CN109031173A - Nuclear-magnetism shielding and metal detection integrated door - Google Patents
Nuclear-magnetism shielding and metal detection integrated door Download PDFInfo
- Publication number
- CN109031173A CN109031173A CN201810657066.6A CN201810657066A CN109031173A CN 109031173 A CN109031173 A CN 109031173A CN 201810657066 A CN201810657066 A CN 201810657066A CN 109031173 A CN109031173 A CN 109031173A
- Authority
- CN
- China
- Prior art keywords
- metal detection
- nuclear
- doorframe
- master control
- circuit board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002184 metal Substances 0.000 title claims abstract description 111
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 111
- 238000001514 detection method Methods 0.000 title claims abstract description 93
- 230000005311 nuclear magnetism Effects 0.000 title claims abstract description 49
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000005481 NMR spectroscopy Methods 0.000 abstract description 20
- 238000007689 inspection Methods 0.000 abstract description 7
- 238000001727 in vivo Methods 0.000 abstract description 4
- 229910001369 Brass Inorganic materials 0.000 description 4
- 239000010951 brass Substances 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000003759 clinical diagnosis Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 208000029257 vision disease Diseases 0.000 description 1
Classifications
-
- 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
- G01R33/42—Screening
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/06—Devices, other than using radiation, for detecting or locating foreign bodies ; determining position of probes within or on the body of the patient
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (AREA)
- Remote Sensing (AREA)
- General Physics & Mathematics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Public Health (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Environmental & Geological Engineering (AREA)
- Epidemiology (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Human Computer Interaction (AREA)
- Electromagnetism (AREA)
- Radiology & Medical Imaging (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Burglar Alarm Systems (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a kind of shieldings of nuclear-magnetism and metal detection integrated door, including the nuclear-magnetism shield door being used in conjunction with each other and doorframe；Several metal detection heads, along the circumferential direction arranged for interval of doorframe；Master control circuit board is connect with each metal detection head；Alarm is connect with master control circuit board；Master control circuit board is used for when receiving the metal signal that metal detection head is exported, and sounds an alarm instruction to alarm.More dry metal detection heads are arranged in the present invention in the doorframe of nuclear magnetic resonance check room, and alarm is arranged outside doorframe.When the external staff for carrying metal object with it enters doorframe range, metal detection head detects metal signal and is sent to master control circuit board, master control circuit board then triggers alarm and sounds an alarm, tested external staff is reminded to halt, to avoid external staff from accidentally bringing metal into inspection chamber, more particularly to reduce carry in vivo metallic support sufferer enter nuclear magnetic resonance check room and caused by malpractice.
Description
Technical field
The present invention relates to Articles detecting fields, and in particular to a kind of shielding of nuclear-magnetism and metal detection integrated door.
Background technique
NMR imaging instrument is the another major progress of the Medical Imaging after CT.From the eighties application since, it with
The speed being exceedingly fast is developed.Nuclear magnetic resonance is a kind of physical phenomenon, is widely used in physics as a kind of analysis means, changes
It is used for clinical medicine detection to ability in 1973, due to its powerful clinical diagnosis function, at present by the fields such as, biology
Through being developing progressively important medicine detection means, more and more NMR imaging instruments are mounted to situation of all-level hospitals.
It is very powerful due to existing in nuclear magnetic resonance machine and nuclear magnetic resonance check room when carrying out nuclear magnetic resonance check
Magnetic field, therefore forbid sufferer and enter inspection chamber staff carry metal object, more in vivo equipped with branch
The patient of the metal objects such as frame absolutely prohibits doing nuclear magnetic resonance check, and metal is otherwise easy to cause to be moved by the attraction of strong magnetic field,
There may be serious consequence so that life danger.
Generally the nuclear magnetic resonance check room of hospital outdoors, have red or yellow eye-catcher indicate absolutely forbid into
The case where row nuclear magnetic resonance check.It is still unavoidable to have patient's mistake once in a while although there is the prompting of warning mark and doctor
It brings metal into inspection chamber, has finally led to great malpractice.
