Vehicle-mounted motion remote control system and motion remote control

Abstract

This utility model relates to the field of vehicle remote control technology, and discloses a vehicle-mounted sensing remote control system and a motion-sensing remote controller. The vehicle-mounted sensing remote control system includes a motion-sensing remote controller and a display screen. The motion-sensing remote controller includes a first housing, in which a first inertial measurement unit, a first microprocessor, and a first communication module are electrically connected in sequence. The display screen includes a second housing, in which a second microprocessor and a second inertial measurement unit, a second communication module, and a display driving circuit electrically connected to the second microprocessor are disposed. The first inertial measurement unit measures first motion data of the motion-sensing remote controller; the second inertial measurement unit measures second motion data of the vehicle; the second microprocessor processes the first motion data and the second motion data to obtain a cursor movement vector; and the display driving circuit drives the cursor to move according to the cursor movement vector. Through the above method, this utility model embodiment can achieve stable and accurate motion-sensing control of the cursor on the display screen.

Description

Technical Field

[0001] This utility model relates to the field of vehicle remote control technology, specifically to a vehicle-mounted motion-sensing remote control system and a motion-sensing remote controller. Background Technology

[0002] With the gradual popularization of smart cars, in-car displays are becoming increasingly intelligent and larger in size, and the content displayed on the displays is becoming richer.

[0003] Traditionally, smart car displays are controlled via remote control or touchscreen. Remote control can be cumbersome in some scenarios, while touchscreen control becomes extremely inconvenient, especially for rear-seat passengers, if the display is large. While motion-sensing remotes are becoming more common, they only work well in static environments, such as indoors. In a moving vehicle, the vibrations and bumps significantly increase the error rate of traditional motion-sensing remotes, resulting in inaccurate control and poor performance. Utility Model Content

[0004] In view of the above problems, this utility model provides a vehicle-mounted motion-sensing remote control system and a motion-sensing remote control to solve the above-mentioned technical problems.

[0005] According to one aspect of the present invention, a vehicle-mounted motion-sensing remote control system is provided. The system includes a motion-sensing remote controller and a display screen. The display screen is disposed inside the vehicle. The motion-sensing remote controller includes a first housing, in which a first inertial measurement unit, a first microprocessor, and a first communication module are electrically connected in sequence. The display screen includes a second housing, in which a second microprocessor and a second inertial measurement unit, a second communication module, and a display driver circuit electrically connected to the second microprocessor are disposed.

[0006] The first inertial measurement unit is used to measure the first motion data of the motion remote control in motion remote control mode;

[0007] The second inertial measurement unit is used to measure the second motion data of the vehicle;

[0008] The second microprocessor is used to process the first motion data and the second motion data to obtain the cursor movement vector of the display screen;

[0009] The display driving circuit is used to drive the cursor to move according to the cursor movement vector.

[0010] In one alternative embodiment, both the first inertial measurement unit and the second inertial measurement unit are provided with a metal shield, which is grounded.

[0011] In one alternative embodiment, a low-pass filter circuit is electrically connected between the first inertial measurement unit and the first microprocessor, and between the second inertial measurement unit and the second microprocessor.

[0012] In one alternative embodiment, the first housing further includes a button circuit, a switch module, and an infrared module. The button circuit and the infrared module are electrically connected to the first microprocessor, and the switch module is electrically connected between the first inertial measurement unit and the first microprocessor. When the switch module is turned on, the motion-sensing remote control switches from infrared mode to motion-sensing remote control mode.

[0013] In one alternative embodiment, both the first inertial measurement unit and the second inertial measurement unit include an accelerometer, a gyroscope, and a magnetometer.

[0014] In one alternative configuration, the display screen is a ceiling-mounted display screen.

[0015] In one alternative approach, both the first communication module and the second communication module are Bluetooth modules.

[0016] According to another aspect of the present invention, a vehicle-mounted motion-sensing remote control is provided. The motion-sensing remote control includes a housing, and the housing is provided with an inertial measurement unit, a low-pass filter circuit, a microprocessor, and a communication module that are electrically connected in sequence.

[0017] The inertial measurement unit is used to measure the motion data of the motion remote control in motion remote control mode; the microprocessor is used to perform communication processing on the motion data; and the communication module is used to send the processed motion data to the display screen in the vehicle so that the display screen can obtain the cursor movement vector of the display screen based on the processed motion data and the vehicle's motion data.

[0018] The inertial measurement unit is equipped with a metal shield, which is grounded.

[0019] In one alternative embodiment, the housing further includes a button circuit, a switch module, and an infrared module. The button circuit and the infrared module are electrically connected to the microprocessor, and the switch module is electrically connected between the inertial measurement unit and the microprocessor. When the switch module is turned on, the motion-sensing remote control switches from infrared mode to motion-sensing remote control mode.

[0020] In one alternative embodiment, the inertial measurement unit includes an accelerometer, a gyroscope, and a magnetometer.

[0021] The vehicle-mounted motion-sensing remote control system of this embodiment adopts a dual IMU architecture, effectively solving the problem of interference from vehicle movement on the motion-sensing remote control signal. Its core advantage lies in its resistance to vehicle interference. By using a second inertial measurement unit fixed to the vehicle body to sense the vehicle's own bumps and vibrations, these vibrations are canceled out of the motion-sensing remote control signal in real time during data processing, resulting in very clean and stable hand movement data. Even when the vehicle is traveling on bumpy roads, users can achieve stable and precise motion-sensing control of the display cursor, greatly improving the usability and user experience of the vehicle-mounted motion-sensing remote control.

[0022] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0024] Figure 1 A schematic diagram of an embodiment of the vehicle-mounted sensing remote control system of this utility model is shown;

[0025] Figure 2 A schematic diagram of an embodiment of the vehicle-mounted sensor remote control of this utility model is shown. Detailed Implementation

[0026] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0027] This utility model embodiment is based on a vehicle-mounted motion-sensing remote control system with dual IMUs (Inertial Measurement Units), mainly solving the problem of achieving stable and accurate motion-sensing control under bumpy driving conditions. Its core is to utilize the vehicle's IMU data to counteract the interference of the vehicle's own movement on the motion-sensing remote control signal, thereby obtaining the user's true hand-controlled remote control data.

[0028] Please see Figure 1 , Figure 1The diagram shows a structural schematic of an embodiment of the vehicle-mounted motion remote control system of the present invention. The vehicle-mounted motion remote control system includes a motion remote controller and a display screen. The display screen is located inside the vehicle. The motion remote controller is a handheld operating device. The motion remote controller includes a first housing, in which a first inertial measurement unit, a first microprocessor, and a first communication module are electrically connected in sequence. The display screen includes a second housing, in which a second microprocessor and a second inertial measurement unit, a second communication module, and a display driving circuit electrically connected to the second microprocessor are disposed.

[0029] The first inertial measurement unit (IMU) is used to measure the first motion data of the motion-sensing remote control in three-dimensional space in motion-sensing remote control mode. This first motion data includes acceleration, angular velocity, and other data. During driving, if the first IMU is in motion-sensing remote control mode, the measured first motion data includes both the user's hand movements and the vehicle's motion data. The first microprocessor receives and initially processes the first motion data, including signal calibration, noise reduction, and communication processing. The signal calibration, noise reduction, and communication processing can be implemented using existing technologies. The data is then transmitted to the first communication module, which in turn wirelessly transmits it to the second communication module of the display screen.

[0030] The second inertial measurement unit (IMU) measures the vehicle's second motion data, which includes the motion data of the display / vehicle itself in three-dimensional space (i.e., acceleration and angular velocity caused by vehicle bumps, vibrations, and turning). Unlike the first motion data, the second motion data only includes the vehicle's motion data. The second microprocessor processes the first and second motion data, including time alignment and data cancellation, to obtain the actual motion data of the user's hand and convert it into a cursor movement vector on the display. For example, the digital motion processor (DMP) built into both the first and second IMUs can be used to process the motion data, such as performing attitude calculations. The second microprocessor can then directly fuse or subtract the first and second motion data to obtain the actual motion data of the user's hand and convert it into a cursor movement vector. Alternatively, the second microprocessor can integrate an AI-capable chip (e.g., SV823 or AX630A) to efficiently run gesture recognition algorithms to process the first and second motion data and output the cursor movement vector. The conversion of user hand movement data into cursor movement vectors on the display screen can utilize existing motion-sensing remote control technology.

