CN117111167A - Intelligent grading early warning ferromagnetic detection system - Google Patents

Intelligent grading early warning ferromagnetic detection system Download PDF

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Publication number
CN117111167A
CN117111167A CN202310948775.0A CN202310948775A CN117111167A CN 117111167 A CN117111167 A CN 117111167A CN 202310948775 A CN202310948775 A CN 202310948775A CN 117111167 A CN117111167 A CN 117111167A
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ferromagnetic
detection
magnetic field
early warning
detection column
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朱兰
董京涛
宋如明
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Nanjing Cloud Magnet Electronic Technology Ltd
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Nanjing Cloud Magnet Electronic Technology Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/283—Intercom or optical viewing arrangements, structurally associated with NMR apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

The application discloses an intelligent grading early warning ferromagnetic detection system, which relates to the technical field of ferromagnetic detection and comprises the following components: the first detection post, the second detection post and the processing module of symmetry setting, first detection post and second detection post include respectively: the control unit, the fluxgate sensor group, the hierarchical LED banks, the laser radar sensor and the wireless communication unit are respectively and electrically connected with the control unit. According to the application, the first detection column and the second detection column are networked through the wireless communication unit, the combination detection is carried out by combining the matrix formed by the fluxgate sensor group, and the alarm triggering is carried out by combining the triggering signal line arranged by the laser radar, so that the ferromagnetic object is detected, the accurate positioning of multiple areas of the ferromagnetic object is realized, and meanwhile, the risk assessment and the grading early warning are carried out.

Description

Intelligent grading early warning ferromagnetic detection system
Technical Field
The application relates to the technical field of ferromagnetic detection, in particular to an intelligent grading early warning ferromagnetic detection system.
Background
Magnetic Resonance Imaging (MRI) is one of the most advanced image diagnosis apparatuses today, hydrogen nuclei in human tissue are magnetized under the action of an external strong magnetic field, and when electromagnetic waves with specific frequency are emitted to an inspected part, the hydrogen nuclei in the tissue absorb energy to resonate, so as to form magnetic resonance signals, and a tomographic image is formed after the magnetic resonance signals are collected and processed by a computer. Therefore, the magnetic resonance is named as nuclear magnetic resonance for short.
The magnetic resonance examination has the advantages of safety, no radiation, accuracy and the like, but at present, most of magnetic resonance rooms of hospitals, patients, families and even medical staff of hospitals often take coins, umbrellas, mobile phones, even magnetic oxygen cylinders, sickbeds, wheelchairs and the like into the magnetic resonance rooms, and the articles can be directly sucked into the magnetic holes to cause serious safety accidents. Meanwhile, with the progress of medicine, once implanted devices such as a magnetic cardiac pacemaker, a bracket and the like on a patient are accidentally brought into a magnetic hole by the patient, potential safety hazards are brought.
Meanwhile, the ferromagnetic detection system in the prior art can only detect the ferromagnetic object on the human body, but cannot detect the accurate position of the object on the body of the carrier, and meanwhile, the existing ferromagnetic detection system only needs to detect the ferromagnetic object to trigger an alarm, so that the size and risk level of the ferromagnetic object are not distinguished, most people entering the magnetic resonance chamber can carry small ferromagnetic objects to trigger an alarm in actual work, and the alarm can cause alarm fatigue of users if the risk is not distinguished. If all such low risk items are handled strictly, the efficiency of the magnetic resonance examination procedure is reduced, and ignoring such alarms may lead to negligence and failure to prevent the truly particularly high risk large ferromagnetic substances from entering the magnetic resonance room in time, presenting certain safety hazards and aggravating the workload of medical staff.
For the problems in the related art, no effective solution has been proposed at present.
Disclosure of Invention
Aiming at the problems in the related art, the application provides an intelligent grading early warning ferromagnetic detection system to overcome the technical problems in the prior art.
The technical scheme of the application is realized as follows:
an intelligent hierarchical early warning ferromagnetic detection system, comprising: the device comprises a first detection column, a second detection column and a processing module which are symmetrically arranged, wherein the first detection column, the second detection column and the processing module are arranged;
the first detection column and the second detection column respectively include: the LED lamp comprises a control unit, a fluxgate sensor group, a grading LED lamp group, a laser radar sensor and a wireless communication unit, wherein the fluxgate sensor group, the grading LED lamp group and the laser radar sensor are respectively and electrically connected with the control unit;
the control unit is electrically connected with the processing module through the wireless communication unit;
and the first detection column and the second detection column, further comprising: the double-mode change-over switch and the buzzer are respectively and electrically connected with the control unit.
Further, the fluxgate sensor group includes: an upper flux gate sense node, a middle flux gate sense node, and a lower flux gate sense node;
further, the hierarchical LED lamp group includes: the LED lamp comprises a main LED lamp node, an upper LED lamp node, a middle LED lamp node and a lower LED lamp node.
Further, the wireless communication unit includes: bluetooth or WIFI.
Further, the control unit is a DSP controller.
Further, the processing module is further electrically connected with the CCTV monitoring camera, the display and the loudspeaker.
Further, the first detection column and the second detection column perform ferromagnetic detection, including the following steps:
networking the first detection column and the second detection column through the wireless communication unit in advance to form a detection matrix, wherein magnetic field signals of a fluxgate sensor group of the first detection column and the second detection column are respectively expressed as: (A1.) An) and (B1 … … Bn), wherein n.gtoreq.3,
the (A1 … … An) and (B1 … … Bn) magnetic field signals of the fluxgate sensor group are converted into magnetic field strength data xa1..the first place and the second place are each converted into magnetic field strength data xb1..the first place and the second place are each converted into magnetic field strength data Xbn, forming a matrix, expressed as:
the magnetic field signal position of the fluxgate sensor group corresponding to the maximum value of the magnetic field intensity is expressed as the current ferromagnetic position.
Further, the step of performing risk classification early warning on the current ferromagnetic object position includes the following steps:
the preset magnetic field intensity safety threshold variables are represented as S1, S2 and S3, the intensity difference threshold variable is represented as M, the M value is preset to be an initial value, and a user can reassign a high risk reference object such as a wheelchair, test and adjust the M value so as to achieve the required identification effect.
When the detected object triggers a laser alarm line arranged on the system, the current ferromagnetic object moves near a certain fluxgate sensor:
if the magnetic field strength is: if the value of Xan-Xbn is < M and Xan > S1, xbn > S1, then the risk is determined to be high, and a ferromagnetic object which is large and has a large magnetic field strength (exceeds a red light threshold value) moves near the middle of the two detection columns;
if the magnetic field strength is: when Xan-Xbn is equal to < M, but Xan > S2 or Xbn > S2, the risk is determined to be medium, and a ferromagnetic object which is large and has a magnetic field strength not exceeding the threshold value of the red light moves near the middle of the two detection columns;
if the magnetic field strength is: when the value of Xan-Xbn is larger than M, the following conditions are continuously judged:
if the magnetic field strength is: s1< Xan < S2 or S1< Xbn < S2, then a moderate risk is determined;
if the magnetic field strength is: s2< Xan < S3 or S2< Xbn < S3, then low risk is determined;
if the magnetic field strength is: an < S3 or Xbn < S3, then no risk is determined.
Xan > Xbn, then it is determined that the ferromagnetic object is moving near the first detection column;
xan < Xbn, then it is determined that the ferromagnetic object is moving near the second detection column;
the application has the beneficial effects that:
according to the intelligent graded early warning ferromagnetic detection system, graded early warning ferromagnetic detection is carried out through integrating the first detection column and the second detection column which are independent and operate in a networking mode, the functions of ferromagnetic object detection and measurement are achieved through arranging the corresponding fluxgate sensor groups and the graded LED lamp groups in different areas, the ferromagnetic positions are detected in real time through the upper fluxgate sensing nodes, the middle fluxgate sensing nodes and the lower fluxgate sensing nodes which are arranged in different areas, the corresponding main LED lamp nodes, the upper LED lamp nodes, the middle LED lamp nodes and the lower LED lamp nodes are displayed, meanwhile, the first detection column and the second detection column are networked through the wireless communication units, the matrix is formed by matching with the fluxgate sensor groups to carry out combined detection, multi-zone accurate positioning is achieved, and meanwhile, the ferromagnetic objects are detected, positioned, and meanwhile risk assessment and graded early warning are carried out.
