TWI556797B - Motion/interference sensor - Google Patents
Motion/interference sensor Download PDFInfo
- Publication number
- TWI556797B TWI556797B TW102109406A TW102109406A TWI556797B TW I556797 B TWI556797 B TW I556797B TW 102109406 A TW102109406 A TW 102109406A TW 102109406 A TW102109406 A TW 102109406A TW I556797 B TWI556797 B TW I556797B
- Authority
- TW
- Taiwan
- Prior art keywords
- unit
- signal
- action
- oscillating
- output
- Prior art date
Links
Description
本揭露是有關於一種動作/擾動偵測器。 The disclosure is directed to an action/disturbance detector.
隨著人口高齡化的社會趨勢影響下，醫療照顧服務及生醫電子的發展備受矚目。結合無線通訊的遠端居家照料(Remote Homecare)則可讓患者不須前往醫院即可進行生理訊號的感測與記錄以節省醫療資源。 With the social trend of an aging population, the development of medical care services and biomedical electronics has attracted much attention. Remote Homecare, combined with wireless communication, allows patients to sense and record physiological signals without having to go to the hospital to save medical resources.
在生理訊號感測中，呼吸訊號及心跳訊號極端重要，其可應用在呼吸窒息症(Obstructive Sleep Apnea Syndrome；OSAS)與心跳規律的長期追蹤上。而OSAS長期以來占據嬰兒猝死死因的前三名，心血管疾病更是影響已開發國家人民健康甚鉅。 In physiological signal sensing, respiratory signals and heartbeat signals are extremely important, and they can be applied to long-term tracking of Obstructive Sleep Apnea Syndrome (OSAS) and heartbeat patterns. OSAS has long occupied the top three deaths of infants, and cardiovascular disease has affected the health of people in developed countries.
目前有接觸式生理訊號感測裝置與非接觸式生理訊號感測裝置。接觸式生理訊號感測裝置透過接觸人體的方式來進行量測。 Currently, there are contact physiological signal sensing devices and non-contact physiological signal sensing devices. The contact physiological signal sensing device performs measurement by contacting the human body.
此外，動作/擾動偵測器用於保全監視或在場人員辨識。一般，以紅外線技術實現動作/擾動偵測器。但紅外線技術容 易因環境溫度影響而誤判，甚至無法偵測。 In addition, the motion/disturbance detector is used to preserve surveillance or presence identification. Generally, an action/disturbance detector is implemented by infrared technology. But infrared technology capacity It is easy to be misjudged due to the influence of ambient temperature, and even cannot be detected.
微波式動作偵測器利用都普勒原理，比較發射訊號與接收訊號之間的相位差。若相位差產生變化，則代表環境中有擾動源。 The microwave motion detector uses the Doppler principle to compare the phase difference between the transmitted signal and the received signal. If the phase difference changes, it means there is a source of disturbance in the environment.
故而，本案提出一種動作/擾動偵測器，可偵測待測者的胸腔起伏，進而從中分析出待測者之生理參數(如呼吸、心跳頻率等)，或其他外界擾動資訊(如機械振動頻率等)。 Therefore, this case proposes an action/disturbance detector that can detect the chest undulation of the subject, and then analyze the physiological parameters of the person to be tested (such as breathing, heart rate, etc.), or other external disturbance information (such as mechanical vibration). Frequency, etc.).
根據本揭露之一示範性實施例，提出一種動作/擾動偵測器，其包括：收發單元、振盪單元與混頻單元。該收發單元接收該振盪單元之一輸出訊號並朝向至少一物體發射出一偵測訊號。該偵測訊號被該物體反射成一反射偵測訊號，被該收發單元所接收。該收發單元將該反射偵測訊號送入該振盪單元使其產生自我注入鎖定現象，並將該反射偵測訊號送入該混頻單元，以進行頻率解調。該混頻單元混頻該收發單元所傳來的該反射偵測訊號與該振盪單元之該輸出訊號，並解調成一基頻輸出訊號，該基頻輸出訊號代表一動作/擾動資訊。 According to an exemplary embodiment of the present disclosure, an action/disturbance detector is provided, including: a transceiver unit, an oscillating unit, and a mixing unit. The transceiver unit receives an output signal of the oscillating unit and transmits a detection signal to the at least one object. The detection signal is reflected by the object into a reflection detection signal and is received by the transceiver unit. The transceiver unit sends the reflection detection signal to the oscillating unit to generate a self-injection locking phenomenon, and sends the reflection detection signal to the mixing unit for frequency demodulation. The mixing unit mixes the reflected detection signal transmitted by the transceiver unit with the output signal of the oscillating unit, and demodulates into a fundamental frequency output signal, where the fundamental frequency output signal represents an action/disturbance information.
為了對本案之上述及其他內容有更佳的瞭解，下文特舉實施例，並配合所附圖式，作詳細說明如下： In order to better understand the above and other contents of the present application, the following specific embodiments, together with the drawings, are described in detail below:
100、100’、200、100A、100B、100C、100D‧‧‧動作/擾動偵測器 100, 100', 200, 100A, 100B, 100C, 100D‧‧‧ action/disturbance detectors
10、10A、10B、10C、10D‧‧‧收發單元 10, 10A, 10B, 10C, 10D‧‧‧ transceiver unit
20‧‧‧振盪單元 20‧‧‧Oscillation unit
30‧‧‧混頻單元 30‧‧‧mixing unit
40‧‧‧處理單元 40‧‧‧Processing unit
11、11A、12A、11B、11C、12C‧‧‧天線 11, 11A, 12A, 11B, 11C, 12C‧‧‧ antenna
N1‧‧‧節點 N1‧‧‧ node
31‧‧‧混波器 31‧‧‧Mixer
32‧‧‧低通濾波器 32‧‧‧Low-pass filter
SU‧‧‧受測者 SU‧‧‧ Subjects
11D‧‧‧電光轉換器 11D‧‧‧Electro-optical converter
12D‧‧‧光電轉換器 12D‧‧‧ photoelectric converter
第1A圖顯示根據本案實施例之動作/擾動偵測器之方塊示意 圖。 FIG. 1A shows a block diagram of an action/disturbance detector according to an embodiment of the present invention. Figure.
