TW200538720A - Apparatus and method for on-line measuring the weight uniformity of a continous web with a specific wavelength - Google Patents
Apparatus and method for on-line measuring the weight uniformity of a continous web with a specific wavelength Download PDFInfo
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200538720 玖、發明說明 【發明所屬之技術領域】 本發明是有關於一種重量均勻度量測裝置及方法,且 特別是有關於在生產連續帶狀物(例如:纖維製品(棉網、 不織布、造紙、塗佈布(針織物、梭織物、不織布))、薄 膜、塑膠、玻纖蓆、玻纖預浸材、皮革布、、塗佈膜、塗 佈材料)時,以使用特定波長光源的光電方式線上量測其 重量均勻度的裝置及方法。 【先前技術】 現今的連續帶狀物(例如:纖維製品(棉網、不織布、 造紙、塗佈布(針織物、梭織物、不織布))、薄膜、塑膠、 玻纖薦、玻纖預浸材、皮革布、塗佈膜、塗佈材料等^') 的生產技#已臻至相當之純熟,所以其生產時的線上品質 i控就顯得極為重要。 、 傳統的檢測技術主要有幾種方式: 一、利用人工磅秤直接量測連續帶狀物之重 之重量均勻200538720 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to a device and method for measuring uniform weight, and more particularly to the production of continuous ribbons (for example: fiber products (cotton nets, non-woven fabrics, papermaking) , Coated cloth (knitted fabric, woven fabric, non-woven fabric)), film, plastic, glass fiber mat, glass fiber prepreg, leather cloth, coating film, coating material) Device and method for measuring weight uniformity on mode line. [Previous technology] Today's continuous ribbons (for example: fiber products (cotton nets, nonwovens, papermaking, coated fabrics (knitted fabrics, woven fabrics, nonwoven fabrics)), films, plastics, fiberglass, glass fiber prepregs , Leather cloth, coating film, coating material, etc.'s production technology # has reached a considerable degree of sophistication, so its online quality control during production is extremely important. There are several main methods of traditional detection technology: First, the weight of continuous belts is measured directly with an artificial scale and the weight is uniform
然而,現在工業咮姦諶杰从、方,a、、. 質出現的變異數分析誤差。However, the analysis error of the qualitative variation number that now appears in the industry.
之厚 3度之方法。但 帶狀物,因此容 200538720 易破壞或改變連績帶狀物原有的物理性質,此現象於輕量 之連續帶狀物(100g/m2以下)量測尤為明顯。 三、放射線法,利用放射線式的偵測器置於連續帶狀 物上方,以量測連續帶狀物之物理性質。這種放射線式的 量測方法很容易在量測時同時破壞連續帶狀物之物理性 質,且放射線的輻射對人體有害。再者,基於人體健康及 成本考量,故此方法一般在使用時均以單點取樣作為量測 連續帶狀物重量均勻度的依據。 習知技術如中華民國專利公告編號557357所示之 以光電方式量測連續帶狀物重量均勻度之溫度補償裝 置」’針對上述提出一種發射元件與接收元件之組合,將 連績帶狀物置於該組合之間,利用光源訊號的穿透率量測 «亥連績帶狀物之重量均勻度。 然而,不同材質的連續帶狀物具有各自不同的特徵光 譜,在不同的光譜波段具有各自不同的吸收或反射光譜特 性。若使用同一光源訊號來量測各種不同材質的連續帶狀 物,則可能會因該光源訊號之穿透率很低而降低量測的靈 敏度,甚至發生完全無法穿透的情形。也就是說,同一光 源汛唬在貫際上並無法適用於量測各種不同材質的連續 帶狀物。 此外,當連續帶狀物具有各種不同的花色或圖樣時, 此時若使用普通的光源訊號來進行重量均勻度量測,則容 ^因為不同花色或圖樣的吸收光譜特性不同,而造成連續 帶狀物之重量均勻度的誤判,使得品管人員無法正確且有 200538720 效地監控連續帶狀物 之線上生產 品質 〇 【發明内容】 不毛明之目的是提供一種重 定波長之發射元件 重里句勻度置測裝置,以特 讀度,增加對於不同材料^的組合,提高線上量測的準 進而降低生產成:可量測性’減少量測誤差,並 重量均勻度量測方 ’以該特定波長的光 壞的方式,提升線上 本發明之另一目的是提供一種 法,根據材料選擇其適用的特定波長 源訊號穿透且不對連續帶狀物造成破 1測連續帶狀物之生產效率與品質。 根據本發明之上述目的,提出—種重量均句度量測裝 置及方法。以特定波長之量測光源訊號照射連續帶狀物, 並接收穿透該連續帶狀物之該量測光源訊號,藉由該連續 帶狀物之透光率與單位面積重量之函數關係,量測該連續 帶狀物之重量均勻度。 該重量均勻度量測裝置至少包含一第一特定波長發 射元件、一第一特定波長接收元件、一訊號處理器以及一 電腦。第一特定波長發射元件發射特定波長之量測光源訊 號至連續帶狀物,而第一特定波長接收元件接收穿透連續 帶狀物後的量測光源訊號,並輸出一量測電氣訊號。電腦 根據量測電氣訊號,計算連續帶狀物之重量均勻度。 訊號處理器具有一溫度補償裝置,此溫度補償裝置包 含一第二特定波長發射元件、一第二特定波長接收元件以 200538720 及迴授比杈器。第二特定波長發射元件之特性與第一特 定波長發身i iM牛才目@,且發射特冑》皮&之一 $考光源訊 號。第二特定波長接收元件之特性與第—特定波長接收元 件相同,且接收該參考光源訊號,並產生一參考電氣訊 號。迴授比較器根據該參考電氣訊號,分別補償第一特定 波長發射疋件以及第一特定波長接收元件之驅動電流。 依“、、本發明一車父佳實施例,發射元件可視不同材質的 連續帶狀物選擇使用適用於紫外光、可見光、或近、中、 遠紅外光的發光二極體或雷射二極體,而接收元件則為與 發射元件相對應之偵測器或感應器。上述之特定波長之範 圍係介於10至4800 nm之間。 訊號處理器更包含一接收端電路、一訊號放大及積分 電路、一發射端電路、一振盪器、一訊號觸發時序、一訊 號前處理器以及一類比/數位轉換電路。訊號放大及積分 電路觸發訊號觸發時序,使振盪器產生一同步頻率訊號傳 送至溫度補償裝置’並藉由該發射端電路使第一特定波長 發射元件產生量測光源訊號。量測光源訊號穿透連續帶狀 物之後’會被第一特定波長接收元件所接收,並產生一量 測電氣訊號。 接收端電路接收量測電氣訊號。接著,此量測電氣訊 Ϊ虎被δίΐ號刖處理為處理後,利用訊號放大及積分電路對豆 電壓及時間做積分,再藉由類比/數位轉換電路將已積分 之量測電氣訊號轉換為一數位訊號。