CN205916086U - Automatic sleet moral integrity device that removes of automobile rearview mirror based on lamb wave - Google Patents
Automatic sleet moral integrity device that removes of automobile rearview mirror based on lamb wave Download PDFInfo
- Publication number
- CN205916086U CN205916086U CN201620825458.5U CN201620825458U CN205916086U CN 205916086 U CN205916086 U CN 205916086U CN 201620825458 U CN201620825458 U CN 201620825458U CN 205916086 U CN205916086 U CN 205916086U
- Authority
- CN
- China
- Prior art keywords
- wave
- piezoelectric ceramic
- lamb wave
- ceramic transducer
- paster
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 235000019687 Lamb Nutrition 0.000 title claims abstract description 58
- 239000000919 ceramic Substances 0.000 claims abstract description 88
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 230000000644 propagated effect Effects 0.000 claims abstract description 4
- 238000002604 ultrasonography Methods 0.000 claims description 19
- 230000005669 field effect Effects 0.000 claims description 16
- 239000004065 semiconductor Substances 0.000 claims description 16
- 229910044991 metal oxide Inorganic materials 0.000 claims description 15
- 150000004706 metal oxides Chemical class 0.000 claims description 15
- 238000003860 storage Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- 229910052573 porcelain Inorganic materials 0.000 claims description 2
- 230000001902 propagating effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 230000005611 electricity Effects 0.000 description 7
- 239000004531 microgranule Substances 0.000 description 5
- 238000010257 thawing Methods 0.000 description 5
- 230000009466 transformation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000011897 real-time detection Methods 0.000 description 4
- 238000010792 warming Methods 0.000 description 4
- 230000002463 transducing effect Effects 0.000 description 3
- 210000004709 eyebrow Anatomy 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000006072 paste Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000606 toothpaste Substances 0.000 description 1
- 229940034610 toothpaste Drugs 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
Abstract
The utility model provides an automatic sleet moral integrity device that removes of automobile rearview mirror based on lamb wave launches the detection lamb wave of propagating from top to bottom along rearview mirror's mirror surface, when the wave amplitude changes, removes sleet moral integrity lamb wave promotion rain drops and breaks away from the rearview mirror mirror surface, perhaps, remove sleet moral integrity lamb wave along what rearview mirror's mirror surface setting was propagated from top to bottom, the piezoelectric ceramic transducer paster generates heat, the mirror surface that makes rearview mirror with snow, with fixed attention ice or the critical face that frosts on snow, ice or frost melt to the aqueous water, promote the mirror surface that snow, ice or frost break away from rearview mirror. This device utilize to remove sleet moral integrity lamb wave and promotes rain drops, snow, ices or frost and break away from the rearview mirror mirror surface with fixed attention, no matter does not all have the phenomenon that the mirror surface congeals the fog with the wind against the wind and takes place, and fundamentally eliminates rainy day and the fuzzy and potential safety hazard that arouses of rear -view mirror in winter.
Description
Technical field
This utility model is related to a kind of automobile rearview mirror and automatically removes sleet frost device, more particularly, to blue nurse ultrasound wave.
Background technology
Automobile rearview mirror is the important component in automotive safety configuration, for driver, rear vehicle condition, road conditions is judged to provide
Important auxiliary foundation, keep rearview mirror totally clear it is critical that.But in rainy day or foggy weather, on rearview mirror very
Easily hang up many water droplets, minute surface becomes to obscure very much, driver can only see roughly rear vehicle condition, driver is to spacing for impact
Judgement, to overtaking other vehicles and road brings suitable trouble, there is serious traffic safety hidden danger.Or in northern Cold Winter,
Meeting accumulated snow, solidifying ice or frosting on rearview mirror, the existing stage can only defrost in manual deicing, causes very big fiber crops before travelling to driver
Tired.
Presently, also no provide rearview mirror and hang up raindrop or the vapour of the icing frosting impact absolute solution of traffic safety
Depot business.Remove this problem of rain for automobile rearview mirror, generally have several solutions as follows at present:
First, traditional method installs rearview mirror rain eyebrow additional.Due to the thickness of rain eyebrow, if be arranged in rearview mirror frame
The regulation of rearview mirror if side, can be affected, be therefore typically mounted at outside.The method effect when inverse rain travels is pretty good,
But if force of rain driving, minute surface still can be stained with rainwater, and due to being to be bonded on rearview mirror using glue, have de-
The risk falling；
2nd, the method for domestic smears eliminating water thing.Be typically chosen is the article with surfactant, such as soap,
Liquid detergent, toothpaste etc..Make advantage in this way be economical convenient, but shortcoming is also obvious, after smearing eliminating water thing, after
Not do not hang raindrop on visor eyeglass, but form water membrane, also can affect the visual field, also have certain ageing simultaneously, one
As about 2 hours effect just become excessively poor；
3rd, other scheme electrical heating, vibrations, hair dryers etc..The effect of this kind of scheme is also undesirable to implement hardly possible simultaneously
Degree is higher, is not therefore that rearview mirror removes rain best solution.
