本文設計了一種多功能、高效、低(di)功耗、安全的隨身移動電源(yuan)，以(yi)滿足(zu)戶外需求，將有很大(da)的實用價值(zhi)。

　　本文論述的電路系統設計由五部分組成：鋰芯容量指示電路、電芯保護電路、電充電管理路、DC-DC升壓電路和功能擴展電路。
多功能隨身電源的系統設計

　　鋰芯容量指示電路由XC61CC系列的電壓監控芯片組成。電芯保護電路由過充保護、過放保護、過溫保護三部分組成，HAT2027、R5402、自恢復保險絲構建了三重保護，使鋰芯安全性大大增強。充電管理電路采用了CN3066，將充電過程分為涓流充電、恒流充電、恒壓充電和維護充電四個部分，使移動隨身電源能夠最大程度地儲備能量。DC-DC升壓電路采用了MAX1771集成芯片，可將鋰芯容量在安全范圍內最大限度釋放，達到對多種數碼設備供電的目的。功能擴展涵蓋了戶外活動所涉及的常見需求，具有應急夜間高亮照、戶外防盜安全警報、野營驅蚊等功能。多功能隨身電源的電路實現
 

DC-DC升壓電路

　　本系統中(zhong)，DC-DC升壓電(dian)(dian)(dian)路(lu)主要由MAX1771構(gou)成(cheng)，該(gai)控(kong)(kong)制(zhi)(zhi)(zhi)器采(cai)用(yong)獨特的(de)(de)(de)(de)控(kong)(kong)制(zhi)(zhi)(zhi)方案(an)，結合PFM（脈沖(chong)(chong)頻率調(diao)制(zhi)(zhi)(zhi)）及PWM（脈沖(chong)(chong)寬度調(diao)制(zhi)(zhi)(zhi)）的(de)(de)(de)(de)優(you)越(yue)性，提供一個高(gao)效、較(jiao)寬電(dian)(dian)(dian)壓調(diao)節范圍的(de)(de)(de)(de)電(dian)(dian)(dian)源。前(qian)者(zhe)具有(you)較(jiao)小(xiao)的(de)(de)(de)(de)靜態(tai)電(dian)(dian)(dian)流(liu)，負(fu)載(zai)小(xiao)的(de)(de)(de)(de)情(qing)(qing)(qing)況下(xia)效率較(jiao)高(gao)，但紋波(bo)較(jiao)大(da)。后者(zhe)在(zai)負(fu)載(zai)大(da)的(de)(de)(de)(de)情(qing)(qing)(qing)況下(xia)具有(you)較(jiao)高(gao)的(de)(de)(de)(de)效率，噪聲小(xiao)。該(gai)控(kong)(kong)制(zhi)(zhi)(zhi)器采(cai)用(yong)的(de)(de)(de)(de)是一種改進型的(de)(de)(de)(de)限流(liu)PFM控(kong)(kong)制(zhi)(zhi)(zhi)方式，控(kong)(kong)制(zhi)(zhi)(zhi)電(dian)(dian)(dian)路(lu)限制(zhi)(zhi)(zhi)電(dian)(dian)(dian)感充電(dian)(dian)(dian)電(dian)(dian)(dian)流(liu)，使其(qi)不超過某一峰(feng)值電(dian)(dian)(dian)流(liu)。既保持了傳統PFM的(de)(de)(de)(de)低(di)靜態(tai)電(dian)(dian)(dian)流(liu)，同時在(zai)較(jiao)大(da)負(fu)載(zai)的(de)(de)(de)(de)情(qing)(qing)(qing)況下(xia)，也具有(you)很高(gao)的(de)(de)(de)(de)效率。而且由于限制(zhi)(zhi)(zhi)了峰(feng)值電(dian)(dian)(dian)流(liu)，采(cai)用(yong)很小(xiao)體積(ji)的(de)(de)(de)(de)外圍元件就(jiu)可獲(huo)得滿(man)意的(de)(de)(de)(de)輸(shu)出紋波(bo)，這樣便于降低(di)電(dian)(dian)(dian)路(lu)成(cheng)本及尺寸。

　　如圖(tu)2所示，將4腳(jiao)接地(di)，可(ke)使其工(gong)作在閉環狀態。芯片由引腳(jiao)2上的電(dian)(dian)壓供電(dian)(dian)，同時也(ye)是輸出(chu)電(dian)(dian)壓。輸入電(dian)(dian)壓可(ke)以(yi)進行從2V到(dao)(dao)輸出(chu)電(dian)(dian)壓的變(bian)(bian)化(hua)。外(wai)接MOS管柵極1腳(jiao)上的電(dian)(dian)壓，從輸出(chu)電(dian)(dian)平到(dao)(dao)零電(dian)(dian)平跳(tiao)變(bian)(bian)，這樣可(ke)以(yi)提供更人的柵極驅動，從而減小(xiao)外(wai)接MOS管的開啟(qi)電(dian)(dian)阻(zu)。

　　MAX1771外(wai)接(jie)MOS管平時(shi)是關閉(bi)(bi)的，此時(shi)電感(gan)(gan)儲能。關閉(bi)(bi)期間，MAX1771會(hui)檢測外(wai)部(bu)輸入(ru)電壓(ya)，一旦降低到了一定限(xian)度，MAX1771就會(hui)開啟外(wai)部(bu)MOS管，電感(gan)(gan)釋放能量，重新提供驅動電壓(ya)。開關頻率隨負(fu)載(zai)電流和輸入(ru)電壓(ya)而(er)定。5V電壓(ya)通過兩個(ge)反饋(kui)電阻分壓(ya)得(de)到。

　　此外，續流二極管(guan)選用肖特基二極管(guan)SS34，該器(qi)件(jian)正向(xiang)導通(tong)電壓(ya)小，響應(ying)時間短。

鋰芯容量指示電路

　　本系(xi)統電(dian)路(lu)設計采用了一(yi)種比較簡(jian)單且實用的(de)(de)方法，即通(tong)過(guo)測試鋰(li)芯電(dian)池放電(dian)的(de)(de)時間電(dian)壓特性(xing)曲(qu)線，選取整個(ge)放電(dian)過(guo)程的(de)(de)四個(ge)位點電(dian)壓，用電(dian)壓來估(gu)算電(dian)池的(de)(de)容量。

　　如圖3所(suo)示(shi)，當(dang)(dang)按下(xia)電(dian)(dian)(dian)壓容(rong)量(liang)(liang)指示(shi)的(de)(de)功(gong)能按鍵，鋰芯(xin)(xin)的(de)(de)電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)壓會(hui)加到(dao)XC61系列芯(xin)(xin)片的(de)(de)VIN與VSS引腳上。當(dang)(dang)電(dian)(dian)(dian)壓高丁4.1V，四(si)個(ge)(ge)芯(xin)(xin)片同(tong)(tong)時工作(zuo)(zuo)，電(dian)(dian)(dian)池(chi)與限流電(dian)(dian)(dian)阻、LED發(fa)光管(guan)形(xing)成四(si)個(ge)(ge)回(hui)路。此時四(si)個(ge)(ge)發(fa)光管(guan)同(tong)(tong)時發(fa)亮(liang)，表(biao)示(shi)電(dian)(dian)(dian)池(chi)容(rong)量(liang)(liang)飽(bao)和。當(dang)(dang)電(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)壓在4.1V～3.8V之間，只有三個(ge)(ge)芯(xin)(xin)片工作(zuo)(zuo)，4102不工作(zuo)(zuo)，此時形(xing)成三個(ge)(ge)回(hui)路，三個(ge)(ge)發(fa)光管(guan)發(fa)亮(liang)，表(biao)示(shi)電(dian)(dian)(dian)池(chi)容(rong)量(liang)(liang)有所(suo)下(xia)降。同(tong)(tong)理可知其它的(de)(de)兩種情(qing)況(kuang)。

鋰芯保護電路

　　如圖1所示，電芯保護電路主要由R5402和HAT2027共同(tong)組成。除此之外，自恢復(fu)保險(xian)絲起(qi)到了最后一(yi)層保護的(de)作用。

　　R5402是(shi)一(yi)種高(gao)精度(du)、基于CMOS的(de)鋰芯電(dian)池(chi)電(dian)壓(ya)保(bao)護芯片。HAT2027是(shi)具有電(dian)流(liu)流(liu)通方向可調的(de)雙MOS產(chan)品(pin)。

　　充(chong)(chong)(chong)(chong)電(dian)(dian)時(shi)，電(dian)(dian)池電(dian)(dian)壓從低(di)到高(gao)(gao)上升，當(dang)電(dian)(dian)池電(dian)(dian)壓大于4.25V時(shi)，充(chong)(chong)(chong)(chong)電(dian)(dian)狀態被鎖(suo)存，引(yin)腳(jiao)COUT就(jiu)會從高(gao)(gao)電(dian)(dian)平(ping)跳為低(di)電(dian)(dian)平(ping)，HAT2027內置二(er)極管發(fa)揮單向(xiang)(xiang)導通作(zuo)用。電(dian)(dian)流(liu)方向(xiang)(xiang)只能從1腳(jiao)到3腳(jiao)，充(chong)(chong)(chong)(chong)電(dian)(dian)電(dian)(dian)源無法繼續(xu)給鋰(li)芯(xin)(xin)充(chong)(chong)(chong)(chong)電(dian)(dian)。如(ru)果(guo)充(chong)(chong)(chong)(chong)電(dian)(dian)電(dian)(dian)源繼續(xu)加(jia)載在鋰(li)芯(xin)(xin)電(dian)(dian)池組兩端，即使鋰(li)芯(xin)(xin)電(dian)(dian)壓在4.25V以下，R5402具有的(de)過(guo)充(chong)(chong)(chong)(chong)鎖(suo)存狀態也不會被釋(shi)放。這樣(yang)就(jiu)保證了電(dian)(dian)池組在連續(xu)充(chong)(chong)(chong)(chong)電(dian)(dian)飽和之(zhi)后，能鎖(suo)存在過(guo)充(chong)(chong)(chong)(chong)狀態，隔離充(chong)(chong)(chong)(chong)電(dian)(dian)電(dian)(dian)源對高(gao)(gao)能量電(dian)(dian)池組持續(xu)充(chong)(chong)(chong)(chong)電(dian)(dian)。只有當(dang)過(guo)充(chong)(chong)(chong)(chong)時(shi)，斷開充(chong)(chong)(chong)(chong)電(dian)(dian)電(dian)(dian)源，過(guo)充(chong)(chong)(chong)(chong)鎖(suo)存狀態才會被釋(shi)放，COUT重新變為高(gao)(gao)電(dian)(dian)平(ping)，HAT2027的(de)1、3引(yin)腳(jiao)此時(shi)雙向(xiang)(xiang)導通，鋰(li)芯(xin)(xin)才能正(zheng)常工作(zuo)。

　　放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)時(shi)(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)下降，當小(xiao)于2.3V時(shi)(shi)，放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)(zhuang)態被(bei)(bei)鎖(suo)存(cun)，引(yin)腳DOUT的(de)(de)輸(shu)出從(cong)高(gao)電(dian)(dian)(dian)(dian)(dian)(dian)平跳為低(di)電(dian)(dian)(dian)(dian)(dian)(dian)平，HAT2027內(nei)置(zhi)二極管發(fa)揮單向(xiang)(xiang)導(dao)通(tong)作(zuo)用(yong)。電(dian)(dian)(dian)(dian)(dian)(dian)流方向(xiang)(xiang)只能(neng)(neng)從(cong)3腳到1腳，鋰芯電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)組(zu)(zu)無法繼續給負載放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)。如果沒有接上充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)，即使鋰芯電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)高(gao)于過(guo)(guo)放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)的(de)(de)最(zui)大值，放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)鎖(suo)存(cun)狀(zhuang)(zhuang)態也不會被(bei)(bei)釋放(fang)(fang)，這就保證了電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)組(zu)(zu)在(zai)(zai)經過(guo)(guo)長時(shi)(shi)間(jian)放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)，電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)下降到2.3V之后，能(neng)(neng)鎖(suo)存(cun)在(zai)(zai)過(guo)(guo)放(fang)(fang)狀(zhuang)(zhuang)態，隔離低(di)能(neng)(neng)量電(dian)(dian)(dian)(dian)(dian)(dian)池(chi)組(zu)(zu)持續放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)。只有當過(guo)(guo)放(fang)(fang)時(shi)(shi)，接上充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)，鋰芯電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)開始高(gao)于過(guo)(guo)放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)時(shi)(shi)，過(guo)(guo)放(fang)(fang)鎖(suo)存(cun)狀(zhuang)(zhuang)態才會被(bei)(bei)釋放(fang)(fang)，同(tong)時(shi)(shi)引(yin)腳DOUT的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)重(zhong)新變(bian)為高(gao)電(dian)(dian)(dian)(dian)(dian)(dian)平，HAT2027的(de)(de)1、3引(yin)腳雙(shuang)向(xiang)(xiang)導(dao)通(tong)，鋰芯既(ji)能(neng)(neng)工(gong)作(zuo)在(zai)(zai)放(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)(zhuang)態，又能(neng)(neng)工(gong)作(zuo)在(zai)(zai)充(chong)電(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)(zhuang)態。

　　當(dang)鋰(li)(li)芯(xin)短路(lu)(lu)時，D。，跳到(dao)低電平。此時，鋰(li)(li)芯(xin)受HAT2027控(kong)制無法放(fang)電，起到(dao)鋰(li)(li)芯(xin)保(bao)護作用。與(yu)此同時，自恢(hui)復(fu)(fu)保(bao)險絲由于短路(lu)(lu)的(de)大電流，會受熱膨脹，電路(lu)(lu)切斷，起到(dao)最后一層保(bao)護的(de)作用。當(dang)短路(lu)(lu)故障(zhang)排(pai)除，白恢(hui)復(fu)(fu)保(bao)險絲恢(hui)復(fu)(fu)，R5402檢(jian)電器(qi)釋放(fang)，D。，，重新恢(hui)復(fu)(fu)高電平。

　　該電路還增設了“休眠”的功能。當電路工作在過放狀態，補充電流將會保持非常低的值，從而停止內部電路的工作，使低能量的鋰芯不會被R5402和系統后級回路繼續消耗能量。該電路還具有瞬時監控功能。在鋰芯負極取一個電壓接到R5402的V引腳，內置檢電器的延時可以減少大概1／57秒。因此，可以監測電池容量瞬時狀態。
 

充電管理電路

　　充電管理電路由CN3066和繼電器構成，如圖4所示。當隨身電源監測到有充電器對(dui)其充電(dian)(dian)時，繼電(dian)(dian)器(qi)令CN3066開始工作，CN3066將整個充電(dian)(dian)管理過程分(fen)為四個部分(fen)，即預充電(dian)(dian)、恒流充電(dian)(dian)、恒壓充電(dian)(dian)以(yi)及維護充電(dian)(dian)。

　　當(dang)CN3066開始工作時(shi)，CN3066會(hui)檢(jian)測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)是否較(jiao)(jiao)低，如果是，則采(cai)用涓(juan)流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，即一個比較(jiao)(jiao)小(xiao)的恒(heng)(heng)(heng)定電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)對電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)進行(xing)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，直至電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)上升到一個安(an)全(quan)值。之后(hou)，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)保持較(jiao)(jiao)大(da)值不(bu)變，通常(chang)是涓(juan)流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)的10倍或更大(da)。1000mAh的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)采(cai)用700mA電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，這可(ke)以(yi)避(bi)免大(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)對鋰(li)芯(xin)的損(sun)壞。在(zai)恒(heng)(heng)(heng)流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)和涓(juan)流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)(zhuang)態下(xia)，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)管(guan)理芯(xin)片連(lian)續監控電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，當(dang)單節鋰(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)達到4.2V，恒(heng)(heng)(heng)流(liu)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)(zhuang)態結束，轉入恒(heng)(heng)(heng)壓(ya)(ya)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)(zhuang)態。在(zai)該(gai)狀(zhuang)(zhuang)態下(xia)，充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)恒(heng)(heng)(heng)定在(zai)4.2V。當(dang)鋰(li)芯(xin)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)下(xia)降為原(yuan)來的1／10之后(hou)，恒(heng)(heng)(heng)壓(ya)(ya)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)(zhuang)態結束。在(zai)維(wei)(wei)護充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)(zhuang)態，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)充(chong)(chong)(chong)足電(dian)(dian)(dian)(dian)(dian)(dian)(dian)后(hou)，若移動電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源仍(reng)插在(zai)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)上，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)會(hui)由于自放(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)而損(sun)失電(dian)(dian)(dian)(dian)(dian)(dian)(dian)量。CN3066以(yi)非常(chang)小(xiao)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)對鋰(li)芯(xin)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)或監測電(dian)(dian)(dian)(dian)(dian)(dian)(dian)池(chi)(chi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)位，以(yi)備對鋰(li)芯(xin)再充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)，這種狀(zhuang)(zhuang)態稱(cheng)為維(wei)(wei)護充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀(zhuang)(zhuang)態。

