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降低示波器外觸發波形抖動的系統、數字芯片和示波器的制作方法

文檔序(xu)號:11351413閱讀:408來源:國(guo)知局(ju)
降低示波器外觸發波形抖動的系統、數字芯片和示波器的制造方法與工藝

本實用新型涉(she)及示波器(qi)(qi)領(ling)域,具體(ti)涉(she)及一種降低示波器(qi)(qi)外觸發波形抖動的系統、數字芯(xin)片(pian)和示波器(qi)(qi)。



背景技術:

在(zai)進行現代(dai)電子設(she)計時(shi),工程(cheng)師在(zai)關(guan)注其(qi)設(she)計中的(de)(de)(de)電子信(xin)號時(shi),經常會出現所需要觀測的(de)(de)(de)信(xin)號波(bo)(bo)形(xing)(xing)數目超(chao)過示(shi)波(bo)(bo)器模(mo)(mo)擬通(tong)道(dao)(dao)個數的(de)(de)(de)情(qing)況,因而需要將示(shi)波(bo)(bo)器的(de)(de)(de)觸(chu)(chu)發(fa)(fa)通(tong)道(dao)(dao)選擇為(wei)外(wai)觸(chu)(chu)發(fa)(fa)通(tong)道(dao)(dao)(與模(mo)(mo)擬通(tong)道(dao)(dao)相比,外(wai)觸(chu)(chu)發(fa)(fa)通(tong)道(dao)(dao)輸入的(de)(de)(de)波(bo)(bo)形(xing)(xing)不(bu)能(neng)在(zai)示(shi)波(bo)(bo)器上(shang)顯(xian)示(shi))。外(wai)觸(chu)(chu)發(fa)(fa)功能(neng)屬于模(mo)(mo)擬觸(chu)(chu)發(fa)(fa),在(zai)使用外(wai)觸(chu)(chu)發(fa)(fa)通(tong)道(dao)(dao)產生(sheng)的(de)(de)(de)觸(chu)(chu)發(fa)(fa)信(xin)號控制(zhi)波(bo)(bo)形(xing)(xing)采(cai)集時(shi),降低外(wai)觸(chu)(chu)發(fa)(fa)通(tong)道(dao)(dao)所帶來的(de)(de)(de)波(bo)(bo)形(xing)(xing)抖動(dong),提高波(bo)(bo)形(xing)(xing)采(cai)集的(de)(de)(de)穩定性是非常重要的(de)(de)(de)。

現有技術方案中首先將待測信號同時輸(shu)出(chu)到(dao)模(mo)(mo)擬通(tong)道(dao)(dao)及(ji)外觸(chu)發(fa)(fa)通(tong)道(dao)(dao)。外觸(chu)發(fa)(fa)通(tong)道(dao)(dao)輸(shu)入端(duan)輸(shu)入的(de)待測信號經(jing)過放大耦(ou)合電路(lu)送到(dao)外觸(chu)發(fa)(fa)模(mo)(mo)擬比(bi)較器(qi)后(hou)(hou)送給數(shu)字芯(xin)片(pian)。數(shu)字芯(xin)片(pian)采用(yong)其內部(bu)的(de)鎖相環從來自(zi)模(mo)(mo)數(shu)轉換器(qi)(ADC)的(de)隨路(lu)時鐘(zhong)中恢復(fu)出(chu)系統(tong)(tong)時鐘(zhong),用(yong)以產生(sheng)觸(chu)發(fa)(fa)脈(mo)(mo)沖(chong)。該觸(chu)發(fa)(fa)脈(mo)(mo)沖(chong)送到(dao)外部(bu)的(de)外觸(chu)發(fa)(fa)脈(mo)(mo)沖(chong)擴展電路(lu)中進行線性(xing)展寬后(hou)(hou)送回到(dao)數(shu)字芯(xin)片(pian)中。數(shu)字芯(xin)片(pian)使(shi)用(yong)自(zi)身工作的(de)系統(tong)(tong)時鐘(zhong)對線性(xing)展寬后(hou)(hou)的(de)脈(mo)(mo)沖(chong)進行統(tong)(tong)計,將統(tong)(tong)計值(zhi)轉換為(wei)觸(chu)發(fa)(fa)校正(zheng)值(zhi)。

假設(she)模數(shu)(shu)轉換器ADC的(de)采樣率(lv)為(wei)Fc,數(shu)(shu)字(zi)芯片(pian)的(de)系統(tong)時鐘周期(qi)為(wei)T,則(ze)(ze)數(shu)(shu)字(zi)芯片(pian)每(mei)個(ge)系統(tong)時鐘需要(yao)處理的(de)并(bing)行數(shu)(shu)據的(de)個(ge)數(shu)(shu)為(wei)M=Fc×T。且(qie)外觸發脈(mo)(mo)沖擴(kuo)展電路(lu)能夠支持(chi)在任(ren)何環境下均(jun)線性擴(kuo)展的(de)倍數(shu)(shu)是(shi)固定的(de),假定為(wei)N倍。則(ze)(ze)可知該(gai)擴(kuo)展電路(lu)的(de)分(fen)辨率(lv)R(每(mei)個(ge)脈(mo)(mo)沖統(tong)計周期(qi)所能表示的(de)采樣點(dian)的(de)數(shu)(shu)目)為(wei)R=M÷N=Fc×T÷N。從公(gong)式可知,當Fc越高時,R越大,也就是(shi)說單位(wei)時間的(de)點(dian)數(shu)(shu)越多,即分(fen)辨率(lv)越粗(cu)糙,所帶來的(de)波形抖動越大。

因此,現有技術有待改(gai)進和提高。



技術實現要素:

本(ben)申(shen)請提供一種(zhong)降低(di)(di)示(shi)波(bo)器(qi)(qi)外觸發波(bo)形抖(dou)動(dong)的系(xi)統、數(shu)字芯片(pian)和示(shi)波(bo)器(qi)(qi),通(tong)過產(chan)生一個頻(pin)率為系(xi)統時鐘(zhong)頻(pin)率的K倍的外觸發時鐘(zhong),根據所(suo)述外觸發時鐘(zhong)產(chan)生外觸發脈沖信(xin)號,以提高(gao)(gao)示(shi)波(bo)器(qi)(qi)采(cai)樣(yang)率,從而降低(di)(di)了波(bo)形的抖(dou)動(dong),提高(gao)(gao)了波(bo)形采(cai)集的穩定性。

根據本(ben)實用新型(xing)的第一方面(mian),本(ben)實用新型(xing)提供(gong)一種降(jiang)低示波器外觸發(fa)波形抖(dou)動的系統,包括:

外觸發通道,用于(yu)接收待測(ce)信號;

比(bi)較(jiao)模塊(kuai),用于將外觸發(fa)通道(dao)輸出(chu)的信(xin)號與比(bi)較(jiao)電平比(bi)較(jiao),將外觸發(fa)通道(dao)輸出(chu)的信(xin)號轉換為高低電平的外觸發(fa)信(xin)號;

觸(chu)發(fa)控制模塊(kuai),用于產生一個頻率為系統時(shi)鐘頻率的K倍(bei)的外觸(chu)發(fa)時(shi)鐘;根據所述外觸(chu)發(fa)時(shi)鐘和外觸(chu)發(fa)信(xin)(xin)號(hao),生成外觸(chu)發(fa)脈沖(chong)信(xin)(xin)號(hao);K大于1;

所述外(wai)觸(chu)發(fa)通道(dao)的輸出端通過比較模(mo)塊(kuai)連(lian)接觸(chu)發(fa)控(kong)制模(mo)塊(kuai)。

所(suo)述(shu)(shu)(shu)的降低示波(bo)器外觸(chu)發(fa)波(bo)形抖動(dong)的系統,其中,所(suo)述(shu)(shu)(shu)系統還包括(kuo)與所(suo)述(shu)(shu)(shu)觸(chu)發(fa)控制模(mo)塊(kuai)連接的外觸(chu)發(fa)脈沖擴展(zhan)電路,用于對所(suo)述(shu)(shu)(shu)外觸(chu)發(fa)脈沖信號進行線性(xing)展(zhan)寬。

所(suo)述(shu)的降(jiang)低示波器外觸發波形抖動的系統(tong),其中,所(suo)述(shu)觸發控(kong)制模塊包括:

鎖相(xiang)環(huan),用于從待(dai)測(ce)信號的隨路時鐘中恢復(fu)出系統時鐘,并(bing)產(chan)生一個頻率為所述系統時鐘頻率的K倍(bei)的外觸發時鐘;

外(wai)觸(chu)發脈(mo)沖生成(cheng)單元,用于根據所述外(wai)觸(chu)發時鐘和外(wai)觸(chu)發信號,生成(cheng)外(wai)觸(chu)發脈(mo)沖信號以控(kong)制波形采(cai)集;

時間片檢測(ce)單元(yuan),用(yong)于(yu)根據所述(shu)外觸發(fa)時鐘(zhong)將系(xi)統時鐘(zhong)周期分為K個時間片,并檢測(ce)出所述(shu)外觸發(fa)脈沖信號的(de)發(fa)生時間所處的(de)時間片;

擴展(zhan)脈(mo)沖寬(kuan)度(du)統計(ji)單元,用于統計(ji)線性(xing)展(zhan)寬(kuan)后(hou)的外觸(chu)發(fa)脈(mo)沖信號的寬(kuan)度(du),結(jie)合外觸(chu)發(fa)脈(mo)沖信號所處的時間片得(de)到觸(chu)發(fa)校正值(zhi),以對采集波形進行位置校正;

所述(shu)鎖相環的(de)(de)(de)(de)外觸(chu)(chu)(chu)發時鐘輸(shu)(shu)(shu)出端(duan)(duan)(duan)連(lian)接(jie)(jie)外觸(chu)(chu)(chu)發脈沖(chong)生成單(dan)元(yuan)的(de)(de)(de)(de)第(di)一輸(shu)(shu)(shu)入(ru)(ru)(ru)端(duan)(duan)(duan)、時間(jian)片檢(jian)(jian)測單(dan)元(yuan)的(de)(de)(de)(de)第(di)一輸(shu)(shu)(shu)入(ru)(ru)(ru)端(duan)(duan)(duan)和擴(kuo)展(zhan)(zhan)(zhan)(zhan)脈沖(chong)寬度統(tong)計(ji)單(dan)元(yuan)的(de)(de)(de)(de)第(di)一輸(shu)(shu)(shu)入(ru)(ru)(ru)端(duan)(duan)(duan);所述(shu)外觸(chu)(chu)(chu)發脈沖(chong)生成單(dan)元(yuan)的(de)(de)(de)(de)第(di)二輸(shu)(shu)(shu)入(ru)(ru)(ru)端(duan)(duan)(duan)連(lian)接(jie)(jie)比較模塊(kuai)的(de)(de)(de)(de)輸(shu)(shu)(shu)出端(duan)(duan)(duan),所述(shu)外觸(chu)(chu)(chu)發脈沖(chong)生成單(dan)元(yuan)的(de)(de)(de)(de)輸(shu)(shu)(shu)出端(duan)(duan)(duan)連(lian)接(jie)(jie)外觸(chu)(chu)(chu)發脈沖(chong)擴(kuo)展(zhan)(zhan)(zhan)(zhan)電路的(de)(de)(de)(de)輸(shu)(shu)(shu)入(ru)(ru)(ru)端(duan)(duan)(duan)和時間(jian)片檢(jian)(jian)測單(dan)元(yuan)的(de)(de)(de)(de)第(di)二輸(shu)(shu)(shu)入(ru)(ru)(ru)端(duan)(duan)(duan),所述(shu)時間(jian)片檢(jian)(jian)測單(dan)元(yuan)的(de)(de)(de)(de)輸(shu)(shu)(shu)出端(duan)(duan)(duan)連(lian)接(jie)(jie)擴(kuo)展(zhan)(zhan)(zhan)(zhan)脈沖(chong)寬度統(tong)計(ji)單(dan)元(yuan)的(de)(de)(de)(de)第(di)二輸(shu)(shu)(shu)入(ru)(ru)(ru)端(duan)(duan)(duan),所述(shu)外觸(chu)(chu)(chu)發脈沖(chong)擴(kuo)展(zhan)(zhan)(zhan)(zhan)電路的(de)(de)(de)(de)輸(shu)(shu)(shu)出端(duan)(duan)(duan)連(lian)接(jie)(jie)擴(kuo)展(zhan)(zhan)(zhan)(zhan)脈沖(chong)寬度統(tong)計(ji)單(dan)元(yuan)的(de)(de)(de)(de)第(di)三輸(shu)(shu)(shu)入(ru)(ru)(ru)端(duan)(duan)(duan)。

所述的(de)降低(di)示波器(qi)外(wai)觸發(fa)波形抖動的(de)系統,其中,所述系統還包括串接(jie)在外(wai)觸發(fa)通(tong)道(dao)和比(bi)較(jiao)模塊之間的(de)外(wai)觸發(fa)通(tong)道(dao)放大耦合電路,用(yong)于(yu)對外(wai)觸發(fa)通(tong)道(dao)輸出(chu)的(de)信號進行(xing)增(zeng)益控制及交流(liu)、直流(liu)耦合。

所述(shu)的(de)降低示波器外(wai)觸(chu)發波形(xing)抖(dou)動的(de)系統(tong),其中(zhong),所述(shu)系統(tong)還包括:

模擬通道,用于接(jie)收所(suo)述待測信(xin)號(hao);

波形通道(dao)放(fang)大及耦合電路,用于對模擬通道(dao)輸出(chu)的信號進行增(zeng)益控(kong)制及交流、直(zhi)流耦合;

模數轉換器,用(yong)于將(jiang)模擬波形信(xin)號(hao)轉換為數字波形信(xin)號(hao);

所述模擬(ni)通(tong)道的輸(shu)出(chu)端通(tong)過波形通(tong)道放大(da)及耦合電路(lu)連接模數(shu)轉(zhuan)換器的輸(shu)入端,所述模數(shu)轉(zhuan)換器的輸(shu)出(chu)端連接鎖相環。

所(suo)述的降低示波器(qi)外觸(chu)發波形抖動的系統,其中(zhong),所(suo)述觸(chu)發控制模(mo)塊還包括:

ADC接口;

降采(cai)樣(yang)及存儲模(mo)塊,用(yong)于對ADC接口輸(shu)出(chu)的(de)并行(xing)(xing)數據流進行(xing)(xing)降采(cai)樣(yang)和(he)/或存儲;

ADC接(jie)口的輸入(ru)端(duan)連(lian)(lian)接(jie)模(mo)數轉換(huan)器的輸出(chu)端(duan),ADC接(jie)口的輸出(chu)端(duan)連(lian)(lian)接(jie)降采樣及存儲模(mo)塊,所(suo)述(shu)降采樣及存儲模(mo)塊還連(lian)(lian)接(jie)鎖相環的系統(tong)時鐘輸出(chu)端(duan)。

所述的(de)降(jiang)低示波器外(wai)觸(chu)發波形(xing)抖(dou)動(dong)的(de)系統,其中,所述觸(chu)發控制(zhi)模塊(kuai)包括數字芯片(pian)。

根(gen)據(ju)本(ben)實用新(xin)型(xing)的第二方面,本(ben)實用新(xin)型(xing)提(ti)供一種數字芯片,包括:

鎖相環,用于(yu)從示波(bo)器待測信號(hao)的隨(sui)路(lu)時鐘(zhong)中(zhong)恢復出系統(tong)時鐘(zhong),并產生一個(ge)頻率(lv)為所述系統(tong)時鐘(zhong)頻率(lv)的K倍(bei)的外觸發時鐘(zhong);

外(wai)(wai)觸發(fa)脈沖生成(cheng)單(dan)元,用于接收外(wai)(wai)部輸入的外(wai)(wai)觸發(fa)信號(hao),根據所述外(wai)(wai)觸發(fa)信號(hao)和(he)外(wai)(wai)觸發(fa)時鐘生成(cheng)外(wai)(wai)觸發(fa)脈沖信號(hao)以控制波形采集;

時(shi)(shi)間(jian)片檢(jian)測(ce)單(dan)元,用于(yu)根據所(suo)述外觸發(fa)時(shi)(shi)鐘將系統時(shi)(shi)鐘周期分為K個時(shi)(shi)間(jian)片,并檢(jian)測(ce)出所(suo)述外觸發(fa)脈沖信號的(de)發(fa)生(sheng)時(shi)(shi)間(jian)所(suo)處的(de)時(shi)(shi)間(jian)片;

擴(kuo)展(zhan)(zhan)脈沖(chong)寬(kuan)(kuan)度統(tong)計單元,用于(yu)接收(shou)線性展(zhan)(zhan)寬(kuan)(kuan)后(hou)的(de)外觸發(fa)脈沖(chong)信(xin)號,并統(tong)計線性展(zhan)(zhan)寬(kuan)(kuan)后(hou)的(de)外觸發(fa)脈沖(chong)信(xin)號的(de)寬(kuan)(kuan)度,結(jie)合(he)外觸發(fa)脈沖(chong)信(xin)號所處的(de)時間片(pian)得到觸發(fa)校正(zheng)值,以對采集波(bo)形進行位置(zhi)校正(zheng);

所述鎖相環的外觸(chu)發(fa)時鐘輸出(chu)端連接外觸(chu)發(fa)脈沖(chong)生成單(dan)元(yuan)(yuan)、時間片檢(jian)測單(dan)元(yuan)(yuan)和擴(kuo)展(zhan)脈沖(chong)寬度(du)統計單(dan)元(yuan)(yuan);所述外觸(chu)發(fa)脈沖(chong)生成單(dan)元(yuan)(yuan)通過時間片檢(jian)測單(dan)元(yuan)(yuan)連接擴(kuo)展(zhan)脈沖(chong)寬度(du)統計單(dan)元(yuan)(yuan)。

所述(shu)的數(shu)字芯(xin)(xin)片(pian),其中,所述(shu)數(shu)字芯(xin)(xin)片(pian)還包括:

ADC接口;

降采(cai)樣及存(cun)儲模塊,用(yong)于對ADC接口(kou)輸出的并行數據流進行降采(cai)樣和/或(huo)存(cun)儲;

ADC接(jie)口(kou)的輸(shu)出端連接(jie)降采(cai)樣及(ji)存(cun)(cun)儲(chu)模塊,所述降采(cai)樣及(ji)存(cun)(cun)儲(chu)模塊還連接(jie)鎖(suo)相環的系統時鐘輸(shu)出端。

根據本(ben)實用新型的第(di)三(san)方面(mian),本(ben)實用新型提(ti)供一(yi)種示波器(qi),包(bao)括如(ru)上(shang)所(suo)述(shu)的降低示波器(qi)外觸發波形抖動的系統,或者(zhe),包(bao)括如(ru)上(shang)所(suo)述(shu)的數(shu)字芯片。

本(ben)(ben)實用新型的(de)(de)(de)(de)(de)有益(yi)效果:本(ben)(ben)實用新型選擇外(wai)(wai)(wai)(wai)(wai)觸(chu)發(fa)(fa)通(tong)(tong)道進行觸(chu)發(fa)(fa)時(shi)(shi),通(tong)(tong)過(guo)比(bi)(bi)較(jiao)模(mo)塊將外(wai)(wai)(wai)(wai)(wai)觸(chu)發(fa)(fa)通(tong)(tong)道輸出(chu)的(de)(de)(de)(de)(de)信號(hao)(hao)與比(bi)(bi)較(jiao)電平(ping)比(bi)(bi)較(jiao),將外(wai)(wai)(wai)(wai)(wai)觸(chu)發(fa)(fa)通(tong)(tong)道輸出(chu)的(de)(de)(de)(de)(de)信號(hao)(hao)轉換為(wei)(wei)高(gao)低電平(ping)的(de)(de)(de)(de)(de)外(wai)(wai)(wai)(wai)(wai)觸(chu)發(fa)(fa)信號(hao)(hao);由觸(chu)發(fa)(fa)控制模(mo)塊產生一(yi)個頻率(lv)(lv)為(wei)(wei)系(xi)(xi)統時(shi)(shi)鐘(zhong)頻率(lv)(lv)的(de)(de)(de)(de)(de)K倍的(de)(de)(de)(de)(de)外(wai)(wai)(wai)(wai)(wai)觸(chu)發(fa)(fa)時(shi)(shi)鐘(zhong);根據所述外(wai)(wai)(wai)(wai)(wai)觸(chu)發(fa)(fa)時(shi)(shi)鐘(zhong)和外(wai)(wai)(wai)(wai)(wai)觸(chu)發(fa)(fa)信號(hao)(hao),生成外(wai)(wai)(wai)(wai)(wai)觸(chu)發(fa)(fa)脈(mo)沖(chong)信號(hao)(hao);K大于1。由于外(wai)(wai)(wai)(wai)(wai)觸(chu)發(fa)(fa)時(shi)(shi)鐘(zhong)的(de)(de)(de)(de)(de)頻率(lv)(lv)比(bi)(bi)系(xi)(xi)統時(shi)(shi)鐘(zhong)頻率(lv)(lv)高(gao),使得(de)示波(bo)器采樣率(lv)(lv)變(bian)高(gao),降(jiang)低了波(bo)形(xing)的(de)(de)(de)(de)(de)抖動,提高(gao)了波(bo)形(xing)采集(ji)的(de)(de)(de)(de)(de)穩定性。

附圖說明

圖1為本實用新型提供的降低示波器(qi)外觸發(fa)波形(xing)抖(dou)動的系統的結構框圖;

圖2為(wei)本(ben)實(shi)用(yong)新型提供的降低(di)示(shi)波(bo)(bo)器外(wai)(wai)觸(chu)發(fa)波(bo)(bo)形(xing)抖動(dong)的系(xi)統中,系(xi)統時(shi)鐘(zhong)、外(wai)(wai)觸(chu)發(fa)時(shi)鐘(zhong)、外(wai)(wai)觸(chu)發(fa)信(xin)號(hao)以及(ji)展寬后(hou)的外(wai)(wai)觸(chu)發(fa)信(xin)號(hao)的波(bo)(bo)形(xing)示(shi)意圖;

圖(tu)3為本(ben)實用新型提供的數字芯(xin)片的結構框(kuang)圖(tu)。

具體實施方式

下面通(tong)過具(ju)體(ti)實施方(fang)式(shi)結合(he)附圖對(dui)本實用新型作(zuo)進一(yi)步(bu)詳細說明。

在本實用新型實施例中,通過提供一(yi)種示波(bo)器(qi)(qi),其包括(kuo)降低(di)示波(bo)器(qi)(qi)外觸(chu)(chu)發(fa)(fa)(fa)波(bo)形抖動(dong)(dong)的(de)(de)(de)系統(tong),所述系統(tong)通過數字芯片(pian)內部的(de)(de)(de)鎖(suo)相環多產(chan)生一(yi)個外觸(chu)(chu)發(fa)(fa)(fa)時(shi)(shi)鐘(zhong)(zhong)Fe,該(gai)(gai)外觸(chu)(chu)發(fa)(fa)(fa)時(shi)(shi)鐘(zhong)(zhong)Fe的(de)(de)(de)頻率為系統(tong)時(shi)(shi)鐘(zhong)(zhong)的(de)(de)(de)K倍,K大于(yu)1,采用該(gai)(gai)外觸(chu)(chu)發(fa)(fa)(fa)時(shi)(shi)鐘(zhong)(zhong)Fe來(lai)產(chan)生外觸(chu)(chu)發(fa)(fa)(fa)脈沖(chong)信(xin)號及擴(kuo)展脈沖(chong)寬度的(de)(de)(de)統(tong)計,并記錄外觸(chu)(chu)發(fa)(fa)(fa)脈沖(chong)信(xin)號所在系統(tong)時(shi)(shi)鐘(zhong)(zhong)周期的(de)(de)(de)時(shi)(shi)間片(pian)位置,將二者結合起來(lai),得到觸(chu)(chu)發(fa)(fa)(fa)校(xiao)(xiao)正(zheng)(zheng)值。等(deng)待該(gai)(gai)幀數據采集(ji)完畢(bi)之后,利用觸(chu)(chu)發(fa)(fa)(fa)校(xiao)(xiao)正(zheng)(zheng)值對采集(ji)波(bo)形進行位置校(xiao)(xiao)正(zheng)(zheng),最后顯示在屏幕(mu)上(shang)。由于(yu)外觸(chu)(chu)發(fa)(fa)(fa)時(shi)(shi)鐘(zhong)(zhong)的(de)(de)(de)頻率比系統(tong)時(shi)(shi)鐘(zhong)(zhong)頻率高(gao),使(shi)得示波(bo)器(qi)(qi)采樣(yang)率變高(gao),降低(di)了波(bo)形的(de)(de)(de)抖動(dong)(dong),提高(gao)了波(bo)形采集(ji)的(de)(de)(de)穩定(ding)性。

請參考圖(tu)1,本實用新型(xing)提(ti)供(gong)的(de)降低示波器外(wai)(wai)觸(chu)(chu)發(fa)波形(xing)抖動的(de)系統,包括:外(wai)(wai)觸(chu)(chu)發(fa)通(tong)道、模(mo)(mo)擬(ni)通(tong)道、外(wai)(wai)觸(chu)(chu)發(fa)通(tong)道放(fang)大耦合電路(lu)(lu)10、比較模(mo)(mo)塊20、觸(chu)(chu)發(fa)控制(zhi)模(mo)(mo)塊40、外(wai)(wai)觸(chu)(chu)發(fa)脈(mo)沖(chong)擴展(zhan)電路(lu)(lu)30、波形(xing)通(tong)道放(fang)大及(ji)耦合電路(lu)(lu)50和(he)模(mo)(mo)數(shu)轉(zhuan)換(huan)器60。外(wai)(wai)觸(chu)(chu)發(fa)通(tong)道和(he)模(mo)(mo)擬(ni)通(tong)道均用于接收待測信號。

比較(jiao)模塊20,用于將外觸發(fa)(fa)通道輸出(chu)的信號(hao)與比較(jiao)電(dian)平(ping)比較(jiao),將外觸發(fa)(fa)通道輸出(chu)的信號(hao)轉換為高(gao)低(di)電(dian)平(ping)的外觸發(fa)(fa)信號(hao)。

觸發控制模塊40,用于(yu)(yu)產生(sheng)一個頻(pin)率為系統時(shi)鐘(zhong)(zhong)Fs頻(pin)率的K倍的外觸發時(shi)鐘(zhong)(zhong)Fe;根據所述外觸發時(shi)鐘(zhong)(zhong)和(he)外觸發信(xin)號,生(sheng)成(cheng)外觸發脈沖信(xin)號;K大(da)于(yu)(yu)1;優選的,K為大(da)于(yu)(yu)1的正整數。

外觸(chu)發(fa)通道的輸出端通過比較模(mo)塊20連接觸(chu)發(fa)控制模(mo)塊40。

由于(yu)外觸發時鐘Fe的(de)頻率(lv)比系統時鐘Fs的(de)頻率(lv)高(gao),使得示波器采樣率(lv)變高(gao),降低了(le)波形(xing)的(de)抖動,提(ti)高(gao)了(le)波形(xing)采集的(de)穩定性(xing)。

外觸發(fa)通道放大(da)(da)耦合(he)電路10串接在(zai)外觸發(fa)通道和比較(jiao)模塊20之間,用(yong)(yong)于對外觸發(fa)通道輸(shu)出的信號(hao)進行(xing)增益控制及(ji)交(jiao)流、直流耦合(he),即用(yong)(yong)于對示波器外觸發(fa)通道輸(shu)出的信號(hao)進行(xing)放大(da)(da)和耦合(he)。

外(wai)觸(chu)發脈(mo)沖擴(kuo)展(zhan)(zhan)電(dian)(dian)路30與觸(chu)發控(kong)制模塊40連(lian)接(jie),用(yong)于對外(wai)觸(chu)發脈(mo)沖信(xin)號進(jin)行(xing)線(xian)性(xing)(xing)展(zhan)(zhan)寬(線(xian)性(xing)(xing)放大),還用(yong)于在啟動外(wai)觸(chu)發之前(qian),先進(jin)行(xing)外(wai)觸(chu)發脈(mo)沖擴(kuo)展(zhan)(zhan)電(dian)(dian)路線(xian)性(xing)(xing)放大區(qu)(qu)域(yu)校正(zheng),確保觸(chu)發控(kong)制模塊40所產生的(de)分布范圍(0~T/K)的(de)脈(mo)沖在外(wai)觸(chu)發脈(mo)沖擴(kuo)展(zhan)(zhan)電(dian)(dian)路30的(de)線(xian)性(xing)(xing)放大區(qu)(qu)域(yu)內(nei)。

波(bo)形通道(dao)放(fang)大及耦(ou)合電路50,用(yong)于對模(mo)擬通道(dao)輸出的(de)信(xin)號(hao)進(jin)(jin)行增益控(kong)制及交流、直(zhi)流耦(ou)合;即用(yong)于對示波(bo)器模(mo)擬通道(dao)輸出的(de)信(xin)號(hao)進(jin)(jin)行放(fang)大和(he)耦(ou)合。

模數轉換器(qi)(ADC)60,用(yong)于(yu)實現模擬(ni)信號采樣量化功能,即,將模擬(ni)波形(xing)信號轉換為數字(zi)波形(xing)信號。

模(mo)擬通道的(de)(de)輸(shu)出端(duan)通過波形通道放大(da)及耦合電(dian)路50連(lian)接模(mo)數轉換(huan)器60的(de)(de)輸(shu)入端(duan),模(mo)數轉換(huan)器60的(de)(de)輸(shu)出端(duan)連(lian)接觸(chu)發控制模(mo)塊40。

進一步(bu)的,觸(chu)發(fa)控(kong)制模塊40包括數字(zi)(zi)芯片,本實(shi)施例(li)中,觸(chu)發(fa)控(kong)制模塊40為數字(zi)(zi)芯片。觸(chu)發(fa)控(kong)制模塊40包括:

鎖相(xiang)環430,用(yong)于實現時(shi)(shi)鐘(zhong)(zhong)(zhong)分頻及(ji)倍頻功能(neng),具體的,從待測(ce)信(xin)號的隨(sui)路時(shi)(shi)鐘(zhong)(zhong)(zhong)中恢復出系(xi)(xi)統時(shi)(shi)鐘(zhong)(zhong)(zhong)Fs,并(bing)產生(sheng)(sheng)一個(ge)頻率為所述系(xi)(xi)統時(shi)(shi)鐘(zhong)(zhong)(zhong)頻率的K倍的外(wai)觸(chu)發(fa)時(shi)(shi)鐘(zhong)(zhong)(zhong)Fe。相(xiang)比現有技術,鎖相(xiang)環430多產生(sheng)(sheng)一個(ge)外(wai)觸(chu)發(fa)時(shi)(shi)鐘(zhong)(zhong)(zhong)Fe,假(jia)設(she)系(xi)(xi)統時(shi)(shi)鐘(zhong)(zhong)(zhong)的周期為T,則外(wai)觸(chu)發(fa)時(shi)(shi)鐘(zhong)(zhong)(zhong)Fe的周期為T/K,便(bian)于外(wai)觸(chu)發(fa)脈(mo)沖(chong)(chong)(chong)生(sheng)(sheng)成單元440采用(yong)該(gai)時(shi)(shi)鐘(zhong)(zhong)(zhong)來產生(sheng)(sheng)外(wai)觸(chu)發(fa)脈(mo)沖(chong)(chong)(chong)信(xin)號,以及(ji)擴展(zhan)脈(mo)沖(chong)(chong)(chong)寬度統計單元460對擴展(zhan)脈(mo)沖(chong)(chong)(chong)寬度的統計。

外觸發脈沖生(sheng)成(cheng)單元440,用于(yu)根據所述外觸發時(shi)鐘Fe和外觸發信號(hao),生(sheng)成(cheng)外觸發脈沖信號(hao)以控(kong)制(zhi)波形采集。

時(shi)(shi)間(jian)片(pian)(pian)檢(jian)測單(dan)元450,用于根據(ju)所(suo)述外(wai)(wai)觸(chu)(chu)發(fa)時(shi)(shi)鐘(zhong)Fe將系統時(shi)(shi)鐘(zhong)周期分為K個(ge)(ge)時(shi)(shi)間(jian)片(pian)(pian),即每個(ge)(ge)外(wai)(wai)觸(chu)(chu)發(fa)時(shi)(shi)鐘(zhong)周期為1個(ge)(ge)時(shi)(shi)間(jian)片(pian)(pian),并檢(jian)測出所(suo)述外(wai)(wai)觸(chu)(chu)發(fa)脈(mo)沖信號(hao)的發(fa)生時(shi)(shi)間(jian)所(suo)處(chu)的時(shi)(shi)間(jian)片(pian)(pian)。時(shi)(shi)間(jian)片(pian)(pian)檢(jian)測單(dan)元450通(tong)過(guo)檢(jian)測記錄外(wai)(wai)觸(chu)(chu)發(fa)脈(mo)沖信號(hao)位于哪一個(ge)(ge)時(shi)(shi)間(jian)片(pian)(pian),并將記錄的時(shi)(shi)間(jian)片(pian)(pian)信息(xi)送給后(hou)面的擴展脈(mo)沖寬度統計單(dan)元460做進一步的處(chu)理。

擴展脈(mo)(mo)沖(chong)(chong)寬度統計(ji)單元460,用于統計(ji)線性展寬后(hou)的外觸發脈(mo)(mo)沖(chong)(chong)信號的寬度,并(bing)將其轉換到觸發位置上去(qu),即結合外觸發脈(mo)(mo)沖(chong)(chong)信號所處的時間片得到觸發校(xiao)(xiao)正值(zhi),以對采集波形進行(xing)位置校(xiao)(xiao)正。

鎖(suo)相環(huan)430的(de)(de)(de)(de)外觸(chu)發(fa)(fa)(fa)時(shi)(shi)鐘輸(shu)(shu)(shu)出端(duan)(duan)(duan)(duan)連(lian)接外觸(chu)發(fa)(fa)(fa)脈(mo)(mo)沖(chong)(chong)(chong)(chong)生(sheng)成(cheng)單(dan)(dan)元(yuan)(yuan)(yuan)(yuan)440的(de)(de)(de)(de)第(di)一輸(shu)(shu)(shu)入端(duan)(duan)(duan)(duan)、時(shi)(shi)間片檢(jian)測(ce)單(dan)(dan)元(yuan)(yuan)(yuan)(yuan)450的(de)(de)(de)(de)第(di)一輸(shu)(shu)(shu)入端(duan)(duan)(duan)(duan)和(he)擴展脈(mo)(mo)沖(chong)(chong)(chong)(chong)寬(kuan)度(du)(du)統(tong)計單(dan)(dan)元(yuan)(yuan)(yuan)(yuan)460的(de)(de)(de)(de)第(di)一輸(shu)(shu)(shu)入端(duan)(duan)(duan)(duan);外觸(chu)發(fa)(fa)(fa)脈(mo)(mo)沖(chong)(chong)(chong)(chong)生(sheng)成(cheng)單(dan)(dan)元(yuan)(yuan)(yuan)(yuan)440的(de)(de)(de)(de)第(di)二(er)(er)輸(shu)(shu)(shu)入端(duan)(duan)(duan)(duan)連(lian)接比較模塊20的(de)(de)(de)(de)輸(shu)(shu)(shu)出端(duan)(duan)(duan)(duan),外觸(chu)發(fa)(fa)(fa)脈(mo)(mo)沖(chong)(chong)(chong)(chong)生(sheng)成(cheng)單(dan)(dan)元(yuan)(yuan)(yuan)(yuan)440的(de)(de)(de)(de)輸(shu)(shu)(shu)出端(duan)(duan)(duan)(duan)連(lian)接外觸(chu)發(fa)(fa)(fa)脈(mo)(mo)沖(chong)(chong)(chong)(chong)擴展電路30的(de)(de)(de)(de)輸(shu)(shu)(shu)入端(duan)(duan)(duan)(duan)和(he)時(shi)(shi)間片檢(jian)測(ce)單(dan)(dan)元(yuan)(yuan)(yuan)(yuan)450的(de)(de)(de)(de)第(di)二(er)(er)輸(shu)(shu)(shu)入端(duan)(duan)(duan)(duan),時(shi)(shi)間片檢(jian)測(ce)單(dan)(dan)元(yuan)(yuan)(yuan)(yuan)450的(de)(de)(de)(de)輸(shu)(shu)(shu)出端(duan)(duan)(duan)(duan)連(lian)接擴展脈(mo)(mo)沖(chong)(chong)(chong)(chong)寬(kuan)度(du)(du)統(tong)計單(dan)(dan)元(yuan)(yuan)(yuan)(yuan)460的(de)(de)(de)(de)第(di)二(er)(er)輸(shu)(shu)(shu)入端(duan)(duan)(duan)(duan),外觸(chu)發(fa)(fa)(fa)脈(mo)(mo)沖(chong)(chong)(chong)(chong)擴展電路30的(de)(de)(de)(de)輸(shu)(shu)(shu)出端(duan)(duan)(duan)(duan)連(lian)接擴展脈(mo)(mo)沖(chong)(chong)(chong)(chong)寬(kuan)度(du)(du)統(tong)計單(dan)(dan)元(yuan)(yuan)(yuan)(yuan)460的(de)(de)(de)(de)第(di)三輸(shu)(shu)(shu)入端(duan)(duan)(duan)(duan)。

ADC接口410,接收來自模數轉(zhuan)(zhuan)換器的高速串行(xing)數據(ju)(ju)流并轉(zhuan)(zhuan)換為低速的并行(xing)數據(ju)(ju)流。

降采(cai)樣及存(cun)(cun)儲(chu)模塊420,用于實現示(shi)波器的各種采(cai)樣率功能及數(shu)據(ju)存(cun)(cun)儲(chu)功能,即,對ADC接口410輸(shu)出(chu)的并行(xing)數(shu)據(ju)流進行(xing)降采(cai)樣和/或存(cun)(cun)儲(chu)。

ADC接(jie)口410的輸入(ru)端(duan)和鎖相環430的輸入(ru)端(duan)均連接(jie)模(mo)數轉換器(qi)60的輸出(chu)(chu)端(duan),ADC接(jie)口410的輸出(chu)(chu)端(duan)連接(jie)降采樣(yang)及存儲模(mo)塊420,降采樣(yang)及存儲模(mo)塊420還連接(jie)鎖相環430的系統時鐘(zhong)輸出(chu)(chu)端(duan)。

本實用新(xin)(xin)型中,觸(chu)(chu)發(fa)(fa)控制模(mo)塊40將系統時(shi)鐘周期(qi)分為(wei)K個(ge)(ge)(ge)時(shi)間片,即每個(ge)(ge)(ge)外(wai)觸(chu)(chu)發(fa)(fa)時(shi)鐘周期(qi)為(wei)1個(ge)(ge)(ge)時(shi)間片,每個(ge)(ge)(ge)時(shi)間片對應的(de)(de)并行數據的(de)(de)個(ge)(ge)(ge)數為(wei)Mnew=Fc×T÷K。與現有技術相比,本實用新(xin)(xin)型采(cai)用外(wai)觸(chu)(chu)發(fa)(fa)時(shi)鐘Fe來產(chan)生外(wai)觸(chu)(chu)發(fa)(fa)脈沖(chong)(chong)信號,可知(zhi)脈沖(chong)(chong)的(de)(de)分布范(fan)圍為(wei)0&lt;TRO<T÷K。假定外(wai)觸(chu)(chu)發(fa)(fa)脈沖(chong)(chong)擴展電路(lu)30線性擴展的(de)(de)倍數為(wei)N,則本實用新(xin)(xin)型的(de)(de)擴展電路(lu)的(de)(de)分辨率Rnew(每個(ge)(ge)(ge)脈沖(chong)(chong)統計周期(qi)所能表示(shi)的(de)(de)采(cai)樣點的(de)(de)數目(mu))為(wei):

Rnew=(Mnew)÷N=Fc×T÷K÷N=(Fc×T)÷(K×N);

對比(bi)背景技(ji)(ji)術中的(de)(de)(de)R及本實用(yong)新型的(de)(de)(de)Rnew表達式可知,在本實用(yong)新型中,每個脈沖統(tong)(tong)計周期(qi)所(suo)表示的(de)(de)(de)采樣點的(de)(de)(de)數目變為原來的(de)(de)(de)1/K,與(yu)現有技(ji)(ji)術方案比(bi),分辨率提高了K倍(bei),將大大的(de)(de)(de)降(jiang)低波(bo)形(xing)的(de)(de)(de)抖動。同時(shi)將外觸發脈沖發生的(de)(de)(de)時(shi)間片X傳(chuan)遞(di)給(gei)后續的(de)(de)(de)擴(kuo)展脈沖寬度(du)統(tong)(tong)計單(dan)元460,由其解析出(chu)觸發沿位于系(xi)統(tong)(tong)時(shi)鐘周期(qi)的(de)(de)(de)具體位置。

請(qing)一并參閱圖2,本實(shi)用新型提供的(de)系統(tong)(tong)在(zai)(zai)啟(qi)動(dong)外(wai)(wai)觸(chu)(chu)(chu)(chu)發(fa)(fa)之前,先要(yao)(yao)進(jin)(jin)行(xing)外(wai)(wai)觸(chu)(chu)(chu)(chu)發(fa)(fa)脈(mo)(mo)(mo)(mo)(mo)(mo)沖(chong)(chong)(chong)擴展電(dian)路30線性放大區域(yu)校(xiao)(xiao)正(zheng),確保(bao)外(wai)(wai)觸(chu)(chu)(chu)(chu)發(fa)(fa)脈(mo)(mo)(mo)(mo)(mo)(mo)沖(chong)(chong)(chong)生(sheng)(sheng)成單(dan)元(yuan)440所(suo)產生(sheng)(sheng)的(de)分布(bu)范圍(0~T/K)的(de)脈(mo)(mo)(mo)(mo)(mo)(mo)沖(chong)(chong)(chong)在(zai)(zai)外(wai)(wai)觸(chu)(chu)(chu)(chu)發(fa)(fa)脈(mo)(mo)(mo)(mo)(mo)(mo)沖(chong)(chong)(chong)擴展電(dian)路30的(de)線性放大區域(yu)內。而后(hou)根(gen)據示波(bo)器波(bo)形采(cai)集流程,啟(qi)動(dong)波(bo)形采(cai)集,當預(yu)觸(chu)(chu)(chu)(chu)發(fa)(fa)位置(zhi)滿(man)足后(hou),等待滿(man)足設置(zhi)條件(jian)的(de)外(wai)(wai)觸(chu)(chu)(chu)(chu)發(fa)(fa)信(xin)(xin)(xin)號(hao)(hao)(hao)TR,外(wai)(wai)觸(chu)(chu)(chu)(chu)發(fa)(fa)脈(mo)(mo)(mo)(mo)(mo)(mo)沖(chong)(chong)(chong)生(sheng)(sheng)成單(dan)元(yuan)440將(jiang)外(wai)(wai)觸(chu)(chu)(chu)(chu)發(fa)(fa)信(xin)(xin)(xin)號(hao)(hao)(hao)TR進(jin)(jin)行(xing)延(yan)遲(chi)(chi)(chi)變為TRD,然后(hou)將(jiang)TR與上TRD的(de)低(di)電(dian)平,產生(sheng)(sheng)外(wai)(wai)觸(chu)(chu)(chu)(chu)發(fa)(fa)脈(mo)(mo)(mo)(mo)(mo)(mo)沖(chong)(chong)(chong)信(xin)(xin)(xin)號(hao)(hao)(hao)TRO。進(jin)(jin)而外(wai)(wai)觸(chu)(chu)(chu)(chu)發(fa)(fa)脈(mo)(mo)(mo)(mo)(mo)(mo)沖(chong)(chong)(chong)擴展電(dian)路30對外(wai)(wai)觸(chu)(chu)(chu)(chu)發(fa)(fa)脈(mo)(mo)(mo)(mo)(mo)(mo)沖(chong)(chong)(chong)信(xin)(xin)(xin)號(hao)(hao)(hao)TRO進(jin)(jin)行(xing)線性展寬(kuan),并由擴展脈(mo)(mo)(mo)(mo)(mo)(mo)沖(chong)(chong)(chong)寬(kuan)度(du)(du)統(tong)(tong)計(ji)(ji)單(dan)元(yuan)460進(jin)(jin)行(xing)擴展脈(mo)(mo)(mo)(mo)(mo)(mo)沖(chong)(chong)(chong)寬(kuan)度(du)(du)的(de)統(tong)(tong)計(ji)(ji),同時(shi)記(ji)錄(lu)外(wai)(wai)觸(chu)(chu)(chu)(chu)發(fa)(fa)脈(mo)(mo)(mo)(mo)(mo)(mo)沖(chong)(chong)(chong)所(suo)在(zai)(zai)系統(tong)(tong)時(shi)鐘(zhong)(zhong)(zhong)周(zhou)(zhou)期的(de)時(shi)間(jian)片位置(zhi),將(jiang)二者結合(he)起(qi)來,得到觸(chu)(chu)(chu)(chu)發(fa)(fa)校(xiao)(xiao)正(zheng)值。等待該幀數據采(cai)集完畢之后(hou),利用觸(chu)(chu)(chu)(chu)發(fa)(fa)校(xiao)(xiao)正(zheng)值對采(cai)集波(bo)形進(jin)(jin)行(xing)位置(zhi)校(xiao)(xiao)正(zheng),最后(hou)顯示在(zai)(zai)屏幕上。外(wai)(wai)觸(chu)(chu)(chu)(chu)發(fa)(fa)脈(mo)(mo)(mo)(mo)(mo)(mo)沖(chong)(chong)(chong)生(sheng)(sheng)成單(dan)元(yuan)440將(jiang)外(wai)(wai)觸(chu)(chu)(chu)(chu)發(fa)(fa)信(xin)(xin)(xin)號(hao)(hao)(hao)TR進(jin)(jin)行(xing)延(yan)遲(chi)(chi)(chi)的(de)延(yan)遲(chi)(chi)(chi)時(shi)間(jian)可以(yi)是一個或多個外(wai)(wai)觸(chu)(chu)(chu)(chu)發(fa)(fa)時(shi)鐘(zhong)(zhong)(zhong)周(zhou)(zhou)期,根(gen)據需(xu)要(yao)(yao)進(jin)(jin)行(xing)設置(zhi),在(zai)(zai)后(hou)續再計(ji)(ji)算(suan)外(wai)(wai)觸(chu)(chu)(chu)(chu)發(fa)(fa)脈(mo)(mo)(mo)(mo)(mo)(mo)沖(chong)(chong)(chong)真正(zheng)的(de)位置(zhi)時(shi)需(xu)要(yao)(yao)將(jiang)多余的(de)延(yan)遲(chi)(chi)(chi)時(shi)鐘(zhong)(zhong)(zhong)減去,得到外(wai)(wai)觸(chu)(chu)(chu)(chu)發(fa)(fa)脈(mo)(mo)(mo)(mo)(mo)(mo)沖(chong)(chong)(chong)所(suo)在(zai)(zai)系統(tong)(tong)時(shi)鐘(zhong)(zhong)(zhong)周(zhou)(zhou)期的(de)時(shi)間(jian)片位置(zhi)。

由此可知(zhi),本實(shi)用新型采用頻率(lv)為(wei)F(F=K/T,T代表(biao)系(xi)統時(shi)鐘(zhong)周期)產(chan)生(sheng)外觸(chu)發(fa)(fa)脈(mo)沖信號(hao),同時(shi)將(jiang)外觸(chu)發(fa)(fa)脈(mo)沖信號(hao)所發(fa)(fa)生(sheng)的(de)(de)(de)(de)時(shi)間(jian)與其在一個系(xi)統時(shi)鐘(zhong)周期中的(de)(de)(de)(de)時(shi)間(jian)片的(de)(de)(de)(de)位置(zhi)結(jie)合起(qi)來,得到(dao)更(geng)高分(fen)辨率(lv)的(de)(de)(de)(de)觸(chu)發(fa)(fa)校正結(jie)果(guo)。

在本實(shi)用新型的第二實(shi)施例(li)中,本實(shi)用新型提供(gong)一(yi)種(zhong)數字(zi)芯片,請參閱圖(tu)3,數字(zi)芯片包括:

鎖相環430,用(yong)于從(cong)示波器待(dai)測信號(hao)的(de)隨(sui)路時(shi)鐘(zhong)中恢復出系統時(shi)鐘(zhong),并產生(sheng)一(yi)個頻率為所述(shu)系統時(shi)鐘(zhong)頻率的(de)K倍的(de)外觸發時(shi)鐘(zhong)。

外(wai)觸(chu)(chu)發(fa)(fa)脈沖生成(cheng)單元440,用于接收外(wai)部輸入(ru)的外(wai)觸(chu)(chu)發(fa)(fa)信號,根據所述(shu)外(wai)觸(chu)(chu)發(fa)(fa)信號和外(wai)觸(chu)(chu)發(fa)(fa)時鐘生成(cheng)外(wai)觸(chu)(chu)發(fa)(fa)脈沖信號以控制波形(xing)采(cai)集。

時(shi)間片檢測單元450,用于根(gen)據(ju)所(suo)述(shu)外(wai)觸發時(shi)鐘將系(xi)統時(shi)鐘周期(qi)分為K個時(shi)間片,并檢測出所(suo)述(shu)外(wai)觸發脈沖(chong)信(xin)號的發生時(shi)間所(suo)處的時(shi)間片。

擴展(zhan)脈(mo)(mo)沖(chong)寬(kuan)度(du)統(tong)計(ji)單(dan)元(yuan)460,用于接(jie)收線性展(zhan)寬(kuan)后的外(wai)(wai)觸(chu)發(fa)脈(mo)(mo)沖(chong)信號,并統(tong)計(ji)線性展(zhan)寬(kuan)后的外(wai)(wai)觸(chu)發(fa)脈(mo)(mo)沖(chong)信號的寬(kuan)度(du),結合外(wai)(wai)觸(chu)發(fa)脈(mo)(mo)沖(chong)信號所處(chu)的時間片得到觸(chu)發(fa)校正值(zhi),以對采集波形(xing)進行位置(zhi)校正。

ADC接口410,用于接收來自模數轉換器的高速串行(xing)數據(ju)流(liu)并轉換為低速的并行(xing)數據(ju)流(liu)。

降采(cai)樣(yang)(yang)及存(cun)儲模塊(kuai)420,用(yong)于對ADC接口輸出的并(bing)行數(shu)據流(liu)進行降采(cai)樣(yang)(yang)和/或存(cun)儲。

所(suo)述鎖(suo)相環(huan)430的外觸發(fa)時(shi)鐘輸出端連接(jie)外觸發(fa)脈(mo)沖(chong)(chong)(chong)生成單元(yuan)440、時(shi)間(jian)片(pian)檢(jian)(jian)測(ce)單元(yuan)450和擴展脈(mo)沖(chong)(chong)(chong)寬度統計單元(yuan)460;所(suo)述外觸發(fa)脈(mo)沖(chong)(chong)(chong)生成單元(yuan)440通過時(shi)間(jian)片(pian)檢(jian)(jian)測(ce)單元(yuan)450連接(jie)擴展脈(mo)沖(chong)(chong)(chong)寬度統計單元(yuan)460。

ADC接口410的輸(shu)出端(duan)(duan)連接降(jiang)采樣(yang)及(ji)存儲模(mo)塊420,降(jiang)采樣(yang)及(ji)存儲模(mo)塊420還連接鎖(suo)相(xiang)環430的系統(tong)時鐘(zhong)輸(shu)出端(duan)(duan)。

由(you)于本實施例中的數(shu)字(zi)芯片在(zai)上一(yi)實施例中已詳細(xi)闡(chan)述,在(zai)此不再贅述。

以(yi)上(shang)應(ying)用(yong)(yong)(yong)(yong)了具體個例對本實用(yong)(yong)(yong)(yong)新(xin)型(xing)進行(xing)闡(chan)述(shu),只是用(yong)(yong)(yong)(yong)于幫助(zhu)理解本實用(yong)(yong)(yong)(yong)新(xin)型(xing),并不用(yong)(yong)(yong)(yong)以(yi)限(xian)制本實用(yong)(yong)(yong)(yong)新(xin)型(xing)。對于本實用(yong)(yong)(yong)(yong)新(xin)型(xing)所屬技術領域的技術人員,依據本實用(yong)(yong)(yong)(yong)新(xin)型(xing)的思想,還可以(yi)做出(chu)若干簡單推演、變(bian)形或替換。

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