Electronic device, vehicle and control method of electronic device

Abstract

The invention discloses an electronic device, a vehicle and a control method of the electronic device, and relates to the technical field of electronic devices. The electronic device comprises a first piezoelectric component, a second piezoelectric component and a first controller. The first piezoelectric assembly and the second piezoelectric assembly are electrically connected with the first controller. The first piezoelectric assembly and the second piezoelectric assembly are installed on a target piece of target equipment, and the first piezoelectric assembly and the second piezoelectric assembly are different in structure or attribute; the first piezoelectric component and the second piezoelectric component generate passive vibration under the vibration effect of the corresponding target piece, the first piezoelectric component is configured to generate a first electric signal in response to the passive vibration, and the second piezoelectric component is configured to generate a second electric signal in response to the passive vibration; the first controller is configured to generate a control instruction in response to at least one of the first electrical signal and the second electrical signal.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and in particular to an electronic device, a vehicle, and a method for controlling the electronic device. Background Technology

[0002] Surface sensing technology is a cutting-edge field that allows for the timely acquisition of information from the external environment. For example, piezoelectric ceramic oscillators can be used as sensors to achieve surface sensing. Summary of the Invention

[0003] One embodiment of this application provides an electronic device, which includes a first controller and a first piezoelectric component and a second piezoelectric component, both electrically connected to the first controller. This can improve the sensitivity and uniformity of vibration sensing for target components with large areas, and can also increase the number of target components that can detect vibration, thereby improving the comprehensiveness of vibration detection of target equipment.

[0004] Another embodiment of this application provides an electronic device in which the first piezoelectric component and the second piezoelectric component have different structures or properties, such that the first piezoelectric component can be used to both sense the vibration of a target component and excite the target component to generate vibration. Thus, the first piezoelectric component can be used to achieve dual functions, and the second piezoelectric component can be used to improve the uniformity of vibration sensing of the target component, while also helping to reduce costs.

[0005] Another embodiment of this application provides an electronic device in which a set of sensing components is disposed on a first target component and an independent piezoelectric component is disposed on a second target component. This can reduce interference between the sensing components and the independent piezoelectric component, improve the accuracy of vibration sensing of the target component, and enable control of the working state of the first piezoelectric component in the sensing components by using the independent piezoelectric component.

[0006] Another embodiment of this application provides an electronic device in which a second piezoelectric component in a sensing component and a second piezoelectric component that is an independent piezoelectric component are both electrically connected to a first controller through the same second interface. This allows for an increase in the number of connected piezoelectric components without increasing the number of I / O interfaces of the controller, thereby improving the sensitivity, uniformity, and comprehensiveness of vibration detection of the first target component and facilitating the simplification of wiring harness layout.

[0007] Another embodiment of this application provides an electronic device in which a first piezoelectric component and a first controller are electrically connected through a switching circuit. The switching circuit can be used to switch the connection state between the first piezoelectric component and the first controller, thereby enabling the first piezoelectric component to be in different working states, that is, enabling the first piezoelectric component to be in different working states that can detect vibration or generate vibration.

[0008] Another embodiment of this application provides an electronic device in which a first piezoelectric component is electrically connected to a switching circuit via a signal processing circuit. During the transmission of a third electrical signal to the first piezoelectric component via the switching circuit, the third electrical signal can be processed in various ways by the signal processing circuit, which is beneficial to improving the sound quality of the sound generated by the vibration of the target component driven by the first piezoelectric component or enhancing the auditory experience.

[0009] Another embodiment of this application provides an electronic device in which a first piezoelectric component and / or a second piezoelectric component are electrically connected to a first controller via an operational amplifier circuit. The operational amplifier circuit can process the first electrical signal and / or the second electrical signal to ensure that the magnitudes of the first electrical signal and the second electrical signal are both within a suitable range, thereby reducing the possibility of the first controller being damaged or the possibility that the first electrical signal and / or the second electrical signal are too weak to be recognized by the first controller.

[0010] Another embodiment of this application provides an electronic device and a vehicle, wherein by providing an electronic device on at least one of the vehicle body panel, interior parts and vehicle components, the vibration of the vehicle body panel, interior parts and the like can be generated by using a first piezoelectric component, and the vibration of some components in the vehicle can also be detected by using the first piezoelectric component and a second piezoelectric component, such as detecting the knocking vibration of the vehicle body panel, so that human-vehicle interaction can be realized based on the inner and outer surfaces of the vehicle without changing the shape of the vehicle or the shape of the components.

[0011] Another embodiment of this application provides a vehicle in which a first piezoelectric component and a second piezoelectric component are installed in different areas of the vehicle. The first piezoelectric component can be used to drive the vehicle body to vibrate and generate sound, while the second piezoelectric component can be used to increase the sensing area and sensing uniformity of the vehicle body, while also helping to reduce costs.

[0012] Another embodiment of this application provides a vehicle in which a first piezoelectric component and a second piezoelectric component installed on the door are respectively disposed on both sides of a door reinforcement, thereby improving the sensitivity and uniformity of vibration sensing at the door.

[0013] Another embodiment of this application provides a control method for an electronic device, wherein a first controller controls the first piezoelectric component to switch its operating state in response to receiving a second electrical signal generated by a second piezoelectric component, thereby enabling control of the operating state of the first piezoelectric component based on the second piezoelectric component.

[0014] To achieve one or more of the above objectives, the electronic device provided in the first aspect of this application includes: a first piezoelectric component, a second piezoelectric component, and a first controller. Both the first and second piezoelectric components are electrically connected to the first controller; the first and second piezoelectric components are mounted on a target component of a target device, and are connected to the target component in different ways; the first and second piezoelectric components generate passive vibrations under the vibration of their respective target components; the first piezoelectric component is configured to generate a first electrical signal in response to the passive vibration, and the second piezoelectric component is configured to generate a second electrical signal in response to the passive vibration; the first controller is configured to generate a control command in response to at least one of the first and second electrical signals.

[0015] In the technical solution of this application embodiment, since the electronic device includes a first piezoelectric component and a second piezoelectric component, the first and second piezoelectric components can be disposed on the target component of the target device. The first and second piezoelectric components can be connected to the target component in different connection methods, thereby detecting the vibration generated by the target component through the first and second piezoelectric components. The first and second piezoelectric components can be simultaneously disposed on target components with a large area, and the second piezoelectric component can be disposed on some other target components. This not only improves the sensitivity and accuracy of vibration detection on target components with a large area, but also increases the number of target components that can detect vibration, thereby enhancing the comprehensiveness of vibration detection of the target device.

[0016] A second aspect of the embodiments of this application is that the vehicle provided in the embodiments of this application includes: a vehicle body, a vehicle controller, and electronic devices provided in any of the above embodiments. The vehicle body includes multiple body panels and multiple interior trim pieces; the vehicle controller is mounted on the vehicle body and is used to control the operation of the vehicle; a first piezoelectric component and a second piezoelectric component are respectively disposed on the body panels and / or interior trim pieces, and the first controller is electrically connected to the vehicle controller.

[0017] A third aspect of the embodiments of this application is that the control method of the electronic device provided in the embodiments of this application is applied to the electronic device provided in the first aspect above. The control method of the electronic device includes: a first controller controlling a first piezoelectric component to be in a working state until the first controller receives a second electrical signal generated by a second piezoelectric component; the first controller responding to the second electrical signal to control the first piezoelectric component to switch working states. Attached Figure Description

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0019] Figure 1 Schematic diagram of the composition structure of the electronic device provided in the embodiments of this application Figure 1 ;

[0020] Figure 2 Schematic diagram of the composition structure of the electronic device provided in the embodiments of this application Figure 2 ;

[0021] Figure 3 A schematic diagram of the switching circuit in the electronic device provided in the embodiments of this application. Figure 1 ;

[0022] Figure 4 A schematic diagram of the switching circuit in the electronic device provided in the embodiments of this application. Figure 2 ;

[0023] Figure 5 A schematic diagram of the switching circuit in the electronic device provided in the embodiments of this application. Figure 3 ;

[0024] Figure 6 This is a schematic diagram of the structure of the first piezoelectric component in the electronic device provided in the embodiments of this application;

[0025] Figure 7 This is a schematic diagram of the structure of the second piezoelectric component in the electronic device provided in the embodiments of this application;

[0026] Figure 8 A schematic diagram of the installation of electronic devices on a target device according to an embodiment of this application;

[0027] Figure 9 This is a schematic diagram of the installation of electronic devices on target components in a target device, provided in an embodiment of this application.

[0028] Figure 10 Flowchart of the control method for electronic devices provided in the embodiments of this application Figure 1 ;

[0029] Figure 11 Flowchart of the control method for electronic devices provided in the embodiments of this application Figure 2 .