Defrost this problem for automobile rearview mirror deicing, generally have several schemes as follows: one, traditional side at present
Method is removed manually.The method is possible to not clean up, and clearance time is long, freezes handss etc., makes troubles to user；
2nd, other scheme electrical heating, hair dryers etc..The also more difficult acquisition of undesirable power supply simultaneously of the effect of this kind of scheme, it is difficult to implement
Degree is higher, is not therefore the best solution of rearview mirror deicing defrosting.
At present, also have using ultrasound wave except rain technology is applied on automobile rearview mirror, but current apparatus structure is main
There is a following both sides defect:
One be prior art be all using ultrasound wave vaporize rearview mirror on raindrop, make fog depart from minute surface, no
The ultrasonic energy only needing is higher, needs to expend substantial amounts of automobile storage battery electricity, and automobile is when sailing with the wind, fog
Easily again being set on minute surface, thus leading to minute surface to be atomized, affecting the observing effect of rearview mirror on the contrary；
Two is that prior art is all configured with rain sensor on rearview mirror, or manually controls and manually start and remove
Rain, the former can make whole device structure more complicated, reliability reduces, and the latter can increase the complexity of driving further.
Utility model content
Technical problem to be solved in the utility model is to provide one kind can utilize ultrasound wave real-time detection rearview mirror
Surface conditions simultaneously excite automatically, remove the device of sleet frost, and structure is simple, good reliability, and power consumption is low.
This utility model is achieved through the following technical solutions:
A kind of automobile rearview mirror based on Lamb wave automatically remove sleet frost device, described automobile rearview mirror include housing and
Backsight eyeglass it is characterised in that:
It is organized in pairs at least one pair of in the upper and lower both sides on the same surface of backsight eyeglass as the upper piezoelectricity of Lamb wave transmitting terminal
Ceramic transducer paster and the lower piezoelectric ceramic transducer paster as Lamb wave receiving terminal；
The drive circuit that in cavity between described backsight eyeglass and housing, configuration is powered by automobile storage battery and reception are anti-
Current feed circuit, drive circuit and the electrical connection of upper piezoelectric ceramic transducer paster, receive feedback circuit electrical connection and push electroceramics transducing
Device paster and drive circuit；
Described device includes two kinds automatically except rain working condition and two kinds of working conditions of automatic snow frost:
When automatically removing rain working condition, upper piezoelectric ceramic transducer paster is launched along minute surface on the upside of the minute surface of backsight eyeglass
The detection Lamb wave from top to bottom propagated, described detection Lamb wave be by drive circuit tranmitting frequency be 980khz～
1023khz, driving voltage is that the AC signal of 20vpp～80vpp is applied on piezoelectric ceramic transducer paster, makes piezoelectricity
Ceramic transducer paster high frequency ultrasound is vibrated and is produced,
When receive feedback circuit receive travel to lower piezoelectric ceramic transducer paster signal wave wave amplitude be equal to or
When being less than set wave amplitude 60%, receive feedback circuit transmission and feed back signal to drive circuit, the exchange of drive circuit transmitting
Signal frequency range keeps constant, and driving voltage is increased to 100vpp～300vpp, so that piezoelectric ceramic transducer paster high frequency is surpassed
Sonic vibration, produce along backsight eyeglass minute surface from top to bottom propagate except sleet frost Lamb wave,
Except sleet frost Lamb wave makes to produce acoustic streaming inside the raindrop being attached on backsight eyeglass minute surface, sound wave is in raindrop
The compressional wave producing orders about raindrop relative to occurring backsight eyeglass minute surface to move, thus promoting raindrop to depart from backsight eyeglass minute surface；
During automatic snow frost working condition, upper piezoelectric ceramic transducer paster is launched by upper along the minute surface of backsight eyeglass
To lower propagation except sleet frost Lamb wave, except sleet frost Lamb wave be by drive circuit tranmitting frequency be 980khz～
1023khz, driving voltage is that the AC signal of 100vpp～300vpp is applied on piezoelectric ceramic transducer paster, makes pressure
Electroceramics transducer paster high frequency ultrasound is vibrated and is produced,
Upper piezoelectric ceramic transducer paster heating, makes on the minute surface of backsight eyeglass and the critical surface of accumulated snow, solidifying ice or frosting
Snow, ice or frost melt as aqueous water, meanwhile, except sleet frost Lamb wave makes to produce acoustic streaming inside aqueous water, sound wave is in liquid
The compressional wave producing in water drives the snow floating on aqueous water, ice or frost to be moved, thus promoting snow, ice or frost to depart from backsight
The minute surface of eyeglass.
