CN115973050B - Deflection accuracy calibration system of vehicle-mounted central control screen - Google Patents
Deflection accuracy calibration system of vehicle-mounted central control screen Download PDFInfo
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Abstract
The invention discloses a deflection accuracy calibration system of a vehicle-mounted central control screen, which comprises a controller, an angle detection module and a motor, wherein the angle detection module is electrically connected with the controller, and the motor has a current detection function and can drive the central control screen to deflect; the controller receives the calibration request and then controls the motor to rotate, so that the central control screen deflects to one side limit position, and the calibration is carried out by combining the angle detection module; or the central control screen is deflected to one side limit position and then deflected to the other side limit position, and the calibration is carried out by combining the angle detection module. By adopting the method and the device for calibrating the deflection of the central control screen, the deflection possibly existing in the deflection process of the central control screen is calibrated, and the user experience is improved.
Description
Technical Field
The invention belongs to the field of automobile part control, and particularly relates to a deflection accuracy calibration system of a vehicle-mounted central control screen.
Background
At present, in order to improve user experience, most vehicle-mounted central control screens have a left-right deflection function, and the deflection device is used for driving the central control screen to deflect left and right. In the use process of a user, deflection accuracy deviation possibly exists in the central control screen, so that deviation exists between an actual deflection angle and an expected deflection angle, the central control screen cannot be centered, and user experience is affected.
CN114093280a discloses an angle correction method, an angle limiter, a display unit and a display system, which comprises the following steps: providing a driving object, wherein the driving object comprises a rotated part and a scale structure, the scale structure is arranged on the rotated part and positioned at a correction position of the rotated part, and the scale structure is configured to rotate synchronously with the rotated part; providing a motor control system, wherein a motor of the motor control system drives the rotating part to rotate; providing a sensor which is arranged on a rotating path of the scale structure and is connected with a motor control system; and correcting, namely enabling the motor to drive the rotating part to rotate, enabling the sensor to acquire a correction angle signal when the scale structure passes through, and transmitting the correction angle signal to a motor control system, wherein the motor control system adjusts the output angle of the motor based on the correction angle signal so as to perform angle correction on the rotating part. However, the correction mode is complex, and the method is not suitable for deflection accuracy calibration of the vehicle-mounted central control screen.
Disclosure of Invention
The invention aims to provide a deflection accuracy calibration system of a vehicle-mounted central control screen, so as to calibrate possible deviation in the deflection process of the central control screen and improve user experience.
The deflection accuracy calibration system of the vehicle-mounted central control screen comprises a controller, an angle detection module and a motor, wherein the angle detection module is electrically connected with the controller, and the motor has a current detection function and can drive the central control screen to deflect; the controller receives the calibration request and then controls the motor to rotate, so that the central control screen deflects to one side limit position, and the calibration is carried out by combining the angle detection module; or the central control screen is deflected to one side limit position and then deflected to the other side limit position, and the calibration is carried out by combining the angle detection module.
Preferably, the controller controls the motor to rotate after receiving the calibration request, and the deflection accuracy calibration of the central control screen is performed by updating the reference voltage and/or the angle coefficient in combination with the angle detection module.
Preferably, the deflection accuracy calibration system further comprises a central control screen support, a rotating shaft, a support body and a transmission mechanism, wherein the transmission mechanism and a motor are arranged in the support body, the rotating shaft is vertically assembled on the support body, the top end of the rotating shaft is fixedly connected with the central control screen support, and the motor drives the rotating shaft to rotate left and right through the transmission mechanism so as to drive the central control screen to deflect left and right through the central control screen support; the left limit position (namely the position of the maximum angle of the rotation shaft turning left) corresponding to the rotation shaft on the support body is provided with a left limit structure or is provided with a left limit switch, the right limit position (namely the position of the maximum angle of the rotation shaft turning right) corresponding to the rotation shaft on the support body is provided with a right limit structure or is provided with a right limit switch, and the left limit switch and the right limit switch are electrically connected with the controller. Whether the rotation shaft rotates to the left limit position or not is detected by the left limit switch, whether the rotation shaft rotates to the right limit position or not is detected by the right limit switch, and the rotation shaft is not easy to be interfered by the outside.
Preferably, the angle detection module adopts a potentiometer, and the controller identifies the left and right deflection angles of the central control screen by acquiring the voltage of the potentiometer, so that the cost is low and the implementation is easy.
Preferably, the resistor body of the potentiometer is electrically connected with the controller, and the potentiometer shaft of the potentiometer is fixed on the transmission mechanism and rotates along with the transmission mechanism, or the potentiometer shaft of the potentiometer is fixed on the rotating shaft and rotates along with the rotating shaft, or the potentiometer shaft of the potentiometer is fixed on the motor output shaft and rotates along with the motor output shaft.
Preferably, under the condition that a left limit switch is arranged on the bracket body and a right limit structure is arranged on the bracket body, the controller controls the motor to rotate after receiving the calibration request, and the method for calibrating the deflection accuracy of the central control screen by combining the potentiometer and updating the reference voltage comprises the following steps:
the motor is controlled to rotate forward to drive the rotating shaft to rotate left through the transmission mechanism, when the left limit switch is detected to be closed due to the touch of the central control screen support, the motor is controlled to stop rotating, the voltage of the potentiometer at the moment is recorded after the delay of the preset time, and the voltage is used as a reference voltage U 0 Combining with a preset angle coefficient k 0 Forming a voltage-angle relation:
storing the voltage-angle relation as a motor control parameter to finish calibration; wherein (1)>
The real-time rotation angle of the rotating shaft (also the real-time deflection angle of the central control screen) is represented, and U represents the real-time voltage of the potentiometer. The mechanical 0 degree position (i.e. left limit position) of the corresponding rotating shaft at the left limit switch, wherein the voltage of the potentiometer is the reference voltage, and the method assumes that the angle coefficient is kept unchanged and still is k 0 Only the influence of deviation of the reference voltage on deflection accuracy is considered, so that deflection accuracy calibration only needs to update the reference voltage, a left limit switch is used for detecting whether a rotating shaft rotates to a left limit position or not, and the voltage of a potentiometer at the left limit position is collected as the reference voltage, so that the deflection accuracy calibration method is not easy to be interfered by the outside, and is simple and quick.
