基于單片機(jī)的電子電子秤的設(shè)計(jì)外文文獻(xiàn)原文及翻譯(共14頁)

1、精選優(yōu)質(zhì)文檔-傾情為你奉上 淮 陰 工 學(xué) 院畢業(yè)設(shè)計(jì)(論文)外文資料翻譯學(xué) 院：專 業(yè)：姓 名：學(xué) 號(hào)：外文出處：Electronic Scales附 件：1.外文資料翻譯譯文；2.外文原文。指導(dǎo)教師評(píng)語： 年月日簽名： 注：請(qǐng)將該封面與附件裝訂成冊(cè)。附件1：外文資料翻譯譯文 電子秤 電子秤是稱重技術(shù)中的一種新型儀表，廣泛應(yīng)用于各種場(chǎng)合。電子秤與機(jī)械秤比較有體積小、重量輕、結(jié)構(gòu)簡(jiǎn)單、價(jià)格低、實(shí)用價(jià)值強(qiáng)、維護(hù)方便等特點(diǎn)，可在各種環(huán)境工作，重量信號(hào)可遠(yuǎn)傳，易于實(shí)現(xiàn)重量顯示數(shù)字化，易于與計(jì)算機(jī)聯(lián)網(wǎng)，實(shí)現(xiàn)生產(chǎn)過程自動(dòng)化，提高勞動(dòng)生產(chǎn)率。標(biāo)簽秤在超市中的應(yīng)用已經(jīng)是耳聞目睹的了。一張小小的標(biāo)簽包含著：品

2、名、價(jià)格、重量等，一一列表在這小小的電子標(biāo)簽上。標(biāo)簽機(jī)的使用大大加快了銷售速度，也方便了顧客。頂尖條碼標(biāo)簽秤有著許多卓越的特點(diǎn)，以太網(wǎng)功能使管理更加方便。電子秤的分類(衡器可以分為機(jī)械式和電子式)1 工作原理：電子式的工作原理以電子元件（稱重傳感器，AD轉(zhuǎn)換電路，單片機(jī)電路，顯示電路，鍵盤電路，通訊接口電路，穩(wěn)壓電源電路等電路組成。 2 使用功能：電子衡器采用現(xiàn)代傳感器技術(shù)、電子技術(shù)和計(jì)算機(jī)技術(shù)一體化的電子稱量裝置，才能滿足并解決現(xiàn)實(shí)生活中提出的"快速、準(zhǔn)確、連續(xù)、自動(dòng)"稱量要求，同時(shí)有效地消除人為誤差，使之更符合法制計(jì)量管理和工業(yè)生產(chǎn)過程控制的應(yīng)用要求。 3 健康秤是衡器

3、使用功能中的一個(gè)分類（分為機(jī)械式和電子式），物美價(jià)廉，它可以幫助人們有效的監(jiān)視自己的體重變化，新產(chǎn)品還可以檢測(cè)自己的脂肪含量，而且還有一些人性化的附屬功能?？赡懿粚儆谟?jì)量器具。 4 電子衡器是國家強(qiáng)制檢定的計(jì)量器具，他的合格產(chǎn)品是有檢定分度值e和細(xì)分值D的標(biāo)準(zhǔn)，是受國家計(jì)量法保護(hù)的產(chǎn)品。在電子衡器分類中有一種叫“人體秤”的產(chǎn)品，它可以在計(jì)量部門進(jìn)行檢定，稱重很精確。電子秤的原理方框圖解讀：第一部分 電子秤的原理方框圖： 程式 K/B(按鍵) Fx 傳感器 OP放大 A/D轉(zhuǎn)換 CPU 顯示驅(qū)動(dòng) 顯示屏 記憶體 工作流程說明： 當(dāng)物體放在秤盤上時(shí)，壓力施給傳感器，該傳感器發(fā)生形變，從而使阻抗發(fā)生