[0030] Explanation of reference numerals in the attached figures:

[0031] 1-First piezoelectric assembly; 11-First piezoelectric element; 12-First substrate; 13-Connection area; 2-Second piezoelectric assembly; 21-Independent piezoelectric assembly; 22-Second piezoelectric element; 23-Second substrate; 3-First controller; 31-First interface; 32-Second interface; 4-Switching circuit; 41-First switch; 42-Zenith diode; 43-Second switch; 44-Signal processing circuit; 5-Operational amplifier circuit; 6-Power amplifier circuit; 7-Body; 71-Door; 72-Reinforcing member; 81-First target member; 82-Second target member; 9-Second controller. Detailed Implementation

[0032] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms “comprising” and “having”, and any variations thereof, in the specification and the foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0034] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0035] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0036] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0037] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0038] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0039] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0040] Surface sensing technology enables devices and apparatuses to acquire signals, which can then be used to control these devices or facilitate human-machine interaction. For example, surface sensing can be achieved by detecting passive vibrations generated by certain components within a device. However, detecting passive vibrations requires assessing the nature of these vibrations. In related technologies, the limited number of controller interfaces restricts the ability to implement surface sensing devices only for certain components of a vehicle, thus limiting the scope for comprehensive and uniform surface sensing.

[0041] For ease of explanation and description, the following uses a vehicle as an example to illustrate the electronic devices provided in the embodiments of this application.

[0042] A key technical challenge is figuring out how to integrate vibration detection devices throughout the entire vehicle body using minimal wiring harnesses and interfaces, thus enabling vibration sensing capabilities across the entire vehicle. This is because vehicle body control modules (such as body control domain controllers) typically have limited input / output (I / O) interfaces, while the more vibration detection devices integrated into the vehicle, the more I / O interfaces are required. Domain controllers, as integrated controllers, manage and control multiple ECUs (Electronic Control Units) in the automotive electronic system, achieving comprehensive control and optimization of the entire vehicle system. The more I / O interfaces each ECU has, the more complex the wiring becomes, and the higher the cost.

[0043] For example, installing vibration detection devices on 12 separate panels or locations on the exterior of the vehicle typically requires 12 I / O interfaces, meaning an additional 24 wires are needed on the body control module. If an acceleration vibration sensor is used, even more wires are required because it needs to output a Serial Peripheral interface (SPI). Each SPI interface typically requires four wires, and the SPI signal transmission length is limited, making it unsuitable for vibration sensing across the entire vehicle body.

[0044] For example, piezoelectric devices can be used to detect vibrations throughout a vehicle body. Piezoelectric devices are components made of piezoelectric materials and exhibit both the piezoelectric effect and the inverse piezoelectric effect. The piezoelectric effect refers to the generation of an electrical signal when a piezoelectric device undergoes mechanical deformation under external force; the inverse piezoelectric effect refers to the mechanical deformation that a piezoelectric device can produce under the drive of an electrical signal. For instance, applying an electric field with the same polarization direction to a piezoelectric device increases the polarization intensity, thus increasing the distance between the positive and negative bound charges within the piezoelectric device, resulting in extensional deformation along the polarization direction. Similarly, if the applied electric field is opposite to the polarization direction, the piezoelectric device undergoes contractional deformation along the polarization direction. Therefore, by placing piezoelectric devices on equipment and devices, they can not only detect vibrations but also, by applying electrical signals to the piezoelectric devices, drive the equipment and devices to vibrate, thereby generating sound, etc. However, setting 12 piezoelectric devices on the vehicle body requires 12 I / O interfaces, which means 24 wires. Setting 24 wires for a conventional controller module is not easy to achieve.

[0045] Therefore, there is a need for an electronic device that can sense vibrations from more panels or parts while reducing the number of interfaces required for vibration detection.

[0046] Reference Figure 1 and Figure 2 , Figure 1 This application illustrates the structural composition of the electronic device provided in an embodiment. Figure 1 , Figure 2 Schematic diagram of the composition structure of the electronic device provided in the embodiments of this application Figure 2 The electronic device provided in this application includes: a first piezoelectric component 1, a second piezoelectric component 2, and a first controller 3. Both the first piezoelectric component 1 and the second piezoelectric component 2 are electrically connected to the first controller 3. The first piezoelectric component 1 and the second piezoelectric component 2 are mounted on a target component of the target device, and the first piezoelectric component 1 and the second piezoelectric component 2 have different structures or properties. The first piezoelectric component 1 and the second piezoelectric component 2 generate passive vibrations under the vibration of their respective target components. The first piezoelectric component 1 is configured to generate a first electrical signal in response to the passive vibration, and the second piezoelectric component 2 is configured to generate a second electrical signal in response to the passive vibration. The first controller 3 is configured to generate a control command in response to at least one of the first and second electrical signals.

[0047] In this embodiment of the application, the first piezoelectric component 1 includes a first piezoelectric element 11 made of piezoelectric material. The first piezoelectric component 1 can be configured as a structure that can both generate vibration autonomously and detect vibration.

[0048] For example, the first piezoelectric component 1 is electrically connected to the first controller 3. An electrical signal is applied to the first piezoelectric component 1 under the control of the first controller 3. Under the action of the electrical signal, the first piezoelectric component 1 can generate mechanical vibration matching the applied electrical signal. For instance, the first piezoelectric component 1 can be placed on a target part of a target device. By applying an electrical signal to the first piezoelectric component 1, the first piezoelectric component 1 can cause the target part to vibrate, thereby making the target part emit sound. Alternatively, when the target part is subjected to collisions, knocks, or other impacts that produce different vibration modes, the target part can cause the first piezoelectric component 1 to undergo mechanical deformation. That is, the first piezoelectric component 1 generates passive vibration under the vibration of the target part, and the first piezoelectric component 1 can generate a first electrical signal matching the vibration mode of the target part.

[0049] In this embodiment of the application, the second piezoelectric component 2 includes a second piezoelectric element 22 made of piezoelectric material, and the second piezoelectric component 2 can be configured as a structure capable of detecting vibration.

[0050] For example, the second piezoelectric component 2 is electrically connected to the first controller 3. The second piezoelectric component 2 can be placed on the target part of the target device. When the target part is subjected to different modes of vibration such as collision or knocking, the target part can also drive the second piezoelectric component 2 to produce mechanical deformation corresponding to the vibration. That is, the second piezoelectric component 2 generates passive vibration under the vibration of the target part, and the second piezoelectric component 2 can generate a second electrical signal that matches the vibration mode of the target part.

[0051] In this embodiment of the application, the first piezoelectric component 1 and the second piezoelectric component 2 may be piezoelectric components with different structures or different properties.

[0052] In this embodiment, the first piezoelectric component 1 needs to be able to drive the target component to vibrate, which requires the first piezoelectric component 1 to generate vibrations with a large amplitude, meaning that the piezoelectric performance of the first piezoelectric component 1 can be higher than that of the second piezoelectric component 2. In some embodiments, the properties of the piezoelectric component include the capacitance value or dielectric constant of the piezoelectric element. For example, the capacitance value or dielectric constant of the first piezoelectric element 11 is greater than that of the second piezoelectric element 22. Exemplarily, the first piezoelectric component 1 and the second piezoelectric component 2 can be manufactured using different piezoelectric materials. For example, the first piezoelectric element in the first piezoelectric component 1 can be selected from a piezoelectric material with a capacitance value greater than that of the second piezoelectric element in the second piezoelectric component 2. Alternatively, the first piezoelectric element in the first piezoelectric component 1 can be selected from a piezoelectric material with a dielectric constant greater than that of the second piezoelectric element in the second piezoelectric component 2. In this way, when the same voltage is applied to the first piezoelectric component 1, the first piezoelectric component 1 can produce a vibration with a larger amplitude, so that the first piezoelectric component 1 can drive the target to vibrate and make the target to produce a clearer and higher decibel sound.

[0053] In some embodiments, the structure of the piezoelectric component may include one or more of the following: the structure of the piezoelectric element, the area of ​​the piezoelectric element, the connection method between the piezoelectric component and the target component, and the area ratio of the electrode on the piezoelectric element. The piezoelectric element may be made of piezoelectric material, such as a piezoelectric ceramic sheet. For example, the first piezoelectric element 11 has more stacked layers than the second piezoelectric element 22. Understandably, the vibration effect of a multilayer piezoelectric ceramic sheet is better than that of a single-layer piezoelectric ceramic sheet; the multilayer structure can provide better vibration control and higher vibration efficiency. For another example, the area of ​​the first piezoelectric element 11 is larger than the area of ​​the second piezoelectric element 22. Thus, using the second piezoelectric component 2 can achieve good vibration sensing while reducing costs.

[0054] For example, the first piezoelectric component 1 and the second piezoelectric component 2 can be disposed on the target component with different connection methods. In some embodiments, the connection relationships between the first piezoelectric component 1 and the second piezoelectric component 2 and the target component are different. For example, a portion of the first piezoelectric component 1 can be connected to the target component to create a gap between the first piezoelectric component 1 and the target component, so that the vibration of the first piezoelectric component 1 can better drive the target component to vibrate. One side surface of the second piezoelectric component 2 can be connected to the target component to allow the second piezoelectric component 2 to better generate mechanical deformation with the vibration of the target component, thereby improving the accuracy of vibration detection by the second piezoelectric component 2. Alternatively, the connection area between the first piezoelectric component 1 and the target component is located on both sides or edges of the first substrate in the first piezoelectric component 1; the connection area between the second piezoelectric component 2 and the target component covers the center of the second substrate in the second piezoelectric component 2 or a portion close to the center of the second substrate. In some embodiments, the corresponding connection method can be selected according to the different structures or properties of the first piezoelectric component 1 and the second piezoelectric component 2.

[0055] In this embodiment, the first controller 3 is a unit with computational functions. The first controller 3 can interpret computer instructions and process data in computer software. For example, the first controller 3 may include a microcontroller unit (MCU), which can be electrically connected to various parts of the second controller 9 through input / output circuits, control circuits, etc. The second controller 9 may include an electronic control unit (ECU). The first controller 3 may be included within the second controller 9. Different parts of the electronic device can be controlled by the MCU to perform their respective actions to achieve different functions.

[0056] For example, the first electrical signal generated by the first piezoelectric component 1 can be transmitted to the first controller 3, and the second electrical signal generated by the second piezoelectric component 2 can also be transmitted to the first controller 3. The first controller 3 is configured to generate corresponding control commands based on the received first and / or second electrical signals. Furthermore, the first controller 3 can be electrically connected to the controller of the target device, so that the target device can be controlled to perform corresponding actions according to the control commands generated by the first controller 3.

[0057] The electronic device provided in this application includes a first piezoelectric component 1 and a second piezoelectric component 2 with different structures or properties. The first piezoelectric component 1 and the second piezoelectric component 2 can be disposed on a target component of the target device, and can be connected to the target component in different ways. This allows for the detection of vibrations generated by the target component through the first piezoelectric component 1 and the second piezoelectric component 2. The first piezoelectric component 1 and the second piezoelectric component 2 can be simultaneously disposed on a target component with a large area, and the second piezoelectric component 2 can be disposed on some other target components. This not only improves the sensitivity and uniformity of vibration sensing for target components with a large area, but also increases the number of target components that can detect vibrations, thereby enhancing the comprehensiveness of vibration detection of the target device.

[0058] In some possible embodiments of this application, such as Figure 2 As shown, at least one first piezoelectric component 1 and at least one second piezoelectric component 2 form a set of sensing components. Each set of sensing components is used to be disposed on a first target component 81, and an independent piezoelectric component 21 is used to be disposed on a second target component 82. The independent piezoelectric component 21 is at least one of the multiple second piezoelectric components 2 that does not form a sensing component. The first target component 81 and the second target component 82 are different target components in the target device.

[0059] In this embodiment of the application, a first piezoelectric component 1 and a second piezoelectric component 2 can be used as a set of sensing components to improve the sensitivity and uniformity of the electronic device's vibration sensing of the target component through the same set of sensing components.

[0060] For example, such as Figure 2 As shown, when the target device includes multiple target components, a first piezoelectric component 1 and a second piezoelectric component 2 can be simultaneously provided on a first target component 81 among the multiple target components. For example, a first piezoelectric component 1 and a second piezoelectric component 2 can be provided in different areas on the same first target component 81. The first piezoelectric component 1 and the second piezoelectric component 2 provided on the same first target component 81 are considered as a set of sensing components. In this way, for the first target component 81, the vibration of the first target component 81 can be detected by at least two piezoelectric components.

[0061] In another example, a separate piezoelectric component 21 may be provided for the second target component 82 among a plurality of target components. This separate piezoelectric component 21 is at least one of the plurality of second piezoelectric components 2 that does not form a sensing component. For example, such as Figure 2 As shown, when the target device includes four first target components 81 and one second target component 82, a first piezoelectric component 1 and a second piezoelectric component 2 can be provided for each first target component 81, while only the second piezoelectric component 2 can be provided for the second target component 82.

[0062] In the above embodiments, since at least one first piezoelectric component 1 and at least one second piezoelectric component 2 are used as a set of sensing components, and the set of sensing components is disposed on a first target component 81, the first piezoelectric component 1 can not only make the first target component 81 vibrate (such as produce sound), but also the sensitivity and accuracy of vibration detection of the first target component 81 can be improved by using the set of sensing components.

[0063] In some possible embodiments of this application, such as Figure 2 As shown, each first piezoelectric component 1 is electrically connected to the first controller 3 through an independent first interface 31, and multiple second piezoelectric components 2 are electrically connected to the first controller 3 through the same second interface 32.

[0064] In this embodiment, the first piezoelectric component 1 can be electrically connected to a first interface 31 on the first controller 3, while multiple second piezoelectric components 2 can be electrically connected to the same second interface 32 on the first controller 3. Both the first interface 31 and the second interface 32 are I / O interfaces on the first controller 3.

[0065] For example, each first piezoelectric component 1 on a plurality of first target components 81 can be electrically connected to a first interface 31, while all second piezoelectric components 2 on the plurality of first target components 81 can be electrically connected to the same second interface 32. Alternatively, the first piezoelectric components 1 on the first target component 81 can be electrically connected to the first interface 31, while the second piezoelectric components 2 on the first target component 81 and the independent piezoelectric components 21 on the second target component 82 can be electrically connected to the same second interface 32. Or, several independent piezoelectric components 21 on a plurality of second target components 82 can be electrically connected to the same second interface 32. For example, as shown... Figure 2As shown, four first piezoelectric components 1 can be electrically connected to four first interfaces 31 on the first controller 3 via wires. Five second piezoelectric components 2 can be electrically connected to the same second interface 32 on the first controller 3 via wires. Thus, if one of the second piezoelectric components 2 generates an electrical signal due to the vibration of the target component, and if one of the four first piezoelectric components 1 also generates an electrical signal due to the vibration of the target component, then the vibrating target component can be identified as the first target component 81 that causes that first piezoelectric component 1 to generate an electrical signal. Conversely, if one of the second piezoelectric components 2 generates an electrical signal due to the vibration of the target component, and none of the four first piezoelectric components 1 generate an electrical signal, then the vibrating target component can be identified as the second target component 82 that causes that second piezoelectric component 2 to generate an electrical signal. Alternatively, if some first piezoelectric components 1 vibrate in response to a third electrical signal, causing the target component to emit sound, the first controller 3 can be configured not to respond to the second electrical signal generated by the second piezoelectric component 2 located on the target component that is in a sound-emitting state.

[0066] In the above embodiments, since the second piezoelectric component 2 in the sensing component and the second piezoelectric component 21 as an independent piezoelectric component 2 are both electrically connected to the first controller 3 through the same second interface 32, the number of I / O interfaces required when electrically connecting the second piezoelectric component 2 to the first controller 3 can be reduced, which is beneficial to simplifying the structure of electronic devices.

[0067] In some possible embodiments of this application, the first controller is configured to determine the target component that generates vibration among a plurality of target components based on a first electrical signal received from each first interface and / or based on a second electrical signal received from each second interface.

[0068] In the embodiments of this application, such as Figure 2 As shown, when at least one first piezoelectric component 1 is provided for each of the multiple first target components 81, each first piezoelectric component 1 is electrically connected to the first controller 3 through an independent first interface 31. Thus, when any first target component 81 is struck, collided, or vibrates, it will cause the corresponding first piezoelectric component 1 to vibrate, generating a first electrical signal. This first electrical signal is transmitted to the first controller 3 through the independent first interface 31, thus determining which of the multiple first target components 81 is vibrating. In other words, a definite association is established between each first interface 31 of the first controller 3 and the corresponding first target component 81.

[0069] In the embodiments of this application, such as Figure 2As shown, when at least one first piezoelectric component 1 and at least one second piezoelectric component 2 are respectively provided for multiple first target components 81, and only the second piezoelectric component 2 is provided for the second target component 82, each first piezoelectric component 1 is electrically connected to the first controller 3 through an independent first interface 31, and multiple second piezoelectric components 2 are electrically connected to the first controller 3 through the same second interface. For example, multiple second piezoelectric components 2 are electrically connected to the same interface on the ECU, and then the interface of the ECU connecting the multiple second piezoelectric components 2 is electrically connected to a second interface on the first controller 3. In this way, when the second target component 82 is struck, collided, or vibrates, the second target component 82 will drive the corresponding second piezoelectric component 2 to vibrate, causing the second piezoelectric component 2 provided on the vibrating second target component 81 to generate a second electrical signal. The second electrical signal generated by the second piezoelectric component 2 is transmitted to the first controller 3 through the second interface 32. At this point, the first controller 3 cannot determine which first target component 81 or second target component 82 is causing the vibration. The first controller 3 needs to determine the specific target component causing the vibration by considering whether the first interface 31 receives the first electrical signal. For example, if one of the second piezoelectric components 2 generates a second electrical signal due to the vibration of the second target component 82, and if none of the other first piezoelectric components 1 generate a first electrical signal, then the target component causing the vibration is determined to be the second target component 82 that caused that one second piezoelectric component 2 to generate the second electrical signal. In this way, it can be determined which of the multiple first target components 81 and second target components 82 is causing the vibration.

