CN111816987A - Image transmission system and method and capsule endoscope thereof - Google Patents
Image transmission system and method and capsule endoscope thereof Download PDFInfo
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- CN111816987A CN111816987A CN202010801358.XA CN202010801358A CN111816987A CN 111816987 A CN111816987 A CN 111816987A CN 202010801358 A CN202010801358 A CN 202010801358A CN 111816987 A CN111816987 A CN 111816987A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/273—Adaptation for carrying or wearing by persons or animals
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00004—Operational features of endoscopes characterised by electronic signal processing
- A61B1/00009—Operational features of endoscopes characterised by electronic signal processing of image signals during a use of endoscope
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00011—Operational features of endoscopes characterised by signal transmission
- A61B1/00016—Operational features of endoscopes characterised by signal transmission using wireless means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/041—Capsule endoscopes for imaging
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Public Health (AREA)
- Radiology & Medical Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Endoscopes (AREA)
Abstract
The invention discloses an image transmission system, an image transmission method and a capsule endoscope thereof. The method comprises the steps of firstly, counting image transmission frame rates and signal intensity values of the capsule endoscope, judging the frame rates and frame rate preset values, and if the frame rates are larger than or equal to the frame rate preset values, continuing to transmit images in the current frequency band; otherwise, further judging the signal intensity value of the capsule endoscope, and reducing the working frequency band of the capsule endoscope and transmitting an image if the signal intensity value is smaller than the preset value of the signal intensity; otherwise, switching the working frequency band of the capsule endoscope and transmitting the image. The image transmission method can flexibly adjust the frequency range according to the signal and the stability in the image transmission process, has higher signal transmission freedom and stability, and simultaneously reduces the number of antennas in different frequency ranges and the occupied space of the antennas.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to an image transmission system and method of a multi-band antenna and a capsule endoscope thereof.
Background
Capsule endoscope obtains rapid development as neotype alimentary canal physical examination scheme in recent years, and it has the incomparable advantage of traditional intubation type gastroscope, and it adopts wireless transmission's mode to transmit image to external image storage equipment, has avoided traditional gastroscope operation complicacy, and professional strong, and the very big drawback of the person of being examined uncomfortable sensation, and capsule endoscope is replacing traditional intubation type intestines gastroscope gradually. The common capsule endoscope transmission image adopts a single-band antenna, which can only satisfy single-band signal transmission, and the system can not normally communicate when the system needs multi-band transmission, so that a capsule endoscope transmission mechanism capable of adopting multi-band communication is necessary to be developed.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an image transmission system, an image transmission method and a capsule endoscope thereof, and the technical scheme of the invention is as follows:
in a first aspect, the invention provides an image transmission system, which comprises a capsule endoscope and an image memory, wherein the capsule endoscope further comprises a multi-band antenna, and the multi-band antenna is provided with a plurality of feed-in points for respectively transmitting signals of a plurality of frequency bands.
Further, the multiband antenna is further provided with at least one feeder.
Furthermore, the number of the feed-in points is at least one.
Further, the capsule endoscope further comprises an image acquisition module, and the image acquisition module is used for acquiring images in the body cavity.
Further, the capsule endoscope further comprises a radio frequency image transmission module and/or a radio frequency switch.
In a second aspect, the present invention provides an image transmission method, comprising the steps of:
the external transceiving equipment counts the image transmission frame rate and the signal intensity value of the capsule endoscope;
judging whether the frame rate is greater than a preset value;
if the frame rate is greater than or equal to the frame rate preset value, continuing to transmit the image in the current frequency band;
if the frame rate is less than the frame rate preset value, the signal intensity value of the capsule endoscope is further judged,
if the signal intensity value is smaller than the signal intensity preset value, the external transceiving equipment sends a command to reduce the working frequency band of the capsule endoscope and transmits an image;
and if the signal intensity value is greater than or equal to the signal intensity preset value, the external transceiving equipment sends a command to switch the working frequency band of the capsule endoscope and transmit images.
Further, the multiband antenna is further provided with at least one feeder line and at least one feed-in point.
Further, the capsule endoscope further comprises an image acquisition module, and the image acquisition module is used for acquiring images in the body cavity.
Further, the capsule endoscope further comprises a radio frequency image transmission module and/or a radio frequency switch.
In a third aspect, the present invention provides a capsule endoscope, wherein the capsule endoscope transmits data by using a multi-band antenna, and the multi-band antenna is provided with a plurality of feed points for respectively transmitting signals of a plurality of frequency bands.
By adopting the image transmission system and method and the capsule endoscope thereof, the frequency band of image transmission can be flexibly adjusted according to the signal and the stability in the image transmission process, the signal transmission freedom degree and the stability are higher, and the number of antennas in different frequency bands and the occupied space of the antennas are reduced.
Drawings
FIG. 1: the invention relates to a multi-band image transmission system.
FIG. 2: the invention discloses a working flow diagram of a multi-band image transmission system.
FIG. 3: the antenna of the first embodiment of the present invention is schematically illustrated in front view.
FIG. 4: the antenna shape of the first embodiment of the present invention is illustrated on the backside.
FIG. 5: the antenna connection of the first embodiment of the present invention is illustrated.
FIG. 6: the antenna of the second embodiment of the present invention is schematically illustrated.
FIG. 7: the antenna connection of the second embodiment of the present invention is illustrated.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the multi-band image transmission system of the present invention is composed of a multi-band antenna 102, a radio frequency mapping module 103 and an image acquisition module 104, wherein the multi-band antenna 102 can operate in different frequency bands, such as 13.56MHz, 433MHz, 2.4GHz, etc., the image acquisition module 104 converts the photographed image into image data, and transmits the image data to the radio frequency mapping module 103, and then selects an appropriate frequency band to transmit the image data or parameter information to an image memory outside the body through the multi-band antenna 102, the difference of data amount when the capsule endoscope transmits the image data or parameter information is large, the capsule parameter information is usually transmitted in a low frequency band, the image data is transmitted in a medium-high frequency band, and when the noise signal in the external environment interferes the image transmission of the capsule endoscope greatly, the interference frequency band can be avoided by switching the appropriate frequency band.
Referring to fig. 2, a schematic diagram of a working flow of the multiband image transmission system according to the present invention is shown, in step 201, an external transceiver device counts an image transmission frame rate and a signal strength value of a capsule endoscope;
if the frame rate is greater than or equal to the frame rate preset value, step 203 continues to transmit the image in the current frequency band;
if the frame rate is judged to be less than the frame rate preset value, step 204 is used for further judging the signal intensity value of the capsule endoscope;
if the signal intensity value is smaller than the signal intensity preset value, in step 206, an external transceiver sends a command to reduce the working frequency band of the capsule endoscope and transmits an image;
if the signal intensity value is greater than or equal to the signal intensity preset value, in step 205, the external transceiver sends a command to switch the working frequency band of the capsule endoscope and transmit an image.
Referring to fig. 3, a schematic diagram of a front surface of an antenna shape according to a first embodiment of the present invention and fig. 4, a schematic diagram of a back surface of an antenna shape according to a first embodiment of the present invention, where the loop antenna is provided with a first feed point 301, a second feed point 302, and a third feed point 303, and the back surface is respectively provided with a first feeder 401, a second feeder 402, and a third feeder 403, where a loop antenna structure of differential feed is formed between the first feed point 301 and the second feed point 302, between the first feed point 301 and the third feed point 303, and between the second feed point 302 and the third feed point 303, respectively, equivalent to that 3 loop antennas are stacked together, and a transmission antenna is selected by switching an antenna switch, and in practical applications, one of the loop antennas may be a ground line, and a suitable feeder line is selected by the antenna switch to perform single-ended signal feed. In the first embodiment, the feeding points on different loop numbers are added in the same loop antenna, the working frequency bands of the antenna are correspondingly added, and the positions of the feeding points are determined according to the required frequency bands, which is not limited in the present invention. Further, the helical structure of the antenna of the first embodiment is not limited to a rectangular shape, but may be an oval, a circular shape, or an irregular shape.
Referring to fig. 5, an antenna connection diagram according to a first embodiment of the present invention is shown, in which each frequency band of the multiband antenna 102 is provided with a corresponding feed-in point connected to the rf switch 501, and the connection between each frequency band feed-in point of the antenna and the image acquisition module 104 is controlled by turning on and off the rf switch 501. Since the loop antenna of the first embodiment is provided with a plurality of feeders, and each band antenna has a certain isolation from other loops through the rf switch 501, the antenna transmission efficiency is higher than that of a broadband multi-branch antenna.
Referring to fig. 6, a schematic diagram of an antenna shape according to a second embodiment of the present invention is shown, in which a feeder 601 is disposed, and an intermediate-frequency spiral branch 602, a high-frequency spiral branch 603, and a low-frequency spiral branch 604 are disposed on the same FPCB board and share the feeder 601, and further referring to fig. 7, an antenna connection diagram according to a second embodiment of the present invention is shown, in which a plurality of frequency bands share a feed line, and the antenna can be directly connected to the radio frequency mapping module 103, so that a hardware design of a radio frequency switch is saved, a hardware circuit is simplified, a design cost is reduced, and a size of a PCBA is reduced.
By adopting the image transmission system and method and the capsule endoscope thereof, the frequency band of image transmission can be flexibly adjusted according to the signal stability in the image transmission process, the signal transmission freedom and stability are higher, and the number of antennas in different frequency bands and the occupied space of the antennas are reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An image transmission system comprises a capsule endoscope and an external transceiving device, and is characterized in that the capsule endoscope further comprises a multi-band antenna, and the multi-band antenna is provided with a plurality of feed-in points for respectively transmitting signals of a plurality of frequency bands.
2. The image transmission system according to claim 1, wherein said multiband antenna is further provided with at least one feeder.
3. The image transmission system according to claim 1, wherein the feeding point is at least one.
4. The image delivery system of claim 1, wherein the capsule endoscope further comprises an image acquisition module for acquiring images within the body lumen.
5. The image transmission system according to claim 1, wherein the capsule endoscope further comprises a radio frequency mapping module and/or a radio frequency switch.
6. An image transmission method, comprising the steps of:
the external transceiving equipment counts the image transmission frame rate and the signal intensity value of the capsule endoscope;
judging whether the frame rate is greater than a preset value;
if the frame rate is greater than or equal to the frame rate preset value, continuing to transmit the image in the current frequency band;
if the frame rate is less than the frame rate preset value, the signal intensity value of the capsule endoscope is further judged,
if the signal intensity value is smaller than the signal intensity preset value, the external transceiving equipment sends a command to reduce the working frequency band of the capsule endoscope and transmits an image;
and if the signal intensity value is greater than the signal intensity preset value, the external transceiving equipment sends a command to switch the working frequency band of the capsule endoscope and transmit images.
7. The image transmission method of claim 6, wherein the multiband antenna further comprises at least one feeder and at least one feed point.
8. The image transmission method according to claim 6, wherein the capsule endoscope further comprises an image acquisition module for acquiring images within the body cavity.
9. The image transmission method according to claim 6, wherein the capsule endoscope further comprises a radio frequency mapping module and/or a radio frequency switch.
10. The capsule endoscope is characterized in that the capsule endoscope adopts a multi-band antenna to transmit data, and the multi-band antenna is provided with a plurality of feed-in points to transmit signals of a plurality of frequency bands respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010801358.XA CN111816987B (en) | 2020-08-11 | 2020-08-11 | Image transmission method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010801358.XA CN111816987B (en) | 2020-08-11 | 2020-08-11 | Image transmission method |
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| CN111816987A true CN111816987A (en) | 2020-10-23 |
| CN111816987B CN111816987B (en) | 2022-01-11 |
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