Preferably, under the condition that a left limit switch is arranged on the bracket body and a right limit structure is arranged on the bracket body, the controller receives a calibration request and then controls the motor to rotate, and the method for calibrating the deflection accuracy of the central control screen by updating the reference voltage and the angle coefficient is as follows:
first, the motor is controlled to rotate forward to drive the rotation shaft to rotate left through the transmission mechanismWhen detecting that the left limit switch is closed due to the touch of the central control screen support, controlling the motor to stop rotating, delaying for a preset time, recording the voltage of the potentiometer at the moment, and taking the voltage as a reference voltage U 0 And (5) storing.
Secondly, controlling the motor to rotate reversely to drive the rotating shaft to rotate right through the transmission mechanism, and when detecting that the motor working current reaches the locked-rotor current and lasts for a preset time because the middle control screen support is abutted to the right limiting structure, controlling the motor to stop rotating, recording the voltage of the potentiometer at the moment and taking the voltage as a termination voltage U end And (5) storing.
Then, the formula is used:
calculating an angle coefficient k; wherein (1)>
Representing a preset maximum rotatable angle of the rotation axis (+)>
The maximum deflectable angle of the preset central control screen corresponds to an included angle formed by the left limit switch, the right limit structure and the axial lead of the rotating shaft).
Finally, a voltage-angle relationship is formed:
and storing the voltage-angle relation as a motor control parameter to finish calibration.
The position of the left limit switch corresponding to the mechanical 0 degree position (namely the left limit position) of the rotating shaft, the voltage of the potentiometer is the reference voltage, and the position of the right limit structure is the mechanical of the rotating shaft
The angular position (i.e. the right extreme position), where the voltage of the potentiometer is the end voltage. The middle position between the left limit position and the right limit position is the middle position of the central control screen. The method considers the influence of deviation of reference voltage and angle coefficient on deflection accuracy, so that the deflection accuracy calibration is to update the baseThe quasi-voltage also updates the angle coefficient, thus making the calibration result more accurate. Whether the rotating shaft rotates to the left limit position or not is detected by using the left limit switch, so that the rotating shaft is not easily interfered by the outside.
Preferably, under the condition that a left limit structure is arranged on the bracket body and a right limit switch is arranged on the bracket body, the controller controls the motor to rotate after receiving the calibration request, and the method for calibrating the deflection accuracy of the central control screen by combining the potentiometer and updating the reference voltage comprises the following steps:
the motor is controlled to rotate reversely to drive the rotating shaft to rotate right through the transmission mechanism, when the right limit switch is detected to be closed due to the touch of the middle control screen support, the motor is controlled to stop rotating, the voltage of the potentiometer at the moment is recorded after the delay of the preset time, and the voltage is used as a reference voltage U 0 Combining with a preset angle coefficient k 0 Forming a voltage-angle relation:
and storing the voltage-angle relation as a motor control parameter to finish calibration. The mechanical 0 degree position (namely the right limit position) of the corresponding rotating shaft at the right limit switch, wherein the voltage of the potentiometer is the reference voltage, and the method assumes that the angle coefficient is kept unchanged and still is k 0 Only the influence of deviation of the reference voltage on deflection accuracy is considered, so that deflection accuracy calibration only needs to update the reference voltage, a right limit switch is used for detecting whether the rotating shaft rotates to a right limit position or not, and the voltage of a potentiometer at the right limit position is collected as the reference voltage, so that the deflection accuracy calibration method is not easy to be interfered by the outside, and is simple and quick.
Preferably, under the condition that a left limit structure is arranged on the bracket body and a right limit switch is arranged on the bracket body, the controller controls the motor to rotate after receiving the calibration request, and the method for calibrating the deflection accuracy of the central control screen by updating the reference voltage and the angle coefficient is as follows:
firstly, the motor is controlled to rotate reversely to drive the rotary shaft to rotate right through the transmission mechanism, when the right limit switch is detected to be closed due to the touch of the central control screen support, the motor is controlled to stop rotating, and the time is recorded after the delay of the preset timeThe voltage of the potentiometer is taken as a reference voltage U 0 And (5) storing.
Secondly, controlling the motor to rotate forward to drive the rotating shaft to rotate left through the transmission mechanism, and when detecting that the motor working current reaches the locked-rotor current and lasts for a preset time because the middle control screen support is abutted to the left limit structure, controlling the motor to stop rotating, recording the voltage of the potentiometer at the moment, and taking the voltage as a termination voltage U end And (5) storing.
Then, the formula is used:
the angle coefficient k is calculated.
Finally, a voltage-angle relationship is formed:
and storing the voltage-angle relation as a motor control parameter to finish calibration.
The right limit switch corresponds to the mechanical 0 degree position (namely the right limit position) of the rotating shaft, the voltage of the potentiometer is the reference voltage, and the left limit structure is the mechanical of the rotating shaft
The angular position (i.e. the left extreme position), where the voltage of the potentiometer is the end voltage. The middle position between the left limit position and the right limit position is the middle position of the central control screen. According to the method, the influence of deviation of the reference voltage and the angle coefficient on deflection accuracy is considered, so that the deflection accuracy calibration needs to update the reference voltage and the angle coefficient, and the calibration result is more accurate. Whether the rotating shaft rotates to the right limit position or not is detected by using the right limit switch, so that the rotating shaft is not easily interfered by the outside.
