CN207625769U - Electric car low speed caution sound apparatus and system - Google Patents
Electric car low speed caution sound apparatus and system Download PDFInfo
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- CN207625769U CN207625769U CN201721547217.XU CN201721547217U CN207625769U CN 207625769 U CN207625769 U CN 207625769U CN 201721547217 U CN201721547217 U CN 201721547217U CN 207625769 U CN207625769 U CN 207625769U
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Abstract
The utility model provides a kind of electric car low speed caution sound apparatus and system, is related to electric vehicle field, there is a problem of that user experience is poor to alleviate traditional electric car, can improve user experience.The device includes：Shell, loud speaker and PCB circuit board, loud speaker and PCB circuit board are arranged in shell；Sequentially connected signal acquisition module, filter module, microcontroller, audio processing modules and audio driver module are provided in PCB circuit board；And the music storage and power module being connect respectively with microcontroller；Audio driver module is connected with loud speaker；Signal acquisition module is for acquiring speed information；Filter module is for handling speed information；Music storage is for storing sound source information；Audio processing modules are for handling sound source information；Audio driver module is used for amplified signal.
Description
Technical field
The utility model belongs to electric vehicle technical field, is specifically related to a kind of electric car low speed warning mixer and is
System.
Background technology
With global warming, energy shortage and environmental pollution getting worse, as world energy consumption big country and ring
The important force of border protection, China actively implement electric vehicle science and technology development strategy, widely popularize the implementation of pure electric automobile policy, promote
The fast development of electric vehicle, in country under the strategic guidance of new-energy automobile industry development, electric vehicle obtains quickly
Extensive use.
The electric vehicles such as electric vehicle, battery-operated motor cycle, electronic snowmobile are increasing, and security performance is concerned,
On the one hand it is the safety of driver, still further aspect is the safety of road pedestrian and other vehicle operators.But it is existing
Electric vehicle structure it is relatively simple, and electric motor starting and operation sound it is smaller so that pedestrian especially old man, child and hearing
Sufferer is subtle so that safety does not ensure, easily causes traffic accident.
In conclusion that there are safety coefficients is low for traditional electric vehicle, cannot meet the needs of users, user experience compared with
The problem of difference.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of electric car low speed warning mixer and cooling-water machines, with solution
The certainly not high problem of user experience existing for traditional electric vehicle in the prior art, can improve user experience.
In a first aspect, the utility model embodiment provides a kind of electric car low speed warning mixer, including：Shell is raised one's voice
Device and PCB circuit board, the loud speaker and the PCB circuit board are arranged in the shell；
Be provided in the PCB circuit board signal acquisition module, filter module, microcontroller, music storage, at audio
Manage module, audio driver module and power module；The signal acquisition module passes through the filter module and the microcontroller
It is connected；The music storage, audio processing modules and the power module are connected with the microcontroller respectively；It is described
Audio processing modules are connected with the audio driver module, and the audio driver module is connected with the loud speaker；
The speed information of the signal acquisition module acquisition electric car；
The filter module is filtered the speed information；
The music storage stores sound source information；
The microcontroller transfers sound source information corresponding with the speed information；
The audio processing modules handle sound source information；
The audio driver module amplified signal；
The power module is powered for the microcontroller；
The loud speaker sends out caution sound.
With reference to first aspect, the utility model embodiment provides the first possible embodiment of first aspect,
In, the signal acquisition module includes CAN interface, the external vehicle speed sensor of CAN interface；
The filter module includes filter；
The audio processing modules include decoder and digital analog converter；
The audio driver module includes power amplifier.
The possible embodiment of with reference to first aspect the first, the utility model embodiment provide the of first aspect
Two kinds of possible embodiments, wherein the vehicle speed sensor uses magnetoelectric sensor, Hall-type vehicle speed sensor or light
Any one of electric-type vehicle speed sensor.
The possible embodiment of with reference to first aspect the first, the utility model embodiment provide the of first aspect
Three kinds of possible embodiments, wherein the power amplifier uses D-type power amplifier.
