CN103919527A - Motion/disturbance signal detection system and method - Google Patents
Motion/disturbance signal detection system and method Download PDFInfo
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Abstract
In one embodiment, an action/disturbance signal detection system includes: at least one transmitter and at least one receiver. The transmitter at least comprises a transceiving unit and a first oscillating unit. The receiver at least comprises a receiving unit and a demodulating unit. The transceiver unit is coupled or electrically connected to the signal output port of the first oscillating unit, receives the output signal of the first oscillating unit and emits a detection signal. The detection Signal (STX) is reflected by at least one object to be detected into a reflection detection Signal (SRX) which is received by the transceiver unit; the transceiver unit sends the reflection detection Signal (SRX) to the first oscillation unit to become an injection signal of the first oscillation unit, so that the first oscillation unit generates a self-injection locking phenomenon; the receiving unit is coupled or electrically connected to the demodulation unit for receiving the detection Signal (STX); the demodulation unit frequency-demodulates the detection Signal (STX) received by the receiving unit into a baseband output signal to obtain at least one motion/disturbance signal of the object under test.
Description
Technical field
The disclosure relates to a kind of action/disturbing signal detecting system and method.
Background technology
Under social trend's impact along with population aging, the development of Medicare service and raw doctor's electronics gets most of the attention.The far-end of combined with radio communication is taken care of (Remote Homecare) at home can allow patient must not go to hospital can carry out the sensing of physiological signal and record to save medical resource.
In physiological signal sensing, breath signal and heartbeat signal are extremely important, and it can be applicable to breathes disease (the Obstructive Sleep Apnea Syndrome that suffocates; OSAS) with the long-term tracking of heart beating rule or other physiological signals on.In addition, action/Disturbance Detection can be used for saving from damage supervision or personnel's identification on the scene.
There are at present contact physiological signal sensing device and contactless physiological signal sensing device.Contact physiological signal sensing device is measured by the mode of contact human body.
There is at present microwave type motion detector to utilize Doppler (Doppler) principle, relatively transmit and receive the phase contrast between signal.If phase contrast changes, represent and in environment, have disturbing source.
Summary of the invention
According to an example embodiment of the present disclosure, a kind of action/disturbing signal detecting system is proposed, comprising: at least one emitter, this emitter at least comprises Transmit-Receive Unit and the first oscillating unit; And at least one receptor, this receptor at least comprises receiving element and demodulating unit.This Transmit-Receive Unit couples or is electrically connected the signal output port of this first oscillating unit, receives the output signal of this first oscillating unit and launches detection signal; This detection signal (STX) is reflected at least one reflection detection signal (SRX) by least one tested object, is received by this Transmit-Receive Unit; This Transmit-Receive Unit is sent this reflection detection signal (SRX) into this first oscillating unit becomes the Injection Signal of this first oscillating unit, makes it produce self-injection locking phenomenon; This receiving element couples or is electrically connected this demodulating unit, receives this detection signal (STX); This detection signal (STX) that this demodulating unit receives receiving element carries out frequency demodulation, is demodulated to baseband output signal, to obtain at least one action/disturbing signal of aforementioned tested object.
According to an example embodiment of the present disclosure, a kind of action/disturbing signal detecting method is proposed, comprising: spontaneous emitter is launched detection signal, this detection signal is reflected at least one reflection detection signal by least one tested object; This at least one reflection detection signal of this transmitter receipt, and produce self-injection locking phenomenon; Receive this detection signal by receptor, this received detection signal is carried out frequency demodulation by this receptor, is demodulated to baseband output signal, to obtain at least one action/disturbing signal of aforementioned tested object.
In order to have better understanding in the application above-mentioned and other, special embodiment below, and coordinate accompanying drawing, be described in detail below:
Brief description of the drawings
Fig. 1 illustrates the block schematic diagram of action/disturbing signal detecting system of the application one embodiment.
Fig. 2 illustrates the block schematic diagram of action/disturbing signal detecting system of the application one embodiment.
Fig. 3 illustrates the block schematic diagram of the emitter of the application one embodiment.
Fig. 4 A illustrates an embodiment of demodulating unit.
Fig. 4 B illustrates an embodiment of demodulating unit.
Fig. 4 C illustrates an embodiment of demodulating unit.
Fig. 5 illustrates the whole implementation framework of the application one embodiment.
Fig. 6 illustrates the block schematic diagram of action/disturbing signal detecting system of the application one embodiment.
Fig. 7 illustrates the block schematic diagram of action/disturbing signal detecting system of the application one embodiment.
Fig. 8 illustrates and shows according to the baseband waveform of the application's one embodiment experimental result.
Fig. 9 illustrates and shows according to the time domain waveform of the application's one embodiment experimental result.
Figure 10 illustrates and shows according to the spectrogram of the cardiopulmonary signal detection of the application's one embodiment experimental result.
Figure 11 illustrates and shows according to the frequency spectrum of the application's one embodiment experimental result.
[symbol description]
100,100 ': action/disturbing signal detecting system
10: Transmit-Receive Unit 30: receiving element
20,41,404: oscillating unit 43,402,403: mixing unit
40,40 ': demodulating unit
102,102 ', 102A, 102B, 102C: receptor
101,101 ': emitter 50: processing unit
44,406,407: low-pass filter unit
42: time delay unit
60: signal generation unit 401: low noise amplification unit
405: quadrature power allocation units SU: testee
Detailed description of the invention
The technical terms of this description is with reference to the idiom of the art, and as this description is illustrated or defines part term, the explanation of this part term is as the criterion with explanation or the definition of this description.In addition, under the prerequisite that may implement, the relativeness between the described object of this description or event, connotation can comprise direct or indirect relation, so-called " indirectly " refers to the existence that still has intermedium or physical space between object, or between self-explanatory characters' part, still has the existence of intermediate event or interval.Moreover, below content relate to action/disturbing signal detecting, for the common technology in this field or principle, if do not relate to the application's technical characterictic, will it will not go into details.In addition, in diagram, the sequence of steps of the shape of element, size, ratio and flow process etc. is only signal, understands the application for those skilled in the art, and the non-practical range to the application is limited.
In addition, each embodiment of following description has respectively one or more technical characterictic, so this and do not mean that and use applicant must implement all technical characterictics in arbitrary embodiment simultaneously, or only can separately implement one or all technical characteristic in different embodiment.In other words, under the prerequisite that may implement, those skilled in the art can be according to the application's disclosure, and look self demand or design concept, optionally implement technical characterictic part or all of in arbitrary embodiment, or optionally implement the combination of technical characterictic part or all of in multiple embodiment, increase by this application and implement elasticity.
The application's disclosure comprises action/disturbing signal detecting system and method, but the not restriction to the application of the technical characterictic of the embodiment of the present application, only illustrates for the application and those skilled in the art understand the application's.In addition,, under the prerequisite that may implement, those skilled in the art can select equivalent element or step to realize the application according to the application's disclosure, that is the application's enforcement is not limited to the application's the disclosed embodiments.
In addition, if indivedual elements that action/disturbing signal detecting system of the application comprises are well known elements, do not affecting under situation fully open and that can realize according to this, below explanation will give memorandum for the details of indivedual elements of realizing.
Openly move/disturbing signal detecting system of the embodiment of the present application and method, wherein technology can be used for action/disturbing signal contactless and/or contact measurement testee, as physiological signal (breathing, heart beating, throat, with limb action etc., but be not limited to this) or other external disturbance information (as mechanical vibration frequency etc., but being not limited to this).In explanation down below, explain as an example of contactless cardiopulmonary detection example, but when knowing that it is not for limiting the application, present techniques also can be used for contact measurement.
Action/disturbing signal detecting system of the application and method can be sent radio wave/light detection ripple testee is detected.By the Doppler effect between detection period, its breathing by (1) testee, heart beating, throat, produced with the physiological phenomenon such as limb action or (2) other external disturbance information, launched radio wave/light is detected to ripple and carry out phase-modulation, and the radiofrequency signal after reflection/light detection ripple is inputed to oscillating unit.This oscillating unit can present self-injection locking phenomenon, and this self-injection locking phenomenon can be amplified the phase-modulated information of action/disturbance, to observe action/disturbance.
Please refer to Fig. 1, it shows according to the block schematic diagram of the action/disturbing signal detecting system of the embodiment of the present application.As shown in Figure 1, action/disturbing signal detecting system 100 comprises: at least one emitter 101 and at least one receptor 102.