Preferably, under the condition that a left limit switch and a right limit switch are arranged on the bracket body, the controller controls the motor to rotate after receiving the calibration request, and the method for calibrating the deflection accuracy of the central control screen by updating the reference voltage and the angle coefficient is as follows:
firstly, the motor is controlled to rotate forward to drive the rotating shaft to rotate left through the transmission mechanism,when detecting that the left limit switch is closed due to the touch of the central control screen support, controlling the motor to stop rotating, recording the voltage of the potentiometer at the moment after delaying for a preset time, and taking the voltage as a reference voltage U 0 And (5) storing.
Secondly, controlling the motor to rotate reversely to drive the rotating shaft to rotate right through the transmission mechanism, when detecting that the right limit switch is closed due to the touch of the central control screen support, controlling the motor to stop rotating, recording the voltage of the potentiometer at the moment after delaying for a preset time, and taking the voltage as a termination voltage U end And (5) storing.
Then, the formula is used:
the angle coefficient k is calculated.
Finally, a voltage-angle relationship is formed:
and storing the voltage-angle relation as a motor control parameter to finish calibration.
The position of the left limit switch corresponding to the mechanical 0 degree position (namely the left limit position) of the rotating shaft, the voltage of the potentiometer is the reference voltage, and the position of the right limit switch corresponds to the mechanical of the rotating shaft
The angular position (i.e. the right extreme position), where the voltage of the potentiometer is the end voltage. The middle position between the left limit position and the right limit position is the middle position of the central control screen. According to the method, the influence of deviation of the reference voltage and the angle coefficient on deflection accuracy is considered, so that the deflection accuracy calibration needs to update the reference voltage and the angle coefficient, and the calibration result is more accurate. Whether the rotation shaft rotates to the left limit position or not is detected by the left limit switch, whether the rotation shaft rotates to the right limit position or not is detected by the right limit switch, and the rotation shaft is not easy to be interfered by the outside.
Preferably, under the condition that a left limit structure and a right limit structure are arranged on the bracket body, the controller controls the motor to rotate after receiving the calibration request, and the method for calibrating the deflection accuracy of the central control screen by updating the reference voltage and the angle coefficient is as follows:
firstly, controlling a motor to rotate forward to drive a rotating shaft to rotate left through a transmission mechanism, when detecting that the working current of the motor reaches the blocking current due to the fact that a middle control screen support is abutted to a left limiting structure and lasts for a preset time, controlling the motor to stop rotating, recording the voltage of a potentiometer at the moment, and taking the voltage as a reference voltage U 0 And (5) storing.
Secondly, controlling the motor to rotate reversely to drive the rotating shaft to rotate right through the transmission mechanism, and when detecting that the motor working current reaches the locked-rotor current and lasts for a preset time because the middle control screen support is abutted to the right limiting structure, controlling the motor to stop rotating, recording the voltage of the potentiometer at the moment and taking the voltage as a termination voltage U end And (5) storing.
Then, the formula is used:
the angle coefficient k is calculated.
Finally, a voltage-angle relationship is formed:
and storing the voltage-angle relation as a motor control parameter to finish calibration.
The left limit structure is the mechanical 0 degree position (i.e. left limit position) of the rotating shaft, the voltage of the potentiometer is the reference voltage, and the right limit structure is the mechanical of the rotating shaft
The angular position (i.e. the right extreme position), where the voltage of the potentiometer is the end voltage. The middle position between the left limit position and the right limit position is the middle position of the central control screen. According to the method, the influence of deviation of the reference voltage and the angle coefficient on deflection accuracy is considered, so that the deflection accuracy calibration needs to update the reference voltage and the angle coefficient, and the calibration result is more accurate. Directly utilize the locked-rotor in the forward rotation process of the motor to judge whether the rotating shaft rotates to the left limit position or not and the locked-rotor in the reverse rotation process of the motor to judge whether the rotating shaft rotates to the right limit or notThe position, left limit structure, right limit structure and support body all-in-one machine shaping need not install left and right limit switch in addition, have reduced assembly process and time, and the cost is lower.
Preferably, after calibration is completed, the controller controls the motor to rotate so as to center the central control screen. That is, after calibration, the controller controls the motor to rotate according to the stored voltage-angle relation to drive the rotation shaft to rotate through the transmission mechanism
Centering the center screen (neither left nor right).
By adopting the method and the device for calibrating the deflection accuracy of the vehicle-mounted central control screen, the deviation between the actual deflection angle and the expected deflection angle of the calibrated central control screen can be eliminated, and the user experience is improved.
Drawings
Fig. 1 is a schematic diagram of the front structure of the deflection accuracy calibration system of the in-vehicle center control panel in embodiment 1.
Fig. 2 is a schematic diagram of the back structure of the deflection accuracy calibration system of the in-vehicle center control panel in embodiment 1.
Fig. 3 is a circuit block diagram of a deflection accuracy calibration system of the in-vehicle center control panel in embodiment 1.
Fig. 4 is a flowchart of the execution of the controller in the deflection accuracy calibration method of the vehicle-mounted center control panel in embodiment 1.
Fig. 5 is a flowchart of the execution of the controller in the deflection accuracy calibration method of the vehicle-mounted center control panel in embodiment 2.
Fig. 6 is a schematic structural diagram of a deflection accuracy calibration system of the in-vehicle center control panel in embodiment 3.