4、變化，同時(shí)使用激勵(lì)電壓發(fā)生變化，輸出一個(gè)變化的模擬信號(hào)。該信號(hào)經(jīng)放大電路放大輸出到模數(shù)轉(zhuǎn)換器。轉(zhuǎn)換成便于處理的數(shù)字信號(hào)輸出到CPU運(yùn)算控制。CPU根據(jù)鍵盤命令以及程序?qū)⑦@種結(jié)果輸出到顯示器，直至顯示這種結(jié)果。 第二部分 秤的分類： 1.按原理分：電子秤機(jī)械秤 機(jī)電結(jié)合秤 2.按功能分：計(jì)數(shù)秤 計(jì)價(jià)秤 計(jì)重秤 3.按用途分：工業(yè)秤商業(yè)秤 特種秤。第三部分 秤的種類： 1.桌面秤 指全稱量在30Kg以下的電子秤 2.臺(tái)秤 指全稱量在30-300Kg以內(nèi)的電子秤 3.地磅 指全稱量在300Kg以上的電子秤 4.精密天平。第四部分 按精確度分類： I級(jí)： 特種天平 精密度1/10萬 II級(jí)： 高精度天

5、平 1/1萬精密度1/10萬 III級(jí)： 中精度天平 1/1000精密度1/1萬 IV級(jí)： 普通秤 1/100精密度1/1000。第五部分 專業(yè)術(shù)語： 1.最大稱量： 一臺(tái)電子秤不計(jì)皮重，所能稱量的最大的載荷；2.最小稱量：一臺(tái)電子秤在低于該值時(shí)會(huì)出現(xiàn)的一個(gè)相對(duì)誤差；3.安全載荷： 120%正常稱量范圍； 4.額定載荷： 正常稱量范圍； 5.允許誤差： 等級(jí)檢定時(shí)允許的最大偏差; 6.感量： 一臺(tái)電子秤所能顯示的最小刻度，通常用“d”來表示； 7.解析量： 一臺(tái)具有計(jì)數(shù)功能的電子秤，所能分辯的最小刻度； 8.解析度： 一臺(tái)具有計(jì)數(shù)功能的電子秤，內(nèi)部具有分辯能力的一個(gè)參數(shù)；9.預(yù)熱時(shí)間：一臺(tái)秤達(dá)

6、到各項(xiàng)指標(biāo)所用的時(shí)間；10.精度： 感量與全稱量的比值；11.電子秤使用環(huán)境溫度為： -10攝氏度 到 40攝氏度 12.臺(tái)秤的臺(tái)面規(guī)格：25cm X 30cm 30cm X 40cm 40cm X 50cm 42cm X 52cm 45cm X 60cm 。第六部分 電子秤的特點(diǎn)： 1.實(shí)現(xiàn)遠(yuǎn)距離操作；2實(shí)現(xiàn)自動(dòng)化控制；3.數(shù)字顯示直觀、減小人為誤差；4.準(zhǔn)確度高、分辯率強(qiáng)；5.稱量范圍廣； 6.特有功能：扣重、預(yù)扣重、歸零、累計(jì)、警示等；7.維護(hù)簡(jiǎn)單；8.體積??； 9.安裝、校正簡(jiǎn)單； 10.特種行業(yè)，可接打印機(jī)或電腦驅(qū)動(dòng)；11.智能化電子秤，反應(yīng)快，效率高。第七部分 電子秤檢查過程： 1

