CN201293836Y - Ultra-wideband detector for searching and rescuing beings - Google Patents
Ultra-wideband detector for searching and rescuing beings Download PDFInfo
- Publication number
- CN201293836Y CN201293836Y CNU2008201593184U CN200820159318U CN201293836Y CN 201293836 Y CN201293836 Y CN 201293836Y CN U2008201593184 U CNU2008201593184 U CN U2008201593184U CN 200820159318 U CN200820159318 U CN 200820159318U CN 201293836 Y CN201293836 Y CN 201293836Y
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Abstract
An ultra wide band life rescue detecting instrument comprises a master control system, an ultra wide band impulse transmitter, a receiver and a display unit, wherein the ultra wide band impulse transmitter comprises a delay control unit, an ultra wide band impulse source array, an ultra wide band emitting antenna array and a digital fine control delay wire, wherein the delay control unit is connected with an output end of the master control system, the ultra wide band impulse source array performs radiation and time-domain beam scanning to observation space via the emitting antenna array, the receiver comprises an ultra wide band receiving antenna, a range gate generating unit, a range gate delay unit and a high-speed digital collecting unit, ultra wide band pulse echo is received by the ultra wide band receiving antenna, after the range gate generated by the range gate generating unit is gated, the high-speed digital collecting unit performs echo collection and finally transmits data to the master control system, thereby imaging and displaying by the display unit after obtaining a final result. The utility model has the advantages of wide application range, strong anti-interference capacity, fast detecting speed, fine reliability, high accuracy and the like.
Description
Technical field
The utility model is mainly concerned with life and searches and rescues the detecting devices field, refers in particular to a kind of ultra broadband life and searches and rescues detection instrument, and it is applicable to that mainly high-risk places such as the scene of a fire, smog, buildings ruins, earthquake relief carry out life detection, location fast and effectively.
Background technology
In scenes of the accident such as earthquake, fire, buildings ruins, life entity is surveyed quickly and accurately, located, be to realize, the effectively basic guarantee of relief timely to the existence personnel.In the market life is searched and rescued the detection instrument product, and mainly can be divided into audio frequency life-detection instrument, optics life-detection instrument, infrared life-detection instrument several.These life saving systems are except the mobile message that can't penetrate the barrier detection life entity, most of product requires comparatively harsh to the rescue environmental baseline, for example optics, ir imaging system, the scope of detecting is very limited and only just can report to the police after the person in distress enters the visual field of camera lens or sensor.And be subject to the noise effect of operating distance and ruins periphery greatly based on the detecting system of audio frequency, for the search and rescue under the Strong Noise Jamming Environment, the mistake alarm probability is big, and job stability is relatively poor, and needs the person in distress to sound or the regular sound that impacts clear-headedly.
The utility model content
Problem to be solved in the utility model just is: at the technical matters that prior art exists, the utility model provide a kind of applied widely, antijamming capability is strong, speed of detection is fast, good reliability, ultra broadband life search and rescue detection instrument that degree of accuracy is high.
For solving the problems of the technologies described above, the solution that the utility model proposes is: a kind of ultra broadband life is searched and rescued detection instrument, it is characterized in that: it comprises master control system, the ultra-wideband pulse transmitter, receiver and display unit, described ultra-wideband pulse transmitter comprises time-delay control module and the ultra-wideband pulse source array that links to each other with the master control system output terminal, ultra broadband transmitting antenna array and the smart control of numeral lag line, ultra-wideband pulse source array is according to through transmitting antenna array observation space being carried out radiation and time-domain wave beam scanning by the control signal of master control system, described receiver comprises the ultra broadband receiving antenna, the range gate generation unit, range gate delay unit and high-speed figure collecting unit, the ultra-wideband pulse echo receives through the ultra broadband receiving antenna, after the range-gate selection by the generation of range gate generation unit, carry out echo acquirement by the high-speed figure collecting unit, data transmission is to master control system the most at last, butt joint is regained wave datum and is carried out target detection in conjunction with related algorithm, the location, follow the tracks of, and show by the display unit imaging.
Described ultra-wideband pulse source array is made up of more than one ultra-wideband pulse source, the ultra broadband transmitting antenna array is made up of an above ultra broadband emitting antenna, and the smart control of numeral lag line links to each other successively and constitutes set of pulses transmitter unit with a ultra-wideband pulse source, a ultra broadband emitting antenna.
Compared with prior art, advantage of the present utility model just is:
1, ultra broadband life of the present utility model is searched and rescued detection instrument, can be widely used in high-risk places such as buildings ruins, the scene of a fire, earthquake relief, carries out life detection, positioning operation fast and effectively.Compare with current employing optics, similar products infrared, Audiotechnica, have the boring of need not, need not advantages such as cable laying, anti-very noisy, all weather operations;
2, ultra broadband life of the present utility model is searched and rescued detection instrument, it adopts radio frequency inhibition technology such as the narrow ripple door of hardware, time domain coherent accumulation, intelligent waveform recognition and soft ripple door are provided with, make this money life-detection instrument not only have the ability of natural anti-audio frequency very noisy, also have the ability of good radio frequency inhibition-anti-radio noise;
3, ultra broadband life of the present utility model is searched and rescued detection instrument, realized open loop system time-domain wave beam scanning technique, this makes and need not by radar servo system mechanical rotation aerial array, just can realize the quick scanning on all directions in the target area, make things convenient for target search, accelerate searching process.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the circuit theory synoptic diagram of transmitter ultra-wideband pulse source module in the utility model;
Fig. 3 is a time-delay control module and the smart circuit frame synoptic diagram of controlling delay line of numeral in the utility model;
Fig. 4 is the circuit theory synoptic diagram of FPGA in the utility model;
The schematic flow sheet of the echo character vector extraction algorithm that Fig. 5 is in the utility model to be adopted;
The schematic flow sheet of the echo coherent accumulation double threshold identification detection algorithm that Fig. 6 is in the utility model to be adopted.
Marginal data
1, master control system 2, time-delay control module
3, the smart control of numeral lag line 4, ultra-wideband pulse source
5, ultra broadband emitting antenna 6, range gate delay unit
7, range gate generation unit 8, ultra broadband receiving antenna
9, high-speed figure collecting unit 10, display unit
Embodiment
Below with reference to the drawings and specific embodiments the utility model is described in further details.
As shown in Figure 1, ultra broadband life of the present utility model is searched and rescued detection instrument, it is based on UWB Impulse radar detection principle, strong penetrability, the high resolution characteristic of utilizing ultra-wideband pulse to have, in conjunction with radio frequency inhibition-Back end data process nuclear center algorithms such as anti-very noisy, realization is under the high-risk place strong noise backgrounds such as the scene of a fire, smog, buildings ruins, earthquake relief, the detection fast and effectively of life entity, location.This detection instrument comprises master control system 1, the ultra-wideband pulse transmitter, receiver and display unit 10, the ultra-wideband pulse transmitter comprises time-delay control module 2 and the ultra-wideband pulse source array that links to each other with master control system 1 output terminal, ultra broadband transmitting antenna array and the smart control of numeral lag line, ultra-wideband pulse source array is according to through transmitting antenna array observation space being carried out radiation and time-domain wave beam scanning by the control signal of master control system 1, and utilization time-delay control module 2 and the smart lag line 3 of controlling of numeral, regulate the triggering in each ultra-wideband pulse source 4 difference sequence when faint, guarantee that pulse source array output pulse is on the predetermined direction of space, trigger the time difference and offset fully with mutual wave path-difference, thereby to realizing time-domain wave beam scanning in the certain angle scope of space.Receiver comprises ultra broadband receiving antenna 8, range gate generation unit 7, range gate delay unit 6 and high-speed figure collecting unit 9, the ultra-wideband pulse echo receives through ultra broadband receiving antenna 8, after the range-gate selection by 7 generations of range gate generation unit, carry out echo acquirement by high-speed figure collecting unit 9, data transmission is to master control system 1 the most at last, butt joint is regained wave datum and is carried out target detection, location, tracking in conjunction with related algorithm, and is shown by display unit 10 imagings.Display unit 10 is mainly finished the real-time demonstration to target search, result of detection.In the present embodiment, ultra-wideband pulse source array is made up of more than one ultra-wideband pulse source 4, the ultra broadband transmitting antenna array is made up of an above ultra broadband emitting antenna 5, the smart control of numeral lag line and a ultra-wideband pulse source 4, a ultra broadband emitting antenna 5 formation set of pulses transmitter unit that links to each other successively.Master control system 1 is connected by data cable with ultra-wideband pulse transmitter, receiver, provide accurate delay steering order to the ultra-wideband pulse transmitter, and butt joint regains wave datum and carries out target detection, location, tracking in conjunction with related algorithm, and does real-time two-dimensional/three-dimensional imaging and show.Master control system 1 is mainly used to provide accurate delay steering order to the ultra-wideband pulse transmitter, and butt joint regains wave datum and carry out target detection, location, tracking in conjunction with related algorithm, and imaging shows.Core algorithm such as adopt that wherein time domain coherent accumulation, intelligent waveform recognition and soft ripple door are provided with has improved the radio frequency inhibition-anti-very noisy ability of native system greatly.Comprise in addition: base postpones that grid dividing detects and the tracking scheduling algorithm with imaging, moving-target in computing, the search of ripple door, the search coverage during triggering between time-domain wave beam when scanning array antenna unit.
In the present embodiment, ultra broadband emitting antenna 5, ultra broadband receiving antenna 8 all adopt the flat helical antenna form; The smart control of numeral lag line 3 adopts the Maxim DS1020-15 of company, DS1020-200 programmable delay line, and stepping accuracy is respectively 0.15ns, 2.0ns, 8 of stepping figure places.The CompuScope 85GA/D capture card of the Canadian Gage of high-speed figure collecting unit 9 employings company.Time-delay control module 2 among Fig. 1, range gate delay unit 6, range gate generation unit 7 can be integrated on the FPGA circuit board and finish.Referring to Fig. 2, circuit diagram for ultra-wideband pulse source 4, adopt avalanche transistor T1-T5 to constitute in the circuit and owe capacity MARX circuit, adopt capacitor C 1-C5 as charge member in the MARX circuit, the capacity mise-a-la-masse method of owing does not require that lotus that each electric capacity charges all can discharge to end load in snowslide cascade process, only require on the contrary can be maintained to next stage or what snowslide pipe snowslide time gets final product.So electric capacity value value size in the conventional MARX circuit.With avalanche transistor T0 is that the prepulsing circuit of core then provides the forward position precipitous mistake trigger pip, and the MARX circuit that avalanche transistor T1-T5 is constituted triggers, and finally realizes waveform high stable, time delay height, accurate controlled UWB Impulse source unit.Referring to Fig. 3, be the circuit frame structural representation of time-delay control module 2 in the utility model with the smart control of numeral delay line 3, time-delay control module 2 is made up of RS232 interface chip MAX232, single-chip microcomputer, FPGA, input buffer, clock, program ROM; The smart control of numeral delay line 3 drives 1～8 by fine tuning delay line 1～8, coarse adjustment delay line 1～8 and output and constitutes.When synthetic as the open loop system pulse source array time-domain wave beam trigger pip with scanning when this circuit is used, single-chip microcomputer communicates by RS232 interface chip MAX232 and computing machine, and send the steering order of computing machine to FPGA, FPGA calculates the amount of delay of each passage needs according to steering order, and realizes by control coarse adjustment delay line, fine tuning delay line.Fig. 4 has provided this piece FPGA circuit diagram, and fpga chip is selected model for use: the Spartan-3 of Xilinx company.Total trigger pip of sending for master control system of pin 5 wherein.Pin 17 is a collecting unit range gate signal.Pin 25-pin 28 is controlled the lag line trigger pip for the numeral essence of transponder pulse source each branch road of array that the time-delay control module provides.All logic controls, sequential control are all in the inner realization of fpga chip.
In real work, the using method that the utility model ultra broadband life is collected detection instrument is as follows:
1, will search and rescue instrument Sensor section (comprising transmitter and receiver, integrated in a cabinet encapsulation) and be positioned on the band detection ruins, and utilize optical fiber Sensor section and master control system 1 interconnection.
2, after the start, master control system 1 enters operation interface automatically, after self check is normal, just begins the reconnaissance probe to search coverage automatically.
If 3 successfully find life entity, will on display unit 10, the hot spot form with round dot indicate, target is followed the tracks of also alarm sound a buzzer.Do not retrieve life entity, then driftlessness shows on the display unit 10, and the rescue worker can be transferred to sensor the next place of searching and rescuing.
According to the fundamental theorem of time-domain wave beam scanning, promptly do not consider the sub-directional diagram of element antenna, ultra broadband N unit linear array directional diagram wave beam will be scanned up to normal and become θ angle direction, the pulse of n unit and N the unit emission time difference to be
Δ t
N-NThe dsin of=-(N-n) θ/c (formula 1)
Wherein, Δ t
N-NRepresent of the time-delay of pulse when emission base of n unit than N unit; N represents array number; D represents array element distance; θ represents that the scanning be scheduled to points to; C represents the light velocity.
Promptly the time base of n unit shifts to an earlier date (N-n) dsin θ/c than N unit.
Fig. 5 is by being adopted echo character vector extraction algorithm process flow diagram in the utility model master control system 1.In conjunction with the basic definition of each characteristic quantity, such as information such as the Y-PSNR of single echo, group peak number order, group peak separations, utilize computerese to carry out arthmetic statement, based on echo time domain acquired signal, extract characteristic component.Above-mentioned each characteristic component is united, can construct the echo character vector.Further eigenvector is extracted core algorithm, generate dynamic link library, be integrated in the radar system function software.Simultaneously, algorithm also has the intelligence learning ability, carries out intelligence training based on experimental data, finally obtains the statistical value space distribution scope of each characteristic component of general objectives echo, has further improved algorithm identified and has detected the probability of success.
Fig. 6 is by being adopted echo coherent accumulation double threshold identification detection algorithm process flow diagram in the utility model master control system 1.Finish echo by the unitary sampling sample and detect, because impulse radar return signal to noise ratio (S/N ratio) is lower, for effectively reducing the mistake alarm probability, the utility model adopts the coherent accumulation double threshold detection method.Detect step with reference to shown in Figure 4.At first carry out eigenvector Threshold detection, detection threshold Λ based on the single sample
1Be vector form, note is done
According to same step, N sample carried out duplicate detection after, to successfully detecting number of times k and successfully detecting number of times thresholding Λ
2Compare, finally make the interpretation of no signal.This double threshold detection algorithm to target echo, be the feature of spurious signals such as real goal signal and Radio frequency interference (RFI) repeatedly to be added up study and judge in essence, nature has certain effect to radio frequency, squelch, thereby can improve signal to noise ratio (S/N ratio) and target detection probability preferably, effectively reduce the mistake alarm probability.Obviously,, extract eigenvector, have k sample characteristics vector to surpass detection threshold Λ N independent sample of continuous sampling
1Probability P (k) satisfy binomial distribution:
Wherein, P surpasses detection threshold Λ for the unitary sampling eigenvector
1Probability;
The second detection threshold Λ
2For K/N single sample surpasses detection threshold Λ
1Like this, finally the identification of coherent accumulation double threshold detects detection probability P
dWith false-alarm probability P
FaBe respectively:
Wherein, P
D1The expression single detects probability of detection; P
Fa1The expression single detects false-alarm probability.
In addition, the employing that method is set etc. of the narrow ripple door of hardware, time domain coherent accumulation, intelligent waveform recognition and soft ripple door has been played further inhibition effect for the strong radio noise in the sample window.
Because the spectrum distribution of UWB radar signal in the electromagnetic wave frequency range, has natural immunity to the very noisy interference of rescuing sound wave section under the environment.But simultaneously, ULTRA-WIDEBAND RADAR receiver relative bandwidth is bigger, and spacing wireless electric signal and echoed signal might enter receiver simultaneously, constitutes Radio frequency interference (RFI).The utility model adopts core technologies such as the narrow ripple door of hardware, time domain coherent accumulation, eigenvector extraction, double threshold detection, intelligent waveform recognition and soft ripple door are provided with, and has improved the radio frequency anti-noise ability of native system greatly.
The above only is a preferred implementation of the present utility model, and protection domain of the present utility model also not only is confined to the foregoing description, and all technical schemes that belongs under the utility model thinking all belong to protection domain of the present utility model.Should be pointed out that for those skilled in the art in the some improvements and modifications that do not break away under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (2)
1, a kind of ultra broadband life is searched and rescued detection instrument, it is characterized in that: it comprises master control system (1), the ultra-wideband pulse transmitter, receiver and display unit (10), described ultra-wideband pulse transmitter comprises time-delay control module (2) and the ultra-wideband pulse source array that links to each other with master control system (1) output terminal, ultra broadband transmitting antenna array and the smart control of numeral lag line, ultra-wideband pulse source array is according to through transmitting antenna array observation space being carried out radiation and time-domain wave beam scanning by the control signal of master control system (1), described receiver comprises ultra broadband receiving antenna (8), range gate generation unit (7), range gate delay unit (6) and high-speed figure collecting unit (9), the ultra-wideband pulse echo receives through ultra broadband receiving antenna (8), after the range-gate selection by range gate generation unit (7) generation, carry out echo acquirement by high-speed figure collecting unit (9), data transmission is to master control system (1) the most at last, butt joint is regained wave datum and is carried out target detection in conjunction with related algorithm, the location, follow the tracks of, and show by display unit (10) imaging.
2, ultra broadband life according to claim 1 is searched and rescued detection instrument, it is characterized in that: described ultra-wideband pulse source array is made up of more than one ultra-wideband pulse source (4), the ultra broadband transmitting antenna array is made up of an above ultra broadband emitting antenna (5), and the smart control of numeral lag line links to each other successively with a ultra-wideband pulse source (4), a ultra broadband emitting antenna (5) and constitutes set of pulses transmitter unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008201593184U CN201293836Y (en) | 2008-11-20 | 2008-11-20 | Ultra-wideband detector for searching and rescuing beings |
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| CNU2008201593184U CN201293836Y (en) | 2008-11-20 | 2008-11-20 | Ultra-wideband detector for searching and rescuing beings |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012055148A1 (en) * | 2010-10-27 | 2012-05-03 | 中国人民解放军第四军医大学 | Multichannel ultra wide band based (uwb-based) radar life detector and positioning method thereof |
| CN102508305A (en) * | 2011-09-29 | 2012-06-20 | 无锡军帅电子科技有限公司 | Ultra wide band radar life detection system and method |
| CN105699961A (en) * | 2016-04-01 | 2016-06-22 | 北方通用电子集团有限公司 | Ultra-wide-band time control array detection device |
| CN107395164A (en) * | 2017-07-10 | 2017-11-24 | 东南大学 | The continuously adjustable Real-time Delay line circuit of high-precision wide band |
| CN108344989A (en) * | 2017-01-24 | 2018-07-31 | 北京朗森基科技发展有限公司 | A kind of radar identifying system with ultra wide band |
| CN109725305A (en) * | 2019-01-02 | 2019-05-07 | 公安部第一研究所 | A kind of ultra wideband radar system of Low Power High Performance |
| CN113661406A (en) * | 2019-04-10 | 2021-11-16 | 株式会社电装 | Radar apparatus |
-
2008
- 2008-11-20 CN CNU2008201593184U patent/CN201293836Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012055148A1 (en) * | 2010-10-27 | 2012-05-03 | 中国人民解放军第四军医大学 | Multichannel ultra wide band based (uwb-based) radar life detector and positioning method thereof |
| CN102508305A (en) * | 2011-09-29 | 2012-06-20 | 无锡军帅电子科技有限公司 | Ultra wide band radar life detection system and method |
| CN105699961A (en) * | 2016-04-01 | 2016-06-22 | 北方通用电子集团有限公司 | Ultra-wide-band time control array detection device |
| CN108344989A (en) * | 2017-01-24 | 2018-07-31 | 北京朗森基科技发展有限公司 | A kind of radar identifying system with ultra wide band |
| CN107395164A (en) * | 2017-07-10 | 2017-11-24 | 东南大学 | The continuously adjustable Real-time Delay line circuit of high-precision wide band |
| CN109725305A (en) * | 2019-01-02 | 2019-05-07 | 公安部第一研究所 | A kind of ultra wideband radar system of Low Power High Performance |
| CN113661406A (en) * | 2019-04-10 | 2021-11-16 | 株式会社电装 | Radar apparatus |
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Owner name: HU'NAN NOVASKY ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER NAME: CHANGSHA NOVASKY ELECTRONIC TECHNOLOGY CO., LTD. |
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Address after: Xu Yuan million office building 203 No. 410003 Hunan province Changsha 31 Avenue 3 floor Patentee after: Hunan NovaSky Electronic Technology Co., Ltd. Address before: 410003 Hunan province Changsha 31 road 203, 4 floor million Xu Yuan Patentee before: Changsha Novasky Electronic Technology Co., Ltd. |
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Denomination of utility model: Ultra-wideband detector for searching and rescuing beings Effective date of registration: 20150417 Granted publication date: 20090819 Pledgee: Bank of Beijing Limited by Share Ltd Changsha branch Pledgor: Hunan NovaSky Electronic Technology Co., Ltd. Registration number: 2015430000008 |
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Date of cancellation: 20161201 Granted publication date: 20090819 Pledgee: Bank of Beijing Limited by Share Ltd Changsha branch Pledgor: Hunan NovaSky Electronic Technology Co., Ltd. Registration number: 2015430000008 |
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