CN104330146A - Hydrophone positioning method based on medical ultrasonic measurement - Google Patents
Hydrophone positioning method based on medical ultrasonic measurement Download PDFInfo
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- CN104330146A CN104330146A CN201410563247.4A CN201410563247A CN104330146A CN 104330146 A CN104330146 A CN 104330146A CN 201410563247 A CN201410563247 A CN 201410563247A CN 104330146 A CN104330146 A CN 104330146A
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- 238000005259 measurement Methods 0.000 title abstract description 10
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- 230000000630 rising effect Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 20
- 238000009434 installation Methods 0.000 description 11
- 239000007788 liquid Substances 0.000 description 10
- 238000001514 detection method Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
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- 230000004071 biological effect Effects 0.000 description 2
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- 238000002955 isolation Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 229920002457 flexible plastic Polymers 0.000 description 1
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- 239000003208 petroleum Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The invention discloses a hydrophone positioning method based on medical ultrasonic measurement. The method comprises steps: the hydrophone is mounted; the free end of a positioning rod points to the circle center of an arc-shaped supporting arm in the first step; initial positioning is carried out; and primary focusing, shooting and distance measuring are carried out. The positioning rod is rotated to enable a camera and the hydrophone to be coaxial; the camera enables the sensitive surface at the top end of the hydrophone to be automatically focused and shoots a picture, and the shot picture is sent to a PLC; and image processing software of a scale is arranged inside the PLC can automatically calculate the distance value between the sensitive surface at the top end of the hydrophone and the free end of the positioning rod. Steps of secondary positioning, secondary focusing, shooting, distance comparison and third positioning are also provided. By adopting the above method, the hydrophone can be accurately and quickly positioned, reliability is high, demands on an operator are low, the labor intensity is low, and the cost is low.
Description
Technical field
The present invention relates to detection method ultrasonic in a kind of medical supersonic equipment, particularly a kind of nautical receiving set localization method measured based on medical supersonic.
Background technology
Nautical receiving set, also known as underwater microphone, is transducer underwater signal being converted to electric signal.It utilizes properties of materials and it and surrounding environment to interact all mudulation effects produced, the instrument of the signal such as pressure, sound in detecting liquid.At civil area, nautical receiving set can carry out petroleum prospecting, sea life monitoring, seabed investigation etc. by detecting underwater sound signal.In military field, nautical receiving set as sonar system foremost, carries the effect of detection unfriendly target signal.
As everyone knows, medical ultrasound is the application of ultrasonics in medical treatment.Ultrasonic clear picture has become the main body of conflict with biological effect, should ensure safety, reaches clear picture again and has become the main body of conflict with biological effect.In order to the use ultrasonic device that ensures safety, propose in industry medical supersonic equipment use the problem of ultrasonic secure threshold.For this reason, must evaluate the sound parameter of medical supersonic equipment, guarantee the security in clinical practice.
Along with the popularization and application of ultrasonic technique, ultrasonic power measuring technique also seems more important.Ultrasonic power can not only rely on theory calculate to obtain, and application project method must carry out Accurate Measurement.Quality control can be carried out to ultrasonic equipment better like this, help application personnel fully to understand hyperacoustic sound-filed simulation simultaneously.Along with the technical development of concentration ultrasonic, HIFU is increasing for clinical treatment acoustical power, though traditional clamp of sensor takes avoidance measure, still can not meet the requirement of measurement.
Along with a large amount of uses of HIFU technology, the measurement water tank of most of medical supersonic equipment all will adopt sound absorption measure, therefore all needs to use nautical receiving set to detect the ultrasonic of water tank.Before ultrasonic measurement, the installation accuracy to nautical receiving set (being also the sensitive area precision of nautical receiving set) is all needed to position, as being first fixed on measurement water tank by nautical receiving set, then at the added measuring microscope of water tank by nautical receiving set fixture.Then, need two people to coordinate simultaneously and just can work, as needed data or the image of people viewing microscope display in microscope, another people then climbs and adjusts the position of nautical receiving set on water tank, makes the installation accuracy of nautical receiving set meet the requirement of regulation.
No. 201010033966.7 Chinese invention patent disclosed in 25 days Augusts in 2010, its denomination of invention is " a kind of hydrophone testing device ", it comprises: basis, vibration isolation table, the shaking table be installed in vibration isolation table, for generation of vibration signal, is installed on liquid column cylinder above shaking table.As the container of test, be installed on the gland bonnet in liquid column cylinder, for sealing liquid column cylinder; Vacuum pump, produces vacuum state for making liquid column cylinder inside; High-pressure pump, produces high pressure conditions for making liquid column cylinder inside; Be installed on basis, and with the pipeline of liquid column cylinder, vacuum pump, high-pressure pump UNICOM, for controlling the pressure state of liquid column cylinder inside; Be installed on the nautical receiving set fixture of pipe end, for clamping nautical receiving set to be measured; Be installed on the standard hydrophone on nautical receiving set fixture, for measuring acoustic pressure; First valve, for controlling UNICOM's state of vacuum pump and pipeline; And second valve, for controlling UNICOM's state of high-pressure pump and pipeline.Above-mentioned proving installation, solves the problem that existing hydrophone testing device cannot carry out Hi-pot test and background noise test.
No. 201110121836.3 Chinese invention patent disclosed in 14 days Dec in 2011, the name of its innovation and creation is called " directivity test device for hydrophone ", and it comprises the shaking table be installed on lower basis, for generation of vibration signal; Be installed on the liquid column cylinder above shaking table, as the container of test; Be installed on the runing rest on basis, for clamping and rotating nautical receiving set to be measured; Wherein, the inner ring that described runing rest comprises support bar, is installed on the outer shroud of support bar end, is installed on outer shroud inside, the rubber band being placed on the belt of inner ring outside, being arranged on the motor on support bar and being installed in inner ring.
Above-mentioned proving installation, can use shaking table and liquid column cylinder, is realized the test of hydrophone directivity by motor.The important technological problems that this is the testing cost of reduction nautical receiving set, the research field of popularization nautical receiving set must solve.Solve the problem that in hydrophone directivity test, volume is large, with high costs, error is larger.
Above-mentioned proving installation, gives a kind of mode that nautical receiving set is fixing.But the above-mentioned nautical receiving set fixture fixing for nautical receiving set (also i.e. runing rest), from sound field close to, easily produces interference, if it is ultrasonic to be used for detection, test result will be made not accurate enough, and fiduciary level is not high.In addition, the fixed form of rubber band, fixing firm not; Also have the reason that important, the location of the sensitive area of nautical receiving set is not mentioned.
Because the installation accuracy of nautical receiving set is most important to measurement, the installation accuracy of general nautical receiving set requires within 1 millimeter, this installation accuracy of 1 millimeter, general needs are installed location, secondary installing location for the first time, install location for three times or are repeatedly installed location, find, and could substantially reach required requirement.
At present, the installation location of existing nautical receiving set, also exists following deficiency:
1. the first installation location of nautical receiving set needs the experience or the operative skill that rely on operative technique personnel completely; high to the requirement of operative technique personnel; poor controllability; often there will be the phenomenon that first location is too large with desired value gap; thus cause location number of times increase is installed, or can't find the phenomenon of desired value.
2., when microscope carries out secondary installing location to nautical receiving set or repeatedly installs location, need two people to coordinate simultaneously and just can work.This locator meams, also also exists following deficiency:
A. the process of nautical receiving set sensitive area found by microscope, operates very loaded down with trivial details, needs repeatedly constantly to adjust, and labour intensity is large, and positioning time is long, and work efficiency is low.
B. microscope can not pictures taken immediately, for the fluctuation range of nautical receiving set sensitive area whether at specialized range (within 1 millimeter), also can only rely on that operating personnel are visual to be judged, degree of accuracy and poor reliability.
C. human cost is high, and the installation positioning precision of nautical receiving set is not high, and cause the degree of accuracy of final ultrasonic tesint low, the fiduciary level of test result is low, and the value of data is not high.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, and a kind of nautical receiving set localization method measured based on medical supersonic is provided, this localization method makes nautical receiving set accurate positioning, fast, reliability is high, low to operative technique personnel requirement, labour intensity is low and cost is low.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
Based on the nautical receiving set localization method that medical supersonic is measured, comprise the following steps:
The first step, nautical receiving set is installed; The bottom of nautical receiving set is inserted in the nautical receiving set holder that can be elevated, makes the sensitive area on nautical receiving set top vertically upward; Described nautical receiving set holder be slidably arranged in there is concavity circular arc type sway brace nautical receiving set fixture on.
Second step, backstay free end points to the center of circle of concavity circular arc type sway brace in the first step; A backstay that can rotate is set above concavity circular arc type sway brace, when backstay rotates to time vertically downward, one end of backstay is fixedly installed a camera be connected with PLC, and the free end of backstay overlaps with the center of circle of concavity circular arc type sway brace in the first step.
3rd step, just locates: slip nautical receiving set holder, makes nautical receiving set holder, nautical receiving set coaxial with backstay; Then, the height of nautical receiving set holder rises, when proximity switch detect the sensitive area on nautical receiving set top and backstay free end close to time, nautical receiving set holder stops rising, has just located.
4th step, once focuses, takes pictures and range determination: rotated by backstay, make camera coaxial with nautical receiving set; Camera by the sensitive area auto-focusing on nautical receiving set top, take pictures, then send the picture that this is clapped to PLC; Then, be built-in with the image processing software of scale in PLC, automatically can calculate sensitive area and the backstay free end distance value between the two on nautical receiving set top.
5th step, secondary is located: the distance value data in the 4th step is passed to nautical receiving set holder by PLC, and nautical receiving set holder continues to rise, and nautical receiving set holder lifting height is equal with the distance value that PLC provides.
Also comprise the 6th step, three location: described concavity circular arc type sway brace can swing; By the swing of concavity circular arc type sway brace, camera according to setpoint frequency to the sensitive area auto-focusing on nautical receiving set top, take pictures, each picture then this clapped and shooting time send PLC to; Then, be built-in with the image processing software of scale in PLC, automatically can calculate the fluctuation range of the position of the sensitive area on nautical receiving set top in each picture or the sensitive area on size and nautical receiving set top; Meanwhile, the fluctuation range of calculated fluctuation range and setting can compare and judgement by PLC.
The described fluctuation range set is as being less than or equal to 1mm.
Between described 5th step and the 6th step, be also provided with secondary focusing, take pictures and distance comparison step, after secondary has been located, camera by the sensitive area on nautical receiving set top again auto-focusing, take pictures; Image processing software, will calculate sensitive area and the backstay free end distance value between the two on nautical receiving set top, again until this distance value is less than or equal to 1mm.
The angle of described concavity circular arc type sway brace swing is ± 60 °.
After the present invention adopts said method, there is following beneficial effect:
1. above-mentioned backstay free end can point to the center of circle of concavity circular arc type sway brace in the first step, thus backstay can carry out just location to the sensitive area on nautical receiving set fixture top.
2. nautical receiving set fixture has concavity circular arc type sway brace, therefore it can be made former in sound field center, the generation avoided interference, thus when Ultrasonic Detection, test result can be made more accurate, and the fiduciary level of test data is high.
3. the image processing software with scale that above-mentioned camera, PLC and PLC are built-in, can auto-focusing, take pictures, thus simple to operate, do not need personnel repeatedly constantly to adjust operation, labour intensity is little, low to the technical requirement degree of operating personnel, positioning time is short, and work efficiency is high.
4. the image processing software with scale that above-mentioned camera, PLC and PLC are built-in can also automatically calculate the sensitive area on nautical receiving set top and backstay free end distance value between the two, nautical receiving set top sensitive area fluctuation range and judge fluctuation range fast whether in setting range, the drawback that the personnel that avoid are visual, test data accuracy is high, and reliability is strong.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of nautical receiving set locating device based on medical supersonic measurement of the present invention;
Fig. 2 be backstay upset after, backstay vertically downward time structural representation.
Wherein have: 1. base; 2. support; 3. cross bar; 4. backstay; 5. nautical receiving set fixture; 6. the center of circle; 7. camera; 8. proximity switch; 9. nautical receiving set holder; 10. nautical receiving set; 11. motors; 12. rotating shafts.
Embodiment
Below in conjunction with accompanying drawing and concrete better embodiment, the present invention is further detailed explanation.
As depicted in figs. 1 and 2, a kind of nautical receiving set locating device measured based on medical supersonic, the support 2 comprising base 1 and be fixedly installed on base 1.
The top of above-mentioned support 2 is provided with the cross bar 3 of an energy 180 ° upset, and the plan vertical of this cross bar 3 is provided with a backstay 4, and the top of backstay 4 is provided with the proximity switch 8 be connected with PLC.The bottom of cross bar 3 is provided with one and is connected and the self-focusing camera 7 of energy with PLC.
The middle part of support 2 is connected with the nautical receiving set fixture 5 of a concavity circular arc type sway brace by rotating shaft 12.The bottom of nautical receiving set fixture 5 slidably connects a nautical receiving set holder 9.Bottom as nautical receiving set fixture 5 is provided with the arc groove with nautical receiving set fixture 5 concentric, slides in nautical receiving set holder 9 along arc groove.
Above-mentioned nautical receiving set fixture 5 is designed to concavity circular arc, therefore it can be made former in sound field center, the generation avoided interference, thus when Ultrasonic Detection, test result can be made more accurate, and the fiduciary level of test data is high.
The height of above-mentioned nautical receiving set holder 9 can be elevated, and nautical receiving set holder 9 is also provided with the displacement transducer be connected with PLC, and this displacement transducer can be monitored the adjustable height value of nautical receiving set holder 9.
Above-mentioned camera 7 is coaxially arranged with backstay 4, and the center of circle of nautical receiving set fixture 5 is positioned on the axis of backstay 4; The height of backstay 4 is equal to the vertical range of cross bar 3 with the center of circle of nautical receiving set fixture 5.Therefore cross bar 3 is after carrying out 180 ° of upsets, the backstay 4 be positioned on cross bar 3 will vertically downward, the free end of backstay 4 overlaps with the center of circle of the nautical receiving set fixture 5 of concavity circular arc type sway brace, thus backstay 4 can carry out just location to the sensitive area on nautical receiving set fixture 5 top.
Described PLC is built-in with image recognition and image processing software, and is provided with scale in image recognition and image processing software.Therefore can automatically calculate the sensitive area on nautical receiving set 10 top and backstay 4 free end distance value between the two, nautical receiving set 10 top sensitive area fluctuation range and judge fluctuation range fast whether in setting range, the drawback that the personnel that avoid are visual, test data accuracy is high, and reliability is strong.
Described nautical receiving set fixture 5 can swing, and pendulum angle scope is ± 60 °.Therefore Measurement accuracy can be carried out to the fluctuation range of nautical receiving set 10 top sensitive area.
Be provided with at least one motor 11 in described support 2, be preferably 3, each motor 11 all can rotate forward and reverse, and is respectively used to the lifting of the control rotation of rotating shaft 12, the upset of cross bar 3 and nautical receiving set holder 9.
Described nautical receiving set holder 9 inwall is evenly provided with several for by elastic clipping strip fixing for nautical receiving set 10, and each elastic clipping strip is all connected with nautical receiving set holder 9 inside by spring, and elastic clipping strip is flexible plastic material or wood materials.Thus, nautical receiving set 10 can be made fixing more firm.
Based on the nautical receiving set localization method that medical supersonic is measured, comprise the following steps:
The first step, nautical receiving set 10 is installed; The bottom of nautical receiving set 10 is inserted in the nautical receiving set holder 9 that can be elevated, makes the sensitive area on nautical receiving set 10 top vertically upward.Nautical receiving set holder 9 can carry out automatic lifting by motor, can arrange the displacement transducer being elevated displacement for detecting nautical receiving set holder 9 simultaneously.Nautical receiving set holder 9 be slidably arranged in there is concavity circular arc type sway brace nautical receiving set fixture 5 on.The concavity circular arc type sway brace of nautical receiving set fixture 5 is arranged, the enable nautical receiving set fixture 5 that makes away from sound field center, the generation avoided interference, thus when Ultrasonic Detection, test result can be made more accurate, and the fiduciary level of test data is high.
Second step, backstay 4 free end points to the center of circle of concavity circular arc type sway brace in the first step; Above concavity circular arc type sway brace nautical receiving set fixture 5, a backstay that can rotate 4 is set, when backstay 4 rotates to time vertically downward, one end of backstay 4 is fixedly installed a camera be connected with PLC 7, and the free end of backstay 4 overlaps with the center of circle of concavity circular arc type sway brace in the first step.
3rd step, just locates: slip nautical receiving set holder 9, makes nautical receiving set holder 9, nautical receiving set 10 coaxial with backstay 4.Then, the height of nautical receiving set holder 9 rises, when proximity switch 8 detect the sensitive area on nautical receiving set 10 top and backstay 4 free end close to time, nautical receiving set holder 9 stops rising, has just located.Here, proximity switch 8 also can detect the sensitive area on nautical receiving set 10 top and the distance of backstay 4 free end, and the distance value of this detection is supplied to PLC, and when locating for secondary, the adjustable height of nautical receiving set holder 9 as a reference.
4th step, once focuses, takes pictures and range determination: rotated by backstay 4, makes camera 7 coaxial with nautical receiving set 10; Camera 7 by the sensitive area auto-focusing on nautical receiving set 10 top, take pictures, then send the picture that this is clapped to PLC; Then, be built-in with the image processing software of scale in PLC, automatically can calculate sensitive area and the backstay 4 free end distance value between the two on nautical receiving set 10 top.
The image processing software with scale that above-mentioned camera, PLC and PLC are built-in, can auto-focusing, take pictures, thus simple to operate, do not need personnel repeatedly constantly to adjust operation, labour intensity is little, low to the technical requirement degree of operating personnel, positioning time is short, and work efficiency is high.
5th step, secondary is located: the distance value data in the 4th step is passed to nautical receiving set holder 9 by PLC, nautical receiving set holder 9 continues to rise, nautical receiving set holder 9 lifting height is equal with the distance value that PLC provides also can be equal with the distance value that proximity switch 8 provides, and selects according to actual needs.
6th step, secondary focusing, take pictures and distance comparison: after secondary has been located, camera 7 by the sensitive area on nautical receiving set 10 top again auto-focusing, take pictures; Image processing software, will calculate sensitive area and the backstay 4 free end distance value between the two on nautical receiving set 10 top again.When the distance value detected is greater than the requirement of the 1mm of setting, according to the difference with setting value, by to nautical receiving set holder 9 adjustable height or nautical receiving set 10, slide displacement on concavity circular arc type sway brace regulates targetedly, and then focusing, take pictures and distance comparison, until this distance value meet setting requirement.After adopting the method for the application, generally only need secondary to focus, take pictures and distance comparison, setting requirement can be met, be such as less than or equal to 1mm.But special circumstances, such as setting requires strict, as required to be less than or equal to 0.5mm etc., then needs to focus for 3-4 time, take pictures and distance comparison.
7th step, three location: concavity circular arc type sway brace can swing, and the angle of swing be ± 60 °, during swing, swing speed want slower so that camera can take comparatively clear photograph so that PLC carries out identifying and measures.By the swing of concavity circular arc type sway brace, camera 7 according to setpoint frequency to the sensitive area auto-focusing on nautical receiving set 10 top, take pictures, each picture then this clapped and shooting time send PLC to; Then, be built-in with the image processing software of scale in PLC, automatically can calculate the fluctuation range of the position of the sensitive area on nautical receiving set top in each picture or the sensitive area on size and nautical receiving set top; Meanwhile, the fluctuation range of calculated fluctuation range and setting can compare and judgement by PLC.The fluctuation range wherein set is as being less than or equal to 1mm.
Claims (5)
1., based on the nautical receiving set localization method that medical supersonic is measured, it is characterized in that: comprise the following steps:
The first step, nautical receiving set is installed; The bottom of nautical receiving set is inserted in the nautical receiving set holder that can be elevated, makes the sensitive area on nautical receiving set top vertically upward; Described nautical receiving set holder be slidably arranged in there is concavity circular arc type sway brace nautical receiving set fixture on;
Second step, backstay free end points to the center of circle of concavity circular arc type sway brace in the first step; A backstay that can rotate is set above concavity circular arc type sway brace, when backstay rotates to time vertically downward, one end of backstay is fixedly installed a camera be connected with PLC, and the free end of backstay overlaps with the center of circle of concavity circular arc type sway brace in the first step;
3rd step, just locates: slip nautical receiving set holder, makes nautical receiving set holder, nautical receiving set coaxial with backstay; Then, the height of nautical receiving set holder rises, when proximity switch detect the sensitive area on nautical receiving set top and backstay free end close to time, nautical receiving set holder stops rising, has just located;
4th step, once focuses, takes pictures and range determination: rotated by backstay, make camera coaxial with nautical receiving set; Camera by the sensitive area auto-focusing on nautical receiving set top, take pictures, then send the picture that this is clapped to PLC; Then, be built-in with the image processing software of scale in PLC, automatically can calculate sensitive area and the backstay free end distance value between the two on nautical receiving set top;
5th step, secondary is located: the distance value data in the 4th step is passed to nautical receiving set holder by PLC, and nautical receiving set holder continues to rise, and nautical receiving set holder lifting height is equal with the distance value that PLC provides.
2. the nautical receiving set localization method measured based on medical supersonic according to claim 1, is characterized in that: also comprise the 6th step, three location: described concavity circular arc type sway brace can swing; By the swing of concavity circular arc type sway brace, camera according to setpoint frequency to the sensitive area auto-focusing on nautical receiving set top, take pictures, each picture then this clapped and shooting time send PLC to; Then, be built-in with the image processing software of scale in PLC, automatically can calculate the fluctuation range of the position of the sensitive area on nautical receiving set top in each picture or the sensitive area on size and nautical receiving set top; Meanwhile, the fluctuation range of calculated fluctuation range and setting can compare and judgement by PLC.
3. the nautical receiving set localization method measured based on medical supersonic according to claim 2, is characterized in that: the described fluctuation range set is as being less than or equal to 1mm.
4. the nautical receiving set localization method measured based on medical supersonic according to claim 4, it is characterized in that: between described 5th step and the 6th step, also be provided with secondary focusing, take pictures and distance comparison step, after secondary has been located, camera by the sensitive area on nautical receiving set top again auto-focusing, take pictures; Image processing software, will calculate sensitive area and the backstay free end distance value between the two on nautical receiving set top, again until this distance value is less than or equal to 1mm.
5. the nautical receiving set localization method measured based on medical supersonic according to claim 2, is characterized in that: the angle of described concavity circular arc type sway brace swing is ± 60 °.
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Cited By (1)
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| CN109387149A (en) * | 2018-11-01 | 2019-02-26 | 郑州云海信息技术有限公司 | A kind of server node enters the localization method of cabinet automatically |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109387149A (en) * | 2018-11-01 | 2019-02-26 | 郑州云海信息技术有限公司 | A kind of server node enters the localization method of cabinet automatically |
| CN109387149B (en) * | 2018-11-01 | 2021-02-09 | 苏州浪潮智能科技有限公司 | Positioning method for automatic cabinet entry of server node |
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| CN104330146B (en) | 2018-01-05 |
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