Emitter 101 comprises Transmit-Receive Unit 10 and oscillating unit 20.Transmit-Receive Unit 10 couples or is electrically connected the signal output port of this oscillating unit 20, receives the output signal of this oscillating unit 20 and launches detection signal (STX) towards at least one tested object.Mat carries out phase-modulation in the Doppler effect of tested object to this detection signal (STX), becomes reflection detection signal (SRX), is received by this Transmit-Receive Unit 10.This Transmit-Receive Unit 10 is sent this reflection detection signal (SRX) into this oscillating unit 20 makes it produce self-injection locking phenomenon.The Injection Signal input path of this oscillating unit 20 is Injection Signal input port, or for carrying out Injection Signal input in one end of differential wave output port, to produce self-injection locking phenomenon.
In one embodiment, if oscillating unit 20 is for having the voltage controlled oscillator of single-ended signal output port, Transmit-Receive Unit 10 can be an antenna, couples or be electrically connected to the single-ended signal output port of oscillating unit 20, and single-ended signal output port can be used as Injection Signal input port and uses.That is the input path of Injection Signal is to carry out Injection Signal input from the single-ended signal output port of oscillating unit 20, to produce self-injection locking phenomenon.
In one embodiment, if oscillating unit 20 is for having the voltage controlled oscillator of differential wave output port, Transmit-Receive Unit 10 can be transmitting antenna and reception antenna, and transmitting antenna couples or be electrically connected to differential wave output port one end of oscillating unit 20; It is single-ended that reception antenna couples or be electrically connected to the differential wave output port other end of oscillating unit 20, and this end can be used as Injection Signal input port and uses.
In one embodiment, if oscillating unit 20 is for having the voltage controlled oscillator of single-ended signal output port and Injection Signal input port, Transmit-Receive Unit 10 can be transmitting antenna and reception antenna, and transmitting antenna couples or be electrically connected to the single-ended signal output port of oscillating unit 20; Reception antenna couples or is electrically connected to the Injection Signal input port of oscillating unit 20.
Receptor 102 comprises receiving element 30 and demodulating unit 40.Receiving element 30 receives this detection signal (STX), and couples or be electrically connected this demodulating unit 40.This demodulating unit 40 couples or is electrically connected this receiving element 30, this detection signal (STX) that receiving element 30 is received carries out frequency demodulation, be demodulated to baseband output signal, with at least one action/disturbing signal of obtaining tested object (as breathing, palmic rate, throat and limb action etc., but be not limited to this), or other external disturbance signals (as mechanical vibration frequency etc., but being not limited to this).
In the application one embodiment, action/disturbing signal detecting system can also comprise processing unit, receives the baseband output signal being transmitted by this demodulating unit; Processing unit is processed this baseband output signal, can obtain time domain waveform and the frequency-region signal of vibrating object in environment (as the cardiopulmonary of testee), to obtain action/disturbing signal information (as the analysis result to physiological signal or the analysis result to disturbing signal).
As shown in Figure 2, it shows according to the block schematic diagram of action/disturbing signal detecting system 100 ' of another embodiment of the application.Action/disturbing signal detecting system 100 ' also comprises processing unit 50.That is processing unit 50 can not be incorporated into (as Fig. 1) among action/disturbing signal detecting system, also can be integrated in (as Fig. 2) among action/disturbing signal detecting system.Even, in other possibilities of the application embodiment, processing unit can be placed in far-end, and the baseband output signal that the demodulating unit 40 of move/disturbing signal detecting system is exported can be sent to by wire/wireless mode the processing unit of far-end, and this is all in the application's spirit scope.
In the application one embodiment, emitter 101 ' can also comprise signal generation unit 60, as shown in Figure 3.The output port of signal generation unit 60 couples or is electrically connected to the voltage input end mouth of this oscillating unit 20, in order to determine the operation frequency of oscillating unit 20, makes oscillating unit 20 produce frequency modulated signal.
In the application one embodiment, Transmit-Receive Unit 10 comprises antenna, transmitting detection signal (STX), and receive reflection detection signal (SRX).
In the application one embodiment, Transmit-Receive Unit 10 comprises transmitting antenna and reception antenna, this detection signal of transmission antennas transmit (STX), and reception antenna receives this reflection detection signal (SRX).
The disclosed antenna of the application is single antenna or implement with aerial array.
In the application one embodiment, receiving element 30 comprises antenna, receives detection signal (STX).
In another embodiment of the application, be different from previous embodiment part and be, Transmit-Receive Unit 10 comprises electrical to optical converter and optical-electrical converter.Electrical to optical converter couples or is electrically connected to oscillating unit 20, and its voltage signal that oscillating unit 20 is transmitted is converted to light and detects ripple, with directive testee.This light detect ripple by testee reflected light electric transducer after, convert voltage signal to by optical-electrical converter, deliver to oscillating unit 20.30 of receiving elements comprise optical-electrical converter, and its optical-electrical converter receives light and detects after ripple, converts voltage signal to, delivers to demodulating unit 40.
In the application one embodiment, as shown in Figure 4 A, demodulating unit 40 comprises oscillating unit 41, time delay unit 42, mixing unit 43 and low-pass filter unit 44.Receiving element 30 couples or is electrically connected to the input port of this oscillating unit 41, this detection signal (STX) is injected into oscillating unit 41 and makes it produce injection locking.
The output port of oscillating unit 41 couples respectively or is electrically connected time delay unit 42 and mixing unit 43, two input ports of mixing unit 43 couple respectively or are electrically connected the output port of oscillating unit 41 and the output port of time delay unit 42, the output port of mixing unit 43 couples or is electrically connected the input port of this low-pass filter unit 44, and mixing unit 43 carries out frequency demodulation with time delay unit 42 to the output signal of oscillating unit 41; The mutual modulation signal that this mixing unit 43 of low-pass filter unit 44 filterings is exported, the output of low-pass filter unit 44 i.e. the baseband output signal SB of this demodulating unit 40.The phase of output signal of oscillating unit 41 is synchronizeed with this detection signal (STX).The integral multiple of spending when two input signal phase phase difference 90 of smear unit 43, and the time delay that provides of delay cell 42 is when very little, and the output signal of oscillating unit 41 will be directly proportional in principle to the cardiopulmonary signal of analog control voltage Vt and testee.In one embodiment, oscillating unit 41 comprises at least one output port.
In the application one embodiment, as shown in Figure 4 B, receptor 102 ' comprises receiving element 30 (taking antenna as example), mixing unit 43, time delay unit 42 and low-pass filter unit 44.Time delay unit 42 couples or is electrically connected to receiving element 30, and these 43 two ends, mixing unit couple respectively or be electrically connected to receiving element 30 and this time delay unit 42, and low-pass filter unit 44 couples or be electrically connected the outfan of this mixing unit 43.
Fig. 5 is the whole implementation framework of the demodulating unit embodiment of Fig. 4 A and processing unit, emitter etc.
In the application one embodiment, as shown in Figure 4 C, demodulating unit 40 ' comprises 401, two mixing unit 402,403, low noise amplification unit, oscillating unit 404, quadrature power allocation units 405 and two low-pass filter units 406,407.
Low noise amplification unit 401 receives the detection signal being transmitted by receiving element 30 (taking antenna as example), and low noise amplification unit 401 outfans couple respectively or be electrically connected to the input of mixing unit 402,403, with the injection end of oscillating unit 404.Oscillating unit 404 is subject to low noise amplification unit 401 output signal S
iN, i(t) impact and produce injection locking.Work as S
iN, i(t) when the initial oscillation of frequency and oscillating unit 404 is different, after injection locking.The output signal frequency of oscillating unit 404 will with S
iN, i(t) frequency is identical, the output signal of oscillating unit 404 and S
iN, i(t) between and have one extra time postpone.Injection locking mechanism thus, can carry out frequency demodulation, because oscillating unit 404 is subject to the cause of lock-in range impact, can be considered band filter, and is applicable to frequency division multiplexing system to support multidigit user simultaneously again.Oscillating unit 404 couples or is electrically connected to the input of quadrature power allocation units 405; Quadrature power allocation units 405 are exported two signals to mixing unit 402,403, and are each other orthogonality relation between two signals.
The outfan of mixing unit 402,403 couples respectively or is electrically connected to the input of low-pass filter unit 406,407.The output S of low pass filter 406,407
i, i(t), S
q, i(t),, after performing mathematical calculations, can learn demodulation waveforms and output base band (baseband) output signal.Above-mentioned mathematical operation is for example tan
-1((S
i, i(t))/(S
q, i(t))), the number parameter that i is this receptor, t is time parameter.
The application one embodiment, as shown in Figure 6, the frequency modulated signal that emitter 101 ' produces will receive by multiple receptor 102A～102C the line frequency demodulation of going forward side by side respectively, can obtain emitter locating information by the phase difference between the output baseband signal of more different receptor 102A～102C, for example indoor positioning information etc., but not as limit.
Receptor 102A, receptor 102B, receptor 102C receive respectively the radiofrequency signal of emitter 101 ' transmitting, after the line frequency of going forward side by side demodulation, the frequency modulated signal that is subject to action/disturbing signal and analog control voltage modulation is demodulated to voltage signal, and exports respectively baseband signal SBA～SBC to processing unit 50.This processing unit 50 carries out digital filtering, amplification to baseband signal SBA～SBC and judges after the phase contrast between baseband signal SBA～SBC, can learn the locating information of testee.Separately, this processing unit 50 carries out after digital filtering, amplification and Fourier transform baseband signal SBA～SBC, can obtain time domain waveform and the frequency of action/disturbance (for example cardiopulmonary) signal.
In the present embodiment, emitter 101 ' is worn in this testee front, can locate simultaneously and carry out sensing cardiopulmonary signal for testee.The signal generation unit 60 of emitter 101 ' couples or is electrically connected the voltage input end mouth of this oscillating unit 20, and this signal generation unit 60 produces analog control voltage Vt makes oscillating unit 20 produce frequency modulated signal.In the present embodiment, in the time that the frequency demodulator framework of receptor 102A, 102B and 102C is Fig. 4 A, because the oscillating unit (not shown) of receptor 102A, 102B and 102C can amplify radio frequency transmissions STX that receptor 102A～102C receives to same-amplitude, therefore baseband signal SBA, SBB are rough identical with SBC amplitude; In the time that the frequency demodulator framework of receptor 102A, 102B and 102C is Fig. 4 B or Fig. 4 C, baseband output signal SBA, SBB can be different from the amplitude of SBC.
In the present embodiment, because Transmit-Receive Unit 10 has different distances to receptor 102A, 102B from indivedual receiving element (not shown) of 102C, different receiving elements receive detection signal STX different time delays, this time delay be also reflected in multiple receptor 102A, 102B and 102C baseband signal SBA, SBB, and SBC on.In the present embodiment, the outfan that receives receptor 102A, 102B and 102C couples or is electrically connected this processing unit 50, this processing unit receives multiple baseband signal SBA, SBB and SBC, after the phase contrast distance between more different baseband signals, can convert and obtain detection signal by the time delay of each receptor 102A, 102B and 102C reception, this processing unit 50 can be based on different receiving elements position and then the reckoning position of learning Transmit-Receive Unit 10, i.e. the locating information of testee.Separately, this baseband signal SBA, SBB and SBC also comprise action/disturbance (for example cardiopulmonary, throat and limb action etc.) signal of testee, after digital filtering and Fourier transform, can obtain time domain waveform and the frequency of action/disturbing signal (for example breathing, heart beating, throat and limb action etc.).
Another embodiment of the application, as shown in Figure 7, in emitter 101 ', the analog control voltage Vt that signal generation unit 60 produces couples or is electrically connected this processing unit 50.; in the present embodiment; synchronized with each other between emitter 101 ' and receptor 102A～102C; can obtain the absolute distance of Transmit-Receive Unit 10 and different receptor 102A～102C by analog control voltage Vt relatively and baseband signal SBA, the SBB of receptor 102A～102C and the phase contrast of SBC, and and then obtain the locating information of testee.
(time of advent is poor for the TDoA adopting except the embodiment exemplifying, Time Difference of Arrival) outside technology, also can adopt other location technologies or give combination by various location technologies, below give an example several frequently seen localization method and simply describing, but the application's embodiment is not as limit.For example RSS (received signal strength, received signal strength) technology, utilize signal intensity that different demodulator circuits obtain to coordinate electromagnetic transmission equation (received signal power square is inversely proportional to distance) to estimate transmitter position; ToA (time of advent, Time of Arrival) technology, be subject to analog control voltage to produce the warbled time as initial point taking radiating circuit, and after the baseband output signal of receiving circuit demodulation and analog control voltage are compared, known radiating circuit, to the transmission time of different demodulator circuits, gets final product place, transmitter computes position; And AoA (arrives angle, Angle of Arrival) technology, the receiving element of demodulator circuit is changed to receiving antenna array, carry out the scanning of beam. position, in the time that two demodulator circuits can obtain baseband output signal simultaneously, can calculate radiating circuit position.
Refer to Fig. 8 in the present embodiment, correspond to the experiment of Fig. 6, the position of testee is (3.2,4.5), and the position of receptor 102A is (0,0), and the position of receptor 102B is (8,0), and the position of receptor 102C is
oscillating unit 20 operates in 2.45GHz, and it is 2.5MHz that signal generation unit 60 produces frequency, the string ripple that amplitude is 1Vp-p, and making oscillating unit produce modulation frequency range is the frequency modulated signal that 7MHz, modulating frequency are 2.5MHz.Receptor baseband signal as shown in Figure 8, SBA (as line A) is 3.51 ° with the phase contrast of SBB (as line B), the phase contrast of SBB and SBC (as line C) is-12.15 °, the phase contrast of SBC and SBA is 8.64 °, the locating information of its sensing is (3.1146,4.4954), very consistent with position result.
Referring again to Fig. 9 to Figure 11.Time domain waveform while obtaining non-contact detecting by Fig. 9, it comprises the action/disturbance informations such as breathing and heart beating.Refer to Figure 10, after Fourier transform, frequency spectrum in the different time cycle shows as shown in figure 10, line A, the line B of Figure 10 and line C represent respectively the 15th to 25 seconds, the 20th to 30 seconds, with the frequency spectrum of the 25th to 35 seconds, due between detection period, testee has irregular health to move, and therefore cannot obtain stable cardiopulmonary signal, as Figure 92 is subject to random movement of health for 3 to 26 seconds and has erratic fluctuating.This experiment is multiplied each other the frequency spectrum of three different times and is got after three/first power, and frequency spectrum shows as shown in figure 11, can identification breathe dominant frequency and be about respectively 0.31Hz and 1.13Hz with heart beating dominant frequency, i.e. 19 frequency of respiration/minute and 69 heart beating number of times/minute.Match with other Medical Instruments sensing result.
Action/disturbing signal detecting method of another embodiment of the application comprises: spontaneous emitter is launched detection signal; This detection signal is reflected at least one reflection detection signal by least one tested object; This at least one reflection detection signal of this transmitter receipt, and produce self-injection locking phenomenon; Receive this detection signal by receptor; This received detection signal is carried out frequency demodulation by this receptor, is demodulated to baseband output signal, to obtain at least one action/disturbing signal of tested object.
In another embodiment of the application, also can process to obtain aforementioned at least one action/disturbing signal information or external disturbance information to the baseband output signal receiving by processing unit.And in another embodiment, this processing unit also can receive multiple baseband output signals from multiple receptors, the relatively phase contrast distance between these baseband output signals, calculates the time delay that the plurality of receptor receives, and obtains the position of this emitter.
The embodiment of the application's action/disturbing signal detecting method can, with reference to the embodiment of aforesaid action/disturbing signal detecting system, separately not explain at this.
In sum, although present techniques with embodiment openly as above, so it is not in order to limit the disclosure.The application one of ordinary skill in the art, not departing from the spirit and scope of invention, when being used for a variety of modifications and variations.Therefore, the application's protection domain is when being as the criterion depending on appended claims confining spectrum.
Claims (27)
1. action/disturbing signal detecting system, comprising:
At least one emitter, this emitter at least comprises Transmit-Receive Unit and the first oscillating unit; And
At least one receptor, this receptor at least comprises receiving element and demodulating unit;
Wherein,
This Transmit-Receive Unit couples or is electrically connected the signal output port of this first oscillating unit, receives the output signal of this first oscillating unit and launches detection signal;
This detection signal is reflected at least one reflection detection signal by least one tested object, is received by this Transmit-Receive Unit;
This Transmit-Receive Unit is sent this reflection detection signal into this first oscillating unit becomes the Injection Signal of this first oscillating unit, makes it produce self-injection locking phenomenon;
This receiving element couples or is electrically connected this demodulating unit, receives this detection signal; And
This detection signal that this demodulating unit receives this receiving element carries out frequency demodulation, is demodulated to baseband output signal, to obtain at least one action/disturbing signal of this tested object.
2. action/disturbing signal detecting system as claimed in claim 1, also comprises:
Processing unit, is coupled to this demodulating unit, receives this baseband output signal being transmitted by this demodulating unit;
Wherein, this processing unit processes to obtain at least one action/disturbing signal information of this tested object to this baseband output signal.
3. action/disturbing signal detecting system as claimed in claim 1, also comprises:
Signal generation unit, couples or is electrically connected to the voltage input end mouth of this first oscillating unit.
4. action/disturbing signal detecting system as claimed in claim 1, wherein,
This Transmit-Receive Unit comprises:
The first antenna, launches this detection signal, and receives this reflection detection signal.
5. action/disturbing signal detecting system as claimed in claim 1, wherein,
This Transmit-Receive Unit comprises:
The first antenna, launches this detection signal; And
The second antenna, receives this reflection detection signal.
6. action/disturbing signal detecting system as claimed in claim 1, wherein,
This receiving element comprises:
The first antenna, receives this detection signal.
7. action/the disturbing signal detecting system as described in claim 4～5 arbitrary, wherein this first antenna and this second antenna are single antenna or aerial array.
8. action/disturbing signal detecting system as claimed in claim 6, wherein this first antenna is single antenna or aerial array.
9. action/disturbing signal detecting system as claimed in claim 1, wherein,
This Transmit-Receive Unit comprises:
Electrical to optical converter, converts this output signal of this first oscillating unit to light and detects ripple, to treat as this detection signal; And
The first optical-electrical converter, converts this reflection detection signal to first voltage signal, to deliver to this first oscillating unit.
10. action/disturbing signal detecting system as claimed in claim 9, wherein,
This receiving element comprises:
The second optical-electrical converter, converts this detection signal to second voltage signal.
11. action/disturbing signal detecting systems as claimed in claim 1, wherein,
The input path of this Injection Signal is the Injection Signal input port of this first oscillating unit.
12. action/disturbing signal detecting systems as claimed in claim 1, wherein,
The input path of this Injection Signal is to carry out this Injection Signal input from one end of the differential wave output port of this first oscillating unit, to produce self-injection locking phenomenon.
13. action/disturbing signal detecting systems as claimed in claim 1, wherein,
The input path of this Injection Signal is to carry out this Injection Signal input from the single-ended signal output port of this first oscillating unit, to produce self-injection locking phenomenon.
14. action/disturbing signal detecting systems as claimed in claim 1, wherein,
This detection signal and this reflection detection signal are all radiofrequency signal.
15. action/disturbing signal detecting systems as claimed in claim 2, wherein,
This processing unit carries out digital filtering to this baseband output signal, amplifies, and judges after the phase contrast of this baseband output signal, obtains the locating information of this at least one tested object.
16. action/disturbing signal detecting systems as claimed in claim 2, wherein,
This processing unit carries out digital filtering to this baseband output signal, amplifies, and after Fourier transform, obtains time domain wave mode and the frequency of this at least one action/disturbing signal.
17. action/disturbing signal detecting systems as claimed in claim 2, wherein,
This processing unit receives multiple baseband output signals from multiple receptors, and the relatively phase contrast distance between these baseband output signals, calculates the time delay that the plurality of receptor receives, and obtains the position of this emitter.
18. action/disturbing signal detecting systems as claimed in claim 2, wherein,
This emitter also comprises signal generation unit, couples or be electrically connected to this first oscillating unit; And
This signal generation unit produces analog control voltage, and is sent to this first oscillating unit and this processing unit.
19. action/disturbing signal detecting systems as claimed in claim 18, wherein,
This received detection signal and this analog control voltage are demodulated to voltage signal by this demodulating unit.
20. action/disturbing signal detecting systems as claimed in claim 1, wherein,
This demodulating unit comprises:
The second oscillating unit, the second time delay unit, the second mixing unit and the second low-pass filter unit;
This receiving element couples or is electrically connected to the input port of this second oscillating unit, this detection signal is injected into this second oscillating unit and makes it produce injection locking;
At least one output port of this second oscillating unit couples respectively or is electrically connected this second time delay unit and this second mixing unit;
Two input ports of this second mixing unit couple respectively or are electrically connected this at least one output port of this second oscillating unit and the output port of this second time delay unit, and the output port of this second mixing unit couples or be electrically connected the input port of this second low-pass filter unit;
This second mixing unit and this second time delay unit carry out frequency demodulation to the output signal of this second oscillating unit respectively; And
The mutual modulation signal of the output signal of this this second mixing unit of the second low-pass filter unit filtering, the output of this second low-pass filter unit is this baseband output signal of this demodulating unit.
21. action/disturbing signal detecting systems as claimed in claim 20, wherein,
The phase of output signal of this second oscillating unit is synchronizeed with this detection signal.
22. action/disturbing signal detecting systems as claimed in claim 1, wherein,
This demodulating unit comprises: the 3rd mixing unit, the 3rd time delay unit and the 3rd low-pass filter unit;
The 3rd two ends, mixing unit couples respectively or is electrically connected this receiving element and the 3rd time delay unit; And
The 3rd low-pass filter unit couples or is electrically connected the outfan of the 3rd mixing unit.
23. action/disturbing signal detecting systems as claimed in claim 1, wherein, this demodulating unit comprises:
The 4th low noise amplification unit, the 4th mixing unit, the 5th mixing unit, the 4th oscillating unit, the 4th quadrature power allocation units, the 4th low-pass filter unit and the 5th low-pass filter unit;
The 4th low noise amplification unit receives this detection signal that this receiving element transmits, and the outfan of the 4th low noise amplification unit couples respectively or be electrically connected to input, the input of the 5th mixing unit and the injection end of the 4th oscillating unit of the 4th mixing unit;
The 4th oscillating unit receives the signal of the 4th low noise amplification unit output, produces injection locking;
The 4th oscillating unit couples or is electrically connected to the input of the 4th quadrature power allocation units;
The 4th quadrature power allocation units couple respectively or are electrically connected to the 4th mixing unit and the 5th mixing unit, and export two signals to the 4th mixing unit and the 5th mixing unit, and between this two signal, are orthogonality relation each other;
Indivedual outfans of the 4th mixing unit and the 5th mixing unit couple respectively or are electrically connected to the input of the 4th low-pass filter unit and the input of the 5th low pass filter; And
Indivedual outputs to the 4th low pass filter and the 5th low pass filter perform mathematical calculations, with this baseband output signal of output.
24. action/disturbing signal detecting systems as claimed in claim 23, wherein,
The 4th low pass filter and the 5th low pass filter are output as S
1, iand S (t)
2, i(t); And
This mathematical operation is tan
-1((S
1, i(t))/(S
2, i(t))), the number parameter that i is this receptor, t is time parameter.
25. 1 action/disturbing signal detecting methods, are applicable to one action/disturbing signal detecting system, comprising:
Spontaneous emitter is launched detection signal;
This detection signal is reflected at least one reflection detection signal by least one tested object;
This at least one reflection detection signal of this transmitter receipt, and produce self-injection locking phenomenon;
Receive this detection signal by receptor; And
This received detection signal is carried out frequency demodulation by this receptor, is demodulated to baseband output signal, to obtain at least one action/disturbing signal of aforementioned tested object.
26. action/disturbing signal detecting methods as claimed in claim 25, also comprise:
By processing unit, this baseband output signal receiving is processed to obtain this at least one action/disturbing signal information.
27. action/disturbing signal detecting methods as claimed in claim 26, wherein,
This processing unit receives multiple baseband output signals from multiple receptors, and the relatively phase contrast distance between these baseband output signals, calculates the time delay that the plurality of receptor receives, and obtains the position of this emitter.
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| US201361751978P | 2013-01-14 | 2013-01-14 | |
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| TW102116921A TWI493213B (en) | 2013-01-14 | 2013-05-13 | Motion/interference signal detection system and method thereof |
| TW102116921 | 2013-05-13 |
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