7、.首先整體檢查：有無磨損和損壞； 2.能否開機(jī)：開機(jī)后是否從0到9依次顯示、數(shù)字是否模糊、能否歸零；3.有無背光；4.用砝碼測(cè)試能否稱重；5.充電器是否完好，能否使用；6.配件是否齊全。第八部分 傳感器類型： 1.電阻式：價(jià)格適中、精度高、使用廣泛； 2.電容式：體積小、精度低；3.磁浮式：特高精度、造價(jià)高；4.油壓式：現(xiàn)市場(chǎng)上已淘汰； 顯示器種類： 1.LCD（液晶顯示）：免插電、省電、附帶背光；2.LED：免插電、耗電、很亮； 3.燈管：插電、耗電、很高；K/B（按鍵）類型： 1.薄膜按鍵：觸點(diǎn)式； 2.機(jī)械按鍵：由許多單獨(dú)按鍵組合在一起；傳感器的特性： 1.額定載荷；2.輸出靈敏度； 3

8、.非線性；4.滯后；5.重復(fù)性；6.蠕變；7.零點(diǎn)輸出影響；8.額定輸出溫度影響；9.零點(diǎn)輸入；10.輸入阻抗；11.輸出阻抗；12.絕緣阻抗；13.容許激勵(lì)電壓 (5-18V)。第九部分 傳感器損壞后現(xiàn)象： 1.稱量不準(zhǔn)；2.顯示不歸零；3.顯示的數(shù)字亂跳 判斷傳感器的+E、-E、+S、-S 1.先用電阻檔測(cè)4條線兩兩這間的電阻值，共有6組。如為400-450歐則為+E、-E；如果為350歐，則為+S、-S；為290歐，則為R橋臂； 2.在+E、-E端接上+_1.5V電壓，傳感器正確施加一個(gè)壓力，如輸出+_S增大，則紅表筆為+S，反之-S。第十部分 高精度計(jì)數(shù)秤特點(diǎn)：1.Kg/Ibo單位轉(zhuǎn)換

9、功能；2.零點(diǎn)顯示范圍、調(diào)整功能(GLH系列沒有) 3.取樣速度調(diào)節(jié)功能；4.有10組單重記憶功能； 5.可同時(shí)進(jìn)行重量、數(shù)量、累計(jì)功能(GLH只有數(shù)量累計(jì)) 6.可設(shè)定重量、數(shù)量上限警示功能；7.自動(dòng)零點(diǎn)追蹤、溫度線性校正；8.扣重及預(yù)扣重功能；9.待機(jī)功能； 10.有零點(diǎn)顯示范圍和零點(diǎn)跟蹤范圍； 11.有電池電壓管制限制功能。電子秤是稱重技術(shù)中的一種新型儀表，廣泛應(yīng)用于各種場(chǎng)合。電子秤與機(jī)械秤比較有體積小、重量輕、結(jié)構(gòu)簡(jiǎn)單、價(jià)格低、實(shí)用價(jià)值強(qiáng)、維護(hù)方便等特點(diǎn)，可在各種環(huán)境工作，重量信號(hào)可遠(yuǎn)傳，易于實(shí)現(xiàn)重量顯示數(shù)字化，易于與計(jì)算機(jī)聯(lián)網(wǎng)，實(shí)現(xiàn)生產(chǎn)過程自動(dòng)化，提高勞動(dòng)生產(chǎn)率。電子秤還具有自動(dòng)零點(diǎn)

10、追蹤，超負(fù)荷顯示自動(dòng)熄滅之特點(diǎn)。將機(jī)械磅秤、地上衡/地中衡（汽車衡）、軌道衡等裝上力敏傳感器和單片機(jī)控制的智能稱重儀表即成為智能數(shù)字式機(jī)電秤（或機(jī)電兩用秤），提高了機(jī)械秤的計(jì)量精度，具有造價(jià)低廉、可靠性高、安裝簡(jiǎn)單等特點(diǎn)，且不影響原機(jī)械秤任何傳力結(jié)構(gòu)。還有去皮、置零、累計(jì)次數(shù)、累計(jì)重量（計(jì)價(jià)型的累計(jì)金額）、零位自動(dòng)調(diào)整、自動(dòng)跟蹤等功能。稱重?cái)?shù)據(jù)可直接打印或經(jīng)計(jì)算機(jī)聯(lián)網(wǎng)傳送，工業(yè)用秤可提高工藝水平和產(chǎn)品質(zhì)量，商貿(mào)用秤可提高結(jié)算信譽(yù)，帶來不可估量的社會(huì)效益和經(jīng)濟(jì)效益。電子秤基本上由傳感器、放大電路、A/D變換電路、單片機(jī)控制顯示部分、開關(guān)矩陣電路、鍵盤電路及電源電路組成。傳感器將重量信號(hào)轉(zhuǎn)換為相應(yīng)

11、的電信號(hào)，經(jīng)放大后送入A/D變換成脈沖數(shù)重量，經(jīng)過單片機(jī)控制下將模擬電壓信號(hào)轉(zhuǎn)換成數(shù)字量。這個(gè)數(shù)字量經(jīng)單片機(jī)程序轉(zhuǎn)換成與實(shí)際重量一致的數(shù)字值送顯示窗顯示。單片機(jī)同時(shí)對(duì)鍵盤及開關(guān)矩陣進(jìn)行監(jiān)測(cè)。根據(jù)輸入的參數(shù)值，程序作出相應(yīng)的處理。電源電路提供各部分的工作電壓。微處理器采用如8050、HDF、8031等CPU。主板通用性很強(qiáng)，不同量程和分度值的秤，僅需調(diào)整主板上的跳線和撥碼開關(guān)就可實(shí)現(xiàn)，唯一不同的是配用的傳感器的額定承載能力。傳感器是一種物理裝置或生物器官，能夠探測(cè)、感受外界的信號(hào)、物理?xiàng)l件（如光、熱、濕度）或化學(xué)組成（如煙霧），并將探知的信息傳遞給其他裝置或器官。 傳感器的定義：國家標(biāo)準(zhǔn)GB76

12、65-87對(duì)傳感器下的定義是：“能感受規(guī)定的被測(cè)量并按照一定的規(guī)律轉(zhuǎn)換成可用信號(hào)的器件或裝置，通常由敏感元件和轉(zhuǎn)換元件組成”。傳感器是一種檢測(cè)裝置，能感受到被測(cè)量的信息，并能將檢測(cè)感受到的信息，按一定規(guī)律變換成為電信號(hào)或其他所需形式的信息輸出，以滿足信息的傳輸、處理、存儲(chǔ)、顯示、記錄和控制等要求。它是實(shí)現(xiàn)自動(dòng)檢測(cè)和自動(dòng)控制的首要環(huán)節(jié)。傳感器的作用：人們?yōu)榱藦耐饨绔@取信息，必須借助于感覺器官。而單靠人們自身的感覺器官，在研究自然現(xiàn)象和規(guī)律以及生產(chǎn)活動(dòng)中它們的功能就遠(yuǎn)遠(yuǎn)不夠了。為適應(yīng)這種情況，就需要傳感器。因此可以說，傳感器是人類五官的延長(zhǎng)，又稱之為電五官。 新技術(shù)革命的到來，世界開始進(jìn)入信息時(shí)代

13、。在利用信息的過程中，首先要解決的就是要獲取準(zhǔn)確可靠的信息，而傳感器是獲取自然和生產(chǎn)領(lǐng)域中信息的主要途徑與手段。 在現(xiàn)代工業(yè)生產(chǎn)尤其是自動(dòng)化生產(chǎn)過程中，要用各種傳感器來監(jiān)視和控制生產(chǎn)過程中的各個(gè)參數(shù)，使設(shè)備工作在正常狀態(tài)或最佳狀態(tài)，并使產(chǎn)品達(dá)到最好的質(zhì)量。因此可以說，沒有眾多的優(yōu)良的傳感器，現(xiàn)代化生產(chǎn)也就失去了基礎(chǔ)。 在基礎(chǔ)學(xué)科研究中，傳感器更具有突出的地位?，F(xiàn)代科學(xué)技術(shù)的發(fā)展，進(jìn)入了許多新領(lǐng)域：例如在宏觀上要觀察上千光年的茫茫宇宙，微觀上要觀察小到 cm的粒子世界，縱向上要觀察長(zhǎng)達(dá)數(shù)十萬年的天體演化，短到 s的瞬間反應(yīng)。此外，還出現(xiàn)了對(duì)深化物質(zhì)認(rèn)識(shí)、開拓新能源、新材料等具有重要作用的各種極端

14、技術(shù)研究，如超高溫、超低溫、超高壓、超高真空、超強(qiáng)磁場(chǎng)、超弱磁碭等等。顯然，要獲取大量人類感官無法直接獲取的信息，沒有相適應(yīng)的傳感器是不可能的。許多基礎(chǔ)科學(xué)研究的障礙，首先就在于對(duì)象信息的獲取存在困難，而一些新機(jī)理和高靈敏度的檢測(cè)傳感器的出現(xiàn)，往往會(huì)導(dǎo)致該領(lǐng)域內(nèi)的突破。一些傳感器的發(fā)展，往往是一些邊緣學(xué)科開發(fā)的先驅(qū)。 傳感器早已滲透到諸如工業(yè)生產(chǎn)、宇宙開發(fā)、海洋探測(cè)、環(huán)境保護(hù)、資源調(diào)查、醫(yī)學(xué)診斷、生物工程、甚至文物保護(hù)等等極其之泛的領(lǐng)域?？梢院敛豢鋸埖卣f，從茫茫的太空，到浩瀚的海洋，以至各種復(fù)雜的工程系統(tǒng)，幾乎每一個(gè)現(xiàn)代化項(xiàng)目，都離不開各種各樣的傳感器。 由此可見，傳感器技術(shù)在發(fā)展經(jīng)濟(jì)、推動(dòng)社

15、會(huì)進(jìn)步方面的重要作用，是十分明顯的。世界各國都十分重視這一領(lǐng)域的發(fā)展。相信不久的將來，傳感器技術(shù)將會(huì)出現(xiàn)一個(gè)飛躍，達(dá)到與其重要地位相稱的新水平。 傳感器的分類：可以用不同的觀點(diǎn)對(duì)傳感器進(jìn)行分類：它們的轉(zhuǎn)換原理(傳感器工作的基本物理或化學(xué)效應(yīng))；它們的用途；它們的輸出信號(hào)類型以及制作它們的材料和工藝等。 根據(jù)傳感器工作原理，可分為物理傳感器和化學(xué)傳感器二大類 ：傳感器工作原理的分類物理傳感器應(yīng)用的是物理效應(yīng)，諸如壓電效應(yīng)，磁致伸縮現(xiàn)象，離化、極化、熱電、光電、磁電等效應(yīng)。被測(cè)信號(hào)量的微小變化都將轉(zhuǎn)換成電信號(hào)。 化學(xué)傳感器包括那些以化學(xué)吸附、電化學(xué)反應(yīng)等現(xiàn)象為因果關(guān)系的傳感器，被測(cè)信號(hào)量的微小變化

16、也將轉(zhuǎn)換成電信號(hào)。 有些傳感器既不能劃分到物理類，也不能劃分為化學(xué)類。大多數(shù)傳感器是以物理原理為基礎(chǔ)運(yùn)作的?；瘜W(xué)傳感器技術(shù)問題較多，例如可靠性問題，規(guī)模生產(chǎn)的可能性，價(jià)格問題等，解決了這類難題，化學(xué)傳感器的應(yīng)用將會(huì)有巨大增長(zhǎng)。 傳感器動(dòng)態(tài)特性：所謂動(dòng)態(tài)特性，是指?jìng)鞲衅髟谳斎胱兓瘯r(shí)，它的輸出的特性。在實(shí)際工作中，傳感器的動(dòng)態(tài)特性常用它對(duì)某些標(biāo)準(zhǔn)輸入信號(hào)的響應(yīng)來表示。這是因?yàn)閭鞲衅鲗?duì)標(biāo)準(zhǔn)輸入信號(hào)的響應(yīng)容易用實(shí)驗(yàn)方法求得，并且它對(duì)標(biāo)準(zhǔn)輸入信號(hào)的響應(yīng)與它對(duì)任意輸入信號(hào)的響應(yīng)之間存在一定的關(guān)系，往往知道了前者就能推定后者。最常用的標(biāo)準(zhǔn)輸入信號(hào)有階躍信號(hào)和正弦信號(hào)兩種，所以傳感器的動(dòng)態(tài)特性也常用階躍響應(yīng)和

