TWI467911B - Fan system and stop control circuit thereof - Google Patents
Fan system and stop control circuit thereof Download PDFInfo
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Description
本發明係關於一種風扇系統及其停止控制電路，尤其是一種利用一緩衝停止電路控制該風扇系統和緩的停止運轉之風扇系統之停止控制電路。The present invention relates to a fan system and its stop control circuit, and more particularly to a stop control circuit for controlling a fan system and a slow stop operation of the fan system by means of a buffer stop circuit.
近年來，利用數位微控制器(Micro-Controller Unit,MCU)結合電力電子開關驅動電路，進行電子產品之設計，已是目前業界常用的技術。然而，在操作該電子產品時，該數位微控制器及該電力電子開關會因為操作在高頻而導致該電子產品產生大量熱量；因此，該電子產品之散熱需求將成為相當重要的設計課題。In recent years, the use of digital-based microcontrollers (MCUs) combined with power electronic switch drive circuits for electronic product design has become a common technology in the industry. However, when the electronic product is operated, the digital microcontroller and the power electronic switch may generate a large amount of heat due to the high frequency operation; therefore, the heat dissipation requirement of the electronic product will become a very important design issue.
目前，較常見的散熱方式係以風扇系統之運轉進行該電子產品之驅風散熱，然而基於風扇控制及使用者安全操作之考量，該風扇系統通常會結合一停轉電路，以便在電源斷電時，停止該風扇系統之運轉，以確保風扇控制之精確性及使用者之操作安全。At present, the more common heat dissipation method is to drive the heat of the electronic product by the operation of the fan system. However, based on the fan control and the safe operation of the user, the fan system usually combines a stall circuit to power off the power supply. When the fan system is stopped, the accuracy of the fan control and the safety of the user are ensured.
如第1圖所示，其揭示一種習用風扇系統及其停止控制電路，包含一橋式驅動器91、一控制單元92、一儲能電容93、一即時停止電路94及一馬達線圈95。其中一電壓源VCC連接至該橋式驅動器91、控制單元92、儲能電容93及該即時停止電路94，以提供上述該等構件之電源所需。該橋式驅動器91具有二上橋電子式開關M91、M94及二下橋電子式開關M92、M93；該即時停止電路94具有二電子式開關M95、M96，分別連接並控制該橋式驅動器91之二下橋電子式開關M92、M93；該控制單元92具有四個控制輸出端分別連接於該即時停止電路94之二電子式開關M95、M96及另二電子式開關M97、M98；該馬達線圈95之一端連接在該橋式驅動器91之上橋電子式開關M91與下橋電子式開關M93相互連接之連接處；而另一端連接在該橋式驅動器91之另一上橋電子式開關M94與另一下橋電子式開關M92相互連接之連接處。As shown in FIG. 1, a conventional fan system and its stop control circuit are disclosed, including a bridge driver 91, a control unit 92, a storage capacitor 93, an immediate stop circuit 94, and a motor coil 95. One of the voltage sources VCC is coupled to the bridge driver 91, the control unit 92, the storage capacitor 93, and the immediate stop circuit 94 to provide the power requirements of the components described above. The bridge driver 91 has two upper bridge electronic switches M91 and M94 and two lower bridge electronic switches M92 and M93. The instant stop circuit 94 has two electronic switches M95 and M96 for respectively connecting and controlling the bridge driver 91. Two lower bridge electronic switches M92, M93; the control unit 92 has four control outputs respectively connected to the instant stop circuit 94 two electronic switches M95, M96 and two other electronic switches M97, M98; the motor coil 95 One end is connected to the bridge driver 91 above the bridge electronic switch M91 and the lower bridge electronic switch M93 are connected to each other; the other end is connected to the bridge driver 91 the other upper bridge electronic switch M94 and the other The bridge electronic switch M92 is connected to each other.
當該電壓源VCC對該風扇系統正常供電時，該控制單元92自其控制輸出端產生一組控制信號，控制該橋式驅動器91及該即時停止電路94動作，使該橋式驅動器91之二上橋電子式開關M91、M94及二下橋電子式開關M92、M93形成交互導通，以控制該馬達線圈95上的電流形成交變電流；例如：該電子式開關M91及M92形成導通，而該另二電子式開關M93及M94形成開路，以便該電流於該馬達線圈順向流動；反之，則控制該電流反向流動該馬達線圈。另外，該儲能電容93持續進行充電直至預定電量。When the voltage source VCC normally supplies power to the fan system, the control unit 92 generates a set of control signals from the control output thereof, and controls the bridge driver 91 and the immediate stop circuit 94 to operate, so that the bridge driver 91 The upper bridge electronic switch M91, M94 and the two lower bridge electronic switches M92, M93 form an alternating conduction to control the current on the motor coil 95 to form an alternating current; for example, the electronic switches M91 and M92 form a conduction, and the The other two electronic switches M93 and M94 form an open circuit so that the current flows in the motor coil; otherwise, the current is controlled to flow backward in the motor coil. In addition, the storage capacitor 93 continues to be charged until a predetermined amount of power is supplied.
