CN218547016U

CN218547016U - Coil structure of through type detector and through type detector

Info

Publication number: CN218547016U
Application number: CN202221763334.0U
Authority: CN
Inventors: 陆国鹏; 王积东; 林伟杰
Original assignee: Dongguan Huadun Electronic Technology Co ltd
Current assignee: Dongguan Huadun Electronic Technology Co ltd
Priority date: 2022-05-06
Filing date: 2022-07-06
Publication date: 2023-02-28
Anticipated expiration: 2032-07-06

Abstract

The utility model discloses a coil structure of a through type detector and the through type detector, wherein the coil structure comprises a transmitting coil group which is arranged oppositely at two sides, and a middle channel is formed between the transmitting coil group and is used for passing a measured object; the single-side transmitting coil group comprises a matrix structure of at least two rows of coils and at least two columns of coils, wherein one row of coils comprises at least two coils, and one column of coils comprises at least two coils; the normal directions of two adjacent coils in the horizontal direction are opposite at the same moment, and the normal directions of two adjacent coils in the vertical direction are opposite at the same moment; in the three-dimensional space of the middle channel, the normal directions of the coils of the bilateral transmitting coil sets in the partial region are opposite, the normal directions of the coils of the bilateral transmitting coil sets in the partial region are the same, and electromagnetic fields in the directions of x, y and z are formed. The utility model provides high through type detector's detection reliability reduces the condition of leaking judgement.

Description

Coil structure of through type detector and through type detector

Technical Field

The utility model relates to a through type detector technical field especially relates to a coil structure and through type detector of through type detector.

Background

The detector is widely applied to various fields, and in order to prevent workers from carrying metal panels or waste materials produced in a factory to go out in a metal processing factory or a raw material smelting factory, the installation of a through type detector is usually selected to detect the workers; in some institutional units, examinations and other occasions, the pass-through detector is also installed to forbid the relevant people to take the mobile phone in and out. In the use occasion of the through type detector, a large amount of rapid people flow determines that the detection effect of the detector must be efficient and reliable, however, in the existing traditional detection technology, coils are respectively arranged in door plates on two sides of the through type detector, magnetic lines of force in the detector are distributed from one door plate to the other side and basically along the horizontal direction, when a detected person carries a metal panel or a mobile phone, the maximum section of the metal panel or the mobile phone is kept parallel to the horizontal magnetic line of force in the process of passing through the through type detector, at this time, the section of the metal panel or the mobile phone, which is penetrated through by the horizontal magnetic line of force at the side, is very small, so that the generated eddy current effect is small, a weak eddy current signal is detected, the detector is possibly subjected to a missing judgment phenomenon, and the reliability of a detection result is greatly reduced, namely, the traditional through type detector cannot ensure that the detection can be detected under any posture of the metal panel or the mobile phone.

SUMMERY OF THE UTILITY MODEL

The utility model provides a coil structure and through type detector of through type detector improves the detection reliability of through type detector, reduces the condition of lou judging.

According to one aspect, the present invention provides a coil structure of a through type detector, which is characterized by comprising: the device comprises transmitting coil groups which are oppositely arranged on two sides, and a middle channel is formed between the transmitting coil groups and is used for passing a measured object;

the single-side transmitting coil group comprises a matrix structure of at least two rows of coils and at least two columns of coils, wherein one row of coils comprises at least two coils, and one column of coils comprises at least two coils; the normal directions of two adjacent coils in the horizontal direction are opposite at the same moment, and the normal directions of two adjacent coils in the vertical direction are opposite at the same moment;

in the three-dimensional space of the middle channel, the normal directions of the coils of the bilateral transmitting coil sets in the partial region are opposite, the normal directions of the coils of the bilateral transmitting coil sets in the partial region are the same, and electromagnetic fields in the directions of x, y and z are formed.

In the scheme, one unilateral transmitting coil group has a matrix coil layout, and because the normal directions of two adjacent coils in the horizontal direction of the unilateral transmitting coil group are opposite at the same time, the normal direction of the other unilateral transmitting coil group is respectively the same as the normal directions of the two adjacent coils in the horizontal direction, and the same time, the same direction and the same direction are opposite; the x-axis horizontal magnetic lines are generated in the same direction, the normal directions of the coils of the bilateral transmitting coil sets in a partial region are the same, the v-axis horizontal magnetic lines are formed in the opposite direction, and the normal directions of the coils of the bilateral transmitting coil sets in the partial region are opposite.

The normal direction of the other unilateral transmitting coil group is respectively the same as the normal directions of the two adjacent coils in the horizontal direction, namely the same direction and the opposite direction at the same moment; the normal direction of the other unilateral emission coil group is respectively in the same direction or opposite directions with the normal directions of the two adjacent coils in the vertical direction at the same moment; the normal lines of the two-side transmitting coil are in the same direction, and the normal lines of the two-side transmitting coil are in the opposite direction, because the normal lines of the two adjacent coils in the vertical direction of the single-side transmitting coil group are in the opposite directions at the same time, the magnetic lines of force of the two coils above and below in the line with the opposite normal lines of the two-side transmitting coil group form an annular magnetic field, and the annular magnetic field at the two sides is extruded relatively to offset on the z axis to generate the magnetic lines of force in the z axis direction.

Therefore, when the maximum section of the metal plate or the mobile phone can pass through more magnetic lines in any direction of x, y and z, a stronger eddy current signal is generated, so that the reliability of detecting the metal plate or the mobile phone by using the coil structure is improved, and the missing judgment is avoided.

Preferably, the another single-side transmitting coil set includes a matrix structure of at least two rows of coils and one column of coils, where one row of coils is a coil, and the normal directions of two adjacent coils are opposite at the same time.

Preferably, the other single-side transmitting coil set comprises a matrix structure of one row of coils and at least two columns of coils, one column of coils is one coil, and the normal directions of two adjacent coils are opposite at the same time.

As an improvement of the scheme, coils are respectively arranged at the upper part and/or the bottom part of the double-side or single-side transmitting coil set.

Preferably, the magnetic induction lines of a plurality of the adjacent transmitting coils have the same direction and are equivalent to one transmitting coil.

As a refinement of the above, the coil windings of the single-sided and/or double-sided transmit coil sets may or may not be electrically connected.

On the other hand, the utility model provides a through type detector, including the major structure, be equipped with the host computer in the major structure and be used for the coil structure of through type detector with it links to each other, characterized in that, the coil structure includes the relative transmitting coil group that sets up in bilateral, forms the intermediate channel between the two and is used for passing through the testee;

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses in the intermediate passage of detector, electric current in the coil is alternating current, unilateral transmitting coil group is the sectional type structure, unilateral transmitting coil group comprises the transmitting coil block of difference, bilateral transmitting coil group structure is different about, in the unilateral transmitting coil group, adjacent transmitting coil block coil is around to the normal direction at same moment opposite in the horizontal direction, adjacent transmitting coil block is around to the normal direction at same moment opposite in the vertical direction, in the three-dimensional space of intermediate passage, there is some regional left and right sides transmitting coil around to the normal direction at this region opposite, some regional left and right sides transmitting coil around to the normal direction at this region the same, x has been formed in the detection region, y, the electromagnetic field of z three direction, utilize the magnetic field that diverges that produces around the normal direction opposite region of transmission coil in the detection region and the equidirectional magnetic field that produces around the normal direction same region of transmission coil to put the metal panel through the safety inspection passageway with the gesture of difference in proper order. Meanwhile, the problem that the metal panel is difficult to detect when the metal panel is parallel to the transmitting coil and passes through the security inspection channel under the condition of a divergent magnetic field is solved by utilizing the condition of a same-direction magnetic field, and the problem that the metal panel is difficult to detect when the metal panel is perpendicular to the transmitting coil and passes through the security inspection door channel under the condition of the same-direction magnetic field is solved by utilizing the condition of the divergent magnetic field, so that the metal panel and the transmitting coil are complementary, the reliability of metal detection is greatly improved, the phenomenon of misjudgment of a pass detector is effectively avoided, and the smooth operation of security inspection is ensured.

Drawings

Fig. 1 is a schematic diagram of a first example of a coil structure of a pass-through detector according to the present invention;

fig. 2 is a first cross-sectional front view of a first example of a coil structure of a pass-through detector of the present invention;

FIG. 3 is a second cross-sectional front view of a first example of a coil configuration of a pass-through detector of the present invention;

fig. 4 is a third cross-sectional front view of a first example of a coil structure of a pass-through detector of the present invention;

fig. 5 is a top view of a first example of a coil structure of a pass-through detector of the present invention;

fig. 6 is a bottom view of a first example of a coil structure of a pass-through detector of the present invention;

FIG. 7 is a schematic diagram of the overall magnetic field of a first example of a coil configuration of a pass-through detector of the present invention;

fig. 8 is a schematic diagram of a second example of a coil structure of a pass-through detector according to the present invention;

fig. 9 is a schematic diagram of a third example of a coil structure of a pass-through detector according to the present invention;

fig. 10 is a schematic diagram of a fourth example of a coil structure of a pass-through detector according to the present invention;

fig. 11 is a schematic diagram of a fifth example of a coil structure of a pass-through detector according to the present invention;

fig. 12 is a schematic diagram of a sixth example of a coil structure of a pass-through detector according to the present invention;

fig. 13 is a schematic diagram of a seventh example of a coil structure of a pass-through detector according to the present invention;

