Automobile seat headrest audio

Abstract

This invention provides a car seat headrest speaker, including a microcontroller, a digital signal processor, a power amplifier chip, and two pins. The power amplifier chip is connected to a speaker and the digital signal processor; the digital signal processor is connected to the microcontroller; and the microcontroller has a Bluetooth transceiver. The speaker is detachably connected to the car seat headrest. The two pins connect to the vehicle's infotainment system, through which the microcontroller receives CAN protocol signals and controls the Bluetooth transceiver to enter TWS pairing mode based on the CAN protocol signals. This invention achieves multi-scenario speaker use through a detachable design and utilizes physical pins to transmit CAN bus signals to activate TWS pairing, solving the problems of existing car audio systems being non-detachable and limited in use scenarios. While ensuring driving safety, it enhances the auditory immersion and interactive experience for drivers and passengers.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a car seat headrest speaker. Background Technology

[0002] With the development of intelligent automotive cockpits, users have higher demands for interactive experiences. Traditional car audio systems are usually concentrated on the dashboard and door panels, making them susceptible to interference from external noise and vibrations. This results in uneven sound distribution within the vehicle, particularly for rear passengers, leading to a less than ideal listening experience. Furthermore, car audio systems are limited to in-car use, cannot be disassembled or repositioned, limiting their application scenarios. Therefore, providing a more immersive listening experience while maintaining a comfortable seating position and safe driving, and ensuring easy disassembly, installation, and repositioning for multi-scenario use, has become a key technical challenge. Utility Model Content

[0003] This utility model provides a car seat headrest speaker to solve the problem that existing technologies cannot provide a more immersive listening experience while maintaining a comfortable seating posture and safe driving state. In addition, the speaker is easy to disassemble and adjust its position to achieve multi-scenario use.

[0004] This utility model provides a car seat headrest speaker, including: a microcontroller, a digital signal processor, a power amplifier chip, a TWS Bluetooth chip, and a CAN interface;

[0005] The power amplifier chip's output is connected to the speaker, and its input is connected to the digital signal processor. The digital signal processor is also connected to the microcontroller. The microcontroller is also connected to the TWS Bluetooth chip. The TWS Bluetooth chip is connected to the vehicle's infotainment system via a CAN interface.

[0006] Optionally, there are two power amplifier chips and two speakers, corresponding to the left channel speaker and the right channel speaker respectively.

[0007] Optionally, the left and right channel speakers can be detachably connected to the car seat headrests.

[0008] Optional features include magnetic attraction devices and sliding latch devices.

[0009] Optionally, it also includes two pins, through which the vehicle-mounted unit transmits signals and provides power to the car seat headrest audio system.

[0010] Optionally, the headrest speaker uses a full-range speaker module.

[0011] Optionally, the left channel speaker and the right channel speaker are combined to form a 2.0 channel system.

[0012] Optionally, it also includes a subwoofer, and the left channel speaker, the right channel speaker and the subwoofer are combined to form a 2.1 channel system.

[0013] Optionally, a USB interface is also included.

[0014] Optionally, the car seat headrest is made of memory foam.

[0015] As can be seen from the above technical solution, this utility model provides a car seat headrest speaker, which includes a left channel speaker and a right channel speaker, which are detachably connected to the car seat headrest. By detachably installing speakers on both sides of the car seat headrest, a more immersive listening experience is achieved, enabling multi-scenario audio use. Simultaneously, passengers can maintain a comfortable seating posture and a safe driving state, improving driving safety and experience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a car seat headrest audio system according to an embodiment of the present invention;

[0017] Figure 2 A schematic diagram of a headrest speaker and car seat installation structure provided in an embodiment of this utility model;

[0018] Figure 3 A schematic diagram of a headrest speaker and car seat mounting structure is provided for another embodiment of this utility model;

[0019] Figure 4 A schematic diagram of a headrest speaker structure provided in an embodiment of this utility model;

[0020] Figure 5 This is a flowchart illustrating a TWS connection method according to an embodiment of the present invention. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Figure 1 A schematic diagram of the structure of an automotive seat headrest audio system according to an embodiment of the present invention is shown, as follows: Figure 1As shown, the car seat headrest audio system of this embodiment includes: a microcontroller, a digital signal processor, and a power amplifier chip; the output of the power amplifier chip is connected to the speaker, and the input of the power amplifier chip is connected to the digital signal processor; the digital signal processor is also connected to the microcontroller; the microcontroller has a Bluetooth transceiver and is connected to the vehicle's infotainment system via a CAN interface.

[0023] In this embodiment, the microcontroller selected is the Actions 2835P.