第1B圖顯示根據本案另一實施例之動作/擾動偵測器之方塊示意圖。 FIG. 1B is a block diagram showing an action/disturbance detector according to another embodiment of the present invention.
第2圖繪示本案之動作/擾動偵測器之一實施例。 Figure 2 illustrates an embodiment of the motion/disturbance detector of the present invention.
第3圖與第4圖顯示根據本案實施例之實驗結果。 Figures 3 and 4 show experimental results in accordance with an embodiment of the present invention.
第5A圖至第5D圖顯示根據本案其他實施例之其他幾種可能做法。 Figures 5A through 5D show several other possible approaches in accordance with other embodiments of the present invention.
本說明書的技術用語係參照本技術領域之習慣用語，如本說明書對部分用語有加以說明或定義，該部分用語之解釋係以本說明書之說明或定義為準。另外，在可能實施的前提下，本說明書所描述之物件或事件間的相對關係，涵義可包含直接或間接的關係，所謂「間接」係指物件間尚有中間物或物理空間的存在，或指事件間尚有中間事件或時間間隔的存在。再者，以下內容係關於訊號耦合電路及方法，對於該領域習見的技術或原理，若不涉及本案之技術特徵，將不予贅述。此外，圖示中元件之形狀、尺寸、比例以及流程之步驟順序等僅為示意，係供本技術領域具有通常知識者瞭解本案之用，非對本案之實施範圍加以限制。 The technical terms of the present specification refer to the idioms in the technical field, and some of the terms are explained or defined in the specification, and the explanation of the terms is based on the description or definition of the specification. In addition, the relative relationship between the objects or events described in this specification may include direct or indirect relationships, and the term "indirect" means that there is an intermediate or physical space between the objects, or Refers to the existence of intermediate events or time intervals between events. Furthermore, the following content is related to the signal coupling circuit and method, and the technical or principle of the prior art will not be described if it does not involve the technical features of the present case. In addition, the shapes, dimensions, proportions, and sequence steps of the elements in the drawings are merely illustrative, and are intended to be used by those of ordinary skill in the art to understand the present invention, and are not intended to limit the scope of the present invention.
另外，以下說明內容之各個實施例分別具有一或多個技術特徵，然此並不意味著使用本案者必需同時實施任一實施 例中的所有技術特徵，或僅能分開實施不同實施例中的一部或全部技術特徵。換句話說，在可能實施的前提下，本技術領域具有通常知識者可依據本案之揭露內容，並視自身的需求或設計理念，選擇性地實施任一實施例中部分或全部的技術特徵，或者選擇性地實施複數個實施例中部分或全部的技術特徵之組合，藉此增加本案實施彈性。 In addition, each embodiment of the following description has one or more technical features, respectively, but this does not mean that any one of the implementations must be implemented at the same time. All of the technical features in the examples, or only one or all of the technical features in the different embodiments can be implemented separately. In other words, those skilled in the art can selectively implement some or all of the technical features of any embodiment according to the needs of the present disclosure or the design concept. Alternatively, a combination of some or all of the technical features of the plurality of embodiments may be selectively implemented, thereby increasing the flexibility of the implementation of the present invention.
本案之揭露內容包含動作/擾動偵測器，但本案實施例之技術特徵並非對本案之限制，僅供本案舉例說明暨本技術領域人士瞭解本案之用。此外，在可能實施的前提下，本技術領域具有通常知識者能夠依據本案揭露內容來選擇等效之元件或步驟來實現本案，亦即本案之實施並不侷限於本案所揭露之實施例。 The disclosure of the present invention includes an action/disturbance detector, but the technical features of the embodiments of the present invention are not limited to the present case, and are only for the purpose of exemplifying the case and those skilled in the art understand the use of the case. In addition, those skilled in the art can select equivalent elements or steps to implement the present invention according to the disclosure of the present invention, that is, the implementation of the present invention is not limited to the embodiments disclosed in the present disclosure.
另外，如果本案之動作/擾動偵測器所包含之個別元件為已知元件的話，在不影響充分揭露及可據以實現的情形下，以下說明對於實現之個別元件的細節將予以節略。 In addition, if the individual components included in the action/disturbance detector of the present invention are known components, the following description will abbreviate the details of the individual components implemented without affecting the full disclosure and implementation.
本案實施例揭露動作/擾動偵測器，其可用於非接觸式/接觸式偵測受測者的心肺訊號。在底下的說明中，乃是非接觸式偵測為例做說明，但當知其並非用於限制本案，本案亦可用於接觸式偵測。 The embodiment of the present invention discloses an action/disturbance detector, which can be used for non-contact/contact detection of the heart and lung signals of the subject. In the description below, non-contact detection is used as an example, but it is not used to limit the case. This case can also be used for contact detection.
