Automobile bluetooth audio with ANCS push function

Abstract

The utility model relates to vehicle-mounted sound equipment technical field, specifically disclose a kind of car bluetooth sound with ANCS push function, including bluetooth main control circuit, FM antenna, bluetooth antenna, display screen circuit, audio power amplifier circuit, voice broadcast circuit and memory card interface circuit, the FM antenna, bluetooth antenna, display screen circuit, audio power amplifier circuit and memory card interface circuit are all with the bluetooth main control circuit electric connection, the voice broadcast circuit with the audio power amplifier circuit electric connection.The utility model is connected with mobile phone by setting bluetooth main control circuit and bluetooth antenna cooperation, to obtain the notification such as mobile phone end by ANCS function using BLE connection, and light indication and voice broadcast reminding are carried out by display screen circuit and voice broadcast circuit, and function diversification can reduce manufacturing cost, and manufacturing cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of vehicle audio equipment technology, and in particular to a car Bluetooth speaker with ANCS push function. Background Technology

[0002] With the rapid development of the automotive industry, in-vehicle audio systems are becoming increasingly widely used and have become an important component of vehicle electronic systems.

[0003] A search revealed that Chinese utility model patent CN218122985U discloses an intelligent voice-controlled car audio player, including a Bluetooth controller and a DVD processor, radio module, voice control system, LCD driver chip, infrared remote control, control buttons, and a first crystal oscillator connected to the Bluetooth controller. It also includes a video output interface, memory, and a second crystal oscillator connected to the DVD processor. This invention solves the problems of traditional car audio systems, which typically use CD / DVD players, which are complex to assemble, time-consuming, labor-intensive, and costly, and lack voice control functionality. Compared to existing technologies, this utility model eliminates the CD / DVD drive mechanism, simplifies the structural design, reduces production and after-sales maintenance costs, and improves production efficiency. Furthermore, by integrating the infrared remote control and control buttons, it achieves control of multiple functions and adds voice functionality, making it more convenient for users.

[0004] For example, Chinese utility model patent CN215244692U discloses an in-vehicle external Bluetooth multimedia device, including a two-way wireless communication operating device and a main unit. The operating device includes buttons and a display screen, and is detachably mounted on the spokes of the steering wheel. The main unit includes a processor, a Bluetooth module for receiving multimedia signals from external electronic products, a transmission module for transmitting multimedia signals to the car, and a plug for connecting to the car's cigarette lighter socket for power. Operation commands are input via buttons and sent to the main unit for processing. The processor of the main unit receives the operation commands, processes the received multimedia, sends it to the display screen of the operating device for display, and sends the audio to the car audio system. The operating device is mounted on the steering wheel, and the main unit is plugged into the cigarette lighter socket. The main unit's data is displayed on the operating device on the steering wheel, making the main unit very simple. It eliminates the need for buttons and a display screen, making it convenient and safe, requiring no vehicle modification, and retaining the plug-and-play feature of in-vehicle Bluetooth MP3 players.

[0005] While the existing car audio systems can meet basic usage needs, they can only play music and make hands-free calls via Bluetooth, but cannot receive mobile phone message notifications or alert users to messages on their phones. Only high-priced car devices that integrate Wi-Fi and Bluetooth and support CarPlay, HiCar, or Android Auto and other mobile phone interconnection technologies can achieve this function, resulting in high production costs. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to provide a car Bluetooth speaker with ANCS push function, which addresses the above-mentioned defects of the prior art. By setting up a Bluetooth main control circuit and a Bluetooth antenna to connect to a mobile phone, it can use BLE connection to obtain notifications and other messages from the mobile phone through the ANCS function, and provide light indication and voice broadcast reminders through the display circuit and voice broadcast circuit. It has diversified functions, can reduce manufacturing costs, and has a low production cost.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: A car Bluetooth audio system with ANCS push function includes a Bluetooth main control circuit, an FM antenna, a Bluetooth antenna, a display circuit, an audio power amplifier circuit, a voice broadcast circuit, and a memory card interface circuit. The FM antenna, Bluetooth antenna, display circuit, audio power amplifier circuit, and memory card interface circuit are all electrically connected to the Bluetooth main control circuit, and the voice broadcast circuit is electrically connected to the audio power amplifier circuit.

[0008] Preferably, the Bluetooth main control circuit includes a BLE Bluetooth chip U2, a crystal oscillator Y1, a transistor Q4, a transistor Q7, and a reset button KEY6. The FM antenna, Bluetooth antenna, crystal oscillator Y1, and transistor Q4 are all connected to the BLE Bluetooth chip U2, and the reset button is connected to transistor Q4 and transistor Q7 respectively.

[0009] Preferably, the display circuit includes transistors Q1, Q2, and Q3, resistors R29, R60, and R61. Resistors R29, R60, and R61 are all connected to the BLE Bluetooth chip U2. Resistors R29, R60, and R61 are respectively connected to transistors Q2, Q1, and Q3. Transistors Q2, Q1, and Q3 are connected to the TFT display screen.

[0010] Preferably, the audio power amplifier circuit includes an audio power amplifier chip U4, resistors R36, R38, R39, and R40, and capacitors C25, C27, C28, and C29. Resistors R36, R38, R39, and R40 are respectively connected to capacitors C25, C27, C28, and C29. Capacitors C25, C27, C28, and C29 are all connected to the audio power amplifier chip U4. The audio power amplifier chip U4 is connected to the BLE Bluetooth chip U2.

[0011] Preferably, the voice broadcasting circuit includes a speaker interface CN2 and an inductor L2. The speaker interface CN2 is connected to the audio power amplifier chip U4 and the inductor L2 respectively, and a speaker is connected to the speaker interface CN2.

[0012] Preferably, the memory card interface circuit includes a USB interface CN5, a USB interface USB1, and an SD card interface J1, all of which are connected to the BLE Bluetooth chip U2.

[0013] By adopting the above technical solution, the car Bluetooth speaker with ANCS push function provided by this utility model has the following beneficial effects: the FM antenna, Bluetooth antenna, display circuit, audio power amplifier circuit and memory card interface circuit in the car Bluetooth speaker are all electrically connected to the Bluetooth main control circuit, and the voice broadcast circuit is electrically connected to the audio power amplifier circuit. By setting the Bluetooth main control circuit and Bluetooth antenna to connect to the mobile phone, the BLE connection is used to obtain notifications and other messages from the mobile phone through the ANCS function, and the display circuit and voice broadcast circuit provide light indication and voice broadcast reminders for the messages from the mobile phone. The function is diversified, and there is no need to use in-vehicle devices that integrate WIFI and Bluetooth and support Carplay, Hicar or Android Auto and other mobile phone interconnection, which can reduce the manufacturing cost of Bluetooth speakers and make the manufacturing cost lower. Attached Figure Description

[0014] Figure 1 This is a structural block diagram of the present invention; Figure 2 This is a circuit diagram of the Bluetooth main control circuit and the display circuit in this utility model; Figure 3 This is a circuit diagram of the audio power amplifier circuit, the voice broadcast circuit, and the memory card interface circuit in this utility model. In the diagram, 1-Bluetooth main control circuit, 2-FM antenna, 3-Bluetooth antenna, 4-Display circuit, 5-Audio power amplifier circuit, 6-Voice broadcast circuit, and 7-Memory card interface circuit. Detailed Implementation

[0015] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0018] like Figure 1-3 As shown, the car Bluetooth speaker with ANCS push function includes a Bluetooth main control circuit 1, an FM antenna 2, a Bluetooth antenna 3, a display circuit 4, an audio power amplifier circuit 5, a voice broadcast circuit 6, and a memory card interface circuit 7. The FM antenna 2, Bluetooth antenna 3, display circuit 4, audio power amplifier circuit 5, and memory card interface circuit 7 are all electrically connected to the Bluetooth main control circuit 1, and the voice broadcast circuit 6 is electrically connected to the audio power amplifier circuit 5. It is understandable that in practical applications, the Bluetooth main control circuit 1, FM antenna 2, Bluetooth antenna 3, display circuit 4, audio power amplifier circuit 5, voice broadcast circuit 6, and memory card interface circuit 7 can all be integrated onto a single PCB circuit board and used within the car Bluetooth speaker.

[0019] Specifically, the Bluetooth main control circuit 1 includes a BLE Bluetooth chip U2, a crystal oscillator Y1, transistors Q4 and Q7, and a reset button KEY6. The FM antenna 2, Bluetooth antenna 3, crystal oscillator Y1, and transistor Q4 are all connected to the BLE Bluetooth chip U2, and the reset button is connected to both transistors Q4 and Q7. It is understood that the BLE Bluetooth chip U2 uses a 6603 Bluetooth chip, which is used to connect to the mobile phone via the ANCS protocol and receive various notification messages from the mobile phone.

[0020] Specifically, the display circuit 4 includes transistors Q1, Q2, and Q3, resistors R29, R60, and R61. Resistors R29, R60, and R61 are all connected to the BLE Bluetooth chip U2. Resistors R29, R60, and R61 are respectively connected to transistors Q2, Q1, and Q3. Transistors Q2, Q1, and Q3 are connected to the TFT display screen.

[0021] Specifically, the audio power amplifier circuit 5 includes an audio power amplifier chip U4, resistors R36, R38, R39, and R40, and capacitors C25, C27, C28, and C29. Resistors R36, R38, R39, and R40 are respectively connected to capacitors C25, C27, C28, and C29. All capacitors C25, C27, C28, and C29 are connected to the audio power amplifier chip U4, which is connected to the BLE Bluetooth chip U2. It is understood that the audio power amplifier chip U4 uses a TDA7388 chip to amplify the audio signal in the message before outputting it to the voice broadcast circuit 6 for voice broadcasting.

[0022] Specifically, the voice broadcasting circuit 6 includes a speaker interface CN2 and an inductor L2. The speaker interface CN2 is connected to both the audio power amplifier chip U4 and the inductor L2, and a speaker is connected to the speaker interface CN2. Understandably, this speaker is used to play the processed audio signal.

[0023] Specifically, the memory card interface circuit 7 includes a USB interface CN5, a USB interface USB1, and an SD card interface J1. All three interfaces are connected to the BLE Bluetooth chip U2. It is understood that the USB interface CN5 and USB1 can be used to connect a USB flash drive for data storage, and the SD card interface J1 is used to connect an SD card for data storage.

[0024] Understandably, the car Bluetooth audio system also includes a button control circuit and other peripheral circuits. The button control circuit includes buttons KEY1-KEY5, buttons KEY8-KEY13, etc. The components and their specific connections of the peripheral circuit are shown in the attached figure. The corresponding signal transmission principle is conventional technology, which will not be described in detail here.

[0025] Understandably, this utility model has a reasonable design and unique structure. By setting up a Bluetooth main control circuit 1 and a Bluetooth antenna 3 to connect to a mobile phone, it uses BLE connection to obtain notifications and other messages from the mobile phone through the ANCS function. It also uses a display circuit 4 and a voice broadcast circuit 6 to provide light indication and voice broadcast reminders for messages from the mobile phone. It has diversified functions and does not require the use of in-vehicle devices that integrate WIFI and Bluetooth and support CarPlay, HiCar, or Android Auto and other mobile phone interconnection. This reduces the manufacturing cost of Bluetooth speakers and makes the manufacturing cost lower.

[0026] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A car Bluetooth audio system with ANCS push function, characterized in that: It includes a Bluetooth main control circuit, an FM antenna, a Bluetooth antenna, a display screen circuit, an audio power amplifier circuit, a voice broadcast circuit, and a memory card interface circuit. The FM antenna, Bluetooth antenna, display screen circuit, audio power amplifier circuit, and memory card interface circuit are all electrically connected to the Bluetooth main control circuit, and the voice broadcast circuit is electrically connected to the audio power amplifier circuit.

2. The car Bluetooth audio system with ANCS push function according to claim 1, characterized in that: The Bluetooth main control circuit includes a BLE Bluetooth chip U2, a crystal oscillator Y1, a transistor Q4, a transistor Q7, and a reset button KEY6. The FM antenna, Bluetooth antenna, crystal oscillator Y1, and transistor Q4 are all connected to the BLE Bluetooth chip U2, and the reset button is connected to transistors Q4 and Q7 respectively.

3. The car Bluetooth audio system with ANCS push function according to claim 2, characterized in that: The display circuit includes transistors Q1, Q2, and Q3, resistors R29, R60, and R61. Resistors R29, R60, and R61 are all connected to the BLE Bluetooth chip U2. Resistors R29, R60, and R61 are respectively connected to transistors Q2, Q1, and Q3. Transistors Q2, Q1, and Q3 are connected to the TFT display screen.

4. The car Bluetooth audio system with ANCS push function according to claim 2, characterized in that: The audio power amplifier circuit includes an audio power amplifier chip U4, resistors R36, R38, R39, and R40, and capacitors C25, C27, C28, and C29. Resistors R36, R38, R39, and R40 are respectively connected to capacitors C25, C27, C28, and C29. Capacitors C25, C27, C28, and C29 are all connected to the audio power amplifier chip U4. The audio power amplifier chip U4 is connected to the BLE Bluetooth chip U2.

5. The car Bluetooth audio system with ANCS push function according to claim 4, characterized in that: The voice broadcast circuit includes a speaker interface CN2 and an inductor L2. The speaker interface CN2 is connected to the audio power amplifier chip U4 and the inductor L2 respectively, and a speaker is connected to the speaker interface CN2.

6. The car Bluetooth audio system with ANCS push function according to claim 2, characterized in that: The memory card interface circuit includes a USB interface CN5, a USB interface USB1, and an SD card interface J1. The USB interface CN5, USB interface USB1, and SD card interface J1 are all connected to the BLE Bluetooth chip U2.

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