When described setting wave amplitude does not usually have drop to be attached on backsight eyeglass, receive the propagation that feedback circuit receives
Signal wave wave amplitude on the downside of the minute surface of backsight eyeglass.
Further, described feedback signal be tranmitting frequency be 980khz～1023khz, output voltage for 100vpp～
The AC signal of 300vpp.
Because the principle of this method is to promote raindrop, accumulated snow, solidifying ice or frosting to depart from backsight eyeglass minute surface using Lamb wave,
Rather than vaporized the disengaging backsight eyeglass minute surface that nebulizes, therefore remove for rain technology with respect to existing ultrasound wave, need to expend
Automobile storage battery electricity less, piezoelectric ceramic transducer paster volume can less just can reach preferably except sleet frost
Effect, and do not have the hidden danger that minute surface coagulates mist；Additionally, by detecting Lamb wave real-time monitoring surface conditions, need not additionally join
Put rain sensor, the simpler reliability of whole device, and excite the AC signal voltage detecting Lamb wave very low, also will not
Expend excessive automobile storage battery electricity.
Further, described drive circuit includes manostat, signal generator, and Metal-Oxide Semiconductor field effect is brilliant
Body pipe mosfet, transformator and wave amplitude controller；Accumulator, manostat, Metal-Oxide Semiconductor field-effect transistor
Mosfet, transformator, wave amplitude control module and upper piezoelectric ceramic transducer paster sequentially electrically connect, signal generator electrical connection gold
Genus-oxide semiconductor field effect transistor mosfet；Described reception feedback circuit includes amplifying circuit, filter circuit, automatically
Control gain circuitry, sampling hold circuit and voltage comparator circuit；Lower piezoelectric ceramic transducer paster passes through amplifying circuit, filtering
Circuit, automatically controls gain circuitry, and sampling hold circuit and voltage comparator circuit are electrically connected after sequentially electrically connecting the described driving of access
Between circuit and accumulator.
Further, the input voltage of described Metal-Oxide Semiconductor field-effect transistor is the automobile storage of 12～18v
Battery DC voltage, input waveform is the output waveform of signal generator；Metal-Oxide Semiconductor field-effect transistor exports
Waveform is identical with input waveform, and maximum output voltage is 12～18v alternating voltage.
Piezoelectric ceramic transducer paster is directly bonded on the upper and lower both sides of backsight front lens surface (exposed face) or the back side, drives
Galvanic electricity road is fixed on back-mirror housing inside and is connected with upper piezoelectric ceramic transducer paster by electric wire.Whole system passes through car
Body storage battery power supply, 12v～18v direct current that accumulator is provided by Metal-Oxide Semiconductor field-effect transistor (mosfet)
The signal of voltage and the various waveforms of signal generator is integrated, and the 980khz of output and signal generator same waveform～
1023khz, 20vpp～80vpp about AC signal, this AC signal is applied to the upper piezoelectric ceramics transducing on the upside of rearview mirror
On device paster, make piezoelectric ceramics that high frequency ultrasound vibration to occur, produce the detection Lamb wave along rearview mirror surface delivery.Backsight
Lower piezoelectric ceramic paster on the downside of mirror is used for real-time supervision and detects Lamb wave wave amplitude for real-time detection raindrop, when reception feedback
The signal wave wave amplitude that the lower piezoelectric ceramic paster that circuit receives is detected is equal to or less than did not had drop to be attached to backsight originally
The signal wave wave amplitude that on eyeglass, piezoelectric ceramics paster is detected at present 60% when (microgranule such as raindrop causes), after being equally fixed on
The visor enclosure interior reception feedback circuit that is connected with lower piezoelectric ceramic transducer paster by electric wire triggers driving electricity automatically
Road so as to produce 980khz～1023khz, 100vpp～300vpp about AC signal to excite upper piezoelectric ceramic transducer
Paster produces and removes sleet frost Lamb wave, when running into the microgranules such as raindrop in transmitting procedure except sleet frost Lamb wave, due to
The patten transformation of sound wave, makes to produce acoustic streaming inside raindrop, and the compressional wave that sound wave produces in raindrop orders about raindrop and quick shifting occurs
Dynamic, thus departing from backsight eyeglass mirror mirror.When winter running into the problem of deicing defrosting, by vehicle body storage battery power supply,
12v～18v voltage that accumulator is provided by Metal-Oxide Semiconductor field-effect transistor (mosfet) and signal generator
The signal of various waveforms is integrated, and output and 980khz～1023khz, the 100vpp of signal generator same waveform～
300vpp about AC signal, this AC signal is applied on piezoelectric ceramic transducer paster so as to generating heat and height occurring
Frequency supersonic vibration, when the snow of backsight lens surface and frost critical part, ice or frost melt as aqueous water, due to the pattern of sound wave
Conversion, makes liquid internal produce acoustic streaming, and the compressional wave that sound wave produces in aqueous water drives snow, ice or frost to occur quickly to move,
Thus departing from the minute surface of backsight eyeglass.
