CN109375554B - Metal touch module and electric appliance - Google Patents
Metal touch module and electric appliance Download PDFInfo
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- CN109375554B CN109375554B CN201811471468.3A CN201811471468A CN109375554B CN 109375554 B CN109375554 B CN 109375554B CN 201811471468 A CN201811471468 A CN 201811471468A CN 109375554 B CN109375554 B CN 109375554B
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- 239000002184 metal Substances 0.000 title claims abstract description 73
- 230000006698 induction Effects 0.000 claims description 53
- 239000000463 material Substances 0.000 claims description 3
- 238000003475 lamination Methods 0.000 abstract description 2
- 230000000737 periodic effect Effects 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- MTLMVEWEYZFYTH-UHFFFAOYSA-N 1,3,5-trichloro-2-phenylbenzene Chemical compound ClC1=CC(Cl)=CC(Cl)=C1C1=CC=CC=C1 MTLMVEWEYZFYTH-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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Abstract
The application relates to a metal touch module, including metal panel, insulating layer and the PCB board of lamination in proper order. The insulating layer includes the fretwork district, the PCB board includes sensing area and singlechip. The sensing area is accommodated in the hollowed-out area and at least comprises a first sensing electrode and a second sensing electrode. When a user presses the first sensing electrode and the second sensing electrode successively, the singlechip judges that the current touch operation of the user is a pressing mode or a sliding mode according to the interval time or the signal value difference of the received signals, and then outputs a control instruction corresponding to the judging result according to the judging result. The metal touch module adopts fewer sensing electrodes, can realize richer operation input, and improves user experience.
Description
Technical Field
The present application relates to the field of electrical appliances, and in particular, to an electrical appliance including a metal touch pad.
Background
The existing household appliances and other products are provided with touch areas. The panels of the touch area are classified into a metal panel and a nonmetal panel. Compared with a nonmetal panel, the touch key of the metal panel has the advantages of easy cleaning, fashionable appearance, water resistance, dust resistance, good chemical corrosion resistance and the like. Meanwhile, the metal panel has better sealing performance, and has higher wear resistance and reliability.
The metal panel adopts technologies such as pressure detection and electromagnetic induction detection, and detection of signals of the metal panel is realized through a resistance sensor or an electromagnetic conversion sensor. This is costly to detect the signal. In the prior art, a capacitive touch technology is also provided for detecting signals of the metal panel, so that the capacitive touch technology is relatively low in cost, economical and easy to realize. However, the number of capacitive sensing electrodes corresponding to the number of keys is required for capacitive sensing, and the number of capacitive sensing electrodes increases when the input signal is of a large variety. And too many capacitance sensing electrodes are arranged in a limited touch area, so that the area of the key is easy to be reduced, and the operation is not easy.
Disclosure of Invention
The application provides a capacitive metal touch module, but multiple touch mode of response specifically includes following technical scheme:
the utility model provides a metal touch module, includes metal panel, insulating layer and the PCB board of laminating in proper order, the insulating layer includes the fretwork area, the PCB board includes sensing area and singlechip, the sensing area accept in the fretwork area, including first sensing electrode and second sensing electrode in the sensing area, first sensing electrode is used for transmitting first induction signal to after the response user touch operation singlechip, the second sensing electrode is used for responding to after the user touch operation send the second induction signal to the singlechip, the singlechip is according to first induction signal with interval time or signal value size difference of second induction signal is in order to confirm touch operation type, the singlechip is according to touch judgement type is in order to confirm control command.
The singlechip comprises a self-excitation circuit, and the self-excitation circuit respectively sends alternating current signals to the first induction electrode and the second induction electrode to sense the touch operation of the user.
The single chip microcomputer receives the first sensing signal and then receives the second sensing signal when the touch operation type is in the sliding mode, and the control instruction is a first sliding instruction;
when the singlechip receives the first induction signal after receiving the second induction signal, the control instruction is a second sliding instruction.
The first induction electrode comprises a first end and a second end which are opposite, the second induction electrode comprises a third end and a fourth end which are opposite, a first gap is arranged between the first end and the third end, a second gap is arranged between the second end and the fourth end, the first induction electrode, the first gap, the second induction electrode and the second gap are surrounded to form a hollow closed section, and the closed section is contained in the induction section.
The first end is provided with a first extending section, and the first extending section extends into the third end along the extending direction of the closed section;
the fourth end is provided with a second extending section, and the second extending section extends into the second end along the extending direction of the closed section.
The closed section is annular, and the first sensing electrode and the second sensing electrode are arc-shaped and matched with the annular closed section in shape.
The induction zone further comprises a third induction electrode and a fourth induction electrode, and the first induction electrode, the second induction electrode, the third induction electrode and the fourth induction electrode are distributed in the induction zone in a central symmetry mode.
Wherein the insulating layer is made of rigid materials.
The metal panel is provided with a first mark and a second mark which are respectively corresponding to the first induction electrode and the second induction electrode in position.
The application also relates to an electric appliance, which comprises a touch control area, wherein the metal touch control module is arranged in the touch control area.
The application metal touch module is in through the metal panel of lamination in proper order, including the insulating layer in fretwork district and including the PCB board in response district metal panel with the electric capacity structure has been formed between the response district. Specifically, the induction area comprises a first induction electrode and a second induction electrode, and the PCB further comprises a singlechip electrically connected with the first induction electrode and the second induction electrode respectively. When a user touches the first sensing electrode, the first sensing electrode senses touch operation of the user and transmits a first sensing signal to the singlechip. When a user touches the second sensing electrode, the second sensing electrode senses touch operation of the user and transmits a second sensing signal to the singlechip. In the pressing mode, the singlechip can respectively send corresponding control instructions to the electric appliance according to the first induction signal or the second induction signal so as to realize corresponding function opening or closing. The singlechip can also judge that the current touch operation of the user is a sliding mode according to the interval time or the signal value difference of the first sensing signal and the second sensing signal. In the sliding mode, the singlechip can also send out different control instructions to the electric appliance from the control instructions in the pressing mode, so that the opening or closing of the other function of the electric appliance is realized. Therefore, the metal touch module can obtain richer control instruction output under the arrangement of fewer induction electrodes, simplify the structure in the PCB, enlarge the area of a single induction electrode, and effectively prevent misoperation and improve the reliability of an electric appliance.
Drawings
FIG. 1 is a schematic diagram of a metal touch module according to the present application;
FIG. 2 is a schematic cross-sectional view of a metal touch module according to the present application;
fig. 3 is a schematic view of another embodiment of a PCB board described in the present application;
fig. 4 is a schematic view of another embodiment of a PCB board described in the present application;
fig. 5 is a schematic view of another embodiment of a PCB board described in the present application;
fig. 6 is a schematic diagram of an appliance as described herein.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Please refer to the metal touch module 100 shown in fig. 1 and 2. In the first direction 001, the metal touch module 100 includes a metal panel 10, an insulating layer 20, and a PCB board 30, which are sequentially stacked. The insulating layer 20 is located between the metal panel 10 and the PCB board 30. The insulating layer 20 comprises a hollowed-out area 21, and the PCB 30 comprises an induction area 31 and a singlechip 32. The position of the sensing area 31 corresponds to the position of the hollowed-out area 21, and the sensing area 31 is accommodated in the hollowed-out area 21. I.e. the sensing region 21 is opposite the metal panel 10 through the hollow insulating layer 20. The sensing region 31 includes a first sensing electrode 51 and a second sensing electrode 52. It will be appreciated that the first sensing electrode 51 and the second sensing electrode 52 are also in a spaced-apart opposing relationship with the metal panel 10. Thus, under the excitation condition of the periodic current, the first sensing electrode 51 forms a first capacitance 01 with the metal panel 10 opposite thereto; the metal panel 10 opposite to the second sensing electrode 52 also forms a second capacitor 02. The metal panel 10 of the metal panel 10 opposite to the first sensing electrode 51 refers to a first area 11 of the metal panel 10 opposite to the area of the first sensing electrode 51 along a first direction 001. That is, the first sensing electrode 51 is projected onto the first region 11 of the metal panel 10 along the first direction 001. Accordingly, the second sensing electrode 52 is projected onto the second region 12 of the metal panel 10 along the first direction 001. According to capacitance formula (1):
wherein ε is r Is the dielectric permittivity of the medium; epsilon 0 Is the absolute dielectric constant in vacuum; a is the positive area of the bipolar plate; d is the vertical distance between the two polar plates. It is understood that, taking the first capacitor 01 as an example, the first capacitor 01 will change due to the change of the distance between the first sensing electrode 51 and the metal panel 10 on the premise that the dielectric constant and the absolute dielectric constant are constant, and the facing area (i.e. the first area 11) of the first sensing electrode 51 and the metal panel 10 is constant. Therefore, the metal touch module 100 of the present application has the function of sensing the touch operation of the user due to the above configuration. When a user touches the first area 11, the human body is grounded, and the periodic surge current output from the singlechip 32 passes through the first capacitor 01 to form a passage. And the touch of the user can cause the metal panel 10 to slightly deformSo that the distance between the first region 11 and the first sensing electrode 51 changes, and the first capacitance 01 also changes. The periodic current applied to the first sensing electrode 51 may generate a time change of charge and discharge due to the change of the first capacitance 01. Because the first sensing electrode 51 is electrically connected to the singlechip 32, the singlechip 32 can sense the touched action of the first area 11 through the time variation of the periodic current. That is, the first sensing electrode 51 converts the touch operation into a first sensing signal and transmits the first sensing signal to the singlechip 32 after sensing the touch operation of the user. Similarly, the second sensing electrode 52 can sense the touch operation of the user, and convert the touch operation into a second sensing signal to be sent to the singlechip 32.
The metal touch module 100 is used for inputting instructions of products such as household appliances, remote controllers or mobile terminals in the electrical appliance 200. It will be appreciated that, according to the interval time or the difference value between the first sensing signal and/or the second sensing signal sensed by the singlechip 32, what type of touch operation is adopted by the user can be determined. For example, after receiving the first sensing signal, the singlechip 32 may send a first instruction to the electrical appliance 200 to implement or turn off a certain function, or adjust the power of the certain function, etc. After receiving the second sensing signal, the singlechip 32 may send a second instruction to the electrical appliance 200 to implement or turn off some other function, or adjust the power of some function, etc. Wherein the corresponding functions of the electric appliance 200 controlled by the first instruction and the second instruction are different, so that the operation input actions of the user on the different functions of the electric appliance 200 are realized. The touch operation type is a pressing mode of the metal touch module 100. The touch operation type of the metal touch module 100 of the present application may further include a sliding mode for sensing a sliding touch operation of a user from the first area 11 to the second area 12. Specifically, after the user touches the first area 11 and the second area 12 sequentially, the singlechip 32 receives the first sensing signal and the second sensing signal sequentially. At this time, a threshold t is preset in the singlechip 32, and the threshold t is a time constant. When the time interval between the first sensing signal and the second sensing signal received by the single-chip microcomputer 32 sequentially falls within the range of the threshold t, the single-chip microcomputer 32 determines that the touch operation of the user on the first area 11 and the second area 12 is a sliding operation, and outputs a first sliding instruction to the electrical appliance according to the sliding operation. It is understood that the corresponding function performed by the appliance 200 according to the first sliding instruction may be different from the corresponding function of the first instruction or the second instruction. Therefore, the metal touch module 100 of the present application can provide more than two control instructions to the electrical appliance on the premise of only providing two sensing electrodes. When the total area of the metal touch module 100 is limited, the metal touch module 100 can realize richer input operations through fewer sensing electrodes. It can be appreciated that a larger touch area can be obtained by a smaller number of sensing electrodes, i.e. the areas of the first area 11 and the second area 12 are larger, which also avoids the defect that the area of each touch area is too small in a limited area, and a user easily touches the metal panel 10 by mistake to generate misoperation input.
