TWI690297B - Vital-sign detecting system and method - Google Patents

Abstract

A vital-sign detecting system includes radio-frequency (RF) tags disposed on detected subjects respectively, the RF tags respectively generating incident RF signals with different predetermined frequencies, and the incident RF signal projecting on a corresponding detected subject to generate a corresponding reflected RF signal; and at least one RF radar that demodulates the reflected RF signal to obtain vital sign of the corresponding detected subject, and identifies the detected subject according to associated frequency of the reflected RF signal.

Description

Translated fromChinese

生理資訊偵測系統與方法Physiological information detection system and method

本發明係有關生理資訊偵測，特別是關於一種可識別受測者身分的生理資訊偵測系統與方法。The present invention relates to physiological information detection, in particular to a physiological information detection system and method that can identify the identity of a subject.

體溫(body temperature,BT)、血壓(blood pressure,BP)、心跳速率(heart rate,HR)及呼吸速率(respiratory rate,RR)是四個主要的生理資訊(vital signs)。生理資訊的偵測或量測可用以評估身體的健康狀況，且能提供疾病的線索。Body temperature (BT), blood pressure (BP), heart rate (HR) and respiratory rate (RR) are the four main vital signs. The detection or measurement of physiological information can be used to assess the health of the body and can provide clues to the disease.

傳統的非接觸式生理資訊偵測系統可用以遙測受測者的生理資訊，例如心跳速率或呼吸速率。由於偵測系統的造價不低，因此一個偵測系統通常會用來量測多個受測者。然而，多個受測者的相應訊號彼此會產生干擾，因而降低量測的準確度。再者，當多個受測者彼此靠近時，偵測系統很難識別出個別受測者，往往造成識別錯誤。The traditional non-contact physiological information detection system can be used to remotely measure the physiological information of the subject, such as heart rate or respiration rate. Because the cost of the detection system is not low, a detection system is usually used to measure multiple subjects. However, the corresponding signals of multiple subjects will interfere with each other, thereby reducing the accuracy of the measurement. Furthermore, when multiple subjects are close to each other, it is difficult for the detection system to identify individual subjects, often resulting in recognition errors.

因此亟需提出一種可識別受測者身分的生理資訊偵測機制，用以改善傳統生理資訊偵測系統的缺失。Therefore, there is an urgent need to propose a physiological information detection mechanism that can identify the subject's identity to improve the lack of traditional physiological information detection systems.

鑑於上述，本發明實施例的目的之一在於提出一種生理資訊偵測系統與方法，其可識別受測者的身分，且能提升偵測準確度。In view of the above, one of the objectives of the embodiments of the present invention is to propose a physiological information detection system and method, which can identify the identity of the subject and can improve the detection accuracy.

根據本發明實施例，生理資訊偵測系統包含複數射頻標籤及至少一射頻雷達。射頻標籤分別設於受測者，且產生相異的預設頻率的入射射頻訊號，其投射至相應受測者以產生相應反射射頻訊號。射頻雷達解調反射射頻訊號以得到相應受測者的生理資訊，且根據反射射頻訊號的相應頻率以識別受測者。According to an embodiment of the present invention, the physiological information detection system includes a plurality of radio frequency tags and at least one radio frequency radar. The radio frequency tags are respectively provided to the subject and generate incident radio frequency signals of different preset frequencies, which are projected to the corresponding subject to generate corresponding reflected radio frequency signals. RF radar demodulate reflected RFTo obtain the physiological information of the corresponding subject, and identify the subject according to the corresponding frequency of the reflected radio frequency signal.

100:生理資訊偵測系統100: physiological information detection system

100B:生理資訊偵測系統100B: Physiological information detection system

100C:生理資訊偵測系統100C: physiological information detection system

100D:生理資訊偵測系統100D: physiological information detection system

700:生理資訊偵測系統700: physiological information detection system

700B:生理資訊偵測系統700B: Physiological information detection system

700C:生理資訊偵測系統700C: physiological information detection system

11:射頻雷達11: RF radar

11A:射頻雷達11A: RF radar

11B:射頻雷達11B: RF radar

111:發射天線111: transmitting antenna

112:接收天線112: receiving antenna

113:可調頻率發射器113: Adjustable frequency transmitter

114:諧波接收器114: Harmonic receiver

114B:雙頻帶接收器114B: Dual-band receiver

114C:可調頻率接收器114C: Adjustable frequency receiver

115:諧波解調器115: Harmonic demodulator

115B:解調器115B: Demodulator

115C:可調頻率解調器115C: Adjustable frequency demodulator

116:處理器116: processor

117:控制器117: Controller

12、12A、12B:諧波射頻標籤/射頻標籤12, 12A, 12B: Harmonic RF tags/RF tags

121:諧波發射天線單元121: Harmonic emission antenna unit

122:射頻發射器122: RF transmitter

13:受測者13: Subject

300:生理資訊偵測方法300: Physiological information detection method

31:發射預設頻率的射頻訊號31: Transmit RF signal of preset frequency

32:標籤產生相應的入射諧波訊號32: The tag generates the corresponding incident harmonic signal

33:產生反射諧波訊號33: Generate reflected harmonic signals

34:接收、解調並處理反射諧波訊號以得到生理資訊34: Receive, demodulate and process reflected harmonic signals to obtain physiological information

