CN1195207C - Output measuring system for medical ultrasonic equipment - Google Patents
Output measuring system for medical ultrasonic equipment Download PDFInfo
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- CN1195207C CN1195207C CNB031289231A CN03128923A CN1195207C CN 1195207 C CN1195207 C CN 1195207C CN B031289231 A CNB031289231 A CN B031289231A CN 03128923 A CN03128923 A CN 03128923A CN 1195207 C CN1195207 C CN 1195207C
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Abstract
The present invention relates to a sound output measuring system of medical ultrasonic devices, which belongs to the field of medicine measuring instruments. A measurement hydrophone and a reference hydrophone are fixed on a two-way coordinate precise orientation and positioning system of a measured probe and a measurement hydrophone with 11 freedom degrees; the cables of the measurement hydrophone and the reference hydrophone are connected with the signal input end of a system of a storage oscillograph and a computer; a drive and control system of a three-dimensional sound field scanning step motor is connected with the signal output end of the system of a storage oscillograph and a computer through an RS232 interface via cables; the drive and control system of a three-dimensional sound field scanning step motor is connected with the two-way coordinate precise orientation and positioning system of a measured probe and a measurement hydrophone with 11 freedom degrees via a drive cable and a signal cable; auxiliary devices are connected with the system of a storage oscillograph and a computer; the two-way coordinate precise orientation and positioning system of a measured probe and a measurement hydrophone with 11 freedom degrees is arranged on a mechanical framework. The sound output measuring system can comprehensively measure all the specified indicator parameters of the Chinese standard 16846-1997 of an ultrasonic diagnostic instrument in a scanning state.
Description
Technical field
What the present invention relates to is a kind of ultrasonic device sound output measuring system, and particularly a kind of medical supersonic equipment sound output measuring system belongs to the medical measurement instrument field.
Background technology
Up to now, GB16846-1997 (idt.IEC61157-1992) " output of medical supersonic diagnostic device sound is announced and required " regulation ultrasonic diagnostic equipment sound output quantity announces that parameter is four basic indexs: maximum negative acoustic pressure p
-, spatial peaks time peak value is derived sound intensity I
Spta, beamformer output sound intensity I
ObWith average acoustical power P of maximum time
Max, also have a series of other auxiliary parameters in addition, about 10 remainders.Looking into new website through the Ministry of Education of the state looks into newly, find after retrieval again, with the maximally related document of the present invention be: Roy C.Preston, The NPLUltrasound Beam Calibrator, IEEE Trans.UFFC (Laue Preston, NPL ultrasonic beam calibrating device, international electronics and The Institution of Electrical Engineers's ultrasonics, ferroelectric and frequency control association periodical), 35 (2), 112-138,1988, through anatomizing, discovery is Britain's National Physical Laboratory (NPL) at the product in the eighties mid-term in last century, and diasonograph main flow probe mainly was that linear array and machine are swept probe at that time, the unified standard that still unmatchful in the world its output is measured.NPL UBC can only measure the scanning mode that stops that linear array autoscan state and machine sweep.Though its measurement parameter has p
-, I
SptaEtc. content, but, can not select wave beam to measure arbitrarily because can not carry out the are scan of pressing close to (requiring center of arc to overlap) of nautical receiving set end face to circular arc radiation end face with scanning covering of the fan center.And its physical construction regulates degree of freedom and has only 7, can not satisfy the requirement of 11 degree of freedom of needs of IEC61102-1991 regulation.Thereby can not precise orientation and location.Especially this equips the not I of the little shape broad beam of energy measurement high frequency catheter type probe
Ob, it is backward in technique, and function is out-of-date, belongs to obsolete product, can not satisfy the sound output measurement of protruding battle array, phased array automatic scanning system under the afterwards flourish various mode of operations and the requirement of corresponding national standards.NPL does not still have upgrading products so far and comes out.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of medical supersonic equipment sound output measuring system is provided, makes it finish measurement comprehensively diasonograph whole index parameters of GB16846-1997 regulation under the autoscan state of various mode of operations.
The present invention is achieved by the following technical solutions, measuring system of the present invention comprises: have the tested probe of 11 degree of freedom and measurement hydrophone two-way coordinates precise orientation and positioning system, three-dimensional sound field scanning step motor drive and control system, storage oscilloscope-computer system, measurement hydrophone and with reference to nautical receiving set, auxiliary device, and mechanical framework.Its annexation is: measurement hydrophone and be fixed on the tested probe and measurement hydrophone two-way coordinates precise orientation and positioning system with 11 degree of freedom by anchor clamps with reference to nautical receiving set, measurement hydrophone directly is connected with the signal input part of storage oscilloscope-computer system with cable with reference to nautical receiving set, to oscillograph input sound field sound pressure signal and timing reference signal, for the Computer Storage computing; Three-dimensional sound field scanning step motor drive is connected with the signal output part of storage oscilloscope-computer system through cable by the RS232 interface with control system, accept its control command signal, three-dimensional sound field scanning step motor drive is connected with positioning system with measurement hydrophone two-way coordinates precise orientation with the tested probe with 11 degree of freedom with signal cable through driving cable with control system; Auxiliary device links to each other with storage oscilloscope-computer system, and auxiliary device comprises display and printer, is used for programming, operation, display waveform and print measurement report; Mechanical framework comprises base, column, and column comprises column and two arc columns of a font again, and the column of door font is arranged on the base rear, and the arc column is arranged on the base both sides; Having the tested probe of 11 degree of freedom and measurement hydrophone precise orientation and positioning system is arranged on the mechanical framework.
Having the tested probe of 11 degree of freedom and measurement hydrophone precise orientation and positioning system comprises: tank, tested probe are regulated support, nautical receiving set, nautical receiving set and are installed and regulate support, nautical receiving set 3-D scanning mechanism, its connected mode is: tank is the big drum of organic glass, be positioned on the base of total system center interior dress degassed water; Nautical receiving set and installation thereof are regulated support and are arranged in tank, and nautical receiving set is installed the adjusting support and even is made of two orthogonal strands of U-shaped support; The solid base of nautical receiving set fixes on the U-shaped support that one of them opening makes progress, and the U-shaped support is provided with two and regulates knobs, two position angles of scalable nautical receiving set; Nautical receiving set is installed and is regulated the elevating lever lower end that support is arranged on nautical receiving set, and the upper end of elevating lever is arranged in the nautical receiving set 3-D scanning mechanism, and tested probe is regulated support and is arranged in the tank.
Nautical receiving set 3-D scanning mechanism comprises: z traversing handwheel governor motion and x, two sleeve screw rods of y direction-planker motor drive mechanism, its connected mode is: z traversing handwheel governor motion adopts the rack-and-pinion engagement, be connected with the elevating lever of nautical receiving set, and the drive elevating lever moves up and down; Z traversing handwheel governor motion is fixed on x, on y direction two sleeve screw rods-planker motor drive mechanism, adopts stepper motor or handwheel to drive the nautical receiving set elevating lever and makes x, y direction rectilinear motion.Whole nautical receiving set 3-D scanning mechanism is arranged on the column of door font at mechanical framework base rear.
Nautical receiving set is installed in to install around the nautical receiving set of two orthogonal turning axle rotations in the surface level and regulates on the support, and nautical receiving set can change two rotation angle α ', β ' with adjusting knob easily on the water surface.Nautical receiving set is installed the adjusting support and is arranged on the elevating lever.Elevating lever can be with three handwheels, its three-dimensional position of manual adjustments x, y, z.Wherein also can move automatically during the big displacement in xy position, by step motor drive, z direction vertical moving adopts tooth bar-worm gear to drive, and has auto-lock function.Exquisite dexterous nautical receiving set support design makes α ', and β ' angular adjustment is all carried out on the water surface.The parts of all contact water all adopt stainless steel or plastic production.Adopt the organic glass tank, can clear observation water in tested probe and nautical receiving set attitude.High-precision design, accurate processing and strict process control have guaranteed the pinpoint accuracy of system.
Tested probe is regulated support and is comprised: α, β, γ angle adjusting mechanism, XZ two-dimensional position governor motion, tested probe clamping plate, its connected mode is: tested probe is regulated support and is fixed on two arc columns of mechanical framework base both sides, XZ two-dimensional position governor motion is fixed on ring inboard, the left side in α, β, the γ angle adjusting mechanism, tested probe clamping plate are installed on the slide plate of XZ two-dimensional position governor motion Z direction, are regulated the X position and the Z position of tested probe with knob.
1, α, β, γ angle adjusting mechanism
Adopt three ring gyro posture three-axle table structures, obtain α, beta, gamma Three Degree Of Freedom corner guarantees that three axes intersects at a point:
Outer shroud: be fixed on two arc-shaped rail and slide blocks on the arc column by two pairs and form, on the annular track on two arc columns of rigid circular base both sides, fix a pair of arc-shaped rail, a pair of circular arc slide block is installed on arc-shaped rail.Axis hole in two slide blocks is used for installing two sections coaxial rotating bent axles of directions X.Adjusting slider can rotate along circular trace around the Z axle, changes the γ angle.
Middle ring: middle ring is circular, fixes with two sections bent axles in the outer shroud slide block axis hole in its diametric(al) outside.Available handwheel drives and rotates around X-axis, regulates the α angle.
Interior ring: interior ring is the square with four big fillets, its rotation is positioned at and the same surface level of X-axis line and vertical with X-axis, the Y turning axle is installed in the bearing shell on the diametric(al) of middle ring (annulus), can be around the Y turning axle, its corner β can drive with handwheel, also the available step driven by motor is controlled autoscan by computing machine.Interior two rings adopt the rotating torque balancing techniques, and B is rotated evenly.
2.XZ two-dimensional position governor motion
XZ two-dimensional position governor motion comprises: vertical (Z) and level (X) two are to accurate sliding panel guide rail and fine pitch auxiliary driving structure, and its connected mode is: a ring left side was inboard in XZ two-dimensional position governor motion was rigidly fixed in.Vertically (Z) is connected with the manual adjustments knob by fine pitch auxiliary driving structure to accurate sliding panel guide rail with level (X) two.
3. tested probe clamping plate
Tested probe is tight with tested probe clip plate holder, and tested probe clamping plate are a pair of nylon clamping plate, and wherein clamping plate are fixed on the Z slide plate of XZ two-dimensional position governor motion with 2 Y position adjustments screws.Mounting hole on the clamping plate is the strip hole, carries out the adjusting of clamping plate position in the time of can making strap with screw in the Y direction.
The present invention has tested probe and the measurement hydrophone precise orientation and the positioning system of 11 degree of freedom, the minute adjustment and the collimation that guarantee the two position are directed, 1. the locus of tested probe gripper can be adjusted, make the covering of the fan center of sector display (protruding battle array, phased array, mechanical sector scanning) and broad beam probe, accurately be positioned the initial point of its coordinate system, tested probe both can be around Y-axis in the step-by-step movement precision sweep of β angular direction.Also can allow nautical receiving set along the rectilinear scanning of y direction.Guaranteed to measure the I of fan sweeping probe
ObAnd P
MaxThe time degree of accuracy.And the NPL system does not have this regulatory function, can not correctly measure the I of fan sweeping probe
ObWith P
Max2. the design of nautical receiving set mounting bracket is carried out being adjusted on the water surface of two rotation angle easily.The NPL system has only a rotation angle scalable.
Adopt the three-dimensional sound field scanning step motor drive and the control system of single-chip microcomputer, this system connects with computing machine by the RS232 interface, realizes computer control, also can hand-guided on guidance panel.This system comprises: Single Chip Microcomputer (SCM) system plate, interface board, stepper motor, stepper motor driver, position transducer, and its connected mode is: computing machine is connected with the Single Chip Microcomputer (SCM) system plate through the RS232 interface; The Single Chip Microcomputer (SCM) system plate links to each other with operating key (knob) on stepper motor driver, position transducer and the guidance panel respectively by interface board, 3 stepper motors respectively with nautical receiving set 3-D scanning mechanism in x, the screw mandrel in two sleeve screw rods of y direction-planker motor drive mechanism and in the ring rotating shaft link to each other.The Single Chip Microcomputer (SCM) system plate is sent to stepper motor driver to control signal by interface board, and drive stepping motor produces scanning motion.Be sent to after Single Chip Microcomputer (SCM) system handled through interface board from the operation signal of the position signalling of position transducer and limit signal or guidance panel operating key (knob), enter computing machine, carry out subsequent treatment for computing machine by the RS232 interface.
Three-dimensional sound field scanning step motor drive and control system receive the P-pulse from scrambler in drive stepping motor, determine that accurately the motor corner is to determine the coordinate of motion.Realize that nautical receiving set is respectively to the plane and the face of cylinder precision sweep of the transducer output end face sound field of linear array probe and sector display (protruding battle array, phased array and mechanical sector scanning) probe and the little shape broad beam of high frequency catheter type probe, with measure its wave beam output acoustic power and-6dB ultrasonic beam area, calculate I accurately
Ob
Measure tested probe with nautical receiving set and launch space acoustic pressure wave shape distribution signal in the ultrasonic sound field, input oscillograph-computing machine to tank; With reference to the fixed beam ultrasonic pulse that nautical receiving set is gathered tested probe, the input oscillograph becomes time reference as trigger pip; Computing machine is gathered nautical receiving set signal, code device signal; Storage; Calculate, and the gated sweep drive stepping motor realizes the scanning motion to sound field.
Can not accurately be adjusted to the collimating status of the maximum direction of directive property of the beam axis of ultrasonic probe and nautical receiving set at the degree of freedom very few (having only 5 degree of freedom) of in the past measuring system mechanism, more can't realize situation the end face cylinder scanning of sector display probe as the NPL system.Among the present invention tested probe have three straight line one-movement-freedom-degrees (X, Y, Z) direction of principal axis and around X, Y, three rotational degree of freedom α of Z axle rotation, beta, gamma makes the orientation and the location of wave beam of probe very accurate and convenient.And the support of nautical receiving set has x, y, three straight line one-movement-freedom-degrees of z and two rotational degree of freedom α ', β '.Receive the maximum direction of directive property and realize that acoustics is coaxial through meticulously regulating these 11 degree of freedom can guarantee to pop one's head in launching beam and nautical receiving set.The reference nautical receiving set in adjustable position and orientation is installed on tested probe bracket, relative position rigidly fixes between it and probe, so can receive the autoscan state under the ping of the ultrasonic scanning line group that probe launches to specific direction, and the input oscillograph has guaranteed oscillographic synchronous and waveform stabilization demonstration as trigger pip (time reference).
Under the coaxial condition of acoustics, by regulating position handwheel on the nautical receiving set, make nautical receiving set move the while demonstrating the voltage waveform integrated square value that computing machine is calculated immediately on observation acoustic pressure waveform and another color monitor on the oscillograph, find maximum negative value p along beam axis
-With the locus of maximum voltage waveform integrated square value, calculate corresponding spatial peaks time average sound intensity I
SptaWith the negative acoustic pressure p of maximum
-, measure maximum acoustical power P
MaxWith beamformer output sound intensity I
ObThe time, the central axis that nautical receiving set is adjusted to probe is the position of close end face, and when tested probe was linear array, nautical receiving set was made the two-dimensional plane autoscan in the xy plane.When tested probe is protruding battle array (or broad beam probe), should regulate the XZ position knob of probe holder, rotate the β angle, make the position when the nautical receiving set acoustic image is positioned at the left and right sides on the B ultrasonic screen symmetrical and equal everywhere to the distance on acoustic image central angle summit, show that the protruding battle array acoustic centre of source is positioned on the Y-axis, start-up routine is popped one's head in and is just rotated with Δ β angle step-by-step movement around Y-axis automatically then, and nautical receiving set is implemented face of cylinder autoscan on protruding battle array surface.Amplified behind the core out wave beam on the oscillograph, start the computing machine special software then, control step driven by motor nautical receiving set and probe movement make nautical receiving set along the detecting head surface autoscan, carry out the time integral and the space integral of nautical receiving set signal voltage square waveform, calculate P at last automatically
MaxAnd I
ObValue.
Entire measuring device adopts one with reference to nautical receiving set, extract the ping of the particular beam group in the tested probe emission sound field under the autoscan state, as reference signal and oscillographic trigger pip, with the demonstration of stabilization signal waveform, and with this as the time reference in the scan period.The advanced oscilloscope of broadband, high sampling rate and large buffer memory and built-in computing machine combines with application software, can realize image data and carry out subsequent treatment that the componental movement mechanism in the control system is to finish maximum acoustical power P
MaxWith beamformer output sound intensity I
ObMeasurement, realize friendly human-computer interaction interface, finish data recording, storage and printing.
The present invention has substantive distinguishing features and marked improvement, and the present invention has created a kind of tested probe and measurement hydrophone two-way coordinates precise orientation and positioning system with 11 degree of freedom, guarantees that the minute adjustment of the two position and collimation are directed; Adopt the three-dimensional sound field scanning step motor drive and the control system of single-chip microcomputer, realize nautical receiving set at x, the high precision rectilinear scanning of y direction and tested probe are around the high precision stepping angle scanning of Y-axis rotation angle β; Adopt the advanced oscilloscope of broadband, high sampling rate and large buffer memory and built-in computing machine, can carry out signals collecting, stores processor and Electric Machine Control simultaneously, satisfy measurement requirement; Adopting the sensitive element diameter is the PVDF piezoelectric membrane aciculiform nautical receiving set of 0.6mm, and its frequency response is up to more than the 10MHz.The present invention can finish the measurement to diasonograph whole index parameters of GB 16846-1997 regulation under the autoscan state of various mode of operations comprehensively.
Description of drawings
Fig. 1 system architecture synoptic diagram of the present invention
Fig. 2 has tested probe and the measurement hydrophone two-way coordinates precise orientation and the positioning system structural representation of 11 degree of freedom
Embodiment
As depicted in figs. 1 and 2, the present invention includes: tested probe and measurement hydrophone two-way coordinates precise orientation and positioning system 1 with 11 degree of freedom, three-dimensional sound field scanning step motor drive and control system 2, storage oscilloscope-computer system 3, measurement hydrophone and with reference to nautical receiving set 4, auxiliary device 5, and mechanical framework 6, its annexation is: measurement hydrophone and be fixed on the tested probe and measurement hydrophone two-way coordinates precise orientation and positioning system 1 with 11 degree of freedom by anchor clamps with reference to nautical receiving set 4, measurement hydrophone directly is connected with the signal input part of storage oscilloscope-computer system 3 with cable with reference to nautical receiving set 4, three-dimensional sound field scanning step motor drive is connected through the signal output part of cable with storage oscilloscope-computer system 3 by the RS232 interface with control system 2, three-dimensional sound field scanning step motor drive is connected with positioning system 1 with measurement hydrophone two-way coordinates precise orientation with the tested probe with 11 degree of freedom with signal cable through driving cable with control system 2, auxiliary device 5 links to each other with storage oscilloscope-computer system 3, has the tested probe of 11 degree of freedom and measurement hydrophone precise orientation and positioning system 1 and is arranged on the mechanical framework 6.
Having the tested probe of 11 degree of freedom and measurement hydrophone precise orientation and positioning system 1 comprises: tank 32, tested probe are regulated support 7, nautical receiving set 8, nautical receiving set and are installed and regulate support 9, nautical receiving set 3-D scanning mechanism 10, its connected mode is: tank 32 is the big drum of organic glass, is positioned on the base 26 of total system center; Nautical receiving set 8 and nautical receiving set are installed adjusting support 9 and are arranged in tank 32, nautical receiving set is installed adjusting support 9 and even is made of two U-shaped supports, 11 orthogonal strands, nautical receiving set 8 is fixed therein on the U-shaped support 11 that an opening makes progress, U-shaped support 11 is provided with two and regulates knob 27, nautical receiving set is installed and is regulated elevating lever 28 lower ends that support 9 is arranged on nautical receiving set 8, the upper end of elevating lever 28 is arranged in the nautical receiving set 3-D scanning mechanism 10, and tested probe is regulated support 7 and is arranged in the tank 32.
Nautical receiving set 3-D scanning mechanism 10 comprises: z traversing handwheel governor motion 12 and x, y direction two sleeve screw rods-planker motor drive mechanism 13.Its connected mode is: z traversing handwheel governor motion 12 adopts the rack-and-pinion engagement, be connected with the elevating lever 28 of nautical receiving set 8, and drive elevating lever 28 moves up and down: z traversing handwheel governor motion 12 is fixed on x, on y direction two sleeve screw rods-planker motor drive mechanism 13, adopt stepper motor to drive nautical receiving set elevating lever 28 and make x, y direction rectilinear motion, whole nautical receiving set 3-D scanning mechanism 10 is arranged on the column 29 of door font of mechanical framework 6.
Tested probe is regulated support 7 and is comprised: α, β, γ angle adjusting mechanism 14, XZ two-dimensional position governor motion 15, tested probe clamping plate 16, its connected mode is: tested probe is regulated support 7 and is fixed on two arc columns of mechanical framework 6 base both sides, XZ two-dimensional position governor motion 15 is fixed on the inboard, the interior ring left side of α, β, γ angle adjusting mechanism 14, tested probe clamping plate 14 are installed on the slide plate of XZ two-dimensional position governor motion 15Z direction, are regulated the X position and the Z position of tested probe with adjusting knob.
α, β, γ angle adjusting mechanism 14 adopt three ring gyro posture three-axle table structures, outer shroud 17 is fixed on two arc-shaped rail 18 and slide blocks 19 on the arc column 30 by two pairs and forms, on the annular track on two arc columns 30 of base both sides, fix a pair of arc-shaped rail 18, a pair of circular arc slide block 19 is installed on arc-shaped rail 18, by the axis hole in two slide blocks 19 two sections coaxial rotating bent axles of directions X are installed, adjusting slider 19 can rotate along circular trace around the Z axle, changes the γ angle; In ring 20 circular, fix with two sections bent axles in outer shroud slide block 19 axis holes in its diametric(al) outside, available handwheel drives and rotates around X-axis, adjusting α angle; Interior ring 21 squares that are with four big fillets, its rotation is positioned at and the same surface level of X-axis line and vertical with X-axis, in the bearing shell during the Y turning axle is installed on the diametric(al) of ring 20, and can be around the Y turning axle, its corner β can drive with handwheel, also the available step driven by motor.
XZ two-dimensional position governor motion 15 comprises: vertical Z and horizontal X two are to accurate sliding panel guide rail 33, fine pitch auxiliary driving structure 34, and its connected mode is: a ring left side was inboard in XZ two-dimensional position governor motion 15 sides were rigidly fixed in.Vertically (Z) is connected with the manual adjustments knob by fine pitch auxiliary driving frame mode to accurate sliding panel guide rail 33 with level (X) two.
Tested probe clamping plate 16 are a pair of nylon clamping plate, and wherein clamping plate are fixed on the Z slide plate of XZ two-dimensional position governor motion 15 with 2 Y position adjustments screws, and the mounting hole on the clamping plate is the strip hole, during strap in the Y direction with screw adjustable clamp Board position.
Three-dimensional sound field scanning step motor drive and control system 2 adopt single-chip microcomputer, comprise: Single Chip Microcomputer (SCM) system plate 22, stepper motor 23, stepper motor driver 24, position transducer 25, its connected mode is: computing machine is connected with Single Chip Microcomputer (SCM) system plate 22 through the RS232 interface; Single Chip Microcomputer (SCM) system plate 22 links to each other with operating key on stepper motor driver 24, position transducer 25 and the guidance panel respectively by interface board, 3 stepper motors 23 respectively with nautical receiving set 3-D scanning mechanism in x, the screw mandrel in two sleeve screw rods of y direction-planker motor drive mechanism 13 and in the ring rotating shaft link to each other.
Mechanical framework 6 comprises: base 26, column 31, column 31 comprise column 29 and two arc columns 30 of a font again, and the column 29 of door font is arranged on base 30 rears, and arc column 30 is arranged on base 26 both sides.
Claims (3)
1, a kind of medical supersonic equipment sound output measuring system, mainly comprise: three-dimensional sound field scanning step motor drive and control system (2), storage oscilloscope-computer system (3), measurement hydrophone and with reference to nautical receiving set (4), auxiliary device (5), mechanical framework (6), it is characterized in that, also comprise: tested probe and measurement hydrophone two-way coordinates precise orientation and positioning system (1) with 11 degree of freedom, its annexation is: measurement hydrophone and be fixed on the tested probe and measurement hydrophone two-way coordinates precise orientation and positioning system (1) with 11 degree of freedom by anchor clamps with reference to nautical receiving set (4), measurement hydrophone directly is connected with the signal input part of storage oscilloscope-computer system (3) with cable with reference to nautical receiving set (4), three-dimensional sound field scanning step motor drive is connected through the signal output part of cable with storage oscilloscope-computer system (3) by the RS232 interface with control system (2), three-dimensional sound field scanning step motor drive is connected with positioning system (1) with measurement hydrophone two-way coordinates precise orientation with the tested probe with 11 degree of freedom with signal cable through driving cable with control system (2), auxiliary device (5) links to each other with storage oscilloscope-computer system (3), has the tested probe of 11 degree of freedom and measurement hydrophone precise orientation and positioning system (1) and is arranged on the mechanical framework (6).
2, medical supersonic equipment sound output measuring system according to claim 1, it is characterized in that, three-dimensional sound field scanning step motor drive and control system (2) adopt single-chip microcomputer, comprise: Single Chip Microcomputer (SCM) system plate (22), stepper motor (23), stepper motor driver (24), position transducer (25), its connected mode is: computing machine is connected with Single Chip Microcomputer (SCM) system plate (22) through the RS232 interface, Single Chip Microcomputer (SCM) system plate (22) by interface board respectively with stepper motor driver (24), operating key on position transducer (25) and the guidance panel links to each other, stepper motor (23) links to each other with the middle x of nautical receiving set 3-D scanning mechanism (10), screw mandrel in two sleeve screw rods of y direction-planker motor drive mechanism (13) and the rotating shaft of interior ring.
3, medical supersonic equipment sound output measuring system according to claim 1, it is characterized in that, mechanical framework (6) comprising: base (26), column (31), column (31) comprising: the column (29) and the arc column (30) of door font, the column (29) of door font is arranged on base (26) rear, and arc column (30) is arranged on base (26) both sides.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031289231A CN1195207C (en) | 2003-05-29 | 2003-05-29 | Output measuring system for medical ultrasonic equipment |
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|---|---|---|---|
| CNB031289231A CN1195207C (en) | 2003-05-29 | 2003-05-29 | Output measuring system for medical ultrasonic equipment |
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| CN1195207C true CN1195207C (en) | 2005-03-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427040C (en) * | 2006-07-07 | 2008-10-22 | 南京大学 | Medical ultrasonic detection method and system |
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| CN102279045A (en) * | 2011-05-03 | 2011-12-14 | 北京理工大学 | Device for measuring characteristics of sound field of air-coupled ultrasonic detection transducer |
| CN102279044A (en) * | 2011-05-03 | 2011-12-14 | 北京理工大学 | Method for automatically collimating hydrophone in ultrasonic sound filed measurement |
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| CN110243460B (en) * | 2019-05-16 | 2021-02-09 | 西安交通大学 | Ultrasonic sound field measuring device and method |
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2003
- 2003-05-29 CN CNB031289231A patent/CN1195207C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427040C (en) * | 2006-07-07 | 2008-10-22 | 南京大学 | Medical ultrasonic detection method and system |
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| CN1453562A (en) | 2003-11-05 |
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