[0070] In the above embodiments, since the first controller 3 is configured to determine which of the multiple target components has vibrated based on the received first electrical signal and / or second electrical signal, the specific location where the target device is hit or collided can be determined, thereby facilitating the user to implement corresponding measures based on the specific location where the target device is hit or collided.

[0071] In some possible embodiments of this application, reference is made to Figure 3 , Figure 4 and Figure 5 , Figure 3 , Figure 4 and Figure 5Schematic diagrams of different switching circuits in the electronic device provided in the embodiments of this application are shown respectively. The electronic device also includes a switching circuit 4, through which the first piezoelectric component 1 and the first controller 3 are electrically connected; the first controller 3 is configured to issue a switching command to the switching circuit 4, and the switching circuit 4 responds to the switching command to put the first piezoelectric component 1 and the first controller 3 into a first connected state or a second connected state; wherein, in the first connected state, the first controller 3 is able to generate a control command in response to a first electrical signal; in the second connected state, the first controller 3 is configured to cause the switching circuit 4 to generate a third electrical signal to be sent to the first piezoelectric component 1, and the first piezoelectric component 1 vibrates in response to the third electrical signal to drive the target component to vibrate.

[0072] In this embodiment, the first piezoelectric component 1 can be configured to both generate mechanical deformation and produce a first electrical signal when deformed by external force. A corresponding switching circuit 4 can then be incorporated into the electronic device, allowing the first piezoelectric component 1 to operate in different states by controlling the switching circuit 4.

[0073] For example, the first piezoelectric component 1 can be electrically connected to the switching circuit 4, and the switching circuit 4 can be electrically connected to the first controller 3, thereby electrically connecting the first piezoelectric component 1 and the first controller 3 through the switching circuit 4. Furthermore, the first controller 3 can be configured to issue a switching command to the switching circuit 4, and the switching circuit 4 can be configured to perform a switching action corresponding to the switching command after receiving it, so that the switching circuit 4 is in different states, thereby placing the first piezoelectric component 1 and the first controller 3 in different connected states.

[0074] For example, when it is necessary to enable the first piezoelectric component 1 to detect vibration, the first controller 3 can send a first switching command to the switching circuit 4 to put the first piezoelectric component 1 and the first controller 3 into a first connected state. At this time, when the target part is subjected to vibration due to collision, knocking, etc., causing mechanical deformation of the first piezoelectric component 1, the first piezoelectric component 1 generates a first electrical signal corresponding to the vibration of the target part. After receiving the first electrical signal, the first controller 3 can generate a control command corresponding to the first electrical signal.

[0075] For example, when it is necessary for the first piezoelectric component 1 to be in a state capable of generating mechanical deformation and causing the target component to vibrate, the first controller 3 can issue a second switching command to the switching circuit 4 to put the first piezoelectric component 1 and the first controller 3 into a second connected state. At this time, the first controller 3 can issue a control command to the switching circuit 4. The switching circuit 4 generates a third electrical signal in response to the received control command and sends the third electrical signal to the first piezoelectric component 1. After receiving the third electrical signal, the first piezoelectric component 1 can generate a vibration corresponding to the third electrical signal and can cause the target component to vibrate together.

[0076] In the above embodiments, since the first piezoelectric component 1 and the first controller 3 are electrically connected through the switching circuit 4, the switching circuit 4 can be used to switch the connection state between the first piezoelectric component 1 and the first controller 3, so that the first piezoelectric component 1 can be in different working states, that is, the first piezoelectric component 1 can be in different working states that can detect vibration or generate vibration.

[0077] In some possible embodiments of this application, the switching circuit 4 includes a connecting branch and a disconnecting branch. The two ends of the connecting branch are electrically connected to the first piezoelectric component 1 and the first controller 3, respectively. The two ends of the disconnecting branch are also electrically connected to the first piezoelectric component 1 and the first controller 3, respectively. A first electrical signal is transmitted to the first controller 3 through the connecting branch. The switching command may include a disconnecting command and a connecting command. The first controller 3 is configured to, upon receiving the first electrical signal, issue a disconnecting command to the connecting branch, and the connecting branch, in response to the disconnecting command, disconnects the electrical connection between the first controller 3 and the first piezoelectric component 1; and / or issue a connecting command to the disconnecting branch, and the disconnecting branch, in response to the connecting command, electrically connects the first controller 3 and the first piezoelectric component 1.

[0078] In this embodiment, a connecting branch and a disconnecting branch can be provided in the switching circuit 4 to allow the first piezoelectric component 1 and the first controller 3 to be in a first connected state or a second connected state, respectively. The first piezoelectric component 1 and the first controller 3 can be electrically connected through the connecting branch and the first piezoelectric component 1 and the first controller 3 can be electrically connected through the disconnecting branch.

[0079] For example, such as Figure 3 As shown, a first switch 41 can be set in the switching circuit 4 to electrically connect the first piezoelectric component 1 and the first controller 3, and the first switch 41 can be kept in a normally closed state to form a connected branch. The first controller 3 and the first piezoelectric component 1 can be electrically connected to each other through the power amplifier circuit 6 to form a disconnected branch.

[0080] Thus, when the first piezoelectric component 1 generates a first electrical signal due to the vibration of the target component, the first electrical signal can be transmitted to the first controller 3 via the first switch 41. After receiving the first electrical signal, the first controller 3 can compare it with a preset electrical signal. For example, if it determines that the first electrical signal is a music playback signal, the first controller 3 can issue a cut-off command to the first switch 41. The first switch 41, in response to the cut-off command, switches from a normally closed state to an open state (e.g., via...). Figure 3 The circuit shown by the dashed line controls the first switch 41 to open, thereby cutting off the transmission path of the first electrical signal between the first piezoelectric component 1 and the first controller 3. At this time, the first piezoelectric component 1 can receive the third electrical signal transmitted through the power amplifier circuit 6, that is, the first piezoelectric component 1 receives the electrical signal of the corresponding audio file and generates vibrations corresponding to the electrical signal of the audio file, thereby driving the target component to vibrate, so as to realize the sound of the target component (playing the audio file). The third electrical signal can be generated by the signal processing circuit 44 in response to the instruction of the first controller 3 to acquire the audio signal or acquire the audio file, and convert the audio file into the corresponding audio signal (third electrical signal). The signal processing circuit 44 transmits the generated third electrical signal to the power amplifier circuit 6.

[0081] Another example, such as Figure 4 As shown, a Zener diode 42 can be installed in the switching circuit 4 to electrically connect the first piezoelectric component 1 and the first controller 3, with the Zener diode 42 conducting from the first piezoelectric component 1 to the first controller 3, thus forming a continuous branch. For example, the Zener diode 42 can be a diode with a voltage upper limit of 3.3V. The first piezoelectric component 1 and the first controller 3 can then be electrically connected through a first switch 41, with the first switch 41 in a normally open state, thus forming a disconnected branch.

[0082] Thus, when the first piezoelectric component 1 generates a first electrical signal due to the vibration of the target component, the first electrical signal can be transmitted to the first controller 3 through the Zener diode 42. If the first controller 3 determines that the first electrical signal is a music playback signal, it can issue a connection command to the first switch 41. The first switch 41, in response to the connection command, switches from a normally open state to a closed state (e.g., via...). Figure 4The circuit shown by the dashed line controls the first switch 41 to close. At this time, the first piezoelectric component 1 can receive the electrical signal of the audio file transmitted through the power amplifier circuit 6 and generate vibrations corresponding to the electrical signal of the audio file, thereby driving the target component to vibrate and achieve sound production. Since the first piezoelectric component 1 and the first controller 3 are electrically connected through a Zener diode 42, the Zener diode 42 is in the off state when the third electrical signal is applied to the first piezoelectric component 1. That is, the voltage of the third electrical signal is limited within a safe range by the Zener diode 42 to protect the first controller 3.

[0083] Another example, such as Figure 5 As shown, a second switch 43 can be provided in the switching circuit 4 to electrically connect the first piezoelectric component 1 and the first controller 3, forming a connecting branch and a disconnecting branch. The second switch 43 can be a single-pole double-throw analog switch. The active contact of the single-pole double-throw analog switch can be kept connected to the first of two fixed contacts, thus maintaining the first piezoelectric component 1 and the first controller 3 in a first connected state.