動作/擾動偵測器可發出無線電波/光偵測波來對受測者進行偵測。由於受測者在偵測期間之呼吸與心跳等生理現象所產生之都普勒效應，會對動作/擾動偵測器所發射之無線電波/ 光偵測波進行相位調制，將反射後之射頻訊號/光偵測波輸入至振盪單元。故而，振盪單元呈現自我注入鎖定現象，此自我注入鎖定現象會放大受測者之心肺活動之相位調制資訊，以易於觀察受測者之心肺活動。經由混頻單元進行降頻後輸出電壓訊號，此電壓訊號輸入至訊號處理單元即可得到環境中振動物體(如受測者的心肺)的時域波形與頻域訊號，可偵測振動物體的頻率(比如，可偵測出受測者的心肺訊號)。 The motion/disturbance detector can emit radio waves/light detection waves to detect the subject. The radio wave emitted by the motion/disturbance detector due to the Doppler effect produced by the subject during the detection period, such as breathing and heartbeat The light detecting wave performs phase modulation, and the reflected RF signal/photodetection wave is input to the oscillating unit. Therefore, the oscillating unit exhibits a self-injection locking phenomenon, which amplifies the phase modulation information of the subject's cardiopulmonary activity, so as to easily observe the heart and lung activity of the subject. After the frequency reduction unit outputs a voltage signal, the voltage signal is input to the signal processing unit to obtain a time domain waveform and a frequency domain signal of the vibrating object in the environment (such as the heart and lung of the subject), and the vibration object can be detected. Frequency (for example, the cardiopulmonary signal of the subject can be detected).
現請參照第1A圖，其顯示根據本案實施例之動作/擾動偵測器之方塊示意圖。如第1A圖所示，動作/擾動偵測器100包括：收發單元10、振盪單元20與混頻單元30。 Referring now to Figure 1A, there is shown a block diagram of an action/disturbance detector in accordance with an embodiment of the present invention. As shown in FIG. 1A, the motion/disturbance detector 100 includes a transceiver unit 10, an oscillating unit 20, and a mixing unit 30.
收發單元10電性連接至振盪單元20之差動訊號輸出埠之一端，以接收振盪單元20之輸出訊號並朝向受測者發射出射頻發射訊號/光偵測波(亦可稱為偵測訊號)。此射頻發射訊號/光偵測波會被受測者所反射。收發單元10接收由受測者所反射的射頻接收訊號/光反射波(亦可稱為反射偵測訊號)。收發單元10係電性連接至振盪單元20之輸入埠與混頻單元30之輸入埠。細言之，收發單元10將反射偵測訊號送入振盪單元20使其產生自我注入鎖定現象，並將反射偵測訊號送入混頻單元30，以進行頻率解調。 The transceiver unit 10 is electrically connected to one end of the differential signal output port of the oscillating unit 20 to receive the output signal of the oscillating unit 20 and emit a radio frequency transmitting signal/photodetecting wave (also referred to as a detecting signal) toward the subject. ). This RF transmit signal/photodetection wave is reflected by the subject. The transceiver unit 10 receives the radio frequency receiving signal/light reflected wave (also referred to as a reflection detecting signal) reflected by the subject. The transceiver unit 10 is electrically connected to the input port of the oscillating unit 20 and the input port of the mixing unit 30. In detail, the transceiver unit 10 sends the reflection detection signal to the oscillating unit 20 to generate a self-injection locking phenomenon, and sends the reflection detection signal to the mixing unit 30 for frequency demodulation.
至於接收由收發單元10所傳來的反射偵測訊號，振盪單元20可由其獨立注入訊號輸入埠來接收，或者是由其差動訊號輸出埠來接收。 As for receiving the reflection detection signal transmitted by the transceiver unit 10, the oscillating unit 20 can be received by its independent injection signal input , or by its differential signal output 埠.
混頻單元30之一輸入埠電性連接振盪單元20之另一差動訊號輸出埠。混頻單元30混頻收發單元10所傳來的反射偵測訊號與振盪單元20之輸出訊號。混頻單元30將受測者生理訊號的頻率調制訊號(其含於收發單元10所傳來的反射偵測訊號內)解調成基頻輸出訊號(其為電壓訊號)，基頻輸出訊號可代表動作/擾動資訊。 One of the mixing units 30 inputs a further differential signal output 埠 electrically coupled to the oscillating unit 20. The mixing unit 30 mixes the reflected detection signal transmitted from the transceiver unit 10 with the output signal of the oscillating unit 20. The frequency mixing unit 30 demodulates the frequency modulation signal of the physiological signal of the subject (which is included in the reflection detecting signal transmitted from the transceiver unit 10) into a fundamental frequency output signal (which is a voltage signal), and the fundamental frequency output signal can be Represents action/disturbance information.
於本案另一實施例中，動作/擾動偵測器可更包括處理單元。如第1B圖所示，其顯示根據本案另一實施例之動作/擾動偵測器100’之方塊示意圖。動作/擾動偵測器100’更包括處理單元40。 In another embodiment of the present disclosure, the motion/disturbance detector may further include a processing unit. As shown in Fig. 1B, a block diagram of an action/disturbance detector 100' in accordance with another embodiment of the present invention is shown. The motion/disturbance detector 100' further includes a processing unit 40.
亦即，處理單元可以不被整合在動作/擾動偵測器之中(如第1A圖)，也可被整合於動作/擾動偵測器之中(如第1B圖)。甚至，於本案其他可能實施例中，處理單元可置放於遠端，而動作/擾動偵測器的混頻單元30所輸出的基頻輸出訊號可透過有線/無線方式來傳送至遠端的處理單元，此皆在本案精神範圍內。 That is, the processing unit may not be integrated into the motion/disturbance detector (as in FIG. 1A), or may be integrated into the motion/disturbance detector (eg, FIG. 1B). Even in other possible embodiments of the present invention, the processing unit can be placed at the remote end, and the fundamental frequency output signal output by the mixing unit 30 of the motion/disturbance detector can be transmitted to the remote end through a wired/wireless manner. Processing unit, which is within the spirit of the case.
