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CN-114162016-B - System and apparatus for generating vibrations of a vehicle seat synchronized with music

CN114162016BCN 114162016 BCN114162016 BCN 114162016BCN-114162016-B

Abstract

A system and apparatus for generating vibrations of a vehicle seat in synchronization with music output from an audio device, the system and apparatus using an electric motor included in the seat to adjust the seat in forward and backward directions and upward and downward directions, the system including an electric motor multi-control circuit configured to receive a signal of a seat position adjustment switch and a signal of an audio switch, generate a driving current required to vibrate the seat, and output the driving current to the electric motor. The electric motor receives signals from the electric motor multi-control circuit and generates motor torque while being driven, and the generated motor torque is transmitted to the seat to generate target vibrations in the seat.

Inventors

  • ZHANG QIONGZHEN

Assignees

  • 现代自动车株式会社
  • 起亚自动车株式会社

Dates

Publication Date
20260505
Application Date
20210209
Priority Date
20200910

Claims (12)

  1. 1. A system for generating vibrations of a seat of a vehicle synchronized with music output from an audio device, the system using an electric motor provided in the seat to adjust the seat in forward and backward directions and upward and downward directions, the system comprising: An electric motor multi-control circuit configured to: Receiving a signal of a seat position adjustment switch and a signal of an audio switch, Generating a driving current required to vibrate the seat, and Outputting the drive current to the electric motor, Wherein the electric motor receives the drive current from the electric motor multi-control circuit and generates motor torque while being driven, and Wherein the generated motor torque is transmitted to the seat to generate a target vibration in the seat; wherein the electric motor multi-control circuit comprises a signal processor configured to Receiving the signal of the seat position adjustment switch and the signal of the audio switch to generate a first target signal for controlling the position of the seat and a second target signal for generating vibration of the seat respectively, Synthesizing the first target signal and the second target signal into one target signal, Generating a target current required to vibrate the seat; Wherein the signal processor includes a second processor for generating the second target signal of the vibration of the seat, the second processor being configured to input a music signal of a vehicle, set an appropriate mode according to a characteristic of music, detect the characteristic of the music by performing fast fourier transform analysis on an initial portion of the music signal in real time in case of automatic mode setting, and then automatically select the appropriate mode, perform frequency mapping for different music modes according to the selected mode, reject or emphasize a specific frequency band again from the frequency mapped signal through a filter for the music of each mode, generate strong and weak portions of a beat through a process of adding an envelope of a signal transmitted through the filter again in a time band, and generate a vibration signal synchronized with the music.
  2. 2. The system of claim 1, wherein the motor torque generated by the electric motor is transferred to a seat track via a cross rail configured to connect the electric motor with the seat track and then to the seat disposed on the seat track.
  3. 3. The system according to claim 1, wherein the vibrations are generated from the seat by adding beats for generating vibrations in a specific frequency band synchronized with the music output from the audio device of the vehicle.
  4. 4. The system of claim 1, wherein the seat is configured to rotate when the seat vibrates due to the motor torque output from the electric motor.
  5. 5. The system of claim 1, wherein the electric motor multi-control circuit comprises: a proportional and integral controller configured to perform proportional and integral control using the target current generated by the signal processor and a feedback current fed back from the electric motor; a pulse width modulation controller configured to calculate a pulse width modulation control signal using the signals transmitted through the proportional and integral controllers; an electric motor driver configured to output the driving current for driving the electric motor according to the pulse width modulation control signal, and A motor control circuit power controller configured to supply power required for operation of the proportional and integral controller.
  6. 6. The system of claim 5, wherein the signal processor comprises: a first signal processor for controlling the first target signal for the position of the seat, the first signal processor configured to: Receiving the signal of the seat position adjustment switch, Extracting DC component, and Generating the first target signal for controlling the position of the seat; a second signal processor for generating the second target signal of vibration of the seat, the second signal processor configured to: the signal of the audio switch is received, Extracting alternating current components, and Generating the second target signal for generating vibration of the seat, and A target signal synthesizer configured to: synthesizing the first target signal for controlling the position of the seat and the second target signal for generating vibration of the seat into the one target signal, Generating the target current required to vibrate the seat, and The target current is output to the proportional and integral controller.
