CN112714537A - Lighting device and magnetic resonance system - Google Patents
Lighting device and magnetic resonance system Download PDFInfo
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- CN112714537A CN112714537A CN202011621719.9A CN202011621719A CN112714537A CN 112714537 A CN112714537 A CN 112714537A CN 202011621719 A CN202011621719 A CN 202011621719A CN 112714537 A CN112714537 A CN 112714537A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
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- 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
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
- H05B39/04—Controlling
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/34—Voltage stabilisation; Maintaining constant voltage
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/60—Circuit arrangements for operating LEDs comprising organic material, e.g. for operating organic light-emitting diodes [OLED] or polymer light-emitting diodes [PLED]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
The invention relates to a lighting device and a magnetic resonance system, wherein the lighting device comprises an energy storage device and a light source, the energy storage device is electrically connected with the light source, and the energy storage device is used for converting magnetic energy generated during magnetic resonance scanning into electric energy and then storing the electric energy and supplying power to the light source; the light source is used for illumination. According to the invention, the energy storage device is arranged, so that during the magnetic resonance sequence scanning, the variable escape field generated by exciting and encoding the target by the high-power radio frequency coil and the gradient coil is induced, electric energy is generated and stored for the light source to emit light, and therefore, no extra power supply is needed, no extra power consumption is caused, the interference risk generated when an external power supply line is introduced is reduced, and in addition, the complexity of a system cable is reduced.
Description
Technical Field
The invention relates to the technical field of magnetic resonance scanning, in particular to an illuminating device and a magnetic resonance system.
Background
At present, a magnetic resonance system basically adopts a superconducting method, a patient needs to enter a scanning aperture in the scanning process, the aperture of a magnet is mostly longer, and the light of a middle part is dark, so that a dark cavity in the aperture needs to be illuminated in the examination process in order to relieve the tension of the patient (especially for claustrophobia patients).
The conventional in-aperture illumination system is composed of two parts, namely a light source and a power supply, the conventional power supply is generally arranged outside a scanning aperture of the magnetic resonance system, and then the light source is connected from the outside of the scanning aperture of the magnetic resonance system through a cable to supply power to the light source, so that the circuit is complex, extra power is consumed, and when an external power supply is introduced, interference risk can be brought to magnetic resonance scanning.
Disclosure of Invention
In view of the above, there is a need to provide an illumination apparatus and a magnetic resonance system, so as to solve the problem that the light source needs to be powered from an external lead during the current magnetic resonance scanning illumination.
In a first aspect, the present invention provides a lighting device comprising an energy storage device and a light source, the energy storage device being electrically connected to the light source, wherein,
the energy storage device is used for converting magnetic energy generated during magnetic resonance scanning into electric energy to be stored and supplying power to the light source;
the light source is used for illumination.
Preferably, in the lighting device, the energy storage device includes an electromagnetic induction module and an energy storage module, the electromagnetic induction module is electrically connected with the energy storage module, wherein,
the electromagnetic induction module is used for converting magnetic energy generated during magnetic resonance scanning into electric energy;
the energy storage module is used for storing the electric energy generated by the electromagnetic induction module and supplying power to the light source.
Preferably, in the lighting device, the electromagnetic induction module includes at least one electromagnetic induction coil, both ends of the electromagnetic induction coil are electrically connected to the energy storage module, and the electromagnetic induction coil is configured to generate an alternating current after inducing a changing magnetic field generated during magnetic resonance scanning.
Preferably, in the lighting device, the lighting device further includes a rectifying and filtering module, the rectifying and filtering module is electrically connected with the electromagnetic induction module and the energy storage module, wherein,
the rectification filtering module is used for rectifying and filtering the electric energy generated by the electromagnetic induction module and then charging the energy storage module so that the energy storage module stores the electric energy and supplies power to the light source.
Preferably, in the lighting device, the energy storage module further includes a charge and discharge control module, the charge and discharge control module is connected between the rectifying and filtering module and the energy storage module and between the energy storage module and the light source, and the charge and discharge control module is configured to control charge and discharge of the energy storage module.
