CN209167216U - It is a kind of for detecting the device of windshield water mist - Google Patents
It is a kind of for detecting the device of windshield water mist Download PDFInfo
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- CN209167216U CN209167216U CN201821239978.3U CN201821239978U CN209167216U CN 209167216 U CN209167216 U CN 209167216U CN 201821239978 U CN201821239978 U CN 201821239978U CN 209167216 U CN209167216 U CN 209167216U
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- water mist
- transmitting unit
- receiving unit
- glass body
- windshield
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Abstract
The utility model discloses a kind of for detecting the device of windshield water mist, including glass body, controller and ultrasonic transmission/reception component, the ultrasonic transmission/reception component includes receiving unit and transmitting unit, the transmitting unit is arranged on two sides of arbitrary neighborhood of glass body inner surface, the receiving unit is correspondingly arranged on two in addition adjacent sides, and the controller is connect with receiving unit and transmitting unit respectively；The receiving unit and transmitting unit, which cooperate, forms ultrasonic surface detection zone in glass body inner surface.The utility model can not only accurately detect the water mist on windshield inner surface, additionally it is possible to specific location of the water mist region on windshield inner surface be identified, in order to achieve the purpose that accurate demisting.
Description
Technical field
The utility model relates to Automobile Products technical fields, relate in particular to a kind of for detecting windshield water mist
Device, the detection device are specifically used for the water mist of detection windshield inner surface.
Background technique
Condensation water mist, or humidity, temperature when car inside are tended under arctic weather, on windshield
When degree and larger external environment difference, condensation water mist is also easy on windshield.When condensation has water mist on windshield,
It will seriously affect the sight of driver, easily lead to that safety accident occurs, it is therefore desirable at the water mist on windshield
Reason.
Currently, and removal determining to the observation of water mist on windshield is usually all rule of thumb controlled by driver, that is, work as
When water mist regional diffusion on windshield is to certain procedures, driver removes water mist by wiping or opening air-conditioning manually.But
This mode needs to be manually operated, and has dispersed the attention of driver and the control force to steering wheel, has been easy to cause safety accident.
Also, in the actual operation process there is also manual operation cannot timely demisting the problem of.
In order to solve the above-mentioned technical problem, following technology is proposed in the prior art:
Chinese patent notification number disclosed for the prior art of " CN106427901A " on 2 22nd, 2017 a kind of vehicle-mounted
Formula ultrasonic wave demisting defroster, including the ultrasound transducer array being installed on console face, the ultrasonic transducer
Array includes at least one set of transversely arranged controller mould group, and the controller mould group passes through harness and multimedia display screen mould
Block, automatic monitoring sensor connection.Mist, the white automatic monitoring method being related on a kind of glass simultaneously.The patent is passed by light
Water mist on sensor and range sensor cooperation detection windshield, and ultrasonic wave demisting is automatically turned on when reaching setting state
Defroster carries out demisting defrosting.Since the patent realizes automatic detection and the automatic defrosting of water mist, it not will disperse and drive
The attention for the person of sailing is conducive to improve safety.But in actual use, since range sensor is mounted in the glass that keeps out the wind
One separate modular at glass rear, the disadvantage is that separate modular installation influences sight and safety, and dead angle easy to form, it can not
Windshield fogging position is positioned.And light sensor uses visible light or non-visible light, under solar radiation, simultaneously
There are the electromagnetic wave of various frequency spectrums, more than visible light, thus it is equally possible interfered strongly, so as to cause detection failure.
And since most of windshield are all curve forms, different location curvature is different, dead angle easy to form.Light sensor is also deposited
It is big and the disadvantages of installation and debugging are inconvenient in volume.
In addition, there are also the technical solutions of other automatic detection demistings in the prior art, mainly include the following two kinds:
The first is Temperature and Humidity method, belongs to indirect detection method.Its testing principle is to detect vapour simultaneously by sensor
The temperature and humidity in interior portion judges whether to reach fogging point, when being close to or up to fogging point, starts demister, continues
Temperature and humidity is detected, when the conditions are not met, stops demister.Or constant time lag stops for a period of time after starting.It should
Method realizes automatic detection and defrosting function to a certain extent, but there is also following disadvantages: temperature and humidity detector can only
The fogging condition of installation site subrange is represented, whether fogging is unable to judge accurately for normal driver observation area；It is interior empty
Gas difference air mobility status (switch of such as vehicle window and openings of sizes difference), temperature and humidity detection can bring deviation；Temperature
Be delayed there are longer response etc. with moisture detection sensor, these disadvantages eventually lead to demister generate it is following abnormal
Reaction: akinesia when such as needing to act, or movement cause driving dangerousness not in time, do not need generation when movement and act, interference
It drives, and waste of energy etc..On the whole, which can not accurately detect the degree of fogging and the position of fogging
It sets, can not directly know the true fogging situation of windshield.
Second is capacitance detection method, also belongs to direct Detection Method, and testing principle is by pacifying in glass surface
Dress or arrangement conducting wire, form capacitor, when glass surface fogging, the dielectric properties between conducting wire change, to lead
It sends a telegraph appearance to change, then capacitance variation is identified by connected detection circuit, to judge whether fogging.Electricity
Appearance formula detection method is to have directly detected fogging than the advantages of Temperature and Humidity scheme, just carries out demisting movement.But it is still deposited
In following defect: 1, it is not easy to the fogging situation of detection key area, even if using transparent conductive material (similar capacitance touch
Screen), the transparency that equally will cause key area is obvious；And it is further desired that glass cover-plate protects conducting wire, technique is difficult to reality
It applies.2, if only arranging conducting wire to part, it can not accurately determine the fogging situation of overall wind shielding glass；Conducting wire material
Material may will affect heat transfer situation, the unsafe conditions of windshield fogging and the non-fogging in capacitive sensing region, phase occur
The case where capacitive sensing region fogging may also instead occur and windshield non-fogging, the energy at this moment can be consumed in vain.
Utility model content
Utility model aims to solve the above-mentioned problems in the prior art, provide one kind and keep out the wind for detecting
The device of glass water mist, the utility model can not only accurately detect the water mist on windshield inner surface, additionally it is possible to identify
It is discharged specific location of the fog-zone domain on windshield inner surface, in order to achieve the purpose that accurate demisting.
To achieve the above object, the technical solution adopted in the utility model is as follows:
It is a kind of for detecting the device of windshield water mist, it is characterised in that: including glass body, controller and ultrasonic wave
Transmitting-receiving subassembly, the ultrasonic transmission/reception component include receiving unit and transmitting unit, and the transmitting unit is arranged in glass body
On two sides of arbitrary neighborhood of inner surface, the receiving unit is correspondingly arranged on two in addition adjacent sides, the controller
It is connect respectively with receiving unit and transmitting unit；The receiving unit and transmitting unit, which cooperate, forms table in glass body inner surface
Face ultrasound examination region.
The quantity of transmitting unit is at least a set of in each edge on the glass body inner surface, correspondingly, the glass
The quantity of receiving unit is also at least a set of on side parallel with transmitting unit in body internal surface.
The transmitting unit includes transmitting transducer and oblique reflection striped, and the receiving unit is including reception energy converter and tiltedly
Reflection strip.
The energy converter is wedge type transducer or grating transducer.
The ultrasonic transmission/reception component is bonded on the edge of glass body inner surface by connection sheet.