處理單元40之輸出埠係電性連接至振盪單元20之電壓輸入埠。處理單元40輸出控制電壓給振盪單元20，以決定振盪單元20之操作頻率。處理單元40對混頻單元30所傳來的基頻輸出訊號進行處理(譬如但不受限於，數位濾波、放大、傅立葉轉換等)，以得到動作/擾動資訊(其譬如但不受限於受測者的呼吸及心跳之時域波形與頻率等)。 The output of the processing unit 40 is electrically connected to the voltage input 振荡 of the oscillating unit 20. The processing unit 40 outputs a control voltage to the oscillating unit 20 to determine the operating frequency of the oscillating unit 20. The processing unit 40 processes the fundamental frequency output signal transmitted by the mixing unit 30 (such as, but not limited to, digital filtering, amplification, Fourier transform, etc.) to obtain motion/disturbance information (such as but not limited to The time domain waveform and frequency of the subject's breathing and heartbeat, etc.).
現請參閱第2圖，其顯示本案之動作/擾動偵測器200之一實施例。在本實施例中，收發單元10包含天線11。天線11係電性連接振盪單元20之一輸出端與混頻單元30之一輸入埠。於第2圖中，節點N1比如使得天線11直接連接至振盪單元20與混頻單元30。或者，於其他可能實施例中，節點N1可為循環電路(circulator)或功率分配器(power divider)。 Referring now to Figure 2, an embodiment of the motion/disturbance detector 200 of the present invention is shown. In the present embodiment, the transceiver unit 10 includes an antenna 11. The antenna 11 is electrically connected to one of the output ends of the oscillating unit 20 and one of the input units of the mixing unit 30. In FIG. 2, the node N1, for example, causes the antenna 11 to be directly connected to the oscillating unit 20 and the mixing unit 30. Alternatively, in other possible embodiments, node N1 may be a circulator or a power divider.
如第2圖所示，振盪單元20具有：電壓輸入埠V、差動訊號輸出埠O1及O2。電壓輸入埠V接收由處理單元40所傳來的類比控制電壓VT。在本實施例中，振盪單元20的差動訊號輸出埠O1係電性連接至收發單元10的天線11，以將輸出訊號SOUT1傳送給天線11。天線11將振盪單元20的輸出訊號SOUT1朝受測者SU發射，於第2圖中，射向受測者SU的訊號係為發射訊號STX。此發射訊號STX經受測者SU之心肺訊號進行頻率調制後成為射頻接收訊號SRX(亦即，都普勒效應)。此射頻接收訊號SRX被天線11所接收，並成為兩路注入訊號SIN1與SIN2(基本上，此兩路注入訊號SIN1與SIN2是相同的)。注入訊號SIN1係經由振盪單元20的差動訊號輸出埠O1而輸入至振盪單元20。此注入訊號SIN1使振盪單元20操作在自我注入鎖定狀態。另一路注入訊號SIN2則輸入至混頻單元30，以進行混頻。 As shown in FIG. 2, the oscillating unit 20 has a voltage input 埠V, and a differential signal output 埠O1 and O2. The voltage input 埠V receives the analog control voltage VT transmitted by the processing unit 40. In this embodiment, the differential signal output 埠O1 of the oscillating unit 20 is electrically connected to the antenna 11 of the transceiver unit 10 to transmit the output signal SOUT1 to the antenna 11. The antenna 11 transmits the output signal SOUT1 of the oscillating unit 20 toward the subject SU. In Fig. 2, the signal directed to the subject SU is the transmission signal STX. The transmitted signal STX is subjected to frequency modulation by the heart-pulse signal of the tester SU to become the RF receive signal SRX (ie, the Doppler effect). The RF receive signal SRX is received by the antenna 11 and becomes two injection signals SIN1 and SIN2 (basically, the two injection signals SIN1 and SIN2 are identical). The injection signal SIN1 is input to the oscillation unit 20 via the differential signal output 埠O1 of the oscillating unit 20. This injection signal SIN1 causes the oscillating unit 20 to operate in a self-injection locked state. The other injection signal SIN2 is input to the mixing unit 30 for mixing.
在第2圖中，混頻單元30有兩個輸入埠與一個輸出埠。混頻單元30的一輸入埠連接至收發單元10的天線11。混頻單元30的另一輸入埠連接至振盪單元20的差動訊號輸出埠O2， 用以觀察振盪單元20輸出之頻率變化情況。混頻單元30的輸出埠連接至處理單元40。 In Fig. 2, the mixing unit 30 has two input ports and one output port. An input port of the mixing unit 30 is connected to the antenna 11 of the transceiver unit 10. The other input 埠 of the mixing unit 30 is connected to the differential signal output 埠O2 of the oscillating unit 20, It is used to observe the frequency change of the output of the oscillating unit 20. The output 埠 of the mixing unit 30 is connected to the processing unit 40.