35:整合生理資訊與相應的標籤及受測者35: Integrate physiological information with corresponding tags and subjects

36:判斷是否有其他受測者36: Determine whether there are other subjects

37:選擇下一身分的共振頻率37: Select the resonance frequency of the next identity

800:生理資訊偵測方法800: Physiological information detection method

71:發射預設頻率的入射射頻訊號71: Transmit incident RF signal of preset frequency

72:射頻雷達選擇標籤的頻率72: RF radar selects the frequency of the tag

73:接收反射射頻訊號73: Receive reflected RF signal

74:解調反射射頻訊號以得到基頻訊號74: Demodulate the reflected RF signal to obtain the fundamental frequency signal

75:處理基頻訊號以得到生理資訊75: Processing the fundamental frequency signal to obtain physiological information

76:整合生理資訊與相應的標籤及受測者76: Integrate physiological information with corresponding labels and subjects

77:判斷是否有其他受測者77: determine whether there are other subjects

78:選擇下一身分的頻率78: choose the frequency of the next identity

F1、F2、Fn、Fx:射頻訊號F1, F2, Fn, Fx: RF signal

FH1、FH2、FHn、FHx:入射諧波訊號/入射射頻訊號FH1, FH2, FHn, FHx: incident harmonic signal/incident RF signal

FN1、FN2、FNn、FNx:反射諧波訊號/反射射頻訊號FN1, FN2, FNn, FNx: reflected harmonic signal/reflected RF signal

FR1:反射射頻訊號FR1: reflected RF signal

T1、T2、Tn:時間T1, T2, Tn: time

第一圖顯示本發明第一實施例之生理資訊偵測系統的方塊圖。The first figure shows a block diagram of the physiological information detection system of the first embodiment of the present invention.

第二圖顯示第一圖之偵測系統的細部方塊圖。The second figure shows a detailed block diagram of the detection system of the first figure.

第三A圖顯示本發明第一實施例之生理資訊偵測方法的流程圖。FIG. 3A shows a flowchart of the physiological information detection method of the first embodiment of the present invention.

第三B圖顯示相應於第三A圖之偵測系統的方塊圖。The third diagram B shows a block diagram of the detection system corresponding to the third diagram A.

第四圖顯示本發明第一實施例第一變化型之偵測系統的方塊圖。The fourth figure shows a block diagram of a first variant detection system of the first embodiment of the invention.

第五圖顯示本發明第一實施例第二變化型之偵測系統的方塊圖。The fifth figure shows a block diagram of a second variant detection system of the first embodiment of the invention.

第六圖顯示本發明第一實施例第三變化型之偵測系統的方塊圖。The sixth figure shows a block diagram of a third variant detection system of the first embodiment of the invention.

第七圖顯示本發明第二實施例之生理資訊偵測系統的方塊圖。The seventh figure shows a block diagram of a physiological information detection system according to a second embodiment of the invention.

第八A圖顯示本發明第二實施例之生理資訊偵測方法的流程圖。Figure 8A shows a flowchart of a physiological information detection method according to a second embodiment of the invention.

第八B圖顯示相應於第八A圖之偵測系統的方塊圖。Figure 8B shows a block diagram of the detection system corresponding to Figure 8A.

第九圖顯示本發明第二實施例第一變化型之偵測系統的方塊圖。The ninth figure shows a block diagram of a first variant detection system of the second embodiment of the invention.

第十圖顯示本發明第二實施例第二變化型之偵測系統的方塊圖。The tenth figure shows a block diagram of a second variant detection system of the second embodiment of the invention.