Using utility model has the advantages that
1, using the water mist of ultrasonic surface detection windshield inner surface, ultrasonic surface generates decays the utility model
(acoustic attenuation) includes attenuation by absorption and scatter attenuation, wherein attenuation by absorption is the viscosity due to medium, heat transfer and various relaxations
Caused by the phenomenon of Henan；Scatter attenuation is generation when encountering the interface that other mediums are formed in communication process due to ultrasonic surface
The reflection to different directions, decay so as to cause energy dropoff.And water mist has very high viscosity, it will be to ultrasonic surface
Very strong attenuation by absorption is generated, even seldom water mist can also generate obvious effect.In addition, droplet edge in water mist
Acoustic impedance discontinuity, scatter attenuation is equally existed, so that weaken by the ultrasonic surface of water mist, eventually by receiving
Signal contrast, so that it may recognize such variation.Therefore, when by ultrasonic surface be applied to detection windshield inner surface
Water mist when, sensitive reaction (i.e. attenuation by absorption and scatter attenuation) can be made to water mist.Specifically, when water mist moisture condensation arrives
When glass surface, the surface acoustic waves signal of corresponding position can decline, and receiving end can detecte this decline variation, thus really
Determine touch position coordinates.Compared with existing detection technique, the utility model is cooperated using receiving unit and transmitting unit in glass
The detection mode that glass body internal surface forms ultrasonic surface detection zone can not only accurately detect the water on windshield
Mist, additionally it is possible to the specific location of water mist region on the windshield is identified, to achieve the purpose that accurate demisting.
2, ultrasonic transmission/reception component includes receiving unit and transmitting unit in the utility model, and transmitting unit is arranged in glass
On two sides of arbitrary neighborhood of body internal surface, receiving unit is correspondingly arranged on two in addition adjacent sides, the controller
It is connect respectively with receiving unit and transmitting unit；Receiving unit and transmitting unit cooperate super on glass body inner surface formation surface
Sonic detection region.The advantages of structure is the time difference that space parallax can be mapped as electric signal by reflection strip, that is, forms one
A electric signal that can identify position, does not need excessive transceiver module, reduces cost.
3, the transmitting unit in the utility model includes transmitting transducer and oblique reflection striped, and receiving unit includes receiving to change
It can device and oblique reflection striped.It is that technology is highly developed using the advantages of structure, has convenient for manufacture, that cost is relatively low etc. is excellent
Point.
4, ultrasonic transmission/reception component can be both directly anchored on the edge of glass body inner surface in the utility model, can also
It is bonded in by connection sheet on the edge of glass body inner surface.Wherein, directly fixed mode has mounting means more steady
Gu, the advantages that appearance is more beautiful.And the advantages of in such a way that connection sheet is fixed be not need to windshield full wafer into
Row processing, it is only necessary to be bonded module in the automobile stage, the module is due to compact volume and convenience, after being equally applicable to automobile
Fill market.
5, the utility model uses ultrasonic surface technology (will not pass through air borne), and energy converter is mounted on windshield
Edge on, in existing vehicle structure also be easy hide, do not influence appearance and safety；According to the different installation sides of energy converter
Formula, can easily realize the fogging position positioning of different accuracy, and not have dead angle；Ultrasonic surface belongs to mechanical oscillating wave,
The electromagnetic wave of various frequencies does not have interference effect；Ultrasonic surface not only can be along plane efficient propagation, can also be along song
Face efficient propagation, will not because of windshield shape it is different and change.
6, existing surface acoustic wave touch technology is applied to the water mist of windshield body internal surface by the utility model
In detection technique, it had not only been equivalent to the new application invention of known product, but also has overcome technology prejudice, simultaneously because it has accurately
Testing result, thus have novelty.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment 1；
Fig. 2 is the structural schematic diagram of embodiment 2；
Fig. 3 is the structural schematic diagram of embodiment 3；
Fig. 4 is the structural schematic diagram of embodiment 4；
Figure label are as follows: 1, glass body inner surface, 2, transmitting transducer, 3, reception energy converter, 4, oblique reflection striped, 5,
Connection sheet.
Specific embodiment
Embodiment 1
It is a kind of for detecting the device of windshield water mist, including glass body, controller and ultrasonic transmission/reception component, institute
Stating ultrasonic transmission/reception component includes receiving unit and transmitting unit, and appointing for glass body inner surface 1 is arranged in the transmitting unit
In adjacent two edges of anticipating, the receiving unit is correspondingly arranged in addition adjacent two sides, the controller respectively with reception
Unit is connected with transmitting unit；The receiving unit and transmitting unit, which cooperate, forms ultrasonic surface in glass body inner surface 1
Detection zone.
