A vehicle logo switching device, a vehicle and its control method

Abstract

This invention discloses a vehicle logo switching device, a vehicle, and a control method thereof, comprising: an MCU module integrating a status detection, driving, and current detection unit, used to acquire target sensing signals to trigger target control commands to drive a motor transmission mechanism to operate in a working mode where the main vehicle logo and the secondary vehicle logo switch between each other, and to perform status detection and current detection and correction on the real-time status and real-time current during the logo switching process; a current acquisition module used to acquire real-time current signals generated during the logo switching process; a motor transmission mechanism configured to drive the main vehicle logo and the secondary vehicle logo to switch between each other via a motor, used to execute the switching action between the main vehicle logo and the secondary vehicle logo according to the target control command; and sensor modules respectively installed on the main vehicle logo and the secondary vehicle logo, used to acquire sensing signals in real time and transmit them to the MCU module; realizing personalized switching of the main and secondary vehicle logos, effectively preventing safety hazards such as false triggering and motor failure, and ensuring the stable operation of the device.

Description

Technical Field

[0001] This invention belongs to the field of vehicle logo switching technology, and particularly relates to a vehicle logo switching device, a vehicle and its control method. Background Technology

[0002] As the most direct and representative external identifier of a car brand, the car logo is an indispensable part of the vehicle. It not only carries the brand's history and culture but also reflects its market positioning and target consumer group. With the continuous development of the automotive market and the intensification of competition, the design and display of car logos have become a key focus for major automakers.

[0003] Initially, car logos were mostly fixed designs, meaning that once installed on a car, they could not be replaced or adjusted. This design was simple and inexpensive, but lacked flexibility and variety. To further enhance the flexibility and variety of car logos, logo switching devices were developed. These devices allow car owners to quickly switch between different logo styles or patterns according to personal preference or different needs, without replacing the entire logo. This greatly enriches the options for personalized car decoration. Currently, using multiple motors to control each structure of the logo can achieve logo concealment, but the structure and program are relatively complex, with low reliability and high operating costs, leaving room for improvement. Furthermore, car logos installed on vehicles are easily damaged by external forces. When a logo is damaged, it needs to be quickly replaced, but repairing damaged logos is often costly. Therefore, it is necessary to propose a logo switching device suitable for scenarios requiring rapid logo switching. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a vehicle logo switching device, a vehicle and a control method thereof, which is suitable for scenarios where vehicle logos need to be switched quickly, realizes automatic switching of vehicle logos, and ensures that the device can still operate safely and reliably when encountering various abnormal situations.

[0005] To solve the above problems, the technical solution of the present invention is as follows:

[0006] This invention provides a vehicle logo switching device, including an MCU module and a current acquisition module, a motor drive mechanism, a sensor module, and a power supply module, all electrically connected to the MCU module.

[0007] The MCU module integrates a status detection unit, a drive unit, and a current detection unit. It is used to acquire target sensing signals and trigger target control commands based on the target sensing signals to drive the motor transmission mechanism to operate in a working mode where the main vehicle logo and the secondary vehicle logo switch between each other. At the same time, it performs status detection and current detection and correction on the real-time status and real-time current during the vehicle logo switching process.

[0008] The current acquisition module is connected to the current detection unit and is used to acquire the real-time current signal generated during the logo switching process and feed it back to the MCU module.

[0009] The motor transmission mechanism is configured as an actuator that drives the main vehicle logo and the sub-vehicle logo to switch between each other through the motor drive module. It is used to perform the switching action between the main vehicle logo and the sub-vehicle logo according to the target control command and to feed back the switching status to the MCU module.

[0010] The sensor modules are respectively installed on the main vehicle logo and the secondary vehicle logo, and are used to acquire sensing signals in real time and transmit them to the MCU module.

[0011] The power supply module has one path connected to the current detection unit, which is connected to the drive module and the current acquisition module, and the other path directly connected to the MCU module. It is used to convert the input vehicle body power supply voltage into a digital power supply voltage and supply power to each module.

[0012] Among them, the status detection is the sensor signal or switch command that meets the trigger conditions for logo switching.

[0013] As a preferred embodiment, in the switching mode, when subjected to external pressure or triggered by changes in the touch state of the car logo surface, the pressure sensor / touch sensor is obtained and fed back to the MCU module. The MCU module then issues a target control command to drive the motor transmission mechanism, which retracts the main car logo located in the center display area of ​​the vehicle and simultaneously displays the secondary car logo in the center display area of ​​the vehicle, thus achieving rapid switching between the main and secondary car logos.

[0014] In detection mode, the real-time status of the logo switching process is detected. When the pressure sensor / touch sensor is triggered by external pressure or by changes in the touch state of the logo surface, the corresponding power-off command of the current pressure sensor / touch sensor is identified to effectively prevent false triggering. The real-time current during the logo switching process is detected to determine whether there is abnormal fluctuation in the real-time current value during operation, ensuring the safe operation of the motor and identifying abnormalities when the current fluctuates.

[0015] In abnormal mode, the fault handling mechanism is triggered based on the identified fault signal. When a false touch signal or a pressure signal from an external force does not reach the preset intensity threshold and a false touch signal is generated, the corresponding pressure sensor / touch sensor is diagnosed and calibrated by the MCU module.

[0016] When a stall condition other than a false trigger signal is detected, a stop command is sent to the motor and corresponding protection operations are executed. After the stall fault is cleared, a reset operation is performed to restore normal working condition, and automatic software and hardware self-tests are performed to optimize the operating condition.

[0017] Preferably, the motor drive module includes a motor and an H-bridge composed of a first MOSFET Q1, a second MOSFET Q2, a third MOSFET Q3, and a fourth MOSFET Q4. One end of the motor is connected to the collectors of the first MOSFET Q1 and the fourth MOSFET Q4, and the other end of the motor is connected to the collectors of the second MOSFET Q2 and the third MOSFET Q3. Different operating states of the motor are achieved by controlling the conduction and cutoff of the four MOSFETs.

