WO2019153526A1 - 用于车辆的车载警示音装置以及车载警示音设备 - Google Patents

用于车辆的车载警示音装置以及车载警示音设备 Download PDF

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Publication number
WO2019153526A1
WO2019153526A1 PCT/CN2018/084561 CN2018084561W WO2019153526A1 WO 2019153526 A1 WO2019153526 A1 WO 2019153526A1 CN 2018084561 W CN2018084561 W CN 2018084561W WO 2019153526 A1 WO2019153526 A1 WO 2019153526A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
horn
warning sound
sound device
single chip
Prior art date
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PCT/CN2018/084561
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English (en)
French (fr)
Inventor
许广振
严国进
胡卫诚
秦晋
宋晓珏
刘建梅
黄剑龙
Original Assignee
上海实业交通电器有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 上海实业交通电器有限公司 filed Critical 上海实业交通电器有限公司
Priority to EP18887204.8A priority Critical patent/EP3546292A4/en
Priority to JP2019535376A priority patent/JP2021513479A/ja
Priority to US16/475,229 priority patent/US20210031685A1/en
Publication of WO2019153526A1 publication Critical patent/WO2019153526A1/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
    • 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
    • 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
    • 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
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • 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
    • G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
    • G10K9/20—Sounding members

Definitions

  • the present application relates to a warning device, and in particular to a warning device for a vehicle.
  • Conventional vehicle horns are widely used as warning devices for vehicles. During the running of the vehicle, the driver presses the horn of the vehicle as needed, and emits an audible signal as a warning tone to warn pedestrians and cause attention to surrounding vehicles. However, such a car horn sound can cause problems such as aversion of pedestrians.
  • New energy vehicles driven by electric motors are widely optimistic because of their relatively small environmental impact compared to conventional vehicles.
  • new energy vehicles are almost silent when driven by electric motors. This silent exercise condition makes it impossible for the driver to directly feel the speed of the vehicle, and at the same time, it cannot remind the passers-by that there is a potential danger.
  • OEMs install sound source devices that simulate noise in the motor compartment for safety reasons.
  • such an approach has many problems such as high requirements on the analog noise device itself, increased cost, and complicated installation.
  • the present application proposes a vehicle-mounted warning sound device for a vehicle, and the vehicle-mounted warning sound device according to the present application has a simple structure, is easy to install, operate, and maintain.
  • an in-vehicle warning sound device for a vehicle characterized in that the on-board warning sound device comprises:
  • a horn assembly including a horn coil assembly and a horn horn coupled to the horn coil assembly;
  • control unit coupled to the horn assembly, the control unit configured to generate a sound intensity control signal based on a current state of the vehicle and an environment surrounding the vehicle and to control the horn assembly based on the sound intensity control signal A horn warning tone is emitted.
  • the horn coil assembly and the control unit are disposed in a housing of the vehicle-mounted warning sound device, the housing is a waterproof housing, and the horn is fixed to the housing On the end face of the body.
  • control unit includes a single chip microcomputer and a bus interface connected to the single chip microcomputer, the bus interface is located on the housing and connected to a body controller of the vehicle, and the single chip microcomputer passes through the bus An interface receives a current status signal indicative of a current state of the vehicle from the body controller.
  • the microcontroller generates the sound intensity control signal according to the current state signal and an environment surrounding the vehicle, the current state of the vehicle including: current vehicle speed, reverse state, tailgate state, and charging In the state, the surrounding environment of the vehicle includes weather, lighting, road conditions, and an area in which the vehicle travels.
  • the horn coil assembly includes an electromagnetic coil including a fixed iron core and a vibrating diaphragm including a moving iron core, the horn assembly further including a driving circuit, the driving circuit and the electromagnetic coil and the
  • the single chip microcomputer is electrically connected, and the single chip microcomputer controls a duty ratio for driving the electromagnetic coil to be turned on according to the sound intensity control signal, thereby adjusting a sound intensity of the speaker warning sound.
  • the horn assembly further includes a protection circuit electrically coupled to the drive circuit to protect the drive circuit.
  • the microcontroller, the drive circuit, and the protection circuit are located on the same circuit board in the housing.
  • an in-vehicle warning sound device for a vehicle comprising:
  • a horn assembly including a horn coil assembly and a horn horn coupled to the horn coil assembly;
  • a speaker disposed to be independent of the horn assembly
  • a control unit coupled to the horn assembly and the speaker, the control unit configured to generate a sound intensity control signal based on a current state of the vehicle and an environment surrounding the vehicle and control based on the sound intensity control signal
  • the horn assembly emits a horn alert tone and is configured to generate an engine analog sound signal based on the current state of the vehicle and to control the speaker to emit an engine simulated alert tone based on the engine analog sound signal.
  • the horn coil assembly and the control unit are located in a first housing of the vehicle-mounted warning sound device, the speaker being located in a second housing of the vehicle-mounted warning sound device, the The second housing is independent of the first housing.
  • control unit includes a single chip microcomputer having a storage unit that stores engine analog sound data, the engine analog sound data corresponding to a vehicle speed of the vehicle. .
  • control unit includes a bus interface located on the first housing and coupled to a body controller of the vehicle.
  • the microcontroller is electrically coupled to the bus interface to receive a current status signal from the body controller indicating the current state of the vehicle via the bus interface.
  • the microcontroller generates the sound intensity control signal according to the current state signal and an environment surrounding the vehicle, the current state of the vehicle including: current vehicle speed, reverse state, tailgate state, and charging In the state, the environment of the vehicle includes weather, lighting, road conditions, and an area in which the vehicle travels.
  • the microcontroller has a processing unit coupled to the memory unit and the bus interface, the processing unit being configured to be stored in accordance with a current status signal received from the bus interface
  • the engine in the storage unit simulates sound data to determine an engine analog sound signal corresponding to the current state.
  • the horn assembly further includes an audio drive circuit coupled to the microcontroller and the speaker, and amplifying the engine analog sound signal received from the microcontroller, The speaker emits the engine simulated warning tone based on the amplified engine analog sound signal.
  • a socket is disposed on the second housing, the speaker being electrically coupled to the audio drive circuit through the socket.
