Fan intelligent adjustment control module and method

Abstract

The present invention relates to a fan intelligent adjustment control module and method, which uses a human body sensing element to sense whether a user enters within a certain range, starts the fan to blow air if a user enters, and stops the fan to blow air if no user enters, thereby improving the energy saving effect. At the same time, the present invention uses a position sensor to detect the user's position, and adjusts the fan blowing direction according to the movement of the user's position, so that the fan always follows the user and blows air to the user. This solves the technical problem that when the user walks back and forth within a certain range, the fan will not follow the user's head shaking, thereby causing the fan to blow air in vain and waste energy, and the user cannot blow air most of the time.

Description

Technical Field

[0001] The invention belongs to the technical field of fans, and in particular relates to an intelligent adjustment and control module for a fan. Background Art

[0002] Fans are commonly used cooling devices in daily life and work. When the weather is hot, people usually use fans to cool down to get a comfortable feeling. However, in many workplaces, users need to move back and forth within a certain range, while the cooling range of fans is relatively narrow. Therefore, many times the fans are blowing in the air while users endure the heat.

[0003] Although the fan has a shaking function, the current shaking function of the fan is to shake back and forth according to a specific pattern. Although it can increase the cooling range, it cannot actually solve the problem that the user cannot get any air most of the time when walking back and forth within a certain range to work. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a fan intelligent adjustment control module to solve the technical problem that when a user walks back and forth within a certain range, the fan will not follow the user's head shake, thereby causing the fan to waste energy and the user to not get any wind most of the time.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a fan intelligent adjustment control module, including at least one human sensing element for detecting whether there is a user in the blowing area, at least one position sensor for detecting the user's position, a controller electrically connected to the human sensing element and the position sensor, and a power supply. The controller is electrically connected to the fan main motor through a first drive circuit, and the controller is electrically connected to the fan shaking motor through a second drive circuit. A main switch is connected between the power supply and the controller, the main motor, and the shaking motor.

[0006] As a preferred solution, the position sensor includes an infrared light transmitter and two infrared light receivers. The infrared light transmitter is fixedly mounted on the top of the fan rear cover, and the two infrared light receivers are symmetrically fixedly mounted on both sides of the fan rear cover.

[0007] As a preferred solution, the human body sensing element is a passive infrared sensor, and the infrared wavelength range sensed by the human body sensing element is different from the infrared wavelength range used by the position sensor.

[0008] As a preferred solution, the human sensing element is fixedly arranged in the control box of the fan, and a window facing the human sensing element is opened on the front of the control box. The window is covered with a filter, which is a convex lens, and the human sensing element faces the filter.

[0009] As a preferred solution, the power input terminal of the position sensor is connected to the power supply through an electronic switch, and the control terminal of the electronic switch is electrically connected to the controller and is controlled by the controller.

[0010] As a preferred solution, the first drive circuit is a MOS tube, and the second drive circuit is a six-arm full-bridge drive circuit composed of six MOS tubes.

[0011] The technical problem further to be solved by the present invention is: an intelligent adjustment and control method for a fan, which solves the technical problem that when a user walks back and forth within a certain range, the fan will not follow the user's head shake, thereby causing the fan to waste energy by blowing in vain and the user to not get any wind most of the time.

[0012] In order to solve the above technical problems, the technical solution adopted by the present invention is: a fan intelligent adjustment control method, using the above fan intelligent adjustment control module to perform the following specific steps:

[0013] S1, turn on the power and close the main switch;

[0014] S2, using a human body sensing element to detect whether there is a user within a certain range, and sending the detection result to a controller when a user is detected;

[0015] S3, the controller controls the first drive circuit to close, starts the main motor, and the main motor drives the fan blades to rotate;

[0016] S4. Use a position sensor to detect the user's position and send it to the controller. The controller controls the oscillating motor to rotate through the second driving circuit according to the user's position information. The oscillating motor turns the fan's blowing direction toward the user.

[0017] As a preferred solution, steps S2 and S4 are performed simultaneously.