Summary of the invention
The main purpose of the present invention is to provide a kind of shieldings of nuclear-magnetism and metal detection integrated door, it is intended to solve nuclear magnetic resonance
The problem of warning mark of inspection chamber outdoors can not effectively prevent patient accidentally to bring metal into inspection chamber.
In order to solve the above technical problems, the present invention proposes a kind of shielding of nuclear-magnetism and metal detection integrated door,
Include:
The nuclear-magnetism shield door and doorframe being used in conjunction with each other；
Several metal detection heads, along the circumferential direction arranged for interval of the doorframe；
Master control circuit board is connect with each metal detection head；
Alarm is connect with the master control circuit board；
The master control circuit board is used for when receiving the metal signal that the metal detection head is exported, to the alarm
Device sounds an alarm instruction.
Preferably, the top on edge and vertical side in the doorframe, have been respectively provided at least the metal detection head.
Preferably, electromagnetic shielding plate is provided between the adjacent two metal detection heads.
Preferably, nuclear-magnetism shielding and metal detection integrated door further include being set between the nuclear-magnetism shield door and doorframe
Electric control lock, the electric control lock are connect with the master control circuit board, the unlocking and locking issued for receiving the master control circuit board
Instruction.
Preferably, nuclear-magnetism shielding and metal detection integrated door further include the pressure sensing for being set to ground below the doorframe
Device, the pressure sensor are connect with the master control circuit board, are changed for acquiring geostatic pressure below doorframe and are fed back to institute
State master control circuit board.
Preferably, the alarm includes LED light and/or buzzer.
Preferably, the metal detection head includes transmitting coil, two receiving coils and signal processing unit, the emission lines
Circle occupy between two receiving coils, and two receiving coils reversely couple and are symmetrically disposed in the transmitting coil two sides；It is described
The input terminal of signal processing unit is connect with the output end of two receiving coils, the output end of the signal processing unit and described total
Control circuit board connection.
Preferably, the signal processing unit includes for providing the high frequency vibrating that high-frequency current drives to the transmitting coil
Device and tuned amplifier and wave detector are swung, the tuned amplifier and wave detector are respectively used to the defeated of the receiving coil
Signal carries out frequency-selecting amplification and detection out.
Metal detection head is arranged in the present invention in the doorframe of nuclear magnetic resonance check room, and alarm is arranged outside doorframe.With
When carrying the external staff of metal object and entering doorframe range, metal detection head detects metal signal and is sent to master control electricity
Road plate, master control circuit board then trigger alarm and sound an alarm, and tested external staff is reminded to halt, so that external staff be avoided to miss
Bring metal into inspection chamber, more particularly to reduce carry in vivo metallic support sufferer enter nuclear magnetic resonance check room and caused by
Malpractice.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of nuclear-magnetism of the present invention shielding and one embodiment of metal detection integrated door；
Fig. 2 is the electronic control module structural schematic diagram of nuclear-magnetism of the present invention shielding and the another embodiment of metal detection integrated door.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 100 | Nuclear-magnetism shield door | 333 | Wave detector |
| 200 | Doorframe | 334 | Low-frequency amplifier |
| 300 | Metal detection head | 400 | Master control circuit board |
| 310 | Transmitting coil | 500 | Alarm |
| 320 | Receiving coil | 600 | Electric control lock |
| 330 | Signal processing unit | 700 | Pressure sensor |
| 331 | High frequency oscillator | 800 | Pressure release window |
| 332 | Tuned amplifier |
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention, based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
The present invention proposes a kind of shielding of nuclear-magnetism and metal detection integrated door,
As shown in Figure 1, comprising:
The nuclear-magnetism shield door 100 and doorframe 200 being used in conjunction with each other；
Several metal detection heads 300, along the circumferential direction arranged for interval of doorframe 200；
Master control circuit board 400 is connect with each metal detection head 300；
Alarm 500 is connect with master control circuit board 400；
Master control circuit board 400 is used for when receiving the metal signal that metal detection head 300 is exported, to alarm 500
Sound an alarm instruction.
