硬幣識(shí)別器畢業(yè)設(shè)計(jì)
2.2萬(wàn)字 39頁(yè)


摘 要
科技的發(fā)展帶動(dòng)了社會(huì)的發(fā)展，城市的公交系統(tǒng)也是社會(huì)發(fā)展夫人一種體現(xiàn)于是公交系統(tǒng)的更新?lián)Q代也是在所難免，車載的投幣系統(tǒng)經(jīng)歷了多次的發(fā)展過(guò)程，而假幣的出現(xiàn)將投幣器上升到了一個(gè)新的高度，投幣器必須加入貨幣識(shí)別系統(tǒng)，硬幣識(shí)別器是一種與投幣器結(jié)合使用的儀器。使用方便、檢測(cè)精度高并且有廣大的發(fā)展前景。
硬幣識(shí)別器只要識(shí)別現(xiàn)在國(guó)家發(fā)行的一元、五角、一角的硬幣。我國(guó)目前發(fā)行的1元,5角和1角硬幣的金屬原材料是為造幣而專門使用的特殊合金,因此在它通過(guò)投幣入口進(jìn)入由電感和電容組成的特定傳感器,金屬材質(zhì)和體積的差異對(duì)電容量和電感量的影響大小也出現(xiàn)微弱差異,電容量、電感量的變化引起電壓的變化;再通過(guò)檢測(cè)電路將信號(hào)放大,與設(shè)定值進(jìn)行比較,確定某種硬幣種類后,通過(guò)數(shù)字信號(hào)傳輸?shù)絾纹瑱C(jī)控制電路完成對(duì)金屬硬幣的識(shí)別。
關(guān)鍵詞：電容傳感器、電感傳感器、檢測(cè)電路、單片機(jī)控制電路。



Abstract
The development of technology led to the development of our society. The city bus system is a social development embodied his wife then transit system upgrades are inevitable. Vehicle coin system has experienced a number of the development process, and the emergence of counterfeit money for coin rose to a new height, coin device must join the monetary identification system for identification of coins is a coin with the combined use of the equipment. Easy to use, high precision and broad development prospects. Clifton coins now identify as long as a national issue, 2.50, 3.10 coins. China currently issued by the dollar to 50 cents and 10 cents coins metal materials for the exclusive use of mints and the special alloy, So it through the entrance into the coin by the inductance and capacitance of specific sensors, The metal material and size differences of capacity and inductance of the size differences have emerged weak, capacity, inductance voltage changes caused the change; through the detection of the signal amplification circuit, and setting values, identify certain types of coins, digital signal transmission to the MCU control circuit completion of the identification of metal coins.
Keywords: Capacitance sensor Inductance Sensor Detection Circuit SCM control circuit



目　　錄
摘 要 I
ABSTRACT II
目　　錄 III
第1章 緒 論 1
1.1硬幣與識(shí)別器的發(fā)展 1
1.1.1硬幣的發(fā)展 1
1.1.2 硬幣識(shí)別器的發(fā)展與分類 4
第2章 總體設(shè)計(jì)方案 6
2.1 總體設(shè)計(jì)思路 6
2.2總體方案的確定 6
第3章 電路與程序設(shè)計(jì) 9
3.1電路設(shè)計(jì) 9
3.2各組成電路原理與應(yīng)用 10
3.2.1電橋電路 10
3.2.2測(cè)量放大電路 11
3.2.3整流電路 13
3.2.4 濾波電路 17
3.2.5電壓比較器 19
3.2.6 AD轉(zhuǎn)換器 22
3.2.7單片機(jī)介紹： 23
3.2.8 AD574 和8051 單片機(jī)接口電路設(shè)計(jì)： 28
3.2.9光電耦合器 31
3.3 機(jī)械部分設(shè)計(jì) 32
結(jié) 論 33
謝 辭 34
參考文獻(xiàn) 35
附 錄 36


參考文獻(xiàn)
⑴：方建軍 林宋：《光機(jī)電一體化實(shí)技術(shù)》,化學(xué)工業(yè)出版社。
⑵：周雪 ：《模擬電子技術(shù)》，西安電子科技大學(xué)出版社。
⑶：田華 袁振東 ：《電子測(cè)量技術(shù)》, 西安電子科技大學(xué)出版社.
⑷: 謝志萍 :《傳感器與檢測(cè)技術(shù)》,電子工業(yè)出版社.