TWI835570B - Human interface device - Google Patents

Abstract

The invention provides a human interface device (HID), which includes a detection board, a transmitting electrode, a receiving electrode, a sensing electrode and a driving circuit. The transmitting electrode and the receiving electrode are arranged on the detection board. The sensing electrode is adapted to move above the detection board, wherein the sensing electrode is not in electrical contact with the transmitting electrode and the receiving electrode. When the sensing electrode moves above the transmitting electrode and the receiving electrode, the sensing electrode transmits an AC signal from the transmitting electrode to the receiving electrode. The driving circuit is coupled to the transmitting electrode and the receiving electrode. The driving circuit outputs the AC signal to the transmitting electrode. The driving circuit determines the position of the sensing electrode according to a signal of the receiving electrode.

Description

Human-machine interface device

The present invention relates to a sensing device, and in particular to a human interface device (HID).

Human interface device (HID) is also often called an input device. Users can control the equipment through human-machine interface devices. Common human-machine interface devices include buttons, knobs, sliding rods, scroll wheels and other devices. Generally, human-machine interface devices use components such as variable resistors, Hall sensors, or rotary encoders to detect the user's control behavior. Each of these components has its own limitations and shortcomings. For example, variable resistors have larger errors. Variable resistors are contact components, and contact components have a shorter service life. Hall sensors require magnetic components. The position detection density of Hall sensors is low, and the price of Hall sensors is relatively high. Rotary encoders can only detect the direction and speed of rotation, but cannot detect absolute position. How to implement human-machine interface devices is one of many technical issues.

It should be noted that the content of the "Prior Art" paragraph is used to help understand the present invention. Some (or all) of the contents disclosed in the "Prior Art" paragraph may not be conventional techniques known to those with ordinary skill in the relevant technical field. The content disclosed in the "Prior Art" paragraph does not mean that the content has been known to those with ordinary knowledge in the technical field before the application of the present invention.

The present invention provides a human-machine interface device to detect a user's control behavior.

In an embodiment of the present invention, the above-mentioned human-machine interface device includes a detection board, a transmitting electrode, a receiving electrode, a sensing electrode and a driving circuit. The transmitting electrode and the receiving electrode are arranged on the detection board. The sensing electrode is adapted to move above the detection plate, wherein the sensing electrode does not electrically contact the transmitting electrode and the receiving electrode. When the sensing electrode moves above the transmitting electrode and the receiving electrode, the sensing electrode transmits the AC signal from the transmitting electrode to the receiving electrode. The driving circuit is coupled to the transmitting electrode and the receiving electrode. The driving circuit outputs the AC signal to the emitter electrode. The driving circuit determines the position of the sensing electrode based on the signal from the receiving electrode.

Based on the above, the sensing electrodes described in the embodiments of the present invention can move above the detection plate based on the user's contact (the user's manipulation behavior). The driving circuit outputs the AC signal to the emitter electrode. When the sensing electrode moves above the transmitting electrode and the receiving electrode, the sensing electrode and the transmitting electrode form a parallel plate capacitance, and the sensing electrode and the receiving electrode form another parallel plate capacitance. Therefore, when the sensing electrode moves above the transmitting electrode and the receiving electrode, the AC signal from the transmitting electrode can be transmitted to the receiving electrode through the sensing electrode. The driving circuit determines the position of the sensing electrode based on the signal from the receiving electrode, and then determines the motion state of the sensing electrode (the user's control behavior).

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings.

The term "coupling (or connection)" used throughout the specification of this case (including the scope of the patent application) can refer to any direct or indirect connection means. For example, if a first device is coupled (or connected) to a second device, it should be understood that the first device can be directly connected to the second device, or the first device can be connected through other devices or other devices. A connection means is indirectly connected to the second device. The terms "first" and "second" mentioned in the full text of the specification of this case (including the scope of the patent application) are used to name elements or to distinguish different embodiments or scopes, and are not used to limit the number of elements. The upper or lower limits are not used to limit the order of components. In addition, wherever possible, elements/components/steps with the same reference numbers are used in the drawings and embodiments to represent the same or similar parts. Elements/components/steps using the same numbers or using the same terms in different embodiments can refer to the relevant descriptions of each other.

FIG. 1 is a circuit block schematic diagram of a human-machine interface device 100 according to an embodiment of the present invention. The human-machine interface device 100 includes a user contact part 110, a detection board 120 and a driving circuit 130. FIG. 1 also shows a schematic cross-sectional view of the user contact portion 110 and the detection plate 120 . The user 10 touches the user contact part 110 (control behavior), which drives the user contact part 110 to move above the detection plate 120 . The specific geometric structure of the user contact portion 110 can be determined according to actual design and practical application. For example, in some embodiments, the user contact part 110 may be a button part, a knob part, a sliding rod part, a roller part of the human-machine interface device 100 or other parts for the user 10 to contact.

The human-machine interface device 100 further includes at least one sensing electrode Es1, at least one transmitting electrode Etx1 and at least one receiving electrode Erx1. The specific numbers of the sensing electrode Es1, the transmitting electrode Etx1 and the receiving electrode Erx1 can be determined according to the actual design and practical application. Different implementations of the sensing electrode Es1, the transmitting electrode Etx1, and the receiving electrode Erx1 will be introduced later with multiple application examples. The sensing electrode Es1 is arranged on the user contact portion 110 . The sensing electrode Es1 at the user contact portion 110 is not in physical electrical contact with the transmitting electrode Etx1 and the receiving electrode Erx1 of the detection plate 120 . Based on the contact (control behavior) of the user 10 on the user contact portion 110 , the sensing electrode Es1 is adapted to move above the detection plate 120 shown in FIG. 1 . The sensing electrode Es1 is not in physical electrical contact with the transmitting electrode Etx1 and the receiving electrode Erx1. Based on actual design, in some embodiments, the sensing electrode Es1 may be suspended above the detection plate 120 . In other embodiments, Mylar or other dielectric materials may be disposed between the sensing electrode Es1 and the detection plate 120 to separate the sensing electrode Es1 from the transmitting electrode Etx1 (receiving electrode Erx1).

The driving circuit 130 is coupled to the transmitting electrode Etx1 and the receiving electrode Erx1. The driving circuit 130 outputs the AC signal Sac to the emitter electrode Etx1. The transmitting electrode Etx1 and the receiving electrode Erx1 are arranged on the detection board 120 . Depending on the actual design and application, the detection board 120 may include a printed circuit board (PCB), a flexible printed circuit (FPC) or other substrates. In the scenario shown in Figure 1, the sensing electrode Es1 and the transmitting electrode Etx1 form a parallel plate capacitor, and the sensing electrode Es1 and the receiving electrode Erx1 form another parallel plate capacitor. When the sensing electrode Es1 moves above the transmitting electrode Etx1 and the receiving electrode Erx1, the sensing electrode Es1 transmits the AC signal Sac from the transmitting electrode Etx1 to the receiving electrode Erx1. The driving circuit 130 determines the position of the sensing electrode Es1 based on the signal Ss of the receiving electrode Erx1 (for example, determines whether the sensing electrode Es1 is above the transmitting electrode Etx1 and the receiving electrode Erx1), and then determines the motion state of the sensing electrode Es1. When the transmitting electrode Etx1 outputs the AC signal Sac, the driving circuit 130 can determine whether the receiving electrode Erx1 has received the AC signal from the transmitting electrode Etx1, that is, it can know whether the sensing electrode Es1 moves above the transmitting electrode Etx1 and the receiving electrode Erx1.

Based on the appropriate layout of the transmitting electrode Etx1 and the receiving electrode Erx1, the human-machine interface device 100 can accurately position the sensing electrode Es1. For example, in some embodiments, the transmitting electrode Etx1 includes a plurality of first transmitting electrodes located at different positions of the detection plate 120, the receiving electrode Erx1 includes a first common receiving electrode, and the sensing electrode Es1 includes a first sensing electrode. During the movement of the first sensing electrode, the first sensing electrode remains above the first common receiving electrode, and the first sensing electrode selectively moves above one of the first transmitting electrodes. The driving circuit 130 outputs the AC signal Sac to the first transmitting electrodes at different time points, and determines the position (motion state) of the first sensing electrode based on the signals of the first common receiving electrode at different time points. In some embodiments, the first sensing electrode may span two or more adjacent emitter electrodes. The driving circuit 130 can detect the adjacent transmitting electrodes through the first common receiving electrode and the first sensing electrode at different time points to obtain the signal intensity values corresponding to the adjacent transmitting electrodes. The driving circuit 130 can obtain a more accurate first sensing electrode position according to the proportional relationship between these signal strength values (achieving more (accurate) position detection than the number of transmitting electrode sequences).

In other embodiments, the transmitting electrode Etx1 includes a common transmitting electrode, the receiving electrode Erx1 includes a plurality of receiving electrodes located at different positions of the detection plate 120 , and the sensing electrode Es1 includes a first sensing electrode. During the movement of the first sensing electrode, the first sensing electrode remains above the common transmitting electrode, and the first sensing electrode selectively moves above one of the receiving electrodes. The driving circuit 130 outputs the AC signal Sac to the common transmitting electrode, and determines the position (motion state) of the first sensing electrode based on the signals of these receiving electrodes. In some embodiments, the first sensing electrode may span two or more adjacent receiving electrodes. The driving circuit 130 can detect the common transmitting electrode through the adjacent receiving electrodes and the first sensing electrode, and obtain the signal intensity values corresponding to the adjacent receiving electrodes. The driving circuit 130 can obtain a more accurate first sensing electrode position according to the proportional relationship between these signal strength values (achieving more (accurate) position detection than the number of transmitting electrode sequences).

To sum up, the sensing electrode Es1 can move above the detection plate 120 based on the contact of the user 10 (the manipulation behavior of the user 10). The driving circuit 130 outputs the AC signal Sac to the emitter electrode Etx1. When the sensing electrode Es1 moves above the transmitting electrode Etx1 and the receiving electrode Erx1, the sensing electrode Es1 and the transmitting electrode Etx1 form a parallel plate capacitor, and the sensing electrode Es1 and the receiving electrode Erx1 form another parallel plate capacitance. Therefore, when the sensing electrode Es1 moves above the transmitting electrode Etx1 and the receiving electrode Erx1, the AC signal Sac of the transmitting electrode Etx1 can be transmitted to the receiving electrode Erx1 through the sensing electrode Es1.

The driving circuit 130 can determine the motion state of the sensing electrode Es1 (the control behavior of the user 10) based on the signal of the receiving electrode Erx1. According to different designs, in some embodiments, the implementation of the above-mentioned driving circuit 130 may be a hardware circuit. In other embodiments, the driving circuit 130 may be implemented in the form of firmware, software (ie, program), or a combination of the foregoing. In some embodiments, the implementation of the driving circuit 130 may be a combination of hardware, firmware, and software.

In terms of hardware, the above-mentioned driving circuit 130 can be implemented as a logic circuit on an integrated circuit. For example, the related functions of the driving circuit 130 may be implemented in one or more controllers, microcontrollers, microprocessors, application-specific integrated circuits (ASICs), Various logic blocks, modules and circuits in digital signal processors (DSPs), Field Programmable Gate Arrays (FPGAs) and/or other processing units. The relevant functions of the driving circuit 130 can be implemented as hardware circuits using hardware description languages (such as Verilog HDL or VHDL) or other suitable programming languages, such as various logic blocks, modules and modules in integrated circuits. circuit.

In software form and/or firmware form, the relevant functions of the above-mentioned driver circuit 130 can be implemented as programming codes. For example, the driver circuit 130 is implemented using general programming languages (such as C, C++ or assembly language) or other suitable programming languages. The programming codes can be recorded/stored in a "non-transitory computer readable medium". In some embodiments, the non-transitory computer readable medium includes, for example, a semiconductor memory and/or a storage device. The semiconductor memory includes a memory card, a read-only memory (ROM), a flash memory, a programmable logic circuit or other semiconductor memory. The storage device includes a tape, a disk, a hard disk drive (HDD), a solid-state drive (SSD) or other storage devices. An electronic device (such as a computer, a central processing unit (CPU), a controller, a microcontroller or a microprocessor) can read and execute the programming code from the non-temporary computer-readable medium to implement the relevant functions of the drive circuit 130. Alternatively, the programming code can be provided to the electronic device via any transmission medium (such as a communication network or broadcast waves, etc.). The communication network is, for example, the Internet, a wired communication network, a wireless communication network or other communication medium.

FIG. 2 is a circuit block diagram of the driving circuit 130 according to an embodiment of the present invention. Figure 2 also shows a top view of the sensing electrode Es21, the receiving electrode Erx21 and the transmitting electrodes Etx20~Etx29. The sensing electrode Es21 shown in Figure 2 can be used as an implementation example of the sensing electrode Es1 shown in Figure 1, the receiving electrode Erx21 shown in Figure 2 can be used as an implementation example of the receiving electrode Erx1 shown in Figure 1, and the transmitting electrode Etx20 shown in Figure 2 ~Etx29 can be used as an implementation example of the emitter electrode Etx1 shown in Figure 1. It should be noted that the specific number of the emitter electrodes Etx20 to Etx29 shown in Figure 2 can be determined according to the actual design. For the detection board 120 and the driving circuit 130 shown in FIG. 2 , reference can be made to the relevant descriptions of the detection board 120 and the driving circuit 130 shown in FIG. 1 , so the details will not be described again. The transmitting electrodes Etx20 to Etx29 are arranged beside the receiving electrode Erx21 along the long axis direction of the receiving electrode Erx21, as shown in FIG. 2 . Based on the contact (control behavior) of the user 10, the sensing electrode Es21 can move along the long axis direction of the receiving electrode Erx21 (the left and right direction in Figure 2). During the movement of the sensing electrode Es21, one end of the sensing electrode Es21 remains above the receiving electrode Erx21, and the other end of the sensing electrode Es21 selectively moves above one of the transmitting electrodes Etx20˜Etx29.