Fig. 7 is a circuit block diagram of a deflection accuracy calibration system of an in-vehicle center control panel in embodiment 3.
Fig. 8 is a flowchart of the execution of the controller in the deflection accuracy calibration method of the vehicle-mounted center control panel in embodiment 3.
Fig. 9 is a flowchart of the execution of the controller in the deflection accuracy calibration method of the in-vehicle center control panel in embodiment 4.
Fig. 10 is a schematic structural diagram of a deflection accuracy calibration system of an in-vehicle center control panel in embodiment 5.
Fig. 11 is a circuit block diagram of a deflection accuracy calibration system of an in-vehicle center control panel in embodiment 5.
Fig. 12 is a flowchart showing the execution of the controller in the deflection accuracy calibration method of the in-vehicle center control panel in embodiment 5.
Fig. 13 is a schematic structural diagram of a deflection accuracy calibration system of an in-vehicle center control panel in embodiment 6.
Fig. 14 is a circuit block diagram of a deflection accuracy calibration system of the in-vehicle center control panel in embodiment 6.
Fig. 15 is a flowchart showing the execution of the controller in the deflection accuracy calibration method of the in-vehicle center control panel in embodiment 6.
Detailed Description
Example 1: as shown in fig. 1, 2 and 3, the deflection accuracy calibration system of the vehicle-mounted central control screen in this embodiment includes a central control screen support 3, a rotating shaft 4, a bracket body 5, a transmission mechanism, a controller PCB board 2 integrated with a controller 6, a motor 7 with a current detection function, and an angle detection module. The angle detection module adopts a potentiometer 1. The transmission mechanism comprises a gear assembly and a worm and gear assembly (which is the prior art). The resistor of the potentiometer 1 is welded on the potentiometer PCB 10, and the potentiometer shaft of the potentiometer 1 is fixed on the gear of the gear assembly and rotates along with the gear. The transmission mechanism, the controller PCB 2, the motor 7 and the potentiometer PCB 10 are arranged in the bracket body 5, the rotating shaft 4 is vertically assembled on the bracket body 5, and the top end of the rotating shaft is fixedly connected with the central control screen support 3. The controller 6 is electrically connected with the motor 7, obtains the motor working current and controls the motor 7 to rotate. When the motor 7 rotates, the motor output shaft drives the gear assembly to rotate, the gear assembly rotates to drive the worm gear assembly to rotate, the worm gear assembly rotates to drive the rotary shaft 4 to rotate left and right, the rotary shaft 4 rotates left and right to drive the central control screen support 3 to rotate left and right, and the central control screen support 3 rotates left and right to drive the central control screen mounted on the central control screen support 3 to deflect left and right. The rotation angle of the rotation shaft changes along with the change of the rotation angle of the gear (component), the output voltage of the potentiometer 1 and the change of the rotation angle of the gear (component) are in a linear relation, and the output voltage of the potentiometer 1 and the change of the rotation angle of the rotation shaft can be obtained through conversion of the transmission ratio and also in a linear relation. The controller 6 is connected with the potentiometer 1, and the controller 6 can acquire the voltage reflecting the left and right deflection angle (also the rotation angle of the rotating shaft) of the central control screen from the potentiometer 1.
In addition, the potentiometer shaft of the potentiometer 1 can be fixed on the rotating shaft according to the actual structural design and rotate along with the rotating shaft, and the potentiometer shaft of the potentiometer 1 can also be fixed on the motor output shaft according to the actual structural design and rotate along with the motor output shaft.
The left limit switch 8 is arranged on the bracket body 5 corresponding to the left limit position of the rotating shaft, and the right limit structure 52 is arranged on the bracket body 5 corresponding to the right limit position of the rotating shaft. The position of the left limit switch corresponding to the mechanical 0 degree position (namely the left limit position) of the rotating shaft, the voltage of the potentiometer is the reference voltage, and the position of the right limit structure is the mechanical of the rotating shaft
The angular position (i.e. the right extreme position), where the voltage of the potentiometer is the end voltage. The middle position between the left limit position and the right limit position is the middle position of the central control screen. The left limit switch 8 is used for detecting whether the rotating shaft 4 rotates to a left limit position, the left limit switch 8 is electrically connected with the controller 6, a detected signal of whether the rotating shaft 4 rotates to the left limit position is sent to the controller 6, if the rotating shaft 4 rotates to the left limit position, the middle control screen support 3 can touch the left limit switch 8, the left limit switch 8 can be closed, and a pin connected with the left limit switch 8 by the controller 6 can detect a high-level signal.
The preset maximum rotatable angle of the rotating shaft in the embodiment
The maximum deflectable angle of the center screen is 33 degrees, namely the maximum left deflection angle of the center screen is 16.5 degrees, and the maximum right deflection angle of the center screen is 16.5 degrees. After receiving the calibration request, the controller 6 controls the motor 7 to rotate, and the deflection accuracy calibration is carried out by combining the potentiometer 1. The calibration request is sent to the controller 6 by a central control screen system, a calibration button (soft switch) is integrated on the central control screen, and the user clicks the calibration buttonThe calibration button may send a calibration request to the controller 6. In addition, the calibration request may be issued by other means, such as voice, gestures, etc.
As shown in fig. 4, in the deflection accuracy calibration method of the vehicle-mounted central control panel, the controller 6 performs the following steps:
s11, the motor 7 is controlled to rotate positively to drive the rotary shaft 4 to rotate left through the transmission mechanism, and then S12 is executed.
S12, judging whether the left limit switch 8 is in a closed state, if so, executing S13, otherwise, returning to executing S11.
S13, controlling the motor 7 to stop rotating, delaying for 3S (the preset time in the embodiment is 3S), recording the voltage of the potentiometer at the moment, and taking the voltage as a reference voltage U 0 Then S14 is performed.
