摘 要
本設(shè)計(jì)主要以Altera公司的maxⅡ系列的EPM570T100C CPLD為主要芯片,用一塊CPLD芯片加上外圍一些電路就可以完成保護(hù)信號(hào)檢測(cè)、處理和輸出經(jīng)過處理后的信號(hào)。本設(shè)計(jì)主要實(shí)現(xiàn)的電路功能是:16路保護(hù)信號(hào)的輸入,低電平有效;當(dāng)電路檢測(cè)到某一路率先動(dòng)作,則輸出一個(gè)低電平保護(hù)信號(hào),同時(shí)用LED顯示是哪路起保護(hù)。當(dāng)一路起保護(hù)時(shí),其它線路的保護(hù)信號(hào)必須被屏蔽起來(lái),直到被保護(hù)的信號(hào)不被保護(hù),屏蔽才能被解除。軟件的開發(fā)與系統(tǒng)功能仿真平臺(tái)為Quartus II 8.1。
關(guān)鍵詞:檢測(cè) CPLD 硬件描述語(yǔ)言
Abstract
The design mainly select Altera's maxⅡ series EPM570T100C CPLD as the main chip, using a CPLD chip and the external circuit to complete the protection signal detection、dealing with、exporting the processed signal. The implemented functions of the circuit are: 16 protected signal input, LOW is considered active; When the circuit detects the first movement in one road, then output a low protection signal, and which way to use LED display is protective and LED display which road being protective. When one road protecting, the other roads must be shielded, until the signal is not protected, shield can be lifted. The platform of Software development and system functionality is the Quartus 8.1.
Keyword:detection,CPLD,Hardware Description Language