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Wall metal detector and target positioning method thereof

A technology for metal detectors and metal targets, which is applied in the field of metal detection, can solve the problems of not many combinations of compensation coils and the inability to judge the direction of the position of the metal target, and achieve the effect of improving the detection sensitivity and the ability to detect weak signals

Pending Publication Date: 2021-11-12
SHENZHEN MAMMOTH ELECTRONIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The inventors found that the above technical solution has the following disadvantages: 1. The direction of the location of the metal target cannot be judged; 2. There are not many ways to combine the compensation coils

Method used

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  • Wall metal detector and target positioning method thereof
  • Wall metal detector and target positioning method thereof
  • Wall metal detector and target positioning method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Example 1, such as figure 1 , figure 2 , image 3 and Figure 4 As shown, a wall metal detector includes a housing, a power supply, a controller, a transmitting coil L1, a receiving coil and a compensation coil; the receiving coil includes a first receiving coil L2, a second receiving coil L3 and a third receiving coil Coil L4; the compensation coil surrounds the outside of the transmitting coil L1, and the compensation coil is connected in series in the loop formed by the receiving coil;

[0065] Wherein, the first receiving coil L2 and the third receiving coil L4 are symmetrically arranged on the left and right sides of the transmitting coil L1; and the winding direction of the L2 is opposite to that of the L4; the L2 can be The L4 connection forms a receiving circuit for detecting the left and right directions of the wall metal;

[0066] The second receiving coil L3 is arranged on the periphery of the first receiving coil L2 and the third receiving coil L4, and ...

Embodiment 2

[0079] Example 2, such as Figure 5 and Figure 6 As shown, a wall metal detector includes a housing, a power supply, a controller, a transmitting coil L1, a receiving coil, and a compensation coil; it is characterized in that the receiving coil includes a first receiving coil L2 and a second receiving coil L3 and a third receiving coil L4;

[0080] Wherein, the first receiving coil L2 and the third receiving coil L4 are symmetrically arranged on the left and right sides of the transmitting coil L1; and the winding direction of the first receiving coil L2 and the winding direction of the third receiving coil L4 In the opposite direction; the first receiving coil L2 can be connected with the third receiving coil L4 to form a receiving loop for detecting the left and right directions of the wall metal;

[0081] The second receiving coil L3 is arranged on the periphery of the first receiving coil L2 and the third receiving coil L4, and the winding direction of the second receiv...

Embodiment 3

[0088] Example 3, such as Figure 7 and Figure 8 As shown, a wall metal detector, the wall metal detector also includes a fourth receiving coil L21 and a fifth receiving coil L41; the fourth receiving coil L21 and the fifth receiving coil L41 are symmetrically arranged on The upper and lower sides of the transmitting coil L1; the winding direction of the fourth receiving coil L21 is opposite to that of the fifth receiving coil L41; the fourth receiving coil L21 can be connected with the fifth receiving coil L41 to form a A receiving circuit is used to detect the up and down position of the wall metal.

[0089] When there is no metal target in the wall, the induction signal generated by the fourth receiving coil L21 is balanced with the induction signal generated by the fifth receiving coil L41; when the metal target is on the side of the fifth receiving coil L41, the The induction signal of the fifth receiving coil L41 is greater than the induction signal of the fourth rece...

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Abstract

The invention discloses a wall metal detector and a target positioning method thereof. The wall metal detector comprises a shell, a power supply, a controller, a transmitting coil (L1), a receiving coil and a compensating coil, wherein the receiving coil comprises a first receiving coil (L2), a second receiving coil (L3) and a third receiving coil (L4), the compensating coil is connected in series in a loop formed by the receiving coil, the first receiving coil (L2) and the third receiving coil (L4) are symmetrically arranged on the left side and the right side of the transmitting coil (L1), the winding direction of the first receiving coil (L2) is opposite to that of the third receiving coil (L4), the first receiving coil (L2) can be connected with the third receiving coil (L4) to form a receiving loop used for detecting the left and right orientation of a wall metal, the compensating coil comprises a first compensating coil (L5), a second compensating coil (L6), a third compensating coil (L7) and a fourth compensating coil (L8), and switches K1, K2, K3, K4, K5, K6, K7 and K8 are respectively used for switching an inner coil and an outer coil.

Description

technical field [0001] The invention relates to the technical field of metal detection, in particular to a wall metal detector and a method for locating a target. Background technique [0002] At present, metal detectors can detect hidden metal objects, and have been widely used in military, security inspection, mining, industry, daily life, etc. Metal detectors use the principle of electromagnetic induction, and are equipped with controllers, transmitting coils, and receiving coils inside. The controller controls the transmitting coil to generate a periodically changing alternating magnetic field, and the alternating magnetic field generates a vortex electric field around the metal detector. If the metal detector is close to the metal, an eddy current is formed on the receiving coil of the vortex electric field, thereby being detected inside the metal detector. The controller is sensed, so as to control the signal of alarm reminder. [0003] The manufacturing process of th...

Claims

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Application Information

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IPC IPC(8): G01V3/11
CPCG01V3/104
Inventor 王振兴
Owner SHENZHEN MAMMOTH ELECTRONIC CO LTD