^546 發明說明 【發明所屬之技術領域】 其是關Γ種風^統及其停切制電路，尤 壤轉之η戶1用一、k衝知止電路控制該風扇系統和緩的停止 和之風扇系統之停止控制電路。 【先前技術】 利用數位微控制器(Micr〇-C_〇— Unit, U) μ 咖_電路，進行電子產品之設計 疋目W業界常用的技術1而 5亥數位微控制哭乃兮啻士兩 卞邗忒包子產σ口呀 導致該電子g 奸開關會13為操作在高頻而 需求將私相當重要的設^題因此，4子產品之散熱 該電子產=的=熱方式係以風扇系統之運轉進行 操作之考量，然而基於風扇控制及使用者安全 電源斷電時，停正該風扇 &轉电路以便在 精確性及❹者之操作安全。^ ’叫瓶扇控制之 如第1圖所示，1姐-你… 控制電路，包含' ^ 自用風扇系統及其停止 能電容93、—即日士主式·1區動器' 91、一控制單元92、一儲 電壓源VCC連接—馬達線圈95。其中一 電容93及該即時停止、控制單元92、儲能 源所需。該橋式驅動笋9 =提供上述該等構件之電 M94及二下橋電。° 1具有二上橋電子式開關]y[9l、 子式開關M92、_;該㈣停止電路 201117546 94具有二電子式開_ M95 ' M%，分別連接並控制該橋 式驅動H 91之二下橋電子式關M92、M93;該控制單 兀92具有四個控制輸出端分別連接麗即時停止電路舛 之一電子式開關M95、M%及另二電子式開關M97、 順’該馬達線®1 95之—端連接在該橋式驅動ϋ 91之上 橋電子式開關Μ91與下橋電子式開關湖相互連接之連 接處；而另一端連接在該橋式驅動器91之另—上橋電子 式開關Μ94與另一下橋電子式開關觀相互連狀連接 。。一田4電壓源VCC對該風扇系統正常供電時，該控 =二自其控制輸出端產生-組控制信號’控制該橋式 動m及鄭铸止電路94動作，使該橋式驅動器 之-上橋電子式_ M91、娜及 —3形成交互導通，以控制該馬達線圈;= =成交變電流；例如：該電子式„_及觀形成 二i而该另二電子式開關购及跑形成開路，以便 於該馬達線圈順向流動；反之，則控制該電流反向 至預定電量。 谷93持續進行充電直 當該賴源να:巾斷時，雜财元92不再提供 =制信號予該橋式驅動器91及該即時停止電路料動作:、 =亭止電路94之二電子式開關M95、m96 路了同時，·㈣容93放電，由_橋式麵器9 =橋電子式開關购、廳之各導通控制端(如圖、 端)係連制_能電容93，進而使簡式驅動器91 201117546 之一下橋電子式開關M92、M93得以因應該儲能電容93 之供电而導通，促使該馬達線圈95之二端電位相同，从 使s亥風扇系統即時停止運轉。 人然而，一般而言，上述習用具有以下缺點，例如： =方、在電壓源VCC正常供電時，該馬達線圈95之電流轉 =持流動’當電壓源VCC中斷時，因該馬達線圈％气 —^而^電㈣間形成等電位，亦即使流動該馬達線圈 =電流目_降為零’以致在此—變化_將在該馬達線圈 j建立極大的感應電動勢，造成電磁干擾；相對 、幸的/亥馬達線圈％之二端同時接地，因此使建立在該馬 停應電動勢亦瞬間降為零，導致該風扇系统 進而降推斥應力，造達振動及料加劇， 操電路之運作穩定性及降低風扇嶙 屬系統及料止控制電t有必魏—步改良上述習用取 【發明内容】 略之運作穩定性及提^供—種可增加風扇系統周邊電 停止控制電路。""H輪作*命的風扇系統及其 停止控制 —驅動裝置及一 、匕3 .馬達、一儲能單元 及、.友騎止電路。該馬達具有—馬達線圈 201117546 ’ 5亥馬達線圈具有二連接端；該儲能單元用 儲存，並在一提供該風扇系統之電壓源中斷日ί進行電能之 以持續該馬達停止轉動之動作；該驅動:，釋放電能 達線圈之二連接端，以控制流經該馬達線圈，性連接該馬 錢衝停止電路電性連接該馬達線圈；之電流流向； 扇系統之電壓源供電中斷時，啟動該緩:當供應該風 ;達線圈二連接端形成-電壓差，並對該=路，使該 文“，進而使該風扇系統在 士止電路釋 止運轉。 7止符間内和緩的停 /根據本發明風扇系統之停止控制電〃 衝停止電路，當供應該 ，係包含一緩 啟動該緩衝停止電路，使;達=電愿源供電中斷時， 差，並對該緩衝停止電路釋放〇 [連接端形成-電壓 ''可控停止時間内和緩的停止=使該風扇系統在 【實施方式】 為讓本發明之b ·« 顯易懂，下文特舉本發明特徵及優點能更明 式，作詳細說明如下： 施例’並配合所附圖 請參照第2圖所干，甘# 屬系統及其停正控制電路;^示本發明苐一實施例之風 置1、一轉動γ+ ，其中該風扇系統包含一驅動裝 轉動1V止電路2、_# 圈4、—緩衝停止電路5务 ％ 3、—馬達及其線 置卜控制單元3 ：；=/_—雜單元“其巾該驅動裝 電性連接至-電_ v^早7° 6及該轉動停止電路2共同 ’、C，以便該電壓源VCC可提供上 201117546 源所f ;再者’該馬達線圈 動裒置1，且該緩衝停止兩 建接方。亥驅 線圈4。其_绪能單元==聯連接於該馬達 電愿源VCC中斷時，釋放一 =丁=之儲存，並在該 達停止轉動之動作 ，―乂、’錢扇系統之該馬 置】及轉動停止電路 連接至该驅動裝 衝分止電路5構成本發明該風 =该緩 該驅動裝置1具有數個電子式開關乂工1:路。 構成一全橋式驅動裝置^计可選擇 弟2圖所示，本發明之轉裝置 也，如 _組成’射該二電子式開 :二= 一弟一臂開關組11，且且有— 串也卩形成 另一電子式開關M2及施串聯形成 而及 且具有-第二串聯連接㈣，並且該二臂;=广 12共同械全橋式之該驅動㈣丨 及 Γ1…成-上橋開關組;而另該:ϊ= M2及]VI3形成一下槔电亍式開關 了橋開關組。該驅動裝置1之四個带； 式開關Ml〜M4係分別選 之四们电子 署m + 电曰曰體開關。另外，該驅動裝 置另6又有一¾子式開關M7'M8，該二 、M8分則遠技兮l & 电于式開關Μ7 。』連接该上橋開關組之二電子式開關及刚 路2配合該職置1下橋開關組之 “ k供一個電子式開關奶、祕，各 M5、M6之輸出端(如第 飞開關 诖接刭賴-留- 曰體之集極端)並聯 早凡6，並個別連接到該驅動裝置1下橋開 201117546 關組之各該電子式開關M2、M3之輸入端(如第2圖所示 之電晶體之閘極端）。其中該轉動停止電路2之二個電^ 式開關M5、M6係分別選自電晶體開關。 該控制單元3包含一控制元件3]、一 pwM轉換電 路32及一感應元件33(如霍爾感測器’ Hall sens〇r)。該控 制元件31可進行本發明該風扇系統之馬達控制信號之^ 收、轉換及輸出丨該PWM轉換電路32連接到該控^制元 件31，以接收並轉換該PW1V[轉換電路32之控制信號， 據以控制本發明該風扇系統之馬達轉速；該感應元°件5九％ 連接到該控制元件31，並接收該感應元件％之控制信號 ，以便該控制元件3〗可判斷本發明該風扇系統之馬 磁極I置。其中該控制元件31具有四個輸出控制端ρι、 P2、、N2 ’其分別連接該轉動停止電路2之二個電子 式開關、M6及該驅動裝置i之另二電子式開關奶、 Μδ之輪入端(如第2圖所示之電晶體之基極端），且 個電子式開關MS、Μ6、Μ7、Μ8之輪出端(如第2 _ 不之電晶體之集極端）另分別連接該電子式開關奶、阳 個=及M4，該控制元件31輸出—級控制信號致動該四 =子式開關M5、M6、M7、M8形成導通或關閉狀能， 進而控制該驅動裝置1及轉動停止電路2之運作。^ 該馬達_ 4配合驅練置丨的錢可設計 =，圈、兩相馬達線圈或三相馬達線圈，於此本發 例係以單相馬達線圈的型態進行電路連接樣態之說 仏八。本發明早相的該馬達線圈4具有二連接端4 刀別連接到該驅動裝置！之第1聯連接點ιη及第 —10 — 201117546 二串聯連接點121，且如第2圖所示，該驅 =:= 接電路架構，藉由控制該驅二: 电于式開關Ml、M2、M3及m4之交互道 ，以便控制請馬達線圈4電流之流向。之又互㈣ I、友衝停止電路5包含— 開關52及一 ♦览从 沿路啟動 電量，因關53。該緩衝元件51用以吸收 緩衝電阻之電阻佶七杜 為4免負載效應，該 擇不大於1 _^^係選自小額定值之電阻值，例如選 迴路啟動開且串聯之該緩衝轉51及該 42，如此，遠::於遠馬達線圈4之二連接端4i及 51 ® ^ 4關52共同形成一緩衝迴路， =^電性連接該迴路啟動開㈣，藉由送出= 另：啟:開關52 ’以控制該緩衝迴路之作動。 電阻胸馬=若選擇為該電阻時’該緩衝電阻之 ,.馬達、、泉圈4之一電感值可決定一停_線衡湘， 叙明該風扇系統之馬達從運轉 ;^ ’ 轉緩衝期決定。 τ止之訏間可精由該停 52及，該緩衝停止電路5之邮啟動開關 及電賴測開關53較佳係選自—電晶 發明較佳實施例將以該電晶體關⑽'隹2關’以下本 作夕〜阳， 開關為例進仃電路連接及動 ==:迴路啟動開關52具有1極端-、 極端523 ;同樣的’該電源偵測開關 _而531、一閉極端切及一源極端533。該 201117546 迴路啟動開關52之汲極端521供串聯該緩衝元件51，且 該緩衝元件51之一端連接該馬達線圈4之連接端41 ;該 迴路啟動開關52之閘極端522連接到該儲能單元6之一 端及該電源偵測開關53之汲極端531 ;該迴路啟動開關 52之源極端523連接到該馬達線圈4之連接端42 ;再者 ，該電源偵測開關53之閘極端532直接連接至該電壓源 VCC ;而該電源偵測開關53之源極端533則直接接地。 藉由上述缓衝停止電路5之電路連接樣態，該風扇系統之 馬達停止運轉時，可允許馬達電流可逆時針流動於該緩衝 迴路。 再者，如第2圖所示，本發明較佳實施例之緩衝停 止電路5另可包含一防逆流二極體54，串聯連接在該缓 衝迴路，以允許該緩衝迴路之電流逆時針流動，並阻隔由 該馬達線圈4產生且順時針方向流動之電流，以避免該迴 路啟動開關52受到高值電流的衝擊而損壞。 當該電壓源VCC對該風扇系統正常供電時，該控制 單元3控制該二電子式開關M7、M8及該轉動停止電路2 之二電子式開關M5、M6動作，使該驅動裝置1之二電 子式開關Ml及M2同步導通時，另二電子式開關M3及 M4同步開路；反之，該二電子式開關Ml及M2同步開 路時，另二電子式開關M3及M4同步導通，以交變控制 該馬達線圈4上的電流流向。另外，該儲能單元6持續進 行充電直至預定電量。 請參照第2及3圖所示，在該電壓源VCC對該風扇 系統正常供電情況下，該電源偵測開關53之閘極端532 12 — 201117546 接收該電壓源VCC而導通，使其汲極端531及源極端 533電位為零，此時，該迴路啟動開關52之閘極端522 因接收零電壓而未能導通，使該缓衝迴路形成開路，而不 會影響該馬達線圈4之電流正常操作。 當該電壓源VCC中斷時，該控制單元3不再提供控 制信號予該轉動停止電路2 ;同時，該控制單元3因不再 接收電壓，而使該二電子式開關M7、M8及該轉動停止 電路2之二電子式開關M5、M6形成開路，此時，該儲 能單元6釋放電能，由於該驅動裝置1之電子式開關M2 及M3之各導通控制端（如圖2之閘極端)係連接到該儲能 單元6,而使該驅動裝置1之下橋開關組之電子式開關 M2及M3得以因應該儲能單元6之供電而導通。 請參照第2及4圖所示，在該電壓源VCC中斷的情 況下，該電壓源VCC不再對該電源偵測開關53之閘極端 532提供電壓，且該儲能單元6受到一個二極體D2的阻 隔，而無法對該電源偵測開關53供電，使該電源偵測開 關53開路，此時，該緩衝停止電路5之迴路啟動開關52 因接收該儲能單元6釋放之電能而導通，使該緩衝停止電 路5之緩衝迴路形成導通，且因為該驅動裝置1之電子式 開關M2及M3導通接地，使該馬達線圈4上之電流在斷 電瞬間因無其他的能量釋放路徑，而僅能選擇在該緩衝迴 路中流動。