A vehicle control circuit board card

Abstract

The utility model discloses a vehicle control circuit board card relates to vehicle -mounted facility field provides a kind of basic circuit of voice control vehicle-mounted equipment. Board card includes substrate and is set on the power supply circuit, main control circuit, voice acquisition circuit, encoding circuit, decoding circuit, power amplifier circuit, relay control circuit and cellular mobile communication circuit of the substrate;Main control circuit is connected encoding circuit, decoding circuit, relay control circuit and cellular mobile communication circuit respectively;The output end of voice acquisition circuit is connected encoding circuit;The output end of decoding circuit is connected power amplifier circuit;Relay control circuit includes relay control chip and relay group, and relay group includes at least one relay, and each relay is connected relay control chip respectively;Each relay is used to connect the controlled equipment of vehicle respectively. Board card simple structure, less circuit, small space occupation, easy to install, flexible to use, can give vehicle certain intelligent function.

Description

Technical Field

[0001] This utility model relates to an on-board facility, and more particularly to a vehicle control circuit board. Background Technology

[0002] With the development of artificial intelligence and vehicle networking technology, most cars, especially new energy vehicles, are now equipped with intelligent vehicle control systems, which are used to control on-board facilities to perform corresponding actions through voice, terminals and other means, such as adjusting the air conditioning temperature and opening and closing windows by voice.

[0003] However, intelligent vehicle control systems are pre-installed on vehicles at the factory and are not found on vehicles already in circulation, especially gasoline-powered vehicles. Adding such a system would almost certainly require modifications to the entire vehicle's wiring and structure, which, even disregarding the legality of such modifications, would still affect the vehicle's structural stability to some extent. Furthermore, as intelligent vehicle control systems are complete installations, not all functions may be necessary for the user, making simplification impossible. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems by providing a vehicle control circuit board card, which provides a basic circuit capable of voice control of in-vehicle equipment. This allows users to assign a certain degree of intelligent functionality to the vehicle by burning in the corresponding function codes according to their needs for the controlled equipment.

[0005] The technical solution adopted in this utility model is as follows: A vehicle control circuit board card, comprising: substrate; The power supply circuit, main control circuit, voice acquisition circuit, encoding circuit, decoding circuit, power amplifier circuit, relay control circuit, and cellular mobile communication circuit are disposed on the substrate. The power supply circuit is connected to the main control circuit; The main control circuit is connected to the encoding circuit, decoding circuit, relay control circuit and cellular mobile communication circuit respectively; The output of the voice acquisition circuit is connected to the encoding circuit; The output of the decoding circuit is connected to the power amplifier circuit. The relay control circuit includes a relay control chip and a relay group, the relay group including at least one relay, each relay being connected to the relay control chip; each relay is used to connect to the controlled equipment of the vehicle.

[0006] Furthermore, the relay control chip includes at least one I / O expansion chip; each I / O expansion chip is connected to the main control circuit through a data bus and an address bus respectively; and the I / O ports of each I / O expansion chip are connected to the relay one by one.

[0007] Furthermore, the board also includes: a voice recognition circuit; the voice recognition circuit is disposed on the substrate; the voice recognition circuit is connected to the main control circuit; the output terminal of the voice acquisition circuit is also connected to the voice recognition circuit; the output terminal of the voice recognition circuit is connected to the power amplifier circuit.

[0008] Furthermore, the voice recognition circuit includes a CI1302 chip and an SPK power amplifier sub-circuit; the CI1302 chip is connected to the main control circuit via a serial port; the CI1302 chip is connected to the SPK power amplifier sub-circuit via an audio output port; the output terminal of the SPK power amplifier sub-circuit is connected to the input terminal of the power amplifier circuit.

[0009] Furthermore, the power amplifier circuit includes a TPA3116D2 / TPA3118D2 chip; the analog audio input terminals of the TPA3116D2 / TPA3118D2 chip are respectively connected to the output terminal of the decoding circuit and the output terminal of the SPK power amplifier sub-circuit; the signal output terminal of the TPA3116D2 / TPA3118D2 chip is used to connect to the power amplifier device.

[0010] Furthermore, the encoding circuit includes a WM8782 chip; the analog audio input terminal of the WM8782 chip is connected to the voice acquisition circuit; the digital audio output terminal of the WM8782 chip is connected to the main control circuit through the IIS interface.

[0011] Furthermore, the decoding circuit includes a PCM5102 chip; the digital audio input terminal of the PCM5102 chip is connected to the main control circuit; and the analog audio output terminal of the PCM5102 chip is connected to the analog audio input terminal of the power amplifier circuit.

