CN213534448U - Gesture detection device, vehicle-mounted terminal, vehicle-mounted central control screen and vehicle-mounted central control system - Google Patents
Gesture detection device, vehicle-mounted terminal, vehicle-mounted central control screen and vehicle-mounted central control system Download PDFInfo
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- CN213534448U CN213534448U CN201922455767.4U CN201922455767U CN213534448U CN 213534448 U CN213534448 U CN 213534448U CN 201922455767 U CN201922455767 U CN 201922455767U CN 213534448 U CN213534448 U CN 213534448U
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Abstract
The application provides a gesture detection device, vehicle-mounted terminal, on-vehicle well accuse screen and on-vehicle center control system, the device includes: the device comprises a gesture signal acquisition component, a control component and a lower position response component; the gesture signal acquisition assembly is connected with the control assembly, and the lower response assembly is connected with the control assembly; the gesture signal acquisition assembly generates corresponding induced current signals according to gestures of a user and transmits the induced current signals to the control assembly; the control component calls the lower response component according to the induction current signal. The infrared recognition and electric field emission receiving circuit device is simpler, smaller in required volume, low in generation cost and compact in structure.
Description
Technical Field
The application relates to the field of gesture detection, in particular to a gesture detection device, a vehicle-mounted terminal, a vehicle-mounted central control screen and a vehicle-mounted central control system.
Background
Along with the continuous improvement of the controllable requirement of the touch screen, the touch screen can be conveniently operated and is more and more concerned, and the traditional touch screen control technology can not meet the requirements of people. In the capacitive touch screen technology, the operation function can be realized only after a finger touches the screen, the identification of sliding actions such as up-down, left-right and the like can be generated, and the sliding actions can be frequently used when pictures and web pages are browsed.
The existing touch screen gesture recognition technology comprises image recognition, infrared recognition, an electric field transmitting and receiving circuit and the like. These gesture recognition techniques require additional cameras or infrared circuits, add additional cost, and are susceptible to external environmental influences and are unstable.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present application is proposed to provide a gesture detection device, an in-vehicle terminal, an in-vehicle center control screen, and an in-vehicle center control system that overcome or at least partially solve the above problems, including:
a gesture detection apparatus, the apparatus comprising: the device comprises a gesture signal acquisition component, a control component and a lower position response component;
the gesture signal acquisition assembly is connected with the control assembly, and the lower response assembly is connected with the control assembly;
the gesture signal acquisition assembly generates corresponding induced current signals according to gestures of a user and transmits the induced current signals to the control assembly; the control component calls the lower response component according to the induction current signal.
Furthermore, the gesture signal acquisition assembly comprises a touch screen, a differential interaction signal acquisition circuit and a current signal amplification circuit;
the touch screen is connected with the differential interaction signal acquisition circuit, and the differential interaction signal acquisition circuit is connected with the current signal amplification circuit;
the touch screen generates corresponding induced current according to the gesture change of a user, the differential interaction signal acquisition circuit acquires the induced current and generates an induced current signal, and the current signal amplification circuit amplifies the induced current signal.
Further, the differential interaction signal acquisition circuit includes: the circuit comprises a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2, a capacitor C3 and a differential amplifier U1;
one end of the resistor R1 is connected with the positive electrode of the touch screen, and the other end of the resistor R1 is connected with the negative phase input end of the differential amplifier U1;
one end of the resistor R2 is connected with the negative electrode of the touch screen, and the other end of the resistor R2 is connected with the non-inverting input end of the differential amplifier U1;
one end of the resistor R3 is connected with the RG + end of the differential amplifier U1, and the other end of the resistor R3 is connected with the RGREF end of the differential amplifier U1;
one end of the capacitor C1 is connected between the resistor R1 and the negative phase input end of the differential amplifier U1, and the other end of the capacitor C1 is connected between the resistor R2 and the positive phase input end of the differential amplifier U1;
one end of the capacitor C2 is connected between the resistor R3 and the RG + terminal of the differential amplifier U1, and the other end of the capacitor C2 is connected between the resistor R3 and the RGREF terminal of the differential amplifier U1;
one end of the capacitor C3 is connected between the capacitor C1 and the non-inverting input end of the differential amplifier U1, and the other end of the capacitor C3 is connected to the ground;
the output end of the differential amplifier U1 is connected with the current signal amplifying circuit.
Further, the current signal amplifying circuit includes: the circuit comprises a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a signal amplifier U2 and a signal amplifier U3;
one end of the capacitor C4 is connected with the differential interaction signal acquisition circuit, and the other end of the capacitor C4 is connected with the resistor R4;
the other end of the resistor R4 is connected with the negative phase input end of the signal amplifier U2;
one end of the resistor R6 is connected with an internal power supply, and the other end of the resistor R6 is connected with the non-inverting input end of the signal amplifier U2;
the output end of the signal amplifier U2 is connected with the resistor R5 through the capacitor C6;
the other end of the resistor R5 is connected with the negative phase input end of the signal amplifier U3;
one end of the resistor R7 is connected between the resistor R4 and the negative phase input end of the signal amplifier U2, and the other end of the resistor R7 is connected between the output end of the signal amplifier U2 and the capacitor C6;
one end of the resistor R8 is connected between the resistor R6 and the non-inverting input end of the signal amplifier U2, and the other end of the resistor R8 is connected to the ground wire;
one end of the capacitor C5 is connected between the resistor R8 and the non-inverting input end of the signal amplifier U2, and the other end of the capacitor C5 is connected between the resistor R8 and the ground wire;
the non-inverting input end of the signal amplifier U3 is connected between the resistor R6 and the capacitor C5, and the output end of the signal amplifier U3 is connected to the control component through the capacitor C7;
one end of the resistor R9 is connected between the resistor R5 and the negative phase input end of the signal amplifier U3, and the other end of the resistor R9 is connected between the output end of the signal amplifier U3 and the capacitor C7.
Further, the control assembly includes: an A/D conversion controller, a DSP processor, and a terminal device processor,
the A/D conversion controller is connected with the current signal amplifying circuit, receives the induced current signal transmitted by the current signal amplifying circuit, converts the induced current signal amplified by the current signal amplifying circuit into a digital signal, and sends the digital signal to the DSP processor;
the DSP is connected with the A/D conversion controller, receives the digital signal transmitted by the A/D conversion controller, analyzes the digital signal and sends the analyzed signal to the terminal equipment processor;
and the terminal equipment processor is respectively connected with the DSP processor and the lower corresponding component, receives the digital signal transmitted by the DSP processor, and matches and calls the corresponding lower response component according to the analysis signal.
Further, the lower response component includes at least one of a display screen, a speaker, and an indicator light.
Further, the touch screen is a capacitive touch screen.
An in-vehicle terminal comprises the gesture detection device in any one of the above embodiments.
An in-vehicle center control screen comprises the gesture detection device in any one of the above embodiments.
A vehicle-mounted center control system comprises the vehicle-mounted terminal in the embodiment or the vehicle-mounted center control screen in the embodiment.
The application has the following advantages:
in an embodiment of the application, the gesture signal acquisition component is connected with the control component, and the lower response component is connected with the control component; the gesture signal acquisition assembly generates corresponding induced current signals according to gestures of a user and transmits the induced current signals to the control assembly; the control component calls the lower response component according to the induction current signal. The infrared recognition and electric field emission receiving circuit device is simpler, smaller in required volume, low in generation cost and compact in structure.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the present application will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic block diagram of a gesture detection apparatus according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a differential interaction signal acquisition circuit of a gesture detection apparatus according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a current signal amplifying circuit of the gesture detection device according to an embodiment of the present disclosure.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, a gesture detection apparatus provided in an embodiment of the present application is illustrated, the apparatus including: the device comprises a gesture signal acquisition component, a control component and a lower position response component;
the gesture signal acquisition assembly is connected with the control assembly, and the lower response assembly is connected with the control assembly;
the gesture signal acquisition assembly generates corresponding induced current signals according to gestures of a user and transmits the induced current signals to the control assembly; the control component calls the lower response component according to the induction current signal.
It should be noted that the gesture induced current signal is an analog signal.
In an embodiment of the application, the gesture signal acquisition component is connected with the control component, and the lower response component is connected with the control component; the gesture signal acquisition assembly generates corresponding induced current signals according to gestures of a user and transmits the induced current signals to the control assembly; the control component calls the lower response component according to the induction current signal. The infrared recognition and electric field emission receiving circuit device is simpler, smaller in required volume, low in generation cost and compact in structure.
Hereinafter, the gesture detection device in the present exemplary embodiment will be further described.
In an embodiment of the application, the gesture signal acquisition assembly comprises a touch screen, a differential interaction signal acquisition circuit and a current signal amplification circuit;
the touch screen is connected with the differential interaction signal acquisition circuit, and the differential interaction signal acquisition circuit is connected with the current signal amplification circuit;
the touch screen generates corresponding induced current according to the gesture change of a user, the differential interaction signal acquisition circuit acquires the induced current and generates an induced current signal, and the current signal amplification circuit amplifies the induced current signal.
In an embodiment of the present application, the touch screen is a capacitive touch screen, wherein the touch screen is configured to sense a gesture, and when the gesture approaches the touch screen and is within an effective range (10cm), the touch screen senses a change in current at different positions due to a capacitance change at different weak positions, so as to generate the induced current signal.
Referring to fig. 2, in an embodiment of the present application, the differential interaction signal acquisition circuit includes: the circuit comprises a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2, a capacitor C3 and a differential amplifier U1;
one end of the resistor R1 is connected with the positive electrode of the touch screen, and the other end of the resistor R1 is connected with the negative phase input end of the differential amplifier U1;
one end of the resistor R2 is connected with the negative electrode of the touch screen, and the other end of the resistor R2 is connected with the non-inverting input end of the differential amplifier U1;
one end of the resistor R3 is connected with the RG + end of the differential amplifier U1, and the other end of the resistor R3 is connected with the RGREF end of the differential amplifier U1;
one end of the capacitor C1 is connected between the resistor R1 and the negative phase input end of the differential amplifier U1, and the other end of the capacitor C1 is connected between the resistor R2 and the positive phase input end of the differential amplifier U1;
one end of the capacitor C2 is connected between the resistor R3 and the RG + terminal of the differential amplifier U1, and the other end of the capacitor C2 is connected between the resistor R3 and the RGREF terminal of the differential amplifier U1;
one end of the capacitor C3 is connected between the capacitor C1 and the non-inverting input end of the differential amplifier U1, and the other end of the capacitor C3 is connected to the ground;
the output end of the differential amplifier U1 is connected with the current signal amplifying circuit.
Referring to fig. 3, in an embodiment of the present application, the current signal amplifying circuit includes: the circuit comprises a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a signal amplifier U2 and a signal amplifier U3;
one end of the capacitor C4 is connected with the differential interaction signal acquisition circuit, and the other end of the capacitor C4 is connected with the resistor R4;
the other end of the resistor R4 is connected with the negative phase input end of the signal amplifier U2;
one end of the resistor R6 is connected with an internal power supply, and the other end of the resistor R6 is connected with the non-inverting input end of the signal amplifier U2;
the output end of the signal amplifier U2 is connected with the resistor R5 through the capacitor C6;
the other end of the resistor R5 is connected with the negative phase input end of the signal amplifier U3;
one end of the resistor R7 is connected between the resistor R4 and the negative phase input end of the signal amplifier U2, and the other end of the resistor R7 is connected between the output end of the signal amplifier U2 and the capacitor C6;
one end of the resistor R8 is connected between the resistor R6 and the non-inverting input end of the signal amplifier U2, and the other end of the resistor R8 is connected to the ground wire;
one end of the capacitor C5 is connected between the resistor R8 and the non-inverting input end of the signal amplifier U2, and the other end of the capacitor C5 is connected between the resistor R8 and the ground wire;
the non-inverting input end of the signal amplifier U3 is connected between the resistor R6 and the capacitor C5, and the output end of the signal amplifier U3 is connected to the control component through the capacitor C7;
one end of the resistor R9 is connected between the resistor R5 and the negative phase input end of the signal amplifier U3, and the other end of the resistor R9 is connected between the output end of the signal amplifier U3 and the capacitor C7.
In an embodiment of the present application, the control assembly includes: an A/D conversion controller, a DSP processor, and a terminal device processor,
the A/D conversion controller is connected with the current signal amplifying circuit, receives the induced current signal transmitted by the current signal amplifying circuit, converts the induced current signal amplified by the current signal amplifying circuit into a digital signal, and sends the digital signal to the DSP processor;
the DSP is connected with the A/D conversion controller, receives the digital signal transmitted by the A/D conversion controller, analyzes the digital signal and sends the analyzed signal to the terminal equipment processor;
it should be noted that the DSP processor processes and determines according to the received digital signal, identifies the motion direction, position, and intensity of the gesture, processes these data, and transmits them to the terminal device processor, thereby implementing the control of the gesture on the touch screen. Wherein, the moving direction can be from far to near, left to right, right to left, top to bottom, bottom to top, clockwise and counterclockwise.
And the terminal equipment processor is respectively connected with the DSP processor and the lower corresponding component, receives the digital signal transmitted by the DSP processor, and matches and calls the corresponding lower response component according to the analysis signal.
In one embodiment of the present application, the lower response component includes at least one of a display screen, a speaker, and an indicator light.
The application mainly realizes the control of the terminal equipment based on human gestures. The traditional touch screen needs to be touched by hands to operate. When the gesture is close to the touch screen, the gesture and the touch screen generate changes of different positions of capacitance, so that the current of different positions changes slightly, and the traditional touch screen detection circuit cannot effectively recognize the signal. According to the gesture recognition method and device, a differential interaction signal acquisition circuit and a strong current signal amplification circuit are added, a differential interaction signal acquisition technology is adopted, weak gesture signals can be effectively recognized, and then the weak gesture signals are amplified through the current signal amplification circuit, so that the weak gesture recognition signals are recognized. The differential interaction signal acquisition circuit acquires weak current generated by capacitance change at different positions when a gesture approaches the touch screen, transmits the weak current to the current signal amplification circuit for amplification, and then converts the weak current into a digital signal through the A/D conversion controller and transmits the digital signal to the DSP for processing. The DSP processor performs pixel mapping conversion between the capacitive touch screen module and the LCD module on the data, thereby ensuring that the touch point sensed by the user on the touch screen is the point pointed by the user. And analyzing and processing the obtained data, recognizing control commands of different gestures, and sending the control commands to the terminal equipment processor for corresponding operation. The technology is used for enabling the operation of the equipment to be easier, and has good practicability and better user experience.
The gesture detection device disclosed by the application approaches to the front of the capacitive touch screen through the capacitive touch screen according to the detection gesture, the effective range is preferably 10cm, and a capacitor is formed between a hand and the touch screen. When the gesture is moved, the touch screen and the gesture generate weak changes of capacitance at different positions, so that weak current at different positions changes, namely, induced current signals are generated. The differential interaction signal acquisition circuit can effectively acquire the weak induced current signal, then the induced current signal with the current change caused by the change of the capacitance of a plurality of points on the touch screen is amplified through the current signal amplification circuit, the amplified induced current signal is converted into a digital signal through the A/D conversion controller, and the digital signal is processed by the DSP to judge the sliding position, direction and intensity of the gesture so as to perform corresponding control. Therefore, the effect of controlling without touching the touch screen can be achieved.
The application also discloses a vehicle-mounted terminal of an embodiment, which comprises the gesture detection device in any one of the above embodiments.
The application also discloses a vehicle-mounted central control screen of an embodiment, which comprises the gesture detection device in any one of the above embodiments.
The application also discloses a vehicle-mounted central control system of an embodiment, which comprises the vehicle-mounted terminal in the embodiment or the vehicle-mounted central control screen in the embodiment.
While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The gesture detection device, the vehicle-mounted terminal, the vehicle-mounted central control screen and the vehicle-mounted central control system provided by the application are introduced in detail, specific examples are applied in the description to explain the principle and the implementation mode of the application, and the description of the embodiments is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A gesture detection apparatus, the apparatus comprising: the device comprises a gesture signal acquisition component, a control component and a lower position response component;
the gesture signal acquisition assembly is connected with the control assembly, and the lower response assembly is connected with the control assembly;
the gesture signal acquisition assembly generates corresponding induced current signals according to gestures of a user and transmits the induced current signals to the control assembly; the control component calls the lower response component according to the induction current signal.
2. The device of claim 1, wherein the gesture signal acquisition component comprises a touch screen, a differential interaction signal acquisition circuit, and a current signal amplification circuit;
the touch screen is connected with the differential interaction signal acquisition circuit, and the differential interaction signal acquisition circuit is connected with the current signal amplification circuit;
the touch screen generates corresponding induced current according to the gesture change of a user, the differential interaction signal acquisition circuit acquires the induced current and generates an induced current signal, and the current signal amplification circuit amplifies the induced current signal.
3. The apparatus of claim 2, wherein the differential interaction signal acquisition circuit comprises: the circuit comprises a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2, a capacitor C3 and a differential amplifier U1;
one end of the resistor R1 is connected with the positive electrode of the touch screen, and the other end of the resistor R1 is connected with the negative phase input end of the differential amplifier U1;
one end of the resistor R2 is connected with the negative electrode of the touch screen, and the other end of the resistor R2 is connected with the non-inverting input end of the differential amplifier U1;
one end of the resistor R3 is connected with the RG + end of the differential amplifier U1, and the other end of the resistor R3 is connected with the RGREF end of the differential amplifier U1;
one end of the capacitor C1 is connected between the resistor R1 and the negative phase input end of the differential amplifier U1, and the other end of the capacitor C1 is connected between the resistor R2 and the positive phase input end of the differential amplifier U1;
one end of the capacitor C2 is connected between the resistor R3 and the RG + terminal of the differential amplifier U1, and the other end of the capacitor C2 is connected between the resistor R3 and the RGREF terminal of the differential amplifier U1;
one end of the capacitor C3 is connected between the capacitor C1 and the non-inverting input end of the differential amplifier U1, and the other end of the capacitor C3 is connected to the ground;
the output end of the differential amplifier U1 is connected with the current signal amplifying circuit.
4. The apparatus of claim 2, wherein the current signal amplification circuit comprises: the circuit comprises a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a signal amplifier U2 and a signal amplifier U3;
one end of the capacitor C4 is connected with the differential interaction signal acquisition circuit, and the other end of the capacitor C4 is connected with the resistor R4;
the other end of the resistor R4 is connected with the negative phase input end of the signal amplifier U2;
one end of the resistor R6 is connected with an internal power supply, and the other end of the resistor R6 is connected with the non-inverting input end of the signal amplifier U2;
the output end of the signal amplifier U2 is connected with the resistor R5 through the capacitor C6;
the other end of the resistor R5 is connected with the negative phase input end of the signal amplifier U3;
one end of the resistor R7 is connected between the resistor R4 and the negative phase input end of the signal amplifier U2, and the other end of the resistor R7 is connected between the output end of the signal amplifier U2 and the capacitor C6;
one end of the resistor R8 is connected between the resistor R6 and the non-inverting input end of the signal amplifier U2, and the other end of the resistor R8 is connected to the ground wire;
one end of the capacitor C5 is connected between the resistor R8 and the non-inverting input end of the signal amplifier U2, and the other end of the capacitor C5 is connected between the resistor R8 and the ground wire;
the non-inverting input end of the signal amplifier U3 is connected between the resistor R6 and the capacitor C5, and the output end of the signal amplifier U3 is connected to the control component through the capacitor C7;
one end of the resistor R9 is connected between the resistor R5 and the negative phase input end of the signal amplifier U3, and the other end of the resistor R9 is connected between the output end of the signal amplifier U3 and the capacitor C7.
5. The apparatus of claim 2, wherein the control component comprises: an A/D conversion controller, a DSP processor, and a terminal device processor,
the A/D conversion controller is connected with the current signal amplifying circuit, receives the induced current signal transmitted by the current signal amplifying circuit, converts the induced current signal amplified by the current signal amplifying circuit into a digital signal, and sends the digital signal to the DSP processor;
the DSP is connected with the A/D conversion controller, receives the digital signal transmitted by the A/D conversion controller, analyzes the digital signal and sends an analysis signal to the terminal equipment processor;
and the terminal equipment processor is respectively connected with the DSP processor and the lower corresponding component, receives the digital signal transmitted by the DSP processor, and matches and calls the corresponding lower response component according to the analysis signal.
6. The apparatus of claim 1, wherein the low level response assembly comprises at least one of a display screen, a speaker, and an indicator light.
7. The device of claim 2, wherein the touch screen is a capacitive touch screen.
8. An in-vehicle terminal characterized by comprising the gesture detection apparatus according to any one of claims 1 to 7.
9. An in-vehicle center screen, characterized by comprising the gesture detection apparatus according to any one of claims 1 to 7.
10. An in-vehicle center control system characterized by comprising the in-vehicle terminal as recited in claim 8, or the in-vehicle center control screen as recited in claim 9.
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| CN111258487A (en) * | 2020-01-10 | 2020-06-09 | 深圳联安通达科技有限公司 | Gesture recognition device based on capacitive touch screen |
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| CN111258487A (en) * | 2020-01-10 | 2020-06-09 | 深圳联安通达科技有限公司 | Gesture recognition device based on capacitive touch screen |
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