S14, combining a preset angle coefficient k 0 Forming a voltage-angle relation:
this voltage-angle relation is stored as a motor control parameter, and then S15 is executed.
S15, controlling the motor 7 to rotate reversely according to the stored voltage-angle relation to drive the rotary shaft 4 to rotate right by 16.5 degrees through the transmission mechanism, centering the central control screen (neither left deflection nor right deflection), and ending.
Example 2: the structure of the deflection accuracy calibration system of the vehicle-mounted central control screen in this embodiment is the same as that of embodiment 1, and the controller 6 controls the motor 7 to rotate after receiving the calibration request, and performs deflection accuracy calibration in combination with the potentiometer 1. The difference is that: in the deflection accuracy calibration method of the in-vehicle center control panel, the controller 6 performs the following steps (see fig. 5):
s21, the motor 7 is controlled to rotate positively to drive the rotary shaft 4 to rotate left through the transmission mechanism, and then S22 is executed.
S22, judging whether the left limit switch 8 is in a closed state, if so, executing S23, otherwise, returning to executing S21.
S23, controlling the motor 7 to stop rotating, recording the voltage of the potentiometer at the moment after 3 seconds of time delay, and taking the voltage as a referenceVoltage U 0 Store, then execute S24.
S24, the motor 7 is controlled to rotate reversely to drive the rotating shaft 4 to rotate right through the transmission mechanism, and then S25 is executed.
S25, judging whether the motor working current reaches the locked-rotor current and lasts for 3S, if so, executing S26, otherwise, returning to executing S24.
S26, controlling the motor 7 to stop rotating, recording the voltage of the potentiometer at the moment, and taking the voltage as a termination voltage U end Store, then execute S27.
S27, utilizing a formula:
the angle coefficient k is calculated, and then S28 is performed.
S28, forming a voltage-angle relation:
this voltage-angle relation is stored as a motor control parameter, and then S29 is executed.
And S29, controlling the motor 7 to rotate forward according to the stored voltage-angle relation to drive the rotary shaft 4 to rotate left by 16.5 degrees through the transmission mechanism, centering the central control screen, and ending.
Example 3: as shown in fig. 6 and 7, most of the structures of the deflection accuracy calibration system of the in-vehicle center control panel in this embodiment are the same as those in embodiment 1, except that: the left limit position corresponding to the rotating shaft on the support body 5 is provided with a left limit structure 51, the right limit position corresponding to the rotating shaft on the support body 5 is provided with a right limit switch 9, the right limit switch 9 is used for detecting whether the rotating shaft 4 rotates to the right limit position, the right limit switch 9 is electrically connected with the controller 6, a detected signal of whether the rotating shaft 4 rotates to the right limit position is sent to the controller 6, if the rotating shaft 4 rotates to the right limit position, the right limit switch 9 can be touched by the middle control screen support 3, the right limit switch 9 can be closed, and a pin connected with the right limit switch 9 of the controller 6 can detect a high-level signal. The position of the right limit switch corresponding to the mechanical 0 degree position (namely the right limit position) of the rotating shaft, the voltage of the potentiometer is the reference voltage, and the left limit structure isMachinery of rotating shaft
The angular position (i.e. the left extreme position), where the voltage of the potentiometer is the end voltage. The middle position between the left limit position and the right limit position is the middle position of the central control screen.
After receiving the calibration request, the controller 6 controls the motor 7 to rotate, and the deflection accuracy calibration is carried out by combining the potentiometer 1. The calibration request is issued in the same manner as in example 1. The difference is that: in the deflection accuracy calibration method of the in-vehicle center control panel, the controller 6 performs the following steps (see fig. 8):
s31, the motor 7 is controlled to rotate reversely to drive the rotation shaft 4 to rotate right through the transmission mechanism, and then S32 is executed.
S32, judging whether the right limit switch 9 is in a closed state, if so, executing S33, otherwise, returning to executing S31.
S33, controlling the motor 7 to stop rotating, recording the voltage of the potentiometer at the moment after 3 seconds of time delay, and taking the voltage as a reference voltage U 0 Then S34 is performed.
S34, combining a preset angle coefficient k 0 Forming a voltage-angle relation:
this voltage-angle relation is stored as a motor control parameter, and then S35 is performed.
And S35, controlling the motor 7 to rotate forward according to the stored voltage-angle relation to drive the rotary shaft 4 to rotate left by 16.5 degrees through the transmission mechanism, centering the central control screen (neither left deflection nor right deflection), and ending.
Example 4: the structure of the deflection accuracy calibration system of the vehicle-mounted central control screen in this embodiment is the same as that of embodiment 3, and the controller 6 controls the motor 7 to rotate after receiving the calibration request, and performs deflection accuracy calibration in combination with the potentiometer 1. The difference is that: in the deflection accuracy calibration method of the in-vehicle center control panel, the controller 6 performs the following steps (see fig. 9):
s41, the motor 7 is controlled to rotate reversely to drive the rotation shaft 4 to rotate right through the transmission mechanism, and then S42 is executed.
S42, judging whether the right limit switch 9 is in a closed state, if so, executing S43, otherwise, returning to executing S41.
S43, controlling the motor 7 to stop rotating, recording the voltage of the potentiometer at the moment after 3S of time delay, and taking the voltage as a reference voltage U 0 Store, then execute S44.
S44, the motor 7 is controlled to rotate positively to drive the rotary shaft 4 to rotate left through the transmission mechanism, and then S45 is executed.
S45, judging whether the motor working current reaches the locked-rotor current and lasts for 3S, if so, executing S46, otherwise, returning to executing S44.
S46, controlling the motor 7 to stop rotating, recording the voltage of the potentiometer at the moment, and taking the voltage as a termination voltage U end Store, then execute S47.
S47, utilizing the formula:
the angle coefficient k is calculated, and then S48 is performed.
S48, forming a voltage-angle relation:
the voltage-angle relation is stored as the motor control parameter and then S49 is performed.
And S49, controlling the motor 7 to rotate reversely according to the stored voltage-angle relation to drive the rotary shaft 4 to rotate right by 16.5 degrees through the transmission mechanism, centering the central control screen, and ending.
Example 5: as shown in fig. 10 and 11, most of the structures of the deflection accuracy calibration system of the in-vehicle center control panel in this embodiment are the same as those of embodiment 1, except that: the right limit switch 9 is installed corresponding to the right limit position of the rotating shaft on the support body 5, the right limit switch 9 is used for detecting whether the rotating shaft 4 rotates to the right limit position, the right limit switch 9 is electrically connected with the controller 6, a detected signal of whether the rotating shaft 4 rotates to the right limit position is sent to the controller 6, if the rotating shaft 4 rotates to the right limit position, the right limit switch 9 can be touched by the middle control screen support 3, the right limit switch 9 can be closed, and a high-level signal can be detected by a pin connected with the right limit switch 9 through the controller 6.
After receiving the calibration request, the controller 6 controls the motor 7 to rotate, and the deflection accuracy calibration is carried out by combining the potentiometer 1. The calibration request is issued in the same manner as in example 1. The difference is that: in the deflection accuracy calibration method of the in-vehicle center control panel, the controller 6 performs the following steps (see fig. 12):
s51, the motor 7 is controlled to rotate forward to drive the rotation shaft 4 to rotate left by the transmission mechanism, and then S52 is executed.
S52, judging whether the left limit switch 8 is in a closed state, if so, executing S53, otherwise, returning to executing S51.
S53, controlling the motor 7 to stop rotating, recording the voltage of the potentiometer at the moment after 3 seconds of time delay, and taking the voltage as a reference voltage U 0 Store, then execute S54.
S54, the motor 7 is controlled to rotate reversely to drive the rotation shaft 4 to rotate right through the transmission mechanism, and then S55 is executed.
S55, judging whether the right limit switch 9 is in a closed state, if so, executing S56, otherwise, returning to executing S54.
S56, controlling the motor 7 to stop rotating, recording the voltage of the potentiometer at the moment after 3S of time delay, and taking the voltage as a termination voltage U end Store, then execute S57.
S57, utilizing a formula:
the angle coefficient k is calculated, and then S58 is performed.
S58, forming a voltage-angle relation:
the voltage-angle relation is stored as the motor control parameter and then S59 is executed.
And S59, controlling the motor 7 to rotate forward according to the stored voltage-angle relation to drive the rotary shaft 4 to rotate left by 16.5 degrees through the transmission mechanism, centering the central control screen, and ending.
Example 6: as shown in fig. 13 and 14, most of the configuration of the deflection accuracy calibration system of the in-vehicle center control panel in this embodiment is the same as that of embodiment 1, except that: a left limit structure 51 is arranged on the bracket body 5 corresponding to the left limit position of the rotating shaft, and a right limit structure 52 is arranged on the bracket body 5 corresponding to the right limit position of the rotating shaft.
After receiving the calibration request, the controller 6 controls the motor 7 to rotate, and the deflection accuracy calibration is carried out by combining the potentiometer 1. The calibration request is issued in the same manner as in example 1. The difference is that: in the deflection accuracy calibration method of the in-vehicle center control panel, the controller 6 performs the following steps (see fig. 15):
s61, the motor 7 is controlled to rotate forward to drive the rotation shaft 4 to rotate left by the transmission mechanism, and then S62 is executed.
S62, judging whether the motor working current reaches the locked-rotor current and lasts for 3S, if so, executing S63, otherwise, returning to executing S61.
S63, controlling the motor 7 to stop rotating, recording the voltage of the potentiometer at the moment, and taking the voltage as a reference voltage U 0 Store, then execute S64.
S64, the motor 7 is controlled to rotate reversely to drive the rotation shaft 4 to rotate right through the transmission mechanism, and then S65 is executed.
S65, judging whether the motor working current reaches the locked-rotor current and lasts for 3S, if so, executing S66, otherwise, returning to executing S64.
S66, controlling the motor 7 to stop rotating, recording the voltage of the potentiometer at the moment, and taking the voltage as a termination voltage U end Store, then execute S67.
S67, utilizing the formula:
the angle coefficient k is calculated, and then S68 is performed.
S68, forming a voltage-angle relation:
the voltage-angle relation is stored as the motor control parameter and then S69 is performed.
And S69, controlling the motor 7 to rotate forward according to the stored voltage-angle relation to drive the rotary shaft 4 to rotate left by 16.5 degrees through the transmission mechanism, centering the central control screen, and ending.