It should be noted that, because the metal panel 10 is a rigid body, when the distance between the first area 11 and the second area 12 is short, the user easily causes the second area 12 to deform when touching the first area 11, so that the second sensing electrode 52 also sends the second sensing signal to the singlechip 32. In order to correspond to such an error, another threshold k may be further set in the singlechip 32, where the threshold k is a constant difference between the first sensing signal and the second sensing signal, and when the difference between the strengths of the first sensing signal and the second sensing signal falls within the range of the threshold k, the singlechip 32 may determine that the input of the current user is still in the pressing mode, and send the corresponding instruction to the electrical appliance 200 according to the sensing signal with stronger signal strength.
It can be understood that, when the sliding operation of the user is to slide from the first area 11 to the second area 12, the singlechip 32 receives the first sensing signal and then receives the second sensing signal, and the corresponding sliding input operation is the first sliding instruction. Conversely, when the user slides from the second area 12 to the first area 11, the singlechip 32 receives the second sensing signal and then receives the first sensing signal, and at this time, the corresponding sliding input operation is a second sliding instruction. Such an embodiment further enriches the instruction input modes of the metal touch module 100, has high reliability, and can effectively filter the occurrence of misoperation.
The singlechip 32 is used as a generator of periodic current, and the periodic current needs to be continuously provided to capture touch operation of a user at any time. The periodic current can come from the excitation of the external power supply, and the singlechip 32 can be internally provided with an amplifying circuit to boost the external power supply at the moment so as to improve the initial strength of the first induction signal and the second induction signal and filter interference. In yet another embodiment, a self-exciting circuit is provided in the single chip microcomputer 32, and the self-exciting circuit transmits alternating current signals to the first sensing electrode 51 and the second sensing electrode 52, respectively, to sense a touch operation of a user. The self-oscillating circuit does not need to be excited by an external power supply, and the circuit structure of the PCB 30 can be simplified.
In the embodiment of fig. 3, the first sensing electrode 51 and the second sensing electrode 52 are arranged in an end-to-end configuration. And a gap is provided between the first sensing electrode 51 and the second sensing electrode 52. Specifically, the first sensing electrode 51 includes opposite first and second ends 101, 102, and the second sensing electrode 52 includes opposite third and fourth ends 103, 104. The positions of the first end 101 and the third end 103 correspond, and a first gap 41 is arranged between the first end 101 and the third end 103; the second end 102 and the fourth end 104 are positioned to correspond, and the second gap 42 is spaced between the second end 102 and the fourth end 104. In another manner of description, the first sensing electrode 51, the first gap 41, the second sensing electrode 52 and the second gap 42 enclose a hollow enclosed space 40. It is understood that the enclosed region 40 is accommodated in the sensing region 31. By the arrangement, a relatively obvious interval (namely, the hollow area of the closed interval 40) exists between the first sensing electrode 51 and the second sensing electrode 52, and meanwhile, the existence of the first gap 41 and the second gap 42 can ensure that the interval time between the first sensing signal and the second sensing signal is relatively short when a user needs to perform sliding touch operation, so that the interval time falls within the time threshold t range of the singlechip 32.
In the embodiment of fig. 3, the enclosed section 40 is rectangular. It will be appreciated that in other embodiments, the enclosed space 40 may be any hollow shape. See the embodiment of fig. 4, the enclosed section 40 is arranged in a circular ring shape. Accordingly, the first sensing electrode 51 and the second sensing electrode 52 are each in a circular arc shape matching the shape of the annular closed section 40. In another embodiment, the circular arc-shaped first sensing electrode 51 and second sensing electrode 52 enclose an annular enclosed space 40. Further, the first sensing electrode 51 is further provided with a first protruding section 511 at the first end 101, and the first protruding section 511 protrudes into the third end 103 along the extending direction of the enclosed section 40. After the first extending section 511 extends into the third end 103, when the user slides from the first area 11 to the second area 12 in the sliding touch mode, the finger of the user slides to the position of the first extending section 511 to trigger the first sensing signal and the second sensing signal simultaneously. Of course, according to equation (1), the first capacitor 01 may have a strong-to-weak intensity of the first sensing signal due to the decrease of the corresponding area, and the second capacitor 02 may have a weak-to-strong intensity of the second sensing signal due to the presence of the first protruding section 511. In the region of the first extension 511, the first extension 511 is still separated from the third end 103 by the first gap 41. However, the first sensing signal and the second sensing signal received by the singlechip 32 overlap in time, and the singlechip 32 cannot determine the touch mode of the metal touch module 100 through the threshold t of the time constant. Therefore, the singlechip 32 determines the touch mode by using the difference k between the strengths of the first sensing signal and the second sensing signal in this embodiment. When the first sensing signal is from strong to weak and the second sensing signal is from weak to strong, the singlechip 32 can determine that the current user is performing the input operation in the sliding touch mode. At this time, the singlechip 32 correspondingly sends a first sliding instruction to the electrical appliance 200.
Correspondingly, the second sensing electrode 52 is also provided with a second projecting section 521 at the fourth end 104. The second insertion section 521 protrudes into the second end 02 in the extension direction of the closed region 40. The second extending section 521 has a similar effect to the first extending section 511, and may also enable the first sensing signal and the second sensing signal to have overlapping periods, and enable the first sensing signal and the second sensing signal to be transmitted to the singlechip 32 in a manner of increasing intensity and decreasing intensity respectively. The arrangement can avoid the different operation habits of different users, and the interval time between the first sensing signal and the second sensing signal exceeds the preset time constant threshold t due to the problem of the sliding speed of the fingers during the sliding operation, so that the defect that the single chip microcomputer 32 recognizes the operation input of the user is caused.
Please refer to fig. 5. The embodiment of fig. 5 is a key distribution manner which is currently more commonly used, that is, a distribution manner of a total of four sensing electrodes, wherein the sensing area 31 further includes a third sensing electrode 53 and a fourth sensing electrode 54. The first sensing electrode 51, the second sensing electrode 52, the third sensing electrode 53 and the fourth sensing electrode 54 are distributed in the sensing area 31 in a central symmetrical shape, and each sensing electrode is electrically connected with the singlechip 32. It will be appreciated that in the embodiment shown in fig. 5, in the pressing mode, the first sensing electrode 51, the second sensing electrode 52, the third sensing electrode 53 and the fourth sensing electrode 54 may respectively correspond to the touch commands in the four directions of "up, right, down and left". In the sliding mode, any two adjacent sensing electrodes can be subjected to sliding operation back and forth, and the sliding operation can be corresponding to two sliding instructions. Therefore, after two sensing electrodes are added to the metal touch module 100 of the embodiment of fig. 5, the number of input commands can be at least 12. The number of instructions which can be sent out by the metal touch module 100 is greatly increased by the arrangement mode, and a user can realize richer and finer operation control on the electric appliance 200 when the metal touch module 100 is adopted.
It will be appreciated that in the embodiment of fig. 5, the first sensing electrode 51 may also be provided with a first protruding section 511 protruding into the second sensing electrode 52, while the second sensing electrode 52 is provided with a second protruding section 521 protruding into the third sensing electrode 53, the third sensing electrode is provided with a third protruding section 531 protruding into the fourth sensing electrode 54, and the fourth sensing electrode is provided with a fourth protruding section 541 protruding into the first sensing electrode 51. The manner of sequentially arranging the sensing electrodes with the extending sections extending into the adjacent sensing electrodes is beneficial to the recognition of the single chip microcomputer 32 on the pressing mode or the sliding mode, and misoperation is avoided. Of course, the number of the sensing electrodes is not limited to two or four, and as long as the number of the sensing electrodes is two or more, the single-chip microcomputer 32 can recognize the sliding operation, which falls within the scope of the disclosure of the metal touch module 100.
In one embodiment, in order to make the deformation of the metal panel 10 more controllable, avoiding the larger deformation of the second area 12 after pressing the first area 11, which may interfere with the signal recognition of the singlechip 32, it is desirable to set the material of the insulating layer 20 to be rigid. The rigid insulating layer 20 can control the deformation of the metal panel 10 while preventing the fatigue life from being shortened by excessively deforming the metal panel 10 each time.