The possible embodiment of with reference to first aspect the first, the utility model embodiment provide the of first aspect
Four kinds of possible embodiments, wherein the power amplifier is using A power-like amplifiers, B class power amplifications area, AB class work(
Any one of rate amplifier, G power-like amplifiers or H class A amplifier As.
The 4th kind of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Five kinds of possible embodiments, wherein cooling fin is additionally provided in the PCB circuit board, the power amplifier is arranged in institute
It states on cooling fin.
With reference to first aspect, the utility model embodiment provides the 6th kind of possible embodiment of first aspect,
In, the PCB circuit board is additionally provided with power management chip, and the power management chip is connected with the power module.
With reference to first aspect, the utility model embodiment provides the 7th kind of possible embodiment of first aspect,
In, the shell includes：Upper shell and lower housing, the upper shell are connect with the lower housing in a manner of it can dismantle.
The 7th kind of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Eight kinds of possible embodiments, wherein the upper shell and the lower housing are mixed using nylon and glass fibre.
Second aspect, the utility model embodiment additionally provide a kind of electric car low speed warning system for electrical teaching, including：Temperature sensing
Electric car low speed described in device, alarm and first aspect and its possible embodiment warns mixer, the temperature sensing
Device, the alarm are connected with electric car low speed warning mixer respectively.
The utility model embodiment brings following advantageous effect：
In electric car low speed caution sound apparatus and system provided by the utility model, wherein the electric car low speed warns mixer
Including：Shell, loud speaker and PCB circuit board, the loud speaker and the PCB circuit board are arranged in the shell；The PCB
Signal acquisition module, filter module, microcontroller, music storage, audio processing modules, audio driven are provided on wiring board
Module and power module；The signal acquisition module is connected by the filter module with the microcontroller；The music
Memory, audio processing modules and the power module are connected with the microcontroller respectively；The audio processing modules with
The audio driver module is connected, and the audio driver module is connected with the loud speaker；The signal acquisition module is used
In the speed information of acquisition electric car；The filter module is for handling the speed information；The music storage is used
In storage sound source information；The audio processing modules are for handling sound source information；The audio driver module is used
In amplified signal；The power module is used to power for the microcontroller；The loud speaker is for sending out caution sound.Therefore,
The technical solution that the utility model embodiment provides, capable of solving traditional electric vehicle in the prior art, there are safety coefficients
It is low, it cannot meet the needs of users, the poor problem of user experience.The electric car low speed warns mixer can be in vehicle low speed
When send out caution sound, have prompting function, the safety coefficient of electric vehicle can be improved, improve user experience.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is realized and is obtained in book, claims and attached drawing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment cited below particularly, and
The appended attached drawing of cooperation, is described in detail below.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, other drawings may also be obtained based on these drawings.
Fig. 1 is the appearance diagram that the electric car low speed that the utility model embodiment provides warns mixer；
Fig. 2 is the A-A views that electric car low speed warns mixer in Fig. 1；
Fig. 3 is the structural schematic diagram that the electric car low speed that the utility model embodiment provides warns mixer；
Fig. 4 is the structural schematic diagram that another electric car low speed that the utility model embodiment provides warns mixer；
Fig. 5 is the structure diagram that a kind of electric car low speed that the utility model embodiment provides warns system for electrical teaching.
Specific implementation mode
To keep the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with attached drawing to this
The technical solution of utility model is clearly and completely described, it is clear that described embodiment is that the utility model part is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, shall fall within the protection scope of the present invention.
Currently, that there are safety coefficients is low for traditional electric vehicle, cannot meet the needs of users, user experience is poor
Problem is based on this, and the utility model embodiment provides a kind of electric car low speed caution sound apparatus and system, to solve the prior art
That there are safety coefficients is low for middle traditional electric vehicle, cannot meet the needs of users, the poor problem of user experience, Neng Gougai
Kind user experience.
For ease of understanding the present embodiment, a kind of cooling-water machine disclosed in the utility model embodiment is carried out first
It is discussed in detail.