[0018] The beneficial effects of the present invention are as follows: the present invention uses a human body sensing element to sense whether a user enters within a certain range, starts the fan to blow air if a user enters, and stops the fan to blow air if no user enters, thereby improving the energy saving effect. At the same time, the present invention uses a position sensor to detect the user's position, and adjusts the fan blowing direction according to the movement of the user's position, so that the fan always follows the user and blows air to the user. This solves the technical problem that when the user moves back and forth within a certain range, the fan will not follow the user's head shaking, thereby causing the fan to blow air in vain and waste energy, and the user cannot blow air most of the time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0020] Figure 1It is a schematic diagram of the assembly structure of the fan intelligent adjustment control module of the present invention on the fan;

[0021] Figure 2 It is a schematic diagram of the assembly structure of the human body sensing element on the fan;

[0022] Figure 3 This is the working principle diagram of our side;

[0023] Figure 1~Figure 3 In: 1. Human body sensing element, 2. Position sensor, 2a. Infrared light transmitter, 2b. Infrared light receiver, 3. Controller, 4. Power supply, 5. First drive circuit, 6. Main motor, 7. Second drive circuit, 8. Shaking motor, 9. Main switch, 10. Fan back cover, 11. Control box, 12. Window, 13. Filter, 14. Electronic switch. DETAILED DESCRIPTION

[0024] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] like Figure 1~Figure 3 The fan intelligent adjustment control module shown includes a human sensing element 1 for detecting whether there is a user in the blowing area, a position sensor 2 for detecting the user's position, a controller 3 electrically connected to the human sensing element 1 and the position sensor 2, and a power supply 4. The controller 3 can be any one of a single-chip microcomputer and a computer. The controller 3 is electrically connected to the fan main motor 6 through a first drive circuit 5. The first drive circuit 5 preferably uses a MOS tube. The controller 3 is electrically connected to the fan oscillating motor 8 through a second drive circuit 7. The second drive circuit 7 preferably uses a six-arm full-bridge drive circuit composed of six MOS tubes to achieve the controller 3 to quickly control the rotation direction of the oscillating motor 8. A main switch 9 is connected between the power supply 4 and the controller 3, the main motor 6, and the oscillating motor 8. One end of the main switch 9 is connected to the positive pole of the power supply 4. The controller 3, the main motor 6, the oscillating motor 8, the human sensing element 1, and the position sensor 2 are all connected in parallel to the other end of the main switch 9.

[0026] In this embodiment, the position sensor 2 includes an infrared light transmitter 2a and two infrared light receivers 2b. The infrared light transmitter 2a is fixedly mounted on the top of the fan rear cover 10. The two infrared light receivers 2b are symmetrically fixedly mounted on both sides of the fan rear cover 10. The distance between the two infrared light receivers 2b and the infrared light transmitter 2a is equal. When the user is located on the symmetry axis of the two infrared light receivers 2b, the time when the two infrared light receivers 2b receive the infrared light reflected by the human body is the same. When the user deviates from the symmetry axis of the two infrared light receivers 2b by a certain distance, the time when the two infrared light receivers 2b receive the infrared light reflected by the human body will be different. The controller 3 can calculate the deviation direction and deviation angle of the human body according to the time difference of the two infrared light receivers 2b receiving the signal, and then control the shaking motor 8 to rotate a certain angle, so that the blowing direction of the fan follows the deviation direction of the user until the time difference of the two infrared light receivers 2b receiving the signal again is equal.

[0027] In practical applications, the position sensor 2 may also use an ultrasonic generator to replace the infrared light transmitter 2a, and use two ultrasonic receivers to replace the two infrared light receivers.

[0028] The human sensing element 1 in this embodiment is preferably a passive infrared sensor. The infrared wavelength range sensed by the human sensing element 1 is different from the infrared wavelength range used by the position sensor 2 to avoid mutual interference between the human sensing element 1 and the position sensor 2.

[0029] In practical applications, the human body sensing element 1 may also adopt a video image recognition module.

[0030] In this embodiment, the human sensing element 1 is fixedly arranged in the control box 11 of the fan, and a window 12 facing the human sensing element 1 is provided on the front of the control box 11, and a filter 13 is covered on the window 12, and the filter 12 is a convex lens, and the human sensing element 1 faces the filter 13. When the infrared rays emitted by the human body pass through the filter 12 and irradiate the human sensing element 1, the human sensing element 1 will send a signal to the controller 3, and the controller 3 can control the main motor 6 to rotate according to the signal to drive the fan blades to rotate, and the fan starts to blow air.

[0031] In order to save electric energy, in this embodiment, the power input end of the position sensor 2 is connected to the power supply 4 through an electronic switch 14, and the control end of the electronic switch 14 is electrically connected to the controller 3 and controlled by the controller 3. In this way, the controller 3 can control the electronic switch 14 to be intermittently turned on, so that the position of the human body can be detected once each time the electronic switch 14 is turned on. By comparing the detection results each time, the controller 3 can simulate the direction of human body movement, thereby controlling the electric fan to shake its head in time, follow the movement of the human body, and blow air to the human body at any time. The electronic switch 14 in this embodiment is a MOS tube or a triode.

[0032] The fan intelligent adjustment control method based on the above fan intelligent adjustment control module includes the following specific steps:

[0033] S1, turn on the power, close the main switch 9, and the human body sensing element 1 and the controller 3 are powered and start working;

[0034] S2, using the human body sensing element 1 to detect whether there is a user within a certain range, and sending the detection result to the controller 3 when the user is detected;

[0035] S3, after receiving the signal sent by the human body sensing element 1, the controller 3 controls the first driving circuit 5 to close and start the main motor 6, and the main motor 6 drives the fan blades to rotate to realize the self-starting of the fan;

[0036] S4, the controller 3 closes the electronic switch 14 to energize the position sensor 2, and the position sensor 2 detects the user's position and sends it to the controller 3. The controller 3 controls the rotation of the oscillating motor 8 through the second drive circuit 7 according to the user's position information. The oscillating motor 8 drives the fan to oscillate and turn the fan's blowing direction toward the user.

[0037] As a more preferred solution, in step S1, the controller 3 closes the electronic switch 14 after being powered on, so that the position sensor 2 enters the working state, and steps S2 and S4 are performed synchronously.

[0038] The above embodiments are only illustrative of the principles and effects of the invention, as well as some embodiments of its application, and are not intended to limit the invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the invention, and all of these belong to the protection scope of the invention.

Claims

1. Fan intelligent adjustment control module, characterized in that: The device comprises at least one human body sensing element (1) for detecting whether a user is present in a blowing area, at least one position sensor (2) for detecting a user's position, a controller (3) electrically connected to the human body sensing element (1) and the position sensor (2), and a power supply (4); the controller (3) is electrically connected to a fan main motor (6) via a first drive circuit (5); the controller (3) is electrically connected to a fan oscillating motor (8) via a second drive circuit (7); and a main switch (9) is connected between the power supply (4) and the controller (3), the main motor (6), and the oscillating motor (8); The position sensor (2) comprises an infrared light transmitter (2a) and two infrared light receivers (2b), wherein the infrared light transmitter (2a) is fixedly mounted on the top of the fan rear cover (10), and the two infrared light receivers (2b) are symmetrically fixedly mounted on both sides of the fan rear cover (10); The human body sensing element (1) is a passive infrared sensor, and the infrared wavelength range sensed by the human body sensing element (1) is different from the infrared wavelength range used by the position sensor (2); The human body sensing element (1) is fixedly arranged in a control box (11) of the fan; a window (12) facing the human body sensing element (1) is provided on the front of the control box (11); a filter (13) is covered on the window (12); the filter (13) is a convex lens; and the human body sensing element (1) faces the filter (13); The power input end of the position sensor (2) is connected to the power source (4) via an electronic switch (14), and the control end of the electronic switch (14) is electrically connected to the controller (3) and is controlled by the controller (3); The first drive circuit (5) is a MOS tube, and the second drive circuit (7) is a six-arm full-bridge drive circuit composed of six MOS tubes.

2. A fan intelligent adjustment control method based on the fan intelligent adjustment control module of claim 1, characterized in that: The specific steps include: S1, turn on the power and close the main switch; S2, using a human body sensing element to detect whether there is a user within a certain range, and when a user is detected, sending the detection result to a controller (3); S3, the controller (3) controls the first drive circuit (5) to close, starts the main motor (6), and the main motor (6) drives the blades of the fan to rotate; S4. Using a position sensor to detect the user's position and sending it to the controller (3), the controller (3) controls the oscillating motor (8) to rotate through the second drive circuit (7) according to the user's position information, and the oscillating motor (8) turns the fan's blowing direction toward the user.

3. The fan intelligent adjustment control method according to claim 2, characterized in that: Steps S2 and S4 are performed simultaneously.

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