此數位訊號會被傳送 至該電腦’供計算連續帶狀物之重量均勻度。此外,發射 200538720 且接收端 以利用迴 端電路之驅動電流流過第二特定波長發射元件, 電路之驅動電流流過第二特定波長接收元件,藉 授比較器校正環境溫度差。 測方月之另一較佳實施例’上述之重量均句度量 、商用U3以一光譜測試步驟’用卩決定連續帶狀物所 ^ 、疋波長。先對連續帶狀物進行光譜測試,求出其 特徵光譜,再根據其吸收光譜特性選擇出適用於該連續帶 狀物進行重量均句度量測的特定波長,並依此調整或更換 使用適用於該特定波長的發射元件及接收元件。 、 【實施方式】 第1圖係繪示本發明之一較佳實施例之示意圖。重量 2勻度里測裝置100包含一第一特定波長發射元件、 -第,特定波長接收元件104、一訊號處理器106以及一 電細1〇8。重$均勻度量測襞置100之配置如第1圖所 丁 a連續帶狀物1 ίο,例如棉網、不織布、造紙、薄膜、 塑膠、坡纖蓆、玻纖預浸材、皮革布、塗佈布、塗佈膜、 塗佈材料等等’置於第—特定波長發射元件1们與第一特 定波長接^件HM之間,但未與兩者相接觸。如此,以 未破衷連續贡狀物11〇之手段來量測該連續帶狀物"Ο 之重量均勻度。 第2圖係繪示本方法詳敘如下: 當特定波長發射器202發射一束光線穿過一介質 10 200538720 時’可藉由光子吸收得到透光介質之物理性質,在材料密 度D ’以透過介質後光之強度It與特定波長投射光之強度 I。4於每單位面積所能穿輸能量速率,光線通過厚度為h 的吸收,重量均勻度(w)與透光率之關係: iL 一厂aDh3 degrees thick. But the ribbon, therefore the capacity 200538720 is easy to damage or change the original physical properties of the continuous ribbon. This phenomenon is especially obvious in the measurement of lightweight continuous ribbons (less than 100g / m2). 3. Radiation method, using a radiation detector placed on top of a continuous strip to measure the physical properties of the continuous strip. This radiation-based measurement method easily destroys the physical properties of the continuous ribbon at the same time, and the radiation radiation is harmful to the human body. Furthermore, based on human health and cost considerations, this method generally uses single-point sampling as the basis for measuring the weight uniformity of continuous ribbons when in use. The conventional technology is a temperature compensation device for measuring the uniformity of the weight of a continuous ribbon photoelectrically as shown in the Republic of China Patent Bulletin No. 557357. Between the combinations, the weight uniformity of the ribbon was measured using the transmittance of the light source signal. However, continuous ribbons of different materials have their own different characteristic spectra, and have different absorption or reflection spectral characteristics in different spectral bands. If the same light source signal is used to measure continuous strips of different materials, the sensitivity of the measurement may be reduced due to the low transmittance of the light source signal, and even the situation of impenetrability may occur. In other words, the same light source is not suitable for measuring continuous ribbons of different materials. In addition, when the continuous belt has various colors or patterns, if the weight is measured uniformly using an ordinary light source signal at this time, the continuous band may be caused by different absorption spectrum characteristics of different colors or patterns. The misjudgment of the uniformity of the weight of the object makes the quality control staff unable to accurately and effectively monitor the production quality of the continuous ribbon on the line. [Abstract] The purpose of the non-brightness is to provide a wavelength-resetting emission element. The measuring device uses special reading to increase the combination of different materials ^, improve the accuracy of online measurement and thus reduce the production: Measurability 'reduces the measurement error, and weight uniformly measures the measurement method' at this specific wavelength The method of photo-deterioration and improving the line. Another object of the present invention is to provide a method for selecting a specific wavelength source signal to be transmitted according to the material without causing the continuous belt to break and measure the production efficiency and quality of the continuous belt. According to the above object of the