CN107804168A - A kind of wireless speed limiting system of car - Google Patents
A kind of wireless speed limiting system of car Download PDFInfo
- Publication number
- CN107804168A CN107804168A CN201711204009.4A CN201711204009A CN107804168A CN 107804168 A CN107804168 A CN 107804168A CN 201711204009 A CN201711204009 A CN 201711204009A CN 107804168 A CN107804168 A CN 107804168A
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- unit
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- car
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K31/00—Vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed, i.e. preventing speed from exceeding an arbitrarily established velocity or maintaining speed at a particular velocity, as selected by the vehicle operator
-
- 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
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Human Computer Interaction (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention provides a kind of wireless speed limiting system of car, including road sign emitter and receiver on-board, road sign emitter is arranged at bus driving on the way, and receiver on-board is installed in passenger car cab；Road sign emitter is communicatively coupled with receiver on-board by wireless network.The present invention is based on wireless technology and single-chip microcomputer control technology, realize that audio alert is prompted and cuts off car oil circuit to reach speed limit to hypervelocity, it is not affected by the external environment, function with active dodge accident, fundamentally solves car hypervelocity problem, considerably reduce pernicious traffic accident, and speed-limit road sign utilizes solar powered, the characteristics of with energy-conserving and environment-protective, its is simple in construction, compact, cost is cheap, system power dissipation is low, accuracy of detection is high, respond sensitive, stability and good reliability, scalability is strong, suitable for the hypervelocity problem of different automobile types, automobile is also can be widely used to pursue and capture an escaped prisoner, automobile burglar, violation information is passed on and traffic limitation is broadcasted etc..
Description
Technical field
The present invention relates to Logistics Transportation transportation safety technical field, the wireless speed limiting system of more particularly to a kind of car.
Background technology
Traffic accident easily occurs for the vehicle of hypervelocity, and accident once occurs for car, easily induces the dead group of group and hinders especially big evil
Sexual behavior event, extremely important loss and injury are brought to country, the masses.At present, Siemens have developed a kind of road
Speed(-)limit sign identification device, the device identify the speed(-)limit sign in front using camera, when travel speed is faster than limitation speed,
It will give a warning.The purpose of early warning speed limit can be reached in principle using this device, but this device is in identification speed limit mark
Will is affected because external environment changes often.Device is with regard to nothing especially in the case of rainy days, speed(-)limit sign position difference
Method accurately identifies., can not volitional check travel speed and the device does not possess the function of active dodge accident.Therefore one is needed
The more safe and reliable objective auto electronic speed limiting system of kind, traffic accident incidence caused by hypervelocity is reduced with effective.
The content of the invention
(1) technical problem solved
In order to solve the above problems, the invention provides a kind of wireless speed limiting system of car, based on wireless technology and list
Piece machine control technology, realize that audio alert is prompted and cuts off car oil circuit to reach speed limit to hypervelocity, be not affected by the external environment,
Function with active dodge accident, fundamentally solve car hypervelocity problem, considerably reduce pernicious traffic accident.
(2) technical scheme
A kind of wireless speed limiting system of car, including road sign emitter and receiver on-board, the road sign emitter are set
In bus driving on the way, the receiver on-board is installed in passenger car cab；The road sign emitter and the vehicle-mounted reception
Machine is communicatively coupled by wireless network；
The road sign emitter includes keypad control unit, processor unit, display unit, memory cell, wireless transmission
Unit and solar powered unit；The speed limit value of the keypad control unit setting different automobile types, is stored in the storage
Unit；The display unit shows the speed limit value of different automobile types；The processor unit coordinates each unit work, and passes through
The speed limit value of different automobile types is sent into the wireless network by the wireless transmitting unit；The solar powered unit will too
Sun can be converted into electric energy and be stored, and provide operating voltage to other each units of the road sign emitter；
The receiver on-board includes radio receiving unit, speed data collection unit, audio alert unit, oil path control unit
With vehicle power unit；The radio receiving unit receives the speed limit value of the different automobile types in the wireless network, simultaneously
The speed data collection unit gathers car tach signal and is sent into the radio receiving unit and handled, the wireless receiving list
The tach signal is converted to current vehicle speed value by member, and carries out contrast judgement with the speed limit value of corresponding vehicle；Current vehicle
When speed value exceeds speed limit value, the audio alert unit carries out audio alert prompting；The radio receiving unit passes through institute
State the switch of oil path control unit control car atomizer power supply circuit；The vehicle power unit is to the receiver on-board
Other each units provide operating voltage.