In the embodiment shown in FIG. 2 , the driving circuit 130 includes an amplifying circuit 131 and a processor 132 . The input end of the amplifier circuit 131 is coupled to the receiving electrode Erx21 (the first common receiving electrode) to receive signals from the receiving electrode Erx21 at different time points. The processor 132 is coupled to the output terminal of the amplifier circuit 131 . The processor 132 outputs the AC signal Sac to the emitter electrodes Etx20˜Etx29 (the first emitter electrode) at different time points. The processor 132 determines the motion state of the sensing electrode Es21 (first sensing electrode) based on the amplified signals of the amplifying circuit 131 at different time points. For example, assume that the processor 132 outputs the AC signal Sac to the emitter electrode Etx20 at the first time point, and by analogy, the processor 132 outputs the AC signal Sac to the emitter electrode Etx29 at the 10th time point. Taking the operation scenario shown in Figure 2 as an example, the sensing electrode Es21 moves above the seventh transmitting electrode among the transmitting electrodes Etx20 to Etx29, so the amplified signal received by the processor 132 will have maximum sensing at the seventh time point. value. Based on this, the processor 132 can determine that the motion state of the sensing electrode Es21 is "the sensing electrode Es21 is above the seventh transmitting electrode".

In other embodiments, when the signal strength of the receiving electrode Erx21 is sufficient, the amplifying circuit 131 may be omitted based on actual design. In such an embodiment, the processor 132 may be connected to the receiving electrode Erx21 to receive signals from the receiving electrode Erx21 at different time points.

3 is a schematic top view of the sensing electrodes Es31 to Es32, the receiving electrode Erx31, the transmitting electrodes Etx31_1 to Etx31_13, and the transmitting electrodes Etx32_1 to Etx32_5 according to another embodiment of the present invention. The sensing electrodes Es31~Es32 shown in Figure 3 can be used as an implementation example of the sensing electrode Es1 shown in Figure 1. The receiving electrode Erx31 shown in Figure 3 can be used as an implementation example of the receiving electrode Erx1 shown in Figure 1. The transmitting electrode shown in Figure 3 The electrodes Etx31_1 to Etx31_13 and the emitter electrodes Etx32_1 to Etx32_5 can be used as an implementation example of the emitter electrode Etx1 shown in FIG. 1 . It should be noted that the specific numbers of the emitter electrodes Etx31_1 to Etx31_13 and the emitter electrodes Etx32_1 to Etx32_5 shown in Figure 3 can be determined according to the actual design. The transmitting electrodes Etx31_1 to Etx31_13 and Etx32_1 to Etx32_5 are arranged beside the receiving electrode Erx31 along the long axis direction of the receiving electrode Erx31, as shown in Figure 3 .

Based on the contact (control behavior) of the user 10, the sensing electrodes Es31 and Es32 can move along the long axis direction of the receiving electrode Erx31 (the left and right direction in Figure 3). During the movement of the sensing electrode Es31, one end of the sensing electrode Es31 remains above the receiving electrode Erx31, and the other end of the sensing electrode Es31 selectively moves to these transmitting electrodes Etx31_1 to Etx31_13 (the first transmitting electrode). above one. During the movement of the sensing electrode Es32, one end of the sensing electrode Es32 remains above the receiving electrode Erx31, and the other end of the sensing electrode Es32 selectively moves to these transmitting electrodes Etx32_1~Etx32_5 (second transmitting electrode). above one.

Referring to FIGS. 1 and 3 , the driving circuit 130 is coupled to the receiving electrode Erx31 (the first common receiving electrode), the transmitting electrodes Etx31_1 to Etx31_13 (the first transmitting electrodes), and the transmitting electrodes Etx32_1 to Etx32_5 (the second transmitting electrode). The driving circuit 130 outputs the AC signal Sac to the emitter electrodes Etx31_1˜Etx31_13 and Etx32_1˜Etx32_5 at different time points. The driving circuit 130 can determine the motion states of the sensing electrodes Es31 and Es32 based on the signals of the receiving electrode Erx31 at different time points.

The state of the receiving electrode Erx31 (the first common receiving electrode), the transmitting electrodes Etx31_1 to Etx31_13 (the first transmitting electrode), and the transmitting electrodes Etx32_1 to Etx32_5 (the second transmitting electrode) shown in FIG. 3 will be further explained. One end of the sensing electrode Es31 remains above the receiving electrode Erx31, and the other end of the sensing electrode Es31 moves to one or two adjacent transmitting electrodes (such as the transmitting electrode Etx31_2) of these transmitting electrodes Etx31_1~Etx31_13 (the first transmitting electrode). with Etx31_3). The driving circuit 130 can detect the two adjacent transmitting electrodes (emitting electrodes Etx31_2 and Etx31_3) through the receiving electrode Erx31 and the sensing electrode Es31 at different points in time, and obtain the values corresponding to these adjacent emitter electrodes (emitting electrodes Etx31_2 and Etx31_3). Multiple signal strength values. The driving circuit 130 can calculate the position of the sensing electrode Es31 according to the proportional relationship between these signal intensity values.

Furthermore, one end of the sensing electrode Es32 remains above the receiving electrode Erx31, and the other end of the sensing electrode Es32 moves to one or two adjacent transmitting electrodes (second transmitting electrodes) Etx32_1 to Etx32_5 (second transmitting electrodes). For example, above the emitter electrode Etx32_3). The driving circuit 130 can determine the position and motion state of the sensing electrode Es32 based on the signals of the receiving electrode Erx32 at different time points.

FIG. 4 is a schematic top view of the sensing electrode Es41, the receiving electrode Erx41, the transmitting electrodes Etx41_1˜Etx41_8, and the transmitting electrodes Etx41_9˜Etx41_16, according to another embodiment of the present invention. The sensing electrode Es41 shown in Figure 4 can be used as an implementation example of the sensing electrode Es1 shown in Figure 1, the receiving electrode Erx41 shown in Figure 4 can be used as an implementation example of the receiving electrode Erx1 shown in Figure 1, and the transmitting electrode Etx41_1 shown in Figure 4 ~Etx41_16 can be used as an implementation example of the emitter electrode Etx1 shown in Figure 1. It should be noted that the specific number of the emitter electrodes Etx41_1 to Etx41_16 shown in Figure 4 can be determined according to the actual design.

In the embodiment shown in FIG. 4 , the receiving electrode Erx41 (first common receiving electrode) is configured in a curved shape. Based on the contact (control behavior) of the user 10, the sensing electrode Es41 (the first sensing electrode) moves along the curve, that is, moves along the receiving electrode Erx41. The transmitting electrodes Etx41_1 to Etx41_16 (first transmitting electrodes) are arranged along the curve beside the receiving electrode Erx41, as shown in Figure 4. During the movement of the sensing electrode Es41, the sensing electrode Es41 remains above the receiving electrode Erx41, and the sensing electrode Es41 selectively moves above one (or more of) the transmitting electrodes Etx41_1˜Etx41_16. Referring to FIG. 1 and FIG. 4 , the driving circuit 130 is coupled to the receiving electrode Erx41 and the transmitting electrodes Etx41_1˜Etx41_16. The driving circuit 130 outputs the AC signal Sac to the emitter electrodes Etx41_1˜Etx41_16 at different time points. The driving circuit 130 can determine the motion state of the sensing electrode Es41 based on the signals of the receiving electrode Erx41 at different time points.