In addition, the laser radar sensor is arranged, so that the detection area can extend to the area away from the gate of the magnetic resonance chamber, and the ferromagnetic substance is prevented from penetrating into the magnetic resonance chamber during alarming, so that more early warning time is provided for medical staff.
In addition, after the alarm is triggered, the processing module sends a high-level signal to the CCTV monitoring camera, the CCTV monitoring camera is triggered to start shooting or video recording work, the display is used for image presentation, and the loudspeaker is used for playing early warning audio, so that medical staff can quickly and accurately judge the image.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an intelligent hierarchical early warning ferromagnetic detection system according to an embodiment of the present application.
In the figure:
1. a first detection column; 2. a second detection column; 3. a processing module; 4. a control unit; 5. a set of fluxgate sensors; 6. grading an LED lamp group; 7. a lidar sensor; 8. a wireless communication unit; 9. a dual mode switch; 10. a buzzer; 11. a horn; 12. CCTV video monitoring; 13. a display;
51. an upper fluxgate sense node; 52. a medium flux gate sense node; 53. a lower fluxgate sensing node;
60. a primary LED lamp node; 61. the LED lamp nodes are arranged; 62. a middle LED lamp node; 63. and (5) a lower LED lamp node.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.
According to the embodiment of the application, an intelligent graded early warning ferromagnetic detection system is provided.
As shown in fig. 1, an intelligent hierarchical early warning ferromagnetic detection system according to an embodiment of the present application includes:
the first detection column 1, the second detection column 2 and the processing module 3 are symmetrically arranged;
the first probe column 1 and the second probe column 2 respectively include: the control unit 4, the fluxgate sensor group 5, the grading LED lamp group 6, the laser radar sensor 7 and the wireless communication unit 8;
the fluxgate sensor group 5, the grading LED lamp group 6 and the laser radar sensor 7 are respectively and electrically connected with the control unit 4;
the control unit 4 is electrically connected with the processing module 3 through the wireless communication unit 8;
in addition, the first probe column 1 and the second probe column 2 further include: a dual-mode change-over switch 9 and a buzzer 10;
wherein, the dual-mode change-over switch 9 and the buzzer 10 are respectively and electrically connected with the control unit 4;
wherein the wireless communication unit 8 includes: bluetooth or WIFI.
Wherein the control unit 4 is a DSP controller.
A fluxgate sensor group 5 comprising: upper flux gate sense node 51, middle flux gate sense node 52, and lower flux gate sense node 53;
hierarchical LED banks 6 includes: a main LED lamp node 61, an upper LED lamp node 61, a middle LED lamp node 62, and a lower LED lamp node 63;
according to the technical scheme, the laser radar sensor 7 is arranged to trigger the signal wire, so that the detection area can extend to the area away from the gate of the magnetic resonance chamber, and therefore ferromagnetic substances are prevented from penetrating into the magnetic resonance chamber when an alarm is given, and more early warning time is given to medical staff.
In the technical scheme, when the LED lamp is applied, an upper fluxgate sensing node 51, a middle fluxgate sensing node 52 and a lower fluxgate sensing node 53 are respectively matched with an upper LED lamp node 61, a middle LED lamp node 62 and a lower LED lamp node 63 according to the height of a corresponding human body to be divided into three areas;
according to the technical scheme, the ferromagnetic geophysical prospecting positioning function is realized by arranging the fluxgate sensor groups 5 and the grading LED lamp groups 6 which are in different areas, the ferromagnetic positions are detected in real time by the upper fluxgate sensing nodes 51, the middle fluxgate sensing nodes 52 and the lower fluxgate sensing nodes 53 which are arranged in the different areas, and the ferromagnetic positions are displayed by the corresponding main LED lamp nodes 60, the upper LED lamp nodes 61, the middle LED lamp nodes 62 and the lower LED lamp nodes 63.
In addition, the processing module 3 is electrically connected to the CCTV monitoring camera 12, the display 13 and the speaker 11.
According to the technical scheme, after the alarm is triggered, the processing module 3 sends a high-level signal to the CCTV monitoring camera 12, the CCTV monitoring camera 12 is triggered to start shooting or video recording work, image presentation is carried out through the display 13, and early warning audio is played through the loudspeaker 11.