Claims (10)
1. The deflection accuracy calibration system of the vehicle-mounted central control screen is characterized in that:
the device comprises a controller (6), a central control screen support (3), a rotating shaft (4), a bracket body (5), a transmission mechanism, an angle detection module electrically connected with the controller (6) and a motor (7) which has a current detection function and can drive the central control screen to deflect;
the transmission mechanism and the motor (7) are arranged in the bracket body, the rotating shaft (4) is vertically assembled on the bracket body, the top end of the rotating shaft is fixedly connected with the central control screen support (3), and the motor drives the rotating shaft to rotate left and right through the transmission mechanism so as to drive the central control screen to deflect left and right through the central control screen support; a left limit structure (51) is arranged at the left limit position of the bracket body (5) corresponding to the rotating shaft or a left limit switch (8) is arranged at the right limit position of the bracket body (5) corresponding to the rotating shaft, a right limit structure (52) is arranged at the right limit position of the bracket body (5) or a right limit switch (9) is arranged at the right limit position of the bracket body, and the left limit switch (8) and the right limit switch (9) are electrically connected with the controller (6);
the controller (6) receives the calibration request and then controls the motor (7) to rotate so as to deflect the central control screen to a side limit position, and the deflection accuracy calibration of the central control screen is carried out by updating the reference voltage in combination with the angle detection module; or the central control screen is deflected to one side limit position and then deflected to the other side limit position, and the deflection accuracy calibration of the central control screen is carried out by updating the reference voltage and the angle coefficient in combination with the angle detection module.
2. The deflection accuracy calibration system of an on-board center control screen according to claim 1, wherein: the angle detection module adopts a potentiometer (1), and the controller (6) recognizes the left and right deflection angles of the central control screen by acquiring the voltage of the potentiometer (1).
3. The deflection accuracy calibration system of an on-board center control screen according to claim 2, wherein: the resistor body of the potentiometer (1) is electrically connected with the controller (6), and the potentiometer shaft of the potentiometer (1) is fixed on the transmission mechanism and rotates along with the transmission mechanism, or the potentiometer shaft of the potentiometer (1) is fixed on the rotating shaft (4) and rotates along with the rotating shaft (4), or the potentiometer shaft of the potentiometer (1) is fixed on the motor output shaft and rotates along with the motor output shaft.
4. The deflection accuracy calibration system of an on-board center control screen according to claim 2, wherein: under the condition that a left limit switch (8) and a right limit structure (52) are arranged on a support body (5), a controller (6) receives a calibration request and then controls a motor (7) to rotate, and a potentiometer (1) is combined, so that the deflection accuracy calibration method of the central control screen is carried out in a mode of updating a reference voltage, and the method comprises the following steps:
when the control motor (7) rotates positively to drive the rotary shaft (4) to rotate left through the transmission mechanism and the left limit switch (8) is detected to be closed due to the touch of the central control screen support (3), the control motor (7) stops rotating, the voltage of the potentiometer at the moment is recorded after the delay is preset, and the voltage is used as a reference voltage U 0 Combining with a preset angle coefficient k 0 Forming a voltage-angle relation:
storing the voltage-angle relation as a motor control parameter to finish calibration; wherein (1)>
The real-time rotation angle of the rotating shaft is represented, and U represents the real-time voltage of the potentiometer.
5. The deflection accuracy calibration system of an on-board center control screen according to claim 2, wherein: under the condition that a left limit switch (8) is arranged on a support body (5) and a right limit structure (52) is arranged, a controller (6) receives a calibration request and then controls a motor (7) to rotate, and a potentiometer (1) is combined, so that the deflection accuracy calibration method of the central control screen is carried out in a mode of updating reference voltage and angle coefficients, and comprises the following steps:
firstly, a control motor (7) rotates positively to drive a rotary shaft (4) to rotate left through a transmission mechanism, when a left limit switch (8) is detected to be closed due to the touch of a central control screen support (3), the control motor (7) stops rotating, the voltage of a potentiometer at the moment is recorded after a preset time delay, and the voltage is taken as a reference voltage U 0 Storing;
secondly, the motor (7) is controlled to rotate reversely so as to drive the rotating shaft (4) to rotate rightwards through the transmission mechanism, when the motor working current is detected to reach the locked-rotor current due to the fact that the middle control screen support (3) is abutted to the right limiting structure (52) and lasts for a preset time, the motor (7) is controlled to stop rotating, the voltage of the potentiometer at the moment is recorded, and the voltage is used as a termination voltage U end Storing;
then, the formula is used:
calculating an angle coefficient k; wherein (1)>
Representing a preset maximum rotatable angle of the rotating shaft;
finally, a voltage-angle relationship is formed:
storing the voltage-angle relation as a motor control parameter to finish calibration; wherein (1)>
The real-time rotation angle of the rotating shaft is represented, and U represents the real-time voltage of the potentiometer.
6. The deflection accuracy calibration system of an on-board center control screen according to claim 2, wherein: under the condition that a left limit structure (51) is arranged on the support body (5) and a right limit switch (9) is arranged, the controller (6) controls the motor (7) to rotate after receiving a calibration request, and the method for calibrating deflection accuracy of the central control screen by updating the reference voltage is as follows:
the motor (7) is controlled to rotate reversely to drive the rotary shaft (4) to rotate right through the transmission mechanism, when the right limit switch (9) is detected to be closed due to the touch of the middle control screen support (3), the motor (7) is controlled to stop rotating, the voltage of the potentiometer at the moment is recorded after the preset time is delayed, and the voltage is used as the reference voltage U 0 Combining with a preset angle coefficient k 0 Forming a voltage-angle relation:
storing the voltage-angle relation as a motor control parameter to finish calibration; wherein (1)>
The real-time rotation angle of the rotating shaft is represented, and U represents the real-time voltage of the potentiometer.