FIG. 5 is a schematic top view of the sensing electrode Es51, the receiving electrode Erx51 and the transmitting electrodes Etx51_1˜Etx51_16 according to yet another embodiment of the present invention. The sensing electrode Es51 shown in Figure 5 can be used as an implementation example of the sensing electrode Es1 shown in Figure 1, the receiving electrode Erx51 shown in Figure 5 can be used as an implementation example of the receiving electrode Erx1 shown in Figure 1, and the transmitting electrode Etx51_1 shown in Figure 5 ~Etx51_16 can be used as an implementation example of the emitter electrode Etx1 shown in Figure 1. It should be noted that the specific number of the emitter electrodes Etx51_1 to Etx51_16 shown in Figure 5 can be determined according to the actual design.

In the embodiment shown in FIG. 5 , the sensing electrode Es51 (first sensing electrode) is disposed on the knob portion (user contact portion 110 ) of the human-machine interface device 100 . The knob portion is configured to rotate above the detection plate 120 based on the contact of the user 10 . The receiving electrode Erx51 (first common receiving electrode) is configured as a circular line surrounding the rotation axis AR51 of the knob portion, as shown in FIG. 5 . Based on the contact (control behavior) of the user 10, during the rotation of the knob portion, the sensing electrode Es51 moves along the circular line, that is, rotates along the receiving electrode Erx51. The transmitting electrodes Etx51_1 to Etx51_16 (first transmitting electrodes) are arranged along a circular line beside the receiving electrode Erx51, as shown in Figure 5.

During the rotation of the sensing electrode Es51, the sensing electrode Es51 remains above the receiving electrode Erx51, and the sensing electrode Es41 selectively moves above one (or more of) the transmitting electrodes Etx51_1˜Etx51_16. Referring to FIG. 1 and FIG. 5 , the driving circuit 130 is coupled to the receiving electrode Erx51 and the transmitting electrodes Etx51_1˜Etx51_16. The driving circuit 130 outputs the AC signal Sac to the emitter electrodes Etx51_1˜Etx51_16 at different time points. The driving circuit 130 can determine the motion state of the sensing electrode Es51 based on the signals of the receiving electrode Erx51 at different time points.

FIG. 6A is a three-dimensional schematic diagram of the user contact portion 110 according to an embodiment of the present invention. The user contact part 110 shown in FIG. 6A includes a knob part 111, a knob part 112 and a knob part 113. The knob portions 111 , 112 and 113 are configured to be independently rotatable above the detection plate 120 based on the contact of the user 10 . Figure 6B is a diagram according to yet another embodiment of the present invention. The sensing electrode Es61, the sensing electrode Es62, the sensing electrode Es63, the receiving electrode Erx61, the receiving electrode Erx62, the receiving electrode Erx63, the transmitting electrode Etx61, the transmitting electrode Etx62 and the transmitting electrode Etx63 A top view diagram. The sensing electrodes Es61~Es63 shown in Figure 6A and Figure 6B can be used as an implementation example of the sensing electrode Es1 shown in Figure 1. The receiving electrodes Erx61~Erx63 shown in Figure 6A and Figure 6B can be used as an implementation example of the receiving electrode Erx1 shown in Figure 1. Example, and the emitter electrodes Etx61 to Etx63 shown in FIGS. 6A and 6B can be used as an implementation example of the emitter electrode Etx1 shown in FIG. 1 .

In the embodiment shown in FIG. 6A and FIG. 6B , the sensing electrode Es61 is disposed on the knob part 111 , the sensing electrode Es62 is disposed on the knob part 112 , and the sensing electrode Es63 is disposed on the knob part 113 . The sensing electrode Es61, the receiving electrode Erx61 and the transmitting electrode Etx61 shown in Figure 6B can be referred to the description of the sensing electrode Es51, the receiving electrode Erx51 and the transmitting electrodes Etx51_1 to Etx51_16 shown in Figure 5 and can be deduced by analogy. During the rotation of the knob portion 111, the sensing electrode Es61 can move along the receiving electrode Erx61. The sensing electrode Es62, the receiving electrode Erx62 and the transmitting electrode Etx62 shown in FIG. 6B can be described with reference to the sensing electrode Es51, the receiving electrode Erx51 and the transmitting electrodes Etx51_1 to Etx51_16 shown in FIG. 5 and analogized. During the rotation of the knob portion 112, the sensing electrode Es62 can move along the receiving electrode Erx62. The sensing electrode Es63, the receiving electrode Erx63 and the transmitting electrode Etx63 shown in Figure 6B can be referred to the description of the sensing electrode Es51, the receiving electrode Erx51 and the transmitting electrodes Etx51_1 to Etx51_16 shown in Figure 5 and can be deduced by analogy. During the rotation of the knob portion 113, the sensing electrode Es63 can move along the receiving electrode Erx63.

FIG. 7A is an exploded schematic diagram of the user contact portion 110 and the detection plate 120 according to an embodiment of the present invention. In the embodiment shown in FIG. 7A , the user contact part 110 includes the sensing electrode Es71 and the sensing electrode Es72, and the detection plate 120 includes the receiving electrode Erx71 and the transmitting electrodes Etx71˜Etx76. The sensing electrodes Es71-Es72 are set to be electrically floating, that is, the sensing electrodes Es71-Es72 do not have physical electrical contact with the receiving electrodes Erx71 and the transmitting electrodes Etx71-Etx76. The sensing electrodes Es71~Es72 shown in Figure 7A can be used as an implementation example of the sensing electrode Es1 shown in Figure 1. The receiving electrode Erx71 shown in Figure 7A can be used as an implementation example of the receiving electrode Erx1 shown in Figure 1. The transmitting electrode shown in Figure 7A The electrodes Etx71 to Etx76 can be used as an implementation example of the emitter electrode Etx1 shown in Figure 1 . In the embodiment shown in FIG. 7A , the user contact portion 110 can be used as the scroll wheel portion of the human-machine interface device 100 . The induction electrodes Es71 to Es72 are arranged on the roller part (user contact part 110). The roller part is configured to rotate above the vertical normal direction of the detection plate 120 (ie, the right side of FIG. 7A ) based on the contact of the user 10 . For example, the human-machine interface device 100 may be a mouse, and the scroll wheel part may be a scroll wheel on the mouse. In order to comply with current mouse usage habits and mechanism design, the detection plate 120 does not cover the entire scroll wheel portion. For example, the detection area of the detection plate 120 only covers part of the roller part (about 2/3˜3/4).

