CN102540245A - Device and method for measuring resonance intensity of land mine - Google Patents
Device and method for measuring resonance intensity of land mine Download PDFInfo
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- CN102540245A CN102540245A CN2012100026426A CN201210002642A CN102540245A CN 102540245 A CN102540245 A CN 102540245A CN 2012100026426 A CN2012100026426 A CN 2012100026426A CN 201210002642 A CN201210002642 A CN 201210002642A CN 102540245 A CN102540245 A CN 102540245A
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Abstract
The invention discloses a device for measuring resonance intensity of land mine. The device includes a signal generator, a sound console, a power amplifier and a loudspeaker, wherein the signal generator is connected with the sound console, the power amplifier and the loudspeaker sequentially through leads to form a sound wave emission system. The device further includes a seismic detector, a data acquisition card and a computer, wherein the seismic detector is connected with the computer via the data acquisition card through a data line to form a ground surface vibration speed detection system. A method for measuring resonance intensity of the land mine by using the device particularly comprises the following steps of: 1) detecting and calculating a ground surface vibration speed amplitude-frequency characteristic curve under the condition without the land mine; 2) detecting and calculating a ground surface vibration speed amplitude-frequency characteristic curve under the condition with the land mine; and 3) evaluating a specific value of the two curves in the steps to acquire a ground surface vibration speed relative value amplitude-frequency characteristic curve under the conditions with and without the land mine. By the measuring device and the measuring method, the resonance intensity of the land mine can be measured precisely and quickly.
Description
Technical field
The present invention relates to the underground flexibility of shallow-layer and bury the technical field of detection of thing; Especially a kind of land mine resonance strength meter and measuring method are the measurement mechanism and the method for resonance and the antiresonance effect of land mine in the acoustic sounding nonmetallic mine research face of land vibration effect that sound wave is excited.
Background technology
Up to now, safety, the reliable detection of nonmetallic mine such as plastics are still a global problem.Habitual metal mine detector can only be surveyed metallic mine based on electromagnetic induction principle, and is very poor to the Effect on Detecting of tenor nonmetallic mines such as plastics seldom.To based on imaging techniques such as infrared, GPR, X ray, to be difficult to distinguish treasure trove on the mechanism be that land mine still is rock, brick or other fragment surveying; For neutronic analyse, biological mine detection non-imaging techniques such as (like detecting a mine honeybee, detecting a mine dog and detecting a mine grass etc.), still be in and explore or the application feasibility demonstration stage.
Acoustic resonance Detection Techniques based on land mine mechanical property harmony-earthquake coupling principle have potential application prospect.Land mine is made up of thunder body, air cavity and fuse etc., has to compare the soil that buries wherein higher acoustic compliance or flexibility are arranged, and can constitute " quality-spring " resonator system with the soil of its top.Sound-earthquake coupling is meant when the low-frequency sound wave of frequency below 1kHz incides the face of land by air, can inspire the seismic event of multiple compositions such as fast compressional wave, slow compressional wave and shear wave.Under the effect of the seismic event that sound wave is coupled; Complicated resonance and antiresonance phenomenon can take place in " quality-spring " resonator system that " soil-land mine " constitutes; This resonance and antiresonance can strengthen and weaken the face of land vibration that sound wave excites respectively, show as, the ratio of the face of land vibration velocity when no land mine buries is respectively greater than 1 with less than 1.Present acoustic resonance detecting a mine device lacks the utilization to the land mine antiresonance mechanism of action, causes its resonance undercapacity demonstrating fully the mechanical features of land mine, thus in the mechanism limit raising of sound wave detecting a mine system sensitivity.
A typical land mine resonance strength measurement method should fully utilize land mine resonance and antiresonance effect; Measurement mechanism comprises sound wave emissions system and face of land vibration velocity detection system; And present measuring method has only been utilized the resonance effect of land mine; And having ignored the influence of land mine antiresonance effect, the present invention launches to this gordian technique just.