混頻單元30包括混波器31及低通濾波器32。混波器31連接至收發單元10與振盪單元20。低通濾波器32則連接至混波器31與處理單元40。在本實施例中，混波器31的兩端係分別電性連接至收發單元10與振盪單元20之差動訊號輸出埠O2。在本實施例中，混頻單元30之輸出端係為低通濾波器32之輸出端。 The mixing unit 30 includes a mixer 31 and a low pass filter 32. The mixer 31 is connected to the transceiver unit 10 and the oscillating unit 20. The low pass filter 32 is then coupled to the mixer 31 and the processing unit 40. In this embodiment, the two ends of the mixer 31 are electrically connected to the differential signal output 埠O2 of the transceiver unit 10 and the oscillating unit 20, respectively. In the present embodiment, the output of the mixing unit 30 is the output of the low pass filter 32.
在本實施例中，處理單元40係電性連接至振盪單元20之電壓輸入埠V。處理單元40產生類比控制電壓VT，以調整振盪單元20之輸出頻率，以在工作頻段內進行訊號感測。處理單元40電性連接至混頻單元30的輸出端(亦即低通濾波器32之輸出端)，以將混頻單元30所輸出之基頻輸出訊號SB進行取樣及訊號處理後，得到呼吸及心跳的時域波形與頻率。 In this embodiment, the processing unit 40 is electrically connected to the voltage input 埠V of the oscillating unit 20. The processing unit 40 generates an analog control voltage VT to adjust the output frequency of the oscillating unit 20 to perform signal sensing in the operating frequency band. The processing unit 40 is electrically connected to the output end of the mixing unit 30 (that is, the output end of the low-pass filter 32) to sample and signal the fundamental frequency output signal SB output by the mixing unit 30 to obtain a breath. And the time domain waveform and frequency of the heartbeat.
現請參閱第3圖至第4圖，其顯示根據本案實施例之實驗結果。在本實施例中，受測者距離動作/擾動偵測器約一公尺處，坐在椅子上均勻地呼吸。動作/擾動偵測器之操作頻率約為2.45GHz(當知其並非用以限制本案)。第3圖乃是時域波形，其包含呼吸與心跳等生理資訊。請再參閱第4圖，經過傅立葉轉換後，頻譜表現如第4圖所示，可辨識出呼吸主頻與心跳主頻分別約為0.284Hz與1.222Hz，即17呼吸次數/分鐘與73心跳次數/分鐘。由此可知，本案實施例的動作/擾動偵測器的偵測結果與 其他醫療儀器感測結果相吻合。 Referring now to Figures 3 through 4, there are shown experimental results in accordance with embodiments of the present invention. In this embodiment, the subject is about one meter away from the motion/disturbance detector and sits on the chair to breathe evenly. The operating frequency of the motion/disturbance detector is approximately 2.45 GHz (when it is known that it is not intended to limit the case). Figure 3 is a time domain waveform containing physiological information such as breathing and heartbeat. Please refer to Figure 4 again. After Fourier transform, the spectrum performance is as shown in Figure 4. It can be recognized that the main frequency of the respiratory and the main frequency of the heartbeat are about 0.284 Hz and 1.222 Hz, respectively, that is, 17 breaths/minute and 73 heartbeats. /minute. Therefore, the detection result of the action/disturb detector of the embodiment of the present invention is The results of other medical instruments are consistent.
本案亦可其他可能實施例之架構。第5A圖至第5D圖顯示根據本案其他實施例之其他幾種可能做法。請注意，雖然第5A圖至第5D圖的動作/擾動偵測器包括處理單元，但由上述實施例可知，第5A圖至第5D圖的動作/擾動偵測器亦可選擇性包括處理單元，其皆在本案精神範圍內。 This case may also be the architecture of other possible embodiments. Figures 5A through 5D show several other possible approaches in accordance with other embodiments of the present invention. Please note that although the motion/disturbance detectors of FIGS. 5A to 5D include processing units, it can be seen from the above embodiments that the motion/disturbance detectors of FIGS. 5A to 5D may optionally include a processing unit. They are all within the spirit of the case.
在第5A圖的動作/擾動偵測器100A中，收發單元10A為雙天線設計，其包括(發射)天線11A與(接收)天線12A。振盪單元20A的差動訊號輸出埠O2係分別電性連接天線11A與混頻單元30。天線11A發射出射頻發射訊號給受測者。射頻接收訊號(由物體所反射回)係由天線12A接收。所接收的射頻接收訊號分別連接至振盪單元20A差動訊號輸出埠O1與混頻單元30的一輸入埠，使振盪單元20A產生自我注入鎖定現象，並使混頻單元30進行頻率解調。第5A圖之操作細節原則上相似於第1A圖、第1B圖與第2圖，故在此不重述。 In the motion/disturbance detector 100A of FIG. 5A, the transceiver unit 10A is a dual antenna design including (transmitting) an antenna 11A and a (receiving) antenna 12A. The differential signal output 埠O2 of the oscillating unit 20A is electrically connected to the antenna 11A and the mixing unit 30, respectively. The antenna 11A emits a radio frequency transmission signal to the subject. The RF receive signal (reflected back by the object) is received by antenna 12A. The received RF receiving signals are respectively connected to the differential signal output 埠O1 of the oscillating unit 20A and an input 埠 of the mixing unit 30, so that the oscillating unit 20A generates a self-injection locking phenomenon and causes the mixing unit 30 to perform frequency demodulation. The operation details of Fig. 5A are similarly similar to those of Fig. 1A, Fig. 1B, and Fig. 2, and therefore will not be repeated here.