7B to 7D are schematic top views of the sensing electrode Es71, the sensing electrode Es72, the receiving electrode Erx71, and the transmitting electrodes Etx71-Etx76 according to an embodiment of the present invention. Referring to FIGS. 7A to 7D , the receiving electrode Erx71 (common receiving electrode) is arranged on the detection plate 120 based on the rotation axis AR71 of the roller part (user contact part 110 ). The transmitting electrodes Etx71 to Etx76 (first transmitting electrodes) are arranged beside the receiving electrode Erx71, as shown in Figures 7A to 7D. 7B to 7D illustrate the process in which the sensing electrodes Es71 to Es72 move above the receiving electrode Erx71 during the rotation of the roller part (user contact part 110). During the rotation of the roller part, at least one of the sensing electrodes Es71 to Es72 (the first sensing electrode and the second sensing electrode) moves above the receiving electrode Erx71.

Table 1 below shows the positions of the sensing electrodes Es71 to Es72 at different time points during the forward rotation (clockwise rotation) of the roller part. At time point T1 in Table 1, the positions of the sensing electrodes Es71 and Es72 are above the emission electrodes Etx71 and Etx76 respectively (as shown in Figure 7B). At time point T2 in Table 1, the position of the sensing electrode Es71 is above the emission electrode Etx72 and the sensing electrode Es72 exceeds the detection area of the detection plate 120 (as shown in FIG. 7C ). At time point T3 in Table 1, the position of the sensing electrode Es71 is above the emission electrode Etx73 and the sensing electrode Es72 exceeds the detection area of the detection plate 120. At time point T4 in Table 1, the positions of the sensing electrodes Es71 and Es72 are above the emission electrodes Etx74 and Etx71 respectively. At time point T5 in Table 1, the positions of the sensing electrodes Es71 and Es72 are above the emission electrodes Etx75 and Etx72 respectively (as shown in Figure 7D). At time point T6 in Table 1, the positions of the sensing electrodes Es71 and Es72 are above the emission electrodes Etx76 and Etx73 respectively. At time point T7 in Table 1, the position of the sensing electrode Es71 exceeds the detection area of the detection plate 120 and the sensing electrode Es72 is above the emission electrode Etx74. At time point T8 in Table 1, the position of the sensing electrode Es71 exceeds the detection area of the detection plate 120 and the sensing electrode Es72 is above the emission electrode Etx75. Table 1: Forward rotation sequence time point T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 Es71 location Etx71 Etx72 Etx73 Etx74 Etx75 Etx76 Etx71 Etx72 Es72 location Etx76 Etx71 Etx72 Etx73 Etx74 Etx75 Etx76

Table 2 below shows the positions of the sensing electrodes Es71 to Es72 at different time points during the reversal (counterclockwise rotation) of the roller part. At time point T1 in Table 2, the positions of the sensing electrodes Es71 and Es72 are above the emission electrodes Etx71 and Etx76 respectively (as shown in Figure 7B). At time point T2 in Table 2, the position of the sensing electrode Es71 exceeds the detection area of the detection plate 120 and the sensing electrode Es72 is above the emission electrode Etx75. At time point T3 in Table 2, the position of the sensing electrode Es71 exceeds the detection area of the detection plate 120 and the sensing electrode Es72 is above the emission electrode Etx74. At time point T4 in Table 2, the positions of the sensing electrodes Es71 and Es72 are above the emission electrodes Etx76 and Etx73 respectively. At time point T5 in Table 2, the positions of the sensing electrodes Es71 and Es72 are above the emission electrodes Etx75 and Etx72 respectively (as shown in Figure 7D). At time point T6 in Table 2, the positions of the sensing electrodes Es71 and Es72 are above the emission electrodes Etx74 and Etx71 respectively. At time point T7 in Table 2, the position of the sensing electrode Es71 is above the emission electrode Etx73 and the sensing electrode Es72 exceeds the detection area of the detection plate 120 . At time point T8 in Table 2, the position of the sensing electrode Es71 is above the emission electrode Etx72 and the sensing electrode Es72 exceeds the detection area of the detection plate 120 (as shown in FIG. 7C ). Table 2: Reversal of order time point T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 Es71 location Etx71 Etx76 Etx75 Etx74 Etx73 Etx72 Etx71 Es72 location Etx76 Etx75 Etx74 Etx73 Etx72 Etx71 Etx76 Etx75

As shown in Table 1 and Table 2 above, the receiving electrode Erx71 of the detection board 120 can detect the signal of at least one sensing electrode Es71˜Es72 at any time. Therefore, in the embodiment shown in FIGS. 7A to 7D , the driving circuit 130 can know the positions of the roller portion sensing electrodes Es71 to Es72 at any time. The positions of the sensing electrodes Es71 to Es72 are coupled with the time interval information, and the driving circuit 130 can know the direction and speed of the rotation of the roller part (user contact part 110).

8 is a schematic top view of the sensing electrode Es81, the sensing electrode Es82, the receiving electrode Erx81, the receiving electrode Erx82, the transmitting electrodes Etx81_1˜Etx81_6, and the transmitting electrodes Etx82_1˜Etx82_6, according to another embodiment of the present invention. The sensing electrode Es81 (the first sensing electrode) and the sensing electrode Es82 (the second sensing electrode) are arranged not to have physical electrical contact with the receiving electrodes Erx81~Erx82, the transmitting electrodes Etx81_1~Etx81_6 and the transmitting electrodes Etx82_1~Etx82_6 on the detection board 120 . The induction electrodes Es81 and Es82 are arranged on the roller part (user contact part 110). The roller part is configured to rotate above the vertical normal direction of the detection plate 120 based on the contact of the user 10 . The induction electrodes Es81 to Es82 shown in Figure 8 can be referred to the relevant description of the induction electrodes Es71 to Es72 shown in Figures 7A to 7D and by analogy. The receiving electrodes Erx81 and the transmitting electrodes Etx81_1 to Etx81_6 shown in Figure 8 can be referred to Figures 7A to 7D The description of the receiving electrode Erx71 and the transmitting electrodes Etx71 ~ Etx76 shown and by analogy, as well as the receiving electrode Erx82 and the transmitting electrodes Etx82_1 ~ Etx82_6 shown in Figure 8 can refer to the receiving electrode Erx71 and the transmitting electrode Etx71 ~ Etx76 shown in Figures 7A to 7D related explanations and analogies, so they will not be repeated.

Referring to FIG. 8 , the receiving electrode Erx81 (first common receiving electrode) and the receiving electrode Erx82 (second common receiving electrode) are arranged on the detection plate 120 based on the rotation axis AR81 of the roller part (user contact part 110 ). The transmitting electrodes Etx81_1 to Etx81_6 (first transmitting electrodes) are arranged next to the receiving electrode Erx81, and the transmitting electrodes Etx82_1 to Etx82_6 (second transmitting electrodes) are arranged next to the receiving electrode Erx82, as shown in Figure 8 . During the rotation of the roller part (user contact part 110), the sensing electrode Es81 can move above the receiving electrode Erx81, and/or the sensing electrode Es82 can move above the receiving electrode Erx82. At least one of the receiving electrode Erx81 and the receiving electrode Erx82 of the detection board 120 can detect the signal of at least one sensing electrode Es81˜Es82 at any time. Therefore, in the embodiment shown in FIG. 8 , the driving circuit 130 can know the positions of the roller portion sensing electrodes Es81 to Es82 at any time, and thereby confirm the absolute position of the roller portion (user contact portion 110 ). In addition, the position of the sensing electrodes Es81 to Es82 is coupled with the time interval information, and the driving circuit 130 can also know the direction and speed of the rotation of the roller part (user contact part 110).