藉此，在該電壓源VCC中斷瞬間，該馬達線 圈電流因流經該緩衝元件51，而在該馬達線圈4二連接 端41、42之間形成一電壓差，並藉由該缓衝迴路吸收該 馬達線圈4之能量'以便本發明該風扇系統之馬達在一可 13 201117546 間内和緩的停止運轉，而不會發生如習知風扇系 統及/、停止控制電路因控制馬達即時停止所衍生之缺點。 另外，本發明之風扇系統斷電時雖無法即時停止轉 動仁本發明之風扇系統可藉由缓衝元件51的選用進行 設計以適當調整該可控停止時間（即停轉緩衝期之時間）， 進而在最紐時間内控制該風扇系統和緩的停止運轉，因此 ’本發明風扇系統除了可改善如第i圖之習知風扇系統及 其停止控制電路之缺點外，亦可避免風扇系統在未裝設該 ^止控制電路而進行自然慣性(coast mode operation)停轉 時，因停止時間無法控制，而造成人員誤觸受傷之問題。 為更進一步清楚界定該停轉緩衝期，以下以一實際 汁具例作為說明。若該缓衝元件5]選擇自具有】歐姆電 阻值之緩衝電阻，且該馬達電感值為2〇〇微亨利(uH)，則 其電氣時間常數ί可由下式計算： L 200 xl〇~6 ϊ ~= 2QQ (微秒) 依據電路原理，由電感電阻天形成的充放電迴路 ，一個完整的充放電時間（等同於停轉緩衝期之時間）可由 5倍的電氣時間常數/決定，因此，本發明若以上述電感 電阻參數進行設計，該停轉緩衝期則為1毫秒，亦即，藉 由上述電感Ζ·電阻及形成的迴路之控制，使本發明之馬 達自電源中斷經過1毫秒的時間停止轉動。同理可推，本 發明可藉由上述電感-電阻值之選用設計從而調整該停轉 緩衝期。 201117546 ' 請參照第5圖所示，其揭示本發明第二實施例之風 - 扇系統及其停止控制電路，相較於第一實施例，本發明第 二實施例可省去第一實施例之轉動停止電路2之設置，且 設有一緩衝停止電路5’，該緩衝停止電路5’串聯連接該 馬達線圈4。更詳言之，該緩衝停止電路Y包含一緩衝元 件51’及一迴路啟動開關52’。該緩衝元件51’係串聯連接 ' 該迴路啟動開關52’，且串聯的緩衝元件51’及迴路啟動 開關52’之一端係進一步串聯於該馬達線圈4之連接端4] φ ，而串聯的緩衝元件51’及迴路啟動開關52’之另一端電 性連接到該儲能單元6之一端；亦即，如第5圖所示，若 該迴路啟動開關52’選自一場效電晶體時，其汲極端電性 連接該儲能單元6之一端；再者，由於連接於該馬達線圈 4另一連接端42的上臂電子式開關M4係受到該電子式 開關M8之控制，因此，在斷電時，該上臂電子式開關 M4可受控導通。如此，該馬達線圈4、該缓衝元件5Γ、 該迴路啟動開關52’及該上臂電子式開關M4共同形成一 ® 緩衝迴路，當該風扇系統之馬達因斷電而停止運轉時，其 他電子式開關Ml、M2、M3、M7、M8形成關閉，但該 迴路啟動開關52’及該上臂電子式開關M4形成導通，使 該馬達線圈4之二連接端41、42形成不等電位，以便該 . 馬達電流可流動於該緩衝迴路，並進行該馬達電流之釋能 〇 進一步說明第二實施例之電路動作，該迴路啟動開 關52’係為一 P通道(P-channel)電晶體開關，其具有一汲 極端521’、一閘極端522’及一源極端523’。該迴路啟動 15 — 201117546 開關52,之没極端52〗，供串聯該緩衝元件5i，，且該缓衝 7G件51’之-端連接該馬達線圈4之連接端化該迴路啟 動開關52’之閉極端522，電性連接該電壓源vcc，但該間 極端切，與該雜單元6電性隔_卩_能單元6益法 對該迴路啟動開關52，之_端522，供電）；而該迴路啟動 開關52’之源極端523’連接到該儲能單元6之一端。另外 ’該上臂電子式開關M4亦為一 p通道㈣肪㈣電晶體 開關’其閘極端亦電性連接該迴路啟動開g 52，之間 522,。 *遠電壓源vcc供電正常時，該迴路啟動開關52, 之開^而522及该源極端523’因同時接收該電壓源vcc 之電壓，而使二端522,及523,壓差為零，其小於電晶體 開關之-臨界電壓’以致該迴路啟動開關52，形成關閉狀 態，此時，該驅動裝置i之各該電子式開關M1、M2、 M3及M4受該控制元件31之控制而交互導通，以便控制 該馬達線圈4電流之流向。 當該電壓源VCC中斷時，該儲能單元6釋放電能， 使該迴路啟動開關52’之源極端523,之電壓大於該路啟動 開關52’之閘極端522’，進而導通該迴路啟動開關52,； 另一方面，藉由該儲能單元6之釋能，而使該上臂電子式 開關M4之源極端同樣建立一大於其閘極端之電壓，進而 進入導通狀態，藉此，該馬達電流可流動於該緩衝迴路， 並進行該馬達電流之釋能。 請參照第6圖所示，其揭示本發明第三實施例之風 扇系統及其停止控制電路，相較於第二實施例，本發明第 16 201117546 三實施例設有—緩衝停止電路5，， 步包含一第一儲能元件61 _ 4者用匕早7L 6進一 停止電路。該緩衝 停止電路5，，包含—緩衝元件5i，，之，該緩衝 -第-電源偵測開關53”及一第二心:啟動開關52，，、 緩衝元件51”係串聯連接 屯源债測開關54”。該 連接5玄迴路啟動開關52”， 緩衝兀件5Γ，及迴路啟動開關 =如的^546 DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] It is a kind of wind system and its stop-cut circuit, and the N-turn 1 is used to control the fan system and the slow stop. The stop control circuit of the fan system. [Prior Art] Using a digital microcontroller (Micr〇-C_〇-Unit, U) μ _ _ circuit, design of electronic products, the industry commonly used technology 1 and 5 Hai digital micro control crying gentleman Two 卞邗忒 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产 产The operation of the system is considered for operation. However, based on the fan control and the user's safe power supply, the fan & turn circuit is stopped for safety and accuracy. ^ 'Call the fan control as shown in Figure 1, 1 sister - you... Control circuit, including ' ^ self-use fan system and its stop energy capacitor 93, - that is, the Japanese main type · 1 zone actuator' 91, a control The unit 92 and a storage voltage source VCC are connected to the motor coil 95. One of the capacitors 93 and the instant stop, the control unit 92, and the energy storage source are required. The bridge drive shooter 9 = provides the electric M94 and the second lower bridge of the above components. ° 1 has two upper bridge electronic switches] y [9l, sub-type switch M92, _; the (four) stop circuit 201117546 94 has two electronic open _ M95 ' M%, respectively connected and control the bridge drive H 91 two The lower bridge is electronically closed M92 and M93; the control unit 92 has four control outputs connected to the instant stop circuit, one of the electronic switches M95, M% and the other two electronic switches M97, 顺' the motor line® The end of the bridge is connected to the bridge drive ϋ 91 and the bridge electronic switch Μ 91 and the lower bridge electronic switch lake are connected to each other; and the other end is connected to the bridge drive 91 - the other bridge electronic The switch Μ 94 is connected to the other lower bridge electronic switch. . When the power supply VCC of the field 4 is normally powered by the fan system, the control=2 generates a control signal from the control output to control the bridge motion m and the Zheng casting circuit 94 to make the bridge driver - The upper bridge electronic _ M91, Na and _3 form an alternating conduction to control the motor coil; = = the transaction current; for example: the electronic „ _ _ and the formation of two i and the other two electronic switches purchase and run Open circuit to facilitate the smooth flow of the motor coil; otherwise, control the current to reverse to the predetermined amount of electricity. Valley 93 continues to charge directly when the source να: when the towel is broken, the miscellaneous wealth 92 is no longer provided = signal to The bridge driver 91 and the instant stop circuit material action:, = the pavilion circuit 94 of the two electronic switches M95, m96 road at the same time, · (four) capacity 93 discharge, by the _ bridge face device 9 = bridge electronic switch purchase The conduction control terminals (pictured, end) of the hall are connected to the _capacitor 93, so that one of the lower-drive electronic switches M92 and M93 of the simple driver 91 201117546 can be turned on according to the power supply of the storage capacitor 93, prompting The two ends of the motor coil 95 have the same potential, so that the s-hai fan However, in general, the above-mentioned conventional use has the following disadvantages, for example: = square, when the voltage source VCC is normally powered, the current of the motor coil 95 = flow] when the voltage source VCC is interrupted, The motor coil generates an equipotential between the gas and the electric (4), and even if the motor coil = current, the current is reduced to zero, so that the change _ will establish a large induced electromotive force in the motor coil j, resulting in electromagnetic Interference; relatively, fortunately, the two ends of the Hai motor coil are grounded at the same time, so that the electromotive force established at the horse stop is also instantaneously reduced to zero, causing the fan system to further reduce the repulsion stress, causing vibration and material aggravation, The operational stability of the circuit and the reduction of the fan system and the control of the electric control t must be improved. The above-mentioned conventional use [suggestions] Slightly operational stability and improvement - can increase the peripheral power stop control circuit of the fan system ""H-wheeled fan system and its stop control-drive device and one, 匕3. motor, an energy storage unit and, friend riding circuit. The motor has - motor line 201117546 '5 Hai motor coil has two connection ends; the energy storage unit is used for storage, and the power source of the fan system is provided to interrupt the operation of the motor to stop the rotation of the motor; the drive: release power The second connection end of the coil is controlled to flow through the motor coil, and the connection circuit is electrically connected to the motor circuit; the current flow direction; when the power supply of the voltage source of the fan system is interrupted, the slow start is started: when the wind is supplied The coil two connections form a voltage difference, and the = road, so that the text, and thus the fan system in the circuit to release the operation. The stop of the fan system according to the present invention is controlled by the stop of the fan system according to the present invention. When the supply is stopped, the buffer stop circuit is included, and the power supply is interrupted when the power supply is interrupted. And releasing the buffer stop circuit 〇 [connection forming - voltage '' controllable stop time and gentle stop = making the fan system in the [embodiment] in order to make the b · « of the present invention easy to understand, the following special The features and advantages of the invention can be more clearly described and described in detail as follows: The embodiment of the present invention and the accompanying drawings refer to FIG. 2, the system and its stopping control circuit; The wind is set to 1, the rotation γ+, wherein the fan system comprises a driving device rotating 1V stop circuit 2, _# circle 4, - buffer stop circuit 5%, - motor and its line control unit 3:; /_-Hybrid unit "The towel is electrically connected to the electric_v^ early 7° 6 and the rotation stop circuit 2 is common ', C, so that the voltage source VCC can provide the source of the 201117546 source; 'The motor coil is set to 1 and the buffer stops the two connections. 4. The _Xu energy unit == connected to the motor when the power source VCC is interrupted, the release of a = D = storage, and the action of stopping the rotation, "乂, the horse fan system" And the rotation stop circuit is connected to the driving and loading and stopping circuit 5 to constitute the wind of the present invention. The driving device 1 has a plurality of electronic switches: 1 way. A full bridge type driving device is formed. As shown in Fig. 2, the rotating device of the present invention also has the same electronic component switch, and has a string of other electronic switches M2 and a series connection. Formed and has - second series connection (four), and the two arms; = wide 12 common mechanical full bridge type of drive (four) 丨 and Γ 1 ... into - upper bridge switch group; and the other: ϊ = M2 and] VI3 Forming the electric switch of the bridge switch group. The four belts of the driving device 1; the type switches M1 to M4 are respectively selected by the electronic department m + electric body switch. In addition, the driving device is another 6 There is a 3⁄4 sub-switch M7'M8, the second and M8 points are far from the &l & electric switch Μ7. 