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CN2460047Y - Computer virtual B ultrasonic diagnostic apparatus - Google Patents

Computer virtual B ultrasonic diagnostic apparatus Download PDF

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Publication number
CN2460047Y
CN2460047Y CN00260310U CN00260310U CN2460047Y CN 2460047 Y CN2460047 Y CN 2460047Y CN 00260310 U CN00260310 U CN 00260310U CN 00260310 U CN00260310 U CN 00260310U CN 2460047 Y CN2460047 Y CN 2460047Y
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ultrasonic
usb
computer
probe
control box
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Expired - Fee Related
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CN00260310U
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Chinese (zh)
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黄健平
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Abstract

The utility model relates to a computer virtual B ultrasonic device, which comprises a B ultrasonic probe, a B ultrasonic control box and a connecting cable. The utility model is characterized in that functions of logic control and signal processing can be realized by the B ultrasonic control box to carry out communication with a computer through a USB universal serial bus, and the central processing unit of the existing B ultrasonic device and a television tube are replaced by powerful calculation function of the computer and a high resolution display; software can be realized by using a modular mode, and the software can be disengaged from the B ultrasonic hardware to independently operate. The hardware part is matched with abundant software and the application of the computer internet to cause a plurality of auxiliary diagnostic functions to be developed.

Description

Computer virtual B ultrasonic instrument
This utility model relates to armarium, and particularly B ultrasonic equipment more particularly, relates to a kind of computer virtual B ultrasonic instrument that is connected communication by the USB USB (universal serial bus) with the computer USB port.
Existing Type B ultrasonic device all as armarium independently, itself has corresponding ultrasound emission and reception, echo-signal amplification and detection and ultrasonoscopy Presentation Function, and its demonstration is exported and generally is to use the low resolution teletube.For this type of Type B ultrasonic device, exist following main not enough: the first involves great expense, and particularly high-grade B-mode instrument is because of it realizes complicated computer procedures with hardware circuit, as realize functions such as picture interpolation, ice knot, character demonstration with circuit, cost is difficult to lower; It two is to use the teletube display image, and it is more serious to glimmer, unfavorable to eye care; It three is that software program because of equipment is to be cured in the semiconductor chip, so think that upgrading is impossible substantially; It four is the restrictions that are subjected to equipment internal processor operational capability, program curing size, ram space size, makes equipment be difficult to finish the Premium Features that a large amount of calculating of needs just can be finished; It five is some low and middle-grade B ultrasonic audio clinic instrument, is subjected to the restriction of equipment internal processor operational capability, program curing size, ram space size, saves a lot of useful functions, and doctor's diagnosis is affected; At last, because of lacking the ability with the computer communication, testing result is difficult to do non-volatile recording, medical record management, the consultation of doctors and the long-distance on-line consultation of doctors.
This utility model purpose is to provide a kind of computer virtual B ultrasonic instrument, overcome the above-mentioned deficiency of existing B ultrasonic instrument, the signal that Ultrasonic-B probe is transmitted is after B ultrasonic control box conversion process, by USB USB (universal serial bus) and computer communication, powerful calculation function and high resolution display with computer, replace the central processing unit and the teletube of existing B ultrasonic equipment, software is realized in modular mode, can break away from B ultrasonic hardware independent operating.Described hardware components cooperates the abundant software and the application of computer interconnected network, can develop multiple auxiliary diagnosis function.
This utility model is achieved by the following technical solution: a kind of computer virtual B ultrasonic instrument, comprise the B ultrasonic control box that can connect Ultrasonic-B probe, and it is characterized in that described B ultrasonic control box has a usb interface module, can be connected with the USB PORT COM of computer.When scanning the position of patient's desire inspection with ultrasonic probe, the echo-signal of ultrasonic probe record is through the amplification of B ultrasonic control box, detection, A/D conversion, Signal Compression and after encoding, send to the USB PORT COM of computer, computer will receive signal by decoding and digital filtering, and the result is presented on the high-resolution display.
Computer virtual B ultrasonic instrument according to this utility model provides is characterized in that, described B ultrasonic control box uses connection cord line and the described compunication that meets the USB standard.
Computer virtual B ultrasonic instrument according to this utility model provides is characterized in that, described ultrasonic probe can be selected a kind of in following: linear array shape probe, sector probe and puncture are with probe.
The computer virtual B ultrasonic instrument that provides according to this utility model, it is characterized in that, described B ultrasonic control box comprises emission and the focus control door that is connected with the Ultrasonic-B probe socket, receive and the time-delay control gate, also comprise with described reception and time-delay control gate and be connected transmission voltage of signals/current converter successively, logafier, detection and depth compensation, the A/D conversion, programmable logic chip FPGA, USB single-chip microcomputer and USB gang socket, described programmable logic chip FPGA again respectively with described emission and focus control door, receive and the time-delay control gate, logafier, detection and depth compensation, the A/D conversion is connected with the USB single-chip microcomputer, realizes the logic control function of described B ultrasonic control box.
The computer virtual B ultrasonic instrument that provides according to this utility model, it is characterized in that, described USB single-chip microcomputer uses the PIC16C765 chip of Microchip company, will be carried out the USB coding by the signal that described programmable logic chip FPGA transmits and sends to USB cable gang socket.
Implement the computer virtual B ultrasonic instrument that this utility model provides, the B ultrasonic control box carries out communication by USB connection cord and computer, to be sent to computer after treatment by the echo-signal that Ultrasonic-B probe transmits, utilize Windows operating system, mix the software of the be independent of B ultrasonic peripheral hardware operation that realizes with modular mode, make it have following advantage: at first to be to have simplified design, cancelled the RAM storage in the existing B ultrasonic, character generator, D/A, the synthetic partly circuit that waits of TV makes total simpler, and cost is more cheap; It two is to use fpga chip and USB port single-chip microcomputer, can needing originally realize a large amount of hard-wired functions with software, the integrated level height, and fault rate is low, compact conformation; It three is to use computer to carry out the digital processing function, and speed is fast, and is powerful, can finish a lot of functions of original high-grade B ultrasonic, and software upgrading is convenient; It four is that software can be used as stand-alone program and uses, be used for will storage case history playback and the remote diagnosis and the consultation of doctors; It five is that long-time preservation can be done in patient history and B ultrasonic record in hard disk, can dump to imprint CDs or magneto-optic disk (M0) is done nonvolatil preservation; At last, can case history and B ultrasonic record be sent on the computer of networking, cooperate related software can do the remote diagnosis and the consultation of doctors by Intranet or Internet technology.
Below in conjunction with drawings and Examples, further specify characteristics of the present utility model, in the accompanying drawing:
Fig. 1 is the connection diagram of computer virtual B ultrasonic instrument of the present utility model;
Fig. 2 is the principle schematic of B ultrasonic control box in this utility model;
Fig. 3 is the circuit diagram that the USB single-chip microcomputer uses the PIC16C765 chip in this utility model.
As shown in Figure 1, computer virtual B ultrasonic instrument of the present utility model comprises Ultrasonic-B probe 1, probe connecting line 2, B ultrasonic control box 3, USB connection cord 4, computer 5 and display 6.
Pass through 4 communications of USB connection cord between control box 3 of B ultrasonic described in this utility model and the computer 5.USB, be computer universal serial bus (Universal Serial Bus), be the input that is connected with ancillary equipment of computer system the output interface standard, USB is by the standard plug of one 4 pin, adopt the daisy chain form that all peripheral hardwares are coupled together, support hot plug and plug and play.In theory, USB can connect 127 equipment, the equipment of all connections is shared same signal, information on the bus is with the packet form transmission, all functional devices receive all bags, the specific equipment of computer by adding that in bag specific address is selected, have only with the address with the functional device of answering just to the bag that comprises this address as going out to react.
In USB V1.1 standard (on JIUYUE 23rd, 1998), the high transmission speed that USB supports is 12Mbps, also supports the low-speed device of 1.5Mbps to use simultaneously.Though the transmission speed of USB has 12Mbps, but because the bandwidth of USB is that armamentarium is shared, if single equipment just takies the bandwidth of whole interface, bring difficulty will for the use of other equipment, this is the speed restriction of USB, has considered this speed restriction in the design process of the present utility model.
The ultransonic design detection range of Type B is subjected to ultrasonic pulse repetition rate Fc (Fc=1/T) decision:
Dmax≤1/2CT。
Wherein, Dmax is a maximum detectable range; C is the average speed that ultrasound wave is propagated in human body; T is the required time of sound wave round trip.We get Dmax=27CM, and C=1540M/S can calculate:
T≥2Dmax/C=350uS
Ultrasound wave is propagated average speed corresponding to a ultrasound emission in human body, (ultrasound emission of common middle-grade B ultrasonic is sampled as 128 points/6bit) with the sampling resolution of 256 points/8bit sampling design.The NRIT data coded system packing with USB of this sample information and address signal is sent, and the structure of the packet of USB is as shown in the table, and we can calculate the data packet length of a ultrasound emission.
Synchronization field The bag sign Data field CRC check
8bits 8bits 0-1032 byte 16bits
CRC check=261byte of ultrasound data+2byte of address date+256byte of the bag sign+1byte of synchronization field+1byte of 1byte
Transfer rate with 6Mbps is calculated, and we can calculate the time of transmission 261byte.
t261=261×8/6=348uS
Hence one can see that: T=350uS＞t261, can satisfy the requirement of USB transfer rate.
As shown in Figure 2, the internal circuit of B ultrasonic control box of the present utility model comprises ultrasonic probe gang socket, emission and focus control door, reception and time-delay control gate, converter, logafier, detection and depth compensation, A/D conversion, programmable logic chip FPGA, USB single-chip microcomputer and USB gang socket.
The logic control of whole B ultrasonic control box partly is made up of FPGA field programmable logic chip, and fpga chip can be organized the box various logic functions neatly by programming, and the logic function that realizes in this utility model design comprises: synchronizing signal produces; Ultrasound emission logic and emission focus on coding; Ultrasonic received code; And ultrasonic receive logic; Ultrasound data buffer memory and microcontroller communication logic.Send trigger impulse, focus on signals such as postponing sign indicating number, control gate sign indicating number toward emission and focus control door by programmable logic chip FPGA, emission and focus control door are by respective coding and focus on to postpone in ultrasonic probe 1 corresponding ultrasonic matrix wafer set and send ultrasonic pulse, to produce corresponding focus supersonic signal.Send signals such as echo delay signal, electron focusing signal, control gate sign indicating number by programmable logic chip FPGA toward reception and time-delay control gate, be used to receive ultrasound echo signal.Focus ultrasonic mode in the present embodiment adopts 4 dynamic types of focusing of afocal variable, ultrasound echo signal carries out the prime amplification through reception and time-delay control gate, after electron focusing postpones, output to logafier by converter, through detection and depth compensation and A/D conversion, convert digital signal to.Ultrasound echo signal behind the digitized is delivered to programmable logic chip FPGA, carry out the data buffer memory in its memory element, carry out communication by programmable logic chip FPGA and USB single-chip microcomputer, this signal is sent to single-chip microcomputer, FPGA also reaches single-chip microcomputer with the line locking signal simultaneously.
As shown in Figure 3, USB single-chip microcomputer of the present utility model uses the PIC16C765 chip of Microchip company, and PIC16C765 has the USB interface design, and relevant interface routine module.Carry out USB coding by single-chip microcomputer in the present embodiment and send to USB gang socket.
Computer software of the present utility model partly works in the Windows operating system platform of Microsoft, adopt 32 programmings, can under the operating system platform of Windows95/98/2000/NT and later release, work, cause Windows NT is not so far still supported the USB standard, so can only the operating software part under Windows NT operating system, can not do actual collection.As software section of the present utility model, allow it to break away from hardware components independent operating of the present utility model, but being made the independent operating part, software section can exchange patient's check result data better.We can equip the complete virtual B ultrasonic equipment (comprising computer, virtual B ultrasonic software and hardware) of a cover at inspection chamber, computer and virtual B ultrasonic software are only equipped by other section office, patient does ultrasound diagnosis at inspection chamber with virtual B ultrasonic equipment, by computer networking, the doctor of section office can observe patient's B ultrasonic image in real time or afterwards by virtual B ultrasonic software outside other, and such situation also can be undertaken by Internet.
Computer software of the present utility model is realized in modular mode, comprises following main modular:
1, USB communication module, its bottom uses the port drivers of WINDOWS standard, by advanced language programming and microcontroller communication, is used to accept the B ultrasonic signal and transmits control signal.
2, B ultrasonic image display module is used for the B ultrasonic signal is shown in computer screen.According to the probe difference of selecting for use, B mode, B+M mode, M mode, D mode and annular display mode etc. are arranged.According to the diagnosis needs, can adjust gradation of image, dynamic range, echo enhancing, depth gain compensation, γ correction etc.
3, B ultrasonic parameter measurement module has distance, area, girth, angle, valve speed, time, pulse frequency, ejection fraction, every measurement functions such as rich output, heart output.
4, ultrasonic doppler module is the enhancement function module.Cooperate the pulse Doppler probe, can survey blood flow direction, average speed, maximum speed, blood pressure gradient, cardiac flow parameter etc.Cooperate the transcranial doppler probe, can measure through the cranium blood flow.Cooperate the Umbilical Blood Flow doppler transducer, can measure fetal umbilical blood stream.
5, video output module is the enhancement function module.Cooperate the video image output board, the B ultrasonic image transitions that shows on the display is become video output, also can be used for connecting video printer, the output image hard copy.
6, printer output module is used for B ultrasonic image and diagnostic result are outputed to printer.As standard output, this software is supported the printer of all Windows standards, the strong use high-resolution rgb image ink-jet printer of recommending, and it has with low cost, and image effect can satisfy B ultrasonic diagnosis requirement substantially near the video printer output effect.And have image and case history and merge output, output advantages such as the holding time is long as a result.
7, signal hard-disc storage module, after computer receives the B ultrasonic signal from USB port, at first be stored to hard disk, as long as the doctor has selected keeping records, this process can be carried out automatically and be kept basically in real time, this function can replace cooperating now the simulation video recording equipment of ordinary ultrasonography b use, and the B ultrasonic signal is carried out the real-time digital video recording.
8, optical disc storage module, for the permanent preservation of data or case history exchange, this software design the optical disc storage interface, can support popular now moving CD medium, comprise imprint CDs, CD-RW, M0 magneto-optic disk, can increase the DVD form later on.
9, mixed-media network modules mixed-media is used for networking data and exchanges, and uses ICP/IP protocol, under hardware device is supported, can carry out Intranet link or be connected to Internet, supports static schema and dynamic mode.Under static schema, the B ultrasonic log file that is kept in the hard disk is sent on server or other the terminal computer by network, receive that the computer available virtual B ultrasonic software of file is opened playback and analysis.Dynamic mode uses a kind of technology of internet data broadcasting, with the computer of WKG working patient ultrasound diagnosis main frame as data broadcasting, the computer of other networking is as terminating machine, to send to by network on other terminal computer at the shown B ultrasonic signal of patient's virtual B ultrasonic instrument at one's side, the doctor other at the acknowledge(ment) signal terminal computer will observe identical image with patient doctor at one's side simultaneously.

