1282845 九、發明說明： 【發明所屬之技術領域】 本發明係為一種渴流流量計之智慧型信號處理器，尤指一種 處理裔與渴流流量計配合使用，且該處理器係利用傳立葉轉換演 异法（Fourier Transformation )配合自相關演算法 (Auto-Correlation)或相位鎖定迴路演算法（s〇ftware fase Locked Loop)，即可得到精確的渦流溢放頻率。 【先前技術】 按，流體流經柱狀體所產生之渦流溢放現象（v〇rtex shedding) ’係為流體力學領域的一典型物理問題，多年來受到相 當熱烈的囑目與研究。由於渴流在溢放時會造成流體壓力變化， 因此吾人可利用此種壓力變化測知渦流溢放的頻率，再藉由該涡 流溢放頻率而計算出流體的流量。其中，渦流溢放現象具有一廣 為熟知的特性係為在適當的雷諾數範圍内，流體之渦流^放頻率 與流體之流速間呈線性關係，而此一特性已被工業界應用製造出 作為彳貞測渴流溢放頻率之渦流流量計。 請參考第一圖所示，係為習知渦流流量計丨之分解示意圖； 該渦流流量計1係包含渦流產生器2、感測元件3 ^ •女 渦流^生器2係以-平板21垂直於鈍型體 f生态^之截面呈τ型狀，具有提升渦流溢放信號品質之作用（可 爹考中華民國專利第071182號專利及美國專利第5351559號專 利），並於鈍型體22之兩側邊適當處分別設有壓力孔221，該壓力 孔221，通孔222相連接；該感測元件3係以其探棒31插置於渦 流產生器2之通孔222，使感測元件3之探棒31可藉由壓力孔221 感測到流體於職溢放過輯造成之壓力獅，制元件3即可 由流體巧力變化而測制流溢放解，制元件3再將所測得 之渦流温放頻率之信號，傳送給外接之電子裝置，由電子裝置係 5 12828451282845 IX. Description of the invention: [Technical field of the invention] The present invention relates to a smart signal processor for a thirsty flowmeter, and more particularly to a treatment and thirst flowmeter, and the processor utilizes a directional leaf Fourier Transformation with Auto-Correlation or s〇ftware fase Locked Loop can get accurate eddy current frequency. [Prior Art] According to the fact that the vortex overflow phenomenon (v〇rtex shedding) produced by the fluid flowing through the column is a typical physical problem in the field of fluid mechanics, it has received considerable attention and research for many years. Since the thirst flow causes a change in fluid pressure during the overflow, we can use this pressure change to measure the frequency of the eddy current overflow, and then calculate the flow rate of the fluid by the eddy current frequency. Among them, the eddy current overflow phenomenon has a well-known characteristic that in the range of the appropriate Reynolds number, the eddy current frequency of the fluid has a linear relationship with the flow velocity of the fluid, and this characteristic has been manufactured and applied by the industrial application. A vortex flowmeter that measures the frequency of thirsty flow. Please refer to the first figure, which is a schematic exploded view of a conventional vortex flowmeter; the vortex flowmeter 1 includes a vortex generator 2, a sensing element 3 ^ • a female eddy current generator 2 - a flat 21 vertical The cross-section of the blunt body f is a τ-shaped cross section, which has the function of improving the quality of the eddy current overflow signal (refer to the patent of the Republic of China Patent No. 071182 and the patent of US Pat. No. 5,351,559), and is in the blunt body 22 A pressure hole 221 is disposed at each of the two sides, and the pressure hole 221 is connected to the through hole 222. The sensing element 3 is inserted into the through hole 222 of the eddy current generator 2 by the probe 31 to make the sensing element The probe 31 of the 3 can sense the pressure lion caused by the fluid overflowing through the pressure hole 221, and the component 3 can be measured by the fluid force to measure the overflow and release, and the component 3 will be measured again. The signal of the eddy current temperature is transmitted to the external electronic device by the electronic device system 5 1282845