Further, the output waveform of described signal generator is sine wave, cosine wave, square wave or triangular wave.
Further, described upper piezoelectric ceramic transducer paster and lower piezoelectric ceramic transducer paster are three right, single patches
Plate shape size is the cuboid paster of 25mm × 1mm × 1mm for length x width x thickness, and paster is laterally covered on rearview mirror
On piece.
The beneficial effects of the utility model are:
1st, this device promotes raindrop, accumulated snow, solidifying ice or frosting to depart from backsight eyeglass minute surface using except sleet frost Lamb wave,
No matter all do not have the phenomenon generation that minute surface coagulates mist against the wind with the wind, be inherently eliminated the rainy day and winter rearview mirror obscures and causes
Potential safety hazard；
2nd, remove for rain technology with respect to existing ultrasound wave, this method and device need to expend except sleet frost principle
Automobile storage battery electricity is less, and piezoelectric ceramic transducer paster volume can be less, reduces production and use cost；
3rd, whole device structure is simpler, good reliability, compact conformation, small volume, and installing need not be to existing during configuration
Backsight eyeglass carries out destructive dismounting；
4th, pass through detection Lamb wave and automatically detect surface conditions, without additional configuration rain sensor, excite the blue nurse of detection
The AC signal voltage of ripple is very low, also will not expend excessive automobile storage battery electricity, not result in larger added burden.
Brief description
Fig. 1 is a kind of piezoelectric ceramic transducer paster installation site schematic perspective view of preferred structure of this utility model
Fig. 2 is circuit structure diagram
Fig. 3 is stress diagram in Fig. 1 device for the raindrop
Fig. 4 is the top view of Fig. 3
Fig. 5 is except the shift position schematic diagram of different time raindrop during rain
Fig. 6 is the piezoelectric ceramic transducer paster installation site schematic perspective view of this utility model another kind preferred structure
Fig. 7 is stress diagram in Fig. 6 device for the raindrop
Fig. 8 is the top view of Fig. 7
In Fig. 1～8: 101 is upper piezoelectric ceramic transducer paster, 201 is lower piezoelectric ceramic transducer paster, and 3 is backsight
Eyeglass, 4 is rearview mirror fixed disk, and 5 adjust rotating disk for mirror body direction, and 6 is housing, and 7 is raindrop, and 8,9 and 10 are respectively raindrop
Position in different time.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Fig. 1, Fig. 6: automobile rearview mirror includes back-mirror housing 6, backsight eyeglass 3, reflecting mirror fixed disk 4 and mirror body
Direction adjustment rotating disk 5 etc., rearview mirror fixed disk 4 adjusts rotating disk 5 with mirror body direction and is connected, and mirror body direction adjusts rotating disk 5
It is fixed on back-mirror housing 6.Drive circuit and reception feedback circuit have carried out Integration Design, occupy little space, permissible
Design circlewise, be arranged on adjustment rotating disk 5 outer ring, with backsight eyeglass 3 on upper piezoelectric ceramic transducer paster 101 and under
Piezoelectric ceramic transducer paster 201 is connected.
Embodiment 1
As shown in figure 1, upper piezoelectric ceramic transducer paster 101 and lower piezoelectric ceramic transducer paster 201 are bonded respectively
In the both sides up and down in backsight eyeglass 3 minute surface front (exposed face), drive circuit is separately fixed at rearview mirror with receiving feedback circuit
Housing 6 is internal and is connected with upper piezoelectric ceramic transducer paster 101, lower piezoelectric ceramic transducer paster 201 respectively by electric wire.
Whole device passes through vehicle body storage battery power supply, and Metal-Oxide Semiconductor field-effect transistor (mosfet) will store
12v～18v DC voltage that battery provides and the various waveforms (comprising sine wave, square wave, triangular wave etc.) of signal generator
Signal is integrated, output with 980khz～1023khz, the 20vpp～80vpp of signal generator same waveform about exchange
Signal, this AC signal be applied on piezoelectric ceramic transducer paster 101 so as to occur high frequency ultrasound vibrate, produce along
The detection Lamb wave that the minute surface of backsight eyeglass 3 is propagated.
