CN105842742A - Specific metal detecting device and specific metal intelligent identification learning method - Google Patents
Specific metal detecting device and specific metal intelligent identification learning method Download PDFInfo
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- CN105842742A CN105842742A CN201610177368.4A CN201610177368A CN105842742A CN 105842742 A CN105842742 A CN 105842742A CN 201610177368 A CN201610177368 A CN 201610177368A CN 105842742 A CN105842742 A CN 105842742A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
Abstract
The invention belongs to the technical field of security inspection equipment, and aims to overcome defects in prior art and provides a specific metal detecting device for identifying different kinds of metal. The specific metal detecting equipment comprises a detecting unit, a processing unit and an interaction unit, wherein the detecting unit, the processing unit and the interaction unit are successively connected. Furthermore the invention provides a simple specific metal identification learning method which is established based on the specific metal detecting device and can be operated without any professional knowledge. Through the learning method, the metal detecting equipment performs automatic acquisition and storage on a characteristic parameter of to-be-detected metal, and furthermore utilizes the parameter as warning and comparing data in a subsequent detecting process. Through specific metal identification learning, the specific metal detecting device and the specific metal intelligent identification learning method have advantages of simplifying a warning device, realizing high accuracy, lowering requirement for an operator, and realizing intelligent setting.
Description
Technical field
The invention belongs to technical field of security inspection equipment, the most specially say it is a kind of special metal detecting devices and the learning method of special metal identification.
Background technology
Metal detection technology is widely used in the aspects such as military affairs, mineral products, industry, safety check, and the activity of hunting for treasure of individual.For clearance, the removal of mines in military affairs；Mineral exploration is used for find metallics；In the food industry, the metal object may being mixed in detection food.Especially as a kind of conventional security device, the public places such as airport, station, customs, law court it are widely used in by formula metal detection door and Handheld metal detector, violated metal with detection is hidden in human body, such as controlled knife, firearms etc..The most existing by formula metal detection door owing to not possessing the ability distinguishing metal types, thus all metals detected all can be reported to the police, cause current metal detection door not play its due effect in safety check, be more a kind of deterrent effect.In order to reduce false alarm rate, metal interested is only reported to the police by metal detection, and other metal is not reported to the police, such as only cutter, firearms are reported to the police and do not reported to the police mobile phone key, develop and have devised special metal detection device, this device utilizes the conductivity of tested metal and the difference of permeability and to sense the eddy current of generation different, and the difference that the secondary field of thus vortex excitation is on being received back to the impact that road produces, and distinguishes the metal of unlike material.Detection device interior includes the property database of every kind of metal, is configured, by external interface or port, the characteristic needing the metal to be detected reported to the police.When arranging warning metal types, it is necessary first to metal types to be measured carrying out characteristic parameter test, the most again this parameter is arranged machine inside and preserve, equipment will be provided as, by this, the reference value compared of reporting to the police.This setting up procedure is typically relatively complex and effect has the most crucial, so needing operator carry out professional training or is arranged by professional, this uses at the scene is very inconvenient.
Summary of the invention
To be solved technical problem is that of this patent overcomes in prior art, the complexity set tested metal for the special metal detecting devices that is identified different metal and professional problem.
In order to solve above-mentioned technical problem, this patent be employed technical scheme comprise that a kind of special metal detecting devices of offer, and for being identified different metal, described special metal detecting devices includes detector unit, processing unit and the interactive unit being sequentially connected with.It is also proposed that based on this special metal detecting devices set up a kind of simple, need not the learning method of the special metal identification that any Professional knowledge can also be set.By this learning method, the characteristic parameter of metal to be detected is gathered and stores by metal detection device automatically, and in follow-up detection process, using this parameter as warning correction data.By special metal identification learning, alarm device can be simplified, reduce the requirement to operator, realize intelligentized control.
Further, described detector unit includes electromagnetic induction coil, receiving coil, alignment coil, signal output apparatus, signal acquisition circuit and signal calibration circuit, and described electromagnetic induction coil is connected with signal output apparatus,
Receiving coil is connected with signal acquisition circuit, and alignment coil is connected with calibration circuit.The receiving coil of described detector unit is single or multiple array arrangement, and the unlike signal being switched the generation of multiple receiving coil by signal switching circuit is exported to signal acquisition circuit.And described electromagnetic induction coil is made up of the coil of two diverse locations, for producing an electromagnetic field to receiving coil balance；When metal will lose original balance near electromagnetic induction coil, electromagnetic field.Described receiving coil is for receiving the electromagnetic signal that electromagnetic induction coil produces, and when the electromagnetic field disequilibrium of electromagnetic induction coil, produced electromagnetic signal will change.
