Knob control circuit and knob

Abstract

The present invention relates to the field of electronic knob control, and provides a knob control circuit and a knob. A knob control circuit comprises: a control unit; a motion trajectory detection unit, the motion trajectory detection unit is electrically connected to the control unit, the motion trajectory detection unit is used to detect the rotation angle of the knob and send it to the control unit for processing to obtain a first electrical signal and a second electrical signal; a vibration feedback unit, the vibration feedback unit is electrically connected to the control unit, the control unit sends the first electrical signal to the vibration feedback unit; a display unit, the display unit is electrically connected to the control unit, the control unit sends the second electrical signal to the display unit; a battery management unit electrically connected to the control unit. The present invention is cleverly designed, and through the frequency and intensity changes of the vibration motor, the user can feel a different feel when rotating the knob, and can perceive the rotation state of the knob by touch.

Description

Technical Field

[0001] The invention relates to the field of electronic knob control, and more particularly to a knob control circuit and a knob. Background Art

[0002] With the improvement of people's living standards, the consumer market of household appliances has also developed rapidly, and many household appliances on the market have knob structures. For example, water heaters, gas stoves, microwave ovens, washing machines and other appliances, knobs are usually used to adjust temperature, firepower, time, etc.

[0003] The existing knob scale feedback on the market is all through physical means, which is relatively rigid and not flexible enough. Because traditional buttons are physical vibrations, the vibration frequency and vibration intensity cannot be changed, and the vibration sense cannot change with the changes in the picture on the knob display. Summary of the invention

[0004] The object of the present invention is to provide a knob control circuit and a knob.

[0005] The problem to be solved by the present invention is that the vibration feeling of the knob cannot change with the picture on the display screen.

[0006] Compared with the prior art, the technical solution of the present invention and its beneficial effects are as follows:

[0007] A knob control circuit comprises: a control unit; a motion trajectory detection unit, the motion trajectory detection unit is electrically connected to the control unit, the motion trajectory detection unit is used to detect the rotation angle of the knob and send it to the control unit for processing to obtain a first electrical signal and a second electrical signal; a vibration feedback unit, the vibration feedback unit is electrically connected to the control unit, the control unit sends the first electrical signal to the vibration feedback unit; a display unit, the display unit is electrically connected to the control unit, the control unit sends the second electrical signal to the display unit; and a battery management unit, the battery management unit is electrically connected to the control unit.

[0008] As a further improvement, the motion trajectory detection unit includes a motion trajectory detection sensor; the VLD terminal and VDD terminal of the motion trajectory detection sensor are both connected to the power supply terminal, the VSS terminal and ID_SEL terminal of the motion trajectory detection sensor are both grounded, a first capacitor is connected in series between the VLD terminal and the VSS terminal, a second capacitor is connected in parallel to both ends of the first capacitor, and a third capacitor is connected in series between the VDDA terminal and the VSS terminal of the motion trajectory detection sensor; the SDA terminal of the motion trajectory detection sensor is connected to the I2CO_SDA terminal of the control unit, the SCL terminal of the motion trajectory detection sensor is connected to the I2CO_SCL terminal of the control unit, a first resistor is connected in series between the SCL terminal and the power supply terminal, and a second resistor is connected in series between the SDA terminal and the power supply terminal.

[0009] As a further improvement, the model of the motion trajectory sensor is PAT9125EL-TKIT.

[0010] As a further improvement, the vibration feedback unit includes: a tactile driver, wherein the RSTN terminal of the tactile driver is connected to the LRA_NRST terminal of the control unit, the INTN terminal of the tactile driver is connected to the LRA_INTN terminal of the control unit, the SCL terminal of the tactile driver is connected to the I2C1_SCL terminal of the control unit, the SDA terminal of the tactile driver is connected to the I2C1_SDO terminal of the control unit, a third resistor is connected in series between the RSTN terminal of the tactile driver and the power supply terminal, a fourth resistor is connected in series between the INTN terminal of the tactile driver and the power supply terminal, a first inductor is connected in series between the SW terminal of the tactile driver and the power supply terminal, and the VBAT terminal of the tactile driver is connected to the power supply terminal; a vibration motor, wherein the two ends of the vibration motor are respectively connected to the HDP terminal and the HDN terminal of the tactile driver.

[0011] As a further improvement, the model of the tactile driver is FCQFN-20L.

[0012] As a further improvement, it also includes a voltage stabilizing unit electrically connected to the control unit, the voltage stabilizing unit includes a linear voltage regulator, the OUT end of the linear voltage regulator is connected to the power supply end, a fifth resistor is connected in series between the FB end and the ground end of the linear voltage regulator, and a sixth resistor is connected in series between the OUT end of the linear voltage regulator and the fifth resistor.

[0013] As a further improvement, the battery management unit includes a battery management chip, the PVIN terminal and AVIN terminal of the battery management chip are both connected to the power supply terminal, a second inductor is connected in series between the SWP terminal of the battery management chip and the PVIN terminal, and a third inductor is connected in series between the SWN terminal of the battery management chip and the ground terminal; the DSI interface of the battery management unit is connected to the control unit.

[0014] As a further improvement, the display unit includes a SOC chip; a seventh resistor is connected in series between the CS terminal of the SOC chip and the power supply terminal, an eighth resistor is connected in series between the WP terminal of the SOC chip and the power supply terminal, a ninth resistor is connected in series between the WP terminal and the ground terminal, a tenth resistor is connected in series between the RESET terminal of the SOC chip and the power supply terminal, an eleventh resistor is connected in series between the SCLK terminal of the SOC chip and the ground terminal, and a twelfth resistor is connected in series between the SI terminal of the SOC chip and the power supply terminal; the display unit is connected to the control unit via a PM interface.

[0015] As a further improvement, the model of the control unit is AW8697FCR.

[0016] A knob comprises the knob control circuit.

[0017] The beneficial effects of the present invention are as follows: a control unit, a motion trajectory detection unit, a vibration feedback unit and a display unit are combined to realize detecting the rotation of a rotating component by a motion trajectory detection sensor, and sending the rotation parameters of the rotating component to the control unit for processing, and then the control unit sends a signal to the vibration feedback unit, so that the vibration motor changes in frequency and intensity accordingly with the rotation of the rotating component, so that the user can get clear feedback when rotating the knob, and the display screen displays the numerical changes and scale bar changes according to the parameter changes of the knob. The present invention is cleverly designed, realizes dual feedback in vision and touch, optimizes the user's operating experience, and through the frequency and intensity changes of the vibration motor, the user can feel the different feel when rotating the knob, and can know the rotation state of the knob by touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a logical structure block diagram of a control circuit provided by an embodiment of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure of a control unit provided in an embodiment of the present invention.

[0020] Figure 3 It is a schematic diagram of the structure of a vibration feedback unit provided in an embodiment of the present invention.

[0021] Figure 4It is a structural schematic diagram of a motion trajectory detection unit provided by an embodiment of the present invention.

[0022] Figure 5 It is a structural schematic diagram of a voltage stabilizing unit provided in an embodiment of the present invention.

[0023] Figure 6 It is a schematic diagram of the structure of a battery management unit provided in an embodiment of the present invention.

[0024] Figure 7 It is a schematic diagram of the structure of a display unit provided by an embodiment of the present invention.

[0025] Figure 8 This is a first voltage stabilizing circuit diagram provided by an embodiment of the present invention.

[0026] Fig. 9 This is a second voltage stabilizing circuit diagram provided by an embodiment of the present invention.

[0027] Fig.10 is a circuit diagram of a power supply unit provided in an embodiment of the present invention.

[0028] Fig.11 It is a schematic diagram of the knob provided in the embodiment of the present invention in the fresh air mode.

[0029] Fig.12 It is a schematic diagram of a knob provided by an embodiment of the present invention in a cooling mode.

[0030] Fig.13 It is a three-dimensional structural diagram of a knob provided in an embodiment of the present invention.

[0031] Fig.14 It is a schematic diagram of the installation position of the motion trajectory sensor and the rotating component provided in an embodiment of the present invention.

[0032] Fig.15 It is a schematic diagram of the installation position of the motion trajectory sensor and the rotating component provided by another embodiment.

[0033] In the figure: 1. Base 2. Rotating part 3. Display screen 4. Motion track sensor DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] Reference Figures 1 to 10 As shown, a knob control circuit includes: a control unit; a motion trajectory detection unit, the motion trajectory detection unit is electrically connected to the control unit, the motion trajectory detection unit is used to detect the rotation angle of the knob and send it to the control unit for processing to obtain a first electrical signal and a second electrical signal; a vibration feedback unit, the vibration feedback unit is electrically connected to the control unit, the control unit sends the first electrical signal to the vibration feedback unit; and a display unit, the display unit is electrically connected to the control unit, and the control unit sends the second electrical signal to the display unit. By combining a control unit, a motion trajectory detection unit, a vibration feedback unit and a display unit, the rotation of a rotating component is detected by a motion trajectory detection sensor, and the rotation parameters of the rotating component are sent to the control unit for processing. Subsequently, the control unit sends a signal to the vibration feedback unit, so that the vibration motor changes in frequency and intensity accordingly with the rotation of the rotating component, so that the user can get clear feedback when rotating the knob, and the display screen displays the numerical changes and scale bar changes according to the parameter changes of the knob. The present invention is cleverly designed, realizes dual feedback in vision and touch, optimizes the user's operating experience, and through the frequency and intensity changes of the vibration motor, the user can feel the different feel when rotating the knob, and can know the rotation state of the knob by touch.

[0037] Reference Figure 4As shown, the motion trajectory detection unit includes a motion trajectory detection sensor; the VLD terminal and the VDD terminal of the motion trajectory detection sensor are both connected to the power supply terminal, the VSS terminal and the ID_SEL terminal of the motion trajectory detection sensor are both grounded, a first capacitor C75 is connected in series between the VLD terminal and the VSS terminal, a second capacitor C77 is connected in parallel to both ends of the first capacitor C75, and a third capacitor C97 is connected in series between the VDDA terminal and the VSS terminal of the motion trajectory detection sensor; the SDA terminal of the motion trajectory detection sensor is connected to the I2CO_SDA terminal of the control unit, the SCL terminal of the motion trajectory detection sensor is connected to the I2CO_SCL terminal of the control unit, a first resistor R22 is connected in series between the SCL terminal and the power supply terminal, and a second resistor R21 is connected in series between the SDA terminal and the power supply terminal. The model of the motion trajectory sensor is PAT9125EL-TKIT.

[0038] Reference Figure 3 As shown, the vibration feedback unit includes: a tactile driver, wherein the RSTN terminal of the tactile driver is connected to the LRA_NRST terminal of the control unit, the INTN terminal of the tactile driver is connected to the LRA_INTN terminal of the control unit, the SCL terminal of the tactile driver is connected to the I2C1_SCL terminal of the control unit, the SDA terminal of the tactile driver is connected to the I2C1_SDO terminal of the control unit, a third resistor R104 is connected in series between the RSTN terminal of the tactile driver and the power supply terminal, a fourth resistor R105 is connected in series between the INTN terminal of the tactile driver and the power supply terminal, a first inductor L7 is connected in series between the SW terminal of the tactile driver and the power supply terminal, and the VBAT terminal of the tactile driver is connected to the power supply terminal; a vibration motor, wherein the two ends of the vibration motor are respectively connected to the HDP terminal and the HDN terminal of the tactile driver. The model of the tactile driver is FCQFN-20L.

[0039] Reference Figure 5 As shown, a knob control circuit also includes a voltage stabilizing unit electrically connected to the control unit, the voltage stabilizing unit includes a linear voltage regulator, the OUT end of the linear voltage regulator is connected to the power supply end, a fifth resistor R99 is connected in series between the FB end and the ground end of the linear voltage regulator, and a sixth resistor R97 is connected in series between the OUT end of the linear voltage regulator and the fifth resistor R99.

[0040] Reference Figure 6As shown, a knob control circuit also includes a battery management unit; the battery management unit includes a battery management chip, the PVIN terminal and the AVIN terminal of the battery management chip are both connected to the power supply terminal, a second inductor L5 is connected in series between the SWP terminal of the battery management chip and the PVIN terminal, and a third inductor L6 is connected in series between the SWN terminal of the battery management chip and the ground terminal; the DSI interface of the battery management unit is connected to the control unit.

[0041] Reference Figure 7 As shown, the display unit includes a SOC chip; a seventh resistor R113 is connected in series between the CS terminal of the SOC chip and the power supply terminal, an eighth resistor R40 is connected in series between the WP terminal of the SOC chip and the power supply terminal, a ninth resistor R44 is connected in series between the WP terminal and the ground terminal, a tenth resistor R39 is connected in series between the RESET terminal of the SOC chip and the power supply terminal, an eleventh resistor R29 is connected in series between the SCLK terminal of the SOC chip and the ground terminal, and a twelfth resistor R114 is connected in series between the SI terminal of the SOC chip and the power supply terminal; the display unit is connected to the control unit through a PM interface.

[0042] Reference Figure 2 As shown, the model of the control unit is AW8697FCR.

[0043] Figure 8 and Fig. 9 The circuit diagram shown is a voltage stabilizing circuit of a knob control circuit.

[0044] Fig.10 The circuit diagram shown is a power supply circuit for a knob control circuit.

[0045] A knob comprises the knob control circuit.

[0046] Reference Fig.11 and Fig.12 As shown, the display screen displays "fresh air mode" and "cooling mode" respectively. When the rotating part of the knob is turned, the scale bar and the value on the display screen will change according to the rotation parameters, and the vibration feedback unit will make corresponding changes in the vibration intensity and vibration frequency according to the rotation parameters.

[0047] Reference Fig.13As shown, a knob includes a base body 1 and a rotating part 2 rotatably mounted on the base body 1, and also includes: a main control board arranged on the inner side of the base body 1; a vibration module connected to the main control board; a motion track sensor 4 connected to the main control board, the motion track sensor 4 is used to detect the rotation angle of the rotating part 2; a display screen 3 electrically connected to the main control board and arranged on the rotating part 2; wherein, when the rotating part 2 rotates, the motion track sensor 4 sends the detected rotation angle to the main control board for processing, and then the main control board sends signals to the vibration module and the display screen 3 respectively. wherein, the display unit includes the display screen 3, the control unit includes the main control board, the vibration feedback unit includes the vibration module, and the motion track detection unit includes the motion track sensor 4.

[0048] Reference Fig.14 As shown, in this embodiment, the motion trajectory sensor 4 is installed on the side of the rotating component 2.

[0049] Reference Fig.15 As shown, in another embodiment, the motion trajectory sensor 4 is installed above or below the rotating component 2.

[0050] The working principle and working process of this embodiment can refer to the corresponding contents of the above-mentioned embodiments.

[0051] The same or similar parts between the above-mentioned embodiments in this specification can be referenced to each other, and each implementation method focuses on the differences from other implementation methods, but it is not limited to the differences that cannot be replaced or superimposed on each other.

[0052] The above embodiments are only used to explain the technical solutions of the present invention rather than to limit them. Those skilled in the art should understand that any modification and equivalent substitution that does not depart from the spirit and scope of the present invention should fall within the protection scope of the claims of the present invention.

Claims

1. A knob control circuit, characterized in that: include: Control unit; A motion trajectory detection unit, the motion trajectory detection unit is electrically connected to the control unit, and the motion trajectory detection unit is used to detect the rotation angle of the knob and send it to the control unit for processing to obtain a first electrical signal and a second electrical signal; a vibration feedback unit, the vibration feedback unit being electrically connected to the control unit, and the control unit sending the first electrical signal to the vibration feedback unit; a display unit, the display unit being electrically connected to the control unit, and the control unit sending the second electrical signal to the display unit; A battery management unit, the battery management unit is electrically connected to the control unit; The motion trajectory detection unit includes a motion trajectory detection sensor; a VLD terminal and a VDD terminal of the motion trajectory detection sensor are both connected to a power supply terminal, a VSS terminal and an ID_SEL terminal of the motion trajectory detection sensor are both grounded, a first capacitor is connected in series between the VLD terminal and the VSS terminal, a second capacitor is connected in parallel to both ends of the first capacitor, and a third capacitor is connected in series between the VDDA terminal and the VSS terminal of the motion trajectory detection sensor; an SDA terminal of the motion trajectory detection sensor is connected to an I2CO_SDA terminal of the control unit, an SCL terminal of the motion trajectory detection sensor is connected to an I2CO_SCL terminal of the control unit, a first resistor is connected in series between the SCL terminal and the power supply terminal, and a second resistor is connected in series between the SDA terminal and the power supply terminal.

2. A knob control circuit according to claim 1, characterized in that: The model of the motion track sensor is PAT9125EL-TKIT.

3. The knob control circuit according to claim 1, characterized in that: The vibration feedback unit comprises: a haptic driver, wherein an RSTN terminal of the haptic driver is connected to an LRA_NRST terminal of the control unit, an INTN terminal of the haptic driver is connected to an LRA_INTN terminal of the control unit, an SCL terminal of the haptic driver is connected to an I 2C1_SCL terminal of the control unit, an SDA terminal of the haptic driver is connected to an I 2C1_SDO terminal of the control unit, a third resistor is connected in series between the RSTN terminal of the haptic driver and a power supply terminal, a fourth resistor is connected in series between the INTN terminal of the haptic driver and the power supply terminal, a first inductor is connected in series between the SW terminal of the haptic driver and the power supply terminal, and a VBAT terminal of the haptic driver is connected to the power supply terminal; A vibration motor, wherein two ends of the vibration motor are respectively connected to the HDP end and the HDN end of the haptic driver.

4. A knob control circuit according to claim 3, characterized in that: The model of the haptic driver is FCQFN-20L.

5. The knob control circuit according to claim 1, characterized in that: It also includes a voltage stabilizing unit electrically connected to the control unit, the voltage stabilizing unit includes a linear voltage regulator, the OUT end of the linear voltage regulator is connected to the power supply end, a fifth resistor is connected in series between the FB end and the ground end of the linear voltage regulator, and a sixth resistor is connected in series between the OUT end of the linear voltage regulator and the fifth resistor.

6. The knob control circuit according to claim 1, characterized in that: The battery management unit includes a battery management chip, the PVIN terminal and the AVIN terminal of the battery management chip are both connected to the power supply terminal, a second inductor is connected in series between the SWP terminal of the battery management chip and the PVIN terminal, and a third inductor is connected in series between the SWN terminal of the battery management chip and the ground terminal; the DSI interface of the battery management unit is connected to the control unit.

7. The knob control circuit according to claim 1, characterized in that: The display unit includes a SOC chip; a seventh resistor is connected in series between the CS terminal of the SOC chip and the power supply terminal, an eighth resistor is connected in series between the WP terminal of the SOC chip and the power supply terminal, a ninth resistor is connected in series between the WP terminal and the ground terminal, a tenth resistor is connected in series between the RESET terminal of the SOC chip and the power supply terminal, an eleventh resistor is connected in series between the SCLK terminal of the SOC chip and the ground terminal, and a twelfth resistor is connected in series between the SI terminal of the SOC chip and the power supply terminal; the display unit is connected to the control unit via a PM interface.

8. The knob control circuit according to claim 1, characterized in that: The model of the control unit is AW8697FCR.

9. A knob, characterized in that: The invention comprises a knob control circuit as claimed in any one of claims 1 to 8.

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