Summary of the invention
The objective of the invention is to overcome the problem that present sound wave mine-detecting technique can not fully utilize land mine resonance and antiresonance effect, a kind of land mine resonance strength meter and measuring method are provided, can realize high precision, measurement fast land mine resonance intensity.
For achieving the above object, the present invention adopts following technical proposals:
A kind of land mine resonance strength meter comprises signal generator, sound console, power amplifier, loudspeaker, and said signal generator connects said sound console, said power amplifier and said loudspeaker successively through lead, the sound wave emissions system of formation; This device also comprises seismoreceiver, data collecting card and computing machine, and said seismoreceiver is connected the face of land vibration velocity detection system of formation through data line with said computing machine through said data collecting card.
A kind of land mine resonance strength measurement method adopts above-mentioned measurement mechanism, and this method practical implementation step is:
1) detects and calculates face of land vibration velocity amplitude-versus-frequency curve under no land mine situation;
2) detection and calculating are having vibration velocity amplitude-versus-frequency curve in the face of land under the land mine situation;
3) two curves of above-mentioned steps are asked ratio, had, the amplitude-versus-frequency curve of no land mine face of land vibration velocity relative value.
Above-mentioned steps 1) detect in and calculating face of land vibration velocity amplitude-versus-frequency curve under no land mine situation, its concrete steps are following:
(1) the said loudspeaker sounding port that makes the sound wave emissions system is over against landscape position to be measured;
(2) make said seismoreceiver be inserted into said landscape position to be measured; The output port of said seismoreceiver is connected to by data line on the input port of said data collecting card, and the output port of said data collecting card is connected to said input end and computer mouth by data line;
(3) said signal generator sends frequency and does
f 0Initial sine wave signal, amplify the back through said sound console and said power amplifier successively and send the sinusoidal sound wave of high strength by said loudspeaker;
(4) said seismoreceiver is measured the face of land vibration velocity of said landscape position to be measured, and by said computer recording;
(5) make the sinusoidal acoustic signals frequency that said signal generator sends increase 1Hz, the frequency of promptly sending sine wave signal for (
f 0+ 1), takes and step (3)-(4) identical step, write down the face of land vibration velocity at said landscape position to be measured place under this frequency acoustic wave excitation;
(6) operation of repeating step (5), be recorded to predeterminated frequency for (
f 0+
N) time the face of land vibration velocity of said landscape position to be measured, and in said computing machine, obtain and write down institute's geodetic table vibration velocity about exciting sine wave freuqency
f 0,
f 0+ 1,
f 0+ 2 ...,
f 0+
NAmplitude-versus-frequency curve;
Above-mentioned steps 2) detecting in and calculating is having vibration velocity amplitude-versus-frequency curve in the face of land under the land mine situation, and its concrete steps are following:
(1) the mobile described sound wave emissions of integral body system makes said loudspeaker sounding port over against the underground landscape position to be measured that land mine is arranged; Keep the parameter setting of described sound wave emissions system and the height and above-mentioned steps 1 of the said relatively landscape position to be measured of said loudspeaker sounding port) in not have land mine to bury the height of landscape position to be measured relatively under the situation consistent;
(2) make said seismoreceiver be inserted into said landscape position to be measured; Keep couple state and above-mentioned steps 1 with soil) in do not have the couple state of said landscape position to be measured of land mine identical; The output port of said seismoreceiver is connected to by data line on the input port of said data collecting card, and the output port of said data collecting card is connected to said input end and computer mouth by data line;
(3) said signal generator sends frequency and does
f 0Initial sine wave signal, amplify the back through said sound console and said power amplifier successively and send the sinusoidal sound wave of high strength by said loudspeaker;