[0031] In this embodiment, the first and second inertial measurement units include at least an accelerometer and a gyroscope. Preferably, in addition to the accelerometer and gyroscope, the first and second inertial measurement units also include a magnetometer. The gyroscope calculates the attitude angle by integrating the angular velocity. Prolonged operation can cause gyroscope drift (i.e., accumulated errors such as temperature drift and zero-bias error), leading to the attitude data gradually deviating from the true value. The magnetometer in the first inertial measurement unit can detect the orientation change of the hand relative to the Earth's magnetic field. Combined with accelerometer and gyroscope data, it can more accurately identify complex hand movements in three-dimensional space. The magnetometer in the second inertial measurement unit can detect the orientation change of the vehicle body relative to the Earth's magnetic field. Combined with accelerometer and gyroscope data, it can more accurately identify complex vehicle movements in three-dimensional space.

[0032] Preferably, both the first and second communication modules are Bluetooth modules, or they can be StarScan chips, which can ensure low latency and high throughput of motion data transmission.

[0033] Furthermore, the display screen is a ceiling-mounted display screen, and rear passengers in the vehicle can control the display screen using a motion-sensing remote control.

[0034] In motion-sensing remote control mode, the user moves the motion-sensing remote control. The first inertial measurement unit detects the motion data of the remote control in real time. After processing by the first microprocessor, the data is transmitted wirelessly to the second communication module on the display screen via the first communication module. The second communication module on the display screen receives the motion data of the remote control. Simultaneously, the second inertial measurement unit on the display screen detects the motion data of the vehicle itself in real time. The second microprocessor performs time alignment between the motion data of the remote control and the motion data of the vehicle, for example, by using timestamps. The motion data of the vehicle (representing the movement of the vehicle itself) is used to cancel out the component of the motion data of the remote control caused by the movement of the vehicle, thus obtaining the motion data generated by the user's active hand movements and filtering out the influence of vehicle bumps and vibrations.

[0035] The second microprocessor converts the user's hand movement data (usually vector information such as angle changes and displacement changes) into vectors that control the movement of the cursor on the display screen (i.e. the direction and distance of cursor movement) according to a preset mapping relationship. For example, moving the hand left or right corresponds to moving the cursor left or right.

[0036] The display driver circuit is used to drive cursor movement according to the cursor movement vector, and the display driver circuit can use existing technology to drive cursor movement according to the cursor movement vector.

[0037] The vehicle-mounted motion-sensing remote control system of this embodiment adopts a dual IMU architecture, effectively solving the problem of interference from vehicle movement on the motion-sensing remote control signal. Its core advantage lies in its resistance to vehicle interference. By using a second inertial measurement unit fixed to the vehicle body to sense the vehicle's own bumps and vibrations, these vibrations are canceled out of the motion-sensing remote control signal in real time during data processing, resulting in very clean and stable hand movement data. Even when the vehicle is traveling on bumpy roads, users can achieve stable and precise motion-sensing control of the display cursor, greatly improving the usability and user experience of the vehicle-mounted motion-sensing remote control.

[0038] Furthermore, both the first and second inertial measurement units are externally equipped with metal shields, which are grounded. The vehicle's interior environment is a complex electromagnetic environment, containing significant electromagnetic noise from the engine, onboard electronic devices (such as GPS and central control screens), and power systems. The first and second inertial measurement units are highly sensitive to electromagnetic interference; noise can severely affect the accuracy of data measurements, causing cursor jitter or drift. To isolate electromagnetic noise, both the first and second inertial measurement units in this embodiment are externally equipped with metal shields and are properly grounded, effectively isolating electromagnetic interference within the vehicle and improving the accuracy of motion measurement data.