FIG. 9A is a schematic three-dimensional view of the user contact portion 110 and the detection board 120 according to another embodiment of the present invention. In the embodiment shown in FIG. 9A , the user contact part 110 includes a plurality of sensing electrodes (such as Es91_1 to Es91_4 and Es92_1 to Es92_4), and the detection plate 120 includes a receiving electrode Erx91 (first receiving electrode), a receiving electrode Erx92 ( second receiving electrode) and transmitting electrode Etx91 (common transmitting electrode). The sensing electrodes Es91_1~Es91_4 and Es92_1~Es92_4 shown in Figure 9A can be used as an implementation example of the sensing electrode Es1 shown in Figure 1, and the receiving electrodes Erx91 and Erx92 in Figure 9A can be used as an implementation example of the receiving electrode Erx1 shown in Figure 1, and The emitter electrode Etx91 shown in FIG. 9A can be used as an implementation example of the emitter electrode Etx1 shown in FIG. 1 .

Please refer to FIG. 9A. The receiving electrodes Erx91 and Erx92 are located on different sides of the transmitting electrode Etx91. The receiving electrode Erx91 is located next to the first end of the transmitting electrode Etx91, and the receiving electrode Erx92 is located next to the second end of the transmitting electrode Etx91, as shown in FIG. 9A. The sensing electrodes Es91_1 to Es91_4 and Es92_1 to Es92_4 are configured not to have physical electrical contact with the receiving electrodes Erx91 to Erx92 and the transmitting electrode Etx91 on the detection board 120 . In the embodiment shown in FIG. 9A , the user contact portion 110 can be used as the scroll wheel portion of the human-machine interface device 100 . The induction electrodes Es91_1 to Es91_4 and Es92_1 to Es92_4 are arranged on the roller part (user contact part 110). The roller part is provided to roll over the emission electrode Etx91 (detection plate 120) based on the contact of the user 10. For example, the human-machine interface device 100 may be a mouse, and the scroll wheel part may be a scroll wheel on the mouse. During the rolling process of the roller part, the sensing electrodes Es91_1 to Es91_4 take turns to move above the receiving electrode Erx91 and the transmitting electrode Etx91, and the sensing electrodes Es92_1 to Es92_4 take turns to move above the receiving electrode Erx92 and the transmitting electrode Etx91.

9B is a schematic top view of the sensing electrodes (such as Es91_1 to Es91_4 and Es92_1 to Es92_4), the receiving electrode Erx91, the receiving electrode Erx92 and the transmitting electrode Etx91 according to an embodiment of the present invention. Please refer to FIGS. 9A to 9B . During the rolling process of the roller part (user contact part 110 ), the sensing electrodes Es91_1 to Es91_4 and Es92_1 to Es92_4 take turns moving above the emission electrode Etx91. Based on the AC signal emitted by the transmitting electrode Etx91, the driving circuit 130 can detect the receiving electrode Erx91 or the receiving electrode Erx92 first detects the AC signal, and then determines the rotation direction (forward or reverse rotation) of the roller part (user contact part 110). Turn). The rotation direction of the roller part is coupled with the time interval information, and the driving circuit 130 can know the rolling speed of the roller part.

FIG. 10 is a schematic three-dimensional view of the user contact portion 110 according to yet another embodiment of the present invention. The user contact part 110 shown in FIG. 10 includes a knob part 114 and a roller part 115. The roller part 115 is provided in the middle of the knob part 114. The knob portion 114 is configured to rotate above the detection plate 120 based on the contact of the user 10 . The roller part 115 is configured to roll above the detection plate 120 based on the contact of the user 10 . The user contact portion 110 shown in FIG. 10 can be used as an implementation example of the user contact portion 110 shown in FIG. 1 . The knob portion 114 and the detection plate 120 shown in Figure 10 can be referred to the relevant descriptions of the embodiment shown in Figure 5, Figure 6A and/or Figure 6B and by analogy. The roller portion 115 and the detection plate 120 shown in Figure 10 can be referred to Figure 10. The relevant descriptions of the embodiments shown in FIG. 9A and FIG. 9B are analogized and therefore will not be described again.

FIG. 11A is a schematic top view of a sensing electrode, a receiving electrode, and a transmitting electrode according to another embodiment of the present invention. In the embodiment shown in FIG. 11A , the user contact part 110 includes a sensing electrode Es111, and the detection plate 120 includes a plurality of receiving electrodes (such as Erx111, Erx112, Erx113 and Erx114) and a transmitting electrode Etx111 (common transmitting electrode). The sensing electrode Es111 shown in Figure 11A can be used as an implementation example of the sensing electrode Es1 shown in Figure 1. The receiving electrodes Erx111~Erx114 shown in Figure 11A can be used as an implementation example of the receiving electrode Erx1 shown in Figure 1, and the transmitting electrode shown in Figure 11A Etx111 can be used as an implementation example of the emitter electrode Etx1 shown in Figure 1 .

Referring to FIG. 1 and FIG. 11A , the sensing electrode Es111 is configured not to have physical electrical contact with the transmitting electrode Etx111 and the receiving electrodes Erx111 - Erx114 on the detection board 120 . The sensing electrode Es111 is arranged on the user contact portion 110 of the human-machine interface device 100 . Based on the contact of the user 10 , the sensing electrode Es111 (user contact part 110 ) moves above the emission electrode Etx111 (detection plate 120 ). The receiving electrodes Erx111 to Erx114 surround the transmitting electrode Etx111, as shown in Figure 11A. During the movement of the sensing electrode Es111, the sensing electrode Es111 remains above the transmitting electrode Etx111, and the sensing electrode Es111 selectively moves above one (or more) of the receiving electrodes Erx111˜Erx114. The driving circuit 130 outputs the AC signal Sac to the transmitting electrode Etx111, and determines the motion state of the sensing electrode Es111 based on the signals of the receiving electrodes Erx111˜Erx114.

11B to 11C are schematic top views of the sensing electrode Es111 stacked above the emitter electrode Etx111 according to an embodiment of the present invention. Please refer to Figure 1, Figure 11A and Figure 11B. Based on the contact of the user 10, the sensing electrode Es111 (user contact portion 110) can move to the upper left direction, so that the sensing electrode Es111 overlaps above the receiving electrodes Erx111 and Erx114. At this time, the AC signal Sac output by the transmitting electrode Etx111 can be transmitted to the receiving electrodes Erx111 and Erx114 through the sensing electrode Es111. Please refer to Figure 1, Figure 11A and Figure 11C. Based on the contact of the user 10, the sensing electrode Es111 (user contact part 110) can move to the lower right direction, so that the sensing electrode Es111 overlaps above the receiving electrodes Erx112 and Erx113. At this time, the AC signal Sac output by the transmitting electrode Etx111 can be transmitted to the receiving electrodes Erx112 and Erx113 through the sensing electrode Es111. The driving circuit 130 can detect the signal strength of the receiving electrodes Erx111˜Erx114. When the sensing electrode Es111 spans multiple adjacent receiving electrodes (such as receiving electrodes Erx111 and Erx114), the driving circuit 130 can detect the transmitting electrode Etx111 through the adjacent receiving electrodes Erx111 and Erx114 and the sensing electrode Es111 to obtain the adjacent receiving electrode Erx111 Multiple signal strength values corresponding to Erx114. The driving circuit 130 can calculate the position of the sensing electrode Es111 shown in FIG. 11B according to the proportional relationship between the signal strength values of the adjacent receiving electrodes Erx111 and Erx114, and then determine the moving direction of the sensing electrode Es111 (user contact part 110) and distance. By the same token, the driving circuit 130 can calculate the position of the sensing electrode Es111 shown in FIG. 11C according to the proportional relationship between the signal intensity values of the adjacent receiving electrodes Erx112 and Erx113. The embodiments shown in FIGS. 11A to 11C can be applied to control the mouse trajectory, or as a universal selection device.

To sum up, the sensing electrodes described in the above embodiments can move above the detection plate 120 based on the contact of the user 10 (the manipulation behavior of the user 10). The driving circuit 130 outputs the AC signal Sac to the emitter electrode. When the sensing electrode moves above the transmitting electrode and the receiving electrode, the sensing electrode and the transmitting electrode form a parallel plate capacitance, and the sensing electrode and the receiving electrode form another parallel plate capacitance. Therefore, when the sensing electrode moves above the transmitting electrode and the receiving electrode, the AC signal from the transmitting electrode can be transmitted to the receiving electrode through the sensing electrode. The driving circuit receives the signal from the receiving electrode to determine the motion state of the sensing electrode (the control behavior of the user 10).

Although the present invention has been disclosed above through embodiments, they are not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the appended patent application scope.

10:User 100: Human-machine interface device 110:User Contact Department 111, 112, 113, 114: Knob part 115:Roller part 120:Detection board 130:Drive circuit 131: Amplification circuit 132: Processor AR51, AR71: Rotation axis Erx1, Erx21, Erx31, Erx41, Erx51, Erx61, Erx62, Erx63, Erx71, Erx81, Erx82, Erx91, Erx92, Erx111, Erx112, Erx113, Erx114: receiving electrode Es1, Es21, Es31, Es32, Es41, Es51, Es61, Es62, Es63, Es71, Es72, Es81, Es82, Es91_1, Es91_2, Es91_3, Es91_4, Es92_1, Es92_2, Es92_3, Es92_4, Es111 :sensing electrode Etx1, Etx20, Etx29, Etx31_1, Etx31_13, Etx32_1, Etx32_5, Etx41_1, Etx41_8, Etx41_9, Etx41_16, Etx51_1, Etx51_16, Etx61, Etx62, Etx63, Etx71, Etx72, Etx76, Etx74, Etx75, Etx76, Etx81_1, Etx81_6, Etx82_1, Etx82_6, Etx91, Etx111: emitter electrode Sac: communication signal Ss: signal

FIG. 1 is a circuit block schematic diagram of a human-machine interface device according to an embodiment of the present invention. FIG. 2 is a circuit block diagram of a driving circuit according to an embodiment of the present invention. FIG. 3 is a schematic top view of a sensing electrode, a receiving electrode and a transmitting electrode according to another embodiment of the present invention. FIG. 4 is a schematic top view of a sensing electrode, a receiving electrode and a transmitting electrode according to another embodiment of the present invention. FIG. 5 is a schematic top view of a sensing electrode, a receiving electrode and a transmitting electrode according to yet another embodiment of the present invention. FIG. 6A is a three-dimensional schematic diagram of a user contact portion according to an embodiment of the present invention. FIG. 6B is a schematic top view of a sensing electrode, a receiving electrode, and a transmitting electrode according to yet another embodiment of the present invention. FIG. 7A is an exploded schematic diagram of the user contact part and the detection plate according to an embodiment of the present invention. 7B to 7D are schematic top views of sensing electrodes, receiving electrodes and transmitting electrodes according to an embodiment of the present invention. 8 is a schematic top view of a sensing electrode, a receiving electrode and a transmitting electrode according to another embodiment of the present invention. FIG. 9A is a schematic three-dimensional view of the user contact portion and the detection board according to another embodiment of the present invention. FIG. 9B is a schematic top view of a sensing electrode, a receiving electrode, and a transmitting electrode according to an embodiment of the present invention. FIG. 10 is a schematic three-dimensional view of the user contact portion according to yet another embodiment of the present invention. FIG. 11A is a schematic top view of a sensing electrode, a receiving electrode, and a transmitting electrode according to another embodiment of the present invention. 11B to 11C are schematic top views of the sensing electrode stacked above the emitter electrode according to an embodiment of the present invention.

10:User

100: Human-machine interface device

110:User Contact Department

120:Detection board

130:Drive circuit

Erx1: receiving electrode

Es1: Sensing electrode

Etx1: emitter electrode

Sac: communication signal

Ss: signal

Claims (17)

A human-machine interface device, including: a detection plate; at least one transmitting electrode arranged on the detection plate; at least one receiving electrode arranged on the detection plate; at least one sensing electrode arranged on the human-machine interface A user contact portion of the device, and the user contact portion is configured to move above the detection plate based on a user's contact, wherein the at least one sensing electrode is not in electrical contact with the at least one emitting electrode and the at least one a receiving electrode, and when the at least one sensing electrode moves above the at least one transmitting electrode and the at least one receiving electrode, the at least one sensing electrode transmits an AC signal from the at least one transmitting electrode to the at least one receiving electrode; and a driving circuit coupled to the at least one transmitting electrode and the at least one receiving electrode, wherein the driving circuit outputs the AC signal to the at least one transmitting electrode, and the driving circuit determines the signal based on the at least one receiving electrode. The location of at least one sensing electrode. The human-machine interface device of claim 1, wherein the at least one sensing electrode is not in physical electrical contact with the at least one transmitting electrode, and the at least one sensing electrode is not in physical electrical contact with the at least one receiving electrode. The human-machine interface device according to claim 1, wherein the at least one transmitting electrode includes a plurality of first transmitting electrodes located at different positions of the detection plate, the at least one receiving electrode includes a first common receiving electrode, and the at least one The sensing electrode includes a first sensing electrode, During the movement of the first sensing electrode, the first sensing electrode remains above the first common receiving electrode, and the first sensing electrode selectively moves above one of the first transmitting electrodes; and the The driving circuit outputs the AC signal to the first transmitting electrodes at different time points, and determines a first motion state of the first sensing electrode based on the signals of the first common receiving electrode at different time points. The human-machine interface device according to claim 3, wherein the driving circuit includes: an amplifier circuit having an input terminal coupled to the first common receiving electrode to receive the first common receiving electrode at different time points. signal; and a processor coupled to an output end of the amplifier circuit, wherein the processor outputs the AC signal to the first emitter electrodes at different time points, and the processor outputs the AC signal to the first emitter electrodes at different time points according to the amplification circuit. The amplified signal is used to determine the first motion state of the first sensing electrode. The human-machine interface device according to claim 3, wherein the first sensing electrode moves along a long axis direction of the first common receiving electrode, and the first transmitting electrodes move along the long axis direction of the first common receiving electrode. The axial direction is arranged beside the first common receiving electrode. The human-machine interface device according to claim 3, wherein the at least one emitting electrode further includes a plurality of second emitting electrodes located at different positions of the detection plate, and the at least one sensing electrode includes a second sensing electrode, and the at least one sensing electrode includes a second sensing electrode. During the movement of the two sensing electrodes, a first of the second sensing electrode A second part of the second sensing electrode is kept above the first common receiving electrode, and a second part of the second sensing electrode selectively moves above one of the second transmitting electrodes; and the driving circuit outputs the AC signal at different time points. Give the second transmitting electrodes, and determine a second motion state of the second sensing electrode based on the signals of the first common receiving electrode at different time points. The human-machine interface device according to claim 6, wherein the second sensing electrode moves along a long axis direction of the first common receiving electrode, and the second transmitting electrodes move along the long axis direction of the first common receiving electrode. The axial direction is arranged beside the first common receiving electrode. The human-machine interface device according to claim 3, wherein the first common receiving electrode is configured as a curve, the first sensing electrode moves along the curve, and the first transmitting electrodes are arranged along the curve on the first next to a common receiving electrode. The human-machine interface device according to claim 3, wherein the first sensing electrode is configured to have no physical electrical contact with the at least one transmitting electrode and the at least one receiving electrode, and the first sensing electrode is configured on the human-machine interface. A first knob portion of the interface device, the first knob portion is configured to rotate above the detection plate based on the user's contact, and the first common receiving electrode is configured to rotate around the first knob portion a first circular line of the shaft, the first sensing electrode moves along the first circular line during the rotation of the first knob part, and the first emitter electrodes are arranged along the first circular line on the first side of the common receiving electrode. The human-machine interface device according to claim 9, wherein the at least one emitter electrode further includes a plurality of second emitter electrodes located at different positions of the detection plate, and the at least one emitter electrode A receiving electrode further includes a second common receiving electrode, the at least one sensing electrode further includes a second sensing electrode, the second sensing electrode is configured to have no physical electrical contact with the at least one transmitting electrode and the at least one receiving electrode. , the second sensing electrode is configured on a second knob part of the human-machine interface device, the second knob part is configured to rotate above the detection plate based on the user's contact, the second common receiving electrode A second circular line configured as a rotation axis surrounding the second knob part, the second sensing electrode moves along the second circular line during the rotation of the second knob part, and the second emitters The electrodes are arranged beside the second common receiving electrode along the second circular line. The human-machine interface device according to claim 3, wherein the at least one sensing electrode further includes a second sensing electrode, the first sensing electrode and the second sensing electrode are configured to interact with the at least one transmitting electrode and the at least one The receiving electrode is not in physical electrical contact. The first sensing electrode and the second sensing electrode are configured on a roller part of the human-machine interface device. The roller part is configured to move on the detection board based on the user's contact. Rotating upward, the first common receiving electrode is arranged on the detection plate based on a rotation axis of the roller part. During the rotation of the roller part, at least one of the first sensing electrode and the second sensing electrode is on The first common receiving electrode moves above, and the first transmitting electrodes are arranged beside the first common receiving electrode. The human-machine interface device according to claim 3, wherein the at least one sensing electrode further includes a second sensing electrode, the first sensing electrode and the second sensing electrode are configured to interact with the at least one transmitting electrode and the at least one The receiving electrode is not in physical electrical contact, and the first sensing electrode and the second sensing electrode are configured on the human-machine interface device. A roller portion is provided, the roller portion is configured to rotate above the detection plate based on the user's contact, and the first common receiving electrode is arranged on the detection plate based on a rotation axis of the roller portion, The first transmitting electrodes are arranged beside the first common receiving electrode. The at least one transmitting electrode further includes a plurality of second transmitting electrodes located at different positions of the detection plate. The at least one receiving electrode further includes a second A common receiving electrode, the second common receiving electrode is arranged on the detection plate based on the rotation axis of the roller part, the second transmitting electrodes are arranged beside the second common receiving electrode, and on the roller part During the rotation process, the first sensing electrode moves above the first common receiving electrode, or the second sensing electrode moves above the second common receiving electrode. The human-machine interface device according to claim 1, wherein the at least one transmitting electrode includes a common transmitting electrode, the at least one receiving electrode includes a first receiving electrode and a second receiving electrode, and the first receiving electrode and the third receiving electrode Two receiving electrodes are located on different sides of the common transmitting electrode, the first receiving electrode is located next to a first end of the common transmitting electrode, the second receiving electrode is located next to a second end of the common transmitting electrode, and the at least one The sensing electrodes include a plurality of first sensing electrodes and a plurality of second sensing electrodes. The first sensing electrodes and the second sensing electrodes are configured to have no physical electrical contact with the at least one transmitting electrode and the at least one receiving electrode. , the first sensing electrodes and the second sensing electrodes are arranged on a roller part of the human-machine interface device, the roller part is configured to roll above the common emission electrode based on the user's contact, and in During the rolling process of the roller part, the first sensing electrodes take turns to move on the The first receiving electrode moves above the common transmitting electrode, and the second sensing electrodes take turns to move above the second receiving electrode and the common transmitting electrode. The human-machine interface device according to claim 1, wherein the at least one transmitting electrode includes a common transmitting electrode, the at least one receiving electrode includes a plurality of receiving electrodes located at different positions of the detection plate, and the at least one sensing electrode includes a A first sensing electrode that remains above the common transmitting electrode during the movement of the first sensing electrode, and the first sensing electrode selectively moves above one of the receiving electrodes; and The driving circuit outputs the AC signal to the common transmitting electrode, and determines a motion state of the first sensing electrode based on the signals of the receiving electrodes. The human-machine interface device according to claim 14, wherein the first sensing electrode is configured to have no physical electrical contact with the at least one transmitting electrode and the at least one receiving electrode, and the first sensing electrode is configured on the human-machine interface. The user contact portion of the interface device is configured to move above the detection plate based on the user's contact, and the receiving electrodes surround the common transmitting electrode. The human-machine interface device of claim 1, wherein when the at least one sensing electrode spans a plurality of adjacent transmitting electrodes, the driving circuit detects the at least one receiving electrode and the at least one sensing electrode at different time points. Some adjacent emitter electrodes are used to obtain a plurality of signal intensity values corresponding to the adjacent emitter electrodes, and the driving circuit obtains the position of the at least one sensing electrode according to the proportional relationship of the signal intensity values. The human-machine interface device of claim 1, wherein when the at least one sensing electrode spans a plurality of adjacent receiving electrodes, the driving circuit detects the at least one emission through the adjacent receiving electrodes and the at least one sensing electrode. electrodes to obtain a plurality of signal strength values corresponding to the adjacent receiving electrodes, and the driving circuit obtains the position of the at least one sensing electrode according to the proportional relationship of the signal strength values.

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