  • the horn coil assembly includes a solenoid having a fixed core and a diaphragm including a moving iron core, the horn assembly further including a drive circuit.
  • the driving circuit is electrically connected to the electromagnetic coil and the single chip microcomputer.
  • the single chip microcomputer controls a duty ratio for driving the electromagnetic coil to be turned on according to the sound intensity control signal, thereby adjusting a sound intensity of the horn warning sound.
  • the horn assembly further includes a protection circuit electrically coupled to the drive circuit to protect the drive circuit.
  • the microcontroller, the drive circuit, the protection circuit, and the audio drive circuit are located on the same circuit board in the first housing.
  • the first housing is a waterproof housing
  • the second housing is a splash-proof housing
  • a sealing structure such as a sealing ring
  • the warning function for the vehicle is realized with a simple structure and at a low cost.
  • the vehicle warning sound device and the vehicle warning sound device of the present application are convenient for installation, use, and test maintenance, and have a wider application and a better user experience.
  • FIG. 1 shows a block diagram of an in-vehicle warning sound device for a vehicle in accordance with an embodiment of the present application.
  • FIG. 2A-2F are diagrams showing an overall structure of a vehicle-mounted warning sound device for a vehicle according to an embodiment of the present application, wherein FIG. 2A is a front view thereof; FIG. 2B is a bottom view thereof; FIG. 2C is a plan view thereof; 2D is its right side view; FIG. 2E is its left side view, and FIG. 2F is a cross-sectional view taken along line AA of FIG. 2A.
  • FIG. 3 illustrates a block diagram of an in-vehicle warning tone device for a vehicle in accordance with an embodiment of the present application.
  • FIG. 4A-4E are diagrams showing an overall structure of an in-vehicle warning sound device for a vehicle according to an embodiment of the present application, wherein FIG. 4A is a front view thereof; FIG. 4B is a bottom view thereof; FIG. 4C is a plan view thereof; 4D is its right view; FIG. 4E is its left view.
  • FIG. 5A-5G are schematic views showing a part of the structure of an in-vehicle warning sound device according to an embodiment of the present application, wherein FIG. 5A is a front view thereof; FIG. 5B is a bottom view thereof; FIG. 5C is a plan view thereof; FIG. Right side view; Fig. 5E is a left side view thereof; Fig. 5F is a rear view thereof; Fig. 5G is a cross-sectional view taken along line BB of Fig. 5A.
  • the present application generally relates to a vehicle warning sound device and a vehicle warning sound device for a vehicle.
  • the vehicle includes a quiet vehicle that hardly produces sound while the vehicle is running, such as an electric vehicle, a hybrid vehicle, or the like.
  • the engine simulation sound refers to the engine sound of the conventional vehicle in the state of running, acceleration and deceleration, etc., for the above quiet vehicle.
  • the engine simulation sound data is analog sound data representing an engine of a conventional fuel vehicle corresponding to the same state of the vehicle (for example, the same vehicle speed).
  • the engine analog sound signal is an analog sound signal representing a conventional fuel vehicle engine corresponding to the same vehicle speed of the vehicle.
  • FIG. 1 shows a block diagram of an in-vehicle warning sound device for a vehicle in accordance with an embodiment of the present application.
  • the vehicle warning sound device 100 includes a horn assembly 110 and a control unit 120.
  • the horn assembly 110 includes a horn coil assembly 114 and a horn horn 112 coupled to the horn coil assembly 114.
  • the control unit 120 is coupled to the horn assembly 110.
  • the control unit 120 and the horn assembly 110 are packaged in the housing 10 of the vehicle warning sound device 100.
  • the housing 10 is, for example, a waterproof housing.
  • the horn horn 112 is fixed to one end surface of the casing 10.
  • control unit 120 includes a microcontroller 122 and a bus interface 124 coupled to microcontroller 122.
  • the bus interface 124 is coupled to the body controller 130.
  • the body controller 130 includes a plurality of sensors. For example, a sensor for sensing the current state of the vehicle (eg, a vehicle speed sensor, a tailgate sensor, etc.). In one example, the vehicle can also access a network, such as a GPS network, to sense the area in which the vehicle is located.
  • the microcontroller 122 acquires a current status signal indicative of the current state of the vehicle from the body controller 130 via the bus interface 124. And, the single chip microcomputer 122 acquires information indicating the environment around the vehicle.
  • the current state of the vehicle includes, for example, a vehicle start state, a vehicle travel state (eg, average speed, acceleration and deceleration, etc.), a tailgate state, a state of charge, and a reverse state.
  • the environment around the vehicle includes, for example, weather, lighting, road conditions, and a traveling area of the vehicle.
  • the single chip microcomputer 122 generates a sound intensity control signal S1 according to the current state of the vehicle and the environment around the vehicle.
  • the horn assembly 110 generates a horn warning tone under the control of the sound intensity control signal S1.
  • the horn warning tone is emitted through the horn horn 112.
  • the vehicle warning sound device 100 emits a horn warning sound of the corresponding sound intensity according to the current state of the vehicle and the environment around the vehicle. For example, if the vehicle speed is high and the vehicle is driving during the day, the sound intensity of the corresponding horn warning tone is large. Conversely, if the vehicle speed is low and the vehicle is driving at night, the corresponding horn warning tone has a lower sound intensity. For example, if the vehicle is driving in a mountainous area or a dangerous area, the sound intensity of the horn warning sound is large, and the vehicle is traveling in the urban area, and the sound intensity of the horn warning sound is small or prohibited.
  • the onboard warning tone device 100 can emit a horn alert tone of a predetermined level of sound intensity depending on the region in which the vehicle is located. It should be understood that the sound intensity of the horn alert tone can be suitably set and changed depending on the particular application.
  • the horn coil assembly 114 includes an electromagnetic coil including a fixed iron core and a vibration diaphragm including a moving iron core.
  • the sound intensity control signal S1 is, for example, a switching signal that controls the frequency at which the electromagnetic coil and the movable iron core and the vibrating diaphragm in the assembly are sucked and released, thereby adjusting the horn by adjusting the duty ratio of the horn coil conduction.