Preferably, in the lighting device, the energy storage module further includes an electric quantity detection module, the electric quantity detection module is electrically connected to the energy storage module and the charge and discharge control module, and the electric quantity detection module is configured to detect the electric energy stored in the energy storage module, and send a control signal to the charge and discharge control module when the electric energy stored in the energy storage module exceeds a preset value, so that the charge and discharge control module disconnects the rectifying and filtering module from the energy storage module.
Preferably, in the lighting device, the energy storage module further includes a voltage stabilizing module, the voltage stabilizing module is connected between the energy storage module and the light source, and the voltage stabilizing module is configured to convert the voltage of the electric energy output by the energy storage module and supply the electric energy to the light source.
Preferably, in the lighting device, the energy storage device is disposed in a scan aperture dark cavity of the magnetic resonance system.
Preferably, in the lighting device, the light source is disposed in a scan aperture dark cavity of the magnetic resonance system.
In a second aspect, the invention also provides a magnetic resonance system comprising an illumination device as described above.
Compared with the prior art, the lighting device and the magnetic resonance system provided by the invention have the advantages that the energy storage device is arranged, during the magnetic resonance sequence scanning, the high-power radio-frequency coil and the gradient coil are induced to excite and encode a target to generate a changed escape field, electric energy is generated and then stored, and the electric energy is used for light emission of the light source, so that an additional power supply is not needed, the extra power consumption is not needed, the interference risk generated when an external power supply line is introduced is reduced, and in addition, the complexity of a system cable is reduced.
Drawings
Fig. 1 is a block diagram of a lighting device according to a preferred embodiment of the present invention;
fig. 2 is a block diagram of a preferred embodiment of the energy storage device in the lighting device provided in the present invention;
FIG. 3 is a block diagram of a lighting device according to a preferred embodiment of the present invention for storing and converting electrical energy;
fig. 4 is a schematic diagram of a preferred embodiment of the lighting device provided in the present invention.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
Referring to fig. 1, the lighting device according to the embodiment of the present invention includes an energy storage device 100 and a light source 200, where the energy storage device 100 is electrically connected to the light source 200.
Specifically, the energy storage device 100 is configured to convert magnetic energy generated during magnetic resonance scanning into electric energy and store the electric energy, and supply power to the light source 200, during magnetic resonance sequence scanning, the radio frequency coil and the gradient coil excite and encode a target, so as to generate a greatly varying stray field, and the energy storage device 100 may induce the varying stray field to generate electric energy and store the electric energy, so as to provide light for the light source 200 to emit light.
The light source 200 is used for illuminating the bore of the magnetic resonance system during the examination process, thereby relieving the tension of the patient.
In addition, because the energy storage device 100 directly utilizes the varied escape field generated during the magnetic resonance scanning to generate electric energy, extra power consumption is not needed, energy is saved, and magnetic energy is effectively utilized.
Referring to fig. 2, in an embodiment, the energy storage device 100 includes an electromagnetic induction module 110 and an energy storage module 120, the electromagnetic induction module 110 is electrically connected to the energy storage module 120, wherein,
the electromagnetic induction module 110 is configured to convert magnetic energy generated during magnetic resonance scanning into electric energy, and when a magnetic resonance sequence is scanned, the electromagnetic induction module 110 induces a changing magnetic field to generate an alternating current, and the alternating current is transmitted to the energy storage module 120.
The energy storage module 120 is configured to store electric energy generated by the electromagnetic induction module 110 and supply power to the light source 200, and after the electromagnetic induction module 110 generates electric energy, the energy storage module 120 performs charging on one hand and also outputs electric energy to supply power to the light source 200 on the other hand.
Referring to fig. 4, in a preferred embodiment, in order to implement electromagnetic induction, the electromagnetic induction module 110 includes at least one electromagnetic induction coil L, two ends of the electromagnetic induction coil L are electrically connected to the energy storage module 120, and the electromagnetic induction coil L is configured to generate an alternating current after inducing a changing magnetic field generated during magnetic resonance scanning, and then output the alternating current to the energy storage module 120. When the electromagnetic induction coil L induces a changing magnetic field, the electromagnetic induction coil L may induce to generate electric energy according to an electromagnetic induction principle, and then output the electric energy to the energy storage module 120.
It should be noted that, in the embodiment of the present invention, the number of the electromagnetic induction coils L may be any number, and in order to implement fast energy storage, in the embodiment of the present invention, the number of the electromagnetic induction coils L may be set to be multiple, for example, 3, and the multiple electromagnetic induction coils L generate electric energy simultaneously and then output the electric energy to the energy storage module 120, so that the energy storage module 120 implements fast charging. Of course, in other embodiments, the number of the electromagnetic induction coils L may be other, and only the alternating current needs to be generated.
Further, it should be understood that the electromagnetic induction coil L described in the embodiment of the present invention includes not only the coil but also a magnetic core around which the coil is wound, thereby achieving electromagnetic induction.
Referring to fig. 3, in an embodiment, the lighting device further includes a rectifying and filtering module 300, the rectifying and filtering module 300 is electrically connected to the electromagnetic induction module 110 and the energy storage module 120, wherein,
the rectifying and filtering module 300 is configured to rectify and filter the electric energy generated by the electromagnetic induction module 110, and then charge the energy storage module 120, so that the energy storage module 120 stores the electric energy and supplies power to the light source 200.
In other words, the alternating current generated by the electromagnetic induction module 110 cannot be transmitted to the energy storage module 120, and can be charged after rectification and filtering.
Referring to fig. 4, in an embodiment, the rectifier filter module 300 includes a rectifier bridge B1, a first capacitor C1, and a second capacitor C2, a 1 st end of the rectifier bridge B1 is connected to one end of the electromagnetic coil L, a 2 nd end of the rectifier bridge B1 is grounded, a 3 rd end of the rectifier bridge B1 is connected to the other end of the electromagnetic coil L, a 4 th end of the rectifier bridge B1 is connected to one end of the first capacitor C1 and one end of the second capacitor C2, and the other end of the first capacitor C1 and the other end of the second capacitor C2 are grounded. The rectifier bridge B1 is a full-bridge rectifier circuit, and is composed of four diodes, and can convert the ac power generated by the electromagnetic induction coil L into dc power, and then the dc power is filtered by the first capacitor C1 and the second capacitor C2, so that stable dc power can be output to the energy storage module 120.
It should be noted that the rectifying and filtering module of the present invention is not limited to the above circuit, and for example, the rectifying and filtering module may be rectified by a half-bridge rectifying circuit or directly rectified by a rectifying diode, and only needs to satisfy the requirements of rectification and filtering.
Referring to fig. 3, in an embodiment, the lighting device further includes a charge and discharge control module 400, the charge and discharge control module 400 is connected between the rectifying and filtering module 300 and the energy storage module 120 and between the energy storage module 120 and the light source 200, and the charge and discharge control module 400 is configured to control charging and discharging of the energy storage module 120.
In this embodiment, a charge and discharge control module 400 is provided to control the charge and discharge processes of the energy storage module 120, so as to prevent the energy storage module 120 from being overcharged or overcharged, when the energy storage module 120 is too long in charge time or overcharged, the connection between the energy storage module 120 and the rectifying and filtering module 300 can be disconnected, so that the energy storage module 120 stops charging, when the energy storage module 120 is too long in discharge time or overdischarged, the connection between the energy storage module 120 and the light source 200 can be disconnected, so that the energy storage module 120 and the light source 200 stop discharging, and in addition, when no magnetic resonance sequence scanning is performed, the connection between the energy storage module 120 and the light source 200 can be disconnected, so that the waste.
Referring to fig. 4, in an embodiment, the charge and discharge control module 400 includes a control chip U1, a first switch K1 and a second switch K2, two signal output ports of the control chip U1 are connected to the first switch K1 and the second switch K2, the first switch K1 is disposed between the rectifying and filtering module 300 and the energy storage module 120, and the second switch K2 is disposed between the energy storage module 120 and the light source 200.
The control chip U1 is configured to control on and off of the first switch K1 and the second switch K2, when charging is required, the control chip U1 sends a signal to the first switch K1 to close the first switch K1, so that the rectifying and filtering module 300 can output direct current to the energy storage module 120 to charge the energy storage module 120, and when charging is required to be disconnected, the control chip U1 controls the first switch K1 to be disconnected to stop charging of the energy storage module 120. When the lighting is needed, the control chip U1 controls the second switch K2 to be closed, so that the energy storage module 120 supplies power to the light source 200, and when the lighting is not needed or the power supply needs to be stopped, the control chip U1 controls the second switch K2 to be opened, so that the energy storage module 120 stops supplying power to the light source 200.
In a preferred embodiment, the control chip U1 may adopt a single chip to realize the control of the switch, and has stable performance and fast processing speed, and of course, in other embodiments, the control chip U1 may also be replaced by other hardware or software capable of realizing the control function, such as an embedded system, and the like, which is not limited in the present invention.
It should be noted that the specific circuit structure of the charge and discharge control module 400 is only a preferred embodiment of the present invention for realizing charge and discharge control, and in other embodiments, other manners may also be adopted to realize charge and discharge control, for example, software is directly used to realize control of the switch, or the switch is replaced by a relay or other elements, and the charge and discharge control structure that only needs to satisfy charge and discharge control can be used in the embodiments of the present invention.
Referring to fig. 3 and fig. 4, in an embodiment, the lighting device further includes an electric quantity detection module 500, the electric quantity detection module 500 is electrically connected to the energy storage module 120 and the charge and discharge control module 400, and the electric quantity detection module 500 is configured to detect the electric energy stored in the energy storage module 120, and send a control signal to the charge and discharge control module 400 when the electric energy stored in the energy storage module 120 exceeds a preset value, so that the charge and discharge control module 400 disconnects the rectifying and filtering module 300 from the energy storage module 120.
In other words, in order to avoid overcharging the energy storage module 120, in the embodiment of the present invention, the electric quantity detection module 500 is arranged to monitor the electric quantity of the energy storage module 120 in real time, so as to ensure the safety of the energy storage module 120. In an embodiment, the power detection module 500 may adopt a power management chip, and the power management chip may directly measure the power stored in the energy storage module 120, and then compare the monitored power with a preset value, and output a control signal to the charge and discharge control module 400, so that the charge and discharge control module 400 controls the on/off of the first switch K1. Of course, in other embodiments, the electric quantity detection module 500 may also adopt other electric energy monitoring manners, for example, after the voltage acquisition circuit acquires the voltage at the two ends of the energy storage module 120, the voltage is converted into the electric quantity through the analog to digital conversion, and the electric quantity is compared by a comparison circuit to output the control signal, so that the charge and discharge control module 400 operates, and only the monitoring structure meeting the electric quantity monitoring can be used in the embodiment of the present invention.
Referring to fig. 3, in an embodiment, the lighting apparatus further includes a voltage stabilizing module 600, the voltage stabilizing module 600 is connected between the energy storage module 120 and the light source 200, and the voltage stabilizing module 600 is configured to convert the electric energy output by the energy storage module 120 into a voltage and then supply the voltage to the light source 200.
In other words, in order to provide a suitable voltage for the light source 200, before the power supply, the embodiment of the present invention further provides a voltage stabilizing module 600 for performing voltage conversion, so as to ensure the stability and safety of the power supply of the light source 200. In a specific embodiment, the voltage regulation module 600 may be directly a voltage regulation chip, and after voltage conversion is performed by the voltage regulation chip, a suitable voltage may be provided for the light source 200, and the voltage regulation chip may convert a 220V power supply into a 12V voltage for output.
In one embodiment, the energy storage module 120 is a storage battery, and the storage battery can conveniently store and release electric energy to ensure charging and power supply requirements, however, in other embodiments, the energy storage module 120 can also adopt other manners, such as charging inductance, etc., and only devices that can store and discharge energy can be used in the embodiments of the present invention.
In one embodiment, the energy storage device 100 is disposed in the scan aperture dark cavity of the magnetic resonance system, so as to effectively avoid wiring from outside the scan aperture of the magnetic resonance system, avoid interference with the magnetic resonance scan, and reduce wiring complexity.
In one embodiment, the light source 200 is disposed in a scan aperture dark chamber of the magnetic resonance system, so as to ensure sufficient illumination of the aperture dark chamber, and effectively relieve the tension of the patient. In a specific embodiment, the light source 200 is an LED lamp, and the light of the LED lamp is soft, so that the tension of the patient can be effectively relieved, and the damage to the vision of the patient can be avoided. Of course, in other embodiments, the light source 200 may also be an OLED lamp, an incandescent lamp, or other lighting devices, and all that is needed is to satisfy the technical requirement of lighting can be used in the embodiments of the present invention.
Based on the above-mentioned illumination device, the present invention further provides a magnetic resonance system, where the magnetic resonance system includes the illumination device according to the above-mentioned embodiments, and the magnetic resonance system is configured to perform magnetic resonance scanning and illuminate the dark cavity in the bore during scanning.
In summary, the lighting device and the magnetic resonance system provided by the invention induce the varied escape field generated by the excitation and encoding of the target by the high-power rf coil and the gradient coil during the magnetic resonance sequence scanning by arranging the energy storage device, generate the electric energy and store the electric energy for the light source to emit light, so that no additional power supply is needed, no additional power consumption is caused, the interference risk generated when an external power supply line is introduced is reduced, and in addition, the complexity of the system cable is reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. A lighting device comprising an energy storage device and a light source, the energy storage device being electrically connected to the light source, wherein,
the energy storage device is used for converting magnetic energy generated during magnetic resonance scanning into electric energy to be stored and supplying power to the light source;
the light source is used for illumination.
2. A lighting device as recited in claim 1, wherein said energy storage device comprises an electromagnetic induction module and an energy storage module, said electromagnetic induction module being electrically connected to said energy storage module, wherein,
the electromagnetic induction module is used for converting magnetic energy generated during magnetic resonance scanning into electric energy;
the energy storage module is used for storing the electric energy generated by the electromagnetic induction module and supplying power to the light source.
3. The illumination device according to claim 2, wherein the electromagnetic induction module comprises at least one electromagnetic induction coil, both ends of the electromagnetic induction coil are electrically connected with the energy storage module, and the electromagnetic induction coil is configured to generate an alternating current after inducing a changing magnetic field generated during the magnetic resonance scanning.
4. The lighting device of claim 2, further comprising a rectifying and filtering module electrically connected to the electromagnetic induction module and the energy storage module, wherein,
the rectification filtering module is used for rectifying and filtering the electric energy generated by the electromagnetic induction module and then charging the energy storage module so that the energy storage module stores the electric energy and supplies power to the light source.
5. The lighting device according to claim 4, further comprising a charge and discharge control module, wherein the charge and discharge control module is connected between the rectifying and filtering module and the energy storage module and between the energy storage module and the light source, and the charge and discharge control module is configured to control charging and discharging of the energy storage module.
6. The lighting device according to claim 5, further comprising an electric quantity detection module, wherein the electric quantity detection module is electrically connected to the energy storage module and the charge and discharge control module, and is configured to detect the electric energy stored in the energy storage module and send a control signal to the charge and discharge control module when the electric energy stored in the energy storage module exceeds a preset value, so that the charge and discharge control module disconnects the rectifying and filtering module from the energy storage module.
7. A lighting device as recited in claim 4, further comprising a voltage regulation module, wherein the voltage regulation module is connected between the energy storage module and the light source, and the voltage regulation module is configured to convert the voltage of the electric energy output by the energy storage module and supply the electric energy to the light source.
8. The illumination device of claim 1 wherein the energy storage device is disposed within a scanning aperture dark chamber of a magnetic resonance system.
9. The illumination device of claim 1, wherein the light source is disposed within a scanning aperture dark chamber of a magnetic resonance system.
10. A magnetic resonance system comprising an illumination device as claimed in any one of claims 1 to 9.
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| CN202011621719.9A CN112714537B (en) | 2020-12-30 | 2020-12-30 | Lighting device and magnetic resonance system |
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| CN112714537B (en) | 2023-04-25 |
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