CN206038925U - Divide regional metal detector - Google Patents
Divide regional metal detector Download PDFInfo
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- CN206038925U CN206038925U CN201621024251.4U CN201621024251U CN206038925U CN 206038925 U CN206038925 U CN 206038925U CN 201621024251 U CN201621024251 U CN 201621024251U CN 206038925 U CN206038925 U CN 206038925U
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Abstract
The utility model relates to a divide regional metal detector belongs to the check out test set field. Adopt this divide regional metal detector, its coil module includes transmitting coil group and receiving coil group, and transmitting coil group and receiving coil group include quantity the same and a plurality of transmitting coil and receiving coil relative setting one by one respectively, each transmitting coil transmission signal of each emission member drive, and the signal that comes from each receiving coil is received to each receiving -member, data processing module generates each carrier signal, acquires each received signal from each receiving -member, and calculate with each a plurality of subregion testing result that correspond transmitting coil and receiving coil to realize dividing area detection, and then can reduce or improve and detect the precision at appointed position, obtain detection precision higher relatively, put forward the recall rate of high metal foreign matter, just the utility model discloses a divide regional metal detector simple structure, low cost divides regional metal to detect control method and realizes that the mode is simple and convenient, and application scope is comparatively extensive.
Description
Technical field
This utility model is related to testing equipment field, more particularly to metal detecting apparatus field, specifically refers to a kind of subregion
Domain metal detection machine.
Background technology
Metal detector of the prior art, generally using a kind of probe of up-down structure as shown in Figure 1.Which is typically tied
Structure is probe the latter half as shown in figure 3, coiling transmitting coil；Top half is as shown in Fig. 2 coiling receiving coil.Divide up and down
From probe distributed architecture be conducive to passing through for large volume product to be detected, be more suitable for the detection of components in high volume products.
However, in these components in high volume products, often existing due to the architectural feature of product itself, the product at its some position
Situation of the product signal more than the product signal at other positions.In order that the product of this skewness can be then needed by probe
The accuracy of detection popped one's head in is reduced, a large amount of false alarms will otherwise occur.Thus the problem brought is to inevitably result in
The occurrence of missing inspection, so that ensure recall rate and reduce false alarm to become the contradiction for being difficult to reconcile, to Product checking work
Adversely affect.
Therefore, provided that one kind can reduce or improve accuracy of detection in appointed part, while obtaining of a relatively high
Accuracy of detection, the metal detection machine for improving the recall rate of metallic foreign body become this area problem demanding prompt solution.
Utility model content
The purpose of this utility model is to overcome above-mentioned shortcoming of the prior art, there is provided a kind of coil module includes quantity
The multiple transmitting coils of identical and receiving coil such that it is able to which subregion is detected, and can reduce or improve in appointed part
Accuracy of detection, while obtaining of a relatively high accuracy of detection, improves the recall rate of metallic foreign body, and simple structure, using simplicity,
Subregion metal detection machine applied widely.
In order to realize above-mentioned purpose, subregion metal detection machine of the present utility model has following composition：
The subregion metal detection machine, including coil module, connects at the signal generation module and data of the coil module
Reason module, and connect the metal judge module of the data processing module, described coil module include transmitting winding group and
Receiving coil group, described transmitting winding group and receiving coil group include the multiple transmitting coils of quantity identical respectively and receive line
Enclose, and described transmitting coil and receiving coil are oppositely arranged one by one, described signal generation module connects sending out described in each
Ray circle, the signal generation module and receiving coil are all connected with described data processing module.
In the subregion metal detection machine, described data processing module includes multi-data processing unit, described in each road
The input of data processing unit connect a pair of transmitting coils being oppositely arranged and receiving coil corresponding to which, each road respectively
The outfan of described data processing unit is all connected with described metal judge module.
In the subregion metal detection machine, the data processing unit described in each road includes multiplier and gain and filtered electrical
Road, the input of the multiplier connect a pair of transmitting coils and receiving coil corresponding to which, and the outfan of the multiplier connects
Connect the metal described in the outfan connection of the input of described gain and filter circuit, the gain and filter circuit and judge mould
Block.
The subregion metal detection machine, also including precision set module, described precision set module connection is each described
The gain of data processing unit and filter circuit, to according to each described gain of operating and setting and the gain of filter circuit ginseng
Number.
The subregion metal detection machine of the utility model is employed, its coil module includes transmitting winding group and receiving coil
Group, described transmitting winding group and receiving coil group include the multiple transmitting coils of quantity identical and receiving coil, and institute respectively
The transmitting coil and receiving coil stated is oppositely arranged one by one, and each emission element drives each transmitting coil transmission signal, each acceptance division
Part receives the signal from each receiving coil；Data processing module generates each carrier signal, obtains each reception from each receiving part
Signal；And calculate and each pair of transmitting coil multiple Subarea detecting results corresponding with receiving coil such that it is able to realize subregion
Domain is detected, and and then, can carry while obtaining of a relatively high accuracy of detection in appointed part reduction or raising accuracy of detection
The recall rate of high metal foreign body, and metal detection machine simple structure in subregion of the present utility model, with low cost, implementation letter
Just, the scope of application is relatively broad.
Description of the drawings
Fig. 1 is the sonde configuration schematic diagram of up-down structure in prior art.
Fig. 2 is the receiving coil structural representation of probe of the prior art.
Fig. 3 is the transmitting coil structural representation of probe of the prior art.
Fig. 4 is metal detection machine coil module structural representation in subregion of the present utility model.
Fig. 5 is the schematic flow sheet of subregion metal detection machine of the present utility model control method in the application.
Fig. 6 is metal detection machine sonde configuration schematic diagram in subregion of the present utility model.
Fig. 7 is metal detection machine circuit structure block diagram in subregion of the present utility model.
Fig. 8 is the structured flowchart of metal detection machine data processing unit in subregion of the present utility model.
Specific embodiment
In order to be more clearly understood that technology contents of the present utility model, describe in detail especially exemplified by following examples.
Refer to shown in Fig. 4, be metal detection machine coil module structural representation in subregion of the present utility model.
In one embodiment, the subregion metal detection machine includes coil module, connects the signal of the coil module
Generation module (emission element) and data processing module (data processor), and connect the metal of the data processing module
Judge module (judgement part).Wherein, described coil module is as shown in figure 4, including transmitting winding group and receiving coil group, institute
The transmitting winding group stated and receiving coil group include the multiple transmitting coils of quantity identical and receiving coil respectively, and described send out
Ray circle and receiving coil are as shown in fig. 6, be oppositely arranged one by one.As shown in fig. 7, described signal generation module connects each institute
The transmitting coil stated, the signal generation module and receiving coil are all connected with described data processing module.
The subregion metal detection control method realized using the subregion metal detection machine described in above-mentioned embodiment, such as
Shown in Fig. 5, comprise the following steps：
(1) examined object is made by between described transmitting winding group and described receiving coil group；
(2) the data processing mould described in generates carrier signal, obtains each reception signal from each described receiving coil；
(3) data processing module described in goes out and each pair of emission lines according to described carrier signal and each signal of change that receives
Circle multiple Subarea detecting results corresponding with receiving coil, and described multiple Subarea detecting results are sent to described metal
Judge module；
(4) the metal judge module described in judges whether to report to the police according to described multiple Subarea detecting results.
In more preferably embodiment, described data processing module includes multi-data processing unit, described in each road
The input of data processing unit connect a pair of transmitting coils being oppositely arranged and receiving coil corresponding to which, each road respectively
The outfan of described data processing unit is all connected with described metal judge module.
The subregion metal detection control realized using the subregion metal detection machine described in above-mentioned more preferably embodiment
In method processed,
Described step (3) is specially：
Data processing unit described in each road goes out according to each self-corresponding carrier signal and reception signal of change to be sent out with this pair
Ray circle Subarea detecting result corresponding with receiving coil, and the Subarea detecting result is sent to described metal judge mould
Block.
In preferred embodiment, as shown in figure 8, the data processing unit described in each road includes multiplier and increasing
Benefit and filter circuit, the input of the multiplier connect a pair of transmitting coils and receiving coil corresponding to which, the multiplier
The described gain of outfan connection and filter circuit input, the described gold of the gain and the outfan connection of filter circuit
Category judge module.The subregion metal detection machine also includes precision set module (packet precision set), described precision set
The gain of each described data processing unit of module connection and filter circuit, to according to each described gain of operating and setting and filter
The gain parameter of wave circuit.
The subregion metal detection control realized using the subregion metal detection machine described in above-mentioned preferred embodiment
In method processed, described step (3) is specially：
The multiplier of the n-th circuit-switched data processing unit obtains multiplier output signal according to following formula：
Wherein, A1 receives signal amplitude for the road, and B is the road carrier signal amplitude, and f receives signal for the road to be believed with carrier wave
Number frequency, ψ is the phase place of the road transmission signal, and ψ+α are the phase place of the road carrier signal, and ψ+δ are the phase that the road receives signal
Position,
The gain of the n-th circuit-switched data processing unit and filter circuit obtain gain and filter circuit output signal according to following formula：
Wherein, K1For the road gain and the gain parameter of filter circuit；
The gain of the n-th circuit-switched data processing unit and filter circuit output signal also can use following formula to express：
A1_P*sin(2*π*f*t+ψ+δ+θp(t))
Wherein, A1_P and θ p (t) is the disturbance that product or metal bring.
In actual applications, subregion metal detection machine of the present utility model
Data processing module receives packet precision set (by gain parameter), so as to the N groups signal to receiving is carried out
Differential process.Additionally, data processing module can enter to 1～N of transmitting winding group according further to packet precision set
The signal intensity of row active is adjusted.Signal data Jing after data processing module process is transferred into judgement part and is judged.
Illustrate as a example by following transmitting winding group 1 and receiving coil group 1：
Transmitting winding group 1 produces amplitude for the sine wave signal SIN_T that A, frequency are f, phase place is ψ and via transmitting coil
1 transmitting.SIN_T is represented with formula A*sin (2* π * f*t+ ψ).
It is that B, the sine wave signal SIN_CARRIER1 that frequency is f, phase place is ψ+α feeding are taken advantage of that carrier signal 1 is amplitude
Musical instruments used in a Buddhist or Taoist mass 1.SIN_CARRIER1 is represented with formula B*sin (2* π * f*t+ ψ+α).
Receiving coil 1 is excited by signal SIN_T and output amplitude is A1, the sinusoidal signal that frequency is f, phase place is ψ+δ
SIN_R.SIN_R is represented with formula A1*sin (2* π * f*t+ ψ+δ).
SIN_R and SIN_CARRIER1 is input in multiplier 1 jointly, 1 output signal SIN_M1 of multiplier.SIN_M1 with
FormulaTo represent.
SIN_M1 is changed into data SIN_1 through gain, filter part 1.SIN_1 is with formulaCome
Represent.Wherein K1By being grouped the gain parameter that precision set is determined.SIN_1 will be sent to judgement part and be judged to determine
Whether there is metal to pass through and whether need to exclude.
Either qualified products or metallic foreign body, all will produce different degrees of shadow to the electromagnetic field in the range of probe
Ring.This causes signal SIN_R to be changed into A1_P*sin (2* π * f*t+ ψ+δ+θp(t)).Further, this will cause signal SIN_1 to become
ForWherein, A1_P and θpT () is the disturbance that product or metal bring.
Detection threshold value THRES is preset with judgement part, when SIN1_1 is more than THRES, is judged as finding gold
Category foreign body, and then perform the operation such as warning, exclusion.If each group gain set in packet precision set is the same, visit
The metal that head can be detected is determined by the maximum level of the disturbance brought by product, if the disturbance brought by certain metal is little
In the disturbance brought by product, then the metal cannot be detected.
The product larger for volume, can be divided into some, and the disturbance power brought by each part differs.For
The stronger part of disturbance, by being grouped precision set by gain parameter KNIt is set to relatively small；The part weaker for disturbance,
By being grouped precision set by gain parameter KNIt is set to relatively large.So, for same detection threshold value THRES, producing
The metal order of magnitude that can be detected in product different parts will be variant.To the gain parameter of the larger part of probe disturbance compared with
It is little, thus the metal grades of detection are just larger；It is larger to the gain parameter of the less part of probe disturbance, thus the metal of detection
Grade is just less.In general, compared with original metal detection principle, improved method is not changing probe absolute precision water
In the case of flat (detection of 100% metallic foreign body), the relative accuracy level of probe is improve, it is both using this utility model, less
Metal grades in some position missing inspections, but may can be detected at other positions.
The subregion metal detection machine of the utility model is employed, its coil module includes transmitting winding group and receiving coil
Group, described transmitting winding group and receiving coil group include the multiple transmitting coils of quantity identical and receiving coil, and institute respectively
The transmitting coil and receiving coil stated is oppositely arranged one by one, and each emission element drives each transmitting coil transmission signal, each acceptance division
Part receives the signal from each receiving coil；Data processing module generates each carrier signal, obtains each reception from each receiving part
Signal；And calculate and each pair of transmitting coil multiple Subarea detecting results corresponding with receiving coil such that it is able to realize subregion
Domain is detected, and and then, can carry while obtaining of a relatively high accuracy of detection in appointed part reduction or raising accuracy of detection
The recall rate of high metal foreign body, and metal detection machine simple structure in subregion of the present utility model, with low cost, implementation letter
Just, the scope of application is relatively broad.
In this description, this utility model is described with reference to its specific embodiment.But it is clear that still can be with
Various modification can be adapted and conversion is without departing from spirit and scope of the present utility model.Therefore, specification and drawings are considered as
It is illustrative and not restrictive.
Claims (4)
1. a kind of subregion metal detection machine, which includes coil module, connects the signal generation module and data of the coil module
Processing module, and connect the metal judge module of the data processing module, it is characterised in that
Described coil module includes transmitting winding group and receiving coil group, described transmitting winding group and receiving coil group difference
Including the multiple transmitting coils of quantity identical and receiving coil, and described transmitting coil and receiving coil are oppositely arranged one by one,
Described signal generation module connects the transmitting coil described in each, and the signal generation module and receiving coil are all connected with described
Data processing module.
2. subregion metal detection machine according to claim 1, it is characterised in that described data processing module includes many
Circuit-switched data processing unit, the input of the data processing unit described in each road connect a pair be oppositely arranged corresponding to which respectively
Transmitting coil and receiving coil, the outfan of the data processing unit described in each road are all connected with described metal judge module.
3. subregion metal detection machine according to claim 2, it is characterised in that the data processing unit described in each road is equal
Including multiplier and gain and filter circuit, the input of the multiplier connects a pair of transmitting coils and reception corresponding to which
Coil, the input of gain and filter circuit described in the outfan connection of the multiplier, the gain and the output of filter circuit
The described metal judge module of end connection.
4. subregion metal detection machine according to claim 3, it is characterised in that also including precision set module, described
The each described data processing unit of precision set module connection gain and filter circuit, to according to operating and setting is each
Gain and filter circuit gain parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621024251.4U CN206038925U (en) | 2016-08-31 | 2016-08-31 | Divide regional metal detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621024251.4U CN206038925U (en) | 2016-08-31 | 2016-08-31 | Divide regional metal detector |
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| Publication Number | Publication Date |
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| CN206038925U true CN206038925U (en) | 2017-03-22 |
Family
ID=58297478
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| CN201621024251.4U Active CN206038925U (en) | 2016-08-31 | 2016-08-31 | Divide regional metal detector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226826A (en) * | 2016-08-31 | 2016-12-14 | 上海太易检测技术有限公司 | Subregion metal detection machine and subregion metal detection control method |
| CN109541698A (en) * | 2019-01-28 | 2019-03-29 | 上海太易检测技术有限公司 | A kind of resultant metal foreign matter detection system and method based on motion profile |
| CN111427094A (en) * | 2020-05-15 | 2020-07-17 | 苏州太易检测设备有限公司 | Metal detector and receiving circuit and detection circuit thereof |
-
2016
- 2016-08-31 CN CN201621024251.4U patent/CN206038925U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226826A (en) * | 2016-08-31 | 2016-12-14 | 上海太易检测技术有限公司 | Subregion metal detection machine and subregion metal detection control method |
| CN106226826B (en) * | 2016-08-31 | 2019-05-31 | 上海太易检测技术有限公司 | Subregion metal detection machine and subregion metal detection control method |
| CN109541698A (en) * | 2019-01-28 | 2019-03-29 | 上海太易检测技术有限公司 | A kind of resultant metal foreign matter detection system and method based on motion profile |
| CN109541698B (en) * | 2019-01-28 | 2024-02-09 | 上海太易检测技术有限公司 | Product metal foreign matter detection system and method based on motion trail |
| CN111427094A (en) * | 2020-05-15 | 2020-07-17 | 苏州太易检测设备有限公司 | Metal detector and receiving circuit and detection circuit thereof |
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