  • the horn assembly 110 also includes a drive circuit 118.
  • the drive circuit 118 is electrically connected to the electromagnetic coil and the single chip microcomputer 122.
  • the single chip microcomputer 122 controls the duty ratio of the electromagnetic coil to be turned on according to the calculated sound intensity control signal S1 (for example, a switching signal).
  • the duty ratio of the sound intensity control signal S1 is large, so that the horn warning sound emitted by the vehicle is large.
  • the duty ratio of the sound intensity control signal S1 is small, so that the horn warning sound emitted by the vehicle is small.
  • the relationship between the intensity of the horn sound and the surrounding environment can be set according to the specific application situation.
  • the horn assembly 110 further includes a protection circuit 116 that is electrically coupled to the drive circuit 118 to protect the drive circuit 118.
  • the microcontroller 122, the drive circuit 118, and the protection circuit 116 are located on the same circuit board B in the housing 10.
  • the horn coil assembly 114 is electrically connected to the circuit board through leads L.
  • the arrangement of these components may also be implemented in other suitable manners depending on the specific application scenario, and is not limited thereto.
  • one or more of the microcontroller 122, the driver circuit 118, and the protection circuit 116 are located on different boards depending on the particular application environment.
  • the vehicle-mounted warning sound device of the present application can be used in a vehicle to emit an intelligent horn warning sound, and the sound intensity of the horn warning sound can be adjusted according to the current vehicle condition of the vehicle and the specific environment in which the vehicle is located. It is sufficient to warn the pedestrians and vehicles around the vehicle, and to adapt to the specific scene in which the vehicle is located, while improving the user experience of the vehicle driver.
  • FIG. 3 illustrates a block diagram of an in-vehicle warning tone device for a vehicle in accordance with an embodiment of the present application.
  • the in-vehicle warning sound device 300 includes a speaker assembly 310, a control unit 320, and a speaker 330.
  • the horn assembly 310 includes a horn coil assembly 314 and a horn horn 312 coupled to the horn coil assembly 314.
  • the control unit 320 is coupled to the horn assembly 310 and the speaker 330, respectively.
  • the control unit 320 generates a sound intensity control signal S1 according to the current state of the vehicle and the environment around the vehicle.
  • the horn assembly 310 generates a horn warning tone under the control of the sound intensity control signal S1.
  • the horn assembly 310 can be implemented in the same configuration as the horn assembly 110 described above.
  • the working principle of the intelligent horn warning sound that the vehicle warning sound device 300 emits variable sound intensity is the same as that described above, and the description will not be repeated here.
  • the control unit 320 generates an engine analog sound signal S2 according to the current state of the vehicle.
  • the speaker 330 emits an engine analog warning tone based on the engine analog sound signal S2 received from the control unit 320.
  • the engine analog warning tone refers to the engine analog sound as described above.
  • the use of the vehicle-mounted warning sound device of the present application in a quiet vehicle can emit an intelligent horn warning sound and an engine simulating warning sound, which can serve as a warning for pedestrians and vehicles around the vehicle, and at the same time improve the driver of the vehicle. User experience.
  • the horn coil assembly 314 and the control unit 320 are disposed in the first housing 30 of the in-vehicle warning sound device 300.
  • the horn horn 312 is fixedly coupled to the first housing 30, for example, the horn 312 is fixed to the surface of the first housing 30.
  • the speaker 330 is disposed in the second housing 32 of the in-vehicle warning sound device 300.
  • the first housing 30 is, for example, a circular housing
  • the second housing 32 is, for example, a rectangular housing.
  • the first housing 30 and the second housing 32 may also adopt other suitable patterns depending on the actual application.
  • the first housing 30 is independent of the second housing 32 for mounting at different locations in the vehicle, respectively.
  • the speaker 330 is disposed in the second casing 32 independent of the first casing 30 by arranging the main body portion including the control portion and the horn portion in the first casing 30,
  • main body portion including the control portion and the horn portion in the first casing 30.
  • different national standards for speakers and speakers can be implemented separately, reducing product costs.
  • control unit 320 includes a microcontroller 332 and a bus interface 334.
  • the microcontroller 332 is coupled to the body controller 340 of the vehicle via a bus interface 334.
  • the control unit 320 of the in-vehicle warning sound device 300 is similar in structure to the control unit 120 of the in-vehicle warning tone device 100, and differs mainly in that the microcontroller 322 of the control unit 320 further performs data processing.
  • the memory unit of the single chip microcomputer 322 stores engine analog sound data corresponding to various states of the vehicle, and the processor of the single chip microcomputer 322 performs data processing using the stored engine analog sound data.
  • the onboard alert tone device 300 also includes a memory (not shown) external to the microcontroller 322 that stores alternate engine analog sound data.
  • the various states in which the vehicle is located correspond to the respective engine states.
  • the state of the vehicle includes, for example, a vehicle start state, an acceleration/deceleration state, a different vehicle speed state, a reverse state, a tailgate state, a state of charge, and the like, but is not limited thereto.
  • a vehicle body controller 340 of the vehicle is connected with a plurality of sensors for measuring vehicle conditions.
  • the plurality of sensors include, for example, a vehicle speed sensor that measures a current traveling speed of the vehicle.
  • the vehicle speed sensor transmits the measured current vehicle speed to the body controller 340.
  • the body controller 340 transmits a current vehicle speed to the microcontroller 332 via the bus interface 334.
  • the current vehicle speed signal indicates the current state of the vehicle, ie, the current state signal is the current vehicle speed signal that was acquired. It should be understood that the current status signal of the vehicle may also be other signals, such as a reverse signal, a tailgate signal, and the like.
  • the single chip microcomputer 332 outputs a corresponding engine analog sound signal according to the monitored current state signal.
  • the current status signal is a signal indicating the idle state
  • the single chip microcomputer 332 outputs an engine sound simulating the idle state of the conventional fuel vehicle, that is, an engine-started analog sound corresponding to the vehicle idle state.
  • the processing unit of the microcontroller 322 calculates an engine analog sound signal corresponding to the current state of the vehicle indicated by the current state signal based on the current state signal received from the bus interface 324 and the engine analog sound data stored in the storage unit. For example, a plurality of engine analog sound data are stored in a storage unit of the single chip microcomputer 322. The processing unit of the microcontroller 322 uses the stored one or more engine analog sound data to calculate an engine analog sound signal corresponding to the current state signal. This operation uses, for example, an interpolation operation. Of course, other suitable calculation methods may be employed depending on the specific situation. Thereby, an engine analog sound signal corresponding to the real-time continuous state of the vehicle can be obtained from the stored limited number of analog sound data.
  • a plurality of engine analog sound data is stored in a memory unit of the microcontroller 322.
  • the plurality of engine analog sound data includes engine analog sound data D1, D2, D3, wherein D1 - D3 respectively correspond to engine simulated sounds of one vehicle traveling state.
  • the processing unit of the single chip microcomputer 322 calculates the simulated sound data corresponding to the current state signal by using the engine analog sound data D1-D3 stored in the memory according to the current state signal. D4. Then, the microcontroller 322 converts the calculated analog sound data D4 into a corresponding engine analog sound signal S2 and outputs the engine analog sound signal S2.
  • the onboard warning tone device 300 also includes an audio driver circuit 352.
  • the audio drive circuit 352 is connected to the single chip microcomputer 322, and amplifies the engine analog sound signal S2 output from the single chip microcomputer 322.
  • a socket 354 is disposed on the second housing 32, and a socket 324 is disposed on the first housing 30.
  • the socket 354 of the second housing 32 is electrically connected to the socket 324 of the first housing 30.
  • the socket 354 is a 2-pin type socket
  • the socket 324 is a 7-pin type socket and two of the pins are connected to the two pins of the socket 354.
  • the socket 324 and the socket 354 can also be connected in other manners by using other styles of sockets.
  • the speaker 330 receives the amplified engine analog sound signal S2 from the audio drive circuit 352 through the outlet 354 and emits the corresponding engine analog sound.
  • the surface of the second housing 32 e.g., the back of the housing 32
  • the second housing 32 is a splash-proof housing, and a sealing structure 362 is disposed between the speaker 330 and the second housing 32.
  • the speaker 330 itself is also waterproof.
  • the sealing structure 362 is, for example, a sealing ring.
  • the sealing structure 362 can also be implemented in other suitable manners.
  • the horn assembly 310 further includes a protection circuit 316 that is electrically coupled to the drive circuit 318 to protect the drive circuit 318.