17、頻率響應(yīng)來表示。 附件2：外文原文 Electronic Scales Electronic scales are weighing technology in a new type of instrument is widely used in various occasions. Electronic scales and mechanical scales have more small size, light weight, simple structure, low price and practical value of strong, convenient maintenance

18、 and so on can be in a variety of environmental work, the weight of the signal can be Remote, the weight of display is easy to implement digital, easy-to-computer network, production automation, higher labor productivity. Scale labels in the supermarket is in the application of face value. A small l

19、abel contains: name, price, weight, etc. 11 list in this small electronic label. Greatly accelerated the use of label machine sales pace, but also convenient for customers. Top barcode labels have many remarkable features of scale, Ethernet feature makes the management more convenient. Electronic Sc

20、ale Classification (scales can be divided into mechanical and electronic type)1 How it works: electronic works in electronic components (weighing sensor, AD conversion circuit, microcontroller circuits, display circuit, keyboard circuitry, communications interface circuits, regulated power supply ci

21、rcuit circuit. 2 using the function: electronic weighing the use of modern sensor technology, electronics and computer technology integration, electronic weighing devices, in order to meet and solve real life's "fast, accurate, continuous, automatic" weighing requirements, while effect

22、ively eliminating human error, to make it more in line with the management of legal metrology and industrial production process control applications. 3. Three health scales are weighing the use of features in a category (divided into mechanical and electronic), inexpensive, it can help people to eff

23、ectively monitor their own body weight changes, new products also can detect their fat content, but also Some human-oriented subsidiary functions. May not be part of measuring equipment. 4 Electronic Scale is a measurement of the state compulsory test apparatus, and his qualified products are test i

24、ndexing the value of D values of e and subdivision standards, is subject to the protection of the national metrology products. In the electronic weighing there is a category called "human scale" products, which can test in the measurement sector, weighing very precise. Block diagram interp

25、retation of the principle of electronic balance The first part of the electronic scale principle block diagram: Program K / B (button) Fx Sensors OP Zoom A / D converter CPU display driver display memory Workflow Note: When an object on the pan when the pressure facilities to the sensor that occurre

26、d deformation, so that resistance to change, while the use of excitation voltage changes, the output of a change in analog signal. This signal amplification by the amplifier output to the ADC. Converted to facilitate the processing of the digital signal output to the CPU operator control. CPU under

27、the keyboard commands and program output to display this result. Until the show such a result. The second part of the scale of the classification: 1. According to principles of points: E-scale mechanical scale mechanical and electrical integration scales 2. According to the functions sub: Counting S

28、cales Weighing Scale Pricing Scale 3. Purpose: Industrial Commercial Scales Special Scales Balance The third part of the scale types: 1. The full name of the desktop Scale refers to the volume of less than 30Kg electronic scale 2. The full name of platform scale refers to the volume within the 30-30

29、0Kg Electronic Scale 3. Loadometer full name refers to the volume of more than 300Kg Electronic Scale 4. Precision Balance 4th Part of the accuracy of classification: I Class: Special scales precision 1 / 10 Wan II level: high-precision scale 1 / 10000 precision of "1 / 100,000 III: the accurac