fig. 14 is a schematic diagram of an eighth example of a coil structure of a pass-through detector according to the present invention;

fig. 15 is a schematic diagram of a ninth example of the coil structure of the pass-through detector according to the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The coil structure for the through type detector according to various embodiments of the present invention includes a transmitting coil 1, a transmitting coil 2, and a receiving coil (not shown). The transmitting coil 1 and the transmitting coil 2 are respectively connected with the receiving coil in an electromagnetic coupling mode. The transmitting coil 1 and the transmitting coil 2 are respectively located on two sides of a door panel of the pass-through detector 300 and are arranged oppositely, and a middle channel for passing through a measured object is formed between the transmitting coil 1 and the transmitting coil. Coil currents of the transmitting

coil sets

1 and 2 are alternating currents, and when excitation signals are sent through the transmitting coils, the receiving coils can generate induction signals. The current in the transmitting coil group is alternating current, and the voltage value induced by the receiving coil is used for detecting the object to be detected.

All embodiments of the coil structure of the pass-through detector and the pass-through detector formed therefrom comply with the following rules:

in terms of the coil shape and size rules, the sizes of the transmitting coil 1 and the transmitting coil 2 may be equal or unequal.

In terms of the number of turns, the number of turns of the transmitting coil 1 and the number of turns of the transmitting coil 2 may be equal or may not be equal.

In terms of the position rule, the center positions of the transmitting coil 1 and the transmitting coil 2 may or may not coincide with each other after being rotated by 180 degrees along the z-axis.

In terms of wiring rules, there may or may not be actual electrical connections between different transmit coils within the same transmit coil assembly.

Referring to fig. 1, fig. 1 is a schematic diagram of a first example of a coil structure of a through-type detector according to the present invention. The transmitting coil group 1 and the transmitting coil group 2 of the coil structure of the through type detector have different structures, the two transmitting coil groups are formed by the transmitting coil group 1 and the transmitting coil group 2, each transmitting coil group is formed by different transmitting coil blocks, the transmitting coil group 1 is formed by a transmitting coil block 111 and a transmitting coil block 112 to form a single-side transmitting coil group, the transmitting coil group 2 is formed by a transmitting coil block 211, a transmitting coil block 212, a transmitting coil block 221, a transmitting coil block 222, a transmitting coil block 231 and a transmitting coil block 232 to form another single-side transmitting coil group, and the single-side transmitting coil group is a same wire (current) same-direction winding coil, namely, all the coils are electrically connected.

As shown in fig. 1, a rectangular coordinate system is established, the transmitting coil set 1 and the transmitting coil set 2 are parallel to the v-axis and the z-axis, perpendicular to the x-axis, the transmitting coil block 111 is wound counterclockwise when viewed from the positive direction of the x-axis, the transmitting coil block 112 is wound clockwise, the transmitting coil block 211 is wound counterclockwise, the transmitting coil block 221 is wound clockwise, the transmitting coil block 231 is wound counterclockwise, the transmitting coil block 212 is wound clockwise, the transmitting coil block 222 is wound counterclockwise, the transmitting coil block 232 is wound clockwise, and it can be known from the right-hand rule that the normal direction of the winding direction of the transmitting coil is the direction of the magnetic induction lines, the magnetic induction lines generated by the transmitting coil block 112, the transmitting coil block 221, the transmitting coil block 212 and the transmitting coil block 232 are parallel along the positive direction of the x-axis, and the magnetic induction lines generated by the transmitting coil block 111, the transmitting coil block 211, the transmitting coil block 231 and the transmitting coil block 222 are parallel along the negative direction of the x-axis. In the unilateral transmitting group, in the horizontal direction, the directions of the magnetic induction lines generated by the transmitting coil block 211 and the transmitting coil block 221 are opposite at the same moment, the directions of the magnetic induction lines generated by the transmitting coil block 221 and the transmitting coil block 231 are opposite at the same moment, the directions of the magnetic induction lines generated by the transmitting coil block 212 and the transmitting coil block 222 are opposite at the same moment, and the directions of the magnetic induction lines generated by the transmitting coil block 222 and the transmitting coil block 232 are opposite at the same moment; in the vertical direction, the directions of the magnetic induction lines generated by the transmitting coil block 211 and the transmitting coil block 212 are opposite at the same time, the directions of the magnetic induction lines generated by the transmitting coil block 221 and the transmitting coil block 222 are opposite at the same time, the directions of the magnetic induction lines generated by the transmitting coil block 231 and the transmitting coil block 232 are opposite at the same time, and the directions of the magnetic induction lines generated by the transmitting coil block 111 and the transmitting coil block 112 are opposite at the same time. In the three-dimensional space of the middle channel, the directions of the magnetic induction lines generated by the coils in the areas covered by the transmitting coil block 221 and the transmitting coil block 111 are opposite, the directions of the magnetic induction lines generated by the coils in the areas covered by the transmitting coil block 222 and the transmitting coil block 112 are opposite, the directions of the magnetic induction lines generated by the coils in the areas covered by the transmitting coil block 211 and the transmitting coil block 111 are the same, the directions of the magnetic induction lines generated by the coils in the areas covered by the transmitting coil block 212 and the transmitting coil block 112 are the same, the directions of the magnetic induction lines generated by the coils in the areas covered by the transmitting coil block 231 and the transmitting coil block 111 are the same, and the directions of the magnetic induction lines generated by the coils in the areas covered by the transmitting coil block 232 and the transmitting coil block 112 are the same.

Referring to fig. 2, fig. 2 is a front view of a first cross section of a first example of a coil structure of a pass-through detector of the present invention, which is a front view of a cross section of a coverage area of the transmitting coil block 211, the transmitting coil block 212, the transmitting coil block 111, and the transmitting coil block 112. The directions of magnetic induction lines generated by the transmitting coil block 211 and the transmitting coil block 111 are parallel along the negative direction of the x axis, and under the combined action of the two transmitting coils, part of the magnetic induction lines pass through the transmitting coil block 111 and the transmitting coil block 211 along the negative direction of the x axis to form a magnetic field in the direction of the x axis; the directions of the magnetic induction lines generated by the transmitting coil block 212 and the transmitting coil block 112 are parallel along the positive direction of the x axis, and under the combined action of the two transmitting coils, part of the magnetic induction lines pass through the transmitting coil block 212 and the transmitting coil block 112 along the positive direction of the x axis to form a magnetic field in the direction of the x axis. According to the right-hand rule, currents are perpendicular to the paper surface and face inwards at the upper end line segment of the transmitting coil block 211, the lower end line segment of the transmitting coil block 212, the upper end line segment of the transmitting coil block 111 and the lower end line segment of the transmitting coil block 112, a ring-shaped magnetic field is formed around the line segments, and a magnetic induction line forms a magnetic field in the z-axis direction in a straight line region parallel to the z-axis along the clockwise direction and in a straight line region tangent to the z-axis; the current flows out of the paper surface perpendicularly to the lower line segment of the transmitting coil block 211, the upper line segment of the transmitting coil block 212, the lower line segment of the transmitting coil block 111 and the upper line segment of the transmitting coil block 112, a ring-shaped magnetic field is formed around the line segments, and the magnetic induction line forms a magnetic field in the z-axis direction in a linear region where the magnetic induction line is tangent to the z-axis in the counterclockwise direction. There are magnetic fields in the x-axis and z-axis directions in this region.

Referring to fig. 3, fig. 3 is a front view of a second cross section of a first example of a coil structure of a pass-through detector of the present invention, which is a front view of a cross section of a coverage area of the transmitting coil block 221, the transmitting coil block 222, the transmitting coil block 111, and the transmitting coil block 112. The magnetic induction lines generated by the transmitting coil block 221 are parallel along the positive direction of the x axis, the magnetic induction lines generated by the transmitting coil block 111 are parallel along the negative direction of the x axis, the magnetic induction lines generated by the transmitting coil block 222 are parallel along the negative direction of the x axis, the magnetic induction lines generated by the transmitting coil block 112 are parallel along the positive direction of the x axis, the magnetic induction lines generated by the transmitting coil block 221 and the transmitting coil block 111 are opposite in direction, the magnetic induction lines are deflected towards the parallel direction of the z axis under the action of the two transmitting coils, a magnetic field in the direction of the z axis is formed, and similarly, the magnetic induction lines generated by the transmitting coil block 222 and the transmitting coil block 112 are opposite in direction, and a magnetic field in the direction of the z axis is also formed under the action of the two transmitting coils. A magnetic field in the z-axis direction exists in this region.

Referring to fig. 4, fig. 4 is a third cross-sectional front view of a first example of the coil structure of the through-type probe according to the present invention, which is a front view of a cross section of a coverage area of the transmitting coil block 231, the transmitting coil block 232, the transmitting coil block 111, and the transmitting coil block 112. The directions of the magnetic induction lines generated by the transmitting coil block 231 and the transmitting coil block 111 are parallel along the negative direction of the x axis, and under the combined action of the two transmitting coils, part of the magnetic induction lines pass through the transmitting coil block 111 and the transmitting coil block 231 along the negative direction of the x axis to form a magnetic field in the direction of the x axis; the directions of the magnetic induction lines generated by the transmitting coil block 232 and the transmitting coil block 112 are parallel along the positive direction of the x axis, and under the combined action of the two transmitting coils, part of the magnetic induction lines pass through the transmitting coil block 232 and the transmitting coil block 112 along the positive direction of the x axis to form a magnetic field in the direction of the x axis. According to the right-hand rule, currents are perpendicular to the paper surface and face inwards at the upper end line segment of the transmitting coil block 231, the lower end line segment of the transmitting coil block 232, the upper end line segment of the transmitting coil block 111 and the lower end line segment of the transmitting coil block 112, a ring-shaped magnetic field is formed around the line segments, and a magnetic induction line forms a magnetic field in the z-axis direction in a straight line region where the magnetic induction line is tangent to the z-axis in the clockwise direction; the current flows out of the paper surface perpendicularly to the lower line segment of the transmitting coil block 231, the upper line segment of the transmitting coil block 232, the lower line segment of the transmitting coil block 111 and the upper line segment of the transmitting coil block 112, a ring-shaped magnetic field is formed around the line segments, and the magnetic induction line forms a magnetic field in the z-axis direction in a linear region where the magnetic induction line is tangent to the z-axis in the counterclockwise direction. There are magnetic fields in the x-axis and z-axis directions in this region.

Referring to fig. 5, fig. 5 is a top view of a first example of a coil structure of a through-type detector according to the present invention. The magnetic induction lines generated by the transmitting coil block 231, the transmitting coil block 211 and the transmitting coil block 111 are all parallel along the negative direction of the x axis, the magnetic induction lines generated by the transmitting coil block 221 are all parallel along the positive direction of the x axis, the magnetic induction lines are in the same direction in the area covered by the transmitting coil block 231 and the transmitting coil block 111, and part of the magnetic induction lines pass through the transmitting coil block 111 and the transmitting coil block 231 along the negative direction of the x axis to form a magnetic field in the direction of the x axis. In the area covered by the transmitting coil block 211 and the transmitting coil block 111, the directions of the magnetic induction lines are the same, and part of the magnetic induction lines pass through the transmitting coil block 111 and the transmitting coil block 221 along the negative direction of the x axis, so that a magnetic field in the direction of the x axis is formed. In the region covered by the transmitter coil block 221 and the transmitter coil block 111, the directions of the magnetic induction lines are opposite, and the magnetic induction lines are deflected in the direction parallel to the v-axis in the middle of the channel, and a magnetic field in the direction of the v-axis is generated in this region. There are magnetic fields in the x-axis and v-axis directions in this region.

Referring to fig. 6, fig. 6 is a bottom view of a first example of a coil structure of a through-type probe according to the present invention. The magnetic induction lines generated by the transmitting coil block 212, the transmitting coil block 232 and the transmitting coil block 112 are all parallel along the positive direction of the x axis, the magnetic induction lines generated by the transmitting coil block 222 are all parallel along the negative direction of the x axis, the magnetic induction lines are in the same direction in the area covered by the transmitting coil block 212 and the transmitting coil block 112, and part of the magnetic induction lines pass through the transmitting coil block 212 and the transmitting coil block 112 along the positive direction of the x axis to form a magnetic field in the direction of the x axis. In the area covered by the transmitting coil block 232 and the transmitting coil block 112, the directions of the magnetic induction lines are the same, and part of the magnetic induction lines pass through the transmitting coil block 232 and the transmitting coil block 112 along the positive direction of the x axis, so that a magnetic field in the direction of the x axis is formed. In the region covered by the transmitter coil block 222 and the transmitter coil block 112, the magnetic induction lines are opposite in direction, and the magnetic induction lines are deflected in the direction parallel to the v-axis in the middle of the channel, and a magnetic field in the direction of the v-axis is generated in this region. There are magnetic fields in the x-axis and v-axis directions in this region.

Referring to fig. 7, fig. 7 is a schematic diagram of the overall magnetic field of the first example of the coil structure of the through-type detector of the present invention, because there is a magnetic field in the three directions of x, y and z axis in the middle of the channel, it can generate an effective eddy magnetic field for the detected object to pass through the detector in any posture, thereby greatly increasing the detectable rate of the detected object and improving the reliability of the through-type detector.

In terms of winding rules, clockwise winding or clockwise winding can be adopted for each transmitting coil block along the positive direction of the x-axis, but the winding normal directions of adjacent transmitting coil blocks in the horizontal direction should be opposite at the same moment, and the winding normal directions of adjacent transmitting coil blocks in the vertical direction should be opposite at the same moment.

The layout of the transmit coil assembly 1 and the transmit coil assembly 2 may have various design forms.

Referring to fig. 8, fig. 8 is a schematic diagram of a second example of the coil structure of the through type detector of the present invention. The second embodiment differs from the first embodiment only in that the winding direction of the coil corresponding to each coil is reversed. Specifically, when viewed along the positive direction of the x-axis, the transmitting coil block 111 is wound counterclockwise, the transmitting coil block 112 is wound clockwise, the transmitting coil block 211 is wound clockwise, the transmitting coil block 221 is wound counterclockwise, the transmitting coil block 231 is wound clockwise, the transmitting coil block 212 is wound counterclockwise, the transmitting coil block 222 is wound clockwise, the transmitting coil block 232 is wound counterclockwise, magnetic induction lines generated by the transmitting coil block 111, the transmitting coil block 221, the transmitting coil block 212 and the transmitting coil block 232 are parallel to each other in the negative direction of the x-axis, and magnetic induction lines generated by the transmitting coil block 112, the transmitting coil block 211, the transmitting coil block 231 and the transmitting coil block 222 are parallel to each other in the negative direction of the x-axis. The direction of the magnetic induction lines in the region covered by the transmission coil block 221 and the transmission coil block 111 at the same time is the same as that in the region covered by the transmission coil block 222 and the transmission coil block 112 at the same time, so that a magnetic field in the x-axis direction is generated in this region; in the region covered by the transmission coil block 211 and the transmission coil block 111 at the same time, the region covered by the transmission coil block 212 and the transmission coil block 112 at the same time, and the region covered by the transmission coil block 231 and the transmission coil block 111 at the same time, the directions of the magnetic induction lines are opposite to those in the region covered by the transmission coil block 232 and the transmission coil block 112 at the same time, so that magnetic fields in the v-axis and z-axis directions are generated in this region, and magnetic fields in the x, y, and z directions exist in the detection region.

Referring to fig. 9, fig. 9 is a schematic diagram of a third example of the coil structure of the through-type detector of the present invention. The difference between the third embodiment and the second embodiment is only the mirror image of the position of the bilateral transmitting coil set. Specifically, the magnetic induction directions in the area covered by the transmission coil block 111 and the transmission coil block 211 at the same time, the area covered by the transmission coil block 111 and the transmission coil block 231 at the same time, the area covered by the transmission coil block 112 and the transmission coil block 212 at the same time, and the area covered by the transmission coil block 111 and the transmission coil block 221 at the same time are the same, and the magnetic induction directions in the area covered by the transmission coil block 112 and the transmission coil block 222 at the same time are opposite.

Referring to fig. 10, fig. 10 is a schematic diagram of a fourth example of the coil structure of the through-type detector of the present invention. The difference between the fourth embodiment and the second embodiment is only that one

coil set

241, 242 is added to the transmitting coil set 2. Specifically, the direction of the magnetic induction lines in the area covered by the transmission coil block 221 and the transmission coil block 111 at the same time, the area covered by the transmission coil block 241 and the transmission coil block 111 at the same time, the area covered by the transmission coil block 222 and the transmission coil block 112 at the same time, and the area covered by the transmission coil block 242 and the transmission coil block 112 at the same time are the same; the magnetic induction line direction in the area covered by the transmission coil block 211 and the transmission coil block 111 at the same time, the area covered by the transmission coil block 231 and the transmission coil block 111 at the same time, and the area covered by the transmission coil block 212 and the transmission coil block 112 at the same time is opposite to that in the area covered by the transmission coil block 232 and the transmission coil block 112 at the same time.

Referring to fig. 11, fig. 11 is a schematic diagram of a fifth example of the coil structure of the through type detector of the present invention. The difference between the fifth embodiment and the first embodiment is only that a row of

coils

213, 223, 233 is added to the transmitting coil set 2. Specifically, the direction of the magnetic induction lines in the area covered by the transmission coil block 211 and the transmission coil block 111 at the same time, the area covered by the transmission coil block 231 and the transmission coil block 111 at the same time, the area covered by the transmission coil block 212 and the transmission coil block 112 at the same time, the area covered by the transmission coil block 232 and the transmission coil block 112 at the same time, the area covered by the transmission coil block 213 and the transmission coil block 113 at the same time, and the area covered by the transmission coil block 233 and the transmission coil block 113 at the same time are the same; the directions of the magnetic induction lines are opposite in the region covered by the transmitting coil block 221 and the transmitting coil block 111 at the same time, the region covered by the transmitting coil block 222 and the transmitting coil block 112 at the same time, and the region covered by the transmitting coil block 223 and the transmitting coil block 113 at the same time.

The number of blocks in the horizontal direction in the transmission coil group 1 and the transmission coil group 2 may be increased or decreased as necessary.

The number of blocks in the vertical direction in the

transmission coil groups

1 and 2 can be increased or decreased as necessary.

Referring to fig. 12, fig. 12 is a schematic diagram of a sixth example of the coil structure of the through-type detector according to the present invention. The sixth embodiment differs from the first embodiment only in that each coil in the dual edge transmit coil assembly is a separate coil and there is no electrical connection.

The winding method and position of the transmitting coil assembly 1 and the transmitting coil assembly 2 are the same as the first example of the coil structure of the through type detector of the utility model, and are not described herein again. For the transmit coil assembly 1, there is no actual electrical connection of the transmit coil block 111 and the transmit coil block 112; for the transmit coil set 2, there is no actual electrical connection of the transmit coil block 211, the transmit coil block 212, the transmit coil block 221, the transmit coil block 222, the transmit coil block 231, and the transmit coil block 232.

Referring to fig. 13, fig. 13 is a schematic diagram of a seventh example of the coil structure of the through type detector of the present invention. The seventh embodiment differs from the sixth embodiment only in that a plurality of adjacent transmitting coil blocks can be equivalent to one transmitting coil block if the directions of magnetic induction lines in the coil are the same. Specifically, the winding method and the position of the transmitting coil block 111, the transmitting coil block 112, the transmitting coil block 212, the transmitting coil block 221, the transmitting coil block 222, the transmitting coil block 231, and the transmitting coil block 232 are the same as those of the sixth example of the coil structure of the through-type detector of the present invention, and are not described herein again. The magnetic induction directions of the transmitting coil block 211a and the transmitting coil block 211b are the same, the effect in the transmitting coil can be equal to that of one transmitting coil block 211, the magnetic induction directions of the transmitting coil block 211 are the same as those of the transmitting

coil blocks

211a and 211b, the magnetic induction directions of the transmitting coil block 211 and the transmitting coil block 221 are opposite at the same time in the horizontal direction, and the magnetic induction directions of the transmitting coil block 211 and the transmitting coil block 212 are opposite at the same time in the vertical direction.

Referring to fig. 14, fig. 14 is a schematic diagram of an eighth example of the coil structure of the through type detector of the present invention. The eighth embodiment is different from the first embodiment only in that the number of the

transmission coil groups

1 and 2 can be set as required. Specifically, the winding method and position of the transmitting coil assembly 1 and the transmitting coil assembly 2 are the same as the first example of the coil structure of the through type detector of the above utility model, and are not described herein again. There are two sets of transmit coils for this example, namely two sets of transmit coils 1 and two sets of transmit coils 2.

Referring to fig. 15, fig. 15 is a schematic diagram of a ninth example of the coil structure of the through-type detector according to the present invention. The ninth embodiment differs from the first embodiment only in that there may be other configurations of the transmission coil assembly in the probe than the transmission coil assembly 1 and the transmission coil assembly 2. Specifically, the winding method and position of the transmitting coil assembly 1 and the transmitting coil assembly 2 are the same as the first example of the coil structure of the through type detector of the above utility model, and are not described herein again. In addition to the transmitter coil assembly 1 and the transmitter coil assembly 2, there are a transmitter coil assembly 3, a transmitter coil assembly 4, a transmitter coil assembly 5, and a transmitter coil assembly 6 having different coil structures in other regions.

On the other hand, the embodiment tenth provides a through type detector, which includes a detector housing, and a transmitting coil set, a receiving coil and a host installed on the controller housing, wherein a security inspection channel is installed in the middle of the detector housing, a transmitting coil set 1 and a transmitting coil set 2 of the transmitting coil set are respectively installed on both sides of the security inspection channel, the transmitting coil set and the receiving coil are connected in an electromagnetic coupling manner, and both the transmitting coil set and the receiving coil are electrically connected to the host, wherein the current of the coil in the transmitting coil set is an alternating current, the single-sided transmitting coil set is a block structure, the transmitting coil set 1 is composed of a transmitting coil block 111 and a transmitting coil block 112, the transmitting coil set 2 is composed of a transmitting coil block 211, a transmitting coil block 221, a transmitting coil block 231, a transmitting coil block 212, a transmitting coil block 222 and a transmitting coil block 232, the structures of the transmitting coil set 1 and the transmitting coil set 2 are different, for the transmitting coil set 1, the normal directions of the transmitting coil block 111 and the transmitting coil block 112 in the vertical direction are opposite to the same moment, for the transmitting coil set 2, for transmitting coil set 211 and transmitting coil block 221, the same normal direction are opposite to the transmitting coil block 222, and for transmitting coil block 232, the same coil block, the normal direction for transmitting coil block 221 and the transmitting coil block are opposite to the same normal to the transmitting coil block, the same coil block, and the transmitting coil block 222, the transmitting coil block are opposite to the same coil block, the same coil winding moment; in the vertical direction, the normal directions of the coil winding directions of the transmitting coil block 211 and the transmitting coil block 212 are opposite at the same time, the normal directions of the coil winding directions of the transmitting coil block 221 and the transmitting coil block 222 are opposite at the same time, and the normal directions of the coil winding directions of the transmitting coil block 231 and the transmitting coil block 232 are opposite at the same time. In the three-dimensional space of the middle channel, the normal directions of the coil winding directions in the areas covered by the transmitting coil block 221 and the transmitting coil block 111 are opposite in the area, the normal directions of the coil winding directions in the areas covered by the transmitting coil block 222 and the transmitting coil block 112 are opposite in the area, the normal directions of the coil winding directions in the areas covered by the transmitting coil block 211 and the transmitting coil block 111 are the same in the area, the normal directions of the coil winding directions in the areas covered by the transmitting coil block 212 and the transmitting coil block 112 are the same in the area, the normal directions of the coil winding directions in the areas covered by the transmitting coil block 232 and the transmitting coil block 112 are the same in the area, and electromagnetic fields in three directions of x, y and z are formed in the detection area.

The pass-through detector includes a coil structure, and the detailed description thereof is omitted with reference to the first to ninth embodiments.

Use the utility model discloses a coil structure for detector founds through type detector, can effectively solve the higher problem of the rate of failing to report that exists in the through type detector, greatly promotes the reliability and the detection efficiency of through type detector.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. Coil structure of through type detector, its characterized in that includes: the device comprises transmitting coil groups with opposite sides, wherein a middle channel is formed between the transmitting coil groups and the transmitting coil groups for passing through a measured object;

one single-side transmitting coil group comprises a matrix structure of at least two rows of coils and at least two columns of coils; the normal directions of two adjacent coils in the horizontal direction are opposite at the same moment, and the normal directions of two adjacent coils in the vertical direction are opposite at the same moment.

2. A coil structure of a pass-through detector as set forth in claim 1, wherein in the three-dimensional space of the middle channel, the normal directions of the coils of the bilateral transmission coil sets in the partial region are opposite, and the normal directions of the coils of the bilateral transmission coil sets in the partial region are the same, so that electromagnetic fields in the three directions of x, y and z are formed.

3. A coil structure of a pass-through detector as set forth in claim 1, wherein the other one-side transmission coil set of the two-side-oppositely-arranged transmission coil sets comprises a matrix structure of at least two rows of coils and one column of coils, one row of coils is a coil, and the normal directions of two adjacent coils are opposite at the same time.

4. A coil structure of a pass-through detector as set forth in claim 1, wherein the other one-side transmission coil set of the two-side-oppositely-arranged transmission coil sets comprises a matrix structure of one row of coils and at least two columns of coils, one column of coils is a coil, and the normal directions of two adjacent coils are opposite at the same time.

5. A coil structure of a pass-through detector according to claim 1, wherein the upper and/or bottom of the double-or single-sided transmit coil set is provided with a coil, respectively.

6. A coil structure of a pass-through detector as set forth in claim 1, wherein the magnetic induction lines of a plurality of said adjacent transmitting coils are in the same direction and are equivalent to one transmitting coil.

7. A coil structure of a pass-through detector as claimed in any one of claims 1-6, wherein the coil windings of any one side transmitting coil set are connected or disconnected.

8. A through type detector comprises a main body structure, wherein a host and a coil structure connected with the host and used for the through type detector are arranged in the main body structure;

the single-side transmitting coil group comprises a matrix structure of at least two rows of coils and at least two columns of coils, wherein one row of coils comprises at least two coils, and one column of coils comprises at least two coils; the normal directions of two adjacent coils in the horizontal direction are opposite at the same moment, and the normal directions of two adjacent coils in the vertical direction are opposite at the same moment.

9. A pass-through detector as claimed in claim 8, wherein in the three-dimensional space of the middle channel, the normal directions of the coils of the bilateral transmission coil sets in the partial region are opposite, and the normal directions of the coils of the bilateral transmission coil sets in the partial region are the same, so that electromagnetic fields in the x, y and z directions are formed.

10. A transit type probe according to claim 8, wherein the other one-side transmission coil set of the two-side oppositely-arranged transmission coil sets comprises a matrix structure of at least two rows of coils and one column of coils, one row of coils is a coil, and the normal directions of two adjacent coils are opposite at the same time.

11. A transit type probe according to claim 8, wherein the other one-side transmission coil set of the two-side oppositely arranged transmission coil sets comprises a matrix structure of one row of coils and at least two columns of coils, one column of coils is a coil, and the normal directions of two adjacent coils are opposite at the same time.

12. A transit-type probe according to claim 8, wherein coils are arranged at the upper and/or lower part of the double-or single-sided transmit coil set, respectively.

13. A pass-through detector as claimed in claim 8, wherein the magnetic flux lines of a plurality of said adjacent transmit coils are in the same direction and are equivalent to one transmit coil.

14. A pass-through detector as claimed in any one of claims 8-13, wherein the coils of any one of said single side transmit coil sets are connected or disconnected.