In the present embodiment, the transmitting unit includes transmitting transducer 2 and oblique reflection striped 4, and the receiving unit includes
Receive energy converter 3 and oblique reflection striped 4.Wherein, transmitting unit is set up directly on arbitrary neighborhood two of glass body inner surface 1
Bian Shang, the quantity of transmitting unit is a set of in each edge；Receiving unit is set up directly in corresponding other adjacent two edges, often
The quantity of receiving unit is a set of on side.When detection, receiving unit and transmitting unit cooperate in the formation of glass body inner surface 1
Ultrasonic surface detection zone,
In actual use, the controller is preferably mounted on the console of automobile or in console the present embodiment, institute
Stating energy converter is wedge type transducer or grating transducer.
The implementation principle of the present embodiment are as follows:
First by controller control transmitting transducer 2 in 1 emitting surface ultrasonic wave of glass body inner surface, ultrasonic surface warp
The staggered ultrasonic surface detection zone of vertical and horizontal is formed in glass body inner surface 1 after the reflection of oblique reflection striped 4, through oblique
Ultrasonic surface after the reflection of reflection strip 4 reaches the oblique reflection striped 4 of corresponding sides, then the oblique reflection striped 4 through the corresponding sides
It is received after reflection by reception energy converter 3 and feeds back to controller.When glass body inner surface 1 has water mist, by water mist
Ultrasonic surface be absorbed decaying, controller determines water mist on glass body inner surface 1 according to the deamplification received
Specific location, and according to the degree of strength of deamplification determine water mist amount whether reach influence sight standard, therefore, it is determined that
Whether need to open demister and carries out demisting.Further, controller can also determine water according to the degree of strength of deamplification
Whether mist amount reaches the standard for influencing sight, if not up to influencing the standard of sight, does not need to open demister.
Embodiment 2
It is a kind of for detecting the device of windshield water mist, including glass body, controller and ultrasonic transmission/reception component, institute
Stating ultrasonic transmission/reception component includes receiving unit and transmitting unit, and appointing for glass body inner surface 1 is arranged in the transmitting unit
In adjacent two edges of anticipating, the receiving unit is correspondingly arranged in addition adjacent two sides, the controller respectively with reception
Unit is connected with transmitting unit；The receiving unit and transmitting unit, which cooperate, forms ultrasonic surface in glass body inner surface 1
Detection zone.
In the present embodiment, the transmitting unit includes transmitting transducer 2 and oblique reflection striped 4, and the receiving unit includes
Receive energy converter 3 and oblique reflection striped 4.Wherein, transmitting unit is set up directly on arbitrary neighborhood two of glass body inner surface 1
Bian Shang, the quantity of transmitting unit is two sets in each edge, and the transmitting transducer 2 in two sets of transmitting units is arranged at this side
Both ends；Receiving unit is set up directly in corresponding other adjacent two edges, and the quantity of receiving unit is two sets in each edge,
And the reception energy converter 3 in two sets of receiving units is arranged at the both ends on this side.When detection, receiving unit is matched with transmitting unit
It closes and forms ultrasonic surface detection zone in glass body inner surface 1.
Embodiment 3
It is a kind of for detecting the device of windshield water mist, including glass body, controller and ultrasonic transmission/reception component, institute
Stating ultrasonic transmission/reception component includes receiving unit and transmitting unit, and appointing for glass body inner surface 1 is arranged in the transmitting unit
In adjacent two edges of anticipating, the receiving unit is correspondingly arranged in addition adjacent two sides, the controller respectively with reception
Unit is connected with transmitting unit；The receiving unit and transmitting unit, which cooperate, forms ultrasonic surface in glass body inner surface 1
Detection zone.
