Non-contact electric appliance control device and electric appliance

Abstract

The utility model discloses a non-contact electric appliance control device, which is arranged in an electric appliance and comprises a control system, a capacitive sensing unit and a connecting lead, the capacitive sensing unit is arranged in a casing of the electric appliance and connected with the control system, and the connecting lead is connected with the control system. The capacitance sensing unit is used for generating a capacitance value signal in the process that an external sensing source of the electric appliance approaches the electric appliance; the control system is arranged on a circuit board in the machine shell, and the capacitive sensing unit is connected with the circuit board through a connecting wire. And the control system is used for receiving the capacitance value signal and forming an electric appliance control command according to the capacitance value signal. According to the non-contact electric appliance control device, non-contact operation of an electric appliance is achieved, misoperation is avoided, and user experience is good; holes are not needed, and the shell is complete and attractive.

Description

Technical Field

[0001] The utility model relates to a contactless electrical appliance control device and an electrical appliance. Background Art

[0002] Currently, the chassis rotation of fans or the movement of other electrical appliances on the market mainly rely on mechanical devices such as buttons and knobs to operate. If the above mechanical devices are set on the rotating device, it will be difficult and dangerous for users to operate the moving entity, which will not be a good user experience. In addition, buttons and knobs also need to be drilled, which increases the difficulty and cost of processing.

[0003] There is also a type of solution in the prior art, which allows the user to reach out or make other body movements when he wants to perform a certain operation, and the appliance can sense and automatically identify to respond to the user's action. One way to implement this solution is to use an infrared sensor, but it consumes high power when used, and a hole needs to be opened in the appliance housing to expose the infrared transmitter. The hole in the housing is not beautiful and is not conducive to production; the infrared probe is sensitive to light and can be triggered by mistake. Utility Model Content

[0004] In view of this, the utility model proposes a contactless electrical appliance control device, which can sense when a user's hand approaches the electrical appliance and respond accordingly, without the need to open a hole in the housing. The utility model provides the following technical solutions:

[0005] A contactless electrical appliance control device is arranged in an electrical appliance, and the contactless electrical appliance control device comprises a control system and a capacitance sensing unit, and a connecting wire, wherein: the capacitance sensing unit is arranged inside the casing of the electrical appliance and connected to the control system; the capacitance sensing unit is used to generate a capacitance value signal when an induction source outside the electrical appliance approaches the electrical appliance; the control system is arranged on a circuit board inside the casing, and the capacitance sensing unit and the circuit board are connected via a connecting wire; the control system is used to receive the capacitance value signal and form an electrical appliance control command according to the capacitance value signal.

[0006] Optionally, the capacitive sensing unit is a capacitive sensing ring.

[0007] Optionally, the capacitive induction ring is in a circular, elliptical, triangular, polygonal, or irregular shape.

[0008] Optionally, the sensing source is a human hand.

[0009] Optionally, the control system includes a capacitance sensing circuit and a controller, wherein: the controller is respectively connected to the capacitance sensing circuit and the execution device of the electrical appliance; the capacitance sensing circuit is used to receive the capacitance value signal; the controller is used to receive the capacitance value signal and make a judgment, and if the capacitance value is greater than a preset threshold, a control instruction is issued to the execution device.

[0010] Optionally, the actuator is a motor.

[0011] An electrical appliance comprises the contactless electrical appliance control device described in the utility model.

[0012] Optionally, the electrical appliance is a fan, and the housing of the electrical appliance is a housing of a fan base.

[0013] Optionally, the length of the shell is 180-220 mm, and the width is 180-220 mm; the capacitive sensing unit (2) is a circular ring, with a width of 4-7 mm, an inner diameter of 48-56 mm, and an outer diameter of 64-72 mm.

[0014] According to the technical solution of the utility model, the contactless electrical appliance control device includes a control system and a capacitive sensing unit. The capacitive sensing unit generates a capacitance value signal when an induction source outside the electrical appliance approaches the electrical appliance. The control system generates a control instruction for the electrical appliance's execution device based on the capacitance value signal. Therefore, when a user needs to operate an electrical appliance, he or she can reach close to the electrical appliance, and the electrical appliance can sense it and respond immediately. Taking a fan as an example, the specific response method can be to start the fan, or to turn on the swing head function, etc., which can be flexibly pre-set. Therefore, the implementation method of the utility model makes the operation of the electrical appliance more convenient, safer, and provides a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] For the purpose of illustration and not limitation, the present invention will now be described according to its preferred embodiments, in particular with reference to the accompanying drawings, in which:

[0016] Figure 1 It is a sensing area diagram of the contactless power supply control device according to the embodiment of the utility model;

[0017] Figure 2 It is a structural schematic diagram of a contactless power supply control device according to an embodiment of the utility model;

[0018] Figure 3 It is a simplified model of the capacitor moving plate close to the capacitor fixed plate in the embodiment of the utility model;

[0019] Figure 4 It is a schematic diagram of an induction source proximity sensing device assembly according to an embodiment of the utility model;

[0020] Figure 5The present invention is a working process logic diagram of a contactless power supply control device according to an embodiment of the present invention.

[0021] In the figure, 1. sensing area; 2. capacitive sensing unit; 3. connecting wire; 4. control system; 5. housing; 6. capacitor moving plate; 7. capacitor fixed plate; 8. moving plate approaching direction; 9. human body approaching direction; 10. outside of the device housing; 11. inside of the device housing; 12. capacitive sensing circuit; 13. controller; 14. actuator; 15. capacitive sensing ring. DETAILED DESCRIPTION

[0022] In the implementation manner of the utility model, a capacitive sensing unit is provided inside the casing of the electrical appliance to achieve non-contact operation of the electrical appliance, which is specifically described below by taking the electrical appliance as a fan as an example.

[0023] refer to Figure 1 and Figure 2 , Figure 1 This is a sensing area diagram of the contactless power supply control device according to the embodiment of the utility model. Figure 2 Schematic diagram of the structure of the contactless power supply control device of the present utility model. The sensing area of ​​the capacitive sensing unit 2 is roughly as follows Figure 1 As shown in the sensing area 1 in the figure, if the human hand is located in the space above the sensing area 1 surrounded by the two arrows in the figure and close to the housing 5, the capacitance value of the capacitive sensing unit 2 inside the housing 5 changes, and the control system 4 generates an electrical control command when the capacitance value increases, thereby controlling the actuator 14 of the electrical appliance such as a fan (see Figure 4 ) to respond.

[0024] The working principle of the contactless electrical appliance control device according to the embodiment of the utility model is described below.

[0025] The capacitance calculation formula is C=εS / d.

[0026] Where C: Capacitor value

[0027] ε: Dielectric constant of the medium between the plates

[0028] S: Plate area

[0029] D: Distance between plates

[0030] From the capacitance calculation formula, we can see that the capacitance is inversely proportional to the distance between the two plates of the capacitor, that is, the closer the distance between the two plates, the greater the capacitance. Based on this basic principle, non-contact proximity detection can be achieved. Figure 3As shown, when the capacitor moving plate 6 approaches the capacitor fixed plate 7 in the moving plate approaching direction 8 as shown by the arrow in the figure, the capacitance value of the capacitor formed by the capacitor moving plate 6 and the capacitor fixed plate 7 will change. Correspondingly, when the distance between the capacitor moving plate 6 and the capacitor fixed plate 7 increases, the capacitance value will also change. When the human body, such as a human hand, acts as a moving plate and approaches the capacitor induction ring 15 in the human body approaching direction 9, the capacitor induction ring 15 will generate a capacitance signal. In this embodiment, the capacitor induction unit 2 is the capacitor induction ring 15, and the capacitor induction ring 15 can be a circular ring, an ellipse, a triangle, a polygon, or an irregular shape.

[0031] Figure 4 Schematic diagram of the induction source proximity sensing device assembly of the utility model embodiment, such as Figure 4 As shown, the device housing 11 includes a capacitive induction loop 15, a connecting wire 3, a control system 4, and an execution device 14. The capacitive induction loop 15 is connected to the control system 4 via the connecting wire 3, and the control system 4 is connected to the execution device 14.

[0032] The control system 4 includes a capacitance sensing circuit 12 and a controller 13. The controller 13 is connected to the capacitance sensing circuit 12 and the execution device 14 respectively; the capacitance sensing circuit 12 is used to receive a capacitance value signal, and the controller 13 receives the capacitance value signal and makes a judgment. If the capacitance value is greater than a preset threshold value, a control instruction is issued to the execution device 14 of the electrical appliance. In addition, if a human hand located outside the housing 10 of the device is away from the sensing area 1, the above-mentioned capacitance value will become smaller, and the controller 13 can also make a judgment. If the capacitance value is less than the preset threshold value, other control instructions are issued to the execution device 14. In other words, the computer program executed by the controller 13 can be flexibly set so that the controller 13 can issue various control instructions according to the change of the capacitance value. Taking an electric fan as an example in the embodiment of the utility model, the execution device 14 can be a motor used to drive the fan blades to rotate or drive the fan head to swing.