Further, the processor unit selects C8051 single-chip microcomputers；The keypad control unit includes the first~the 4th
Button；The memory cell includes memory, the first electric capacity, the first and second resistance, wherein the memory selects 2K bit strings
Row CMOS EEPROM AT24C02.
Further, the display unit includes 48 segment numeral pipes, charactron driver and the 3rd~the 9th resistance, wherein
The charactron driver selects common cathode charactron driver CD4511.
Further, the wireless transmitting unit includes radio frequency chip, the first crystal oscillator, the second~the 12nd electric capacity and the tenth
~the ten two resistance, wherein the radio frequency chip selects radio transmitting and receiving chip NRF905；The solar powered unit is included too
Positive energy power generation plate and battery.
Further, the radio receiving unit includes wireless singlechip chip, antenna, second and the 3rd crystal oscillator, first
~the four inductance, the 13rd~the 23rd electric capacity and the 13rd resistance, wherein the wireless singlechip chip selects CC1110,
The antenna is single whip antenna.
Further, the speed data collection unit includes vehicle speed sensor, dual operational amplifier, triode, diode, the
14~the 22nd resistance and the 24th~the 26th electric capacity, wherein the vehicle speed sensor selects CSHG-06 Halls
Effect speed probe, the dual operational amplifier select LM258, and the diode is Schottky diode, and the described 20th
Four and the 26th electric capacity be electrochemical capacitor.
Further, the audio alert unit includes speech chip, loudspeaker, the 4th crystal oscillator, the 27th~the 3rd
The resistance of 13 electric capacity, the 23rd and the 24th, wherein the speech chip selects ML22865, the described 27th and
30 electric capacity are electrochemical capacitor.
Further, the oil path control unit is relay；The vehicle power unit includes vehicle-mounted 5V power supplys, linear
Voltage-stablizer, light emitting diode, the 34th electric capacity and the 25th resistance, wherein the linear voltage regulator selects REG1117-
33, the 34th electric capacity is electrochemical capacitor.
(3) beneficial effect
The invention provides a kind of wireless speed limiting system of car, based on wireless technology and single-chip microcomputer control technology, to super
Speed realizes that audio alert is prompted and cuts off car oil circuit to reach speed limit, is not affected by the external environment, and has active dodge accident
Function, fundamentally solve car hypervelocity problem, considerably reduce pernicious traffic accident, and speed-limit road sign utilizes the sun
It can power, there is the characteristics of energy-conserving and environment-protective, its is simple in construction, and compact, cost is cheap, and system power dissipation is low, and accuracy of detection is high,
Respond sensitive, stability and good reliability, scalability is strong, suitable for the hypervelocity problem of different automobile types, also can be widely used to
Automobile is pursued and captured an escaped prisoner, automobile burglar, violation information are passed on and traffic limitation is broadcasted etc..
Brief description of the drawings
Fig. 1 is a kind of structured flowchart of the wireless speed limiting system of car involved in the present invention.
Fig. 2 is a kind of road sign emitter keypad control unit circuit of the wireless speed limiting system of car involved in the present invention
Schematic diagram.
Fig. 3 is a kind of road sign emitter storage unit circuit principle of the wireless speed limiting system of car involved in the present invention
Figure.
Fig. 4 is a kind of road sign emitter display unit circuit principle of the wireless speed limiting system of car involved in the present invention
Figure.
Fig. 5 is a kind of road sign emitter wireless transmitting unit circuit of the wireless speed limiting system of car involved in the present invention
Schematic diagram.
Fig. 6 is a kind of receiver on-board radio receiving unit circuit of the wireless speed limiting system of car involved in the present invention
Schematic diagram.
Fig. 7 is a kind of receiver on-board speed data collection element circuit of the wireless speed limiting system of car involved in the present invention
Schematic diagram.
Fig. 8 is a kind of receiver on-board audio alert element circuit of the wireless speed limiting system of car involved in the present invention
Schematic diagram.
