CN205920092U - Set to material that is used for confirming type of material long -rangely and confirmed equipment - Google Patents

Set to material that is used for confirming type of material long -rangely and confirmed equipment Download PDF

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Publication number
CN205920092U
CN205920092U CN201290001362.7U CN201290001362U CN205920092U CN 205920092 U CN205920092 U CN 205920092U CN 201290001362 U CN201290001362 U CN 201290001362U CN 205920092 U CN205920092 U CN 205920092U
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CN
China
Prior art keywords
radio signal
reflection
type
dielectric constant
reflecting
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Expired - Lifetime
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CN201290001362.7U
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Chinese (zh)
Inventor
卡雷尔·彼得·海斯贝特·杰拉
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Siti Asma
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Siti Asma
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/221—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance by investigating the dielectric properties
    • 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
    • G01S13/887—Radar or analogous systems specially adapted for specific applications for detection of concealed objects, e.g. contraband or weapons
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/41—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
    • G01S7/411—Identification of targets based on measurements of radar reflectivity
    • G01S7/412—Identification of targets based on measurements of radar reflectivity based on a comparison between measured values and known or stored values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/023—Solids
    • G01N2291/0235—Plastics; polymers; soft materials, e.g. rubber
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/044—Internal reflections (echoes), e.g. on walls or defects

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electromagnetism (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

Set to material that is used for confirming type of material long -rangely and confirmed equipment, including the transceiver, it is set to, sends reflective material with a radio signal, receive the first reflection through a radio signal of reflective material reflection, send reflective material with the 2nd radio signal, wherein, its type waits that the material of being confirmed is set up between transceiver and reflective material, and wherein the 2nd radio signal runs through its type and treats by the sureness the material, receive the second reflection through the 2nd radio signal of reflective material reflection, processing unit, it is set to, based on a radio signal send and the receipt of first reflection between the time difference, the 2nd radio signal send and the receipt of second reflection between the time difference, the thickness and the velocity of light of material, confirm the dielectric constant of material, and comparing element, it is set to, confirms based on the dielectric constant who determines the type of material.

Description

It is arranged for remotely determining that the material of the type of material determines equipment
Technical field
Present invention relates in general to the detection of the type of material, more specifically, it is related in the case of not contact material To the detection of the type of material, i.e. remotely determine material type.
Background technology
Safety door system can be used in the place of people's gathering, such as railway station, airport, harbour, ball park, football Field, race venue, museum and Art Museum etc..
For example at the safety door on airport etc., people are screened the exit gate institute entering into aircraft by airport security Region.These regions are commonly known as " safety ", " aseptic " and airside.Passenger out enters into from flight If aseptic area is so that get off the plane, they are typically without being reexamined.
Generally, using x-ray, the hand-baggage of user is checked, and in it object shape by visually Checked to detect whether they are harmless.Correspondingly, no matter whether dangerous goods can be detected depends on inspection The technical ability of member.
The explosive detection apparatus being used include x-ray machine and explosive trace detection portal equipment, also referred to as " spray Gas screening machine (puffer machine) ".For example, the U.S. researching and developing new, effectively search and be not allowed to aboard The scanning device of object, but passenger will not be depicted as some very awkward states of undressing of discovery by described equipment.
Nearest development is used to the dispute of the Backscatter x-ray of weapon with passenger for the detection of concealed and explosive Use.Passenger is required close to flat panel and to produce high-definition picture using these devices of Compton scattering.2008 Initial stage technology disclosed in Israel allows to allow them pass through metal detector in the case of not removing the shoes of passenger, such as walks The capable metal by the process needed for door detector in detection shoes or the metal in lower part of the body extremity are insecure.
In most of security systems, as explained above, the accurate type determining material is difficult.Metal detector Only whether detection people carries the article being made of metal.However, the type of the material of article can not possibly be detected on currently practical, I.e. lucite, wood, ferrum, aluminum etc..
Content of the invention
It is an object of the present invention to for providing in the case of there is no actual contact material itself, remotely to detect material Type methods, devices and systems.
In order to realize this target according to a first aspect of the present invention provides the type side for remotely determining material Method, the method comprises the following steps: the first radio signal is sent to reflecting material from transceiver, by described transceiver First reflection of the radio signal being reflected by described reflecting material, is provided between described transceiver and described reflecting material Its type described material to be determined.
Methods described is further comprising the steps of: by the second radio signal from described transceiver by type it described treat by The described material that determines and send to described reflecting material, described in described transceiver is reflected by described reflecting material Radio signal, between the reception by the described transmission based on described first radio signal for the processing unit and described first reflection The reception of the time difference, the described transmission of described second radio signal and described second reflection between the time difference, described material Thickness and the light velocity, to determine the dielectric constant of described material, and by comparing unit based on the described dielectric constant determined To determine the type of described material.
The starting point of inventor is, do not have material type have its own physical features, such as density, acoustic impedance, The speed of dielectric constant and the velocity of sound, i.e. radio signal.The method according to the invention, inventor have found the dielectric determining material The mode of constant, and it is based on this, inventor can determine the type of material with material itself in the case of not contacting.
The method according to the invention can be adapted to be used in safety door system, for example, at the train station, airport, physical culture Field, race venue etc..The present invention can be used on other kinds of field, in such as cyclic process, i.e. the classification of rubbish.Rubbish The classification of rubbish can be based on the shape of the article being comprised, it is also possible to the type of the material of article that comprised as base Plinth.
For example, vial can been separated in bulk stream rubbish.According to the present invention it is possible to the class of the material of detection article Type, such as glass, and these article are opened with the other types material separation in bulk rubbish.
According to the present invention, the transmission of the first radio signal and first reflection reception between the time difference and the second radio The time difference between the reception of the transmission of signal and the second reflection is used as the input of the dielectric constant for determining material.This is Because radio signal runs through the speed of medium with it being associated with the dielectric constant of that material.
By the reflection sending the first radio signal and receive that the first radio signal, calibration measurement is held Row.In this case, the material of type to be determined is placed not between reflecting wall and transceiver.First radio The transmission of signal and by reflecting material, i.e. the time between the reception of the first radio signal reflected of reflecting wall recognized It is set to time calibration measurement.
Hereafter, material is placed between reflecting material and transceiver, and that is, in the sight line of transceiver, and second is wireless The signal of telecommunication is sent to reflecting material by the material of type to be determined.Second radio signal be reflected through reflecting material Extend through the material of type to be determined again, and arrived by transceiver.