[0033] Figure 5 This is a working process logic diagram of the contactless power supply control device of the utility model. Figure 5 The process example is that when the equipment is in normal operation and no human hands are approaching, the inductive capacitor ring detects that the capacitance value is very small because no human body is approaching; when the human hand approaches the capacitor induction ring, the capacitance value increases, and after the capacitance sensing circuit detects that it exceeds the preset threshold, the controller makes a judgment and issues a corresponding response instruction to control other execution devices of the whole machine, such as the motor, to respond; when the human hand leaves again, the capacitance sensing circuit detects that the capacitance value decreases, and the controller makes a judgment and controls other execution devices of the whole machine to respond.

[0034] In the embodiment of the utility model, the fan casing 5 is the shell of the fan base, the length of the shell can be 180-220mm, and the width can be 180-220mm; the capacitive sensing unit 2 is a circular ring, the width of which is 4-7mm, the inner diameter is 48-56mm, and the outer diameter is 64-72mm, and the above values ​​all include endpoint values.

[0035] According to the technical solution of the embodiment of the utility model, the contactless electrical appliance control device includes a control system 4 and a capacitive sensing unit 2. The capacitive sensing unit 2 generates a capacitance value signal when the induction source outside the electrical appliance approaches. The control system 4 forms an execution device 14 of the electrical appliance to issue a control instruction based on the capacitance value signal. Therefore, when the user needs to operate the electrical appliance, he or she can reach close to the electrical appliance, and the electrical appliance can sense it and respond immediately. Taking the fan as an example, the specific response method can be to start the fan, or to turn on the swing head function, etc., which can be flexibly pre-set. Therefore, the embodiment of the utility model makes the operation of the electrical appliance more convenient, safer, and provides a good user experience.

[0036] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A contactless electrical appliance control device, arranged in an electrical appliance, characterized in that: The contactless electrical appliance control device comprises a control system (4), a capacitive sensing unit (2), and a connecting wire (3), wherein: The capacitive sensing unit (2) is arranged inside the housing (5) of the electrical appliance and is connected to the control system (4); The capacitive sensing unit (2) is used to generate a capacitance value signal when an induction source outside the electrical appliance approaches the electrical appliance; The control system (4) is arranged on a circuit board inside the housing (5), and the capacitive sensing unit (2) and the circuit board are connected via a connecting wire (3); The control system (4) is used for receiving the capacitance value signal and forming an electrical appliance control command according to the capacitance value signal.

2. The contactless electrical appliance control device according to claim 1, characterized in that: The capacitive sensing unit (2) is a capacitive sensing ring.

3. The contactless electrical appliance control device according to claim 2, characterized in that: The capacitive induction ring is in a circular, elliptical, triangular, polygonal, or irregular shape.

4. The contactless electrical appliance control device according to claim 1, characterized in that: The induction source is a human hand.

5. The contactless electrical appliance control device according to claim 1, characterized in that: The control system (4) comprises a capacitance sensing circuit (12) and a controller (13), wherein: The controller (13) is connected to the capacitive sensing circuit (12) and the actuator (14) of the electrical appliance respectively; The capacitance sensing circuit (12) is used to receive the capacitance value signal; The controller (13) is used to receive the capacitance value signal and make a judgment, and if the capacitance value is greater than a preset threshold, send a control instruction to the execution device (14).

6. The contactless electrical appliance control device according to claim 5, characterized in that: The execution device (14) is a motor.

7. An electrical appliance, characterized in that: A contactless electrical appliance control device comprising any one of claims 1 to 6.

8. The electrical appliance according to claim 7, characterized in that: The electrical appliance is a fan, and the housing (5) of the electrical appliance is the shell of the fan base.

9. The electrical appliance according to claim 8, characterized in that The length of the shell is 180-220 mm, and the width is 180-220 mm; the capacitive sensing unit (2) is a circular ring, and its width is 4-7 mm, its inner diameter is 48-56 mm, and its outer diameter is 64-72 mm.

Images