Wherein, nuclear-magnetism shield door 100 uses nuclear-magnetism shielding material, and outer layer covers have brass, prevent nuclear-magnetism reveal and
Equipment, which impacts, to be checked to nuclear-magnetism.Metal detection head 300 is installed in such a way that detection direction is parallel to doorframe plane, such as
Metal detection head 300 positioned at 200 two sides of doorframe, metal of the detection direction towards 200 opposite side of doorframe, positioned at 200 top of doorframe
Detecting head 300, detection direction is towards underface, so that a test surface be integrally formed.
Nuclear-magnetism shield door 100 is used in conjunction with each other with doorframe 200: under normal circumstances, the open-close ways of door have to be revolved around dead axle
The slidingtype of the door leaf formula and opposite doorframe translational motion that turn.For the open-close ways of former door, as shown in Figure 1, nuclear-magnetism screen
The side connecting by nonmetallic hinge connection, doorframe 200 with nuclear-magnetism shield door 100 between door 100 and doorframe 200 is covered, it can be with
Be not provided with metal detection head 300, i.e., metal detection head 300 only arranged for interval in the top of doorframe 200 and doorframe 200 and core
The opposite side that magnetic screen door 100 connects.As shown in Figure 1, doorframe 200 has certain thickness, generally 8-12 centimetres, in nuclear-magnetism
When shield door 100 is opened, since nuclear-magnetism shield door 100 leaves the detection range of metal detection head 300 in doorframe 200, no
The detection result of metal detection head 300 can be impacted.For the open-close ways of latter door, nuclear-magnetism shield door 100 is located at
(by indoor side) edge setting of 200 top and bottom of doorframe is parallel in the guide rail of doorframe, is slided along the guide rail.
At this point, metal detection head 300 may be disposed at top and opposite sides face (or only wherein side) of doorframe 200, due to doorframe 200
With certain thickness, therefore nuclear-magnetism shield door 100 will not will not visit metal in the detection range of metal detection head 300 always
The detection result of gauge head 300 impacts.
When carry with it metal object (such as pacemaker, camera, with the instrument of cathode-ray tube) outside
Personnel enter 200 range of doorframe, i.e., in the test surface that is formed of metal detection head 300 when, the metal detection head 300 in doorframe 200
It detects metal signal, and the metal signal is sent to master control circuit board 400, master control circuit board 400 is then sent out to alarm 500
Alarm command out, triggering alarm 500 sound an alarm, so that tested external staff be reminded to halt, and remind staff couple
This is paid close attention to, and prevents the external staff from entering nuclear magnetic resonance check room.The present invention carries metal with can effectively prevent
Personnel enter nuclear magnetic resonance check room, to avoid the interference for checking nuclear-magnetism equipment, it is particularly possible to avoid many taking in vivo
Sufferer with metallic support enter nuclear magnetic resonance check room and caused by malpractice.
In addition, several metal detection heads 300 are arranged along doorframe 200 in array, each gold is reduced to a certain extent
The area for belonging to detecting head 300, to increase the accuracy of each metal detection head 300.
In a preferred embodiment, since nuclear magnetic resonance check room is a special environment, because of superconducting magnetic under the environment
When quenching, liquid helium can cause shielding room pressure to increase in magnetic resonance equipment with 1: 700 ratio transient evaporation for resonance.Cause
This can install dismountable pressure release window 800 in the 100 middle part aperture of nuclear-magnetism shield door, as shown in Figure 1, the pressure release window 800 is towards core
Side is provided with lock in magnetic inspection chamber, and pressure release window 800 is fixed by latching with door-plate.To further prevent nuclear-magnetism to reveal, core
The surrounding of 100 middle part aperture of magnetic screen door wraps up layer of brass, likewise, the surrounding of pressure release window 800 also wraps up layer of brass.Pressure release window
Be additionally provided with elastic component, such as reed, rubber ring etc. on the layer of brass of 800 surroundings, elastic component and door-plate under squeezing it is deformable simultaneously
It is tightly connected with door-plate.In use, when being quenched in nuclear magnetic resonance check room or when other contingencies, being located at nuclear magnetic resonance
Check that indoor personnel can open 800 quick pressure releasing of pressure release window by lock, so as to smoothly push nuclear-magnetism shield door 100 open
Escape.
In a preferred embodiment, as shown in Figure 1, the top on edge and vertical side in doorframe 200, have been respectively provided at least
One metal detection head 300.
In the present embodiment, when nuclear-magnetism shield door 100 uses the door open-close ways of hinge-type, the top of doorframe 200 and and core
The opposite side that magnetic screen door 100 connects is respectively at least provided with a metal detection head 300.Nuclear-magnetism shield door 100 is using plug-type
When open-close ways, then at least one metal detection head can be respectively arranged in the top and two sides of doorframe.
Wherein, if in the case where only one, metal detection head 300 of the top of doorframe 200, in order to make its detection gold
The range for belonging to article is met the requirements, and metal detection head 300 is configured to rectangle, for example its length is close to the width of doorframe 200
Degree；The metal detection head 300 at for another example top of doorframe 200 have it is multiple, it is appropriate in addition to retaining between adjacent metal detecting head 300
Spacing, the coverage area that all metal detection heads 300 combine and reach also should be close to the width of doorframe 200.Similarly,
If height should be close to the height of doorframe 200 in the case where only one, metal detection head 300 of 200 two sides of doorframe；
If certain side of doorframe 200 is provided with multiple, multiple metal detection heads 300 of side setting combine and the covering that reaches
Range also should be close to the height of doorframe 200.So that it is guaranteed that into any position of the indoor personnel whole body of magnetic resonance detection
Enter the room without metal carrying.
In a preferred embodiment, electromagnetic shielding plate is provided between adjacent two metal detections head 300.
In the present embodiment, electromagnetic shielding plate is plate structure, is installed vertically in doorframe 200 often by nonmetallic installation part
Between two metal detection heads 300, and it is vertical with the coil of two metal detection heads 300 respectively, to prevent 300 phase of metal detection head
Electromagnetic signal between mutually interferes with each other.Wherein, nonmetallic installation part may be configured as T-shaped, and both wings pass through nonmetallic rivet
Or screw is fixed on doorframe 200, extension is provided with U-lag, and electromagnetic shielding plate is fixed on the U-shaped by way of grafting
In slot.
In a preferred embodiment, as shown in Figure 1, nuclear-magnetism shielding and metal detection integrated door further include being set to nuclear-magnetism screen
The electric control lock 600 between door 100 and doorframe 200 is covered, as shown in Fig. 2, electric control lock 600 is connect with master control circuit board 400, for connecing
Receive unlocking and blocking order that master control circuit board 400 issues.
The present embodiment is suitable for the case where nuclear-magnetism shield door 100 is hinge-type inward swinging door or sliding door, electric control lock 600
Tapered end and keyhole are separately mounted on doorframe 200 and nuclear-magnetism shield door 100, and master control circuit board 400 receives metal detection head 300
When the metal signal of output, blocking order is issued to electric control lock 600, so that nuclear-magnetism shield door 100 be closed.Electric control lock 600 is answered
When being in normally off, nuclear-magnetism shield door 100 is inside and outside to be respectively equipped with a switch for directly manipulating the opening and closing of electric control lock 600,
Wherein, external switch is connected with master control circuit board 400, when master control circuit board 400 does not receive the metal of the output of metal detection head 300
When signal, external switch can directly open electric control lock 600；Internal switch is in parallel with external switch, master control circuit board 400, detection
Indoor occupant directly can open electric control lock 600 by the internal switch.
