200931236 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種電源管理系統，且特別是有關於 一種應用在可攜式電腦中之電源管系統。 【先前技術】 在科技發展日新月異的現今時代中，體積小及攜帶便 利性佳的可攜式電腦已越來越受到歡迎。一般來說，可攜 〇 式電腦包括本體及上蓋，本體及上蓋例如透過樞軸相互連 接。本體上設置有鍵盤及電源開關，上蓋則設置有顯示螢 幕。當可攜式電腦沒有被使用時，上蓋例如處於關閉位置 (上蓋覆蓋於本體上）。當可攜式電腦被使用時，上蓋則透 過樞轴轉動與本體形成一角度至開啟位置。 一般而言，使用者在上蓋處於關閉位置時搬動可攜式 電腦，在搬動過程中，可攜式電腦大多為關機狀況。然而， 在搬動可攜式電腦時，若上蓋誤觸位於本體上的電源開關 ® 的話，將使得可攜式電腦誤開機。如此，可攜式電腦耗電 量會增加，並使得可攜式電腦的電池續航力下降。如何避 免上蓋處於關閉位置時，誤觸電源開關，乃業界所致力的 方向之一。 【發明内容】 本發明有關於一種電源管理系統，用以避免應用其之 可攜式電腦因電源開關被誤觸而開機之情形，以減少耗電 6 200931236 量且提高電池續航力。 根據本發明提出一種電源管理系統，應用在可攜式電 腦中，可攜式電腦包括第一部分及第二部分，第一部分相 對於第二部分做樞軸轉動。電源管理系統包括觸發元件、 電容式觸控感測器（Capacitive-touch Sensor)及欲入式控制 器（Embedded Controller)。觸發元件設置於第一部分。電200931236 IX. Description of the Invention: [Technical Field] The present invention relates to a power management system, and more particularly to a power supply system for use in a portable computer. [Prior Art] In today's fast-changing technology era, portable computers with small size and good convenience have become more and more popular. In general, a portable computer includes a body and an upper cover, and the body and the upper cover are connected to each other, for example, via a pivot. The main body is provided with a keyboard and a power switch, and the upper cover is provided with a display screen. When the portable computer is not in use, the upper cover is, for example, in a closed position (the upper cover covers the body). When the portable computer is used, the upper cover is pivoted to form an angle with the body to the open position. Generally, the user moves the portable computer when the upper cover is in the closed position, and the portable computer is mostly turned off during the moving process. However, when the portable computer is moved, if the upper cover accidentally touches the power switch ® located on the main body, the portable computer will be turned off by mistake. As a result, the power consumption of the portable computer will increase and the battery life of the portable computer will decrease. How to avoid accidentally touching the power switch when the cover is in the closed position is one of the directions in the industry. SUMMARY OF THE INVENTION The present invention relates to a power management system for preventing a portable computer from being powered on due to a power switch being accidentally touched, so as to reduce power consumption and improve battery life. According to the present invention, a power management system is provided for use in a portable computer. The portable computer includes a first portion and a second portion, the first portion pivoting relative to the second portion. The power management system includes a trigger component, a capacitive touch sensor, and an embedded controller. The triggering element is arranged in the first part. Electricity
〇 容式觸控感測器用以感測第一部份相對於第二部份處於 開啟位置或關閉位置，電容式觸控感測器包括第一感測單 元及感測積體電路(Integrated Circuit，1C)。第一感測單元 設置於第二部分，以感測觸發元件是否接近第一感測單 元’並對應地觸發第一事件。感測積體電路回應於第一事 件來提供控制訊號。嵌入式控制器用以回應控制訊號來非 致能可攜式電腦之電源開關。 部份相對於第二部份係處於開啟位置或關閉位置。 觸發 分處於關閉位置時，電容式觸控感測器係輸、一部 之後，π 由 ........ .，一. "一一、_ 訊號； 根據本發明提出一種電源管理方法，應用在可推式電 腦中。可攜式電腦包括第一部分及第二部分，第一部分相 對於第二部分轉動。電源管理方法包括下列步驟：首先， 藉由使用電容式觸控感測器，根據觸發元件的位置感測第 几件設置於該第一部分；接著，當第一部分相對於 口應於控制訊號，非致能可攜式電腦之恭 ^ ^ % ’原開關 較 馬讓本發明之上述内容能更明顯易懂，下 佳眘始〜 \将舉一 只她例，並配合所附圖式，作詳細說明如下： 7 200931236 【實施方式】 本發明實施例之電源管理系统應用電容觸控感測器 (Capacitive-touch Sensor)，以於可攜式電腦之上蓋與本體 處於關閉狀態時，非致能(Disable)可攜式電腦之電源開關 之開關功能。