當該電壓源VCC中斷時，該控制單元92不再提供控制信號子該橋式驅動器91及該即時停止電路94動作，使該即時停止電路94之二電子式開關M95、M96形成開路；同時，該儲能電容93放電，由於該橋式驅動器91之二下橋電子式開關M92、M93之各導通控制端(如圖1之閘極端)係連接到該儲能電容93，進而使該橋式驅動器91之二下橋電子式開關M92、M93得以因應該儲能電容93之供電而導通，促使該馬達線圈95之二端電位相同，以使該風扇系統即時停止運轉。When the voltage source VCC is interrupted, the control unit 92 no longer provides a control signal for the bridge driver 91 and the immediate stop circuit 94 to operate, so that the two electronic switches M95 and M96 of the immediate stop circuit 94 form an open circuit; The storage capacitor 93 is discharged, and the conduction control terminals (such as the gate terminal of FIG. 1) of the two lower bridge electronic switches M92 and M93 of the bridge driver 91 are connected to the storage capacitor 93, thereby making the bridge The second bridge electronic switches M92 and M93 of the driver 91 are turned on according to the power supply of the storage capacitor 93, so that the potentials of the two ends of the motor coil 95 are the same, so that the fan system stops immediately.
然而，一般而言，上述習用具有以下缺點，例如：由於在電壓源VCC正常供電時，該馬達線圈95之電流持續保持流動，當電壓源VCC中斷時，因該馬達線圈95之二端之電位瞬間形成等電位，亦即使流動該馬達線圈95之電流瞬間降為零，以致在此一變化瞬間將在該馬達線圈95上建立極大的感應電動勢，造成電磁干擾；相對的，由於該馬達線圈95之二端同時接地，因此使建立在該馬達線圈95之感應電動勢亦瞬間降為零，導致該風扇系統停止瞬間產生極大推斥應力，造成馬達振動及噪音加劇，進而降低風扇系統周邊電路之運作穩定性及降低風扇系統操作壽命。基於上述原因，有必要進一步改良上述習用風扇系統及其停止控制電路。However, in general, the above-mentioned conventional disadvantages have the following disadvantages, for example, because the current of the motor coil 95 continues to flow when the voltage source VCC is normally supplied, and the potential of the two ends of the motor coil 95 is interrupted when the voltage source VCC is interrupted. The equipotential is instantaneously formed, and even if the current flowing through the motor coil 95 instantaneously drops to zero, a large induced electromotive force is established on the motor coil 95 at this moment of change, causing electromagnetic interference; in contrast, due to the motor coil 95 The two ends are grounded at the same time, so that the induced electromotive force established in the motor coil 95 is instantaneously reduced to zero, which causes the fan system to stop generating a large repulsion stress instantaneously, causing the motor vibration and noise to be intensified, thereby reducing the operation of the peripheral circuit of the fan system. Stability and reduced fan system operating life. For the above reasons, it is necessary to further improve the above-described conventional fan system and its stop control circuit.
本發明目的係針對上述習知風扇系統及其停止控制電路的缺點進行改良，以提供一種可增加風扇系統周邊電路之運作穩定性及提高風扇系統操作壽命的風扇系統及其停止控制電路。The object of the present invention is to improve the shortcomings of the above-mentioned conventional fan system and its stop control circuit, to provide a fan system and a stop control circuit thereof which can increase the operational stability of the peripheral circuit of the fan system and improve the operational life of the fan system.
本發明次一目的係提供一種風扇系統及其停止控制電路，使停止控制電路動作時，可降低馬達振動及噪音。A second object of the present invention is to provide a fan system and a stop control circuit thereof that can reduce motor vibration and noise when the stop control circuit operates.
根據本發明風扇系統，係包含：一馬達、一儲能單元、一驅動裝置及一緩衝停止電路。該馬達具有一馬達線圈，該馬達線圈具有二連接端；該儲能單元用以進行電能之儲存，並在一提供該風扇系統之電壓源中斷時，釋放電能以持續該馬達停止轉動之動作；該驅動裝置電性連接該馬達線圈之二連接端，以控制流經該馬達線圈之電流流向；該緩衝停止電路電性連接該馬達線圈；其中，當供應該風扇系統之電壓源供電中斷時，啟動該緩衝停止電路，使該馬達線圈二連接端形成一電壓差，並對該緩衝停止電路釋放能量，進而使該風扇系統在一可控停止時間內和緩的停止運轉。The fan system according to the present invention comprises: a motor, an energy storage unit, a driving device and a buffer stopping circuit. The motor has a motor coil, and the motor coil has two connection ends; the energy storage unit is configured to store electrical energy, and release an electric energy to continue the operation of stopping the rotation of the motor when the voltage source of the fan system is interrupted; The driving device is electrically connected to the two connecting ends of the motor coil to control the current flow through the motor coil; the buffer stopping circuit is electrically connected to the motor coil; wherein when the voltage source supplying the fan system is interrupted, The buffer stop circuit is activated to form a voltage difference between the two ends of the motor coil, and the energy is released to the buffer stop circuit, thereby causing the fan system to stop slowly during a controllable stop time.
根據本發明風扇系統之停止控制電路，係包含一緩衝停止電路，當供應該風扇系統之一電壓源供電中斷時，啟動該緩衝停止電路，使一馬達線圈二連接端形成一電壓差，並對該緩衝停止電路釋放能量，進而使該風扇系統在一可控停止時間內和緩的停止運轉。The stop control circuit of the fan system according to the present invention includes a buffer stop circuit. When a power supply to a voltage source of the fan system is interrupted, the buffer stop circuit is activated to form a voltage difference between the two ends of a motor coil, and The buffer stop circuit releases energy, thereby allowing the fan system to be slowly stopped during a controlled stop time.
為讓本發明之上述及其他目的、特徵及優點能更明顯易懂，下文特舉本發明之較佳實施例，並配合所附圖式，作詳細說明如下：The above and other objects, features and advantages of the present invention will become more <RTIgt;
請參照第2圖所示，其揭示本發明第一實施例之風扇系統及其停止控制電路，其中該風扇系統包含一驅動裝置1、一轉動停止電路2、一控制單元3、一馬達及其線圈4、一緩衝停止電路5及一儲能單元6。其中該驅動裝置1、控制單元3、儲能單元6及該轉動停止電路2共同電性連接至一電壓源VCC，以便該電壓源VCC可提供上述該等構件之電源所需；再者，該馬達線圈4連接於該驅動裝置1，且該緩衝停止電路5較佳係並聯連接於該馬達線圈4。其中該儲能單元6用以進行電能之儲存，並在該電壓源VCC中斷時，釋放電能以持續該風扇系統之該馬達停止轉動之動作，且該儲能單元6電性連接至該驅動裝置1及轉動停止電路2。再者，該轉動停止電路2及該緩衝停止電路5構成本發明該風扇系統之停止控制電路。Referring to FIG. 2, a fan system and a stop control circuit thereof according to a first embodiment of the present invention are disclosed, wherein the fan system includes a driving device 1, a rotation stopping circuit 2, a control unit 3, a motor and The coil 4, a buffer stop circuit 5 and an energy storage unit 6. The driving device 1, the control unit 3, the energy storage unit 6, and the rotation stopping circuit 2 are electrically connected to a voltage source VCC, so that the voltage source VCC can supply the power of the components; The motor coil 4 is connected to the driving device 1, and the buffer stopping circuit 5 is preferably connected in parallel to the motor coil 4. The energy storage unit 6 is configured to store electrical energy, and when the voltage source VCC is interrupted, release power to continue the operation of the motor of the fan system to stop rotating, and the energy storage unit 6 is electrically connected to the driving device. 1 and turn the stop circuit 2. Further, the rotation stop circuit 2 and the buffer stop circuit 5 constitute a stop control circuit of the fan system of the present invention.
該驅動裝置1具有數個電子式開關，其設計可選擇構成一全橋式驅動裝置或一半橋式驅動裝置，較佳地，如第2圖所示，本發明之驅動裝置1係由四個電子式開關M1~M4組成，其中該二電子式開關M1及M3串聯形成一第一臂開關組11，且具有一第一串聯連接點111；而該另二電子式開關M2及M4串聯形成一第二臂開關組12，且具有一第二串聯連接點121，並且該二臂開關組11及12共同形成全橋式之該驅動裝置1。再者，該二電子式開關M1及M4形成一上橋開關組；而另該二電子式開關M2及M3形成一下橋開關組。該驅動裝置1之四個電子式開關M1~M4係分別選自電晶體開關。另外，該驅動裝置1另設有二電子式開關M7、M8，該二電子式開關M7、M8分別連接該上橋開關組之二電子式開關M1及M4。The driving device 1 has a plurality of electronic switches, which are designed to form a full bridge driving device or a half bridge driving device. Preferably, as shown in FIG. 2, the driving device 1 of the present invention is composed of four. The electronic switches M1 and M4 are formed in series, wherein the two electronic switches M1 and M3 are connected in series to form a first arm switch group 11 and have a first series connection point 111; and the other two electronic switches M2 and M4 are connected in series to form a The second arm switch group 12 has a second series connection point 121, and the two arm switch groups 11 and 12 together form a full bridge type of drive device 1. Furthermore, the two electronic switches M1 and M4 form an upper bridge switch group; and the other two electronic switches M2 and M3 form a lower bridge switch group. The four electronic switches M1 to M4 of the driving device 1 are each selected from a transistor switch. In addition, the driving device 1 is further provided with two electronic switches M7 and M8, and the two electronic switches M7 and M8 are respectively connected to the two electronic switches M1 and M4 of the upper bridge switch group.
該轉動停止電路2配合該驅動裝置1下橋開關組之設計，提供二個電子式開關M5、M6，各該電子式開關M5、M6之輸出端(如第2圖所示之電晶體之集極端)並聯連接到該儲能單元6，並個別連接到該驅動裝置1下橋開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之二個電子式開關M5、M6係分別選自電晶體開關。The rotation stopping circuit 2 cooperates with the design of the lower bridge switch group of the driving device 1, and provides two electronic switches M5 and M6, and the output ends of the electronic switches M5 and M6 (such as the set of transistors shown in FIG. 2) The terminals are connected in parallel to the energy storage unit 6 and are individually connected to the input terminals of the electronic switches M2 and M3 of the lower bridge switch group of the driving device 1 (such as the gate terminal of the transistor shown in FIG. 2). The two electronic switches M5 and M6 of the rotation stop circuit 2 are respectively selected from the transistor switches.
該控制單元3包含一控制元件31、一PWM轉換電路32及一感應元件33(如霍爾感測器，Hall sensor)。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接收、轉換及輸出；該PWM轉換電路32連接到該控制元件31，以接收並轉換該PWM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33連接到該控制元件31，並接收該感應元件33之控制信號，以便該控制元件31可判斷本發明該風扇系統之馬達的磁極位置。其中該控制元件31具有四個輸出控制端P1、P2、N1、N2，其分別連接該轉動停止電路2之二個電子式開關M5、M6及該驅動裝置1之另二電子式開關M7、M8之輸入端(如第2圖所示之電晶體之基極端)，且該四個電子式開關M5、M6、M7、M8之輸出端(如第2圖所示之電晶體之集極端)另分別連接該電子式開關M1、M2、M3及M4，該控制元件31輸出一組控制信號致動該四個電子式開關M5、M6、M7、M8形成導通或關閉狀態，進而控制該驅動裝置1及轉動停止電路2之運作。The control unit 3 includes a control component 31, a PWM conversion circuit 32, and an inductive component 33 (such as a Hall sensor). The control component 31 can perform the receiving, converting and outputting of the motor control signal of the fan system of the present invention; the PWM conversion circuit 32 is connected to the control component 31 to receive and convert the control signal of the PWM conversion circuit 32, thereby controlling The motor speed of the fan system of the present invention; the sensing element 33 is coupled to the control element 31 and receives a control signal from the sensing element 33 such that the control element 31 can determine the magnetic pole position of the motor of the fan system of the present invention. The control element 31 has four output control terminals P1, P2, N1, N2, which are respectively connected to the two electronic switches M5, M6 of the rotation stop circuit 2 and the other two electronic switches M7, M8 of the drive device 1. The input end (such as the base of the transistor shown in Figure 2), and the output terminals of the four electronic switches M5, M6, M7, M8 (such as the collector of the transistor shown in Figure 2) The electronic switches M1, M2, M3, and M4 are respectively connected, and the control component 31 outputs a set of control signals to actuate the four electronic switches M5, M6, M7, and M8 to be in an on or off state, thereby controlling the driving device 1 And the operation of the rotation stop circuit 2.
該馬達線圈4配合驅動裝置1的型態可設計成單相馬達線圈、兩相馬達線圈或三相馬達線圈，於此本發明較佳實施例係以單相馬達線圈的型態進行電路連接樣態之說明如下。本發明單相的該馬達線圈4具有二連接端41及42，分別連接到該驅動裝置1之第一串聯連接點111及第二串聯連接點121，且如第2圖所示，該驅動裝置1與該馬達線圈4形成全橋式連接電路架構，藉由控制該驅動裝置1之各該電子式開關M1、M2、M3及M4之交互導通，以便控制該馬達線圈4電流之流向。The motor coil 4 can be designed as a single-phase motor coil, a two-phase motor coil or a three-phase motor coil in combination with the driving device 1. In the preferred embodiment of the invention, the circuit connection is performed in the form of a single-phase motor coil. The description of the state is as follows. The single-phase motor coil 4 of the present invention has two connecting ends 41 and 42 connected to the first series connection point 111 and the second series connection point 121 of the driving device 1, respectively, and as shown in FIG. 2, the driving device 1 and the motor coil 4 form a full bridge connection circuit structure, by controlling the mutual conduction of the electronic switches M1, M2, M3 and M4 of the driving device 1 to control the current flow of the motor coil 4.
該緩衝停止電路5包含一緩衝元件51、一迴路啟動開關52及一電源偵測開關53。該緩衝元件51用以吸收電量，因此較佳選自一緩衝電阻，且為避免負載效應，該緩衝電阻之電阻值較佳係選自小額定值之電阻值，例如選擇不大於1歐姆電阻值之緩衝元件51。該迴路啟動開關52係串聯至該緩衝元件51，且串聯之該緩衝元件51及該迴路啟動開關52係並聯於該馬達線圈4之二連接端41及42，如此，該馬達線圈4及該緩衝停止電路5之緩衝元件51及迴路啟動開關52共同形成一緩衝迴路，且該電源偵測開關53電性連接該迴路啟動開關52，藉由送出一控制信號至該迴路啟動開關52，以控制該緩衝迴路之作動。另外，該緩衝元件51若選擇為該電阻時，該緩衝電阻之電阻值與該馬達線圈4之一電感值可決定一停轉緩衝期，本發明該風扇系統之馬達從運轉到停止之時間可藉由該停轉緩衝期決定。The buffer stop circuit 5 includes a buffer component 51, a loop start switch 52, and a power detecting switch 53. The buffering component 51 is configured to absorb electric energy, and therefore is preferably selected from a buffer resistor, and in order to avoid a load effect, the resistance value of the buffering resistor is preferably selected from a resistance value of a small rated value, for example, a resistance value not greater than 1 ohm is selected. The buffer element 51. The circuit start switch 52 is connected in series to the buffer element 51, and the buffer element 51 and the circuit start switch 52 connected in series are connected in parallel to the two connection ends 41 and 42 of the motor coil 4, such that the motor coil 4 and the buffer The buffer component 51 of the stop circuit 5 and the loop start switch 52 together form a buffer circuit, and the power detecting switch 53 is electrically connected to the loop start switch 52, and sends a control signal to the loop start switch 52 to control the The operation of the buffer circuit. In addition, when the buffer element 51 is selected as the resistor, the resistance value of the buffer resistor and the inductance value of the motor coil 4 may determine a stall buffer period, and the motor of the fan system of the present invention may be operated from the time of stopping to the stop. Determined by the stall period.
更進一步言之，該緩衝停止電路5之迴路啟動開關52及電源偵測開關53較佳係選自一電晶體開關，以下本發明較佳實施例將以該電晶體開關為例進行電路連接及動作之說明如下。該迴路啟動開關52具有一汲極端521、一閘極端522及一源極端523；同樣的，該電源偵測開關53具有一汲極端531、一閘極端532及一源極端533。該迴路啟動開關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。藉由上述緩衝停止電路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。Furthermore, the loop start switch 52 and the power detecting switch 53 of the buffer stop circuit 5 are preferably selected from a transistor switch. The preferred embodiment of the present invention will use the transistor switch as an example for circuit connection and The description of the action is as follows. The circuit start switch 52 has a 汲 terminal 521, a gate terminal 522 and a source terminal 523. Similarly, the power detecting switch 53 has a 汲 terminal 531, a gate terminal 532 and a source terminal 533. The 汲 terminal 521 of the loop start switch 52 is connected to the snubber element 51 in series, and one end of the snubber element 51 is connected to the connection end 41 of the motor coil 4; the gate terminal 522 of the loop 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 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, when the motor of the fan system is stopped, the motor current can be allowed to flow counterclockwise to the buffer circuit.
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，串聯連接在該緩衝迴路，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。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. The current generated by the motor coil 4 and flowing clockwise is blocked to prevent the circuit start switch 52 from being damaged by the impact of a high value current.
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M1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M1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。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 and 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.
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，使該緩衝迴路形成開路，而不會影響該馬達線圈4之電流正常操作。Referring to FIG. 2 and FIG. 3, when the voltage source VCC is normally powered by the fan system, the gate terminal 532 of the power detecting switch 53 receives the voltage source VCC and is turned on to make the pole 531 and the source terminal The potential of 533 is zero. At this time, the gate terminal 522 of the circuit start switch 52 fails to conduct due to receiving zero voltage, so that the buffer circuit forms an open circuit without affecting the normal operation of the current of the motor coil 4.
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。When the voltage source VCC is interrupted, the control unit 3 no longer provides a control signal to the rotation stop circuit 2; meanwhile, 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.
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，並藉由該緩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控停止時間內和緩的停止運轉，而不會發生如習知風扇系統及其停止控制電路因控制馬達即時停止所衍生之缺點。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 the buffer circuit absorbs the current. The energy of the motor coil 4 is such that the motor of the fan system of the present invention is slowly stopped during a controlled stop time without the disadvantages of conventional fan systems and their stop control circuits being derived from the immediate stop of the control motor.
另外，本發明之風扇系統斷電時雖無法即時停止轉動，但本發明之風扇系統可藉由緩衝元件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)，進而在最短時間內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1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停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。In addition, although the fan system of the present invention cannot stop rotating 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 stopping time (ie, the time of the stalling period). In addition, the fan system of the present invention can be controlled in a short period of time to slow down the operation. 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. 1, but also prevent the fan system from being installed. When the control mode is stopped and the natural mode operation is stopped, the stop time cannot be controlled, and the person is mistakenly touched and injured.
為更進一步清楚界定該停轉緩衝期，以下以一實際計算例作為說明。若該緩衝元件51選擇自具有1歐姆電阻值之緩衝電阻，且該馬達電感值為200微亨利(uH)，則其電氣時間常數t 可由下式計算：In order to further clearly define the stall buffer period, the following is explained by an actual calculation example. If the buffer element 51 is selected from a snubber resistor having a resistance value of 1 ohm and the motor inductance value is 200 microhenry (uH), its electrical time constant t can be calculated by:
依據電路原理，由電感L -電阻R 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t 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L -電阻R 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。According to the circuit principle, the charge and discharge circuit formed by the inductor L - resistor R , 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 t , therefore, the present invention uses the above inductor The resistance parameter is designed to have a stall period of 1 millisecond, that is, the control of the loop formed by the inductor L - resistor R causes the motor of the present invention to stop rotating after a power interruption of 1 millisecond. Similarly, the present invention can adjust the stall period by the selection of the above-mentioned inductor-resistance value.
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5’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41，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、該緩衝元件51’、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M1、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。Referring to FIG. 5, a fan system and a stop control circuit thereof according to a second embodiment of the present invention are disclosed. Compared with the first embodiment, the second embodiment of the present invention can omit the rotation stop circuit of the first embodiment. The setting of 2 is provided with a buffer stop circuit 5' which is connected in series to the motor coil 4. More specifically, the buffer stop circuit 5' includes a buffer element 51' and a loop start switch 52'. The buffering element 51' is connected in series to the loop start switch 52', and one end of the series buffering element 51' and the loop start switch 52' is further connected in series to the connecting end 41 of the motor coil 4, and the buffering element 51' is connected in series. And the other end of 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 potent crystal, the pole is extremely hot. One end of the energy storage unit 6 is connected; 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, the upper arm is turned off when the power is turned off. The electronic switch M4 can be controlled to conduct. Thus, the motor coil 4, the buffer element 51', the circuit start switch 52' and the upper arm electronic switch M4 together form a buffer circuit, and when the motor of the fan system stops operating due to power failure, other electronic switches M1, M2, M3, M7, M8 form a close, but the loop start switch 52' and the upper arm electronic switch M4 are turned on, so that the two connection ends 41, 42 of the motor coil 4 form an unequal potential for the motor current It can flow in the buffer circuit and perform the release of the motor current.
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’電性連接該電壓源VCC，但該閘極端522’與該儲能單元6電性隔離(即該儲能單元6無法對該迴路啟動開關52’之閘極端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(P-channel)電晶體開關，其閘極端亦電性連接該迴路啟動開關52’之閘極端522’。Further explaining the circuit operation of the second embodiment, the loop start switch 52' is a P-channel transistor switch having a drain terminal 521', a gate terminal 522' and a source terminal 523'. The looper terminal 52' has a top end 521' for connecting the buffering element 51', and one end of the buffering element 51' is connected to the connecting end 41 of the motor coil 4; the loop actuating switch 52' is connected to the gate terminal 522'. The voltage source VCC is connected, but the gate terminal 522' is electrically isolated from the energy storage unit 6 (ie, the energy storage unit 6 cannot supply power to the gate terminal 522' of the loop start switch 52'); and the loop start switch 52 The 'source source 523' is connected to one end of the energy storage unit 6. In addition, the upper arm electronic switch M4 is also a P-channel transistor switch, and its gate terminal is also electrically connected to the gate terminal 522' of the circuit start switch 52'.
當該電壓源VCC供電正常時，該迴路啟動開關52’之閘極端522’及該源極端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一臨界電壓，以致該迴路啟動開關52’形成關閉狀態，此時，該驅動裝置1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。When the voltage source VCC is powered normally, the gate terminal 522' of the loop start switch 52' and the source terminal 523' receive the voltage of the voltage source VCC at the same time, so that the voltage difference between the two ends 522' and 523' is zero. It is smaller than a threshold voltage of the transistor switch, so that the circuit start switch 52' forms a closed state. At this time, the electronic switches M1, M2, M3 and M4 of the driving device 1 are controlled by the control element 31 to interact. It is turned on to control the flow of current of the motor coil 4.
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。When the voltage source VCC is interrupted, the energy storage unit 6 releases the electric energy, so that the voltage of the source terminal 523' of the circuit start switch 52' 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 discharges the motor current.
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，本發明第三實施例設有一緩衝停止電路5”，且該儲能單元6進一步包含一第一儲能元件61及一第二儲能元件62。該緩衝停止電路5”係串聯連接該馬達線圈4。更詳言之，該緩衝停止電路5”包含一緩衝元件51”、一迴路啟動開關52”、一第一電源偵測開關53”及一第二電源偵測開關54”。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41，而串聯的緩衝元件51”及迴路啟動開關52”之另一端接地；亦即，如第6圖所示，若該迴路啟動開關52”選自一場效電晶體時，其源極端接地；該第一電源偵測開關53”電性連接該迴路啟動開關52”；而該第二電源偵測開關54”電性連接該連接於該馬達線圈4連接端42的下臂電子式開關M2。在斷電時，藉由該第一電源偵測開關53”及該第二電源偵測開關54”之控制可使該迴路啟動開關52”及該下臂電子式開關M2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；其中該馬達線圈4、該緩衝元件51”、該迴路啟動開關52”及該下臂電子式開關M2共同形成一緩衝迴路。再者，該驅動裝置1連接該第一儲能元件61，而該緩衝停止電路5”之迴路啟動開關52”、第一電源偵測開關53”及第二電源偵測開關54”連接該第二儲能元件62。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", and the storage is provided. The energy unit 6 further includes a first energy storage element 61 and a second energy storage element 62. The buffer stop circuit 5" is connected in series to the motor coil 4. More specifically, the buffer stop circuit 5" includes a buffer component 51", a loop enable switch 52", a first power detection switch 53" and a second power detection switch 54". The buffer component 51" The loop start switch 52" is connected in series, and one end of the series buffer element 51" and the loop start switch 52" is further connected in series to the connection end 41 of the motor coil 4, and the series buffer element 51" and the loop start switch 52 are connected in series. The other end is grounded; that is, as shown in FIG. 6, if the loop start switch 52" is selected from a potent transistor, the source terminal is grounded; the first power detecting switch 53" is electrically connected to the loop. The second power detecting switch 54" is electrically connected to the lower arm electronic switch M2 connected to the connecting end 42 of the motor coil 4. When the power is turned off, the first power detecting switch is The control of the 53" and the second power detecting switch 54" enables the loop start switch 52" and the lower arm electronic switch M2 to be turned on, so that the two connecting ends 41, 42 of the motor coil 4 form an unequal potential. So that the motor current can flow to the buffer Passage, and discharging currents of the motor; wherein the motor coil 4, the damping element 51 ", the start switch circuit 52 'and the lower arm electronic switch M2 together form a buffer circuit. Furthermore, the driving device 1 is connected to the first energy storage component 61, and the loop start switch 52", the first power detecting switch 53" and the second power detecting switch 54" of the buffer stopping circuit 5" are connected to the first Two energy storage elements 62.
進一步說明第三實施例之電路動作，該迴路啟動開關52”係為一N通道(N-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”；而該第一電源偵測開關53”為一NPN電晶體開關，其具有一集極端531”、一基極端532”及一射極端533”；該迴路啟動開關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”連接該第一電源偵測開關53”之集極端531”，並共同電性連接該第二儲能元件62之一端；該迴路啟動開關52”之源極端523”接地；且該第一電源偵測開關53”之射極端533”亦接地；另外，該第一電源偵測開關53”之基極端532”電性連接該控制元件31之另一輸出控制端N3。Further explaining the circuit operation of the third embodiment, the loop start switch 52" is an N-channel transistor switch having a 汲 extreme 521", a gate terminal 522" and a source terminal 523"; The first power detecting switch 53" is an NPN transistor switch having an episode 531", a base terminal 532" and an emitter terminal 533"; the loop start switch 52" is connected to the pole 521" for series connection The buffering member 51", and one end of the buffering member 51" is connected to the connecting end 41 of the motor coil 4; the gate terminal 522" of the loop starting switch 52" is connected to the collector terminal 531 of the first power detecting switch 53" And electrically connecting one end of the second energy storage component 62; the source terminal 523" of the loop start switch 52" is grounded; and the emitter terminal 533" of the first power detecting switch 53" is also grounded; The base terminal 532" of the first power detecting switch 53" is electrically connected to the other output control terminal N3 of the control element 31.