  7. 7. The system of claim 6, wherein when the signal of the seat position adjustment switch and the signal of the audio switch are simultaneously input to the signal processor, the first signal processor extracts and uses the direct current components of the signal of the seat position adjustment switch and the signal of the audio switch, and the second signal processor extracts and uses the alternating current components of the signal of the seat position adjustment switch and the signal of the audio switch, such that the first signal processor and the second signal processor independently process both signals to independently perform functions of seat position adjustment and vibration generation.
  8. 8. The system of claim 6, wherein the second signal processor comprises: an input unit configured to receive the music output from the audio device of the vehicle; a mode setting unit configured to automatically or manually select and set a mode for applying signal processing parameters to apply the signal processing parameters suitable for the type of music received; A frequency mapping unit configured to map high-frequency music to a low-frequency vibration signal perceptible by a user according to the type of music selected by the mode setting unit; a frequency filter unit configured to perform filtering to exclude, reduce, or increase a signal under a specific frequency band from the mapped low-frequency vibration signal; An envelope application unit configured to convert an envelope of the signal transmitted through the frequency filter unit in a time range according to the selected type of music to generate strong and weak parts of the beat, and An output unit configured to generate a vibration signal associated with music transmitted through the envelope application unit and output the generated vibration signal to the target signal synthesizer.
  9. 9. The system of claim 8, wherein the type of music input to the input unit includes dance music, ballad and classical music, and Wherein when the mode setting unit automatically sets the mode, the characteristics of the music are detected by performing fast fourier transform analysis on an initial portion of a music signal in real time, and then any one type of music among the dance music, the ballad, and the classical music is automatically selected.
  10. 10. The system of claim 8, wherein the type of music input to the input unit includes dance music, ballad and classical music, and Wherein when the mode setting unit manually sets the mode, the user can manually select any one type of music among the dance music, the ballad, and the classical music.
  11. 11. The system according to claim 5, wherein the proportional and integral controller is a circuit configured to receive a result obtained by subtracting a feedback current value received by the electric motor from a target current value generated by the signal processor to perform proportional and integral control and output a current.
  12. 12. An apparatus for generating vibrations of a seat of a vehicle synchronized with music, the apparatus comprising: An electric motor provided in the seat to adjust the seat connected to a seat rail in forward and backward directions and upward and downward directions; a track rail configured to connect the electric motor with the seat track, and An electric motor multi-control circuit connected to an audio device of the vehicle, the audio device configured to output the music over a communication line, the electric motor multi-control circuit configured to: An audio signal is received and the audio signal is received, Generating a driving current required to vibrate the seat, and Outputting the drive current to the electric motor, Wherein a motor torque of the electric motor is transmitted to the seat for simultaneously generating vibration and rotation, and Wherein vibrations are generated from the seat by adding beats for generating vibrations in a specific frequency band synchronized with the music output from the audio device; wherein the electric motor multi-control circuit comprises a signal processor configured to Receiving a signal of a seat position adjustment switch and a signal of an audio switch to generate a first target signal for controlling a position of the seat and a second target signal for generating vibration of the seat respectively, Synthesizing the first target signal and the second target signal into one target signal, Generating a target current required to vibrate the seat; wherein the signal processor includes a second processor for generating the second target signal of the vibration of the seat, the second processor being configured to input a music signal of a vehicle, set a mode according to a characteristic of music, detect the characteristic of the music by performing fast fourier transform analysis on an initial portion of the music signal in real time in case of automatic mode setting, and then automatically select an appropriate mode, perform frequency mapping for different music types according to the selected mode, exclude or emphasize a specific frequency band again from the frequency mapped signal through a filter for each type of music, generate strong and weak portions of a beat through a process of adding an envelope of the signal transmitted through the filter again in a time band, thereby generating a vibration signal synchronized with the music.