Fig. 9 is a kind of receiver on-board vehicle power element circuit of the wireless speed limiting system of car involved in the present invention
Schematic diagram.
Embodiment
Embodiment involved in the present invention is described in further details below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of wireless speed limiting system of car, including road sign emitter and receiver on-board, road sign transmitting
Machine is arranged at bus driving on the way, and receiver on-board is installed in passenger car cab；Road sign emitter passes through with receiver on-board
Wireless network is communicatively coupled.
Road sign emitter includes keypad control unit, processor unit, display unit, memory cell, wireless transmitting unit
And solar powered unit；Keypad control unit sets the speed limit value of different automobile types, is stored in memory cell；Display unit
Show the speed limit value of different automobile types；Processor unit coordinates each unit work, and by wireless transmitting unit by different cars
The speed limit value of type is sent into wireless network；Solar powered unit, which converts solar energy into electrical energy, to be stored, and gives road sign
Other each units of emitter provide operating voltage.
Receiver on-board includes radio receiving unit, speed data collection unit, audio alert unit, oil path control unit and car
Carry power subsystem；Radio receiving unit receives the speed limit value of the different automobile types in wireless network, while speed data collection unit
Gather car tach signal and be sent into radio receiving unit and handled, tach signal is converted to current vehicle by radio receiving unit
Speed value, and carry out contrast judgement with the speed limit value of corresponding vehicle；When current vehicle speed value exceeds speed limit value, audio alert
Unit carries out audio alert prompting；Radio receiving unit controls opening for car atomizer power supply circuit by oil path control unit
Close；Vehicle power unit provides operating voltage to other each units of receiver on-board.
Processor unit selects C8051 single-chip microcomputers, is the microcontroller of minimum encapsulation in the industry, will not sacrifice performance or integrated
Property.Complete compact package product include up to 100MIPs CPU, 8~12 multichannel ADC, 12,1~2 tunnel DAC, 8~
64 universaling I/O ports and other important analog peripherals equipment, as Precision Integrated oscillator (± 2%) and precision temperature sense
Device (± 2 DEG C).Operating voltage is 2.7~3.6V, and pin allows 5V control sources, and internal flash storage can deposit as program
Reservoir can also make non-volatile data storage.The space that C8051 is specifically applied in consumption, automobile and communications market is limited, low
In the application of power consumption and low cost, exploitation is simple and quick.
As shown in Fig. 2 keypad control unit includes button K1~K4.C8051 P1.2~P1.4 pin represent Keyboard Control
Unit uses 4 Independent keys, and respectively Truck type choice key, numerical value increase key, numerical value reduces key and acknowledgement key.C8051 is continuous
The level of cycle detection P1.2~P1.4 pin, represent that corresponding button is pressed when detecting that a wherein pin level is low.In view of
Current national conditions, vehicle may be designated as compact car, in-between car, large car and other vehicles, set not according to vehicle and road conditions
Same standard of the limited speed.
Different automobile types and speed limit value are stored in memory cell, as shown in figure 3, memory cell include memory U1,
Electric capacity C1, resistance R1 and R2, wherein memory U1 select 2K Bits Serial CMOS EEPROM AT24C02.It has 2KB storages empty
Between, connected using EEPROM bus structures and C8051 P1.0 and P1.1 pin.After the upper electricity of C8051, to the number of AT24C02 storages
According to being read.
Display unit shows different automobile types and speed limit value, as shown in figure 4, display unit includes 48 segment numeral pipes
Dp1, charactron driver U2 and resistance R3~R9, wherein charactron driver U2 select common cathode charactron driver
CD4511.Display unit shows that 1 expression different automobile types, remaining 3 represent speed limit values using 48 segment numeral pipe Dp1.
Display data is provided by C8051 P0 mouths, the control mouth of C8051 P2 mouths as charactron Dp1, for power saving, charactron
Dp1 is only just lighted when by lower keyboard, and when no longer operation keyboard in certain time, charactron Dp1 extinguishes.
The speed limit Value Data bag of different automobile types is continually transmitted away by C8051 circulations with wireless transmitting unit.
