CN115790819A - Vehicle-mounted touch equipment knocking detection method and device, touch equipment and storage medium - Google Patents
Vehicle-mounted touch equipment knocking detection method and device, touch equipment and storage medium Download PDFInfo
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Abstract
The application relates to a vehicle-mounted touch device knocking detection method and device, a touch device and a storage medium. The method comprises the following steps: acquiring a knocking vibration signal of the touch equipment and a vehicle body vibration signal of a vehicle; carrying out differential calculation on the knocking vibration signal and the vehicle body vibration signal to obtain a differential signal; and identifying the knocking action of the touch equipment according to the frequency and the amplitude of the differential signal. By adopting the method, the detection of the knocking action can be effectively ensured not to be influenced by the vibration of the vehicle, different operations of the touch equipment can be realized further based on the recognition of the knocking action, more humanized operation experience is provided for the operation input of the vehicle, and the diversification of the operation function of the vehicle is greatly enhanced.
Description
Technical Field
The application relates to the technical field of automobile touch control, in particular to a vehicle-mounted touch equipment knocking detection method and device, touch equipment and a storage medium.
Background
With the development of automobile technology, the operation mode of an automobile is gradually changed from an original physical key to various operation input modes, wherein a touch technology is used as an important operation input mode in the automobile, and with the popularization of an intelligent screen in the automobile field, the touch technology gradually becomes one of the mainstream of automobile operation.
The operation input mode that traditional touch technology corresponds has touch input mode, strike input mode etc. wherein, traditional strike input mode adopts motion sensor or vibration sensor to strike the discernment of action, however the vehicle all is motion state under the user state most of time, have very much vibrations, just so, because the vehicle state is unstable when traditional strike input mode is used on-vehicle touch equipment, can lead to motion sensor or vibration sensor to detect unstably, so hardly accurately discern the action of striking on the on-vehicle touch equipment, still can cause the maloperation even, be unfavorable for vehicle safety.
Disclosure of Invention
In view of the above, it is necessary to provide a vehicle-mounted touch device tapping detection method, device, touch device and computer-readable storage medium capable of accurately recognizing a tapping action of a vehicle-mounted touch device.
In a first aspect, the application provides a vehicle-mounted touch device tap detection method, which includes the following steps:
acquiring a knocking vibration signal of the touch equipment and a vehicle body vibration signal of a vehicle;
carrying out differential calculation on the knocking vibration signal and the vehicle body vibration signal to obtain a differential signal;
and identifying the knocking action of the touch equipment according to the frequency and the amplitude of the differential signal.
In one embodiment, acquiring the tapping vibration signal of the touch device and the body vibration signal of the vehicle comprises:
the knocking vibration signal of the touch equipment is acquired through a first accelerometer arranged on the back of the touch equipment or arranged in the touch equipment, and the vehicle body vibration signal of the vehicle is acquired through a second accelerometer arranged on the vehicle body.
In one embodiment, before acquiring the tapping vibration signal of the touch device and the body vibration signal of the vehicle, the method further includes:
responding to a starting signal of the vehicle, and acquiring a starting vibration signal of the touch equipment and the vehicle;
and detecting whether the first accelerometer and the second accelerometer are normal or not according to the starting vibration signals of the touch equipment and the vehicle.
In one embodiment, the step of performing a differential calculation on the knock vibration signal and the vehicle body vibration signal to obtain a differential signal includes:
preprocessing a vehicle body vibration signal to obtain a vertical vibration component of the vehicle body vibration signal in the vertical direction of the touch equipment;
and carrying out differential calculation on the knocking vibration signal and the vertical vibration component to obtain a differential signal.
In one embodiment, identifying a tap action of the touch device based on the frequency and amplitude of the differential signal comprises:
comparing the frequency and amplitude of the differential signal with a corresponding preset tapping threshold: if the frequency and the amplitude of the differential signal meet a preset knocking threshold value, identifying qualified knocking actions; and if the frequency and the amplitude of the differential signal do not meet the preset knocking threshold value, the identified knocking action is unqualified.
In one embodiment, identifying a tap action of the touch device based on the frequency and amplitude of the differential signal further comprises:
identifying action events corresponding to qualified knocking actions according to the positions and the number of touch signals on the touch equipment corresponding to the qualified knocking actions within preset detection time;
and generating a corresponding operation instruction in response to the identified action event.
