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一種抗干擾電路、攝像機及攝像機的抗干擾方法與流程

文檔序號:11110923閱讀(du):651來(lai)源:國(guo)知(zhi)局
一種抗干擾電路、攝像機及攝像機的抗干擾方法與制造工藝

本發明涉(she)及(ji)視頻領域,尤其涉(she)及(ji)一種抗干(gan)擾電路(lu)、攝像機及(ji)攝像機的抗干(gan)擾方(fang)法。



背景技術:

在(zai)模(mo)(mo)(mo)(mo)(mo)擬(ni)(ni)視(shi)(shi)頻系統方(fang)案中(zhong),為(wei)了(le)(le)布線(xian)(xian)方(fang)便(bian)和(he)降(jiang)低成本,一(yi)(yi)般(ban)會采用專用的供電設備來給多(duo)臺(tai)(tai)(tai)(tai)模(mo)(mo)(mo)(mo)(mo)擬(ni)(ni)攝(she)(she)像(xiang)(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)同時供電,這樣多(duo)臺(tai)(tai)(tai)(tai)模(mo)(mo)(mo)(mo)(mo)擬(ni)(ni)攝(she)(she)像(xiang)(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)一(yi)(yi)般(ban)也會同時接到一(yi)(yi)臺(tai)(tai)(tai)(tai)硬(ying)盤錄(lu)像(xiang)(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)上面,使得模(mo)(mo)(mo)(mo)(mo)擬(ni)(ni)攝(she)(she)像(xiang)(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)之間存在(zai)回流(liu)干擾,進而(er)影響圖(tu)像(xiang)(xiang)(xiang)(xiang)質量。具體(ti)如圖(tu)1所示,以兩臺(tai)(tai)(tai)(tai)模(mo)(mo)(mo)(mo)(mo)擬(ni)(ni)攝(she)(she)像(xiang)(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)為(wei)例,第(di)(di)一(yi)(yi)模(mo)(mo)(mo)(mo)(mo)擬(ni)(ni)攝(she)(she)像(xiang)(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)1和(he)第(di)(di)二(er)(er)模(mo)(mo)(mo)(mo)(mo)擬(ni)(ni)攝(she)(she)像(xiang)(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)2發送模(mo)(mo)(mo)(mo)(mo)擬(ni)(ni)視(shi)(shi)頻信(xin)(xin)號經(jing)過(guo)線(xian)(xian)纜(lan)傳輸到硬(ying)盤錄(lu)像(xiang)(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)3,信(xin)(xin)號從(cong)地(di)(di)線(xian)(xian)GND回流(liu),其中(zhong)虛線(xian)(xian)為(wei)第(di)(di)一(yi)(yi)模(mo)(mo)(mo)(mo)(mo)擬(ni)(ni)攝(she)(she)像(xiang)(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)1的一(yi)(yi)條(tiao)電源電流(liu)回流(liu)路徑,由于該回流(liu)路徑經(jing)過(guo)第(di)(di)二(er)(er)模(mo)(mo)(mo)(mo)(mo)擬(ni)(ni)攝(she)(she)像(xiang)(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)2的視(shi)(shi)頻地(di)(di),會導(dao)致第(di)(di)二(er)(er)模(mo)(mo)(mo)(mo)(mo)擬(ni)(ni)攝(she)(she)像(xiang)(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)2的視(shi)(shi)頻信(xin)(xin)號的參考地(di)(di)平面波(bo)動,從(cong)而(er)導(dao)致了(le)(le)第(di)(di)二(er)(er)模(mo)(mo)(mo)(mo)(mo)擬(ni)(ni)攝(she)(she)像(xiang)(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)2的圖(tu)像(xiang)(xiang)(xiang)(xiang)上有(you)條(tiao)紋。同樣道理,第(di)(di)二(er)(er)模(mo)(mo)(mo)(mo)(mo)擬(ni)(ni)攝(she)(she)像(xiang)(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)2也會干擾到第(di)(di)一(yi)(yi)模(mo)(mo)(mo)(mo)(mo)擬(ni)(ni)攝(she)(she)像(xiang)(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)1的視(shi)(shi)頻信(xin)(xin)號,從(cong)而(er)導(dao)致第(di)(di)一(yi)(yi)模(mo)(mo)(mo)(mo)(mo)擬(ni)(ni)攝(she)(she)像(xiang)(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)1圖(tu)像(xiang)(xiang)(xiang)(xiang)上也有(you)干擾條(tiao)紋。

為了解決上(shang)述問題,目前的(de)(de)解決方(fang)案,一(yi)種是(shi)(shi)在第二模(mo)擬(ni)攝像(xiang)(xiang)機2與供電設備4之間增(zeng)加(jia)電源隔離(li)器(qi)(qi)來(lai)阻(zu)斷(duan)回(hui)流路(lu)徑或(huo)者增(zeng)加(jia)扼(e)流圈增(zeng)大回(hui)流路(lu)徑的(de)(de)阻(zu)抗(kang),另(ling)一(yi)種是(shi)(shi)在第二模(mo)擬(ni)攝像(xiang)(xiang)機2與硬盤錄像(xiang)(xiang)機3之間增(zeng)加(jia)視頻(pin)隔離(li)器(qi)(qi)來(lai)增(zeng)大回(hui)流路(lu)徑上(shang)的(de)(de)阻(zu)抗(kang)。但(dan)是(shi)(shi)現有的(de)(de)使(shi)用電源隔離(li)器(qi)(qi)的(de)(de)方(fang)案會有成本較(jiao)高的(de)(de)問題;使(shi)用扼(e)流圈和視頻(pin)隔離(li)器(qi)(qi)的(de)(de)方(fang)案只是(shi)(shi)增(zeng)大回(hui)流路(lu)徑上(shang)的(de)(de)阻(zu)抗(kang),只能(neng)在一(yi)定程度上(shang)減輕(qing)干擾,不能(neng)完全消(xiao)除(chu)。



技術實現要素:

有(you)鑒于此,本發(fa)明(ming)實施例提供一(yi)種抗干(gan)擾(rao)電路、攝(she)像機及(ji)攝(she)像機的抗干(gan)擾(rao)方法(fa),用以(yi)解決(jue)現有(you)的抗干(gan)擾(rao)方式(shi)存在(zai)的成(cheng)本高及(ji)不(bu)能從源頭上解決(jue)回流干(gan)擾(rao)的問題。

因此,本發明實施例(li)提供的一種抗干(gan)擾(rao)電路,所述抗干(gan)擾(rao)電路應用(yong)于攝像機中,所述抗干(gan)擾(rao)電路包括:第(di)一電壓采集模(mo)塊(kuai),第(di)二電壓采集模(mo)塊(kuai),參考(kao)電壓模(mo)塊(kuai),誤差放大模(mo)塊(kuai)和可調負載;其中,

所(suo)述第一電(dian)(dian)壓(ya)(ya)采集模塊用于將所(suo)述攝像(xiang)機(ji)的電(dian)(dian)源(yuan)入口端的電(dian)(dian)壓(ya)(ya)經過分壓(ya)(ya)后提供給所(suo)述攝像(xiang)機(ji)的主控制(zhi)器,以通過所(suo)述主控制(zhi)器讀取所(suo)述第一電(dian)(dian)壓(ya)(ya)采集模塊輸出(chu)的電(dian)(dian)壓(ya)(ya)值(zhi);

所(suo)述(shu)第二電(dian)壓采集模(mo)塊(kuai)(kuai)用于將所(suo)述(shu)攝(she)像機(ji)的(de)電(dian)源入(ru)口端(duan)的(de)電(dian)壓經(jing)過分壓后提供給所(suo)述(shu)誤差放大模(mo)塊(kuai)(kuai)的(de)第一輸入(ru)端(duan);

所(suo)述(shu)參考電(dian)(dian)壓(ya)模(mo)塊用于(yu)向所(suo)述(shu)誤差放大模(mo)塊的第(di)二(er)輸(shu)入端提供參考電(dian)(dian)壓(ya),且所(suo)述(shu)參考電(dian)(dian)壓(ya)的大小等(deng)于(yu)所(suo)述(shu)攝像機的電(dian)(dian)源入口端電(dian)(dian)壓(ya)為最小值時所(suo)述(shu)第(di)二(er)電(dian)(dian)壓(ya)采集模(mo)塊輸(shu)出的電(dian)(dian)壓(ya);

所述(shu)(shu)誤差放大(da)(da)模(mo)塊用(yong)于(yu)根據其第一(yi)輸入(ru)端(duan)(duan)和(he)第二輸入(ru)端(duan)(duan)的電(dian)(dian)壓(ya)(ya)對所述(shu)(shu)可調負(fu)載(zai)進(jin)行控制(zhi),當所述(shu)(shu)誤差放大(da)(da)模(mo)塊第一(yi)輸入(ru)端(duan)(duan)的電(dian)(dian)壓(ya)(ya)大(da)(da)于(yu)第二輸入(ru)端(duan)(duan)的電(dian)(dian)壓(ya)(ya)時,增(zeng)大(da)(da)所述(shu)(shu)可調負(fu)載(zai)的負(fu)載(zai)值(zhi),以(yi)降低(di)所述(shu)(shu)攝(she)像機的電(dian)(dian)源入(ru)口端(duan)(duan)的電(dian)(dian)壓(ya)(ya),直(zhi)到所述(shu)(shu)攝(she)像機的電(dian)(dian)源入(ru)口端(duan)(duan)的電(dian)(dian)壓(ya)(ya)為最小值(zhi)時的電(dian)(dian)壓(ya)(ya)。

較佳地,在本(ben)發(fa)明實施例(li)提供的上(shang)述(shu)抗干擾電(dian)路中,所述(shu)參(can)考電(dian)壓(ya)模(mo)塊具體用于(yu)將所述(shu)主(zhu)控(kong)(kong)制器(qi)輸出(chu)的脈寬調制信(xin)號轉換為(wei)直(zhi)流電(dian)壓(ya)信(xin)號反饋給所述(shu)攝像機(ji)的主(zhu)控(kong)(kong)制器(qi),以通過所述(shu)主(zhu)控(kong)(kong)制器(qi)控(kong)(kong)制所述(shu)參(can)考電(dian)壓(ya)模(mo)塊輸出(chu)參(can)考電(dian)壓(ya)。

較(jiao)佳(jia)地,在本發明實施例提供的(de)上(shang)述(shu)抗干擾電路中(zhong),所述(shu)參考電壓模塊包括第(di)一(yi)電阻和電容(rong);其中(zhong),

所(suo)(suo)述(shu)第(di)(di)一(yi)電(dian)(dian)阻(zu)的(de)第(di)(di)一(yi)端(duan)和所(suo)(suo)述(shu)電(dian)(dian)容的(de)第(di)(di)一(yi)端(duan)均與(yu)所(suo)(suo)述(shu)誤差放大模(mo)塊的(de)第(di)(di)二輸入端(duan)以及(ji)所(suo)(suo)述(shu)主控制(zhi)器的(de)第(di)(di)一(yi)模(mo)數轉換管腳相連,所(suo)(suo)述(shu)第(di)(di)一(yi)電(dian)(dian)阻(zu)的(de)第(di)(di)二端(duan)與(yu)所(suo)(suo)述(shu)主控制(zhi)器的(de)脈(mo)寬調制(zhi)管腳相連,所(suo)(suo)述(shu)電(dian)(dian)容的(de)第(di)(di)二端(duan)接地(di)。

較佳地(di),在本發明實施例提供的上述抗干(gan)擾(rao)電路中(zhong),所述誤差(cha)放大(da)模(mo)塊包括誤差(cha)放大(da)器(qi);其中(zhong),

所述誤(wu)(wu)(wu)差(cha)(cha)放(fang)大(da)(da)器(qi)的(de)正(zheng)向輸入端為(wei)(wei)所述誤(wu)(wu)(wu)差(cha)(cha)放(fang)大(da)(da)模(mo)塊的(de)第一輸入端,所述誤(wu)(wu)(wu)差(cha)(cha)放(fang)大(da)(da)器(qi)的(de)負向輸入端為(wei)(wei)所述誤(wu)(wu)(wu)差(cha)(cha)放(fang)大(da)(da)模(mo)塊的(de)第二輸入端,所述誤(wu)(wu)(wu)差(cha)(cha)放(fang)大(da)(da)器(qi)的(de)輸出(chu)端為(wei)(wei)所述誤(wu)(wu)(wu)差(cha)(cha)放(fang)大(da)(da)模(mo)塊的(de)輸出(chu)端;所述誤(wu)(wu)(wu)差(cha)(cha)放(fang)大(da)(da)器(qi)的(de)使能控(kong)制端用于(yu)接收控(kong)制信號;其中,

所述控(kong)制信號用于(yu)當所述參考電(dian)壓模塊輸出(chu)參考電(dian)壓時控(kong)制所述誤差(cha)放大器開啟。

較佳(jia)地,在本發明實施(shi)例提供(gong)的(de)上(shang)述抗干擾電路中(zhong),所(suo)(suo)述誤差放大(da)器的(de)使能控制端與(yu)所(suo)(suo)述主控制器相(xiang)連。

較佳地,在(zai)本發明實施(shi)例提(ti)供的(de)上(shang)述(shu)抗干擾電路中(zhong),所述(shu)可(ke)調負載包括場效應(ying)管(guan);其(qi)中(zhong),

所(suo)述(shu)場效(xiao)應管的(de)柵極與所(suo)述(shu)誤差放大模(mo)塊的(de)輸出端相連,所(suo)述(shu)場效(xiao)應管的(de)漏極與所(suo)述(shu)攝像(xiang)機的(de)電源入口端相連,所(suo)述(shu)場效(xiao)應管的(de)源極接地(di)。

較(jiao)佳地,在本發(fa)明(ming)實施例提供的上述抗干擾電(dian)路中(zhong),所述第一電(dian)壓采集模(mo)塊(kuai)包括:第二(er)電(dian)阻(zu)和(he)第三電(dian)阻(zu);其中(zhong),

所(suo)述(shu)第(di)二(er)電阻的(de)(de)第(di)一端(duan)與(yu)所(suo)述(shu)攝像機的(de)(de)電源入口端(duan)相連,所(suo)述(shu)第(di)二(er)電阻的(de)(de)第(di)二(er)端(duan)分別(bie)與(yu)所(suo)述(shu)第(di)三電阻的(de)(de)第(di)一端(duan)和所(suo)述(shu)主(zhu)控制器的(de)(de)第(di)二(er)模(mo)數(shu)轉換(huan)管(guan)腳相連,所(suo)述(shu)第(di)三電阻的(de)(de)第(di)二(er)端(duan)接地(di)。

較佳地,在本發(fa)明實施(shi)例提供的(de)上述抗干(gan)擾電(dian)(dian)路中,所(suo)述第二電(dian)(dian)壓采集模塊包(bao)括:第四(si)電(dian)(dian)阻(zu)和第五電(dian)(dian)阻(zu);其中,

所(suo)述(shu)(shu)(shu)第四電(dian)阻(zu)(zu)的(de)第一端與(yu)所(suo)述(shu)(shu)(shu)攝像(xiang)機的(de)電(dian)源入口端相(xiang)連(lian)(lian),所(suo)述(shu)(shu)(shu)第四電(dian)阻(zu)(zu)的(de)第二端分別與(yu)所(suo)述(shu)(shu)(shu)第五電(dian)阻(zu)(zu)的(de)第一端和所(suo)述(shu)(shu)(shu)誤(wu)差放大(da)模塊的(de)第一輸入端相(xiang)連(lian)(lian),所(suo)述(shu)(shu)(shu)第五電(dian)阻(zu)(zu)的(de)第二端接地。

相(xiang)應(ying)地,本發(fa)明實施(shi)例還提供(gong)了一種攝像機,包括主控(kong)制器和本發(fa)明實施(shi)例提供(gong)的上述(shu)任(ren)一項所述(shu)的抗干擾(rao)電路。

相應地,本發(fa)明實施例還提供了一(yi)種攝像機的抗干(gan)擾方法,包括:

所(suo)述主(zhu)控(kong)制器讀取(qu)所(suo)述抗(kang)干擾電路的第一電壓采(cai)集模塊輸出的電壓值;

當所(suo)(suo)(suo)述(shu)電(dian)壓值的(de)(de)(de)波動(dong)超出預設(she)范圍(wei)時(shi),所(suo)(suo)(suo)述(shu)主控制器(qi)根據至少一(yi)幀時(shi)間中所(suo)(suo)(suo)述(shu)電(dian)壓值的(de)(de)(de)變(bian)化確定所(suo)(suo)(suo)述(shu)攝像機(ji)的(de)(de)(de)電(dian)源(yuan)入口端的(de)(de)(de)電(dian)壓的(de)(de)(de)最小值;

所(suo)(suo)述(shu)主控制(zhi)器(qi)根據確定的(de)所(suo)(suo)述(shu)攝像機(ji)的(de)電(dian)源入(ru)口端(duan)的(de)電(dian)壓(ya)(ya)的(de)最(zui)小(xiao)值以及所(suo)(suo)述(shu)抗(kang)干擾電(dian)路的(de)第二電(dian)壓(ya)(ya)采集模塊來(lai)確定參考電(dian)壓(ya)(ya)值;

所述(shu)(shu)主控(kong)制(zhi)器控(kong)制(zhi)所述(shu)(shu)抗(kang)干(gan)(gan)擾(rao)電(dian)(dian)路的參考(kao)電(dian)(dian)壓(ya)(ya)模塊輸出參考(kao)電(dian)(dian)壓(ya)(ya),并控(kong)制(zhi)所述(shu)(shu)抗(kang)干(gan)(gan)擾(rao)電(dian)(dian)路的誤差放大(da)模塊接收所述(shu)(shu)參考(kao)電(dian)(dian)壓(ya)(ya);

所(suo)述(shu)(shu)抗干(gan)擾電路的(de)(de)誤差放大模塊根據其(qi)第一(yi)(yi)輸(shu)入端(duan)和第二輸(shu)入端(duan)的(de)(de)電壓(ya)對所(suo)述(shu)(shu)抗干(gan)擾電路的(de)(de)可(ke)調負(fu)載進行控制,當所(suo)述(shu)(shu)誤差放大模塊第一(yi)(yi)輸(shu)入端(duan)的(de)(de)電壓(ya)大于第二輸(shu)入端(duan)的(de)(de)電壓(ya)時,增大所(suo)述(shu)(shu)可(ke)調負(fu)載的(de)(de)負(fu)載值,以降(jiang)低所(suo)述(shu)(shu)攝像機的(de)(de)電源(yuan)入口(kou)端(duan)的(de)(de)電壓(ya),直到所(suo)述(shu)(shu)攝像機的(de)(de)電源(yuan)入口(kou)端(duan)的(de)(de)電壓(ya)為最小(xiao)值時的(de)(de)電壓(ya)。

本(ben)(ben)發明實(shi)施(shi)例提(ti)供(gong)的(de)(de)(de)(de)(de)(de)抗(kang)(kang)干(gan)擾(rao)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)、攝像(xiang)機(ji)及攝像(xiang)機(ji)的(de)(de)(de)(de)(de)(de)抗(kang)(kang)干(gan)擾(rao)方法,抗(kang)(kang)干(gan)擾(rao)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)包括(kuo):第一電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)采集(ji)模塊(kuai)(kuai),第二電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)采集(ji)模塊(kuai)(kuai),參考(kao)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)模塊(kuai)(kuai),誤差放(fang)大模塊(kuai)(kuai)和可調(diao)負(fu)載。該(gai)抗(kang)(kang)干(gan)擾(rao)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)中,通過主(zhu)控制(zhi)器讀取第一電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)采集(ji)模塊(kuai)(kuai)輸出(chu)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)值(zhi)來確定(ding)攝像(xiang)機(ji)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)入(ru)(ru)(ru)(ru)口端(duan)(duan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)為(wei)最小值(zhi)時(shi)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya),從而確定(ding)參考(kao)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)值(zhi),通過根據誤差放(fang)大模塊(kuai)(kuai)的(de)(de)(de)(de)(de)(de)第一輸入(ru)(ru)(ru)(ru)端(duan)(duan)和第二輸入(ru)(ru)(ru)(ru)端(duan)(duan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)值(zhi)來調(diao)節可調(diao)負(fu)載的(de)(de)(de)(de)(de)(de)值(zhi),直(zhi)到(dao)攝像(xiang)機(ji)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)入(ru)(ru)(ru)(ru)口端(duan)(duan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)為(wei)最小值(zhi)時(shi)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。本(ben)(ben)發明實(shi)施(shi)例提(ti)供(gong)的(de)(de)(de)(de)(de)(de)抗(kang)(kang)干(gan)擾(rao)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)通過利用主(zhu)控制(zhi)器對(dui)(dui)攝像(xiang)機(ji)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)入(ru)(ru)(ru)(ru)口端(duan)(duan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)進行(xing)監控,利用誤差放(fang)大模塊(kuai)(kuai)對(dui)(dui)其第一輸入(ru)(ru)(ru)(ru)端(duan)(duan)和第二輸入(ru)(ru)(ru)(ru)端(duan)(duan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)差值(zhi)進行(xing)放(fang)大,從而通過可調(diao)負(fu)載對(dui)(dui)攝像(xiang)機(ji)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)入(ru)(ru)(ru)(ru)口端(duan)(duan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)進行(xing)調(diao)節,直(zhi)到(dao)攝像(xiang)機(ji)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)入(ru)(ru)(ru)(ru)口端(duan)(duan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)為(wei)最小值(zhi)時(shi)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya),進而使(shi)攝像(xiang)機(ji)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)入(ru)(ru)(ru)(ru)口端(duan)(duan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)保持在一個(ge)恒定(ding)值(zhi)。因此與現有的(de)(de)(de)(de)(de)(de)抗(kang)(kang)干(gan)擾(rao)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)相比,本(ben)(ben)發明提(ti)供(gong)的(de)(de)(de)(de)(de)(de)抗(kang)(kang)干(gan)擾(rao)電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)(lu)可以從源(yuan)頭上解決(jue)回流干(gan)擾(rao)及成(cheng)本(ben)(ben)較高的(de)(de)(de)(de)(de)(de)問題。

附圖說明

圖(tu)1為現有的(de)抗干擾電路的(de)結構示意圖(tu);

圖2為本發明實施例提(ti)供的抗(kang)干擾電(dian)路的結(jie)構(gou)示意圖之一;

圖3為本發明實施例提供的抗(kang)干擾電(dian)路的結構示意圖之二;

圖4為本發明實施例提供的攝像(xiang)機的抗干擾方法的流(liu)程圖。

具體實施方式

下(xia)面結合附圖,對本發明(ming)實施例(li)提供的(de)抗干擾(rao)電路、攝(she)像機(ji)及攝(she)像機(ji)的(de)抗干擾(rao)方法(fa)的(de)具體實施方式進行詳細地說明(ming)。

附圖中(zhong)各結構的(de)大小和形(xing)狀不(bu)反映上述抗干(gan)擾(rao)電路(lu)的(de)真(zhen)實比例(li),目的(de)只是示意說明本發明內(nei)容。

本發(fa)明(ming)實(shi)施例提(ti)供的一種抗(kang)干(gan)擾電(dian)路(lu),該抗(kang)干(gan)擾電(dian)路(lu)應用(yong)于攝像(xiang)機中,如(ru)圖2所示,抗(kang)干(gan)擾電(dian)路(lu)包括:第一電(dian)壓采(cai)(cai)集模塊01,第二電(dian)壓采(cai)(cai)集模塊02,參考電(dian)壓模塊03,誤差放大模塊04和(he)可調負載05;其中,

第一電(dian)壓采(cai)集模塊01用于將攝像機(ji)(ji)(圖中未示出(chu))的電(dian)源(yuan)入口端Vin的電(dian)壓經過分(fen)壓后提供給攝像機(ji)(ji)的主控(kong)制(zhi)器(qi)06,以通過主控(kong)制(zhi)器(qi)06讀取第一電(dian)壓采(cai)集模塊01輸出(chu)的電(dian)壓值(zhi);

第(di)二電壓(ya)采集模塊(kuai)02用于將(jiang)攝像(xiang)機的電源入口端Vin的電壓(ya)經過分壓(ya)后提供(gong)給誤差放大模塊(kuai)04的第(di)一輸入端;

參(can)考(kao)電(dian)(dian)壓模(mo)(mo)塊03用(yong)于向(xiang)誤(wu)差放大模(mo)(mo)塊04的第(di)二(er)輸入端提供參(can)考(kao)電(dian)(dian)壓,且參(can)考(kao)電(dian)(dian)壓的大小(xiao)等于攝像機的電(dian)(dian)源(yuan)入口端Vin電(dian)(dian)壓為最小(xiao)值時第(di)二(er)電(dian)(dian)壓采集(ji)模(mo)(mo)塊02輸出(chu)的電(dian)(dian)壓;

誤差放大模塊(kuai)04用于根據其第(di)一輸(shu)入端(duan)(duan)(duan)和(he)第(di)二(er)輸(shu)入端(duan)(duan)(duan)的(de)(de)電(dian)壓(ya)對可調負(fu)(fu)載(zai)05進行控(kong)制(zhi),當誤差放大模塊(kuai)04第(di)一輸(shu)入端(duan)(duan)(duan)的(de)(de)電(dian)壓(ya)大于第(di)二(er)輸(shu)入端(duan)(duan)(duan)的(de)(de)電(dian)壓(ya)時,增大可調負(fu)(fu)載(zai)05的(de)(de)負(fu)(fu)載(zai)值(zhi)(zhi),以(yi)降(jiang)低攝像機(ji)的(de)(de)電(dian)源入口(kou)端(duan)(duan)(duan)Vin的(de)(de)電(dian)壓(ya),直到攝像機(ji)的(de)(de)電(dian)源入口(kou)端(duan)(duan)(duan)Vin的(de)(de)電(dian)壓(ya)為(wei)最小值(zhi)(zhi)時的(de)(de)電(dian)壓(ya)。

本發明實施例提供的(de)(de)(de)(de)(de)抗(kang)(kang)干(gan)(gan)擾(rao)(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)、攝(she)像(xiang)機(ji)(ji)及(ji)攝(she)像(xiang)機(ji)(ji)的(de)(de)(de)(de)(de)抗(kang)(kang)干(gan)(gan)擾(rao)(rao)(rao)方法(fa),抗(kang)(kang)干(gan)(gan)擾(rao)(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)包括:第(di)一(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)采集(ji)模(mo)塊(kuai),第(di)二電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)采集(ji)模(mo)塊(kuai),參考電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)模(mo)塊(kuai),誤(wu)差(cha)(cha)放大(da)(da)模(mo)塊(kuai)和(he)可調(diao)負(fu)(fu)載。該(gai)抗(kang)(kang)干(gan)(gan)擾(rao)(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)中,通過(guo)主控制器(qi)讀取第(di)一(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)采集(ji)模(mo)塊(kuai)輸出(chu)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)值(zhi)來確定(ding)攝(she)像(xiang)機(ji)(ji)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)入(ru)口(kou)(kou)(kou)(kou)端(duan)(duan)(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)為(wei)最小值(zhi)時(shi)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya),從而確定(ding)參考電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)值(zhi),通過(guo)根據誤(wu)差(cha)(cha)放大(da)(da)模(mo)塊(kuai)的(de)(de)(de)(de)(de)第(di)一(yi)輸入(ru)端(duan)(duan)(duan)和(he)第(di)二輸入(ru)端(duan)(duan)(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)值(zhi)來調(diao)節(jie)可調(diao)負(fu)(fu)載的(de)(de)(de)(de)(de)值(zhi),直到攝(she)像(xiang)機(ji)(ji)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)入(ru)口(kou)(kou)(kou)(kou)端(duan)(duan)(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)為(wei)最小值(zhi)時(shi)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)。本發明實施例提供的(de)(de)(de)(de)(de)抗(kang)(kang)干(gan)(gan)擾(rao)(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)通過(guo)利(li)用主控制器(qi)對(dui)攝(she)像(xiang)機(ji)(ji)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)入(ru)口(kou)(kou)(kou)(kou)端(duan)(duan)(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)進行(xing)(xing)監控,利(li)用誤(wu)差(cha)(cha)放大(da)(da)模(mo)塊(kuai)對(dui)其第(di)一(yi)輸入(ru)端(duan)(duan)(duan)和(he)第(di)二輸入(ru)端(duan)(duan)(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)差(cha)(cha)值(zhi)進行(xing)(xing)放大(da)(da),從而通過(guo)可調(diao)負(fu)(fu)載對(dui)攝(she)像(xiang)機(ji)(ji)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)入(ru)口(kou)(kou)(kou)(kou)端(duan)(duan)(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)進行(xing)(xing)調(diao)節(jie),直到攝(she)像(xiang)機(ji)(ji)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)入(ru)口(kou)(kou)(kou)(kou)端(duan)(duan)(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)為(wei)最小值(zhi)時(shi)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya),進而使(shi)攝(she)像(xiang)機(ji)(ji)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)入(ru)口(kou)(kou)(kou)(kou)端(duan)(duan)(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)保持在(zai)一(yi)個恒定(ding)值(zhi)。因此與現有的(de)(de)(de)(de)(de)抗(kang)(kang)干(gan)(gan)擾(rao)(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)相比(bi),本發明提供的(de)(de)(de)(de)(de)抗(kang)(kang)干(gan)(gan)擾(rao)(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)可以(yi)從源(yuan)(yuan)頭上解決回流干(gan)(gan)擾(rao)(rao)(rao)及(ji)成本較高的(de)(de)(de)(de)(de)問題。

具(ju)體(ti)實施時,在本發明實施例(li)提供的抗干擾電路(lu)中,抗干擾電路(lu)既可以設(she)置(zhi)在攝像機電源入(ru)口(kou)端,也可以設(she)置(zhi)在攝像機內部,在此(ci)不作限定。

較佳(jia)地,具體實施時,在(zai)本發明實施例提供的上(shang)述抗干擾電路中,抗干擾電路是以(yi)設置(zhi)在(zai)攝像機電源(yuan)入口端為例進行(xing)說(shuo)明的。

具體(ti)實(shi)施(shi)時,在本發(fa)明實(shi)施(shi)例提供的(de)抗干擾電(dian)路中,參(can)(can)考(kao)電(dian)壓(ya)(ya)模塊具體(ti)用(yong)于將主(zhu)控制器輸(shu)出的(de)脈寬調制信(xin)號轉換為(wei)直流電(dian)壓(ya)(ya)信(xin)號反饋(kui)給攝像機的(de)主(zhu)控制器,以(yi)通過(guo)主(zhu)控制器控制參(can)(can)考(kao)電(dian)壓(ya)(ya)模塊輸(shu)出參(can)(can)考(kao)電(dian)壓(ya)(ya)。