如此，可避免可攜式電腦因電源開關被誤觸 而開機之情形。 第一實施例 請參照第1A圖與第1B圖，第ία圖與第1B圖繪示 〇 應用本實施例之電源管理系統之可攜式電腦的示意圖。在 本實施例電源管理系統100使用於可攜式電腦10中， 可攜式電腦10例如為：筆記型電腦、平板電腦、或低價 筆記型電腦。 可攜式電腦10包括第一部分及第二部分，第一及第 二部分例如經由樞軸16相互連接。舉例來說，第一及第 二部分例如分別為可攜式電腦10之上蓋12與本體14。於 上蓋12之表面A中設置有螢幕模組12a，於本體14之表 ❹ 面B設置有鍵盤14a與觸控板(Touch Pad)14b。 請參照第2圖，其繪示依照本發明第一實施例之電源 管理系統的方塊圖。有關第2圖的說明，敬請一併參照第 1A圖與第1B圖。在第2圖中，電源管理系統100包括觸 發元件120、電容式觸控感測器140、控制器、及電源控 制電路200。控制器例如是嵌入式控制器（Embedded Controller) 160。 嵌入式控制器160及電源控制電路200均電性連接 8 200931236 至電容式觸控感測器140。嵌入式控制器16〇用以選擇性 地非致能該可攜式電腦之電源開關之開關功能。而電源控 制電路200則用以選擇性地關閉螢幕模組12a的電源二卫 在本實施例中’觸發元件120為導電體材質，例如為 一金屬墊片（Pad)，其例如設置於上蓋12之螢幕模組12& 右下方之位置P1’電容式觸控感測器140及嵌入式控制器 160例如設置於本體14。 電容式觸控感測器140用以偵測可攜式電腦1〇之上 ❹蓋12與本體14係處於關閉位置（上蓋12覆蓋於本體14 上），或處於開啟位置（上蓋12與本體14之間具有一角 度）。當該第一部分相對於該第二部分處於一關閉位置時， 電容式觸控感測器係輸出控制訊號Sd。 電容式觸控感測器140包括感測單元142及感測積體 電路(Integrated Circuit)144。感測單元142設置於本體I4 中鍵盤14a之右上方之位置P2。觸發元件120及感測單元 ❹ 142所在之位置P1及P2相互對應。當可攜式電腦1〇之上 蓋12與本體14處於關閉位置時，值置Pi位於位置P2之 上方。如此’當可攜式電腦1〇之上蓋12與本體i4處於 關閉位置時，觸發元件12〇與感測單元142近距離地相 對。當可攜式電腦10之上蓋12與本體Η處於開啟位置 時，觸發元件120係遠離感測單元142。 舉例來說，感測單元142例如為電容性開關，事件E1 係用以指示觸發元件120接近感測單元142時，使感測單 元142之電容值改變時之狀態。 9 200931236 請參照第3圖，其繪示乃第2圖之為電容性開關之感 測單元142的之一例的示意圖。電容性開關包括金屬板 Ml及M2，當金屬板Ml及M2上方無其他之導電體時， 電容性開關之電容值接近金屬板Ml及M2間之寄生電容 Ci。當觸發元件120接近金屬板Ml及M2時，觸發元件 120與金屬板Ml形成寄生電容Co，且觸發元件120與金 屬板M2形成寄生電容Co’。如此，相較於觸發元件120 未接近金屬板Ml及M2時所對應的電容性開關的電容 Ο 值，觸發元件120接近金屬板Ml及M2後之電容性開關 係具有較高之電容值。感測積體電路144則根據電容性開 關之電容值的大小，來判斷觸發元件120是否接近金屬板 Ml及M2。並於判斷出觸發元件120接近金屬板Ml及 M2時，產生控制訊號Sd。 嵌入式控制器160用以根據控制訊號Sd來決定是否 非致能可攜式電腦10之電源開關180的開關功能。當電 源開關180的開關功能被非致能時，不管電源開關180是 ® 否被按下，可攜式電腦10之電源狀態均不會被改變。亦 即，當電源開關180的開關功能被非致能時，若可攜式電 腦10為電源關閉的狀態時，即使電源開關180被按下， 可攜式電腦10亦將持續維持於電源關閉的狀態，而不會 被啟動。 當控制訊號Sd產生時，表示事件ΕΓ產生，而可攜 式電腦10之上蓋12與本體14處於關閉位置。此時嵌入 式控制器160回應於控制訊號Sd來非致能電源開關180 10 200931236 之開關功能。如此，即便可攜式電腦1〇(例如處於關機情 形）之電源開關180被誤觸，可攜式電腦10仍可保持在關 機狀態。當控制訊號Sd未產生時，表示事件ΕΓ係未產生， 可攜式電腦10之上蓋12與本體14處於開啟位置。此時 嵌入式控制器160致能電源開關180。如此，使用者可經 由觸發電源開關180來對可攜式電腦10開機。 其中，感測積體電路144及嵌入式控制器160均接收 可攜式電腦1 〇中之恆啟動（Always On)電源’以在可攜式 〇 電腦ίο關機時執行前述操作。此恆啟動電源例如為可攜 式電腦10之電池模組，或是外接之交流電源。 電源控制電路200用以接收電源Pw，並提供驅動螢 幕模組12a所需之電源Pw’。電源控制電路200更用以回 應於控制訊號Sd來決定是否提供電源Pw’至螢幕模組 12a。當控制訊號Sd產生時，表示事件ΕΓ產生，可攜式 電腦10之上蓋12與本體14處於關閉位置。此時，電源 控制電路200回應控制訊號Sd來停止電源Pw’之供應，以 ® 關閉螢幕模組12a。當控制訊號Sd未產生時，表示事件 ΕΓ未產生，可攜式電腦10之上蓋12與本體14處於開啟 位置。此時，電源控制電路200正常地提供電源Pw’至螢 幕模組12a，以使螢幕模組12a正常操作。 在本實施例中雖僅以觸發元件120及感測單元142分 別設置於可攜式電腦10之上蓋12中之位置P1及本體14 之中之位置P2為例作說明，然，觸發元件120及感測單 元142之位置P1及P2亦可設置於可攜式電腦10中之其 11 200931236 他位置。只要在上蓋12與本體14處於關閉位置時，觸發 元件120與感測單元142相對，即不脫離本發明之範圍。 另一種作法為，觸發元件120與感測單元142之位置可相 互對調，例如，觸發元件Π0與感測單元142分別設置於 位置P2及P1，使得在上蓋12與本體14處於關閉位置時， 觸發元件120係位於感測單元142之下方。 本實施例之電源管理系統使用電容觸控感測器來於 可攜式電腦之上蓋與本體處於關閉狀態時，非致能可攜式 〇 電腦之電源開關之開關功能，以避免非啟動狀態下之可攜 式電腦在搬運時因電源開關被誤觸而開機。因此，相較於 傳統可攜式電腦，應用本實施例之電源管理系統之可攜式 電腦之耗電量較低且續航力較高。 本實施例之電源管理系統更可於可攜式電腦之上蓋 與本體處於關閉狀態時停止對可攜式電腦之螢幕模組之 供電。如此，更可進一步地降低可攜式電腦之耗電量。 第二實施例 〇 請參照第4圖，其繪示應用本發明第二實施例之電源 管理系統之可攜式電腦的方塊圖。本實施例之電源管理系 統400係應用在可攜式電腦30中，可攜式電腦30更採用 電容式觸控感測器來實現其之一個輸入輸出介面模組。舉 例來說，可攜式電腦30之滑鼠模組300中之滑鼠左鍵及 右鍵係以電容式觸控感測器來實現。 滑鼠模組300中包括感測單元302a、302b及感測積 體電路306。感測單元302a為電容性開關，用以回應於 12 200931236 其他導電體（包括使用者手指）接近此電容性開關之事件 E2，以產生用以指示此電容性開關之電容值改變之事件 E2’。感測單元302b亦為電容性開關，與感測單元302a 相同地，用以回應於其他導電體接近此電容性開關之事件 E3，以產生用以指示此電容性開關之電容值改變之事件 E3’。舉例來說，事件E2及E3分別用以指示使用者之手 指接近感測單元302a及302b，以操作滑鼠之左鍵與右鍵 之狀態。 〇 感測積體電路306用以回應於事件E2’來產生控制訊 號Sd2，並用以回應於事件E3’來產生控制訊號Sd3。控制 訊號Sd2及Sd3例如被輸出至可攜式電腦30之系統晶片 組306。系統晶片組306例如為南橋（South Bridge)晶片， 其用以回應於控制訊號Sd2及Sd3來執行對應之滑鼠控制 操作。 