[0012] Furthermore, the cellular mobile communication circuit is an ML307 communication module; the ML307 communication module is connected to the main control circuit via a serial port.

[0013] Furthermore, the power supply circuit includes a 5V power supply sub-circuit and a 3.3V power supply sub-circuit; the 5V power supply sub-circuit is connected to an external power source; and the 3.3V power supply sub-circuit is connected to the 5V power supply sub-circuit.

[0014] Furthermore, the main control circuit includes an ESP32 main control chip; the ESP32 main control chip is connected to the outside via an I / O port.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: The vehicle control circuit board designed in this utility model integrates basic circuitry for voice acquisition, processing, and response. Users can flexibly install this board onto corresponding controlled devices in their vehicles according to their needs, enabling voice control of these devices and granting the vehicle certain intelligent functions. This eliminates the need for extensive vehicle modifications, ensuring convenience during installation and maintaining vehicle safety. This application also allows users to flexibly expand the number of controlled devices while still achieving independent control of each device. The board has fewer circuit lines, a simple structure, small footprint, and is easy to install. Attached Figure Description

[0016] Figure 1 This is a circuit diagram of a vehicle control circuit board in one embodiment.

[0017] Figure 2 This is a circuit structure diagram of a 5V power supply sub-circuit in one embodiment.

[0018] Figure 3 This is a circuit diagram of a 3.3V power supply sub-circuit in one embodiment.

[0019] Figure 4 This is a circuit structure diagram of the main control circuit in one embodiment.

[0020] Figure 5 This is a circuit structure diagram of the encoding circuit in one embodiment.

[0021] Figure 6 This is a circuit structure diagram of the decoding circuit in one embodiment.

[0022] Figure 7 This is a circuit diagram of a power amplifier circuit in one embodiment.

[0023] Figure 8 This is a circuit diagram of a relay control circuit in one embodiment.

[0024] Figure 9 This is a circuit diagram showing the cascaded relay control chips.

[0025] Figure 10 This is the circuit structure diagram of the ML307 communication module.

[0026] Figure 11 This is a circuit structure diagram of the CI1302 chip circuit in one embodiment.

[0027] Figure 12 This is a circuit diagram of the SPK power amplifier sub-circuit in one embodiment. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings.

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0030] In one alternative embodiment, this application proposes a vehicle control circuit board. This vehicle control circuit board, as a basic card, includes a base plate and various circuits mounted on the base plate.

[0031] Specifically, such as Figure 1 As shown, these circuits include a power supply circuit, a main control circuit, a voice acquisition circuit, an encoding circuit, a decoding circuit, a power amplifier circuit, a relay control circuit, and a cellular mobile communication circuit.

[0032] The power supply circuit connects to the main control circuit, providing operating power to the main control circuit and other circuits connected to it, such as encoding circuits, decoding circuits, relay control circuits, and cellular mobile communication circuits. The power supply circuit is externally connected to the vehicle's power supply, obtaining raw power from it, and then performing voltage reduction and regulation to obtain a power voltage suitable for the vehicle control circuit board.

[0033] As an optional implementation, the power supply circuit includes a 5V power supply sub-circuit and a 3.3V power supply sub-circuit. The 5V power supply sub-circuit is connected to the vehicle's power supply, transforming the vehicle's power supply (usually 12V) to 5V (the operating voltage of most chips is 5V or 3.3V). The 3.3V power supply sub-circuit is connected to the 5V power supply sub-circuit to transform the 5V power supply to 3.3V.

[0034] like Figure 2 As shown, the 5V power supply sub-circuit consists of an MP1584 power chip and its peripheral circuitry. The MP1584 power chip is a DC-DC adjustable step-down chip. The vehicle power supply is input from the VIN pin of the MP1584 power chip and outputs a stable 5V voltage from the SW pin.

[0035] like Figure 3 As shown, the 3.3V power supply sub-circuit consists of an AMS1117 voltage regulator and its peripheral circuitry. The VIN pin (input pin) of the AMS1117 voltage regulator is connected to the output terminal (i.e., the 5V power supply) of the 5V power supply sub-circuit, and a stable 3.3V power supply is output through the VOUT pin.

[0036] The power supply circuit provided by the above embodiments can provide two stable power supplies: 5V and 3.3V.

[0037] The main control circuit is connected to the encoding circuit, decoding circuit, relay control circuit, and cellular mobile communication circuit to exchange signals or data with these circuits.