(4) said seismoreceiver is measured the face of land vibration velocity of said landscape position to be measured, and by said computer recording;
(5) make the sinusoidal acoustic signals frequency that said signal generator sends increase 1Hz, the frequency of promptly sending sine wave signal for (
f 0+ 1), takes and step (3)-(4) identical step, write down the face of land vibration velocity at said landscape position to be measured place under this frequency acoustic wave excitation;
(6) operation of repeating step (5), be recorded to predeterminated frequency for (
f 0+
N) time the face of land vibration velocity of said landscape position to be measured, and in said computing machine, obtain and write down institute's geodetic table vibration velocity about exciting sine wave freuqency
f 0,
f 0+ 1,
f 0+ 2 ...,
f 0+
NAmplitude-versus-frequency curve;
Above-mentioned steps 3) concrete steps are following:
(1) face of land vibration velocity amplitude-versus-frequency curve of the said landscape position to be measured under the face of land vibration velocity amplitude-versus-frequency curve that the said landscape position to be measured under the land mine situation is arranged asked and the no land mine situation is asked ratio, had, the amplitude-versus-frequency curve of no land mine face of land vibration velocity relative value;
(2) the relative value amplitude-versus-frequency curve in the step (1) is carried out numerical value conditioning, greater than 1, the ratio of the function influence that promptly resonates adopts should value itself to amplitude; In less than 1, promptly the ratio of antiresonance function influence adopts the inverse of this value to amplitude, and its mathematic(al) representation is following:
Wherein,
r(
f i) be illustrated in arbitrary stimulating frequency
f iThe amplitude of the amplitude-versus-frequency curve of place before conditioning,
R(
f i) be illustrated in corresponding stimulating frequency
f iThe amplitude of the amplitude-versus-frequency curve of place after conditioning.
(3) amplitude-versus-frequency curve of step (2) after conditioning carried out the area integral on the frequency domain, promptly get the land mine resonance intensity of said landscape position to be measured under the land mine situation, its mathematic(al) representation is following:
Wherein,
MExpression land mine resonance intensity,
f 0With
f NThe lower limit and the upper limit of representing integration respectively.
The present invention has following conspicuous outstanding substantive distinguishing features and remarkable advantage compared with prior art:
The abated effect of the face of land vibration that the antiresonance of land mine is excited sound wave is converted into the consistent humidification of face of land vibration that sound wave is excited with the resonance of land mine; Solved antiresonance to the restricted problem that sound wave detecting a mine system sensitivity improves, the influence of the face of land vibration that the mechanical property that can measure land mine through described land mine resonance intensity detecting device fast, accurately excites sound wave.
Description of drawings
Fig. 1 is sound wave emissions system of the present invention and face of land vibration velocity detection architecture synoptic diagram;
Fig. 2 is a land mine resonance strength measurement method implementation step block diagram;
Fig. 3 detects and calculates face of land vibration velocity amplitude-versus-frequency curve implementation step block diagram under no land mine situation;
Fig. 4 detects and calculates face of land vibration velocity amplitude-versus-frequency curve implementation step block diagram under the land mine situation is being arranged;
Fig. 5 is a land mine resonance intensity detection algorithm principle synoptic diagram.
Embodiment
The preferred embodiments of the present invention combine accompanying drawing to discuss as follows:
As shown in Figure 1; A kind of land mine resonance strength meter; Comprise signal generator 101, sound console 102, power amplifier 103, loudspeaker 104; Said signal generator 101 connects said sound console 102, said power amplifier 103 and said loudspeaker 104, the sound wave emissions system of formation successively through lead; This device also comprises seismoreceiver 105, data collecting card 107 and computing machine 108, and said seismoreceiver 105 is connected the face of land vibration velocity detection system of formation through data line with said computing machine 108 through said data collecting card 107.