Lower piezoelectric ceramic paster 201 is used for real-time supervision and detects Lamb wave wave amplitude for real-time detection raindrop, when pushing
The signal wave wave amplitude that electroceramics paster 201 is detected is equal to or less than did not had drop to be attached to lower piezoelectric when on backsight eyeglass originally
When ceramic paster 201 receives the 60% of the signal wave wave amplitude detecting (microgranule such as raindrop causes), receive feedback circuit and automatically trigger
Drive circuit, produce 980khz～1023khz, 100vpp～300vpp about AC signal to excite upper piezoelectric ceramics transducing
Device paster 101, so as to there is high frequency ultrasound vibration, produces along backsight eyeglass 3 specular transmission except sleet frost Lamb wave.
As shown in figure 3, when running into raindrop 7 grade microgranule in transmitting procedure except sleet frost Lamb wave, due to sound wave
Patten transformation, makes the internal generation acoustic streaming of raindrop 7, the compressional wave that sound wave produces in drop orders about raindrop 7 and is moved, and works as driving
When voltage is sufficiently large, raindrop 7 can be driven to depart from backsight eyeglass 3 minute surface: upper piezoelectric ceramic transducer paster 101 and lower piezoelectric pottery
As shown in Figure 3, Figure 4, the truly movement of raindrop 7 is as Fig. 5 institute for porcelain transducer paster 201 paste position and raindrop 7 stressing conditions
Show it can be seen that removing sleet frost Lamb wave to drive raindrop not position in the same time: 0 second position position of 8,0.5 second 9 and 1 second
Position 10 obvious difference, that is, have and significantly remove rain effect.
Embodiment 2
Upper piezoelectric ceramic transducer paster 101 and lower piezoelectric ceramic transducer paster 201 are bonded in backsight eyeglass 3 respectively
The both sides up and down in front (exposed face), driving circuit device is separately fixed inside back-mirror housing 6 simultaneously with receiving feedback circuit
It is connected with upper piezoelectric ceramic transducer paster 101 and lower piezoelectric ceramic transducer paster 201 respectively by electric wire.
Whole device passes through vehicle body storage battery power supply, and, after long-time parking, the cold snap in the north is very possible for automobile
Backsight eyeglass 3 surface solidification one lamination snow, solidifying ice or frosting can be led to, car owner in warming up, can with this device of start-up by hand, or
Pass through this device of connecting move control self-starting when person's warming up.Metal-Oxide Semiconductor field-effect transistor (mosfet) will
12v～18v voltage and the letter of the various waveforms (comprising sine wave, square wave, triangular wave etc.) of signal generator that accumulator provides
Number integrated, output and 980khz～1023khz, the 100vpp～300vpp of signal generator same waveform about exchange
Signal, to excite upper piezoelectric ceramic transducer paster 101 so as to generating heat and occurring high frequency ultrasound to vibrate, produces along backsight eyeglass
3 specular transmission except sleet frost Lamb wave.When the snow of rearview mirror surface and frost critical part, ice or frost melt as liquid
When, due to the patten transformation of sound wave, make liquid internal produce acoustic streaming, the compressional wave that sound wave produces in a liquid drives ice or frost to send out
Life is quickly moved, thus departing from automobile rearview mirror mirror mirror, can effectively achieve the purpose of deicing defrosting.
Embodiment 3
As shown in fig. 6, upper piezoelectric ceramic transducer paster 101 and lower piezoelectric ceramic transducer paster 201 are bonded respectively
In the upper and lower sides at backsight eyeglass 3 back side, drive circuit is separately fixed at back-mirror housing 6 inside and passes through with receiving feedback circuit
Electric wire is connected with upper piezoelectric ceramic transducer paster 101, lower piezoelectric ceramic transducer paster 201 respectively.