In a preferred embodiment, as shown in Fig. 2, nuclear-magnetism shielding and metal detection integrated door further include being set to doorframe
The pressure sensor 700 of 200 lower sections ground, pressure sensor 700 are connect with master control circuit board 400, for acquiring under doorframe 200
Square geostatic pressure changes and feeds back to master control circuit board 400.
The pressure sensor 700 is located at the ground of 200 lower section of doorframe, and preferably doorframe 200 is toward outdoor 30-60cm, about
Half step pitch from, pressure sensor 700 (single or multiple parallel connections) is set as ground cushion pattern, when someone stands on the ground cushion,
Pressure sensor 700 then detects that geostatic pressure increases suddenly at this, and immediate feedback is to master control circuit board 400.Due to master control
Circuit board 400 and metal detection head 300, to save electric energy, are equipped with one by power supply power supply between metal detection head 300 and power supply
Switch, which is controlled by master control circuit board 400, and keeps normal off open state.When pressure sensor 700 detects ground at this
When pressure increases suddenly, which is fed back into master control circuit board 400, if the detection data is more than master control circuit board 400
Preset pressure value, then be determined as at this that ground someone stands, therefore the switch between metal detection head 300 and power supply is connect
It is logical, to wake up the start-up operation of metal detection head 300.
Preferably, alarm 500 includes LED light and/or buzzer.It is preferred that the LED of the conspicuous colors such as red or yellow
Lamp as alarm 500, alarm 500 be triggered alarm when, LED light flashing, to warn.Buzzer be triggered alarm when then
It beeps to warn.The present invention preferably concurrently sets LED light and buzzer, (listens barrier as existed to adapt to different sufferers
Or vision disorder) demand.
In a preferred embodiment, as shown in Fig. 2, metal detection head 300 includes transmitting coil 310, two receiving coils 320
With signal processing unit 330, transmitting coil 310 occupy between two receiving coils 320 and seperated respectively independent, two receiving coils
320 reversely couple and are symmetrically disposed in 310 two sides of transmitting coil；The input terminal of signal processing unit 330 and two receiving coils
320 output end connection, the output end of signal processing unit 330 are connect with master control circuit board 400.
Metal detection head connects power supply energy supply, and transmitting coil 310 forms alternating electromagnetism in doorframe 200 under electric current driving
?.When in doorframe 200 without metal, the induced electromotive force of the receiving coil 320 reversely coupled is cancelled out each other, no signal output.
When there is metal to enter doorframe 200, induced current inside metal object, the current induced magnetic field, to destroy transmitting coil 310
There is imbalance in the symmetry of two sides alternating electromagnetic field, and at this moment receiving coil 320 just generates a signal output, at signal
After reason unit 330 handles the output signal, metal signal therein is selected out.Signal processing unit 330 and report
Alert device 500 connects, and master control circuit board 400, master control circuit board are sent to when signal processing unit 330 selects out metal signal
400 are triggered alarm 500 and sounded an alarm.
In a preferred embodiment, as shown in Fig. 2, signal processing unit 330 includes for providing height to transmitting coil 310
The high frequency oscillator 331 and tuned amplifier 332 and wave detector 333, tuned amplifier 332 and wave detector of frequency electric current driving
333 for carrying out frequency-selecting amplification and detection for the output signal of receiving coil 320 respectively.
Wherein, high frequency oscillator 331 is energized by power supply, and transmitting coil 310 drives in the high-frequency current of high frequency oscillator 331
Under, high frequency alternating electromagnetic field is formed in doorframe 200.When there is metal in doorframe 200, receiving coil 320 generates high frequency modulation
Width signal output, wherein the oscillation wave of high frequency oscillator 331 is carrier wave, metal signal is modulating wave, and the mixed recharge is by tuning
After 332 frequency-selecting amplification of amplifier, 333 detection of wave detector, metal signal therein is selected out, metal signal is amplified by low frequency again
Device 334 amplifies, and enlarged metal signal is then sent to master control circuit board 400 and is handled.
