WO2017193301A1 - 一种利用总线控制多用途喇叭的方法和电路 - Google Patents

一种利用总线控制多用途喇叭的方法和电路 Download PDF

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Publication number
WO2017193301A1
WO2017193301A1 PCT/CN2016/081687 CN2016081687W WO2017193301A1 WO 2017193301 A1 WO2017193301 A1 WO 2017193301A1 CN 2016081687 W CN2016081687 W CN 2016081687W WO 2017193301 A1 WO2017193301 A1 WO 2017193301A1
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WIPO (PCT)
Prior art keywords
bus
horn
sounding
signal
speaker
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PCT/CN2016/081687
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English (en)
French (fr)
Inventor
万喻
Original Assignee
万喻
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Publication date
Application filed by 万喻 filed Critical 万喻
Priority to EP16901256.4A priority Critical patent/EP3456588A4/en
Priority to PCT/CN2016/081687 priority patent/WO2017193301A1/zh
Priority to CN201680086576.1A priority patent/CN109311421B/zh
Priority to US16/307,180 priority patent/US11282489B2/en
Publication of WO2017193301A1 publication Critical patent/WO2017193301A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q5/00—Arrangement or adaptation of acoustic signal devices
    • B60Q5/005—Arrangement or adaptation of acoustic signal devices automatically actuated
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/122—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q5/00—Arrangement or adaptation of acoustic signal devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q5/00—Arrangement or adaptation of acoustic signal devices
    • B60Q5/005—Arrangement or adaptation of acoustic signal devices automatically actuated
    • B60Q5/006—Arrangement or adaptation of acoustic signal devices automatically actuated indicating risk of collision between vehicles or with pedestrians
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q5/00—Arrangement or adaptation of acoustic signal devices
    • B60Q5/005—Arrangement or adaptation of acoustic signal devices automatically actuated
    • B60Q5/008—Arrangement or adaptation of acoustic signal devices automatically actuated for signaling silent vehicles, e.g. for warning that a hybrid or electric vehicle is approaching
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • H03F3/185—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/20—Continuous tuning of single resonant circuit by varying inductance only or capacitance only

Definitions

  • the present invention relates to a horn for a vehicle, and more particularly to a method and circuit for controlling a multipurpose horn using a bus.
  • the pronunciation frequency, spectrum, sounding mode and sound pressure level requirements of the speakers are also different.
  • a car that guarantees safe driving sounds a trumpet; a vehicle locks a sound horn when parking; an alarm sound horn for vehicle burglar alarm when parking; a warning sound horn for reversing; a vehicle steering audible horn; Prompt tone horn; anti-collision radar alarm horn; electric vehicle driving analog horn and other vehicle warning sound horns for various purposes.
  • the above-mentioned multi-purpose horn can bring convenience to the user when using the vehicle to a certain extent, but when the horn of various uses is present in one vehicle at the same time, the whole vehicle circuit is too complicated and the cost is increased.
  • the invention provides a method and a circuit for controlling a multi-purpose horn by using a bus, and realizes that when a horn of a plurality of uses is simultaneously present in a vehicle, the vehicle circuit is simplified and the vehicle cost is reduced.
  • an embodiment of the present invention provides a circuit for controlling a multi-purpose speaker by using a bus, the circuit comprising:
  • Bus signal transceiver unit for controlling the speaker control of the onboard computer controller through the bus Send and receive
  • control unit configured to generate, according to the speaker control instruction, a speaker sounding signal that conforms to a current scene
  • a speaker sounding unit for sounding according to the speaker sounding signal.
  • the circuit further includes: a power amplifying unit, configured to perform power amplification on the target signal decoded by the horn sounding signal;
  • the horn sounding unit is further configured to perform sounding according to the target signal decoded by the horn sounding signal after power amplification.
  • the circuit further includes: a power supply unit for providing a regulated power supply to the circuit.
  • bus specifically includes: a controller area network CAN bus or a local interconnect network LIN bus.
  • control unit is specifically a single chip microcomputer.
  • the speaker sounding unit is specifically a piezoelectric speaker or an electromagnetic speaker.