30、y of scale 1 / 1000 precision of "1 / 10000 Class IV: Common Scale 1 / 100 precision of" 1 / 1000.Part V of professional terminology: 1. Maximum weighing: an electron balance, excluding tare weight, the maximum load can weigh; 2. Minimum weigh: a electronic scales below the value that woul

31、d have occurred when a relatively error; 3. safe load: 120% of the normal weighing range; 4. Rated load: normal weighing range; 5. permissible error: class test when the maximum deviation; 6. a sense of quantity: a single electronic scales can show the smallest scale; usually "d" to repres

32、ent; 7. analytic capacity: a function with a count of the electronic scales, can distinguish the smallest scale; 8. Resolution: a counting function with an electronic scale, the internal capacity of a Resolution of a parameter; 9. Warm-up time: a scale used to achieve the targets of the time; 10. Ac

33、curacy: The full name of a sense of volume and volume ratios; 11. electronic scale use of environmental temperature: -10 degrees Celsius to 40 degrees Celsius 12. platform scale The table size: 25 cm X 30 cm 30 cm X 40cm 40 cm X 50 cm 42 cm X 52 cm 45 cm X 60 cm Part VI electronic scale features: 1.

34、 To achieve long-distance operations; 2. To achieve automatic control; 3. Figures show that an intuitive, reduce human error; 4. High accuracy and resolution strong; 5. Weighing range is wide; 6 . unique features: buckle weight, withholding weight, zero, accumulated, warning, etc.; 7. maintenance si

35、mple; 8. size is small; 9. installation, calibration simple; 10. special industry, can be accessed by the printer or computer-driven; 11. Intelligent electronic scale, quick reaction, high efficiency; Part VII of the electronic scale inspection process: 1. First, the overall examination: whether the

36、 wear and tear; 2. Whether the boot: the boot sequence is from 0 to 9 in turn shows that figures are vague, can zero; 3. Whether the backlight ; 4. with the weight tests in weighing; 5. chargers is intact, can use; 6. parts are complete; Part VIII sensor type: 1. Resistive: affordable, high accuracy

37、, widely used; 2. Capacitive: small size, low precision; 3. Maglev-style: special high-precision, high cost; 4. Hydraulic formula: the current the market has been eliminated; Display Type: 1.LCD (liquid crystal display): free electricity, energy-saving, with backlight; 2.LED: free electricity, power

38、 consumption, very bright; 3. Lamp: electricity, power consumption , high; K / B (button) type: 1. film button: contact type; 2. mechanical buttons: made up of many individual combinations of keys together; sensor characteristics: 1. rated load; 2. output sensitivity; 3. non-linear; 4. hysteresis; 5

39、. repeatable; 6. creep; 7. 12:00 output effects; 8. rated output temperature; 9. 12:00 input; 10. input impedance; 11. output impedance; 12. Insulation Resistance ; 13. to allow excitation voltage; (5-18V) Part IX sensor damaged phenomenon: 1. Weighing not allowed; 2. Shows no return to zero; 3. Sho

40、ws the number of bounce to judge the sensor + E,-E, + S,-S 1. The first to use resistance profile measurement 4-line 22 This resistance value, a total of 6 groups. The case of 400-450, compared with Europe + E,-E; if it is 350 in Europe, compared to + S,-S; for the 290 in Europe, compared to R-arm;

41、2. + E,-E terminated on the + 1.5V voltage Sensor correctly to exert a pressure, such as the output + _S increase, then the red table pens as + S, the contrary-S; 10th part of the high-precision counting scale features: 1.Kg/Ib unit conversion functions; 2. 12:00 display range adjustment function (G

42、LH series does not) 3. Sampling speed adjustment function; 4. There are 10 groups memory function singlet; 5. may be at the same time the weight, quantity, the cumulative function (GLH only the number of cumulative) 6. can set the weight, the maximum amount of warning function; 7. automatic zero tra

43、cking, temperature linear correction; 8. deduction of withholding heavy weight and function; 9. Standby function; 10. there is zero shows zero tracking range and scope; 11. there is the battery voltage control to limit the function; Electronic scales are weighing technology in a new type of instrume

44、nt is widely used in various occasions. Electronic scales and mechanical scales have more small size, light weight, simple structure, low price and practical value of strong, convenient maintenance and so on can be in a variety of environmental work, the weight of the signal can be Remote, the weigh

45、t of display is easy to implement digital, easy-to-computer networking, process automation of production and improve labor productivity. Electronic Scale also has an automatic zero tracking, overload display of self-extinguishing characteristics. Mechanical scales, floor scale / land in the value (c

46、ar value), weigh-bridges and other fitted force-sensitive sensors and microcomputer-controlled intelligent weighing instruments become intelligent digital electrical and mechanical balance (or the mechanical and electrical dual-use scales), to improve the mechanical balance of the measurement accura

47、cy, with low cost, high reliability, simple installation and so on, without prejudice to the original mechanical scales to any transmission bearing structure. There are peeled, set to zero, the cumulative number of times, the cumulative weight (cumulative amount of valuation-based), auto-zeroing, au

48、to-tracking and other functions. Weighing data can be directly printed or transmitted via computer networks, industrial processes can improve the level of scale and product quality, trade clearing with the scale can improve the credibility of incalculable social and economic benefits. Electronic Sca

49、le is basically a sensor, amplifier circuit, A / D conversion circuit, microcontroller control of display parts, switch matrix circuit, the keyboard circuit and power circuit. Weight sensor signals are converted to a corresponding electrical signal, after amplified into the A / D converted into puls

50、es weight, through the SCM under the control of the analog voltage signals into digital. The digital conversion by the SCM program in line with the actual weight of the value of sending the number of display windows. MCU at the same time the keyboard and switch matrix for monitoring. According to th

51、e input parameter values, the program handled accordingly. Power circuit to provide the various parts of the operating voltage. Microprocessors such as 8050, HDF, 8031, etc. CPU. Highly versatile motherboard, different values of range and sub-degree scales, just adjust the jumpers on the motherboard

52、 and the DIP switch can be achieved, the only difference is that the sensor used with a rated carrying capacitySensor is a physical device or biological organ that can detect and feel the outside of the signal, physical condition (such as light, heat, humidity) or chemical composition (such as smoke

53、), and Discovery of information to other devices or organs. Definition of sensorNational standard GB7665-87 sensor is defined as: "can feel the requirements are measured and converted in accordance with the laws of certain signal device or devices available, usually composed of sensitive compon

54、ents and conversion devices." Sensor is a detection device, can feel the information being measured, and can detect sense of information, according to certain laws of transformation into electrical signals, or other forms of information required for output to meet the information transmission,

55、processing, storage, display, recording and control requirements. It is the automatic detection and control of the primary link.The role of sensorPeople in order to obtain information from the outside world must help of sense organs. And rely on people's own sense organs, the study of natural ph

56、enomena and laws, and production activities in their functions on far enough. To meet this situation, we need sensors. It can be said sensor is an extension of human senses, also known as electronic features.The arrival of the new technological revolution, the world entered the information age. In t

57、he course of the use of information, we must first resolve is to obtain accurate and reliable information, and sensors is to obtain information in the field of natural and production of the main ways and means.In modern industrial production, especially automated production process, the use of vario

58、us sensors to monitor and control the various parameters of the production process, so that devices work best in the normal state or condition, and to achieve the best quality products. Therefore we can say, without a large number of good sensors, modern production base will be lost.In the basic sci

59、ence research, a more prominent position sensor. The development of modern science and technology into many new areas: for example, thousands of light years to observe the macro level of the vast universe, to observe microscopically small particles cm the world, vertical, to observe the evolution over hundreds of year