Background
Human-machine interfaces (Human Machine Interaction, HMI for short), also known as user interfaces or user interfaces, are media and dialog interfaces for transferring and exchanging information between a person and a computer, and are an important component of computer systems. Is the medium of interaction and information exchange between the system and the user, which enables the conversion between the internal form of the information and the human acceptable form. Human-computer interfaces exist in all fields participating in human-computer information exchange. Such as a smart phone touch screen, keys on a vehicle steering wheel, or a vehicle control screen, etc.
In the automobile industry, a human-computer interface is usually expressed as a vehicle interior trim part integrating decoration and functionality, and when a user needs, the user wakes up and activates through touch sensing to obtain feedback and response.
Compared with the traditional mechanical key, the intelligent surface key adopts a design without holes, and the integrated scheme can prevent dust, water and false touch while ensuring attractive appearance, and has the advantages of high key operation accuracy, real touch feeling, long service life and the like. The method can be applied to the whole vehicle with 30-50 key scenes such as central control, steering wheel, vehicle window, vehicle door, skylight, reading lamp keys and the like. The intelligent surface key design is generally composed of an integrated panel, touch keys, pressure sensing keys, atmosphere lamp backlight, tactile feedback and the like.
Since the smart surface mostly adopts touch-sensitive control, for example, the device responds, i.e. the volume increases or decreases, immediately after the finger touches the human-machine interface of the device. As such, a "false touch" condition often occurs that is inconsistent with the subjective requirements of the user. Such as the user inadvertently touching the interface and actually initiating an unwanted procedure.
In another common scenario, the device does not respond in any way to what would be expected after the user touches the interface, and it is unclear to the user which of these reasons is not touched correctly, the device is malfunctioning, or the procedure is faulty. Due to the lack of corresponding feedback, it is common for users to touch the interface at high frequencies and increase the strength of touch, or reboot the device, etc. This greatly reduces the user's experience of manipulating the human-machine interface and makes it impossible to determine why the device did not respond to any expectations.
To address the "pain points" described above, people provide feedback on the behavior of touching the interface by making a "sound". For example, by incorporating a buzzer or other generating device into the device, feedback is provided to the user that when the user touches the human-machine interface, he accordingly issues a "click" to feedback to the user that he has successfully touched the surface. However, the sound of the buzzer is harsh, usually a noise, which is not the sound intended by the user, and on the other hand, the surrounding person also hears the sound, and the user does not have the privacy of the operation.
Light feedback is another feedback mode, but the mode is limited by the requirement of user observation, and when the user cannot observe, the purpose of feedback cannot be achieved. For example, when a user drives, the user cannot observe the light, i.e. the user cannot observe the light
The vibration feedback approaches the feedback of the traditional mechanical switch, so that the user can easily understand, experience and feel are good, and privacy can be ensured. For example, CN105068680a discloses a stylus with a touch vibration function, and by enabling the stylus itself to generate touch vibration feedback, the user can obtain touch vibration experience, whether in non-contact or contact with the screen. The piezoelectric sensing device is further arranged on the outer surface of the touch pen, force applied by a user's finger to hold the touch pen can be sensed and responded, a function similar to ' pressure sensing ' can be realized in a non-contact use process, and the strength of touch vibration can be adjusted based on the magnitude of the holding force. The touch vibration of the stylus pen cannot interfere the effect of the pressure sensing function and the grip strength detection function. The application of the technology has limitation, and can not be suitable for human-computer interaction of a wider range of human-computer interfaces.
The resistance bridge is a common pressure detection technical scheme at present, namely, the resistance bridge is placed under a pressing surface, a key is pressed, the pressure resistor receives different forces, and the resistance value of the pressure resistor shows a motionless change direction. The resistance value becomes smaller if compressive force is applied, and becomes larger if tensile force is applied.
The spring plate capacitor is a common pressure detection technical scheme at present, a spring plate is placed under a pressing surface, a key is pressed, the height of the spring plate changes along with the pressing stroke, the change of the capacitor is caused by the change of the height of the spring plate, and the pressing force is calculated through the change of the capacitance value.
The eccentric motor is a technical means for vibration feedback at present, an eccentric rotor is arranged in the center of the eccentric motor, when the eccentric motor rotates, the eccentric rotor generates a centrifugal force, and the eccentric motor generates tiny displacement by the centrifugal force, so that vibration is generated, and the vibration feedback felt by people is called tactile feedback. The method is simple in driving and low in cost, and because vibration of the eccentric motor is generated by rotation, starting and stopping are needed for a long time, so that vibration acceleration is relatively small, response speed is low, noise is large, meanwhile, omni-directional vibration lacks directivity, a complex vibration effect cannot be achieved, and energy consumption is relatively high.
The piezoelectric ceramic tactile vibrator is made of piezoelectric ceramic material and is another vibration feedback means. When the piezoelectric ceramic material is electrified, the piezoelectric ceramic material can be rapidly deformed to generate vibration, the response speed is higher, the vibration control is more accurate, and the vibration intensity is only generated in a single direction. Is a capacitive load, and thus the requirements of single-layer and multi-layer piezoelectric ceramics for driving voltages are different. Typically, a single-layer piezoelectric ceramic vibrator requires a higher voltage, while a multi-layer piezoelectric ceramic vibrator requires a lower voltage, but requires a larger drive current. Piezoelectric ceramic vibrators are expensive and limited in application range.
Disclosure of Invention
The invention aims to provide an information interaction feedback device which is used for man-machine interaction of a man-machine interface, provides feedback of touch sense and improves the experience of contact control.
The invention further aims to provide an information interaction feedback device, which realizes vibration feedback of human-computer interaction of a human-computer interface and improves the experience of contact control.
Still another object of the present invention is to provide an information interaction feedback device, which uses a vibration feedback mechanism to improve the man-machine interaction experience of a man-machine interface, so as to effectively avoid the situation of "wrong" operation against the actual purpose of a user.
Still another object of the present invention is to provide an information interaction feedback apparatus, so that a user can control a device efficiently by means of a human-computer interface, reduce invalid operations, and enhance efficiency of human-computer interaction.
Human-computer interaction refers to the use of a set communication mechanism, such as a key, contact or wave means, between a person (user) and a computer, so that the person (user) can transmit information to the computer, and the computer feeds back a response to complete the information exchange process of a task set by the person (user).
Human-machine interfaces, i.e. parts visible to the user designed for the purpose of accomplishing human-machine interaction, present information input and output media between the person (user) and the computer, such as keys of a radio, a screen of a mobile phone, or a display screen of a controller.
And the human-computer interface realizes convenience and high efficiency of user control equipment, such as media of fingerprint unlocking, one-key parking and the like.
The information interaction feedback device of the invention comprises:
the touch sensing module is used for sensing and transmitting actions of a user touch interface, such as one-dimensional sliding, two-dimensional moving or clicking (pressing) and the like, and obtaining variation information of a touch position and a space orientation thereof, namely touch information;
The pressure sensing and vibration feedback module is used for sensing the displacement of the interface, obtaining sensing information, judging the real intention of the user control equipment and providing vibration feedback for the interface;
When the true intention of the user control device is judged to be true, the touch sense information is also converged to transmit the control (operation) intention of the user to the control module, and the control module presents the response result on the interface.
A touch sensing module for an information interaction feedback device of the present invention generally comprises:
an interface defining a boundary between the user and the device (apparatus) interaction, which is locally deformed or wholly displaced upon application of a force;
And the touch sensing mechanism is used for collecting position information of a user touch interface and space orientation information of touch change.
A pressure sensing and vibration feedback module for an information interaction feedback device of the present invention generally comprises:
the force sensing piece senses the induced current generated by the displacement or the local deformation of the interface due to the stress, and judges the real intention of the user control equipment according to the acquired intensity information of the induced current;
The electromagnetic vibration piece receives the changed current (such as the current with waveform characteristics) to generate electromagnetic induction, so that the interface is displaced or locally deformed to generate vibration effect, and operation feedback which accords with the actual intention of the user is provided for the user.
Another pressure sensing and vibration feedback module for an information interaction feedback device of the present invention, comprising:
a first permanent magnet disposed on a lower side of the interface;
The second permanent magnet is arranged in alignment with the first permanent magnet and faces the first permanent magnet;
The vibration coil is wound on the outer peripheral side of the second permanent magnet, variable current is input into the vibration coil, the balance state of force between the first permanent magnet and the second permanent magnet is changed, the first permanent magnet is close to the second permanent magnet or far away from the second permanent magnet, and the driving interface is displaced or locally deformed to generate a vibration effect;
A force induction coil wound around the outer periphery of the vibration coil, wherein the interface is displaced or locally deformed by an external force to generate an induction current;
and judging the real intention of the user control equipment according to the collected electric signal change information.
The other pressure sensing and vibration feedback module for the information interaction feedback device also comprises a bracket for accommodating the electromagnetic vibration piece. For example, the second permanent magnet is arranged in the bracket, the vibration coil is wound on the outer peripheral side of the second permanent magnet, and the force induction coil is arranged on the outer peripheral side of the vibration coil.
A gap is also provided between the outer edge of the support and the underside of the interface to provide the necessary space for the interface to displace or locally deform, which is necessary for vibration feedback to occur. In the present invention, a gap is understood to be the space that exists between the outer edge of the bracket and the underside of the interface, but this does not mean that the bracket and the interface must be completely disengaged without any contact. For example, in a specific embodiment, the two end surfaces of the interface are contacted with the local side surfaces of the bracket, and the interface is moved relative to the bracket by means of the contact surface, for example, the interface is close to the second permanent magnet or far away from the second permanent magnet.
For another specific embodiment, elastic bodies are arranged at two ends of the support, two ends of the interface are arranged on the elastic bodies in a leaning way, and the interface is arranged above the support. After being stressed, the elastic body is elastically deformed, so that on one hand, the reset after the movement of the interface is facilitated, and on the other hand, the elastic action is also beneficial to balancing the acting force applied by the electromagnetic vibration piece to the interface, so that the acting force adjustment of vibration feedback is easier to realize.
The information interaction feedback device provided by the invention further comprises a light emitting component, such as an LED lamp, which is arranged in the groove body cavity of the bracket, controls the opening and closing rhythm of the light emitting component, and projects light waves on an interface to provide an indication.
The technical scheme of the invention has the beneficial effects that:
The device provided by the invention has the advantages of simple structure and lower cost. Compared with the prior known vibration feedback technology, the vibration feedback technology can realize complete vibration feedback intensity, waveform and frequency control, and is more similar to the feeling of a mechanical key.
The device provided by the invention adopts a coupling mechanism of the contact electric signal and the pressure electric signal, and takes an electric signal of capacitance change generated by the touch of a user on an interface and an induction signal generated by the change of force as a judgment basis for judging the real intention of the user to operate the human-computer interface. And when the judgment is true, providing vibration experience for the user, and feeding back the information of the operation completion to the user. The touch control method improves the touch control experience, enhances the touch feedback of the user in the interaction process of the human-computer interface, avoids the situation that the user touches the human-computer interface carelessly to start the equipment function wrongly, for example, the user calls the phone wrongly in the walking process, can effectively avoid the situation of wrong operation against the real purpose of the user, and enhances the experience and reliability of the human-computer interaction of the user.
The device provided by the invention adopts electromagnetic induction as a pressure detection means, so that the stability is high, the function is integrated in the vibration feedback mechanism, the system structure is compact, and the cost is low.
In addition, when the operation implemented by the user accords with the actual intention, the judgment capability of the operation of the user is improved by providing vibration feedback experience for the user, so that the user knows that the operation intention is correctly transmitted to the equipment, the equipment does not generate an execution result and is not a user operation problem, the problem that the user repeatedly operates the human-computer interface at high frequency when the equipment fails to respond is avoided, invalid operation is effectively reduced, and the efficiency of human-computer interaction is enhanced.
Detailed Description
The technical scheme of the present invention is described in detail below with reference to the accompanying drawings. The embodiments of the present invention are only for illustrating the technical scheme of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical scheme of the present invention, which is intended to be covered by the scope of the claims of the present invention.
The information interaction feedback device provided in this embodiment includes a contact sensing module 10 and a pressure sensing and vibration feedback module 20. The touch sensing module 10 senses and communicates the actions of the user touching the interface, such as clicking (pressing), and also obtains (captures) the continuity of the actions performed by the user touching the interface and changes in spatial orientation, such as one-dimensional sliding or movement in a two-dimensional planar space. These are known as tactile information and generally require that the user be able to generate when in contact with the interface.
The pressure sensing and vibration feedback module 20 is used for sensing the displacement of the interface, obtaining the acting force condition applied by the user to the interface, judging the real intention of the user control device, enabling the device to obtain the real intention of the user, and completing the response according to the real intention, so as to realize the efficiency of human-computer interaction. When the displacement or local deformation of the sensing interface exceeds a set threshold, the user is considered to have the real intention of controlling the equipment, instead of 'false touch', and then the equipment functions corresponding to the touch information are converged, such as fingerprint unlocking, camera shooting function starting or one-key parking, etc., the control (operation) intention of the user is transmitted to the control module of the equipment, and the control module presents the response result on the human-computer interface.
Electromagnetic induction is a reliable means for detecting the amount of displacement or local deformation of an interface. When the force applied by the user to the interface increases, the amount of displacement or local deformation of the interface increases accordingly, and the current generated in the induction coil also changes. The real intention of the user control device can be judged through the change of the induced current. When a user touches the interface by mistake, the force applied to the interface is usually small, the displacement or local deformation of the interface is small or very little, and the induced current is difficult to generate. When the user has the real intention to control the device, the user usually performs clicking (pressing) action on the interface, compared with the situation of 'false touch', the acting force applied on the interface is obviously increased, so that the interface is displaced or locally deformed, an induced current signal is generated, the control module receives the 'the user has the real intention to control the device', and the device makes a response consistent with the real intention of the user, such as unlocking the device, or opening a camera shooting function, presenting a camera shooting interface, or stopping the vehicle, and the like.
The pressure sensing and vibration feedback module 20 includes at least a vibration feedback device comprising:
the force sensing piece senses the induced current generated by the displacement or the local deformation of the interface due to the stress, and judges the real intention of the user control equipment according to the acquired intensity information of the induced current;
and the electromagnetic vibration piece receives the changed current, and the interface is caused to displace or locally deform to generate a vibration effect through electromagnetic induction.
The response is implemented by the control module to provide operational feedback that meets the user's actual intent, or to present the results to the user at a human-machine interface, such as graphically presenting an increase or decrease in volume at the interface.
A control module is understood to be an integrated system built on each subsystem, which generally consists of a system that controls all the elements (components) of the controlled system. The central processing unit is located at the core in the system, and is one of the most important components in the control system, and its function is to control and coordinate the individual elements (components) in the system.
The control module is embodied as a vehicle body control module (Body Control Module, BCM) and has the main functions of realizing discrete control functions, coordinating different functions in the vehicle through signals, controlling a plurality of electric appliances, and managing a plurality of vehicle functions such as electric door and window control, central control door lock control, alarm sound control, remote control anti-theft, light system control, internal and external illumination, windscreen wiper, electric rearview mirror heating control, instrument backlight adjustment, power management and the like.
The pressure sensing and vibration feedback module 20 further includes devices for interconversion of digital and analog signals, and power amplifiers or the like to facilitate enhancement of vibration effects.
Fig. 1 is a schematic diagram of an embodiment of an information interaction feedback device of the present invention. As shown in fig. 1, the apparatus includes a contact sensing module 10 and a pressure sensing and vibration feedback module 20. The contact sensing module 10 includes a contact sensor 100, the contact sensor 100 including an interface 110 and a contact sensing mechanism 120. The interface 110 defines the boundary between user and machine (device) interactions that undergo local deformation or global displacement upon application of force. The touch sensing mechanism 120 includes a capacitive membrane 121 to collect positional information of the user's touch interface, as well as spatial orientation information of the touch changes. Such as two-dimensional location information when the user touches (e.g., clicks or presses) the interface 110, i.e., corresponds to a particular function the user intends to trigger the device to perform, such as turning on a camera, or turning on a music player, etc. The spatial orientation information (one-dimensional or two-dimensional spatial position change information) that occurs upon user contact with the interface typically exhibits a "sliding" feature on the interface, and corresponds accordingly to another specific type of function that the user intends to trigger the device to perform, such as adjusting a function in output. Adjusting the increase or decrease in volume is one example of such a specific function. For example, the vehicle is controlled to advance or retreat under the preset function by sliding operation on the interface.