According to the technical scheme, when the ferromagnetic detection system alarms in application, the connected CCTV monitoring camera 12 can start to record the alarm event, and meanwhile, the position of ferromagnetic substances on the body of a tested person can be intuitively displayed through the human body schematic diagram by the aid of the display 13, so that medical staff can judge rapidly and accurately.
In use, the graded LED light set 6 may be provided with red, blue, yellow, green and orange light bands corresponding to the position and detection level of the ferromagnetic object.
In addition, the control unit 4 is connected with the dual-mode switch 9, so that the dual-mode switch function can be realized, and the networking mode or the single-mode can be switched at any time.
When in application, the networking mode and the single machine mode can be selected, and the method is concretely as follows:
in addition, when the stand-alone mode is in operation, the first detection column 1 or the second detection column 2 is independently operated, respectively.
Specifically, the single machine mode can independently operate the first detection column 1 and the second detection column 2 to perform detection classification early warning, and the specific steps are as follows:
when the magnetic resonance chamber door is checked to be in a closed state, the system is in standby, and the graded LED lamp set 6 is displayed to be orange;
the magnetic resonance chamber door is opened and the system is in a real-time detection state. When medical staff or patients enter the detection range, the normal walking (movement) state is maintained, and the method is as follows:
if the current grading LED lamp set 6 is green, it indicates that the detected object does not carry ferromagnetic substance, and the detected object can safely enter the magnetic resonance chamber.
If the current grading LED lamp set 6 is blue, it indicates that the detected object carries a ferromagnetic object with low risk, and the buzzer 10 alarms.
If the current grading LED lamp set 6 is orange, it indicates that the ferromagnetic object carried by the detected object is a moderate risk, the buzzer 10 alarms and the loudspeaker 11 outputs a voice prompt.
If the current grading LED lamp set 6 is red, it indicates that the detected object carries a ferromagnetic object with high risk, and the detected object is prohibited from entering the scanning room, and a rapid sound alarm and a voice alarm are output through the horn 11. Medical personnel must be immediately prevented from entering the magnetic resonance chamber to avoid harm and loss.
By means of the scheme, medical staff can intuitively send out and judge the size and the position of the ferromagnetic objects according to the color and the position of the grading LED lamp group 6.
In addition, when the networking mode is in operation, the first detection column 1 and the second detection column 2 work in a linkage way. When in alarming, only the main LED lamp node 60 and the LED lamp closest to the position of the ferromagnetic object in the grading LED lamp group 6 are on, and the alarm LED lamp light at the rest positions is off.
In addition, when in use, the first detection column 1 and the second detection column 2 are respectively networked through a wireless communication unit (8) to form a detection matrix.
Wherein, the magnetic field signals of the fluxgate sensor group 5 of the first detecting column 1 and the second detecting column 2 are respectively expressed as: (A1.) An) and (B1.) Bn, wherein n is greater than or equal to 3,
in addition, the movement of the ferromagnetic object generates a magnetic field, and the magnetic field signal received by each fluxgate is changed in real time under the influence of the position, the movement direction, the volume, the movement speed and the magnetism of the material of the ferromagnetic object. By means of the a/D converter, the (a.1....an.) and (b.1.....bn.) of the fluxgate sensor group 5 are respectively set. The signals are converted into magnetic field strength data xa1..xan and xb1.. Xbn, and corresponds to a composition matrix, expressed as:
the node position of the fluxgate sensor group 5 corresponding to the maximum magnetic field intensity is regarded as the current ferromagnetic position.
Performing risk grading early warning, which comprises the following steps:
the preset magnetic field intensity safety threshold variables are represented as S1 (red light threshold), S2 (orange light threshold) and S3 (blue light threshold), the intensity difference threshold variable is represented as M, the M value is preset to be an initial value, and a user can reassign a high-risk reference object such as a wheelchair, test and adjust the M value to achieve the required identification effect.
Wherein when the detected object triggers to a laser warning line set by the system, the current ferromagnetic object moves near a certain fluxgate sensor (An or Bn):
if the magnetic field strength is: if the value of Xan-Xbn is < M and Xan > S1, xbn > S1, then the risk is determined to be high, and a ferromagnetic object which is large and has a large magnetic field strength (exceeds a red light threshold value) moves near the middle of the two detection columns;
if the magnetic field strength is: when Xan-Xbn is equal to < M, but Xan > S2 or Xbn > S2, the risk is determined to be medium, and a ferromagnetic object which is large and has a magnetic field strength not exceeding the threshold value of the red light moves near the middle of the two detection columns;
if the magnetic field strength is: when the value of Xan-Xbn is larger than M, the following conditions are continuously judged:
if the magnetic field strength is: s1< Xan < S2 or S1< Xbn < S2, then a moderate risk is determined;
if the magnetic field strength is: s2< Xan < S3 or S2< Xbn < S3, then low risk is determined;
if the magnetic field strength is: an < S3 or Xbn < S3, then no risk is determined.
Xan > Xbn, it is determined that the ferromagnetic substance is moving near the first detection column 1;
an < Xbn, then it is determined that the ferromagnetic substance is moving close to the second detection column 2;
by means of the scheme, when the risk classification early warning visualization is applied, the risk classification early warning visualization method specifically comprises the following steps:
when the risk is high, the buzzer 10 sounds long, and the horn 11 sounds a high-risk voice alarm, for example: dangerous, immediately exiting, etc., the corresponding graded LED light group 6 at the location of the ferromagnetic object is shown as a red light;
at moderate risk, the buzzer 10 sounds at a medium frequency and the horn 11 sounds a conventional danger voice alarm, such as: dangerous, please stop, etc., the position of the ferromagnetic object is displayed as an orange lamp corresponding to the graded LED lamp group 6;
when the risk is low, the buzzer 10 sounds at a low frequency, the loudspeaker 11 does not sound, and the position of the ferromagnetic object is displayed as a blue lamp corresponding to the graded LED lamp set 6.
When there is no risk, the graded LED lamp sets 6 of all the alarm areas are displayed as green lights, and the buzzer 10 and the loudspeaker 11 do not output sound.
When the standby state is carried out, the graded LED lamp groups 6 of all the alarm areas are displayed as yellow lamps, and the buzzer 10 and the loudspeaker 11 do not output sound.
It should be noted that, in the technical scheme, the magnetic resonance imaging device can be used for detecting ferromagnetic objects, and mainly can be used for being placed at an entrance channel outside an MRI or an entrance of the MRI room, by providing ferromagnetic object detection positioning, medical staff is helped to find hidden ferromagnetic objects for detected persons, and in time, the medical staff is reminded whether potentially dangerous ferromagnetic objects or ferromagnetic object carriers are approaching a nuclear magnetic resonance room by Mandarin, and the magnetic resonance imaging device is prevented from being damaged or imaging quality is influenced.
Meanwhile, when the magnetic resonance alarm device is applied, non-ferromagnetic metals such as pure gold, silver, copper and the like which have no influence on the magnetic resonance are automatically skipped by specialized equipment such as non-magnetic surgical instruments, non-magnetic carts, non-magnetic wheelchairs and the like, so that false alarm is avoided, safety accidents are effectively avoided, and normal working flows of medical staff are not interfered.
In summary, by means of the above technical solution of the present application, the following advantages are provided:
the method is characterized in that the method comprises the steps of detecting the ferromagnetic object and the ferromagnetic nonmetallic object, performing daily automatic operation, wherein the operation does not need human intervention or periodic maintenance, and simultaneously, performing audible and visual alarm and hierarchical visual alarm, and reminding and audible alarm through alarm lamps with different colors when detecting the ferromagnetic object.
The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and other embodiments of the present disclosure will be readily apparent to those skilled in the art after considering the disclosure herein in the specification and examples. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (8)

1. An intelligent hierarchical early warning ferromagnetic detection system, comprising: the device comprises a first detection column (1), a second detection column (2) and a processing module (3) which are symmetrically arranged, wherein the first detection column and the second detection column are arranged in a symmetrical manner;
the first detection column (1) and the second detection column (2) each comprise: the laser radar control device comprises a control unit (4), a fluxgate sensor group (5), a grading LED lamp group (6), a laser radar sensor (7) and a wireless communication unit (8), wherein the fluxgate sensor group (5), the grading LED lamp group (6) and the laser radar sensor (7) are respectively and electrically connected with the control unit (4);
the control unit (4) is electrically connected with the processing module (3) through the wireless communication unit (8);
and the first detection column (1) and the second detection column (2), further comprising: the double-mode switching switch (9) and the buzzer (10) are respectively and electrically connected with the control unit (4).
2. The intelligent hierarchical early warning ferromagnetic detection system according to claim 1, characterized in that the set of fluxgate sensors (5) comprises: an upper fluxgate sense node (51), a middle fluxgate sense node (52) and a lower fluxgate sense node (53).
3. The intelligent hierarchical early warning ferromagnetic detection system according to claim 2, characterized in that the hierarchical LED light group (6) comprises: a main LED lamp node (60), an upper LED lamp node (61), a middle LED lamp node (62) and a lower LED lamp node (63).
4. An intelligent hierarchical early warning ferromagnetic detection system according to claim 1 or 3, characterized in that said wireless communication unit (8) comprises: bluetooth or WIFI.
5. The intelligent hierarchical early warning ferromagnetic detection system according to claim 1, characterized in that the control unit (4) is a DSP controller.
6. The intelligent hierarchical early warning ferromagnetic detection system according to claim 1, wherein the processing module (3) is further electrically connected to a CCTV monitoring camera (12), a display (13) and a horn (11).
7. The intelligent hierarchical early warning ferromagnetic detection system according to claim 1, characterized in that the first detection column (1) and the second detection column (2) perform ferromagnetic detection, comprising the steps of:
networking the first detection column (1) and the second detection column (2) through the wireless communication unit (8) in advance to form a detection matrix, wherein in a fluxgate sensor group (5) of the first detection column (1) and the second detection column (2), magnetic field intensity signals of all fluxgate sensors from top to bottom are respectively expressed as: (A1.) An) and (B1.) Bn, wherein n is greater than or equal to 3,
(a 1) of the fluxgate sensor group (5). An) and (b 1.) magnetic fields. The signals are converted into magnetic field strength data xa1..xan and xb1.. Xbn, forming a matrix, expressed as:
the magnetic field signal position of the fluxgate sensor group (5) corresponding to the maximum magnetic field intensity is expressed as the current ferromagnetic position.
8. The intelligent hierarchical early warning ferromagnetic detection system according to claim 7, wherein the step of performing risk hierarchical early warning on the current ferromagnetic position comprises the steps of:
presetting a magnetic field intensity safety threshold variable, wherein a red light threshold is represented as S1, an orange light threshold is represented as S2, a blue light threshold is represented as S3, a magnetic field intensity difference threshold variable is represented as M, and an initial value is preset by an M value user;
wherein, when the front ferromagnetic object moves near a certain fluxgate sensor An or Bn:
if the magnetic field strength is: if the magnetic field intensity of the ferromagnetic object is larger and exceeds the red light threshold value S1, the ferromagnetic object moves near the middle of the two detection columns;
if the magnetic field strength is: when the magnetic field intensity of the ferromagnetic object is larger but not exceeding the red light threshold value S1, the ferromagnetic object moves near the middle of the two detection columns;
if the magnetic field strength is: when the value of Xan-Xbn is larger than M, the following conditions are continuously judged:
if the magnetic field strength is: s1< Xan < S2 or S1< Xbn < S2, then a moderate risk is determined;
if the magnetic field strength is: s2< Xan < S3 or S2< Xbn < S3, then low risk is determined;
if the magnetic field strength is: xan < S3 or Xbn < S3, then no risk is determined;
xan > Xbn, then determining that the ferromagnetic substance is moving close to the first detection column (1);
xan < Xbn, then determining that the ferromagnetic substance is moving close to the second detection column (2);
the accurate position and risk degree of the ferromagnetic object are obtained, and the alarm lamp with the corresponding color of the corresponding position is lightened and the audio early warning is sent.
CN202310948775.0A 2023-07-31 2023-07-31 Intelligent grading early warning ferromagnetic detection system Pending CN117111167A (en)

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CN202310948775.0A CN117111167A (en) 2023-07-31 2023-07-31 Intelligent grading early warning ferromagnetic detection system

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Application Number Priority Date Filing Date Title
CN202310948775.0A CN117111167A (en) 2023-07-31 2023-07-31 Intelligent grading early warning ferromagnetic detection system

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CN117111167A true CN117111167A (en) 2023-11-24

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