High-sensitivity multi-direction probe security door
By using a multi-directional probe security gate design and combining a detection ring and a receiving coil, the system achieves accurate identification and positioning of tiny metals, solving the problem of insufficient sensitivity in existing security gates and improving security inspection efficiency.
Patent Information
- Application Number
- CN202520537687.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-03-26
AI Technical Summary
Existing security gates lack sufficient sensitivity, are unable to accurately identify tiny metal objects, and cannot locate them laterally or at an angle, making it difficult to search for metal objects.
The security gate adopts a multi-directional probe design. By setting a detection ring on the side column, the transmitting coil inside the detection ring generates an electromagnetic field, and the receiving coil on the middle plate captures the changes in the electromagnetic field and indicates the abnormal position through an alarm light, thus achieving precise positioning.
It improves the sensitivity and efficiency of security checks, enabling accurate identification and location of metal items, reducing missed detections, and enhancing the accuracy and efficiency of inspections.
Smart Images

Figure CN223808565U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to security check equipment technical field, concretely is a high sensitivity multi -direction probe security check door. BACKGROUND
[0002] The security check door is a device for detecting whether a person carries a metal article, which is widely used in airports, stations, hospitals and other public places, and the principle of the security check door is to detect metal objects through electromagnetic induction technology.
[0003] In the prior art, the mainstream metal detection security check door is mainly based on electromagnetic induction principle, generates an alternating magnetic field through a transmitting coil, induces eddy current effect when the metal article enters the magnetic field, and detects the magnetic field distortion through a receiving coil to realize alarm positioning, however, the sensitivity of the traditional security check door is insufficient, the magnetic field coverage is uneven due to the layout of single-row transmitting or single-row receiving coil, and small metal (such as small knife blade and small electronic component) is prone to missed detection, at the same time, the traditional security check door can only position the metal in the vertical direction, cannot accurately identify the lateral and oblique metal, and cannot locate the position of the metal in the identification process, resulting in difficult search of the metal article. SUMMARY
[0004] In view of the above technical problems, the utility model provides the following technical scheme:
[0005] A high sensitivity multi -direction probe security check door, including the base, be provided with a plurality of side columns on the base, the side column is symmetrically arranged on the base, be provided with the detection ring on the side column, the detection ring includes the middle plate and the slide rail frame, the slide rail frame is connected with the side column slidingly, the slide rail frame is fixedly connected with the middle plate, the middle plate is arc-shaped, the two sides of the slide rail frame are fixedly connected with two middle plates respectively, and the two ends of the middle plate are connected with the slide rail frames on the two side columns.
[0006] Further, the transmitting coil is arranged in the detection ring, and the transmitting coil is relatively arranged in the detection ring.
[0007] Further, a plurality of receiving coils are fixedly installed on the middle plate, and the receiving coils are used to capture electromagnetic field changes.
[0008] Further, an alarm lamp is fixedly installed on the middle plate, and the alarm lamp is electrically connected with the corresponding receiving coil.
[0009] Further, an arc-shaped shell is fixedly installed on the middle plate, and the arc-shaped shell is made of engineering plastic.
[0010] Further, the side shell is fixedly installed on the slide rail frame, and the side shell is made of engineering plastic.
[0011] Further, the cross beam is fixedly installed between the side columns, the cross beam is arranged at one end of the side column away from the base, the base is provided with a standing plate, the standing plate is used for allowing the detected person to stand, and the standing plate is also used for limiting the standing range of the detected person.
[0012] Further, the driving motor is fixedly installed on the side column, and the output shaft of the driving motor is fixedly installed with a lead screw, and the slide rail frame is connected with the driving motor through threads.
[0013] The device can accurately position the metal object to improve the security efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a whole structure schematic view of the device.
[0015] Figure 2 It is a lead screw structure schematic view of the device.
[0016] Figure 3 It is a slide rail frame structure schematic view of the device.
[0017] Figure 4 It is a side column and slide rail frame structure schematic view of the device.
[0018] Figure 5 It is a receiving coil structure schematic view of the device.
[0019] The drawings show that: 101 is a base; 102 is a standing plate; 103 is a side column; 104 is a cross beam; 105 is a driving motor; 106 is a lead screw; 201 is a middle plate; 202 is a receiving coil; 203 is an alarm lamp; 204 is an arc-shaped shell; 205 is a slide rail frame; 206 is a side shell; and 207 is a transmitting coil. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical scheme and advantages of the device more clear, the device is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the device, and are not used to limit the device.
[0021] As Figures 1 to 4 shown, a high-sensitivity multi-directional probe security gate, comprising a base 101, a plurality of side columns 103 are arranged on the base 101, the side columns 103 are symmetrically arranged on the base 101, the distance between two side columns 103 is 0.85 meters, a cross beam 104 is fixedly installed between the side columns 103, the cross beam 104 is arranged at one end of the side column 103 away from the base 101, the distance between the base 101 and the cross beam 104 is 2.2 meters, a standing plate 102 is arranged on the base 101, the standing plate 102 is used for the standing detection, and the standing plate 102 also limits the standing range of the detected person.
[0022] As Figures 2 to 5 shown, a driving motor 105 is fixedly installed on the side column 103, a lead screw 106 is fixedly installed on the output shaft of the driving motor 105, a slide rail frame 205 is slidingly installed on the side column 103, the slide rail frame 205 is connected with the driving motor 105 through threads, the slide rail frame 205 slides on the outer wall of the side column 103, a plurality of intermediate plates 201 are fixedly installed on the slide rail frame 205, the intermediate plates 201 are arc-shaped, the two sides of the slide rail frame 205 are fixedly connected with two intermediate plates 201 respectively, the two ends of the intermediate plate 201 are connected with the slide rail frame 205 on the two side columns 103, so that the two intermediate plates 201 are connected with the two slide rail frames 205 to form a detection ring, and the detected person is in the detection ring during detection, and the detection ring moves on the two side columns 103.
[0023] As Figures 3 to 5 shown, a plurality of receiving coils 202 are fixedly installed on the intermediate plate 201, the receiving coils 202 can capture electromagnetic field changes during use, an alarm lamp 203 is also fixedly installed on the intermediate plate 201, the alarm lamp 203 is arranged behind each receiving coil 202, the alarm lamp 203 is electrically connected with the corresponding receiving coil 202, so that when the receiving coil 202 captures the electromagnetic field change, the alarm lamp 203 will be triggered to alarm, so that when the corresponding alarm lamp 203 alarms, the position of the metal carried by the detected person can be further narrowed down.
[0024] As Figures 3 to 5As shown, the slide rail frame 205 is provided with a transmitting coil 207 for generating an electromagnetic field, the transmitting coil 207 is arranged in the detection ring, and the transmitting coil 207 is oppositely arranged in the detection ring, so that the transmitting coil 207 can uniformly generate an electromagnetic field, the middle plate 201 is fixedly provided with an arc-shaped shell 204 made of engineering plastic, and the slide rail frame 205 is fixedly provided with a side shell 206 made of engineering plastic.
[0025] In the working process of the device, as shown in Figure 4 Figure 5 The transmitting coil 207 on both sides of the detection ring is responsible for generating an electromagnetic field, and the receiving coil 202 on the detection ring is responsible for capturing the change of the electromagnetic field, and the person to be detected stands on the standing plate 102 during detection, and it should be noted that the person to be detected cannot touch the inner wall of the detection ring, and during detection, the detection ring is driven to rotate the lead screw 106 through the driving motor 105, so that the lead screw 106 drives the slide rail frame 205 to move towards the horizontal beam 104, so that the detection ring can gradually detect the metal objects on the person to be detected. There are two detection schemes during detection, one is to control the detection ring to move to the key detection position of the user for accurate detection, and the detection ring does not move during accurate detection, and the other is that the detection ring automatically and slowly moves on the side column 103, so that the whole body of the person to be detected can be detected. In this case, the detection ring is moved from the base 101 to the side of the horizontal beam 104 during the first detection, and the detection ring is moved from the side of the horizontal beam 104 to the base 101 during the second detection, and the detection ring can be reciprocated twice on the person to be detected for fine detection, and the device can be rechecked.
[0026] During detection, if any receiving coil 202 on the middle plate 201 captures the change of the electromagnetic field, the alarm lamp 203 connected to the receiving coil 202 will alarm to prompt the user of the abnormality, and the user can also set the position of the alarm lamp 203 to detect the corresponding part of the person to be detected, so that the position of the metal object on the person to be detected can be accurately positioned.
[0027] The above is only a preferred embodiment of the present application, and is not intended to limit the protection scope of the present application.
Claims
1. A high sensitivity multi-directional probe security door comprising a base (101) characterised in that: The base (101) is provided with a plurality of side columns (103), the side columns (103) are symmetrically arranged on the base (101), the side columns (103) are provided with detection rings, the detection ring comprises an intermediate plate (201) and a slide rail frame (205), the slide rail frame (205) is in sliding connection with the side column (103), the slide rail frame (205) is fixedly connected with the intermediate plate (201), the intermediate plate (201) is arc-shaped, the two sides of the slide rail frame (205) are fixedly connected with two intermediate plates (201) respectively, and the two ends of the intermediate plate (201) are connected with the slide rail frames (205) on the two side columns (103).
2. The high-sensitivity multi-directional probe security door according to claim 1, characterized in that: The slide rail frame (205) is provided with a transmitting coil (207), the transmitting coil (207) is used to generate an electromagnetic field, the transmitting coil (207) is arranged in the detection ring, and the transmitting coils (207) are oppositely arranged in the detection ring.
3. The high-sensitivity multi-directional probe security door of claim 1, wherein: A plurality of receiving coils (202) are fixedly installed on the intermediate plate (201), and the receiving coils (202) are used to capture electromagnetic field changes.
4. The high-sensitivity multi-directional probe security door of claim 1, wherein: An alarm lamp (203) is fixedly installed on the intermediate plate (201), and the alarm lamp (203) is in electrically controlled connection with the corresponding receiving coil (202).
5. The high sensitivity multi-directional probe security door according to claim 1, wherein: An arc-shaped shell (204) is fixedly installed on the intermediate plate (201), and the arc-shaped shell (204) is made of engineering plastic.
6. The high sensitivity multi-directional probe security door of claim 1, wherein: A side edge shell (206) is fixedly installed on the slide rail frame (205), and the side edge shell (206) is made of engineering plastic.
7. The high sensitivity multi-directional probe security door of claim 1, wherein: A cross beam (104) is fixedly installed between the side columns (103), the cross beam (104) is arranged at one end of the side column (103) away from the base (101), the base (101) is provided with a standing plate (102), the standing plate (102) is used for allowing a detected person to stand, and the standing plate (102) also limits the standing range of the detected person.
8. The high sensitivity multi-directional probe security door of claim 1, wherein: A driving motor (105) is fixedly installed on the side column (103), a lead screw (106) is fixedly installed on an output shaft of the driving motor (105), and the slide rail frame (205) is in threaded connection with the driving motor (105).