用超聲波傳感器組裝成車輛換向雷達(dá)[中文1400字] 【中英文WORD】
用超聲波傳感器組裝成車輛換向雷達(dá)[中文1400字] 【中英文WORD】,中文1400字,中英文WORD,用超聲波傳感器組裝成車輛換向雷達(dá)[中文1400字],【中英文WORD】,超聲波傳感器,組裝,車輛,換向,雷達(dá),中文,1400,中英文,WORD
[中文1400字].
ULTRASONIC SENSOR ASSEMBLY FOR A VEHICLE REVERSING RADAR
(原文2)A distance measurement and monitoring equipment, equipment automotive mobile anti-radar consists of: a camera is a wide-angle lens installed in the rear of the car the pictures possible obstacles behind the car body; calculate the horizontal distance of the distance measuring inductance two lateral corner of the body an obstacle; and a power supply power photoelectric coupler camera distance measuring inductance, and display. The obstacle is a mirror image processing, and then forwarded to the image of an image synthesizer, transferred to a video processor and a display as shown. A reverse gear signal is a valid signal to trigger the power.
The design usually involves car reverse radar, especially II distance measurement and monitoring device equipped car anti-radar, which is available to ultrasonic measurement method for measuring the distance between the car body and an obstacle and show that they have displayed, convenient security commutation.
The internal structure of the ultrasonic generator the two piezoelectric chip and a resonance board. When its poles plus pulse signal, whose frequency is equal to the natural oscillation frequency of the piezoelectric wafer and the piezoelectric wafer will occur resonance, and driven by the vibration of the resonance plate, they generate ultrasound. Conversely, if no voltage is applied between the two electrodes, when the resonant plate receives the ultrasonic, will stress the piezoelectric wafer as a vibration of the mechanical energy is converted to an electric signal, it becomes an ultrasonic receiver.
Ultrasonic detecting circuit, the transmission side to obtain the output pulse as a series of square-wave, its width for transmitting ultrasound and receiving ultrasonic time interval, the greater the distance of the measured object, the larger the pulse width, the output pulse number of the measured distance into proportional.
Relatively driving through the back of the mirror, the driver is still inevitable at certain angles to deceive death may occasion ally incurred pimple or abrasions. Therefore, the car in reverse for on-street parking is considered to be neither too big nor less - a veteran of the small challenges at peak times, and it is especially a big trouble to improvements, revealed three monitors mounted on the side of the car and the rear side, respectively, in order to eliminate any possible dead when the monitor by selecting a different picture reversed. However, the reference to distract drivers busy monitoring before and after the switch, and to help the deterioration of the situation in the real world, but under the general views.
The main object of the design is to provide a distance measuring and monitoring device equipped automobile mobile joint anti-radar video synthesis technology awareness and distance measuring inductance, eliminating any dead ends when browsing through the mirror behind the car body behind a driver to see clearly, and the other see digitized distance display on the one hand to ensure a safe commutation.
Another object of the design is to provide a distance measurement and monitoring equipment, equipment automotive mobile anti-radar, you can display the temperature and no driver through the barrier. In order to achieve the control object, from the design of the monitoring device equipped automobile reverse radar contains: optocoupler camera with a wide-angle lens camera can be installed in the rear of the car to see the obstacles behind the car body.
The human ear can hear sound frequencies of 20Hz ~ 20kHz, audible sound waves in this frequency range, beyond the frequency range of sound, called the low-frequency sound called ultrasonic sound above 20kHz frequency usually speak range 100Hz ~ 8kHz.
?? ?Ultrasonic mode of transmission is the straight line, the higher the frequency, the diffraction capability weaker, but more reflective ability, ultrasonic sensors made ??of this nature is the use of ultrasonic waves. In addition, the speed of propagation of ultrasound in the air is relatively slow, is about the 1107-ft (332-m) / s, this ultrasound characteristics, we can easily produce an ultrasonic reversing radar.
?? ?Ultrasonic sensors have a transmitting probe and the receiving probe, but an ultrasonic sensor may have the dual role of the transmitting and receiving acoustic wave element is reversible. Ultrasonic sensors sold on the general market dedicated and dual-purpose, dedicated is the transmitter used to send ultrasonic receiver for receiving ultrasonic; dual-purpose transmitter and receiver as one of the sensors can send ultrasonic, but also receives ultrasonic. The resonance frequency (center frequency) of the ultrasonic sensor, 23kHz, 40kHz, 75kHz, 200kHz, 400kHz. Resonant frequency becomes high, the detection distance becomes short, decomposition of force also becomes high, and this design, we use a frequency of 40 kHz.
With the rapid development of science and technology, ultrasonic in reverse radar field application is more and more widely. But due to the limitation of technology and cost, the application of ultrasonic measuring distance is still very limited, therefore, in the ultrasonic distance measurement field is full of business opportunities and vitality, the future in the reverse radar application will be more and more widely. In the car of the future design, ultrasonic distance measurement instrument as a new technology in various aspects will have the very big development space, the future it will be towards high positioning, high precision, low power consumption, high stability of the development direction, in order to meet the growing demand of the society. Ultrasonic development trend for basic:
作者：Shili-Hsiung Li ；Hangchow ；
國(guó)籍：USA
出處：United States Patent
用超聲波傳感器組裝成車輛換向雷達(dá)
(譯文2)一個(gè)距離測(cè)量和監(jiān)控設(shè)備裝備汽車移動(dòng)反雷達(dá)的組成包括:一個(gè)照相機(jī)一個(gè)廣角鏡頭安裝在一輛汽車的后部拍照可能的障礙背后的汽車體;距離測(cè)量電感的計(jì)算橫向距離兩個(gè)橫向角落的車身和一個(gè)障礙;和一個(gè)電源電源光電耦合器的攝像機(jī)、距離測(cè)量電感、和顯示。圖像的障礙是鏡像加工,然后轉(zhuǎn)發(fā)到一個(gè)圖像合成器的圖像,轉(zhuǎn)移到一個(gè)視頻處理器和一個(gè)顯示所示。一個(gè)反向齒輪信號(hào)是有效的信號(hào)觸發(fā)電源。
本設(shè)計(jì)通常涉及到一個(gè)汽車逆向雷達(dá),特別是二世與距離測(cè)量和監(jiān)控設(shè)備裝備汽車反雷達(dá),這是提供給測(cè)量之間的距離汽車車身和一個(gè)障礙的超聲波測(cè)量方法和顯示他們已顯示,方便安全換向。
超聲波發(fā)生器內(nèi)部結(jié)構(gòu)有兩個(gè)壓電晶片和一個(gè)共振板。當(dāng)它的兩極外加脈沖信號(hào)，其頻率等于壓電晶片的固有振蕩頻率時(shí)，壓電晶片將會(huì)發(fā)生共振，并帶動(dòng)共振板振動(dòng)，便產(chǎn)生超聲波。反之，如果兩電極間未外加電壓，當(dāng)共振板接收到超聲波時(shí)，將壓迫壓電晶片作振動(dòng)，將機(jī)械能轉(zhuǎn)換為電信號(hào)，就成為超聲波接收器。
在超聲探測(cè)電路中，發(fā)射端得到輸出脈沖為一系列方波，其寬度為發(fā)射超聲與接收超聲的時(shí)間間隔，被測(cè)物距離越大，脈沖寬度越大，輸出脈沖個(gè)數(shù)與被測(cè)距離成正比。
本設(shè)計(jì)的主要對(duì)象是提供一個(gè)距離測(cè)量和監(jiān)控設(shè)備裝備汽車移動(dòng)反雷達(dá)聯(lián)合視頻合成技術(shù)的認(rèn)識(shí)和距離測(cè)量電感,使一個(gè)司機(jī)看清楚情況汽車車身后面從而消除任何死角當(dāng)瀏覽通過(guò)后面的鏡子,另一方面看到數(shù)字化距離顯示器,以確保一個(gè)安全的換向。
另一個(gè)對(duì)象的設(shè)計(jì)是提供一個(gè)距離測(cè)量和監(jiān)控設(shè)備裝備汽車移動(dòng)反雷達(dá),可以顯示溫度并通過(guò)障礙顯示有沒(méi)有司機(jī)。為了實(shí)現(xiàn)監(jiān)控對(duì)象,距離監(jiān)控裝置裝備汽車逆向雷達(dá)的設(shè)計(jì)包含:一個(gè)光電耦合器相機(jī)用廣角鏡頭安裝在一輛汽車的后部拍照可以看清障礙背后的汽車體;
人耳能聽(tīng)到的聲音頻率為20Hz～20kHz，在此頻率范圍內(nèi)的聲波可聽(tīng)，如果超出此頻率范圍的聲音，稱為低頻聲波，20kHz以上的聲音稱為超聲波，通常人說(shuō)話的的頻率范圍為100Hz～8kHz。
超聲波為直線傳播方式，頻率越高，繞射能力越弱，但反射能力越強(qiáng)，因此超聲波傳感器就是利用超聲波的這種性質(zhì)制成的。此外，超聲波在空氣中傳播的速度相對(duì)較慢，約為332m/s，利用超聲波的這種特性，我們可以很容易的制作一個(gè)超聲波倒車?yán)走_(dá)。
超聲波傳感器有發(fā)送探頭和接收探頭，但一個(gè)超聲波傳感器也可以具有發(fā)送和接收聲波的雙重作用，即為可逆元件。一般市場(chǎng)上出售的超聲波傳感器有專用型和兼用型，專用型就是發(fā)送器用作發(fā)送超聲波，接收器用作接收超聲波；兼用型就是發(fā)送器和接收器為一體傳感器，即可發(fā)送超聲波，又可接收超聲波。超聲波傳感器的諧振頻率(中心頻率)有23kHz、40kHz、75kHz、200kHz、400kHz等。諧振頻率變高，則檢測(cè)距離變短，分解力也變高，此次設(shè)計(jì)中，我們選用的是40KHz的頻率，汽車倒車?yán)走_(dá)上的應(yīng)用將會(huì)越來(lái)越廣泛。在未來(lái)的汽車設(shè)計(jì)中，超聲波測(cè)量距離儀作為一種新型的技術(shù)在各方面都將有很大的發(fā)展空間，未來(lái)它將會(huì)向著高定位、高精度、低功耗、高穩(wěn)定性的方向發(fā)展，以滿足日益發(fā)展的社會(huì)需求。超聲波發(fā)展趨勢(shì)基本為：研制具有更高定位精度的被動(dòng)測(cè)量距離系統(tǒng)，以滿足汽車安全性的需要。無(wú)庸置疑，未來(lái)的超聲波測(cè)量距離儀將與自動(dòng)化智能化接軌，與其他的測(cè)量距離儀集成和融合，形成多測(cè)量距離儀。隨著測(cè)量距離儀的技術(shù)進(jìn)步，測(cè)量距離儀將從具有單純判斷功能發(fā)展到具有學(xué)習(xí)功能，最終發(fā)展到具有創(chuàng)造力。在新的世紀(jì)里，面貌一新的測(cè)量距離儀將發(fā)揮更大的作用。
作者：Shili-Hsiung Li ；Hangchow ；
國(guó)籍：USA
出處：United States Patent
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