[0039] In one embodiment, low-pass filter circuits are electrically connected between the first inertial measurement unit and the first microprocessor, and between the second inertial measurement unit and the second microprocessor. The typical motion frequency of a user operating a motion-sensing remote control is usually less than 10Hz (e.g., wrist movement). Heat generated by the electronic components inside the first and second inertial measurement units, mechanical vibrations of the vehicle body (typically between 1kHz and 10kHz), or minute vibrations of the remote control itself (typically greater than 1kHz) all contribute to high-frequency noise. This high-frequency noise, superimposed on the motion data of the motion-sensing remote control or the vehicle body, can cause cursor positioning jitter. To reduce high-frequency noise, this embodiment includes low-pass filter circuits. The low-pass filter circuit between the first inertial measurement unit and the first microprocessor can remove high-frequency noise from heat generated by the electronic components, mechanical vibrations of the vehicle body, and minute vibrations of the remote control itself; the low-pass filter circuit between the second inertial measurement unit and the second microprocessor can also remove high-frequency noise from heat generated by the electronic components and mechanical vibrations of the vehicle body. Preferably, the low-pass filter circuit is a first-order RC low-pass filter circuit.

[0040] In one embodiment, the first housing further includes a button circuit, a switch module, and an infrared module. The button circuit and the infrared module are electrically connected to the first microprocessor, and the switch module is electrically connected between the first inertial measurement unit and the first microprocessor. When the switch module is turned on, the motion-sensing remote control switches from infrared mode to motion-sensing remote control mode. In this embodiment, the infrared mode of the motion-sensing remote control is a normal mode, with the same function as a typical infrared remote control. By pressing a button on the motion-sensing remote control to activate the button circuit, the button signal is processed by the first microprocessor and then sent to the display screen via the infrared module, thereby controlling the movement of the cursor on the display screen. The infrared mode and the motion-sensing remote control mode are switched via the switch module. The switch module is connected to the GPIO pin of the first microprocessor and the GPIO is set to input mode. The switch module can be a mechanical switch in the form of a button. When the button is pressed, the GPIO pin of the first microprocessor can detect the button press. When the button is held down, the first inertial measurement unit and the first microprocessor are connected, and the first motion data is transmitted from the first inertial measurement unit to the first microprocessor. At the same time, when the button is held down, causing the GPIO pin to reach a specific level (e.g., high level), the first microprocessor generates an interrupt signal. The interrupt signal prevents the infrared module from sending infrared signals to the display screen, thereby realizing the switching from infrared mode to motion remote control mode.

[0041] In this embodiment, each device or module can be powered by a separate power supply or share a power supply. Preferably, each device or module can be powered by a separate power supply, and corresponding step-down or voltage-regulating devices can be connected to each power supply to provide a stable power supply for each device or module.

[0042] Please see Figure 2 , Figure 2 A schematic diagram of an embodiment of the vehicle-mounted motion-sensing remote control of this utility model is shown. The motion-sensing remote control includes a housing, within which are arranged an inertial measurement unit, a low-pass filter circuit, a microprocessor, and a communication module, which are electrically connected in sequence.

[0043] The inertial measurement unit (IMU) is used to measure the motion data of the motion-sensing remote control in three-dimensional space during motion-sensing remote control mode. This motion data includes acceleration, angular velocity, and other parameters. During driving, if the IMU is in motion-sensing remote control mode, the measured motion data includes both the user's hand movements and the vehicle's motion data.

[0044] The inertial measurement unit (IMU) is electrically connected to the microprocessor via a low-pass filter circuit. Typical user movements using the motion-sensing remote control are usually less than 10Hz (e.g., wrist movement). Heat generated by the electronic components within the IMU, mechanical vibrations of the vehicle itself (typically between 1kHz and 10kHz), or minute vibrations of the remote control itself (typically greater than 1kHz) all contribute to high-frequency noise. This high-frequency noise, superimposed on the motion data of the motion-sensing remote control, causes cursor positioning jitter. To reduce high-frequency noise, this embodiment incorporates a low-pass filter circuit. This circuit removes high-frequency noise from heat generated by the electronic components, mechanical vibrations of the vehicle itself, and minute vibrations of the remote control itself. Preferably, the low-pass filter circuit is a first-order RC low-pass filter circuit.

[0045] The microprocessor receives and performs preliminary processing of motion data, including signal calibration and noise reduction, and transmits it to a communication module. The communication module then transmits the data wirelessly to the display screen, which uses the processed motion data and vehicle motion data to obtain the cursor movement vector.

[0046] In this embodiment, the inertial measurement unit includes at least an accelerometer and a gyroscope. Preferably, in addition to the accelerometer and gyroscope, the inertial measurement unit also includes a magnetometer. The gyroscope calculates the attitude angle by integrating the angular velocity. Long-term operation can cause gyroscope drift (i.e., cumulative errors such as temperature drift and zero bias error), causing the attitude data to gradually deviate from the true value. The magnetometer can detect the change in the orientation of the hand relative to the Earth's magnetic field. Combined with the data from the accelerometer and gyroscope, it can more accurately identify complex hand movements in three-dimensional space.

[0047] Preferably, the communication module is a Bluetooth module, or it can be a StarScan chip, which can ensure low latency and high throughput of motion data transmission.

[0048] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by those skilled in the art to which the embodiments of this utility model pertain.

[0049] In the description of the embodiments of this utility model, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0050] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0051] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0052] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An in-vehicle haptic remote control system, characterized by comprising: The vehicle-mounted motion-sensing remote control system includes a motion-sensing remote controller and a display screen. The display screen is located inside the vehicle. The motion-sensing remote controller includes a first housing, in which a first inertial measurement unit, a first microprocessor, and a first communication module are electrically connected in sequence. The display screen includes a second housing, in which a second microprocessor, a second inertial measurement unit, a second communication module, and a display driver circuit are electrically connected to the second microprocessor. The first inertial measurement unit is used to measure the first motion data of the motion remote control in motion remote control mode; The second inertial measurement unit is used to measure the second motion data of the vehicle; The second microprocessor is used to process the first motion data and the second motion data to obtain the cursor movement vector of the display screen; The display driving circuit is used to drive the cursor to move according to the cursor movement vector.

2. The vehicle-mounted sensor remote control system according to claim 1, characterized in that, Both the first inertial measurement unit and the second inertial measurement unit are equipped with metal shields on their exteriors, and the shields are grounded.

3. The vehicle-mounted sensor remote control system according to claim 1, characterized in that, A low-pass filter circuit is electrically connected between the first inertial measurement unit and the first microprocessor, and between the second inertial measurement unit and the second microprocessor.

4. The vehicle-mounted sensor remote control system according to claim 1, characterized in that, The first housing also includes a button circuit, a switch module, and an infrared module. The button circuit and the infrared module are electrically connected to the first microprocessor, and the switch module is electrically connected between the first inertial measurement unit and the first microprocessor. When the switch module is turned on, the motion-sensing remote control switches from infrared mode to motion-sensing remote control mode.

5. The vehicle-mounted sensor remote control system according to claim 1, characterized in that, Both the first inertial measurement unit and the second inertial measurement unit include an accelerometer, a gyroscope, and a magnetometer.

6. The vehicle-mounted sensor remote control system according to claim 1, characterized in that, The display screen is a ceiling-mounted display screen.

7. The vehicle-mounted sensor remote control system according to claim 1, characterized in that, Both the first communication module and the second communication module are Bluetooth modules.

8. A vehicle-mounted sensor remote control, characterized in that, The motion-sensing remote control includes a housing, within which are arranged an inertial measurement unit, a low-pass filter circuit, a microprocessor, and a communication module, which are electrically connected in sequence. The inertial measurement unit is used to measure the motion data of the motion remote control in motion remote control mode; the microprocessor is used to perform communication processing on the motion data; and the communication module is used to send the processed motion data to the display screen in the vehicle so that the display screen can obtain the cursor movement vector of the display screen based on the processed motion data and the vehicle's motion data. The inertial measurement unit is equipped with a metal shield, which is grounded.

9. The vehicle-mounted sensing remote control according to claim 8, characterized in that, The housing also includes a button circuit, a switch module, and an infrared module. The button circuit and the infrared module are electrically connected to the microprocessor, and the switch module is electrically connected between the inertial measurement unit and the microprocessor. When the switch module is turned on, the motion-sensing remote control switches from infrared mode to motion-sensing remote control mode.

10. The vehicle-mounted sensing remote control according to claim 8, characterized in that, The inertial measurement unit includes an accelerometer, a gyroscope, and a magnetometer.

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