CN105866176A - Calibration method, test method and system of metal classified detection - Google Patents
Calibration method, test method and system of metal classified detection Download PDFInfo
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Abstract
The invention discloses a calibration method, a test method and a system of metal classified detection. The calibration method of metal classified detection comprises the following steps: a metal calibration object goes through the induction area of the receiving coil of a metal detector; the phase characteristic value T of the metal calibration object corresponding to the receiving coil is obtained; and the phase characteristic value T and component information of the metal calibration object are written into a calibration object phase characteristic sheet in an alarm database. The test method comprises the following steps: a measured object goes through the induction area of the receiving coil of a metal detector; the phase characteristic value R of the measured object is obtained; the calibration object phase characteristic sheet in the alarm database is searched, and whether the phase characteristic value R of the measured object accords with determination conditions in the calibration object phase characteristic sheet or not is determined; and a suspected signal is sent to an alarm module if the phase characteristic value R of the measured object accords with determination conditions in the calibration object phase characteristic sheet. Metal classified detection can be realized through using the calibration method, the test method and the system of metal classified detection, so the inspection time is shortened, and the detection efficiency is improved.
Description
Technical field
The present invention relates to sorting metals field, the scaling method detected in particular to sorting metals and method of testing and system thereof.
Background technology
In the enterprises such as raw material smeltery, Metal Processing Factory, go out for preventing staff from product in factory or raw material being carried in violation of rules and regulations, common metal detection door the most all can be installed.Common metal detection door is in actual use, also can be to belt fastener, key, metal objects on clothes produces sensing, staff carries these every-day objects and can cause warning by metal detection door, and cannot be distinguished by that detected personnel carry because of it is products material or common metal material, so staff must take off and pass through metal detection door by the most all individual's metal objects, such mode detection efficiency is low, and detection degree of accuracy is low.Stand in the angle of enterprise, it is desirable to be able to detect whether staff carries a certain or several forbid that the metal carried is gone out.It addition, in public security protection occasion, it is also desirable to can get rid of and daily carry object, to doubtful iron weapon, as gun, cutter are reported to the police, metal ingredient information cannot be detected by metal detector always.To checking that work brings inconvenience.The purpose of quick security check in the case of large passenger flow cannot be met especially, accordingly, it would be desirable to a kind of new detection method and device solve this problem.
Summary of the invention
The task of the present invention is to overcome metal detector cannot detect metal ingredient information always, it is provided that scaling method, method of testing and the system thereof of a kind of sorting metals detection.For achieving the above object, this patent adopts the following technical scheme that
First aspect, it is provided that the scaling method of a kind of sorting metals detection, it is characterised in that: comprise the following steps:
Metal is demarcated the induction region of the thing receiving coil by metal detector；
Obtain metal and demarcate phase property value T of thing；
Phase property value T, metal are demarcated the demarcation thing phase property table in the composition information write alarm database of thing.
Preferably, described metal demarcates phase property value T of thing is that repetitive measurement is averaged and obtained.
Preferably, further comprising the steps of: datum mark is demarcated the induction region of the thing receiving coil by described metal detector, obtain phase property value Z, phase property value Z is set to phase property datum mark 0.
Preferably, further comprising the steps of: to calculate T-Z, show that metal is demarcated thing and demarcated phase property value t of thing based on datum mark；Phase property value t, metal are demarcated the demarcation thing phase property table in the composition information write alarm database of thing.
Preferably, described metal is demarcated thing and is provided with M, and m metal is demarcated thing phase property value based on datum mark demarcation thing and is expressed as tm, and wherein M, m are greater than the natural number of 1, M >=m.
Preferably, described metal is demarcated thing and is belonged to same class, to maximum, the minima that metal is demarcated the phase property value that thing demarcates thing based on datum mark is set as that this metalloid is demarcated thing and demarcated the phase property value scope of thing based on datum mark.
Preferably, further comprising the steps of: the first datum mark is demarcated the induction region of the thing receiving coil by described metal detector, obtain phase property value S, and the demarcation thing phase property table being written in alarm database or/and demarcate phase property value and the demarcation thing phase property table in the difference Z-S write alarm database of the phase property value of the first datum mark demarcation thing of thing by datum mark.
Preferably, in demarcating thing phase property table, write: red copper and stainless phase property difference are 34 °.
Preferably, further comprising the steps of: according to demarcating in thing phase property table, it is t that the phase property value of datum mark demarcation thing and the first datum mark demarcation difference Z-S of phase property value of thing, metal demarcate thing phase property value based on datum mark demarcation thing, and calculating metal is demarcated thing phase property value t+Z-S based on the first datum mark demarcation thing and writes demarcation thing phase property table.
Preferably, also include the first receiving coil, datum mark is demarcated the thing induction region by the first receiving coil, obtain datum mark and demarcate thing phase property value Y corresponding to the first receiving coil, calculate the first receiving coil and corresponding to correction value Y-Z of described receiving coil and write demarcation thing phase property table.
Preferably, also include the first receiving coil, adjust the phase shifter being connected with the first receiving coil, make metal demarcate the phase property value detected time thing demarcates thing by the first receiving coil by described receiving coil with metal identical.
Second aspect, it is provided that the method for testing of a kind of sorting metals detection, it is characterised in that: comprise the following steps:
By the measured object induction region by the receiving coil of metal detector；
Obtain phase property value R of measured object；
Search the demarcation thing phase property table of alarm database, it is judged that whether phase property value R of measured object meets the decision condition demarcated in thing phase property table；If meeting the decision condition demarcated in thing phase property table, then send doubtful signal to alarm module.
Preferably, described decision condition is: the difference of phase property value R of measured object and demarcation thing phase property table acceptance of the bid earnest phase property value T is within the scope of presetting.
Preferably, described decision condition is: measured object phase property value R-Z based on datum mark demarcation thing is in the range of the phase property value that thing demarcates thing based on datum mark demarcated by measured object metalloid, and Z is the phase property value that datum mark demarcates thing.
