CN207711910U - A kind of new-energy automobile based on CAN bus runs at a low speed reminiscences - Google Patents
A kind of new-energy automobile based on CAN bus runs at a low speed reminiscences Download PDFInfo
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- CN207711910U CN207711910U CN201721464104.3U CN201721464104U CN207711910U CN 207711910 U CN207711910 U CN 207711910U CN 201721464104 U CN201721464104 U CN 201721464104U CN 207711910 U CN207711910 U CN 207711910U
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Abstract
The utility model provides a kind of new-energy automobile based on CAN bus and runs at a low speed reminiscences, including CAN interface unit, main control unit, audio output unit, sound volume regulation unit, indicator unit and power supply unit.The utility model is when new-energy automobile starting and speed is when driving less than 20km/h, it can be simulated according to the driving condition of vehicle and travels sound, to remind goers outside vehicle or vehicle actively to avoid, prevent the safety accidents such as personnel's injury and vehicle collision from occurring, ensure the operational safety of new-energy automobile, its is simple in structure, and system power dissipation is low, of low cost, stability and good reliability, response quickly, using flexible are with good expansibility.
Description
Technical field
The utility model is related to new-energy automobile transport condition control technology fields, more particularly to a kind of to be based on CAN bus
New-energy automobile run at a low speed reminiscences.
Background technology
New-energy automobile refer to using unconventional vehicle fuel (or using conventional vehicle fuel but load new type power fill
Set), the automobile with new technology, new construction and advanced technology principle.Wherein pure electric automobile (BEV), hybrid electric vapour
Vehicle (HEV) and fuel cell electric vehicle (FCEV) development prospect are the best, and at present country widely popularize it is main new
Energy vehicle.
With the high speed development of New Energy Sources In China auto industry, more and more new-energy automobiles will be launched.Pure electricity
Dynamic and plug-in hybrid-power automobile is all to utilize driving motor supplies power source in starting, and startup sound is smaller, starting
Speed, in city and crowded region, the safety accident of the pedestrian and other vehicles that are easy to cause outside to vehicle.
Utility model content
(1) the technical issues of solving
To solve the above-mentioned problems, the utility model provides a kind of new-energy automobile based on CAN bus and runs at a low speed
Reminiscences, when new-energy automobile starting and speed is when driving less than 20km/h, can simulate its row according to the driving condition of vehicle
Sound is sailed, to remind goers outside vehicle or vehicle actively to avoid, prevents the safety accidents such as personnel's injury and vehicle collision from occurring, it is ensured that
The operational safety of new-energy automobile.
(2) technical solution
A kind of new-energy automobile based on CAN bus runs at a low speed reminiscences, including CAN interface unit, main control unit, sound
Frequency output unit, sound volume regulation unit, indicator unit and power supply unit；
The main control unit is connected by the CAN interface unit with vehicle-mounted CAN bus, and it is total to acquire the vehicle-mounted CAN
The data such as vehicle speed, gear, left and right turn above line, carry out Composite tone signal after calculating analysis, and output is separately connected
The audio output unit, the sound volume regulation unit and the indicator unit；
The audio output unit is connected with the main control unit, after the signal amplification that the main control unit is synthesized, pushes away
Dynamic loud speaker sends out prompting sound；
The sound volume regulation unit is connected with each other with the main control unit, realizes volume adjusting or mute；
The indicator unit is connected with the main control unit, indicates whether to be in mute state；
The power supply unit converts vehicle-mounted 12V/24V voltages to 5V voltages, gives other each module for power supply.
Further, the CAN interface unit selects general CAN isolated transceivers CTM8251AT.
Further, the main control unit selects the microcontroller STM32F103R8 of 32 Coretex-M3 kernels.
Further, the audio output unit includes speech chip, loud speaker, the first~the 21st button and first
Resistance, wherein the speech chip selects high-quality MP3 speech chips Y8301-SS0P24MP3, the loud speaker selection to have
The combination loudspeaker of water resistance.
Further, the indicator unit selects red and green color light emitting diode.
Further, the power supply unit selects DC-DC dc switch conversion chips XL1509-5.0E.
(3) advantageous effect
The utility model provides a kind of new-energy automobile based on CAN bus and runs at a low speed reminiscences, when new energy vapour
Vehicle is started to walk and speed is less than 20km/h when driving, its can be simulated according to the driving condition of vehicle and travels sound, to remind outside vehicle
Pedestrian or vehicle actively avoid, and prevent the safety accidents such as personnel's injury and vehicle collision from occurring, it is ensured that the operation of new-energy automobile
Safety, simple in structure, system power dissipation is low, of low cost, stability and good reliability, response quickly, using flexible, has good
Good scalability.
Description of the drawings
Fig. 1 be the utility model involved by a kind of new-energy automobile based on CAN bus run at a low speed reminiscences be
System structure diagram.
Fig. 2 runs at a low speed the CAN of reminiscences for a kind of new-energy automobile based on CAN bus involved by the utility model
Interface unit circuit diagram.
Fig. 3 runs at a low speed the sound of reminiscences for a kind of new-energy automobile based on CAN bus involved by the utility model
Frequency output unit circuit diagram.
Specific implementation mode
The embodiment involved by the utility model is described in further details below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of new-energy automobile based on CAN bus runs at a low speed reminiscences, including CAN interface unit,
Main control unit, audio output unit, sound volume regulation unit, indicator unit and power supply unit；Main control unit passes through CAN interface list
Member is connected with vehicle-mounted CAN bus, acquires the data such as vehicle speed, gear, the left and right turn above vehicle-mounted CAN bus, carries out
Composite tone signal after analyzing is calculated, output is separately connected audio output unit, sound volume regulation unit and indicator unit；Audio
Output unit is connected with main control unit, after the signal amplification of main control unit synthesis, loud speaker is pushed to send out prompting sound；Volume tune
It saves unit to be connected with each other with main control unit, realizes volume adjusting or mute；Indicator unit is connected with main control unit, instruction
Whether mute state is in；Power supply unit converts vehicle-mounted 12V/24V voltages to 5V voltages, gives other each module for power supply.
CAN (controller LAN) is to use one of widest bus in the world, by then passing through differential mode transmission,
Its with simple in structure, transmission range farther out, rate is very fast, number of nodes is free, the characteristics such as safe and reliable, make it in automotive electronics
Field is concerned.CAN bus exchanges information between being designed in ECU (vehicle electronic control unit), to constitute automobile
Electric network.
The data such as onboard sensor equipment collection vehicle speed, gear, left and right turn, and it is total that data are placed on vehicle-mounted CAN
Above line.CAN interface unit is mainly used for completing the communication with CAN bus, receives required data, realizes main control unit and new energy
Noiseless communication between the automotive interior control system of source.CAN interface unit select the very simple general CAN of interface circuit every
From transceiver CTM8251AT, its major function is the differential level for CAN bus by the logic level transition of CAN controller.
In addition, CTM8251AT also has the buffer action between CAN controller and CAN bus, isolated power supply is up to DC2500V.Such as
Shown in Fig. 2, CAN controller is communicated to connect by its UART1 mouthfuls and CAN isolated transceivers U2CTM8251AT, CTM8251AT's
CAN_H feet connect the high data bit of CAN bus, and CAN_L connects low bit.
Main control unit selects the microcontroller STM32F103R8 of 32 Coretex-M3 kernels, the inside up to 256K Flash to deposit
Reservoir, 2.0~3.6V Width funtions and -40~105 DEG C of wide temperature ranges, multiple clock is optional, internal highest 72MHz RC clocks,
Multiple power sources management mode, such as wait for, active shutdown, shut down, 12 ADC of band, 1 road CAN interface, 2 road DAC are I/O mouthfuls multiple
And external interrupt, arithmetic speed is fast, meets the requirement of sound quick response.Powering on for STM32F103R8 is completed with RC reset circuits
It resets, one diode of releasing of parallel connected in reverse phase on resistance, to cope with the rapid fluctuations of power supply.Due to using CAN communication, need
External crystal-controlled oscillation ensures the precision of clock, it is ensured that CAN communication works normally.STM32F103R8 is acquired vehicle-mounted by CAN interface unit
The data such as vehicle speed, gear, left and right turn above CAN bus carry out analysis calculating, Composite tone signal, the audio signal
Frequency changes with speed.
As shown in figure 3, audio output unit includes speech chip U2, loud speaker LS1, button K1~K21 and resistance R1,
Middle speech chip U2 selects high-quality MP3 speech chip Y8301-SS0P24MP3, loud speaker LS1 to select with water resistance
Combination loudspeaker.Y8301-SS0P24MP3 supports MP3, WAV format dual decoding, built-in SPI-Flash as storage medium,
Equipped with Micro USB interfaces, the audio content that computer freely replaces Flash can be connected by data line.And built-in 3W power amplifiers,
The loudspeaker of 3W can be directly driven, it is very easy to use.It supports that standard serial port control, serial ports are 3.3V Transistor-Transistor Logic levels, therefore
It can be connected directly with the UART2 mouths of STM32F103R8.Y8301-SS0P24MP3 there are six trigger I/O port, could support up 21 sections by
The one-to-one triggering of key plays, and button K1~K21 corresponds to 1~21 section of voice.In order to remind goers outside vehicle or vehicle, need in compartment
Outside installation loud speaker, in order to cope with the special circumstances such as rainwater, loud speaker needs to have water resistance.Loud speaker is using high simultaneously
Woofer ensures that high and low frequency sound is exportable, it is ensured that goers outside vehicle or vehicle can under alternative sounds frequency
Perception.
Vehicle may travel the environment to need peace and quiet at hospital, school or night etc., need tone will be reminded low at this time or
It closes, therefore volume adjusting or mute function is carried out by sound volume regulation unit.
It is power supply indicator that indicator unit, which selects red and green color light emitting diode, green, is always on after the power is turned on；Red is quiet
Sound indicator light, when reminding sound volume to be adjusted to mute, indicator light is lighted, and driver is reminded to have been enter into mute state at present.
According to wide power, the requirement of low-power consumption, power supply unit selects DC-DC dc switch conversion chips XL1509-5.0E.
XL1509-5.0E maximum switching currents reach 2A, and working limit voltage is 45V, and reliably working upper voltage limit is 40V, is carried
Stream protection.Due to automobile electronics power supply reverse polarity protection require and this reminiscences real work electric current, power supply just
Pole seals in diode, while a powerful TVS pipe in parallel between power input and ground, can effectively protect subsequent device
It is without damage.
The utility model provides a kind of new-energy automobile based on CAN bus and runs at a low speed reminiscences, when new energy vapour
Vehicle is started to walk and speed is less than 20km/h when driving, its can be simulated according to the driving condition of vehicle and travels sound, to remind outside vehicle
Pedestrian or vehicle actively avoid, and prevent the safety accidents such as personnel's injury and vehicle collision from occurring, it is ensured that the operation of new-energy automobile
Safety, simple in structure, system power dissipation is low, of low cost, stability and good reliability, response quickly, using flexible, has good
Good scalability.
Embodiment described above is only that preferred embodiments of the present invention are described, not to this practicality
Novel conception and scope is defined.Without departing from the design concept of the present utility model, ordinary people in the field couple
The all variations and modifications that the technical solution of the utility model is made, should fall within the protection scope of the present utility model, this reality
With novel claimed technology contents, all record in detail in the claims.
Claims (6)
1. a kind of new-energy automobile based on CAN bus runs at a low speed reminiscences, it is characterised in that：Including CAN interface unit, master
Control unit, audio output unit, sound volume regulation unit, indicator unit and power supply unit；
The main control unit is connected by the CAN interface unit with vehicle-mounted CAN bus, is acquired in the vehicle-mounted CAN bus
The vehicle speed in face, the data of gear, left and right turn, carry out Composite tone signal after calculating analysis, and output is separately connected described
Audio output unit, the sound volume regulation unit and the indicator unit；
The audio output unit is connected with the main control unit, and after the signal amplification that the main control unit is synthesized, promotion is raised
Sound device sends out prompting sound；
The sound volume regulation unit is connected with each other with the main control unit, realizes volume adjusting or mute；
The indicator unit is connected with the main control unit, indicates whether to be in mute state；
The power supply unit converts vehicle-mounted 12V/24V voltages to 5V voltages, to the CAN interface unit, the main control unit,
The audio output unit, the sound volume regulation unit and indicator unit power supply.
2. a kind of new-energy automobile based on CAN bus according to claim 1 runs at a low speed reminiscences, feature exists
In：The CAN interface unit selects general CAN isolated transceivers CTM8251AT.
3. a kind of new-energy automobile based on CAN bus according to claim 1 runs at a low speed reminiscences, feature exists
In：The main control unit selects the microcontroller STM32F103R8 of 32 Coretex-M3 kernels.
4. a kind of new-energy automobile based on CAN bus according to claim 1 runs at a low speed reminiscences, feature exists
In：The audio output unit includes speech chip, loud speaker, the first~the 21st button and first resistor, wherein described
Speech chip selects high-quality MP3 speech chips Y8301-SS0P24MP3, the loud speaker to select the height with water resistance
Sound loud speaker.
5. a kind of new-energy automobile based on CAN bus according to claim 1 runs at a low speed reminiscences, feature exists
In：The indicator unit selects red and green color light emitting diode.
6. a kind of new-energy automobile based on CAN bus according to claim 1 runs at a low speed reminiscences, feature exists
In：The power supply unit selects DC-DC dc switch conversion chips XL1509-5.0E.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721464104.3U CN207711910U (en) | 2017-11-06 | 2017-11-06 | A kind of new-energy automobile based on CAN bus runs at a low speed reminiscences |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721464104.3U CN207711910U (en) | 2017-11-06 | 2017-11-06 | A kind of new-energy automobile based on CAN bus runs at a low speed reminiscences |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207711910U true CN207711910U (en) | 2018-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721464104.3U Expired - Fee Related CN207711910U (en) | 2017-11-06 | 2017-11-06 | A kind of new-energy automobile based on CAN bus runs at a low speed reminiscences |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110816400A (en) * | 2019-09-29 | 2020-02-21 | 浙江合众新能源汽车有限公司 | System and method for prompting running of electric automobile |
| CN110877569A (en) * | 2019-12-03 | 2020-03-13 | 武汉理工大学 | Automobile starting pre-reminding device and method |
-
2017
- 2017-11-06 CN CN201721464104.3U patent/CN207711910U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110816400A (en) * | 2019-09-29 | 2020-02-21 | 浙江合众新能源汽车有限公司 | System and method for prompting running of electric automobile |
| CN110877569A (en) * | 2019-12-03 | 2020-03-13 | 武汉理工大学 | Automobile starting pre-reminding device and method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180810 Termination date: 20181106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |