CN104208822B - Expert system based on ultrasonic physiotherapy equipment - Google Patents
Expert system based on ultrasonic physiotherapy equipment Download PDFInfo
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- CN104208822B CN104208822B CN201410174886.1A CN201410174886A CN104208822B CN 104208822 B CN104208822 B CN 104208822B CN 201410174886 A CN201410174886 A CN 201410174886A CN 104208822 B CN104208822 B CN 104208822B
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Abstract
The invention discloses a kind of expert system based on ultrasonic physiotherapy equipment, including sonicator and Multimode Control module, wherein, sonicator includes power supply module, human-computer interaction module, main control module, DDS module, power amplifier module, treatment head module, frequency tracking module.Each ultrasonic therapeutic head for the treatment of head is combined by 25 ultrasonic launching heads, and each emitting head is by main control module independent control.Multimode Control module includes the expert treatment side pre-set, can be called by human-computer interaction module, and expert treats policy and different frequencies or combination of frequency, watt level, treatment time parameter are pre-seted to different diseases.Treatment head module has multiple treatment heads, and has adsorption structure, and the adsorption element for the treatment of head is the adsorption cover of approximate cone-shape.Described expert, which treats, to carry out different settings to the output frequency and power of each ultrasonic launching head, to cause the depth around the effect of center therapentic part, section, cross-sectional sizes to optimize.
Description
Technical field
The present invention relates to a kind of Intelligence Ultrasound physiotherapy equipment, and in particular to one kind is used for organic cardiovascular patient, motion
The high-tech ultrasound physiotherapy equipment of the traumatic external physical treatment of patient.
Background technology
Ul-trasonic irradiation can produce certain biological effect in tissue, such as mechanical effect, thermogenetic effect, cavitation effect
Deng certain therapeutic purposes, that is, so-called ultrasonic physiotherapy can be reached using these effects.
The pad value of ultrasonic wave in biological tissues is with the increase of frequency near-linear, i.e., frequency is bigger, and attenuation coefficient is got over
Greatly, decay faster, it is different that different supersonic frequencies will cause ultrasonic signal to enter human depth；On the other hand, it is excessive
Ultrasonic Radiation human body can be damaged, the ultrasonic signal using various dose is considered as different therapentic parts.
The more popular most table structure of sonicator is similar on domestic market, and it is low automaticity to be present, behaviour
Make it is numerous and diverse, can adjust acoustic power range it is narrow, the common defects such as automatic protection functions are weak.
Ultrasonic physiotherapy equipment is more at present using single-frequency, the technical scheme of fixed frequency, this frequency be it is fixed, it is immutable
's.Its therapentic part of single-frequency is limited, when patient needs multiple site treatments, it is necessary to which other equipment is completed.Controlling
During treatment, due to differences such as temperature, environment, the resonant frequency of ultrasonic therapeutic head is caused to change, due to current ultrasound
Modality does not possess automatic frequency tracking function, will frequency of occurrences imbalance, so as to cause impedance mismatching, reduce efficiency,
Serious cisco unity malfunction.
The existing most trivial operations of ultrasonic physiotherapy equipment, without expert treatment side function, therapeutic frequency is mostly single and fixed
1MHz or 3MHz, output acoustic power is within 2W/cm2, single therapy head, and treatment head effective area is smaller.Accidental double frequency
The physiotherapy equipment of double treatment heads, effective treatment area difference of itself 1MHz and 3MHz treatment head is larger, and output acoustic power is smaller, does not have
Standby automatic frequency tracking function.
The content of the invention
To overcome deficiency of the prior art, it is an object of the invention to provide the ultrasound of a kind of intelligent double-frequency or multi-frequency
Physiotherapy equipment, the Intelligence Ultrasound physiotherapy equipment it is possible to prevente effectively from the prior art the shortcomings that.
In order to solve the above-mentioned technical problem, above-mentioned purpose is realized, the present invention is achieved through the following technical solutions：
A kind of Intelligence Ultrasound physiotherapy equipment, including power supply module, human-computer interaction module, main control module, DDS module, power amplifier mould
Block, treatment head module, frequency tracking module, and/or temperature control modules；
The power supply module includes 220V exchanges and turns direct current 15V power modules, and the 220V exchanges turn direct current 15V power supplys
Module is connected to a level switch module and push-pull power amplifier circuit；220V exchanges, which will turn direct current 15V power modules, to be exchanged
220V is converted into direct current 15V and is used to provide power supply to push-pull power amplifier circuit；Level switch module, it is by direct current 15V voltage conversions
Various voltages needed for main control module and human-computer interaction module.In another embodiment, power supply module may include chargeable
Polymer battery.
The human-computer interaction module includes touch-screen and state display lamp；Various treatment ginsengs can be set by touch-screen
Number, while expert treatment side function is may call upon, it is easy to operate, directly perceived, succinct；Status indicator lamp is used for real-time display physiotherapy equipment
Running status.