再者，該下臂電子式開關M2亦係為一N通道(N-channel)電晶體開關；且該第二電源偵測開關54”亦為一NPN電晶體開關，其具有一集極端541”、一基極端542”及一射極端543”；該第二電源偵測開關54”之集極端541”連接該下臂電子式開關M2之一閘極端，並共同電性連接到該第二儲能元件62之一端；該第二電源偵測開關54”之基極端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。Furthermore, the lower arm electronic switch M2 is also an N-channel transistor switch; and the second power detecting switch 54" is also an NPN transistor switch having an episode 541" a base terminal 542" and a first pole 543"; the set terminal 541" of the second power detecting switch 54" is connected to a gate terminal of the lower arm electronic switch M2, and is electrically connected to the second storage One end of the energy component 62; the base terminal 542" of the second power detecting switch 54" is connected to the output control terminal N2 of the control component 31; and the emitter terminal 543" of the second power detecting switch 54" is grounded.
當該電壓源VCC供電正常時，該控制元件31之輸出控制端N3致動該第一電源偵測開關53”導通接地，使該迴路啟動開關52”斷路，此時，該驅動裝置1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。When the voltage source VCC is powered normally, the output control terminal N3 of the control component 31 activates the first power detecting switch 53" to be grounded, so that the loop start switch 52" is disconnected. At this time, each of the driving devices 1 The electronic switches M1, M2, M3 and M4 are alternately turned on by the control of the control element 31 to control the flow of current of the motor coil 4.
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一電源偵測開關53”及該第二電源偵測開關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M1、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。When the voltage source VCC is interrupted, the output control terminal N3 of the control component 31 fails to provide a signal to the first power detecting switch 53" and the second power detecting switch 54", so that the two power detecting switches 53" and 54" form an open circuit. At this time, the second energy storage component 62 discharges electric energy, and activates the loop start switch 52" and the lower arm electronic switch M2 to be turned on; meanwhile, the first energy storage component 61 discharges electric energy. Actuating the two upper arm electronic switches M1, M4 to form a close; and the lower arm electronic switch M3 is turned off because the signal of the control element 31 is no longer received. Thereby, the motor current can flow in the buffer circuit, and The release of the motor current is performed.
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內，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。While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.
1．．．驅動裝置1. . . Drive unit
11．．．第一臂開關組11. . . First arm switch set
111．．．第一串聯連接點111. . . First tandem connection point
12．．．第二臂開關組12. . . Second arm switch group
121．．．第二串聯連接點121. . . Second tandem connection point
2．．．轉動停止電路2. . . Rotary stop circuit
3．．．控制單元3. . . control unit
31．．．控制元件31. . . control element
32．．．PWM轉換電路32. . . PWM conversion circuit
33．．．感應元件33. . . Inductive component
4．．．馬達線圈4. . . Motor coil
41．．．連接端41. . . Connection end
42．．．連接端42. . . Connection end
5．．．緩衝停止電路5. . . Buffer stop circuit
51．．．緩衝元件51. . . Cushioning element
52．．．迴路啟動開關52. . . Loop start switch
521．．．汲極端521. . . Extreme
522．．．閘極端522. . . Gate extreme
523．．．源極端523. . . Source extreme
53．．．電源偵測開關53. . . Power detection switch
531．．．汲極端531. . . Extreme
532．．．閘極端532. . . Gate extreme
533．．．源極端533. . . Source extreme
54．．．防逆流二極體54. . . Anti-countercurrent diode
5’．．．緩衝停止電路5’. . . Buffer stop circuit
51’．．．緩衝元件51’. . . Cushioning element
52’．．．迴路啟動開關52’. . . Loop start switch
521’．．．汲極端521’. . . Extreme
522’．．．閘極端522’. . . Gate extreme
523’．．．源極端523’. . . Source extreme
5”．．．緩衝停止電路5"...buffer stop circuit
51”．．．緩衝元件51"... cushioning element
52”．．．迴路啟動開關52"...loop start switch
521”．．．汲極端521"...汲extreme
522”．．．閘極端522"...gate extreme
523”．．．源極端523"...source extreme
53”．．．第一電源偵測開關53"...first power detection switch
531”．．．集極端531"...set extreme
532”．．．基極端532"...base extreme
533”．．．射極端533"...shoot extreme
54”．．．第二電源偵測開關54"...second power detection switch
541”．．．集極端541"...set extreme
542”．．．基極端542"...base extreme
543”．．．射極端543"...shooting extreme
6．．．儲能單元6. . . Energy storage unit
61．．．第一儲能元件61. . . First energy storage component
62．．．第二儲能元件62. . . Second energy storage component
M1．．．電子式開關M1. . . Electronic switch
M2．．．電子式開關M2. . . Electronic switch
M3．．．電子式開關M3. . . Electronic switch
M4．．．電子式開關M4. . . Electronic switch
M5．．．電子式開關M5. . . Electronic switch
M6．．．電子式開關M6. . . Electronic switch
M7．．．電子式開關M7. . . Electronic switch
M8．．．電子式開關M8. . . Electronic switch
P1．．．輸出控制端P1. . . Output console
P2．．．輸出控制端P2. . . Output console
N1．．．輸出控制端N1. . . Output console
N2．．．輸出控制端N2. . . Output console
N3．．．輸出控制端N3. . . Output console
91．．．橋式驅動器91. . . Bridge driver
92．．．控制單元92. . . control unit
93．．．儲能電容93. . . Storage capacitor
94．．．即時停止電路94. . . Immediate stop circuit
95．．．馬達線圈95. . . Motor coil
M91．．．電子式開關M91. . . Electronic switch
M92．．．電子式開關M92. . . Electronic switch
M93．．．電子式開關M93. . . Electronic switch
M94．．．電子式開關M94. . . Electronic switch
M95．．．電子式開關M95. . . Electronic switch
M96．．．電子式開關M96. . . Electronic switch
M97．．．電子式開關M97. . . Electronic switch
M98．．．電子式開關M98. . . Electronic switch
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。Figure 1: Schematic diagram of the circuit connection of a conventional fan system and its stop control circuit.