由於本實施例之可攜式電腦30已設置有感測積體電 路304，本實施例之電源管理系統400可與滑鼠模組300 ® 共用感測積體電路304。與第一實施例相同的是，本實施 例之可攜式電腦30中之上蓋亦設置了觸發元件410,可攜 式電腦30中之本體亦設置了感測單元420、電源控制電路 440、與嵌入式控制器480。如此，電源管理系統400中 之觸發元件410、感測單元420、感測積體電路304、電源 控制電路440及嵌入式控制器480可執行與第一實施例之 電源管理系統100中對應之電路實質上相同之功能，而本 實施例之電源管理系統400亦可回應於可攜式電腦30之 13 200931236 上蓋與本體之相對位置來選擇性地非致能可攜式電腦30 之電源開關的開關功能。同樣地，本實施例之電源管理系 統之可攜式電腦具有耗電量較低且續航力較高之優點。 此外，相較於第一實施例之電源管理系統，本實施例 之電源管理系統可與其他輸入輸出介面模組共用感測積 體電路。如此，本實施例更具有成本較低之優點。 綜上所述，雖然本發明已以一較佳實施例揭露如上， 然其並非用以限定本發明。本發明所屬技術領域中具有通 〇 常知識者，在不脫離本發明之精神和範圍内，當可作各種 之更動與潤飾。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。 14 200931236 【圖式簡單說明】 第1A與第1B圖繪示應用本實施例之電源管理系統之 可攜式電腦的不意圖。 第2圖繪示依照本發明第一實施例之電源管理系統的 電路圖。 第3圖繪示乃第2圖之感測單元142的詳細方塊圖。 第4圖繪示應用本實施例之電源管理系統之可攜式電 腦的方塊圖。 〇 【主要元件符號說明】 10、30 :可攜式電腦 12 :上蓋 12a、460 :螢幕模組 14 :本體 14a :鍵盤 16 :樞軸 ® A、B :表面 PI、P2 :位置 100、400 :電源管理系統 120、410 :觸發元件 140 :電容式觸控感測器 302a、302b、420 :感測單元 304 :感測積體電路 160、480 :嵌入式控制器 15 200931236 180、500 :電源開關 2〇〇、440 :電源控制電路 Ml、M2 :金屬板 300 :滑鼠模組 3 0 6 :糸統晶片組 16The capacitive touch sensor is configured to sense that the first portion is in an open position or a closed position relative to the second portion, and the capacitive touch sensor comprises a first sensing unit and a sensing integrated circuit (Integrated Circuit) , 1C). The first sensing unit is disposed in the second portion to sense whether the triggering element is in proximity to the first sensing unit' and correspondingly triggers the first event. The sense integrated circuit provides a control signal in response to the first event. The embedded controller responds to the control signal to disable the power switch of the portable computer. The portion is in an open position or a closed position relative to the second portion. When the trigger point is in the off position, the capacitive touch sensor is switched, after a part, π is ........, a. " one, _ signal; according to the invention, a power management is proposed The method is applied to a pushable computer. The portable computer includes a first portion and a second portion, the first portion being rotated relative to the second portion. The power management method includes the following steps. First, by using a capacitive touch sensor, the first component is set to the first portion according to the position of the trigger component; then, when the first portion is opposite to the mouth, the control signal is not The ability to enable the portable computer ^ ^ % 'original switch than Ma let the above content of the invention can be more obvious and easy to understand, the next good Shen Shi ~ \ will give a case of her, and with the drawings, for details The description is as follows: 7 200931236 Embodiments The power management system of the embodiment of the present invention uses a capacitive touch sensor (Capacitive-touch Sensor) to disable the portable computer when the upper cover and the body are in a closed state ( Disable) The switching function of the power switch of the portable computer. In this way, the portable computer can be prevented from being turned on due to the power switch being accidentally touched. First Embodiment Referring to FIG. 1A and FIG. 1B, FIG. 1A and FIG. 1B are schematic diagrams showing a portable computer to which the power management system of the present embodiment is applied. In the embodiment, the power management system 100 is used in the portable computer 10. The portable computer 10 is, for example, a notebook computer, a tablet computer, or a low-cost notebook computer. The portable computer 10 includes a first portion and a second portion, the first and second portions being interconnected, for example, via a pivot 16. For example, the first and second portions are, for example, the upper cover 12 and the body 14 of the portable computer 10, respectively. A screen module 12a is disposed on the surface A of the upper cover 12, and a keyboard 14a and a touch pad 14b are disposed on the surface B of the body 14. Referring to Figure 2, there is shown a block diagram of a power management system in accordance with a first embodiment of the present invention. For the description of Fig. 2, please refer to Fig. 1A and Fig. 1B together. In FIG. 2, power management system 100 includes a trigger component 120, a capacitive touch sensor 140, a controller, and a power control circuit 200. The controller is, for example, an embedded controller 160. The embedded controller 160 and the power control circuit 200 are electrically connected to the capacitive touch sensor 140 from 200931236. The embedded controller 16 is operative to selectively disable the switching function of the power switch of the portable computer. The power control circuit 200 is used to selectively turn off the power supply of the screen module 12a. In this embodiment, the trigger element 120 is made of a conductive material, such as a metal pad (Pad), which is disposed, for example, on the upper cover 12 . The screen module 12& the lower right position P1' capacitive touch sensor 140 and embedded controller 160 are disposed, for example, on the body 14. The capacitive touch sensor 140 is configured to detect that the cover 12 and the body 14 are in a closed position (the upper cover 12 covers the body 14) or in an open position (the upper cover 12 and the body 14) There is an angle between them). When the first portion is in a closed position relative to the second portion, the capacitive touch sensor outputs a control signal Sd. The capacitive touch sensor 140 includes a sensing unit 142 and a sensing integrated circuit 144. The sensing unit 142 is disposed at a position P2 on the upper right of the keyboard 14a in the body I4. The positions P1 and P2 at which the triggering element 120 and the sensing unit 142 are located correspond to each other. When the cover 12 and the body 14 are in the closed position above the portable computer, the value Pi is located above the position P2. Thus, when the upper cover 12 and the body i4 are in the closed position of the portable computer, the triggering member 12A is relatively close to the sensing unit 142. When the upper cover 12 and the body Η of the portable computer 10 are in the open position, the triggering element 120 is away from the sensing unit 142. For example, the sensing unit 142 is, for example, a capacitive switch, and the event E1 is used to indicate the state when the capacitance of the sensing unit 142 is changed when the triggering component 120 approaches the sensing unit 142. 9 200931236 Please refer to FIG. 3, which is a schematic diagram showing an example of the sensing unit 142 of the capacitive switch shown in FIG. The capacitive switch includes metal plates M1 and M2. When there are no other conductors above the metal plates M1 and M2, the capacitance value of the capacitive switch is close to the parasitic capacitance Ci between the metal plates M1 and M2. When the triggering element 120 approaches the metal plates M1 and M2, the triggering element 120 forms a parasitic capacitance Co with the metal plate M1, and the triggering element 120 forms a parasitic capacitance Co' with the metal plate M2. Thus, the capacitive switch having the trigger element 120 close to the metal plates M1 and M2 has a higher capacitance value than the capacitance Ο value of the corresponding capacitive switch when the trigger element 120 is not close to the metal plates M1 and M2. The sensing integrated circuit 144 determines whether the triggering element 120 is close to the metal plates M1 and M2 based on the magnitude of the capacitance value of the capacitive switch. When it is determined that the triggering element 120 is close to the metal plates M1 and M2, the control signal Sd is generated. The embedded controller 160 is configured to determine whether the switching function of the power switch 180 of the portable computer 10 is disabled according to the control signal Sd. When the switching function of the power switch 180 is disabled, the power state of the portable computer 10 is not changed regardless of whether the power switch 180 is pressed or not. That is, when the switching function of the power switch 180 is disabled, if the portable computer 10 is in the power-off state, even if the power switch 180 is pressed, the portable computer 10 will continue to be powered off. Status without being activated. When the control signal Sd is generated, it indicates that the event ΕΓ is generated, and the upper cover 12 and the body 14 of the portable computer 10 are in the closed position. At this time, the embedded controller 160 responds to the control signal Sd to disable the switching function of the power switch 180 10 200931236. Thus, even if the power switch 180 of the portable computer (e.g., in a shutdown state) is accidentally touched, the portable computer 10 can remain in the off state. When the control signal Sd is not generated, it indicates that the event is not generated, and the upper cover 12 and the body 14 of the portable computer 10 are in the open position. At this time, the embedded controller 160 enables the power switch 180. Thus, the user can turn on the portable computer 10 via the trigger power switch 180. The sensing integrated circuit 144 and the embedded controller 160 both receive the Always On power supply in the portable computer 1 to perform the foregoing operations when the portable computer is powered off. The constant starting power source is, for example, a battery module of the portable computer 10 or an external AC power source. The power control circuit 200 is configured to receive the power source Pw and provide a power source Pw' required to drive the screen module 12a. The power control circuit 200 is further configured to respond to the control signal Sd to determine whether to provide the power Pw' to the screen module 12a. When the control signal Sd is generated, it indicates that the event ΕΓ is generated, and the upper cover 12 and the body 14 of the portable computer 10 are in the closed position. At this time, the power supply control circuit 200 stops the supply of the power supply Pw' in response to the control signal Sd to close the screen module 12a. When the control signal Sd is not generated, it indicates that the event ΕΓ is not generated, and the upper cover 12 and the body 14 of the portable computer 10 are in the open position. At this time, the power supply control circuit 200 normally supplies the power source Pw' to the screen module 12a to cause the screen module 12a to operate normally. In the embodiment, only the triggering component 120 and the sensing unit 142 are respectively disposed at the position P1 in the upper cover 12 of the portable computer 10 and the position P2 in the body 14 as an example. However, the triggering component 120 and The positions P1 and P2 of the sensing unit 142 can also be set in the 11 200931236 position of the portable computer 10. As long as the upper cover 12 and the body 14 are in the closed position, the triggering member 120 is opposed to the sensing unit 142 without departing from the scope of the present invention. In another embodiment, the positions of the triggering component 120 and the sensing unit 142 can be mutually adjusted. For example, the triggering component Π0 and the sensing component 142 are respectively disposed at the positions P2 and P1, so that when the upper cover 12 and the body 14 are in the closed position, the triggering is performed. The component 120 is located below the sensing unit 142. The power management system of the embodiment uses a capacitive touch sensor to disable the switching function of the power switch of the non-enable portable computer when the upper cover and the body of the portable computer are in a closed state, so as to avoid the non-starting state. The portable computer is turned on when the power switch is accidentally touched during transportation. Therefore, the portable computer to which the power management system of the present embodiment is applied has lower power consumption and higher endurance than the conventional portable computer. The power management system of the embodiment can stop power supply to the screen module of the portable computer when the upper cover and the body of the portable computer are in the closed state. In this way, the power consumption of the portable computer can be further reduced. Second Embodiment 〇 Referring to Figure 4, there is shown a block diagram of a portable computer to which the power management system of the second embodiment of the present invention is applied. The power management system 400 of the present embodiment is applied to the portable computer 30. The portable computer 30 further implements an input/output interface module by using a capacitive touch sensor. For example, the left mouse button and the right button of the mouse module 300 of the portable computer 30 are implemented by a capacitive touch sensor. The mouse module 300 includes sensing units 302a, 302b and a sensing integrated circuit 306. The sensing unit 302a is a capacitive switch for responding to the event E2 of the other capacitive body (including the user's finger) approaching the capacitive switch in response to 12 200931236 to generate an event E2' indicating the change of the capacitance value of the capacitive switch. . The sensing unit 302b is also a capacitive switch, similar to the sensing unit 302a, in response to the event E3 of the other conductive body approaching the capacitive switch to generate an event E3 indicating the change of the capacitance value of the capacitive