sensor data satisfy the functional relationship f2: Where y is the louver adjustment angle, x is the solar azimuth angle, and z is the solar altitude angle; (4) If the data of the direct radiation sensor is greater than the first preset value K1 but less than the fourth preset value K4, and the diffuse irradiance data is less than the second preset value K2, it is determined that the outdoor environment is a cloudy day, the louver control mode is the daylighting mode, and the louver control angle is a certain fixed optimal value a; (5) If the data of the direct radiation sensor is greater than K4 and less than K5, it is determined that the outdoor environment is a partly cloudy day, and the diffuse irradiance is less than K2. The louver control mode is the daylighting mode, and the louver control angle and the solar position sensor data satisfy the function relationship f3: y = x - 16, where y is the louver opening angle and x is the solar equivalent altitude angle.

2. The method for controlling a light-concentrating venetian blind that optimizes natural lighting according to claim 1, characterized in that, In step (5), if the data of the direct radiation sensor is greater than K5 and the diffuse irradiance is less than K2, it is determined that the outdoor environment is a sunny day, the louver control mode is the power generation mode, and the louver control angle and the solar position sensor data satisfy the function relationship f2.

3. The method for controlling a light-concentrating venetian blind that optimizes natural lighting according to claim 1, characterized in that, For the direct radiation sensor, K1 is set to 0, and K4 is set to 3 W / m. 2 K5 is 7W / m 2 The value of K2 associated with the scattered radiation sensor is 100 W / m. 2 K3 is set to 160W / m 2 .

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