In another touch sensing module provided in this embodiment, the capacitive film 121 is disposed on the lower side of the interface 110, and the capacitive film is disposed on the lower side of the interface 110 in a manner of adhesion, bonding or assembly. When a user touches (e.g., clicks or presses) the upper side of the interface 110, the capacitive film on the lower side can sense the touch, and by means of multiple paths of IO inputs, the position information acquisition of the user touch interface and the information acquisition of the spatial orientation change of the touch are realized, so that 1) the touch position and 2) the orientation change ("movement") direction of the touch are judged.
The pressure sensing and vibration feedback module 20 applied to the information interaction feedback device according to the present embodiment includes a vibration feedback device 200, where the vibration feedback device 200 includes a first permanent magnet 210 and a second permanent magnet 220. The first permanent magnet 210 is disposed on the lower side of the interface 110, and is connected to the interface 110 by, for example, attachment, adhesion, or assembly. The second permanent magnet 220 is disposed in alignment with the first permanent magnet 210 and faces the first permanent magnet 210.
The vibration coil 230 is wound around the outer peripheral side of the second permanent magnet 220. And inputting the changed current into the vibration coil, changing the balance state of the force between the first permanent magnet and the second permanent magnet, enabling the first permanent magnet to be close to the second permanent magnet or far away from the second permanent magnet, and driving the interface to displace or locally deform to generate a vibration effect.
The force induction coil 240 is wound around the outer peripheral side of the vibration coil 230. When the interface 110 is displaced or partially deformed by an external force to generate an induced current, the real intention of the user control device can be determined according to the intensity information of the collected current. For example, if the induced current is greater than a set threshold, the user is considered to have a real intention to control the device.
Further, the induced current collected by the force induction coil 240 is converted into a digital signal with a voltage and time relationship through ADC, and the situation that the user has the real intention of the control device can be further judged through a pressure detection algorithm. Such as in a state of pressing the interface or in a state of releasing after pressing the interface. The method comprises the steps of judging whether an interface is pressed or released after the interface is pressed according to the positive value and the negative value of the voltage, judging the pressing strength of a user according to the change rate of the voltage, judging the situation that the user has the real intention of control equipment, and responding according to the information by a control module.
On the other hand, according to the user's intention, a current is input to the vibration coil 230, and the interface 110 vibrates under the electromagnetic induction, providing interactive feedback to the user. According to different control intentions, various forms of changing currents can be loaded to generate various vibration modes, such as music playing, vibration for 3 times, and vibration for 1 time when the volume is adjusted. And different intensity changes and time periods are correspondingly set for each vibration, so that interaction experience of multiple types of vibration is provided.
The other vibration feedback device 200 of the present embodiment further includes a bracket 250 for accommodating the electromagnetic vibration member. For example, the second permanent magnet 220 is placed in the groove body accommodating cavity of the bracket 250, the vibration coil 230 is wound around the outer circumferential side of the second permanent magnet 220, and the force induction coil 240 is disposed on the outer circumferential side of the vibration coil 230. The first permanent magnet 210 is fixed on the lower side of the interface 110, aligned with the second permanent magnet 220, and disposed in a face-to-face arrangement. The first permanent magnet 210 and the second permanent magnet 220 exhibit attractive magnetic force therebetween. The current loaded through the vibration coil 230 provides an opposing force such that the first permanent magnet 210 and the second permanent magnet 220 maintain a spaced apart space therebetween without the attraction. Or both ends of the interface 110 are rested on the brackets 250, while the interface 110 is supported by the brackets 250 such that a space is maintained between the first permanent magnet 210 and the second permanent magnet 220.
A vibration gap 300 is also provided between the support 250 and the underside of the interface 110 to provide the necessary space for the interface 110 to displace or locally deform, which is necessary for vibration feedback to occur. In order to achieve the vibration gap 300 between the bracket 250 and the underside of the interface 110, the first and second permanent magnets 210, 220 are set to the same polarity and are mutually exclusive. I.e., when the end of the first permanent magnet 210 facing the second permanent magnet 220 is S-pole, the end of the second permanent magnet 220 facing the first permanent magnet 210 is S-pole, and when the end of the first permanent magnet 210 facing the second permanent magnet 220 is N-pole, the end of the second permanent magnet 220 facing the first permanent magnet 210 is N-pole. In the present embodiment, the vibration gap 300 should be understood as a space existing between the outer edge of the bracket 250 and the lower side of the interface 110, but this does not mean that the bracket 250 and the interface 110 must be completely separated from each other without any contact. For example, in one embodiment, the end surfaces of the two ends of the interface 110 are in contact with the local side surfaces of the support 250, and the interface 110 is also moved relative to the support 250 by the contact surface, for example, near the second permanent magnet 220 or far from the second permanent magnet 220.
As shown in fig. 2, elastic bodies 260 are provided at both ends of the bracket 250, and both ends of the interface 110 are provided on these elastic bodies 260, so that the interface 110 is provided above the bracket 250. After the interface 110 is stressed, the elastic body 260 is pressed to displace, namely, the displacement close to the second permanent magnet 220, an induced current is generated in the induction coil 240, a digital signal of a forward voltage and time relation is formed through ADC digital-to-analog conversion according to the information of the induced current, and the judgment of the real intention of a user with control equipment is realized through a pressure detection algorithm. For example, if the voltage and time relationship is greater than a set threshold, then the user is considered to have a real intent to control the device.
In addition, after the elastic body 260 is deformed, when the external force is removed, the elastic body 260 pushes the interface 110 to reset and displace again, namely, displace away from the second permanent magnet 220, the induction current is generated again at the induction coil 240, and digital signals of negative voltage and time relation are formed again through ADC digital-to-analog conversion, so that the time gap condition of the user clicking the interface is obtained, and the real intention of the user with the control device is further judged. For example, if the user presses and releases the interface too briefly, then it is considered that there is a "false touch" situation, which is not a true intent of the user control device, or the user changes intent after touching the interface. On the other hand, the elastic action provided by the elastic body 260 also facilitates balancing the force applied by the electromagnetic vibration member to the interface 110 (such as the magnetic force from the second permanent magnet), so that the force adjustment of the vibration feedback is easier to achieve.
While the device of this embodiment provides vibration feedback, optical feedback may also be employed, such as illuminating an LED to illuminate an interface or providing a flashing light, etc. The skilled person will be aware of and will be able to implement the device according to this embodiment from the products that are currently available for use. As shown in fig. 1 and 2, the LED400 is disposed in the cavity of the housing 250, and when the LED is turned on, light waves are applied to the interface 110 to provide an indication.
Fig. 3 is a schematic diagram of an embodiment of a method for implementing information interaction feedback according to the technical scheme of the present invention. As shown in fig. 3, which includes a signal sensing system and a feedback system. The capacitive membrane (input 1) and the pressure sensor/induction coil (input 2) sense signals respectively and then converge. Namely, the capacitive film generates capacitive signals (position and sliding direction), and the touch position and the sliding direction are determined and identified through an algorithm after AD conversion. The pressure sensor/induction coil (input 2) generates a pressure induction signal, which is AD converted to identify the pressing state by an algorithm. Judging that the capacitance signal and the pressure sensing signal are both true indicates that the user has a real intention to control the device, and further triggers a vibration feedback signal and other control signals, such as a signal provided to the control module.
After receiving the vibration feedback signal, the transmission of the corresponding waveform library file (vibration) is controlled according to the recognized key position/sliding direction, and the small current with waveform characteristics forms the large current with waveform characteristics through the power amplifier, so that the exciter vibrates and vibration feedback is provided for a user.
In addition, after receiving the vibration feedback signal, the LED lamp control device also controls the switch of the LED to provide the state change of the LED, so that the LED lamp control is realized.
Referring to fig. 1 and 2, the contact sensing mechanism receives contact from the interface and generates an electrical signal corresponding to the contact. These electrical signals can be obtained generally by means of capacitive films. And then through multipath IO input, such as a capacitance detection algorithm, the position information acquisition of a user contact interface and the information acquisition and storage of the contact space azimuth change are realized, so that 1) the contact position and 2) the azimuth change ("movement") direction of the contact are judged.
In synchronization, when a user has an intention (hopes that the device provides a response) to contact (such as clicking or pressing) of the interface, an acting force is applied to the interface, so that the interface is displaced or locally deformed to generate an induced current, and the real intention of the user control device can be judged according to the electric signal obtained by induction. When the electric signal is larger than the set threshold value, the user is considered to have the real intention of controlling the equipment, and the electric signal generated by converging and contacting the electric signals obtained through induction is provided to the control module through the CAN/LIN, and the control module provides response, such as sending control information to the executing mechanism, so that the executing mechanism completes the expected function. The method specifically includes the steps of opening a camera to enable the camera to be in a shooting state and to display real-time images on a human-computer interface correspondingly. For example, the power of the loudspeaker is adjusted to increase or decrease the volume, and the human-computer interface is correspondingly in a state of increasing or decreasing the volume.
When the user has the real intention of controlling the device, current is also applied to the electromagnetic vibrating member, and a vibration effect is generated by electromagnetic induction. The feedback may be implemented by the control module, or by other components, or in a circuit-controlled manner. For example, when the electric signal is larger than the set threshold value, the electromagnetic vibration piece is loaded with current, under the action of electromagnetic induction, the interface moves in a high-frequency narrow range, so that a user (such as a finger) can feel the vibration effect, and feedback of the completion of the operation (or the completion of the instruction) is provided for the user. If the device responds, it is visible on the interface, or it is observable or experienced through the five sense organs. If the equipment does not respond, the equipment is indicated to have faults, and the equipment is not misoperated or invalid by a user, so that the faults need to be further searched, the frequency or the intensity of operations (such as clicking or pressing) is not continuously increased, and the efficiency and the experience of human-computer interaction are effectively improved.
And different intensity changes and time periods are correspondingly set for each vibration, so that interaction experience of multiple types of vibration is provided. The pulse current with various current intensities and time intervals is loaded into the electromagnetic vibration piece, and under the electromagnetic induction effect, the interface generates vibration modes with different intensities, rhythms and periods, so that personalized interactive feedback is provided for users. According to different control intentions, the different vibration modes are matched, so that corresponding vibration mode feedback can be provided according to the control intentions, for example, a screen is unlocked and vibrates for 3 times, one of the vibration modes is longer than the other vibration mode, for example, the sound volume is reduced and vibrates for 3 times, and each vibration is weakened than the previous vibration mode.
Fig. 4 is a schematic diagram of an embodiment of an information interaction feedback device applied to vehicle control. As shown in fig. 4, the (user) finger touches or slides (interface) the surface, and triggers capacitive touch detection, input via multiple IO ports, and a capacitive detection algorithm to obtain a detected touch position and a detected sliding direction, where the (touch) position information of the user determines which function is triggered. The user touches the sliding direction information to decide a function adjustment trend such as increasing or decreasing, and advancing or retreating.
The intended (user) touching or sliding (interface) surface with a finger is often accompanied by the application of force. Therefore, the finger pressing surface is also implemented, the pressing force of the finger acts on the permanent magnet (surface) on the elastic structure, so that the permanent magnet moves according to the pressing force intensity, a changing magnetic field acts on the (detection) coil, the generated induced electricity flows through the ADC to form a digital signal of voltage and time relation, the positive/negative value of the voltage is related to the pressing or releasing state through the pressure detection algorithm, and the voltage change rate is related to the pressing intensity, so that the pressing state information is formed. The function which is obtained by the capacitance detection algorithm and is started by the user is used, the pressing strength required by the triggering function is regulated, and when the sensitivity threshold is exceeded, the function which is started by the user is triggered, for example, the user intention is transmitted to a control module, and the control module, for example, a vehicle BCM, controls a cabin, a seat, an air conditioner, a door window and the like.
The feedback mode is determined according to the intention of the user, and comprises the content, the intensity and the like of the fed-back vibration. The vibration waveform library is formed by vibration waveform number intensity information, waveform and intensity information are contained, DAC digital-to-analog conversion is carried out, a large current with waveform information is obtained by a small current with waveform information through a power amplifier, and a coil (namely a vibration coil 230, see fig. 1 and 2) is excited, so that a variable magnetic field with waveform information is generated, the variable magnetic field acts on a permanent magnet (surface) on an elastic structure, the permanent magnet (surface) vibrates along with the variable magnetic field, intelligent surface vibration (feedback) is presented, a user (such as a finger) senses the vibration effect, and feedback of the completion of operation (or the completion of instruction) is provided for the user.