As shown in figure 5, wireless transmitting unit includes radio frequency chip U3, crystal oscillator X1, electric capacity C2~C12 and resistance R10~R12, wherein penetrating
Frequency chip U3 selects radio transmitting and receiving chip NRF905.In view of the design requirement of miniaturization, integrated, high accuracy and low-power consumption,
The monolithic transceiving chip NRF905 for integrating transmitting and receiving is employed, the chip emission frequency can be 433/868/
915MHz, flank speed 20KB/s, communication distance is up to 300~800m.In order to realize crystal oscillator low-power consumption and quick
Start, selected 16MHz crystal oscillator X1, biasing resistors of the resistance R12 as crystal oscillator X1.ANT1 and ANT2 output pins carry to antenna
Exported for stable RF.The electric capacity to connect with VDD pin uses the RF filter capacitors of high quality, the other end with the composition that connects go
Coupling electric capacity.The packet that C8051 is read is supplied to NRF905 to launch with 915MHz via SPI mouths.
Because road sign emitter is installed on open-air atmosphere, its power supply can utilize solar power generation, reach energy-saving ring
The design concept of guarantor.Solar powered unit includes solar panel and battery, and solar panel is installed on road sign hair
The top of machine is penetrated, solar energy can be fully gathered, be stored in high-capacity lithium-ion battery after rectified filtering, realize to hair
Penetrate machine other units and operating voltage is provided.
When car passes through road sign transmitter signal coverage, the receiver on-board receiver/transmitter in passenger car cab
The data packet signal launched.As shown in fig. 6, radio receiving unit includes wireless singlechip chip U4, antenna E1, crystal oscillator X2
With X3, inductance L1~L4, electric capacity C13~C23 and resistance R13, wherein wireless singlechip chip U4 selects CC1110, the antenna
For single whip antenna.In order to simplify design, wireless singlechip selects the CC1110 wireless singlechip chips of Chipcon companies, the core
Piece contains 8051MCU and 1 radio transmitting and receiving chip of 1 standard, has low-power consumption, low cost, the advantage of high reliability.Its
Working frequency is 315/433/868/915MHz, maximum transmission rate 500KB/s, 1.8~3.6V of operating voltage, is received sensitive
Degree -110dB.26MHz crystal oscillators X2, electric capacity C14 and C15 composition CC1110 high-speed clock source, 32.768KHz crystal oscillators X3, electric capacity
C16 and C17 composition low-speed clocks source.Electric capacity C18~C23 and inductance L1~L4 completes to convert the signal into single-ended RF signal, with
50 Europe antenna E1 coordinate.Resistance R13 is used for setting accurate bias current.Antenna E1 selection has sizable to reception distance
Influence, to ensure the reliable and stable of wireless signal, antenna E1 is from reception and the stronger single whip antenna of emissivities.CC1110 with
915MHz receives the packet of road sign emitter transmitting, and is temporarily stored into internal flash storage.
Car current vehicle speed can be measured by vehicle speed sensor, and wheel, which often rotates one week, can then export a number of arteries and veins
Punching, these pulses of accurate judgement are crucial.As shown in fig. 7, speed data collection unit includes vehicle speed sensor, dual operational amplifier
U5, triode Q1, diode D1, resistance R14~R22 and electric capacity C24~C26, wherein vehicle speed sensor select CSHG-06 Halls
Effect speed probe, it is Schottky diode that dual operational amplifier U5, which selects LM258, diode D1, and electric capacity C24 and C26 are
Electrochemical capacitor.The key property of CSHG-06 Hall effect speed probes is fixed precession length；Measure low frequency signal；Temperature
It is wide to spend scope；Integrated short circuit and Antimagnetic protection；8~36V of operating voltage；Fixed precession length 0.5mm；Operating temperature -40~+
120℃.There is high sensitivity, precision height, small volume, strong antijamming capability.Filtered first by the RC of circuit front-end
High-frequency Interference is removed, by follower U5a, then by comparator U5b circuit outputs, controls the triode Q1 of rear end break-make,
Stable pulse signal is produced, the P1.0 pin for being sent into CC1110 are handled, and calculate the current vehicle speed of car.
CC1110 judges the current vehicle speed of car compared with the speed limit value of corresponding vehicle, during if hypervelocity,
Send audio alert prompting.As shown in figure 8, audio alert unit includes speech chip U6, loudspeaker SPK1, crystal oscillator X4, electric capacity
C27~C33, resistance R23 and R24, wherein speech chip U6 select ML22865, and electric capacity C27 and C30 are electrochemical capacitor.
ML22865 is the speech chip with power amplifier, SCL, SDA and CBUSYB pin of its chip be respectively connected to CC1110 I/O mouths P2.1,
P2.2 and P2.3 pin, SPM and SPP pin external loudspeakers SPK1.30s hypervelocity delays can be designed, is mainly used in automobile and overtakes other vehicles in short-term,
Recover normally travel speed after overtaking other vehicles, audio alert prompting disappears.
Car is acted still in overspeed condition, CC1110 control oil path control units after audio alert prompts 30s,
The work of car atomizer power supply circuit is cut off, so as to reach the purpose of speed limit.Oil path control unit is relay, control car spray
The switch of oil nozzle power supply circuit.CC1110 I/O mouths output high level control relay is connected, and car atomizer power supply circuit can
To keep normal work, output low level control relay disconnects, the power supply circuit work of cut-out car atomizer.
As shown in figure 9, vehicle power unit includes vehicle-mounted 5V power supplys, linear voltage regulator U7, LED 1, electric capacity
It is electrochemical capacitor that C34 and resistance R25, wherein linear voltage regulator U7, which select REG1117-33, electric capacity C34,.Receiver on-board uses
5V lithium batteries are powered to speed data collection unit and audio alert unit, due to CC1110 operating voltages for 3.3V, it is necessary to will
5V lithium batteries are converted to 3.3V by linear voltage regulator REG1117-33.
When system works, road sign emitter constantly broadcasts the speed limit value of different automobile types, when car is believed by emitter
During number scope, receiver on-board receives and stores speed limit.The CC1110 of receiver on-board calculates the current vehicle speed compared with, if
Hypervelocity then carries out audio alert prompting, and receiver on-board sends control signal cut-out car atomizer fuel feeding after the 30s that exceeds the speed limit.Car
Speed can reduce after cut-out fuel feeding, and receiver on-board sends control signal recovery car atomizer and supplied when less than speed limit value
Oil.So, the car 30s that at most exceeds the speed limit will decelerate to normal speed, fundamentally solve the problems, such as car hypervelocity, greatly
Reduce pernicious traffic accident.
The invention provides a kind of wireless speed limiting system of car, based on wireless technology and single-chip microcomputer control technology, to super
Speed realizes that audio alert is prompted and cuts off car oil circuit to reach speed limit, is not affected by the external environment, and has active dodge accident
Function, fundamentally solve car hypervelocity problem, considerably reduce pernicious traffic accident, and speed-limit road sign utilizes the sun
It can power, there is the characteristics of energy-conserving and environment-protective, its is simple in construction, and compact, cost is cheap, and system power dissipation is low, and accuracy of detection is high,
Respond sensitive, stability and good reliability, scalability is strong, suitable for the hypervelocity problem of different automobile types, also can be widely used to
Automobile is pursued and captured an escaped prisoner, automobile burglar, violation information are passed on and traffic limitation is broadcasted etc..
The above-described embodiments are merely illustrative of preferred embodiments of the present invention, not to the structure of the present invention
Think and scope is defined.On the premise of design concept of the present invention is not departed from, technology of the ordinary people in the field to the present invention
The all variations and modifications that scheme is made, all should drop into protection scope of the present invention, the claimed technology contents of the present invention,
All record in detail in the claims.
Claims (8)
- A kind of 1. wireless speed limiting system of car, it is characterised in that：Including road sign emitter and receiver on-board, the road sign hair The machine of penetrating is arranged at bus driving on the way, and the receiver on-board is installed in passenger car cab；The road sign emitter with it is described Receiver on-board is communicatively coupled by wireless network；The road sign emitter includes keypad control unit, processor unit, display unit, memory cell, wireless transmitting unit And solar powered unit；The speed limit value of the keypad control unit setting different automobile types, is stored in the memory cell； The display unit shows the speed limit value of different automobile types；The processor unit coordinates each unit work, and by described The speed limit value of different automobile types is sent into the wireless network by wireless transmitting unit；The solar powered unit is by solar energy It is converted into electric energy to be stored, and operating voltage is provided to other each units of the road sign emitter；The receiver on-board includes radio receiving unit, speed data collection unit, audio alert unit, oil path control unit and car Carry power subsystem；The radio receiving unit receives the speed limit value of the different automobile types in the wireless network, while described Speed data collection unit gathers car tach signal and is sent into the radio receiving unit and handled, and the radio receiving unit will The tach signal is converted to current vehicle speed value, and carries out contrast judgement with the speed limit value of corresponding vehicle；Current vehicle speed value During beyond speed limit value, the audio alert unit carries out audio alert prompting；The radio receiving unit passes through the oil The switch of road control unit control car atomizer power supply circuit；The vehicle power unit is other to the receiver on-board Each unit provides operating voltage.
