CN102973234A - Capsule endoscope and detection device thereof - Google Patents
Capsule endoscope and detection device thereof Download PDFInfo
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- CN102973234A CN102973234A CN2012104891311A CN201210489131A CN102973234A CN 102973234 A CN102973234 A CN 102973234A CN 2012104891311 A CN2012104891311 A CN 2012104891311A CN 201210489131 A CN201210489131 A CN 201210489131A CN 102973234 A CN102973234 A CN 102973234A
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Abstract
The invention provides a capsule endoscope and a detection device thereof. The capsule endoscope comprises a magnetic permeability module. The detection device comprises a magnetic field generation circuit and a magnetic field detection circuit, which are connected with each other, wherein the magnetic field generation circuit comprises a detection coil and an oscillating circuit; the oscillating circuit generates current with specific frequency in the coil, so a magnetic field is generated; when the detection device is close to a human body, if the magnetic field detection circuit converges magnetic flux under the action of the magnetic field of the magnetic field generation circuit, the magnetic field detection circuit detects the change of the magnetic flux; and if a detected magnetic flux change value is greater than a preset reference value, the capsule endoscope with the magnetic permeability module is determined to be in the human body. The change of the magnetic flux is formed between the magnetic field generation circuit and the capsule endoscope and detected by the magnetic field detection circuit with a Hall device, magnetic flux values are converted into voltage values, and the detected voltage values are compared to judge whether the capsule endoscope with the magnetic permeability module is in the human body.
Description
Technical field
The present invention relates to capsule endoscope and checkout gear, refer to especially a kind of capsule endoscope with the magnetic conduction module and for detection of its checkout gear.
Background technology
Capsule endoscopic is the High Tech Products of medical development, it day by day is widely used in the medically clinical diagnosis of various diseases, adopt painless AT monitoring, diagnosing, enter after oral in human stomach or the intestinal, by its inner stomach of its lens assembly shooting at close range or intestinal wall situation, to carry out clinical diagnosis, alleviate patient's clinical misery.
But, after capsule endoscope enters in the body, stomach or the intestinal of human body carried out image, and transfers to outside image monitoring equipment.After operation of capsule endoscope is finished, it need to be excreted.Whether and after after a while, the user can't judge sometimes whether it has been excreted, need to detect it by instrument and be detained in vivo.
Therefore, provide a kind of capsule endoscope easy to detect, efficient and checkout gear thereof real in necessary.
Summary of the invention
Based on the deficiencies in the prior art, main purpose of the present invention is to provide a kind of capsule endoscope that can detect by detection of magnetic field and for detection of its checkout gear.
The invention provides a kind of capsule endoscope, comprise capsule housing and be packaged in wherein light source, camera lens, antenna, power supply and governor circuit, camera lens is arranged at the one or both ends of power supply, light source is installed in by the camera lens, antenna jacket is located on the camera lens, governor circuit and power supply are electrically connected with each module respectively, wherein, one side of described power supply is equiped with the magnetic conduction module, described capsule endoscope is centered by axis, wherein the weight of half capsule is greater than the weight of second half capsule, so that capsule keeps vertical when moving in body fluid, camera lens parallels with the traffic direction of capsule.
In the present invention, described magnetic conduction module is annulus or magnet ring, and it is sheathed on the periphery of power supply.Described magnetic conduction module both can be used as counterweight and had added a side of being located at capsule endoscope, made its capsule both sides weight not reciprocity, played the effect that keeps vertical operation in body fluid; The more important thing is, also can consist of certain interference to the magnetic field that checkout gear produces, produce converging of magnetic flux, to judge by the variation of magnetic flux whether it is present in the human body.
