CN103777203A - Microwave action detector - Google Patents
Microwave action detector Download PDFInfo
- Publication number
- CN103777203A CN103777203A CN201210488286.3A CN201210488286A CN103777203A CN 103777203 A CN103777203 A CN 103777203A CN 201210488286 A CN201210488286 A CN 201210488286A CN 103777203 A CN103777203 A CN 103777203A
- Authority
- CN
- China
- Prior art keywords
- microwave
- signal
- control voltage
- processing apparatus
- signal processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000010363 phase shift Effects 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 14
- 230000009514 concussion Effects 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 description 12
- 238000001514 detection method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
- G01S13/583—Velocity or trajectory determination systems; Sense-of-movement determination systems using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves and based upon the Doppler effect resulting from movement of targets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The microwave motion detector comprises: the transmitting device transmits a microwave signal to a space to be detected; a receiving device for receiving the reflected microwave signal reflected by the space to be measured; the signal processing device is used for processing the reflected microwave signal received by the receiving device so as to judge whether the space to be detected has disturbance or not, and the signal processing device generates the microwave signal; and a path switching device, coupled to the signal processing device and the transmitting device, for causing the plurality of transmitting paths through which the microwave signal passes to have different phase shifts.
Description
Technical field
The present invention relates to a kind of microwave motion detecting device.
Background technology
Motion detector is usually used in saving from damage supervision or personnel's identification application on the scene.Generally, realize motion detector with infrared technology.But infrared technology is easily judged by accident because of ambient temperature effect, even cannot detect.
The utilization of microwave type motion detector is the general principle of strangling all, relatively transmits and receives the phase differential between signal.If phase differential changes, represent and in environment, have disturbing source.
But, although traditional microwave formula motion detector framework is simple, need to solve sensing Zeroes.Now please refer to Fig. 1, it shows the sensing sensitivity change curve of traditional microwave formula motion detector.In Fig. 1, transverse axis is distance, and the longitudinal axis is sensing sensitivity.That is sent by detecting device 100 transmits after running into determinand 110, can be reflected into as receiving signal.As seen from Figure 1, in the place of sensing zero point (that is sensing sensitivity is 0), cannot sensing (that is if determinand 110 is positioned at sensing part at zero point, detecting device 100 cannot sense determinand 110).Sensing phenomenon at zero point is all general common faults of strangling framework of single-frequency, cannot detect, and repeat with the cycle of per quart electromagnetic wavelength in these positions.On the contrary, be peaked place at sensing sensitivity, be best sensing points.
In addition, microwave type motion detector adopts with frequency continuous wave mode simultaneously and detects.In measurement process, utilize mixer to carry out frequency reducing, therefore can produce the accurate skew in direct current position (dc offset) problem, cause receiver to be poured into by powerful direct current signal, cause saturated and signal cannot be detected.If can solve, than the effect that is easier to reach stable detection.
Summary of the invention
The object of the present invention is to provide a kind of microwave motion detecting device, it is more stable that it detects effect, is difficult for receiving bad result that cannot interpretation because the variation of external environment causes, and can effectively solves the saturated problem of dynamic range of traditional radar receiver.
According to an one exemplary embodiment of the present invention, a kind of microwave motion detecting device is proposed, comprising: emitter, launched microwave signal is to space to be measured; Receiving trap, receives the reflected microwave signal being reflected back by this space to be measured; Signal processing apparatus, processes this reflected microwave signal that this receiving trap receives, and to judge in this space to be measured whether have disturbance, this signal processing apparatus produces this microwave signal; And path switching device, be coupled to this signal processing apparatus and this emitter, this path switching device make this microwave signal multiple transmission paths of process there is different phase shift.
According to another one exemplary embodiment of the present invention, a kind of microwave motion detecting device is proposed, comprising: emitter, launched microwave signal is to space to be measured; Receiving trap, receives the reflected microwave signal being reflected back by this space to be measured; Path switching device, is coupled to this receiving trap, this path switching device make this reflected microwave signal multiple RX path of process there is different phase shift; And signal processing apparatus, process this reflected microwave signal that this receiving trap receives, to judge in this space to be measured whether have disturbance, this signal processing apparatus produces this microwave signal.
According to a more one exemplary embodiment of the present invention, a kind of microwave motion detecting device is proposed, comprising: R-T unit, launched microwave signal is space to be measured extremely, and receives the reflected microwave signal being reflected back by this space to be measured; Signal processing apparatus, processes this reflected microwave signal that this R-T unit receives, and to judge in this space to be measured whether have disturbance, this signal processing apparatus produces this microwave signal; And path switching device, be coupled to this signal processing apparatus and this R-T unit, this path switching device make this microwave signal and this reflected microwave signal multiple paths of process there is different phase shift.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Accompanying drawing explanation
Fig. 1 shows the sensing sensitivity change curve of traditional microwave formula motion detector;
Fig. 2 shows the functional-block diagram of microwave motion detecting device according to an embodiment of the invention;
Fig. 3 A shows according to the exemplary embodiment of the delay path switch unit of the embodiment of the present invention;
Fig. 3 B shows the sensing sensitivity variation schematic diagram according to the embodiment of the present invention;
Fig. 4 A and Fig. 4 B show according to the path switching controls sequential chart of the present embodiment;
Fig. 5 A and Fig. 5 B show respectively according to the function block diagram of the microwave motion detecting device of other embodiments of the invention.
Wherein, Reference numeral
100,300: detecting device 110,310: determinand
200,500A, 500B: microwave motion detecting device
210: transmit antenna
220,520A, 520B: delay path switch unit
225: phase-locked loop (signal processing apparatus)
230: phase/frequency detection unit
240: charge pump 250: low-pass filter
260: double-ended control voltage controlled oscillator
270: receiving antenna 280: path switch controller
P1, P2: path 510: antenna
Embodiment
Below in conjunction with accompanying drawing, structural principle of the present invention and principle of work are described in detail:
The embodiment of the present invention proposes a microwave type motion detector framework, and it uses all general principles of strangling.In the embodiment of the present invention, highly sensitive self-injection locking voltage controlled oscillator, receiving reflected by determinand all general while strangling phase modulated signal, can produce corresponding output phase or frequency disturbance.Utilize phase-locked loop to lock the output frequency of this injection locking voltage controlled oscillator, can make external world's (determinand) disturbance information be reflected into the control end voltage of injection locking voltage controlled oscillator, and fixing output frequency is to reduce frequency range demand and electromagnetic interference (EMI).
The embodiment of the present invention is switched the transmission/reception path that tool out of phase is moved, make the sensing null position in these transmission/reception paths not overlapping (or even the sensing null position in these transmission/reception paths is interlocked), to eliminate all general sensing phenomenons at zero point of strangling radar of single-frequency.The complementary benefit of the sensing sensitivity tool in these transmission/reception paths, also even in the time that wherein a path is in sensing zero point, other paths can be in sensing zero point, therefore can be by stable the disturbance of determinand detecting.
The embodiment of the present invention, in the time detecting low frequency action/disturbing signal, can be closed transmit signal path in the non-sampling spot period, reduces in principle average microwave emissive power.
The embodiment of the present invention utilizes double-ended control voltage controlled oscillator to adjust direct current position standard, to eliminate the accurate skew in direct current position.Its physical principle is to add another Control of Voltage port and another voltage variable capacitor.Change the resonant frequency of oscillator resonant cavity, allow the direct current position standard of output signal of phase-locking type oneself injection locking double-ended control voltage controlled oscillator recall to original start value.
Fig. 2 shows the functional-block diagram of microwave motion detecting device according to an embodiment of the invention.As shown in Figure 2, microwave motion detecting device 200 comprises: at least one transmission antenna 210, delay path switch unit 220, phase-locked loop 225 and at least one receiving antenna 270.Phase-locked loop 225 comprises: phase/frequency detection unit (Phase Frequency Detector, PFD) 230, charge pump (Charge Pump, CP) 240, low-pass filter (Low Pass Filter, LPF) 250 and double-ended control voltage controlled oscillator 260.In this case embodiment, phase-locked loop can be described as again signal processing apparatus.Microwave motion detecting device 200 also alternative comprises path switch controller 280.
Transmit antenna 210 in order to send out microwave signal, receiving antenna 270 microwave signal that reception is reflected back by determinand.
Delay path switch unit 220, in order to switch different delay paths, moves (that is mulitpath exists phase differential to each other) so that mulitpath has out of phase.So, can select different delay paths to treat as signal transmission path.Down below, explain as example to switch two different delay paths, but when knowing that this case is not limited to this.This case also can form the different paths that postpone of many tools, and switches between these different delay paths.
Now please refer to Fig. 3 A, it shows according to the exemplary embodiment of the delay path switch unit 220 of the embodiment of the present invention.As shown in Figure 3A, delay path switch unit 220 comprises: delay cell D, switch SW 1 and SW2.Switch SW 1 and SW2 such as but be not limited to as single-pole double-throw (SPDT) (SPDT, Single Pole Double Throw) switch.Delay cell D is for example 90 degree such as being by the phase delay of signal.That is the phase differential between path P 1 and P2 is for example 90 degree.
Now please refer to Fig. 3 B, it shows the sensing sensitivity variation schematic diagram according to the embodiment of the present invention, and its transverse axis is distance, and the longitudinal axis is sensing sensitivity.Can be found out by Fig. 3 B, owing to there being two different delay paths, the sensing null position of this two paths differs from one another.So prior art causes the shortcoming of detector senses less than determinand because of sensing zero point, can be solved in embodiments of the present invention.In detail, if determinand 310 is positioned at the sensing zero point on the wherein paths of detecting device 300, this determinand 310 is by the sensing zero point that can not be positioned on another paths.
Now go back to Fig. 2.Double-ended control voltage controlled oscillator 260 is controlled in phase-locked loop 225.Phase-locked loop 225 also can be described as signal processing apparatus.The details of phase-locked loop 225 is as follows.Phase/frequency detection unit 230 is in order to detect the output signal of double-ended control voltage controlled oscillator 260 and the defeated phase differential (or difference on the frequency) of reference signal REF.
Double-ended control voltage controlled oscillator 260 is injection locking pressure control oscillator structure.Double-ended control voltage controlled oscillator 260 is output signal and injection (that is reception) signal simultaneously.In other possibilities embodiment, the output signal of double-ended control voltage controlled oscillator 260 can be connected to the input end of delay path switch unit 220 and the input end of phase-locked loop 225 through power divider (not shown).The output microwave signal of double-ended control voltage controlled oscillator 260, by after delay path switch unit 220, is emitted to determinand/space to be measured by emitting antenna 210.
If there is disturbing signal (this disturbance is such as being human body heartbeat, human body respiration, window vibration etc.) in space to be measured, transmit while being reflected, due to general effects of strangling all, make the phase place of reflected signal or frequency can change (with respect to transmitting).This reflected signal receives via receiving antenna 270, and can after amplifying, (amplifier is not shown) be injected into double-ended control voltage controlled oscillator 260.Double-ended control voltage controlled oscillator 260 is because reflective signal effects makes phase place or the frequency variation of its output signal.The phase place of the output signal of double-ended control voltage controlled oscillator 260 or frequency shift amount enter behind phase-locked loop 225, and phase-locked loop 225 can produce corresponding first for this phase place or frequency change and control voltage VCO_CN1 and return reference frequency with the output frequency of revising double-ended control voltage controlled oscillator 260.Observe this first control voltage VCO_CN1 and can learn external disturbance information.
In addition, in the present embodiment, second of double-ended control voltage controlled oscillator 260 is controlled voltage VCO_CN2 can be in order to eliminate the accurate skew in its direct current position.The concussion frequency of double-ended control voltage controlled oscillator 260 controls voltage VCO_CN1 by two and VCO_CN2 determines.Cause the first main control voltage VCO_CN1 to produce the accurate skew in direct current position during if double-ended control voltage controlled oscillator 260 is subject to external disturbance effect of signals, can list following equation (1) according to physical principle and calculate second of required variation and control voltage VCO_CN2, eliminate the accurate skew in direct current position of the first control voltage VCO_CN1.Wherein Kv1, Kv2 is system constants, is that deviser can decide in its sole discretion.
Kv1*△VCO_CN1+Kv2*△VCO_CN2=0 (1)
Wherein, △ VCO_CN1 and △ VCO_CN2 represent respectively the voltage variety of first and second control voltage VCO_CN1 and VCO_CN2.
Can be released by above formula (1):
If detect when the main first direct current mean value of controlling voltage VCO_CN1 changes, can obtain the second required control voltage VCO_CN2 variable quantity according to upper formulation (1) and (2).For example but be not limited to, constant K v1 is 2MHz/V and Kv2 is 20MHz/V.If system detects when the main first direct current mean variation of controlling voltage VCO_CN1 is 1V, can obtain the second control voltage VCO_CN2 variable quantity for-0.1V according to upper formulation (1) and (2).That is the second control voltage VCO_CN2 is downgraded to 0.1V can be eliminated accurate the direct current position of the first control voltage VCO_CN1 skew.That is this first accurate skew in direct current position of controlling the external disturbance information of voltage VCO_CN1 representative is eliminated.
On the implementation, the implementation of double-ended control voltage controlled oscillator 260 can be in traditional VCO and adds a Control of Voltage port and a voltage variable capacitor (varactor).The resonant frequency that changes resonant cavity allows the direct current position standard of the first control voltage of controlling phase-locking type oneself's injection locked oscillator (double-ended control voltage controlled oscillator 260) and recalls to original start value.So, do not need additionally to add complicated control loop and radio-frequency (RF) component.Adopting said method can effectively solve the saturated problem (because the accurate skew in direct current position causes) of dynamic range of traditional radar receiver, make the detection effect of microwave detector more stable, be difficult for receiving bad result that cannot interpretation because the variation of external environment causes.
Now please refer to Fig. 4 A and Fig. 4 B, it shows according to the path switching controls sequential chart of the present embodiment.In Fig. 4 A, toggle path P1 and P2, so can timesharing reception/transmission two path P1 and the sensing signal of P2, to avoid being subject to the sensing Zeroes because of path.
In addition, if the disturbance of institute's detected object belong at a slow speed low frequency signal (such as, mankind's heartbeat/breathing is about 72 times/minute, it is about 1.2Hz), the embodiment of the present invention also can reduce emissive power.As shown in Figure 4 B, such as but be not limited to, be about 1ms the launch time of path P 1 and P2.Be about 48ms without transmitting the period (within without the transmission period, not launching microwave signal), average frequency is 20Hz, and it is far above the forcing frequency of object under test.Hence one can see that, in the present embodiment, can close transmission path separately in two paths outside sample time, to reduce average transmit power but still do not detract detection sensitivity.The switching sequence of Fig. 4 A and Fig. 4 B can be controlled by path switch controller (as shown in Figure 2).This path switch controller can send multiple switch controlling signals, carrys out the multiple switches in the switch unit of control lag path.
Fig. 5 A and Fig. 5 B show respectively according to the function block diagram of the microwave motion detecting device of other embodiments of the invention.Comparison diagram 5A and Fig. 2 can learn, in the microwave motion detecting device 500A of Fig. 5 A, delay path switch unit 520A is in order to switch different delay paths in RX path.Comparison diagram 5B and Fig. 2 can learn, in the microwave motion detecting device 500B of Fig. 5 B, its single antenna 510 is simultaneously for receiving and transmitting microwave signal, but is different from Fig. 2, and the toggle path phase shift of the delay path switch unit 520B in Fig. 5 B is for example 45 degree.
In addition, those skilled in the art be when can learn, above-described embodiment of this case can combination in any, and it is all in this case spirit scope.Such as, this case again another may embodiment in, delay path switch unit can be all set in transmission path and RX path, to switch respectively transmission path and RX path, its details can be learnt by above-mentioned discussion, not repeat in this.
The embodiment of the present invention is applicable to detection, for example but be not limited to human breathing, mankind's heartbeat, disturbance, vibration (such as window vibration) etc.
In addition,, although the embodiment of the present invention proposes toggle path delayed mode with all general radars of strangling of self-injection locking formula of arranging in pairs or groups, the toggle path delayed mode of the embodiment of the present invention also can be applicable to all general radar frameworks of strangling of other single-frequency.
From the above, the above-mentioned multiple embodiment of the present invention at least have following advantage:
In embodiments of the present invention, for solve sensing Zeroes (that is, cannot sense external disturbance in some position), utilize and switch the transmission/reception path that tool out of phase is moved, make the sensing null position in these transmission/reception paths not overlapping (or even the sensing null position in these transmission/reception paths is interlocked).Thus, tested object in each position almost all in good sensing sensitivity, to eliminate sensing phenomenon at zero point.That is to say, the sensing sensitivity in these transmission/reception paths can be complementary.
In addition,, if detect low frequency action/disturbing signal, the embodiment of the present invention can utilize lower sampling frequency to be still enough to detect disturbance.Even, external emitting radio waves can be do not needed in the non-sampling spot period, average transmit power can be further effectively reduced, more can be in actual use, reduce microwave to the hurtful misgivings of human-body safety.
The embodiment of the present invention utilizes double-ended control voltage controlled oscillator to adjust direct current position standard, to eliminate the accurate skew in direct current position, and does not need additionally to add complicated control loop and radio-frequency (RF) component.The detection effect of the microwave detector of the embodiment of the present invention is more stable, is difficult for receiving bad result that cannot interpretation because the variation of external environment causes.The embodiment of the present invention can effectively solve the saturated problem of dynamic range of traditional radar receiver.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (14)
1. a microwave motion detecting device, is characterized in that, comprising:
Emitter, launched microwave signal is to space to be measured;
Receiving trap, receives the reflected microwave signal being reflected back by this space to be measured;
Signal processing apparatus, processes this reflected microwave signal that this receiving trap receives, and to judge in this space to be measured whether have disturbance, this signal processing apparatus produces this microwave signal; And
Path switching device, is coupled to this signal processing apparatus and this emitter, this path switching device make this microwave signal multiple transmission paths of process there is different phase shift.
2. microwave motion detecting device according to claim 1, is characterized in that, multiple sensings of those transmission paths do not overlap each other zero point.
3. microwave motion detecting device according to claim 1, is characterized in that, also comprises path switch controller, is coupled to this path switching device, to select one of those transmission paths.
4. microwave motion detecting device according to claim 3, is characterized in that, this path switch controller is closed those transmission paths at part-time.
5. microwave motion detecting device according to claim 1, is characterized in that,
This signal processing apparatus at least comprises double-ended control voltage controlled oscillator, produces this microwave signal;
Relatively this microwave signal and reference signal are to obtain the first control voltage for this signal processing apparatus, and this first controls the external disturbance information that voltage reflects this space to be measured;
The concussion frequency of this double-ended control voltage controlled oscillator is controlled voltage by this first control voltage and second and is determined; And
If being subject to this external disturbance informational influence, this double-ended control voltage controlled oscillator make this first control voltage produce the accurate skew in direct current position, this signal processing apparatus produces the second voltage variable quantity of this second control voltage according to this first first voltage variety of controlling voltage, eliminate this first direct current position standard of controlling voltage and be offset.
6. a microwave motion detecting device, is characterized in that, comprising:
Emitter, launched microwave signal is to space to be measured;
Receiving trap, receives the reflected microwave signal being reflected back by this space to be measured;
Path switching device, is coupled to this receiving trap, this path switching device make this reflected microwave signal multiple RX path of process there is different phase shift; And
Signal processing apparatus, processes this reflected microwave signal that this receiving trap receives, and to judge in this space to be measured whether have disturbance, this signal processing apparatus produces this microwave signal.
7. microwave motion detecting device according to claim 6, is characterized in that, multiple sensings of those RX path do not overlap each other zero point.
8. microwave motion detecting device according to claim 6, is characterized in that, also comprises path switch controller, is coupled to this path switching device, to select one of those RX path.
9. microwave motion detecting device according to claim 6, is characterized in that,
This signal processing apparatus at least comprises double-ended control voltage controlled oscillator, produces this microwave signal;
Relatively this microwave signal and reference signal are to obtain the first control voltage for this signal processing apparatus, and this first controls the external disturbance information that voltage reflects this space to be measured;
The concussion frequency of this double-ended control voltage controlled oscillator is controlled voltage by this first control voltage and second and is determined; And
If being subject to this external disturbance informational influence, this double-ended control voltage controlled oscillator make this first control voltage produce the accurate skew in direct current position, this signal processing apparatus produces the second voltage variable quantity of this second control voltage according to this first first voltage variety of controlling voltage, eliminate this first direct current position standard of controlling voltage and be offset.
10. a microwave motion detecting device, is characterized in that, comprising:
R-T unit, launched microwave signal is space to be measured extremely, and receives the reflected microwave signal being reflected back by this space to be measured;
Signal processing apparatus, processes this reflected microwave signal that this R-T unit receives, and to judge in this space to be measured whether have disturbance, this signal processing apparatus produces this microwave signal; And
Path switching device, is coupled to this signal processing apparatus and this R-T unit, this path switching device make this microwave signal and this reflected microwave signal multiple paths of process there is different phase shift.
11. microwave motion detecting devices according to claim 10, is characterized in that, multiple sensings in those paths do not overlap each other zero point.
12. microwave motion detecting devices according to claim 10, is characterized in that, also comprise path switch controller, are coupled to this path switching device, to select one of those paths.
13. microwave motion detecting devices according to claim 12, is characterized in that, this path switch controller is closed those paths at part-time.
14. microwave motion detecting devices according to claim 10, is characterized in that,
This signal processing apparatus at least comprises double-ended control voltage controlled oscillator, produces this microwave signal;
Relatively this microwave signal and reference signal are to obtain the first control voltage for this signal processing apparatus, and this first controls the external disturbance information that voltage reflects this space to be measured;
The concussion frequency of this double-ended control voltage controlled oscillator is controlled voltage by this first control voltage and second and is determined; And
If being subject to this external disturbance informational influence, this double-ended control voltage controlled oscillator make this first control voltage produce the accurate skew in direct current position, this signal processing apparatus produces the second voltage variable quantity of this second control voltage according to this first first voltage variety of controlling voltage, eliminate this first direct current position standard of controlling voltage and be offset.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101138273 | 2012-10-17 | ||
| TW101138273A TWI480836B (en) | 2012-10-17 | 2012-10-17 | Mocrowave motion sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103777203A true CN103777203A (en) | 2014-05-07 |
| CN103777203B CN103777203B (en) | 2016-05-25 |
Family
ID=50569669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210488286.3A Active CN103777203B (en) | 2012-10-17 | 2012-11-26 | Microwave action detector |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103777203B (en) |
| TW (1) | TWI480836B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108398680A (en) * | 2017-02-07 | 2018-08-14 | 中山大学 | orthogonal self-injection locking radar |
| CN107465410B (en) * | 2016-06-06 | 2020-07-31 | 立积电子股份有限公司 | Sub-sampling motion detector |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI743570B (en) | 2019-10-09 | 2021-10-21 | 國立中山大學 | Multi-target vital sign detector and detection method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03142396A (en) * | 1989-10-30 | 1991-06-18 | Stanley Electric Co Ltd | Object detector |
| CN1646935A (en) * | 2002-03-22 | 2005-07-27 | M/A-Com公司 | Pulse compression radar system for automotive and other commercial applications |
| CN102247146A (en) * | 2010-05-18 | 2011-11-23 | 财团法人工业技术研究院 | Wireless sensing device and method |
| CN102331290A (en) * | 2011-05-19 | 2012-01-25 | 浙江大学 | Method and apparatus for solving zero point problem of non-contact vibration measurement with utilization of phase control |
| CN102356332A (en) * | 2009-04-06 | 2012-02-15 | 康蒂特米克微电子有限公司 | Radar system having arrangements and method for decoupling transmission and reception signals and suppression of interference radiation |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2300463C (en) * | 2000-03-10 | 2009-02-24 | Digital Security Controls Ltd. | Combination microwave passive infrared motion detector with anti-masking evaluation |
| DE102006008513A1 (en) * | 2006-02-23 | 2007-09-06 | Agtatec Ag | Sensor-monitoring device for motor driven wing of automatic door, has evaluation circuit provided for control and/or evaluation of detection signal, and sensors with overlapping area with reference to monitoring area |
-
2012
- 2012-10-17 TW TW101138273A patent/TWI480836B/en active
- 2012-11-26 CN CN201210488286.3A patent/CN103777203B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03142396A (en) * | 1989-10-30 | 1991-06-18 | Stanley Electric Co Ltd | Object detector |
| CN1646935A (en) * | 2002-03-22 | 2005-07-27 | M/A-Com公司 | Pulse compression radar system for automotive and other commercial applications |
| CN102356332A (en) * | 2009-04-06 | 2012-02-15 | 康蒂特米克微电子有限公司 | Radar system having arrangements and method for decoupling transmission and reception signals and suppression of interference radiation |
| CN102247146A (en) * | 2010-05-18 | 2011-11-23 | 财团法人工业技术研究院 | Wireless sensing device and method |
| CN102331290A (en) * | 2011-05-19 | 2012-01-25 | 浙江大学 | Method and apparatus for solving zero point problem of non-contact vibration measurement with utilization of phase control |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107465410B (en) * | 2016-06-06 | 2020-07-31 | 立积电子股份有限公司 | Sub-sampling motion detector |
| CN108398680A (en) * | 2017-02-07 | 2018-08-14 | 中山大学 | orthogonal self-injection locking radar |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI480836B (en) | 2015-04-11 |
| TW201417052A (en) | 2014-05-01 |
| CN103777203B (en) | 2016-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9448053B2 (en) | Microwave motion sensor | |
| EP3070490B1 (en) | Radar system and method with saturation detection and reset | |
| US20180348342A1 (en) | Phase noise measurement in a cascaded radar system | |
| EP2773044B1 (en) | Electronic circuit, radar apparatus, and method of performing self-diagnosis on radar apparatus | |
| US20180212313A1 (en) | Loop antenna with integrated proximity sensing | |
| EP3184040B1 (en) | A method for detecting at least one of a heart rate and a respiratory rate of a subject | |
| US10473753B2 (en) | Fill level measurement device comprising interfering signal detection | |
| US11796636B2 (en) | Radar front end with RF oscillator monitoring | |
| US8754806B2 (en) | Pulse radar receiver | |
| CN103297045A (en) | High sensitivity single antenna FMCW radar | |
| CA2931341C (en) | Digitally compensated phase locked oscillator | |
| CN103777203B (en) | Microwave action detector | |
| US11808837B2 (en) | Method of operating radar sensor systems with time sequenced high pass filters | |
| CN110824493A (en) | Coherent laser radar for improving detection distance by adopting optical phase locking technology | |
| US20110150063A1 (en) | Communication device | |
| PL243124B1 (en) | Digital control-based intelligent automatic frequency control device | |
| JP4390359B2 (en) | FM-CW radar equipment | |
| Lai et al. | Finger gesture sensing and recognition using a Wi-Fi-based passive radar | |
| KR101848729B1 (en) | Fmcw radar with multi-frequency bandwidth and controlling method therefor | |
| CN113777570B (en) | Millimeter wave radar interference testing device and electronic equipment | |
| CN115800996A (en) | Phase-locked loop, radio frequency signal transmitter, radar sensor and electronic equipment | |
| KR20160000279A (en) | Radar sensor and radar apparatus comprising the same for vehicle | |
| JP2004198306A (en) | Ranging device | |
| CN109917366A (en) | Microwave motion sensor | |
| CN218897214U (en) | Phase-locked loop, system, digital chip and radar sensor for quick locking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |