CN110597411B - Pressure detection circuit, electronic device, and control method for pressure detection circuit - Google Patents
Pressure detection circuit, electronic device, and control method for pressure detection circuit Download PDFInfo
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- CN110597411B CN110597411B CN201910775820.0A CN201910775820A CN110597411B CN 110597411 B CN110597411 B CN 110597411B CN 201910775820 A CN201910775820 A CN 201910775820A CN 110597411 B CN110597411 B CN 110597411B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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Abstract
The invention provides a pressure detection circuit, an electronic device and a control method of the pressure detection circuit, wherein the pressure detection circuit comprises: the first detection unit is used for sensing acting force in a first direction; the second detection unit is used for sensing the acting force in the second direction; the first detection unit and the second detection unit have different induction parameters corresponding to different acting forces; the first direction and the second direction form a preset angle; the pressure detection chip is respectively connected with the first detection unit and the second detection unit, determines a first pressure parameter in a first direction and a second pressure parameter in a second direction according to the sensing parameter of the first detection unit and the sensing parameter of the second detection unit, and determines whether to output a trigger instruction according to the first pressure parameter and the second pressure parameter. The invention can realize the pressure detection in two directions to determine whether to output the trigger instruction or not, thereby avoiding false triggering.
Description
Technical Field
The present invention relates to the field of electronic technologies, and in particular, to a pressure detection circuit, an electronic device, and a control method for a pressure detection circuit.
Background
At present, the outward appearance of electronic equipment such as cell-phone, flat board is towards simple and integration development, and traditional entity button needs the trompil, destroys the outward appearance wholeness, is being replaced by hidden button gradually. The hidden key realizes the key function, avoids appearance holes, is favorable for waterproof design, and reduces the risk of Electro-Static Discharge (ESD).
However, the hidden key in the related art still transmits the pressure trigger instruction under the action of bending, twisting and other forces, so that the user experience is affected due to serious mistaken touch.
Disclosure of Invention
The invention provides a pressure detection circuit, electronic equipment and a control method of the pressure detection circuit, and aims to solve the problem that a pressure sensor in the prior art has a serious false touch condition.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a pressure detection circuit, including:
the first detection unit is used for sensing acting force in a first direction;
the second detection unit is used for sensing the acting force in the second direction; the first detection unit and the second detection unit have different induction parameters corresponding to different acting forces; the first direction and the second direction form a preset angle;
the pressure detection chip is respectively connected with the first detection unit and the second detection unit, determines a first pressure parameter in a first direction and a second pressure parameter in a second direction according to the sensing parameter of the first detection unit and the sensing parameter of the second detection unit, and determines whether to output a trigger instruction according to the first pressure parameter and the second pressure parameter.
In a second aspect, an embodiment of the present invention provides an electronic device, including: the pressure detection circuit comprises a shell, a processor and the pressure detection circuit;
the pressure detection circuit and the processor are arranged inside the shell, and a pressure detection chip of the pressure detection circuit is connected with the processor.
In a third aspect, an embodiment of the present invention provides a method for controlling a pressure detection circuit, which is applied to the pressure detection circuit, and includes:
acquiring induction parameters of a first detection unit and induction parameters of a second detection unit;
determining a first pressure parameter in a first direction and a second pressure parameter in a second direction according to the induction parameters of the first detection unit and the second detection unit;
and under the condition that the first pressure parameter and the second pressure parameter meet the preset condition, outputting a trigger instruction.
In the embodiment of the invention, the acting force in the first direction is sensed by the at least one first detection unit, the acting force in the second direction is sensed by the at least one second detection unit, the first pressure parameter in the first direction and the second pressure parameter in the second direction are determined by the pressure detection chip according to the sensing parameter of the first detection unit and the sensing parameter of the second detection unit, and whether the trigger instruction is output or not is determined according to the first pressure parameter and the second pressure parameter, so that the pressure detection in the two directions can be realized, the trigger instruction is further determined to be output or not, the condition of false triggering can be avoided, and the user experience is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic diagram of a pressure detection circuit according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a pressure sensing assembly in the pressure detection circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a pressure sensing assembly in a pressure detection circuit according to an embodiment of the present invention;
FIG. 4 is a second schematic diagram of the pressure sensing device in the pressure detection circuit according to the embodiment of the present invention;
fig. 5 is a second schematic structural diagram of a pressure sensing device in the pressure detection circuit according to the embodiment of the invention;
FIG. 6 is a second schematic diagram of the pressure detection circuit according to the embodiment of the present invention;
FIG. 7 is a schematic diagram of an equivalent circuit of a first detecting unit in the pressure detecting circuit according to the embodiment of the invention;
FIG. 8 is a schematic diagram of an equivalent circuit of a second detecting unit in the pressure detecting circuit according to the embodiment of the present invention;
FIG. 9 is a third schematic diagram of a pressure detection circuit according to an embodiment of the present invention;
fig. 10 is a second schematic equivalent circuit diagram of the first detecting unit in the pressure detecting circuit according to the embodiment of the invention;
fig. 11 is a second schematic equivalent circuit diagram of a second detecting unit in the pressure detecting circuit according to the embodiment of the invention;
fig. 12 is a third schematic equivalent circuit diagram of a first detecting unit in the pressure detecting circuit according to the embodiment of the invention;
FIG. 13 is a third schematic diagram of an equivalent circuit of a second detecting unit in the pressure detecting circuit according to the embodiment of the invention;
fig. 14 is a schematic structural diagram of a pressure detection chip in the pressure detection circuit according to the embodiment of the present invention;
FIG. 15 is a schematic diagram of an electronic device according to an embodiment of the invention;
fig. 16 is a schematic circuit diagram of an electronic device according to another embodiment of the invention;
fig. 17 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;
fig. 18 is a second schematic structural diagram of an electronic device according to an embodiment of the invention;
FIGS. 19A-19D are operational diagrams illustrating exemplary operational scenarios provided by embodiments of the present invention;
FIGS. 20A-20E illustrate linear schematics of a first pressure parameter and a second pressure parameter in an exemplary operating scenario provided by an embodiment of the present invention;
fig. 21 is a flowchart illustrating a control method of the pressure detection circuit according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic diagram of a pressure detection circuit according to an embodiment of the present invention.
Referring to fig. 1, an embodiment of the invention provides a pressure detection circuit, which may include: at least one first sensing unit 10, at least one second sensing unit 20, and a pressure sensing chip 30.