　　在本電(dian)路中，CN3066會實(shi)時監(jian)測鋰(li)芯的電(dian)壓(ya)(ya)、溫(wen)度(du)、充(chong)電(dian)電(dian)流和(he)充(chong)電(dian)時間。一旦電(dian)池(chi)的溫(wen)度(du)達(da)到(dao)(dao)60℃，或鋰(li)離子電(dian)池(chi)的電(dian)壓(ya)(ya)達(da)到(dao)(dao)4.2V，恒(heng)壓(ya)(ya)充(chong)電(dian)狀態自動終止。此外，還應(ying)設置最長(chang)恒(heng)壓(ya)(ya)充(chong)電(dian)時間。在溫(wen)度(du)和(he)電(dian)壓(ya)(ya)檢(jian)測失(shi)敗的情況下，可以保證鋰(li)電(dian)池(chi)安全充(chong)電(dian)。

　　當拔掉充電器，CN3066關閉，隨身電源處于預放電狀態。多功能擴(kuo)展電路

高亮照明功能

　　戶外活動(dong)時，特別是(shi)夜(ye)間(jian)活動(dong)，需(xu)要(yao)一個(ge)高亮(liang)的光源。如圖5所示(shi)，夜(ye)行高亮(liang)照(zhao)明系(xi)統，在USB輸(shu)出口可得到(dao)5V電壓，加上高亮(liang)發光二(er)極管(guan)和一個(ge)小的限流(liu)電阻共(gong)同(tong)組成。高亮(liang)管(guan)足夠(gou)5米內的照(zhao)明光程。

戶外報警功能

　　戶外出(chu)行，個人財(cai)(cai)物(wu)的防(fang)盜至關重要。安全可靠的報(bao)警系(xi)統(tong)有助于保(bao)障個人財(cai)(cai)物(wu)的安全，特別是(shi)戶外野(ye)營，靈(ling)敏的防(fang)盜措施在夜間將發揮其巨(ju)大功(gong)效(xiao)。

　　如圖5所示，當按下預報警功能鍵時，USB輸出電壓加載在報警系統上，此時移動隨身電源處于“預報警”狀態。當水銀開關B1位置偏移正常的斷開位置，將觸發繼電器工作，使KD9561音樂片工作，發出報警響聲，提醒注意安全。
 

 野外驅蚊功能

　　如圖6所示，由左(zuo)邊(bian)555合(he)成的(de)振蕩頻率約(yue)為(wei)22KHz，再(zai)由右邊(bian)555單穩態電路(lu)產生一個50Hz，占空比為(wei)50％的(de)方波(bo)輸入左(zuo)邊(bian)555的(de)5腳，合(he)成一種(zhong)噪聲(sheng)，用于驅趕蚊于。

　　電路測試

DC-DC電路測試

　　由圖(tu)7可見(jian)，移動(dong)電源連(lian)續放電的總能量在2200mAh以上，輸出穩定。

擴展功能模塊的測試

　　夜行高亮燈管的有效光程為6米。報警系統能夠正常工作。驅蚊系統發出21KHz的噪聲，對蚊子具有明顯的驅趕作用。
總體測試

　　實(shi)驗結(jie)果證明，多功能(neng)隨(sui)身電(dian)源(yuan)能(neng)對(dui)市面上(shang)大多數手機連續(xu)充電(dian)5次(ci)以上(shang)，對(dui)MP3、MP4充電(dian)12次(ci)以上(shang)，表明隨(sui)身電(dian)源(yuan)在(zai)戶外活(huo)動中(zhong)有充足的能(neng)量儲備(bei)。

　　本(ben)系統方案設(she)計將多功能、低功耗、安全性(xing)、高容量、重量輕(qing)等諸多特點整(zheng)(zheng)合在一起，使整(zheng)(zheng)個(ge)產品(pin)的設(she)計符合實際使用要(yao)求，具有廣闊的市場(chang)前景。

　　該(gai)方案科學縝密地(di)排除(chu)了鋰(li)芯在使用過程(cheng)中(zhong)出(chu)現的各(ge)種安(an)全隱(yin)患(huan)，與此同時，還巧妙地(di)設計了幾個人性化的功能模塊，滿(man)足了戶(hu)外(wai)活動的常見需求(qiu)。