TWI759048B - A signal acquiring method and a signal acquiring system - Google Patents

A signal acquiring method and a signal acquiring system Download PDF

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TWI759048B
TWI759048B TW109146958A TW109146958A TWI759048B TW I759048 B TWI759048 B TW I759048B TW 109146958 A TW109146958 A TW 109146958A TW 109146958 A TW109146958 A TW 109146958A TW I759048 B TWI759048 B TW I759048B
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sampling
signal
module
target
feature point
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TW202224620A (en
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林顯豐
王廷瑋
陳文翔
朱效緯
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國立陽明交通大學
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Abstract

A signal acquiring system comprises a sampling module and an assembling module. The sampling module is configured to access a plurality of samplings to acquire a plurality of sampled signals triggered by a feature point in a target signal. The assembling module is coupled to the sampling module and configured to assemble the sampled signals to form a result signal. Wherein the feature point is appeared in the target signal with a first period time. Wherein the sampling time difference between adjacent two of the sampled signals is equaled to the summation of the first period time and a first shifting time. Wherein the first shifting time is less than the first period time.

Description

一種訊號擷取方法及訊號擷取系統Signal acquisition method and signal acquisition system

本發明是關於一種訊號擷取方法及訊號擷取系統，特別是關於一種具有時間位移量測的訊號擷取方法及訊號擷取系統。The present invention relates to a signal acquisition method and a signal acquisition system, in particular to a signal acquisition method and a signal acquisition system with time displacement measurement.

如何有效地進行生物訊號的監控與量測在醫學、照護或運動領域中都是必要的議題。然而要提升訊號擷取的品質勢必需要增加硬體上面的成本或體積，例如增加感測器的數量或增加訊號擷裝置(DAQ)的效能。硬體成本或體積的增加對於一些應用(例如穿戴式裝置)將會產生限制，使其產生不易推廣或是導致穿戴者行動不便等缺點。因此如何在有限的硬體成本以及占用體積下提升訊號擷取的品質將會是本技術領域中一大課題。How to effectively monitor and measure biological signals is a necessary issue in the fields of medicine, nursing or sports. However, to improve the quality of signal acquisition, it is necessary to increase the cost or volume of hardware, such as increasing the number of sensors or increasing the performance of a signal acquisition device (DAQ). The increase in hardware cost or volume will limit some applications (such as wearable devices), making it difficult to popularize or causing inconvenience to the wearer. Therefore, how to improve the quality of signal acquisition with limited hardware cost and occupied volume will be a major subject in the technical field.

本發明提供一種訊號擷取方法，包含：以一取樣模組以一目標訊號中的一特徵點為觸發進行複數取樣而得到複數取樣訊號；以及疊加該些取樣訊號而得到一結果訊號。其中，該特徵點以一第一週期出現於該目標訊號中。其中，該些取樣訊號中相鄰的二者的取樣時間差等於該第一週期與一第一時間位移的和且該第一時間位移小於該第一週期。The present invention provides a signal acquisition method, comprising: using a sampling module to perform complex sampling with a feature point in a target signal as a trigger to obtain a complex sampling signal; and superimposing the sampling signals to obtain a result signal. Wherein, the feature point appears in the target signal with a first period. Wherein, the sampling time difference between two adjacent ones of the sampling signals is equal to the sum of the first period and a first time shift, and the first time shift is smaller than the first period.

本發明提供一種訊號擷取方法，包含：以一取樣模組以一目標訊號中的一特徵點為觸發進行複數取樣而得到複數取樣訊號；以及疊加該些取樣訊號而得到一結果訊號。其中，該特徵點以一第一週期出現於該目標訊號中。其中，該些取樣訊號中相鄰的二者的取樣時間差等於該第一週期與一第一時間位移的和且該第一時間位移小於該第一週期。The present invention provides a signal acquisition method, comprising: using a sampling module to perform complex sampling with a feature point in a target signal as a trigger to obtain a complex sampling signal; and superimposing the sampling signals to obtain a result signal. Wherein, the feature point appears in the target signal with a first period. Wherein, the sampling time difference between two adjacent ones of the sampling signals is equal to the sum of the first period and a first time shift, and the first time shift is smaller than the first period.

本發明提供一種訊號擷取方法，包含：以一取樣模組以一目標訊號中的一特徵點為觸發進行複數取樣而得到複數取樣訊號；以及疊加該些取樣訊號而得到一結果訊號。其中，該特徵點以一第一週期出現於該目標訊號中。其中，該取樣模組包括複數取樣元件，每一該取樣元件以一第一時間位移的延遲依序取樣。該些取樣訊號中相鄰的二者的取樣時間差等於該第一時間位移。The present invention provides a signal acquisition method, comprising: using a sampling module to perform complex sampling with a feature point in a target signal as a trigger to obtain a complex sampling signal; and superimposing the sampling signals to obtain a result signal. Wherein, the feature point appears in the target signal with a first period. Wherein, the sampling module includes a plurality of sampling elements, and each sampling element is sequentially sampled with a delay of a first time shift. The sampling time difference between adjacent two of the sampling signals is equal to the first time shift.

本發明提供一種訊號擷取系統，包含取樣模組以及整合模組。取樣模組用以自一目標訊號中以一特徵點為觸發進行複數取樣而得到複數取樣訊號。整合模組耦接自該取樣模組，該整合模組用以疊加該些取樣訊號以得到一結果訊號。其中，該特徵點以一第一週期出現於該目標訊號中。其中，該些取樣訊號中相鄰的二者的取樣時間差等於該第一週期與一第一時間位移的和且該第一時間位移小於該第一週期。The invention provides a signal acquisition system, which includes a sampling module and an integration module. The sampling module is used for performing complex sampling from a target signal with a characteristic point as a trigger to obtain a complex sampling signal. The integration module is coupled to the sampling module, and the integration module is used for superimposing the sampling signals to obtain a result signal. Wherein, the feature point appears in the target signal with a first period. Wherein, the sampling time difference between two adjacent ones of the sampling signals is equal to the sum of the first period and a first time shift, and the first time shift is smaller than the first period.

本發明提供一種訊號擷取系統，包含取樣模組以及整合模組。取樣模組用以自一目標訊號中以一特徵點為觸發進行複數取樣而得到複數取樣訊號。整合模組耦接自該取樣模組，該整合模組用以疊加該些取樣訊號以得到一結果訊號。其中，該特徵點以一第一週期出現於該目標訊號中。其中，該取樣模組包括複數取樣元件，每一該取樣元件以一第一時間位移的延遲依序取樣；該些取樣訊號中相鄰的二者的取樣時間差等於該第一時間位移。The invention provides a signal acquisition system, which includes a sampling module and an integration module. The sampling module is used for performing complex sampling from a target signal with a characteristic point as a trigger to obtain a complex sampling signal. The integration module is coupled to the sampling module, and the integration module is used for superimposing the sampling signals to obtain a result signal. Wherein, the feature point appears in the target signal with a first period. Wherein, the sampling module includes a plurality of sampling elements, each sampling element samples sequentially with a delay of a first time shift; the sampling time difference of two adjacent ones of the sampling signals is equal to the first time shift.

如上所述，當硬體的效能例如取樣率或是處理速度受到限制時，以目標訊號中的特徵點為觸發，在觸發點後透過時間位移的延遲依序量測。如此單次量測時可以控制在硬體效能可以負荷的情況下對一個週期性的目標訊號進行擷取或取樣。因此可以達到在有限的硬體成本以及占用體積下提升訊號擷取的品質的目的。As mentioned above, when the performance of the hardware such as the sampling rate or the processing speed is limited, the feature points in the target signal are used as triggers, and after the trigger points, the time shift delays are sequentially measured. In such a single measurement, a periodic target signal can be captured or sampled under the condition that the hardware performance can be loaded. Therefore, the purpose of improving the quality of signal acquisition under the limited hardware cost and occupied volume can be achieved.

以下將以圖式及詳細敘述清楚說明本揭示內容之精神，任何所屬技術領域中具有通常知識者在瞭解本揭示內容之實施例後，當可由本揭示內容所教示之技術，加以改變及修飾，其並不脫離本揭示內容之精神與範圍。The following will clearly illustrate the spirit of the present disclosure with drawings and detailed descriptions. Anyone with ordinary knowledge in the technical field, after understanding the embodiments of the present disclosure, can make changes and modifications by the techniques taught in the present disclosure. It does not depart from the spirit and scope of this disclosure.