present invention, a weight average sentence measurement device and method are proposed. The continuous band is irradiated with a measurement light source signal of a specific wavelength, and the signal of the measurement light source that penetrates the continuous web is received, and the quantity of light through the continuous belt is a function of the weight per unit area. The weight uniformity of the continuous ribbon was measured. The weight uniformity measuring device includes at least a first specific wavelength transmitting element, a first specific wavelength receiving element, a signal processor, and a computer. The first specific wavelength transmitting element transmits a measurement light source signal of a specific wavelength to the continuous ribbon, and the first specific wavelength receiving element receives the measurement light source signal after passing through the continuous ribbon, and outputs a measurement electrical signal. The computer calculates the weight uniformity of the continuous ribbon based on the measured electrical signal. The signal processor has a temperature compensation device. The temperature compensation device includes a second specific wavelength transmitting element, a second specific wavelength receiving element, 200538720, and a feedback ratio switch. The characteristics of the second specific wavelength emitting element are the same as those of the first specific wavelength, and the emission characteristic is “iM”, and the emission characteristic is one of the “skins” & test signals. The second specific wavelength receiving element has the same characteristics as the first specific wavelength receiving element, and receives the reference light source signal and generates a reference electrical signal. The feedback comparator compensates the driving current of the first specific wavelength transmitting element and the first specific wavelength receiving element according to the reference electrical signal, respectively. According to a preferred embodiment of the present invention, the emitting element can be selected to use light emitting diodes or laser diodes suitable for ultraviolet light, visible light, or near, middle, and far infrared light depending on the continuous ribbon of different materials. The receiving element is a detector or sensor corresponding to the transmitting element. The above-mentioned specific wavelength range is between 10 and 4800 nm. The signal processor further includes a receiving circuit, a signal amplifier and Integrating circuit, a transmitting circuit, an oscillator, a signal trigger timing, a signal preprocessor, and an analog / digital conversion circuit. The signal amplification and integration circuit triggers the signal trigger timing, so that the oscillator generates a synchronous frequency signal and sends it to The temperature compensation device 'uses the transmitting end circuit to make the first specific wavelength transmitting element generate a measuring light source signal. After the measuring light source signal penetrates the continuous ribbon, it will be received by the first specific wavelength receiving element and generate a The electrical signal is measured. The receiving circuit receives the electrical signal. Then, the electrical signal is processed by the δίΐ signal and processed. The signal amplification and integration circuit integrates the bean voltage and time, and then converts the integrated measurement electrical signal into a digital signal by an analog / digital conversion circuit. This digital signal will be sent