Embodiment one：
As shown in Figure 1, Figure 2 and Figure 3, the utility model embodiment provides a kind of electric car low speed warning mixer, can answer
For electric vehicle technical field, electric car low speed warning mixer includes：Shell 10, loud speaker 5 and PCB circuit board 6.
Wherein, the loud speaker and the PCB circuit board are arranged in the shell.
Specifically, be provided in the PCB circuit board signal acquisition module 601, filter module 602, microcontroller 603,
Music storage 604, audio processing modules 605, audio driver module 606 and power module 607.
Wherein, the signal acquisition module is connected by the filter module with the microcontroller；The music is deposited
Reservoir, audio processing modules and the power module are connected with the microcontroller respectively；The music storage with it is described
Audio processing modules are connected；The audio processing modules are connected with the audio driver module, the audio driver module
It is connected with the loud speaker.
The signal acquisition module is used to acquire the speed information of electric car.
Further, the signal acquisition module includes CAN interface 8 and CAN transceiver (being not shown in the drawing), institute
State the external vehicle speed sensor of CAN interface.
It should be pointed out that the signal acquisition module can also include pulse receiving module.
The vehicle speed sensor is used to detect the speed information of electric car, and the vehicle speed sensor is mounted on the drive axle of electric car
In shell or transmission case, the outside of vehicle speed sensor signal wire usually requires one layer of shielded layer of cladding, to eliminate electromagnetism and radio frequency
Interference, such as high tension live wire and car phone or the electromagnetism and radio frequency interference of the generation of other electronic equipments, to ensure electronics
Communication does not generate interruption, prevents from causing cornering ability variation or other problems.
Further, the vehicle speed sensor uses magnetoelectric sensor, Hall-type vehicle speed sensor or photoelectricity
Any one of formula vehicle speed sensor.
In the present embodiment, the vehicle speed sensor uses magnetoelectric sensor.
Magnetoelectric sensor is the sensing for being exported input motion velocity transformation at induced potential using electromagnetic induction principle
Device.It can be converted into the mechanical energy of measurand the electric signal for being easy to measure.
Magneto-electric vehicle speed sensor is an analog AC signal generator, usually by the magnetic core and line of two binding posts of band
Circle composition, magnetoelectric sensor are also referred to as electrodynamic type or inductosyn, are suitable only for measuring into Mobile state.Since magneto-electric passes
Sensor has larger output power, therefore adapted circuit is simpler, and zero-bit and performance are stablized；Magnetoelectric sensor directly exports induction
Potential, and sensor usually has higher sensitivity, so not needing high-gain amplifier generally.
The filter module is for being filtered the speed information.
Specifically, the filter module includes filter, it to be used for noise filtering.
Further, the filter uses differential amplification filter.
Further, the filter module can also include signal shaper can use for carrying out shaping to speed information
In smoothing processing.
Further, the signal shaper includes RC oscillating circuits, A/D converter and D/A converter.
The music storage is for storing sound source information.
Specifically, music storage includes FLASH memory.The sound source information of storage is by same flexible car in difference
The sound source that is measured from of speed, petrol engine rotating speed, gearbox-gear, brake board status and when throttle downward driving
Information in case being called when electric vehicle actual travel, and is stored by certain format, it is contemplated that the limitation of memory capacity with
And warning effect, the length of the storage of sound source information here are not required to too long, the playout length of sound source is generally 10-15
Second.
Further, FLASH memory uses flash card, small, and memory capacity is big.Flash card include USB flash disk,
SmartMedia (SM cards), Compact Flash (CF cards), MultiMediaCard (mmc card), Secure Digital (SD
Card), one kind or more of Memory Stick (memory stick), XD-Picture Card (XD cards) and micro harddisk (MICRODRIVE)
Kind.
Further, the music storage can also store the data of different banks, such as alarm sound library, left-hand rotation
Sound library, right-hand rotation sound library, reversing sound library etc. the relevant bank of vehicle-state.
The audio processing modules are for handling sound source information.
Specifically, the audio processing modules include decoder for being decoded to sound source information and for pair
Decode the digital analog converter that obtained digital signal is converted into analog signal.