- A kind of 2. wireless speed limiting system of car according to claim 1, it is characterised in that：The processor unit is selected C8051 single-chip microcomputers；The keypad control unit includes the first~the 4th button；The memory cell includes memory, the first electricity Hold, the first and second resistance, wherein the memory selects 2K Bits Serial CMOS EEPROM AT24C02.
- A kind of 3. wireless speed limiting system of car according to claim 1, it is characterised in that：The display unit includes 4 8 segment numeral pipes of position, charactron driver and the 3rd~the 9th resistance, wherein the charactron driver is driven from common cathode charactron Dynamic device CD4511.
- A kind of 4. wireless speed limiting system of car according to claim 1, it is characterised in that：The wireless transmitting unit bag Radio frequency chip, the first crystal oscillator, the second~the 12nd electric capacity and the tenth~the 12nd resistance are included, wherein the radio frequency chip selects nothing Line transceiving chip NRF905；The solar powered unit includes solar panel and battery.
- A kind of 5. wireless speed limiting system of car according to claim 1, it is characterised in that：The radio receiving unit bag Include wireless singlechip chip, antenna, second and the 3rd crystal oscillator, the first~the four inductance, the 13rd~the 23 electric capacity and 13 resistance, wherein the wireless singlechip chip selects CC1110, the antenna is single whip antenna.
- A kind of 6. wireless speed limiting system of car according to claim 1, it is characterised in that：The speed data collection unit bag Include vehicle speed sensor, dual operational amplifier, triode, diode, the 14th~the 22nd resistance and the 24~the second 16 electric capacity, wherein the vehicle speed sensor selects CSHG-06 Hall effect speed probes, the dual operational amplifier is selected LM258, the diode are Schottky diode, and the 24th and the 26th electric capacity is electrochemical capacitor.
- A kind of 7. wireless speed limiting system of car according to claim 1, it is characterised in that：The audio alert unit bag Speech chip, loudspeaker, the 4th crystal oscillator, the 27th~the 33rd electric capacity, the 23rd and the 24th resistance are included, wherein The speech chip selects ML22865, and the 27th and the 30th electric capacity is electrochemical capacitor.
- A kind of 8. wireless speed limiting system of car according to claim 1, it is characterised in that：The oil path control unit is Relay；The vehicle power unit includes vehicle-mounted 5V power supplys, linear voltage regulator, light emitting diode, the 34th electric capacity and the 25 resistance, wherein the linear voltage regulator selects REG1117-33, the 34th electric capacity is electrochemical capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711204009.4A CN107804168A (en) | 2017-11-27 | 2017-11-27 | A kind of wireless speed limiting system of car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711204009.4A CN107804168A (en) | 2017-11-27 | 2017-11-27 | A kind of wireless speed limiting system of car |
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| Publication Number | Publication Date |
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| CN107804168A true CN107804168A (en) | 2018-03-16 |
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ID=61581952
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711204009.4A Withdrawn CN107804168A (en) | 2017-11-27 | 2017-11-27 | A kind of wireless speed limiting system of car |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109291795A (en) * | 2018-11-26 | 2019-02-01 | 张晶 | One kind being based on Embedded limiting vehicle speed equipment |
| CN110874949A (en) * | 2018-08-29 | 2020-03-10 | 李德一 | Device for facilitating vehicle to run at optimal running speed |
-
2017
- 2017-11-27 CN CN201711204009.4A patent/CN107804168A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110874949A (en) * | 2018-08-29 | 2020-03-10 | 李德一 | Device for facilitating vehicle to run at optimal running speed |
| CN109291795A (en) * | 2018-11-26 | 2019-02-01 | 张晶 | One kind being based on Embedded limiting vehicle speed equipment |
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