[0084] Thus, after the first controller 3 receives the first electrical signal through the second switch 43, if it determines that the first electrical signal is a signal for playing music, the first controller 3 can issue a cut-off command and a connection command to the second switch 43 (e.g., via...). Figure 5 The circuit shown by the dashed line controls the state of the second switch 43. In response to a cut-off command, the second switch 43 disconnects the connection between the active contact and the first fixed contact. In response to a connect command, the second switch 43 connects the active contact to the second fixed contact, thereby achieving the disconnection of the connecting branch and the connection of the disconnecting branch between the first piezoelectric component 1 and the first controller 3. At this time, the first piezoelectric component 1 can receive the electrical signal of the audio file transmitted through the power amplifier circuit 6 and generate vibrations corresponding to the electrical signal of the audio file, thereby driving the target component to vibrate and achieve sound emission from the target component.

[0085] In the above embodiments, since the switching circuit 4 includes a connecting branch and a disconnecting branch, when the first controller 3 receives the first electrical signal through the connecting branch, it can control the connecting branch to be cut off and the disconnecting branch to be connected, thereby enabling the first piezoelectric component 1 to switch from the state of detecting vibration to the state of driving the target component to vibrate.

[0086] In some possible embodiments of this application, the switching circuit in the electronic device further includes a signal processing circuit 44. The first controller 3 is electrically connected to the switching circuit 4 through the signal processing circuit 44, and the signal processing circuit 44 can be used to process the third electrical signal.

[0087] In the embodiments of this application, such as Figure 1, Figure 3 , Figure 4 and Figure 5 As shown, a signal processing circuit 44 can be provided between the first piezoelectric component 1 and the first controller 3 to process the third electrical signal transmitted to the first piezoelectric component 1 through the switching circuit 4.

[0088] For example, a signal processing circuit 44 can be provided between the disconnecting branch in the switching circuit 4 and the first controller 3. One end of the signal processing circuit 44 is electrically connected to the first controller 3, and the other end of the signal processing circuit 44 is electrically connected to the end of the disconnecting branch closest to the first piezoelectric component 1. For example, the signal processing circuit 44 can be a digital signal processing (DSP) circuit. Then, the signal processing circuit 44 can perform various processing on the third electrical signal, such as channel management, sound effect processing (e.g., echo, reverberation, bass enhancement), and digital signal processing (e.g., filtering, equalization, dynamic range compression), to improve the sound quality of the sound generated by the vibration of the target component driven by the first piezoelectric component 1 or enhance the auditory experience.

[0089] In the above embodiments, since the first controller 3 is electrically connected to the switching circuit 4 through the signal processing circuit 44, during the process of transmitting the third electrical signal to the first piezoelectric component 1 through the switching circuit 4, the third electrical signal can be processed in various ways by the signal processing circuit 44, which is beneficial to improve the sound quality of the sound generated by the vibration of the target component driven by the first piezoelectric component 1 or enhance the auditory experience.

[0090] In some possible embodiments of this application, the electronic device further includes an operational amplifier circuit 5, and the first piezoelectric component 1 and / or the second piezoelectric component 2 are electrically connected to the first controller 3 through the operational amplifier circuit 5. The operational amplifier circuit 5 is used to adjust the second electrical signal and / or the first electrical signal.

[0091] In the embodiments of this application, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, an operational amplifier circuit 5 can be set between the first piezoelectric component 1 and the first controller 3, or between the second piezoelectric component 2 and the first controller 3, so as to process the first signal and / or the second electrical signal through the operational amplifier circuit 5.

[0092] For example, the first piezoelectric component 1 and the second piezoelectric component 2 can be electrically connected to the first controller 3 through different operational amplifier circuits 5. For instance, the operational amplifier circuit 5 can be an operational amplifier (Op-Amp). The appropriate Op-Amp can be selected according to the maximum voltage that the first controller 3 can withstand, so as to amplify or reduce the first electrical signal transmitted from the first piezoelectric component 1 to the first controller 3, or to amplify or reduce the second electrical signal transmitted from the second piezoelectric component 2 to the first controller 3.

[0093] In the above embodiments, since the first piezoelectric component 1 and / or the second piezoelectric component 2 are electrically connected to the first controller 3 through the operational amplifier circuit 5, the first electrical signal and / or the second electrical signal can be processed by the operational amplifier circuit 5 so that the magnitudes of the first electrical signal and the second electrical signal are both within a suitable range. This can reduce the possibility of the first controller 3 being damaged, and also reduce the possibility that the first electrical signal and / or the second electrical signal are too weak to be recognized by the first controller 3.

[0094] In some possible embodiments of this application, reference is made to Figure 6 and Figure 7 , Figure 6 This is a schematic diagram of the structure of the first piezoelectric component in the electronic device provided in the embodiments of this application. Figure 7 This is a schematic diagram of the structure of the second piezoelectric component in the electronic device provided in the embodiments of this application. When the first piezoelectric component 1 and the second piezoelectric component 2 are disposed on the target component, a portion of the first piezoelectric component 1 is attached to the target component, and the second piezoelectric component 2 is attached to the target component.

[0095] In this embodiment of the application, when the first piezoelectric component 1 and the second piezoelectric component 2 are disposed on the target component, the first piezoelectric component 1 and the second piezoelectric component 2 can be connected to the target component in different ways according to their different structures.

[0096] For example, such as Figure 6 As shown, the first piezoelectric assembly 1 includes a first piezoelectric element 11 and a first substrate 12. The first piezoelectric element 11 is attached to the first substrate 12. For example, the first piezoelectric element 11 can be bonded to the first substrate 12 and positioned in the middle region of the first substrate 12. Figure 7 As shown, the second piezoelectric assembly 2 includes a second piezoelectric element 22 and a second substrate 23. The second piezoelectric assembly 2 includes a second substrate 23 and a second piezoelectric element 22. The second piezoelectric element 22 is attached to the second substrate 23. For example, the second piezoelectric element 22 can be bonded to the second substrate 23 and placed in the middle region of the second substrate 23.

[0097] Another example is that the first piezoelectric component 1 and the second piezoelectric component 2 can be configured with different structures in the following ways: For example, the number of stacked layers of the first piezoelectric element 11 on the first substrate 12 is greater than the number of stacked layers of the second piezoelectric element 22 on the second substrate 23. Or, the area of ​​the first piezoelectric element 11 is larger than the area of ​​the second piezoelectric element 22. Alternatively, the connection method between the first piezoelectric component and the target component is different from the connection method between the second piezoelectric component and the target component.

[0098] In some embodiments, first piezoelectric elements 11 can be respectively provided on opposite sides of the first substrate 12, so that the first piezoelectric assembly 1 includes at least two first piezoelectric elements 11. A second piezoelectric element 22 is provided on one surface of the second substrate 23.

[0099] In other embodiments, when the first piezoelectric component 1 and the second piezoelectric component 2 are respectively disposed on the target component in different connection methods, a portion of the first substrate 12 can be attached to the target component, with a gap between the first piezoelectric component 11 and the target component, and the orthographic projection area of ​​the first piezoelectric component 11 on the first substrate and the connection area 13 between the first substrate 12 and the target component do not coincide. Alternatively, the second substrate 23 can abut against the target component, and the orthographic projection area of ​​the second piezoelectric component 22 on the second substrate coincides with the connection area 13 between the second substrate 23 and the target component. The orthographic projection area is the projection area formed by the piezoelectric component on the substrate along the vibration direction of the piezoelectric component.

[0100] For example, such as Figure 6 As shown, the first piezoelectric element 11 can be configured as a rectangular sheet, or as a circle, ellipse, or other symmetrical shape. The first substrate 12 can be configured as a rectangular sheet with both its length and width greater than those of the first piezoelectric element 11, or it can be similar in shape to but larger than the first piezoelectric element 11. The first piezoelectric element 11 can be fixed to the surface of the first substrate 12 by means of bonding or other methods.

[0101] For example, the first piezoelectric element 11 can be positioned on the first substrate 12 near its center, allowing the edge of the first substrate 12 to have a connecting portion not covered by the first piezoelectric element 11. The connecting portion on the first substrate 12 (which can be a region on the same side of the first piezoelectric element 11 or a region on the opposite side of the first piezoelectric element 11) can be fixedly connected to the target component. For instance, by attaching two regions on the first substrate 12 to the target component, two connecting regions 13 can be formed between the target component and the first substrate 12. In this way, the orthographic projection area of ​​the first piezoelectric element 11 on the first substrate and the connecting region 13 between the first substrate 12 and the target component will not overlap.

[0102] For example, both areas of the first substrate 12 not covered by the first piezoelectric element 11 can be bonded and fixed to the target part, such as by using structural adhesive to bond the first substrate 12 and the target part. A gap can be created between the first substrate 12 and the target part by controlling the thickness of the structural adhesive.

[0103] Another example, such as Figure 7 As shown, the second piezoelectric element 22 can be configured as a circular sheet structure, or it can be configured as an ellipse, rhombus, square, or other symmetrical shape. The second substrate 23 can be configured as a circular sheet structure with a diameter larger than that of the circular second piezoelectric element 22, or it can be similar in shape to but larger than that of the second piezoelectric element 22. The second piezoelectric element 22 can be fixed to the surface of the second substrate 23 by means of bonding or other methods.

[0104] For example, the surface of the second substrate 23 away from the second piezoelectric element 22 can be fixedly connected to the target part. This can be achieved by adhesive bonding, whereby the second substrate 23 abuts against the target part. In this way, when a voltage is applied to the second piezoelectric element 2, the vibration generated by the second piezoelectric element 2 can be reduced, and vibration can be more easily transmitted during vibration detection, thus improving the sensitivity of vibration sensing.

[0105] Thus, since the first piezoelectric component 1 includes a first substrate 12 and a first piezoelectric element 11, the first substrate 12 can support the first piezoelectric element 11, which is beneficial to improving the strength of the first piezoelectric element 11; and there is a gap between the first piezoelectric element 11 and the target part, which facilitates the vibration of the first piezoelectric element 11. At the same time, the second piezoelectric component 2 includes a second substrate 23 and a second piezoelectric element 22, the second substrate 23 can support the second piezoelectric element 22, which is beneficial to improving the strength of the second piezoelectric element 22; and the second piezoelectric element 22 abuts against the target part through the second substrate 23, which allows the second piezoelectric element 22 to vibrate synchronously with the vibration of the target part, which is beneficial to improving the sensitivity of the second piezoelectric component 2 in detecting the vibration of the target part.

[0106] In other embodiments, the connection area between the first piezoelectric component 1 and the target component can be located at both ends or edges of the first piezoelectric component 1, while the connection area between the second piezoelectric component 2 and the target component can be located at the center of the second piezoelectric component 2 or near the center of the second piezoelectric component 2. For example, when the first piezoelectric component 1 is approximately cuboid in shape, along the length of the first piezoelectric component 1, two portions of the first base 12 can be connected to the target component at both ends respectively; or, along the circumference of the first base 12, the edge of the first base 12 can be connected to the target component, such as by adhesive bonding to attach and fix a portion of the first base 12 to the target component. In the second piezoelectric component 2, the connection area between the second base 23 and the target component can cover the center of the second base 23 or near the center of the second base 23.

[0107] In other embodiments, the connection area between the first piezoelectric component 1 and the target component can be a segmented, spaced-apart area, while the connection area between the second piezoelectric component 2 and the target component can be a continuous area. For example, the connection area 13 between the first substrate 12 and the target component can be a plurality of rectangular areas, and the connection area between the second substrate 23 and the target component can be a continuous annular area.

[0108] In some possible embodiments of this application, reference is made to Figure 8 , Figure 8 This is a schematic diagram illustrating the installation of electronic devices on a target device according to embodiments of this application. In some implementations, the target device may be a vehicle, a smart terminal (such as a personal computer (PC), laptop, mobile phone, all-in-one computer, PDA, tablet computer, or portable device), an IoT device (Internet of Things), or other device capable of carrying computer programs; this application does not limit this. Taking a vehicle as an example, the target component includes at least one of the following: a body panel, interior trim, and vehicle components connected to the body panel and / or interior trim.

[0109] In this application embodiment, the electronic devices provided in this application embodiment can be installed on a vehicle. The term "vehicle" or other similar terms used in this application embodiment include motor vehicles in a broad sense: for example, passenger / freight vehicles including SUVs, sedans, buses, off-road vehicles, tractors, trucks, special vehicles, buses, trucks, and various commercial vehicles; water transport vehicles including various boats and ships, and aircraft; and including hybrid vehicles, electric vehicles, hybrid electric vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuels derived from resources other than petroleum). This application embodiment does not limit the type and structure of the vehicle.

[0110] For example, a vehicle typically includes a frame, body 7, powertrain, and electrical system. The body 7 and powertrain are both mounted on the frame, while the electrical system is mounted on both the body 7 and the frame. The body 7 typically includes multiple body panels, multiple interior trim pieces, and multiple vehicle components. These body panels can be assembled to form the overall structure of the body 7, such as creating a passenger compartment or cargo compartment. Interior trim pieces are installed within the passenger compartment and cargo compartment to enhance vehicle comfort and provide interfaces and equipment. Vehicle components are located within the passenger compartment and cargo compartment and include seats, steering wheel, instrument panel, central control screen, armrest, license plate, etc.

[0111] In another example, the target component of the vehicle can be at least one of the body panels, interior trim, and vehicle components. That is, the first piezoelectric component 1 and the second piezoelectric component 2 of the electronic device can be disposed on the body panels, interior trim, and vehicle components.

[0112] In the above embodiments, since the target component includes a vehicle body panel, interior trim, and vehicle components, by setting electronic devices on at least one of the vehicle body panel, interior trim, and vehicle components, the vibration of the vehicle body panel, interior trim, etc., can be generated by the first piezoelectric component 1. The vibration of some components in the vehicle can also be detected by the first piezoelectric component 1 and the second piezoelectric component 2, such as detecting the knocking vibration of the vehicle body panel, thereby realizing human-vehicle interaction.

[0113] In addition, this application also provides a vehicle, which includes: a body 7, a vehicle controller, and electronic devices provided in any of the above embodiments. The body 7 includes multiple body panels and multiple interior trim pieces; the vehicle controller is mounted on the body 7 and is used to control the operation of the vehicle; a first piezoelectric component 1 and a second piezoelectric component 2 are respectively disposed on the body panels and / or interior trim pieces; and a first controller 3 is electrically connected to the vehicle controller.

[0114] In this embodiment, the vehicle body 7 can be a part of the vehicle used for carrying people and goods. The vehicle body 7 includes windows, doors 71, driver's cabin, passenger cabin, engine compartment, and luggage compartment, etc.

[0115] For example, the door 71, driver's cabin, passenger cabin, engine compartment and luggage compartment are usually formed by processing multiple body panels such as steel plates and engineering plastics and multiple interior parts such as flat or curved plastic parts.

[0116] In this embodiment, the vehicle controller is an electronic control unit used to control the electrical systems of the vehicle body 7. The vehicle body 7 controller can control power windows, power mirrors, air conditioning, headlights, turn signals, anti-theft locking system, central locking, defrosting device, braking system, and power system, etc. In other words, the vehicle body 7 controller can control certain components in the vehicle to perform corresponding actions to achieve vehicle movement control.

[0117] In this embodiment, the first piezoelectric component 1 and the second piezoelectric component 2 in the electronic device can be disposed on the vehicle body panel and interior trim. For example, the first piezoelectric component 1 and the second piezoelectric component 2 can be disposed on the panel of the door 71, or the second piezoelectric component 2 can be disposed on the dashboard. Furthermore, the first controller 3 can be electrically connected to the vehicle controller via wires or Bluetooth, enabling the transmission of electrical signals between the first controller 3 and the vehicle controller. Thus, when the first piezoelectric component 1 and the second piezoelectric component 2 detect vibration caused by a tap on the vehicle body panel, the first controller 3 can send a control command to the vehicle controller. The vehicle controller, in response to the control command, can control the corresponding device in the vehicle to perform a corresponding action. For example, it can control the vehicle to open the trunk.

[0118] The vehicle provided in this application embodiment, due to the presence of a first piezoelectric component 1 and a second piezoelectric component 2 on the vehicle body panel and / or interior trim, and the electrical connection of a first controller 3 to the vehicle controller, can not only cause the vehicle to produce sound by vibrating the vehicle body panel through the first piezoelectric component 1, but also detect the vibrations generated by the vehicle body panel through the first piezoelectric component 1 and the second piezoelectric component 2. This vibration can then be used as an input signal to send control commands to the vehicle controller via the first controller 3, thereby enabling the vehicle to perform actions corresponding to the control commands, thus achieving human-vehicle interaction. Furthermore, the first piezoelectric component 1 and the second piezoelectric component 2 can be placed on the same vehicle body panel, interior trim, or other components, which is beneficial for improving the sensitivity and accuracy of vibration detection on larger areas such as vehicle body panels and interior trim.

[0119] In some possible embodiments of this application, the vehicle body panel includes at least one of the following: a door 71, a window, a hood, a trunk lid, a roof, a front bumper, a rear bumper, and a fender; a first piezoelectric assembly 1 is installed on at least one of the following: the door 71, the hood, the trunk lid, the front bumper, and the rear bumper; and a second piezoelectric assembly 2 is installed on at least one of the following: the door 71, the hood, the trunk lid, the front bumper, the rear bumper, the roof, the fender, the window, and interior trim.

[0120] In this embodiment of the application, the vehicle body 7 includes multiple body panels and multiple interior trim pieces. A first piezoelectric component 1 and a second piezoelectric component 2 can be provided on some of the multiple body panels, and a second piezoelectric component 2 can be provided on some of the interior trim pieces.

[0121] For example, a first piezoelectric component 1 can be installed on the inner side of a body panel that is relatively flat and prone to vibration, such as the door 71, hood, trunk lid, front bumper, and rear bumper, and located on the outer surface of the body 7, so that the body panel can be vibrated to produce sound.