The audio driver module is used for amplified signal.
Specifically, the audio driver module includes power amplifier.
Further, power amplifier described in the power amplifier using A power-like amplifiers, B class power amplifications area,
Any one of AB power-like amplifiers, G power-like amplifiers or H class A amplifier As.
Wherein, A power-like amplifiers are simplest Amplifier types, for any output waveform, the crystalline substance of output stage
Body pipe is (will not complete switch off) in the conduction state always.This class A amplifier A has splendid linear characteristic, but efficiency is very low.
The output stage transistor of B power-like amplifiers is only connected in the half period (180 degree) of signal waveform, in order to whole
A signal is amplified, and has used two transistors, and one is used for positive output signal, another is used for negative output signal.B class work(
The efficiency far of rate amplifier is higher than A power-like amplifiers, but due to two transistors to off during there are crossover point,
It is distorted larger.
A classes and the combination of B classes are AB power-like amplifiers, and efficiency is higher than A power-like amplifiers, and distortion is put less than B class power
Big device.By being biased to two transistors in circuit, making signal, (B power-like amplifiers introduce nonlinear close to zero
Operating point) when two transistor turns；When big signal, transistor is transformed into class-B mode of operation.It can be seen that two when small signal
A transistor keeps effectively working, and is similar to A power-like amplifiers；When big signal, correspond to waveform every half cycle, only one
A transistor keeps effective status, is similar to B power-like amplifiers.
G power-like amplifiers are identical as AB power-like amplifiers, but it uses two-way or multiple power supplies, are operated in small letter
When number level, amplifier is powered using lower supply voltage.With the promotion of signal level, amplifier automatically switches to suitably
Supply voltage power supply.Due to only using high voltage supply if necessary, and AB power-like amplifiers then use high voltage supply always,
Therefore, the efficiency of G power-like amplifiers is higher than AB power-like amplifiers.
H power-like amplifiers farthest reduce the pressure drop of output stage by adjusting the supply voltage of its own.It can be with
Using multiple discrete voltages, continuously adjustable voltage can also be used.Although similar with G power-like amplifier technologies, it is intended to reduce
The power consumption of output-stage circuit, but H class A amplifier As technology is without multiple power supplys.The design of H power-like amplifiers is put than other
Big device is complicated, needs additional control circuit to predict, control supply voltage.
To sum up, the present embodiment is preferably, and power amplifier uses G power-like amplifiers.
Further, the audio driver module can also include preamplifier.
In view of the heat dissipation problem of device, further, cooling fin is additionally provided in the PCB circuit board, the work(
Rate amplifier is arranged on the cooling fin.
Further, the cooling fin uses finned cooling fin, with increasing heat radiation area, is conducive to rapid cooling.
Further, radiator fan and thermal grease are also provided in the PCB circuit board, to be assisted
Heat dissipation makes device realize rapid cooling.
The power module is used to power for the microcontroller.
Specifically, the cathode of the power module is connected with power supply storage battery, the anode of the power module is opened by key
Connection connects the power supply storage battery.
The loud speaker is for sending out caution sound.
The microcontroller for receive come from the processed speed information of filter module, transferred from music storage with
The sound source information of current vehicle speed information matches (correspondence) exports the sound source information to audio processing modules.
Microcontroller and peripheral circuit are integrated on pcb board, above-mentioned peripheral circuit includes being connected with the microcontroller
The memory that connects, register, arithmetic unit etc.；Wherein, the memory includes random access memory and read-only memory；Described
It reads memory and uses Electrically Erasable Programmable Read-Only Memory (Electrically Erasable Programmable Read
Only Memory, EEPROM), Electrically Erasable Programmable Read-Only Memory is the storage chip that data are not lost after a kind of power down, energy
Enough realize the power failure memory function of microcontroller.
Microcontroller, also known as microcontroller (Microcontrollers) or micro-control unit (Microcontroller
Unit, MCU), the microcontroller is a kind of IC chip, is to use very large scale integration technology with data
Central processing unit (CPU), caching, a variety of I/O mouthfuls and interruption system, timer/counter, the display driver circuits of processing capacity
Integrated, microcontroller can be divided into 8,16 and 32 microcontrollers according to data-bus width.