It it is to be appreciated that the technical solution between each embodiment of the present invention can be combined with each other, but must be with ability
Based on domain those of ordinary skill can be realized, it will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of this technical solution is not present, also not within the scope of protection of present invention.
Above is only part or preferred embodiment of the invention, therefore either text or attached drawing cannot all limit this
The range of protection is invented to be made under all designs with an entirety of the invention using description of the invention and accompanying drawing content
Equivalent structure transformation, or directly/be used in other related technical areas indirectly and be included in the scope of protection of the invention.
Claims (8)
1. a kind of nuclear-magnetism shielding and metal detection integrated door characterized by comprising
The nuclear-magnetism shield door and doorframe being used in conjunction with each other；
Several metal detection heads are arranged along the circumferential direction interval of the doorframe；
Master control circuit board is connect with each metal detection head；
Alarm is connect with the master control circuit board；
The master control circuit board is used to issue when receiving the metal signal of the metal detection head output to the alarm
Alarm command.
2. nuclear-magnetism as described in claim 1 shielding and metal detection integrated door, which is characterized in that the top of the doorframe and perpendicular
Straight sided has been respectively provided at least the metal detection head.
3. nuclear-magnetism shielding as described in claim 1 and metal detection integrated door, which is characterized in that adjacent two metal detection
Electromagnetic shielding plate is provided between head.
4. nuclear-magnetism shielding as described in claim 1 and metal detection integrated door, which is characterized in that further include being set to the core
Electric control lock between magnetic screen door and doorframe, the electric control lock are connect with the master control circuit board, for receiving the master control electricity
The unlocking and blocking order that road plate issues.
5. nuclear-magnetism as described in claim 1 shielding and metal detection integrated door, which is characterized in that further include may be disposed at it is described
The pressure sensor on ground, the pressure sensor are connect with the master control circuit board below doorframe, for acquiring below doorframe
Geostatic pressure changes and feeds back to the master control circuit board.
6. nuclear-magnetism shielding as described in claim 1 and metal detection integrated door, which is characterized in that the alarm includes LED
Lamp and/or buzzer.
7. nuclear-magnetism shielding and metal detection integrated door as described in any one of claim 1-6, which is characterized in that the gold
Belonging to detecting head includes transmitting coil, two receiving coils and signal processing unit, and the transmitting coil is set with the stacking of two receiving coils
It sets, two receiving coils reversely couple and are symmetrically disposed in the transmitting coil two sides；The input terminal of the signal processing unit
It is connect with the output end of two receiving coils, the output end of the signal processing unit is connect with the master control circuit board.
8. nuclear-magnetism shielding as claimed in claim 7 and metal detection integrated door, which is characterized in that the signal processing unit packet
It includes for providing the high frequency oscillator and tuned amplifier and wave detector that high-frequency current drives to the transmitting coil, it is described
Tuned amplifier and wave detector are respectively used to the output signal of the receiving coil carrying out frequency-selecting amplification and detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810657066.6A CN109031173A (en) | 2018-06-21 | 2018-06-21 | Nuclear-magnetism shielding and metal detection integrated door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810657066.6A CN109031173A (en) | 2018-06-21 | 2018-06-21 | Nuclear-magnetism shielding and metal detection integrated door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109031173A true CN109031173A (en) | 2018-12-18 |
Family
ID=64610960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810657066.6A Pending CN109031173A (en) | 2018-06-21 | 2018-06-21 | Nuclear-magnetism shielding and metal detection integrated door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109031173A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112596109A (en) * | 2020-12-07 | 2021-04-02 | 中广核久源（成都）科技有限公司 | Personnel radioactivity and metal detection integrated device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2371566Y (en) * | 1999-05-26 | 2000-03-29 | 王祥驳 | Door type metal detector |
| CN201246079Y (en) * | 2008-07-24 | 2009-05-27 | 陈正星 | Improved structure of airtight door |
| CN203081213U (en) * | 2012-12-06 | 2013-07-24 | 深圳市贝斯达医疗器械有限公司 | Shielding gate with metal detector device |
| CN204663335U (en) * | 2015-05-21 | 2015-09-23 | 余乐 | A kind of Novel pressure balance escape |
| CN204738703U (en) * | 2015-05-28 | 2015-11-04 | 常州利明屏蔽有限公司 | Shielding emergency exits |
| CN205826881U (en) * | 2016-07-14 | 2016-12-21 | 陈淼 | The special detector gate in oxygen cabin |
| CN208636414U (en) * | 2018-06-21 | 2019-03-22 | 深圳市泛亚环境工程开发设计股份有限公司 | Nuclear-magnetism shielding and metal detection integrated door |
-
2018
- 2018-06-21 CN CN201810657066.6A patent/CN109031173A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2371566Y (en) * | 1999-05-26 | 2000-03-29 | 王祥驳 | Door type metal detector |
| CN201246079Y (en) * | 2008-07-24 | 2009-05-27 | 陈正星 | Improved structure of airtight door |
| CN203081213U (en) * | 2012-12-06 | 2013-07-24 | 深圳市贝斯达医疗器械有限公司 | Shielding gate with metal detector device |
| CN204663335U (en) * | 2015-05-21 | 2015-09-23 | 余乐 | A kind of Novel pressure balance escape |
| CN204738703U (en) * | 2015-05-28 | 2015-11-04 | 常州利明屏蔽有限公司 | Shielding emergency exits |
| CN205826881U (en) * | 2016-07-14 | 2016-12-21 | 陈淼 | The special detector gate in oxygen cabin |
| CN208636414U (en) * | 2018-06-21 | 2019-03-22 | 深圳市泛亚环境工程开发设计股份有限公司 | Nuclear-magnetism shielding and metal detection integrated door |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112596109A (en) * | 2020-12-07 | 2021-04-02 | 中广核久源（成都）科技有限公司 | Personnel radioactivity and metal detection integrated device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10191176B2 (en) | Door assembly for an MRI room | |
| US7113092B2 (en) | Ferromagnetic object detector | |
| EP1482832B1 (en) | Mri protector | |
| US20190272396A1 (en) | Rfid scanning device | |
| JP3008139B2 (en) | Magnetic shielding room with sliding door | |
| US20140117989A1 (en) | Protective cover for mri | |
| US20080143524A1 (en) | Wireless Detection System | |
| CN208636414U (en) | Nuclear-magnetism shielding and metal detection integrated door | |
| CN208419323U (en) | Blood refrigerating cabinet with mistake proofing warning function | |
| CN109031173A (en) | Nuclear-magnetism shielding and metal detection integrated door | |
| US20150033628A1 (en) | On Demand Modular Ingress/Egress Control Mechanism | |
| JP2008017989A (en) | Magnetic material sensing system and method of preventing carry-in of magnetic instruments | |
| CN103530922A (en) | Exit safety detection device | |
| CN210105675U (en) | Safe nuclear magnetic resonance shielding door access device | |
| US20190346517A1 (en) | Modular magnetic resonance imaging protection sytem | |
| CN208926395U (en) | It is a kind of for saving the constant temperature storage bin of contrast agent | |
| Gagnon | Field trial results using a novel integration of unique millimeterwave Doppler radar for high performance non-obtrusive life sign (breathing and heart beating) monitoring of high suicide risk prisonner in observation cell | |
| JPH03272739A (en) | Magnetic resonance imaging device | |
| CN207328383U (en) | The caravan combination of linkage security protection | |
| CN208938285U (en) | A kind of outdoor transformer burglar alarm integrated apparatus | |
| CN211577999U (en) | Safety house device convenient to detect | |
| CN208925478U (en) | Intelligent blood cabinet | |
| CN114482713A (en) | Multifunctional intelligent door lock of electric control cabinet | |
| CN201615899U (en) | Safety detection door of motor vehicle | |
| CN208460139U (en) | A kind of modularization Infrared Monitor System |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |