CN205440286U - Intelligent control device of windshield wiper - Google Patents
Intelligent control device of windshield wiper Download PDFInfo
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- CN205440286U CN205440286U CN201521128806.5U CN201521128806U CN205440286U CN 205440286 U CN205440286 U CN 205440286U CN 201521128806 U CN201521128806 U CN 201521128806U CN 205440286 U CN205440286 U CN 205440286U
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- windshield wiper
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Abstract
The application discloses intelligent control device of windshield wiper, it includes: microwave sensor, it is used for launching the reflection electromagnetic wave that high frequency electric magnetic wave and receive reflection returned outward to shield glass to the output doppler signal, the amplifier, its and microwave sensor electric connection for acquire the doppler signal of microwave sensor output and enlarge back output with it, and the treater, its and amplifier electric connection. Because the sensor is microwave sensor, microwave sensor is through launching the high frequency electric magnetic wave outward to shield glass, and the electromagnetic wave meets whereabouts rain drops back reflection and returns the reflection electromagnetic wave for microwave sensor can be through exporting the doppler signal after electromagnetic wave of launching and the reflection electromagnetic wave mixing of reflecting back. Thereby obtain rain drops size, rainfall density and rainwater whereabouts speed information through enlargeing and handling this doppler signal, synthesize the size that reachs the rainfall for the recognition accuracy of rainfall size is higher, can control opening of windshield wiper more intelligently and stop and speed.
Description
Technical field
The application relates to technical field of automatic control, is specifically related to a kind of Intelligent control device of windshield wiper.
Background technology
Rainy day is the weather occurred frequently of vehicle accident.Owing to rainy day ground is wet and slippery, the sight line of driver the most clear, so driver should than the non-rainy day time more cagily travel, the probability of happening of vehicle accident could be reduced.As can be seen here, the control of rain brush is particularly important with the safety that automobile was travelled in the rainy day by work efficiency.If using traditional manual windshield-wiper controller, then driver, when the rainy day drives vehicle, both it is noted that the change of road traffic condition, controls rain brush speed according to rainfall so that driver can not fix attention on driving again.Especially when rainfall is suddenly big or suddenly small, driver can be caused and divert one's attention significantly by operation windshield-wiper controller continually, therefore too increases the potential safety hazard of traffic.
The most existing intelligent wiper is the most all to use optical sensor to detect rainfall.It is emitting far-infrared by a Light-Emitting Diode, and infrared ray is received by an optical pickocff after front windshield reflects again.On front windshield, globule area is the biggest, and the infrared ray that optical pickocff receives is the fewest.But the detection rainfall of this scheme easily reaches maximum saturation, it is impossible to tell heavy rain and heavy rain, some inconvenience on using are thereby resulted in.
Summary of the invention
The application provides a kind of Intelligent control device of windshield wiper that can more precisely identify rainfall size.
A kind of embodiment provides a kind of Intelligent control device of windshield wiper, comprising:
Microwave remote sensor, it is for the reflection electromagnetic wave being reflected back to shield glass emission electromagnetic wave and reception, and according to the electromagnetic wave launched and the reflection electromagnetic wave being reflected back one Doppler signal of output；
Amplifier, it is electrically connected with microwave remote sensor, exports after being used for obtaining the Doppler signal of microwave remote sensor output and being amplified；
And processor, itself and amplifier electric connection, processor Doppler signal after the amplification obtaining amplifier output, and send an order code corresponding with rainfall rank to automobile middle control device according to the Doppler signal after amplifying.
Further, microwave remote sensor is fast and different raindrop size for different densities, different rain, exports different Doppler signals.
Further, in processor, it is provided with A/D converter and digital filter, the Doppler signal after the amplification that processor obtains, successively after A/D converter conversion and digital filter process, obtain rainfall high low signal.
Further, the multistage rainfall high low signal template of rainfall high low signal with pre-stored is contrasted by processor one by one, it is judged that rainfall high low signal is the highest with which grade rainfall high low signal template similarity, it is determined that the rank of current rainfall size.
Further, processor is also pre-stored with the mapping table that multistage rainfall size is corresponding with order code, and processor obtains the order code of correspondence according to the rainfall rank judged from mapping table, and order code is sent to automobile middle control device.
Further, microwave remote sensor is arranged in the support of shield glass rearview mirror, and the sensitive surface of microwave remote sensor is arranged towards vehicle front.
Further, microwave remote sensor, amplifier and processor are encapsulated in a container, and container is embedded in the support of shield glass rearview mirror.
Further, processor is single-chip microcomputer.
Intelligent control device of windshield wiper according to above-described embodiment, owing to sensor is microwave remote sensor, microwave remote sensor is by shield glass emission frequency electromagnetic waves, electromagnetic wave runs into whereabouts raindrop back reflection and returns reflection electromagnetic wave so that microwave remote sensor can export a Doppler signal with intermediate-freuqncy signal feature after being mixed by the electromagnetic wave launched and the reflection electromagnetic wave being reflected back.Process this Doppler signal by amplifier amplification and processor thus obtain raindrop size, rainfall density and rainwater falling speed information, the size of comprehensive descision rainfall, the accuracy of identification making rainfall size is higher, it is possible to control start and stop and the speed of rain brush more intelligently.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of Intelligent control device of windshield wiper in a kind of embodiment；
Fig. 2 is Intelligent control device of windshield wiper mounting means front view on automobile in a kind of embodiment；
Fig. 3 is Intelligent control device of windshield wiper mounting means side view on automobile in a kind of embodiment；
Fig. 4 is the principle flow chart of Intelligent control device of windshield wiper in a kind of embodiment.
Detailed description of the invention
Combine accompanying drawing below by detailed description of the invention the present invention is described in further detail.
Provide a kind of Intelligent control device of windshield wiper in the present embodiment, Intelligent control device of windshield wiper is arranged on automobile, realize the detection identification to vehicle front rainfall size, and transmission instructs accordingly to automobile middle control device, control rain brush and timely and effectively shield glass is carried out wiping, improve drive experience coefficient and the safety coefficient of driver.
As it is shown in figure 1, Intelligent control device of windshield wiper includes microwave remote sensor 1, amplifier 2 and processor 3.The outfan of sensor 1 is electrically connected with the receiving terminal of amplifier 2, the outfan of amplifier 2 is electrically connected with the receiving terminal of processor 3, the outfan of processor 3 is electrically connected with the receiving terminal of automobile middle control device 4, and automobile middle control device 4 is electrically connected with the driving means of rain brush.
As shown in Figures 2 and 3, microwave remote sensor 1, amplifier 2 and processor 3 are encapsulated in a container 5, container 5 is embedded in the support of shield glass rearview mirror, the sensitive surface that can launch and accept electromagnetic wave of microwave remote sensor 1 is arranged towards vehicle front so that microwave remote sensor 1 can be launched frequency electromagnetic waves and accept the reflection electromagnetic wave being reflected back to shield glass front.Intelligent control device of windshield wiper can be directly encapsulated in the groove on the support of shield glass rearview mirror in other embodiments.
Microwave remote sensor 1 for launching frequency electromagnetic waves to shield glass front, electromagnetic wave is running into the obstacle back reflections such as raindrop, microwave remote sensor 1 receives the reflection electromagnetic wave being reflected back toward, and the electromagnetic wave of transmitting is exported a Doppler signal with intermediate-freuqncy signal feature after the reflection electromagnetic wave mixing being reflected back, export from outfan.Fast and the different raindrop size for different densities, different rain, microwave remote sensor 1 exports different Doppler signals.
Amplifier 2 obtains Doppler signal by receiving terminal from the outfan of microwave remote sensor 1, and is amplified this Doppler signal processing.Concrete, amplifier 2 selects the signal of the most useful bandwidth to be amplified from Doppler signal, filters a part of clutter simultaneously.Doppler signal after the amplification finally will handled well exports to processor 3 from outfan.
Processor 3 is single-chip microcomputer, A/D converter 31, digital filter 32 and central processing unit 33 it is provided with in single-chip microcomputer, processor 3 obtains the Doppler signal after amplifying by receiving terminal from the outfan of amplifier 2, first pass through A/D converter and the Doppler signal of amplification is converted into digital signal, through digital filter 32, digital signal moderate rain being swiped the interference signals such as work again to filter out, final process obtains can be used for judging the rainfall high low signal of rainfall size.
In the memory module of processor 3, it is previously stored with multistage rainfall high low signal template, rainfall size is divided into multiple rank, and the corresponding different order code of rainfall of different stage.After central processing unit 33 obtains rainfall high low signal, rainfall high low signal can be contrasted one by one with multistage rainfall high low signal template, contrast the rainfall high low signal rainfall high low signal template similarity with certain grade the highest, i.e. judge that current rainfall size is this rank.
The mapping table that multistage rainfall size is corresponding with order code also it is pre-stored with at processor 3.The different control code that different rainfall sizes are corresponding, the two variable is associating by mapping table so that central processing unit 33 can be quickly found corresponding control code according to rainfall size.
Processor 3 finds out the order code of correspondence according to the rank of current rainfall from mapping table, and order code is sent to automobile middle control device 4, and automobile middle control device 4 controls the driving means of rain brush according to order code, thus controls start and stop and the speed of rain brush.
As shown in Figure 4, the principle steps of the Intelligent control device of windshield wiper that the present embodiment provides is as follows:
S101: launch electromagnetic wave；
Microwave remote sensor 1 launches frequency electromagnetic waves to shield glass front.
S102: obtain reflection electromagnetic wave and export Doppler signal；
Microwave remote sensor 1 obtains the reflection electromagnetic wave being reflected back toward, and after the reflection electromagnetic wave mixing being reflected back, the electromagnetic wave of transmitting is exported a Doppler signal with intermediate-freuqncy signal feature.
S103: amplify Doppler signal；
Doppler signal is filtered and amplifies by amplifier 2, removes part interference signal.
S104: process and obtain rainfall high low signal；
Doppler signal after amplification is successively by obtaining rainfall high low signal after A/D converter 31 conversion in processor 3 and digital filter 32 filtration treatment.
S105: judge rainfall rank；
Rainfall high low signal is contrasted one by one by central processing unit 33 with multistage rainfall high low signal template, contrasts rainfall high low signal and which grade rainfall high low signal template similarity the highest, it is judged that the rank of current rainfall size.
S106: send order code；
Central processing unit 33 finds out the order code corresponding with rainfall size according to mapping table, and order code is sent to automobile middle control device 4.
S107: control rain brush.
After automobile middle control device 4 obtains the order code that processor 3 sends, control the driving means of rain brush, control the action of rain brush.
The Intelligent control device of windshield wiper that the present embodiment provides have employed microwave remote sensor 1 due to sensor, microwave remote sensor 1 can launch frequency electromagnetic waves to shield glass front, electromagnetic wave is stopped back reflection by measured objects such as rainwater so that microwave remote sensor can export a Doppler signal with intermediate-freuqncy signal feature after being mixed by the electromagnetic wave launched and the reflection electromagnetic wave being reflected back.Process this Doppler signal by amplifier 2 amplification and processor 3 thus obtain raindrop size, rainfall density and rainwater falling speed information, by comprehensively judging the size of rainfall, it is possible to judge rainfall size accurately, be light rain, heavy rain or heavy rain.And optical pickocff of the prior art how short of rain can only judge rainfall size by covering of shield glass, and moderate rain just can make shield glass be covered with rainwater, therefore prior art judges not accurate enough.Different rainfall sizes then can be identified by this Intelligent control device of windshield wiper, thus control rain brush and make different actions, more effectively removes the rainwater on shield glass, improves the security performance driven.
The present invention is illustrated by use above specific case, is only intended to help and understands the present invention, not in order to limit the present invention.For those skilled in the art, according to the thought of the present invention, it is also possible to make some simple deductions, deform or replace.
Claims (8)
1. an Intelligent control device of windshield wiper, it is characterised in that including:
Microwave remote sensor, it is for the reflection electromagnetic wave being reflected back to shield glass emission electromagnetic wave and reception, and according to the electromagnetic wave launched and the reflection electrical measurement ripple being reflected back one Doppler signal of output；
Amplifier, it is electrically connected with described microwave remote sensor, exports after being used for obtaining the Doppler signal of microwave remote sensor output and being amplified；
And processor, itself and the electric connection of described amplifier, described processor Doppler signal after the amplification obtaining the output of described amplifier, and send an order code corresponding with rainfall rank to automobile middle control device according to the Doppler signal after described amplification.
2. Intelligent control device of windshield wiper as claimed in claim 1, it is characterised in that described microwave remote sensor is fast and different raindrop size for different densities, different rain, exports different Doppler signals.
3. Intelligent control device of windshield wiper as claimed in claim 2, it is characterized in that, A/D converter and digital filter it is provided with in described processor, the Doppler signal after the amplification that described processor obtains, successively after A/D converter conversion and numeral filters filter process, obtain rainfall high low signal.
4. Intelligent control device of windshield wiper as claimed in claim 3, it is characterized in that, the multistage rainfall high low signal template of rainfall high low signal with pre-stored is contrasted by described processor one by one, it is judged that rainfall high low signal is the highest with which grade rainfall high low signal template similarity, it is determined that the rank of current rainfall.
5. Intelligent control device of windshield wiper as claimed in claim 4, it is characterized in that, described processor is also pre-stored with the mapping table that multistage rainfall size is corresponding with order code, and described processor obtains the order code of correspondence according to the rainfall rank judged from mapping table, and order code is sent to automobile middle control device.
6. Intelligent control device of windshield wiper as claimed in claim 5, it is characterised in that described microwave remote sensor is arranged in the support of shield glass rearview mirror, and the sensitive surface of described microwave remote sensor is arranged towards vehicle front.
7. Intelligent control device of windshield wiper as claimed in claim 6, it is characterised in that described microwave remote sensor, amplifier and processor are encapsulated in a container, and container is embedded in the support of shield glass rearview mirror.
8. Intelligent control device of windshield wiper as claimed in claim 7, it is characterised in that described processor is single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521128806.5U CN205440286U (en) | 2015-12-30 | 2015-12-30 | Intelligent control device of windshield wiper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521128806.5U CN205440286U (en) | 2015-12-30 | 2015-12-30 | Intelligent control device of windshield wiper |
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| CN205440286U true CN205440286U (en) | 2016-08-10 |
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| CN201521128806.5U Active CN205440286U (en) | 2015-12-30 | 2015-12-30 | Intelligent control device of windshield wiper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105644509A (en) * | 2015-12-30 | 2016-06-08 | 深圳市西柯南电子科技有限公司 | Intelligent windshield wiper control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105644509A (en) * | 2015-12-30 | 2016-06-08 | 深圳市西柯南电子科技有限公司 | Intelligent windshield wiper control device |
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Effective date of registration: 20180528 Address after: 523808 room 8, B 201, international finance IT R & D center, 5, Songshan Lake hi tech Industrial Development Zone, Dongguan, Guangdong, China, 5 Patentee after: Dongguan City Bridge Electronic Technology Co., Ltd. Address before: 518103 Guangdong Shenzhen Baoan District Fuyong street new and Fuyuan Garden Road B Industrial Park B4 block second storey East Unit Patentee before: Shenzhen Xikenan Electronic Technology Co., Ltd. |