In one embodiment, after acquiring the tapping vibration signal of the touch device and the body vibration signal of the vehicle, the method further comprises the following steps:
identifying the vehicle bump state based on the amplitude of the vehicle body vibration signal:
if the amplitude of the vehicle body vibration signal is larger than the preset bumping amplitude, the bumping state of the vehicle is abnormal, and the knocking detection is finished;
and if the amplitude of the vibration signal of the vehicle body is less than or equal to the preset bumping amplitude, the bumping state of the vehicle is normal, and the knocking detection is continued.
In a second aspect, the present application further provides a vehicle-mounted touch device tap detection apparatus, including:
the acquisition module is used for acquiring a knocking vibration signal of the touch equipment and a vehicle body vibration signal of the vehicle;
the difference module is used for carrying out difference calculation on the knocking vibration signal and the vehicle body vibration signal to obtain a difference signal;
and the identification module is used for identifying the knocking action of the touch equipment according to the frequency and the amplitude of the differential signal.
In a third aspect, the application further provides a touch device, which includes a memory and a processor, where the memory stores a computer program, and the processor implements the steps of the method for detecting a vehicle-mounted touch device tap according to any one of the above embodiments when executing the computer program.
In a fourth aspect, the present application further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method for detecting a tap of a vehicle-mounted touch device according to any one of the above embodiments.
According to the vehicle-mounted touch equipment knocking detection method, the device, the touch equipment and the storage medium, the vibration signals of the touch equipment and the vehicle are respectively collected, then the real vibration on the touch equipment is extracted based on the difference signals of the touch equipment and the vehicle, whether the qualified knocking action exists or not is identified through the frequency and the amplitude of the real vibration, the detection of the knocking action can be effectively guaranteed not to be influenced by the vibration of the vehicle, different operations of the touch equipment can be further realized based on the identification of the knocking action, more humanized operation experience is provided for the operation input of the vehicle, and the diversification of the operation function of the vehicle is greatly enhanced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic overall flow chart of a vehicle-mounted touch device tap detection method in one embodiment;
FIG. 2 is a schematic diagram illustrating a front-back comparison of signals in a vehicle-mounted touch device tap detection method according to an embodiment;
FIG. 3 is a schematic view of an accelerometer installation of a tapping detection method for a vehicle-mounted touch device in one embodiment;
FIG. 4 is a schematic flow chart of a method for detecting a tap of a vehicle-mounted touch device in one embodiment;
fig. 5 is a schematic diagram illustrating a touch area division of a vehicle-mounted touch device tapping detection method in one embodiment;
FIG. 6 is a single tap attenuation diagram of a method for detecting a tap of a touch device in a vehicle under one embodiment;
FIG. 7 is a schematic diagram illustrating an exemplary start detection method for detecting a tap of a touch device on a vehicle;
FIG. 8 is a block diagram showing the structure of a vehicle-mounted touch device tap detection apparatus according to an embodiment;
FIG. 9 is a diagram illustrating the internal structure of the touch device in one embodiment.
Description of reference numerals:
1. a touch device; 2. a first accelerometer; 3. a chassis; 4. a second accelerometer;
10. an acquisition module; 20. a difference module; 30. and identifying the module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Unless defined otherwise, 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 in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. In addition, "connection" in the following embodiments is understood to mean "electrical connection", "communication connection", and the like if there is a transfer of electrical signals or data between the connected objects.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
The vehicle-mounted touch equipment knocking detection method can be applied to touch equipment of a motion carrier, especially touch equipment of an automobile. The touch device may be a resistive touch device, a capacitive touch device, an infrared touch device, a surface acoustic wave touch device, or the like, and the touch device of the automobile may be, for example, an instrument panel, a center control panel, a front passenger panel, a rear seat panel, or the like of the automobile.
In one embodiment, as shown in fig. 1, there is provided a vehicle-mounted touch device tap detection method, including the steps of:
s100: acquiring a knocking vibration signal of the touch equipment and a vehicle body vibration signal of a vehicle;
specifically, the knocking vibration signal is a signal generated by vibration of the touch device, and the vehicle body vibration signal is a signal generated by vibration of the vehicle, wherein the motion sensor or the vibration sensor is respectively arranged on the touch device and the vehicle body, and is used for respectively acquiring the knocking vibration signal of the touch device and the vehicle body vibration signal of the vehicle.
In some embodiments, the accelerometer is used to collect a tapping vibration signal of the touch device and a body vibration signal of the vehicle, wherein a first accelerometer of the touch device may be disposed on a back surface of the touch device or disposed inside the touch device, and a second accelerometer of the vehicle may be disposed on a chassis of the vehicle or a component close to the chassis, which are rigidly connected. More broadly, the second accelerometer of the vehicle may be disposed on a vehicle component capable of accurately detecting and acquiring vibration information of the vehicle, and the vehicle component is not limited to a chassis of the vehicle or a component close to the chassis, such as various components of a frame of the vehicle body.
S200: carrying out differential calculation on the knocking vibration signal and the vehicle body vibration signal to obtain a differential signal;
specifically, the knocking vibration signal and the vehicle body vibration signal are subjected to differential calculation to filter the vehicle body vibration signal contained in the knocking vibration signal, wherein the differential calculation between the knocking vibration signal and the vehicle body vibration signal can be realized through a differential subtracter to obtain the differential signal. Referring to a signal waveform diagram from left to right in fig. 2, a knocking vibration signal, a vehicle body vibration signal and a differential signal of differential calculation are sequentially included, and it can be intuitively known from the diagram that the vehicle body vibration signal is filtered in the knocking vibration signal through the differential calculation to obtain a real vibration condition, namely the differential signal.
S300: and identifying the knocking action of the touch equipment according to the frequency and the amplitude of the differential signal.
Specifically, a tapping threshold corresponding to a qualified tapping action is preset, whether the tapping action corresponding to the current differential signal is qualified or not is judged according to the frequency and the amplitude of the differential signal and the preset tapping threshold, wherein a tapping frequency range and a tapping amplitude threshold are arranged in the tapping threshold, the frequency of the tapping action is limited through the tapping frequency range, signal interference exceeding the frequency range can be effectively avoided, the amplitude of the tapping action is detected through the tapping amplitude threshold, and slight accidental tapping or vibration can be effectively filtered.
According to the vehicle-mounted touch equipment knocking detection method, the vibration signals of the touch equipment and the vehicle are respectively collected, then the real vibration on the touch equipment is extracted based on the difference signals of the touch equipment and the vehicle, whether the qualified knocking action exists or not is identified through the frequency and the amplitude of the real vibration, the detection of the knocking action can be effectively guaranteed not to be influenced by the vibration of the vehicle, different operations of the touch equipment can be further realized based on the identification of the knocking action, more humanized operation experience is provided for the operation input of the vehicle, and the diversification of the operation function of the vehicle is greatly enhanced.
In one embodiment, performing a differential calculation on the tapping vibration signal and the vehicle body vibration signal, and obtaining a differential signal includes: preprocessing a vehicle body vibration signal to obtain a vertical vibration component of the vehicle body vibration signal in the vertical direction of the touch equipment; and carrying out differential calculation on the knocking vibration signal and the vertical vibration component to obtain a differential signal.
Specifically, referring to fig. 3, the first accelerometer 2 is disposed by being attached to the touch device 1, the detected knocking vibration signal is a signal perpendicular to the touch device, and the second accelerometer 4 is mounted on the chassis 3 or a component close to the chassis 3, so that the vehicle body vibration signal needs to be preprocessed to obtain a vertical vibration component in the vertical direction of the touch device, that is, the vertical vibration component is in the same direction as the knocking vibration signal, because the setting position of the second accelerometer 4 has a certain included angle with the touch device 1, thereby accurately detecting the real vibration signal on the touch device.
In one embodiment, referring to fig. 4, before performing a differential calculation on the tapping vibration signal and the body vibration signal to obtain a differential signal, the method further includes: and adjusting the timestamp of the vehicle body vibration signal so that the knocking vibration signal is synchronous with the vehicle body vibration signal.
Specifically, because gather and strike the mounting distance between the sensor of vibrations signal and automobile body vibrations signal, can have certain difference in the time, in order to rectify this difference, this embodiment still carries out the translation to automobile body vibrations signal's time stamp according to predetermined synchronous calibration volume, and this synchronous calibration volume can be based on and test the sensor of strikeing vibrations signal and automobile body vibrations signal to gathering and acquire and set for, so, has further guaranteed vehicle-mounted touch equipment and has strikeed the accuracy that detects.
In one embodiment, identifying a tap action of the touch device based on the frequency and amplitude of the differential signal further comprises: identifying action events corresponding to qualified knocking actions according to the positions and the number of touch signals on the touch equipment corresponding to the qualified knocking actions within preset detection time; and generating a corresponding operation instruction in response to the identified action event.
Specifically, based on the determination of the qualified tapping action of the touch device, in this embodiment, various action events can be further identified by combining the position and the number of the touch signal of the touch device, where the various action events include, for example, a single-point single-tap, a single-point multi-tap, a multi-point single-tap, and a multi-point multi-tap on different areas of the touch device, and further, referring to fig. 5, for example, the touch screen is divided into 4 areas (upper left, lower left, upper right, and lower right), and a single-finger double-click and a double-finger double-click are provided for the 4 areas, so 8 different action events are formed, an operation instruction corresponding to the specific action event can be configured by a user, and the vehicle-mounted MCU executes specific operations in response to the operation instruction, for example, operations of adjusting the air conditioner temperature, adjusting the volume, adjusting the air conditioner air speed, switching songs, pausing, confirming, returning, and the like.
In some embodiments, according to the number of the touch signals, the result of the identification of the tapping action of the touch device may also be checked, wherein the number of the touch signals directly corresponds to the number of the tapping actions, and whether the number of the tapping actions identified by the touch device is accurate is checked according to the number of the touch signals, so as to further improve the accuracy of the identification of the tapping actions.
Further, the identification process of the action event is described by taking a double-finger double-tap as an example:
when the touch screen is double-finger and double-knock, two knocking vibrations can be generated, and simultaneously, two touch signals can be generated on two touch positions respectively. On this basis, whether it is qualified to discern two vibrations of knocking based on above-mentioned process, wherein, refer to fig. 6, single knocking action corresponds the signal and is the attenuation of fixed attenuation ratio, specifically depend on the bradyseism material, can detect the number of times that surpass the single-click amplitude of knocking in presetting the check-out time to two vibrations of knocking in succession and judge, the single-click amplitude of knocking can get 90% of maximum amplitude, this 90% is greater than the attenuation ratio, so, can discern that there is twice to knock the action, combine frequency and amplitude and further just can judge whether qualified. Under the condition that the two-time knocking actions are qualified, the corresponding action events are identified by combining the positions and the number of the touch signals of the touch screen, wherein the times of the knocking actions can be verified based on the occurrence of the two-time touch signals, the double-finger knocking can be judged based on the two touched positions, meanwhile, the positions of the knocking on the touch screen can also be judged, and thus, the positions of the double-finger knocking, the double-finger knocking and the knocking can be identified. In conclusion, qualified double-finger double-tap can be accurately identified.
According to the detection of the knocking action by combining the touch signal, on one hand, the operation mode which can be realized is greatly expanded, on the other hand, the knocking action is verified in an auxiliary mode through the touch signal, so that the accuracy of the knocking action detection is greatly improved, the possibility of error identification is further reduced, and the vehicle operation safety is improved.
In one embodiment, referring to fig. 4, after acquiring the tapping vibration signal of the touch device and the body vibration signal of the vehicle, the method further includes: identifying the bumping state of the vehicle based on the amplitude of the vehicle body vibration signal: if the amplitude of the vehicle body vibration signal is larger than the preset bumping amplitude, the bumping state of the vehicle is abnormal, and the knocking detection is finished; and if the amplitude of the vibration signal of the vehicle body is less than or equal to the preset bumping amplitude, the bumping state of the vehicle is normal, and the knocking detection is continued.
Specifically, because the instability of vehicle motion state for the vehicle can present the vibrations of different degree, specifically by road conditions decision, so when vehicle vibrations are greater than or be greater than when knocking vibrations, can make touch device's knocking vibrations hardly detect, consequently, in order to guarantee on-vehicle touch device and knock the accuracy that detects, in knocking the testing process, real-time amplitude based on the vibration signal of automobile body monitors the state of jolting of vehicle, if the amplitude of automobile body vibration signal is greater than predetermineeing the amplitude of jolting, explain that the vehicle is jolting seriously now, the detection is knocked in the pause, if the amplitude of automobile body vibration signal is less than or equal to predetermineeing the amplitude of jolting, explain that the vehicle normally operates, then normally carry out and knock the detection.
In one embodiment, before acquiring the tapping vibration signal of the touch device and the body vibration signal of the vehicle, the method further includes: responding to a starting signal of the vehicle, and acquiring a starting vibration signal of the touch equipment and the vehicle; and detecting whether the first accelerometer and the second accelerometer are normal or not according to the starting vibration signals of the touch equipment and the vehicle.
Specifically, referring to fig. 7, when the touch device is started along with the vehicle, in response to a start signal of the vehicle, the start vibration signal in the vehicle starting process is collected through the first accelerometer of the touch device and the second accelerometer of the vehicle, wherein the vehicle is statically started, so the start vibration signal of the vehicle is relatively stable, the amplitude and the frequency of the start vibration signal collected through the two accelerometers are respectively compared with a preset start vibration threshold, if the start vibration threshold is met, it is indicated that the corresponding accelerometer is normal, and if the start vibration threshold is not met, it is indicated that the corresponding accelerometer is failed, and a failure alarm is performed.
The above embodiments will now be described in detail by way of a specific scenario, but are not limited thereto.
An accelerometer is installed on the vehicle-mounted touch equipment, an accelerometer is installed on the vehicle chassis, and the two accelerometers are respectively in signal connection with the MCU of the vehicle-mounted touch equipment.
When the vehicle starts, responding to a starting signal of the vehicle, the two accelerometers respectively collect respective starting vibration signals, and the frequency and the amplitude of the starting vibration signals are compared with a preset starting vibration threshold value: if the starting vibration threshold value is met, the accelerometer is normal, and if the starting vibration threshold value is not met, the accelerometer fails, and a fault alarm is performed.
In the normal condition of the accelerometer, executing the tapping detection of the vehicle-mounted touch device, wherein if a touch area of the vehicle-mounted touch device is tapped by a single finger twice continuously, in this case, the tapping detection process of the vehicle-mounted touch device is as follows:
in the preset detection time, the accelerometer of the vehicle-mounted touch device acquires a knocking vibration signal, the accelerometer on a vehicle chassis acquires a vehicle body vibration signal, meanwhile, the touch device detects that the touch area generates two times of touch signals, and the signals are transmitted to the MCU of the touch device to be subjected to knocking detection processing:
the MCU identifies the bumping state of the vehicle based on the amplitude of the acquired vehicle body vibration signal: if the amplitude of the vehicle body vibration signal is larger than the preset bumping amplitude, the bumping state of the vehicle is abnormal, and the knocking detection is finished; if the amplitude of the vehicle body vibration signal is smaller than or equal to the preset bumping amplitude, the bumping state of the vehicle is normal, and the knocking detection is continued;
under the condition that the bumping state of the vehicle is normal, the MCU translates the timestamp of the vehicle body vibration signal according to a preset synchronous calibration quantity to enable the vehicle body vibration signal to be synchronously aligned with the knocking vibration signal, and on the basis, the vertical vibration component of the vehicle body vibration signal in the direction vertical to the touch equipment is calculated according to the structural parameters of an accelerometer and the touch equipment on the vehicle;
the method comprises the steps that an MCU integrates a vertical vibration component and a knocking vibration signal, differential calculation is carried out to obtain a differential signal, and the MCU judges whether the knocking action is qualified or not firstly based on the frequency and the amplitude of the differential signal, wherein the times meeting requirements are detected based on a single-knocking amplitude threshold value, whether the differential signal is in an allowable range or not is detected based on a knocking frequency range, the number of qualified knocking actions is checked, 2 times of each knocking action can be detected under normal conditions, the knocking action is described as double knocking, meanwhile, under the condition that the qualified knocking action is detected, a touch area of the touch equipment and the number of knocking point digits are judged based on the position of a touch signal of the touch equipment, the number of the knocking actions can be verified based on the number of the touch signal of the touch equipment, under normal conditions, the touch area can be detected at this time as the area, the number of the knocking point digits is described as a single-point, the number of the touch signal is 2 times, the number of the qualified knocking actions obtained through detection is verified to be normal, and therefore, the knocking action of the touch equipment can be comprehensively judged and identified as a single-finger double-knocking action on the touch area, and corresponding action event can be determined according to function setting, and corresponding operation can be executed.
It should be understood that, although the steps in the flowcharts related to the above embodiments are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the flowcharts related to the above embodiments may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a part of the steps or stages in other steps.
Based on the same inventive concept, the embodiment of the application also provides a vehicle-mounted touch device knocking detection device for realizing the vehicle-mounted touch device knocking detection method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the method, so the specific limitations in the following embodiments of one or more vehicle-mounted touch device tap detection devices can be referred to the limitations on the vehicle-mounted touch device tap detection method, and are not described herein again.
In one embodiment, as shown in fig. 8, there is provided an in-vehicle touch device tap detection apparatus including:
the acquisition module 10 is used for acquiring a knocking vibration signal of the touch device and a vehicle body vibration signal of a vehicle;
the difference module 20 is configured to perform difference calculation on the knocking vibration signal and the vehicle body vibration signal to obtain a difference signal;
and the identification module 30 is used for identifying the tapping action of the touch device according to the frequency and the amplitude of the differential signal.
In one embodiment, the acquiring module acquires a tapping vibration signal of the touch device and a body vibration signal of the vehicle, and comprises: the knocking vibration signal of the touch equipment is acquired through a first accelerometer arranged on the back of the touch equipment or arranged in the touch equipment, and the vehicle body vibration signal of the vehicle is acquired through a second accelerometer arranged on the vehicle body.
In one embodiment, before the obtaining module obtains the tapping vibration signal of the touch device and the body vibration signal of the vehicle, the obtaining module further comprises: responding to a starting signal of the vehicle, and acquiring a starting vibration signal of the touch equipment and the vehicle; and detecting whether the first accelerometer and the second accelerometer are normal or not according to the starting vibration signals of the touch equipment and the vehicle.
In one embodiment, the difference module performs a difference calculation on the knock vibration signal and the vehicle body vibration signal, and obtaining a difference signal includes: preprocessing a vehicle body vibration signal to obtain a vertical vibration component of the vehicle body vibration signal in the vertical direction of the touch equipment; and carrying out difference calculation on the knocking vibration signal and the vertical vibration component to obtain a difference signal.
In one embodiment, the identifying module identifies a tapping action of the touch device according to the frequency and the amplitude of the differential signal comprises: comparing the frequency and amplitude of the differential signal with a corresponding preset tapping threshold: if the frequency and the amplitude of the differential signal meet a preset knocking threshold value, identifying qualified knocking actions; and if the frequency and the amplitude of the differential signal do not meet the preset knocking threshold value, the identified knocking action is unqualified.
In one embodiment, the identifying module identifies the tapping motion of the touch device according to the frequency and the amplitude of the differential signal further comprises: identifying the action type corresponding to the qualified knocking action according to the position and the number of the touch signals on the touch equipment corresponding to the qualified knocking action within the preset detection time; and generating a corresponding operation instruction in response to the identified action type.
In one embodiment, after the obtaining module obtains the tapping vibration signal of the touch device and the body vibration signal of the vehicle, the obtaining module further comprises: identifying the bumping state of the vehicle based on the amplitude of the vehicle body vibration signal: if the amplitude of the vehicle body vibration signal is larger than a preset starting threshold value, the bumping state of the vehicle is abnormal, and knocking detection is finished; and if the amplitude of the vehicle body vibration signal is smaller than or equal to the preset starting threshold, the bumping state of the vehicle is normal, and the knocking detection is continued.
All or part of each module in the vehicle-mounted touch equipment knocking detection device can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent of a processor in the touch device, and can also be stored in a memory in the touch device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a touch device is provided, the internal structure of which may be as shown in FIG. 9. The touch device comprises a processor, a memory, a communication interface, a display screen and an input device which are connected through a system bus. Wherein the processor of the touch device is configured to provide computing and control capabilities. The memory of the touch device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The communication interface of the touch device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a vehicle touch device tap detection method. The display screen of the touch device can be a resistive touch screen, a capacitive touch screen, an infrared touch screen, a surface acoustic wave touch screen and the like.
Those skilled in the art will appreciate that the configuration shown in fig. 9 is a block diagram of only a portion of the configuration relevant to the present application, and does not constitute a limitation on the touch device to which the present application is applied, and a particular touch device may include more or less components than those shown in the drawings, or combine certain components, or have a different arrangement of components.
In one embodiment, a touch device is provided, which includes a memory and a processor, where the memory stores a computer program, and the processor implements the tapping detection method of the vehicle-mounted touch device in any one of the above embodiments when executing the computer program. The detailed description refers to the corresponding description of the method, and is not repeated herein.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, implements any one of the above-described embodiments of the method for detecting a tap of a vehicle-mounted touch device. For a detailed description, reference is made to the corresponding description of the method, which is not repeated herein.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware related to instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include a Read-Only Memory (ROM), a magnetic tape, a floppy disk, a flash Memory, an optical Memory, a high-density embedded nonvolatile Memory, a resistive Random Access Memory (ReRAM), a Magnetic Random Access Memory (MRAM), a Ferroelectric Random Access Memory (FRAM), a Phase Change Memory (PCM), a graphene Memory, and the like. Volatile Memory can include Random Access Memory (RAM), external cache Memory, and the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others. The databases referred to in various embodiments provided herein may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing based data processing logic devices, etc., without limitation.
