CN104434198B - A kind of dual mode ultrasound main frame and applied to the ultrasonic probe on the ultrasonic main frame - Google Patents
A kind of dual mode ultrasound main frame and applied to the ultrasonic probe on the ultrasonic main frame Download PDFInfo
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- CN104434198B CN104434198B CN201310423727.6A CN201310423727A CN104434198B CN 104434198 B CN104434198 B CN 104434198B CN 201310423727 A CN201310423727 A CN 201310423727A CN 104434198 B CN104434198 B CN 104434198B
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Abstract
The present invention relates to a kind of dual mode ultrasound main frame, belong to electromedical equipment field, can support to work under CW patterns and PW pattern both of which, including transmitter module, receiving module, control module, judge module.The present invention adds continuous wave mode in the ultrasonic main frame of existing pulsed wave mode, continuous wave mode transmitting data and receive data be simultaneously, can continual detection signal, so as to reduce the loss of signal.By realizing that a kind of double mode ultrasonic main frame can be for detecting the position such as heart of human body, it is few to solve current probe pattern, the problem of insufficiency.
Description
Technical field
The present invention relates to technical field of medical instruments, more particularly to a kind of dual mode ultrasound main frame and applied to the ultrasound
Ultrasonic probe on main frame.
Background technology
In current electromedical equipment, supersonic sounding main frame is the clinical Medical Devices for being frequently necessary to use, wherein ultrasound
Probe is also a kind of the more commonly used accessory, and the species of probe has many kinds, typically there is big convex probe, and linear array probe, dimpling is visited
Head, phased array probe, intracavitary probe, blood oxygen probe, volume probe, fetal monitoring is popped one's head in, the species, these different spies such as electrocardio probe
Head has different functions, can check the different position of human body or internal organs.
Present medical personnel require more and more higher to the functional requirement of ultrasound, do not require nothing more than can be faster more accurate detection human body
Ill symptomses, also require that ultrasonic probe can adapt to detect increasingly wider human body.But visited at present in ultrasonic device
Survey pattern is single, it is impossible to switched.Human body is caused there are some positions to be that can not detect or detect inadequate by ultrasound
Accurately, the vascular effects of particularly ultrasound probe detection at present human body encephalic are not fine, while the gap of some ribs of human body
Too small, ultrasonic probe is not very convenient to the device and tissue detection in rib.
The content of the invention
To overcome drawbacks described above, the purpose of the present invention is to be that providing one kind can require that unrestricted choice is adjusted according to different
The ultrasonic main frame of mode of operation.
A kind of dual mode ultrasound main frame, the ultrasonic main frame can external ultrasonic probe, including transmitter module, receiving module, control
Molding block, judge module；
The judge module is used to judge the control instruction of input for continuous wave instruction or impulse wave instruction, and will determine that
As a result send to control module；
The Wave data of impulse wave and continuous wave is set in the control module, the control module is sent according to judge module
Judged result transfer corresponding Wave data and send to transmitter module；
The transmitter module receive corresponding Wave data and by Wave data be converted into corresponding driving voltage send to
Ultrasonic probe；
The receiving module receives the echo-signal from probe collection, and processing obtains data signal and data signal is defeated
Go out.
As an improvement, the dual mode ultrasound main frame also includes instruction input module, and the instruction input module is used
In input control instruction, the control instruction includes continuous wave control instruction and impulse wave control instruction.
Further, the dual mode ultrasound main frame also includes display module, and the display module is received from reception mould
The data signal of block is simultaneously shown.
Furthermore, the transmitter module includes driving chip and transmitting chip；
The driving chip, the control signal that receive and control module is launched is gone forward side by side, and there is provided high current and height for row buffering processing
Voltage is to transmitting chip；
The transmitting chip, transmitting continuous wave driving voltage or impulse wave driving voltage are to ultrasonic probe.
Further, five level are used during the transmitting chip transmitting continuous wave driving voltage；The transmitting chip
Three level are used during transmitting impulse wave driving voltage.
Further, the receiving module includes：
Signal demodulation unit, for docking number advanced row Beam synthesis of collecting mail, baseband signal is converted to by I/Q demodulation；
Signal amplification unit, the amplitude of signal is amplified to the amplitude of needs, is easy to the collection of rear class signal；
Signal gathering unit, for the differential signal collected to be converted into single-ended signal, and signal is turned by modulus
Parallel operation is converted to analog signal, then analog signal switched to for data signal, to be then transferred to display module and shown.
As an improvement, the ultrasonic probe uses single array element probe；The demodulating unit is specifically used
Mono signal multichannel is demodulated.
Further, the demodulating unit receives the echo-signal of single array element probe collection, through the first inductance, the first electric capacity
The normal phase input end of input difference amplifier afterwards, the inverting input of difference amplifier passes through the second capacitance connection to ground, difference
The positive output end of amplifier is by being connected to the positive phase input signal port of demodulator of PM signal PM, difference amplifier after first resistor
Reversed-phase output by being connected to the rp input signal port of demodulator, the frequency, demodulation frequency of the demodulator after second resistance
Input port crystal oscillator is connected by the 3rd electric capacity, second resistance, the demodulator signal output port is by the signal after processing
Issue next stage signal amplification unit.
A kind of dual mode ultrasound probe applied on dual mode ultrasound main frame, the ultrasonic probe connects including driving voltage
Receive module, echo-signal transmitter module, transmitting chip and receive chip；
The transmitting wafer receipt continuous wave driving voltage, launches continuous ultrasound probing wave；
The reception wafer receipt impulse wave driving voltage, launches impulse ultrasound probing wave；The reception chip is additionally operable to
Receive continuous ultrasound probing wave echo and pulse detection ripple echo；
The driving voltage receiving module is used to receiving the driving voltage that ultrasonic main frame is sent, and by continuous wave driving voltage
Transmit to transmitting chip, impulse wave driving voltage is transmitted to reception chip；
The echo-signal transmitter module is used to receive the continuous ultrasound probing wave and impulse ultrasound probing wave for receiving chip
Echo-signal, and above-mentioned echo-signal is sent to the ultrasonic main frame.
Further, the transmitting chip operating center frequency is 2MHz.
The present invention adds continuous wave mode, continuous wave mode transmitting data in the ultrasonic main frame of existing pulsed wave mode
With receive data be simultaneously, can continual detection signal, so as to reduce the loss of signal.By realizing a kind of probe
It is double mode can be for detecting the position such as heart of human body, it is few to solve ultrasonic host mode at present, the problem of insufficiency.
Brief description of the drawings
For ease of explanation, the present invention is described in detail by following preferred embodiments and accompanying drawing.
Fig. 1 is a kind of system block diagram of dual mode ultrasound main frame of the invention；
Fig. 2 is a kind of another system block diagram of dual mode ultrasound main frame of the invention；
Fig. 3 is a kind of dual mode ultrasound main frame transmitter module schematic diagram of the invention；
Fig. 4 is a kind of dual mode ultrasound main frame receiving module circuit theory diagrams of the invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The present invention provides a kind of dual mode ultrasound main frame, and this main frame can be operated in continuous wave mode（That is CW patterns, English
Literary full name Continuous Wave）, can also select to be operated in pulsed wave mode（That is PW patterns, English full name Pulse
Wave）.
Referring to Fig. 1, a kind of dual mode ultrasound system, mainly by probe 1, ultrasonic main frame 2 is constituted.
A kind of dual mode ultrasound main frame, the ultrasonic main frame can external ultrasonic probe 1, including transmitter module 21, receiving module
22nd, control module 23, judge module 24；
The judge module 24 is used to judge the control instruction of input for continuous wave instruction or impulse wave instruction, and will sentence
Disconnected result is sent to control module 23；
The Wave data of impulse wave and continuous wave is set in the control module 23, the control module 23 is according to judge module
24 judged results sent are transferred corresponding Wave data and sent to transmitter module 21；
The transmitter module 21 receives corresponding Wave data and Wave data is converted into corresponding driving voltage and sends
To ultrasonic probe 1；
The receiving module 22 receives the echo-signal from probe collection, and processing obtains data signal and by data signal
Output.
Referring to Fig. 2, the dual mode ultrasound main frame also includes instruction input module 25 and display module 26, the instruction
Input module 25 is used to input control instruction, and the control instruction includes continuous wave control instruction and impulse wave control instruction；Institute
Display module 26 is stated to receive the data signal from receiving module 22 and shown.
As shown in figure 3, transmitter module 21 is mainly the combinational circuit of two chips of driving chip and transmitting chip, complete high
Press the transmitting of pulse.
Transmitter module 21 can export ± 100V high-voltage pulse, while there is 2A high current.Support 5 level emissions, six
Individual passage output, these waveforms can be exported simultaneously, and waveform is continuous.Launch the electricity of chip transmitting under continuous wave mode
Corrugating is mainly square wave, and waveform is continuous waveform, and the level of emitting voltage 5, waveform requirements are more stable, shakes small.Transmitting
The level square wave of chip emission five needs prime to do one-level driving, and the present invention has newly increased driving chip, driving chip power reguirements
It is not high, ± 12V and+3.3V, while the control signal of input signal is CMOS level, 1.8V to 3.3V can.Control
Control signal is mainly carried out buffered by signal by being exported after driving chip to transmitting chip inside driving chip,
Because transmitting chip, which launches five level square waves, needs output high current and high voltage, do not buffered in prime, it is defeated not out of so big
Electric current and high voltage.Six signals after buffering control three couples of MOSFET of transmitting chip, and six MOSFET can be allowed continuous
On and off, to realize different waveforms.Transmitting chip needs High Voltage Power Supply, it is necessary to which ± 70, ± 30 power supply, that is, scheme simultaneously
Middle VPP2=+ 70V, VPP1=+ 30V, VNN2=- 70V, VNN1=- 30V,
Output signal has positive voltage and negative voltage, and positive voltage and negative voltage respectively have two kinds of voltage magnitudes, and the signal of output has
Positive voltage TX（A）, negative voltage TX（B）, the two voltages all use for transmitting.
The transmitted waveform that the method used at present is produced only has 3 level, and the transmitted waveform that method of the invention is produced has 5 electricity
Flat, the emitting voltage of 5 level, it is possible to reduce the distortion of signal allows probe to receive and is more nearly tissue or organ
Physiological signal, lifts the sensitivity of probe.
The method of the present invention can also realize 3 level emissions, and voltage VPP1 can be achieved into 3 level emissions with being connected to.
Receiving module 22 includes signal demodulation unit 221, signal amplification unit 222, signal gathering unit as shown in Figure 4
223。
The signal of 22 pairs of probe collections of receiving module is normally received and amplified signal；It can be controlled by receiving module 22
The multiple of echo-signal amplification processed, control demodulator is demodulated to echo-signal.The receiving transducer echo-signal of receiving module 22
The signal that transmitter module 21 is exported, and signal is amplified and filter etc. and handle.
Signal demodulation unit 221
Signal demodulation is the part that whole system is most important and is most difficult to, and synchronous signal demodulation is indispensable part.Cause
It is continuous for the signal that receiving circuit is received, the signal received is mingled with local oscillation signal（Frequency is higher）If, directly
Beam synthesis again is connect after being sampled to these signals, the controller of these signals is handled（FPFA, DSP etc.）Burden be difficult to hold
By.Therefore, it is necessary to dock the collection of letters number advanced row Beam synthesis, demodulate, become after baseband signal by I/Q, then carry out AD samplings
With follow-up signal transacting.
Such as Fig. 4 signal demodulation module, the chip of the present embodiment signal demodulation is selected specifically designed for continuous wave ultrasound wave beam
The binary channels demodulator of synthesis.It in one chip in be integrated with continuous wave analog beam synthesis pass through with I/Q demodulator circuits
Substitute the big corsspoint switch matrix and analog delay line used in traditional analog wave beam synthesis circuit, it is allowed in portable and electricity
Continuous-wave doppler function is provided in battery supply set.
Such as Fig. 4, annexation and implementation method to demodulator circuit are illustrated.Annexation is as follows：Signal is spy
Head is by the output signal after the echo-signal amplification of collection, and Signal signals come from the signal TP of the probe collection in Fig. 2
（R）, Signal is input to difference amplifier U1 normal phase input end, U1 anti-phase input by inductance SL2 after electric capacity C4
End is connected to ground GND by electric capacity C5；U1 positive output end is by being connected to demodulator of PM signal PM U2 RFxP ends after resistance R4
Mouthful, RFxP is the positive phase input signal port of demodulator, and U1 reversed-phase output is by being connected to U2 RFxN ends after resistance R5
Mouthful, RFxN is the rp input signal port of demodulator；After crystal oscillator X1 is by resistance R6, then by electric capacity C6 it is connected to U2's
4LOP ports, 4LOP is the input port of the frequency, demodulation frequency of demodulator；U2 output port has two, respectively IxxO and
QxxO, this two paths of signals amplitude is as frequency, and simply the phase of signal is different, and IxxO falls behind 90 degree of QxxO phases.IxxO
The signal amplification unit of rear stage is connected to QxxO.The implementation method to demodulator circuit is illustrated below：After probe amplification
The Signal signal components of output are more complicated, have noise signal, there is local oscillation signal, have the signals such as echo-signal, it is necessary to will not
The signal needed removes, and only leaves and takes echo-signal.Because echo-signal very little, it is difficult U2 collections and demodulates, so first using U1
Signal is amplified, while the original single-ended signal for collection of popping one's head in is converted into differential signal, the anti-interference energy of differential signal by U1
Power is stronger, more stable.U2 RFxP, RFxN pin is connected to after signal amplification by resistance R1, R2, uses, keeps away as current limliting
Exempt from circuit and cross senior general U2 to burn.The clock of the demodulation of binary channels demodulator uses external crystal-controlled oscillation, and external crystal-controlled oscillation X1 provides 2MHz's
Square wave, square wave is by being input to U2 4LOP ports after C6 electric capacity blockings.U2 system building is completed, and can carry out the solution of signal
Adjust, the signal amplification circuit to rear class will be exported after the primary signal demodulation for collection of popping one's head in.As long as this programme, which has, meets parameter（It is double
Passage integrated form I/Q is demodulated, out-put dynamic range：159dB/Hz, each passage output has the parameters such as 16 kinds of channel selectings）'s
Chip, can realize that the chip demodulated to signal can be used, and this programme is a kind of implementation of the present invention.
Signal amplification unit 222：
The amplitude of signal is mainly amplified to the amplitude of needs by signal amplifying part point, is easy to the collection of rear class signal.It is right
The amplification of signal is not only simple do and amplified, but signal is amplified with the circuit of multiple passages to substitute a passage
Circuit signal is amplified, faint small-signal is amplified, improve multiplication factor while, noise is also put simultaneously
Greatly;Multichannel front end without phase difference parallel signal amplify with processing circuit system to the output signal of same sensor at
Reason, noise does not have coherence, is cancelled, and signal is enhanced.Embodiments of the invention have selected 2 passages, but are not limited to 2
Individual passage, theoretical upper channel is more, and signal to noise ratio is higher.
Such as Fig. 4, the signal after demodulation, in-phase signal I and orthogonal signalling Q outputs are exported with electric current, are so easy to summation.
Such as Fig. 4, annexation and realization principle are illustrated, annexation is as follows：There is two paths of signals, first via signal is defeated from U2
The IxxO gone out is connected to operational amplifier U3 inverting input, while IxxO is connected to U3 after resistance R7 and electric capacity C7
Output end V1, U3 normal phase input end be connected to ground GND, U3 output end V1 is directly connected to the accurate computing of next stage circuit
Amplifier U7, while U3 output end V1 is connected to U5 inverting input by resistance R9, operational amplifier U5 positive is defeated
Enter end and ground GND is connected to by resistance R11, resistance R13 is connected across between U5 inverting input and U5 output end V3, U5
Output end V3 be connected to next stage circuit U7 inverting input；Second road signal, computing is connected to from the U2 QxxO exported
Amplifier U4 inverting input, while QxxO is after resistance R8 and electric capacity C8, is connected to U4 output end V2, U4 positive
Input is connected to ground GND, and U4 output end V2 is directly connected to next stage circuit precision operational-amplifier U8, while U4's is defeated
Go out to hold V2 to be connected to operational amplifier U6 inverting input by resistance R10, U6 normal phase input end is connected by resistance R12
It is connected across to ground GND, resistance R14 between U6 inverting input and U6 output end V4, U6 output end V4 is connected to next
The inverting input of level circuit U 8；The principle that demodulation is realized is illustrated below：U2 output i/q signals pass through HDR
Current Voltage（I-V）Converter U3, U4 convert electrical current into voltage, and the two-way voltage converted is V1, V2, V1, V2 points
Not Jing Guo resistance R6, R8, R6, R8 reduce the electric current in circuit, reduce heating, after V1, V2 are respectively through resistance R6, R8, input
To operational amplifier U5, U6 end of oppisite phase, TL064 is mainly amplified to signal, and the output voltage after amplification is V3, V4.
What amplifying circuit was selected inside signal amplification module is series voltage negtive backword, and while signal is amplified, signal is turned respectively
Exported for two paths of signals, V1, V3 and V2, V4 two are to signal.The I-V of this programme converts chip U3, U4 and amplification chip U5
General operational amplifier, is not limited to the use of these chips.
Signal gathering unit 223：
Differential signal is mainly converted to single-ended signal by signal acquisition part, and by signal by analog-digital converter, will
Analog signal switchs to for data signal, and data signal storage and handling more facilitates, and the digital data transmission after processing is to display
Module MCU.The annexation and implementation method to signal acquisition circuit are illustrated below.First annexation is illustrated：
U7 normal phase input end IN+ is connected to the output end of the U3 in signal amplification unit 222 in such as Fig. 4, signal gathering unit 223
The output end V3, resistance R15 that V1, U7 inverting input IN- are connected to the U5 in 222 signal amplification units are connected across U7's
Between GR1 and GR2, GR1 and GR2 are multiplication factor control port, and the size of the resistance between GR1 and GR2 is determined
The multiplication factor for the amplifying circuit that U7 is constituted.U7 output end V5 is connected to analog-digital converter U9 Data1 data ports, and U9's is defeated
Exit port A0, A1 ... A15 is connected to display module 26；U8 normal phase input end IN+ is connected in 222 signal amplification units
U4 output end V2, U8 inverting input IN- are connected to the output end V4 of the U6 in 222 signal amplification units, resistance R16 across
Be connected between U8 GR1 and GR2, GR1 and GR2 are multiplication factor control port, the resistance between GR1 and GR2 it is big
The small multiplication factor for determining the amplifying circuit that U8 is constituted.U8 output end V6 is connected to analog-digital converter U10Data2 data
Mouthful, U10 output port A16, A17 ... A31 is connected to display module 26；Realization principle is illustrated below：Pass through signal
Signal after amplifying unit 222 amplifies is that differential signal is easy to data acquisition, it is necessary to which differential signal is switched into single-ended signal, is selected
Differential signal is converted to single-ended signal by U7, while U7 can further be amplified signal, R15, R16 determine U7's
Multiplication factor.The bigger multiplication factor of R15, R16 resistance is smaller, there is amplifying circuit inside U7, and the multiple G of U7 amplifications=（49.9KΩ/
R12）The multiple G of+1, U8 amplification=（49.9KΩ/R13）+1.Output voltage point after signal is handled by operational amplifier U7, U8
Wei not V5, V6.Analog-digital converter U9, U10 serial input, parallel output, 14 ADC, sampling rate 1MSPS, because collection
It is the baseband signal after demodulation, frequency can meet requirement than relatively low using precision and sample rate.U9, U10 are except power supply
Vcc and ground GND are outer, it is necessary to which controller is controlled it, and U9, U10 control signal can be shared, CS in such as Fig. 4, Busy,
CLK control signals control U9, U10 simultaneously, and the common IO of controller can control CS, Busy, CLK.Port can so be saved.
V5, V6 after U9, U10 processing, by U9, U10 output port D0, D1 ..., D30, D31 export and give display module MCU.
U9, U10 of this programme selection are also more common ADC, as long as sampling precision and sample rate meet the requirements, so that it may so that
With such as sample rate is more than 500KHz, and sampling precision needs that more than 14bit requirement can be met.If U9, U10 are to select N
Bit ADC, then the data transmission mouth of U9, U10 and display module just have D0, D1 ... Dn.