switch. '. For example, events E2 and E3 are respectively used to instruct the user's finger to approach the sensing units 302a and 302b to operate the left and right mouse states of the mouse. The sensing integrated circuit 306 is configured to generate the control signal Sd2 in response to the event E2' and to generate the control signal Sd3 in response to the event E3'. The control signals Sd2 and Sd3 are output, for example, to the system chipset 306 of the portable computer 30. The system chipset 306 is, for example, a South Bridge wafer for performing corresponding mouse control operations in response to the control signals Sd2 and Sd3. Since the portable computer 30 of the present embodiment has been provided with the sensing integrated circuit 304, the power management system 400 of the present embodiment can share the sensing integrated circuit 304 with the mouse module 300®. The same as the first embodiment, the upper cover of the portable computer 30 of the present embodiment is also provided with a triggering component 410. The body of the portable computer 30 is also provided with a sensing unit 420, a power control circuit 440, and Embedded controller 480. As such, the triggering component 410, the sensing unit 420, the sensing integrated circuit 304, the power supply control circuit 440, and the embedded controller 480 in the power management system 400 can execute the circuit corresponding to the power management system 100 of the first embodiment. The power management system 400 of the present embodiment can also selectively switch the power switch of the portable computer 30 in response to the relative position of the upper cover of the portable computer 30 13 200931236 and the body. Features. Similarly, the portable computer of the power management system of the present embodiment has the advantages of low power consumption and high endurance. In addition, the power management system of the present embodiment can share the sensing integrated circuit with other input/output interface modules as compared with the power management system of the first embodiment. As such, the present embodiment has the advantage of lower cost. In view of the above, the present invention has been disclosed in a preferred embodiment, and is not intended to limit the present invention. It will be appreciated by those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. 14 200931236 [Simple description of the drawings] Figs. 1A and 1B illustrate the intention of the portable computer to which the power management system of the present embodiment is applied. Fig. 2 is a circuit diagram showing a power management system in accordance with a first embodiment of the present invention. FIG. 3 is a detailed block diagram of the sensing unit 142 of FIG. 2 . Fig. 4 is a block diagram showing a portable computer to which the power management system of the embodiment is applied. 〇 [Main component symbol description] 10, 30: Portable computer 12: Top cover 12a, 460: Screen module 14: Main body 14a: Keyboard 16: Pivot® A, B: Surface PI, P2: Positions 100, 400: Power management system 120, 410: triggering element 140: capacitive touch sensor 302a, 302b, 420: sensing unit 304: sensing integrated circuit 160, 480: embedded controller 15 200931236 180, 500: power switch 2〇〇, 440: power control circuit Ml, M2: metal plate 300: mouse module 3 0 6 : SiS chipset 16