AFG3022 random waveform/function generator that the signal generator of using in the present embodiment 101 adopts Tektronix company to produce; The MG8/2FX sound console that sound console 102 adopts Yamaha company to produce; The PA2000 power amplifier that the rich electronics technology company limited of power amplifier 103 employing Hangzhou sound produces; The JB215 specialty audio amplifier that loudspeaker 104 adopts Soundking Group Co.,Ltd to produce; The seismoreceiver that seismoreceiver 105 arrays adopt Weihai ShuangFeng Co., Ltd to produce, the NI-5112 digitizer that the data collecting card of using 107 adopts American National instrument (NI) company limited to produce.
As shown in Figure 2, a kind of land mine resonance strength measurement method adopts above-mentioned measurement mechanism, and this method practical implementation step is:
1) detects and calculates face of land vibration velocity amplitude-versus-frequency curve under no land mine situation;
2) detection and calculating are having vibration velocity amplitude-versus-frequency curve in the face of land under the land mine situation;
3) two curves of above-mentioned steps are asked ratio, had, the amplitude-versus-frequency curve of no land mine face of land vibration velocity relative value.
As shown in Figure 3, detect in the said step 1) and calculating face of land vibration velocity amplitude-versus-frequency curve under no land mine situation, its concrete steps are following:
(1) the said loudspeaker 104 sounding ports that make the sound wave emissions system are over against landscape position 106 to be measured;
(2) make said seismoreceiver 105 be inserted into said landscape position to be measured 106; The output port of said seismoreceiver 105 is connected to by data line on the input port of said data collecting card 107, and the output port of said data collecting card 107 is connected to the input port of said computing machine 108 by data line;
(3) said signal generator 101 sends frequency and does
f 0Initial sine wave signal, amplify the back through said sound console 102 and said power amplifier 103 successively and send the sinusoidal sound wave of high strength by said loudspeaker 104;
(4) said seismoreceiver 105 is measured the face of land vibration velocity of said landscape position 106 to be measured, and by said computing machine 108 records;
(5) make the sinusoidal acoustic signals frequency that said signal generator 101 sends increase 1Hz, the frequency of promptly sending sine wave signal for (
f 0+ 1), takes and step (3)-(4) identical step, write down the face of land vibration velocity at said landscape position to be measured 106 places under this frequency acoustic wave excitation;
(6) operation of repeating step (5), be recorded to predeterminated frequency for (
f 0+
N) time the face of land vibration velocity of landscape position 106 said to be measured, and in said computing machine 108, obtain and write down institute's geodetic table vibration velocity about exciting sine wave freuqency
f 0,
f 0+ 1,
f 0+ 2 ...,
f 0+
NAmplitude-versus-frequency curve;
As shown in Figure 4, said step 2) detecting in and calculating is having vibration velocity amplitude-versus-frequency curve in the face of land under the land mine situation, and its concrete steps are following:
(1) the mobile described sound wave emissions of integral body system makes said loudspeaker 104 sounding ports over against the underground landscape position to be measured 109 that land mine 110 is arranged; Keep the parameter setting of described sound wave emissions system and the height and above-mentioned steps 1 of the said relatively landscape position 109 to be measured of said loudspeaker 104 sounding ports) in not have land mine to bury the height of landscape position 106 to be measured relatively under the situation consistent;
(2) make said seismoreceiver 105 be inserted into said landscape position to be measured 109; Keep couple state and above-mentioned steps 1 with soil) in do not have the couple state of landscape position 106 said to be measured of land mine identical; The output port of said seismoreceiver 105 is connected to by data line on the input port of said data collecting card 107, and the output port of said data collecting card 107 is connected to the input port of said computing machine 108 by data line;
(3) said signal generator 101 sends frequency and does
f 0Initial sine wave signal, amplify the back through said sound console 102 and said power amplifier 103 successively and send the sinusoidal sound wave of high strength by said loudspeaker 104;
(4) said seismoreceiver 105 is measured the face of land vibration velocity of said landscape position 109 to be measured, and by said computing machine 108 records;
(5) make the sinusoidal acoustic signals frequency that said signal generator 101 sends increase 1Hz, the frequency of promptly sending sine wave signal for (
f 0+ 1), takes and step (3)-(4) identical step, write down the face of land vibration velocity at said landscape position to be measured 109 places under this frequency acoustic wave excitation;
(6) operation of repeating step (5), be recorded to predeterminated frequency for (