Alignment coil is connected with signal calibration circuit.Described alignment coil is used for disturbing electromagnetic field to make electromagnetic field disequilibrium, produces a stable calibration signal on receiving coil.Described calibration circuit is for exporting to calibrating circuit the calibration signal response of input.
Described signal output apparatus includes D/A conversion circuit, amplifier or the power amplifier being sequentially connected with, for signal being amplified output to electromagnetic induction coil.Described signal acquisition circuit includes amplifier, wave filter and the D/A conversion circuit being sequentially connected with, for multiple signals that multiple receiving coils are exported carry out signals collecting, switch, amplify, filter, analog-digital conversion and digital signal export.
Further, described processing unit includes signal processing circuit and the data base being sequentially connected with, and described data base is made up of data storage circuitry.Signal processing unit for carrying out feature extraction, comparing and identify to the digital signal of signal acquisition circuit input, and judges according to the threshold data output in data base.Data base is made up of data storage circuitry, and storage has the characteristic information of different metal, and can store mutually with external equipment, is contrasted by information, can identify metal more accurately.
Further, described interactive unit includes parallel connected indicating circuit and data interaction circuit, and described indicating circuit is made up of sound, light and vibrating sensor, for providing instruction to the judgement of signal processing circuit output.Described data interaction circuit is made up of data transmission circuits such as serial ports.
Based on above-mentioned special metal detecting devices, this patent proposes a kind of special metal identification learning method simultaneously, and the method comprises the steps:
S1) mode that button, remote controller set or start automatically sets is used to open metal detecting device；The electromagnetic field produced by electromagnetic induction coil produces a balanced electromagnetic field to receiving coil.
S2) needs are set to the metal of warning metal types be placed in detecting area, and with detection device in a distance, keep geo-stationary.
S3) metal detecting device carries out metal information identification；Electromagnetic induction coil produces balanced electromagnetic field and tested metal is formed electromagnetism covering.The sensing of tested metal produces vortex flow and consequent secondary magnetic field affects induction field, makes to receive non-equilibrium electromagnetic field on receiving coil.On receiving coil produce magnetic induction signal entering signal collection, amplify, filter and Analog-digital Converter laggard row number process.
S4) instruction of metal signal acousto-optic is extracted；Metal signal is carried out data acquisition, relative analysis, signal extraction, produces acousto-optic instruction.
S5) characteristic preserved to data base and return normal operating conditions.Confirm to complete the extraction to metallic character information, this metal can be identified when again detecting metalloid.
Further, metal detecting device described in step S3 carries out the successful Rule of judgment of metal information identification for detecting stable significantly signal:
If detecting stable significantly signal, then enter S4；If detection time did not also detect stable significantly signal more than 1 minute, then this metal detection device judges this time not carry out study and the setting of metallic character to be checked, exits this process and carries out detection warning with the warning message of previous setting.
Preferably, described detecting area is 0.1m-1m with the distance range of detection equipment.
In sum, the inventive method can be summarized as follows:
Open metal detecting device, electromagnetic induction coil the electromagnetic field produced produces a balanced electromagnetic field to receiving coil.Metal needs being set to warning metal types is placed in detecting area, and with detection device in a distance, keeps geo-stationary.Electromagnetic induction coil produces balanced electromagnetic field and tested metal is formed electromagnetism covering.The sensing of tested metal produces vortex flow and consequent secondary magnetic field affects induction field, makes to receive non-equilibrium electromagnetic field on receiving coil.On receiving coil produce magnetic induction signal entering signal collection, amplify, filter and Analog-digital Converter laggard row number process.This metal signal is carried out data acquisition, relative analysis, signal extraction, this metallicity information is preserved to data base, and produce acousto-optic instruction.Confirm to complete the extraction to metallic character information, this metal can be identified when again detecting metalloid.
Employing the beneficial effects of the present invention is: the present invention is a kind of equipment based on metal detection technology and the method that special metal is carried out Intelligent Recognition study, the special metal needing detection to report to the police can be carried out Intelligent Recognition extraction, tested metal only need to be positioned over the scope such as 0.1m-1m scope of detection region certain distance.Detecting devices by automatically metal signal being acquired, digital quantization, analyze, contrast, extract, be digitized the special metal information of extraction storing.The process being identified metal extracting is simple and quick, and accuracy is high.By simplifying method to set up, reduce special metal detecting devices operator and the requirement of relevant device.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of special metal detecting devices being identified different metal of the present invention.
Fig. 2 is the flow chart of the special metal identification learning method of a kind of special metal detecting devices in the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, this patent is further explained explanation.Accompanying drawing being merely cited for property explanation, it is impossible to be interpreted as the restriction to this patent；In order to the present embodiment is more preferably described, some parts of accompanying drawing have omission, zoom in or out；To those skilled in the art, in accompanying drawing, some known features and explanation thereof may will be understood by omission.
As depicted in figs. 1 and 2, a kind of special metal detecting devices being identified different metal that this patent provides is for being identified different metal, and described special metal detecting devices includes detector unit 10, processing unit 20 and the interactive unit 30 being sequentially connected with.It is also proposed that based on this special metal detecting devices set up a kind of simple, need not the learning method of the special metal identification that any Professional knowledge can also be set.By this learning method, the characteristic parameter of metal to be detected is gathered and stores by metal detection device automatically, and in follow-up detection process, using this parameter as warning correction data.By special metal identification learning, alarm device can be simplified, reduce the requirement to operator, realize intelligentized control.
Described detector unit 10 includes electromagnetic induction coil 11 and 12, receiving coil 13, alignment coil 14, signal output apparatus, signal acquisition circuit and signal calibration circuit, described electromagnetic induction coil 11 and 12 is connected with signal output apparatus, receiving coil 13 is connected with signal acquisition circuit, and alignment coil 14 is connected with calibration circuit.The receiving coil 13 of described detector unit is single or multiple array arrangement, and the unlike signal being switched the generation of multiple receiving coil by signal switching circuit is exported to signal acquisition circuit.And described electromagnetic induction coil 11 and 12 is made up of the coil of two diverse locations, for producing an electromagnetic field to receiving coil 13 balance；When metal is near electromagnetic induction coil 11 and 12, and electromagnetic field will lose original balance.Described receiving coil 3 is for receiving the electromagnetic signal that electromagnetic induction coil produces, and when the electromagnetic field disequilibrium of electromagnetic induction coil, produced electromagnetic signal will change.
Alignment coil 14 is connected with signal calibration circuit.Described alignment coil 14 is used for disturbing electromagnetic field to make electromagnetic field disequilibrium, and on receiving coil, 13 produce a stable calibration signal.Described calibration circuit is for exporting to calibrating circuit the calibration signal response of input.
Signal output apparatus includes D/A conversion circuit, amplifier or the power amplifier being sequentially connected with, for signal being amplified output to electromagnetic induction coil.Described signal acquisition circuit includes amplifier, wave filter and the D/A conversion circuit being sequentially connected with, for multiple signals that multiple receiving coils are exported carry out signals collecting, switch, amplify, filter, analog-digital conversion and digital signal export.
Described processing unit 20 includes signal processing circuit and the data base being sequentially connected with, and described data base is made up of data storage circuitry.Signal processing unit for carrying out feature extraction, comparing and identify to the digital signal of signal acquisition circuit input, and judges according to the threshold data output in data base.Data base is made up of data storage circuitry, and storage has the characteristic information of different metal, and can store mutually with external equipment, is contrasted by information, can identify metal more accurately.
Described interactive unit 30 includes parallel connected indicating circuit and data interaction circuit, and described indicating circuit is made up of sound, light and vibrating sensor, for providing instruction to the judgement of signal processing circuit output.Described data interaction circuit is made up of data transmission circuits such as serial ports.
Based on above-mentioned special metal detecting devices, this patent proposes a kind of special metal identification learning method simultaneously, Fig. 2 is a kind of in the present embodiment special metal to carry out based on metal detection technology Intelligent Recognition the flow chart of method being distinguish between, and the method comprises the steps:
S1) mode using start to automatically set opens metal detecting device；Setting device is after the power-up in one minute, do warning metal identification information learning setting up procedure, start metal detection device, equipment carries out power-on self-test judgement, the alternating electromagnetic field produced by electromagnetic induction coil 11 and electromagnetic induction coil 12 is comprehensive mutually, receiving coil 13 is produced a signal level off to zero balanced electromagnetic field.
S2) needs are set to the metal of warning metal types be placed in detecting area, and with detection device at a distance of about 0.2 meter, keep geo-stationary.
S3) metal detecting device carries out metal information identification；Electromagnetic induction coil 11 and 12 produces balanced electromagnetic field and tested metal is formed electromagnetism covering.The sensing of tested metal produces vortex flow and consequent secondary magnetic field affects induction field, makes to receive on receiving coil 13 non-equilibrium electromagnetic field.On receiving coil 13 produce magnetic induction signal entering signal collection, amplify, filter and Analog-digital Converter laggard row number process.
S4) instruction of metal signal acousto-optic is extracted；Metal signal is carried out data acquisition, relative analysis, signal extraction, produces acousto-optic instruction.
S5) characteristic preserved to data base and return normal operating conditions.Confirm to complete the extraction to metallic character information, this metal can be identified when again detecting metalloid.The metal signal of the present embodiment preserves to data base and can carry out data communication by data transfer or setting with external equipment.
Metal detecting device described in step S3 carries out the successful Rule of judgment of metal information identification for detecting stable significantly signal:
If detecting stable significantly signal, then enter S4；If detection time did not also detect stable significantly signal more than 1 minute, then this metal detection device judges this time not carry out study and the setting of metallic character to be checked, exits this process and carries out detection warning with the warning message of previous setting.
The metal species information extracting method of the present embodiment can carry out Intelligent Recognition extraction to existing metal, and tested metal only need to be positioned over the scope of detection region certain distance.Detection device by automatically metal signal being acquired, digital quantization, analyze, contrast, extract, the special metal information of extraction is digitized storage.The process being identified metal extracting is quick, and operational approach is simple, and accuracy is high.
Obviously, above-described embodiment of this patent is only for clearly demonstrating this patent example, and is not the restriction of the embodiment to this patent.Can also make other changes in different forms on the basis of the above description, here without also cannot all of embodiment be given exhaustive.Any amendment, equivalent and the improvement etc. made within all spirit at this patent and principle, within should be included in the protection domain of patent claims.
Claims (10)
1. a special metal detecting devices, for being identified different metal, it is characterised in that include detector unit, the place being sequentially connected with
Reason unit and interactive unit.
Special metal detecting devices the most according to claim 1, it is characterised in that described detector unit includes electromagnetic induction coil, reception
Coil, alignment coil, signal output apparatus, signal acquisition circuit and signal calibration circuit, described electromagnetic induction coil is connected with signal output apparatus,
Receiving coil is connected with signal acquisition circuit, and alignment coil is connected with signal calibration circuit.
Special metal detecting devices the most according to claim 2, it is characterised in that described electromagnetic induction coil is by the line of two diverse locations
Circle composition.
Special metal detecting devices the most according to claim 2, it is characterised in that the receiving coil of described detector unit is single or multiple
Array arrangement, the unlike signal being switched the generation of multiple receiving coil by signal switching circuit is exported to signal acquisition circuit.
Special metal detecting devices the most according to claim 2, it is characterised in that described signal output apparatus includes the numeral being sequentially connected with
Analog conversion circuit, amplifier；Described signal acquisition circuit includes amplifier, wave filter and the D/A conversion circuit being sequentially connected with.
Special metal detecting devices the most according to claim 1, it is characterised in that described processing unit includes the signal processing being sequentially connected with
Circuit and data base, described data base is made up of data storage circuitry.
Special metal detecting devices the most according to claim 1, it is characterised in that described interactive unit includes parallel connected indicating circuit
With data interaction circuit, described indicating circuit is made up of sound, light and vibrating sensor, and described data interaction circuit is by data transmission circuit groups such as serial ports
Become.
8. special metal identification learning method based on the special metal detecting devices described in any one of claim 1 to 7, it is characterised in that should
Method comprises the steps:
S1) mode that button, remote controller set or start automatically sets is used to open metal detecting device；
S2) needs are set to the metal of warning metal types be placed in detecting area, keep geo-stationary；
S3) metal detecting device carries out metal information identification；
S4) instruction of metal signal acousto-optic is extracted；
S5) characteristic preserved to data base and return normal operating conditions.
Special metal identification learning method the most according to claim 8, it is characterised in that metal detecting device described in step S3 is carried out
The successful Rule of judgment of metal information identification is for detecting stable significantly signal.
Special metal identification learning method the most according to claim 8, it is characterised in that described detecting area and the distance range of detection equipment
For 0.1m-1m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610177368.4A CN105842742A (en) | 2016-03-28 | 2016-03-28 | Specific metal detecting device and specific metal intelligent identification learning method |
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| CN201610177368.4A CN105842742A (en) | 2016-03-28 | 2016-03-28 | Specific metal detecting device and specific metal intelligent identification learning method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106896414A (en) * | 2017-01-23 | 2017-06-27 | 华北水利水电大学 | A kind of passive type array magnetic induction antenna assembly |
| CN107065021A (en) * | 2017-02-28 | 2017-08-18 | 无锡小天鹅股份有限公司 | The metal detecting device of clothes treatment device and clothes treatment device |
| CN111290032A (en) * | 2020-03-11 | 2020-06-16 | 中国石油大学(华东) | Electromagnetic-based intelligent stratum metal identification device and identification method |
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| CN103733090A (en) * | 2011-07-08 | 2014-04-16 | 梅特勒-托利多安全线有限公司 | Metal detector for production and packaging lines |
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