CN205720714U - A kind of detector - Google Patents
A kind of detector Download PDFInfo
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- CN205720714U CN205720714U CN201620244564.4U CN201620244564U CN205720714U CN 205720714 U CN205720714 U CN 205720714U CN 201620244564 U CN201620244564 U CN 201620244564U CN 205720714 U CN205720714 U CN 205720714U
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Abstract
The utility model discloses a kind of detector, including main structure body and main frame, main frame connects has transmitting coil and receiving coil, transmitting coil and receiving coil to be positioned in the cavity of main structure body, it is characterised in that be marked with implant in the cavity of described main structure body.Detector of the present utility model improves measuring stability and the accuracy of detector, improves efficiency and the precision of detection.
Description
Technical field
This utility model relates to metal detector technical field, in particular to the detector of high measuring stability.
Background technology
Detector is widely used in every field.AT STATION, airport, amusement place and other places, detector all can be installed.Whether detector detects on the person in a non-contact manner with metal.Such as, it is one of which detector by formula detector, equipped with transmitting coil and receiving coil in the cavity of the main structure body of detector.When having metal near detector when, the eddy current effect that metal produces can affect the magnetic field around detector, and at this moment receiving coil can produce faradic current, and voltage changes therewith.Situation is changed, it can be determined that whether with the presence of metallics by the voltage of detection receiving coil.
But, detector can run into various problem during using.Such as, using detector under different ambient temperatures or humidity, the material of detector may produce the phenomenon expanded with heat and contract with cold, thus have influence on the relative position of transmitting coil or receiving coil.Or, detector, in moving process, can make transmitting coil or receiving coil produce the skew of position, after at this time the relative position between transmitting coil with receiving coil changes unavoidably, the inductive voltage value of test receiving coil will change, thus causes the inaccurate of test result.It is thus desirable to the detector of prior art is improved, to improve stability and the accuracy of detector test.
Utility model content
Task of the present utility model is to provide the detector with high measuring stability and degree of accuracy of a kind of novel improved, even if making detector in different environment, especially in the environment that temperature humidity differs greatly, remains able to work accurately and effectively.
For achieving the above object, this patent adopts the following technical scheme that.
A kind of detector, including main structure body and main frame, main frame connects has transmitting coil and receiving coil, transmitting coil and receiving coil to be positioned in the cavity of main structure body, it is characterised in that be marked with implant in the cavity of described main structure body.
Preferably, the outside of main structure body is provided with at least one metal parts, for making the inductive voltage value of receiving coil reach predetermined scope.
Preferably, described implant is expanded material.
Preferably, described expanded material is polyurethane foam material.
Preferably, described receiving coil includes left coil and right coil, left coil and right coil Opposite direction connection, and left coil is symmetrically placed with right coil.
Preferably, described metal parts is Copper Foil, aluminium foil or iron plate.
Detector of the present utility model works when using in different environments, the stability can improve through experimental verification repeatedly, kept detector to detect and precision, and the situation reducing erroneous judgement and error in data occurs.
Accompanying drawing explanation
Fig. 1 is that this utility model detector is as a kind of schematic diagram by formula detector embodiment；
Fig. 2 a is transmitting coil and one embodiment schematic diagram of receiving coil of this utility model detector；
Fig. 2 b is one embodiment schematic diagram of receiving coil of this utility model detector；
Fig. 3 is the embodiment schematic diagram that in this utility model detector, metal parts is put；
Fig. 4 is the flow chart of one embodiment of production method of this utility model detector.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings, but protection domain of the present utility model is not limited to the scope of embodiment statement.
Detector described in the utility model is the device of detection metal object, is divided into hand-held detector and by specific constructive form such as formula detectors 100.
Below with by formula detector 100 as an example, specifically describing the aufbauprinciple of this utility model detector, same principle is applicable to hand-held detector.
Fig. 1 is that the one of this utility model detector is by formula detector schematic diagram.Side door part 101, header portion 102 is included by formula detector 100 main structure body.Main frame (not shown) may be installed in header portion 102, is used for controlling, sends pumping signal and be used for measuring inductive voltage value to transmitting coil 201, receiving coil 202.Transmitting coil 201 and receiving coil 202 are positioned in the cavity of main structure body.It is arranged on specifically in side door part 101.Position and number that transmitting coil 201 and receiving coil 202 are arranged are different according to the needs of user and practical situation.
In other words, detector of the present utility model, including main structure body and main frame, main frame connects has transmitting coil 201 and receiving coil 202, transmitting coil 201 and receiving coil 202 to be positioned in the cavity of main structure body, is marked with implant in the cavity of main structure body.
In the prior art, common detector production process, need, by zeroing operation, i.e. to be sent prearranged signals by transmitting coil 201, the inductive voltage value that receiving coil 202 receives is adjusted within the scope of certain, such as 300mV.Too high inductive voltage value can cause detector to there will be overpressure situation during work, and it is saturated that overpressure situation can make main frame amplifying circuit produce, the accuracy of impact test.Therefore, zeroing is needed to make inductive voltage value be less than certain magnitude of voltage when of producing detector.Concrete, the inductive voltage value of test receiving coil 202 can be the peak-to-peak value of the magnitude of voltage of test receiving coil 202.
After injecting implant, if the inductive voltage value that receiving coil 202 receives is unsatisfactory for the requirement of zeroing operation, at least one metal parts 301 it is provided with in the outside of main structure body, this metal parts 301 has been used for the operation that returns to zero, and makes the inductive voltage value of receiving coil 202 reach predetermined scope.In some embodiments, metal parts 301 can be Copper Foil, aluminium foil or iron plate.Metal parts 301 is placed on the outside of main structure body, can be parallel to the plane at receiving coil 202 place, it is also possible to be perpendicular to the plane at receiving coil 202 place.Metal parts 301 is placed near transmitting coil 201 and receiving coil 202, transmitting coil 201 the electromagnetism magnetic field excited can produce impact because of metal parts 301, thus affects the inductive voltage value that receiving coil 202 receives.
In this utility model practical operation, the position of the size of metal parts 301, quantity and setting all can affect the inductive voltage value of receiving coil 202 under zeroing state.The quantity of metal parts 301 can be one or more.Producers can be by repeatedly arranging the position of metal parts 301, and test metal parts 301 inductive voltage value of receiving coil 202 this position when returns to zero simultaneously, until the inductive voltage value of receiving coil 202 is adjusted within the scope of certain.
Preferably, detector implant is expanded material, and the effect of implant is for fixed transmission coil 201 and receiving coil 202.During actually used, expanded material can make the minimizing of deformation of transmitting coil 201 and receiving coil 202.Implant described in this patent should be the material of the characteristic that those do not affect transmitting coil 201 and receiving coil 202 normally works, such as polyurethane foam material.
Refer to transmitting coil 201 and 202 1 embodiment schematic diagrams of receiving coil that Fig. 2 a, Fig. 2 a is this utility model detector.In some embodiments, transmitting coil 201 and receiving coil 202 are placed on by side door part 101 cavity of formula detector 100, and transmitting coil 201 and receiving coil 202 are placed at grade, and transmitting coil 201 is arranged on the outside of receiving coil 202.Receiving coil 202 includes left coil 203 and right coil 204, left coil 203 and right coil 204 Opposite direction connection, and left coil 203 is symmetrically placed with right coil 204.
It it is an embodiment schematic diagram of the receiving coil 202 of this utility model detector with further reference to Fig. 2 b, Fig. 2 b.In order to describe simplicity, only drawing the schematic diagram of left coil 203 and right coil 204 coiling two circle, according to practical situation, the quantity of the number of turn can be any.Owing to left coil 203 and right coil 204 are also positioned in transmitting coil 201, therefore identical with by the magnetic line of force direction of right coil by left coil 203.According to the law of electromagnetic induction, do not have tested metal near when, the induced field current that left coil 203 produces with right coil 204 is in opposite direction, cancels each other.The receiving coil 202 of this design is within zeroing operation is easier to inductive voltage value is adjusted to certain limit.
On the other hand, it is provided that the production method of a kind of above-mentioned detector.Fig. 4 is the flow chart of an embodiment about this utility model detector production method.
With reference to Fig. 4, in step S401, transmitting coil 201 and receiving coil 202 are installed in the cavity of the main structure body of detector, be connected with main frame with receiving coil 202 by transmitting coil 201.The main structure body of described detector, according to practical situation needs, is designed with different shapes.
It is that this utility model detector one of which is by formula detector schematic diagram with further reference to Fig. 2, Fig. 2.Side door part 101, header portion 202 is included by the structural body portion of formula detector 100.Main frame (not shown) may be installed in header portion 102, is used for controlling, sending pumping signal to transmitting coil 201, measurement receiving coil 202 inductive voltage value.Transmitting coil 201 and receiving coil 202 may be installed in side door part 101.Position and number that transmitting coil 201 and receiving coil 202 are arranged are different according to the needs of user and practical situation.In order to carry out next step S402, the main structure body of detector leaves the inlet of implant.
In step S402, in the cavity of the main structure body of detector, inject implant.The effect of implant is for fixed transmission coil 201 and receiving coil 202.During actually used, make the minimizing of deformation of transmitting coil 201 and receiving coil 202.In some embodiments, implant selects expanded material, such as foamed glue (such as polyurethane foam glue).Implant should have does not affects transmitting coil 201 and characteristic that receiving coil 202 normally works.
In step S403, close the cavity of the main structure body of detector.In order to prevent implant from overflowing, after step S402, close the cavity of the main structure body of detector.
In the prior art, common detector production process, need, by zeroing operation, i.e. to be sent prearranged signals by transmitting coil 201, the inductive voltage value that receiving coil 202 receives is adjusted within the scope of certain, such as 300mV.Too high inductive voltage value can cause detector to there will be overpressure situation during work, and it is saturated that overpressure situation can make main frame amplifying circuit produce, the accuracy of impact test.Therefore, zeroing is needed to make inductive voltage value be less than certain magnitude of voltage when of producing detector.Concrete, the inductive voltage value of test receiving coil 202 can be the peak-to-peak value of the magnitude of voltage of test receiving coil 202.
Preferably, also include step (4) after step (3): at least one metal parts is set outside detector, adjusts metal parts position, make the inductive voltage value of receiving coil reach predetermined scope.
After injecting implant, when the inductive voltage value that receiving coil 202 receives is unsatisfactory for the standard of zeroing procedure calls, in step s 404, at least one metal parts 301 is set outside detector, adjust metal parts 301 position, make the inductive voltage value of receiving coil 202 reach predetermined scope.In some embodiments, metal parts 301 can be Copper Foil, aluminium foil or iron plate.Metal parts 301 is placed on the outside of the main structure body of detector, can be parallel to the plane at receiving coil 202 place, it is also possible to be perpendicular to the plane at receiving coil 202 place.Metal parts 301 is placed near transmitting coil 201 and receiving coil 202, transmitting coil 201 the electromagnetism magnetic field excited can produce impact because of metal parts 301, thus affects the inductive voltage value that receiving coil 202 receives.
In this utility model practical operation, the position of the size of metal parts 301, quantity and setting all can affect the inductive voltage value of receiving coil 202 under zeroing state.The quantity of metal parts 301 can be one or more.Producers can be by repeatedly arranging the position of metal parts 301, and test metal parts 301 inductive voltage value of receiving coil 202 this position when returns to zero simultaneously, until the inductive voltage value of receiving coil 202 is adjusted within the scope of certain.
In some embodiments, detector can arrange multiple receiving coil 202.Before metal parts 301 is set, first one of them receiving coil 202 inductive voltage value is measured.If measuring the value conformance with standard of this receiving coil 202, within the scope of certain, then, this receiving coil 202 can not carried out the zeroing correction of metal parts 301.
Preferably, further comprising the steps of between step S401 and step S402: to adjust the relative position of transmitting coil 201 and receiving coil 202, make the inductive voltage value of receiving coil reach predetermined scope.Before producers' injecting frothing material, operation of once returning to zero.The inductive voltage value that receiving coil 202 receives can be adjusted to, within the scope of certain, make the zeroing step described in step S404 be easier to operate to by first zeroing.
In the above-described embodiment, producers can be by adjusting the position of transmitting coil 201, adjust the position of receiving coil 202, or adjust transmitting coil 201 to return to zero with the relative position of receiving coil 202 simultaneously, the inductive voltage value of receiving coil 202 is tested, until the inductive voltage value of receiving coil 202 is adjusted within the scope of certain while adjusting position.In some embodiments, the method for zeroing it be also possible to use and changes the number of turn of transmitting coil 201 or receiving coil 202 and carry out.
Refer to transmitting coil 201 and 202 1 embodiment schematic diagrams of receiving coil that Fig. 2 a, Fig. 2 a is this utility model detector.In some embodiments, transmitting coil 201 and receiving coil 202 are placed on by the side door part 101 of formula detector 100, and transmitting coil 201 and receiving coil 202 are placed at grade, and transmitting coil 201 is arranged on the outside of receiving coil 202.Receiving coil 202 includes left coil 203 and right coil 204, left coil 203 and right coil 204 Opposite direction connection, and left coil 203 is symmetrically placed with right coil 204.
It is 202 1 embodiment schematic diagrams of receiving coil of this utility model detector with further reference to Fig. 2 b, Fig. 2 b.In order to describe simplicity, only drawing the schematic diagram of left coil 203 and right coil 204 coiling two circle, according to practical situation, the quantity of the number of turn can be any.Owing to left coil 203 and right coil 204 are also positioned in transmitting coil 201, therefore identical with by the magnetic line of force direction of right coil by left coil 203.According to the law of electromagnetic induction, do not have tested metal near when, the induced field current that left coil 203 produces with right coil 204 is in opposite direction, cancels each other.The receiving coil 202 of this design is within zeroing operation is easier to inductive voltage value is adjusted to certain limit.
It is the embodiment that in this utility model a kind of detector production method, metal parts 301 is put with reference to Fig. 3, Fig. 3.Two pieces of metal parts 301 for the receiving coil 202 that returns to zero shown in figure.Preferably, in carrying out step S404 operation, use the mode returned to zero from lower to upper, receiving coil 202 nethermost in the most some coils is carried out the operation that returns to zero, the most up completes the zeroing operation of other each receiving coils 202.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Skilled artisan would appreciate that, utility model 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 conceiving without departing from described utility model, 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 (7)
1. a detector, including main structure body and main frame, main frame connects has transmitting coil and receiving coil, transmitting coil and receiving coil to be positioned in the cavity of main structure body, it is characterised in that be marked with implant in the cavity of described main structure body.
Detector the most according to claim 1, is provided with at least one metal parts in the outside of main structure body, for making the inductive voltage value of receiving coil reach predetermined scope.
Detector the most according to claim 2, it is characterised in that described implant is expanded material.
Detector the most according to claim 3, it is characterised in that described expanded material is polyurethane foam material.
5. according to the detector described in any claim in claim 2-4, it is characterised in that described receiving coil includes left coil and right coil, left coil and right coil Opposite direction connection, and left coil is symmetrically placed with right coil.
Detector the most according to claim 5, it is characterised in that described metal parts is Copper Foil, aluminium foil or iron plate.
Detector the most according to claim 1, it is characterised in that described receiving coil includes left coil and right coil, left coil and right coil Opposite direction connection, and left coil is symmetrically placed with right coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620244564.4U CN205720714U (en) | 2016-03-25 | 2016-03-25 | A kind of detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620244564.4U CN205720714U (en) | 2016-03-25 | 2016-03-25 | A kind of detector |
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| CN205720714U true CN205720714U (en) | 2016-11-23 |
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| CN201620244564.4U Active CN205720714U (en) | 2016-03-25 | 2016-03-25 | A kind of detector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842743A (en) * | 2016-03-25 | 2016-08-10 | 东莞市华盾电子科技有限公司 | Detector and production method thereof |
| CN109212614A (en) * | 2017-06-30 | 2019-01-15 | 北京至感传感器技术研究院有限公司 | Stealthy safe examination system and safety check component suitable for open ground |
| CN113465748A (en) * | 2021-07-16 | 2021-10-01 | 衢州学院 | Blackbody cavity temperature sensor with stable emissivity |
-
2016
- 2016-03-25 CN CN201620244564.4U patent/CN205720714U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842743A (en) * | 2016-03-25 | 2016-08-10 | 东莞市华盾电子科技有限公司 | Detector and production method thereof |
| CN109212614A (en) * | 2017-06-30 | 2019-01-15 | 北京至感传感器技术研究院有限公司 | Stealthy safe examination system and safety check component suitable for open ground |
| CN113465748A (en) * | 2021-07-16 | 2021-10-01 | 衢州学院 | Blackbody cavity temperature sensor with stable emissivity |
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