f 0+
N) time the face of land vibration velocity of landscape position 109 said to be measured, and in said computing machine 108, obtain and write down institute's geodetic table vibration velocity about exciting sine wave freuqency
f 0,
f 0+ 1,
f 0+ 2 ...,
f 0+
NAmplitude-versus-frequency curve;
As shown in Figure 5, said step 3) concrete steps are following:
(1) face of land vibration velocity amplitude-versus-frequency curve of the landscape position 106 said to be measured under the face of land vibration velocity amplitude-versus-frequency curve that the landscape position 109 said to be measured under land mine 110 situation is arranged asked and the no land mine situation is asked ratio, had, the amplitude-versus-frequency curve of no land mine face of land vibration velocity relative value;
(2) the relative value amplitude-versus-frequency curve in the step (1) is carried out numerical value conditioning, greater than 1, the ratio 201 of the function influence that promptly resonates adopts should value itself to amplitude; In less than 1, promptly the ratio 202 of antiresonance function influence adopts the inverse 203 of these values to amplitude, and its mathematic(al) representation is following:
Wherein,
r(
f i) be illustrated in arbitrary stimulating frequency
f iThe amplitude of the amplitude-versus-frequency curve of place before conditioning,
R(
f i) be illustrated in corresponding stimulating frequency
f iThe amplitude of the amplitude-versus-frequency curve of place after conditioning.
(3) amplitude-versus-frequency curve of step (2) after conditioning carried out the area integral on the frequency domain, promptly get the land mine resonance intensity of said landscape position 109 to be measured under land mine 110 situation, its mathematic(al) representation is following:
Wherein,
MExpression land mine resonance intensity,
f 0With
f NThe lower limit and the upper limit of representing integration respectively.
Claims (6)
1. land mine resonance strength meter; It is characterized in that; Comprise signal generator (101), sound console (102), power amplifier (103), loudspeaker (104); Said signal generator (101) connects said sound console (102), said power amplifier (103) and said loudspeaker (104), the sound wave emissions system of formation successively through lead; This device also comprises seismoreceiver (105), data collecting card (107) and computing machine (108); Said seismoreceiver (105) is connected the face of land vibration velocity detection system of formation through data line with said computing machine (108) through said data collecting card (107).
2.2. a land mine resonance strength measurement method adopts measurement mechanism as claimed in claim 1, it is characterized in that, this method practical implementation step is:
1) detects and calculates face of land vibration velocity amplitude-versus-frequency curve under no land mine situation;
2) detection and calculating are having vibration velocity amplitude-versus-frequency curve in the face of land under the land mine situation;
3) two curves of above-mentioned steps are asked ratio, had, the amplitude-versus-frequency curve of no land mine face of land vibration velocity relative value.
3. a kind of land mine resonance strength measurement method according to claim 2 is characterized in that, detects in the said step 1) and calculating face of land vibration velocity amplitude-versus-frequency curve under no land mine situation, and its concrete steps are following:
(1) said loudspeaker (104) the sounding port that makes the sound wave emissions system is over against landscape position to be measured (106);
(2) make said seismoreceiver (105) be inserted into said landscape position to be measured (106); The output port of said seismoreceiver (105) is connected to by data line on the input port of said data collecting card (107), and the output port of said data collecting card (107) is connected to the input port of said computing machine (108) by data line;
(3) said signal generator (101) sends frequency and does
f 0Initial sine wave signal, amplify the back through said sound console (102) and said power amplifier (103) successively and send the sinusoidal sound wave of high strength by said loudspeaker (104);
(4) said seismoreceiver (105) is measured the face of land vibration velocity of said landscape position to be measured (106), and by said computing machine (108) record;
(5) make the sinusoidal acoustic signals frequency that said signal generator (101) sends increase 1Hz, the frequency of promptly sending sine wave signal for (
f 0+ 1), takes and step (3)-(4) identical step, write down the face of land vibration velocity that said landscape position to be measured (106) is located under this frequency acoustic wave excitation;
(6) operation of repeating step (5), be recorded to predeterminated frequency for (
f 0+
N) time the face of land vibration velocity of landscape position said to be measured (106), and in said computing machine (108), obtain and write down institute's geodetic table vibration velocity about exciting sine wave freuqency
f 0,
f 0+ 1,
f 0+ 2 ...,
f 0+
NAmplitude-versus-frequency curve.
4.4. a kind of land mine resonance strength measurement method according to claim 2 is characterized in that said step 2) in detect and calculate vibration velocity amplitude-versus-frequency curve in the face of land under the land mine situation is being arranged, its concrete steps are following:
(1) the mobile described sound wave emissions of integral body system makes said loudspeaker (104) sounding port over against the underground landscape position to be measured (109) that land mine (110) is arranged; Keep the parameter setting of described sound wave emissions system and the height and above-mentioned steps 1 of the said relatively landscape position to be measured of said loudspeaker (104) sounding port (109)) in not have land mine to bury the height of landscape position to be measured relatively (106) under the situation consistent;
(2) make said seismoreceiver (105) be inserted into said landscape position to be measured (109); Keep couple state and above-mentioned steps 1 with soil) in do not have the couple state of landscape position said to be measured (106) of land mine identical; The output port of said seismoreceiver (105) is connected to by data line on the input port of said data collecting card (107), and the output port of said data collecting card (107) is connected to the input port of said computing machine (108) by data line;
(3) said signal generator (101) sends frequency and does
f 0Initial sine wave signal, amplify the back through said sound console (102) and said power amplifier (103) successively and send the sinusoidal sound wave of high strength by said loudspeaker (104);
(4) said seismoreceiver (105) is measured the face of land vibration velocity of said landscape position to be measured (109), and by said computing machine (108) record;
(5) make the sinusoidal acoustic signals frequency that said signal generator (101) sends increase 1Hz, the frequency of promptly sending sine wave signal for (
f 0+ 1), takes and step (3)-(4) identical step, write down the face of land vibration velocity that said landscape position to be measured (109) is located under this frequency acoustic wave excitation;
(6) operation of repeating step (5), be recorded to predeterminated frequency for (
f 0+
N) time the face of land vibration velocity of landscape position said to be measured (109), and in said computing machine (108), obtain and write down institute's geodetic table vibration velocity about exciting sine wave freuqency
f 0,
f 0+ 1,
f 0+ 2 ...,
f 0+
NAmplitude-versus-frequency curve.
5.5. a kind of land mine resonance strength measurement method according to claim 2 is characterized in that said step 3) concrete steps are following:
(1) face of land vibration velocity amplitude-versus-frequency curve of the landscape position said to be measured (106) under the face of land vibration velocity amplitude-versus-frequency curve that the landscape position said to be measured (109) under land mine (110) situation is arranged asked and the no land mine situation is asked ratio, had, the amplitude-versus-frequency curve of no land mine face of land vibration velocity relative value;
(2) the relative value amplitude-versus-frequency curve in the step (1) is carried out numerical value conditioning, greater than 1, the ratio (201) of the function influence that promptly resonates adopts should value itself to amplitude; In less than 1, promptly the ratio of antiresonance function influence (202) adopts the inverse (203) of this value to amplitude, and its mathematic(al) representation is following:
Wherein,
r(
f i) be illustrated in arbitrary stimulating frequency
f iThe amplitude of the amplitude-versus-frequency curve of place before conditioning,
R(
f i) be illustrated in corresponding stimulating frequency
f iThe amplitude of the amplitude-versus-frequency curve of place after conditioning.