具體實施時,在本發明實施例提供的抗干擾電路中,如圖3所示,參考電壓模塊03包括第一電阻R1和電容C;其中,

第一電阻R1的第一端和電容C的第一端均與誤差放大模塊04的第二輸入端以及主控制器06的第一模數轉換管腳ADC1相連,第一電阻R1的(de)(de)第(di)二端與主(zhu)控制器06的(de)(de)脈(mo)寬(kuan)調制管腳PWM相連,電容(rong)C的(de)(de)第(di)二端接地。

具(ju)體實施時,在(zai)本發(fa)明(ming)實施例提供的(de)抗干擾電路中(zhong),如圖3所示,誤(wu)差放大(da)模(mo)塊(kuai)04包括(kuo)誤(wu)差放大(da)器U;其(qi)中(zhong),

誤(wu)(wu)差(cha)(cha)放大(da)器U的(de)(de)正向輸入(ru)(ru)端(duan)VIN+為誤(wu)(wu)差(cha)(cha)放大(da)模(mo)(mo)塊04的(de)(de)第(di)一(yi)輸入(ru)(ru)端(duan),誤(wu)(wu)差(cha)(cha)放大(da)器U的(de)(de)負向輸入(ru)(ru)端(duan)VIN-為誤(wu)(wu)差(cha)(cha)放大(da)模(mo)(mo)塊04的(de)(de)第(di)二輸入(ru)(ru)端(duan),誤(wu)(wu)差(cha)(cha)放大(da)器U的(de)(de)輸出(chu)端(duan)為誤(wu)(wu)差(cha)(cha)放大(da)模(mo)(mo)塊04的(de)(de)輸出(chu)端(duan)OUT;誤(wu)(wu)差(cha)(cha)放大(da)器U的(de)(de)使能控制端(duan)EN用于(yu)接收(shou)控制信號(hao);其(qi)中,

控制信(xin)號用于當參(can)考電壓模塊(kuai)03輸出參(can)考電壓時控制誤差放(fang)大器(qi)U開啟。

具體實(shi)施(shi)時,在本發(fa)明實(shi)施(shi)例提供的抗干(gan)擾電路中,如(ru)圖3所示,誤差放(fang)大(da)器U的使能控制(zhi)端(duan)EN與主控制(zhi)器06相連。

具體實施時,在本發明實施例(li)提(ti)供的抗干擾電(dian)路中(zhong),如圖3所示,可(ke)調負載05包括(kuo)場效應管(guan)M;其中(zhong),

場(chang)效應(ying)(ying)管M的柵(zha)極G與誤差放大(da)模塊04的輸出端OUT相連,場(chang)效應(ying)(ying)管M的漏極D與攝像(xiang)機(ji)的電源(yuan)入(ru)口端Vin相連,場(chang)效應(ying)(ying)管M的源(yuan)極S接地。

具體實施時,在本發明實施例提供的抗干擾電路中,如圖3所示,第一電壓采集模塊01包括:第二電阻R2和第三電阻R3;其中,

第二電阻R2的第一端與攝像機的電源入口端Vin相連,第二電阻R2的第二端分別與第三電阻R3的第一端和主控制器06的第二模數轉換管腳ADC2相連,第三電阻R3的第二端接地。

具體實施時,在本發明實施例提供的抗干擾電路中,如圖3所示,第二電壓采集模塊02包括:第四電阻R4和第五電阻R5;其中,

第四電阻R4的第一端與攝像機的電源入口端Vin相連,第四電阻R4的第二端分別與第五電阻R5的第一端和誤差放大模塊04的第一輸入端相連,第五電阻R5的第二端接地。

下面通過一個具體的(de)實施(shi)(shi)例對本發明(ming)(ming)實施(shi)(shi)例提供的(de)上述抗干擾電路的(de)原理進(jin)行詳細(xi)說明(ming)(ming)。

具體實施時,在本發明實施例提供的抗干擾電路中,如圖3所示,集中供電電源(圖中未示出)給攝像機(圖中未示出)供電,攝像機開始工作,攝像機的主控制器06讀取抗干擾電路的第一電壓采集模塊01輸出的電壓值Vadc2,根據分壓原理,Vadc2=Vin*R3/(R2+R3),判斷電壓值Vadc2與預設范圍是否有較大變化;當電壓值Vadc2的波動超出預設范圍時,主控制器06根據至少一幀時間中電壓值Vadc2的變化確定攝像機的電源入口端Vin的電壓的最小值Vmin;主控制器06根據確定的攝像機的電源入口端Vin的電壓的最小值Vmin以及抗干擾電路的第二電壓采集模塊02來確定參考電壓值Vref=Vmin*R5/(R4+R5);主控制器06控制抗干擾電路的參考電壓模塊03輸出參考電壓,并控制抗干擾電路的誤差放大模塊04接收參考電壓;進入誤差放大模塊04的第一輸入端的電壓為Vin*R5/(R4+R5);抗干擾電路的誤差放大模塊04根據其第一輸入端和第二輸入端的電壓對抗干擾電路的可調負載05進行控制,當誤差放大模塊04第一輸入端的電壓Vin*R5/(R4+R5)大于參考電壓Vref時,誤差放大器U的輸出端OUT輸出大于0的信號,場效應管M的柵極G與源極S兩端的電壓大于0,則場效應管M的漏極D與源極S兩端的阻抗減小,漏極D與源極S兩端的電流增大,則供電電源與攝像機之間線纜上的電流增大,由于線纜有阻抗,因此進入攝像機的電源入口端Vin的電壓會減小,因此此時通過增大可調負載05的負載值,以降低攝像機的電源入口端Vin的電壓,直到攝像機的電源入口端Vin的電壓為最小值時的電壓Vmin,即直到Vin*R5/(R4+R5)=Vref,從而使攝像機的電(dian)源入口端的電(dian)壓保持在一個恒定值。

基于同一(yi)發明(ming)構(gou)思,本發明(ming)實(shi)施例還提供了一(yi)種(zhong)(zhong)攝(she)像機(ji),包括主控制器和抗(kang)干(gan)擾(rao)(rao)電(dian)路(lu),抗(kang)干(gan)擾(rao)(rao)電(dian)路(lu)為(wei)本發明(ming)實(shi)施例提供的(de)上述任一(yi)種(zhong)(zhong)抗(kang)干(gan)擾(rao)(rao)電(dian)路(lu)。由于該(gai)攝(she)像機(ji)解(jie)決問題的(de)原理與前(qian)述一(yi)種(zhong)(zhong)抗(kang)干(gan)擾(rao)(rao)電(dian)路(lu)相似,因此(ci)該(gai)攝(she)像機(ji)的(de)實(shi)施可以參(can)見前(qian)述抗(kang)干(gan)擾(rao)(rao)電(dian)路(lu)的(de)實(shi)施,重復之處不再贅述。

基于同一發明構(gou)思,本發明實施例還提供(gong)了一種上述攝(she)像機的(de)抗(kang)干(gan)擾方法,如圖所示(shi)4,具(ju)體(ti)可以(yi)包括以(yi)下步(bu)驟:

S401、主(zhu)控制器讀(du)取(qu)抗干(gan)擾電路(lu)的第一電壓采集模塊(kuai)輸出(chu)的電壓值;

S402、當電(dian)壓(ya)(ya)值(zhi)的波(bo)動(dong)超出預設范圍時,主控(kong)制器(qi)根據(ju)至(zhi)少一(yi)幀時間中電(dian)壓(ya)(ya)值(zhi)的變化確定攝像機的電(dian)源入(ru)口端(duan)的電(dian)壓(ya)(ya)的最小值(zhi);

S403、主(zhu)控制器根據確(que)定(ding)的(de)攝像機的(de)電源(yuan)入口端的(de)電壓的(de)最(zui)小值(zhi)(zhi)以及抗干擾電路的(de)第二電壓采集模塊(kuai)來確(que)定(ding)參(can)考(kao)電壓值(zhi)(zhi);

S404、主控制器控制抗干擾(rao)電路(lu)的(de)參考電壓模塊(kuai)(kuai)輸出參考電壓,并控制抗干擾(rao)電路(lu)的(de)誤差放大模塊(kuai)(kuai)接收參考電壓;

S405、抗(kang)干(gan)(gan)擾電路的(de)(de)(de)誤差(cha)放大模(mo)塊根據(ju)其第(di)(di)一(yi)輸(shu)(shu)入(ru)(ru)端(duan)(duan)和第(di)(di)二輸(shu)(shu)入(ru)(ru)端(duan)(duan)的(de)(de)(de)電壓(ya)(ya)對抗(kang)干(gan)(gan)擾電路的(de)(de)(de)可調(diao)負載進(jin)行(xing)控(kong)制,當(dang)誤差(cha)放大模(mo)塊第(di)(di)一(yi)輸(shu)(shu)入(ru)(ru)端(duan)(duan)的(de)(de)(de)電壓(ya)(ya)大于第(di)(di)二輸(shu)(shu)入(ru)(ru)端(duan)(duan)的(de)(de)(de)電壓(ya)(ya)時(shi),增(zeng)大可調(diao)負載的(de)(de)(de)負載值(zhi),以降低攝(she)像機的(de)(de)(de)電源入(ru)(ru)口端(duan)(duan)的(de)(de)(de)電壓(ya)(ya),直到攝(she)像機的(de)(de)(de)電源入(ru)(ru)口端(duan)(duan)的(de)(de)(de)電壓(ya)(ya)為(wei)最小值(zhi)時(shi)的(de)(de)(de)電壓(ya)(ya)。

具(ju)(ju)體(ti)實(shi)施時(shi),在(zai)本發明實(shi)施例提供的(de)(de)(de)(de)(de)抗(kang)干擾(rao)電(dian)(dian)(dian)路中,主(zhu)控(kong)(kong)制(zhi)(zhi)器可(ke)(ke)以實(shi)時(shi)讀取(qu)抗(kang)干擾(rao)電(dian)(dian)(dian)路的(de)(de)(de)(de)(de)第(di)一電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)采集模塊輸出的(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)值(zhi)(zhi)來判斷電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)值(zhi)(zhi)與預設范圍是否有(you)(you)較(jiao)大(da)變(bian)(bian)(bian)化(hua)(hua)(hua),若有(you)(you)較(jiao)大(da)變(bian)(bian)(bian)化(hua)(hua)(hua),主(zhu)控(kong)(kong)制(zhi)(zhi)器根(gen)(gen)據(ju)(ju)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)值(zhi)(zhi)的(de)(de)(de)(de)(de)變(bian)(bian)(bian)化(hua)(hua)(hua)確定(ding)(ding)(ding)攝像(xiang)(xiang)機(ji)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)入(ru)(ru)口(kou)(kou)(kou)端(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)最小值(zhi)(zhi),主(zhu)控(kong)(kong)制(zhi)(zhi)器根(gen)(gen)據(ju)(ju)該電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)最小值(zhi)(zhi)來確定(ding)(ding)(ding)參考電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)值(zhi)(zhi),從(cong)而誤差放大(da)模塊根(gen)(gen)據(ju)(ju)其第(di)一輸入(ru)(ru)端(duan)和第(di)二(er)輸入(ru)(ru)端(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)對(dui)可(ke)(ke)調(diao)負載(zai)進行控(kong)(kong)制(zhi)(zhi),利用可(ke)(ke)調(diao)負載(zai)對(dui)攝像(xiang)(xiang)機(ji)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)入(ru)(ru)口(kou)(kou)(kou)端(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)進行實(shi)時(shi)調(diao)節(jie),直到攝像(xiang)(xiang)機(ji)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)入(ru)(ru)口(kou)(kou)(kou)端(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)為(wei)最小值(zhi)(zhi)時(shi)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya),從(cong)而使攝像(xiang)(xiang)機(ji)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)入(ru)(ru)口(kou)(kou)(kou)端(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)保持(chi)在(zai)一個恒(heng)定(ding)(ding)(ding)值(zhi)(zhi);當然(ran),在(zai)具(ju)(ju)體(ti)實(shi)施時(shi),主(zhu)控(kong)(kong)制(zhi)(zhi)器也可(ke)(ke)以每(mei)隔(ge)一段(duan)時(shi)間讀取(qu)一次來判斷電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)值(zhi)(zhi)與預設范圍是否有(you)(you)較(jiao)大(da)變(bian)(bian)(bian)化(hua)(hua)(hua),若有(you)(you)較(jiao)大(da)變(bian)(bian)(bian)化(hua)(hua)(hua),主(zhu)控(kong)(kong)制(zhi)(zhi)器根(gen)(gen)據(ju)(ju)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)值(zhi)(zhi)的(de)(de)(de)(de)(de)變(bian)(bian)(bian)化(hua)(hua)(hua)確定(ding)(ding)(ding)攝像(xiang)(xiang)機(ji)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)入(ru)(ru)口(kou)(kou)(kou)端(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)最小值(zhi)(zhi),主(zhu)控(kong)(kong)制(zhi)(zhi)器根(gen)(gen)據(ju)(ju)該電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)最小值(zhi)(zhi)來確定(ding)(ding)(ding)參考電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)值(zhi)(zhi),從(cong)而誤差放大(da)模塊根(gen)(gen)據(ju)(ju)其第(di)一輸入(ru)(ru)端(duan)和第(di)二(er)輸入(ru)(ru)端(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)對(dui)可(ke)(ke)調(diao)負載(zai)進行控(kong)(kong)制(zhi)(zhi),利用可(ke)(ke)調(diao)負載(zai)對(dui)攝像(xiang)(xiang)機(ji)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)入(ru)(ru)口(kou)(kou)(kou)端(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)進行調(diao)節(jie),直到攝像(xiang)(xiang)機(ji)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)入(ru)(ru)口(kou)(kou)(kou)端(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)為(wei)最小值(zhi)(zhi)時(shi)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya),從(cong)而使攝像(xiang)(xiang)機(ji)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)入(ru)(ru)口(kou)(kou)(kou)端(duan)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)保持(chi)在(zai)一個恒(heng)定(ding)(ding)(ding)值(zhi)(zhi)。

具體(ti)實施(shi)時,在本發(fa)明(ming)實施(shi)例(li)提供(gong)的抗干擾電路(lu)中,主(zhu)控(kong)制器可以是數(shu)字(zi)信號處理(li)器(Digital Signal Processing,DSP)或影像處理(li)器(Image Signal Processor,ISP),在此不做限定。

本(ben)(ben)發明實(shi)施例提(ti)供的(de)(de)(de)(de)(de)(de)抗(kang)干(gan)(gan)(gan)擾(rao)(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)、攝(she)像(xiang)(xiang)機(ji)(ji)及攝(she)像(xiang)(xiang)機(ji)(ji)的(de)(de)(de)(de)(de)(de)抗(kang)干(gan)(gan)(gan)擾(rao)(rao)(rao)方法,抗(kang)干(gan)(gan)(gan)擾(rao)(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)包(bao)括:第一(yi)(yi)(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)采(cai)集(ji)模(mo)塊(kuai)(kuai),第二電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)采(cai)集(ji)模(mo)塊(kuai)(kuai),參考電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)模(mo)塊(kuai)(kuai),誤(wu)(wu)差放大模(mo)塊(kuai)(kuai)和(he)可(ke)調負(fu)載。該抗(kang)干(gan)(gan)(gan)擾(rao)(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中,通(tong)(tong)過(guo)主(zhu)控制器讀(du)取(qu)第一(yi)(yi)(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)采(cai)集(ji)模(mo)塊(kuai)(kuai)輸出(chu)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)值(zhi)來(lai)確定攝(she)像(xiang)(xiang)機(ji)(ji)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)入(ru)(ru)口端(duan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)為最(zui)(zui)小值(zhi)時(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya),從而(er)確定參考電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)值(zhi),通(tong)(tong)過(guo)根據誤(wu)(wu)差放大模(mo)塊(kuai)(kuai)的(de)(de)(de)(de)(de)(de)第一(yi)(yi)(yi)輸入(ru)(ru)端(duan)和(he)第二輸入(ru)(ru)端(duan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)值(zhi)來(lai)調節(jie)可(ke)調負(fu)載的(de)(de)(de)(de)(de)(de)值(zhi),直(zhi)到(dao)(dao)攝(she)像(xiang)(xiang)機(ji)(ji)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)入(ru)(ru)口端(duan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)為最(zui)(zui)小值(zhi)時(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)。本(ben)(ben)發明實(shi)施例提(ti)供的(de)(de)(de)(de)(de)(de)抗(kang)干(gan)(gan)(gan)擾(rao)(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)通(tong)(tong)過(guo)利(li)用主(zhu)控制器對(dui)攝(she)像(xiang)(xiang)機(ji)(ji)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)入(ru)(ru)口端(duan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)進行(xing)監控,利(li)用誤(wu)(wu)差放大模(mo)塊(kuai)(kuai)對(dui)其第一(yi)(yi)(yi)輸入(ru)(ru)端(duan)和(he)第二輸入(ru)(ru)端(duan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)差值(zhi)進行(xing)放大,從而(er)通(tong)(tong)過(guo)可(ke)調負(fu)載對(dui)攝(she)像(xiang)(xiang)機(ji)(ji)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)入(ru)(ru)口端(duan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)進行(xing)調節(jie),直(zhi)到(dao)(dao)攝(she)像(xiang)(xiang)機(ji)(ji)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)入(ru)(ru)口端(duan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)為最(zui)(zui)小值(zhi)時(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya),進而(er)使攝(she)像(xiang)(xiang)機(ji)(ji)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)入(ru)(ru)口端(duan)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)保持在一(yi)(yi)(yi)個恒定值(zhi)。因此與現有的(de)(de)(de)(de)(de)(de)抗(kang)干(gan)(gan)(gan)擾(rao)(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)相比,本(ben)(ben)發明提(ti)供的(de)(de)(de)(de)(de)(de)抗(kang)干(gan)(gan)(gan)擾(rao)(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)可(ke)以從源(yuan)頭上解決回流干(gan)(gan)(gan)擾(rao)(rao)(rao)及成本(ben)(ben)較高的(de)(de)(de)(de)(de)(de)問題。

顯然,本(ben)領域(yu)的(de)技術(shu)人(ren)員可以對本(ben)發(fa)(fa)(fa)明(ming)進行各(ge)種改動和(he)(he)變型而不(bu)脫離本(ben)發(fa)(fa)(fa)明(ming)的(de)精神(shen)和(he)(he)范圍(wei)。這樣,倘若本(ben)發(fa)(fa)(fa)明(ming)的(de)這些修改和(he)(he)變型屬于(yu)本(ben)發(fa)(fa)(fa)明(ming)權(quan)利(li)要求及其等同技術(shu)的(de)范圍(wei)之(zhi)內,則本(ben)發(fa)(fa)(fa)明(ming)也意圖(tu)包含這些改動和(he)(he)變型在內。

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