第一圖顯示本發明第一實施例之生理資訊(vital sign)偵測系統100(以下簡稱偵測系統)的方塊圖。在本實施例中，偵測系統100可包含射頻(RF)雷達11，其可藉由發射天線111發射複數預設頻率的射頻訊號。偵測系統100可包含複數諧波射頻標籤(harmonic RF tag)12(以下簡稱標籤)，分別設於受測者13身上(例如配戴於受測者13胸前)，分別根據(相異)預設頻率的射頻訊號以產生相應的入射諧波(射頻)訊號。舉例而言，當標籤1(12)接收發射天線111所發射的射頻訊號F1，可產生相應的入射諧波訊號FH1，例如二次諧波訊號(其中FH1的頻率為F1的二倍)。入射諧波訊號FH1投射至受測者13可產生反射諧波(射頻)訊號FN1，藉由接收天線112而被射頻雷達11接收。受測者13身體之移動(motion)會調變入射諧波訊號以改變其相位，因此射頻雷達11可藉由解調反射諧波訊號以得知受測者13的生理資訊，例如呼吸或心跳速率。由於每一個標籤12所感應之射頻訊號的頻率不同，產生之入射諧波訊號的頻率也不相同，因此射頻雷達11可識別所接收之反射諧波訊號相應的受測者13。The first figure shows a block diagram of a physiological sign (vital sign) detection system 100 (hereinafter referred to as a detection system) according to the first embodiment of the present invention. In this embodiment, thedetection system 100 may include a radio frequency (RF)radar 11, which may transmit a plurality of radio frequency signals of a predetermined frequency through the transmittingantenna 111. Thedetection system 100 may include a harmonic RF tag (harmonic RF tag) 12 (hereinafter referred to as a tag), which is respectively provided on the subject 13 (for example, worn on the chest of the subject 13) according to (different) A radio frequency signal of a preset frequency is used to generate a corresponding incident harmonic (radio frequency) signal. For example, when the tag 1 (12) receives the radio frequency signal F1 transmitted by the transmittingantenna 111, it can generate a corresponding incident harmonic signal FH1, such as a second harmonic signal (wherein the frequency of FH1 is F1Twice). The incident harmonic signal FH1 is projected to the subject 13 to generate a reflected harmonic (RF) signal FN1, which is received by theRF radar 11 through the receivingantenna 112. The motion of the body of the subject 13 will modulate the incident harmonic signal to change its phase, so theRF radar 11 can learn the physiological information of the subject 13, such as breathing or heartbeat, by demodulating the reflected harmonic signal rate. Since the frequency of the RF signal induced by eachtag 12 is different and the frequency of the incident harmonic signal generated is also different, theRF radar 11 can identify the subject 13 corresponding to the received reflected harmonic signal.

第二圖顯示第一圖之偵測系統100的細部方塊圖，僅顯示其中一個受測者13及相應標籤12。在本實施例中，射頻雷達11可包含可調頻率發射器113，於預設頻率範圍內產生複數預設頻率其中之一的射頻訊號Fx，例如藉由改變震盪電路的電感值或/且電容值。所產生的射頻訊號Fx可藉由發射天線111發射至標籤12。The second diagram shows a detailed block diagram of thedetection system 100 of the first diagram, showing only one of thesubjects 13 and thecorresponding label 12. In this embodiment, theRF radar 11 may include anadjustable frequency transmitter 113 to generate an RF signal Fx of one of a plurality of preset frequencies within a preset frequency range, for example, by changing the inductance value and/or capacitance of the oscillation circuit value. The generated radio frequency signal Fx can be transmitted to thetag 12 through the transmittingantenna 111.

本實施例之標籤12可包含諧波發射天線單元121，當其共振頻率同於(發射天線111的)射頻訊號Fx的頻率時會產生共振反應，以產生相應的入射諧波訊號FHx，例如二次諧波訊號。Thetag 12 of this embodiment may include a harmonictransmission antenna unit 121, which generates a resonance reaction when the resonance frequency is the same as the frequency of the radio frequency signal Fx (of the transmission antenna 111) to generate a corresponding incident harmonic signal FHx, for example, two Subharmonic signal.

本實施例之射頻雷達11可包含諧波接收器114，其藉由接收天線112以接收反射諧波訊號FNx，其頻率相同於入射諧波訊號FHx，但相位會受到受測者13身體之移動所調變。Theradio frequency radar 11 of this embodiment may include aharmonic receiver 114, which receives the reflected harmonic signal FNx through the receivingantenna 112, and has the same frequency as the incident harmonic signal FHx, but the phase is subject to the movement of the body of the subject 13 Modified by.

本實施例之射頻雷達11可包含諧波解調器115，其對(諧波接收器114)所接收之反射諧波訊號FNx進行解調，以得到包含相位變化資訊之基頻(Baseband)訊號。射頻雷達11可包含處理器116，處理器116可包含一類比數位轉換器和一數位訊號處理器。處理器116對(諧波解調器115所輸出的)基頻訊號進行類比至數位轉換，並去除高頻成分，經運算後可得到受測者13的生理資訊，例如呼吸或心跳速率。前述去除高頻成分之操作係由該數位訊號處理器執行，其可包含去除不合適之呼吸諧波、去除雜訊等，但不限定於此。本實施例之射頻雷達11可包含控制器117，用以控制可調頻率發射器113、諧波接收器114、諧波解調器115及處理器116的操作。在本實施例中，如第二圖所示，可調頻率發射器113連接至發射天線111以發射射頻訊號Fx，諧波接收器114連接至接收天線112以接收反射諧波訊號FNx，諧波解調器115連接至諧波接收器114以解調反射諧波訊號FNx，處理器116連接至諧波解調器115以處理基頻訊號。Theradio frequency radar 11 of this embodiment may include aharmonic demodulator 115 that demodulates the reflected harmonic signal FNx received by the (harmonic receiver 114) to obtain a baseband signal including phase change information . Theradio frequency radar 11 may include aprocessor 116, and theprocessor 116 may include an analog-to-digital converter and a digital signal processor. Theprocessor 116 performs analog-to-digital conversion on the fundamental frequency signal (output from the harmonic demodulator 115) and removes high-frequency components, and after the operation, the physiological information of the subject 13 such as breathing or heart rate can be obtained. The aforementioned operation of removing high frequency components is performed by the digital signal processor, which may include removing inappropriate respiratory harmonics, removing noise, etc., but is not limited thereto. Theradio frequency radar 11 of this embodiment may include acontroller 117 for controlling the operations of theadjustable frequency transmitter 113, theharmonic receiver 114, theharmonic demodulator 115, and theprocessor 116. In this embodiment, as shown in the second figure, theadjustable frequency transmitter113 is connected to the transmittingantenna 111 to transmit the radio frequency signal Fx, theharmonic receiver 114 is connected to the receivingantenna 112 to receive the reflected harmonic signal FNx, and theharmonic demodulator 115 is connected to theharmonic receiver 114 to demodulate the reflected harmonic signal FNx, theprocessor 116 is connected to theharmonic demodulator 115 to process the fundamental frequency signal.