Description

System and apparatus for generating vibrations of a vehicle seat synchronized with music Technical Field The present disclosure relates to a system and apparatus for generating vibration of a vehicle seat synchronized with music, and more particularly, to a system and apparatus for generating vibration of a vehicle seat synchronized with music to actively generate vibration synchronized with music output from an audio device in a vehicle seat, which uses an electric motor included in the seat to adjust the seat in forward and backward directions as well as upward and downward directions. Background There is a technique for forcibly vibrating a seat of a vehicle as needed so as to draw attention of an occupant in the vehicle or to prevent fatigue driving. Conventionally, in order to generate desired vibrations in a seat of a vehicle, a separate actuator for generating vibrations of the seat is used. That is, an electro-dynamic actuator, a pneumatic actuator, or the like is installed inside a seat cushion or a seat frame to generate a desired vibration in a seat of a vehicle according to an environment. However, a separate actuator is used to generate vibrations of the seat, and thus the weight and cost of the vehicle are increased. In the case of a vibrating seat, a motor that needs to adjust the seat in forward and backward directions and upward and downward directions is installed in the seat, and thus, when a separate actuator is additionally installed in the seat in order to generate vibration of the seat, the weight and cost of the vehicle greatly increase. It should be understood that the above matters described in the prior art are merely to facilitate understanding of the background of the present disclosure and should not be considered as prior art well known to those skilled in the art. Disclosure of Invention The present disclosure has been made in view of the above problems, and an object of the present disclosure is to provide a system and apparatus for generating vibrations of a vehicle seat synchronized with music, for adjusting the seat in forward and backward directions and upward and downward directions using an electric motor included in the seat to generate vibrations in the seat, and for actively generating vibrations in the vehicle seat synchronized with music output from an audio device included in the vehicle, thereby avoiding the need for a separate actuator to vibrate the seat, thereby preventing increased weight and cost, and for advantageously feeling vivid, pleasant, and safe to an occupant since vibrations are supplied to the seat in synchronization with music signals. In accordance with one aspect of the present disclosure, the above and other objects can be accomplished by the provision of a system for generating vibrations of a vehicle seat in synchronization with music output from an audio device, the system using an electric motor provided in the seat to adjust the seat in forward and backward directions and upward and downward directions, the system including an electric motor multi-control circuit configured to receive a signal of a seat position adjusting switch and a signal of an audio switch to generate a driving current required to vibrate the seat and then output the driving current to the electric motor, wherein the electric motor receives the signal from the electric motor multi-control circuit and generates a motor torque while being driven, the generated motor torque being transmitted to the seat to generate a target vibration within the seat. The motor torque generated by the electric motor may be transferred to the seat track through a track rail for connecting the electric motor to the seat track and may then be transferred to a seat coupled to the seat track. The vibration generated from the seat may be a vibration formed by adding beats for generating vibration in a specific frequency band synchronized with music output from an audio device of the vehicle. When the seat vibrates due to motor torque output from the electric motor, the seat may rotate together. The electric motor multi-control circuit may include a signal processor configured to receive a signal of a seat position adjustment switch and a signal of an audio switch to generate a target signal for controlling a position of a seat and a target signal for generating vibration of the seat, respectively, to synthesize the target signal for controlling the position of the seat and the target signal for generating vibration of the seat into one target signal and then generate a target current required to vibrate the seat, a Proportional and Integral (PI) controller configured to perform PI control using the target current generated by the signal processor and a feedback current fed back from the motor, a Pulse Width Modulation (PWM) controller configured to calculate a PWM control signal using a signal transmitted through the PI controller, an electric motor driver configured to output a driving curren