[0024] In addition, the rear of the car seat headrest speaker includes two pins for communication and power supply. The vehicle's head unit transmits signals to the car seat headrest speaker through one pin, and provides 5V power to the car seat headrest speaker through the other pin. The car seat headrest speaker can be powered by connecting the pin to the vehicle's head unit, or by using a portable charging device or battery.

[0025] Figure 2 A schematic diagram of the headrest speaker and car seat installation structure according to an embodiment of the present invention is shown, as follows: Figure 2 As shown, the car seat headrest speaker in this embodiment includes a left channel speaker 31, a right channel speaker 32, and a car seat headrest 33. The left channel speaker 31 and the right channel speaker 32 are detachably connected to the car seat headrest 33 via a magnetic attraction device or a sliding buckle device. The bottom of the left channel speaker 31 and the right channel speaker 32 includes a magnetic attraction device or a sliding buckle device. Corresponding magnetic attraction devices or sliding buckle devices are installed on both sides of the headrest 33. Through the magnetic attraction device and the sliding buckle device, the driver and passengers can more conveniently and easily remove the left channel speaker 31 and the right channel speaker 32. The strong magnetic attraction device can also make the left channel speaker 31 and the right channel speaker 32 adhere to the iron car seat headrest 33 surface. The detachable structure device can be selected according to the material of the car seat headrest 33 and the needs of the driver and passengers. The modular and easy-to-disassemble car seat headrest speaker structure provides a more direct and private sound experience while making it more convenient and portable to remove the left channel speaker 31 and the right channel speaker 32.

[0026] Figure 3 This diagram illustrates a headrest speaker and car seat mounting structure according to another embodiment of the present invention, including a left view and a right view, as shown below. Figure 3 As shown, in this embodiment, the left and right channel speakers of the car seat headrest speaker are detachably connected to the left and right sides of the seat headrest. The detachable device includes a magnetic suction device and a sliding buckle device. When the seat headrest speaker is needed, the left and right channel speakers can be installed on both sides of the headrest. When the seat headrest speaker is not needed, the left and right channel speakers can be detached and used as independent speakers.

[0027] The left and right channel speakers are detachably installed on both sides of the seat headrest, bringing music closer to the ears of the driver and passengers, reducing external noise interference, and providing a more immersive listening experience. The left and right channel speakers support near-field surround sound on top of various in-car sound effects, providing users with a 2.0 stereo surround sound effect and a lingering echo. Due to the detachable connection between the left and right channel speakers and the car seat headrests, the position of the left and right channel speakers can be adjusted according to the height, posture, and lifestyle of the driver and passengers. The vertical and horizontal distance of the left and right channel speakers can be adjusted by adjusting the magnetic position or sliding clips. While maintaining a comfortable seating position and safe driving, this provides a more immersive listening experience. For example, if the driver is 1.7 meters tall and has more sensitive hearing in their left ear, the magnetic position of the left and right channel speakers to the seat headrests can be adjusted separately as needed. The two speakers do not necessarily need to be installed symmetrically; adjustments can be made when the driver changes.

[0028] Figure 4 A schematic diagram of a headrest speaker structure according to an embodiment of the present invention is shown, including a front view and a rear view, as follows. Figure 4 As shown, the car seat headrest speakers can also be used independently as outdoor speakers. When used outdoors, thanks to the detachable connection between the left and right channel speakers and the car seat headrest, the left and right channel speakers can be removed and placed outside the vehicle to form a 2.0 channel system, creating a 2.0 stereo surround sound effect. Simultaneously, within the vehicle's effective communication range, they can be combined with a subwoofer to form a 2.1 channel system, eliminating the need for a separate Bluetooth speaker and enhancing the outdoor music listening experience. The 2.0 channel system includes two main audio channels, while the 2.1 channel system includes two main audio channels and one low-frequency channel. The left and right main audio channels can be used to play stereo sound, while the low-frequency channel is used to enhance the bass effect, thus creating a powerful low-frequency stereo sound field.

[0029] Figure 5 A flowchart illustrating a TWS connection method according to an embodiment of the present invention is shown, as follows: Figure 5 As shown, the TWS connection method of this embodiment is described below.

[0030] 510. When the driver turns on the switch to control the headrest speakers on the vehicle's infotainment system, the headrest speakers are activated based on the Controller Area Network (CAN) protocol and enter TWS Bluetooth pairing connection mode.

[0031] 520. Turn on Bluetooth on the vehicle's infotainment system and / or the terminal, and connect the vehicle's infotainment system and / or the terminal to the headrest speaker TWS Bluetooth.

[0032] 530. The vehicle infotainment system and / or terminal control the headrest speakers via TWS Bluetooth.