In the present embodiment, the transmitting unit includes transmitting transducer 2 and oblique reflection striped 4, and the receiving unit includes
Receive energy converter 3 and oblique reflection striped 4.Wherein, transmitting unit is set up directly on arbitrary neighborhood two of glass body inner surface 1
Bian Shang, the quantity of transmitting unit is at least three sets in each edge, and the transmitting unit in each edge is end to end in a word；It receives
Unit is set up directly in corresponding other adjacent two edges, and the quantity of receiving unit is at least three sets, and every in each edge
Receiving unit on side is end to end in a word.When detection, receiving unit and transmitting unit cooperate in 1 shape of glass body inner surface
At ultrasonic surface detection zone.
Embodiment 4
The present embodiment is essentially identical with embodiment 1-3, and the main distinction is: the ultrasonic transmission/reception component passes through connection
Piece 5 is bonded on the edge of glass body inner surface 1, and 5 material of connection sheet can be metal, plastics, ceramics, glass etc., thickness
Degree is that 0.2-6MM is optional, and ultrasonic transmission/reception component is fixed in connection sheet 5, then cements in table in glass body by connection sheet 5
On face 1.Specifically, the quantity of connection sheet 5 is 4, wherein for setting in two panels connection sheet 5 by taking Fig. 1 in embodiment 1 as an example
Transmitting unit is set, in addition for receiving unit to be arranged in two panels connection sheet 5.First transmitting unit and receiving unit are distinguished when installation
Setting directly cements on the edge of 1 surrounding of glass body inner surface in 4 connection sheets 5, then by 4 connection sheets 5, side
The phase is installed additional after an action of the bowels.Be related in the remaining embodiments structure that the ultrasonic transmission/reception component of different structure is installed using connection sheet 5 with
The embodiment is identical, and this is no longer going to repeat them.
Claims (5)
1. a kind of for detecting the device of windshield water mist, it is characterised in that: received including glass body, controller and ultrasonic wave
Component is sent out, the ultrasonic transmission/reception component includes receiving unit and transmitting unit, and the transmitting unit is arranged in glass body
On two sides of arbitrary neighborhood on surface (1), the receiving unit is correspondingly arranged on two in addition adjacent sides, the controller
It is connect respectively with receiving unit and transmitting unit；The receiving unit and transmitting unit cooperate in glass body inner surface (1) shape
At ultrasonic surface detection zone.
2. as described in claim 1 a kind of for detecting the device of windshield water mist, it is characterised in that: the glass body
The quantity of transmitting unit is at least a set of in each edge on inner surface (1), correspondingly, on the glass body inner surface (1) with
The quantity of receiving unit is also at least a set of on the parallel side of transmitting unit.
3. as claimed in claim 1 or 2 a kind of for detecting the device of windshield water mist, it is characterised in that: the transmitting
Unit includes transmitting transducer (2) and oblique reflection striped (4), and the receiving unit includes receiving energy converter (3) and oblique reflection item
Line (4).
4. as claimed in claim 3 a kind of for detecting the device of windshield water mist, it is characterised in that: the transmitting transducing
Device (2) is wedge type transducer or grating transducer, and the reception energy converter (3) is wedge type transducer or grating transducer.
5. a kind of for detecting the device of windshield water mist as described in any one of claim 1,2 or 4, feature exists
In: the ultrasonic transmission/reception component is bonded on the edge of glass body inner surface (1) by connection sheet (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821239978.3U CN209167216U (en) | 2018-08-02 | 2018-08-02 | It is a kind of for detecting the device of windshield water mist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821239978.3U CN209167216U (en) | 2018-08-02 | 2018-08-02 | It is a kind of for detecting the device of windshield water mist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209167216U true CN209167216U (en) | 2019-07-26 |
Family
ID=67329211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821239978.3U Active CN209167216U (en) | 2018-08-02 | 2018-08-02 | It is a kind of for detecting the device of windshield water mist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209167216U (en) |
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2018
- 2018-08-02 CN CN201821239978.3U patent/CN209167216U/en active Active
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