Intelligent air guide system and control method

Abstract

The invention discloses an intelligent air guide system and a control method. The intelligent air guide system comprises a wind speed and direction sensor, a controller, a rotary stepping motor and a vertical air guide plate. Specifically, wind speed and wind direction data of outdoor natural wind power are collected by a wind speed and wind direction sensor, a control signal is generated by a controller through an intelligent control algorithm, and a rotary stepping motor is driven to adjust the deviation angle of a vertical wind guide plate according to the control signal so as to adapt to incoming wind and achieve wind guide. The angle of the air deflector is adjusted in real time according to the wind speed and direction through an intelligent control algorithm, the structure is simple, cost is low, and the application range is wide.

Description

Technical Field

[0001] The present invention relates to the field of automatic control technology, and in particular to an intelligent air guide system and a control method. Background Art

[0002] The use of natural ventilation is a very old technology for improving the environment in the field of construction. Under the support of today's sustainable development concept, natural ventilation is regarded as one of the important technologies for the construction industry to achieve green and sustainable development. On the one hand, the use of natural ventilation to bring relatively cool outdoor air into the room to lower the indoor temperature and discharge indoor heat and moisture to the outside can improve the comfort of the indoor thermal environment in summer; secondly, through natural ventilation, the dirty air in the room can be discharged to the outside to improve the indoor air quality. It can be seen that natural ventilation is an important measure to improve the comfort and health of the indoor environment. In addition, in some high-heat-producing rooms, such as substations, industrial plants, workshops, etc., ventilation is usually used to quickly discharge heat to ensure the normal operation of indoor machinery and equipment. However, the efficiency of natural ventilation is affected by many factors, such as: the surrounding environment of the building; the outdoor wind speed is high and low, the wind direction is changeable; the direction of window opening, the indoor air flow demand path, etc.

[0003] For building ventilation, when the wind direction projection angle (the angle between the wind direction and the normal direction of the vent) is 0°, that is, when the wind is incident, the air volume entering the vent is the largest, the ventilation resistance coefficient is the smallest, and the ventilation efficiency is the highest. As the wind direction projection angle increases and the wind direction becomes more biased, the indoor ventilation effect becomes worse. When the incidence exceeds 60°, the indoor wind speed is only 1 / 2 of that at normal incidence. When the wind is biased and taken into the room, the indoor airflow path will also deviate to the corner instead of the main demand area, and the actual utilization efficiency is extremely poor. Therefore, how to introduce wind with different wind direction projection angles into the room is a practical need for natural ventilation utilization and is also a problem currently faced. Summary of the invention

[0004] In view of the above problems, the present invention provides an intelligent wind guiding system and control method for introducing wind from different directions into the room, enhancing the utilization efficiency of natural ventilation and improving the indoor air flow distribution.

[0005] The technical solution of the present invention is: an intelligent wind guide system, including a wind speed and direction sensor, a controller, a rotary stepping motor and a vertical wind guide plate, The upper end and the lower end of the vertical air guide plate are respectively mounted on the guide rails. The wind speed and direction sensor is connected to a controller, and the controller controls the vertical air guide plate by rotating a stepping motor.

[0006] The vertical air guide plate includes a plurality of blades with the same width, and the height of the blades is much greater than the width.

[0007] The blades are connected to each other by chains, and the chains are driven to rotate by a rotary stepping motor.

[0008] A rotary stepper motor is installed at the end of each blade, and all the rotary stepper motors are driven to rotate by the same signal or driven individually by different signals.

[0009] The vertical air guide plate is rectangular or shuttle-shaped; the material of the vertical air guide plate is a metal plate, a PVC plate or a wooden plate.

[0010] The vertical air guide plate is provided with openings.

[0011] The speed and wind direction sensor has an abnormal alarm function. When a fault occurs, the controller automatically switches to a preset safety mode, which includes fixing the angle of the vertical air guide plate or shutting down the selected stepping motor.

[0012] The controller uses an intelligent control algorithm based on the input wind speed and direction sensor signals to output corresponding rotation angle signals to feed the rotary stepper motor. The intelligent control algorithm is: Wind speed and direction data sampling, sampling rate S Set to any integer between 1 and 60s; Perform statistical analysis on the wind speed data within M minutes to obtain the maximum value and average value, where M is set to any value between 5min and 60min; Determination steps Check whether the maximum value is greater than or equal to the limited maximum value Vmax; if it is judged as "yes", set the motor deflection angle i =90°; if the judgment is "No", go to the next process; wherein Vmax is set according to the wind protection requirements; Determination steps Is the average value less than or equal to Vmin? If it is judged as "yes", the motor deflection angle is set θ= 0°; if the judgment is "No", enter the next process; wherein Vmin is set according to the static wind speed; The wind direction data within M minutes are analyzed to obtain the wind direction projection angle corresponding to the maximum wind direction frequency, and then rounded to an integer multiple of 15° and set to α， That is -60°, -45°, -30°, -15°, 0°, 15°, 30°, 45° or 60°; Projection angle according to wind direction α Set the motor deflection angle i ; i The value range is [α - β , α + d ],in, β 0° or 15° or 30° or 45°; d 0° or 15°; β and d The specific value is determined according to the indoor airflow path requirements; Output motor deflection angle i The rotary stepper motor is fed and driven by the rotary stepper motor to adjust the deflection angle of the vertical air guide plate.

[0013] step Middle, -60°≤ i ≤60°, when it exceeds this range, set the motor deflection angle to 0°.

[0014] A control method for an intelligent wind guide system, comprising: the wind speed and direction sensor 1 collects wind speed and direction data of outdoor natural wind force, and generates a rotation angle signal through intelligent judgment by an intelligent control algorithm in a controller 2, wherein the rotation angle signal is at least from -45° to 45°, with a step length of 15°; The rotary stepping motor 3 receives the rotation signal output by the controller 2 and adjusts the deflection angle of the vertical air guide plate 4 .

[0015] In operation, the present invention uses an intelligent control algorithm to automatically adjust the angle of the vertical wind guide plate according to the outdoor wind speed and wind direction data. The vertical wind guide plate guides the natural wind in the windward direction into the room, which can effectively improve the actual ventilation efficiency of the building and make full use of natural ventilation to improve indoor air quality and thermal comfort.

[0016] The invention has the advantages of simple structure, convenient manufacture and installation, and high intelligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a system block diagram of the present invention, Figure 2 is a schematic structural diagram of the vertical air guide plate in the present invention, Figure 3 It is a logic block diagram of the intelligent control algorithm in the present invention. DETAILED DESCRIPTION

[0018] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiment.

[0019] like Figure 1-3As shown, the present invention provides an intelligent wind guide system, including a wind speed and direction sensor 1, a controller 2, a rotary stepping motor 3 and a vertical wind guide plate 4. The upper and lower ends of the vertical air guide plates 4 are respectively mounted on the guide rails 5. The wind speed and direction sensor 1 is connected to the controller 2, and the controller 2 controls the vertical air guide plate 4 through the rotating stepper motor 3. The controller 2 contains an intelligent control algorithm, which inputs the data collected by the wind speed and direction sensor 1, and generates a rotation angle signal through intelligent judgment. The rotation angle signal is at least from -45° to 45°, with a step length of 15°. In addition, the rotating stepper motor can at least realize the complete closure of the air guide plate (rotation angle of 90°); the rotating stepper motor 3 receives the rotation signal output by the controller 2 and adjusts the deflection angle of the vertical air guide plate 4.

[0020] In application, the air guide system is installed on the outside, middle or inside of the wall opening.

[0021] The vertical air guide plate 4 includes a plurality of blades with the same width, and the height of the blades is much greater than the width.

[0022] The blades are connected by a chain, and the chain is driven to rotate by a rotary stepping motor 3. This implementation case is suitable for situations where the indoor airflow path requirement is low or uncertain, and the overall control is simple and clear.

[0023] A rotary stepper motor 3 is installed at the end of each blade, and all rotary stepper motors 3 are driven to rotate by the same signal, or driven separately by different signals. In addition to guiding the outdoor airflow, this implementation can also flexibly control the indoor airflow path. This example is more effective for occasions with clear ventilation requirements.

[0024] The vertical air guide plate 4 is rectangular or shuttle-shaped; the material of the vertical air guide plate 4 is a metal plate, a PVC plate or a wooden plate; and has the ability to resist at least level 8 wind.

[0025] The vertical air guide plate 4 is provided with openings. In this way, taking into account the indoor lighting requirements, a perforated plate with a perforation rate not higher than 50% can be used.

[0026] The wind speed and direction sensor 1 can be replaced by a multi-parameter sensor (such as temperature and humidity, wind speed and direction, air quality, etc.) according to the indoor environment quality control requirements.

[0027] The wind speed and direction sensor 1 has an abnormal alarm function. When a fault occurs, the controller 2 automatically switches to a preset safety mode, and the safety mode includes shutting down the rotating stepping motor 3.

[0028] In applications, for example, insufficient power supply or power overload, it may also be due to severe pollution causing large mechanical resistance, etc. In the event of a fault, an abnormal wind speed signal is generated, and the controller automatically switches to the preset safety mode.

[0029] The safety mode includes turning off the rotary stepper motor 3 , fixing the angle of the vertical air guide plate 4 , or setting the deflection angle to 90°, and completely closing the vertical air guide plate 4 .

[0030] The controller 2 uses an intelligent control algorithm based on the input signal of the wind speed and direction sensor 1 to output a corresponding rotation angle signal to feed the rotary stepping motor 3. The intelligent control algorithm is: Wind speed and direction data sampling, sampling rate S Set to any integer between 1 and 60 seconds (the default value is 30 seconds); Perform statistical analysis on wind speed data within M minutes to obtain the maximum value and average value. M is set to any value between 5min and 60min (the default value is 10min). Determination steps Check whether the maximum value is greater than or equal to the limited maximum value Vmax; if it is judged as "yes", set the motor deflection angle i =90°; if the judgment is "No", go to the next process; Vmax is set according to the wind protection requirements (the default value is 15m / s); Determination steps Is the average value less than or equal to Vmin? If it is judged as "yes", the motor deflection angle is set θ= 0°; if the judgment is "No", enter the next process; Vmin is set according to the static wind speed (the default value is 1.5m / s); Analyze the wind direction data within M minutes to obtain the wind direction projection angle corresponding to the maximum wind direction frequency (with the window hole normal as the reference line, counterclockwise direction is positive and clockwise direction is negative), and round it to an integer multiple of 15°, set as α， That is -60°, -45°, -30°, -15°, 0°, 15°, 30°, 45° or 60°; Projection angle according to wind direction α Set the motor deflection angle i ; i The value range is [ α - β , α + d ],in, β 0° or 15° or 30° or 45°; d 0° or 15°; β and dThe specific value is determined according to the indoor airflow path requirements; Output motor deflection angle i The rotary stepper motor is fed and driven by the rotary stepper motor to adjust the deflection angle of the vertical air guide plate.

[0031] step In order to ensure effective ventilation, the temperature is limited to -60°≤ i ≤60°, when it exceeds this range, the motor deflection angle is set to 0° (default value: θ=α ).

[0032] A control method for an intelligent wind guide system, comprising: the wind speed and direction sensor 1 collects wind speed and direction data of outdoor natural wind force, and generates a rotation angle signal through intelligent judgment by an intelligent control algorithm in a controller 2, wherein the rotation angle signal is at least from -45° to 45°, with a step length of 15°; The rotary stepping motor 3 receives the rotation signal output by the controller 2 and adjusts the deflection angle of the vertical air guide plate 4 .

[0033] The present invention adopts vertical air guide plates and adjusts the air guide plates to a suitable angle, so that deflected wind can be introduced into the room, and the deflection angles of different vertical air guide plates can be determined according to the required indoor air flow path.

[0034] Outdoor wind is complex and changeable, with different dominant wind directions in different seasons and even different wind direction changes within a day. The present invention automatically adjusts the deflection angle of the air guide system according to the real-time wind direction, thereby efficiently utilizing natural ventilation.

[0035] The effect of natural ventilation also depends on the outdoor wind speed. When the outdoor wind speed is lower than 1.5m / s, the improvement effect on the indoor environment is not obvious. Therefore, when the outdoor wind speed is low, there is no need to adjust the angle of the wind deflector according to the wind direction and keep the blades perpendicular to the opening. When the outdoor wind is strong or typhoon weather conditions are too high, the wind deflector can be closed to protect the wind guide system and reduce the impact of strong winds.

[0036] The present invention focuses on the setting of various parameters in the controller (2). The parameters that can be pre-set in the controller include: sampling rate S , data analysis time range M, maximum wind speed limit Vmax, calm wind speed limit Vmin and positive and negative correction values ​​of deflection angle ( β , d ) etc. Through the flexible setting of these parameters, it is possible to adapt to different outdoor conditions and indoor airflow path requirements. For example, if the building has high wind protection requirements, a lower Vmax can be set; if the local or seasonal wind speed varies greatly, lower S and M can be set; if the indoor airflow path is in the middle area, the deflection angle can be controlled. i It is best to be between -15° and 15°.

[0037] The present invention can be used in various industrial and civil buildings where ventilation is required. It has a wide range of applications and is of great significance for achieving the green and sustainable development goals of the construction industry.

[0038] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. An intelligent air guide system, characterized in that: The invention comprises a wind speed and direction sensor (1), a controller (2), a rotary stepping motor (3) and a vertical wind guide plate (4). The upper end and the lower end of the vertical air guide plate (4) are respectively mounted on the guide rail (5). The wind speed and direction sensor (1) is connected to a controller (2), and the controller (2) controls the vertical wind guide plate (4) by rotating the stepping motor (3).

2. The intelligent air guide system according to claim 1, characterized in that: The vertical air guide plate (4) comprises a plurality of blades of the same width, wherein the height of the blades is much greater than the width.

3. The intelligent air guide system according to claim 2, characterized in that: The blades are connected by a chain, and the chain is driven to rotate by a rotary stepping motor (3).

4. The intelligent air guide system according to claim 2, characterized in that: A rotary stepper motor (3) is installed at the end of each blade, and all the rotary stepper motors (3) are driven to rotate by the same signal, or are driven individually by different signals.

5. The intelligent air guide system according to claim 3, characterized in that: The vertical air guide plate (4) is rectangular or shuttle-shaped; the material of the vertical air guide plate (4) is a metal plate, a PVC plate or a wooden plate.

6. The intelligent air guide system according to claim 1, characterized in that: The vertical air guide plate (4) is provided with openings.

7. The intelligent air guide system according to claim 1, characterized in that: The wind speed and direction sensor (1) has an abnormal alarm function. When a fault occurs, the controller (2) automatically switches to a preset safety mode, and the safety mode includes shutting down the rotating stepping motor (3).

8. The intelligent air guide system according to claim 1, characterized in that: The controller (2) uses an intelligent control algorithm based on the input signal of the wind speed and direction sensor (1) to output a corresponding rotation angle signal to feed the rotation stepping motor (3). The intelligent control algorithm is: Wind speed and direction data sampling, sampling rate S Set to any integer between 1 and 60s; Perform statistical analysis on the wind speed data within M minutes to obtain the maximum value and average value, where M is set to any value between 5min and 60min; Determination steps Is the maximum value greater than or equal to the limited maximum value Vmax? If it is judged as "yes", the motor deflection angle is set θ =90°; if it is judged as "No", go to the next process; wherein Vmax is set according to the wind protection requirements; Determination steps Is the average value less than or equal to Vmin? If it is judged as "yes", the motor deflection angle is set θ = 0°; if the judgment is "No", enter the next process; wherein Vmin is set according to the static wind speed; The wind direction data within M minutes are analyzed to obtain the wind direction projection angle corresponding to the maximum wind direction frequency, and then rounded to an integer multiple of 15° and set to α， That is -60°, -45°, -30°, -15°, 0°, 15°, 30°, 45° or 60°; Projection angle according to wind direction α Set the motor deflection angle θ ; θ The value range is [ α - β , α + δ ],in, β 0° or 15° or 30° or 45°; δ 0° or 15°; β and δ The specific value is determined according to the indoor airflow path requirements; Output motor deflection angle θ The rotary stepper motor is fed and driven by the rotary stepper motor to adjust the deflection angle of the vertical air guide plate.

9. The intelligent air guide system according to claim 1, characterized in that: step Medium, -60°≤ θ ≤60°, when it exceeds this range, set the motor deflection angle to 0°.

10. A control method for an intelligent air guide system according to any one of claims 1 to 9, characterized in that: include: The wind speed and direction sensor (1) collects wind speed and direction data of outdoor natural wind force, and generates a rotation angle signal through intelligent judgment by an intelligent control algorithm in the controller (2). The rotation angle signal ranges from at least -45° to 45°, with a step length of 15°. The rotary stepping motor (3) receives a rotation signal output by the controller (2) to adjust the deflection angle of the vertical air guide plate (4).

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