Claims (5)

1, a kind of computer virtual B ultrasonic instrument comprises the B ultrasonic control box that can connect Ultrasonic-B probe, it is characterized in that, described B ultrasonic control box has a usb interface module, can be connected with the USB PORT COM of the computer of being with display.
2, computer virtual B ultrasonic instrument according to claim 1 is characterized in that, described B ultrasonic control box uses connection cord line and the described compunication that meets the USB standard.
3, computer virtual B ultrasonic instrument according to claim 1 is characterized in that, described ultrasonic probe can be selected a kind of in following: linear array shape probe, sector probe and puncture are with probe.
4, computer virtual B ultrasonic instrument according to claim 1, it is characterized in that, described B ultrasonic control box comprises emission and the focus control door that is connected with the Ultrasonic-B probe socket, receive and the time-delay control gate, also comprise with described reception and time-delay control gate and be connected transmission voltage of signals/current converter successively, logafier, detection and depth compensation, the A/D conversion, programmable logic chip FPGA, USB single-chip microcomputer and USB gang socket, described programmable logic chip FPGA also respectively with described emission and focus control door, receive and the time-delay control gate, logafier, detection and depth compensation, the A/D conversion is connected with the USB single-chip microcomputer, realizes the logic control function of described B ultrasonic control box.
According to the described computer virtual B ultrasonic of claim 4 instrument, it is characterized in that 5, described USB single-chip microcomputer uses the PIC16C765 chip, will carry out the USB coding by the signal that described programmable logic chip FPGA transmits and send by cable gang socket to USB.
CN00260310U 2000-11-16 2000-11-16 Computer virtual B ultrasonic diagnostic apparatus Expired - Fee Related CN2460047Y (en)

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