【正文】 tky potential barrier detector: metal and semiconductor 19 contact, typically include PtSi/Si structure and form was Schott potential barrier, infrared photon through Si layer for PtSi absorption, electronic Fermi level, obtain energy leap over left cavitation potential barrier into the Si substrate, PtSi layer of electronic was collected, plete infrared detection. Make full use of Si integration technology, facilitate production, with lower cost and good uniformity wait for an advantage, but make it mass (1024 x 1024 even greater) focal plane array to make up for the defect of quantum low efficiency. Have strict low temperature requirements. With this kind of detector, both at home and abroad has already produced as qualitative good thermography. Pt Si/Si structure made of FPA is the earliest IRFPA. Timing counting and traffic calculation Using MCS 51 internal timer/counter for timing, cooperate software delay realizes the timer. This method hardware cost saving, cut allows the reader in timer/counter use, disruptions and programming get exercise and improve. Computation formula is as follows: TC = M C Type in, M for counter touch value, the value and the counter working way concerned. For a traffic intersection, it can in the shortest possible time to achieve maximum traffic, even reached the best performance, we call in unit of time to achieve the maximum flow multienergy for cars. Use the equation: (traffic = traffic/time) to represent. Intersection traffic lights used to create the general thoughts Cross the road traffic is traffic laws of the silent mands, is drivers and pedestrians standards of behaviour. Cross the road traffic lights control is the guarantee of traffic safety and the roads of the key. At present, the domestic most cities are adopting automatic red and green lights, it has fixed red light green conversion interval, and automatic switching. They generally by transit and prohibit time control display, red yellow green lights and direction indicator three parts. In the traffic light transit and prohibit time control and display, usually either eastwest and southnorth direction every 50 seconds。 According to the control principle differentiates: timing control, induced control and adaptive control. About watchdog circuit By singlechip micro puter system, because of single chip work often can be affected by external electromagic interference, causing program run fly while into dead circulation, the program39。因此最終只需寫出一組 S SS S4 的邏輯狀態(tài)表。目前，有一種使用 “模糊控制 ”技術(shù)控制交通燈的方法。十字道口的交通紅綠燈控制是保證交通安全和道路暢通的關(guān)鍵。用這類探測(cè)器，國(guó)內(nèi)外已生產(chǎn)出具有像質(zhì)良好的熱像儀。能量大于禁帶寬度的紅外光子在結(jié)區(qū)及其附近激發(fā)電子空穴對(duì)。量子光電效應(yīng)靈敏度高，響應(yīng)速度比熱探測(cè)器快得多，是選擇性探測(cè)器。道路交通信號(hào)控制的基本類型有多種分法。 （ 4）從各發(fā)光段電極連接方式分有共陽(yáng)極和共陰極兩種。 有關(guān)七段 LED 顯示器的介紹 通過(guò)發(fā)光二極管芯片的適當(dāng)連接（包括串聯(lián)和并聯(lián)）和適當(dāng)?shù)墓鈱W(xué)結(jié)構(gòu)。 (4).WR：寫入旌旗燈號(hào)，當(dāng)這個(gè)輸入引腳為低電平時(shí) ,即 /WR=0 且 /CS=0 時(shí) ,允許 CPU 將數(shù)據(jù)或控制字寫入 8255。程序進(jìn)入中斷服務(wù)后，這些標(biāo)志位都可以由硬件清 0。 P 1 . 01P 1 . 12P 1 . 23P 1 . 34P 1 . 45P 1 . 56P 1 . 67P 1 . 78R S T/ V p d9(R X D )P 3 .010(T X D )P 3 .111(IN T0 )P 3 .212(IN T1 )P 3 .313(T 0 )P 3 .414(T 1 )P 3 .515(W R )P 3 . 616(R D )P 3 .717X T A L218X T A L119E N D20P 2 0 (A 8 )21P 2 1 (A 9 )22P 2 2 (A 1 0 )23P 2 3 (A 1 1 )24P 2 4 (A 1 2 )25P 2 5 (A 1 3 )26P 2 6 (A 1 4 )27P 2 7 (A 1 5 )28P S E N29E A /V p d31A L E/ P R O G30P 0 . 7 (A D 7 )32P 0 . 6 (A D 6 )33P 0 . 5 (A D 5 )34P 0 . 4 (A D 4 )35P 0 . 3 (A D 3 )36P 0 . 2 (A D 2 )37P 0 . 1 (A D 1 )38P 0 . 0 (A D 0 )39V C C40 圖 1 8051 引腳分配圖 （ 2）中斷介紹 AT89C51 有 6 個(gè)中斷源：兩個(gè)外部中斷（ INT0 和 INT1 ），三個(gè)定時(shí)中斷（定時(shí)器 0、 2）和一個(gè)串行中斷。使用 Atmel 公司高密度非易失性存儲(chǔ)器技術(shù)制造，與工業(yè) 80S51 產(chǎn)品指令和引腳完全兼容。 前言 在實(shí)際應(yīng)用上，根據(jù)對(duì)國(guó)內(nèi)外實(shí)際交通信號(hào)控制應(yīng)用的考察，平面獨(dú)立交叉口信號(hào)控制基本采用定周期、多時(shí)段定周期、半感應(yīng)、全感應(yīng)等幾種方式。 指導(dǎo)教師評(píng)語(yǔ)： 該譯文選材得當(dāng)，符合該生畢業(yè)設(shè)計(jì)題目要求。例如：在冶金工業(yè)、化工生產(chǎn)、電力工程、造紙行業(yè)、機(jī)械制造和食品加工等諸多領(lǐng)域中，人們都需要對(duì)交通進(jìn)行有序的控制。 AT89C51 具有以下標(biāo)準(zhǔn)功能： 8k 字節(jié) Flash， 256 字節(jié) RAM， 32 位 I/O 口線，看門狗定時(shí)器， 2 個(gè)數(shù)據(jù)指針，三個(gè) 16 位定時(shí)器 /計(jì)數(shù)器，一個(gè) 6 向量 2 級(jí)中斷結(jié)構(gòu)，全雙工串行口，片內(nèi)晶振及時(shí)鐘電路。 位是不可用的。它們的值一直到下一個(gè)周期被電路捕捉下來(lái)。 (7).PB0~PB7：端口 B 輸入輸出線，一個(gè) 8 位的 I/O 鎖存器，一個(gè) 8 位的輸入輸出緩沖器。通常把數(shù)碼管、符號(hào)管、米字管共稱筆畫顯示器，而把筆畫顯示器和矩陣管統(tǒng)稱為字符顯示器。所有段的發(fā)光強(qiáng)度值中最大值與最小值之 比為發(fā)光強(qiáng)度比。 7 MAX692 是微系統(tǒng)監(jiān) 控電路芯片，具有后備電池切換、掉電判別、看門狗監(jiān)控等功能。入射光子激發(fā)均勻半導(dǎo)體中的價(jià)帶電子越過(guò)禁帶進(jìn)入導(dǎo)帶并在價(jià)帶留下空穴，引起電導(dǎo)增加，為本 征光電導(dǎo)。與光導(dǎo)探測(cè)器比較，光伏探測(cè)器背影限探測(cè)率大于 40％；不需要外加偏置電場(chǎng)和負(fù)載電阻，不消耗功率，有高的阻抗。該方法節(jié)省硬件成本，切能夠使讀者在定時(shí)器 /計(jì)數(shù)器的使用、中斷及程序設(shè)計(jì)方面得到鍛煉與提高。在交通燈的通行與禁止時(shí)間控制顯示中，通常要么東西、南北兩方向各 50 秒；要么根據(jù)交通規(guī)律，東西方向 60 秒，南北方向 40 秒，時(shí)間控制都是固定的。 圖 3 十字路口車道形狀圖 圖 4 為直方圖，上邊為北路口燈，右邊為東路口燈，下邊為南路口燈，左邊為西路口燈。 Air pollution and noise pollution degree of deepening, etc. Daily traffic jams bee people monplace and had to endure. In this context, in bination with the actual situation of urban road traffic, develop truly suitable for our own characteristics of intelligent signal control system has bee the main task. Preface In practical application at home and abroad, according to the actual traffic signal control application inspection, planar independent intersection signal control basic using set cycle, much time set cycle, half induction, whole sensor etc in several ways. The former two control mode is pletely based on planar intersection always traffic flow data of statistical investigation, due to traffic flow the existence of variable sex and randomicity, the two methods have traffic efficiency is low, the scheme, the defects of aging and half inductive and all the inductive the two methods are in the former two ways based on increased vehicle detector and according to the information provided to adjust cycle is long and green letter of vehicle, it than random arrived adaptability bigger, can make vehicles in the parking cord before as few parking, achieve traffic flowing effect In modern industrial production,current,voltage,temperature, pressure, and flow rate, velocity, and switch quantity are mon mainl