Preferably, thing phase property value scope based on datum mark demarcation thing demarcated by described measured object metalloid is to pre-enter in demarcation thing phase property table.
Preferably, described doubtful signal includes that metal demarcates the composition information of thing.
Preferably, further comprising the steps of: after alarm module receives doubtful signal, remind staff to check manually.
The third aspect, it is provided that a kind of sorting metals detection system, the transmitting coil including metal detector and being provided at its inner portion and receiving coil, it is characterised in that: also include phase property acquisition module and alarm database；The phase property value that detects when phase property acquisition module is for obtaining metal measured object by the induction region of the receiving coil of metal detector；Alarm database has demarcation thing phase property table, demarcates thing phase property table for recording phase property value and corresponding metal ingredient information.
Preferably, also including that metal demarcates thing, for metal being demarcated the thing induction region by described receiving coil, obtaining its phase property value T.
Preferably, in described demarcation thing phase property table, record has phase property value T, demarcates the composition information of thing；Phase property value T is that repetitive measurement is averaged and obtained.
Preferably, also include that datum mark demarcates thing, for datum mark being demarcated the thing induction region by described receiving coil, obtaining its phase property value Z and being set to phase property datum mark 0.
Preferably, also include benchmark module, be used for calculating T-Z, show that metal is demarcated thing and demarcated phase property value t of thing based on datum mark；Demarcating in described alarm database has phase property value t, the composition information of metal demarcation thing in thing phase property table.
Preferably, described metal is demarcated thing and is provided with M, and m metal is demarcated thing phase property value based on datum mark demarcation thing and is expressed as tm, and wherein M, m are greater than the natural number of 1, M >=m.
Preferably, described metal is demarcated thing and is belonged to same class, demarcating the phase property value scope demarcating thing in thing phase property table with this metalloid demarcation thing based on datum mark, thing phase property value scope based on datum mark demarcation thing demarcated by this metalloid is that metal demarcates the minima of thing phase property value based on datum mark demarcation thing to maximum.
Preferably, also including that the first datum mark demarcates thing, demarcating in alarm database is written with the first datum mark and demarcates phase property value S of thing or/and datum mark demarcates difference Z-S that the phase property value of thing demarcates the phase property value of thing with the first datum mark in thing phase property table.
Preferably, it it is 34 ° demarcating in thing phase property table with red copper with stainless phase property difference.
Preferably, also include benchmark module, for according to demarcating in thing phase property table, it is t with the first datum mark demarcation difference Z-S of phase property value of thing, metal demarcation thing phase property value based on datum mark demarcation thing that datum mark demarcates the phase property value of thing, calculates metal and demarcates thing phase property value t+Z-S based on the first datum mark demarcation thing.
Preferably, the first receiving coil is also included；Described phase property acquisition module is additionally operable to datum mark is demarcated the thing induction region by the first receiving coil, obtains datum mark and demarcates thing phase property value Y corresponding to the first receiving coil；Benchmark module is additionally operable to correction value Y-Z calculating the first receiving coil corresponding to receiving coil.
Preferably, the first receiving coil, phase shifter are also included；Phase shifter, for adjusting the phase place of the first receiving coil output signal, makes metal demarcate the phase property value detected time thing demarcates thing by the first receiving coil by described receiving coil with metal identical.
Preferably, also include judge module, for searching the demarcation thing phase property table of alarm database, it is judged that whether phase property value R of measured object meets the decision condition demarcated in thing phase property table, if meeting the decision condition demarcated in thing phase property table, send doubtful signal；Alarm module, is used for receiving doubtful signal.
Preferably, phase property value R of measured object and the difference of demarcation thing phase property table acceptance of the bid earnest phase property value T are within the scope of presetting.
Preferably, described decision condition is: measured object phase property value R-Z based on datum mark demarcation thing is in the range of the phase property value that thing demarcates thing based on datum mark demarcated by measured object metalloid, and Z is the phase property value that datum mark demarcates thing.
Preferably, thing phase property value scope based on datum mark demarcation thing demarcated by described measured object metalloid is to pre-enter in demarcation thing phase property table.
Preferably, described doubtful signal includes that metal demarcates the composition information of thing.
Preferably, described alarm module is additionally operable to after receiving doubtful signal, reminds staff to check manually.
Scaling method, method of testing and the sorting metals detection system that the sorting metals using the present invention to provide detects, solve and metal can be carried out classification detection, whether with doubtful demarcation thing thing with detection tested personnel, whether carry the metal objects forbidden or iron weapon, such as gun, cutter etc., shorten the review time, improve detection efficiency.
Accompanying drawing explanation
Fig. 1 is the scaling method flow chart of sorting metals of the present invention detection；
Fig. 2 is an embodiment schematic diagram of metal detector of the present invention；
Fig. 3 is the another embodiment schematic diagram of metal detector of the present invention；
Fig. 4 is the first embodiment block diagram of sorting metals detection system of the present invention；
Fig. 5 is the second embodiment block diagram of sorting metals detection system of the present invention；
Fig. 6 is the method for testing flow chart of sorting metals of the present invention detection；
Fig. 7 is the 3rd embodiment block diagram of sorting metals detection system of the present invention；
Fig. 8 is the 4th embodiment block diagram of sorting metals detection system of the present invention.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to the scope of embodiment statement.
Metal detector of the present invention includes by formula detector 200 or hand-held detector 300.
It is an embodiment schematic diagram of metal detector of the present invention with reference to Fig. 2, Fig. 2.Agent structure, transmitting coil 201, receiving coil 202, main frame (not shown) is included by formula detector 200.Main frame is used for controlling, and sends pumping signal and receives the signal of transmitting coil 201 to transmitting coil 201, receiving coil 202.
It is the another embodiment schematic diagram of metal detector of the present invention with reference to Fig. 3, Fig. 3.Hand-held detector 300 includes agent structure, transmitting coil 301, receiving coil 302, main frame 303.Main frame 303 is used for controlling, and sends pumping signal and receives the signal of transmitting coil 301 to transmitting coil 301, receiving coil 302.
According to Maxwell's Theory of Electromagnetic Field, launching pumping signal from transmitting coil 201, through aerial propagation, receiving coil 202 has faradic current and induction electromotive force.Particularly, when there being other metal parts can produce eddy current effect near transmitting coil 201 or receiving coil 202, thus faradic current and the induction electromotive force that receiving coil 202 produces is affected.
It is the scaling method flow chart of sorting metals of the present invention detection with reference to Fig. 1, Fig. 1.The scaling method of described sorting metals detection, comprises the following steps:
Step S101, demarcates the induction region of the thing receiving coil 202 by metal detector by metal.Particularly, during metal demarcates thing demarcation, it is possible to use the mode of the automatizatioies such as mechanical hand replaces manual operation, metal is demarcated the induction region of the thing receiving coil 202 by metal detector, can play quickly, effect accurately.The induction region of receiving coil 202 refers to that measured object can affect the region of the induction electromotive force that receiving coil 202 produces, and by formula detector 200, metal is demarcated thing by detector sense channel.In hand-held detector 300, metal is demarcated thing by receiving coil 302 induction region.
Concrete, when demarcating two receiving coils 202 that metal demarcates corresponding second coil groups 203 of thing, metal can be demarcated the space that thing is surrounded by the dotted line shown in Fig. 2, to obtain maximum induction electromotive force variable quantity, record now metal and demarcate thing corresponding to the phase property value of two receiving coils 202 in this space.
Described metal is demarcated thing and is made up of heterogeneity, and according to the needs of practical situation, metal demarcates thing can be provided with M, and M is the natural number more than 1.
Step S102, obtains metal and demarcates thing phase property value T corresponding to described receiving coil 202.Transmitting coil 201 pumping signal such as 5360Hz based on same hardware detection and same frequency, phase property value T is relevant to the material composition of measured object, therefore, it is fixing that special metal demarcates phase property value T of thing, but for different receiving coils 202, due to the difference on its analog feature, by different receiving coils 202, it is different that the metal measured demarcates phase property value T of thing, but for same receiving coil 202, the difference of the phase property value of two different metals demarcation things is fixing.
Step S103, demarcates the demarcation thing phase property table in the composition information write alarm database 205 of thing by phase property value T, metal.Such as, described metal is demarcated thing and is provided with M, then, m metal is demarcated thing phase property value and is expressed as Tm, demarcates and records the composition information having phase property value T, metal to demarcate thing in thing phase property table simultaneously.Particularly, consider the situation of multiple receiving coil 202, due to receiving coil 202 and the diversity of its analog circuit, need each receiving coil record data, the numbering of the receiving coil 202 of correspondence is recorded in phase property table, such as: have N number of receiving coil, m metal is demarcated thing and is passed through the data measured by the n-th receiving coil, can be recorded as Tmn.
It is the first embodiment block diagram of sorting metals detection system of the present invention with reference to Fig. 4, Fig. 4.Concrete, receiving coil 202 is connected with phase property acquisition module 204, the output waveform of phase property acquisition module 204 receiving coil 202 by analysis, extracts waveform phase, draws phase property value T.Due to the error of test, phase property value T is averaged through repetitive measurement and is obtained.Phase property acquisition module 204 is after determining phase property value T, and the composition information demarcating thing together with metal sends to alarm database 205.
Preferably, datum mark is demarcated the induction region of the thing receiving coil 202 by metal detector, obtain phase property value Z corresponding to receiving coil 202, phase property value Z is set to phase property datum mark 0.Benchmark module 206 calculates T-Z, show that metal is demarcated thing and demarcated phase property value t of thing based on datum mark；Phase property value t, metal are demarcated the demarcation thing phase property table in the composition information write alarm database 205 of thing.It can be metal that datum mark demarcates thing.
Preferably, described metal is demarcated thing and is provided with M, and m metal is demarcated thing phase property value based on datum mark demarcation thing and is expressed as tm, and wherein M, m are greater than the natural number of 1, M >=m.Described M metal is demarcated thing and is belonged to same class, to maximum, the minima that metal is demarcated the phase property value that thing demarcates thing based on datum mark is set as that this metalloid is demarcated thing and demarcated the phase property value scope of thing based on datum mark.
Preferably, above-mentioned scaling method is further comprising the steps of: the first datum mark is demarcated the induction region of the thing receiving coil by described metal detector, obtain phase property value S, and the demarcation thing phase property table being written in alarm database or/and demarcate phase property value and the demarcation thing phase property table in the difference Z-S write alarm database of the phase property value of the first datum mark demarcation thing of thing by datum mark.Concrete, such as, it is provided with red copper and demarcates thing and rustless steel demarcation thing, by it respectively by the induction region of the receiving coil 202 of metal detector, show that red copper is demarcated thing and demarcated thing phase property value with rustless steel, also can draw its difference, e.g. 34 °, these data be write the demarcation thing phase property table of alarm database.It should be understood that both by metal detector by the way of consistent, the exciting signal frequency of transmitting coil 201, receiving coil 202 are identical with phase property acquisition module 204.By above-mentioned demarcation mode, can deduce when other receiving coils 202 detect, if with red copper demarcate thing phase property value for 0, just can judge rustless steel demarcation thing phase property value as-34 °, such scheme adds the transportable property of experimental data.
Preferably, above-mentioned scaling method is further comprising the steps of: according to demarcating in thing phase property table, it is t that the phase property value of datum mark demarcation thing and the first datum mark demarcation difference Z-S of phase property value of thing, metal demarcate thing phase property value based on datum mark demarcation thing, and calculating metal is demarcated thing phase property value t+Z-S based on the first datum mark demarcation thing and writes demarcation thing phase property table.Above-mentioned computing function is completed by benchmark module 206, and the result after calculating is stored in demarcation thing phase property table.
Concrete, if, it is 34 ° that known red copper demarcates the phase property difference of thing and rustless steel demarcation thing, and the phase property value that ferrum class demarcates thing based on red copper is 10 ° to 80 °, and benchmark module 206 calculates ferrum class and demarcates the phase property value 44 ° to 114 ° of thing based on rustless steel.
By the way, phase property difference and the measured object phase property value based on one of them datum mark demarcation thing of thing can be demarcated by known any two datum mark, deduce that measured object demarcates the phase property value of thing based on another datum mark.Further, if, known first datum mark demarcates thing and the phase property difference of second datum mark demarcation thing, simultaneously it is also known that second datum mark demarcates thing and the phase property difference of the 3rd datum mark demarcation thing, can deduce that first datum mark demarcates thing and the phase property difference of the 3rd datum mark demarcation thing.It should be understood that said reference point demarcate thing by metal detector by the way of consistent, the exciting signal frequency of transmitting coil 201, receiving coil 202 are identical with phase property acquisition module 204.Preserved by form, and be applied to each metal detector, debugging and nominal time can be greatly saved.
Preferably, also include the first receiving coil, datum mark is demarcated the thing induction region by the first receiving coil, obtain datum mark and demarcate thing phase property value Y corresponding to the first receiving coil, calculate the first receiving coil and corresponding to correction value Y-Z of described receiving coil and write demarcation thing phase property table.On the one hand, correction value is for revising the difference of phase property detection between two coil links, after i.e. by the test result of the first receiving coil being carried out the correction of Y-Z as, the first receiving coil can be regarded the coil with the phase property detection performance identical with receiving coil 202.On the other hand, for the phase property value that will be obtained when demarcating thing by the first receiving coil, can be modified by correction value, draw the data consistent with the phase property value obtained when demarcating thing by receiving coil 202, i.e. unify the phase property value of corresponding different receiving coil.Unified phase property value is conducive to demarcating unification and the migration of thing phase property table.Should be appreciated that described receiving coil 202 may belong to same metal detector or is belonging respectively to different metal detectors from the first receiving coil.
It is the second embodiment block diagram of sorting metals detection system of the present invention with further reference to Fig. 5, Fig. 5.
Preferably, also include the first receiving coil 500, adjust the phase shifter 501 in the first receiving coil 500, make metal demarcate the phase property value detected time thing demarcates thing by the first receiving coil 500 by described receiving coil 202 with metal identical.Phase shifter 501 connects the first receiving coil 500 and phase property acquisition module 204, and the output signal of the first receiving coil 500 is entered horizontal phasing control.By controlling the size of phase shifter 501 phase shift, detection metal demarcation thing is by phase property value when the first receiving coil 500 simultaneously, makes phase property value demarcate thing with this metal by identical when receiving coil 202.Phase shifter 501 suspension control signal controls, and this signal can be sent by main frame, and tester can control the phase shifter 501 further work by adjusting phase shifting parameter on main frame.Additionally, about the mode adjusting phase shifter 501 phase shift size, manual mode can also be passed through, regulate the size of the potentiometer 501 of phase shifter thus control the phase shift size of phase shifter 501, until the phase property value detected time metal demarcation thing demarcates thing by the first receiving coil 500 by receiving coil 202 with metal is identical.By above-mentioned phase shifter correcting mode, first receiving coil 500 can be regarded as the coil with the phase property detection performance identical with receiving coil 202, be conducive to compatibility and the uniformity of phase property table data, it is simple to the receiving coil that migrating or solve same metal detector in different metal detector has multiple analog feature different causes the skimble-scamble problem of phase property value.
It is the method for testing flow chart of sorting metals of the present invention detection with further reference to Fig. 6, Fig. 6.
Step S601, by the measured object induction region by the receiving coil 202 of metal detector.
Step S602, obtains phase property value R of measured object.Measured object by the way of the induction region of the receiving coil 202 of metal detector with metal demarcate thing by by the way of as.Calculate the mode of phase property value too.Concrete, receiving coil 202 is connected with phase property acquisition module 204, the output waveform of phase property acquisition module 204 receiving coil 202 by analysis, extracts waveform phase, calculates phase property value R.
Step S603, searches the demarcation thing phase property table of alarm database 205, it is judged that whether phase property value R of measured object meets the decision condition demarcated in thing phase property table；If meeting the decision condition demarcated in thing phase property table, then send doubtful signal to alarm module 602.
Concrete, demarcate phase property value T having metal demarcation thing in thing phase property table, phase property value R of measured object is contrasted one by one with T.Judge that phase property value R of measured object and each demarcate the difference of thing phase property value T within the scope of presetting, if meeting in default scope, then it is assumed that the material composition that the metal closest to T value demarcates thing is most like with measured object.Measured object is classified as doubtful article.Particularly, described doubtful signal has the composition information of the metal demarcation thing closest to T value.The scope preset can be set at the needs of actually used process according to user, and the size of preset range determines tolerance degree during test measured object.By such scheme, can first screen doubtful article, further check, improve the efficiency checked.
Preferably, described decision condition is: measured object phase property value R-Z based on datum mark demarcation thing is in the range of the phase property value that thing demarcates thing based on datum mark demarcated by measured object metalloid, and wherein Z is the phase property value that datum mark demarcates thing.If, measured object phase property based on red copper value is 30 °, it is known that the phase property value that ferrum class demarcates thing based on red copper is 10 ° to 80 °, then it is assumed that decision condition is met.By such scheme, can first screen doubtful article, further check, improve the efficiency checked.
Preferably, thing phase property value scope based on datum mark demarcation thing demarcated by described measured object metalloid is to pre-enter in demarcation thing phase property table.Concrete, such as, it is to be pre-entered in demarcation thing phase property table that ferrum class phase property value based on red copper demarcation thing is 10 ° to 80 °, it is preferred that preserves in the form of a file, directly invokes in different metal detector.
Preferably, after alarm module 602 receives doubtful signal, staff is reminded to check manually.The mode reminded is various, shows exception symbol by display screen, can show that the metal closest to T value demarcates thing composition information simultaneously, be given a warning sound by speaker, pass through light flash.Manual type inspection can use X-ray machine or macroscopy mode.Described doubtful signal includes that metal demarcates the composition information of thing.
Preferably, metal detector is provided with more than one receiving coil 202, described doubtful signal also includes the positional information of receiving coil 202, wherein, receiving coil 202 is that the waveform of its induced voltage contains the phase property value information meeting the decision condition demarcated in thing phase property table, and the variable quantity of its induced voltage is maximum.Positional information includes its concrete position or numbering.Its particular location can also be pointed out by being arranged on the light units near receiving coil 202.Security staff's particular location of doubtful article can be told by the way, facilitate it to check further.Concrete, when a measured object passes through metal detector when, the induced voltage that part or all receiving coils 202 can receive changes, the corresponding phase eigenvalue of receiving coil 202 can be obtained by the waveform of extraction and analysis induced voltage, judge whether it meets the decision condition in phase property table, for the receiving coil 202 met corresponding to the phase property value of decision condition, and the induced voltage variable quantity receiving it carries out size and compares, receiving coil 202 information corresponding to maximum for induced voltage variable quantity is included in doubtful information and sends to alarm module 602.
It is the first embodiment block diagram of sorting metals detection system of the present invention with reference to Fig. 4, Fig. 4.
Present invention additionally comprises a kind of sorting metals detection system, the transmitting coil including metal detector and being provided at its inner portion and receiving coil, it is characterized in that: also include phase property acquisition module 204, metal is demarcated thing by phase property T corresponding during the induction region of the receiving coil 202 of metal detector for obtaining；Alarm database 205, wherein has demarcation thing phase property table in alarm database 205, for writing phase property value T, the composition information of metal demarcation thing.
Preferably, described sorting metals detection system also includes that metal demarcates thing, for metal is demarcated the thing induction region by described receiving coil, obtains its phase property value T.
Below with by formula detector 200 as an example.
Metal is demarcated the induction region of the thing receiving coil 202 by metal detector.Particularly, metal is demarcated during thing demarcates, it is possible to use the mode of the automatizatioies such as mechanical hand replaces manual operation, metal demarcates thing by the induction region by the receiving coil 202 of formula detector, can play quickly, effect accurately.The induction region of receiving coil 202 refers to that measured object can affect the region of the induction electromotive force that receiving coil 202 produces, and by formula detector 200, metal is demarcated thing by detector sense channel.In hand-held detector 300, metal is demarcated thing near receiving coil 302 induction region.
Concrete, when demarcating two receiving coils 202 that metal demarcates corresponding second coil groups 203 of thing, metal can be demarcated the space that thing is surrounded by the dotted line shown in Fig. 2, to obtain maximum induction electromotive force variable quantity, record now metal and demarcate thing corresponding to phase property value T of two receiving coils 202 in this space.
According to the needs of practical situation, metal demarcates thing can be provided with M, and M is the natural number more than 1.
Obtain metal and demarcate thing phase property value T corresponding to described receiving coil 202.Transmitting coil 201 pumping signal such as 5360Hz based on identical hardware detection and same frequency, phase property value T is relevant to the material composition of measured object, therefore, it is fixing that special metal demarcates phase property value T of thing, but for different receiving coils 202, due to the difference on its analog feature, by different receiving coils 202, it is different that the metal measured demarcates phase property value T of thing, but for same receiving coil 202, the difference of the phase property value of two different metals demarcation things is fixing.
Phase property value T, metal are demarcated the demarcation thing phase property table in the composition information write alarm database 205 of thing.Such as, described metal is demarcated thing and is provided with M, then, m metal is demarcated thing phase property value and is expressed as Tm, demarcates and records the composition information having phase property value T, metal to demarcate thing in thing phase property table simultaneously.Particularly, consider the situation of multiple receiving coil 202, due to receiving coil 202 and the diversity of its analog circuit, need each receiving coil record data, the numbering of the receiving coil 202 of correspondence is recorded in phase property table, such as: have N number of receiving coil, m metal is demarcated thing and is passed through the data measured by the n-th receiving coil, can be recorded as Tmn.
With reference to Fig. 4, concrete, receiving coil 202 is connected with phase property acquisition module 204, the waveform of phase property acquisition module 204 receiving coil 202 by analysis, extracts waveform phase, draws phase property value T.Due to the error of test, phase property value T is averaged through repetitive measurement and is obtained.Phase property acquisition module 204 is after determining phase property value T, and the composition information demarcating thing together with metal sends to alarm database 205.
It is the 3rd embodiment block diagram of sorting metals detection system of the present invention with further reference to Fig. 8, Fig. 8.Preferably, sorting metals detection system also includes that datum mark demarcates thing, for datum mark being demarcated the induction region of the thing described receiving coil 202 by metal detector, obtaining phase property value Z corresponding to receiving coil 202, phase property value Z is set to phase property datum mark 0.It can be metal that datum mark demarcates thing.
Preferably, sorting metals detection system also includes benchmark module 206, is used for calculating T-Z, show that metal is demarcated thing and demarcated phase property value t of thing based on datum mark；Demarcating in described alarm database 205 has phase property value t, the composition information of metal demarcation thing in thing phase property table.
Preferably, described metal is demarcated thing and is provided with M, and m metal is demarcated thing phase property value based on datum mark demarcation thing and is expressed as tm, and wherein M, m are greater than the natural number of 1, M >=m.Described metal is demarcated thing and is belonged to same class, to maximum, the minima that metal is demarcated the phase property value that thing demarcates thing based on datum mark is set as that this metalloid is demarcated thing and demarcated the phase property value scope of thing based on datum mark.
Preferably, described sorting metals detection system also includes that the first datum mark demarcates thing, and the phase property value of demarcating in alarm database is written with the first datum mark demarcation thing phase property value S or datum mark demarcation thing in thing phase property table demarcates difference Z-S of the phase property value of thing with the first datum mark.Concrete, such as, it is provided with red copper and demarcates thing and thing demarcated by rustless steel, by it respectively by the induction region of the receiving coil 202 of metal detector, show that red copper is demarcated thing and demarcated thing phase property value with rustless steel, it is also possible to draw its difference, e.g. 34 °.Demarcation thing phase property table by these data write alarm database.It should be understood that both by metal detector by the way of consistent, the exciting signal frequency of transmitting coil 201, receiving coil 202 are identical with phase property acquisition module 204.By above-mentioned demarcation mode, can deduce when other receiving coils 202 detect, if with red copper demarcate thing phase property value for 0, just can judge rustless steel demarcation thing phase property value as-34 °.Such scheme adds the transportable property of experimental data.
Preferably, also include benchmark module 206, for according to demarcating in thing phase property table, it is t with the first datum mark demarcation difference Z-S of phase property value of thing, metal demarcation thing phase property value based on datum mark demarcation thing that datum mark demarcates the phase property value of thing, calculates metal and demarcates thing phase property value t+Z-S based on the first datum mark demarcation thing.Described computing function is completed by benchmark module 206, and the result after calculating is stored in demarcation thing phase property table.
Concrete, it is 34 ° that known red copper demarcates the phase property difference of thing and rustless steel demarcation thing, it is 10 ° to 80 ° that ferrum class demarcates thing phase property value based on red copper demarcation thing, and benchmark module 206 calculates ferrum class and demarcates the phase property value 44 ° to 114 ° of thing based on rustless steel.
By the way, phase property difference and the measured object phase property value based on one of them datum mark demarcation thing of thing can be demarcated by known any two datum mark, deduce measured object phase property based on another datum mark standard error value.Further, if, known first datum mark demarcates thing and the phase property difference of second datum mark demarcation thing, simultaneously it is also known that second datum mark demarcates thing and the phase property difference of the 3rd datum mark demarcation thing, can deduce that first datum mark demarcates thing and the phase property difference of the 3rd datum mark demarcation thing.It should be understood that both by metal detector by the way of consistent, the exciting signal frequency of transmitting coil 201, receiving coil 202 are identical with phase property acquisition module 204.Preserved by form, and be applied to each metal detector, debugging and nominal time can be greatly saved.
Preferably, above-mentioned sorting metals detection system also includes the first receiving coil, datum mark is demarcated the thing induction region by the first receiving coil, described phase property acquisition module 204 is additionally operable to datum mark is demarcated the thing induction region by the first receiving coil, obtains datum mark and demarcates thing phase property value Y corresponding to the first receiving coil；Benchmark module 206 is additionally operable to correction value Y-Z calculating the first receiving coil corresponding to receiving coil.On the one hand, correction value is for revising the difference of phase property detection between two coil links, after i.e. by the test result of the first receiving coil being carried out the correction of Y-Z as, the first receiving coil can be regarded the coil with the phase property detection performance identical with receiving coil.On the other hand, for the phase property value that will be obtained when demarcating thing by the first receiving coil, can be modified by correction value, draw the data consistent with the phase property value obtained when demarcating thing by receiving coil, i.e. unify the phase property value of corresponding different coil.Unified phase property value is conducive to demarcating unification and the migration of thing phase property table.Should be appreciated that described receiving coil and the first receiving coil may belong to same metal detector or be belonging respectively to different metal detectors.
It is the second embodiment block diagram of sorting metals detection system of the present invention with further reference to Fig. 5, Fig. 5.
Preferably, above-mentioned sorting metals detection system also includes the first receiving coil 500 and phase shifter 501, phase shifter 501, for adjusting the phase place of the first receiving coil 500 output signal, makes metal demarcate the phase property value detected time thing demarcates thing by the first receiving coil 500 by described receiving coil 202 with metal identical.Phase shifter 501 connects the first receiving coil 500 and phase property acquisition module 204, and the output signal of the first receiving coil 500 is entered horizontal phasing control.By controlling the size of phase shifter 501 phase shift, detection metal demarcation thing is by phase property value when the first receiving coil 500 simultaneously, makes phase property value demarcate thing with this metal by identical when receiving coil 202.Phase shifter 501 suspension control signal controls, and this signal can be sent by main frame, and tester can control the phase shifter 501 further work by adjusting phase shifting parameter on main frame.Additionally, about the mode adjusting phase shifter 501 phase shift size, manual mode can also be passed through, regulate the size of the potentiometer 501 of phase shifter thus control the phase shift size of phase shifter 501, until the phase property value detected time metal demarcation thing demarcates thing by the first receiving coil 500 by receiving coil 202 with metal is identical.By above-mentioned phase shifter correcting mode, first receiving coil 500 can be regarded as the coil with the phase property detection performance identical with receiving coil 202, be conducive to compatibility and the uniformity of phase property table data, it is simple to the receiving coil that migrating or solve same metal detector in different metal detector has multiple analog feature different causes the skimble-scamble problem of phase property value.
It is the 3rd embodiment block diagram of sorting metals detection system of the present invention with further reference to Fig. 7, Fig. 7.
Sorting metals detection system of the present invention also includes judge module 701, for searching the demarcation thing phase property table of alarm database 205, judge whether phase property value R of measured object meets the decision condition demarcated in thing phase property table, if meeting the decision condition demarcated in thing phase property table, send doubtful signal；Alarm module 702 is used for receiving doubtful signal.
Preferably, described decision condition is: the difference of phase property value R of measured object and demarcation thing phase property table acceptance of the bid earnest phase property value T is within the scope of presetting.Concrete, demarcate phase property value T having metal demarcation thing in thing phase property table, phase property value R of measured object is contrasted one by one with T.Judge that phase property value R of measured object and each demarcate the difference of thing phase property value T within the scope of presetting, if meeting in default scope, then it is assumed that the material composition that the metal closest to T value demarcates thing is most like with measured object.Measured object is classified as doubtful article.Particularly, described doubtful signal has the composition information of the metal demarcation thing closest to T value.
The scope preset can be set at the needs of actually used process according to user, and the size of preset range determines tolerance degree during test measured object.By such scheme, can first screen doubtful article, further check, improve the efficiency checked.
Preferably, described decision condition is: measured object phase property value R-Z based on datum mark demarcation thing is in the range of the phase property value that thing demarcates thing based on datum mark demarcated by measured object metalloid, and wherein Z is the phase property value that datum mark demarcates thing.Such as, if, measured object phase property based on red copper value is 30 °, it is known that the phase property value that ferrum class demarcates thing based on red copper is 10 ° to 80 °, then it is assumed that decision condition is met.By such scheme, can first screen doubtful article, further check, improve the efficiency checked.
Preferably, thing phase property value scope based on datum mark demarcation thing demarcated by described measured object metalloid is to pre-enter in demarcation thing phase property table.Concrete, such as, it is to be pre-entered in demarcation thing phase property table that ferrum class phase property value based on red copper demarcation thing is 10 ° to 80 °, it is preferred that preserves in the form of a file, directly invokes in different metal detector.
Preferably, after alarm module 602 is additionally operable to receive doubtful signal, staff is reminded to check manually.The mode reminded is various, shows exception symbol by display screen, can show that the metal closest to T value demarcates thing composition information simultaneously, be given a warning sound by speaker, pass through light flash.Manual type inspection can use X-ray machine or macroscopy mode.
Preferably, metal detector is provided with more than one receiving coil 202, described doubtful signal also includes the positional information of receiving coil 202, wherein, receiving coil 202 is that the waveform of its induced voltage contains the phase property value information meeting the decision condition demarcated in thing phase property table, and the variable quantity of its induced voltage is maximum.Positional information includes its concrete position or numbering.Its particular location can also be pointed out by being arranged on the light units near receiving coil 202.Security staff's particular location of doubtful article can be told by the way, facilitate it to check further.Concrete, when a measured object passes through metal detector when, the induced voltage that part or all receiving coils 202 can receive changes, the corresponding phase eigenvalue of receiving coil 202 can be obtained by the waveform of extraction and analysis induced voltage, judge whether it meets the decision condition in phase property table, for the receiving coil 202 met corresponding to the phase property value of decision condition, and the induced voltage variable quantity receiving it carries out size and compares, receiving coil 202 information corresponding to maximum for induced voltage variable quantity is included in doubtful information and sends to alarm module 602.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Skilled artisan would appreciate that, invention scope involved in the application, it is not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, also should contain in the case of without departing from described inventive concept, other technical scheme being carried out combination in any by above-mentioned technical characteristic or its equivalent feature and being formed simultaneously.Such as features described above and (but not limited to) disclosed herein have the technical characteristic of similar functions and replace mutually and the technical scheme that formed.
Claims (35)
1. the scaling method of a sorting metals detection, it is characterised in that: comprise the following steps:
(A) metal is demarcated the induction region of the thing receiving coil by metal detector；
(B) obtain metal and demarcate phase property value T of thing；
(C) phase property value T, metal are demarcated the demarcation thing phase property table in the composition information write alarm database of thing.
The scaling method of sorting metals the most according to claim 1 detection, it is characterised in that: it is that repetitive measurement is averaged and obtained that described metal demarcates phase property value T of thing.
The scaling method of sorting metals the most according to claim 2 detection, it is characterized in that: further comprising the steps of: datum mark is demarcated the induction region of the thing receiving coil by described metal detector, obtain phase property value Z, phase property value Z is set to phase property datum mark 0.
The scaling method of sorting metals the most according to claim 3 detection, it is characterised in that: further comprising the steps of: to calculate T-Z, show that metal is demarcated thing and demarcated phase property value t of thing based on datum mark；Phase property value t, metal are demarcated the demarcation thing phase property table in the composition information write alarm database of thing.
The scaling method of sorting metals the most according to claim 4 detection, it is characterised in that: described metal is demarcated thing and is provided with M, and m metal is demarcated thing phase property value based on datum mark demarcation thing and is expressed as tm, and wherein M, m are greater than the natural number of 1, M >=m.
The scaling method of sorting metals the most according to claim 5 detection, it is characterized in that: described metal is demarcated thing and belonged to same class, to maximum, the minima that metal is demarcated the phase property value that thing demarcates thing based on datum mark is set as that this metalloid is demarcated thing and demarcated the phase property value scope of thing based on datum mark.
The scaling method of sorting metals the most according to claim 4 detection, it is characterized in that: further comprising the steps of: the first datum mark is demarcated the induction region of the thing receiving coil by described metal detector, obtain phase property value S, and the demarcation thing phase property table being written in alarm database or/and demarcate phase property value and the demarcation thing phase property table in the difference Z-S write alarm database of the phase property value of the first datum mark demarcation thing of thing by datum mark.
The scaling method of sorting metals the most according to claim 7 detection, it is characterised in that: in demarcating thing phase property table, write: red copper and stainless phase property difference are 34 °.
The scaling method of sorting metals the most according to claim 7 detection, it is characterized in that: further comprising the steps of: according to demarcating in thing phase property table, it is t that the phase property value of datum mark demarcation thing and the first datum mark demarcation difference Z-S of phase property value of thing, metal demarcate thing phase property value based on datum mark demarcation thing, and calculating metal is demarcated thing phase property value t+Z-S based on the first datum mark demarcation thing and writes demarcation thing phase property table.
10. according to the scaling method of the sorting metals detection of any claim in claim 3-9, it is characterized in that: also include the first receiving coil, datum mark is demarcated the thing induction region by the first receiving coil, obtain datum mark and demarcate thing phase property value Y corresponding to the first receiving coil, calculate the first receiving coil and corresponding to correction value Y-Z of described receiving coil and write demarcation thing phase property table.
11. according to the scaling method of the sorting metals detection of any claim in claim 3-9, it is characterized in that: also include the first receiving coil, adjust the phase shifter being connected with the first receiving coil, make metal demarcate the phase property value detected time thing demarcates thing by the first receiving coil by described receiving coil with metal identical.
The method of testing of 12. 1 kinds of sorting metals detections, it is characterised in that: comprise the following steps:
(D) measured object is passed through the induction region of the receiving coil of metal detector；
(E) phase property value R of measured object is obtained；
(F) the demarcation thing phase property table of alarm database is searched, it is judged that whether phase property value R of measured object meets the decision condition demarcated in thing phase property table；If meeting the decision condition demarcated in thing phase property table, then send doubtful signal to alarm module.
The method of testing of 13. sorting metals according to claim 12 detections, it is characterised in that: described decision condition is: the difference of phase property value R of measured object and demarcation thing phase property table acceptance of the bid earnest phase property value T is within the scope of presetting.
The method of testing of 14. sorting metals according to claim 12 detections, it is characterized in that: described decision condition is: measured object phase property value R-Z based on datum mark demarcation thing is in the range of the phase property value that thing demarcates thing based on datum mark demarcated by measured object metalloid, and Z is the phase property value that datum mark demarcates thing.
The method of testing of 15. sorting metals according to claim 14 detections, it is characterised in that: thing phase property value scope based on datum mark demarcation thing demarcated by described measured object metalloid is to pre-enter in demarcation thing phase property table.
16. according to the method for testing of the sorting metals detection of any claim in claim 12-14, it is characterised in that: described doubtful signal includes that metal demarcates the composition information of thing.
The method of testing of 17. sorting metals according to claim 16 detections, it is characterised in that: further comprising the steps of: after alarm module receives doubtful signal, remind staff to check manually.
18. 1 kinds of sorting metals detection systems, the transmitting coil including metal detector and being provided at its inner portion and receiving coil, it is characterised in that: also include phase property acquisition module and alarm database；The phase property value that detects when phase property acquisition module is for obtaining metal measured object by the induction region of the receiving coil of metal detector；Alarm database has demarcation thing phase property table, demarcates thing phase property table for recording phase property value and corresponding metal ingredient information.
19. sorting metals detection systems according to claim 18, it is characterised in that: also including that metal demarcates thing, for metal being demarcated the thing induction region by described receiving coil, obtaining its phase property value T.
20. sorting metals detection systems according to claim 19, it is characterised in that: in described demarcation thing phase property table, record has phase property value T, demarcates the composition information of thing；Phase property value T is that repetitive measurement is averaged and obtained.
21. sorting metals detection systems according to claim 20, it is characterised in that: also include that datum mark demarcates thing, for datum mark being demarcated the thing induction region by described receiving coil, obtaining its phase property value Z and being set to phase property datum mark 0.
22. sorting metals detection systems according to claim 21, it is characterised in that: also include benchmark module, be used for calculating T-Z, show that metal is demarcated thing and demarcated phase property value t of thing based on datum mark；Demarcating in described alarm database has phase property value t, the composition information of metal demarcation thing in thing phase property table.
23. sorting metals detection systems according to claim 22, it is characterised in that: described metal is demarcated thing and is provided with M, and m metal is demarcated thing phase property value based on datum mark demarcation thing and is expressed as tm, and wherein M, m are greater than the natural number of 1, M >=m.
24. sorting metals detection systems according to claim 23, it is characterized in that: described metal is demarcated thing and belonged to same class, demarcating the phase property value scope demarcating thing in thing phase property table with this metalloid demarcation thing based on datum mark, thing phase property value scope based on datum mark demarcation thing demarcated by this metalloid is that metal demarcates the minima of thing phase property value based on datum mark demarcation thing to maximum.
25. sorting metals detection systems according to claim 22, it is characterized in that: also include that the first datum mark demarcates thing, demarcating in alarm database is written with the first datum mark and demarcates phase property value S of thing or/and datum mark demarcates difference Z-S that the phase property value of thing demarcates the phase property value of thing with the first datum mark in thing phase property table.
26. sorting metals detection systems according to claim 25, it is characterised in that: it is 34 ° demarcating in thing phase property table with red copper with stainless phase property difference.
27. sorting metals detection systems according to claim 25, it is characterized in that: also include benchmark module, for according to demarcating in thing phase property table, it is t with the first datum mark demarcation difference Z-S of phase property value of thing, metal demarcation thing phase property value based on datum mark demarcation thing that datum mark demarcates the phase property value of thing, calculates metal and demarcates thing phase property value t+Z-S based on the first datum mark demarcation thing.
28. according to the sorting metals detection system of any claim in claim 21-27, it is characterised in that: also include the first receiving coil；Described phase property acquisition module is additionally operable to datum mark is demarcated the thing induction region by the first receiving coil, obtains datum mark and demarcates thing phase property value Y corresponding to the first receiving coil；Benchmark module is additionally operable to correction value Y-Z calculating the first receiving coil corresponding to receiving coil.
29. according to the sorting metals detection system of any claim in claim 21-27, it is characterised in that: also include the first receiving coil, phase shifter；Phase shifter, for adjusting the phase place of the first receiving coil output signal, makes metal demarcate the phase property value detected time thing demarcates thing by the first receiving coil by described receiving coil with metal identical.
30. sorting metals detection systems according to claim 18, it is characterized in that: also include judge module, for searching the demarcation thing phase property table of alarm database, judge whether phase property value R of measured object meets the decision condition demarcated in thing phase property table, if meeting the decision condition demarcated in thing phase property table, send doubtful signal；Alarm module, is used for receiving doubtful signal.
31. sorting metals detection systems according to claim 30, it is characterised in that: described decision condition is: the difference of phase property value R of measured object and demarcation thing phase property table acceptance of the bid earnest phase property value T is within the scope of presetting.
32. sorting metals detection systems according to claim 30, it is characterized in that: described decision condition is: measured object phase property value R-Z based on datum mark demarcation thing is in the range of the phase property value that thing demarcates thing based on datum mark demarcated by measured object metalloid, and Z is the phase property value that datum mark demarcates thing.
33. sorting metals detection systems according to claim 32, it is characterised in that: thing phase property value scope based on datum mark demarcation thing demarcated by described measured object metalloid is to pre-enter in demarcation thing phase property table.
34. according to the sorting metals detection system of any claim in claim 30-32, it is characterised in that: described doubtful signal includes that metal demarcates the composition information of thing.
The test system of 35. sorting metals according to claim 34 detections, it is characterised in that: described alarm module is additionally operable to after receiving doubtful signal, reminds staff to check manually.
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