The first detection unit 10 is used for sensing an acting force in a first direction; the second detection unit 20 is used for sensing the acting force in the second direction; the first detection unit 10 and the second detection unit 20 have different induction parameters corresponding to different acting forces; the first direction and the second direction form a preset angle. For the sake of simplicity, fig. 1 illustrates one first detecting unit 10 and one second detecting unit 20 as an exemplary illustration, which does not indicate a limitation on the number of the first detecting unit 10 and the second detecting unit 20 disposed in actual use.
The pressure detection chip 30 is connected to the first detection unit 10 and the second detection unit 20, respectively, and the pressure detection chip 30 determines a first pressure parameter in the first direction and a second pressure parameter in the second direction according to the sensing parameter of the first detection unit 10 and the sensing parameter of the second detection unit 20, and determines whether to output a trigger instruction according to the first pressure parameter and the second pressure parameter.
In an embodiment of the present invention, the pressure detection circuit may include at least one first detection unit 10 and at least one second detection unit 20, configured to sense an acting force in a first direction and an acting force in a second direction, respectively, where the first direction and the second direction are different and form a preset angle, and the preset angle may be set based on an actual structural design requirement, and preferably, the preset angle may be 90 degrees, so that the first detection unit 10 and the second detection unit 20 can sense the acting forces in two perpendicular directions. The pressure detection circuit further comprises a pressure detection chip 30, wherein the pressure detection chip 30 is respectively connected with the first detection unit 10 and the second detection unit 20 to respectively obtain the sensing parameters of the first detection unit 10 and the sensing parameters of the second detection unit 20, preset operation processing is performed according to the sensing parameters of the first detection unit 10 and the sensing parameters of the second detection unit 20 to determine a first pressure parameter in a first direction and a second pressure parameter in a second direction, and then the first pressure parameter and the second pressure parameter are compared with a preset threshold to determine whether a trigger instruction is output or not.
The working process of the pressure detection circuit provided by the embodiment of the invention is as follows: when at least one first detection unit 10 and at least one second detection unit 20 in the pressure detection circuit sense an external acting force (such as a pressing force or a torsion force), sensing the acting force in a first direction through the first detection unit 10, and generating corresponding induction parameters based on the sensed acting force in the first direction; sensing the acting force in the second direction through the second detection unit 20, and generating corresponding induction parameters based on the sensed acting force in the second direction; the pressure detection chip 30 obtains the sensing parameter of the first detection unit 10 and the sensing parameter of the second detection unit 20, determines a first pressure parameter in a first direction according to the sensing parameter of the first detection unit 10, and determines a second pressure parameter in a second direction according to the sensing parameter of the second detection unit 20. After determining the first pressure parameter and the second pressure parameter, the pressure detection chip 30 compares the first pressure parameter and the second pressure parameter with a preset threshold, optionally, compares the first pressure parameter with a first preset value M, compares the second pressure parameter with a second preset value N, compares an operation value calculated by a preset algorithm for the first pressure parameter and the second pressure parameter with a target preset value X under the condition that the first pressure parameter is greater than the first preset value M and an absolute value of the second pressure parameter is less than the second preset value N, outputs a trigger instruction if the operation value is greater than the target preset value X, and otherwise determines that the touch is mistaken and the instruction is interrupted. Here, the first preset value M and the second preset value N are both positive values.
In an example, the pressure detection chip 30 may first compare the first pressure parameter with a first preset value, and if the first pressure parameter is greater than the first preset value M, then compare the second pressure parameter with a second preset value N, otherwise, the pressure detection chip determines not to output the trigger instruction; if the absolute value of the second pressure parameter is smaller than a second preset value N, the calculated value of the first pressure parameter and the second pressure parameter calculated according to a preset algorithm is further compared with a target preset value X, otherwise, the pressure detection chip judges that the touch is mistaken and interrupts the instruction, namely, the trigger instruction is determined not to be output. Thus, the logical operation amount of the pressure detection chip 30 can be reduced, and the logical judgment efficiency can be improved. Of course, in another example, the pressure detection chip 30 may also perform the comparison determination of the first pressure parameter and the first preset value M and the comparison determination of the second pressure parameter and the second preset value N at the same time.
In an example, the pressure detection chip 30 calculates the first pressure parameter and the second pressure parameter according to a preset algorithm to obtain a calculated value, and compares the calculated value with the target preset value X to determine whether to output the trigger instruction, for example, the absolute value of the first pressure parameter and the absolute value of the second pressure parameter may be divided to obtain a ratio therebetween, and the ratio is compared with a third preset value X1; alternatively, the absolute value of the first pressure parameter and the absolute value of the second pressure parameter may be subtracted to obtain a difference therebetween, and the difference is compared with a fourth preset value X2; of course, an adaptive combination of the above two approaches may also be used.
It is understood that the settings of the first preset value M, the second preset value N, and the target preset value X may be specifically set according to actual design needs, historical experience, or through multiple experiments. Illustratively, the first preset value M is equal to the second preset value N, and the values are both 400; the target preset value X is a third preset value X1, which takes the value 2.
In the embodiment of the present invention, the first detection unit 10 and the second detection unit 20 respectively sense the acting force in the first direction and the acting force in the second direction, and then the pressure detection chip 30 determines the first pressure parameter in the first direction and the second pressure parameter in the second direction according to the sensing parameter of the first detection unit 10 and the sensing parameter of the second detection unit 20, and determines whether to output the trigger instruction according to the first pressure parameter and the second pressure parameter, so that pressure detection in two directions, that is, two-dimensional pressure detection can be implemented, and further, whether to output the trigger instruction is determined, thereby avoiding a false trigger condition and improving user experience.
Optionally, in some embodiments of the present invention, the pressure detection circuit may include: at least two pressure sensing assemblies arranged on a supporting sheet 40, wherein each pressure sensing assembly is provided with a first power supply end, a second power supply end, a first detection end and a second detection end, and the first detection end and the second detection end are respectively connected with the pressure detection chip 30; each pressure sensing assembly forms a first detection unit 10, and at least two pressure sensing assemblies cooperate to form at least one second detection unit 20; here, a pressure sensing assembly constitutes a first detecting unit 10, and the sensing parameters of the first detecting unit 10 include: a first sensing parameter Vpx of a first detection end and a second sensing parameter Vnx of a second detection end in the same pressure sensing assembly; every two pressure sensing assemblies cooperate to form a second detecting unit 20, and the sensing parameter of the second detecting unit 20 may include sensing parameters of different detecting ends of the two pressure sensing assemblies, that is, the sensing parameter of the second detecting unit 20 may include a first sensing parameter Vpx of a first detecting end of one pressure sensing assembly and a second sensing parameter Vnx of a second detecting end of the other pressure sensing assembly.
The pressure detection chip 30 determines a first pressure parameter in a first direction and a second pressure parameter in a second direction according to a first sensing parameter Vpx at a first detection end and a second sensing parameter Vnx at a second detection end of the at least two pressure sensing components, and determines whether to output a trigger instruction according to the first pressure parameter and the second pressure parameter.
Specifically, the pressure detection chip may determine a first pressure parameter in a first direction according to a first sensing parameter Vpx of a first detection end and a second sensing parameter Vnx of a second detection end in the pressure sensing assembly; and determining a second pressure parameter according to the sensing parameters of different detection ends of the two pressure sensing assemblies, for example, the pressure detection chip may determine the second pressure parameter according to a first sensing parameter Vpx of a first detection end of one of the two pressure sensing assemblies and a second sensing parameter Vnx of a second detection end of the other of the two pressure sensing assemblies.
Referring to fig. 2, in some alternative embodiments, the support sheet 40 may include opposing first and second surfaces; the pressure sensing assembly may comprise a first strain element 51, a second strain element 52, a third strain element 53 and a fourth strain element 54, the first strain element 51 and the fourth strain element 54 being arranged at a first surface and the second strain element 52 and the third strain element 53 being arranged at a second surface. Referring to fig. 3, a first end of the first strain element 51 is connected to a first end of the second strain element 52 and to a first power source end; the second end of the second strain element 52 is connected to the first end of the fourth strain element 54 and to the first detection terminal; a second end of the fourth strain element 54 is connected to a second end of the third strain element 53 and to a second power supply terminal; the first end of the third strain element 53 is connected to the second end of the first strain element 51 and to the second sensing terminal. Here, in each pressure sensing assembly, the first strain element 51, the second strain element 52, the third strain element 53 and the fourth strain element 54 are connected to form a wheatstone bridge. The resistance values of the first strain element 51, the second strain element 52, the third strain element 53 and the fourth strain element 54 change along with the change of the deformation amount, and the resistance value changes in positive correlation with the deformation amount, that is, if the deformation amount is small, the resistance value is small, and if the deformation amount is large, the resistance value is large, that is, if the strain elements such as the first strain element 51, the second strain element 52, the third strain element 53 and the fourth strain element 54 receive external acting force, the resistance value is small if the strain elements are compressed, and the resistance value is large if the strain elements are stretched; for example, the first, second, third and fourth strain elements 51, 52, 53 and 54 may be strain resistors.
Preferably, in some embodiments of the present invention, the first strain element 51 and the second strain element 52 are disposed opposite to each other, and the third strain element 53 and the fourth strain element 54 are disposed opposite to each other, so that the first strain element 51, the second strain element 52, and the third strain element 53 and the fourth strain element 54 can sense the accurate force in the first direction. The first strain element 51 and the fourth strain element 54 are arranged flush on the first surface, and the second strain element 52 and the third strain element 53 are arranged flush on the second surface, so that the first strain element 51 and the fourth strain element 54, and the second strain element 52 and the third strain element 53 can sense the accurate force in the second direction.
Further, in some embodiments of the present invention, a first slit 41 is disposed on a first surface of the supporting sheet 40, a second slit 42 is disposed on a second surface of the supporting sheet 40, and a set of the first slit 41 and the second slit 42 corresponds to one pressure sensing assembly, wherein the first strain element 51 and the fourth strain element 54 are disposed across the first slit 41, and the second strain element 52 and the third strain element 53 are disposed across the second slit 42. In this way, by providing the first slit 41 and the second slit 42 on the supporting sheet 40 corresponding to the pressure sensing assembly, the acting force applied to the pressure sensing assembly is advantageously amplified, so as to improve the pressure sensing accuracy of the pressure sensing assembly. Alternatively, the first slit 41 and the second slit 42 are correspondingly disposed, and the first slit 41 and the second slit 42 are communicated.
In the embodiment of the present invention, the supporting sheet 40 and the pressure sensing assembly are insulated from each other, that is, the first strain element 51 and the fourth strain element 54 are insulated from the first surface, and the second strain element 52 and the third strain element 53 are insulated from the second surface. Optionally, an insulating layer is disposed between the support sheet 40 and the pressure sensing assembly, i.e., a first insulating layer is disposed between the first and fourth strain elements 51 and 54 and the first surface, and a second insulating layer is disposed between the second and third strain elements 52 and 53 and the second surface.
In some optional embodiments of the present invention, the at least two pressure-sensing elements comprise a first pressure-sensing element and a second pressure-sensing element, and in the at least two pressure-sensing elements, a first power end of the first pressure-sensing element is connected to ground, a second power end of the first pressure-sensing element is connected to a power voltage VS, the second power end of the second pressure-sensing element is connected to ground, and the first power end of the second pressure-sensing element is connected to the power voltage VS. Alternatively, the pressure sensing elements may be powered by the pressure detecting chip 30, the second power terminal of the first pressure sensing element is connected to the pressure detecting chip 30, and the power voltage VS is output to the second power terminal of the first pressure sensing element through the pressure detecting chip 30; the first power terminal of the second pressure sensing device is connected to the pressure detecting chip 30, and the power voltage VS is output to the first power terminal of the second pressure sensing device through the pressure detecting chip 30.
Illustratively, as shown in fig. 5, in the embodiment of the present invention, two pressure sensing assemblies are taken as an example, wherein a first pressure sensing assembly may include strain elements R1, R2, R3 and R4, and a second pressure sensing assembly may include strain elements R5, R6, R7 and R8, where R1 and R5 are respectively the first strain element 51 in the respective pressure sensing assembly, R2 and R6 are respectively the second strain element 52 in the respective pressure sensing assembly, R3 and R7 are respectively the third strain element 53 in the respective pressure sensing assembly, and R4 and R8 are respectively the fourth strain element 54 in the respective pressure sensing assembly. As shown in fig. 6, a first terminal of R1 is connected to a first terminal of R2 and to a first power supply terminal; a second end of R2 is connected with the first end of R4 and connected with the first detection end; a second terminal of R4 is connected to the second terminal of R3 and to a second power supply terminal; the first end of R3 is connected with the second end of R1 and connected with the second detection end; a first detection end and a second detection end of the first pressure sensing assembly are respectively connected with the pressure detection chip 30, the first power end is grounded, and the second power end inputs power voltage VS; a first terminal of R5 is connected to a first terminal of R6 and to a first power supply terminal; a second end of R6 is connected with the first end of R8 and connected with the first detection end; a second terminal of R8 is connected to the second terminal of R7 and to a second power supply terminal; the first end of R7 is connected with the second end of R5 and connected with the second detection end; the first detection end and the second detection end of the second pressure sensing assembly are respectively connected with the pressure detection chip 30, the second power end is grounded, and the first power end inputs power voltage VS.
In this example, R1, R2, R3 and R4 may constitute a first detecting unit 10, R5, R6, R7 and R8 may constitute a first detecting unit 10, R2, R4, R5 and R7 may constitute a second detecting unit 20; r1, R3, R6 and R8 may constitute one second sensing unit 20; wherein, the first sensing parameter of the first detecting end in the first pressure sensing assembly is denoted as Vp1, and the second sensing parameter of the second detecting end is denoted as Vn 1; the first sensing parameter of the first sensing terminal of the second pressure sensing element is denoted as Vp2, and the second sensing parameter of the second sensing terminal is denoted as Vn 2. In the case of receiving a force (e.g., a pressing force or a torsion force) in a first direction, assuming that the first direction is a direction from the first surface to the second surface, as shown in fig. 7, the resistance values of the strain elements R1, R4, R5 and R8 arranged on the first surface of the support sheet 40 are decreased due to being compressed, and the resistance values of the strain elements R2, R3, R6 and R7 arranged on the second surface of the support sheet 40 are increased due to being stretched, so that the Vp1 and Vn2 values obtained by the pressure detecting chip 30 are increased, and the Vn1 and Vp2 values are decreased, i.e., the pressure detecting chip can determine a first pressure parameter in the first direction according to Vp1 and Vn1, which is denoted as S1, S1 being Vp1-Vn 1; alternatively, a first pressure parameter in a first direction is determined from Vp2 and Vn2, denoted as S2, S2 ═ Vn2-Vp 2; here, the numerical variations of Vp1 and Vn2 can be regarded as the same, and the numerical variations of Vn1 and Vp2 can be regarded as the same. In the case of receiving a force (e.g., a pressing force or a torsion force) in the second direction, assuming that the second direction is a direction from the fourth strain element toward the first strain element, as shown in fig. 8, R3, R4, R7, and R8 located on the same side will decrease in resistance due to being compressed, and R1, R2, R5, and R6 located on the same side will increase in resistance due to being stretched, Vp1 and Vn1 values obtained by the pressure detecting chip 30 increase, Vp2 and Vn2 values decrease, that is, the pressure detecting chip can determine a second pressure parameter from Vp1 and Vn2, which is denoted as S3, S3 is Vp 9-Vn 2, as shown in fig. 6, Vp1 is denoted as Vp3, Vn2 is denoted as Vn3, and S3 is denoted as Vp 58-Vp 3; alternatively, a second pressure parameter may be determined from Vn1 and Vp2, denoted S4, S4 ═ Vn1-Vp 2; here, the numerical variations of Vp1 and Vn1 can be regarded as the same, and the numerical variations of Vp2 and Vn2 can be regarded as the same.
Referring to fig. 4, the pressure sensing assembly further includes a switch K connected between the second end of the second strain element 52 and the second end of the first strain element 51. Under the condition that the switch K is turned off, the pressure detection chip 30 determines a first pressure parameter according to a first sensing parameter Vpx of a first detection end and a second sensing parameter Vnx of a second detection end in the pressure sensing assembly; when the switch K is closed, the first strain element 51 and the second strain element 52 are connected in parallel, the third strain element 53 and the fourth strain element 54 are connected in parallel, and the pressure detection chip detects a first sensing parameter of the first detection end of one of the two pressure sensing assemblies and a second sensing parameter of the second detection end of the other of the two pressure sensing assemblies.
Optionally, the switch K is connected to the pressure detection chip 30, and the switch K is controlled to be turned on or off by the output of the control signal Sel from the pressure detection chip 30.
Illustratively, as shown in fig. 5, in the embodiment of the present invention, two pressure sensing assemblies are taken as an example, wherein a first pressure sensing assembly may include strain elements R1, R2, R3 and R4, and a second pressure sensing assembly may include strain elements R5, R6, R7 and R8, where R1 and R5 are respectively the first strain element 51 in the respective pressure sensing assembly, R2 and R6 are respectively the second strain element 52 in the respective pressure sensing assembly, R3 and R7 are respectively the third strain element 53 in the respective pressure sensing assembly, and R4 and R8 are respectively the fourth strain element 54 in the respective pressure sensing assembly. As shown in fig. 9, a first terminal of R1 is connected to a first terminal of R2 and to a first power supply terminal; a second end of R2 is connected with the first end of R4 and connected with the first detection end; a second terminal of R4 is connected to the second terminal of R3 and to a second power supply terminal; the first end of R3 is connected with the second end of R1 and connected with the second detection end; the switch K1 is connected between the second end of R2 and the second end of R1; a first detection end and a second detection end of the first pressure sensing assembly are respectively connected with the pressure detection chip 30, the first power end is grounded, and the second power end inputs power voltage VS; a first terminal of R5 is connected to a first terminal of R6 and to a first power supply terminal; a second end of R6 is connected with the first end of R8 and connected with the first detection end; a second terminal of R8 is connected to the second terminal of R7 and to a second power supply terminal; the first end of R7 is connected with the second end of R5 and connected with the second detection end; the switch K2 is connected between the second end of R6 and the second end of R5; the first detection end and the second detection end of the second pressure sensing assembly are respectively connected with the pressure detection chip 30, the second power end is grounded, and the first power end inputs power voltage VS.
In this example, R1, R2, R3 and R4 may constitute a first detecting unit 10, R5, R6, R7 and R8 may constitute a first detecting unit 10, R1, R2, R3, R4, R5, R6, R7 and R8 may constitute a second detecting unit 20; wherein, the first sensing parameter of the first detecting end in the first pressure sensing assembly is denoted as Vp1, and the second sensing parameter of the second detecting end is denoted as Vn 1; the first sensing parameter of the first sensing terminal of the second pressure sensing element is denoted as Vp2, and the second sensing parameter of the second sensing terminal is denoted as Vn 2. In the case of receiving a force (e.g., a pressing force or a torsion force) in a first direction, assuming that the first direction is a direction from the first surface to the second surface, the resistance values of the strain elements R1, R4, R5, and R8 disposed on the first surface of the support sheet 40 decrease due to being compressed, and the resistance values of the strain elements R2, R3, R6, and R7 disposed on the second surface of the support sheet 40 increase due to being stretched, as shown in fig. 10, when the switches K1 and K2 are opened, the Vp1 and Vn2 values obtained by the pressure detecting chip 30 increase, and the Vn1 and Vp2 values decrease, that is, the pressure detecting chip 30 may determine a first pressure parameter in the first direction according to Vp1 and Vn1, and is written as S1, S1 — Vn 1; alternatively, a first pressure parameter in a first direction is determined from Vp2 and Vn2, denoted as S2, S2 ═ Vn2-Vp 2; here, the numerical variations of Vp1 and Vn2 can be regarded as the same, and the numerical variations of Vn1 and Vp2 can be regarded as the same; as shown in fig. 11, when switches K1 and K2 are closed, R1 and R2 are connected in parallel (denoted as R1// R2), R3 and R4 are connected in parallel (denoted as R3// R4), R7 and R8 are connected in parallel (denoted as R7// R8), and R5 and R6 are connected in parallel (denoted as R5// R6), where Vp1 and Vn1 in the first pressure sensing assembly (denoted as Vp3), Vp2 and Vn2 in the second pressure sensing assembly (denoted as Vn3), where the amount of change in R1// R2, the amount of change in R3/R4, the amount of change in R5/R6, and the amount of change in R7// R8 are substantially the same, and 3 and Vn3 are substantially the same. In the case of receiving a force (such as a pressing force or a torsion force) in the second direction, assuming that the second direction is a direction from the fourth strain element toward the first strain element, R3, R4, R7 and R8 located on the same side will have their resistances reduced due to being compressed, and R1, R2, R5 and R6 located on the same side will have their resistances increased due to being stretched, as shown in fig. 12, in the case where the switches K1 and K2 are opened, the values of Vp1 and Vn1 acquired by the pressure detecting chip 30 increase, the values of Vp2 and Vn2 decrease, the amounts of change of Vp1 and Vn1 are substantially the same, and the amounts of change of Vp2 and Vn2 are substantially the same; as shown in fig. 13, when the switches K1 and K2 are closed, R1 and R2 are connected in parallel (denoted as R1// R2), R3 and R4 are connected in parallel (denoted as R3// R4), R7 and R8 are connected in parallel (denoted as R7// R8), and R5 and R6 are connected in parallel (denoted as R5// R6), where Vp1 is the same as Vn1 in the first pressure sensing assembly (denoted as Vp 1), Vp1 is the same as Vp1 in the second pressure sensing assembly (denoted as Vn 1), where Vp1 is the same as Vn1, where Vp is increased in the values of R1// R1 and R1// R1, and Vp 1/R1, and the resistance of R1/R1 is decreased, the value of Vp1 acquired by the pressure detecting chip 30 is increased, and the value of Vp1 is decreased as a second pressure parameter S1, S1.
In the embodiment of the present invention, the switch may be an analog switch, and it should be understood that the switch diagrams shown in fig. 4 and fig. 9 to fig. 13 are only used as an exemplary illustration, and do not represent a limitation on an actual switch pattern.
Illustratively, in some embodiments of the present invention, the first direction is perpendicular to the first surface of the support sheet 40 and the second direction is perpendicular to the first direction.
Illustratively, in some embodiments of the present invention, the support plate 40 may be a steel plate.
Optionally, in some embodiments of the present invention, as shown in fig. 14, the pressure detection chip 30 may include: a data selector (MUX)31, an analog-to-digital converter (ADC)32, and a controller 33; the input end of the data selector 31 is connected to the first detection end and the second detection end of each pressure sensing assembly, respectively, the output end of the data selector 31 is connected to the input end of the analog-to-digital converter 32, and the output end of the analog-to-digital converter 32 is connected to the controller 33. The data selector 31 is used for switching and connecting the first detection terminal and the second detection terminal of each pressure sensing assembly, so as to obtain a first sensing parameter Vpx of the first detection terminal and a second sensing parameter Vnx of the second detection terminal. Here, the analog-to-digital converter 32 performs analog-to-digital conversion on the analog signals such as the first sensing parameter Vpx and the second sensing parameter Vnx acquired by the data selector 31, outputs the digital signals to the controller 33, and the controller 33 performs arithmetic processing, threshold comparison and judgment, and finally outputs an interrupt instruction or a trigger instruction.
Optionally, the pressure detecting chip 30 may further include: at least one operational amplifier 34 and at least one compensation module 35; at least one operational amplifier 34 is connected between the output end of the data selector 31 and the input end of the analog-to-digital converter 32, and at least one compensation module 35 is connected with the at least one operational amplifier 34 in a one-to-one correspondence manner. Here, the operational amplifier 34 is used for amplifying the signal output from the output terminal of the data selector 31, and the compensation module 35 is used for compensating the offset voltage. Illustratively, the controller may be a Micro Controller Unit (MCU), and the operational amplifier may be a Programmable Gain Amplifier (PGA).
Optionally, the pressure sensing component may be powered by the pressure detection chip 30, and at this time, to facilitate stable power supply, the pressure detection chip 30 may further include: and the voltage stabilizer 36, the voltage stabilizer 36 is respectively connected with a power module (not shown) and a power end of the pressure sensing assembly, so as to regulate the power supply voltage VCC output by the power module, and output the regulated power supply voltage VS to the power end. Preferably, the voltage Regulator 36 may be a Low Dropout Regulator (LDO). Illustratively, the number of the at least two pressure sensing assemblies is two, and the pressure regulator 36 is connected to the first power end of the first pressure sensing assembly, the second power end of the first pressure sensing assembly is grounded, the pressure regulator 36 is connected to the second power end of the second pressure sensing assembly, and the first power end of the second pressure sensing assembly is grounded.
According to the pressure detection circuit provided by the embodiment of the invention, the acting force in the first direction is sensed through the at least one first detection unit, the acting force in the second direction is sensed through the at least one second detection unit, the first pressure parameter in the first direction and the second pressure parameter in the second direction are determined by the pressure detection chip according to the sensing parameter of the first detection unit and the sensing parameter of the second detection unit, and whether the trigger instruction is output or not is determined according to the first pressure parameter and the second pressure parameter, so that the pressure detection in the two directions can be realized, the trigger instruction is further determined to be output or not, the condition of false triggering can be avoided, and the user experience is improved.
An embodiment of the present invention further provides an electronic device, which may include: a housing 90, a processor 60, and the pressure detection circuit described above; as shown in fig. 15 and 16, the pressure detection circuit and the processor 60 are provided inside the case 90, and the pressure detection chip 30 of the pressure detection circuit is connected to the processor 60. In the embodiment of the present invention, after the pressure detection chip 30 determines to output the trigger instruction, the trigger instruction is output to the processor 60, and the processor 60 executes the preset operation corresponding to the trigger instruction based on the trigger instruction.
Optionally, in some optional embodiments of the present invention, as shown in fig. 15 and 16, the electronic device may further include a battery 70 and a power management chip 80, the power management chip 80 is connected to the battery 70, the processor 60, and the pressure detection chip 30, respectively, and the battery 70 is implemented to supply power to the processor 60 and the pressure detection chip 30 through the power management chip 80.
Alternatively, in some embodiments of the present invention, as shown in fig. 17 and 18, the pressure sensing assembly of the pressure detection circuit is disposed adjacent the sidewall of the housing 90, i.e., in the dashed box position shown in fig. 18. Alternatively, the pressure sensing assembly may be attached to the inner wall of the casing 90, as shown in fig. 17, and the pressure sensing assembly is attached to the inner wall of the casing 90 by a double-sided adhesive tape 91.
Optionally, in some embodiments of the present invention, the first surface of the support sheet 40 is disposed opposite to the inner wall of the housing 90.
Some specific usage scenarios are illustrated below as examples.
In fig. 19A to 19D, the pressure sensing device may be attached to the inner wall of the casing 90, the pressure sensing device is equivalent to a key, and the position of the dashed frame in the drawings is the position of the pressure sensing device, i.e. the key region; the first surface of the support sheet 40 is disposed opposite to the inner wall of the housing 90, and the first direction is perpendicular to the first surface of the support sheet 40, and the second direction is perpendicular to the first direction. The arrows in the figure indicate the user operation direction. Here, in the pressure detecting circuit, by sensing the acting force in the first direction by two first detecting units 10 and sensing the acting force in the second direction by one second detecting unit 20, the pressure detecting chip 30 obtains first pressure parameters in the two first directions, which are respectively denoted as S1 and S2, and the pressure detecting chip 30 obtains a second pressure parameter in the one second direction, which is denoted as S3. In this example, the first preset value M is equal to the second preset value N, and the values are all 400; the target preset value X is a third preset value X1, which takes the value 2.
Fig. 20A to 20E show linear diagrams between the respective position points in the key region and the parameter values of the first pressure parameter (i.e., S1 and S2) and the second pressure parameter (i.e., S3) in the exemplary operation scenarios of this example.
In a scenario example, as shown in fig. 19A, the user vertically presses the key region, in this operation, the values of S1, S2 and S3 are as shown in fig. 20A, at this time, S1 is greater than M, S2 is greater than M, | S3| is less than N, and | S1|/| S3| is greater than X, | S2|/| S3| is greater than X, the pressure detection chip outputs a trigger instruction, and the processor executes a corresponding preset operation according to the trigger instruction. It is understood that, in each scene example, the pressure detecting chip 30 obtains the first pressure parameters S1 and S2 of the two first directions, and the first pressure parameter of the first direction can be determined to satisfy the condition as long as one of the parameters satisfies the first preset value M.
In a scenario example, as shown in fig. 19B, the user presses the screen vertically or presses the back of the housing vertically, in which operation the values of S1, S2 and S3 are as shown in fig. 20B or fig. 20C, at this time, S1> M, but | S3| > N, and | S1|/| S3| < X, the pressure detection chip will not output the trigger instruction.
In a scenario example, as shown in fig. 19C, the user twists the housing of the electronic device, in which operation the values of S1, S2, and S3 are as shown in fig. 20D, at which time S1> M, but S3> N, and | S1|/| S3| < X, the pressure detection chip will not output a trigger instruction.
In a scenario example, as shown in fig. 19D, the user bends the housing of the electronic device, in which operation the values of S1, S2, and S3 are as shown in fig. 20E, at which time S1> M, but S3> N, and | S1|/| S3| < X, the pressure detection chip will not output a trigger instruction.
In addition, in the embodiment of the invention, the electronic device can be a mobile phone or a tablet computer. It is understood that the electronic device is not limited to a mobile phone and a tablet Computer, but may be a Laptop Computer (Laptop Computer) or a Personal Digital Assistant (PDA), etc.
According to the electronic equipment with the pressure detection circuit, provided by the embodiment of the invention, the pressure detection in two directions can be realized, so that whether a trigger instruction is output or not is determined, the operation accuracy of the electronic equipment can be improved, the condition of false triggering is avoided, and the use experience of a user is improved.
Referring to fig. 21, which is a schematic flow chart illustrating a control method of a pressure detection circuit according to an embodiment of the present invention, the control method of a pressure detection circuit according to an embodiment of the present invention is applied to the pressure detection circuit, and includes the following steps:
step 2101, obtaining the sensing parameters of the first detection unit and the sensing parameters of the second detection unit;
and 2103, outputting a trigger instruction under the condition that the first pressure parameter and the second pressure parameter meet preset conditions.
In the embodiment of the present invention, when at least one first detection unit and at least one second detection unit in the pressure detection circuit sense an external acting force (for example, a pressing force or a torsion force), an induction parameter of the first detection unit and an induction parameter of the second detection unit may be respectively obtained, then, a preset operation process may be performed according to the induction parameter of the first detection unit and the induction parameter of the second detection unit, a first pressure parameter in a first direction and a second pressure parameter in a second direction are determined, and then, the first pressure parameter and the second pressure parameter are compared with a preset threshold to determine whether to output a trigger instruction.
In the embodiment of the invention, the sensing parameters corresponding to the acting forces in the first direction and the second direction are utilized to determine the first pressure parameter in the first direction and the second pressure parameter in the second direction, and whether the trigger instruction is output or not is determined according to the first pressure parameter and the second pressure parameter, so that the pressure detection in the two directions can be realized, whether the trigger instruction is output or not is further determined, the condition of false triggering can be avoided, and the user experience is improved.
Optionally, in some embodiments of the present invention, in step 2102, determining a first pressure parameter in a first direction and a second pressure parameter in a second direction according to the sensing parameter of the first detecting unit and the sensing parameter of the second detecting unit may include: according to a first sensing parameter of a first detection end and a second sensing parameter of a second detection end in at least two pressure sensing assemblies, a first pressure parameter in a first direction and a second pressure parameter in a second direction are determined. Here, the first pressure parameter in the first direction may be specifically determined according to a first sensing parameter of a first detection end and a second sensing parameter of a second detection end in the pressure sensing assembly; for example, the pressure detection chip may determine the second pressure parameter according to a first sensing parameter of a first detection end of one of the two pressure sensing assemblies and a second sensing parameter of a second detection end of the other of the two pressure sensing assemblies.
Optionally, in some embodiments of the present invention, in step 2103, in a case where the first pressure parameter value and the second pressure parameter satisfy a preset condition, outputting the trigger instruction may include: and under the condition that the first pressure parameter is greater than the first preset value and the absolute value of the second pressure parameter is smaller than the second preset value, if the operation value calculated by the first pressure parameter and the second pressure parameter according to a preset algorithm is greater than the target preset value, outputting a trigger instruction. In the embodiment of the invention, a first pressure parameter is compared with a first preset value, a second pressure parameter is compared with a second preset value, under the condition that the first pressure parameter is greater than the first preset value and the absolute value of the second pressure parameter is smaller than the second preset value, an operation value calculated by the first pressure parameter and the second pressure parameter according to a preset algorithm is compared with a target preset value, if the operation value is greater than the target preset value, a trigger instruction is output, and if not, the error touch and interruption instruction is determined. Here, the first preset value and the second preset value are both positive values. It is understood that the first preset value, the second preset value and the target preset value may be specifically set according to actual design needs, historical experience or through multiple experiments.
In an example, the first pressure parameter may be first compared with a first preset value, and if the first pressure parameter is greater than the first preset value, the second pressure parameter may be compared with a second preset value, otherwise, it is determined that no trigger instruction is output; if the absolute value of the second pressure parameter is smaller than the second preset value, the first pressure parameter and the second pressure parameter are further compared with a target preset value according to an operation value calculated by a preset algorithm, otherwise, the pressure detection chip judges that the touch is mistaken and interrupts the instruction, namely, the trigger instruction is determined not to be output. Therefore, the logical operation amount of the pressure detection chip can be reduced, and the logical judgment efficiency is improved. Of course, in another example, the pressure detection chip may also perform the comparison determination of the first pressure parameter and the first preset value and the comparison determination of the second pressure parameter and the second preset value at the same time.
Preferably, in some optional embodiments of the present invention, if the operation value calculated by the first pressure parameter and the second pressure parameter according to the preset algorithm is greater than the target preset value, the triggering instruction is output, and the triggering instruction may include at least one of the following: if the ratio of the absolute value of the first pressure parameter to the absolute value of the second pressure parameter is greater than a third preset value, outputting a trigger instruction; and if the difference value between the absolute value of the first pressure parameter and the absolute value of the second pressure parameter is greater than the fourth preset value, outputting a trigger instruction.
According to the control method of the pressure detection circuit, provided by the embodiment of the invention, the first pressure parameter in the first direction and the second pressure parameter in the second direction are determined by using the induction parameters corresponding to the acting forces in the first direction and the second direction, and whether the trigger instruction is output or not is determined according to the first pressure parameter and the second pressure parameter, so that the pressure detection in the two directions can be realized, and further, whether the trigger instruction is output or not is determined, the condition of false triggering can be avoided, and the user experience is improved.
It should be appreciated that reference throughout this specification to "one embodiment," "an embodiment," or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment or example of the present invention. Thus, the appearances of the phrases "in one embodiment," "in one embodiment," or "in some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, elements, structures, or features illustrated in one drawing or one embodiment of the invention may be combined in any suitable manner with elements, structures, or features illustrated in one or more other drawings or embodiments.
It should be noted that, in one or more embodiments herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the present invention may repeat reference numerals and/or letters in the various examples or embodiments. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
Moreover, in the embodiments of the present invention, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (13)
1. A pressure detection circuit, comprising:
the first detection unit is used for sensing acting force in a first direction;
at least one second detection unit for sensing an acting force in a second direction; the first detection unit and the second detection unit have different induction parameters corresponding to different acting forces; the first direction and the second direction form a preset angle;
the pressure detection chip is respectively connected with the first detection unit and the second detection unit, determines a first pressure parameter in a first direction and a second pressure parameter in a second direction according to the sensing parameter of the first detection unit and the sensing parameter of the second detection unit, and determines whether to output a trigger instruction according to the first pressure parameter and the second pressure parameter;
the pressure detection circuit includes: the pressure sensing assembly is provided with a first power supply end, a second power supply end, a first detection end and a second detection end, and the first detection end and the second detection end are respectively connected with the pressure detection chip; each pressure sensing assembly forms one first detection unit, and the at least two pressure sensing assemblies are matched to form at least one second detection unit;
the pressure detection chip determines a first pressure parameter in a first direction and a second pressure parameter in a second direction according to a first sensing parameter of a first detection end and a second sensing parameter of a second detection end in the at least two pressure sensing assemblies, and determines whether to output a trigger instruction according to the first pressure parameter and the second pressure parameter;
the support sheet comprises opposing first and second surfaces;
the pressure sensing assembly comprises a first strain element, a second strain element, a third strain element and a fourth strain element, the first strain element and the fourth strain element are arranged on the first surface, and the second strain element and the third strain element are arranged on the second surface;
the first end of the first strain element is connected with the first end of the second strain element and is connected with a first power supply end; the second end of the second strain element is connected with the first end of the fourth strain element and is connected with the first detection end; a second end of the fourth strain element is connected with a second end of the third strain element and is connected with a second power supply end; the first end of the third strain element is connected with the second end of the first strain element and is connected with the second detection end.
2. The pressure detection circuit of claim 1, wherein the pressure sensing assembly further comprises a switch connected between the second end of the second strain element and the second end of the first strain element;
under the condition that the switch is disconnected, the pressure detection chip determines a first pressure parameter according to a first induction parameter of a first detection end and a second induction parameter of a second detection end in the pressure sensing assembly;
under the condition that the switch is closed, the pressure detection chip determines the second pressure parameter according to a first sensing parameter of a first detection end of one of the two pressure sensing assemblies and a second sensing parameter of a second detection end of the other of the two pressure sensing assemblies.
3. The pressure detection circuit according to claim 1, wherein the pressure detection chip includes: the device comprises a data selector, an analog-to-digital converter and a controller;
the input end of the data selector is respectively connected with the first detection end and the second detection end of each pressure sensing assembly, the output end of the data selector is connected with the input end of the analog-to-digital converter, and the output end of the analog-to-digital converter is connected with the controller.
4. The pressure detection circuit according to claim 1 or 2, wherein the first strain element is disposed opposite to the second strain element, and the third strain element is disposed opposite to the fourth strain element.
5. The pressure detection circuit according to claim 1 or 2, wherein the first strain element and the fourth strain element are disposed flush on the first surface, and the second strain element and the third strain element are disposed flush on the second surface.
6. The pressure detection circuit of claim 5, wherein a first slot is disposed on the first surface of the support sheet, a second slot is disposed on the second surface of the support sheet, and a set of the first slot and the second slot corresponds to one of the pressure sensing assemblies, wherein the first strain element and the fourth strain element are disposed across the first slot, and the second strain element and the third strain element are disposed across the second slot.
7. The pressure detection circuit of claim 6, wherein the first slit and the second slit are disposed in correspondence, and the first slit and the second slit are in communication.
8. The pressure detection circuit of claim 1, wherein the first power terminal of a first pressure sensing assembly of the at least two pressure sensing assemblies is coupled to ground, the second power terminal of a first pressure sensing assembly is coupled to a power supply voltage, the second power terminal of a second pressure sensing assembly is coupled to ground, and the first power terminal of a second pressure sensing assembly is coupled to a power supply voltage.
9. An electronic device, comprising: a housing, a processor, and the pressure detection circuit of any of claims 1-8;
the pressure detection circuit and the processor are arranged in the shell, and a pressure detection chip of the pressure detection circuit is connected with the processor.
10. The electronic device of claim 9, wherein the pressure sensing component of the pressure detection circuit is disposed adjacent to the sidewall of the housing.
11. A control method of a pressure detection circuit applied to the pressure detection circuit according to any one of claims 1 to 8, characterized by comprising:
acquiring induction parameters of a first detection unit and induction parameters of a second detection unit;
determining a first pressure parameter in a first direction and a second pressure parameter in a second direction according to the induction parameters of the first detection unit and the second detection unit;
and outputting a trigger instruction under the condition that the first pressure parameter and the second pressure parameter meet a preset condition.
12. The control method according to claim 11, wherein the outputting a trigger instruction in a case where the first pressure parameter and the second pressure parameter satisfy a preset condition includes:
and under the condition that the first pressure parameter is larger than a first preset value and the absolute value of the second pressure parameter is smaller than a second preset value, if the operation value calculated by the first pressure parameter and the second pressure parameter according to a preset algorithm is larger than a target preset value, outputting a trigger instruction.
13. The control method according to claim 12, wherein if the calculated value of the first pressure parameter and the second pressure parameter calculated according to the preset algorithm is greater than the target preset value, a trigger command is output, and the trigger command includes at least one of the following:
if the ratio of the absolute value of the first pressure parameter to the absolute value of the second pressure parameter is greater than a third preset value, outputting a trigger instruction;
and if the difference value between the absolute value of the first pressure parameter and the absolute value of the second pressure parameter is greater than a fourth preset value, outputting a trigger instruction.
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| CN201910775820.0A CN110597411B (en) | 2019-08-21 | 2019-08-21 | Pressure detection circuit, electronic device, and control method for pressure detection circuit |
| PCT/CN2020/107398 WO2021031866A1 (en) | 2019-08-21 | 2020-08-06 | Pressure measurement circuit, electronic device and method for controlling pressure measurement circuit |
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| CN110597411B (en) * | 2019-08-21 | 2021-10-29 | 维沃移动通信有限公司 | Pressure detection circuit, electronic device, and control method for pressure detection circuit |
| CN111629098B (en) * | 2020-05-25 | 2021-05-25 | 芯海科技（深圳）股份有限公司 | Shell, terminal, pressure detection method, equipment and storage medium |
| CN112247741B (en) * | 2020-09-25 | 2022-04-08 | 深圳市裕展精密科技有限公司 | Calibration system, calibration method and calibration device |
| CN113473339B (en) * | 2021-05-12 | 2023-03-28 | 钰太芯微电子科技（上海）有限公司 | Micro-electromechanical microphone integrated with pressure sensor and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108459796A (en) * | 2018-01-23 | 2018-08-28 | 维沃移动通信有限公司 | A kind of response method and mobile terminal of function key |
| CN109471548A (en) * | 2017-09-07 | 2019-03-15 | 希迪普公司 | Side has the mobile terminal device of touch pressure detecting part |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103019427B (en) * | 2011-09-28 | 2017-06-27 | 联想(北京)有限公司 | Control method and electronic equipment |
| CN105320354B (en) * | 2015-08-26 | 2018-11-23 | 宸鸿科技(厦门)有限公司 | A kind of three-dimensional touch device |
| CN105224129B (en) * | 2015-09-01 | 2018-06-22 | 宸鸿科技(厦门)有限公司 | A kind of pressure-sensing input unit |
| CN105653168B (en) * | 2015-12-28 | 2021-12-24 | 联想(北京)有限公司 | Electronic device and control method thereof |
| CN206378838U (en) * | 2016-09-14 | 2017-08-04 | 宸鸿科技(厦门)有限公司 | Pressure-sensing module, pressure touch sensing system |
| CN108540119B (en) * | 2017-03-01 | 2021-12-24 | 深圳纽迪瑞科技开发有限公司 | Pressure sensing button device and pressure sensing button measuring circuit |
| US10353506B2 (en) * | 2017-06-16 | 2019-07-16 | Apple Inc. | Dual resistive strain and pressure sensor for force touch |
| CN107092119B (en) * | 2017-06-30 | 2019-12-17 | 上海天马微电子有限公司 | display substrate and display panel |
| KR20190003085A (en) * | 2017-06-30 | 2019-01-09 | 삼성전자주식회사 | Electronic device for providing service and operating mehtod thereof |
| CN109714475A (en) * | 2018-12-18 | 2019-05-03 | 芯海科技（深圳）股份有限公司 | A kind of piezoresistive transducer realizes the device and method of new function using new fitting |
| CN110597411B (en) * | 2019-08-21 | 2021-10-29 | 维沃移动通信有限公司 | Pressure detection circuit, electronic device, and control method for pressure detection circuit |
| CN111147061A (en) * | 2020-01-19 | 2020-05-12 | 芯海科技（深圳）股份有限公司 | Pressure sensor module, pressure detection device and method |
| CN111122029A (en) * | 2020-01-19 | 2020-05-08 | 芯海科技（深圳）股份有限公司 | Pressure sensor module, pressure detection device and method |
| CN111176387A (en) * | 2020-02-28 | 2020-05-19 | 芯海科技（深圳）股份有限公司 | Mobile terminal shell, mobile terminal, pressure touch method and storage medium |
-
2019
- 2019-08-21 CN CN201910775820.0A patent/CN110597411B/en active Active
-
2020
- 2020-08-06 WO PCT/CN2020/107398 patent/WO2021031866A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109471548A (en) * | 2017-09-07 | 2019-03-15 | 希迪普公司 | Side has the mobile terminal device of touch pressure detecting part |
| CN108459796A (en) * | 2018-01-23 | 2018-08-28 | 维沃移动通信有限公司 | A kind of response method and mobile terminal of function key |
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| CN110597411A (en) | 2019-12-20 |
| WO2021031866A1 (en) | 2021-02-25 |
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