Digital data transmission to display module 26, corresponding image is completed by display module 26 by analog-digital converter U9, U10
The work such as processing, clinician can observe the tissue or organ that probe is detected by display.The present invention is mainly
The method and device that a kind of adjustable pen probe of mode of operation is applied to ultrasound is completed, primary signal is gathered by popping one's head in, most
Afterwards by digital data transmission to display module 26, the present embodiment has completed this invention.
A kind of ultrasonic probe 1 applied on dual mode ultrasound main frame, the ultrasonic probe 1 includes driving voltage and receives mould
Block, echo-signal transmitter module, transmitting chip and reception chip；
The transmitting wafer receipt continuous wave driving voltage, launches continuous ultrasound probing wave；
The reception wafer receipt impulse wave driving voltage, launches impulse ultrasound probing wave；The reception chip is additionally operable to
Receive continuous ultrasound probing wave echo and pulse detection ripple echo；
The driving voltage receiving module is used to receiving the driving voltage that ultrasonic main frame is sent, and by continuous wave driving voltage
Transmit to transmitting chip, impulse wave driving voltage is transmitted to reception chip；
The echo-signal transmitter module is used to receive the continuous ultrasound probing wave and impulse ultrasound probing wave for receiving chip
Echo-signal, and above-mentioned echo-signal is sent to the ultrasonic main frame.
When probe is operated in continuous wave mode, driving voltage receiving module receives the continuous wave excitation from ultrasonic main frame
Voltage, and continuous wave driving voltage is sent to transmitting chip, transmitting chip constantly produces continuous ultrasonic, continuous ultrasonic
The different tissues and organ back reflection that signal reaches human body are returned, and are received chip and are constantly received the echo that ultrasonic reflections are returned
Signal, by echo-signal is to echo signal receiving module enhanced processing and transmits to ultrasonic main frame.During emission pulse ultrasonic, hair
It is that timesharing is carried out to send data and receive data, receives chip and serves not only as producing the chip of ultrasonic wave while also serving as receiving super
The chip of sound wave；When probe is operated in pulsed wave mode, driving voltage receiving module receives the impulse wave from ultrasonic main frame
Driving voltage, and impulse wave driving voltage is transmitted to chip is received, receive chip and produce pulse ultrasonic wave, sent out from chip is received
The different tissues and organ back reflection that the pulse ultrasonic wave signal seen off reaches human body are returned, the pulse echo letter reflected
Number gathered to echo signal receiving module enhanced processing and transmitted to ultrasonic main frame by reception chip.
Ultrasonic probe 1 of the present invention is using single array element probe.
The center operating frequency of the probe of the invention is 2MHz；Centre frequency is low, and probe penetration capacity is strong, can detect more
Deep depth, can detect the more internal organs of human body or position.
Whether which kind of mode of operation, is required for echo signal reception module to receive the echo-signal of probe collection
And amplification, the signal for collection of popping one's head in is extremely complex, is mingled with many noise signals, ultrasonic probe 1 needs to extract useful echo
Signal, and certain amplification and filtering is carried out to echo-signal, be easy to behind processing to signal.
The present embodiment is by described above, and the present invention not only allows probe to realize the function of pulsed wave mode, moreover it is possible to allow spy
Head realizes the function of continuous wave mode, and one kind probe can realize both of which function.In a continuous wave mode, the array element of half is used
In transmitting, the array element of half is used to receive, and realizes transmitting and receives separately, transmitting data and the work(for receiving data progress simultaneously
Can, continual detection signal reduces the loss of signal, adds the continuous wave mode of probe, can be for detection human body
The positions such as heart, are solved under prior art, and probe pattern is few, the problem of insufficiency.
The transmitted waveform that the present invention pops one's head in is the square wave of 5 level, and the square wave of 3 level, the excitation of 5 level are used at present
Signal can preferably produce echo-signal, allow probe to receive the physiological signal for being more nearly tissue or organ.
The present invention is by realizing the probe of single array element, the less volume of probe, on the premise of probe function is met, solution
The problem of certainly probe carries inconvenient, and the probe of this small volume can put the blood for detecting encephalic conveniently and quickly
Pipe, while the center probe working frequency of single array element is 2MHz, centre frequency is low, and probe penetration capacity is strong, can detect deeper
Depth, the more internal organs of human body or position can be detected.The chip of single array element is carried out by multiple passages to signal simultaneously
Amplification, the circuit system amplified and handled without phase difference parallel signal using multichannel front end, to the output signal of same sensor
Handled, noise does not have coherence, be cancelled, and signal is enhanced, improves the driving force of circuit and the noise of signal
Than.
The operating center frequency that the present invention pops one's head in is 2MHz, than relatively low, and the low probe penetration capacity of centre frequency is strong, can be with
Deeper depth is detected, the more internal organs of human body or position can be detected, while the use of the chip of same array element being a thing
Manage passage, offset by this physical channel as noise reference passage be coupled into come noise, raising antijamming capability.It is logical
Cross the adjustable ultrasonic pen probe of invention mode of operation, solve clinically probe species it is few, the incomplete problem of check point,
This probe can continuously be sent simultaneously, without lossing signal, continual detection signal.By producing in 2MHz
Heart working frequency so that the penetration capacity of probe is strong, sensitivity is high, good reliability.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Interior made any modifications, equivalent substitutions and improvements of god and principle etc., should be included in the interior of protection scope of the present invention.
Claims (10)
1. a kind of dual mode ultrasound main frame, the ultrasonic main frame can external ultrasonic probe, it is characterised in that including：Transmitter module, connect
Receive module, control module, judge module；
The judge module is used to judge the control instruction of input for continuous wave instruction or impulse wave instruction, and will determine that result
Send to control module；
The Wave data of impulse wave and continuous wave is set in the control module, the control module is according to sentencing that judge module is sent
Disconnected result is transferred corresponding Wave data and sent to transmitter module；
The transmitter module receives corresponding Wave data and Wave data is converted into corresponding driving voltage and sends to ultrasound
Probe；
The receiving module receives the echo-signal from probe collection, and processing obtains data signal and exports data signal.
2. a kind of dual mode ultrasound main frame as claimed in claim 1, it is characterised in that described also including instruction input module
Instruction input module is used to input control instruction, and the control instruction includes continuous wave instruction and impulse wave instruction.
3. a kind of dual mode ultrasound main frame as claimed in claim 2, it is characterised in that also including display module, the display
Module receives the data signal from receiving module and shown.
4. a kind of dual mode ultrasound main frame as claimed in claim 3, it is characterised in that the transmitter module includes driving chip
And transmitting chip；
The driving chip, the control signal that receive and control module is launched is gone forward side by side, and there is provided high current and high voltage for row buffering processing
To transmitting chip；
The transmitting chip, transmitting continuous wave driving voltage or impulse wave driving voltage are to ultrasonic probe.
5. a kind of dual mode ultrasound main frame as claimed in claim 4, it is characterised in that the transmitting chip transmitting continuous wave swashs
Five level are used when encouraging voltage；Three level are used during the transmitting chip transmitting impulse wave driving voltage.
6. a kind of dual mode ultrasound main frame as claimed in claim 5, it is characterised in that the receiving module includes：
Signal demodulation unit, for docking number advanced row Beam synthesis of collecting mail, baseband signal is converted to by I/Q demodulation；
Signal amplification unit, the amplitude of signal is amplified to the amplitude of needs, is easy to the collection of rear class signal；
Signal gathering unit, for the differential signal collected to be converted into single-ended signal, and passes through analog-digital converter by signal
Be converted to analog signal, then analog signal switched to for data signal, to be then transferred to display module and shown.
7. a kind of dual mode ultrasound main frame as claimed in claim 6, it is characterised in that the ultrasonic probe uses Dan Zhen
Member probe；The demodulating unit specifically uses the demodulation of mono signal multichannel.
8. a kind of dual mode ultrasound main frame as claimed in claim 7, it is characterised in that the demodulating unit receives single array element and visited
The echo-signal of head collection, the normal phase input end of input difference amplifier after the first inductance, the first electric capacity, difference amplifier
Inverting input is by the second capacitance connection to ground, and the positive output end of difference amplifier after first resistor by being connected to signal
The positive phase input signal port of demodulator, the reversed-phase output of difference amplifier is by being connected to the anti-of demodulator after second resistance
Phase input signal port, the input port of the frequency, demodulation frequency of the demodulator connects crystal oscillator, institute by the 3rd electric capacity, second resistance
State demodulator signal output port and the signal after processing is issued into next stage signal amplification unit.
9. a kind of ultrasonic probe being applied to as described in claim 1 to 8 any one on ultrasonic main frame, it is characterised in that institute
Ultrasonic probe is stated including driving voltage receiving module, echo-signal transmitter module, transmitting chip and chip is received；
The transmitting wafer receipt continuous wave driving voltage, launches continuous ultrasound probing wave；
The reception wafer receipt impulse wave driving voltage, launches impulse ultrasound probing wave；The reception chip is additionally operable to receive
Continuous ultrasound probing wave echo and impulse ultrasound probing wave echo；
The driving voltage receiving module is used to receive the driving voltage that ultrasonic main frame is sent, and continuous wave driving voltage is transmitted
To transmitting chip, impulse wave driving voltage is transmitted to reception chip；
The echo-signal transmitter module is used to receive the continuous ultrasound probing wave echo-signal and impulse ultrasound that receive chip to visit
Ripple echo-signal is surveyed, and above-mentioned echo-signal is sent to the ultrasonic main frame.
10. a kind of ultrasonic probe as claimed in claim 9, it is characterised in that the transmitting chip operating center frequency is
2MHz。
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| CN104887269B (en) * | 2015-05-26 | 2018-06-08 | 广州三瑞医疗器械有限公司 | A kind of wearable fetal monitor |
| CN105433984A (en) * | 2015-12-16 | 2016-03-30 | 徐州市凯信电子设备有限公司 | Mechanical linear scanning high-frequency ultrasonic diagnosis device |
| CN109283258B (en) * | 2017-07-19 | 2020-07-17 | 中国科学院声学研究所 | Detection system based on ultrasonic phased array |
| CN110075424A (en) * | 2018-01-26 | 2019-08-02 | 东莞市伊人美电子有限公司 | A kind of electronics cosmetic apparatus with automatic information identification function |
| CN110037742B (en) * | 2019-04-08 | 2024-02-20 | 深圳市贝斯曼精密仪器有限公司 | Ultrasonic blood flow detection probe and detection device |
| CN112043310B (en) * | 2020-09-07 | 2021-12-03 | 电子科技大学 | Capacitive coupling type ultrasonic imaging front-end transmitting and receiving circuit |
| CN113925534A (en) * | 2021-10-28 | 2022-01-14 | 苏州圣泽医疗科技有限公司 | Ultrasonic Doppler probe and shell thereof |
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| JP2004057262A (en) * | 2002-07-25 | 2004-02-26 | Hitachi Medical Corp | Ultrasonic diagnostic apparatus |
| CN101163986A (en) * | 2005-04-18 | 2008-04-16 | 皇家飞利浦电子股份有限公司 | Portable ultrasonic diagnostic imaging system with docking station |
| CN100525713C (en) * | 2005-06-10 | 2009-08-12 | 深圳迈瑞生物医疗电子股份有限公司 | Method for extracting envelope curve of sound spectrogram |
| CN101301212B (en) * | 2007-05-11 | 2011-08-17 | 深圳迈瑞生物医疗电子股份有限公司 | Method for real-time estimating Doppler parameter and device |
| CN101336830B (en) * | 2007-07-03 | 2012-07-04 | 深圳迈瑞生物医疗电子股份有限公司 | Orthogonal Doppler signal gap filling method and device for ultrasonic dignosis imaging |
| CN101461720B (en) * | 2007-12-18 | 2012-01-25 | 深圳迈瑞生物医疗电子股份有限公司 | Method and device for regulating measuring range of movement velocity based on spectral Doppler |
| CN102309337B (en) * | 2010-07-06 | 2013-11-20 | 北京东方惠尔图像技术有限公司 | Data direct-input type color ultrasonic imaging system |
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