[0038] As an optional implementation method, such as Figure 4 As shown, the main control circuit includes the ESP32 main control chip and its peripheral circuitry. The ESP32 main control chip includes a large number of I / O ports, which are connected to different circuits to transmit different data or signals. For example... Figure 4 In the ESP32 main control chip, pins IO4 (GPIO4 port), IO5 (GPIO5 port), and IO6 (GPIO6 port) are used to connect to the encoding circuit; pins IO7 (GPIO7 port), IO15 (GPIO15 port), and IO16 (GPIO16 port) are used to connect to the decoder; pins IO17 (PA2 port), IO18 (PA3 port), IO19 (PA5 port), IO20 (PA6 port), and IO0 (PA4 port) are used to connect to the voice recognition circuit (if any); pins IO11 (4G TX port) and IO12 (4G RX port) are used to connect to the cellular mobile communication circuit; and pins IO9 (SCK port) and IO10 (SDA port) are used to connect to the relay control circuit.

[0039] The output of the voice acquisition circuit is connected to the encoding circuit. The voice acquisition circuit is used to capture analog audio signals, i.e., statements used by the user to control the controlled device, such as "lower the air conditioning temperature" or "open the car window." The voice acquisition circuit can use devices such as microphones (MICs) to acquire analog audio signals.

[0040] The voice acquisition circuit transmits the acquired analog audio to the encoding circuit, which performs analog-to-digital conversion to obtain digital audio, thus facilitating calculation and processing by the main control circuit and other components.

[0041] As an optional implementation method, such as Figure 5 As shown, the encoding circuit includes the WM8782 chip and its peripheral circuitry. The analog audio input terminals (AINL, AINOPL, AINR, and AINOPR pins) of the WM8782 chip are connected to the voice acquisition circuit to receive the analog audio acquired by the voice acquisition circuit. The digital audio output terminal (DOUT pin) of the WM8782 chip is connected to the main control circuit via the IIS interface to send the IIS digital signal converted from the analog audio to the main control chip for processing / response.

[0042] As shown in Figure 5, the clock signal CLK of the WM8782 chip is generated by an external crystal oscillator circuit, which is composed of a crystal oscillator and a D flip-flop. The D flip-flop outputs the clock signal CLK to the MCLK pin of the WM8782 chip.

[0043] The output of the decoding circuit is connected to the power amplifier circuit. The decoding circuit converts digital audio into analog audio, which is then amplified by the power amplifier circuit and played back by the amplifier. For example, after the main control chip receives the response to the user's voice, it passes it to the decoding circuit to be converted into analog audio, amplified by the power amplifier circuit, and then played back by the amplifier (such as a car audio system).

[0044] like Figure 6 As shown, in one alternative embodiment, the decoding circuit includes a PCM5102 chip and its peripheral circuitry. The digital audio input (DIN pin) of the PCM5102 chip is connected to the main control circuit to receive digital audio. The analog audio output (OUTL and OUTR pins) of the PCM5102 chip is connected to the analog audio input of the power amplifier circuit to transmit the analog audio (ESP-LINE-L and ESP-LINE-R) converted from the IIS digital signal to the power amplifier circuit.

[0045] A power amplifier circuit is used to amplify the power of received analog audio. For example... Figure 7 As shown, in one optional implementation, the power amplifier circuit includes a TPA311XD2 chip and its peripheral circuitry, where X represents a specific TPA311 chip model, such as a TPA3116D2 chip or a TPA3118D2 chip. The analog audio input terminals (RINP and RINN pins) of the TPA3116D2 / TPA3118D2 chip are connected to the output terminals of the decoding circuit to receive the analog audio output by the decoding circuit. The signal output terminals (OUTPR, OUTNR, OUTPL, and OUTNL pins) of the TPA3116D2 / TPA3118D2 chip are used to connect to a power amplifier device (such as a speaker) to transmit the amplified analog audio to the power amplifier device, driving the device to play audio. An indicator circuit consisting of a resistor R6 and a diode D14 can also be connected to the power port (PVCC pin) of the TPA3116D2 / TPA3118D2 chip to indicate the operating status of the TPA3116D2 / TPA3118D2 chip.

[0046] The relay control circuit includes a relay control chip and a relay group. The relay group includes at least one relay, each connected to the relay control chip and controlled by the chip to turn on / off. Each relay is used to connect to a controlled device in the vehicle; for example, one relay connects to the window switch, one to the air conditioning switch, and one to the door lock switch. Different relays connect to different ports on the relay control chip.

[0047] As an optional implementation, the relay control chip includes at least one I / O expansion chip. Each I / O expansion chip is connected to the main control circuit via a data bus and a clock bus; the I / O ports of each I / O expansion chip are connected to the relays one by one.

[0048] Because an I / O expansion chip has a limited number of ports, the number of controlled devices it can connect to is also limited. By addressing multiple I / O expansion chips to distinguish them, each relay can be precisely located by locating the address of the I / O expansion chip.

[0049] For example, such as Figure 8 As shown, the I / O expansion chip uses the MCP23017 chip. One MCP23017 chip has 16 control ports (pins), enabling independent control of 16 relays. If the number of controlled devices exceeds 16, multiple MCP23017 chips need to be added, and each MCP23017 chip needs to be addressed separately. For example... Figure 9 As shown, each MCP23017 chip is connected to the main control circuit via the SCK pin and the SDA pin (e.g., Figure 4 The IO9 pin (SCK port) and IO10 pin (SDA port) of the ESP32 chip.

[0050] For each MCP23017 chip (i.e., I / O expansion chip), taking one of its control ports (such as GPA1 pin) as an example, it controls the conduction / turn-off of a transistor by outputting a high / low level. This transistor is connected in series with the corresponding relay. By controlling the open and closed state of the transistor, the open and closed state of the relay is controlled, thereby controlling the conduction / turn-off state between the relay input (relay pin 4) and the output (relay pin 6).

[0051] In addition, to facilitate wiring, a power strip is provided on the base plate. The power strip includes multiple sockets, and the input and output terminals of each relay are connected to the sockets of the power strip to facilitate wiring and connection of the controlled equipment.

[0052] Cellular mobile communication circuits are used for data interaction between the main control circuit and the remote terminal / platform. For example, when the remote platform uses a Large Language Model (LLM) for speech recognition and response, the main control circuit uploads the collected and converted user audio to the remote platform via the cellular mobile communication circuit. After the remote platform understands and receives the response audio / command (such as an Internet of Things (IoT) command), the cellular mobile communication circuit then transmits it back to the main control circuit, which then passes it to the decoding circuit (if the response is audio) or the relay control circuit (if the response is a command).

[0053] As an optional implementation, the cellular mobile communication circuit is the ML307 communication module, which is connected to the main control circuit via a serial port.

[0054] like Figure 10 As shown, the ML307 communication module includes a 3.9V voltage regulator, a Nano-SIM card slot, and an ML307A-DSLN module. The 3.9V voltage regulator uses the SY8120B voltage regulator chip and its peripheral circuitry to step down the 5V power supply (connected from the 5V power supply sub-circuit) to 3.9V, powering the ML307A-DSLN module. The Nano-SIM card slot houses the SIM card, which transmits SIM-DATA to the ML307A-DSLN module via the I / O port to obtain communication permissions. After the ML307A-DSLN module has its RF antenna installed on the ANT RF antenna mount connected to the ANT-MAIN pin, it can interact with the remote platform / terminal, exchanging data with the main control circuit via the UART0_RXD and UART0_TXD pins.

[0055] As an alternative implementation, a local voice control solution can be designed for the vehicle control circuit board, with a voice recognition circuit mounted on the board. This voice recognition circuit is connected to the main control circuit to transmit the voice response results to it. The output of the voice acquisition circuit is also connected to this voice recognition circuit to receive user voice data for understanding and response. The output of the voice recognition circuit is connected to a power amplifier circuit to transmit the response audio to the power amplifier circuit to drive playback when relay control is not required.

[0056] As an optional implementation method, such as Figure 11 and Figure 12As shown, the voice recognition circuit includes a CI1302 chip and an SPK power amplifier sub-circuit. The CI1302 chip has powerful language understanding capabilities and connects to the main control circuit via a serial port to transmit corresponding commands to the main control circuit when the controlled device needs to be controlled in response to the recognized user's voice. The CI1302 chip is connected to the SPK power amplifier sub-circuit via its audio output port (HPOUT pin). The output terminals (VO1 and VO2 pins) of the SPK power amplifier sub-circuit are connected to the input terminals of the power amplifier circuit (e.g., ...). Figure 7 In this embodiment, the RINP and RINN pins of the TPA3116D2 chip are used to transmit the processed analog audio to the power amplifier circuit.

[0057] like Figure 11 As shown, ports PA2, PA3, PA4, PA5, and PA6 of the CI1302 chip are connected to the corresponding I / O ports on the main control circuit (taking the ESP32 chip as an example). Port PA4 can also be connected to an indicator circuit consisting of resistor R1 and diode D1 connected in series to indicate the operating status. The MICPL and MICNL pins of the CI1302 chip are connected to the corresponding output ports on the encoding circuit (taking the WM8287 chip as an example). The MICPR pin of the CI1302 chip is connected to the ASR_SPK signal fed back from the SPK power amplifier sub-circuit.

[0058] As shown in Figure 12, the SPK power amplifier sub-circuit is composed of the FM8002A chip and its peripheral circuitry. The IN- pin of the FM8002A chip is connected to the HPOUT pin of the CI1302 chip to obtain (analog) output audio. The VO1 and VO2 pins of the FM8002A chip output the amplified analog audio signals ASR_SPKL+ and ASR_SPKL-. Figure 7 As shown, the analog audio output terminal of the FM8002A chip is connected to the analog audio input terminal (RINP pin and RINN pin) of the power amplifier circuit.

[0059] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vehicle control circuit board card, characterized in that, include: substrate; The power supply circuit, main control circuit, voice acquisition circuit, encoding circuit, decoding circuit, power amplifier circuit, relay control circuit, and cellular mobile communication circuit are disposed on the substrate. The power supply circuit is connected to the main control circuit; The main control circuit is connected to the encoding circuit, decoding circuit, relay control circuit and cellular mobile communication circuit respectively; The output of the voice acquisition circuit is connected to the encoding circuit; The output of the decoding circuit is connected to the power amplifier circuit. The relay control circuit includes a relay control chip and a relay group, the relay group including at least one relay, each relay being connected to the relay control chip; each relay is used to connect to the controlled equipment of the vehicle.

2. The vehicle control circuit board card as described in claim 1, characterized in that, The relay control chip includes at least one I / O expansion chip; each I / O expansion chip is connected to the main control circuit through a data bus and an address bus; and the I / O ports of each I / O expansion chip are connected to the relays one by one.

3. The vehicle control circuit board card as described in claim 1, characterized in that, Also includes: A voice recognition circuit; the voice recognition circuit is disposed on the substrate; the voice recognition circuit is connected to the main control circuit; The output of the voice acquisition circuit is also connected to the voice recognition circuit; the output of the voice recognition circuit is connected to the power amplifier circuit.

4. The vehicle control circuit board card as described in claim 3, characterized in that, The voice recognition circuit includes a CI1302 chip and an SPK power amplifier sub-circuit; the CI1302 chip is connected to the main control circuit via a serial port; the CI1302 chip is connected to the SPK power amplifier sub-circuit via an audio output port; the output terminal of the SPK power amplifier sub-circuit is connected to the input terminal of the power amplifier circuit.

5. The vehicle control circuit board card as described in claim 4, characterized in that, The power amplifier circuit includes a TPA3116D2 / TPA3118D2 chip; the analog audio input terminals of the TPA3116D2 / TPA3118D2 chip are respectively connected to the output terminal of the decoding circuit and the output terminal of the SPK power amplifier sub-circuit; the signal output terminal of the TPA3116D2 / TPA3118D2 chip is used to connect to the power amplifier device.

6. The vehicle control circuit board card as described in claim 1, characterized in that, The encoding circuit includes a WM8782 chip; the analog audio input terminal of the WM8782 chip is connected to the voice acquisition circuit; the digital audio output terminal of the WM8782 chip is connected to the main control circuit through the IIS interface.

7. The vehicle control circuit board card as described in claim 1 or 5, characterized in that, The decoding circuit includes a PCM5102 chip; the digital audio input terminal of the PCM5102 chip is connected to the main control circuit; the analog audio output terminal of the PCM5102 chip is connected to the analog audio input terminal of the power amplifier circuit.

8. The vehicle control circuit board card as described in claim 1, characterized in that, The cellular mobile communication circuit is an ML307 communication module; the ML307 communication module is connected to the main control circuit via a serial port.

9. The vehicle control circuit board card as described in claim 1, characterized in that, The power supply circuit includes a 5V power supply sub-circuit and a 3.3V power supply sub-circuit; the 5V power supply sub-circuit is connected to an external power source; the 3.3V power supply sub-circuit is connected to the 5V power supply sub-circuit.

10. The vehicle control circuit board card as described in any one of claims 1-6, 8, and 9, characterized in that, The main control circuit includes an ESP32 main control chip; the ESP32 main control chip is connected to the outside via an I / O port.

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