The time between the second radio signal and the adjoint reflection receiving it that sends is identified as time Materials Measurement, It is associated with the type of the material being placed.Difference between time Materials Measurement and time calibration measurement is directly with second no The line signal of telecommunication extends through the velocity correlation connection of material with it.
The speed of material and the light velocity are run through with it based on the second radio signal, speed that i.e. radio signal is propagated with it Degree, the dielectric constant of material is determined.As elucidated before, every kind of material type has the physics of their own, unique feature, Such as dielectric constant.By consult and compare in material data table, in internet data storehouse or any other types data base Dielectric constant, the type of material is determined.
In another example of the present invention, time calibration measurement is executed once.Different time Materials Measurements can subsequent quilt Repeat for multiple different types of parameters, and be subsequently based on time calibration measurement and actual, corresponding time material Measure and to determine the dielectric constant of every kind of different kind of material.
In another embodiment in accordance with the invention, material is determined based on the described dielectric constant determined by comparing unit The step of the type of material is included by described dielectric constant and in material data table, the Internet material database and internal material number It is compared according to the dielectric constant that any one in storehouse provides.
In the still another embodiment according to the present invention, the step of described material is provided to include providing substantial orthogonality to exist The described material in the radio signal visual field between described transceiver and described reflecting material.
Other determine that the type of material is based on the thickness being placed on the material between transceiver and reflecting material. If being placed perpendicular to the transverse direction of radio signal on material, accuracy is obtained.Accuracy is obtained , this is because the thickness of material is critically important in the transverse direction of radio signal.If being placed with vertical on material Directly in transverse direction, then the thickness of material is identified relatively uniform.
In another aspect of this invention, the material providing the type for remotely determining material determines equipment, including receipts The machine of sending out, it is arranged to for the first radio signal to be sent to reflecting material；Receive described the via the reflection of described reflecting material First reflection of one radio signal；Second radio signal is sent to described reflecting material, its described type is waited to be determined Described material be arranged between described transceiver and described reflecting material, wherein said second radio signal runs through its class Type described material to be determined and receive the second anti-of described second radio signal via the reflection of described reflecting material Penetrate.
Described material determines that equipment also includes processing unit, and it is arranged to send out based on described in described first radio signal The time difference and reception of described first reflection between, the described transmission of described second radio signal and described second is sent to reflect The time difference between reception, the thickness of described material and the light velocity, to determine the dielectric constant of described material.
Described material determines that equipment even also includes comparing unit, its be arranged to based on the described dielectric constant determined Lai Determine the type of described material.
In still another embodiment of the present invention, described transceiver is further arranged into for successively receiving described Described first reflection of one radio signal and described second reflection of described second radio signal.
In the present invention even another embodiment, described comparing unit be further arranged for by described dielectric constant with The dielectric constant that any one in material data table, the Internet material database and internal material data base provides is compared Relatively.
It is briefly described it should be noted that can be by determining in equipment in material for the above-mentioned present invention referring to Arbitrarily special hardware or software function are executing the method for the present invention.
Above and other feature of the present invention and benefit will be well understood by following description and pass through institute's attaching figure Illustrated well.In the accompanying drawings, identical reference marker refers to equivalent part or executes function that be equal to or comparable Or the part of operation.
Brief description
Fig. 1 is the schematic diagram of the measurement apparatus according to the present invention.
Fig. 2 is the schematic diagram of the method for the type of the determination material according to the present invention.
Fig. 3 is the schematic diagram of the example of the mathematical derivation of the basic conception of the present invention.
Specific embodiment
Fig. 1 is according to the schematic diagram of the measurement apparatus 1 of the present invention.Measurement apparatus 1 are a kind of following devices, and it is used for example in reality Test in room to support the method for remotely determining the type of material 21.In the first example, material 21 is not placed on instead Penetrate between material 29 and antenna 13.In this case, time calibration measurement can be performed.
Antenna is further coupled to material by the outside port 7 that material determines equipment 11 and is determined equipment 11.More specifically For, antenna 13 is coupled to the transceiver 5 that described material determines equipment 11.Transceiver is set to described antenna 13 Orienting reflex material 29 is sending and receiving radio signal.
Material determines that equipment 11 is further equipped with processing unit 3, and this processing unit 3 is arranged to based on the first radio Between the reception of the time difference between the reception of the transmission of signal and the first reflection, the transmission of the second radio signal and the second reflection The time difference and the thickness of material 21 and the light velocity determining the dielectric constant of material 21.
Comparing unit 9 is also included material and determines in equipment 11, and it is arranged to based on a determination that the dielectric of the material 21 going out Constant is determining the type of material.
In the first example, transceiver 5 is arranged in the situation that there is not material 21 between antenna 13 and reflecting material 29 Under, for sending the first radio signal to reflecting material and receiving the first radio signal via reflecting material 29 reflection First reflection.
Send the first radio signal and receive it first reflection between the time difference be identified as time calibration measurement.
In the second example, material 21 is arranged between antenna 13 and reflecting material 29.Transceiver is arranged towards instead Penetrate material 29 to send the second radio signal 17.The speed that second radio signal 17 traverses orienting reflex material 29 reaches The light velocity.When material 21 is placed between reflecting material 29 and antenna 13, the second radio signal 17 is clashed into and is run through this material Material.It is not equal to the second of outside material 21 (i.e. in outdoor) in the internal speed 23 of the second radio signal 17 in material 21 The speed of radio signal 17.
The speed 23 that second radio signal 17 runs through material 21 is related to the dielectric constant of material 21.Dielectric constant, i.e. Dielectric constant is the measurement of the speed 23 traversing material 21 for the second radio signal.In other words, by using material 21 Dielectric constant can determine that radio signal traverses the speed of material 21.
After the second radio signal 17 traverses material 21, the second radio signal 25 out is again with the about light velocity Traverse orienting reflex material 29.The second radio signal 25 that reflecting material is reflected by the second reflection 27.Second reflection 27 subsequently again at different rates 19 traversing material 21, and the second reflection 15 out is subsequently received by antenna 13, This with the first radio signal 17 to traverse path similar.
Send the second radio signal 17 and the time difference of its second 15 times of reflection of reception is identified as time material and surveys Amount.
Processing unit 3 is subsequently arranged for determining the time difference between time calibration measurement and time Materials Measurement.This The time difference is that the speed traversed by material 21 for the second radio signal 17 and its second reflection 27 (uses reference marker 19 Represent) measurement.
Material determines that the processing unit 3 of equipment 11 is subsequently set based on the above-mentioned time difference, the thickness d of material and light Speed is determining the dielectric constant of material.
The type of material once the dielectric constant of material 21 is determined, then can be determined by comparing unit 9.
In doing so, comparing unit can be arranged for the dielectric constant of acquisition, i.e. being determined of material 21 Dielectric constant is compared with reference table given below.Herein, the type of material is indicated in first row, and dielectric constant Minima and maximum given respectively secondary series and the 3rd row in.For example, the type of material is minimum Jie of " succinum " Electric constant is 2.6, and the maximum dielectric constant of " succinum " is 2.7.
Air 1 1
Succinum 2.6 2.7
Asbestos fibre 3.1 4.8
Bakelite 5 22
Barium metatitanate. 100 1250
Cera Flava 2.4 2.8
Linen 4 4
Carbon tetrachloride 2.17 2.17
Celluloid 4 4
Cellulose acetate 2.9 4.5
Dull coal 4.7 5.1
Hard rubber 2.7 2.7
Epoxy resin 3.4 3.7
Ethanol 6.5 25
Fig. 2 is the schematic diagram of the method for the type of the determination material according to the present invention.
Method starts 51 in using time calibration measurement 53.It is required that the first radio signal is sent by antenna To reflecting material, and the reflection of the first radio signal is subsequently received by the antenna.
Send the time difference between the first radio signal and the reflection receiving it be subsequently identified as time calibration measurement, should Event calibration measurement is used in the last stages of the dielectric constant for determining material.
In following step, the method according to the invention includes between reflecting material and antenna, i.e. regarding in antenna Material described in 55 is provided on line.
Next, to be executed with time Materials Measurement 57 step with the similarity measure of time calibration measurement 53, but at this In situation, material is placed in the sight line of antenna.Therefore, the radio signal being sent by antenna and the reflection receiving are run through Material.
Time delay is subsequently determined 59, the time calibration measurement determined in step 53 and determining in step 57 The time difference between time Materials Measurement.
Based on a determination that going out 59 time delay, dielectric constant is determined 61, and it is also with the thickness of the material of offer and the light velocity Based on.
In order to determine the type of the material of offer, dielectric constant is compared with the such as reference table similar to table 1.As Final step, the type 65 of material is based on reference table 1 and determines.
Next, when the type of material is determined, the method according to the invention terminates 67.
Fig. 3 is the schematic diagram of the example of the mathematical derivation of the basic conception of the present invention.
Herein it is well known that the DIELECTRIC CONSTANT ε of materialmatIt is with light velocity c0, time Materials Measurement tm, time calibration survey Amount t0Based on the thickness d of material.
Mathematical approach for determining the correctness of Fig. 3 is as follows.
t0=2l/c0
Wherein l is the distance between antenna and reflecting material, referring to Fig. 1.
tm=(2l-2d)/c0+2d/cm
Wherein cmPass through the speed of material for radio signal.
c m = c 0 / ϵ
Follow three formula above, the equation of Fig. 3 can be derived out.
Those skilled in the art are it should be noted that the disclosed feature related to the method improved can be employed In specific hardware, software or a combination thereof.
Invention is not restricted to described embodiment, but can be using in spirit and scope of the appended claims Modifications and changes are instructed.

Claims (3)

1. it is arranged for remotely determining that the material of the type of material determines equipment, comprising:
Transceiver, it is arranged to,
First radio signal is sent to reflecting material；
Receive the first reflection of described first radio signal reflecting by described reflecting material；
Second radio signal is sent to described reflecting material, wherein, its described type described material to be determined is set Put between described transceiver and described reflecting material, wherein said second radio signal runs through its described type to be waited to be determined Described material；
Receive the second reflection of described second radio signal reflecting by described reflecting material；
Processing unit, it is arranged to,
The time difference between described transmission based on described first radio signal and the reception of described first reflection, described second nothing The time difference between the reception of the described transmission of the line signal of telecommunication and described second reflection, the thickness of described material and the light velocity, come really The dielectric constant of fixed described material；And
Comparing unit, it is arranged to,
Determine the type of described material based on the described dielectric constant determined.
2. material according to claim 1 determines equipment, and wherein said transceiver is further arranged into for successively Receive described first reflection of described first radio signal and described second reflection of described second radio signal.
3. material according to claim 1 and 2 determines equipment, and wherein said comparing unit is further arranged for will be described Jie that dielectric constant is provided with any one in material data table, the Internet material database and internal material data base Electric constant is compared.
CN201290001362.7U 2011-09-16 2012-09-17 Set to material that is used for confirming type of material long -rangely and confirmed equipment Expired - Lifetime CN205920092U (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1039057A NL1039057C2 (en) 2011-09-16 2011-09-16 METHOD AND DEVICE FOR A CONTACTLESS RECOGNITION SYSTEM OF A MATERIAL.
PCT/NL2012/050652 WO2013039400A1 (en) 2011-09-16 2012-09-17 Remotely determining a type of material

Publications (1)

Publication Number Publication Date
CN205920092U true CN205920092U (en) 2017-02-01

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CN (1) CN205920092U (en)
NL (1) NL1039057C2 (en)
WO (1) WO2013039400A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109632953A (en) * 2018-11-20 2019-04-16 葛云艳 A kind of bearing ball inspection of semifinished product device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016080403A (en) * 2014-10-10 2016-05-16 国立大学法人大阪大学 Liquid inspection device and liquid inspection method

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Publication number Priority date Publication date Assignee Title
SU480010A1 (en) * 1973-08-07 1975-08-05 Научно-Исследовательский Институт Мостов Ленинградского Ордена Ленина Института Железнодорожного Транспорта Им.Академика В.Н.Образцова The method of recording the results of ultrasonic flaw detection products
US6950054B1 (en) * 2001-12-03 2005-09-27 Cyterra Corporation Handheld radar frequency scanner for concealed object detection
DE102008009753B3 (en) * 2008-02-18 2009-09-10 Yara International Asa Method for contactless determination of biomass and morphological parameter of plant populations, involves treating plants of populations with ultrasound by releasing acoustic pulses from ultrasound source
EP2304476B1 (en) * 2008-07-01 2019-01-09 Smiths Detection Ireland Limited Identification of potential threat materials using active electromagnetic waves

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109632953A (en) * 2018-11-20 2019-04-16 葛云艳 A kind of bearing ball inspection of semifinished product device
CN109632953B (en) * 2018-11-20 2021-04-23 博泰智能装备(广东)有限公司 Bearing ball semi-manufactured goods verifying attachment

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WO2013039400A1 (en) 2013-03-21

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