Further, the microcontroller in the present embodiment uses 32 microcontrollers, specifically, using ARM series monolithics,
Preferably, microcontroller uses STM32F103 series high-performance microcontrollers, performance to stablize, and processing speed is fast.STM32F103
Series monolithic is first 32 standard RISC (reduced instruction set computer) processor based on ARM Crotex3M architectures, can
Very high code efficiency is provided, the high-performance of ARM kernels has been played on usual 8 memory spaces with sixteen-bit system.This is
Row operation frequency of microprocessor is 72MHz, the SRAM of built-in up to Flash (flash memory) memory and 20K bytes of 128K bytes
(Static Random Access Memory, static RAM), and with abundant general purpose I/O (inputs/defeated
Go out) port, as the embedded ARM processor of a new generation, it is realization MCU (Microcontroller Unit, microcontroller list
Member) needs provide the platform of low cost, the number of pins of reduction, reduction system power dissipation, while providing the meter of brilliance
Calculate performance and advanced interrupt response system.Abundant Resources on Chip makes STM32F103 series microprocessors in multiple fields
It is applied.
Will produce the surge voltage of moment when starting in view of electric car, further, the power module with it is described
It is provided with thyristor and/or varistor in connection line between microcontroller, can effectively inhibit the spike electricity of mutation
Pressure is conducive to the Electro Magnetic Compatibility for improving device.
The shell is used to protect internal loud speaker and PCB circuit board, and playing prevents dust, steam and other are miscellaneous
The effect that matter particle enters, prevents it from being damaged to the component on loud speaker and PCB circuit board, it is ensured that the normal work of device
Make；
In view of heat dissipation problem, multiple heat emission holes, multiple heat emission hole array distributions, heat dissipation are provided on the shell
Hole uses circular louvre or rectangle heat sink strip.
Further, the shell includes：Upper shell 1 and lower housing 2, the upper shell and the lower housing are can tear open
The mode unloaded connects.
Further, the upper shell and lower housing are connected by a snap, are threadedly coupled, being hinged or the mode of adhesion can
Dismantling connection.
In the present embodiment, the upper shell is threadedly coupled with the lower housing.
In order to ensure the leakproofness of shell, further, the position setting that the upper shell is connected with the lower housing
There is the first sealing ring 4.
Further, the PCB circuit board is set on the lower case, and is threadedly coupled with the lower housing.
The loud speaker setting passes through screw connection on the upper shell, and with the upper shell.
Further, the second sealing ring 3 is provided at the position that the loud speaker is contacted with the upper shell.
Further, the upper shell and the lower housing are mixed using nylon and glass fibre.
In the present embodiment, the upper shell and the lower housing are mixed using PA66+30GF, wherein PA66+30GF
Refer to that nylon66 fiber adds 30% glass fibre.PA66+30GF has following excellent performance：1), high temperature resistant：PA66+30GF plastic cement
Short-term heatproof can reach 250 degree, long-term heatproof 150-160 degree；2), fire-retardant：Flame retardant rating reaches UL94-VO grades；3), intensity
It is high：Tensile strength 527MPa, bending strength 178MPa.
Further, it is provided with CAN interface on the shell.
Specifically, the CAN interface is arranged on lower housing.
Further, power input interface 7 is additionally provided on the shell, the power input interface is used for external power supply
Power supply.
Specifically, the power input interface is arranged on lower housing.
Further, handle can also be arranged in the hull outside, be convenient for carrying installation.
Further, indicator light (not shown), the indicator light and the microcontroller are provided on the shell
It is connected.
The indicator light includes indicator of the power supply status and malfunction indicator lamp.Indicator of the power supply status is used to indicate switching on and shutting down
State, malfunction indicator lamp is for carrying out indicating fault.
Further, the malfunction indicator lamp uses flashing lamp, it is preferred that the malfunction indicator lamp is flickered using LED
Lamp.