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。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.
第3圖：本發明第一實施例之緩衝停止電路未運作之電路示意圖。Fig. 3 is a circuit diagram showing the operation of the buffer stop circuit of the first embodiment of the present invention.
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。Fig. 4 is a circuit diagram showing the operation of the buffer stop circuit of the first embodiment of the present invention.
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。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.
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。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.
1．．．驅動裝置1. . . Drive unit
11．．．第一臂開關組11. . . First arm switch group
111．．．第一串聯連接點111. . . First tandem connection point
12．．．第二臂開關組12. . . Second arm switch group
121．．．第二串聯連接點121. . . Second tandem connection point
2．．．轉動停止電路2. . . Rotary stop circuit
3．．．控制單元3. . . control unit
31．．．控制元件31. . . control element
32．．．PWM轉換電路32. . . PWM conversion circuit
33．．．感應元件33. . . Inductive component
4．．．馬達線圈4. . . Motor coil
41．．．連接端41. . . Connection end
42．．．連接端42. . . Connection end
5．．．緩衝停止電路5. . . Buffer stop circuit
51．．．緩衝元件51. . . Cushioning element
52．．．迴路啟動開關52. . . Loop start switch
521．．．汲極端521. . . Extreme
522．．．閘極端522. . . Gate extreme
523．．．源極端523. . . Source extreme
53．．．電源偵測開關53. . . Power detection switch
531．．．汲極端531. . . Extreme
532．．．閘極端532. . . Gate extreme
533．．．源極端533. . . Source extreme
54．．．防逆流二極體54. . . Anti-countercurrent diode
6．．．儲能單元6. . . Energy storage unit
M1．．．電子式開關M1. . . Electronic switch
M2．．．電子式開關M2. . . Electronic switch
M3．．．電子式開關M3. . . Electronic switch
M4．．．電子式開關M4. . . Electronic switch
M5．．．電子式開關M5. . . Electronic switch
M6．．．電子式開關M6. . . Electronic switch
M7．．．電子式開關M7. . . Electronic switch
M8．．．電子式開關M8. . . Electronic switch
P1．．．輸出控制端P1. . . Output console
P2．．．輸出控制端P2. . . Output console
N1．．．輸出控制端N1. . . Output console
N2．．．輸出控制端N2. . . Output console
Claims (43)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW99102825A TWI467911B (en) | 2009-11-12 | 2010-02-01 | Fan system and stop control circuit thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW98138376 | 2009-11-12 | ||
| TW99102825A TWI467911B (en) | 2009-11-12 | 2010-02-01 | Fan system and stop control circuit thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201117546A TW201117546A (en) | 2011-05-16 |
| TWI467911B true TWI467911B (en) | 2015-01-01 |
Family
ID=44935262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW99102825A TWI467911B (en) | 2009-11-12 | 2010-02-01 | Fan system and stop control circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI467911B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329821A (en) * | 2015-06-26 | 2017-01-11 | 佛山市建准电子有限公司 | Motor system and fan system using same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202634338U (en) | 2012-04-11 | 2012-12-26 | 昆山广兴电子有限公司 | Motor circuit with power off brake function |
| CN103969965B (en) * | 2014-05-12 | 2015-11-18 | 华中科技大学 | The device of accurate control submersible photoetching apparatus soaking liquid temperature and Temp. control method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI314388B (en) * | 2005-12-23 | 2009-09-01 | Delta Electronics Inc | Fan system and real-time stopping device thereof |
-
2010
- 2010-02-01 TW TW99102825A patent/TWI467911B/en active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI314388B (en) * | 2005-12-23 | 2009-09-01 | Delta Electronics Inc | Fan system and real-time stopping device thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329821A (en) * | 2015-06-26 | 2017-01-11 | 佛山市建准电子有限公司 | Motor system and fan system using same |
| CN106329821B (en) * | 2015-06-26 | 2018-11-20 | 佛山市建准电子有限公司 | Motor system and the fan system for using the motor system |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201117546A (en) | 2011-05-16 |
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