In another embodiment, the metal panel 10 is provided with a first mark 61 (not shown) and a second mark 62 (not shown) corresponding to the positions of the first sensing electrode 51 and the second sensing electrode 52, respectively. It will be appreciated that the location of the first indicia 61 is housed within the first region 11, or that the shape of the first indicia 61 matches the first region 11 to inform the user of the specific location and shape of the first region 11. The arrangement can visualize the position of each sensing electrode, and is convenient for the operation input of a user. It can be understood that when the number of the sensing electrodes is plural, the number of the marks is plural, and each mark corresponds to a position of one sensing electrode, so that a user can perform more accurate touch operation.
Referring to fig. 6, the present application also relates to an electrical appliance 200 including a touch area 210. The metal touch module 100 is disposed in the touch area 210. The application of the electrical apparatus 200 can control the area of the touch area 210 on the premise that the metal touch module 100 provides rich touch operation, thereby improving the appearance consistency of the electrical apparatus 200 and enabling a user to obtain more reliable touch operation experience.
The above-described embodiments do not limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the above embodiments should be included in the scope of the present invention.
Claims (9)
1. The metal touch module is characterized by comprising a metal panel, an insulating layer and a PCB (printed circuit board) which are sequentially stacked, wherein the insulating layer comprises a hollowed area, the PCB comprises an induction area and a singlechip, the induction area is accommodated in the hollowed area, the singlechip is positioned outside the hollowed area, the induction area comprises a first induction electrode and a second induction electrode, the first induction electrode is used for transmitting a first induction signal to the singlechip after a user touches the metal panel, the second induction electrode is used for transmitting a second induction signal to the singlechip after the user touches the metal panel, the singlechip determines the touch operation type according to the difference of the interval time or the signal value of the first induction signal and the second induction signal, and the singlechip determines a control instruction according to the determined touch operation type;
the first induction electrode comprises a first end and a second end which are opposite, the second induction electrode comprises a third end and a fourth end which are opposite, a first gap is arranged between the first end and the third end, a second gap is arranged between the second end and the fourth end, the first induction electrode, the first gap, the second induction electrode and the second gap are surrounded to form a hollow closed section, and the closed section is contained in the induction section.
2. The metal touch module of claim 1, wherein the single-chip microcomputer includes a self-exciting circuit that sends alternating current signals toward the first sensing electrode and the second sensing electrode, respectively, to sense the user touch operation.
3. The metal touch module as claimed in claim 2, wherein the touch operation type includes a sliding mode, and when the touch operation type is in the sliding mode, the single-chip microcomputer receives the first sensing signal and then receives the second sensing signal, and the control instruction is a first sliding instruction;
when the singlechip receives the first induction signal after receiving the second induction signal, the control instruction is a second sliding instruction.
4. The metal touch module as claimed in claim 1, wherein the first end is provided with a first extending section, and the first extending section extends into the third end along the extending direction of the enclosed section;
the fourth end is provided with a second extending section, and the second extending section extends into the second end along the extending direction of the closed section.
5. The metal touch module of claim 1, wherein the closed section is annular, and the first sensing electrode and the second sensing electrode are arc-shaped matching the annular shape of the closed section.
6. The metal touch module as recited in any one of claims 1-3, wherein the sensing area further comprises a third sensing electrode and a fourth sensing electrode, and the first sensing electrode, the second sensing electrode, the third sensing electrode and the fourth sensing electrode are distributed in the sensing area in a central symmetry shape.
7. A metal touch module according to any one of claims 1 to 3, wherein the insulating layer is made of a rigid material.
8. A metal touch module according to any one of claims 1 to 3, wherein the metal panel is provided with a first mark and a second mark corresponding to the positions of the first sensing electrode and the second sensing electrode respectively.
9. An electrical appliance, comprising a touch area, wherein the metal touch module according to any one of claims 1 to 8 is arranged in the touch area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811471468.3A CN109375554B (en) | 2018-12-04 | 2018-12-04 | Metal touch module and electric appliance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811471468.3A CN109375554B (en) | 2018-12-04 | 2018-12-04 | Metal touch module and electric appliance |
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| CN109375554A CN109375554A (en) | 2019-02-22 |
| CN109375554B true CN109375554B (en) | 2024-04-09 |
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