  • the bus signal transceiver unit is composed of a bus interface chip, a bus, a first resistor R1, a second resistor R2, and a first capacitor.
  • an embodiment of the present invention provides a method for controlling a multi-purpose speaker by using a bus, the method comprising:
  • Sound is made according to the horn sounding signal.
  • the method further includes: performing power amplification on the target signal decoded by the speaker sounding signal;
  • the performing the sounding according to the speaker sounding instruction specifically includes: performing sounding according to the target signal decoded by the power amplified microphone sounding signal;
  • the horn sounding signal includes: a sounding signal of a car horn that ensures safe driving; a sound signal of a horn sounding when the vehicle is parked; and an audible horn sounding of a vehicle burglar alarm during parking Signal; the warning signal of the reversing alarm sound signal; the signal of the vehicle turning to the sound horn; the sound signal of the sound horn used for the trunk switch; the sound signal of the anti-collision radar alarm horn; the sound signal of the electric vehicle driving analog horn.
  • bus specifically includes: a CAN bus or a LIN bus.
  • the speaker is connected to the on-board computer controller through the bus, and the on-board computer controller controls the speaker occurrence, and can simultaneously satisfy the vehicle and the like. And the sound requirements of a variety of different use of the horn on the construction machinery, to simplify the vehicle circuit and reduce vehicle costs.
  • FIG. 1 is a circuit block diagram of a multi-purpose speaker controlled by a bus according to an embodiment of the present invention
  • FIG. 2 is a circuit diagram of controlling a multi-purpose speaker by using a bus according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for controlling a multi-purpose speaker by using a bus according to an embodiment of the present invention.
  • FIG. 1 is a circuit block diagram of a multi-purpose speaker controlled by a bus according to an embodiment of the present invention.
  • a bus control multi-purpose is utilized.
  • the horn's circuit is placed in the vehicle and connected to the onboard computer controller, controlled by the onboard computer controller.
  • the circuit for controlling the multipurpose speaker by the bus includes the following units.
  • the bus signal transceiver unit 110 is configured to send and receive the speaker control command of the onboard computer controller through the bus; the control unit 120 is configured to generate a speaker conforming to the current scene according to the speaker control command The audible signal; the horn sounding unit 130 is configured to perform sound according to the horn sounding signal.
  • the circuit further includes: a power amplifying unit 140, configured to perform power amplification on the target signal decoded by the horn sounding signal;
  • the speaker sounding unit 130 is further configured to perform sounding according to the target signal decoded by the power amplified microphone sounding signal.
  • the circuit further includes: a power supply unit 150 for providing a regulated power supply to the circuit.
  • the bus signal transceiver unit 110 has a bus interface, and the bus interface is connected to the onboard computer controller, and transmits and receives the speaker control command of the onboard computer controller, and the control unit 120 passes the bus and the bus to the onboard computer controller.
  • the speaker control command sent by the signal transceiver unit 110 decodes, and generates a speaker sounding signal that satisfies various scenarios according to the transmitted speaker control command. For example, the reverse horn generates an instruction; the vehicle turns to the horn to generate an instruction, etc.; it can be understood that each utterance command is converted to have a different frequency, a different frequency spectrum, and a different duty ratio depending on the vocalization requirement.
  • the power amplifying unit 150 performs power amplification on the target signal for decoding the horn generating signal, and further drives the horn sounding unit 130 to perform sounding.
  • the power supply unit 150 provides a regulated power supply for the entire circuit to protect and suppress interference from Electromagnetic Compatibility (EMC) and other vehicles.
  • EMC Electromagnetic Compatibility
  • the bus is specifically, but not limited to, a Controller Area Network (CAN) bus or a Local Interconnect Network (LIN) bus.
  • the control unit 120 is specifically a single chip microcomputer.
  • the speaker sounding unit 130 is specifically a piezoelectric speaker or an electromagnetic speaker.
  • FIG. 2 is a circuit diagram of a multi-purpose speaker controlled by a bus according to an embodiment of the present invention, which can implement the functions of each unit.
  • the circuit includes a bus signal transceiving unit 110, a control unit 120, a speaker sounding unit 130, a power amplifying unit 140, and a power supply unit 150.