現請參考第5B圖。在第5B圖的動作/擾動偵測器100B中，收發單元10B為單天線設計，其包括天線11B。振盪單元20B係具有電壓輸入埠V、注入訊號輸入埠I、及差動訊號輸出埠O1及O2。天線11B係分別電性連接至振盪單元20B差動訊號輸出埠O1、振盪單元20的注入訊號輸入埠I、及混頻單元30之一輸入埠。天線11B發射出射頻發射訊號至受測者，並接收由受測者所反射回的射頻接收訊號。在接收到射頻接收訊號後，天 線11B將射頻接收訊號分別注入至振盪單元20B的注入訊號輸入埠I與混頻單元30的輸入埠，使振盪單元20B產生自我注入鎖定現象，並使混頻單元30進行頻率解調。混頻單元30之另一輸入埠係電性連接至振盪單元20B的差動訊號輸出埠O2。第5B圖之操作細節原則上相似於第1A圖、第1B圖與第2圖，故在此不重述。在第5B圖中，節點N2比如可為循環電路或功率分配器。 Please refer to Figure 5B now. In the motion/disturbance detector 100B of FIG. 5B, the transceiver unit 10B is a single antenna design including an antenna 11B. The oscillating unit 20B has a voltage input 埠V, an injection signal input 埠I, and a differential signal output 埠O1 and O2. The antenna 11B is electrically connected to the differential signal output 埠O1 of the oscillating unit 20B, the injection signal input 埠I of the oscillating unit 20, and one input 埠 of the mixing unit 30, respectively. The antenna 11B emits a radio frequency transmission signal to the subject and receives the radio frequency receiving signal reflected by the subject. After receiving the RF reception signal, the day The line 11B injects the RF receiving signal into the input signal input 埠I of the oscillating unit 20B and the input 埠 of the mixing unit 30, respectively, causes the oscillating unit 20B to generate a self-injection locking phenomenon, and causes the mixing unit 30 to perform frequency demodulation. The other input system of the mixing unit 30 is electrically connected to the differential signal output 埠O2 of the oscillating unit 20B. The operation details of FIG. 5B are similar in principle to FIG. 1A, FIG. 1B and FIG. 2, and therefore will not be repeated here. In Figure 5B, node N2 can be, for example, a loop circuit or a power splitter.
現請參考第5C圖。在第5C圖中，收發單元10C為雙天線設計，其包括(發射)天線11C及(接收)天線12C。振盪單元20C具有電壓輸入埠V、注入訊號輸入埠I、及差動訊號輸出埠O1及O2。天線11C係電性連接至振盪單元20C的差動訊號輸出埠O1，發射出射頻發射訊號給受測者。由受測者所反射回的射頻接收訊號由天線12C接收。天線12C係分別電性連接振盪單元20C的注入訊號輸入埠I與混頻單元30的輸入埠，使振盪單元20C產生自我注入鎖定現象，並使混頻單元30進行頻率解調。混頻單元30之另一輸入埠係電性連接至振盪單元20C的差動訊號輸出埠O2。第5C圖之操作細節原則上相似於第1A圖、第1B圖與第2圖，故在此不重述。 Please refer to Figure 5C for details. In FIG. 5C, the transceiver unit 10C is a dual antenna design including a (transmitting) antenna 11C and a (receiving) antenna 12C. The oscillating unit 20C has a voltage input 埠V, an injection signal input 埠I, and a differential signal output 埠O1 and O2. The antenna 11C is electrically connected to the differential signal output 埠O1 of the oscillating unit 20C, and emits a radio frequency transmission signal to the subject. The radio frequency receiving signal reflected by the subject is received by the antenna 12C. The antenna 12C is electrically connected to the input signal input 埠I of the oscillating unit 20C and the input 埠 of the mixing unit 30, respectively, so that the oscillating unit 20C generates a self-injection locking phenomenon and causes the frequency mixing unit 30 to perform frequency demodulation. The other input system of the mixing unit 30 is electrically connected to the differential signal output 埠O2 of the oscillating unit 20C. The operation details of FIG. 5C are similarly similar to those of FIG. 1A, FIG. 1B, and FIG. 2, and therefore will not be repeated here.
現請參考第5D圖，其顯示根據本案另一可能實施例之動作/擾動偵測器的實施方式。如第5D圖所示，不同於先前實施例之處在於，收發單元10D包括電光轉換器11D與光電轉換器12D。電光轉換器11D連接至振盪單元20，其將振盪單元20所傳來的電壓訊號轉換為光波，以射向受測者。此光波被受測者 反射回光電轉換器後，由光電轉換器12D轉換成電壓訊號，送至振盪單元20與混頻單元30。至於振盪單元20、混頻單元30與處理單元40的細節可如上述。由於電光轉換器與光電轉換器的雜訊比(SNR)較佳，故而，第5D圖的架構更有助於觀察受測者的動作/擾動。 Reference is now made to Fig. 5D, which shows an embodiment of an action/disturbance detector in accordance with another possible embodiment of the present invention. As shown in FIG. 5D, unlike the previous embodiment, the transceiver unit 10D includes an electro-optical converter 11D and a photoelectric converter 12D. The electro-optical converter 11D is connected to the oscillating unit 20, which converts the voltage signal transmitted from the oscillating unit 20 into a light wave to be directed to the subject. This light wave is subject to the subject After being reflected back to the photoelectric converter, it is converted into a voltage signal by the photoelectric converter 12D, and sent to the oscillating unit 20 and the mixing unit 30. The details of the oscillating unit 20, the mixing unit 30, and the processing unit 40 can be as described above. Since the noise ratio (SNR) of the electro-optic converter and the photoelectric converter is better, the architecture of the 5D diagram is more helpful for observing the motion/disturbance of the subject.
以傳統連續波雷達而言，其根據接收訊號與發射訊號間之相位差來判斷待測物體之緩慢移動資訊(呼吸、心跳)。但受限於訊號產生器的相位雜訊，此技術在訊雜比與系統複雜度之間面臨取捨關係。傳統連續波雷達雖然在低操作頻率時，其靈敏度表現較佳，但在高頻底下，靈敏度的提昇有限，且易受到雜波效應影響。此外，由於環境中其他物體的回波影響，將使基頻訊號存在直流位移。因此雜波效應會使放大電路飽和而無法有效感測生理訊號。 In the case of a conventional continuous wave radar, it determines the slow moving information (breathing, heartbeat) of the object to be tested based on the phase difference between the received signal and the transmitted signal. However, limited by the phase noise of the signal generator, this technology faces a trade-off between the signal-to-noise ratio and the complexity of the system. Although the traditional CW radar has better sensitivity at low operating frequencies, the sensitivity is limited at high frequencies and is susceptible to clutter effects. In addition, due to the echo effects of other objects in the environment, there will be a DC shift in the fundamental frequency signal. Therefore, the clutter effect saturates the amplifying circuit and cannot effectively sense the physiological signal.
至於另一先前技術，雖然在高操作頻率時，靈敏度表現較佳(當操作頻率提昇兩倍時，感測距離可上升為4倍)，且不受被其他物體所回反射的雜波所影響。但其需要頻率解調器，而頻率解調器的射頻延遲單元難以整合至晶片中。 As for the other prior art, although the sensitivity is better at high operating frequencies (the sensing distance can be increased by a factor of four when the operating frequency is doubled), and is not affected by the clutter reflected back by other objects. . However, it requires a frequency demodulator, and the RF delay unit of the frequency demodulator is difficult to integrate into the wafer.
相反地，於本案上述實施例中，環境中之偵測電波傳輸路徑將產生額外傳輸延遲，以取代先前技術的射頻頻段之延遲單元。此外，本案上述實施例亦使用自我注入鎖定技術。故而，本案實施例結合此兩種機制，在不同操作頻率下皆可具有高靈敏度。當操作頻率較高時，會由自我注入鎖定架構所主宰；當操作 頻率較低時，則由傳統連續波架構進行相位解調。本案上述實施例原則上應可不受雜波效應的影響。由於本案上述實施例省略射頻延遲單元，故而，原則上應可提高體積化程度。 Conversely, in the above embodiment of the present invention, the detected radio wave transmission path in the environment will generate an additional transmission delay to replace the delay unit of the prior art radio frequency band. In addition, the above embodiment of the present invention also uses a self-injection locking technique. Therefore, the embodiment of the present invention combines these two mechanisms to have high sensitivity at different operating frequencies. When the operating frequency is high, it is dominated by the self-injection locking architecture; when operating At lower frequencies, phase demodulation is performed by a conventional continuous wave architecture. The above embodiments of the present invention should in principle be unaffected by clutter effects. Since the above embodiment omits the radio frequency delay unit in the present case, in principle, the degree of volume reduction should be increased.
上述可知，相較於傳統技術利用都卜勒雷達並配合基頻訊號處理技術，本案上述實施例之原則上應有優點譬如為：大幅減少電路元件使用、高度積體化、高度抗雜波能力、高靈敏度、降低製造成本及降低功率消耗等優點。 As can be seen from the above, compared with the conventional technology, the Doppler radar is combined with the fundamental frequency signal processing technology, and the above embodiments of the present invention should have advantages in principle, such as: greatly reducing the use of circuit components, highly integrated, and highly anti-clutter capability. High sensitivity, reduced manufacturing costs and reduced power consumption.
綜上所述，雖然本發明已以較佳實施例揭露如上，然其並非用以限定本發明。本發明所屬技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作各種之更動與潤飾。因此，本發明之保護範圍當視後附之申請專利範圍所界定者為準。 In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.
100‧‧‧動作/擾動偵測器 100‧‧‧Action/disturbance detector
10‧‧‧收發單元 10‧‧‧ transceiver unit
20‧‧‧振盪單元 20‧‧‧Oscillation unit
30‧‧‧混頻單元 30‧‧‧mixing unit
Claims (20)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102109406A TWI556797B (en) | 2013-03-18 | 2013-03-18 | Motion/interference sensor |
| CN201310118801.3A CN104055519B (en) | 2013-03-18 | 2013-04-08 | Motion/Disturbance Detector |
| US14/151,930 US9375153B2 (en) | 2010-05-17 | 2014-01-10 | Motion/vibration sensor |
| US14/154,252 US9603555B2 (en) | 2010-05-17 | 2014-01-14 | Motion/vibration detection system and method with self-injection locking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102109406A TWI556797B (en) | 2013-03-18 | 2013-03-18 | Motion/interference sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201436766A TW201436766A (en) | 2014-10-01 |
| TWI556797B true TWI556797B (en) | 2016-11-11 |
Family
ID=51543653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW102109406A TWI556797B (en) | 2010-05-17 | 2013-03-18 | Motion/interference sensor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104055519B (en) |
| TW (1) | TWI556797B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI642406B (en) * | 2017-12-12 | 2018-12-01 | Sil Radar Technology Inc. | Non-contact self-injection-locked sensor |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104778944A (en) * | 2014-01-13 | 2015-07-15 | 南京理工大学 | Non-contact type voice perception synthesis device |
| TWI514193B (en) * | 2014-12-25 | 2015-12-21 | Univ Nat Sun Yat Sen | Motion detection apparatus |
| US9891313B2 (en) | 2015-05-08 | 2018-02-13 | Htc Corporation | Radar device and security monitoring system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6756936B1 (en) * | 2003-02-05 | 2004-06-29 | Honeywell International Inc. | Microwave planar motion sensor |