Further, it is also provided with display screen on the shell；The display screen is connected with the microcontroller；
The display screen is used for display parameters, such as present speed information.
Further, LCD display may be used in the display screen, and the display screen can also use LED display.
In electric car low speed caution sound apparatus and system provided by the utility model, wherein the electric car low speed warns mixer
Including：Shell, loud speaker and PCB circuit board, the loud speaker and the PCB circuit board are arranged in the shell；The PCB
Signal acquisition module, filter module, microcontroller, music storage, audio processing modules, audio driven are provided on wiring board
Module and power module；The signal acquisition module is connected by the filter module with the microcontroller；The music
Memory, audio processing modules and the power module are connected with the microcontroller respectively；The audio processing modules with
The audio driver module is connected, and the audio driver module is connected with the loud speaker；The signal acquisition module is used
In the speed information of acquisition electric car；The filter module is for handling the speed information；The music storage is used
In storage sound source information；The audio processing modules are for handling sound source information；The audio driver module is used
In amplified signal；The power module is used to power for the microcontroller；The loud speaker is for sending out caution sound.Therefore,
The technical solution that the utility model embodiment provides, capable of solving traditional electric vehicle in the prior art, there are safety coefficients
It is low, it cannot meet the needs of users, the poor problem of user experience.The electric car low speed warns mixer can be in vehicle low speed
When send out caution sound, have prompting function, the safety coefficient of electric vehicle can be improved, improve user experience.
Embodiment two：
As shown in figure 4, the utility model additionally provides another electric car low speed warning mixer, the difference with embodiment one
It is, electric car low speed warning mixer further includes：Power management chip 608.
Wherein, power management chip is arranged in PCB circuit board, and the power management chip is connected with the power module
It connects.Specifically, power management chip is arranged between the microcontroller and the power module.
Further, the power management chip that the present embodiment uses uses BQ2057 power management chips.
Further, electric car low speed warning mixer further includes：LED light bar 609, the LED light bar and the micro-control
Device processed is connected, and the LED light bar is used to change glow frequency or light emission luminance according to speed information, to prompt pedestrian to note
Meaning is especially more applicable at night, enhances prompt effect.
In view of D-type power amplifier, heat dissipation capacity is small, therefore does not need cooling fin, in order to save energy and cost, this reality
The electric car low speed warning mixer of example offer is applied, power amplifier uses D-type power amplifier.
It is efficient due to D-type power amplifier ratio AB power-like amplifiers, 90% or more, and quantity of heat production can be reached
It is few, it is not required to individually increase cooling fin, it being capable of energy saving and device manufacturing cost.
The output of D-type power amplifier is switching waveform, and switching frequency significantly larger than needs the audio signal restored most
High-frequency.After low-pass filtering, the average value of output waveform is consistent with actual audio signal.Due to being exported when work
Grade transistor is in fully on or complete switches off state, will not enter the linear work area of transistor, therefore, D class power is put
Big utensil has extreme efficiency (up to 90% or more).Modern D-type power amplifier can reach and the same rank of class ab ammplifier
Fidelity.
Embodiment three：
As shown in figure 5, the utility model embodiment additionally provides a kind of electric car low speed warning system for electrical teaching, electric car low speed police
Show that system for electrical teaching includes the electric car low speed warning mixer 700 referred in temperature sensor 500, alarm 600 and previous embodiment,
The temperature sensor, the alarm are connected with electric car low speed warning mixer respectively.
Specifically, the temperature sensor, the alarm warn the microcontroller of mixer with the electric car low speed
It is connected.
The temperature sensor is used to acquire the gas temperature of the working environment of the electric car low speed warning mixer, and will
The gas temperature is sent to the microcontroller in real time.
Further, the temperature sensor uses thermistor.Thermal resistor is one kind of sensing element, according to
Temperature coefficient difference is divided into positive temperature coefficient thermistor (PTC) and negative temperature coefficient thermistor (NTC).Thermistor
The typical feature of device is to show different resistance values at temperature sensitive, different temperature.Positive temperature coefficient thermistor
(PTC) when temperature is higher, resistance value is bigger, and negative temperature coefficient thermistor (NTC) resistance value when temperature is higher is lower,
They belong to semiconductor devices.
Specifically, the temperature sensor in the present embodiment uses negative temperature coefficient (NTC) thermistor.
The alarm is used for when electric car low speed caution sound plant failure, alarm is sent out, with call user's attention electric car
Low speed warns mixer abnormal；Such as when gas temperature is higher than preset upper limit value or less than preset lower limiting value, micro-control
Device processed can also control alarm and send out alarm.
Further, the alarm uses acousto-optic integrated alarm, such as flashing light on the market, warning effect
It is good.
It should be pointed out that the alarm can also include alarm lamp and buzzer, specifically, alarm lamp uses feux rouges
LED light, the buzzer use piezo buzzer.
Further, the electric car low speed warning system for electrical teaching further includes：Voltage detection module, current detection module, electricity
Pressure protection switch and overcurrent protective switch, the voltage detection module, current detection module, low pressure overvoltage protection switch and overcurrent
Protection switch is connected with microcontroller respectively, and the voltage detection module is used to detect the voltage of electric car low speed warning mixer
Whether in working range；Whether the current detection module is used to detect the electric current of electric car low speed warning mixer in work model
In enclosing；The voltage protection switch includes low-voltage protective switch and overvoltage protection switch, is respectively used to high pressure and low-voltage variation；Institute
Overcurrent protective switch is stated for preventing overcurrent.
The electric car low speed that the utility model embodiment provides warns system for electrical teaching, is warned with the electric car low speed that above-described embodiment provides
Show mixer technical characteristic having the same, so can also solve identical technical problem, reaches identical technique effect.
In addition, the electric car low speed warning mixer in the present embodiment also has temperature detecting function, voltage detecting function, electricity
Current detection functionality and various protections switch etc. can warn mixer to protect electric car low speed, be conducive to extend electric car
Low speed warns the service life of mixer.
Example IV：
The utility model embodiment provides a kind of electric vehicle, including the electric car low speed warning phonetic system that embodiment three is related to
System.
The electric vehicle that the utility model embodiment provides, the electric car low speed warning mixer tool provided with above-described embodiment
There is identical technical characteristic, so can also solve identical technical problem, reaches identical technique effect.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
It with the specific work process of device, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In addition, in the description of the utility model embodiment unless specifically defined or limited otherwise, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, can also be electrical connection；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned term with concrete condition
Concrete meaning in the present invention.
It is in the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
The utility model and simplifying describes for ease of description, do not indicate or imply the indicated device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.
Finally it should be noted that：Embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical solution of utility model, rather than its limitations, the scope of protection of the utility model is not limited thereto, although with reference to aforementioned
The utility model is described in detail in embodiment, it will be understood by those of ordinary skill in the art that：It is any to be familiar with this skill
The technical staff in art field within the technical scope disclosed by the utility model, still can be to the skill recorded in previous embodiment
Art scheme modify or can readily occur in variation or equivalent replacement of some of the technical features；And these modifications,
Variation is replaced, the spirit and model of the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution
It encloses, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model is answered described is wanted with right
Subject to the protection domain asked.
Claims (10)
1. a kind of electric car low speed warns mixer, which is characterized in that including：Shell, loud speaker and PCB circuit board, it is described to raise one's voice
Device and the PCB circuit board are arranged in the shell；
Signal acquisition module, filter module, microcontroller, music storage, audio frequency process mould are provided in the PCB circuit board
Block, audio driver module and power module；The signal acquisition module is connected by the filter module with the microcontroller
It connects；The music storage, the audio processing modules and the power module are connected with the microcontroller respectively；It is described
Audio processing modules are connected with the audio driver module, and the audio driver module is connected with the loud speaker；
The speed information of the signal acquisition module acquisition electric car；
The filter module is filtered the speed information；
The music storage stores sound source information；
The microcontroller transfers sound source information corresponding with the speed information；
The audio processing modules handle sound source information；
The audio driver module amplified signal；
The power module is powered for the microcontroller；
The loud speaker sends out caution sound.
2. electric car low speed according to claim 1 warns mixer, which is characterized in that the signal acquisition module includes
CAN interface, the external vehicle speed sensor of CAN interface；
The filter module includes filter；
The audio processing modules include decoder and digital analog converter；
The audio driver module includes power amplifier.
3. electric car low speed according to claim 2 warns mixer, which is characterized in that the vehicle speed sensor uses magnetoelectricity
Any one of formula sensor, Hall-type vehicle speed sensor or photo-electric vehicle speed sensor.
4. electric car low speed according to claim 2 warns mixer, which is characterized in that the power amplifier uses D classes
Power amplifier.
5. electric car low speed according to claim 2 warns mixer, which is characterized in that the power amplifier uses A classes
Any one of power amplifier, B class power amplifications area, AB power-like amplifiers, G power-like amplifiers or H class A amplifier As.
6. electric car low speed according to claim 5 warns mixer, which is characterized in that also set up in the PCB circuit board
There are cooling fin, the power amplifier to be arranged on the cooling fin.
7. electric car low speed according to claim 1 warns mixer, which is characterized in that the PCB circuit board is additionally provided with
Power management chip, the power management chip are connected with the power module.
8. electric car low speed according to claim 1 warns mixer, which is characterized in that the shell includes：Upper shell and
Lower housing, the upper shell are connect with the lower housing in a manner of it can dismantle.
9. electric car low speed according to claim 8 warns mixer, which is characterized in that the upper shell and the lower housing
It is mixed using nylon and glass fibre.
10. a kind of electric car low speed warns system for electrical teaching, which is characterized in that including：Temperature sensor, alarm and such as claim 1-
9 any one of them electric car low speed warn mixer, the temperature sensor, the alarm to be warned respectively with the electric car low speed
Show that mixer is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721547217.XU CN207625769U (en) | 2017-11-17 | 2017-11-17 | Electric car low speed caution sound apparatus and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721547217.XU CN207625769U (en) | 2017-11-17 | 2017-11-17 | Electric car low speed caution sound apparatus and system |
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| Publication Number | Publication Date |
|---|---|
| CN207625769U true CN207625769U (en) | 2018-07-17 |
Family
ID=62829021
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721547217.XU Expired - Fee Related CN207625769U (en) | 2017-11-17 | 2017-11-17 | Electric car low speed caution sound apparatus and system |
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| Country | Link |
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| CN (1) | CN207625769U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588545A (en) * | 2019-09-30 | 2019-12-20 | 吉林北斗航天汽车研究院有限公司 | T-BOX with AVAS function |
| CN111361498A (en) * | 2018-12-25 | 2020-07-03 | 深圳纽斯声学系统有限公司 | Sound simulator for fuel automobile outside carriage |
| CN115723668A (en) * | 2022-12-06 | 2023-03-03 | 一汽奔腾轿车有限公司 | Vehicle-mounted pedestrian warning device based on multi-sound-source system |
-
2017
- 2017-11-17 CN CN201721547217.XU patent/CN207625769U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111361498A (en) * | 2018-12-25 | 2020-07-03 | 深圳纽斯声学系统有限公司 | Sound simulator for fuel automobile outside carriage |
| CN110588545A (en) * | 2019-09-30 | 2019-12-20 | 吉林北斗航天汽车研究院有限公司 | T-BOX with AVAS function |
| CN115723668A (en) * | 2022-12-06 | 2023-03-03 | 一汽奔腾轿车有限公司 | Vehicle-mounted pedestrian warning device based on multi-sound-source system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 239000, No.7, Ronghua Road, Chahe Economic Development Zone, Lai'an county, Chuzhou City, Anhui Province Patentee after: Chuzhou Songze Electric Appliance Co.,Ltd. Address before: 239000, No.7, Ronghua Road, Chahe Economic Development Zone, Lai'an county, Chuzhou City, Anhui Province Patentee before: CHUZHOU SONGZE ELECTRICAL APPLIANCE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180717 |
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| CF01 | Termination of patent right due to non-payment of annual fee |