  • the bus signal transceiver unit 110 is composed of a bus interface chip IC1, a first resistor R1, and a second resistor R2. And the first capacitor C1 is composed.
  • the bus interface chip IC1 is connected between VDD and ground; the bus interface chip IC1 is connected to the bus, one end of the first resistor R1 is connected to the bus, the other end is connected to the first capacitor C1; one end of the second resistor R2 is connected to the bus, and the other end is connected to the bus.
  • One end is connected to the first capacitor C1; one end of the first capacitor C1 is connected to the bus interface chip IC1, and the other end is connected to the ground.
  • the bus signal transceiver unit 110 is connected to the onboard computer through the bus, and transmits and receives the speaker control command of the onboard computer.
  • the control unit 120 is composed of a single chip IC2, a second capacitor C2, a third capacitor C3, and a crystal oscillator TX1.
  • the single chip IC2 is connected with the bus interface chip IC1; the single chip IC2 is connected between VDD and ground; one end of the second capacitor C2 is connected with one end of the single chip IC2 and the crystal oscillator TX1, and the other end of the second capacitor C2 is connected with the ground; the third capacitor C3 One end is connected to the other end of the single chip IC2 and the crystal oscillator TX1, and the other end of the third capacitor C3 is connected to the ground.
  • the speaker sounding unit 130 includes a speaker SP1 connected between VDD and the power amplifying unit 140.
  • the power amplifying unit 140 is composed of a third resistor R3, a field effect transistor T1, a first diode D1, and a fourth capacitor C4.
  • the gate of the FET is connected to the single chip IC2; the FET T1 is connected to the ground via the third resistor R3; the source of the FET T1 is connected to the ground; and the drain and source of the FET T1 are connected to the ground.
  • a parallel circuit composed of a diode D1 and a fourth capacitor C4; the anode of the first diode is connected to the source of the field effect transistor T1; the field effect transistor T1, the first diode D1 and the fourth capacitor C4 form a Absorb the protection circuit.
  • the drain of the FET T1 and the cathode of the first diode D1 are connected to the horn speaker unit 130.
  • the power amplifying circuit can be implemented by an electronic component including an insulated gate bipolar transistor (IGBT), a transistor, and a field effect transistor.
  • IGBT insulated gate bipolar transistor
  • the horn output command outputted from the single chip IC2 is amplified by the FET T1 and acts on the horn to drive the horn to sound.
  • the power supply unit 150 is composed of a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, and a transient suppression diode.
  • the fifth capacitor C5, the sixth capacitor C6, and the seventh capacitor C7 are used for EMC protection;
  • the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, and the TVS tube are connected in parallel with each other, and are connected between VDD and the ground;
  • the anti-power reverse diode D2 is connected between the TVS tube and the sixth capacitor C6;
  • the anode of the anti-power reverse diode D2 is connected with the TVS tube, and the negative pole of the anti-power reverse diode D2 is connected with the sixth capacitor C6;
  • the regulator IC3 The first end is connected to the negative pole of the anti-power reverse diode D2, the second end is connected to the seventh capacitor C7, and the third end is connected to the ground.
  • the power supply unit 150 is connected to the bus signal transceiving unit 110, the control unit 120, the horn sounding unit 130, and the power amplifying unit 140, respectively.
  • the multi-purpose speaker can be connected to the on-board computer controller through the bus, and the on-board computer controller controls the speaker occurrence, and can simultaneously satisfy the vehicle.
  • the embodiment of the present invention further provides a method for controlling a multi-purpose speaker by using a bus.
  • the method may be implemented by the foregoing circuit, and specifically includes the following steps:
  • Step 310 Send and receive a speaker control command of the onboard computer controller through a bus.
  • the bus specifically includes, but is not limited to, a CAN bus or a LIN bus
  • the onboard computer controller generates a speaker control command, and the control command is used to control the speaker in the vehicle according to different current needs of the user. Issue a sound corresponding to the user's current needs.
  • the onboard computer controller transmits the horn control command via the bus to the circuit that controls the multipurpose horn using the bus.
  • Step 320 Generate, according to the speaker control instruction, a speaker sounding signal that conforms to a current scene.
  • the circuit for controlling the multi-purpose speaker by using the bus generates a speaker sounding signal that conforms to the current scene.
  • the implementation process has been described in detail above and will not be repeated here.
  • the target signal for decoding the horn sounding signal is further generated. Power amplification is performed to drive the horn to occur.
  • the horn sounding signal that satisfies various scenarios is generated according to the horn control command.
  • a car that guarantees safe driving sounds a horn sound signal; when the vehicle is parked, the vehicle locks a sound horn sound signal; when the vehicle is parked, an alarm sound horn sounds a signal for the vehicle burglar alarm; a reversed warning sound horn sounds a signal; the vehicle turns to a sound
  • Each vocal command produces signals with different frequencies, different spectra, and different duty cycles depending on the vocalization requirements.
  • Step 330 Perform sounding according to the speaker sounding signal.
  • the circuit of the multi-purpose horn is controlled by the bus to drive the horn to occur.
  • a multi-purpose speaker can be connected to an on-board computer controller through a bus, and the on-board computer controller can control the sound of the speaker, and can simultaneously satisfy the vehicle.
  • the vocal requirements for a variety of different horns on vehicles and construction machinery When a horn with multiple uses is present in one vehicle, the vehicle circuit is simplified and the vehicle cost is reduced.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

一种利用总线控制多用途喇叭的方法和电路，所述电路包括：总线信号收发单元（110），用于通过总线对车载电脑控制器的喇叭控制指令进行收发；控制单元（120），用于根据所述喇叭控制指令，生成符合当前场景的喇叭发声信号；喇叭发音单元（130），用于根据所述喇叭发声信号进行发声。通过应用所述方法和电路，将喇叭通过总线与车载电脑控制器连接，由车载电脑控制器对喇叭发声进行控制，可同时满足车载等交通工具及工程机械上多种不同用途的喇叭的发声要求。

Description

一种利用总线控制多用途喇叭的方法和电路 技术领域
本发明涉及车辆用喇叭，尤其涉及一种利用总线控制多用途喇叭的方法和电路。
背景技术
目前，为了保证行驶安全和使用过程中便捷，在汽车、叉车等各种机动车辆、和挖掘机、起重机、推土机等工程机械上，使用了很多发声装置进行提示。
由于车辆中存在多种用途的喇叭，因此，对喇叭的发音频率、频谱及发声方式和声压级要求也是不同的。例如，保证行车安全的汽车鸣叫喇叭；驻车时车辆上锁提示音喇叭；驻车时车辆防盗报警用的警报声喇叭；倒车的警示音喇叭；车辆转向提示音喇叭；行李箱开关时用的提示音喇叭；防撞雷达报警喇叭；电动车行车模拟音喇叭等车载各种用途的警示提示音喇叭。上述多种用途的喇叭，在一定程度上可以为用户在使用车辆时带来方便，但多种用途的喇叭同时存在一个车辆中时，使得整车电路过于复杂，增加了成本。
发明内容
本发明提供了一种利用总线控制多用途喇叭的方法和电路，实现了多种用途的喇叭同时存在一个车辆中时，简化整车电路，降低车辆成本。
在第一方面，本发明实施例提供了一种利用总线控制多用途喇叭的电路，所述电路包括：
总线信号收发单元，用于通过总线对车载电脑控制器的喇叭控制指令进 行收发；
控制单元，用于根据所述喇叭控制指令，生成符合当前场景的喇叭发声信号；
喇叭发音单元，用于根据所述喇叭发声信号进行发声。
进一步地，所述电路还包括：功率放大单元，用于对所述喇叭发声信号解码的目标信号进行功率放大；
所述喇叭发音单元还用于，根据功率放大后的所述喇叭发声信号解码的目标信号进行发声。
进一步地，所述电路还包括：电源单元，用于为所述电路提供稳压电源。
进一步地，所述总线具体包括：控制器局域网络CAN总线或局域互联网络LIN总线。
进一步地，所述控制单元具体为单片机。
进一步地，所述喇叭发音单元具体为压电式喇叭，或者为电磁式喇叭。
进一步地，所述总线信号收发单元由总线接口芯片，总线，第一电阻R1、第二电阻R2以及第一电容组成。
在第二方面，本发明实施例提供了一种利用总线控制多用途喇叭的方法，所述方法包括：
通过总线对车载电脑控制器的喇叭控制指令进行收发；
根据所述喇叭控制指令，生成符合当前场景的喇叭发声信号；
根据所述喇叭发声信号进行发声。
进一步地，所述根据所述喇叭控制指令，生成符合当前场景的喇叭发声信号之后还包括：对所述喇叭发声信号解码的目标信号进行功率放大；
所述根据所述喇叭发声指令进行发声具体包括：根据功率放大后的所述喇叭发声信号解码的目标信号进行发声；
所述喇叭发声信号包括：保证行车安全的汽车鸣叫喇叭发声信号；驻车时车辆上锁提示音喇叭发声信号；驻车时车辆防盗报警用的警报声喇叭发声 信号；倒车的警示音喇叭发声信号；车辆转向提示音喇叭发声信号；行李箱开关时用的提示音喇叭发声信号；防撞雷达报警喇叭发声信号；电动车行车模拟音喇叭发声信号。
进一步地，所述总线具体包括：CAN总线或LIN总线。
通过应用本发明实施例提供的一种利用总线控制多用途喇叭的方法和电路，将喇叭通过总线与车载电脑控制器连接，由车载电脑控制器对喇叭发生进行控制，可同时满足车载等交通工具及工程机械上多种不同用途的喇叭的发声要求，实现了简化整车电路，降低车辆成本。
附图说明
图1为本发明实施例提供的利用总线控制多用途喇叭的电路框图；
图2为本发明实施例提供的利用总线控制多用途喇叭的电路图；
图3为本发明实施例提供的利用总线控制多用途喇叭的方法流程图。
具体实施方式
下面将结合附图，对本发明实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有付出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
下面结合附图1，详细说明本发明实施例提供的方案进行说明，图1为本发明实施例提供的一种利用总线控制多用途喇叭的电路框图，在本发明实施例中利用总线控制多用途喇叭的电路设置在车辆，并与车载电脑控制器连接，由车载电脑控制器进行控制。如图1所示，利用总线控制多用途喇叭的电路包括以下单元。
总线信号收发单元110，用于通过总线对车载电脑控制器的喇叭控制指令进行收发；控制单元120，用于根据喇叭控制指令，生成符合当前场景的喇叭 发声信号；喇叭发音单元130，用于根据喇叭发声信号进行发声。
进一步地，所述电路还包括：功率放大单元140，用于对所述喇叭发声信号解码的目标信号进行功率放大；
喇叭发音单元130还用于，根据功率放大后的所述喇叭发声信号解码的目标信号进行发声。
进一步地，所述电路还包括：电源单元150，用于为电路提供稳压电源。
在本发明实施例中，总线信号收发单元110具有总线接口，该总线接口与车载电脑控制器连接，对车载电脑控制器的喇叭控制指令进行收发，控制单元120对车载电脑控制器通过总线以及总线信号收发单元110发送的喇叭控制指令进行解码，根据发送的喇叭控制指令生成满足各种不同场景下的喇叭发声信号。例如，倒车喇叭发生指令；车辆转向喇叭发生指令等等；可以理解的是，每个发声指令根据发声需求的不同，转换成具有不同频率，不同频谱以及不同占空比。功率放大单元150将喇叭发生信号解码的目标信号进行功率放大，进而驱动喇叭发音单元130进行发声。电源单元150为整个电路提供稳压电源，保护及抑制电磁兼容(Electro Magnetic Compatibility，EMC)及其他交通工具的干扰。
进一步地，本发明实施例中，总线具体为但不局限于控制器局域网络(Controller Area Network，CAN)总线或局域互连网络(Local Interconnect Network，LIN)总线。控制单元120具体为单片机。喇叭发音单元130具体为压电式喇叭，或者为电磁式喇叭。
下面结合附图2，对上述利用总线控制多用途喇叭的电路进行详细说明。图2为本发明实施例提供的一种利用总线控制多用途喇叭的电路图，该电路可实现上述各单元功能。如图2所示，该电路包括总线信号收发单元110、控制单元120、喇叭发音单元130、功率放大单元140以及电源单元150。
下面分别对组成各单元的子电路进行详细说明。
总线信号收发单元110由总线接口芯片IC1，第一电阻R1、第二电阻R2 以及第一电容C1组成。总线接口芯片IC1连接在VDD与地之间；总线接口芯片IC1与总线连接，第一电阻R1的一端与总线连接，另一端与第一电容C1连接；第二电阻R2的一端与总线连接，另一端与第一电容C1连接；第一电容C1的一端与总线接口芯片IC1连接，另一端与地连接。
总线信号收发单元110，通过总线与车载电脑连接，并对车载电脑的喇叭控制指令进行收发。
控制单元120由单片机IC2、第二电容C2，第三电容C3以及晶振TX1组成。单片机IC2与总线接口芯片IC1连接；单片机IC2连接在VDD与地之间；第二电容C2的一端与单片机IC2和晶振TX1的一端连接，第二电容C2的另一端与地连接；第三电容C3的一端与单片机IC2和晶振TX1的另一端连接，第三电容C3的另一端与地连接。
喇叭发音单元130包括喇叭SP1，该喇叭SP1连接在VDD与功率放大单元140之间。
功率放大单元140由第三电阻R3、场效应管T1、第一二极管D1以及第四电容C4组成。场效应管的栅极与单片机IC2连接；场效应管T1经第三电阻R3连接至地；场效应管T1的源极与地连接；场效应管T1的漏级和源极之间连接有第一二极管D1和第四电容C4构成的并联电路；第一二极管的正极和场效应管T1的源极相连；场效应管T1、第一二极管D1以及第四电容C4组成一个吸收保护电路。场效应管T1的漏级和第一二极管D1的负极与喇叭发音单元130连接。
普通技术人员意识到，功率放大电路可以由包括绝缘栅双极型晶体管(Insulated Gate Bipolar Transistor，IGBT)、晶体管、场效应管的电子元器件实现。
从单片机IC2输出的喇叭发生指令经场效应管T1放大后作用在喇叭上，驱动喇叭发声。
电源单元150由第五电容C5、第六电容C6、第七电容C7、瞬态抑制二极 管(Transient Voltage Suppressor，TVS)、防电源反接二极管D2以及稳压器IC3。第五电容C5、第六电容C6、第七电容C7用于EMC防护；第五电容C5、第六电容C6、第七电容C7以及TVS管相互并联连接，并均连接在VDD与地之间；防电源反接二极管D2连接在TVS管与第六电容C6之间；防电源反接二极管D2的正极与TVS管连接，防电源反接二极管D2的负极与第六电容C6连接；稳压器IC3的第一端与防电源反接二极管D2的负极连接，第二端与第七电容C7连接；第三端与地连接。
电源单元150分别与总线信号收发单元110、控制单元120、喇叭发音单元130以及功率放大单元140连接。
通过应用本发明实施例提供的一种利用总线控制多用途喇叭的电路，将可实现多用途的喇叭通过总线与车载电脑控制器连接，由车载电脑控制器对喇叭发生进行控制，可同时满足车载等交通工具及工程机械上多种不同用途的喇叭的发声要求。实现了多种用途的喇叭同时存在一个车辆中时，简化整车电路，降低车辆成本。
相应地，本发明实施例还提供了一种利用总线控制多用途喇叭的方法，所述方法可通过前述电路实现，具体包括以下步骤：
步骤310、通过总线对车载电脑控制器的喇叭控制指令进行收发。
具体地，在本发明实施例中，所述总线具体包括但不限于：CAN总线或LIN总线，车载电脑控制器生成喇叭控制指令，该控制指令用于根据用户当前的不同需求，控制车辆中喇叭发出与用户当前需求对应的声音。
车载电脑控制器通过总线将喇叭控制指令传输至利用总线控制多用途喇叭的电路。
步骤320、根据所述喇叭控制指令，生成符合当前场景的喇叭发声信号。
具体地，根据该喇叭控制指令，利用总线控制多用途喇叭的电路生成符合当前场景的喇叭发声信号。前述已详细说明实现过程，在此不再复述。
进一步地，在生成喇叭发生信号后，还对喇叭发声信号解码的目标信号 进行功率放大，以驱动喇叭进行发生。
在本发明实施例中，根据喇叭控制指令生成满足各种不同场景下的喇叭发声信号。例如，保证行车安全的汽车鸣叫喇叭发声信号；驻车时车辆上锁提示音喇叭发声信号；驻车时车辆防盗报警用的警报声喇叭发声信号；倒车的警示音喇叭发声信号；车辆转向提示音喇叭发声信号；行李箱开关时用的提示音喇叭发声信号；防撞雷达报警喇叭发声信号；电动车行车模拟音喇叭发声信号等车载各种用途的警示提示音喇叭发声信号；可以理解的是，每个发声指令根据发声需求的不同，产生具有不同频率，不同频谱以及不同占空比的信号。
步骤330、根据所述喇叭发声信号进行发声。
具体地，根据喇叭发生信号，利用总线控制多用途喇叭的电路驱动喇叭进行发生。
通过应用本发明实施例提供的一种利用总线控制多用途喇叭的方法，将可实现多用途的喇叭通过总线与车载电脑控制器连接，由车载电脑控制器对喇叭发声进行控制，可同时满足车载等交通工具及工程机械上多种不同用途的喇叭的发声要求。实现了多种用途的喇叭同时存在一个车辆中时，简化整车电路，降低车辆成本。
以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种利用总线控制多用途喇叭的电路，其特征在于，所述电路包括：
    总线信号收发单元，用于通过总线对车载电脑控制器的喇叭控制指令进行收发；
    控制单元，用于根据所述喇叭控制指令，生成符合当前场景的喇叭发声信号；
    喇叭发音单元，用于根据所述喇叭发声信号进行发声。
  2. 根据权利要求1所述的电路，其特征在于，所述电路还包括：功率放大单元，用于对所述喇叭发声信号解码的目标信号进行功率放大；
    所述喇叭发音单元还用于，根据功率放大后的所述喇叭发声信号解码的目标信号进行发声。
  3. 根据权利要求2所述的电路，其特征在于，所述电路还包括：电源单元，用于为所述电路提供稳压电源。
  4. 根据权利要求1所述的电路，其特征在于，所述总线具体包括：控制器局域网络CAN总线或局域网络LIN总线。
  5. 根据权利要求1所述的电路，其特征在于，所述控制单元具体为单片机。
  6. 根据权利要求1所述的电路，其特征在于，所述喇叭发音单元具体为压电式喇叭，或者为电磁式喇叭。
  7. 根据权利要求1所述的电路，其特征在于，所述总线信号收发单元由总线接口芯片，总线，第一电阻R1、第二电阻R2以及第一电容组成。
  8. 一种利用总线控制多用途喇叭的方法，其特征在于，所述方法包括：
    通过总线对车载电脑控制器的喇叭控制指令进行收发；
    根据所述喇叭控制指令，生成符合当前场景的喇叭发声信号；
    根据所述喇叭发声信号进行发声。
  9. 根据权利要求8所述的方法，其特征在于，所述根据所述喇叭控制指 令，生成符合当前场景的喇叭发声信号之后还包括：对所述喇叭发声信号解码的目标信号进行功率放大；
    所述根据所述喇叭发声指令进行发声具体包括：根据功率放大后的所述喇叭发声信号解码的目标信号进行发声；
    所述喇叭发声信号包括：保证行车安全的汽车呜叫喇叭发声信号；驻车时车辆上锁提示音喇叭发声信号；驻车时车辆防盗报警用的警报声喇叭发声信号；倒车的警示音喇叭发声信号；车辆转向提示音喇叭发声信号；行李箱开关时用的提示音喇叭发声信号；防撞雷达报警喇叭发声信号；电动车行车模拟音喇叭发声信号。
  10. 根据权利要求8所述的方法，其特征在于，所述总线具体包括：CAN总线或LIN总线。
PCT/CN2016/081687 2016-05-11 2016-05-11 一种利用总线控制多用途喇叭的方法和电路 WO2017193301A1 (zh)

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