第三A圖顯示本發明第一實施例之生理資訊偵測方法300(以下簡稱偵測方法)的流程圖，第三B圖顯示相應於第三A圖之偵測系統100的方塊圖。於步驟31，於時間T1，射頻雷達11的可調頻率發射器113藉由發射天線111發射預設頻率的射頻訊號F1至標籤12。標籤1(12)的諧波發射天線單元121會與射頻訊號F1產生共振反應，以產生相應的入射諧波訊號FH1至相應受測者13(步驟32)。值得注意的是，其他標籤(12)的諧波發射天線單元121並不會與射頻訊號F1產生共振反應，也不會產生相應的入射諧波訊號FHx至其相應受測者13。The third diagram A shows a flowchart of the physiological information detection method 300 (hereinafter referred to as the detection method) of the first embodiment of the present invention, and the third diagram B shows a block diagram of thedetection system 100 corresponding to the third diagram A. Instep 31, at time T1, theadjustable frequency transmitter 113 of theradio frequency radar 11 transmits the radio frequency signal F1 of the preset frequency to thetag 12 through the transmittingantenna 111. The harmonictransmitting antenna unit 121 of the tag 1 (12) will resonate with the radio frequency signal F1 to generate the corresponding incident harmonic signal FH1 to the corresponding subject 13 (step 32). It is worth noting that the harmonictransmitting antenna unit 121 of other tags (12) will not resonate with the radio frequency signal F1, nor will it generate the corresponding incident harmonic signal FHx to itscorresponding subject 13.

於步驟33，受測者13身體之移動會調變入射諧波訊號FH1以改變其相位，因而產生反射諧波訊號FN1。於步驟34，射頻雷達11的諧波接收器114接收反射諧波訊號FN1；接著，射頻雷達11的諧波解調器115對反射諧波訊號FN1進行解調，以得到包含相位變化資訊之基頻訊號；再由射頻雷達11的處理器116對包含相位變化資訊之基頻訊號進行類比至數位轉換，並去除高頻成分，經運算處理後得到受測者13的生理資訊，例如呼吸或心跳速率。Instep 33, the movement of the body of the subject 13 will modulate the incident harmonic signal FH1 to change its phase, thus generating the reflected harmonic signal FN1. Instep 34, theharmonic receiver 114 of theradio frequency radar 11 receives the reflected harmonic signal FN1; then, theharmonic demodulator 115 of theradio frequency radar 11 demodulates the reflected harmonic signal FN1 to obtain a base containing phase change information Frequency signal; then theprocessor 116 of theRF radar 11 performs analog to digital conversion on the fundamental frequency signal containing the phase change information, and removes high frequency components, and after the arithmetic processing, the physiological information of the subject 13 is obtained, such as breathing or heartbeat rate.

最後，於步驟35，整合所得到的生理資訊與相應的標籤12及受測者13，其中相應(標籤12的)諧波發射天線單元121與射頻訊號F1具有相同的共振頻率，可作為身分(ID)的識別。Finally, instep 35, the obtained physiological information is integrated with thecorresponding tag 12 and the subject 13, wherein the corresponding harmonic antenna element 121 (of the tag 12) and the radio frequency signal F1 have the same resonance frequency and can be used as an identity ( ID).

接著，如果射頻雷達11仍有其他受測者13待偵測(步驟36)，則射頻雷達11選擇下一身分的共振頻率(步驟37)，接著於時間T2重複執行步驟31~35。亦即，發射預設頻率的射頻訊號F2至標籤12(步驟31)，產生相應的入射諧波訊號FH2至相應受測者13(步驟32)，產生反射諧波訊號FN2(步驟33)，得到受測者13的生理資訊(步驟34)，及整合所得到的生理資訊與相應的標籤12及受測者13(步驟35)。如果步驟36判定射頻雷達11未有其他受測者13待偵測，則結束偵測方法300的流程。Next, if theRF radar 11 still hasother subjects 13 to be detected (step 36), theRF radar 11 selects the resonance frequency of the next identity (step 37), and then repeatssteps 31 to 35 at time T2. That is, the radio frequency signal F2 of the preset frequency is transmitted to the tag 12 (step 31), the corresponding incident harmonic signal FH2 is generated to the corresponding subject 13 (step 32), and the reflected harmonic signal FN2 is generated (step 33) to obtain The physiological information of the subject 13 (step 34), and integrate the obtained physiological information with thecorresponding tag 12 and the subject 13 (step 35). If it is determined instep 36 that there is no other subject 13 to be detected by theRF radar 11, the process of thedetection method 300 ends.

第四圖顯示本發明第一實施例第一變化型之偵測系統100B的方塊圖。與第三B圖所示偵測系統100不同的地方在於，本實施例(第四圖)使用複數個(例如二個)射頻雷達11A、11B，分別相應於不同的標籤12與受測者13。藉此，該些射頻雷達11A、11B可同時進行不同身分的識別，然而第一實施例(第三B圖)於某一時間僅能進行單一身分的識別。The fourth figure shows a block diagram of a first modifieddetection system 100B according to the first embodiment of the present invention. The difference from thedetection system 100 shown in the third image B is that this embodiment (the fourth image) uses a plurality of (for example, two)radio frequency radars 11A, 11B, respectively corresponding todifferent tags 12 and the subject 13 . In this way, theradio frequency radars 11A and 11B can simultaneously recognize different identities. However, the first embodiment (Figure 3B) can only recognize a single identity at a time.

第五圖顯示本發明第一實施例第二變化型之偵測系統100C的方塊圖。與第三B圖所示偵測系統100不同的地方在於，本實施例(第五圖)使用複數個(例如二個)標籤12A、12B設於單一受測者13，該些標籤12A、12B具有不同的共振頻率。藉此，射頻雷達11可偵測單一受測者13的複數生理資訊。The fifth figure shows a block diagram of a second modifieddetection system 100C according to the first embodiment of the present invention. The difference from thedetection system 100 shown in FIG. 3B is that in this embodiment (fifth figure), a plurality of (for example, two)tags 12A, 12B are provided on asingle subject 13 and thetags 12A, 12B With different resonance frequencies. In this way, theradio frequency radar 11 can detect the complex physiological information of asingle subject 13.

第六圖顯示本發明第一實施例第三變化型之偵測系統100D的方塊圖。與第二圖所示偵測系統100不同的地方在於，本實施例(第六圖)之射頻雷達11使用雙頻帶(dual band)接收器114B以取代諧波接收器114，其中的一個頻帶相同於第二圖，係用以接收反射諧波訊號FN1。此外，另一頻帶則用以接收射頻訊號F1發射至受測者13(但未經標籤12)並反射回來的反射射頻訊號FR1，再由解調器115B進行解調。藉此，射頻雷達11可於同一時間週期內，藉由分時多工以偵測單一受測者13的複數生理資訊。The sixth figure shows a block diagram of a third modifieddetection system 100D according to the first embodiment of the present invention. The difference from thedetection system 100 shown in the second figure is that theradio frequency radar 11 of this embodiment (the sixth figure) uses adual band receiver 114B instead of theharmonic receiver 114, and one of the frequency bands is the same In the second diagram, it is used to receive the reflected harmonic signal FN1. In addition, another frequency band is used to receive the reflected RF signal FR1 that is transmitted by the RF signal F1 to the subject 13 (but not the tag 12) and reflected back, and then demodulated by thedemodulator 115B. In this way, theradio frequency radar 11 can detect the complex physiological information of asingle subject 13 by time division multiplexing in the same time period.

第七圖顯示本發明第二實施例之生理資訊偵測系統700(以下簡稱偵測系統)的方塊圖。第二實施例類似於第一實施例，相異處則說明如下。The seventh figure shows a block diagram of a physiological information detection system 700 (hereinafter referred to as a detection system) according to a second embodiment of the invention. The second embodiment is similar to the first embodiment, and the differences are described below.

在本實施例中，射頻標籤12(以下簡稱標籤)可包含射頻發射器122，其可發射預設頻率的入射射頻訊號FHx，其中，不同的標籤12會發射不同頻率的入射射頻訊號FHx。入射射頻訊號FHx投射至受測者13可產生反射射頻訊號FNx，藉由接收天線112而被射頻雷達11接收。受測者13身體之移動會調變入射射頻訊號FHx以改變其相位，並反射為反射射頻信號FNx。因此射頻雷達11可藉由解調反射射頻訊號FNx以得知受測者13的生理資訊，例如呼吸或心跳速率。In this embodiment, the radio frequency tag 12 (hereinafter referred to as a tag) may include aradio frequency transmitter 122, which may emit an incident radio frequency signal FHx of a preset frequency, whereindifferent tags 12 will emit an incident radio frequency signal FHx of different frequencies. The incident radio frequency signal FHx is projected onto the subject 13 to generate a reflected radio frequency signal FNx, which is received by theradio frequency radar 11 through the receivingantenna 112. The movement of the body of the subject 13 will modulate the incident RF signal FHx to change its phase and reflect it as a reflected RF signal FNx. Therefore, theradio frequency radar 11 can obtain the physiological information of the subject 13 by demodulating the reflected radio frequency signal FNx, such as respiration or heart rate.

本實施例之射頻雷達11可包含可調頻率接收器114C(以取代第一實施例之諧波接收器114)，於預設頻率範圍內接收複數反射射頻訊號FNx。本實施例之射頻雷達11不需(第一實施例的)可調頻率發射器113及發射天線111。本實施例之射頻雷達11可包含可調頻率解調器115C，於預設頻率範圍內可對所接收的反射射頻訊號FNx進行解調。Theradio frequency radar 11 of this embodiment may include anadjustable frequency receiver 114C (instead of theharmonic receiver 114 of the first embodiment) to receive the complex reflected radio frequency signal FNx within a preset frequency range. TrueTheradio frequency radar 11 of the embodiment does not require theadjustable frequency transmitter 113 and the transmitting antenna 111 (of the first embodiment). Theradio frequency radar 11 of this embodiment may include anadjustable frequency demodulator 115C, which can demodulate the received reflected radio frequency signal FNx within a preset frequency range.

第八A圖顯示本發明第二實施例之生理資訊偵測方法800(以下簡稱偵測方法)的流程圖，第八B圖顯示相應於第八A圖之偵測系統700的方塊圖。於步驟71，該些標籤12分別發射(相異的)預設頻率的入射射頻訊號FHx(x為1至n)至相應受測者13。於步驟72，射頻雷達11選擇其中一標籤12的頻率。受測者13身體之移動會調變入射射頻訊號FHx以改變其相位，因而產生反射射頻訊號FNx(x為1至n)。Figure 8A shows a flowchart of a physiological information detection method 800 (hereinafter referred to as a detection method) according to a second embodiment of the present invention, and Figure 8B shows a block diagram of adetection system 700 corresponding to Figure 8A. Instep 71, thetags 12 respectively transmit (different) incident radio frequency signals FHx (x is 1 to n) of a predetermined frequency to thecorresponding subject 13. Instep 72, theradio frequency radar 11 selects the frequency of one of thetags 12. The movement of the body of the subject 13 will modulate the incident radio frequency signal FHx to change its phase, thus generating a reflected radio frequency signal FNx (x is 1 to n).

於步驟73，射頻雷達n的可調頻率接收器114C接收反射射頻訊號FNx。接著，於步驟74，射頻雷達11的可調頻率解調器115C對反射射頻訊號FNx進行解調，以得到包含相位變化資訊之基頻訊號。於步驟75，射頻雷達11的處理器116對基頻訊號進行類比至數位轉換，並去除高頻成分，經運算處理後得到受測者13的生理資訊，例如呼吸或心跳速率。Instep 73, theadjustable frequency receiver 114C of the radio frequency radar n receives the reflected radio frequency signal FNx. Next, instep 74, theadjustable frequency demodulator 115C of theradio frequency radar 11 demodulates the reflected radio frequency signal FNx to obtain a fundamental frequency signal including phase change information. Instep 75, theprocessor 116 of theradio frequency radar 11 performs analog-to-digital conversion on the fundamental frequency signal, and removes high-frequency components, and obtains the physiological information of the subject 13, such as breathing or heart rate, after the arithmetic processing.

最後，於步驟76，整合所得到的生理資訊與相應的標籤12及受測者13，其中相應(標籤12的)射頻發射器122與(射頻雷達11的)可調頻率接收器114C具有相同的頻率，可作為身分(ID)的識別。Finally, instep 76, the obtained physiological information is integrated with thecorresponding tag 12 and the subject 13, wherein the corresponding RF transmitter 122 (of the tag 12) and theadjustable frequency receiver 114C (of the RF radar 11) have the same Frequency can be used as an identification (ID).

接著，如果射頻雷達11仍有其他受測者13待偵測(步驟77)，則射頻雷達11(的可調頻率接收器114C)選擇下一身分的頻率(步驟78)，接著重複執行步驟71~76。如果步驟77判定射頻雷達11未有其他受測者13待偵測，則結束偵測方法800的流程。Then, if theRF radar 11 still hasother subjects 13 to be detected (step 77), the RF radar 11 (theadjustable frequency receiver 114C) selects the frequency of the next identity (step 78), and then repeatsstep 71 ~76. If it is determined instep 77 that there is no other subject 13 to be detected by theRF radar 11, the flow of thedetection method 800 is ended.

第九圖顯示本發明第二實施例第一變化型之偵測系統700B的方塊圖。與第八B圖所示偵測系統700不同的地方在於，本實施例(第九圖)使用複數個(例如二個)射頻雷達11A、11B，分別相應於不同的標籤12與受測者13。藉此，該些射頻雷達11A、11B可同時進行不同身分的識別，然而第二實施例(第八B圖)於某一時間僅能進行單一身分的識別。The ninth figure shows a block diagram of a first modifieddetection system 700B of the second embodiment of the present invention. The difference from thedetection system 700 shown in the eighth figure B is that this embodiment (the ninth figure) uses a plurality of (for example, two)radio frequency radars 11A, 11B, respectively corresponding todifferent tags 12 and the subject 13 . In this way, theradio frequency radars 11A and 11B can simultaneously recognize different identities. However, the second embodiment (Figure 8B) can only recognize a single identity at a time.

第十圖顯示本發明第二實施例第二變化型之偵測系統700C的方塊圖。與第七圖所示偵測系統700不同的地方在於，本實施例(第十圖)使用複數個(例如二個)標籤12A、12B設於單一受測者13，該些標籤12A、12B具有不同的頻率。藉此，射頻雷達11可偵測單一受測者13的複數生理資訊。The tenth figure shows a block diagram of a second modifieddetection system 700C according to the second embodiment of the present invention. The difference from thedetection system 700 shown in the seventh figure is that in this embodiment (the tenth figure), a plurality of (for example, two)tags 12A, 12B are provided on asingle subject 13, and thetags 12A, 12B have Different frequencies. In this way, theradio frequency radar 11 can detect the complex physiological information of asingle subject 13.

以上所述僅為本發明之較佳實施例而已，並非用以限定本發明之申請專利範圍；凡其它未脫離發明所揭示之精神下所完成之等效改變或修飾，均應包含在下述之申請專利範圍內。The above are only the preferred embodiments of the present invention and are not intended to limit the scope of the patent application of the present invention; all other equivalent changes or modifications made without departing from the spirit of the invention should be included in the following Within the scope of patent application.

100:生理資訊偵測系統100: physiological information detection system

11:射頻雷達11: RF radar

111:發射天線111: transmitting antenna

112:接收天線112: receiving antenna

12:諧波射頻標籤12: Harmonic RF tags

13:受測者13: Subject

F1、F2、Fn:射頻訊號F1, F2, Fn: RF signal

FH1、FH2、FHn:入射諧波訊號FH1, FH2, FHn: incident harmonic signal

FN1、FN2、FNn:反射諧波訊號FN1, FN2, FNn: reflected harmonic signal

Claims (16)