[0018] Preferably, the power supply module includes a vehicle body power supply, an anti-reverse filtering module, and a power management module. The output terminal of the vehicle body power supply is connected to the input terminal of the anti-reverse filtering module. One output terminal of the anti-reverse filtering module is connected to the input terminal of the power management module and then to the MCU module. The other output terminal of the anti-reverse filtering module is connected to the input terminal of the drive module. The output terminal of the drive module is connected to the input terminal of the current acquisition module. The output terminal of the current acquisition module is grounded and used to output raw power from the vehicle body power supply. After anti-reverse filtering, filtering, and overvoltage protection by the anti-reverse filtering module, a pre-processed power supply is output. The power module converts the input pre-processed power supply voltage into a target digital power supply voltage and distributes the target digital power supply voltage to the next-stage H-bridge and MCU module for power supply.

[0019] Preferably, a position switch and a reset switch are also included;

[0020] The position switches are set to preset extreme positions for the corresponding strokes of the main and auxiliary vehicle logos, respectively. They are used to detect whether the corresponding vehicle logo has reached the target switching position. When the main / auxiliary vehicle logos move to the preset extreme position, the position switches are triggered and the motor stops running.

[0021] The reset switch is integrated in the vehicle's cab. When the reset switch is turned on and the position switch is simultaneously triggered, the main vehicle emblem returns to its initial position.

[0022] The main and secondary vehicle logos are linked, enabling the switching process to have both AB and BC linkage states. In the first state, upon receiving a target control command, the main vehicle logo moves from the starting B stroke node to the C stroke node for main logo retrieval, while the secondary vehicle logo moves from the A stroke node to the B stroke node for secondary logo display. In the second state, upon receiving a recovery command, the main vehicle logo moves from the C stroke node to the B stroke node for main logo display, while the secondary vehicle logo moves from the B stroke node to the A stroke node for secondary logo retrieval. Stroke node A is the starting position of the secondary vehicle logo in non-switching mode and is located in the logo retrieval area; stroke node B is the starting position of the main vehicle logo in non-switching mode and the target position of the secondary vehicle logo in switching mode, located in the vehicle center display area; stroke node C is the target position for main logo retrieval in switching mode and is located in the logo retrieval area.

[0023] Preferably, the power management module includes either a DC-DC converter or an LDO regulator.

[0024] The present invention also provides a vehicle including the logo switching device as described in the embodiments of the present invention, which will not be repeated here.

[0025] The present invention also provides a control method for the vehicle logo switching device as described in the embodiments of the present invention, comprising:

[0026] Read calibration data under the current operating status upon power-on;

[0027] Return the main and auxiliary vehicle logos to zero to ensure that the logos are in the calibrated starting position before the switching action;

[0028] Receive target control commands and determine whether to trigger the pressure sensor / touch sensor;

[0029] When the pressure sensor / touch sensor is triggered by external pressure or by changes in the touch state of the car logo surface, the pressure sensor / touch sensor is activated, and the power off command corresponding to the current pressure sensor / touch sensor is valid.

[0030] When the current power off command is valid, execute the main vehicle logo off command, run the motor to drive the main vehicle logo to perform a switching operation, record the travel information of the main vehicle logo from the starting position to the target position and read the real-time current data;

[0031] Determine whether the current switching stroke exceeds the preset extreme stroke to prevent overtravel operation and ensure that the car logo has been completely switched to the target position;

[0032] If the current switching travel exceeds the preset extreme travel, the vehicle logo switch in the driver's cab will successfully complete the switching operation between the main vehicle logo and the secondary vehicle logo, clear the power off command corresponding to the pressure sensor / touch sensor, stop the motor and put it into standby mode.

[0033] Preferably, the determination of whether the pressure sensor / touch sensor is triggered includes:

[0034] If the pressure sensor / touch sensor is triggered, the pressure sensor / touch sensor power-off command is valid. The main logo is turned off via the logo switch in the cab. The motor drives the main and auxiliary logos to switch positions. The travel information of the main and auxiliary logos from the starting position to the target position is recorded and real-time current data is read.

[0035] If the pressure sensor / touch sensor is not triggered, further determine whether the received main logo off command is a command issued by the logo switch in the driver's cab to prevent false triggering;

[0036] If the command is issued by the vehicle logo switch in the driver's cab, the motor will run to switch the main and auxiliary vehicle logos; if the command is not issued by the vehicle logo switch in the driver's cab, the power off command triggered by the pressure sensor will be checked again. If it is valid, the motor will run to switch the main and auxiliary vehicle logos; if it is invalid, the process will return to the higher level to wait for the target control command and repeat the subsequent judgment logic.

[0037] Preferably, determining whether the current switching trip exceeds the preset extreme point trip includes:

[0038] When the current switching stroke does not exceed the preset extreme stroke distance, the real-time current value obtained during the switching stroke is compared with the preset stall current value to determine whether the motor is in a stall state.

[0039] If the current real-time current value is greater than the preset stall current value, the motor will be in a stall state, and the fault diagnosis process will be initiated.

[0040] Further confirm whether the current stall condition is a fault. If the current stall condition is confirmed to be a fault, the motor stops and reports the relevant fault information to the ECU. Then, clear the pressure sensor trigger shutdown command and enter standby mode.

[0041] If it is confirmed that no fault has occurred or the current is less than the preset stall current value, the system will return to the previous level to continue waiting to receive the target control command and repeat the subsequent judgment logic.

[0042] Among the faults confirmed as stalled, those include over / under voltage, overcurrent, abnormal temperature, stalled due to foreign objects in the switching stroke, and internal faults.

[0043] Because the present invention adopts the above technical solution, it has the following advantages and positive effects compared with the prior art:

[0044] The vehicle logo switching device provided by this invention performs displacement and rotation operations by driving the logo base. During the switching process, the drive component precisely controls the movement of the logo base according to the received target control command, thereby realizing the position switching of the main logo and the secondary logo in the central display area of ​​the vehicle. The MCU module integrates a status detection unit, a drive unit, and a current detection unit, realizing comprehensive control of the logo switching process, simplifying the circuit structure, and improving the reliability and stability of the device. The current acquisition module collects the current signal during the logo switching process in real time and feeds it back to the MCU module for detection and correction, ensuring the safe operation of the motor and improving the accuracy of logo switching. The sensor module acquires sensing signals in real time and transmits them to the MCU module, enabling the device to precisely control the logo switching action. At the same time, the design of the position switch and the reset switch ensures that the logo can stop accurately when it reaches the target position, improving the switching accuracy. The power supply module, including the vehicle body power supply, the anti-reverse filtering module, and the power management module, can convert the input vehicle body power supply voltage into a stable digital power supply voltage, providing efficient and reliable power to the device. The motor drive module adopts an H-bridge design, controlling the conduction and cutoff of four MOSFETs to realize different operating states of the motor. This modular design facilitates maintenance and upgrades, improving the device's scalability. Triggering logo switching by detecting changes in the state of the pressure / touch sensor effectively prevents false triggering. Furthermore, real-time status monitoring in detection mode further reduces the possibility of false triggering. When a fault signal is detected, the device can trigger a fault handling mechanism to diagnose and calibrate the pressure / touch sensor, ensuring the device's normal operation.

[0045] The control method for the vehicle logo switching device provided by this invention, after the vehicle is powered on, first reads the calibration data of the current operating state. This data includes the initial position and motion parameters of the vehicle logo, providing a basis for subsequent logo switching actions. The main and secondary vehicle logos are reset to zero to ensure that the logos are in the calibrated starting position before the switching action, so as to accurately execute the switching command. The device continuously receives target control commands from the MCU module. These commands are generated according to different triggering conditions, such as changes in the state of the pressure sensor / touch sensor, and the operation of the logo switch in the driver's cab. The device then determines whether the pressure sensor / touch sensor is triggered: upon receiving the target control command, the device determines whether the pressure sensor / touch sensor is triggered. If triggered, it proceeds to the next step; otherwise, the device continues to wait to receive new control commands. Finally, the device executes the main logo closing command: when the pressure sensor / touch sensor is triggered, the device executes the main logo closing command, drives the motor to perform the switching operation, records the travel information of the main logo from the starting position to the target position, and reads real-time current data to ensure the safety and accuracy of the switching process. The device monitors the travel distance of the main logo in real time to determine if it has reached the preset extreme travel point. If it has not exceeded this point, the device continues monitoring; if it has exceeded it, it indicates that the main logo has been completely switched to the target position. Once it is confirmed that the main logo has been completely switched to the target position, the device clears the power-off command corresponding to the pressure sensor / touch sensor, stops the motor, and puts the motor into standby mode. At the same time, it reports relevant information to the ECU, completing the entire logo switching operation. Through integrated design, precise control logic, and the coordinated work of multiple sensors and switches, it achieves an efficient and reliable logo switching function. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the vehicle logo switching device in an embodiment of the present invention;

[0047] Figure 2 This is a schematic diagram showing the display state of the logo switching device of the present invention;

[0048] Figure 3 This is a flowchart of the control method for the logo switching device of the present invention. Detailed Implementation

[0049] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the vehicle logo switching device and control method proposed in this invention. The advantages and features of this invention will become clearer from the following description and claims.

[0050] like Figure 1 As shown, the present invention provides a car logo switching device, including an MCU module and a current acquisition module, a motor transmission mechanism, a sensor module, and a power supply module, all electrically connected to the MCU module.

[0051] The MCU module integrates a status detection unit, a drive unit, and a current detection unit. It acquires target sensing signals and triggers target control commands based on these signals to drive the motor transmission mechanism in a switching mode between the main and secondary vehicle logos. Simultaneously, it performs status detection and current detection and correction on the real-time status and current during logo switching. The microcontroller internally integrates status detection, H-bridge drive, and current detection functions. It performs status detection on the pressure sensor, reset switch, and position switch, and implements H-bridge drive and motor current detection. The current detection unit detects the motor current; when the detected current value exceeds a certain limit, it stops the motor, thereby protecting the circuit.

[0052] The current acquisition module is connected to the current detection unit and is used to acquire the real-time current signal generated during the logo switching process and feed it back to the MCU module.

[0053] The motor drive mechanism is configured as an actuator that drives the main vehicle logo and the sub-vehicle logo to switch between each other through the motor drive module. It is used to execute the switching action between the main vehicle logo and the sub-vehicle logo according to the target control command and feed back the switching status to the MCU module. The motor drive mechanism controls the conduction direction and conduction rate of the H-bridge, thereby realizing the forward or reverse operation of the motor and the control of the motor running speed.

[0054] The sensor modules are respectively installed on the main logo and the secondary logo, and are used to acquire sensing signals in real time and transmit them to the MCU module. They can be pressure sensors / touch sensors, integrated into the main logo. When a hand touch signal is detected on the main logo, the drive motor works to switch to the backup or secondary logo.

[0055] The power supply module has one path connected to the current detection unit, which is connected to the drive module and the current acquisition module, and the other path directly connected to the MCU module. It is used to convert the input vehicle body power supply voltage into a digital power supply voltage and supply power to each module. The status detection is based on the sensor signal or switch command that meets the vehicle logo switching trigger condition.

[0056] The vehicle logo switching device provided in this embodiment integrates status detection, drive, and current detection functions through an MCU module, simplifying the circuit and improving device reliability; the current acquisition module monitors the current in real time to ensure motor safety; the sensor module ensures accurate logo switching; the status detection unit responds promptly to trigger conditions to prevent misoperation; the power supply module provides a stable voltage to ensure normal device operation and optimize power usage; it quickly responds to sensor signals to achieve precise switching between the main and auxiliary logos; real-time current monitoring helps to promptly detect and handle abnormal situations, ensuring continuous device operation; the flat design saves space and facilitates integration of the control device into the limited space of a vehicle; and sensors and status detection prevent damage caused by malicious sabotage or misoperation.

[0057] Specifically, the motor drive module includes a motor and an H-bridge composed of a first MOSFET Q1, a second MOSFET Q2, a third MOSFET Q3, and a fourth MOSFET Q4, providing forward or reverse motor operation, speed control, and energy support. One end of the motor is connected to the collectors of the first MOSFET Q1 and the fourth MOSFET Q4, and the other end of the motor is connected to the collectors of the second MOSFET Q2 and the third MOSFET Q3. Different operating states of the motor are achieved by controlling the on and off states of the four MOSFETs. The H-bridge can also be composed of four switching elements such as transistors or MOSFETs. The motor is connected to the output of the H-bridge, that is, between two diagonally opposite switching elements. Different operating states of the motor are achieved by controlling the on and off states of the four switching elements. Taking a DC motor as an example, when Q1 and Q4 are on and Q2 and Q3 are off, the current flows from the positive terminal of the power supply through Q1, the motor, and Q4 back to the negative terminal of the power supply, causing the motor to rotate forward. When Q2 and Q3 are on and Q1 and Q4 are off, the current flows from the positive terminal of the power supply through Q2, the motor, and Q3 back to the negative terminal of the power supply, causing the motor to rotate in reverse. This enables the motor to rotate in both directions and adjust its speed, meeting the needs of different operating conditions. Switching elements such as MOSFETs or transistors have the characteristics of low on-state voltage drop and high switching frequency, which improves the driving efficiency of the motor. The H-bridge circuit has a simple structure, stable operation, and reduced failure rate. Compared with other complex motor drive solutions, the H-bridge circuit has a lower cost and is easy to apply on a large scale.

[0058] Specifically, the power supply module includes a vehicle body power supply, an anti-reverse filtering module, and a power management module. The output terminal of the vehicle body power supply is connected to the input terminal of the anti-reverse filtering module. One output terminal of the anti-reverse filtering module is connected to the input terminal of the power management module and then to the MCU module. The other output terminal of the anti-reverse filtering module is connected to the input terminal of the drive module. The output terminal of the drive module is connected to the input terminal of the current acquisition module. The output terminal of the current acquisition module is grounded and used to output raw power from the vehicle body power supply. After anti-reverse filtering, filtering, and overvoltage protection by the anti-reverse filtering module, a pre-processed power supply is output. The power module converts the input pre-processed power supply voltage into a target digital power supply voltage and distributes the target digital power supply voltage to the next-stage H-bridge and MCU module for power supply. The system includes a vehicle body power supply, which is not limited to a 12V or 24V / 48V device; a reverse filtering module, which provides reverse power protection, filtering protection, and overvoltage protection, while also supplying power to the next-stage H-bridge and MCU; and a power management module, which converts the input vehicle body power voltage into a digital power supply voltage to power the MCU and other low-voltage modules. The reverse filtering module effectively prevents reverse connection of the power supply, avoiding equipment damage, and provides filtering and overvoltage protection. The power management module converts the vehicle body power supply into a stable digital power supply voltage, ensuring a reliable power supply to all parts of the device. The pre-processed power supply is distributed to the H-bridge and MCU modules as needed, optimizing power usage, improving energy efficiency, reducing the risk of failure due to power supply problems, enhancing the overall safety of the device, adapting to the power characteristics of different vehicle models, and ensuring the compatibility and reliability of the device in various vehicles.

[0059] Specifically, the logo switching device provided in this embodiment also includes a position switch and a restore switch;

[0060] The position switches are set to preset extreme positions for the corresponding strokes of the main and auxiliary vehicle logos, respectively. They are used to detect whether the corresponding vehicle logos have reached the target switching position. When the main / auxiliary vehicle logos run to the preset extreme position, the position switches are triggered and the motor stops running. The preset extreme position is the endpoint position that can be reached under the switching stroke.

[0061] The reset switch is integrated in the vehicle's cab. When the reset switch is turned on and the position switch is simultaneously triggered, the main vehicle emblem returns to its initial position.

[0062] To achieve rapid switching and reduce the time and steps required, the main and secondary vehicle logos are linked, enabling logo switching states with AB and BC stroke node linkage. In the first state, upon receiving a target control command, the main vehicle logo moves from stroke node B to stroke node C for main logo retrieval, while the secondary vehicle logo moves from stroke node A to stroke node B for secondary logo display. In the second state, upon receiving a recovery command, the main vehicle logo moves from stroke node C to stroke node B for main logo display, while the secondary vehicle logo moves from stroke node B to stroke node A for secondary logo retrieval. Stroke node A is the non-switching mode for the secondary vehicle logo. The first stroke node (B) is the starting position of the main logo in non-switching mode and the target position of the secondary logo in switching mode, located in the vehicle's center display area (where the logo is visible). The second stroke node (C) is the target position for the main logo during switching mode, located in the logo recycling area and thus hidden. This linkage ensures synchronization between the main and secondary logos during switching, avoiding potential problems or errors caused by asynchrony. It achieves rapid switching response when the logo is touched by external force, resulting in efficient and stable logo switching. This not only improves switching efficiency and system stability but also optimizes the user experience, making the logo switching process smoother and more natural. (See also...) Figure 2 As shown, the above settings also ensure that the logo can accurately reach the target position during the switching process, improving the accuracy and reliability of the switching; the main and auxiliary logos are linked to each other, realizing synchronous switching and restoration, ensuring the integrity and continuity of the display; the restoration switch in the cab makes operation more convenient and reduces the complexity of operation; when the logo reaches the preset position, it automatically stops to prevent overshoot or damage, improving the safety of the device; it can adapt to different display needs, and the logo can be quickly switched and restored through simple commands.

[0063] To achieve rapid switching, the principle of this embodiment is as follows: In switching mode, when subjected to external pressure or triggered by changes in the touch state of the car logo surface, the pressure sensor / touch sensor acquires a sensing signal and feeds it back to the MCU module. The MCU module then issues a target control command to drive the motor transmission mechanism, retrieving the main car logo located in the center display area of ​​the vehicle and simultaneously displaying the secondary car logo in the center display area, thus achieving rapid switching between the main and secondary car logos. In implementation, one method uses a capacitive touch sensor: when a conductor such as a human finger approaches or touches the car logo surface, it changes the electric field distribution between the electrodes inside the sensor, causing a change in capacitance. If a significant change in capacitance is detected and exceeds a set threshold, it can be determined as a touch operation, thereby triggering the car logo switching command. Another method uses a resistive pressure sensor: employing a Wheatstone bridge circuit structure, when external pressure acts on the elastic diaphragm of the sensor, the resistance of the strain gauge changes, causing the Wheatstone bridge to become unbalanced, and the output voltage signal changes accordingly. By measuring the change in the output voltage signal, when the change reaches a set standard, it can be determined that pressure has been detected, thus confirming that external pressure has been applied and triggering the corresponding command. One approach uses pressure-sensitive touch technology: combining a pressure sensor with a touch sensor. When a user touches the car logo, the touch action is first detected by a capacitive sensor, and then the pressure sensor detects the force of the touch. If the force reaches a preset threshold, the car logo switching command will be triggered. This technology can provide more accurate operation feedback, avoid false triggers, and achieve rapid switching within 0.5 seconds.

[0064] In this embodiment, determining whether the pressure sensor / touch sensor is triggered by external pressure or a change in the touch state of the car logo surface is a process that comprehensively considers multiple factors, as explained below: Threshold setting: Appropriate thresholds are set for both the pressure sensor and the touch sensor. For the pressure sensor, when the detected pressure value exceeds the set pressure threshold, it is determined that effective external pressure has been applied. For the touch sensor, when the detected signal strength, touch area, or other parameters exceed the set touch threshold, a touch operation is determined to have occurred. These thresholds are typically adjusted and determined based on the actual application environment and requirements. For example, when external pressure is applied, a suitable touch signal strength threshold is determined. Only when the touch signal strength is higher than this threshold is it considered a valid touch operation, thus executing commands such as opening a door. Non-human external forces such as tree branches or stones are considered invalid touch operations.

[0065] Timing characteristic judgment: The judgment is based on the timing characteristics of the signal. For example, a brief, instantaneous pressure change or touch signal may be interference and will not be responded to; however, a pressure or touch signal lasting for a certain period of time will be considered a valid operation command. The judgment of signal timing characteristics can be achieved by setting a time window or using filtering algorithms. For example, during driving, if the surface of the car logo is only briefly touched, the device may ignore this signal; but if the touch time exceeds a certain duration, such as more than 0.5 seconds, the device will determine it as a valid car logo switching command.

[0066] Signal change rate judgment: The rate of change of pressure or touch signal is calculated to determine whether it is a genuine operation. If the rate of change of the signal is within a certain range and conforms to the logic of normal operation, it is considered a valid command; if the rate of change of the signal is abnormal, it may be interference or misoperation. For example, when a finger quickly swipes across the surface of a car logo, the rate of change of the touch signal will be large. In this case, the car logo switching command may not be triggered. Only when the finger touches the car logo steadily will the signal change rate be small and stable, and it will be considered a valid switching operation. The above method, by reasonably setting thresholds, analyzing signal characteristics, and combining vehicle status and environmental factors for judgment, can improve the reliability and accuracy of the device, providing users with a more convenient and safer user experience.

[0067] In detection mode, the system monitors the real-time status during logo switching. When external pressure or changes in the touch state of the logo surface trigger the pressure sensor / touch sensor, it identifies the corresponding shutdown command to effectively prevent false triggering. It also monitors the real-time current during logo switching to ensure motor safety and prevents foreign objects like stones from blocking the motor. In abnormal mode, the system triggers a fault handling mechanism based on identified fault signals. If a false touch signal or pressure signal from an external force fails to reach a preset threshold, the MCU module diagnoses and calibrates the corresponding pressure sensor / touch sensor. When a stall condition other than a false touch signal is detected, a stop command is sent to the motor, and corresponding protection operations are performed. After eliminating the stall fault, a reset operation is performed to restore normal operation, and automatic software and hardware self-checks are conducted to optimize the operating status. For example, if a motor malfunctions, such as overheating, abnormal speed, or inability to start, the MCU module will attempt protective measures based on preset algorithms and logic. These measures might include reducing the motor's power output, adjusting its operating parameters, or attempting to restart it. If these measures fail, the device will record detailed fault information and display a corresponding fault message to the driver via the vehicle's dashboard or central control screen. It may also restrict further logo switching to prevent the fault from escalating. When a sensor malfunctions, such as a touch sensor consistently reporting false touch signals or a pressure sensor failing to detect pressure changes correctly, the MCU module will diagnose and calibrate the sensor, attempting to compensate for errors through software algorithms or switching to a backup sensor. When external interference causes switching anomalies, such as severe vibrations during vehicle operation or electromagnetic interference affecting logo switching, the device will temporarily suspend the switching operation and wait for the interference source to disappear. Simultaneously, the MCU module will check and correct its own program operation status, clearing any erroneous data or states caused by the interference. Once the interference disappears and the device returns to normal, the logo switching operation will continue. If the interference lasts too long or is too strong, the device will issue a warning to the driver, informing them that there is an abnormality in the current logo switching.

[0068] Based on the same inventive concept, this embodiment also provides a vehicle, including the logo switching device as described in the above embodiments.

[0069] Based on the same inventive concept, see [link to inventive concept] Figure 3 As shown, this embodiment also provides a control method for the vehicle logo switching device described in the above embodiments, including:

[0070] Upon power-up, the calibration data under the current operating status is read. The calibration data includes the starting position and target position of the vehicle logo, as well as key parameters during the switching process.

[0071] By resetting the main and auxiliary vehicle icons to zero, the system ensures that the icons are in their calibrated starting positions before the switching action. For example, the starting position of the main vehicle icon is the B stroke node, which is located at the center of the vehicle's central display area, and the starting position of the auxiliary vehicle icon is the A stroke node, which is the leftmost stroke position. During the switching, the main vehicle icon moves from the B stroke node to the C stroke node, which is the rightmost stroke position, and the auxiliary vehicle icon moves from the A stroke node, which is the leftmost stroke position, to the B stroke node to reach the display area. By resetting the main and auxiliary vehicle icons to zero, the system ensures that each switching is performed under the same initial conditions, thereby improving the accuracy of the switching.

[0072] Receive target control commands and determine whether to trigger the pressure sensor / touch sensor;

[0073] When the pressure sensor / touch sensor is triggered by external pressure or by changes in the touch state of the car logo surface, the pressure sensor / touch sensor is activated, and the touch-off command corresponding to the current pressure sensor / touch sensor is valid. The touch-off command here refers to an internal instruction or signal triggered by external input such as pressure or touch to control the car logo switching operation.

[0074] When the current power off command is valid, execute the main vehicle logo off command, run the motor to drive the main vehicle logo to perform a switching operation, record the travel information of the main vehicle logo from the starting position to the target position and read the real-time current data;

[0075] The system determines whether the current switching travel exceeds the preset extreme travel distance to prevent overtravel and ensure that the logo has been fully switched to the target position. Only when the logo moves to a position exceeding the extreme travel distance can it be ensured that the logo has been fully switched to the target state. If the current travel distance is less than or equal to the extreme travel distance, the logo may not be fully switched, affecting the usage effect and safety.

[0076] If the current switching stroke exceeds the preset extreme stroke, the logo switch in the driver's cab successfully completes the switching operation between the main logo and the secondary logo, clears the corresponding power-off command of the pressure sensor / touch sensor, stops the motor and puts it into standby mode. The above control method automatically reads calibration data and judges trigger conditions, realizing intelligent control of logo switching, ensuring that the logo is in the starting position before switching, improving the accuracy of switching, recording stroke information and real-time current data, facilitating monitoring of the logo switching process, preventing overtravel operation, ensuring that the logo is completely switched to the target state to avoid damage, clearing the power-off command and putting the motor into standby mode, improving the stability and reliability of the device. The current switching journey refers to the route from the main vehicle logo to the C travel node and the route from the auxiliary vehicle logo to the B travel node. The preset extreme point journey refers to the extreme position or maximum travel range that the vehicle logo can reach during the switching process. By comparing the current running journey with the extreme point journey, it is possible to accurately determine whether the vehicle logo has reached the target position. If the current running journey is less than the extreme point journey, the device may mistakenly determine that the vehicle logo has been switched, thereby stopping the work of the drive module and causing the vehicle logo to be switched incompletely.

[0077] This can be understood as follows: the control process reads the calibration data from the current operating state upon power-on and resets the main and auxiliary vehicle logos to zero, ensuring that the logos are in the predetermined starting position before each switch, thus improving the accuracy and consistency of logo switching. It can automatically receive target control commands and intelligently execute logo switching operations based on the triggering status of pressure or touch sensors. This automated control reduces human intervention and improves the system's intelligence level. During the switching process, the system records the main logo's travel information and real-time current data. This helps monitor the logo switching process, ensures smooth switching, and allows for fault diagnosis when necessary. By determining whether the current switching travel exceeds the preset extreme travel, the system ensures that the logo has been completely switched to the target position, preventing logo damage or incomplete switching due to overtravel. Clearing the power-off command and putting the motor into standby mode helps protect the system from unnecessary energy consumption and wear, while also improving system stability and reliability.

[0078] Furthermore, determining whether the pressure sensor / touch sensor is triggered includes:

[0079] If the pressure sensor / touch sensor is triggered, the pressure sensor / touch sensor power-off command is valid. The main logo is turned off via the logo switch in the cab. The motor drives the main and auxiliary logos to switch positions. The travel information of the main and auxiliary logos from the starting position to the target position is recorded and real-time current data is read.

[0080] If the pressure sensor / touch sensor is not triggered, further determine whether the received main logo off command is a command issued by the logo switch in the driver's cab to prevent false triggering;

[0081] If the command originates from the vehicle logo switch inside the driver's cab, the motor will run to switch the primary and secondary logos. If the command does not originate from the vehicle logo switch inside the driver's cab, the validity of the pressure sensor's power-off command will be checked again. If valid, the motor will run to switch the primary and secondary logos; otherwise, the system will return to the upstream unit to wait for the target control command and repeat the subsequent judgment logic. This effectively distinguishes between triggers from the pressure sensor / touch sensor and commands from the vehicle logo switch inside the driver's cab, avoiding misoperation and ensuring that only valid commands will execute the logo switching, thus enhancing the stability of the device. By recording travel information and real-time current data, precise monitoring of the logo switching process can be achieved, enabling appropriate judgments and actions based on different situations, thereby improving the device's intelligence level. Here, the command originating from the vehicle logo switch inside the driver's cab refers to the logo switching command actively triggered by the driver or vehicle control system inside the driver's cab. This command is issued through a physical switch, touch screen interface, or other electronic control methods. By effectively distinguishing between triggers from pressure / touch sensors and commands from the vehicle logo switch in the driver's cab, misoperation is avoided, ensuring that only valid commands will execute the logo switching, thus enhancing the stability and reliability of the device. It can make corresponding judgments and processes based on different situations, such as triggers from pressure / touch sensors or commands from the vehicle logo switch in the driver's cab, improving the device's intelligence level. By recording travel information and real-time current data, precise monitoring of the logo switching process is achieved, helping to promptly identify and resolve potential problems, ensuring smooth logo switching. Furthermore, it can determine whether the received main logo closing command is issued by the vehicle logo switch in the driver's cab, preventing false triggering and improving the device's fault tolerance.

[0082] Furthermore, determining whether the current switching trip exceeds the preset extreme point trip includes:

[0083] When the current switching stroke does not exceed the preset extreme stroke distance, the real-time current value obtained during the switching stroke is compared with the preset stall current value to determine whether the motor is in a stall state.

[0084] If the current real-time current value is greater than the preset stall current value, the motor will be in a stall state, and the fault diagnosis process will be initiated.

[0085] Further confirm whether the current stall condition is a fault. If the current stall condition is confirmed to be a fault, the motor stops and reports the relevant fault information to the ECU (Electronic Control Unit). Then, clear the pressure sensor trigger shutdown command and enter standby mode.

[0086] If it is confirmed that no fault has occurred or the current is less than the preset stall current value, the system will return to the previous level to continue waiting to receive the target control command and repeat the subsequent judgment logic.

[0087] Among the faults confirmed as stalled, there are over / under voltage, overcurrent, abnormal temperature, stalling caused by foreign objects in the switching stroke, and internal faults. The above judgment process monitors the motor status in real time, promptly detects potential problems such as stalling, and prevents more serious faults from occurring. Once a fault is confirmed, the machine is immediately stopped and reported to the ECU to avoid equipment damage or safety accidents. Accurately judging the cause of the fault reduces misjudgment and unnecessary downtime, improving the reliability of the device. It also facilitates maintenance personnel to quickly locate and solve problems, reducing maintenance costs.

[0088] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they shall still fall within the protection scope of the present invention.

Claims

1. A vehicle logo switching device, characterized in that, It includes an MCU module and a current acquisition module, a motor drive mechanism, a sensor module, and a power supply module, all electrically connected to the MCU module. The MCU module integrates a status detection unit, a drive unit, and a current detection unit. It is used to acquire target sensing signals and trigger target control commands based on the target sensing signals to drive the motor transmission mechanism to operate in a working mode where the main vehicle logo and the secondary vehicle logo switch between each other. At the same time, it performs status detection and current detection and correction on the real-time status and real-time current during the vehicle logo switching process. The current acquisition module is connected to the current detection unit and is used to acquire the real-time current signal generated during the logo switching process and feed it back to the MCU module. The motor transmission mechanism is configured as an actuator that drives the main vehicle logo and the sub-vehicle logo to switch between each other through the motor drive module. It is used to perform the switching action between the main vehicle logo and the sub-vehicle logo according to the target control command and to feed back the switching status to the MCU module. The sensor modules are respectively installed on the main vehicle logo and the secondary vehicle logo, and are used to acquire sensing signals in real time and transmit them to the MCU module. The power supply module has one path connected to the current detection unit, which is connected to the drive module and the current acquisition module, and the other path directly connected to the MCU module. It is used to convert the input vehicle body power supply voltage into a digital power supply voltage and supply power to each module. Among them, the status detection is the sensor signal or switch command that meets the trigger conditions for logo switching.

2. The vehicle logo switching device as described in claim 1, characterized in that, In the switching mode, when subjected to external pressure or triggered by changes in the touch state of the car logo surface, the pressure sensor / touch sensor is obtained and fed back to the MCU module. The MCU module then issues a target control command to drive the motor transmission mechanism, which retracts the main car logo located in the center display area of ​​the vehicle and simultaneously displays the secondary car logo in the center display area of ​​the vehicle, thus achieving rapid switching between the main and secondary car logos. In detection mode, the real-time status of the car logo switching process is detected. When the pressure sensor / touch sensor is triggered by external pressure or by changes in the touch state of the car logo surface, the touch-off command corresponding to the current pressure sensor / touch sensor is identified to effectively prevent false triggering. The real-time current during the logo switching process is detected to determine whether there are abnormal fluctuations in the real-time current value during operation, ensuring the safe operation of the motor and identifying abnormalities when the current fluctuates. In abnormal mode, the fault handling mechanism is triggered based on the identified fault signal. When a false touch signal or a pressure signal from an external force does not reach the preset intensity threshold and a false touch signal is generated, the corresponding pressure sensor / touch sensor is diagnosed and calibrated by the MCU module. When a stall condition other than a false trigger signal is detected, a stop command is sent to the motor and corresponding protection operations are executed. After the stall fault is cleared, a reset operation is performed to restore normal working condition, and automatic software and hardware self-tests are performed to optimize the operating condition.

3. The vehicle logo switching device as described in claim 1, characterized in that, The motor drive module includes a motor and an H-bridge composed of a first MOSFET Q1, a second MOSFET Q2, a third MOSFET Q3, and a fourth MOSFET Q4. One end of the motor is connected to the collectors of the first MOSFET Q1 and the fourth MOSFET Q4, and the other end of the motor is connected to the collectors of the second MOSFET Q2 and the third MOSFET Q3. Different operating states of the motor are achieved by controlling the conduction and cutoff of the four MOSFETs.

4. The vehicle logo switching device as described in claim 1, characterized in that, The power supply module includes a vehicle body power supply, an anti-reverse filtering module, and a power management module. The output terminal of the vehicle body power supply is connected to the input terminal of the anti-reverse filtering module. One output terminal of the anti-reverse filtering module is connected to the input terminal of the power management module and then to the MCU module. The other output terminal of the anti-reverse filtering module is connected to the input terminal of the drive module. The output terminal of the drive module is connected to the input terminal of the current acquisition module. The output terminal of the current acquisition module is grounded and used to output raw power from the vehicle body power supply. After anti-reverse filtering, filtering, and overvoltage protection by the anti-reverse filtering module, a pre-processed power supply is output. The power module converts the input pre-processed power supply voltage into a target digital power supply voltage and distributes the target digital power supply voltage to the next-stage H-bridge and MCU module for power supply.

5. The vehicle logo switching device as described in claim 1, characterized in that, It also includes position switches and reset switches; The position switches are set to preset extreme positions for the corresponding strokes of the main and auxiliary vehicle logos, respectively. They are used to detect whether the corresponding vehicle logo has reached the target switching position. When the main / auxiliary vehicle logos move to the preset extreme position, the position switches are triggered and the motor stops running. The reset switch is integrated in the vehicle's cab. When the reset switch is turned on and the position switch is simultaneously triggered, the main vehicle emblem returns to its initial position. The main and secondary vehicle logos are linked, enabling the switching process to have both AB and BC linkage states. In the first state, upon receiving a target control command, the main vehicle logo moves from the starting B stroke node to the C stroke node for main logo retrieval, while the secondary vehicle logo moves from the A stroke node to the B stroke node for secondary logo display. In the second state, upon receiving a recovery command, the main vehicle logo moves from the C stroke node to the B stroke node for main logo display, while the secondary vehicle logo moves from the B stroke node to the A stroke node for secondary logo retrieval. Stroke node A is the starting position of the secondary vehicle logo in non-switching mode and is located in the logo retrieval area; stroke node B is the starting position of the main vehicle logo in non-switching mode and the target position of the secondary vehicle logo in switching mode, located in the vehicle center display area; stroke node C is the target position for main logo retrieval in switching mode and is located in the logo retrieval area.

6. The vehicle logo switching device as described in claim 4, characterized in that, The power management module includes either a DC-DC converter or an LDO regulator.

7. A vehicle, characterized in that, Includes the vehicle logo switching device as described in any one of claims 1 to 6.

8. A control method for a vehicle logo switching device as described in any one of claims 1 to 6, characterized in that, include: Read calibration data under the current operating status upon power-on; Return the main and auxiliary vehicle logos to zero to ensure that the logos are in the calibrated starting position before the switching action; Receive target control commands and determine whether to trigger the pressure sensor / touch sensor; When the pressure sensor / touch sensor is triggered by external pressure or by changes in the touch state of the car logo surface, the pressure sensor / touch sensor is activated, and the power off command corresponding to the current pressure sensor / touch sensor is valid. When the current power off command is valid, execute the main vehicle logo off command, run the motor to drive the main vehicle logo to perform a switching operation, record the travel information of the main vehicle logo from the starting position to the target position and read the real-time current data; Determine whether the current switching stroke exceeds the preset extreme stroke to prevent overtravel operation and ensure that the car logo has been completely switched to the target position; If the current switching travel exceeds the preset extreme travel, the vehicle logo switch in the driver's cab will successfully complete the switching operation between the main vehicle logo and the secondary vehicle logo, clear the power off command corresponding to the pressure sensor / touch sensor, stop the motor and put it into standby mode.

9. The control method for the vehicle logo switching device as described in claim 8, characterized in that, The determination of whether the pressure sensor / touch sensor is triggered includes: If the pressure sensor / touch sensor is triggered, the pressure sensor / touch sensor power-off command is valid. The main logo is turned off via the logo switch in the cab. The motor drives the main and auxiliary logos to switch positions. The travel information of the main and auxiliary logos from the starting position to the target position is recorded and real-time current data is read. If the pressure sensor / touch sensor is not triggered, further determine whether the received main logo off command is a command issued by the logo switch in the driver's cab to prevent false triggering; If the command is issued by the vehicle logo switch in the driver's cab, the motor will run to switch the main and auxiliary vehicle logos; if the command is not issued by the vehicle logo switch in the driver's cab, the power off command triggered by the pressure sensor will be checked again. If it is valid, the motor will run to switch the main and auxiliary vehicle logos; if it is invalid, the process will return to the higher level to wait for the target control command and repeat the subsequent judgment logic.

10. The control method for the vehicle logo switching device as described in claim 8, characterized in that, The determination of whether the current switching trip exceeds the preset extreme point trip includes: When the current switching stroke does not exceed the preset extreme stroke distance, the real-time current value obtained during the switching stroke is compared with the preset stall current value to determine whether the motor is in a stall state. If the current real-time current value is greater than the preset stall current value, the motor will be in a stall state, and the fault diagnosis process will be initiated. Further confirm whether the current stall condition is a fault. If the current stall condition is confirmed to be a fault, the motor stops and reports the relevant fault information to the ECU. Then, clear the pressure sensor trigger shutdown command and enter standby mode. If it is confirmed that no fault has occurred or the current is less than the preset stall current value, the system will return to the previous level to continue waiting to receive the target control command and repeat the subsequent judgment logic. Among the faults confirmed as stalled, those include over / under voltage, overcurrent, abnormal temperature, stalled due to foreign objects in the switching stroke, and internal faults.

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