200913298 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種光感知系統及方法，特別是指一 種可隨溫度變化調整工作電壓的光感知系統及方法。 【先前技術】 一般用於雷射光檢知的判斷系統（例如光纖斷點備測 儀）中，通常是採用-至數個雪崩光二極體（Avaianche Photodiode，APD)來作為檢知元件，然而溫度影響雪崩光 二極體的特性變化很大，所以當預先調校好一個固定2度 下的工作電壓後，往往會因為實際溫度的改變，而讓 調校出的工作電壓不符合實際需求，尤其是當實際的工 電壓超出雪崩光二極體的最佳工作電壓時，會導致檢知作 號的雜訊成分大幅增加，於是產生信號失真或誤差，所以 就會造成判斷上的不準確或無法判斷的狀況。 【發明内容】 本發明的-目的是在於提供—種可隨溫度 調整工作電壓的光感知系統。 本發明的另一目沾θ / t 的疋在於提供一種可隨溫度變化調敕 工作電壓的光感知方法。 ^正 ^本發明可隨溫度變化調整工作電麼的光感知系 ，·充包含一發光單元、— ” 九檢知兀件、一類比/數位轉換器、 -數位/類比轉換器，及—控制單元。 :亥發光早疋提供-固定強度的測試光束。 该光檢知元件合 括一陽極端及一陰極端，該光檢知元 200913298 件在純粹使用該測試光束照射下可形成—橫跨於該陽、陰 極知的光電壓’該光電壓值在固定該測試光束下是隨著溫 度變化。 違類比/數位轉換器可接收該光電壓並對應輸出一數位 檢知信號。 。亥數位/類比轉換器是用以提供一工作電壓。 。該杈制單7是電連接於該發光單元、該類比/數位轉換 -該數位/類比轉換器，並内建一光電壓/溫度對照表，及 ’皿度’工作電壓對照表’該控制單^是先經由該類比/數位 轉換器以取得該光電壓的數位檢知信號，再依序經由該光 電：/溫度對照表與該溫度/工作電壓對照表做比對，然後能 確定該工作電壓的最佳值並經由該數位·比轉換器提供到 /光檢A 70件’ 4光檢知元件在加人該工作電壓及一外界 光束下會經由該陽極端輸出_反應出該外界光束變化的檢 知信號。 而本發明可隨溫度變化調整工作電壓的光感知方法是 詩調整—光檢知㈣的工作電壓，該㈣知㈣包括一 1%極端及一陰極端，卄/± m ^並在純杵使用一測試光束照射下可形 成-橫跨於該陽、陰極端的㈣壓，該光電壓值在固定該 測試光束下是隨著溫度變化，該方法包含以下步驟： ⑷純粹制該測試光束照射該光檢知元件，並取得橫跨 於"亥陽、陰極端的光電壓值。 (B )將該光電壓值與一、^ ^ 對，得出目前溫度值。…壓/溫度對照表做比 200913298 (C)將目前溫度值與—預先建立的溢度/工作電壓對照表做 比對，得出目如溫度下的最佳工作電壓值。 ⑼以該步驟（C)所得出的卫作電壓值加人—工作電壓 到該光檢知元件，該光檢知元件在-外界光束照射下 會經由該陽極端輸出一反應出該外界光束變化的檢知 信號。 ,本發明的有益效果在於：經由掌握溫度對該光電壓的 =響’可以先藉由取得該光電壓值，進而準確判斷出目前 溫度，再將溫度值和預先實驗得出的溫度/工作電壓對照表 做比對就可以得出目前溫度下的最佳工作電壓值，於是 能讓該光檢知71件在不同環境溫度下都有最佳的工作電壓 ，進而獲得最精準的檢知信號。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 、下配σ參考圖式之較佳實施例的詳細說明中，將枯 的呈現。 疋 、圖1所示，本發明可隨溫度變化調整工作電壓的光 感知系統200的較佳實施例是應用於一信號收發裝置中， 光纖斷點❹丨儀，該光感知系統200 &含-發光單元 20、—光檢知元件3〇、一第一切換開關41、一第二切換開 —動早7G 50、一類比/數位轉換器60、一數位/來 比轉換㈣，及—控制單元8〇。 " 試/玄發光早元20是提供一具有預定波長與預定強度的測 ^ 在本較佳實施例中，該測試光束λ的波長為 200913298 1550nm ’ 光強度為-lOdbm。 該光檢知元件30包括一第―端及一 二端貫際上是-陽極端A及—陰極端κ，該奸知=—、 在純’使用該測試光束又照射下可形成—樺跨於：陽3: ㈣Η的電信號，該電信號在本較佳實施例中：―光： ::Ρ，该先電壓Vp值在固定該測試光束λ強度的條件下： 隨者溫度變化，該光檢知元件3G在本較佳實施例中是 接收7L件，例如採用雪崩光二 先 APD)。 11 (Avalanche Photodiode, 該第-、二切換開關41、42是分別電連 元件30的陽、降炼唑Δ亿n r 知 农極知A K且焚控於該控制單元8〇，哕 —切換開關41還電連接於該類比/數位轉換器60及^置 於該光感知系，统200以外的其它電路2〇1，該第二切換 42還電連接於該驅動單元5Q及—接地端，在本實施例中， 該第-、二切換„ 41、42分別是採用_第_繼電器及— 第二繼電器。 °亥驅動單凡5〇是電連接與該數位/類比轉換器7〇，並 可調整地經由該第二切換開關42提供該光檢知元：3〇所 需的-工作電a v。，t該測試光束λΜ閉後，該光檢知元 件30可在加入該工作電壓ν。及一外界光束λ，的條件下經 由該陽極端Α輸出一反應出該外界光束λ，變化的檢知信號 ’該工作電壓V。是施加於該光檢知元件30上的逆向偏壓。 5亥類比/數位轉換器60可接收類比訊號，例如在本較佳 實施例中的光電壓Vp並能對應輸出一數位檢知信號提供到 200913298 該控制單元80。 該數位/類比轉換器7〇可以接收該控制單元8〇所輪出 的數位訊號，並轉換成類比型態的工作電壓v。輸出，二數 位訊號的内容含有一控制該工作電壓v。大小的電壓參數， 在本較佳實施例中，由於該光檢知元件30所需的工作電壓 V。較高（約為37V〜38v)，因此該數位/類比轉換器7〇還 必須經過該驅動單元5G的升壓才能提《光檢知元件3〇 足狗的工作電壓V。。 該控制單元80是電連接於該發光單元2〇、該第一切換 開關4卜該第二切換開關42、該類比，數位_ 6〇、該 數位/類比轉換器70’並内建有一光電壓/溫度對照表（如以 下表。，及一溫度/工作電麼對照表（如以下表2)，配入圖 2所示’該光電心溫度對照表是在該测試光束^照射下 ，依據不同溫度實驗所得到的數據，該溫度/卫作電壓對日s 表也是經由實驗後所得出的數據。 …、 當使用者啟動該光感知I统時，由於每次啟動p 的環境溫度都可能改變，因此該控制單元8Q會先㈣1 ^測試光束又以及該類比/數位轉換器6〇以取得該光電舞 P的數位檢知信號，再依序經由該光電墨/溫度對照表盘今 溫度/工作電_表做比對’然後就能確定該工作電屡、； 的最佳值並經由該數位/類比轉換^ 70、該驅動單元5 。 該光檢知元件30,更詳細的說明如以下本發明可. 度.交化調整工作電壓的光感知方法。 * 200913298 光電壓V 0.425 溫度°c -5 0.415200913298 IX. Description of the Invention: [Technical Field] The present invention relates to a light sensing system and method, and more particularly to a light sensing system and method that can adjust an operating voltage with temperature changes. [Prior Art] Generally, a judging system for laser light detection (for example, a fiber breakpoint tester) usually uses - to several avalanche photodiodes (APD) as detection elements, but the temperature. The characteristics affecting the avalanche light diode vary greatly. Therefore, when the operating voltage fixed at 2 degrees is adjusted in advance, the operating voltage that is adjusted is often not in line with the actual demand due to the change of