to the computer for calculation of continuous bands. The weight uniformity of the object. In addition, the 200538720 is transmitted and the receiving end uses the driving current of the return circuit to flow through the second specific wavelength transmitting element, and the driving current of the circuit flows through the second specific wavelength receiving element, and the comparator is used to correct the ambient temperature. Another preferred embodiment of measuring Fangyue is the above-mentioned weight average sentence measurement, commercial U3 uses a spectral test step. Use 卩 to determine the wavelength of the continuous band ^ and 疋. First perform a spectral test on the continuous band. , Find its characteristic spectrum, and then select a specific wavelength suitable for the weight average sentence measurement of the continuous ribbon according to its absorption spectrum characteristics, and adjust or replace the transmitting element and receiver suitable for the specific wavelength accordingly. Element. [Embodiment] FIG. 1 is a schematic diagram showing a preferred embodiment of the present invention. The weight 2 uniformity measuring device 100 includes The first specific wavelength transmitting element, the first specific wavelength receiving element 104, a signal processor 106, and an electronic device 108. The configuration of the uniform measurement unit 100 is as shown in FIG.物 1, such as cotton mesh, non-woven fabric, papermaking, film, plastic, slope fiber mat, glass fiber prepreg, leather cloth, coated cloth, coated film, coated material, etc. The elements 1 are in contact with the first specific wavelength connection element HM, but are not in contact with the two. In this way, the weight of the continuous ribbon " 〇 is measured by a means of not breaking the continuous tributary 11. The uniformity is shown in Figure 2. The method is described in detail as follows: When a specific wavelength transmitter 202 emits a beam of light through a medium 10 200538720, the physical properties of the light-transmitting medium can be obtained by photon absorption, at the material density D 'The intensity It of the light after transmitting the medium and the intensity I of the light projected at a specific wavelength. 4The relationship between the energy transmission rate per unit area, the absorption of light through the thickness h, the relationship between the weight uniformity (w) and the light transmittance: iL 一 plant aDh
T 丄ο (1 _ 1) 其中1。=特定波長投射光之強度 工严透過介質後光之強度 α =介質光吸收係數 h =介質厚度 D=材料密度 K=D aT 丄 ο (1 _ 1) where 1. = Intensity of the light projected at a specific wavelength. Intensity of light after passing through the medium strictly. Α = Coefficient of light absorption of the medium h = Thickness of the medium D = Material density K = D a
(1-2) (1-3) (1-4) (1-5)(1-2) (1-3) (1-4) (1-5)
Kh=W W=ln(It/I0) 右此介質為-連續帶狀物2〇1時,則其重量均句度可 利用(1_1)式至(1-5)式數學推導,藉由透光㈣連續帶 狀物201物理性質之關係得到一訊號,再藉由訊號處理器 106(第1圖)透過數值分析計算出重量均句声。 第3=繪示本發明之一較佳實施例之方 圖-先’對連績帶狀物進行光譜測試,求 200538720Kh = WW = ln (It / I0) Right when the medium is -continuous ribbon 2001, its weight average sentence degree can be deduced by using the equations (1_1) to (1-5), through light transmission讯 A signal is obtained from the relationship between the physical properties of the continuous ribbon 201, and the signal processor 106 (Fig. 1) is used to calculate the average sound of the weight by numerical analysis. Number 3 = A schematic diagram of a preferred embodiment of the present invention is shown. First, perform a spectral test on a continuous band, and find 200538720.
