201105983 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明係關於一種功率轉換效率量測系統及方法。 【先前技林ί】 [0002] 為了確保電腦在使用過程中正常執行各項功能，測試人 員在完成電腦硬體組裝後，就必須進行電腦硬體的各項 功能的量測與驗證，例如對電壓調節器（V ο 11 a g e R e g -ulator Device，VRD)等電壓轉換設備的功率轉換效 率進行量測。電壓調節器可將較高的直流電壓轉換成較 低的直流電壓以給主機板上不同的晶片供電，其功率轉 換效率會隨著所連接晶片的不同而變化。而電壓調節器 的功率轉換效率是衡量電壓調節器運行狀態的重要性能 指標，所以在電腦主機板出廠前就需對電壓調節器功率 轉換效率進行量測以驗證是否符合規範。 [0003] 目前，對電壓調節器功率轉換效率的量測方法一般是透 過測試人員複數次量測電壓調節器的輸入功率及輸出功 率，並記錄量測結果，並且每一電壓調節器的量測時間 往往長達數小時，而且量測期間測試人員無法離開現場 ，還需記錄大量資料。此人工量測方法花費了大量時間 與精力，並且極容易出錯，無法在短時間内完成量測， 因此使得量測準確度和效率會極低。 【發明内容】 [0004] 鑒於以上内容，有必要提供一種功率轉換效率量測系統 及方法，能夠自動對功率轉換效率進行量測，提高量測 的效率及準確度。 098127335 表單編號A0101 第4頁/共19頁 0982046855-0 201105983 [0005] Ο 〇 一種功率轉換效率量測系統，包括一電源、一電阻、一 電壓表、一電子負載及一量測設備，該電源透過該電阻 和該電壓表的並聯電路連接該電壓調節器，該電壓調節 器還透過該電子負載連接該電腦，該電腦還連接該電壓 表，該電腦包括一處理器及一記憶體，該處理器與該記 憶體相連並執行該記憶體内存儲的指令，該記憶體包括 一量測設定模組，用於預先設定該電壓調節器的最大輸 出電流及量測次數，並根據預設的目標輸出電流的計算 公式計算出每次量測時該電壓調節器的目標輸出電流； 一負載調整模組，用於讀取該電子負載上記錄的流經該 電子負載的電流，並調整該電子負載使得該電子負載的 電流等於該電壓調節器的目標輸出電流；一計算模組， 用於透過讀取的複數組流經該電子負載的電流與該電子 負載的輸入電壓相乘以計算出該電壓調節器的各組輸出 功率，並讀取該電壓表所量測該電阻兩端的電壓，根據 該電阻的電阻值及該電源的輸出電壓，計算出該電壓調 節器的各組輸入功率，該電壓調節器的功率轉換效率等 於所有組輸出功率與所有組輸入功率的比值的平均值； 及一判斷模組，用於判斷量測次數的序號是否超出預設 的量測次數，若否，則設置量測次數的序號以進行下一 次的量測。 [0006] 一種功率轉換效率量測方法，包括以下步驟： 預先設定一電壓調節器的最大輸出電流及量測次數，根 據預設的目標輸出電流的計算公式計算出每次量測時該 電壓調節器的目標輸出電流，並設置初始量測次數的序 098127335 表單編號Α0101 第5頁/共19頁 0982046855-0 [0007] 201105983 號； [0008] 讀取一電子負載上記錄的流經該電子負載的電流，並調 整該電子負載使得該電子負載的電流等於量測次數的序 號對應的該電壓調節器的目標輸出電流； [0009] 透過讀取的複數組流經該電子負載的電流與該電子負載 的輸入電壓相乘以計算出該電壓調節器的各組輸出功率 ，並讀取一電壓表所量測一電阻兩端的電壓，根據該電 阻的電阻值及該電源的輸出電壓，計算出該電壓調節器 的各組輸入功率； [0010] 計算出該電壓調節器的功率轉換效率，該功率轉換效率 等於所有組輸出功率與所有組輸入功率的比值的平均值 ;及 [0011] 判斷該量測次數的序號是否超出預設的量測次數，若否 ，設置該量測次數的序號，返回執行讀取一電子負載上 記錄的流經該電子負載的電流的步驟。 [0012] 本發明功率轉換效率量測系統及方法透過量測設定模組 預先設定電壓調節器的最大輸出電流及量測次數，並計 算出每次量測時電壓調節器的目標輸出電流；讀取流經 電子負載的電流並使得電子負載的電流等於量測次數的 序號對應的電壓調節器的目標輸出電流，最後透過讀取 的各項資料計算出電壓調節器的各組輸出功率、輸入功 率及功率轉換效率；直至順次完成所有量測，就可實現 功率轉換效率的自動量測，從而提高量測的效率及準確 度0 098127335 表單編號A0101 第6頁/共19頁 0982046855-0 201105983 【實施方式】 ο 〇 [0013]請—併參閱圖1及圖2，本發明功率轉換效率量測系統6可 對一電壓轉換設備如一電壓調節器30在不同輸出電流時 的功率轉換效率進行量測，其較佳實施方式包括—電源 10、~電阻R、一電壓表20、一電子負載40及一量測設備 如一電腦50。電源1〇透過電阻R和電壓表20的並聯電路連 接電壓調節器30，電壓調節器30還透過電子負載4〇連接 電腦50，電腦50還連接電壓表20。在本實施方式中，電 阻R為電阻值極小的精密電阻，電子負載4〇為一可調整負 載的精密的電子負載儀器，其可提供電壓與電流資訊如 記錄電子負載40的輸入電壓及流經電无满與40的電流， 並且電子負載40會將輸入的電能完全轉換為熱能散逸。 電源10可輸出一直流電壓透過電阻R分壓_礙供給電壓調 節器30。電壓調節器3〇將此直流電壓轉每為另一直流電 壓輸出給電子負載4〇。電壓表20可精確&量測電阻R兩端 的電壓。電腦50對電壓調節器30的功半㊆辫效率進行計 算。在本實施方式中，電腦50透過USB ( Uni versa 1 Serial Bus，通用串列匯流排）介面與電壓表20及電子 負載40相連，在其他實施方式中，電腦50也可以透過其 他介面如RS232等介面與電壓表20及電子負載40相連。 [0014] 該電腦50包括一處理器52及一記憶體53。處理器52與記 憶體53相連並執行記憶體53内存儲的指令，記憶體53包 括一量測設定模組530、一負載調整模組532、一計算模 組534及一判斷模組536。 [0015] 該量測設定模組530用於預先設定電壓調節器30的最大輸 098127335 表單編號A0101 第7頁/共19頁 0982046855-0 201105983 出電流Imax (其根據電壓調節器3〇產品的規定來設定的 )及量測次數，根據預設的目標輸出電流Ip的計算公式 Ip-Imaxx (5χρ-5) % (ρ=ι、_ 、n)計算出第p次量 測時電壓調節器30的目標輸出電流，並以量測次數的序 號的遞增順序順次進行量測。在其他實施方式中，也可 以以量測次數的序號的遞減順序順次進行量測。例如， 若電壓調卽器30的最大輪出電流I max為1 〇安培，量測次 數设定為21次’則透過公式ip=imaxx (5χρ_5) % (p = 1 、...、21 )可計算出每次量測電壓調節器3〇的目標輸出 電流Ip分別為0安培、〇. 5安培、1安培、1.5安培、…、 10安培。 [0016] 该負載調整模組532用於讀取電子負載4〇上記錄的流經電 子負載40的電流，並調整電子負載4〇使得電子負載4〇的 電流等於本次量測時電壓調節器30的目標輸出電流，例 如若電子負載4 0的電流大於本次量測時電壓調節器3 〇的 目標輸出電流則控制電:子負，載4 0增加阻抗’若電子負載 40的電流小於本次量測電壓調節器3〇的目標輸出電流則 控制電子負載40減小阻抗，直到電子負載4〇的電流等於 電壓調節器30的目標輸出電流為止。由於電壓調節器3〇 需一段時間才達到熱平衡，在沒達到熱平衡之前進行量 測會造成量測的準確度降低，因此，負載調整模組532還 用於设疋一預设時間，例如3分鐘，這樣可使得電廢調節 器3 0達到熱平衡以提高量測的準確度。 s玄計算柄組5 3 4用於s買取複數組（如3 〇組）電子負載4 〇上 記錄的流經電子負載40的電流及電子負載4〇的輸入電壓 098127335 表單編號A0101 第8頁/共19頁 0982046855-0 [0017] 201105983 根據經電子負载4 〇的電流與電子負載4 〇的輸入電壓 相乘以計算出電壓調節器30的各組輸出功率，並同時讀 取電壓表20所量測電阻R兩端的電壓，根據已知的電阻R 的電阻值及電源10的輸出電壓，計算出電壓調節器3〇的 各組輸入功率’電壓調節器30的功率轉換效率等於每組 輸出功率與每組輸入功率的比值的平均值。