The present invention also provides a kind of checkout gear of capsule endoscope, comprise that interconnective magnetic field produces circuit and magnetic field detection circuit, described magnetic field produces circuit and comprises search coil and oscillating circuit, when the close human body of checkout gear,, the magnetic field detection circuit produces converging of magnetic flux if producing in magnetic field under the action of a magnetic field of circuit, the magnetic field detection circuit records the variation of magnetic flux, if the flux change value of surveying, judges then that the capsule endoscope with the magnetic conduction module is present in the human body greater than the preset reference value.
Wherein, in order to detect the flux change because attracting each other and produce before the magnetic conduction module on search coil and the capsule endoscope, described magnetic field detection circuit comprises hall device, A/D change-over circuit and main control chip, the flux value of described hall device record search coil, measured flux value is converted to digital signal through the A/D change-over circuit, transfer in the main control chip and flux value and the preset reference value of surveying compared the output comparison result.By the variation of hall device recording flux, and feed back to main control chip and compare judgement, know testing result.
For precision and the efficient that improves flux detection, described magnetic field detection circuit further comprises amplifying circuit and the peak-detector circuit that is arranged between hall device and the A/D change-over circuit, the flux value of the search coil that hall device records is after amplifying circuit carries out the signal amplification, transfer to the maximum that peak-detector circuit detects magnetic flux, maximum and preset reference value with magnetic flux in main control chip compare, the output comparison result.
Have additional amplifying circuit in described magnetic field generation circuit, described amplifying circuit is arranged between search coil and the oscillating circuit, is used for transferring to oscillating circuit after the flux value amplification with search coil.
Show in several ways testing result, two kinds of display modes are provided among the present invention, one, the mode by reporting to the police: described magnetic field detection circuit further comprises the alarm module that is connected with main control chip, when the variation of magnetic field detection electric circuit inspection to magnetic flux, then feed back to main control chip, send alarm command by main control chip to alarm module.Two, the mode by showing: described magnetic field detection circuit further comprises the display module that is electrically connected with main control chip, when the variation of magnetic field detection electric circuit inspection to magnetic flux, then feeds back to main control chip, sends testing result by main control chip to display module.The tester has detected capsule endoscope existing in human body with caution.
In the present invention, default voltage reference value is 0.1V to VCC(supply voltage in the described magnetic field detection circuit) between.The frequency range of described oscillating circuit is 1KHz-2MHz.
Compared with prior art, increasing in the capsule endoscope of the present invention has the magnetic conduction module, and it plays the effect of counterweight on the one hand, so that the both sides of capsule endoscope consist of the not reciprocity structure of weight, can in body fluid, move with being kept upright, be conducive to take image or the image of predetermined angle; The more important thing is, when the close human body of checkout gear, if there is capsule endoscope in the human body, then produce converging of magnetic flux between the magnetic conduction module on the capsule endoscope and the search coil on the checkout gear, measure capsule endoscope existence in vivo by the change that detects magnetic flux.The present invention also provides a kind of checkout gear that detects capsule endoscope, it produces between circuit and the capsule endoscope by magnetic field and produces flux change, again by detect the variation of magnetic flux with the magnetic field detection circuit of hall device, the flux change value is converted into voltage change, compares by the magnitude of voltage of relatively surveying and judge the capsule endoscope that whether exists in the human body with the magnetic conduction module.The present invention's arranging between checkout gear and capsule endoscope can interactional magnetic field, during to the close human body of checkout gear, both attract each other and the flux change that produces detects analysis, thereby but the high-accuracy high-efficiency rate detect capsule endoscope and whether be present in the body.
Description of drawings
Fig. 1 is the structural representation of capsule endoscope of the present invention;
Fig. 2 is the circuit module block diagram of the checkout gear of capsule endoscope of the present invention;
Fig. 3 is that the checkout gear of capsule endoscope of the present invention is not positioned near the magnetic flux state diagram of capsule endoscope;
Fig. 4 is that the checkout gear of capsule endoscope of the present invention is positioned near the magnetic flux state diagram of capsule endoscope.
The specific embodiment
With reference to shown in Figure 1, the invention provides a kind of capsule endoscope 100, comprise capsule housing 1 and be packaged in wherein light source 2, camera lens 3, antenna 4, power supply 5 and governor circuit 6, camera lens 3 is arranged at the one or both ends of power supply 5, it is other that light source 2 is installed in camera lens 3, antenna 4 is sheathed on the camera lens 3, governor circuit 6 and power supply 5 are electrically connected with each module respectively, one side of described power supply 5 is equiped with magnetic conduction module 7, described capsule endoscope is centered by axis, wherein the weight of half capsule is greater than the weight of second half capsule, so that capsule keeps vertical when moving in body fluid, camera lens parallels with the traffic direction of capsule.
Wherein, described magnetic conduction module 7 is as the counterweight in the capsule endoscope and magnetic field generating member, and described magnetic conduction module is annulus or magnet ring, and it is sheathed on the periphery of power supply.On the one hand, by the sheathed magnetic conduction module 7 of battery one side at capsule endoscope, so that the both sides weight of capsule endoscope is not reciprocity, an end weight that is arranged with magnetic conduction module 7 is larger, and center of gravity and axle center be not in same point, like this, when capsule endoscope moves in body fluid, because center of gravity makes it can keep vertical stand-up state ground operation on the lower side so that the stability height of captured image or image, and easily judge its image of clapping or image approximate location in vivo.On the other hand, the magnetic conduction module is as magnetic field generating member, and when checkout gear is close, the interference in the magnetic field that it produces causes that the capsule endoscope periphery produces converging of magnetic flux, judges by the variation that detects magnetic flux whether capsule endoscope exists in vivo.
Wherein, the weight of described magnetic conduction module 7 is 0.2-1g, has good magnetic property; Coil or the magnet ring of preferred ring-type have good magnetic property, can weight as required carry out counterweight, are sheathed on the periphery of battery, so that counterweigh guarantees that axle center and center of gravity are on same axis.Coil turn is more, and the magnetic field that produces is larger.
For the capsule endoscope with the magnetic conduction module is carried out detecting in the body, a kind of checkout gear 200 of capsule endoscope is provided, it comprises that interconnective magnetic field produces circuit 201 and magnetic field detection circuit 202, described magnetic field produces circuit 201 and comprises search coil 201a and oscillating circuit 201b, when checkout gear 200 close human bodies,, magnetic field detection circuit 202 produces converging of magnetic flux if producing in magnetic field under the action of a magnetic field of circuit, magnetic field detection circuit 202 records the variation of magnetic flux, if the flux change of surveying, judges then that the capsule endoscope 100 with the magnetic conduction module is present in the human body greater than the preset reference value.
In a preferred embodiment of the invention, described magnetic field produces in the circuit 201 and has additional amplifying circuit 201c, described amplifying circuit 201c is arranged between search coil 201a and the oscillating circuit 201b, be used for transferring to oscillating circuit 201b after the flux value amplification with search coil 201a, the effect of oscillating circuit is the electric current that produces characteristic frequency in coil, thereby produces magnetic field.The signal of flux change through amplifying circuit 201c processing and amplifying after, obtain larger magnetic flux signal value, feed back to that the magnetic field detection circuit records and relatively judge.
In the present invention, described magnetic field detection circuit 202 comprises hall device 202a, A/D change-over circuit 202b and main control chip 202c, the flux value of described hall device 202a record search coil 201a, convert the flux change value to voltage change, magnitude of voltage is converted to digital signal through A/D change-over circuit 202b, transfer among the main control chip 202c and flux change value and the preset reference value of surveying compared the output comparison result.The power of hall device monitoring magnetic flux is directly proportional with the magnitude of voltage of exporting, and magnetic flux is stronger, and magnitude of voltage is larger.Shown in Fig. 3-4, with the close human body of checkout gear, if magnetic flux converges near the capsule endoscope, hall device then converts the flux value that records to magnitude of voltage, after the A/D conversion, transfer among the main control chip 202c and compare judgement, if know the flux change value of surveying greater than the preset reference value through comparison, can judge that then the capsule endoscope 100 with the magnetic conduction module is present in the human body.
In another preferred embodiment of the present invention, described magnetic field detection circuit 202 further comprises amplifying circuit 202d and the peak-detector circuit 202e that is arranged between hall device 202a and the A/D change-over circuit 202b, the flux value of the search coil 201a that hall device 202a records is after amplifying circuit 201c carries out the signal amplification, transfer to the maximum that peak-detector circuit 202e detects magnetic flux, maximum and preset reference value with magnetic flux in main control chip 202c compare, the output comparison result.Wherein, the magnitude of voltage that described amplifying circuit 202d is used for after the flux value conversion that hall device 202a records carries out processing and amplifying, to improve the precision of signal fusing; Described peak-detector circuit 202e detects the maximum of voltage, the maximum of voltage is transferred to the A/D modular converter carry out digital-to-analogue conversion, can greatly improve like this efficient of A/D conversion, voltage max is compared with default reference value, can judge whether capsule endoscope is present in the human body.
In another preferred embodiment of the present invention, described magnetic field detection circuit 202 further comprises the alarm module 202f that is connected with main control chip 202c, detect the variation of magnetic flux when magnetic field detection circuit 202, then feed back to main control chip 202c, send alarm command by main control chip 202c to alarm module 202f.By the existence of trigger alarm module 202f prompting capsule endoscope in human body.
In another preferred embodiment of the present invention, described magnetic field detection circuit 202 further comprises the display module 202g that is electrically connected with main control chip 202c, detect the variation of magnetic flux when magnetic field detection circuit 202, then feed back to main control chip 202c, send testing result by main control chip 202c to display module 202g, similarly, point out the existence of capsule endoscope in human body by the mode of display module 202g startup display lamp or demonstration testing result.
In the present invention, described magnetic field detection circuit 202 also further comprises the power supply circuits 202h that is electrically connected with main control chip 202c.
Wherein, default voltage reference value is 0.1V to VCC(supply voltage in the described magnetic field detection circuit) between.The frequency range of described oscillating circuit is 1KHz-2MHz, and in this frequency range, human body is very little on the obstruct impact of magnetic flux.
During detection, with the close human abdomen of checkout gear, the search coil that magnetic field produces circuit produces magnetic field, if the hall device of magnetic field detection circuit detects the variation of magnetic flux, then its flux value is converted to magnitude of voltage, through with preset reference value compare of analysis after, if voltage change is greater than the preset reference value, can judge that then the capsule endoscope with the magnetic conduction module also is stranded in the body, obtain testing result, and point out by the mode of reporting to the police or show.Like this, strafe through simple abdominal part, can judge rapidly the delay that whether has capsule endoscope, mode of operation is simple, and is workable.
Claims (10)
1. capsule endoscope, comprise capsule housing and be packaged in wherein light source, camera lens, antenna, power supply and governor circuit, camera lens is arranged at the one or both ends of power supply, light source is installed in by the camera lens, antenna jacket is located on the camera lens, governor circuit and power supply are electrically connected with each module respectively, it is characterized in that: be equiped with the magnetic conduction module in the described capsule endoscope.
2. capsule endoscope according to claim 1, it is characterized in that: described magnetic conduction module is installed in a side of power supply, described capsule endoscope is centered by axis, wherein the weight of half capsule is greater than the weight of second half capsule, so that capsule keeps when moving in body fluid is vertical, camera lens parallels with the traffic direction of capsule.
3. for detection of the checkout gear of a kind of capsule endoscope as claimed in claim 1, it is characterized in that: comprise that interconnective magnetic field produces circuit and magnetic field detection circuit, described magnetic field produces circuit and comprises search coil and oscillating circuit, oscillating circuit produces the electric current of characteristic frequency in coil, thereby generation magnetic field, when the close human body of checkout gear,, the magnetic field detection circuit produces converging of magnetic flux if producing in magnetic field under the action of a magnetic field of circuit, the magnetic field detection circuit records the variation of magnetic flux, if the flux change value of surveying, judges then that the capsule endoscope with the magnetic conduction module is present in the human body greater than the preset reference value.
4. the checkout gear of a kind of capsule endoscope according to claim 3, it is characterized in that: described magnetic field detection circuit comprises hall device, A/D change-over circuit and main control chip, the flux value of described hall device record search coil, after changing into magnitude of voltage, measured flux value is converted to digital signal through the A/D change-over circuit, transfer in the main control chip and flux value and the preset reference value of surveying compared the output comparison result.
5. the checkout gear of a kind of capsule endoscope according to claim 4 is characterized in that: voltage reference value default in the described magnetic field detection circuit is that 0.1V is between the supply voltage (VCC).
6. the checkout gear of a kind of capsule endoscope according to claim 5, it is characterized in that: the frequency range of described oscillating circuit is 1KHz-2MHz.
7. the checkout gear of a kind of capsule endoscope according to claim 4, it is characterized in that: described magnetic field detection circuit further comprises amplifying circuit and the peak-detector circuit that is arranged between hall device and the A/D change-over circuit, the flux value of the search coil that hall device records is after amplifying circuit carries out the signal amplification, transfer to the maximum that peak-detector circuit detects magnetic flux, maximum and preset reference value with magnetic flux in main control chip compare, the output comparison result.
8. the checkout gear of a kind of capsule endoscope according to claim 7, it is characterized in that: produce in the circuit in described magnetic field and have additional amplifying circuit, described amplifying circuit is arranged between search coil and the oscillating circuit, is used for transferring to oscillating circuit after the flux value amplification with search coil.
9. the checkout gear of each described a kind of capsule endoscope according to claim 3-8, it is characterized in that: described magnetic field detection circuit further comprises the alarm module that is connected with main control chip, when the variation of magnetic field detection electric circuit inspection to magnetic flux, then feed back to main control chip, send alarm command by main control chip to alarm module.
10. the checkout gear of each described a kind of capsule endoscope according to claim 3-8, it is characterized in that: described magnetic field detection circuit further comprises the display module that is electrically connected with main control chip, when the variation of magnetic field detection electric circuit inspection to magnetic flux, then feed back to main control chip, send testing result by main control chip to display module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210489131.1A CN102973234B (en) | 2012-11-27 | 2012-11-27 | Detection device of capsule endoscope |
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| CN201210489131.1A CN102973234B (en) | 2012-11-27 | 2012-11-27 | Detection device of capsule endoscope |
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| CN102973234B CN102973234B (en) | 2015-07-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014071821A1 (en) * | 2012-11-07 | 2014-05-15 | 深圳市资福技术有限公司 | Capsule endoscope |
| WO2014071822A1 (en) * | 2012-11-07 | 2014-05-15 | 深圳市资福技术有限公司 | Capsule endoscope |
| CN107981830A (en) * | 2017-12-12 | 2018-05-04 | 重庆财玺科技有限公司 | A kind of capsule endoscope detector |
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| CN107981830A (en) * | 2017-12-12 | 2018-05-04 | 重庆财玺科技有限公司 | A kind of capsule endoscope detector |
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| CN102973234B (en) | 2015-07-08 |
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Address after: 518120, Fourth Industrial Zone 6, new community, Dapeng street, Longgang District, Guangdong, Shenzhen Patentee after: Shenzhen fufu Medical Technology Co., Ltd. Address before: 518120, Fourth Industrial Zone 6, new community, Dapeng street, Longgang District, Guangdong, Shenzhen Patentee before: Shenzhen Zifu Technology Co., Ltd. |