用於該連續 304) 〇 波長,並依此調整或更 元件及接收元件(步驟 ’測試此選定的特定For the continuous 304) 〇 wavelength and adjust or more elements and receiving elements accordingly (step ’test this selected specific
(步驟308)。 再者,可選擇i也進行一測試步驟,測試此 波長是否符合量測之重量均勻度的標準(步驟 第4圖係繪示本發明之一較佳實施例之裝置流程 圖。如第4圖所示,訊號放大及積分電路450觸發訊號觸 I時序430,使振盪器420產生一同步頻率訊號傳送至溫 度補償裝置410,並使第一特定波長發射元件1〇2產生量 測光源訊號。量測光源訊號穿透連續帶狀物丨1〇之後,會 被第一特定波長接收元件104所接收,並產生一量測電氣 訊號。 接收端電路404負責接收此量測電氣訊號。接著,此 量測電氣訊號被訊號前處理器440處理後,利用訊號放大 及積分電路450.對其電壓及時間做積分,再藉由類比/數 位轉換電路460將已積分之量測電氣訊號轉換為一數位 訊號。此數位訊號會被傳送至電腦1 〇8,供計算連續帶狀 物110之重量均勻度。 12 200538720 溫度補償裝置4 1 〇包含一第二特定波長發射元件 4 1 2、第二特定波長接收元件4 14、以及一迴授比較器 4 1 6。第一特定波長發射元件1 〇2與該第二特定波長發射 元件412相同,而第一特定波長接收元件1〇4與第二特定 波長接收元件4 14亦相同。第二特定波長發射元件412 與第二特定波長接收元件414之組合,其特性與第一特定 波長發射元件1 02與第一特定波長接收元件1 〇4之組合相 同,因此可作為迴授比較器416的參考模組,來正確地調 整第一特定波長發射元件102以及第一特定波長接收元 件104之驅動電流。 因此,當發射端電路402之驅動電流會流過第二特定 波長發射元件4 12,且接收端電路4〇4之驅動電流亦流過 第二特定波長接收元件414時,.第二特定波長發射元件 4 12會發射特定波長之一參考光源訊號供第二特定波長 接收元件4 14接收’以產生一參考電氣訊號。迴授比較器 4 1 6即根據該參考電氣訊號,分別調整第一特定波長發射 元件1 02以及第一特定波長接收元件1 之驅動電流,補 償環境溫度差。 進一步來說,通過第一特定波長發射元件1〇2的驅動 電流也導通溫度補償裝置41 〇之第二特定波長發射元件 412,並經過積分放大得到輸出電壓。若輸出電壓大於參 考電壓,則輸出電壓會下降。反之,若輸出電壓比參考電 壓小,則輸出電壓會上升。 而另一方面,驅動電流受到溫度補償裝置4丨〇之平均 13 200538720 電壓影響’若平均電壓升高,則驅動電流會變大,反之, 若平均電壓變小,則驅動電流會變小。舉例來說,當第一 特定波長發射元件102發出量測光源訊號至第一特定波 長接收元件104時,此時若因外界溫度影響而使得平均電 壓變大,則溫度補償裝置41〇内之輸出電壓會上升,因此 造成平均電壓隨之下降,進而降低原本的驅動電流。這種 負迴授方式,則可形成抑制溫度變化,因此可得到穩定的 輸出電壓。 本^明可利用可見光、紫外光、近紅外線、中紅外線、 遠紅外線發光二極體或雷射二極體作&發射元件,而接收 疋件則為與發射元件相對應之偵測器或感應器,不僅可提 升透光率及準確性,更可涵蓋較廣之光波範圍。依照本發 明,貫施例’發射元件與接收元件之組合所能夠量測的光 譜範圍可介於10〜4800 nm之間。 上述之較佳實施例中使用適心特定波長之發射元 二=:、溫度補償裝置,以靈敏度佳的光電感測震 光::二▼狀物重量均勻度。再者,根據連續帶狀物之 適的特定波長,因此可避免破壞連續帶 :::提升生產效率與品質、減少人為誤差、並可降:人 -U 〜衣罝陈f早點(單一组發鼾3 /、接收it件之組合)量測之外,亦能以多點(多 件器與接收元件)冑列於待測的連續帶狀物上方㈣ 200538720 圖所不)’如此可同時量測連續帶狀物之縱向 維重量均勻度。 、也、π的兩 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,任何熟習此技藝者,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= 護範圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 為讓本發明之上述和其他目的、特徵、和優點能更明 顯易懂,下文特舉一較佳實施例,並配合所附圖式,作詳 細說明如下: 第1圖係繪示本發明之一較佳實施例之示意圖; 第2圖係繪示本發明之一較佳實施例的方法示意圖; 第3圖係繪示本發明之一較佳實施例之方法流程 圖;以及 第4圖係繪示本發明之一較佳實施例之裝置流程圖。 【元件代表符號簡單說明】 10 0 ··重量均勻度篁測裝置 102:第一特定波長發射元件 1 0 4 :第一特定波長接收元件 106 :訊號處理器 1〇8 :電腦 11 0 :連續帶狀物 200538720 201 ··連續帶狀物 202 :特定波長發射器 203 :特定波長接收器 302、304、306 ' 308 :步驟 402 :發射端電路 404 :接收端電路 410 :溫度補償裝置 412 ··第二特定波長發射元件 414 :第二特定波長接收元件 416 :迴授比較器 420 :振盪器 430 :訊號觸發時序 440 ··訊號前處理器 450 :訊號放大及積分電路 460 :類比/數位轉換電路(Step 308). Furthermore, you can also choose i to perform a test step to test whether this wavelength meets the weight uniformity measurement standard. (Step 4 is a flowchart of a device according to a preferred embodiment of the present invention. As shown in FIG. 4 As shown, the signal amplification and integration circuit 450 triggers the signal to touch the timing I 430, so that the oscillator 420 generates a synchronous frequency signal and transmits it to the temperature compensation device 410, and the first specific wavelength transmitting element 102 generates a measurement light source signal. After the light source signal penetrates the continuous ribbon 10, it will be received by the first specific wavelength receiving element 104, and a measurement electrical signal will be generated. The receiving end circuit 404 is responsible for receiving this measurement electrical signal. Then, this amount After the measurement electrical signal is processed by the signal pre-processor 440, the signal amplification and integration circuit 450 is used. The voltage and time are integrated, and the integrated measurement electrical signal is converted into a digital signal by the analog / digital conversion circuit 460. This digital signal will be transmitted to the computer 1 08 for calculating the weight uniformity of the continuous ribbon 110. 12 200538720 Temperature compensation device 4 1 〇 contains a second specific wavelength The transmitting element 4 1 2, the second specific wavelength receiving element 4 14 and a feedback comparator 4 1 6. The first specific wavelength transmitting element 1 102 is the same as the second specific wavelength transmitting element 412, and the first specific wavelength The receiving element 104 is the same as the second specific wavelength receiving element 4 14. The combination of the second specific wavelength transmitting element 412 and the second specific wavelength receiving element 414 has the same characteristics as the first specific wavelength transmitting element 102 and the first specific wavelength. The combination of the wavelength receiving elements 104 is the same, so it can be used as a reference module of the feedback comparator 416 to correctly adjust the driving current of the first specific wavelength transmitting element 102 and the first specific wavelength receiving element 104. Therefore, when transmitting When the driving current of the end circuit 402 flows through the second specific wavelength transmitting element 4 12 and the driving current of the receiving end circuit 4 0 also flows through the second specific wavelength receiving element 414, the second specific wavelength transmitting element 4 12 will A reference light source signal of one specific wavelength is emitted for reception by the second specific wavelength receiving element 4 14 to generate a reference electrical signal. The feedback comparator 4 1 6 is based on the reference electrical signal No., the driving current of the first specific wavelength emitting element 102 and the first specific wavelength receiving element 1 are adjusted to compensate for the difference in ambient temperature. Furthermore, the driving current of the first specific wavelength emitting element 102 is also turned on for temperature compensation. The second specific wavelength emitting element 412 of the device 41 〇 is obtained by integration and amplification to obtain the output voltage. If the output voltage is greater than the reference voltage, the output voltage will decrease. Conversely, if the output voltage is smaller than the reference voltage, the output voltage will increase. On the other hand, the driving current is affected by the average 13 200538720 voltage of the temperature compensation device 4 '. If the average voltage increases, the driving current will increase, and conversely, if the average voltage decreases, the driving current will decrease. For example, when the first specific wavelength emitting element 102 sends a measurement light source signal to the first specific wavelength receiving element 104, if the average voltage becomes larger due to the influence of external temperature, the output in the temperature compensation device 41 The voltage will increase, which will cause the average voltage to decrease, which will reduce the original drive current. This negative feedback method can suppress the temperature change, so that a