Whole device passes through vehicle body storage battery power supply, and Metal-Oxide Semiconductor field-effect transistor (mosfet) will store
12～18v DC voltage and the letter of the various waveforms (comprising sine wave, square wave, triangular wave etc.) of signal generator that battery provides
Number integrated, output and 980khz～1023khz, the 20vpp～80vpp of signal generator same waveform about exchange letter
Number, this AC signal is applied on piezoelectric ceramic transducer paster 102 so as to occur high frequency ultrasound to vibrate, and produces along anti-
Penetrate the detection Lamb wave of mirror surface delivery.Lower piezoelectric ceramic paster 202 is used for real-time supervision and detects Lamb wave wave amplitude for reality
When detect raindrop, the signal wave wave amplitude that piezoelectric ceramics paster 202 is detected instantly be equal to or less than originally do not had drop to be attached to
On backsight eyeglass at present piezoelectric ceramics paster 202 receive detect signal wave wave amplitude 60% when (microgranule such as raindrop causes), connect
Receive feedback circuit and automatically trigger drive circuit, produce 980khz～1023khz, 100vpp～300vpp about AC signal with
Excite piezoelectric ceramic transducer paster 102 so as to there is high frequency ultrasound vibration, produce along the transmission of backsight eyeglass 3 inner surface
Except sleet frost Lamb wave, due to the effect of Lamb wave guided wave, therefore can effectively produce on the outer surface of backsight eyeglass 3
Raw in the same direction except sleet frost Lamb wave.When running into raindrop 7 grade microgranule in transmitting procedure except sleet frost Lamb wave, due to
The patten transformation of sound wave, makes the internal generation acoustic streaming of raindrop 7, and the compressional wave that sound wave produces in drop orders about raindrop 7 and is moved,
Thus departing from automobile rearview mirror mirror mirror.Upper piezoelectric ceramic transducer paster 102, lower piezoelectric ceramic transducer paster 202
Paste position and raindrop 7 stressing conditions such as Fig. 6, shown in Fig. 7 and Fig. 8, can effectively achieve the purpose automatically removing rain.
Embodiment 4
Upper piezoelectric ceramic transducer paster 101 and lower piezoelectric ceramic transducer paster 201 are bonded in backsight eyeglass 3 respectively
The upper and lower sides at the minute surface back side, drive circuit and reception feedback circuit are separately fixed at back-mirror housing 6 inside and are divided by electric wire
It is not connected with upper piezoelectric ceramic transducer paster 101, lower piezoelectric ceramic transducer paster 201.
Whole device passes through vehicle body storage battery power supply, and, after long-time parking, the cold snap in the north is very possible for automobile
Backsight eyeglass 3 surface solidification one lamination snow, solidifying ice or frosting can be led to, car owner in warming up, can with this device of start-up by hand, or
Pass through this device of connecting move control self-starting when person's warming up.Metal-Oxide Semiconductor field-effect transistor (mosfet) will
12v～18v voltage and the letter of the various waveforms (comprising sine wave, square wave, triangular wave etc.) of signal generator that accumulator provides
Number integrated, output and 980khz～1023khz, the 100vpp～300vpp of signal generator same waveform about exchange
Signal, to excite upper piezoelectric ceramic transducer paster 102, makes piezoelectric ceramics that high frequency ultrasound vibration to occur, produces along reflecting mirror table
Face transmission except sleet frost Lamb wave.When the heat that upper piezoelectric ceramic ring energy device paster 102 is distributed makes backsight eyeglass 3
Surface is relative with frost critical part when melting as liquid, due to the patten transformation of sound wave, makes liquid internal produce acoustic streaming, sound wave exists
The compressional wave producing in liquid drives ice or frost to occur quickly to move, thus departing from automobile rearview mirror mirror mirror.Can have
Effect ground reaches the purpose of deicing defrosting.
In sum, this utility model be by piezoelectric ceramic transducer paster be directly bonded on backsight eyeglass 3 front or
The both sides up and down at the back side, using drive circuit obtain 980khz～1023khz, 20vpp～80vpp about AC signal apply
On upper piezoelectric ceramic transducer paster 101, lower piezoelectric ceramic transducer paster 201 is used for real-time detection raindrop, when there being raindrop
When trigger immediately 980khz～1023khz, 100vpp～300vpp about AC signal be applied on drive circuit, make pressure
There is high frequency ultrasound vibration in electroceramics transducer paster 101, produce along mirror surface transmission except sleet frost Lamb wave,
And promote drop using the Lamb wave producing, reach the target of cleaning minute surface；During the winter of cold, obtained using drive circuit
980khz～1023khz, 100vpp～300vpp about AC signal be applied on piezoelectric ceramic transducer paster 101,
So that piezoelectric ceramic transducer paster 101 is generated heat and occur high frequency ultrasound to vibrate, produce along mirror surface transmission except rain
Snow ice frost Lamb wave, when the heat that upper piezoelectric ceramic transducer paster 101 is distributed makes rearview mirror surface and frost critical part
When relatively melting as liquid, the compressional wave that sound wave produces in a liquid drives ice or frost to occur quickly to move, thus utilize producing
Lamb wave promote frost depart from minute surface, reach deicing defrosting purpose.
Claims (6)
1. a kind of automobile rearview mirror based on Lamb wave removes sleet frost device automatically, and described automobile rearview mirror includes housing (6)
With backsight eyeglass (3) it is characterised in that:
It is organized in pairs at least one pair of in the upper and lower both sides on the same surface of backsight eyeglass (3) as the upper piezoelectricity of Lamb wave transmitting terminal
Ceramic transducer paster (101) and lower piezoelectric ceramic transducer paster (201) as Lamb wave receiving terminal；
Drive circuit and reception that in cavity between described backsight eyeglass (3) and housing (6), configuration is powered by automobile storage battery
Feedback circuit, drive circuit and upper piezoelectric ceramic transducer paster (101) electrical connection, receive feedback circuit electrical connection lower piezoelectric pottery
Porcelain transducer paster (201) and drive circuit；
Described device includes two kinds automatically except rain working condition and two kinds of working conditions of automatic snow frost:
When automatically removing rain working condition, upper piezoelectric ceramic transducer paster (101) is on the upside of the minute surface of backsight eyeglass (3) along minute surface
Launch the detection Lamb wave from top to bottom propagated, described detection Lamb wave be by drive circuit tranmitting frequency be 980khz～
1023khz, driving voltage is that the AC signal of 20vpp～80vpp is applied on piezoelectric ceramic transducer paster (101), makes
Upper piezoelectric ceramic transducer paster (101) high frequency ultrasound is vibrated and is produced,
When receive feedback circuit receive travel to lower piezoelectric ceramic transducer paster (201) signal wave wave amplitude be equal to or
When being less than set wave amplitude 60%, receive feedback circuit transmission and feed back signal to drive circuit, the exchange of drive circuit transmitting
Signal frequency range keeps constant, and driving voltage is increased to 100vpp～300vpp, so that piezoelectric ceramic transducer paster high frequency is surpassed
Sonic vibration, produce along backsight eyeglass (3) minute surface from top to bottom propagate except sleet frost Lamb wave,
Except sleet frost Lamb wave makes to produce acoustic streaming inside the raindrop being attached on backsight eyeglass (3) minute surface, sound wave is in raindrop
The compressional wave producing orders about raindrop relative to occurring backsight eyeglass (3) minute surface to move, thus promoting raindrop to depart from backsight eyeglass (3) mirror
Face；
During automatic snow frost working condition, upper piezoelectric ceramic transducer paster (101) is along the minute surface transmitting of backsight eyeglass (3)
From top to bottom propagate except sleet frost Lamb wave, be to be 980khz by drive circuit tranmitting frequency except sleet frost Lamb wave
～1023khz, driving voltage is that the AC signal of 100vpp～300vpp is applied to piezoelectric ceramic transducer paster (101)
On, so that piezoelectric ceramic transducer paster (101) high frequency ultrasound is vibrated and produce,
Upper piezoelectric ceramic transducer paster (101) heating, makes the minute surface of backsight eyeglass (3) and the critical of accumulated snow, solidifying ice or frosting
Snow on face, ice or frost melt as aqueous water, and meanwhile, except sleet frost Lamb wave makes to produce acoustic streaming inside aqueous water, sound wave exists
The compressional wave producing in aqueous water drives the snow floating on aqueous water, ice or frost to be moved, thus promoting snow, ice or frost to depart from
The minute surface of backsight eyeglass (3).
2. the automobile rearview mirror based on Lamb wave according to claim 1 automatically remove sleet frost device it is characterised in that:
Described feedback signal be tranmitting frequency be 980khz～1023khz, output voltage for 100vpp～300vpp AC signal.
3. the automobile rearview mirror based on Lamb wave according to claim 1 automatically remove sleet frost device it is characterised in that:
Described drive circuit includes manostat, signal generator, Metal-Oxide Semiconductor field-effect transistor mosfet, transformator
With wave amplitude controller；
Accumulator, manostat, Metal-Oxide Semiconductor field-effect transistor mosfet, transformator, wave amplitude control module and upper
Piezoelectric ceramic transducer paster (101) sequentially electrically connects, and signal generator electrically connects Metal-Oxide Semiconductor field effect transistor
Pipe mosfet；
Described reception feedback circuit includes amplifying circuit, filter circuit, automatically controls gain circuitry, sampling hold circuit and voltage
Comparison circuit；
Lower piezoelectric ceramic transducer paster (201) passes through amplifying circuit, filter circuit, automatically controls gain circuitry, and sampling keeps
Circuit and voltage comparator circuit are electrically connected between the described drive circuit of access and accumulator after sequentially electrically connecting.
4. the automobile rearview mirror based on Lamb wave according to claim 3 automatically remove sleet frost device it is characterised in that:
The output waveform of described signal generator is sine wave, cosine wave, square wave or triangular wave.
5. the automobile rearview mirror based on Lamb wave according to claim 3 automatically remove sleet frost device it is characterised in that:
The input voltage of described Metal-Oxide Semiconductor field-effect transistor is the automobile storage battery DC voltage of 12～18v, input
Waveform is the output waveform of signal generator；Metal-Oxide Semiconductor field-effect transistor output waveform and input waveform phase
With maximum output voltage is 12～18v alternating voltage.
6. the automobile rearview mirror based on Lamb wave according to claim 1 automatically remove sleet frost device it is characterised in that:
Described upper piezoelectric ceramic transducer paster (101) and lower piezoelectric ceramic transducer paster (201) are right for three, and single patch shape is big
Little is the cuboid paster of 25mm × 1mm × 1mm for length x width x thickness, and paster is laterally covered on automotive rear-view eyeglass
(3) on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620825458.5U CN205916086U (en) | 2016-08-02 | 2016-08-02 | Automatic sleet moral integrity device that removes of automobile rearview mirror based on lamb wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620825458.5U CN205916086U (en) | 2016-08-02 | 2016-08-02 | Automatic sleet moral integrity device that removes of automobile rearview mirror based on lamb wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205916086U true CN205916086U (en) | 2017-02-01 |
Family
ID=57871398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620825458.5U Expired - Fee Related CN205916086U (en) | 2016-08-02 | 2016-08-02 | Automatic sleet moral integrity device that removes of automobile rearview mirror based on lamb wave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205916086U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106080526A (en) * | 2016-08-02 | 2016-11-09 | 上海工程技术大学 | A kind of automobile rearview mirror based on Lamb wave is automatically except sleet frost method and device |
| CN108717233A (en) * | 2017-01-25 | 2018-10-30 | 通用汽车环球科技运作有限责任公司 | Automatically cleaning lens system |
-
2016
- 2016-08-02 CN CN201620825458.5U patent/CN205916086U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106080526A (en) * | 2016-08-02 | 2016-11-09 | 上海工程技术大学 | A kind of automobile rearview mirror based on Lamb wave is automatically except sleet frost method and device |
| CN106080526B (en) * | 2016-08-02 | 2018-10-16 | 上海工程技术大学 | A kind of automobile rearview mirror based on Lamb wave removes sleet frost method and device automatically |
| CN108717233A (en) * | 2017-01-25 | 2018-10-30 | 通用汽车环球科技运作有限责任公司 | Automatically cleaning lens system |
| CN108717233B (en) * | 2017-01-25 | 2021-01-19 | 通用汽车环球科技运作有限责任公司 | Self-cleaning lens system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203698218U (en) | Sheet material surface rainfall removing equipment | |
| CN205916086U (en) | Automatic sleet moral integrity device that removes of automobile rearview mirror based on lamb wave | |
| CN105408033A (en) | An apparatus and method for clearing water from a window | |
| CN209176642U (en) | A kind of windscreen supersonic dust removal device | |
| CN206759385U (en) | A kind of photovoltaic module automatic snow-melting defroster | |
| CN106080526B (en) | A kind of automobile rearview mirror based on Lamb wave removes sleet frost method and device automatically | |
| CN107264475A (en) | A kind of frontal windshield rain removal system of automatic sensing rainfall | |
| CN114630717A (en) | Electroacoustic device | |
| JP2003301424A (en) | Antifog apparatus for curve mirror, curve mirror attached with the same, and antifog method of the curve mirror | |
| CN204077610U (en) | Video monitoring front-end rain brush autonomous cruise speed system | |
| CN201169253Y (en) | Apparatus for rapidly removing ice and snow on automobile front wind screen glass | |
| CN204540529U (en) | A kind of automobile bird-repeller system | |
| CN2628339Y (en) | Motor vehicle rear viewing mirror with removing rainwater unit | |
| CN102862514A (en) | Car mirror capable of being automatically cleaned | |
| CN111186416A (en) | Windshield ultrasonic dust removal device | |
| CN2805665Y (en) | Vehicular ice-melting water wiper | |
| WO2013142188A1 (en) | Automotive component ice-reduction system | |
| CN206446575U (en) | A kind of automobile rearview mirror dewatering surface system based on ultrasonic cavitation effect | |
| CN201176152Y (en) | Double-face windshield wiper for automobile | |
| CN210116477U (en) | Outer defogging auxiliary system of windshield and vehicle | |
| GB2387107A (en) | Ultrasonic clearing of water droplets from crash-helmet visors | |
| CN201703351U (en) | Vehicle air-window cleaning device capable of spraying hot water | |
| CN213799564U (en) | Windscreen wiper heating system | |
| JPH0723323Y2 (en) | Water drop removal device | |
| CN209022886U (en) | A kind of multi-functional timing wiper controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170201 |