M313813 八、新型說明： 【新型所屬之技術領域】 本創作得、關於一種通用串列匯流排（Universai Serial Bus，USB)負載檢測裝置，特別是一種可快速檢測通用串列匯 流排之最大電流貞载之财排貞載檢測裝置。 【先前技術】 通用串列匯流排（Universai Serial Bus; USB)是新 φ 一代的周邊设備介面，其係由Intel、Compaq、NEC、DEC、 IBM、Northern Telecom、Microsoft 等七家軟硬體製造商 所共同制定的，此種介面的傳輸速率有L 5Mbps與l2Mbps 兩種形式，最多可以連接到127部周邊設備，因為它的傳 輸速率比起個人電腦所使用的平行埠或是序列埠都快了許 夕所以usb對於電腦設備與周邊介面的傳輸效率皆有顯 者的提昇。 • 現今電腦系統或筆記型電腦的作業系統皆支援USB "面，電細系統或筆記型電腦的周邊通訊埠皆有統一的制 定規格，例如支援USB介面網路卡、集線器、鍵盤、滑鼠、 搖桿、光碟機、磁帶機、印表機、掃描器、數位相機等周 . 邊裝置，幾乎包含了所有的周邊設備，這些USB裝置不但 • 支援即插即用（Hug and Play)的能力，而且不必重新開機 便可使用（H〇tSwap)。因此，藉由USB,可以將不同類型 的周邊設備如滑鼠、鍵盤、搖桿、剩πΛ、數據機、掃描器、 光碟機等等，透過相_介面連接在電腦上，從而簡化了 M313813 個人電腦連接介面類型。此外，USB還具有成本低、連接 設備多、佔用系統資源少、支持多種傳輸類型等優點，無 疑挺供消費者使用上極大的便利性。 、 雖然，現今的USB裝置皆具有標準的規格，以連接電 腦之USB埠（ports)，經電腦主機（H〇st)端偵測到新的USB 裝置後便可提供使用者利用。然而，如何得知上述電腦主 機端所能承受USB裝置連接USB埠後的最大電流負載或當 φ 電腦主機端於承受USB裝置連接滿載狀況下會不會影響到 電腦系統的正常運作，習知檢測電腦主機之USB埠的最大 電流負載係以電腦主機於USB埠滿載狀況下對單一 USB埠 量測其下拉電壓（port droop)而得知該USB埠的電壓電流 關係，即可得到該USB埠的最大電流負載（current margin)’然而，此一檢測方式非常不便且毫無效率，若當 電腦I產時，將會存在有產品品質之可靠度及穩定性的隱 憂，也易造成回收成本的增加，因此如何產出一種能快速 檢測USB裝置之最大電流負載的檢測裝置及其檢測方法， 將是業界亟欲解決之問題。 【新型内容】 鑒於以上的問題，本創作的主要目的在於提供一種通 — 用串列匯流排（Universal Seria! Bus ; USB)負载檢測裝 ^ 置’以有效且快速地檢測待測USB裝置之最大負載。 依據上述之目的，本創作揭露一種通用串列匯流排 (Universal Serial Bus ; USB)負載檢測裝置，用以檢測一 6 M313813 待測通用串列匯流排主機端（Device under test USB Host ; DUT USB Host)之最大容許負載，該USb負載檢測裝 置包含有：一模擬USB裝置，其具有二電源線及二信號線， 以與該待測USB主機端連接；一微處理器，電連接該模擬 USB裝置，且具有與該模擬USB裝置之二電源線對應之二 腳位；一模擬信號偵測電路，電連接該模擬USB裝置，且 具有與該模擬USB裝置之二信號線對應之二腳位；以及一 _ 負載控制單元，電接該微處理器，以接收該微處理器所傳 來之調變訊號而增加模擬USB裝置之負載至該待測USB之 該最大容許負載。 本創作之USB負载檢測裝置可達成以下之功效：1. 相容性高，不需額外驅動程式。2.提早改善USB負載過大 而影響系統的問題。3 ·操作簡單，檢測快速。 以上之關於本新型内容之說明及以下之實施方式 鲁 之說明係用以示範與解釋本發明之原理，並且提供本新 型之專利申請範圍更進一步之解釋。 【實施方式】 請參照第1圖。第1圖係本創作通用串列匯流排 (Universal Serial Bus ; USB)負載檢測裝置之功能方塊 〜 圖。如第1圖所示，本創作之USB負載檢測裝置10係用以 ‘ 檢測一待測通用串列匯流排主機端（Device under test USB Host ; DUT USB H〇st)70之最大容許負載，USB負載檢 測裝置10包含有一模擬USB裝置20、一微處理器（Micro M313813M313813 VIII. New description: [New technical field] This is a general-purpose serial bus (USB) load detection device, especially a maximum current that can quickly detect a universal serial bus. The loading and unloading detection device. [Prior Art] Universal Serial Bus (USB) is a new φ generation peripheral device interface, which is manufactured by seven hardware and software such as Intel, Compaq, NEC, DEC, IBM, Northern Telecom, and Microsoft. According to the joint venture, the transmission rate of this interface is L 5Mbps and l2Mbps. It can be connected to up to 127 peripherals because its transmission rate is faster than the parallel or serial port used by personal computers. Xu Xi, so usb has a significant improvement in the transmission efficiency of computer equipment and peripheral interfaces. • Today's computer systems or notebook operating systems support USB "face, peripherals for laptops or notebooks, all have uniform specifications, such as support for USB interface network cards, hubs, keyboards, mice , rocker, CD player, tape drive, printer, scanner, digital camera, etc. The side device contains almost all peripheral devices. These USB devices not only support the ability of Hug and Play. And you don't have to reboot to use (H〇tSwap). Therefore, with USB, different types of peripheral devices such as a mouse, a keyboard, a joystick, a residual π, a data machine, a scanner, a CD player, etc. can be connected to the computer through a phase interface, thereby simplifying the M313813 person. Computer connection interface type. In addition, USB has the advantages of low cost, multiple connected devices, less system resources, and support for multiple types of transmission. It is undoubtedly very convenient for consumers to use. Although, today's USB devices have standard specifications to connect to the USB ports of the computer, and the new USB device can be detected by the host computer (H〇st) to provide users with access. However, how to know that the above computer host can withstand the maximum current load after the USB device is connected to the USB port or when the host computer of the φ computer is fully loaded with the USB device, it will not affect the normal operation of the computer system. The maximum current load of the USB port of the computer host is obtained by measuring the voltage droop relationship of the USB port with a single USB port under the USB 埠 full load condition and knowing the voltage and current relationship of the USB port. Maximum current load' However, this method of detection is very inconvenient and inefficient. If the computer I is produced, there will be concerns about the reliability and stability of the product quality, and it will easily lead to an increase in the cost of recycling. Therefore, how to produce a detecting device capable of quickly detecting the maximum current load of the USB device and its detecting method will be an problem that the industry is eager to solve. [New content] In view of the above problems, the main purpose of this creation is to provide a universal use of the serial bus (USB) load detection device to effectively and quickly detect the maximum USB device to be tested. load. According to the above purpose, the present invention discloses a universal serial bus (USB) load detecting device for detecting a 6 M313813 universal serial bus host to be tested (Device under test USB Host; DUT USB Host) The maximum allowable load, the USb load detecting device comprises: an analog USB device having two power lines and two signal lines for connecting to the USB host to be tested; and a microprocessor electrically connecting the analog USB device And having two pins corresponding to the two power lines of the analog USB device; an analog signal detecting circuit electrically connected to the analog USB device and having two pins corresponding to the two signal lines of the analog USB device; A load control unit is electrically connected to the microprocessor to receive the modulation signal transmitted by the microprocessor to increase the load of the analog USB device to the maximum allowable load of the USB to be tested. The USB load detection device of the present invention can achieve the following effects: 1. High compatibility without additional drivers. 2. Improve the USB load too much early and affect the system. 3 · Simple operation and fast detection. The above description of the present invention and the following embodiments are intended to illustrate and explain the principles of the present invention and to provide a further explanation of the scope of the present invention. [Embodiment] Please refer to Figure 1. Figure 1 is a functional block of the Universal Serial Bus (USB) load detection device. As shown in Fig. 1, the USB load detecting device 10 of the present invention is used to 'detect the maximum allowable load of a device under test USB host (DUT USB H〇st) 70, USB. The load detecting device 10 includes an analog USB device 20 and a microprocessor (Micro M313813).
Control Unit; MCIO30、一負載控制單 u训、一模播作骑 偵測電路50以及一顯示裝置60。 、 °儿 待測USB主機端70内共接有四條線 八V木圖不），分別 為：Vcc、Gnd、D+及D〜，Vcc與Gnd係為雷、、㈣ 脅寬源線；D+盥D- 係為對絞（twist paired)信號線。故，太 ^The control unit; the MCIO 30, a load control unit, a single-mode broadcast riding detection circuit 50, and a display device 60. , ° children to be tested in the USB host end 70 is connected to four lines eight V wood map no), respectively: Vcc, Gnd, D + and D ~, Vcc and Gnd are Ray,, (4) threat wide source line; D + 盥The D- is a twist paired signal line. So, too ^
， 不創作之模擬USB I置20亦没计有對應連接待測USB主機端7n + 之 Vcc、Gnd、 D+及D-腳位。 • 本創作之微處理态30係為一單晶片處理器，其具有 二腳位V及G分別電連接於模擬USB裝置2〇所對應之 及Grid腳位，用以接收模擬USB裝置20之電壓訊號以測得 模擬USB裝置20之負載結果，並輸出一調變訊號丁。 模擬信號偵測電路50具有二腳位D1及])2分別電連 接於模擬USB裝置20所對應之d+及D-腳位，用以接收模 擬USB裝置20所對應D+及D-腳位的信號狀態。當D+及D一 φ 腳位接上高電位時，D1及D2所偵測到訊號為”1，，，表示模 擬USB裝置20係處於正常負载狀況下，；p+及D—腳位接上 低電位時，D1及D2所偵測到訊號為，，〇，，，表示模擬USB裝 置20係處於滿載狀況下。此外，模擬信號偵測電路5〇會 將偵測模擬USB裝置20之負載狀況傳遞一偵測訊號s至微 處理器30，當微處理器30接收到模擬USB裝置20所傳來 之負載結果後，會與模擬USB裝置20之負載結果作比較 後’再輸出調變訊號T。 負載控制單元40係電連接於微處理器30，用以接收 8 M313813 Μ處里30所傳來之調變訊號τ，以提升模擬腿裝置 ，負，，藉此測試待測USB主機端70的負载極限，再經由 顯示裝置60顯示出待㈣USB主機端70的電麼電流負载狀 況於本創作中，負載控制單元40可為一光繼電器（Photo Relay) 〇 此外，本創作之USB負載檢測裝置10另包含有一開 始鍵（Start)12，電連接於微處理器3〇，用以提供一使用 者啟動本創作之USB負載檢測裝置1〇，以及一重置鍵 (Resetm，電連接於微處理器％，用以當使用者於檢測 待測USB主機# 7Q發生異常狀況時，可執行取消重置盘回 復狀態的動作。 ~ 以下將說明本創作USB負載檢測裝置10檢測待測USB 主機端70的操作原理。請參照第2圖並一併參考第1圖。 第2圖係本創作之USB負載檢測震置i Q檢測待測卿主機 端70之最大負載的流程圖。如第2圖所示，首先，微處理 器30會傳遞-初始負載測試值至負載控制單元仙（步驟 102)，以檢測模擬USB裝置2〇之負載值。由於咖協會定 義USB裝置的壓降及負載範圍必須在正貞25〇卿及皿The analog USB I set 20 that is not created does not count the Vcc, Gnd, D+ and D- pins that are connected to the USB host 7n + to be tested. • The micro-processing state 30 of the present invention is a single-chip processor having two legs V and G electrically connected to the corresponding Grid pins of the analog USB device 2 to receive the voltage of the analog USB device 20 The signal is used to measure the load result of the analog USB device 20, and outputs a modulated signal. The analog signal detecting circuit 50 has two pins D1 and 2) respectively electrically connected to the d+ and D- pins corresponding to the analog USB device 20 for receiving signals corresponding to the D+ and D- pins of the analog USB device 20. status. When the D+ and D_φ pins are connected to a high potential, the signals detected by D1 and D2 are “1,” indicating that the analog USB device 20 is under normal load conditions; the p+ and D− pins are connected low. At the potential, the signals detected by D1 and D2 are,,,,,, indicating that the analog USB device 20 is under full load. In addition, the analog signal detection circuit 5 will transmit the load condition of the analog USB device 20. A detection signal s is sent to the microprocessor 30. When the microprocessor 30 receives the load result from the analog USB device 20, it compares with the load result of the analog USB device 20 and then outputs the modulation signal T. The load control unit 40 is electrically connected to the microprocessor 30 for receiving the modulation signal τ transmitted from the 8 M313813 30 30 to improve the analog leg device, negative, thereby testing the USB host 70 to be tested. The load limit is displayed on the display device 60. The current load condition of the USB host terminal 70 is displayed in the present invention. The load control unit 40 can be a photo relay. In addition, the USB load detecting device 10 of the present invention is provided. Also includes a start button (Start) 12 The utility model is electrically connected to the microprocessor 3A for providing a user to activate the USB load detecting device 1 of the present invention, and a reset button (Resetm, electrically connected to the microprocessor % for detecting when the user is When the USB host #7Q detects an abnormal condition, the operation of canceling the reset of the disk recovery state can be performed. ~ The operation principle of the USB load detecting device 10 of the present invention for detecting the USB host terminal 70 to be tested will be described below. Please refer to FIG. 2 and FIG. Refer to Figure 1. Figure 2 is a flow chart of the maximum load of the host load end 70 of the USB load detection i Q of the present invention. As shown in Figure 2, first, the microprocessor 30 will pass - The initial load test value is sent to the load control unit (step 102) to detect the load value of the analog USB device 2. Since the coffee association defines the voltage drop and load range of the USB device, it must be in the correct state.
Ohm/500mA貞載環境下進行測試，故本創作之初始負載係 採10K Ohm/500mA之電流負载進行測試。 接著，微處理器30在接收模擬USB裝置2〇所傳來之 負載結果（步驟104)以及模擬信號偵測電路5〇所傳來之偵 測訊號S後（步驟106)，會輪出調變訊號τ命令負載控制 M313813 單元4〇新增—預設電流值於模擬USB裝置20,以判斷模 擬USB名置2〇是否超過其最大電流負載？（步驟⑽），若 U权擬USB I置2〇尚未超過最大電流負載則重複步驟 m至1G8’㈣㈣⑽中施予大於該預設電流值之電流 負載。若以檢測出模擬咖裝置20已超過最大電流負載， 則需經微處理器30之内部邏輯運算判斷是否測試通過（步 ，110)?絲處理器3 Q判斷尚未賴通過，則藉由微處理 30内建之除法器32之邏輯運算，命令負載控制單元 輸出上述之電流負載之一半至模擬USB裝置20(步驟 112)進行賴後再執行㈣110,例如：原來料的電流負1 載係5〇〇mA’若未測試通過則再施予250mA進行測試直至 微處理器3Q觸測試通過為止，如此即可獲得待測USB 域端7G之最大電流負載；若經微處理器3()判斷測試以 完畢，則藉由顯示裝置6〇顯示出待測哪主機端7〇之最 大負載的電流電壓值（步驟114)。 、、相較於習知技術’本創作之㈣負載檢測裝置1〇可 達成乂下之力放· 1·相容性高’不需額外驅動程式：藉由本 1作可適用於任何有哪埠的介面上，且毋需安裝驅動 程式即可執行檢測動作。2.提早改善脱負载過大而影塑 糸統的問題：以使用者使用概念去檢視使用負餘 兄可知知產口口的問題以在設計階段上提早解決，降低客 戶女而。斥求提升產品品質並降低回收成本。&操作簡單， 檢測快速：設計上利帛卿隨插即用（Plugandpiay)功 10 M313813 能，檢測Vcc/Gnd負載電壓狀況，並利用n D+/D-判斷的The Ohm/500mA load test was carried out, so the initial load of this creation was tested with a current load of 10K Ohm/500mA. Then, after receiving the load result transmitted by the analog USB device 2 (step 104) and the detection signal S transmitted by the analog signal detecting circuit 5 (step 106), the microprocessor 30 will rotate and adjust. Signal τ command load control M313813 Unit 4 〇 Added - preset current value to the analog USB device 20 to determine if the analog USB name is set to 2 〇 exceeds its maximum current load? (Step (10)), if the U-weight USB I is set to 2, the maximum current load has not been exceeded, and the current load greater than the preset current value is applied in steps m to 1G8'(4)(4)(10). If it is detected that the analog coffee device 20 has exceeded the maximum current load, it is determined by the internal logic operation of the microprocessor 30 whether the test passes (step, 110). The wire processor 3 Q judges that the test has not passed, and the micro processing is performed. 30 The logic operation of the built-in divider 32 commands the load control unit to output one of the above current loads to the analog USB device 20 (step 112) and then executes (4) 110, for example, the current current is negative 1 carrier 5〇 〇mA' If it is not tested, then apply 250mA to test until the microprocessor 3Q touch test passes, so that the maximum current load of the USB domain 7G to be tested can be obtained; if the test is judged by the microprocessor 3() When it is completed, the current voltage value of the maximum load of the host terminal 7 to be measured is displayed by the display device 6 (step 114). Compared with the conventional technology, the (4) load detection device of the present invention can achieve the force of the armpit. 1. High compatibility. No additional driver required: This can be applied to any one. The detection interface can be performed without the need to install a driver. 2. Improve the problem of over-loading and shadowing in advance. The problem of using the concept of user use is to examine the problem of using the negative brother. Responsible for improving product quality and reducing recycling costs. & Simple operation, fast detection: Designed with the plug-and-play (Plugandpiay) function 10 M313813, the Vcc/Gnd load voltage condition can be detected and judged by n D+/D-
裝置的動作狀態，即可快速地測出待測USR D 的攻大負翁。 雖然本新型以前述之實施例揭露如上，然其並非 新型。在不脫離本新型之精神和範圍内，所為 :定本 屬本新型之專梅護範圍 t動細飾，均 所附之申請專利範圍。 呆邊乾圍凊參考 # 【圖式簡單說明】 第1圖係本創作诵 能方塊圖；以及 列匯流排負载檢測裝置之功 第2圖係本創作之π 機端之最大負载的流 、载檢測裝置檢測待測USB 【主要元件符號說明】 10 12 通用串列匯流排負載檢測裝置 14 開始鍵 20 重置鍵 30 模鍵通用串列匯流排裝置 40 微處理器 50 負戟控制單元 60 模提信號偵測電路 70 顯示裝置 T、S 待’則通用串列匯流排主機端 訊號 M313813 V、G、D卜 D2、 、Vcc、Gnd、D+、D- 腳位 、 步驟102 提供一初始負載測試值 “ 步驟104 微處理器接收模擬通用串列匯流排 裝置之電壓狀態 步驟106 微處理器接收模擬控制電路所傳來 摸擬通用串列匯流排裝置之狀態偵 測訊號S _ 步驟108 微處理器命令負載控制單元新增一預 設電流值於模擬通用_列匯流排裝 置判斷是否超過其最大電流負載？ 步驟110 微處理器判斷是否測試通過？ 步驟112 以除法器做二分法邏輯運算 步驟114 顯示裝置顯示出測試待測通用串列匯 流排之主機端的最大負載值 • 12The action state of the device can quickly measure the attacking of the USR D to be tested. Although the present invention has been disclosed above in the foregoing embodiments, it is not novel. Without departing from the spirit and scope of the present invention, it is intended that the present invention belongs to the scope of the patent application of the present invention.呆 干 干 凊 凊 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 【 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第Detection device detects USB to be tested [Description of main component symbols] 10 12 Universal serial busbar load detection device 14 Start button 20 Reset button 30 Modulo universal serial busbar device 40 Microprocessor 50 Negative control unit 60 The signal detecting circuit 70 displays the device T, S to be 'the universal serial bus terminal signal M313813 V, G, D Bu D2, Vcc, Gnd, D+, D- pin, step 102 provides an initial load test value Step 104: The microprocessor receives the voltage status of the analog universal serial bus device. Step 106: The microprocessor receives the status detection signal sent by the analog control circuit to simulate the universal serial bus device. S_Step 108 Microprocessor command The load control unit adds a preset current value to the analog universal_column bus device to determine whether it exceeds its maximum current load. Step 110: The microprocessor determines whether to test By? Step 112 to make bisection divider logic operation step 114 the display means displays maximum load value of the host-side universal serial testing of busbars tested • 12