』Connect the upper bridge switch The second electronic switch and the rigid road 2 cooperate with the position of the lower switch group of the "1" for an electronic switch milk, secret, the output of each M5, M6 (such as the first fly switch 刭 - 留 - stay - 曰The set of the body is connected in parallel with the 6th, and is individually connected to the input end of the electronic switch M2 and M3 of the driving group 1 under the bridge of the 201117546 group (such as the gate of the transistor shown in Fig. 2) . The two types of switches M5 and M6 of the rotation stop circuit 2 are respectively selected from the transistor switches. The control unit 3 comprises a control element 3], a pwM switching circuit 32 and an inductive element 33 (e.g. Hall sensor sens〇r). The control element 31 can perform the control, conversion and output of the motor control signal of the fan system of the present invention. The PWM conversion circuit 32 is connected to the control element 31 to receive and convert the PW1V [control signal of the conversion circuit 32] According to the motor speed of the fan system of the present invention; the sensing element 5 is connected to the control element 31 and receives a control signal of the sensing element %, so that the control element 3 can judge the fan of the present invention. The horse pole of the system is set. Wherein the control element 31 has four output control terminals ρι, P2, N2' which are respectively connected to the two electronic switches of the rotation stop circuit 2, M6 and the other two electronic switch milks of the drive device i, the wheel of the Μδ The input end (such as the base end of the transistor shown in Figure 2), and the round ends of the electronic switches MS, Μ6, Μ7, Μ8 (such as the collector terminal of the 2nd _ non-transistor) are respectively connected to the Electronic switch milk, positive = and M4, the control element 31 output-level control signal actuates the four-sub-switch M5, M6, M7, M8 to form an on or off state, thereby controlling the driving device 1 and rotating Stop the operation of circuit 2. ^ The motor _ 4 can be designed with the money to design =, ring, two-phase motor coil or three-phase motor coil. In this case, the circuit connection state is described by the type of single-phase motor coil. Eight. The motor coil 4 of the earlier phase of the invention has two connecting ends 4 connected to the drive device! The first connection point ιη and the _10 - 201117546 two series connection point 121, and as shown in FIG. 2, the drive =:= is connected to the circuit architecture, by controlling the drive 2: the electric switch M1, M2 The interaction between M3 and m4 is to control the current flow of the motor coil 4. In addition, (4) I, the friend stop circuit 5 includes - the switch 52 and a button to start the power from the way, because off 53. The buffering component 51 is configured to absorb the resistance of the snubber resistor, and the voltage is not more than 1 _^^ is selected from a small rated value of the resistance value, for example, the circuit is started and the buffer is turned in series. And 42, so far:: at the two ends 4i of the far motor coil 4 and 51 ® ^ 4 off 52 together form a buffer circuit, = ^ electrically connected to the circuit to start open (four), by sending out = another: : Switch 52' to control the actuation of the buffer circuit. Resistance chest horse = If the resistor is selected, 'the buffer resistor, the motor, the spring 4, the inductance value can determine a stop _ line Hengxiang, the motor of the fan system is described as running; ^ ' 缓冲 buffer Period decision. The stop switch 52 and the post start switch 53 of the buffer stop circuit 5 are preferably selected from the following: a preferred embodiment of the invention will turn off the transistor (10)' 2 off 'the following is the evening ~ Yang, the switch is an example of the circuit connection and movement ==: the circuit start switch 52 has 1 extreme -, the extreme 523; the same 'the power detection switch _ and 531, a closed extreme cut And a source extreme 533. The anode end 521 of the 201117546 circuit start switch 52 is connected in series with the buffer element 51, and one end of the buffer element 51 is connected to the connection end 41 of the motor coil 4; the gate terminal 522 of the circuit start switch 52 is connected to the energy storage unit 6 One end and the 汲 terminal 531 of the power detecting switch 53; the source terminal 523 of the circuit starting switch 52 is connected to the connecting end 42 of the motor coil 4; further, the gate terminal 532 of the power detecting switch 53 is directly connected to The voltage source VCC; and the source terminal 533 of the power detecting switch 53 is directly grounded. By the circuit connection mode of the buffer stop circuit 5 described above, when the motor of the fan system is stopped, the motor current can be allowed to flow counterclockwise to the buffer circuit. Furthermore, as shown in FIG. 2, the buffer stop circuit 5 of the preferred embodiment of the present invention may further include a backflow prevention diode 54 connected in series to the buffer circuit to allow the current of the buffer circuit to flow counterclockwise. And blocking the current generated by the motor coil 4 and flowing clockwise to prevent the circuit start switch 52 from being damaged by the impact of a high value current. When the voltage source VCC normally supplies power to the fan system, the control unit 3 controls the two electronic switches M7, M8 and the two electronic switches M5, M6 of the rotation stop circuit 2 to operate, so that the two electronic components of the driving device 1 When the switches M1 and M2 are synchronously turned on, the other two electronic switches M3 and M4 are synchronously opened; otherwise, when the two electronic switches M1 and M2 are synchronously open, the other two electronic switches M3 and M4 are synchronously turned on, and the alternating control is performed. The current on the motor coil 4 flows. In addition, the energy storage unit 6 continues to charge until a predetermined amount of power is supplied. Referring to Figures 2 and 3, when the voltage source VCC is normally powered by the fan system, the gate terminal 532 12 - 201117546 of the power detecting switch 53 receives the voltage source VCC and turns on, causing the pole 531 to be turned on. The source terminal 533 has a zero potential. At this time, the gate terminal 522 of the circuit start switch 52 fails to conduct due to the reception of the zero voltage, so that the buffer circuit forms an open circuit without affecting the normal operation of the current of the motor coil 4. When the voltage source VCC is interrupted, the control unit 3 no longer provides a control signal to the rotation stop circuit 2; at the same time, the control unit 3 stops the two electronic switches M7, M8 and the rotation because the voltage is no longer received. The two electronic switches M5 and M6 of the circuit 2 form an open circuit. At this time, the energy storage unit 6 discharges electric energy, and the conduction control terminals (such as the gate terminal of FIG. 2) of the electronic switches M2 and M3 of the driving device 1 are The energy storage unit 6 is connected to the electronic switch M2 and M3 of the lower switch group of the driving device 1 to be turned on according to the power supply of the energy storage unit 6. Referring to FIGS. 2 and 4, in the case where the voltage source VCC is interrupted, the voltage source VCC no longer supplies a voltage to the gate terminal 532 of the power detecting switch 53, and the energy storage unit 6 receives a diode. The power of the power detecting switch 53 is not blocked, and the power detecting switch 53 is opened. At this time, the loop start switch 52 of the buffer stopping circuit 5 is turned on by receiving the power released by the energy storage unit 6. The buffer circuit of the buffer stop circuit 5 is turned on, and because the electronic switches M2 and M3 of the driving device 1 are grounded, the current on the motor coil 4 is free from other energy release paths at the moment of power-off. Only the flow in the buffer loop can be selected. Thereby, at the moment when the voltage source VCC is interrupted, the motor coil current flows through the buffering element 51, and a voltage difference is formed between the two connecting ends 41 and 42 of the motor coil 4, and is absorbed by the buffer circuit. The energy of the motor coil 4 is such that the motor of the fan system of the present invention can be slowly stopped within a period of 2011 17546, without the occurrence of a conventional fan system and/or a stop control circuit due to the immediate stop of the control motor. Disadvantages. In addition, although the fan system of the present invention cannot be stopped immediately when the power is turned off, the fan system of the present invention can be designed by the selection of the buffering member 51 to