All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (10)
1. A vehicle-mounted touch equipment knocking detection method is characterized by comprising the following steps:
acquiring a knocking vibration signal of the touch equipment and a vehicle body vibration signal of a vehicle;
carrying out differential calculation on the knocking vibration signal and the vehicle body vibration signal to obtain a differential signal;
and identifying the knocking action of the touch equipment according to the frequency and the amplitude of the differential signal.
2. The vehicle-mounted touch device knocking detection method according to claim 1, wherein the acquiring of the knocking vibration signal of the touch device and the body vibration signal of the vehicle comprises:
the knocking vibration signal of the touch equipment is acquired through a first accelerometer arranged on the back of the touch equipment or arranged in the touch equipment, and the vehicle body vibration signal of the vehicle is acquired through a second accelerometer arranged on the vehicle body.
3. The vehicle-mounted touch device knocking detection method according to claim 2, wherein before acquiring the knocking vibration signal of the touch device and the body vibration signal of the vehicle, the method further comprises:
responding to a starting signal of the vehicle, and acquiring a starting vibration signal of the touch equipment and the vehicle;
and detecting whether the first accelerometer and the second accelerometer are normal or not according to the touch equipment and the starting vibration signal of the vehicle.
4. The vehicle-mounted touch device tapping detection method according to claim 1, wherein the step of performing differential calculation on the tapping vibration signal and the vehicle body vibration signal to obtain a differential signal comprises the steps of:
preprocessing the vehicle body vibration signal to obtain a vertical vibration component of the vehicle body vibration signal in the vertical direction of the touch equipment;
and carrying out difference calculation on the knocking vibration signal and the vertical vibration component to obtain the difference signal.
5. The vehicle-mounted touch device tapping detection method according to any one of claims 1 to 4, wherein the step of identifying the tapping action of the touch device according to the frequency and the amplitude of the differential signal comprises the following steps:
comparing the frequency and amplitude of the differential signal with a corresponding preset tapping threshold: if the frequency and the amplitude of the differential signal meet a preset knocking threshold value, identifying a qualified knocking action; and if the frequency and the amplitude of the differential signal do not meet the preset knocking threshold value, the identified knocking action is unqualified.
6. The vehicle-mounted touch device tap detection method according to claim 5, wherein the identifying the tap action of the touch device according to the frequency and the amplitude of the differential signal further comprises:
identifying action events corresponding to qualified knocking actions according to the positions and the number of touch signals on the touch equipment corresponding to the qualified knocking actions within preset detection time;
and generating a corresponding operation instruction in response to the identified action event.
7. The vehicle-mounted touch device tapping detection method according to any one of claims 1 to 4, wherein after acquiring the tapping vibration signal of the touch device and the body vibration signal of the vehicle, the method further comprises:
identifying a vehicle bump state based on the amplitude of the vehicle body vibration signal:
if the amplitude of the vehicle body vibration signal is larger than the preset bumping amplitude, the bumping state of the vehicle is abnormal, and the knocking detection is finished;
and if the amplitude of the vehicle body vibration signal is smaller than or equal to the preset bumping amplitude, the bumping state of the vehicle is normal, and the knocking detection is continued.
8. An on-vehicle touch device strikes detection device, its characterized in that, the device includes:
the acquisition module is used for acquiring a knocking vibration signal of the touch equipment and a vehicle body vibration signal of the vehicle;
the difference module is used for carrying out difference calculation on the knocking vibration signal and the vehicle body vibration signal to obtain a difference signal;
and the identification module is used for identifying the knocking action of the touch equipment according to the frequency and the amplitude of the differential signal.
9. A touch device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor realizes the steps of the method of any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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| CN202211021448.2A CN115790819A (en) | 2022-08-24 | 2022-08-24 | Vehicle-mounted touch equipment knocking detection method and device, touch equipment and storage medium |
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| CN202211021448.2A CN115790819A (en) | 2022-08-24 | 2022-08-24 | Vehicle-mounted touch equipment knocking detection method and device, touch equipment and storage medium |
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