7. The deflection accuracy calibration system of an on-board center control screen according to claim 2, wherein: under the condition that a left limit structure (51) is arranged on the support body (5) and a right limit switch (9) is arranged, the controller (6) controls the motor (7) to rotate after receiving a calibration request, and the method for calibrating the deflection accuracy of the central control screen by updating the reference voltage and the angle coefficient is as follows:
firstly, a motor (7) is controlled to rotate reversely to drive a rotary shaft (4) to rotate rightwards through a transmission mechanism, when a right limit switch (9) is detected to be closed due to the touch of a middle control screen support (3), the motor (7) is controlled to stop rotating, the voltage of a potentiometer at the moment is recorded after a preset time is delayed, and the voltage is taken as a reference voltage U 0 Storing;
secondly, controlling the motor (7) to rotate forward so as to drive the rotary shaft (4) to rotate left through the transmission mechanism, when detecting that the motor working current reaches the locked-rotor current and lasts for a preset time because the central control screen support (3) is abutted against the left limit structure (51), controlling the motor (7) to stop rotating, recording the voltage of the potentiometer at the moment and controlling the potentiometer to rotateVoltage as termination voltage U end Storing;
then, the formula is used:
calculating an angle coefficient k; wherein (1)>
Representing a preset maximum rotatable angle of the rotating shaft;
finally, a voltage-angle relationship is formed:
storing the voltage-angle relation as a motor control parameter to finish calibration; wherein (1)>
The real-time rotation angle of the rotating shaft is represented, and U represents the real-time voltage of the potentiometer.
8. The deflection accuracy calibration system of an on-board center control screen according to claim 2, wherein: under the condition that a left limit switch (8) and a right limit switch (9) are arranged on the support body (5), the controller (6) controls the motor (7) to rotate after receiving a calibration request, and the method for calibrating deflection accuracy of the central control screen by updating the reference voltage and the angle coefficient is as follows:
firstly, a control motor (7) rotates positively to drive a rotary shaft (4) to rotate left through a transmission mechanism, when a left limit switch (8) is detected to be closed due to the touch of a central control screen support (3), the control motor (7) stops rotating, the voltage of a potentiometer at the moment is recorded after a preset time delay, and the voltage is taken as a reference voltage U 0 Storing;
secondly, the motor (7) is controlled to rotate reversely so as to drive the rotary shaft (4) to rotate rightwards through the transmission mechanism, when the right limit switch (9) is detected to be closed due to the touch of the middle control screen support (3), the motor (7) is controlled to stop rotating, the voltage of the potentiometer at the moment is recorded after the preset time is delayed, andtaking the voltage as a termination voltage U end Storing;
then, the formula is used:
calculating an angle coefficient k; wherein (1)>
Representing a preset maximum rotatable angle of the rotating shaft;
finally, a voltage-angle relationship is formed:
storing the voltage-angle relation as a motor control parameter to finish calibration; wherein (1)>
The real-time rotation angle of the rotating shaft is represented, and U represents the real-time voltage of the potentiometer.
9. The deflection accuracy calibration system of an on-board center control screen according to claim 2, wherein: under the condition that a left limit structure (51) and a right limit structure (52) are arranged on the support body (5), the controller (6) controls the motor (7) to rotate after receiving a calibration request, and the method for calibrating deflection accuracy of the central control screen by updating the reference voltage and the angle coefficient is as follows:
firstly, controlling a motor (7) to rotate positively to drive a rotary shaft (4) to rotate left through a transmission mechanism, when detecting that the motor working current reaches the blocking current due to the fact that a central control screen support (3) is abutted against a left limiting structure (51) and lasts for a preset time, controlling the motor (7) to stop rotating, recording the voltage of a potentiometer at the moment, and taking the voltage as a reference voltage U 0 Storing;
secondly, the motor (7) is controlled to rotate reversely so as to drive the rotating shaft (4) to rotate right through the transmission mechanism, and when the motor working current is detected to reach the locked-rotor current and last for the preset time because the middle control screen support (3) is abutted to the right limiting structure (52)The motor (7) is controlled to stop rotating, the voltage of the potentiometer at the moment is recorded, and the voltage is taken as a termination voltage U end Storing;
then, the formula is used:
calculating an angle coefficient k; wherein (1)>
Representing a preset maximum rotatable angle of the rotating shaft;
finally, a voltage-angle relationship is formed:
storing the voltage-angle relation as a motor control parameter to finish calibration; wherein (1)>
The real-time rotation angle of the rotating shaft is represented, and U represents the real-time voltage of the potentiometer.
10. The deflection accuracy calibration system of an in-vehicle center control screen according to any one of claims 1 to 9, wherein: after calibration is completed, the controller (6) controls the motor (7) to rotate so as to center the central control screen.
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| JP2003057743A (en) * | 2001-08-10 | 2003-02-26 | Matsushita Electric Ind Co Ltd | Method and system for correcting projection angle |
| CN202372305U (en) * | 2011-12-13 | 2012-08-08 | 广州信邦汽车装备制造有限公司 | Angle calibration instrument with multiple torque digital display |
| CN110386135B (en) * | 2018-04-16 | 2021-03-26 | 比亚迪股份有限公司 | Automatic parking control device, system, vehicle and method |
| CN110243580A (en) * | 2019-06-04 | 2019-09-17 | Oppo广东移动通信有限公司 | Detection method, device, electronic equipment and the storage medium of electronic equipment |
| CN111439300B (en) * | 2020-04-09 | 2021-04-02 | 福建盛海智能科技有限公司 | Automatic centering method and system for steer-by-wire |
| CN114093280B (en) * | 2021-11-22 | 2024-01-09 | 马努（上海）艺术设计有限公司 | Angle correction method, angle limiter, display unit and display system |
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Address after: 211200 floor 5, block a, Kechuang building, Huizhi Industrial Park, Lishui District, Nanjing, Jiangsu Province Patentee after: Shenzhen Blue Automobile Nanjing Research Institute Co.,Ltd. Country or region after: China Address before: 211200 floor 5, block a, Kechuang building, Huizhi Industrial Park, Lishui District, Nanjing, Jiangsu Province Patentee before: Chang'an new energy Nanjing Research Institute Co.,Ltd. Country or region before: China |