  • the microcontroller 332, the driver circuit 318, the protection circuit 316, and the audio driver circuit 352 are located on the same circuit board in the first housing 30.
  • the horn coil assembly 314 is connected to the circuit board by leads.
  • the arrangement of these components may also be implemented in other suitable manners depending on the specific application scenario, and is not limited thereto.
  • one or more of the microcontroller 332, the driver circuit 318, the protection circuit 316, and the audio driver circuit 352 are located on different circuit boards, depending on the particular application environment.
  • the first housing 30 is a waterproof housing.
  • the horn of the vehicle is not affected in an environment such as heavy rain that causes it to immerse in water.
  • the vehicle horn body can meet the waterproof test standard for the horn of the vehicle, and has a wide range of applications.
  • the on-vehicle warning sound device of the present application it is possible to emit a sound audible warning sound according to the current condition of the vehicle and the environment around the vehicle, and to emit a corresponding engine simulation sound according to the current state of the vehicle.
  • the vehicular horn and the control portion and the speaker are respectively located in different housings, thereby facilitating installation and test maintenance, and at the same time reducing costs due to being able to separately meet different test standards. Therefore, the vehicle warning sound device of the present application realizes the function of warning pedestrians and surrounding vehicles at a low cost and a simple structure, and also improves the user experience, and has a wide range of applications.

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  • Acoustics & Sound (AREA)
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Abstract

本申请提供一种用于车辆的车载警示音设备，其包括：喇叭组件，所述喇叭组件包括喇叭线圈组件和与所述喇叭线圈组件连接的喇叭号筒；扬声器，所述扬声器被设置为独立于所述喇叭组件；以及控制单元，所述控制单元分别与所述喇叭组件和所述扬声器连接，并且被配置为根据所述车辆的当前状态和所述车辆周围的环境来产生声强控制信号并基于所述声强控制信号控制所述喇叭组件发出所述喇叭警示音，以及被配置为根据所述车辆的所述当前状态来产生发动机模拟声音信号并基于所述发动机模拟声音信号控制所述扬声器发出所述发动机模拟警示音。

Description

用于车辆的车载警示音装置以及车载警示音设备 技术领域
本申请涉及一种警告设备，具体而言，涉及一种用于车辆的警告设备。
背景技术
传统的车辆喇叭作为用于车辆的警告设备而被广泛采用。在车辆的行驶过程中，驾驶员根据需要按响车辆喇叭，发出声响讯号作为警示音，以便警告行人和引起周围车辆注意。但是，这样的汽车喇叭声音存在会引起行人的厌恶等问题。
由电动机驱动的新能源车辆由于对环境的影响相对传统车辆较小，其前景被广泛看好。但是，新能源车辆在由电动机驱动而行驶的时候几乎是无声的。这种无声的行使状况使得驾驶员无法直接感受到车速车况，同时也无法提醒路人注意，存在潜在的危险。目前，整车厂为了安全考虑而在电动机舱里加装模拟噪音的声源装置。但是，这样的做法存在对模拟噪音装置本身要求较高，增加成本，安装复杂等诸多问题。
因此，亟需一种用于车辆的警告设备，以克服现有技术中存在的缺陷。
发明内容
鉴于上述问题，本申请提出了一种用于车辆的车载警示音设备，根据本申请的车载警示音设备结构简单、便于安装、操作和维护。
为此，根据本申请的一个方面，提供了一种用于车辆的车载警示音装置，其特征在于，所述车载警示音装置包括：
喇叭组件，所述喇叭组件包括喇叭线圈组件和与所述喇叭线圈组件连接的喇叭号筒；以及
控制单元，与所述喇叭组件连接，所述控制单元被配置为根据所述车辆的当前状态和所述车辆周围的环境来产生声强控制信号并基于所述声强控制信号控制所述喇叭组件发出喇叭警示音。
在一个实施例中，所述喇叭线圈组件和所述控制单元被设置在所述车载警示音设备的壳体中，所述壳体是防水的壳体，所述喇叭号筒被固定在 所述壳体的端面上。
在一个实施例中，所述控制单元包括单片机和与所述单片机连接的总线接口，所述总线接口位于所述壳体上并与所述车辆的车身控制器连接，所述单片机通过所述总线接口从所述车身控制器接收指示所述车辆的当前状态的当前状态信号。
在一个实施例中，所述单片机根据所述当前状态信号和所述车辆周围的环境来产生所述声强控制信号，所述车辆的当前状态包括：当前车速、倒车状态、尾门状态和充电状态，所述车辆的周围环境包括天气、照明、路况、所述车辆行驶的区域。
在一个实施例中，所述喇叭线圈组件包括含定铁芯的电磁线圈和含动铁芯的振动膜片，所述喇叭组件还包括驱动电路，所述驱动电路与所述电磁线圈和所述单片机电连接，所述单片机根据所述声强控制信号来控制驱动所述电磁线圈导通的占空比，从而调节所述喇叭警示音的声音强度。
在一个实施例中，所述喇叭组件还包括保护电路，所述保护电路与所述驱动电路电连接，以对所述驱动电路进行保护。
在一个实施例中，所述单片机、所述驱动电路和所述保护电路位于所述壳体中的同一电路板上。
根据本申请的另一个方面，提供了一种用于车辆的车载警示音设备，其包括：
喇叭组件，所述喇叭组件包括喇叭线圈组件和与所述喇叭线圈组件连接的喇叭号筒；
扬声器，被设置为独立于所述喇叭组件；以及
控制单元，与所述喇叭组件和所述扬声器连接，所述控制单元被配置为根据所述车辆的当前状态和所述车辆周围的环境来产生声强控制信号并基于所述声强控制信号控制所述喇叭组件发出喇叭警示音，并且被配置为根据所述车辆的所述当前状态来产生发动机模拟声音信号并基于所述发动机模拟声音信号控制所述扬声器发出发动机模拟警示音。
在一个实施例中，所述喇叭线圈组件和所述控制单元位于所述车载警示音设备的第一壳体中，所述扬声器位于所述车载警示音设备的第二壳体中，所述第二壳体独立于所述第一壳体。
在一个实施例中，所述控制单元包括单片机，所述单片机具有存储单元，所述存储单元存储有发动机模拟声音数据，所述发动机模拟声音数据对应于所述车辆的车速。。
在一个实施例中，所述控制单元包括总线接口，所述总线接口位于所述第一壳体上并与所述车辆的车身控制器连接。
在一个实施例中，所述单片机与所述总线接口电连接，以通过所述总线接口从所述车身控制器接收指示所述车辆的当前状态的当前状态信号。
在一个实施例中，所述单片机根据所述当前状态信号和所述车辆周围的环境来产生所述声强控制信号，所述车辆的当前状态包括：当前车速、倒车状态、尾门状态和充电状态，所述车辆的环境包括天气、照明、路况、所述车辆行驶的区域。
在一个实施例中，所述单片机具有处理单元，所述处理单元与所述存储单元和所述总线接口连接，所述处理单元被配置为根据从所述总线接口接收的当前状态信号和存储在所述存储单元中的发动机模拟声音数据，来确定与所述当前状态相对应的发动机模拟声音信号。
在一个实施例中，所述喇叭组件还包括音频驱动电路，所述音频驱动电路与所述单片机和所述扬声器连接，并将从所述单片机接收的所述发动机模拟声音信号进行放大，所述扬声器根据经放大的发动机模拟声音信号发出所述发动机模拟警示音。
在一个实施例中，在所述第二外壳上设置有插座，所述扬声器通过所述插座与所述音频驱动电路电连接。
在一个实施例中，所述喇叭线圈组件包括含定铁芯的电磁线圈和含动铁芯的振动膜片，所述喇叭组件还包括驱动电路。所述驱动电路与所述电磁线圈和所述单片机电连接。所述单片机根据所述声强控制信号来控制驱动所述电磁线圈导通的占空比，从而调节所述喇叭警示音的声音强度。
在一个实施例中，所述喇叭组件还包括保护电路，所述保护电路与所述驱动电路电连接，以对所述驱动电路进行保护。
在一个实施例中，所述单片机、所述驱动电路、所述保护电路和所述音频驱动电路位于所述第一壳体中的同一电路板上。
在一个实施例中，所述第一壳体是防水壳体，所述第二壳体是防水溅 壳体，所述扬声器与所述第二壳体之间设置有密封结构，例如密封圈。
根据本申请的车载警示音装置以及车载警示音设备，其以简单的结构和较低的成本实现了用于车辆的警告功能。并且，本申请的车载警示音装置和车载警示音设备便于安装、使用以及测试维护，具有更广泛的应用和更佳的用户体验。
附图说明
下面将根据具体实施方式并且结合附图来更彻底地理解并认识本申请的上述和其它方面，在附图中：
图1示出了根据本申请的实施例的用于车辆的车载警示音装置的方框图。
图2A-2F示出了根据本申请的实施例的用于车辆的车载警示音装置的整体结构示意图，其中，图2A是其主视图；图2B是其仰视图；图2C是其俯视图；图2D是其右视图；图2E是其左视图，图2F是沿着图2A的A-A线的截面图。
图3示出了根据本申请的实施例的用于车辆的车载警示音设备的方框图。
图4A-4E示出了根据本申请的实施例的用于车辆的车载警示音设备的整体结构示意图，其中，图4A是其主视图；图4B是其仰视图；图4C是其俯视图；图4D是其右视图；图4E是其左视图。
图5A-5G示出了根据本申请的实施例的车载警示音设备的一部分结构的示意图，其中，图5A是其主视图；图5B是其仰视图；图5C是其俯视图；图5D是其右视图；图5E是其左视图；图5F是其后视图；图5G是沿着图5A中的B-B线的截面图。
具体实施方式
现在参照附图来描述本申请的一些实施方式。
本申请总体上涉及用于车辆的车载警示音装置和车载警示音设备。在本申请中，车辆包括在车辆行驶中几乎不产生声音的安静车辆，例如，电动车，混合动力车等。发动机模拟声音是指对于上述安静车辆，模拟常规 燃油车辆在行驶、加减速等状态下的发动机声音。发动机模拟声音数据是表示与车辆的相同状态(例如，相同车速)相对应的、传统燃油车辆的发动机的模拟声音数据。发动机模拟声音信号是表示与车辆的相同车速相对应的、传统燃油车辆发动机的模拟声音信号。
图1示出了根据本申请的实施例的用于车辆的车载警示音装置的方框图。如图1所示，车载警示音装置100包括喇叭组件110和控制单元120。喇叭组件110包括喇叭线圈组件114和与喇叭线圈组件114连接的喇叭号筒112。控制单元120与喇叭组件110连接。参见图2A，控制单元120和喇叭组件110被封装在车载警示音设备100的壳体10中。该壳体10例如是防水的壳体。这样，当车载警示音设备100处于浸入水中的环境的情况下，车载警示音设备100也不会被损坏。喇叭号筒112被固定在壳体10的一个端面上。
继续参见图1，控制单元120包括单片机122和与单片机122连接的总线接口124。总线接口124与车身控制器130连接。车身控制器130包括多个传感器。例如，用于感测车辆的当前状态的传感器(例如，车速传感器，尾门传感器等)。在一个实例中，车辆还可以接入网络，例如，GPS网络，从而感测车辆所处的区域。单片机122通过总线接口124从车身控制器130获取指示车辆的当前状态的当前状态信号。并且，单片机122获取指示车辆周围环境的信息。车辆的当前状态例如包括：车辆启动状态、车辆行驶状态(例如，均速、加减速等)、尾门状态、充电状态以及倒车状态等。车辆周围的环境例如包括：天气、照明、路况、以及车辆的行驶区域等。单片机122根据车辆的当前状态和车辆周围的环境来产生声强控制信号S1。喇叭组件110在声强控制信号S1的控制下产生喇叭警示音。该喇叭警示音通过喇叭号筒112发出。
以下，结合附图来具体说明根据本申请的车载警示音装置发出可变声强的智能型喇叭警示音的工作原理。
车载警示音设备100根据车辆的当前状态和车辆周围的环境发出相应声强的喇叭警示音。例如，车速较高，车辆在白天行驶，则相应的喇叭警 示音的声音强度较大。相反，车速较低，车辆在夜间行驶，则相应的喇叭警示音的声音强度较小。例如，车辆行驶在山区或危险区域，喇叭警示音的声音强度较大，车辆行驶在市区，喇叭警示音的声音强度较小或被禁音。在一个实施例中，车载警示音设备100可以根据车辆所处的区域发出预定等级的声音强度的喇叭警示音。应当理解，喇叭警示音的声音强度可以根据具体应用而作出适合的设置和改变。
喇叭线圈组件114包括含定铁芯的电磁线圈和含动铁芯的振动膜片。声强控制信号S1例如是开关信号，该开关信号控制电磁线圈与组件中的动铁芯以及振动膜片的吸合和松开的频率，从而通过调整喇叭线圈导通的占空比来调整喇叭发出的声音强度。喇叭组件110还包括驱动电路118。驱动电路118与电磁线圈和单片机122电连接。单片机122根据计算出来的声强控制信号S1(例如，开关信号)来控制电磁线圈导通的占空比。占空比越大，车辆喇叭警示音的声音强度越大。例如，在车速较大，路况危险的情况下，声强控制信号S1的占空比较大，从而使得车辆发出的喇叭警示音较大。相反，在夜间光强较弱，车速较低的情况下，声强控制信号S1的占空比较小，从而使得车辆发出的喇叭警示音较小。例如，车辆行驶在山区，喇叭警示音的声音强度较大，车辆行驶在市区，喇叭警示音较小或被禁音。应当理解，喇叭声音强度与周围环境的关系可以根据具体应用情形来设置。
在一个实例中，喇叭组件110还包括保护电路116，保护电路116与驱动电路118电连接，以对驱动电路118进行保护。
在一个实施例中，如图2F所示，单片机122、驱动电路118和保护电路116位于壳体10中的同一电路板B上。喇叭线圈组件114与该电路板通过引线L电连接。当然，根据具体应用场景，这些部件的布置也可以以其他适合的方式来实现，不限于此。例如，根据具体应用环境，单片机122、驱动电路118、保护电路116中的一个或多个位于不同的电路板上。
由此可见，在车辆中采用本申请的车载警示音装置，能够发出智能型的喇叭警示音，该喇叭警示音的声音强度能够根据车辆的当前车况和车辆所处的具体环境而调节，起到了够警示车辆周围的行人和车辆的作用，又与车辆所处的具体场景相适应，同时提高了车辆驾驶员的用户体验。
图3示出了根据本申请的实施例的用于车辆的车载警示音设备的方框图。如图3所示，车载警示音设备300包括喇叭组件310，控制单元320和扬声器330。喇叭组件310包括喇叭线圈组件314和与喇叭线圈组件314连接的喇叭号筒312。控制单元320分别与喇叭组件310和扬声器330连接。
控制单元320根据车辆的当前状态和车辆周围的环境来产生声强控制信号S1。喇叭组件310在声强控制信号S1的控制下产生喇叭警示音。这里，喇叭组件310可以以与上述喇叭组件110相同的构造方式来实现。车载警示音设备300发出可变声强的智能型喇叭警示音的工作原理与上述描述相同，这里不再重复描述。
控制单元320根据车辆的当前状态来产生发动机模拟声音信号S2。扬声器330基于从控制单元320接收的发动机模拟声音信号S2发出发动机模拟警示音。该发动机模拟警示音是指如上所述的发动机模拟声音。
由此可见，在安静车辆中采用本申请的车载警示音设备，能够发出智能型的喇叭警示音和发动机模拟警示音，起到了够警示车辆周围的行人和车辆的作用，同时提高了车辆驾驶员的用户体验。
如图3和图4A所示，喇叭线圈组件314和控制单元320被设置在车载警示音设备300的第一壳体30中。喇叭号筒312与第一壳体30固定连接，例如，喇叭号筒312被固定在第一壳体30的表面上。如图5A所示，扬声器330被设置在车载警示音设备300的第二壳体32中。如图4A所示，第一壳体30例如是圆形壳体，并且第二壳体32例如是长方形壳体。当然，第一壳体30和第二壳体32也可以根据实际应用而采用其他适合的样式。第一壳体30独立于第二壳体32，以便分别安装在车辆中的不同的位置。
根据本申请的车载警示音设备，通过将包括控制部分和喇叭部分的主体部分设置在第一壳体30中，将扬声器330设置在独立于第一壳体30的第二壳体32中，有诸多优点。例如，能够分别实现针对扬声器和喇叭的不同国家标准，降低了产品成本。并且，由于采取两个独立壳体的形式，在安装和检修方面也更加便利。
以下，结合附图来具体说明根据本申请的车载警示音设备300发出发动机模拟警示音的工作原理。
参考图3，控制单元320包括单片机332和总线接口334。单片机332通过总线接口334与车辆的车身控制器340连接。车载警示音设备300的控制单元320与车载警示音装置100的控制单元120在结构上相似，它们不同之处主要在于控制单元320的单片机322进一步进行数据处理。例如，单片机322的存储单元存储有与车辆的多种状态相对应的发动机模拟声音数据，单片机322的处理器采用所存储的发动机模拟声音数据来进行数据处理。在一个实例中，车载警示音设备300还包括位于单片机322外部的存储器(未示出)，其存储有备选的发动机模拟声音数据。这里，车辆所处的各种状态对应于相应的发动机状态。车辆的状态例如包括：车辆启动状态、加减速状态、不同车速状态、倒车状态、尾门状态、充电状态等，但不限于此。车辆的车身控制器340连接有用于测量车况的多个传感器。该多个传感器例如包括测量车辆的当前行驶速度的车速传感器。该车速传感器将所测得的当前车速传送给车身控制器340。车身控制器340通过总线接口334将当前车速传送信号给单片机332。该当前车速信号表示车辆的当前状态，即当前状态信号是所采集的当前车速信号。应当理解，车辆的当前状态信号还可以是其他信号，例如，倒车信号，尾门信号等。单片机332根据监测的当前状态信号输出相应的发动机模拟声音信号。例如，当前状态信号是指示怠速状态的信号，则单片机332输出模拟传统燃油车辆在怠速状态下的发动机声音，即与车辆怠速状态相对应的发动机启动的模拟声音。
单片机322的处理单元根据从总线接口324所接收的当前状态信号和存储在存储单元中的发动机模拟声音数据来计算与该当前状态信号所指示的车辆当前状态相对应的发动机模拟声音信号。例如，单片机322的存储单元中存储有多个发动机模拟声音数据。单片机322的处理单元采用所存储的一个或多个发动机模拟声音数据来运算合成与当前状态信号相应的发动机模拟声音信号。该运算例如采用插值运算的方式，当然也可以根据具体情况采用其他适合的运算方式。由此，能够根据所存储的有限数量的模拟声音数据来获得与车辆的实时连续状态相对应的发动机模拟声音信号。
在一个实施例中，单片机322的存储单元中存储有多个发动机模拟声音数据。例如，多个发动机模拟声音数据包括发动机模拟声音数据D1、D2、 D3，其中，D1-D3分别对应于一个车辆行驶状态的发动机模拟声音。根据从车身控制器340获取的车辆当前状态信号，单片机322的处理单元根据该当前状态信号，采用存储器中所存储的发动机模拟声音数据D1-D3来计算与该当前状态信号相对应的模拟声音数据D4。然后，单片机322将计算得到的模拟声音数据D4转换为相应的发动机模拟声音信号S2并输出该发动机模拟声音信号S2。
继续参见图3，车载警示音设备300还包括音频驱动电路352。音频驱动电路352与单片机322连接，将从单片机322输出的发动机模拟声音信号S2放大。参见图4A，在第二外壳32上设置有插座354，在第一外壳30上设置有插座324，第二外壳32上插座354与第一外壳30上插座324电连接。例如，插座354是2pin式的插座，插座324是7pin式的插座并且其中的2个pin与插座354的2个pin连接。当然，插座324和插座354也可以采用其他样式的插座，以其他方式进行连接。由此，扬声器330通过插座354从音频驱动电路352接收经放大的发动机模拟声音信号S2，并将相应的发动机模拟声音发出来。参见5F，在一个实施例中，第二壳体32的表面上(例如，壳体32的背面)有多个缝隙C，发动机模拟声音经由这些缝隙C发出。
参见图5A和5G，第二壳体32是防水溅壳体，扬声器330与第二壳体32之间设置有密封结构362。并且，扬声器330本身也是防水的。该密封结构362例如是密封圈，当然密封结构362也可以以其他适合的方式来实现。这样，当车辆处于诸如下雨之类的水溅环境中时，扬声器330不会损坏，由此发出警示音的功能不会受到影响。
在一个实例中，喇叭组件310还包括保护电路316，保护电路316与驱动电路318电连接，以对驱动电路318进行保护。
在一个实施例中，单片机332、驱动电路318、保护电路316和音频驱动电路352位于第一壳体30中的同一电路板上。喇叭线圈组件314通过引线与电路板连接。当然，根据具体应用场景，这些部件的布置也可以以其他适合的方式来实现，不限于此。例如，根据具体应用环境，单片机332、驱动电路318、保护电路316和音频驱动电路352中的一个或多个位于不同的电路板上。
参见图4A，第一壳体30是防水壳体。由此，车辆喇叭在诸如大雨等导致其浸入水中的环境下，也不会受到影响。而且，车辆喇叭主体能够满足对车辆喇叭的防水测试标准，具有广泛的应用。
根据本申请的车载警示音设备，能够根据车辆的当前状况和车辆周围的环境而发出声强适度的喇叭警示音，还能够根据车辆的当前状态而发出相应的发动机模拟声音。进一步，车辆喇叭以及控制部分与扬声器分别位于不同的壳体中，由此便于安装和测试维修，同时由于能够分别满足不同的测试标准而降低了成本。因此，本申请的车载警示音设备以较低的成本和简单的结构实现了警示行人和周围车辆的功能，还提高了用户体验，具有广泛的应用。
本领域技术人员应当理解，上面公开的各个实施例可以在不偏离申请实质的情况下做出各种变形和修改。因此，本申请的保护范围应当由所附的权利要求书来限定。

Claims (19)

  1. 一种用于车辆的车载警示音设备，其特征在于，所述车载警示音设备包括：
    喇叭组件，所述喇叭组件包括喇叭线圈组件和与所述喇叭线圈组件连接的喇叭号筒；
    扬声器，被设置为独立于所述喇叭组件；以及
    控制单元，与所述喇叭组件和所述扬声器连接，所述控制单元被配置为根据所述车辆的当前状态和所述车辆周围的环境来产生声强控制信号并基于所述声强控制信号控制所述喇叭组件发出喇叭警示音，并且被配置为根据所述车辆的所述当前状态来产生发动机模拟声音信号并基于所述发动机模拟声音信号控制所述扬声器发出发动机模拟警示音。
  2. 根据权利要求1所述的车载警示音设备，其特征在于，所述喇叭线圈组件和所述控制单元位于所述车载警示音设备的第一壳体中，所述扬声器位于所述车载警示音设备的第二壳体中，所述第二壳体独立于所述第一壳体。
  3. 根据权利要求1或2所述的车载警示音设备，其特征在于，所述控制单元包括单片机，所述单片机具有存储单元，所述存储单元存储有发动机模拟声音数据，所述发动机模拟声音数据对应于所述车辆的车速。
  4. 根据权利要求3所述的车载警示音设备，其特征在于，所述控制单元包括总线接口，所述总线接口位于所述第一壳体上并与所述车辆的车身控制器连接。
  5. 根据权利要求4所述的车载警示音设备，其特征在于，所述单片机与所述总线接口电连接，以通过所述总线接口从所述车身控制器接收指示所述车辆的当前状态的当前状态信号。
  6. 根据权利要求5所述的车载警示音设备，其特征在于，所述单片机根据所述当前状态信号和所述车辆周围的环境来产生所述声强控制信号，所述车辆的当前状态包括：当前车速、倒车状态、尾门状态和充电状态，所述车辆的环境包括天气、照明、路况、所述车辆行驶的区域。
  7. 根据权利要求5所述的车载警示音设备，其特征在于，所述单片机具有处理单元，所述处理单元与所述存储单元和所述总线接口连接，所述处理单元被配置为根据从所述总线接口接收的当前状态信号和存储在所述存储单元中的发动机模拟声音数据，来确定与所述当前状态相对应的发动机模拟声音信号。
  8. 根据权利要求3所述的车载警示音设备，其特征在于，所述喇叭组件还包括音频驱动电路，所述音频驱动电路与所述单片机和所述扬声器连接，并将从所述单片机接收的所述发动机模拟声音信号进行放大，所述扬声器根据经放大的发动机模拟声音信号发出所述发动机模拟警示音。
  9. 根据权利要求8所述的车载警示音设备，其特征在于，在所述第二外壳上设置有插座，所述扬声器通过所述插座与所述音频驱动电路电连接。
  10. 根据权利要求8所述的车载警示音设备，其特征在于，所述喇叭线圈组件包括含定铁芯的电磁线圈和含动铁芯的振动膜片，所述喇叭组件还包括驱动电路，所述驱动电路与所述电磁线圈和所述单片机电连接。
  11. 根据权利要求10所述的车载警示音设备，其特征在于，所述单片机根据所述声强控制信号来控制驱动所述电磁线圈导通的占空比，从而调节所述喇叭警示音的声音强度。
  12. 根据权利要求11所述的车载警示音设备，其特征在于，所述单片机、所述驱动电路、所述保护电路和所述音频驱动电路位于所述第一壳体中的同一电路板上。
  13. 根据权利要求2所述的车载警示音设备，其特征在于，所述第一壳体是防水壳体，所述第二壳体是防水溅壳体，所述扬声器与所述第二壳体之间设置有密封结构。
  14. 一种用于车辆的车载警示音装置，其特征在于，所述车载警示音装置包括：
    喇叭组件，所述喇叭组件包括喇叭线圈组件和与所述喇叭线圈组件连接的喇叭号筒；以及
    控制单元，与所述喇叭组件连接，所述控制单元被配置为根据所述车辆的当前状态和所述车辆周围的环境来产生声强控制信号并基于所述声强控制信号控制所述喇叭组件发出喇叭警示音。
  15. 根据权利要求14所述的车载警示音装置，其特征在于，所述喇叭线圈组件和所述控制单元被设置在所述车载警示音设备的壳体中，所述壳体是防水的壳体，所述喇叭号筒被固定在所述壳体的端面上。
  16. 根据权利要求15所述的车载警示音装置，其特征在于，所述控制单元包括单片机和与所述单片机连接的总线接口，所述总线接口位于所述壳体上并与所述车辆的车身控制器连接，所述单片机通过所述总线接口从所述车身控制器接收指示所述车辆的当前状态的当前状态信号。
  17. 根据权利要求16所述的车载警示音装置，其特征在于，所述单片机根据所述当前状态信号和所述车辆周围的环境来产生所述声强控制信号，所述车辆的当前状态包括：当前车速、倒车状态、尾门状态和充电状态，所述车辆的周围环境包括天气、照明、路况、所述车辆行驶的区域。
  18. 根据权利要求16所述的车载警示音装置，其特征在于，所述喇叭线圈组件包括含定铁芯的电磁线圈和含动铁芯的振动膜片，所述喇叭组件还包括驱动电路，所述驱动电路与所述电磁线圈和所述单片机电连接，所 述单片机根据所述声强控制信号来控制驱动所述电磁线圈导通的占空比，从而调节所述喇叭警示音的声音强度。
  19. 根据权利要求18所述的车载警示音装置，其特征在于，所述单片机、所述驱动电路和所述保护电路位于所述壳体中的同一电路板上。
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