例如，假設 其中一組流經電子負載40的電流為l〇u：=ip，電子負載4〇 的輸入電壓為V0U，電壓調節器3〇的輸出功率為p〇u，電 0 壓調節器30的輸入功率為Pin，電源10的輸出電壓為 ，電壓調節器30的輸入電磨為yin，電阻r的電阻值為『， 流經電阻R的電流為I in，電壓調節器3〇的功率轉換效率 為Eff ’ 且VI與r均已知 UP〇u = VouxIou，Iin=(Vl_ Vin) /r，Pin=VinxIin，Eff-P〇u/Pin。 [0018]該判斷模組536用於判斷量測次數的序號是否等於預設的 量測次數，若否，則將量測次數，的序號加丨以進行下一次 β ·« ^1· - , f 的量測。若是，則判斷為已完成董測，並控制電子負載 〇 40將負載設為零’並以顯示方+式告知測試人員已完成量 測。在其他實施方式中，完成量測後，判斷模組536也可 以不需要控制電子負載40將負載設為零及告知測試人員 已完成量測。在其他實施方式中，若以量測次數的序號 的遞減順序順次進行量測，則該判斷模組536判斷量測次 數的序號是否等於最小的量測次數的序號卜若否，則將 量測次數的序號減1以進行下一次的量測。若是，則判斷 為已凡成量測，並控制電子負載40將負載設為零，並顯 不測試結果及告知測試人員已完成量測，測試結果為不 098127335 表單編號A0101 第9頁/共19頁 0982046855-0 201105983 同目標輸出電流時的電Μ調節器3G的功率轉換效率。 [0019] [0020] [0021] [0022] 如圖3所不’本發明功率轉換效率量測方法可對-電壓轉 換叹備如-電壓調節器3{)在不同輸出電流時的功率轉換 效率進行㈣，其祕實财式包括以下步驟： 步驟S1 〇 〇，該i測設定模組5 3 〇預先設定電麼調節器3 〇 的最大輸出電流imax (如10安培）及量測次數（如21次 )，根據預設的目標輸出電流Ip的計算公式Ip=Imaxx ( 5xp-5) % (p=1、…、21)計算出第？次量測時電壓調 節器30的目標輸出電流[P，並將初始量測次數的序號設 定為1。 步驟S102，該負載調整模組5:32調整電子負載4〇使得電 子負載40的電流等於量測次數的序號對應的電壓調節器 30的目標輸出電流。 步驟S104，該計算模組534讀取複數組（知30組）電子 負載40上記錄的流經電子負載4〇的電流I〇ui (i = i、.. 、3 0 )及電子負載.詞.的輸入電堡v o u i (i = l、...、30 )，並根據流經電子負載4〇的電流與電子負載4〇的輸入 電壓相乘IouixVoui (i = l、...、30)以計算出電壓調. 節器30的各組輸出功率P〇ui = 、3〇)。並同時 讀取電壓表20所量測電阻R兩端的電壓Vi ( i = i、..、 30)，根據已知的電阻R的電阻值r及電源ι〇的輸出電壓 VI，計算出電壓調節器30的各組輸入功率Pini= (V1_Vi )/r ( i = l、. . .、30 )。例如，若已知電阻r的電阻值 r = 0. 1歐姆及電源10的輸出電壓Π = 12伏特，其中一組量 098127335 表單編號Α0101 第10頁/共19頁 0982046855-0 201105983 測的電阻R兩端的電壓V i = 6伏特，則此組電I調節器3 〇的 輸入功率Pini= ( 12-6 ) 2/〇. ι = 360 瓦特。 [0023] 步驟S1 06，所述計算模組534計算出電壓調節器3〇的功 率轉換效率Eff，所述功率轉換效率Eff等於每組輸出功 率Poui (i = l、...、30)與每組輸入功率pini ( i = 1、 ...、30)的比值的平均值，即Effp= y^Poui/Pini ❹ [0024] [0025] Ο [0026] 30 (P= 1、. . .、21 ) ’ ρ為量測次數的序號β 步驟S108，該判斷模組536判斷量測次數的序號是否等於 預設的量測次數，若否，則執行步驟sll〇，若是，則執 行步驟S112 ^ 步驟S110，該判斷模組53§將量颠次數的平號加1，返回 執行步驟S102。 ^ ^ ! r：'" | 步驟SI 12，該判斷模組536控制電子負載4〇將負載設為 零，並顯示測試結果及告知測試人員已完成量測，測試 結果為不同目標輸出電流時的電壓調節器3〇的功率轉換 效率。 [0027] 本發明功率轉換效率量測系統6及功率轉換效率量測方法 可透過電腦50自動計算出電壓調節器3〇在不同目標輸出 電流時的功率轉換效率，從而提高量測的效率及準確度 098127335 表單編號Α0101 第11頁/共19頁 0982046855-0 201105983 [0028] 綜上所述，本發明符合發明專利要件，爰依法提出專利 申請。惟，以上所述者僅為本發明之較佳實施例，舉凡 熟悉本案技藝之人士，在爰依本發明精神所作之等效修 飾或變化，皆應涵蓋於以下之申請專利範圍内。 【圖式簡單說明】 [0029] 圖1係本發明功率轉換效率量測系統的較佳實施方式與一 電壓調節器相連的框圖。 [0030] 圖2係圖1的記憶體的框圖。 [0031] 圖3係本發明功率轉換效率量測方法的較佳實施方式的流201105983 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a power conversion efficiency measurement system and method. [Previous Tech Lin] [0002] In order to ensure that the computer performs various functions during use, the tester must perform measurement and verification of various functions of the computer hardware after completing the computer hardware assembly, for example, The power conversion efficiency of a voltage conversion device such as a voltage regulator (V ο 11 age R eg -ulator Device, VRD) is measured. The voltage regulator converts the higher DC voltage to a lower DC voltage to power different wafers on the motherboard, and the power conversion efficiency varies with the connected wafer. The power conversion efficiency of the voltage regulator is an important performance indicator to measure the operating state of the voltage regulator. Therefore, the power converter's power conversion efficiency needs to be measured before the computer motherboard is shipped to verify compliance. [0003] At present, the measurement method of the power conversion efficiency of the voltage regulator is generally measured by the tester to measure the input power and the output power of the voltage regulator, and the measurement results are recorded, and the measurement of each voltage regulator is performed. The time is often as long as several hours, and the tester cannot leave the site during the measurement, and a large amount of data needs to be recorded. This manual measurement method takes a lot of time and effort, and is extremely error-prone and cannot be measured in a short time, so the measurement accuracy and efficiency are extremely low. SUMMARY OF THE INVENTION [0004] In view of the above, it is necessary to provide a power conversion efficiency measurement system and method, which can automatically measure power conversion efficiency and improve measurement efficiency and accuracy. 098127335 Form No. A0101 Page 4 of 19 0982046855-0 201105983 [0005] 0005 〇 A power conversion efficiency measuring system comprising a power source, a resistor, a voltmeter, an electronic load and a measuring device, The power supply is connected to the voltage regulator through a parallel circuit of the resistor and the voltmeter, the voltage regulator is further connected to the computer through the electronic load, the computer is further connected to the voltmeter, the computer comprises a processor and a memory, The processor is coupled to the memory and executes instructions stored in the memory, the memory includes a measurement setting module for presetting the maximum output current and the number of measurements of the voltage regulator, and according to a preset The calculation formula of the target output current calculates the target output current of the voltage regulator at each measurement; a load adjustment module for reading the current recorded on the electronic load flowing through the electronic load, and adjusting the electron The load causes the current of the electronic load to be equal to the target output current of the voltage regulator; a computing module for flowing through the read complex array The current of the sub-load is multiplied by the input voltage of the electronic load to calculate the output power of each group of the voltage regulator, and the voltage across the resistor is measured by the voltmeter, according to the resistance value of the resistor and the power source The output voltage is calculated, and the input power of each group of the voltage regulator is calculated. The power conversion efficiency of the voltage regulator is equal to the average value of the ratio of the output power of all groups to the input power of all groups; and a determining module is used for determining the amount Whether the sequence number of the measurement times exceeds the preset measurement times, and if not, sets the sequence number of the measurement times to perform the next measurement. [0006] A method for measuring power conversion efficiency, comprising the steps of: presetting a maximum output current of a voltage regulator and a number of measurement times, and calculating the voltage adjustment according to a preset calculation formula of the target output current The target output current of the device, and set the order of the initial measurement times 098127335 Form No. 1010101 Page 5 / Total 19 pages 0982046855-0 [0007] No. 201105983; [0008] Reading an electronic load recorded through the electronic load And adjusting the electronic load such that the current of the electronic load is equal to the target output current of the voltage regulator corresponding to the serial number of the measurement times; [0009] the current flowing through the electronic load through the read complex array and the electron The input voltage of the load is multiplied to calculate the output power of each group of the voltage regulator, and the voltage across the resistor measured by a voltmeter is read, and the resistance value of the resistor and the output voltage of the power source are calculated. Each set of input power of the voltage regulator; [0010] calculating the power conversion efficiency of the voltage regulator, the power conversion efficiency being equal to all groups of inputs The average of the ratio of the output power to the input power of all groups; and [0011] determining whether the number of the measurement times exceeds the preset measurement number, and if not, setting the sequence number of the measurement times, returning to perform reading an electronic The step of recording the current flowing through the electronic load on the load. [0012] The power conversion efficiency measurement system and method of the present invention pre-sets the maximum output current and the number of measurement times of the voltage regulator through the measurement setting module, and calculates the target output current of the voltage regulator at each measurement; Taking the current flowing through the electronic load and making the current of the electronic load equal to the target output current of the voltage regulator corresponding to the serial number of the measurement times, finally calculating the output power and input power of each group of the voltage regulator through the read data. And power conversion efficiency; automatic measurement of power conversion efficiency can be achieved until all measurements are completed in sequence, thereby improving the efficiency and accuracy of measurement. 0 098127335 Form No. A0101 Page 6 / 19 pages 0982046855-0 201105983 】 〇 [0013] Please - and referring to FIG. 1 and FIG. 2, the power conversion efficiency measuring system 6 of the present invention can measure the power conversion efficiency of a voltage converting device such as a voltage regulator 30 at different output currents. The preferred embodiment includes a power source 10, a resistor R, a voltmeter 20, an electronic load 40, and a measuring device such as a computer 50. The power supply 1 is connected to the voltage regulator 30 through a parallel circuit of the resistor R and the voltmeter 20. The voltage regulator 30 is also connected to the computer 50 via an electronic load 4, and the computer 50 is also connected to the voltmeter 20. In the present embodiment, the resistor R is a precision resistor having a very small resistance value, and the electronic load 4 is a precision electronic load instrument capable of adjusting a load, which can provide voltage and current information such as an input voltage of the recording electronic load 40 and flow through The electrical power is not full and 40, and the electronic load 40 completely converts the input electrical energy into thermal energy dissipation. The power supply 10 can output a DC voltage through the resistor R to divide the voltage regulator 30. The voltage regulator 3 turns this DC voltage to another DC voltage output to the electronic load 4〇. The voltmeter 20 can accurately & measure the voltage across the resistor R. The computer 50 calculates the efficiency of the voltage regulator 30. In the present embodiment, the computer 50 is connected to the voltmeter 20 and the electronic load 40 via a USB (Universal Serial Bus) interface. In other embodiments, the computer 50 can also pass other interfaces such as RS232. The interface is connected to the voltmeter 20 and the electronic load 40. [0014] The computer 50 includes a processor 52 and a memory 53. The processor 52 is coupled to the memory unit 53 and executes instructions stored in the memory 53. The memory unit 53 includes a measurement setting module 530, a load adjustment module 532, a calculation module 534, and a determination module 536. [0015] The measurement setting module 530 is configured to preset the maximum transmission of the voltage regulator 30. 098127335 Form No. A0101 Page 7 / 19 pages 0982046855-0 201105983 Output current Imax (according to the regulation of the voltage regulator 3〇 product) According to the preset target output current Ip calculation formula Ip-Imaxx (5χρ-5) % (ρ=ι, _, n), the p-th measurement voltage regulator 30 is calculated. The target output current is sequentially measured in ascending order of the number of measurement times. In other embodiments, the measurement may be performed sequentially in descending order of the number of measurement times. For example, if the maximum output current I max of the voltage regulator 30 is 1 〇 amp, and the number of measurements is set to 21 times, then the formula ip=imaxx (5χρ_5) % (p = 1 , ..., 21 ) is passed. The target output current Ip of each measurement voltage regulator 3 可 can be calculated to be 0 amps, 安 5 amps, 1 amp, 1.5 amps, ..., 10 amps, respectively. [0016] The load adjustment module 532 is configured to read the current flowing through the electronic load 40 recorded on the electronic load 4〇, and adjust the electronic load 4〇 so that the current of the electronic load 4〇 is equal to the voltage regulator of the current measurement. The target output current of 30, for example, if the current of the electronic load 40 is greater than the target output current of the voltage regulator 3 本 during the current measurement, the control power: sub-negative, load 40 increases the impedance 'if the current of the electronic load 40 is less than this The target output current of the sub-measurement voltage regulator 3〇 then controls the electronic load 40 to reduce the impedance until the current of the electronic load 4〇 is equal to the target output current of the voltage regulator 30. Since the voltage regulator 3 takes a while to reach the heat balance, the measurement before the thermal balance is not achieved may cause the accuracy of the measurement to decrease. Therefore, the load adjustment module 532 is also used to set a preset time, for example, 3 minutes. This allows the electric waste regulator 30 to reach thermal equilibrium to improve the accuracy of the measurement. s Xuan calculation handle group 5 3 4 for s buy complex array (such as 3 〇 group) electronic load 4 记录 recorded current flowing through electronic load 40 and electronic load 4 〇 input voltage 098127335 Form No. A0101 Page 8 / 19 pages 0982046855-0 [0017] 201105983 Multiply the current through the electronic load 4 与 with the input voltage of the electronic load 4 以 to calculate the output power of each group of the voltage regulator 30, and simultaneously read the voltmeter 20 The voltage across the resistance R is measured. According to the known resistance value of the resistor R and the output voltage of the power source 10, the input power of each group of the voltage regulator 3' is calculated. The power conversion efficiency of the voltage regulator 30 is equal to the output power of each group. The average of the ratio of the input power of each group. For example, suppose that one of the currents flowing through the electronic load 40 is l〇u:=ip, the input voltage of the electronic load 4〇 is V0U, the output power of the voltage regulator 3〇 is p〇u, and the electric zero regulator 30 The input power is Pin, the output voltage of the power supply 10 is yin, the input electric grind of the voltage regulator 30 is yin, the resistance value of the resistor r is 『, the current flowing through the resistor R is I in, and the power conversion of the voltage regulator 3〇 The efficiency is Eff ' and both VI and r are known as UP〇u = VouxIou, Iin=(Vl_ Vin) /r, Pin=VinxIin, Eff-P〇u/Pin. [0018] The determining module 536 is configured to determine whether the serial number of the measurement times is equal to a preset number of measurement times, and if not, the number of the measurement times is incremented to perform the next β · « ^1 · - , Measurement of f. If yes, it is judged that the Dong measurement has been completed, and the electronic load 控制 40 is controlled to set the load to zero' and the tester is informed that the tester has completed the measurement. In other embodiments, after the measurement is completed, the determination module 536 can also control the electronic load 40 to set the load to zero and inform the tester that the measurement has been completed. In other embodiments, if the measurement is performed in the descending order of the sequence number of the measurement times, the determination module 536 determines whether the sequence number of the measurement times is equal to the sequence number of the smallest measurement times, and if not, the measurement is performed. The number of times is decremented by 1 for the next measurement. If yes, it is judged that the measurement has been performed, and the electronic load 40 is controlled to set the load to zero, and the test result is displayed and the tester is informed that the measurement has been completed. The test result is not 098127335 Form No. A0101 Page 9 of 19 Page 0982046855-0 201105983 Power conversion efficiency of the power regulator 3G with the target output current. [0022] [0022] As shown in FIG. 3, the power conversion efficiency measurement method of the present invention can be used for the voltage conversion efficiency of the -voltage conversion, such as - voltage regulator 3{) at different output currents. Carrying out (4), the secret financial formula includes the following steps: Step S1 〇〇, the i measurement setting module 5 3 〇 presets the maximum output current imax of the regulator 3 ( (eg 10 amps) and the number of measurements (eg 21 times), according to the preset target output current Ip calculation formula Ip = Imaxx (5xp-5) % (p = 1, ..., 21) to calculate the first? The target output current [P of the voltage regulator 30 is measured in the sub-measurement, and the number of the initial measurement times is set to 1. In step S102, the load adjustment module 5:32 adjusts the electronic load 4 such that the current of the electronic load 40 is equal to the target output current of the voltage regulator 30 corresponding to the serial number of the measurement times. In step S104, the calculation module 534 reads the current I〇ui (i = i, .. , 3 0 ) and the electronic load. Words recorded on the electronic load 40 of the complex array (known to 30 groups). The input electric voui (i = l, ..., 30), and multiplied by the input voltage of the electronic load 4〇 according to the current flowing through the electronic load 4〇 IouixVoui (i = l, ..., 30) To calculate the output power of each set of voltage regulators P〇ui = , 3〇). At the same time, the voltage Vi (i = i, .., 30) across the measuring resistor R of the voltmeter 20 is read, and the voltage regulation is calculated according to the known resistance value r of the resistor R and the output voltage VI of the power source ι. Each set of input power of the device 30 is Pini = (V1_Vi) / r (i = l, . . . , 30). For example, if the resistance r of the resistor r is known to be r = 0.1 ohm and the output voltage of the power supply 10 Π = 12 volts, one of the groups 098127335 Form number Α 0101 Page 10 / Total 19 pages 0982046855-0 201105983 Measured resistance R The voltage at both ends is V i = 6 volts, then the input power of this set of I regulator 3 〇 is Pini = ( 12-6 ) 2 / 〇. ι = 360 watts. [0023] Step S106, the calculation module 534 calculates a power conversion efficiency Eff of the voltage regulator 3〇, the power conversion efficiency Eff is equal to each set of output power Poi (i = l, ..., 30) and The average of the ratio of the input powers pini (i = 1, ..., 30) of each group, that is, Effp = y^Poui/Pini ❹ [0024] 00 [0026] 30 (P = 1, . . . 21) ' ρ is the number of measurement times β step S108, the determining module 536 determines whether the number of the measurement times is equal to the preset number of measurement times, and if not, executing step sll 〇, and if yes, executing step S112 In step S110, the judging module 53 adds 1 to the flat number of the number of times, and returns to step S102. ^ ^ ! r: '" | Step SI 12, the judging module 536 controls the electronic load 4 to set the load to zero, and displays the test result and informs the tester that the measurement has been completed, and the test result is the output current of different targets. The power conversion efficiency of the voltage regulator 3〇. [0027] The power conversion efficiency measurement system 6 and the power conversion efficiency measurement method of the present invention can automatically calculate the power conversion efficiency of the voltage regulator 3 〇 at different target output currents through the computer 50, thereby improving the efficiency and accuracy of the measurement. Degree 098127335 Form No. 1010101 Page 11/19 pages 0982046855-0 201105983 [0028] In summary, the present invention meets the requirements of the invention patent, and patent application is filed according to law. However, the above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art of the present invention should be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS [0029] FIG. 1 is a block diagram showing a preferred embodiment of a power conversion efficiency measuring system of the present invention connected to a voltage regulator. 2 is a block diagram of the memory of FIG. 1. 3 is a flow of a preferred embodiment of the power conversion efficiency measurement method of the present invention.
【主要元件符號說明】 功率轉換效率 量測系統 6 電源 10 電壓表 20 電壓調節器 30 電子負載 40 電腦 50 處理器 52 記憶體 53 量測設定模組 530 負載調整模組 532 計算模組 534 判斷模組 536 098127335 表單編號A0101 第12頁/共19頁 0982046855-0[Main component symbol description] Power conversion efficiency measurement system 6 Power supply 10 Voltmeter 20 Voltage regulator 30 Electronic load 40 Computer 50 Processor 52 Memory 53 Measurement setting module 530 Load adjustment module 532 Calculation module 534 Judgment module Group 536 098127335 Form No. A0101 Page 12 of 19 0982046855-0