| US20050285790A1 (en) * | 2004-06-10 | 2005-12-29 | Andre Gagnon | Apparatus and method for tracing a path travelled by an entity or object, and tag for use therewith |
| US20100151799A1 (en) * | 2008-12-16 | 2010-06-17 | Electronics And Telecommunications Research Institute | Transceiver using millimeter-wave |
| CN102247146A (en) * | 2010-05-18 | 2011-11-23 | 财团法人工业技术研究院 | Wireless sensing device and method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4951060A (en) * | 1988-09-21 | 1990-08-21 | Westinghouse Electric Corp. | Dual frequency transmit-receive module for an active aperture radar system |
| EP2020919B1 (en) * | 2006-06-01 | 2019-07-31 | ResMed Sensor Technologies Limited | Apparatus, system, and method for monitoring physiological signs |
| US8092389B2 (en) * | 2008-04-17 | 2012-01-10 | Pacesetter, Inc. | Enhanced intraluminal flow measurement system using reference and combined signals |
| CN102499686B (en) * | 2011-10-31 | 2013-07-03 | 中国人民解放军第四军医大学 | Wireless monitoring device for infant apnea |
-
2013
- 2013-03-18 TW TW102109406A patent/TWI556797B/en active
- 2013-04-08 CN CN201310118801.3A patent/CN104055519B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6756936B1 (en) * | 2003-02-05 | 2004-06-29 | Honeywell International Inc. | Microwave planar motion sensor |
| US20050285790A1 (en) * | 2004-06-10 | 2005-12-29 | Andre Gagnon | Apparatus and method for tracing a path travelled by an entity or object, and tag for use therewith |
| US20100151799A1 (en) * | 2008-12-16 | 2010-06-17 | Electronics And Telecommunications Research Institute | Transceiver using millimeter-wave |
| CN102247146A (en) * | 2010-05-18 | 2011-11-23 | 财团法人工业技术研究院 | Wireless sensing device and method |
Non-Patent Citations (1)
| Title |
|---|
| Fu-Kang Wang; Chien-Jung Li ; Chieh-Hsun Hsiao ; Tzyy-Sheng Horng ;Jenshan Lin ;Kang-Chun Peng ;Je-Kuan Jau ;Jian-Yu Li; Cheng-Chung Chen,"A Novel Vital-Sign Sensor Based on a Self-Injection-Locked Oscillator", Microwave Theory and Techniques, IEEE Transactions ,Volume:58 , Issue: 12, Dec. 2010,pages 4112-4120. * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI642406B (en) * | 2017-12-12 | 2018-12-01 | Sil Radar Technology Inc. | Non-contact self-injection-locked sensor |
| US10959679B2 (en) | 2017-12-12 | 2021-03-30 | Sil Radar Technology Inc. | Noncontact self-injection-locked sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104055519A (en) | 2014-09-24 |
| TW201436766A (en) | 2014-10-01 |
| CN104055519B (en) | 2016-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kebe et al. | Human vital signs detection methods and potential using radars: A review | |
| US9375153B2 (en) | Motion/vibration sensor | |
| Nosrati et al. | High-accuracy heart rate variability monitoring using Doppler radar based on Gaussian pulse train modeling and FTPR algorithm | |
| Vinci et al. | Six-port radar sensor for remote respiration rate and heartbeat vital-sign monitoring | |
| Droitcour et al. | Signal-to-noise ratio in Doppler radar system for heart and respiratory rate measurements | |
| TWI493213B (en) | Motion/interference signal detection system and method thereof | |
| Tu et al. | Fast acquisition of heart rate in noncontact vital sign radar measurement using time-window-variation technique | |
| Li et al. | A review on recent advances in Doppler radar sensors for noncontact healthcare monitoring | |
| Mercuri et al. | Frequency-tracking CW Doppler radar solving small-angle approximation and null point issues in non-contact vital signs monitoring | |
| Xiao et al. | Frequency-tuning technique for remote detection of heartbeat and respiration using low-power double-sideband transmission in the Ka-band | |
| US7903020B2 (en) | System and methods for remote sensing using double-sideband signals | |
| Mishra et al. | Intermodulation-based nonlinear smart health sensing of human vital signs and location | |
| TWI642406B (en) | Non-contact self-injection-locked sensor | |
| US8698636B2 (en) | Wireless detection apparatus and method | |
| WO2015174879A1 (en) | Mm-wave radar vital signs detection apparatus and method of operation | |
| Kim et al. | Heart rate detection during sleep using a flexible RF resonator and injection-locked PLL sensor | |
| CN103919527B (en) | Motion/disturbance signal detection system and method | |
| TWI556797B (en) | Motion/interference sensor | |
| Lie et al. | A 2.4 GHz non-contact biosensor system for continuous monitoring of vital-signs | |
| Pramudita et al. | Low-power radar system for noncontact human respiration sensor | |
| Das et al. | Antenna evaluation of a non-contact vital signs sensor for continuous heart and respiration rate monitoring | |
| Seflek et al. | Small motion detection and non-contact vital signs monitoring with continuous wave doppler radars | |
| TWI495451B (en) | Non-contact vital sign sensing system and sensing method using the same | |
| Michler et al. | A radar-based vital sign sensing system for in-bed monitoring in clinical applications | |
| Wen et al. | PhysioChair: A dual-frequency radar system for noninvasive and continuous detection of physiological signatures |