[0033] In a specific embodiment, the driver turns on the switch of the headrest speaker on the corresponding car seat. The headrest speaker is activated by sending a command through the CAN signal of the PIN pin, and the corresponding headrest speaker enters the TWS Bluetooth pairing connection mode. The driver and passengers turn on the Bluetooth of the vehicle's infotainment system and / or a terminal, which includes electronic devices such as mobile phones or tablets. The vehicle's infotainment system and / or the terminal connects to the headrest speaker via TWS Bluetooth. The driver and passengers control the headrest speaker through TWS Bluetooth, including changing, playing, pausing or stopping music, as well as hanging up or answering calls, thereby realizing human-computer interaction of the car seat headrest speaker.

[0034] The headrest speakers utilize directional audio technology and sound source localization technology to play audio. Employing full-range speaker modules, these speakers provide personalized calls, voice prompts, music, and navigation for drivers and passengers. Directional audio technology controls the direction of sound source propagation and the coverage area of ​​sound waves. Leveraging the directional characteristics of ultrasound, and employing unique acoustic technologies and algorithms, it ensures audio propagates along a designated path. Sound source localization technology enables real-time sound source tracking, offering strong adaptability to various indoor audio environments. Regardless of passenger position, the audio maintains excellent balance and clarity, significantly improving the handling of complex sound fields and effectively eliminating echoes, feedback, and other interference, thereby enhancing the intelligibility of audio content.

[0035] The headrest speakers use 2-inch full-range speaker modules, which can provide a wide frequency response and ensure the clarity and richness of the sound quality. With the cooperation of the left and right channels of the two headrest speakers, a more three-dimensional and immersive listening experience can be created, ensuring that the sound is evenly distributed in the car, making the driver and passengers feel as if they are in a private music space.

[0036] In a specific embodiment, the headrest can be connected to the vehicle's infotainment system via TWS Bluetooth, and also to a terminal device, including a mobile phone, tablet, or other electronic device. Passengers can directly control the headrest speakers via their mobile phones or other devices, play music from their phones, and access navigation information from their phones. This ensures that important intersection information is not missed even in noisy or distracted situations in the car. Furthermore, multiple sets of car seat headrest speakers can be installed in a single vehicle, allowing passengers to control their own headrest speakers individually.

[0037] The headrest speakers support Bluetooth and USB connectivity, allowing car owners to connect to their mobile devices via Bluetooth or insert a USB drive to select different sound quality styles, volume levels, and sound field effects to create their own personalized music space.

[0038] The headrests are made of memory foam, which can adaptively adjust to the curves of the head and neck, effectively relieving fatigue from long journeys and ensuring that passengers can enjoy music while maintaining a comfortable seating posture and safe driving condition, thus improving driving and riding comfort.

[0039] It should be noted that the above embodiments are illustrative of the present invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0040] Those skilled in the art will understand that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope defined by the claims of this utility model.

Claims

1. A car seat headrest speaker, characterized in that, include: Microcontroller, digital signal processor, power amplifier chip; the output of the power amplifier chip is connected to the speaker, and the input of the power amplifier chip is connected to the digital signal processor. The digital signal processor is also connected to the microcontroller; the microcontroller has a Bluetooth transceiver and is connected to the vehicle's infotainment system via a CAN interface. The bottom of the car seat headrest speaker includes a magnetic attraction device or a sliding buckle device, and corresponding magnetic attraction devices or sliding buckle devices are installed on both sides of the headrest. The car seat headrest speaker is detachably connected to the car seat headrest through the magnetic attraction device or the sliding buckle device. The car seat headrest speaker also includes two pins. The vehicle's infotainment system transmits signals and provides power to the car seat headrest speaker through the pins. The two pins are used to connect with the vehicle's infotainment system. The microcontroller receives CAN protocol signals from the vehicle's infotainment system through the pins and controls the Bluetooth transceiver to enter TWS pairing connection mode based on the CAN protocol signals.

2. The car seat headrest speaker according to claim 1, characterized in that, include: The power amplifier chip and the number of speakers are both two, one for the left channel and one for the right channel.

3. The car seat headrest speaker according to claim 1, characterized in that, The headrest speaker uses a full-range speaker module.

4. The car seat headrest speaker according to claim 2, characterized in that, The left and right channel speakers combine to form a 2.0 channel audio output.

5. The car seat headrest speaker according to claim 4, characterized in that, It also includes a subwoofer, and the left channel speaker, the right channel speaker and the subwoofer are combined to form a 2.1 channel system.

6. The car seat headrest speaker according to claim 1, characterized in that, It also includes a USB interface.

7. The car seat headrest speaker according to claim 1, characterized in that, The car seat headrest is made of memory foam.

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