[0122] Another example is that a second piezoelectric component 2 may be installed on components that are at least partially exposed outside the vehicle body 7, such as the door 71, hood, trunk lid, front bumper, rear bumper, roof, fenders, and windows, as well as interior components located in the cabin and cargo compartment.

[0123] In another example, while installing the first piezoelectric component 1 on large body panels such as the door 71, hood, trunk lid, front bumper, and rear bumper, a second piezoelectric component 2 can also be installed on these large body panels. The first piezoelectric component 1 and the second piezoelectric component 2 located on the same body panel can be spaced at a predetermined distance. This increases the vibration sensing area of ​​the large body panels (the vibration intensity is weaker in areas farther from the impact point on the body panel, or the vibration of body panels with reinforcements is easily weakened by the reinforcements and difficult to sense), thus improving the uniformity of vibration sensing. Alternatively, the second piezoelectric component 2 can be installed only on body panels unsuitable for vibration to increase the area for vibration sensing. For example, fenders on a car body are usually curved, making them less prone to vibration and sound production.

[0124] In the above embodiments, since the first piezoelectric component 1 is provided on the components at least partially exposed outside the vehicle body 7, the components at least partially exposed outside the vehicle body 7 can be driven to vibrate and produce sound by the first piezoelectric component 1. Furthermore, the second piezoelectric component 2 is provided on the components at least partially exposed outside the vehicle body 7 and on interior parts and other components. The cooperation of the sensing components formed by the first piezoelectric component 1 and the second piezoelectric component 2 helps to improve the sensitivity and uniformity of vibration detection of some components on the vehicle body 7, and can increase the number of vehicle body panels such as interior parts that can detect vibration.

[0125] In some possible embodiments of this application, reference is made to Figure 9 , Figure 9 This is a schematic diagram of the installation of electronic devices on target components in a target device according to an embodiment of this application. The door 71 has a reinforcing member 72, which divides the door 71 into at least two sub-regions; a first piezoelectric component 1 and a second piezoelectric component 2 are installed on the same door 71, and the first piezoelectric component 1 and the second piezoelectric component 2 are located in different sub-regions.

[0126] In this embodiment of the application, when installing electronic devices on the car door 71, since the panel area of ​​the car door 71 is relatively large, the first piezoelectric component 1 and the second piezoelectric component 2 can be simultaneously installed on the car door 71.

[0127] For example, such as Figure 9As shown, a reinforcing member 72 is typically provided on the door 71. For example, the reinforcing member 72 is a long rod-shaped structure, which is fixedly connected to the steel plate on the door 71 to enhance the strength of the large-area steel plate on the door 71. In this case, this reinforcing member 72 divides the door 71 into two sub-regions, which are located on both sides of the reinforcing member 72. A first piezoelectric component 1 can be installed in one sub-region, and a second piezoelectric component 2 can be installed in the other sub-region.

[0128] In the above embodiment, since the reinforcing member 72 on the door 71 divides the door 71 into at least two sub-regions, and the first piezoelectric component 1 and the second piezoelectric component 2 are respectively provided in each sub-region, although the reinforcing member 72 is not conducive to the transmission of vibrations in different sub-regions on the door 71, the vibrations generated in each sub-region can be detected by the first piezoelectric component 1 and the second piezoelectric component 2 respectively, which is beneficial to improving the sensitivity of vibration detection of the door 71.

[0129] This application also provides a control method for an electronic device, which is applied to the electronic device provided in any of the above embodiments. (Refer to...) Figure 10 , Figure 10 Flowchart of the control method for electronic devices provided in the embodiments of this application Figure 1 ,like Figure 10 As shown, the control method of the electronic device includes the following steps S101 to S102.

[0130] S101, The first controller controls the first piezoelectric component to be in working state until the first controller receives the second electrical signal generated by the second piezoelectric component.

[0131] In this embodiment, after the first piezoelectric component is placed on the target component, applying a third electrical signal to the first piezoelectric component can cause it to vibrate. When the first piezoelectric component vibrates, it can drive the target component to vibrate, thereby causing the target component to emit sound. The first piezoelectric component can also generate passive vibration (mechanical deformation) when the target component vibrates, thereby generating a first electrical signal.

[0132] In this embodiment of the application, after the second piezoelectric component is disposed on the target component, the second piezoelectric component can generate passive vibration when the target component vibrates, thereby generating a second electrical signal.

[0133] For example, the first piezoelectric component can be controlled by the first controller to continuously operate in a state of detecting or generating vibration. That is, the first piezoelectric component is in a state of receiving a third electrical signal to drive the target component to vibrate, or the first piezoelectric component is in a state of detecting the vibration of the target component and generating a first electrical signal.

[0134] In another example, when the first piezoelectric component is in either the vibration detection or vibration generation state, the target component may be subjected to impact, collision, or other forces that cause vibration. In this case, the second piezoelectric component will passively vibrate due to the vibration of the target component. The second piezoelectric component can then generate a second electrical signal corresponding to the vibration type of the target component and transmit the second electrical signal to the first controller.

[0135] S102, the first controller responds to the second electrical signal and controls the first piezoelectric component to switch its working state.

[0136] In this embodiment of the application, when the first piezoelectric component is in any working state of detecting vibration or generating vibration, the first piezoelectric component can be controlled to switch working states according to the second electrical signal generated by the second piezoelectric component.

[0137] For example, when the first piezoelectric component is in the vibration detection operating state, if the first controller receives a second electrical signal, the first controller can control the first piezoelectric component to switch to the vibration generation operating state. When the first piezoelectric component is in the vibration generation operating state, if the first controller receives a second electrical signal, the first controller can control the first piezoelectric component to switch to the vibration detection operating state.

[0138] The control method for electronic devices provided in this application allows the first piezoelectric component to switch its operating state based on a second electrical signal generated by the second piezoelectric component. This can be achieved by tapping a target component on which the first piezoelectric component and / or the second piezoelectric component are located, causing the second piezoelectric component to generate a second electrical signal, thereby controlling the first piezoelectric component to switch its operating state. This facilitates interaction between the user and the target component through tapping or similar means.

[0139] Reference Figure 11 , Figure 11 Flowchart of the control method for electronic devices provided in the embodiments of this application Figure 2 The operating states include a sound-generating state and a sensing state. In the sound-generating state, the first piezoelectric component can generate vibration to cause the target component to vibrate. In the sensing state, the first piezoelectric component can generate passive vibration based on the vibration generated by the target component to generate a first electrical signal. Figure 10 , Figure 10 Step S102 can be achieved through steps S1021 or S1022.

[0140] S1021. When the first piezoelectric component is in the sound-emitting state, control the first piezoelectric component to switch to the sensing state.

[0141] In this embodiment, when the first controller controls the first piezoelectric component to vibrate and cause the target device to vibrate and produce sound, if the user causes the target device to vibrate by tapping it, the second piezoelectric component disposed on the target device generates a second electrical signal. When the first controller compares the second electrical signal with a preset electrical signal and determines that the user wants to interact with the target device by tapping, the first controller can control the first piezoelectric component to switch from a sound-producing state to a sensing state.

[0142] For example, when the first piezoelectric component causes the target component to vibrate and play music, the user can tap the target component, such as tapping it twice consecutively. The first controller can generate a control command based on the two tapping vibrations detected by the second piezoelectric component, or call a preset control command stored in the memory to control the switching circuit in the electronic device to perform a switching action, so that the first piezoelectric component switches to sensing state, that is, controls the first piezoelectric component to stop generating vibration and enter the vibration detection state. At this time, the user can tap the target component again. When the user taps the target component again, both the first and second piezoelectric components set on the target component can detect the vibration generated by the tapping.

[0143] S1022. When the first piezoelectric component is in the sensing state, control the first piezoelectric component to switch to the sound-emitting state.

[0144] In this embodiment of the application, when the first controller controls the first piezoelectric component to be in a sensing state, when the user taps the target component, the target component generates a tapping vibration corresponding to the tapping. The tapping vibration of the target component can drive the first piezoelectric component to generate a passive vibration, and the first piezoelectric component can generate a first electrical signal that matches the user's tapping.

[0145] For example, when the first controller controls the first piezoelectric component to be in a sensing state, if a user taps a target component that is individually equipped with a second piezoelectric component three times consecutively, or if the user taps a target component that is simultaneously equipped with both the first and second piezoelectric components three times consecutively, the first controller can generate a control command based on the three tap vibrations detected by the second piezoelectric component. This command controls the switching circuit in the electronic device to perform a switching action, causing the first piezoelectric component to switch to a sound-emitting state. At this time, under the action of a third electrical signal, the first piezoelectric component can drive the target component to vibrate, causing the target component to emit sound. For example, it can output a voice reminder, such as "Please stay away from the trunk, the trunk is about to open."

[0146] In the above embodiments, since the first piezoelectric component is controlled to switch between a sound-emitting state and a sensing state according to the second electrical signal generated by the second piezoelectric component, it is convenient for the user to control the first piezoelectric component by tapping the target object, etc., and it can enable the user and the target device to interact in a variety of different ways.

[0147] In some possible embodiments of this application, the first piezoelectric component and the second piezoelectric component are respectively mounted on different target components in the target device.

[0148] In this embodiment of the application, when the first piezoelectric component is in a sound-emitting state, if the second piezoelectric component and the first piezoelectric component are located on the same target component, it may affect the vibration detection of the second piezoelectric component. Therefore, the first piezoelectric component and the second piezoelectric component can be installed on different target components in the target device.

[0149] For example, a first piezoelectric component can be installed on the vehicle door, and a second piezoelectric component can be installed on the vehicle window glass. Alternatively, a first piezoelectric component can be installed on the bumper, and a second piezoelectric component can be installed on the steering wheel.

[0150] In the above embodiments, since the first piezoelectric component and the second piezoelectric component are respectively installed on different target parts in the target device, the impact of the first piezoelectric component on the vibration detection of the target part when the target part vibrates and makes the target part make a sound can be reduced, which is beneficial to improving the accuracy of the second piezoelectric component in detecting the vibration of the target part caused by the user tapping the target part.

[0151] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and all should be covered within the scope of the specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way.

Claims

1. An electronic device, characterized in that, It includes a first piezoelectric component, a second piezoelectric component, and a first controller; Both the first piezoelectric component and the second piezoelectric component are electrically connected to the first controller; the first piezoelectric component and the second piezoelectric component are mounted on the target component of the target device, and the first piezoelectric component and the second piezoelectric component have different structures or different properties; The first piezoelectric component and the second piezoelectric component generate passive vibration under the vibration of the corresponding target component. The first piezoelectric component is configured to generate a first electrical signal in response to the passive vibration, and the second piezoelectric component is configured to generate a second electrical signal in response to the passive vibration. The first controller is configured to generate a control command in response to at least one of the first electrical signal and the second electrical signal.

2. The electronic device according to claim 1, wherein, At least one first piezoelectric component and at least one second piezoelectric component form a set of sensing components, each set of sensing components is used to be disposed on a first target component, and an independent piezoelectric component is used to be disposed on a second target component; the independent piezoelectric component is at least one of the plurality of second piezoelectric components that does not form the sensing component, and the first target component and the second target component are different target components in the target device.

3. The electronic device according to claim 2, wherein, Each of the first piezoelectric components is electrically connected to the first controller through an independent first interface, and multiple second piezoelectric components are electrically connected to the first controller through the same second interface.

4. The electronic device according to claim 3, wherein, The first controller is configured to determine, based on the first electrical signal received by each of the first interfaces and / or based on the second electrical signal received by each of the second interfaces, the target component that generates vibration among the plurality of target components.

5. The electronic device according to claim 1, wherein, It also includes a switching circuit, wherein the first piezoelectric component and the first controller are electrically connected through the switching circuit; the first controller is configured to issue a switching command to the switching circuit, and the switching circuit responds to the switching command to put the first piezoelectric component and the first controller into a first connected state or a second connected state; In the first connected state, the first controller is able to generate the control command in response to the first electrical signal; in the second connected state, the first controller is configured to cause the switching circuit to generate a third electrical signal to be sent to the first piezoelectric component, and the first piezoelectric component vibrates in response to the third electrical signal to drive the target component to vibrate.

6. The electronic device according to claim 5, wherein, The switching circuit includes a connecting branch and a disconnecting branch. The two ends of the connecting branch are electrically connected to the first piezoelectric component and the first controller, respectively. The two ends of the disconnecting branch are electrically connected to the first piezoelectric component and the first controller, respectively. The first electrical signal is transmitted to the first controller through the connecting branch. The switching command includes a disconnect command and a connect command; the first controller is configured to, upon receiving the first electrical signal, issue a disconnect command to the connect branch, wherein the connect branch, in response to the disconnect command, disconnects the electrical connection between the first controller and the first piezoelectric component; and / or issue a connect command to the disconnect branch, wherein the disconnect branch, in response to the connect command, electrically connects the first controller and the first piezoelectric component.

7. The electronic device according to claim 5, wherein, The switching circuit further includes a signal processing circuit, and the first controller is electrically connected to the switching circuit through the signal processing circuit. The signal processing circuit is used to process the third electrical signal.

8. The electronic device according to claim 1, wherein, It also includes an operational amplifier circuit, wherein the first piezoelectric component and / or the second piezoelectric component are electrically connected to the first controller through the operational amplifier circuit, and the operational amplifier circuit is used to adjust the second electrical signal and / or the first electrical signal.

9. The electronic device according to claim 1, wherein, A portion of the first piezoelectric component is bonded to the target component, and the second piezoelectric component is bonded to the target component.

10. The electronic device according to any one of claims 1 to 9, wherein, The first piezoelectric component includes a first substrate and a first piezoelectric element, the first piezoelectric element being attached to the first substrate; the second piezoelectric component includes a second substrate and a second piezoelectric element, the second piezoelectric element being attached to the second substrate; the first piezoelectric component and the second piezoelectric component have different structures, including at least one of the following: The number of stacked layers of the first piezoelectric element stacked on the first substrate is greater than the number of stacked layers of the second piezoelectric element stacked on the second substrate; The area of ​​the first piezoelectric element is larger than the area of ​​the second piezoelectric element; The connection method between the first piezoelectric component and the target component is different from the connection method between the second piezoelectric component and the target component.

11. The electronic device according to claim 10, wherein, The connection method between the first piezoelectric component and the target component is different from the connection method between the second piezoelectric component and the target component, including at least one of the following: A portion of the first substrate is attached to the target component, there is a gap between the first piezoelectric element and the target component, and the orthographic projection area of ​​the first piezoelectric element on the first substrate does not coincide with the connection area between the first substrate and the target component; The second substrate abuts against the target component, and the orthographic projection area of ​​the second piezoelectric component on the second substrate coincides with the connection area between the second substrate and the target component.

12. The electronic device according to any one of claims 1 to 9, wherein, The first piezoelectric component includes a first substrate and a first piezoelectric element, the first piezoelectric element being attached to the first substrate; the second piezoelectric component includes a second substrate and a second piezoelectric element, the second piezoelectric element being attached to the second substrate; the first piezoelectric component and the second piezoelectric component differ in properties including at least one of the following: The capacitance of the first piezoelectric element is greater than the capacitance of the second piezoelectric element; The dielectric constant of the first piezoelectric element is greater than that of the second piezoelectric element.

13. The electronic device according to any one of claims 1 to 9, wherein, The target device is a vehicle, and the target component includes at least one of the following: a body panel, an interior trim, and a vehicle component connected to the body panel and / or the interior trim.

14. A vehicle, characterized in that, include: The vehicle body includes multiple body panels, multiple interior trim pieces, and vehicle components connected to the body panels and / or the interior trim pieces; A vehicle controller, which is installed on the vehicle body and is used to control the operation of the vehicle; The electronic device according to any one of claims 1 to 13, wherein the first piezoelectric component and the second piezoelectric component are respectively disposed on the vehicle body panel and / or the interior trim and / or the vehicle component, and the first controller is electrically connected to the vehicle controller.

15. The vehicle according to claim 14, wherein, The vehicle body panels include at least one of the following: doors, windows, hood, trunk lid, roof, front bumper, rear bumper, and fenders; The first piezoelectric component is installed in at least one of the following: the vehicle door, the hood, the trunk lid, the front bumper, and the rear bumper; The second piezoelectric component is installed in at least one of the following: the door, the hood, the trunk lid, the front bumper, the rear bumper, the roof, the fender, the window, and the interior trim.

16. The vehicle according to claim 15, wherein, The door has a reinforcing member that divides the door into at least two sub-regions; the first piezoelectric component and the second piezoelectric component are installed on the same door, and the first piezoelectric component and the second piezoelectric component are located in different sub-regions.

17. A method for controlling an electronic device, applied to the electronic device according to any one of claims 1 to 13, the method comprising: The first controller controls the first piezoelectric component to be in working state until the first controller receives the second electrical signal generated by the second piezoelectric component; The first controller responds to the second electrical signal and controls the first piezoelectric component to switch the operating state.

18. The control method for the electronic device according to claim 17, wherein, The operating states include a sound-emitting state and a sensing state; in the sound-emitting state, the first piezoelectric component can generate vibration to drive the target component to vibrate. In the sensing state, the first piezoelectric component can generate passive vibration based on the vibration generated by the target component to generate a first electrical signal; The first controller, in response to the second electrical signal, controls the first piezoelectric component to switch its operating state, including: When the first piezoelectric component is in the sound-emitting state, control the first piezoelectric component to switch to the sensing state; Alternatively, when the first piezoelectric component is in the sensing state, the first piezoelectric component can be controlled to switch to the sound-emitting state.

19. The control method for the electronic device according to claim 17, wherein, The first piezoelectric component and the second piezoelectric component are respectively installed on different target components in the target device.

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