stable output voltage can be obtained. This document can use visible light, ultraviolet light, near-infrared, mid-infrared, far-infrared light-emitting diodes or laser diodes as the & transmitting element, and the receiving file is a detector or corresponding to the transmitting element or The sensor can not only improve the transmittance and accuracy, but also cover a wider range of light waves. According to the present invention, the spectral range that can be measured by the combination of the transmitting element and the receiving element according to the embodiment can be between 10 and 4800 nm. In the above-mentioned preferred embodiment, an emission element with a specific wavelength is used. Two = :, temperature compensation device, vibrometer with high sensitivity to measure the light. :: two ▼ Uniform weight uniformity. Moreover, according to the appropriate specific wavelength of the continuous belt, it is possible to avoid destroying the continuous belt ::: improve production efficiency and quality, reduce human error, and can reduce: person-U ~ 衣 罝 陈 f earlier (single group hair鼾 3 /, combination of receiving it pieces) In addition to measurement, it can also be listed on the continuous belt to be measured at multiple points (multiple pieces and receiving elements). 200538720 (not shown in the figure) so it can be measured at the same time Measure the uniformity of the longitudinal dimension of the continuous ribbon. Although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make various modifications without departing from the spirit and scope of the present invention. Changes and retouching, so the protection scope of the present invention shall be determined by the scope of the attached patent application. [Brief Description of the Drawings] In order to make the above and other objects, features, and advantages of the present invention more comprehensible, a preferred embodiment is given below in conjunction with the accompanying drawings to make a detailed description as follows: FIG. 1 FIG. 2 is a schematic diagram of a preferred embodiment of the present invention; FIG. 2 is a schematic diagram of a method of a preferred embodiment of the present invention; FIG. 3 is a flowchart of a method of a preferred embodiment of the present invention And FIG. 4 is a flowchart of a device according to a preferred embodiment of the present invention. [Simple description of component representative symbols] 10 0 ·· Weight uniformity measuring device 102: First specific wavelength transmitting element 1 0 4: First specific wavelength receiving element 106: Signal processor 108: Computer 11 0: Continuous band 200538720 201 Continuous band 202: Specific wavelength transmitter 203: Specific wavelength receiver 302, 304, 306 '308: Step 402: Transmitting circuit 404: Receiving circuit 410: Temperature compensation device 412 Two specific wavelength transmitting elements 414: second specific wavelength receiving element 416: feedback comparator 420: oscillator 430: signal trigger timing 440 ... signal pre-processor 450: signal amplification and integration circuit 460: analog / digital conversion circuit
1616
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TWI500931B (en) * | 2010-01-18 | 2015-09-21 | Wollsdorf Leder Schmidt & Co Ges M B H | Testing device for determining the quality of leather |
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