將感測元件3所傳送之信號作濾、波及信號運算，即得知流體之疗 速及瞬時體積流率；該圓管體4係於適當處設有穿孔41，可供= 流產生器2固設，且該圓管體4可與具有流體流動之管路連 可使流經該圓管體4之流體藉由渦流產生器2形成溢放之渦流/ 然，習知渦流量計1在偵測渦流溢放頻率時，因感測元件& 測得之渦流溢放信號通常被雜訊所污染，於感測元件3所輸出之 信號傳送至外接之電子裝置時，雖會以濾波電路先行將雜^滤心 再以該信號作渴流溢放頻率的計算，但感測元件3所測得之乃、、宁、 溢放彳B號係在低雜訊比的情況下，則電子裝置之漁波效果不JJtL ^ 則電子裝置在作渦流溢放頻率的計算時即會有誤^產1，致^祚 流量自動控制時造成系統的不穩定。 Τ 【發明内容】 有鑑於此’本發日月人係針對習知渦流流量計所造成 上的缺失之處，乃萌思創作改良，經長期時間研究改良 言^出Γ種具有追縱能力’且可隨著流體之流速變化而測量^ =率’改善習知渦流流量計未能盡理想之處，始有本]發:: 本發明係為一種渴流流量計之智暴别彳古缺_ # „ 量計係包含有嶋生II、電子裝置:^流流 流產生器係以-平板垂直於鈍型體而組^、 產生器固設，其主要包含有放大=哭及亥!與渴流 號處理n係以數位信號處理架構模式^’該信 包含有濾波單元及頻率計算單元·、兮六:1、 體杀構，且其 器之平板上；該圓管體係可供渦流渦流產生 可與具有流體流動之管路遠技，二口限位，且該圓管體 流產生器形成溢放之渦流。σ *經_官體之流體藉由渦 爰是，本發明之目的在於，藉由治旦 理器，係以數位信號處理架構模式作為 6 1282845 0. 35%之 曾、、間改變時而對渦流溢放頻率有追蹤能力，且可降低計 放頻率之誤差；再者，在越流速最高流速與最低流速 ' π ，不會因差距過大而影響量測之精確度，同時在流量範 ，义至509 mVhr的情況下，其精確度約在〇· 59% 間，/、精確度較傳統處理方式提升約2〜3倍。 實施方式】 關=本發明之技射段，鱗數齡實施顺配合圖式於下 又進^亍祥細說明，俾供鈞上了解並認同本發明。 i先，請參閱第二圖至第四圖所示，係為渦流流量計6之立體 分解示賴及其整體雜方翻；觸献料6係包含有 渦生器7、電子裝置8、感測元件9及圓管體1〇，其中， 该渦流產生器7係以一平板71垂直於鈍型體72而組成，且該渦 產生器7之截面呈τ型狀,· 抑該電子裝置8係與渦流產生器7固設，該電子裝置8係包含有放 大态8、濾波器82及信號處理器83 ;該放大器81係與减測元件9為 電性連接，用⑽❹桃翁输k信號加峨大 ΐ與放大！181為電性連接，肋對放大蘭所輸出之信號滤除不 而要之雜訊，再對信號作適當的類比轉數位（A/D)取樣頻率來取 樣；該信號處理器83係與濾波器82為電性連接，該信號處理器⑽ 主^係以數位信號處理（Digital Singnal processo;r，DSP)a 架 構模式作為其主要硬體架構，而該信號處理器83包含有濾波單元 831及頻率計算單元832，該濾波單元831包含有數位濾波^元8311 (Digital Band-Pass Filter ’ DBPF)及振幅檢知單元8312 一(Amplitude Detector);該數位濾波單元8311係接收振幅檢知單 元8312的運算結果來調整其内部參數，可將濾波器犯所傳來信號 之雜dl濾、除，頻率计异單元832係包含有快速傅立葉演算單元8321 (Fast Fourier Transformation，FFT)及自相關演算單元8322 (Auto-Correlation);該快速傅立葉演算單元8321係&由數位遽 1282845 ^單兀8311所傳送之信餅運算；該自@ 數位濾波單元8311所傳送之信號，以某_仏二:^8322係將由 j ’若以平移的時間量作為變數，則;;， ΐϊϊ ΐίίπ可將經處理過後之信號輸出； 8為^1 係固設於渦流產生器7之平板71上並與電子裝置 取传一信號，並細_送給電子物之放^^力擾動而 該圓管體10係於適當處設有穿孔1〇1，可供=决哭 Γί體ι^?ί?Π、ίί有流體流動之管路連接，可使流經Ϊ 形賴放之齡如是藉由上述 之運明確瞭解黯流量計6 態示3參f、ί、ΐϊ = t為渦流流量計6於管體10内之使用狀 1〇之^^2/二了3十6固设於圓官體1〇’且流體流經該圓管體 時軸貞獅滅溢放過程 產峰: ί管體10内有流體流動時，流體藉由渦流產生器7 二感測元件9即可感測到流體於渦流溢放過程中產生 "广-堅一k化’感測元件9隨即輸出一原始類比信號（如第六 iil)所示），該原始類比信號經由電子裝置8之放大器81將信 %且將^放大之信號經濾波器82作濾波處理後（如第六圖 43¾ ’並將濾波後之信號作適當的類比轉數位（A/D)取樣 濱率之取樣，再將經轉換後之信號傳送給信號處理器83，· 為於健處理1183接㈣·1182所如之信號時’ m虎處理n 83之振幅檢知單元8312針對遽波器82所傳送之 15就的振幅作計算，而預測取得可能的主要信號頻率； 步驟三：振幅檢知單元8312將所預測取得之主要信號頻率傳 8 1282845 元83U，並同時藉由該主要信 乍慮波處理而去除不必要之雜訊；（如第六圖 Uu ""8s1 半聰&傅立葉次异單儿8321來求得實際流體頻率； 時，理器83經運算得出流體渦流溢放之頻率 顯示於外部之顯示裝置上（例如_; 流體曰之壓得知，献流量計6因鋪之雛紐而產生 原始‘ 流量計6之制元件9測得並輸出- 經άί理==雜訊比/snr)為1/12的渦流溢放信號， 提昇ΐ 2 4 °°0 ¥數位滤波單疋8311處理後’即將信號雜訊比 縱至^速因隨時間改變時，渦流流量計6仍可追 鴨檢知單元所仏山七圖所不’该圖之麥考頻率係表示由振 處理^3所號頻率，實際輸出頻率係表示由信號 播十Ϊ清參閱第八圖所示，係為渦流流量計6另一實施例之整體牟 ^麟妓計6純好黯赶㈤、電=置8 i 81疋请士圓官體1G ;主要不同在於，該電子裝置8包含有放大^ ϋίιΐ82其，比轉數位轉換器84、數位轉類比轉換器85及； 雷极ΐί比轉數位轉換器84係同時與滤波器82、信號處理器η為 该數位轉類比轉換器85係與信號處理器11為電性連接，用以 9 1282845 比信號，並將該類比 將信號處理器11所輸出之數位信號轉換為類 信號傳送至外部； ^ 、 該信號處理器m系以數位信號處理（Digitai Si_〗 Processor，DSP)架構模式作為其主要硬體架構，而該信號處理 器11係包含有f計算單元12、計時及計數單元12及濾波單元 14,该頻料异單元12係包含有快速傅立葉鮮單元121 (以对 Fourier Transformation，FFT)及相位鎖定迴路演算單元122 (Software Phase Locked Loop，SPLL);該快速傅立葉演算單亓 係將類比轉數位轉換器84所輸出之數健號，執行頻譜分 算、頻譜平滑處理、初始頻率篩選及初始頻率濾波運算後，而求 才于一主要參考頻率，並將該主要參考頻率輸出至相位鎖定迴路演 ，，元122 ;該相位鎖定迴路演算單元122於接收到快速傅立葉^ 异單元121所輸出之主要參考頻率後，則利用該主要參考頻率作為 參數调整之依據，即相位鎖定迴路單元122利用該主要參考頻率來 調整其數位電壓控制震盪器的中心頻率、相位比較器及數位電壓 控制震盡為的放大倍率等，並同時比對、追縱由感測元件9所輸入 之原始信號，可使相位鎖定迴路演算單元122在輸入信號有雜訊的 情況下，由主要參考頻率追縱到主要信號頻率，並輸出與主要信 號相同頻率或相位的數位方波(二進位型式0/1)至數位轉類比轉 換器85、計時及計數單元13 ; 該計時及計數單元13於接收到相位鎖定迴路單元122所輸出 之數位方波後，計時及計數單元13即以所預設之單位時間内計算 脈波數’以求得主要信號頻率，並輸出至濾波單元14 ; ^ 該濾波單元14於接收到計時及計數單元13所輸出之信號後， 即作濾波處理，並將經濾波處理之信號輸出至外部顯示裝置。 以下所述係發明人為了使審查委員能明確暸解渦流流量計6 另一貫施例之運作，而對渦流流量計6之運作過程加以詳細說明； 該渦流流量計6之之運作敘述如下： 步驟一：當管體10内有流體流動時，流體藉由渦流產生器7產 1282845 生^渴流’感測元件9即可感測到流體於渦流溢放過程中產生之流 體壓力變化’ _元件9隨即輸出—原始類比信號，該原始類比信 Ϊΐ由電子裝置8之放大器81將信號放大，謂已放大之信號經濾 ，器82作舰處猶，並將濾麟之信麟適當醜比轉數位 (A/D)取樣.頻率，最後將處理後之信號傳送給信號處理器^，· 一士步驟二··於信號處理器11接收到濾波器82所傳送之信號後， 同日守輸入至快速傅立葉演算單元121及相位鎖定迴路演算單元 1四二該S速傅立葉演算單元121將所接收刺信親算處理後， 取得該信號之頻譜圖，並將此頻翻健波處理，而進—步取得 考醉，該初始參考鮮再經由快速傅立葉演算單元121為 ίϊίϊΐ ’得到—主要參考頻率，快速傅立葉演算單元121即將 2主要率傳送給相位鎖定迴路演算單元122，以作為相位鎖 疋迴路肩异單元122之參考頻率，·該相位鎖定迴路演算單元122於 接收^波觀所傳送之信號後，同時與快速傅立葉演算單元⑵ 戶斤傳送之主要參考頻率作比對、追縱，並由相位鎖定迴路演瞀 元1，出-與主要信號_辭或相位之數位方波(三進^型式 =罢使渴，量計6之使用者即可_該數位方波輸人至外部控 制裝置，^作為流量自動控制之控制信號及觸發信號； 步驟三··於相位鎖定迴路演算單元122輸出數位方波之同時， Ζ ίΪΐ☆至計時及計數單元13，以計算在預設時間内的脈 信號輸，計時職單元13並將主要 μ J驟Γ:滤波單元14於接收到由計時及計數單元13所輸出之 守，即將該信號作滤波處理，並將已作濾、波處理之信號輸出 至外部顯示裝置（例如LCD)，以顯示其結果。 ΐί ^為了使審查委員能明確瞭解前述信號處S器η固設於 生之絲，特將獅流量計6之肺咖 =5刪，並分在最侧試流速3.5m/s (體積流相.咖3 16.8m/S (體積流率118.8raVhr)、最高測試流速72m 1282845 位之方波信號。4頻率’並能輸出與原始信號相同頻率或相 所述其流流量計之智慧型信號處理11具有下列 據;於渦JJf 計算頻率之依 立葉演算單元之模式時，以平単兀搭配快速傅 立葉唬J J J J ^寅J單元搭配快速傅 :1求11之渦^ 立葉演▲單為遽ff 關演算單元搭配快速傅 ⑽遲―頻率二^=只口 在設定的Sil;圍t 電路組成’其僅能 計 冗 i£t;=以 相位鎖定^路巾的參數，‘中用此該參考頻率來調整 堡器的放大倍率等，使得相位鎖S路 1282845 變化較大的情況下仍能工作正常。 傅立處搭配快速 ，幅變化較大的情況下仍能二乍尸頻率及 成之=可 申請前未見公開，已符合專利法之規=ί=專The signal transmitted by the sensing component 3 is filtered and the signal is calculated, that is, the therapeutic speed and the instantaneous volumetric flow rate of the fluid are known; the circular tube body 4 is provided with a perforation 41 at a suitable place, and the flow generator 2 is available. Fixed, and the circular tube body 4 can be connected with a pipeline having a fluid flow, so that the fluid flowing through the circular tube body 4 can be formed into an eddy current by the eddy current generator 2, and the conventional vortex flowmeter 1 is When detecting the eddy current overflow frequency, the eddy current overflow signal measured by the sensing component & is usually contaminated by noise, and the signal outputted by the sensing component 3 is transmitted to the external electronic device, although the filter circuit is used. First, the filter is used to calculate the frequency of the thirst overflow, but the sensing component 3 measures the N, NING, and 溢 B. In the case of low noise ratio, the electronic device The fishing wave effect is not JJtL ^. When the electronic device is used to calculate the eddy current overflow frequency, there will be a mis-production of 1. The system will be unstable when the flow rate is automatically controlled. Τ [Summary of the Invention] In view of the fact that the 'Day and Moon Persons' system is missing from the conventional eddy current flowmeter, it is the improvement of the creation and improvement of the long-term time. It can be measured with the change of the flow velocity of the fluid. The improvement of the conventional eddy current flowmeter is not ideal. The invention has been published as follows: The present invention is a kind of turbulent flowmeter. # „ The meter system includes the twin II, the electronic device: the flow generator is a flat plate perpendicular to the blunt body, and the generator is fixed, which mainly includes the amplification = crying and the sea! The stream number processing n is in the digital signal processing architecture mode ^' The letter contains the filtering unit and the frequency calculating unit ·, 兮6: 1, the body killing, and the device is on the plate; the tube system can be used for eddy current eddy current generation It can be far-reaching with a pipeline having a fluid flow, and the two-port limit generator, and the circular-tube body flow generator forms an eddy current overflow. σ * The fluid of the body is vortexed, and the object of the present invention is By the law processor, the digital signal processing architecture mode is used as 6 1282845 0. 35% When the time has changed, the eddy current frequency is tracked, and the error of the frequency of the counting and discharging can be reduced. Moreover, the highest flow rate and the lowest flow rate ' π at the flow rate will not affect the measurement due to the excessive gap. Accuracy, while in the case of flow rate, up to 509 mVhr, the accuracy is about 〇·59%, /, the accuracy is about 2~3 times higher than the traditional processing method. The technical shooting section, the scale of the age, the implementation of the sizing and the following figure, and the following description, the 俾 细 了解 了解 了解 了解 了解 了解 了解 了解 了解 了解 了解 了解 了解 了解 了解 i i i i i i i i i i i i i i i i i The three-dimensional decomposition of the flow meter 6 and its overall heterogeneous flipping; the contact material 6 includes a vortex device 7, an electronic device 8, a sensing element 9 and a circular tube body 1 〇, wherein the eddy current generator 7 The flat plate 71 is formed perpendicular to the blunt body 72, and the vortex generator 7 has a τ-shaped cross section. The electronic device 8 is fixed to the eddy current generator 7, and the electronic device 8 includes a magnified state. 8. Filter 82 and signal processor 83; the amplifier 81 is electrically connected to the subtraction element 9, for use ❹桃翁 loses k signal plus 峨 ΐ 放大 放大 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 181 The sampling frequency is used for sampling; the signal processor 83 is electrically connected to the filter 82, and the signal processor (10) is mainly configured with a digital signal processing (Digital Singnal processo; r, DSP) a architectural mode as its main hardware architecture. The signal processor 83 includes a filtering unit 831 and a frequency calculating unit 832. The filtering unit 831 includes a digital band-pass filter (DBPF) and an amplitude detecting unit 8312 (Amplitude Detector); The digital filtering unit 8311 receives the calculation result of the amplitude detecting unit 8312 to adjust the internal parameters thereof, and filters and divides the mixed dl of the signal transmitted by the filter, and the frequency counting unit 832 includes the fast Fourier calculating unit 8321. (Fast Fourier Transformation, FFT) and autocorrelation calculation unit 8322 (Auto-Correlation); the fast Fourier calculus unit 8321 is a letter cake operation transmitted by the digit 遽1282845^单兀8311; The signal transmitted by the digital filtering unit 8311 is a variable of _仏二:^8322, and the time amount of the translation is taken as j; if, ΐϊϊ ΐ ίίπ can output the processed signal; 8 is ^1 It is fixed on the flat plate 71 of the eddy current generator 7 and receives a signal from the electronic device, and is sent to the electronic object to disturb the force. The circular tube body 10 is provided with a perforation 1〇1 at a suitable place. Available = Γ Γ Γ ι ^ ί ^ ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί , ί, ΐϊ = t is the use of the vortex flowmeter 6 in the pipe body 10 ^ ^ 2 / two 3 6 6 fixed in the circle body 1 〇 ' and the fluid flows through the pipe body axis The peak of the lion lion discharge process: ί When there is fluid flow in the pipe body 10, the fluid can be sensed by the eddy current generator 7 and the second sensing element 9 to generate the fluid during the eddy current overflow process. The k-th sense element 9 then outputs an original analog signal (as shown in the sixth iil), which is amplified by the amplifier 81 of the electronic device 8 and magnified After the signal is filtered by the filter 82 (such as the sixth picture 433⁄4 ' and the filtered signal is sampled by an appropriate analog-to-digital (A/D) sampling rate, and then the converted signal is transmitted to the signal processing. The amplitude of the signal detected by the chopper 82 is calculated by the amplitude detecting unit 8312 of the m-processing n 83, and the prediction is possible. Main signal frequency; Step 3: The amplitude detecting unit 8312 transmits the predicted main signal frequency to 8 1282845 yuan 83U, and at the same time removes unnecessary noise by the main signal processing; (such as the sixth figure) Uu ""8s1 semi-consistence & Fourier sub-single 8321 to obtain the actual fluid frequency; when the processor 83 is calculated, the frequency of the fluid eddy current is displayed on the external display device (for example, _; fluid It is known that the flow meter 6 produces the original 'flow meter 6 component 9 measured and outputted - the ά 理 = = noise ratio / snr) is 1 / 12 eddy current overflow due to the shop Signal, boost ΐ 2 4 °°0 ¥ Digital filter unit 8311 after processing' When the signal noise ratio is changed to the time when the speed is changed with time, the eddy current meter 6 can still chase the duck detection unit according to the figure of the mountain. The frequency of the meter is represented by the frequency of the vibration processing ^3. The actual output frequency is indicated by the signal broadcast, as shown in the eighth figure, which is the whole embodiment of the vortex flowmeter 6 牟^麟妓计6 pure good 黯 五 (5), electricity = set 8 i 81 疋士圆官1G; the main difference is that the electronic device 8 includes an amplification ^ ϋ ΐ ΐ ΐ 其 , , , 比 比 比 比 比 比 比 比 比 比 比 比 比 比 ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; 雷 雷 雷82. The signal processor η is electrically connected to the signal processor 11 for the digital to analog converter 85, and is used for converting a digital signal output by the signal processor 11 into a class signal. Transmitted to the outside; ^, the signal processor m is in the digital signal processing (Digitai Si_〗 Processor, DSP) architecture mode as its main hardware architecture, and the signal processor 11 includes f computing unit 12, timing and counting Unit 12 and filtering unit 14, the frequency material The different unit 12 includes a fast Fourier transform unit 121 (for Fourier Transformation, FFT) and a phase locked loop calculation unit 122 (Software Phase Locked Loop, SPLL); the fast Fourier algorithm unit is analog-to-digital converter 84 The number of outputs is calculated by performing spectrum division, spectrum smoothing processing, initial frequency filtering, and initial frequency filtering, and then obtaining a primary reference frequency, and outputting the primary reference frequency to the phase locked loop, element 122 After receiving the main reference frequency output by the fast Fourier transform unit 121, the phase lock loop calculation unit 122 uses the main reference frequency as a basis for parameter adjustment, that is, the phase lock loop unit 122 adjusts by using the main reference frequency. The digital voltage controls the center frequency of the oscillator, the phase comparator and the digital voltage control to achieve the magnification, etc., and simultaneously compares and traces the original signal input by the sensing component 9, so that the phase locked loop calculation unit can be 122, when the input signal has noise, the main reference frequency is traced to the main signal frequency. And outputting a digital square wave (binary pattern 0/1) having the same frequency or phase as the main signal to the digital to analog converter 85, timing and counting unit 13; the timing and counting unit 13 receives the phase locked loop unit 122 After the digital square wave is output, the timing and counting unit 13 calculates the pulse wave number ' in the preset unit time to obtain the main signal frequency, and outputs it to the filtering unit 14; ^ The filtering unit 14 receives the timing After the signal output from the counting unit 13 is filtered, the filtered signal is output to the external display device. The operation of the vortex flowmeter 6 will be described in detail in order to enable the reviewer to clearly understand the operation of the vortex flowmeter 6 in another embodiment. The operation of the vortex flowmeter 6 is as follows: Step 1 When there is fluid flow in the pipe body 10, the fluid can be sensed by the eddy current generator 7 to produce a fluid pressure change generated by the fluid during the eddy current overflow process. Immediately output - the original analog signal, the original analog signal is amplified by the amplifier 81 of the electronic device 8, that is, the amplified signal is filtered, the device 82 is used as a ship, and the letter of Lin Lin is appropriately ugly to digital. (A/D) sampling. Frequency, and finally the processed signal is transmitted to the signal processor ^, · 1 step 2 · After the signal processor 11 receives the signal transmitted by the filter 82, the same day keeps the input to the fast The Fourier calculus unit 121 and the phase locked loop calculation unit 1 42. The S-speed Fourier calculus unit 121 obtains the spectrum map of the signal after the received singularity calculation, and processes the frequency doubling wave, and then proceeds to After obtaining the drunk, the initial reference fresh is obtained by the fast Fourier calculation unit 121 as the main reference frequency, and the fast Fourier calculation unit 121 transmits the 2 main rate to the phase locked loop calculation unit 122 as the phase lock loop. The reference frequency of the unit 122, the phase locked loop calculation unit 122, after receiving the signal transmitted by the wavefront, simultaneously compares, tracks, and phase locks with the main reference frequency transmitted by the fast Fourier calculus unit (2) Loop derivation element 1, out - and the main signal _ word or phase of the digital square wave (three into ^ type = stop thirst, the user of the meter 6 can _ the digital square wave input to the external control device, ^ As the control signal and the trigger signal of the automatic flow control; Step 3: While the phase locked loop calculation unit 122 outputs the digital square wave, Ζ Ϊΐ Ϊΐ 至 to the timing and counting unit 13 to calculate the pulse signal input within the preset time , the timing unit 13 and the main μ J: the filtering unit 14 receives the output from the timing and counting unit 13, that is, the signal is filtered. And output the signal that has been filtered and wave processed to an external display device (such as an LCD) to display the result. ΐί ^ In order to enable the review committee to clearly understand the above signal, the S device η is fixed in the raw silk, special The lion flowmeter 6 lung coffee = 5 deletion, and is divided into the maximum side test flow rate of 3.5m / s (volume flow phase. Coffee 3 16.8m / S (volume flow rate 118.8raVhr), the highest test flow rate of 72m 1282845 square wave Signal. 4 frequency 'and can output the same frequency or phase as the original signal. The intelligent signal processing 11 of the flow meter has the following data; when the eddy JJf calculates the frequency of the ellipsoidal unit, the pattern is matched with Fast Fourier 唬 JJJJ ^ 寅 J unit with fast Fu: 1 seeking 11 vortex ^ Li Ye ▲ single for 遽 ff off calculus unit with fast Fu (10) late - frequency two ^ = only in the set Sil; circumference t circuit composition ' It can only count the redundancy of i; t = phase lock ^ parameters of the road towel, 'use this reference frequency to adjust the magnification of the fortress, etc., so that the phase lock S road 1282845 can still work under large changes normal. Fu Li is equipped with fast, large amplitude changes, and can still be used for the frequency of the second corpse and the number of the corpse = can be disclosed before the application, has met the requirements of the patent law = ί = special
以此限定 内容所作之較魏絲飾， 【圖式簡單說明】 第一圖係習知渴流流量計之分解示意圖 第二圖係渦流流量計之立體外觀示^圖 第三圖係渦流流量計之分解示意圖The content of the Wei Wei ornaments is limited by this content. [Simplified illustration of the drawing] The first figure is an exploded view of the conventional thirst flowmeter. The second figure is the three-dimensional appearance of the vortex flowmeter. The third diagram is a vortex flowmeter. Decomposition diagram
第四圖係電子裝置與感測元件之整體架構方 第五圖係渦流流量計之使用狀態圖 Q 第六圖係定流速之渦流信號示意圖 第七圖 第八圖 係渦〉H量曰計之參考頻率與實際輸出頻率之對照圖 Ιϊίϋί另—實施例之電子I置與感測元件 之整體架構方塊圖 第九圖係不同流速之渦流信號示意圖 【主要元件符號說明】 習用 渴流產生器 鈍型體 1 渦流流量計 2 21 平板 22 13 1282845 221 壓力孔 222 通孔 3 感測元件 31 探棒 4 圓管體 本創作 6 渦流流量計 7 渦流產生器 71 平板 72 鈍型體 8 電子裝置 81 放大器 82 濾、波器 83 信號處理器 831 濾波單元 8311 數位濾波單元 8312 振幅檢知單元 832 頻率計算單元 8321 快速傅立葉演算單元 8322 自相關演算單元 84 類比轉數位轉換器 85 數位轉類比轉換器 9 感測元件 10 圓管體 101 穿孔 11 信號處理器 12 頻率計算單元 121 快速傅立葉演算單元 122 相位鎖定迴路單元 13 計時及計數單元 14 濾波單元 14The fourth figure is the overall structure of the electronic device and the sensing element. The fifth picture shows the state of use of the eddy current flow meter. Q. The sixth figure shows the eddy current signal of the fixed flow rate. The seventh figure is the vortex>H quantity 曰Comparison of Reference Frequency and Actual Output Frequency 另 ϋ ϋ 另 另 电子 电子 电子 电子 电子 电子 电子 电子 电子 电子 电子 电子 电子 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九 第九Body 1 Vortex flowmeter 2 21 Plate 22 13 1282845 221 Pressure hole 222 Through hole 3 Sensing element 31 Probe 4 Round tube body creation 6 Vortex flow meter 7 Vortex generator 71 Plate 72 Blunt body 8 Electronics 81 Amplifier 82 Filter, waver 83 Signal processor 831 Filtering unit 8311 Digital filtering unit 8312 Amplitude detecting unit 832 Frequency calculating unit 8321 Fast Fourier calcifying unit 8322 Autocorrelation calculating unit 84 Analog-to-digital converter 85 Digital to analog converter 9 Sensing element 10 round tube body 101 perforation 11 signal processor 12 frequency calculation unit 121 fast Fourier calculus Phase locked loop unit 122 and the timer unit 13 the counting unit 14 filtering unit 14