關於本文中所使用之『第一』、『第二』、…等，並非特別指稱次序或順位的意思，亦非用以限定本發明，其僅為了區別以相同技術用語描述的元件或操作。關於本文中所使用之『包含』、『包括』、『具有』、『含有』等等，均為開放性的用語，即意指包含但不限於。The terms "first", "second", . The terms "comprising", "including", "having", "containing", etc. used in this document are all open-ended terms, meaning including but not limited to.

關於本文中所使用之用詞(terms)，除有特別註明外，通常具有每個用詞使用在此領域中、在此揭露之內容中與特殊內容中的平常意義。某些用以描述本揭露之用詞將於下或在此說明書的別處討論，以提供本領域技術人員在有關本揭露之描述上額外的引導。With regard to the terms used in this document, unless otherwise specified, each term generally has the ordinary meaning of each term used in the field, in the content disclosed herein, and in the specific content. Certain terms used to describe the present disclosure are discussed below or elsewhere in this specification to provide those skilled in the art with additional guidance in describing the present disclosure.

在附圖中，為了清楚起見，放大了層、板、區域或空間等的厚度。在整個說明書中，相同的附圖標記表示相同的元件。應當理解，當諸如層、板、區域或空間的元件被稱為在另一元件「上」或「連接到」另一元件時，其可以被解釋為直接在另一元件上或與另一元件連接，或是可解釋為具有或存在中間元件在元件與另一元件之間。如本文所使用的「連接」或「耦接」可以指物理及/或電性連接。再者，為簡化附圖及凸顯附圖所要呈現之內容，附圖中習知的結構或元件將可能以簡單示意的方式繪出或是以省略的方式呈現。In the drawings, the thickness of layers, panels, regions or spaces, etc., are exaggerated for clarity. The same reference numerals refer to the same elements throughout the specification. It will be understood that when an element such as a layer, panel, region or space is referred to as being "on" or "connected to" another element, it can be construed as being directly on or with the other element Connected, or may be construed as having or existing intervening elements between an element and another element. "Connected" or "coupled" as used herein may refer to physical and/or electrical connections. Furthermore, well-known structures or elements in the drawings may be drawn in a simplified schematic manner or presented in an omitted manner in order to simplify the drawings and to highlight the contents to be presented in the drawings.

請參照圖1A及圖1B，圖1A說明本發明提供一種訊號擷取系統100，包含取樣模組110以及整合模組120。取樣模組110用以自目標訊號T中以特徵點FP為觸發進行複數取樣S1-SN而得到複數取樣訊號AS1-ASN。具體來說，取樣模組110可以直接或間接設置於目標(例如但不限於人體或動物)，設置的方式可以貼附在皮膚表側、植入體內或設置於目標周遭，然而本發明並不限於取樣模組的設置方式或目標種類。目標訊號T例如為心電訊號、肺部呼吸訊號、血管收縮及舒張訊號。須說明的是，取樣模組110可以例如但不限於為影像取樣模組、電阻抗影像，電訊號取樣模組或電阻抗訊號取樣模組。整合模組120耦接自取樣模組110，整合模組120用以疊加取樣訊號AS1-ASN以得到結果訊號RS。具體來說，整合模組可以但不限於是透過硬體進行訊號的疊加或是透過軟體(例如MATLAB、LabVIEW)進行影像的疊加。Please refer to FIG. 1A and FIG. 1B . FIG. 1A illustrates a signal acquisition system 100 provided by the present invention, including a sampling module 110 and an integration module 120 . The sampling module 110 is used for performing complex sampling S1-SN from the target signal T with the feature point FP as a trigger to obtain complex sampling signals AS1-ASN. Specifically, the sampling module 110 can be directly or indirectly disposed on the target (such as but not limited to human body or animal), and the method can be attached to the surface of the skin, implanted in the body, or disposed around the target, but the present invention is not limited to How the sampling module is set up or what kind of target it is. The target signal T is, for example, an ECG signal, a lung breathing signal, and a vasoconstriction and diastolic signal. It should be noted that the sampling module 110 can be, for example, but not limited to, an image sampling module, an electrical impedance image, an electrical signal sampling module or an electrical impedance signal sampling module. The integration module 120 is coupled to the self-sampling module 110, and the integration module 120 is used for superimposing the sampling signals AS1-ASN to obtain the result signal RS. Specifically, the integration module can be, but not limited to, superimpose signals through hardware or superimpose images through software (eg, MATLAB, LabVIEW).

圖1B說明特徵點FP以第一週期T1出現於目標訊號T中。舉例來說，目標訊號T為心電訊號時，可以以心電訊號中的P波的波峰為特徵點FP。然而，上述僅是舉例並非為了限制本發明，特徵點FP可以選自目標訊號T中具有週期性出現的任意訊號。取樣模組110以特徵點FP為觸發進行N次(N為任意正整數)取樣S1-SN。每一次取樣便會對應得到至少一個取樣訊號，舉例來說，取樣S1可以得到取樣訊號AS1。取樣訊號AS1-ASN中相鄰的二者的取樣時間差等於第一週期T1與第一時間位移TS的和且第一時間位移TS小於第一週期T1。舉例來說，取樣訊號AS1與取樣訊號AS1之間的時間差為第一週期T1與第一時間位移TS的和。於此實施例中，取樣模組110透過識別特徵點FP並以特徵點FP為觸發來量測具有第一週期T1的目標訊號T，最後疊加的結果訊號RS可以近似或等效於進行了N次取樣。如果結果訊號RS為影像訊號則幀數為N。於此實施例中，第一時間位移TS等於第一週期T1除以結果訊號RS的幀數的商。FIG. 1B illustrates that the feature point FP appears in the target signal T with a first period T1. For example, when the target signal T is an ECG signal, the peak of the P wave in the ECG signal can be used as the feature point FP. However, the above is only an example and is not intended to limit the present invention, and the feature point FP can be selected from any signal in the target signal T that appears periodically. The sampling module 110 uses the feature point FP as a trigger to sample S1-SN N times (N is any positive integer). Each sampling corresponds to at least one sampling signal. For example, sampling S1 can obtain the sampling signal AS1. The sampling time difference between two adjacent sampling signals AS1-ASN is equal to the sum of the first period T1 and the first time shift TS, and the first time shift TS is smaller than the first period T1. For example, the time difference between the sampled signal AS1 and the sampled signal AS1 is the sum of the first period T1 and the first time shift TS. In this embodiment, the sampling module 110 measures the target signal T with the first period T1 by identifying the feature point FP and using the feature point FP as a trigger. times sampling. If the result signal RS is an image signal, the frame number is N. In this embodiment, the first time shift TS is equal to the quotient of dividing the first period T1 by the number of frames of the resultant signal RS.

於一實施例中，當取樣模組110的取樣週期ST小於第一週期T1時，取樣模組110可以於一次取樣中進行多次子取樣。舉例來說，請參照圖2，取樣模組110識別特徵點FP後，進行取樣S1，其中取樣S1包含兩次子取樣S1-1、S1-2來獲得取樣訊號。子取樣S1-1、S1-2之間的時間差為取樣模組110的取樣週期ST。如此，當取樣模組110的效能高或可以提供較短取樣週期ST(小於第一週期T1)時，取樣模組110可以因為偵測較少的特徵點FP次數，所以可更快地完成取樣並疊加出結果訊號RS。須說明的是，圖2中子取樣的次數僅是舉例並非為了限制本發明，當取樣模組110可以提供更佳的效能時，子取樣的次數可以更加提升。In one embodiment, when the sampling period ST of the sampling module 110 is smaller than the first period T1, the sampling module 110 can perform multiple sub-sampling in one sampling. For example, referring to FIG. 2 , after identifying the feature point FP, the sampling module 110 performs sampling S1 , wherein the sampling S1 includes two sub-samplings S1 - 1 and S1 - 2 to obtain a sampling signal. The time difference between the sub-samples S1-1 and S1-2 is the sampling period ST of the sampling module 110 . In this way, when the sampling module 110 has high performance or can provide a shorter sampling period ST (less than the first period T1 ), the sampling module 110 can complete the sampling faster because it detects fewer feature points FP. And superimpose the result signal RS. It should be noted that the number of sub-sampling in FIG. 2 is only an example and not intended to limit the present invention. When the sampling module 110 can provide better performance, the number of sub-sampling can be further increased.

於一實施例中，取樣模組110可以透過其他元件輔助識別特徵點，且取樣模組110並不一定要針對目標訊號進行取樣。請參照圖3，訊號擷取系統200包含取樣模組210、整合模組120以及特徵識別模組230。具體來說，特徵識別模組230可以設置於目標P的部位A處，來識別目標訊號T中的特徵點FP。而取樣模組210可以設置於目標P的部位B處，來進行部位B訊號的擷取。以圖3的示例來說，目標P的部位A可以為胸口或者是任意習知取得心電訊號的位置，目標P的部位B可以為手腕來量測腕脈訊號。當特徵識別模組230識別出目標訊號T的特徵點FP時，例如提供觸發訊號Trigger至取樣模組210，取樣模組210可以於部位B上進行取樣而得到取樣訊號AS1-ASN。最後透過整合模組120進行運算或疊加以生成結果訊號RS。於此實施例中，當例如但不限於取樣模組210所要設置的位置難以偵測特徵點FP時，可以透過特徵識別模組230設置於易接收或量測目標訊號T的位置來提供取樣模組210觸發訊號Trigger，來減少誤判或失誤的機率。In one embodiment, the sampling module 110 can assist in identifying the feature points through other components, and the sampling module 110 does not necessarily need to sample the target signal. Referring to FIG. 3 , the signal acquisition system 200 includes a sampling module 210 , an integration module 120 and a feature identification module 230 . Specifically, the feature identification module 230 can be disposed at the position A of the target P to identify the feature point FP in the target signal T. The sampling module 210 can be set at the position B of the target P to capture the signal of the position B. Taking the example of FIG. 3 as an example, the part A of the target P can be the chest or any known location where the ECG signal is obtained, and the part B of the target P can be the wrist to measure the wrist pulse signal. When the feature identification module 230 identifies the feature point FP of the target signal T, for example, a trigger signal Trigger is provided to the sampling module 210 , and the sampling module 210 can sample the portion B to obtain the sampling signals AS1-ASN. Finally, the integration module 120 performs operation or superposition to generate the result signal RS. In this embodiment, when, for example, but not limited to, the position to be set by the sampling module 210 is difficult to detect the feature point FP, the feature recognition module 230 can be set at a position where the target signal T is easily received or measured to provide the sampling model. Group 210 triggers the signal Trigger to reduce the chance of misjudgment or error.

於一實施例中，請參照圖4，本發明提供一種訊號擷取系統100，包含取樣模組110以及整合模組120。取樣模組110用以自目標訊號T中以特徵點FP為觸發進行複數取樣S1-S8而得到複數取樣訊號AS1-ASN。取樣模組110包括複數取樣元件110-1~110-8，每一個取樣元件110-1~110-8以第一時間位移TS的延遲依序取樣。舉例來說，取樣模組110為電訊號取樣模組時，取樣元件110-1~110-8可以為電極，或是取樣模組110為影像訊號取樣模組時，取樣元件110-1~110-8可以為感光元件。但本發明並不限於取樣模組110中取樣元件110-1~110-8的數量以及種類。整合模組120耦接自取樣模組，整合模組用以疊加該些取樣訊號以得到結果訊號RS。其中，特徵點FP以第一週期T1出現於目標訊號T中。取樣訊號AS1-ASN中相鄰的二者的取樣時間差等於第一時間位移TS。須說明的是，取樣訊號的數量可以為少於或多於取樣元件110-1~110-8的數量。舉例來說，當取樣訊號的數量少於取樣元件110-1~110-8的數量時，可以透過一個或多個取樣元件110-1~110-8進行取樣。當取樣訊號的數量多於取樣元件110-1~110-8的數量時，可以透過一個或多個取樣元件110-1~110-8依序進行取樣並且循環取樣至目標次數N。具體來說，本實施例中，例如當取樣模組110的效能無法支持多個取樣元件111-118同時進行取樣時，可以依序控制取樣元件110-1~110-8進行取樣。來達到在有限的硬體成本以及占用體積下提升訊號擷取的品質的目的。In an embodiment, please refer to FIG. 4 , the present invention provides a signal acquisition system 100 including a sampling module 110 and an integration module 120 . The sampling module 110 is used for performing complex sampling S1-S8 from the target signal T with the feature point FP as a trigger to obtain the complex sampling signals AS1-ASN. The sampling module 110 includes a plurality of sampling elements 110-1 to 110-8, and each of the sampling elements 110-1 to 110-8 is sampled in sequence with a delay of the first time shift TS. For example, when the sampling module 110 is an electrical signal sampling module, the sampling elements 110-1 to 110-8 can be electrodes, or when the sampling module 110 is an image signal sampling module, the sampling elements 110-1 to 110 -8 can be a photosensitive element. However, the present invention is not limited to the number and type of the sampling elements 110 - 1 to 110 - 8 in the sampling module 110 . The integration module 120 is coupled to the self-sampling module, and the integration module is used for superimposing the sampling signals to obtain the result signal RS. The feature point FP appears in the target signal T with a first period T1. The sampling time difference between two adjacent sampling signals AS1-ASN is equal to the first time shift TS. It should be noted that the number of sampling signals may be less than or more than the number of sampling elements 110-1 to 110-8. For example, when the number of sampling signals is less than the number of sampling elements 110-1 to 110-8, sampling can be performed through one or more sampling elements 110-1 to 110-8. When the number of sampling signals is more than the number of sampling elements 110-1 to 110-8, sampling can be performed sequentially through one or more sampling elements 110-1 to 110-8, and the sampling is performed cyclically to a target number of times N. Specifically, in this embodiment, for example, when the performance of the sampling module 110 cannot support simultaneous sampling by the plurality of sampling elements 111 - 118 , the sampling elements 110 - 1 - 110 - 8 can be controlled to perform sampling in sequence. In order to achieve the purpose of improving the quality of signal acquisition under the limited hardware cost and occupied volume.

請參照圖5，本發明提供一種訊號擷取方法，包含：步驟S1-1以一取樣模組以目標訊號中的特徵點為觸發進行複數取樣而得到複數取樣訊號。其中，該特徵點以一第一週期出現於該目標訊號中。其中，該些取樣訊號中相鄰的二者的取樣時間差等於該第一週期與一第一時間位移的和且該第一時間位移小於該第一週期。須說明的是，於一實施例中，可以在步驟S1-0中設定參數，例如但不限於取樣次數或是結果訊號的目標幀數。此外，在步驟S1-1取樣而得到取樣訊號後，可以依據取樣訊號進行是否要重新取樣的判斷J1，來避免取樣過程中例如有取樣不良或是目標訊號狀態有差異的情況。當透過判斷J2確認取樣次數以達到目標次數後，進入步驟S1-2疊加該些取樣訊號而得到一結果訊號。Referring to FIG. 5 , the present invention provides a signal acquisition method, comprising: step S1 - 1 , a sampling module uses a feature point in a target signal as a trigger to perform complex sampling to obtain a complex sampling signal. Wherein, the feature point appears in the target signal with a first period. Wherein, the sampling time difference between two adjacent ones of the sampling signals is equal to the sum of the first period and a first time shift, and the first time shift is smaller than the first period. It should be noted that, in an embodiment, parameters can be set in step S1-0, such as but not limited to the sampling times or the target frame number of the result signal. In addition, after the sampling signal is obtained by sampling in step S1 - 1 , the determination J1 of whether to re-sampling can be performed according to the sampling signal, so as to avoid the situation of poor sampling or difference in the state of the target signal during the sampling process. After the number of samplings is confirmed to reach the target number of times through the judgment J2, the process proceeds to step S1-2 and superimposes the sampling signals to obtain a result signal.

於一實施例中，本發明提供一種訊號擷取方法，包含：以一取樣模組以一目標訊號中的一特徵點為觸發進行複數取樣而得到複數取樣訊號；以及疊加該些取樣訊號而得到一結果訊號。其中，該特徵點以一第一週期出現於該目標訊號中。其中，該取樣模組包括複數取樣元件，每一該取樣元件以一第一時間位移的延遲依序取樣。該些取樣訊號中相鄰的二者的取樣時間差等於該第一時間位移。In one embodiment, the present invention provides a signal acquisition method, comprising: using a sampling module to perform complex sampling with a feature point in a target signal as a trigger to obtain a complex sampling signal; and superimposing the sampling signals to obtain a complex sampling signal; a result signal. Wherein, the feature point appears in the target signal with a first period. Wherein, the sampling module includes a plurality of sampling elements, and each sampling element is sequentially sampled with a delay of a first time shift. The sampling time difference between adjacent two of the sampling signals is equal to the first time shift.

本發明已由上述相關實施例加以描述，然而上述實施例僅為實施本發明之範例。必需指出的是，已揭露之實施例並未限制本發明之範圍。相反地，包含於申請專利範圍之精神及範圍之修改及均等設置均包含於本發明之範圍內。The present invention has been described by the above-mentioned related embodiments, however, the above-mentioned embodiments are only examples of implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, modifications and equivalent arrangements within the spirit and scope of the claims are intended to be included within the scope of the present invention.

100,200:訊號擷取系統 110,210:取樣模組 120,220:整合模組 230:特徵識別模組 AS1~ASN:取樣訊號 RS:結果訊號 T:目標訊號 FP:特徵點 T1:週期 TS:時間位移 S1~SN:取樣 Trigger:觸發訊號 P:目標 A,B:部位 S1-0,S1-1,S1-2:步驟 J1,J2:判斷100,200: Signal acquisition system 110,210: Sampling module 120,220:Integrated modules 230: Feature recognition module AS1~ASN: Sampling signal RS: result signal T: target signal FP: feature point T1: Period TS: Time Shift S1~SN: Sampling Trigger: trigger signal P: target A, B: part S1-0, S1-1, S1-2: Steps J1, J2: Judgment

圖1A為本發明第一實施例中，訊號擷取系統的示意圖。FIG. 1A is a schematic diagram of a signal acquisition system according to a first embodiment of the present invention.

圖1B為本發明第一實施例中，訊號擷取系統的取樣的時序示意圖。FIG. 1B is a schematic timing diagram of sampling of the signal acquisition system according to the first embodiment of the present invention.

圖2為本發明第二實施例中，訊號擷取系統的取樣的時序示意圖。FIG. 2 is a schematic diagram of the sampling timing of the signal acquisition system according to the second embodiment of the present invention.

圖3為本發明第三實施例中，訊號擷取系統的示意圖。FIG. 3 is a schematic diagram of a signal acquisition system in a third embodiment of the present invention.

圖4為本發明第三實施例中，訊號擷取系統的示意圖。FIG. 4 is a schematic diagram of a signal acquisition system according to a third embodiment of the present invention.

圖5為本發明第三實施例中，訊號擷取方法的流程圖。FIG. 5 is a flowchart of a signal acquisition method in a third embodiment of the present invention.

100:訊號擷取系統 100: Signal acquisition system

110:取樣模組 110: Sampling module

120:整合模組 120: Integrate modules

AS1~ASN:取樣訊號 AS1~ASN: Sampling signal

RS:結果訊號 RS: result signal

T:目標訊號 T: target signal

Claims (14)

一種訊號擷取方法，包含： 以一取樣模組以一目標訊號中的一特徵點為觸發進行複數取樣而得到複數取樣訊號；以及 疊加該些取樣訊號而得到一結果訊號； 其中，該特徵點以一第一週期出現於該目標訊號中； 其中，該些取樣訊號中相鄰的二者的取樣時間差等於該第一週期與一第一時間位移的和且該第一時間位移小於該第一週期。 A signal acquisition method, comprising: using a sampling module to perform complex sampling with a feature point in a target signal as a trigger to obtain a complex sampling signal; and superimposing the sampled signals to obtain a result signal; Wherein, the feature point appears in the target signal with a first cycle; Wherein, the sampling time difference between two adjacent ones of the sampling signals is equal to the sum of the first period and a first time shift, and the first time shift is smaller than the first period. 一種訊號擷取方法，包含： 以一取樣模組以一目標訊號中的一特徵點為觸發進行複數取樣而得到複數取樣訊號；以及 疊加該些取樣訊號而得到一結果訊號； 其中，該特徵點以一第一週期出現於該目標訊號中； 其中，該取樣模組包括複數取樣元件，每一該取樣元件以一第一時間位移的延遲依序取樣；該些取樣訊號中相鄰的二者的取樣時間差等於該第一時間位移。 A signal acquisition method, comprising: using a sampling module to perform complex sampling with a feature point in a target signal as a trigger to obtain a complex sampling signal; and superimposing the sampled signals to obtain a result signal; Wherein, the feature point appears in the target signal with a first cycle; Wherein, the sampling module includes a plurality of sampling elements, each sampling element samples sequentially with a delay of a first time shift; the sampling time difference of two adjacent ones of the sampling signals is equal to the first time shift. 如請求項1或2任一所述的訊號擷取方法，其中該結果訊號的幀數等於該些取樣訊號的數量。The signal acquisition method according to any one of claim 1 or 2, wherein the number of frames of the result signal is equal to the number of the sampled signals. 如請求項1或2任一所述的訊號擷取方法，其中該第一時間位移等於該第一週期除以該結果訊號的幀數的商。The signal acquisition method according to any one of claim 1 or claim 2, wherein the first time shift is equal to the quotient of dividing the first period by the number of frames of the resultant signal. 如請求項1或2任一所述的訊號擷取方法，其中該取樣模組為電阻抗訊號取樣模組。The signal acquisition method according to any one of claim 1 or 2, wherein the sampling module is an electrical impedance signal sampling module. 如請求項1或2任一所述的訊號擷取方法，其中該目標訊號為心電訊號、肺臟運動訊號與血管收縮訊號中至少其中之一者。The signal acquisition method according to any one of claim 1 or 2, wherein the target signal is at least one of an electrocardiogram signal, a lung motion signal and a vasoconstriction signal. 一種訊號擷取系統，包含： 一取樣模組，用以自一目標訊號中以一特徵點為觸發進行複數取樣而得到複數取樣訊號；以及 一整合模組，耦接自該取樣模組，該整合模組用以疊加該些取樣訊號以得到一結果訊號； 其中，該特徵點以一第一週期出現於該目標訊號中； 其中，該些取樣訊號中相鄰的二者的取樣時間差等於該第一週期與一第一時間位移的和且該第一時間位移小於該第一週期。 A signal acquisition system, comprising: a sampling module for performing complex sampling from a target signal with a feature point as a trigger to obtain a complex sampling signal; and an integration module coupled from the sampling module, the integration module is used for superimposing the sampling signals to obtain a result signal; Wherein, the feature point appears in the target signal with a first cycle; Wherein, the sampling time difference between two adjacent ones of the sampling signals is equal to the sum of the first period and a first time shift, and the first time shift is smaller than the first period. 一種訊號擷取系統，包含： 一取樣模組，用以自一目標訊號中以一特徵點為觸發進行複數取樣而得到複數取樣訊號；以及 一整合模組，耦接自該取樣模組，該整合模組用以疊加該些取樣訊號以得到一結果訊號； 其中，該特徵點以一第一週期出現於該目標訊號中； 其中，該取樣模組包括複數取樣元件，每一該取樣元件以一第一時間位移的延遲依序取樣；該些取樣訊號中相鄰的二者的取樣時間差等於該第一時間位移。 A signal acquisition system, comprising: a sampling module for performing complex sampling from a target signal with a feature point as a trigger to obtain a complex sampling signal; and an integration module coupled from the sampling module, the integration module is used for superimposing the sampling signals to obtain a result signal; Wherein, the feature point appears in the target signal with a first cycle; Wherein, the sampling module includes a plurality of sampling elements, each sampling element samples sequentially with a delay of a first time shift; the sampling time difference of two adjacent ones of the sampling signals is equal to the first time shift. 如請求項7或8任一所述的訊號擷取系統，其中該結果訊號的幀數等於該些取樣訊號的數量。The signal acquisition system according to any one of claim 7 or 8, wherein the number of frames of the result signal is equal to the number of the sampled signals. 如請求項7或8任一所述的訊號擷取系統，其中該第一時間位移等於該第一週期除以該結果訊號的幀數的商。The signal acquisition system of claim 7 or 8, wherein the first time shift is equal to the quotient of dividing the first period by the number of frames of the resultant signal. 如請求項7或8任一所述的訊號擷取系統，其中該取樣模組為電阻抗訊號取樣模組。The signal acquisition system according to any one of claim 7 or 8, wherein the sampling module is an electrical impedance signal sampling module. 如請求項7或8任一所述的訊號擷取系統，其中該目標訊號為心電訊號、肺臟運動訊號與血管收縮訊號中至少其中之一者。The signal acquisition system according to any one of claims 7 or 8, wherein the target signal is at least one of an electrocardiogram signal, a lung motion signal, and a vasoconstriction signal. 如請求項7或8任一所述的訊號擷取系統，還包含： 一特徵識別模組，耦接至該取樣模組，用以識別該特徵點並傳送一觸發訊號至該取樣模組； 其中該取樣模組依據該觸發訊號進行該些取樣。 The signal acquisition system according to any one of claim 7 or 8, further comprising: a feature identification module coupled to the sampling module for identifying the feature point and sending a trigger signal to the sampling module; The sampling module performs the sampling according to the trigger signal. 如請求項13所述的訊號擷取系統，其中該特徵識別模組設置於一目標的一第一部位，該取樣模組設置於該目標的一第二部位。The signal acquisition system of claim 13, wherein the feature identification module is arranged at a first part of a target, and the sampling module is arranged at a second part of the target.
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