Translated fromChinese

一種生理資訊偵測系統，包含：至少一射頻雷達，用以發射複數相異的預設頻率的射頻訊號；及複數諧波射頻標籤，分別設於受測者，該些諧波射頻標籤分別根據該些射頻訊號以產生相應的入射諧波訊號，其投射至相應受測者以產生相應反射諧波訊號；其中該射頻雷達解調該反射諧波訊號以得到相應受測者的生理資訊，且根據該反射諧波訊號的相應頻率以識別受測者。A physiological information detection system, comprising: at least one radio frequency radar for transmitting radio frequency signals with different preset frequencies; and complex harmonic radio frequency tags, which are respectively provided to the subject, and the harmonic radio frequency tags are respectively based on The RF signals generate corresponding incident harmonic signals, which are projected to the corresponding subjects to generate corresponding reflected harmonic signals; wherein the RF radar demodulates the reflected harmonic signals to obtain physiological information of the corresponding subjects, and According to the corresponding frequency of the reflected harmonic signal to identify the subject.根據申請專利範圍第1項所述之生理資訊偵測系統，其中該射頻雷達包含：一可調頻率發射器，於預設頻率範圍內產生該些預設頻率其中之一的該射頻訊號；一諧波接收器，用以接收該反射諧波訊號；及一諧波解調器，用以解調該反射諧波訊號以得到基頻訊號。The physiological information detection system according to item 1 of the patent application scope, wherein the radio frequency radar includes: an adjustable frequency transmitter that generates the radio frequency signal of one of the preset frequencies within a preset frequency range; A harmonic receiver is used to receive the reflected harmonic signal; and a harmonic demodulator is used to demodulate the reflected harmonic signal to obtain a fundamental frequency signal.根據申請專利範圍第2項所述之生理資訊偵測系統，其中該諧波接收器包含一雙頻帶接收器，其中的一個頻帶用以接收該反射諧波訊號，另一個頻帶用以接收該射頻訊號發射至受測者並直接反射回來的反射射頻訊號。The physiological information detection system according to item 2 of the patent application scope, wherein the harmonic receiver includes a dual-band receiver, one of which is used to receive the reflected harmonic signal and the other is used to receive the radio frequency The reflected RF signal that the signal is transmitted to the subject and reflected directly back.根據申請專利範圍第2項所述之生理資訊偵測系統，其中該射頻雷達更包含：一處理器，其對該基頻訊號進行類比至數位轉換，並去除高頻成分，經運算以得到相應受測者的生理資訊。The physiological information detection system according to item 2 of the patent application scope, wherein the radio frequency radar further includes: a processor which performs analog to digital conversion on the fundamental frequency signal, and removes high frequency components, and obtains corresponding results through calculation Subject's physiological information.根據申請專利範圍第1項所述之生理資訊偵測系統，其中該諧波射頻標籤包含：一諧波發射天線單元，當其共振頻率同於該射頻訊號的頻率時，會產生共振反應，以產生相應的入射諧波訊號。According to the physiological information detection system described in item 1 of the patent application scope, wherein the harmonic radio frequency tag includes: a harmonic transmitting antenna unit, when the resonance frequency is the same as the frequency of the radio frequency signal, a resonance reaction occurs to Generate corresponding incident harmonic signals.根據申請專利範圍第1項所述之生理資訊偵測系統，其中該至少一射頻雷達包含複數射頻雷達，用以發射該些預設頻率的射頻訊號。According to the physiological information detection system described in item 1 of the patent application scope, wherein the at least one radio frequency radar includes a plurality of radio frequency radars for transmitting radio frequency signals of the predetermined frequencies.根據申請專利範圍第1項所述之生理資訊偵測系統，其中至少一受測者設有多個該諧波射頻標籤。According to the physiological information detection system described in item 1 of the patent application scope, at least one subject is provided with a plurality of the harmonic radio frequency tags.一種生理資訊偵測系統，包含：複數射頻標籤，分別設於受測者，該些射頻標籤產生相異的預設頻率的入射射頻訊號，其投射至相應受測者以產生相應反射射頻訊號；及至少一射頻雷達，用以解調該反射射頻訊號以得到相應受測者的生理資訊，且根據該反射射頻訊號的相應頻率以識別受測者。A physiological information detection system, comprising: a plurality of radio frequency tags, which are respectively set in a subject, the radio frequency tags generate incident radio frequency signals of different preset frequencies, which are projected to the corresponding subject to generate corresponding reflected radio frequency signals; And at least one radio frequency radar, used to demodulate the reflected radio frequency signal to obtain physiological information of the corresponding subject, and identify the subject according to the corresponding frequency of the reflected radio frequency signal.根據申請專利範圍第8項所述之生理資訊偵測系統，其中該射頻雷達包含：一可調頻率接收器，於預設頻率範圍內接收該些預設頻率其中之一的該反射射頻訊號；及一可調頻率解調器，用以解調該反射射頻訊號以得到基頻訊號。The physiological information detection system according to item 8 of the patent application scope, wherein the radio frequency radar includes: an adjustable frequency receiver that receives the reflected radio frequency signal of one of the preset frequencies within a preset frequency range; And an adjustable frequency demodulator for demodulating the reflected radio frequency signal to obtain the fundamental frequency signal.根據申請專利範圍第9項所述之生理資訊偵測系統，其中該射頻雷達更包含：一處理器，其對該基頻訊號進行類比至數位轉換，並去除高頻成分，經運算以得到相應受測者的生理資訊。According to the physiological information detection system described in item 9 of the patent application scope, the radio frequency radar further includes:A processor performs analog-to-digital conversion on the fundamental frequency signal, removes high-frequency components, and operates to obtain physiological information of the corresponding subject.根據申請專利範圍第8項所述之生理資訊偵測系統，其中該至少一射頻雷達包含複數射頻雷達，用以解調該些預設頻率的入射射頻訊號。The physiological information detection system according to item 8 of the patent application scope, wherein the at least one radio frequency radar includes a plurality of radio frequency radars for demodulating the incident radio frequency signals of the predetermined frequencies.根據申請專利範圍第8項所述之生理資訊偵測系統，其中至少一受測者設有多個該射頻標籤。According to the physiological information detection system described in item 8 of the patent application scope, at least one subject is provided with a plurality of the radio frequency tags.一種生理資訊偵測方法，包含：複數射頻標籤產生複數相異預設頻率的入射射頻訊號；投射該入射射頻訊號至相應受測者以產生相應反射射頻訊號；至少一射頻雷達解調該反射射頻訊號以得到相應受測者的生理資訊；及該至少一射頻雷達根據該反射射頻訊號的相應頻率以識別受測者。A physiological information detection method, comprising: a plurality of radio frequency tags generating a plurality of incident radio frequency signals of different preset frequencies; projecting the incident radio frequency signal to a corresponding subject to generate a corresponding reflected radio frequency signal; at least one radio frequency radar demodulating the reflected radio frequency The signal to obtain the physiological information of the corresponding subject; and the at least one radio frequency radar identifies the subject according to the corresponding frequency of the reflected radio frequency signal.根據申請專利範圍13項所述之生理資訊偵測方法，更包含：發射該些預設頻率的射頻訊號；其中該入射射頻訊號係為該射頻訊號經共振反應所產生的諧波訊號。The physiological information detection method according to item 13 of the patent application scope further includes: transmitting radio frequency signals of the preset frequencies; wherein the incident radio frequency signal is a harmonic signal generated by resonance reaction of the radio frequency signal.根據申請專利範圍13項所述之生理資訊偵測方法，其中該反射射頻訊號經解調得到基頻訊號。According to the physiological information detection method described in item 13 of the patent application range, the reflected radio frequency signal is demodulated to obtain a fundamental frequency signal.根據申請專利範圍15項所述之生理資訊偵測方法，更包含：對該基頻訊號進行類比至數位轉換，並去除高頻成分，經運算以得到相應受測者的生理資訊。According to the physiological information detection method described in item 15 of the patent application, it further includes: performing analog to digital conversion on the fundamental frequency signal, removing high-frequency components, and calculating to obtain physiological information of the corresponding subject.

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