the actual temperature, especially When the actual working voltage exceeds the optimal working voltage of the avalanche light diode, the noise component of the detection number is greatly increased, and thus signal distortion or error is generated, so that the judgment is inaccurate or undeterminable. situation. SUMMARY OF THE INVENTION The object of the present invention is to provide a light sensing system that can adjust the operating voltage with temperature. Another object of the present invention is to provide a light sensing method that can modulate the operating voltage as a function of temperature. ^正^ The invention can adjust the light perception system of the working electricity with temperature change, the charge includes a light-emitting unit, - "nine detection components, a analog/digital converter, a digital/analog converter, and - control The unit is provided with a fixed-strength test beam. The light detecting element includes an anode end and a cathode end, and the photodetector element 200913298 can be formed by using the test beam alone - across The positive and negative photovoltage voltages are changed with temperature under the fixed test beam. The violation ratio/digital converter can receive the photovoltage and output a digital detection signal correspondingly. The converter is used to provide an operating voltage. The control unit 7 is electrically connected to the lighting unit, the analog/digital conversion-the digital/analog converter, and has a built-in photovoltage/temperature comparison table, and ' The control unit 'the operating voltage comparison table' is a digital detection signal obtained by the analog/digital converter to obtain the photovoltage, and then sequentially via the photoelectric:/temperature comparison table and the temperature/operating voltage pair Align the meter according to the table, and then determine the optimal value of the working voltage and provide it to / photodetection A through the digital-to-digital converter. 70. The light detecting component will be added under the working voltage and an external beam. The detection signal of the change of the external light beam is reflected by the anode end output. The light sensing method for adjusting the working voltage according to the temperature variation of the present invention is a working voltage of poetry adjustment-light detection (4), and (4) knowing (4) includes a 1 % extreme and one cathode end, 卄 / ± m ^ and can be formed by pure test beam irradiation with a test beam - across the (four) voltage of the anode and cathode terminals, the photovoltage value is fixed with the test beam Variation, the method comprises the following steps: (4) purely manufacturing the test beam to illuminate the light detecting component, and obtaining a photovoltage value across the "Haiyang and cathode terminals. (B) The photovoltage value is one, ^^ Yes, the current temperature value is obtained.... The pressure/temperature comparison table is compared with 200913298 (C). The current temperature value is compared with the pre-established overflow/operating voltage comparison table to obtain the best work at the temperature. Voltage value. (9) Obtained in step (C) The voltage value of the operating voltage is applied to the light detecting component, and the light detecting component outputs a detecting signal reflecting the change of the external light beam through the anode end under the illumination of the external light beam. The beneficial effect is that the sound voltage of the light voltage can be obtained by grasping the temperature of the light voltage, thereby accurately determining the current temperature, and comparing the temperature value with the pre-experimental temperature/operating voltage comparison table. The best working voltage value at the current temperature can be obtained, so that the light can be detected that 71 pieces have the best working voltage at different ambient temperatures, thereby obtaining the most accurate detection signal. The foregoing and other technical contents, features, and advantages of the present invention will be apparent in the detailed description of the preferred embodiments of the present invention. As shown in FIG. 1, a preferred embodiment of the optical sensing system 200 for adjusting the operating voltage with temperature changes is applied to a signal transceiving device, and the optical sensing system 200 & - illuminating unit 20, - light detecting element 3 〇, a first switching switch 41, a second switching on and off 7G 50, an analog/digital converter 60, a digital/combination ratio conversion (4), and - control Unit 8〇. " Test/Xuanguang 20 is to provide a measurement having a predetermined wavelength and a predetermined intensity. In the preferred embodiment, the wavelength of the test beam λ is 200913298 1550 nm 'the light intensity is -10 dBm. The light detecting component 30 includes a first end and a second end which are - an anode end A and a cathode end κ, which are known to be formed in a pure 'light using ' the test beam In: yang 3: (d) 电 electrical signal, in the preferred embodiment: - light: :: Ρ, the first voltage Vp value is fixed under the condition of the test beam λ intensity: In the preferred embodiment, the light detecting element 3G receives 7L pieces, for example, avalanche light first APD. 11 (Avalanche Photodiode, the first and second switching switches 41, 42 are respectively yang, zirconia, Δ n n 知 极 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且 且Also electrically connected to the analog/digital converter 60 and other circuits 2〇1 disposed outside the optical sensing system 200, the second switching 42 is also electrically connected to the driving unit 5Q and the grounding end. In the embodiment, the first and second switching „41, 42 respectively adopt _第_ relay and ——the second relay. The ̄海 drive single 〇5〇 is electrically connected with the digital/analog converter 7〇, and can be adjusted The light detecting element is provided via the second switching switch 42: the required operating voltage av. After the test beam λ is closed, the light detecting component 30 can be added to the working voltage ν. Under the condition of the external light beam λ, the external light beam λ is outputted through the anode terminal, and the detected signal 'the operating voltage V' is a reverse bias applied to the light detecting element 30. /digital converter 60 can receive an analog signal, such as the photovoltage in the preferred embodiment Vp can also provide an output digital detection signal to the control unit 80 of 200913298. The digital/analog converter 7 can receive the digital signal rotated by the control unit 8 and convert it into an analog type operating voltage v. The output, the content of the binary signal contains a voltage parameter that controls the magnitude of the operating voltage v. In the preferred embodiment, the operating voltage V required by the optical detecting component 30 is higher (about 37V~). 38v), therefore, the digital/analog converter 7A must also be boosted by the driving unit 5G to provide the operating voltage V of the optical detecting component 3. The control unit 80 is electrically connected to the lighting unit. 2, the first switch 4, the second switch 42, the analogy, the digit_6〇, the digit/analog converter 70' and a built-in photovoltage/temperature comparison table (such as the following table, and A temperature/working power comparison table (such as Table 2 below) is shown in Figure 2. The photoelectric temperature comparison table is the data obtained by experiments under different temperature tests under the irradiation of the test beam. Guardian voltage is also a The data obtained from the experiment. When the user activates the optical sensing system, since the ambient temperature of each startup p may change, the control unit 8Q first (4) 1 ^ test beam and the analog/digital The converter 6 〇 obtains the digital detection signal of the photoelectric dance P, and then sequentially compares the temperature/working power _ table through the photoelectric ink/temperature comparison dial, and then can determine the working power; The value is converted to the drive unit 5. The light detecting element 30 is described in more detail below. The light sensing method for adjusting the operating voltage can be as follows. * 200913298 Photovoltage V 0.425 temperature °c -5 0.415
參閱圖 1、？、2 6ιΐ·- _!，<· 3所不’本發明可隨溫度變化調整工作 電壓的光感知方法的赫4y丨β β 法包含以下步 步驟100 去的較佳貝施例疋運用上述系統200,該方 vi- IV -τ~ .ι-〜 步驟110 純粹使用該測試光束λ照射該光檢知元件30， 並取得橫跨於㈣、陰極端Α、κ的光電壓Vp 值’運作該步冑_時，該控制單元8G會控制 該第一切換開關41使得該光檢知S件30的陽極 U與該㈣/數位轉換器60電連接，並控制該 第-切換開關42使得該陰極端κ接地，以及控 制該發光單元20 _測試光束；I照射該光檢 知凡件30,該測試光束λ符合實驗時的波長及 光強度’進而能得到一隨著溫度變化的光電壓 VP接者透過該類比/數位轉換器6〇將該光電壓 VP值提供給該控制單元8G做比較分析。 控制該發光單S 2G關閉該光束λ，並透過該控 制單元8〇的運算1該光電壓^值與-預先建 亡的光電壓/溫度對照表（表1)做比對，得出目 可溫度值，例如當_ Vp值為〇·康時，即 10 200913298 表示目前溫度為30°C。 步驟120See Figure 1,? 2 6 ΐ ΐ - _ & & 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 本 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫 赫System 200, the party vi-IV - τ~ .ι-~ Step 110 illuminates the light detecting element 30 purely using the test beam λ, and obtains a photovoltage Vp value across the (four), cathode terminal Α, κ In the step 胄, the control unit 8G controls the first switch 41 to electrically connect the anode U of the light detecting component 30 with the (four)/digital converter 60, and controls the first-switch 42 to make the The cathode terminal κ is grounded, and the light-emitting unit 20_test beam is controlled; I illuminates the light detecting unit 30, and the test beam λ conforms to the wavelength and light intensity of the experiment', thereby obtaining a photovoltage VP with temperature change. The receiver supplies the photovoltage VP value to the control unit 8G through the analog/digital converter 6 for comparative analysis. Controlling the light-emitting single S 2G to turn off the light beam λ, and through the operation 1 of the control unit 8〇, the light voltage value is compared with the pre-established light voltage/temperature comparison table (Table 1), and the purpose is obtained. The temperature value, for example, when the _Vp value is 〇·康, ie 10 200913298 indicates that the current temperature is 30 °C. Step 120
繼續透過該控制單元80的目HU 與一預先建立的溫度/工作電壓對照表（表2)做 比：’得出目前溫度下的最佳工作電壓值，例如 目/溫度為阶時，即表示該光檢知元件30的 隶佳工作電壓V。為42.35V。 步騍130 使用該控制單元8G控制㈣1換開關μ使得 該光檢知元件3〇的陽極端Μ該光感知系統 細以外的其它電路201電連接，並控制該第二 切換開關42使得該陰極端κ與該驅動單元刈 電連接，此時該控制單元8〇會依序經由該數位/ 類比轉換器7〇、該驅動單元50將該步驟12〇所 得出的工作電壓ν。值提供到該光檢知元件％， 而會運用到該光檢知元件3〇的其它電路2〇1就 能針對-外界光束又，做偵測，並獲得精準的檢 知信號。 所以 電堡v的旦透：上述說明可以發現’經由掌握溫度對該光 判斷/ 以先藉由取得該光電屢、值’進而準確 子J斷出目前溫度，再將，θ择 電壓對日度值和預先實驗得出的溫度/工作 璧/7表做比對，就可以得出目前溫度下的最佳工作電 溫度°下都達於^能讓該光檢知元件3G的工作狀態在不同環境 精準益Hr化，進而使得該光感知系、统細能輪出 ，’，、决的檢知信號以提供使用。 惟以上所述者，僅為本發明之較佳實施例而已，當不 11 200913298 ，以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及說明書内容所作之簡單的等效變化與修飾，比 本發明專利涵蓋之範圍内。 / ，皆仍屬 【圖式簡單說明】 圖1疋一示意圖，說明本發明可隨溫度變化 電壓的光感知系統的較佳實施例； 心工作 圖2疋—曲線圖，說明上述該較佳實施例中，〜 出的光電壓與溫度關係曲線；及 I驗得 疋—示意圖，說明本 電壓的光感知方法的較佳實施例 12 200913298 【主要元件符號說明】 200 ··· ----光感知糸統 42…… •…第二切換開關 20…… •…發光單元 50••… •…驅動單元 λ ·..· •…測試光束 60…… •…類比/數位轉換器 λ，…· •…外界光束 70…… •…數位/類比轉換器 30…· 光檢知元件 80…… •…控制單元 Α…… •…陽極端 201 ··· •…其它電路 K…… •…陰極端 100… …·步驟 VP••… •…光電壓 110… ----步驟 V〇 …·· •…工作電壓 120… —步驟 41…… •…第一切換開關 130… ----步驟 13Continue to compare the target HU of the control unit 80 with a pre-established temperature/operating voltage comparison table (Table 2): 'To obtain the optimal operating voltage value at the current temperature, for example, if the mesh/temperature is the order, The light detecting element 30 has a good operating voltage V. It is 42.35V. Step 130 uses the control unit 8G to control (4) 1 change switch μ such that the anode end of the light detecting element 3〇 is electrically connected to other circuits 201 other than the light sensing system, and the second switching switch 42 is controlled such that the cathode end κ is electrically connected to the driving unit ,, and at this time, the control unit 8 依 sequentially passes the digital/analog converter 7 〇, the driving unit 50 to the operating voltage ν obtained by the step 12 。. The value is supplied to the light detecting element %, and the other circuit 2〇1 which is applied to the light detecting element 3〇 can detect the external light beam and obtain an accurate detection signal. Therefore, the transparency of the electric castle v: the above description can be found that 'the light is judged by grasping the temperature / the first time by obtaining the photoelectric value, and then the current value is cut off, and then the θ is selected to the current temperature. The value is compared with the pre-experimental temperature/work 璧/7 table, and it can be concluded that the optimum operating electric temperature at the current temperature is equal to ^, so that the working state of the optical detecting component 3G is different. The environment is accurate and Hr is made, so that the light perception system and the fine system can turn out, and the detection signals of ', and the decision are provided for use. However, the above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent change made by the scope of the present invention and the contents of the specification. Modifications are within the scope of the invention. / , are still [schematic description of the drawings] Figure 1 is a schematic diagram showing a preferred embodiment of the light sensing system of the present invention which can vary with temperature; a heart working diagram 2 - a graph illustrating the preferred implementation described above In the example, the relationship between the photovoltage and the temperature of the output is shown; and the I-accuracy-schematic diagram illustrates a preferred embodiment 12 of the photo-sensing method of the present voltage. 200913298 [Description of main component symbols] 200 ··· Perceptual system 42... •...Second diverter switch 20... •...Lighting unit 50••... •...Drive unit λ ·····...Test beam 60... •...analog/digital converter λ,...· •...External beam 70... •...Digital/analog converter 30...·Light detection element 80... •...Control unitΑ...•...Anode terminal 201··· •...other circuit K... •...cathode end 100... Step VP••... •...Photovoltage 110... ----Step V〇...··•...Operating voltage 120...-Step 41... •...First switch 130...-Step 13