6. the area integral on the frequency domain is carried out to the amplitude-versus-frequency curve of step (2) after conditioning in (3), promptly gets the land mine resonance intensity of said landscape position to be measured (109) under land mine (110) situation, and its mathematic(al) representation is following:
Wherein,
MExpression land mine resonance intensity,
f 0With
f NThe lower limit and the upper limit of representing integration respectively.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102768363A (en) * | 2012-07-12 | 2012-11-07 | 上海大学 | Vehicle-mounted acoustic-to-seismic coupling detection device |
| CN103018767A (en) * | 2012-12-12 | 2013-04-03 | 上海大学 | Acousto-optical detection device and method for shallow buried objects |
| CN103017888A (en) * | 2012-12-12 | 2013-04-03 | 上海大学 | Landmine inherent frequency acousto-optic measurement device and method |
| CN103995282A (en) * | 2014-05-12 | 2014-08-20 | 上海大学 | Landmine resonance intensity measurement device and method |
| CN103994814A (en) * | 2014-05-12 | 2014-08-20 | 上海大学 | Landmine multi-modal vibration mode measurement device and method |
| CN109752755A (en) * | 2019-02-01 | 2019-05-14 | 常州常工电子科技股份有限公司 | Object detection device and method based on resonance principle |
| CN110133098A (en) * | 2019-04-02 | 2019-08-16 | 中国人民解放军63983部队 | A kind of high precision measuring device and measurement method of land mine sound vibration characteristic |
| CN110261888A (en) * | 2019-04-02 | 2019-09-20 | 上海大学 | A kind of the fast sound-light detection device and detection method of mine |
| JP2021032577A (en) * | 2019-08-16 | 2021-03-01 | 株式会社エム・アイ・ラボ | Earthquake prediction method and earthquake prediction system |
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| CN102768363A (en) * | 2012-07-12 | 2012-11-07 | 上海大学 | Vehicle-mounted acoustic-to-seismic coupling detection device |
| CN102768363B (en) * | 2012-07-12 | 2015-07-01 | 上海大学 | Vehicle-mounted acoustic-to-seismic coupling detection device |
| CN103017888B (en) * | 2012-12-12 | 2014-12-03 | 上海大学 | Landmine inherent frequency acousto-optic measurement device and method |
| CN103018767A (en) * | 2012-12-12 | 2013-04-03 | 上海大学 | Acousto-optical detection device and method for shallow buried objects |
| CN103017888A (en) * | 2012-12-12 | 2013-04-03 | 上海大学 | Landmine inherent frequency acousto-optic measurement device and method |
| CN103995282A (en) * | 2014-05-12 | 2014-08-20 | 上海大学 | Landmine resonance intensity measurement device and method |
| CN103994814A (en) * | 2014-05-12 | 2014-08-20 | 上海大学 | Landmine multi-modal vibration mode measurement device and method |
| CN103994814B (en) * | 2014-05-12 | 2016-04-27 | 上海大学 | The multi-modal vibration shape measurement mechanism of land mine and measuring method |
| CN109752755A (en) * | 2019-02-01 | 2019-05-14 | 常州常工电子科技股份有限公司 | Object detection device and method based on resonance principle |
| CN110133098A (en) * | 2019-04-02 | 2019-08-16 | 中国人民解放军63983部队 | A kind of high precision measuring device and measurement method of land mine sound vibration characteristic |
| CN110261888A (en) * | 2019-04-02 | 2019-09-20 | 上海大学 | A kind of the fast sound-light detection device and detection method of mine |
| JP2021032577A (en) * | 2019-08-16 | 2021-03-01 | 株式会社エム・アイ・ラボ | Earthquake prediction method and earthquake prediction system |
| JP6995381B2 (en) | 2019-08-16 | 2022-01-14 | 株式会社エム・アイ・ラボ | Earthquake prediction method and earthquake prediction system |
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