appropriately adjust the controllable stop time (ie, the time of the suspension buffer period). In addition, the fan system is controlled to be gently stopped during the maximum time. Therefore, the fan system of the present invention can not only improve the disadvantages of the conventional fan system and the stop control circuit thereof as shown in FIG. When the control mode is set to stop the natural mode operation, the stop time cannot be controlled, and the person is mistakenly touched and injured. To further clearly define the stall period, the following is an example of a practical juice. If the buffer element 5] is selected from a snubber resistor having an ohmic resistance value and the motor inductance value is 2 〇〇 micro Henry (uH), the electrical time constant ί can be calculated by the following formula: L 200 xl 〇~6 ϊ ~= 2QQ (microseconds) According to the circuit principle, the charge and discharge circuit formed by the inductor resistance days, a complete charge and discharge time (equivalent to the time of the stall buffer period) can be determined by 5 times the electrical time constant /, therefore, In the present invention, if the inductor resistance parameter is designed, the stall buffer period is 1 millisecond, that is, the motor of the present invention is interrupted by the power supply for 1 millisecond by the control of the inductor Ζ resistor and the formed loop. Time stops rotating. Similarly, the present invention can adjust the stall period by the above-mentioned selection of the inductor-resistance value. 201117546' Please refer to FIG. 5, which discloses a wind-fan system and a stop control circuit thereof according to a second embodiment of the present invention. Compared with the first embodiment, the second embodiment of the present invention can omit the first embodiment. The rotation stop circuit 2 is disposed, and is provided with a buffer stop circuit 5' which is connected in series to the motor coil 4. More specifically, the buffer stop circuit Y includes a buffering element 51' and a loop start switch 52'. The buffer element 51' is connected in series to the circuit start switch 52', and one end of the series buffer element 51' and the loop start switch 52' is further connected in series to the connection end 4] φ of the motor coil 4, and the series buffer The other end of the component 51' and the loop start switch 52' is electrically connected to one end of the energy storage unit 6; that is, as shown in FIG. 5, if the loop start switch 52' is selected from a field effect transistor,汲 extremely electrically connected to one end of the energy storage unit 6; further, since the upper arm electronic switch M4 connected to the other connection end 42 of the motor coil 4 is controlled by the electronic switch M8, when the power is off The upper arm electronic switch M4 can be controlled to be turned on. In this way, the motor coil 4, the buffer element 5, the circuit start switch 52' and the upper arm electronic switch M4 together form a ® buffer circuit. When the motor of the fan system stops operating due to power failure, other electronic types The switch M1, M2, M3, M7, M8 form a close, but the circuit start switch 52' and the upper arm electronic switch M4 are turned on, so that the two connecting ends 41, 42 of the motor coil 4 form an unequal potential, so that the. The motor current can flow in the buffer circuit and perform the release of the motor current. The circuit action of the second embodiment is further described. The circuit start switch 52' is a P-channel transistor switch having One extreme 521', one gate extreme 522' and one source extreme 523'. The circuit starts 15 - 201117546 switch 52, which is not extreme 52, for connecting the buffer element 5i, and the end of the buffer 7G member 51' is connected to the connection of the motor coil 4 to the circuit start switch 52' The closed terminal 522 is electrically connected to the voltage source vcc, but the terminal is extremely cut, and the hybrid unit 6 is electrically separated from the hybrid unit 6 to enable the switch 52, the terminal 522, to supply power to the circuit; The source terminal 523' of the loop start switch 52' is connected to one end of the energy storage unit 6. In addition, the upper arm electronic switch M4 is also a p-channel (four) fat (four) transistor switch' whose gate terminal is also electrically connected to the circuit to open the opening 52, 522. * When the remote voltage source vcc is powered normally, the circuit activates the switch 52, and the open source 522 and the source terminal 523' receive the voltage of the voltage source vcc at the same time, so that the two ends 522, and 523 have a voltage difference of zero. It is smaller than the -threshold voltage of the transistor switch so that the circuit activates the switch 52 to form a closed state. At this time, the electronic switches M1, M2, M3 and M4 of the driving device i are controlled by the control element 31 to interact. It is turned on to control the flow of current of the motor coil 4. When the voltage source VCC is interrupted, the energy storage unit 6 releases the electric energy, so that the circuit activates the source terminal 523 of the switch 52', and the voltage is greater than the gate terminal 522' of the circuit start switch 52', thereby turning on the circuit start switch 52. On the other hand, by the release of the energy storage unit 6, the source terminal of the upper arm electronic switch M4 also establishes a voltage greater than its gate terminal, and then enters a conducting state, whereby the motor current can be Flows in the buffer circuit and performs the discharge of the motor current. Referring to FIG. 6, a fan system and a stop control circuit thereof according to a third embodiment of the present invention are disclosed. Compared with the second embodiment, the third embodiment of the present invention is provided with a buffer stop circuit 5, The step includes a first energy storage element 61 _ 4 to use a 7L 6 to enter a stop circuit. The buffer stop circuit 5 includes a buffer element 5i, the buffer-first power detecting switch 53" and a second center: the start switch 52, and the buffer element 51" is connected in series to the source debt test. Switch 54". The connection 5 Xuan circuit start switch 52", buffer element 5 Γ, and circuit start switch =
該馬達線圈4之連接端41，而串 步串聯於 啟動開雜之另1接地；亦及迴路 迴路啟動開關52，，選乐〇圖所不，若該 而該笛-φ、、s站 、路啟動開關52” . 4連接端42的下 性連接該連接於該馬達線圈 -電源細 使該迴路_„ 52，，^二,貞測« 之控制可The connecting end 41 of the motor coil 4, and the series step is connected in series to the grounding of the starting and opening; and the loop circuit starting switch 52, if the selection is not, if the flute-φ, s station, The circuit start switch 52". 4 the lower end of the connection end 42 is connected to the motor coil - the power supply fines the control of the circuit _ 52,, ^ 2, « test «
，使該馬達線圈4之1；? $子式開關M2形成導通 因外之—連接端41、&报屮 便該馬達電流可流動於該緩衝迴路 L %位’以 釋能；其中該馬達線圈丁該馬達電流之 開關-及該下臂電子式開: = 路啟動 停止電路5，，之迴路啟動„52 Γ_=，而該緩衝 及第二電源偵測開關54，,連詢I剩測開關53，， 進- ¥二職元件62。 關52，,係二：r(rrj之電路動作， 而22及一源極端切，，，·而該第一電 17 — 201117546 源领測_ 53，，為-NPN電晶體開關，其具有—集極端 53>1 .基極端532”及一射極端533” ；該迴路啟動開關 52”之及極力而52】’’供串聯該緩衝元件M，，，且該緩衝元件 51之广連接該馬達線圈*之連接端Μ ;該迴路啟動開 關52之閘極端522”連接該第—電源偵測開關分,之集極 端531” ’並共同電性連接該第二儲能元件62之—端二亥 迴路啟動開關52”之源極端523”接地；且該第—電源翻 開關53”之射極端533”亦接地；另外，該第一電源糊So that the motor coil 4 1; ? $ sub-type switch M2 is turned on - the connection end 41, & ... the motor current can flow in the buffer circuit L % bit ' to release energy; wherein the motor The coil of the motor current switch - and the lower arm electronically open: = the road start stop circuit 5, the circuit starts „52 Γ _=, and the buffer and the second power detection switch 54, Switch 53,, into - ¥ two-component 62. Off 52,, two: r (rr circuit action, and 22 and a source extreme cut,,, and the first electricity 17 - 201117546 source lead test _ 53 , is an -NPN transistor switch having a set terminal 53 > 1 . base terminal 532 ” and an emitter terminal 533 ′′; the circuit activates the switch 52 ′′ and the force 52 ′′ to connect the buffer element M, And the buffer element 51 is connected to the connection end of the motor coil*; the gate terminal 522" of the circuit start switch 52 is connected to the first power detecting switch, and the set terminal 531"' is electrically connected The source terminal 523" of the second energy storage element 62 of the second energy storage component 62 is grounded; and the first Source switch 53 is turned "The emitter terminal 533" also grounded; In addition, the first paste supply
關53”之基極端532”電性連接該控制元件31 控制端N3。 冉者’該下臂電子式開1 M2亦係為The base 53' of the 53" is electrically connected to the control terminal 31 and the control terminal N3. The latter's lower arm electronically open 1 M2 is also
channel)電晶體開關；且該第二電源偵測開 腦電晶體開關，其具有—集極端541 ”、一基極端Μ 及-射極端543，，；該第二電源偵測開關M，，之集極 54Γ，連接該下臂電子式開關奶之—閘極端，並共同電性 連接到該第m件62之—端；該第二電源偵測開關 54之基極ir而542連接該控制元件31之輸出控制端N2 ; 而該第二電源偵測開關54，，之射極端543”接地。Channel) a transistor switch; and the second power source detects an open brain transistor switch having a set terminal 541 ”, a base terminal - and an emitter terminal 543, and the second power detecting switch M, The collector 54Γ is connected to the gate terminal of the lower arm electronic switch milk, and is electrically connected to the end of the mth member 62; the base of the second power detecting switch 54 is connected to the control element The output control terminal N2 of 31; and the second power detecting switch 54, the emitter terminal 543" is grounded.
當該電壓源電供電正常時，該控制元件31之輸 出控制端N3致動該第-電源偵測開關53”導通接地，使 該迴路啟射 52，，斷路，辦，_祕置丨之各該電 子式開關Ml、M2、M3及M4受該控制元件31之控制而 父互導通’以便控制該馬達線圈4電流之流向。 當該電壓源vcc中斷時，該控制元件31之輸出控 制端N3未能再提供信號予該第1源偵測開關53，,及該 18 — 201117546 第二電源偵測開關54”，以致該二電源偵測開關53”及 54”形成斷路，此時，該第二儲能元件62釋放電能，致 動該迴路啟動開關52”及下臂電子式開關M2形成導通； 同時，該第一儲能元件61釋放電能，致動該二上臂電子 式開關Ml、M4形成關閉；且該下臂電子式開關M3因 不再接收該控制元件31之信號而關閉。藉此，該馬達電 流可流動於該緩衝迴路，並進行該馬達電流之釋能。 雖然本發明已利用上述較佳實施例揭示，然其並非 用以限定本發明，任何熟習此技藝者在不脫離本發明之精 神和範圍之内，相對上述實施例進行各種更動與修改仍屬 本發明所保護之技術範疇，因此本發明之保護範圍當視後 附之申請專利範圍所界定者為準。When the voltage source is powered normally, the output control terminal N3 of the control component 31 activates the first power detecting switch 53" to conduct grounding, so that the loop is turned on 52, and the circuit is broken, and the _ secret is set. The electronic switches M1, M2, M3 and M4 are controlled by the control element 31 and the parent is turned on to control the flow of current of the motor coil 4. When the voltage source vcc is interrupted, the output control terminal N3 of the control element 31 The first source detecting switch 53 is not provided, and the 18-201117546 second power detecting switch 54" is so that the two power detecting switches 53" and 54" form an open circuit. At this time, the first The second energy storage element 62 releases the electric energy, and the circuit start switch 52" and the lower arm electronic switch M2 are actuated to be turned on; meanwhile, the first energy storage element 61 releases the electric energy, and the two upper arm electronic switches Ml, M4 are actuated to form Closing; and the lower arm electronic switch M3 is turned off because it no longer receives the signal of the control element 31. Thereby, the motor current can flow to the buffer circuit and perform the release of the motor current. Although the invention has been utilized The above preferred embodiment is disclosed However, it is not intended to limit the present invention, and various modifications and changes to the above-described embodiments are still within the technical scope of the present invention without departing from the spirit and scope of the present invention. The scope of protection is subject to the definition of the scope of the patent application attached.
19 — 201117546 【圖式簡單說明】 第1圖：習知風扇系統及其停止控制電路的電路連接 示意圖。 第2圖：本發明第一實施例之風扇系統及其停止控制 電路之電路示意圖。 第3圖：本發明第一實施例之缓衝停止電路未運作之 電路示意圖。 第4圖：本發明第一實施例之緩衝停止電路進行運作 之電路示意圖。 第5圖：本發明第二實施例之風扇系統及其停止控制 電路之電路示意圖。 第6圖：本發明第三實施例之風扇系統及其停止控制 電路之電路示意圖。 【主要元件符號說明】 〔本發明〕 1 驅動裝置 11 第一臂開關組 111 第一 串聯連接點 12 第二臂開關組 121 第二 串聯連接點 2 轉動停止電路 3 控制單元 31 控制元件 32 PWM轉換電路 33 感應元件 4 馬達線圈 201117546 * 41 連接端 - 5 緩衝停止電路 51 緩衝元件 521汲極端 523源極端 531汲極端 ' 533源極端 ' 5’ 缓衝停止電路 φ 51’緩衝元件 521’汲極端 523’源極端 5” 缓衝停止電路 51” 缓衝元件 52Γ汲極端 523”源極端 53Γ集極端 • 533”射極端 541”集極端 543”射極端 6 儲能單元 . 61第一儲能元件19 — 201117546 [Simple description of the diagram] Figure 1: Schematic diagram of the circuit connection of the conventional fan system and its stop control circuit. Fig. 2 is a circuit diagram showing a fan system and a stop control circuit thereof according to a first embodiment of the present invention. Fig. 3 is a circuit diagram showing the operation of the buffer stop circuit of the first embodiment of the present invention. Fig. 4 is a circuit diagram showing the operation of the buffer stop circuit of the first embodiment of the present invention. Fig. 5 is a circuit diagram showing a fan system and a stop control circuit thereof according to a second embodiment of the present invention. Fig. 6 is a circuit diagram showing a fan system and a stop control circuit thereof according to a third embodiment of the present invention. [Main component symbol description] [Invention] 1 Drive device 11 First arm switch group 111 First series connection point 12 Second arm switch group 121 Second series connection point 2 Rotation stop circuit 3 Control unit 31 Control element 32 PWM conversion Circuit 33 Inductive component 4 Motor coil 201117546 * 41 Connection - 5 Buffer stop circuit 51 Buffer element 521 汲 Extreme 523 Source terminal 531 汲 Extreme ' 533 Source terminal ' 5 ' Buffer stop circuit φ 51 'Buffer element 521 '汲 Extreme 523 'Source Extreme 5' Buffer Stop Circuit 51" Buffer Element 52 Γ汲 Extreme 523" Source Extreme 53 极端 Extreme • 533" Shooting Extreme 541" Set Extreme 543" Shooting Extreme 6 Energy Storage Unit. 61 First Energy Storage Element
Ml電子式開關 M3電子式開關 M5電子式開關 M7電子式開關 42 連接端 52 迴路啟動開關 522閘極端 53 電源偵測開關 5 3 2閘極端 54 防逆流二極體 52’迴路啟動開關 522’閘極端 52” 迴路啟動開關 522”閘極端 53”第一電源偵測開關 532”基極端 54”第二電源偵測開關 542”基極端 62 第二儲能元件 M2電子式開關 M4電子式開關 M6電子式開關 M8電子式開關 —21 201117546 pi 輸出控制端 N1 輸出控制端 N3 輸出控制端 〔習知〕 91 橋式驅動器 93 儲能電容 95 馬達線圈 M91電子式開關 M93電子式開關 M95電子式開關 M97電子式開關 P2 輸出控制端 N2輸出控制端 92 控制單元 94 即時停止電路 M92電子式開關 M94電子式開關 M96電子式開關 M98電子式開關Ml electronic switch M3 electronic switch M5 electronic switch M7 electronic switch 42 connection terminal 52 circuit start switch 522 gate terminal 53 power detection switch 5 3 2 gate terminal 54 anti-countercurrent diode 52' circuit start switch 522' gate Extreme 52" loop start switch 522" gate terminal 53" first power detecting switch 532" base terminal 54" second power detecting switch 542" base terminal 62 second energy storage element M2 electronic switch M4 electronic switch M6 electronic Switch M8 electronic switch - 21 201117546 pi output control terminal N1 output control terminal N3 output control terminal [known] 91 bridge driver 93 storage capacitor 95 motor coil M91 electronic switch M93 electronic switch M95 electronic switch M97 electronic Type switch P2 output control terminal N2 output control terminal 92 control unit 94 instant stop circuit M92 electronic switch M94 electronic switch M96 electronic switch M98 electronic switch
—22 —-twenty two -