The main control module includes a microprocessor, and the microprocessor is connected with a DDS circuit, duty cycle adjustment electricity
Road, digital potentiometer, frequency error factor and match circuit, phase difference detecting circuit, temperature sampling circuit and thermal-shutdown circuit；It is micro-
The treatment parameter that processor is mainly set according to user, in the range of the total technical index of equipment, control ultrasonic therapy head mould
Block output meets desired ultrasonic signal, and stabilizes it, reliably works；
The DDS module includes a DDS and circuit occurs, and the output end that circuit occurs for the DDS connects LPF electricity
Road, the output end of the low-pass filter circuit connect a duty ratio adjusting circuit, the duty ratio adjusting circuit and microprocessor
It is connected；DDS occurs circuit and is used to produce original ultrasonic excitation signal, realizes there is frequency using Direct Digital Frequency Synthesizers
Rate is easy to adjust, high resolution, the advantages that frequency switching time is short, output phase is continuous, totally digitilized and easy to control；Low pass
Filter circuit is used to filter out the harmonic wave interference that circuit output occurs for DDS, and harmonic wave interference selects 7 ranks bar essentially from reference clock
Te Wozi low pass filters, butterworth filter has most flat amplitude versus frequency characte in passband, and rate of decay compares
It hurry up；Duty ratio adjusting circuit is used for the dutycycle for controlling output ultrasonic wave signal, and microcontroller is by controlling duty cycle adjustment electric
Road adjusts the dutycycle of ultrasonic excitation signal, so as to realize the control to exporting ultrasonic signal dutycycle.
Described power amplifier module includes one-level amplifying circuit, the in-phase input end connection dutycycle of the one-level amplifying circuit
The output end of circuit is adjusted, realizes and the pumping signal after duty ratio modulation is tentatively amplified；The one-level amplifying circuit
Inverting input connects a digital potentiometer, and the size of inverting resistance is accessed by adjusting, and controls the size of output signal, warp
Later continue amplification with the final control realized to treating intensity, described digital potentiometer with microprocessor to be connected, the one-level
The output end connection second amplifying circuit of amplifying circuit, the second amplifying circuit output end connect a push-pull power amplifier circuit；DDS
Pumping signal caused by generation circuit is very faint, it is necessary to could drive ultrasonic transducer by power amplification；One-level amplifying circuit
The preliminary amplification to pumping signal is realized, second amplifying circuit is further amplified to the output of one-level amplifying circuit, exports several W
Power, finally it is amplified again by push-pull power amplifier circuit, power output drive signal, promotes transducer work；Microcontroller
By the multiplication factor for controlling one-level power amplifier（End of oppisite phase accesses resistance sizes）, to realize the adjustment to power output.
The treatment head is one or more, and preferably 2-8 is individual, and has adsorption element, for treatment head absorption to be existed
Therapentic part.Adsorption element is the adsorption cover of approximate cone-shape, and binding domain can be circular or ellipse.Made by suction function
Ultrasonic therapeutic head and therapentic part close contact, and the work for the treatment of head and human body can be regulated and controled by adjusting the size of absorption affinity
Use pressure.
Each ultrasonic therapeutic head is combined by 2-5 ultrasonic launching head, and each emitting head is independently controlled by main control module
System, the area of each emitting head is 1- 2cm2,.Multiple emitting heads are combined into the shapes such as yi word pattern, polygon, right-angled intersection.
The treatment head module includes a frequency error factor and match circuit, the input of the frequency error factor and match circuit
Connect the output end of push-pull power amplifier circuit；The input of the frequency error factor and match circuit is also connected with microprocessor；The frequency
Rate switching is connected a transducer with the output end of match circuit；The effect of frequency error factor and match circuit has two：First, it is used for
The switching of multiple centre frequencies is realized, such as 1MHz, 2MHz, 3MHz；Second, impedance matching, makes transducer be operated in series resonance
Pure resistance state, improve the efficiency of equipment；Transducer is used for electric energy（Ultrasound drive signals）It is converted into mechanical energy（Ultrasonic wave）Output.
Echo transducer can be provided with the treatment head, to monitor the transmission depth of focus of ultrasound, is easy to user
Debugged, and then select appropriate therapeutic frequency.
The frequency tracking module includes a current-voltage sampling circuit, and the input of the current-voltage sampling circuit connects
Connect transducer；The output end of the current-voltage sampling circuit connects a phase difference detecting circuit, the phase difference detecting circuit
Output end connection microcontroller；Current-voltage sampling circuit is used for the phase size for obtaining voltage and current in transducer；Phase
Difference detecting circuit is used to judging the phase difference of voltage and current signal, and microcontroller adjusts frequency according to the size of phase difference, from
And realize frequency from motion tracking.
The temperature control modules include a temperature sampling circuit, the temperature sampling circuit connection thermal-shutdown circuit and
Microcontroller；Temperature sampling circuit uses thermistor, in ultrasonic therapy head module, close to transducer, microprocessor
After collecting temperature, judge whether the secure threshold more than setting, if overtemperature, control thermal-shutdown circuit cut-out output, it is ensured that
User's safety.
The described microprocessor of described level switch module connection, described 220V exchanges turn direct current 15V power modules
Connect push-pull power amplifier circuit.
The touch-screen and status indicator lamp are connected on described microcontroller.
Multimode Control module includes the expert treatment side pre-set, can be called by human-computer interaction module, and expert treats
Policy pre-sets different frequencies or combination of frequency, watt level, treatment time parameter to different diseases.Described expert treats
Different settings can be carried out to the output frequency and power of each ultrasonic launching head, to act on around center therapentic part
Depth, section, cross-sectional sizes optimize.Such as, different for the depth of required treatment, ultrasonic set of frequency is different,
3.5MHz frequencies are adapted to 0.5cm or so treatment depth, and 2MHz frequencies are adapted to 1.5cm or so treatment depth, 1MHz frequencies
It is adapted to 2.5 cm or so treatment depth.For the depth bounds of lesions position, different emitting heads can be set and use different frequency
Combination treated.Treatment cross-sectional sizes coordinate the watt level of different emitting heads to be adjusted.
Compared with prior art, the invention has the advantages that：
（1）Output ultrasonic wave can have multiple centre frequencies, and the continuously adjustabe in the range of 0.5-3.5MHz, exportable company
Continuous ripple and impulse wave, impulse waveform dutycycle 10-100% is adjustable, multiple treatment head outputs, easy to use；Can produce it is multiple in
The ultrasonic excitation signal of frequency of heart, and the continuously adjustabe in the range of 0-3.5MHz, continuous wave and impulse waveform, arteries and veins can be exported
It is adjustable to rush waveform duty cycle 10-100%, minute treatment time 0-30 is adjustable；（2）Ultrasonic therapeutic head effective radiating area is 3-9
Cm2, preferably 5cm2, effective output sound intensity≤3W/cm2；Output acoustic power is high, and user's selectable range is big；Ultrasonic therapeutic head
With multiple, multiple positions can be carried out while treated；（3）With automatic frequency tracking function, always work in transducer humorous
Shake near a little, improve device efficiency and user's comfort level；(4) on-line temperature monitoring, overheat protector function；According to use pair
The difference of elephant, temperature safety threshold value can be finely adjusted, improve therapeutic effect；（5）With expert treatment side function, using touch
Screen carries out man-machine interaction, simply, conveniently, intuitively.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
The embodiment of the present invention is shown in detail by following examples and its accompanying drawing.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the overall framework figure of the present invention.
Fig. 2 is the Multimode Control function structure chart of the present invention.
Fig. 3 is the circuit theory diagrams of the DDS module of the present invention.
Fig. 4 is the circuit theory diagrams of the power amplifier module of the present invention.
Fig. 5 is the circuit theory diagrams of the treatment head module of the present invention.
Fig. 6 is the circuit theory diagrams of the frequency tracking module of the present invention.
Fig. 7 is the circuit theory diagrams of the frequency tracking module of the present invention.
Embodiment
The technology implementation process of the present invention is described further with reference to the accompanying drawings and examples.
Embodiment 1：
It is shown in Figure 1, a kind of intelligent double-frequency ultrasound physiotherapy equipment, including power supply module 1, human-computer interaction module 2, master control mould
Block 3, DDS module 4, power amplifier module 5, treatment head module 6, frequency tracking module 7 and temperature control modules 8.The power supply module 1
Turn direct current 15V power modules 101 including 220V exchanges, the 220V exchanges turn direct current 15V power modules 101 and are connected with an electricity
Flat modular converter 102；220V exchanges turn direct current 15V power modules 101 alternating current 220V are converted into direct current 15V to be used for recommending work(
Discharge the offer of road 503 power supply；Level switch module 102, it is main control module 3 and human-computer interaction module 2 by direct current 15V voltage conversions
Required various voltages.
The human-computer interaction module 2 includes touch-screen 201 and state display lamp 202；It can be set respectively by touch-screen 201
Kind treatment parameter, such as treatment time, therapeutic frequency, treatment intensity and dutycycle etc.；Expert is may call upon simultaneously treats Fang Gong
Can, it is easy to operate, directly perceived, succinct；Status indicator lamp 202 is used for the running status of real-time display physiotherapy equipment.
The main control module 3 includes a microprocessor 301, and the microprocessor 301 is connected with a DDS circuit 401, duty
Than regulation circuit 403, digital potentiometer 504, frequency error factor and match circuit 601, phase difference detecting circuit 702, temperature sampling
Circuit 801 and thermal-shutdown circuit 802；The treatment parameter that microprocessor is mainly set according to user, in the general technical of equipment
In indication range, control ultrasonic therapy head module output meets desired ultrasonic signal, and stabilizes it, reliably works.
The DDS module 4 includes a DDS and circuit 401 occurs, and the output end that circuit 401 occurs for the DDS connects a low pass
Filter circuit 402, the output end of the low-pass filter circuit 402 connect a duty ratio adjusting circuit 403, the duty cycle adjustment
Circuit is connected with microprocessor 301；DDS occurs circuit 401 and is used to produce original ultrasonic excitation signal, using Direct Digital frequency
Rate synthesizer realizes, have frequency is easy to adjust, high resolution, frequency switching time is short, output phase is continuous, it is totally digitilized and
The advantages that easy to control；Low-pass filter circuit 402 is used to filter out the harmonic wave interference that circuit output occurs for DDS, and harmonic wave interference is main
From reference clock, 7 rank Butterworth lowpass filters are selected, butterworth filter has most flat width in passband
Frequency characteristic, and rate of decay is than very fast；Duty ratio adjusting circuit 403 is used for the dutycycle for controlling output ultrasonic wave signal, micro-control
Device 301 processed is by controlling duty ratio adjusting circuit 403 to adjust the dutycycle of ultrasonic excitation signal, so as to realize to output ultrasound letter
The control of number dutycycle.
Described power amplifier module 5 includes one-level amplifying circuit 501, and the in-phase input end connection of the one-level amplifying circuit accounts for
The empty output end than adjusting circuit 403, realize and the pumping signal after duty ratio modulation is tentatively amplified；The one-level amplification
The inverting input of circuit connects a digital potentiometer 504, and the size of inverting resistance is accessed by adjusting, and controls output signal
Size, by follow-up amplification with the final control realized to treating intensity, described digital potentiometer 504 and microprocessor phase
Connect 301, the output end connection second amplifying circuit 502 of the one-level amplifying circuit, the output end of second amplifying circuit 502 connects
Connect a push-pull power amplifier circuit 503；It is very faint, it is necessary to could be driven by power amplification that pumping signal caused by circuit 401 occurs for DDS
Dynamic ultrasonic transducer；One-level amplifying circuit 501 realizes the preliminary amplification to pumping signal, and second amplifying circuit 502 is put to one-level
Big circuit output is further amplified, and is exported a few W power, is finally amplified again by push-pull power amplifier circuit 503, output work
Rate drive signal, promote transducer work；Microcontroller 301 is by controlling the multiplication factor of one-level power amplifier（End of oppisite phase access electricity
Hinder size）, to realize the adjustment to power output.
The treatment head module 6 includes a frequency error factor and match circuit 601, the frequency error factor and match circuit 601
Input connection push-pull power amplifier circuit 503 output end；The input of the frequency error factor and match circuit is also connected with micro- place
Manage device 301；The frequency error factor is connected a transducer 602 with the output end of match circuit 601；Frequency error factor and match circuit
601 effect has two：First, the switching for realizing multiple centre frequencies；Second, impedance matching, is operated in transducer 602
The pure resistance state of series resonance, improve the efficiency of equipment；Transducer 602 is used for electric energy（Ultrasound drive signals）It is converted into mechanical energy
（Ultrasonic wave）Output.
The frequency tracking module 7 includes a current-voltage sampling circuit 701, the current-voltage sampling circuit 701
Input connects transducer 602；The output end of the current-voltage sampling circuit 701 connects a phase difference detecting circuit 702, institute
State the output end connection microcontroller 301 of phase difference detecting circuit 702；Current-voltage sampling circuit 701 is used to obtain transducer
The phase size of middle voltage and current；Phase difference detecting circuit 702 is used for the phase difference for judging voltage and current signal, microcontroller
301 according to the size of phase difference, adjusts frequency, so as to realize frequency from motion tracking.
The temperature control modules 8 include a temperature sampling circuit 801, and the temperature sampling circuit 801 connects excess temperature and protected
Protection circuit 802 and microcontroller 301；Temperature sampling circuit 801 uses thermistor, in ultrasonic therapy head module, leans on
Nearly transducer, after microprocessor collecting temperature, judge whether the secure threshold more than setting, if overtemperature, control overheat protector
The cut-out output of circuit 802, it is ensured that user's safety.
Described level switch module 102 connects described microprocessor 301, and described 220V exchanges turn direct current 15V electricity
Source module 101 connects push-pull power amplifier circuit 503.
The touch-screen 201 and status indicator lamp 202 are connected on described microcontroller 301.
Specifically：
In human-computer interaction module 2, touch-screen 201 includes the input and display of customer parameter, micro- using the true color screen of serial ports, use
The serial ports of processor 301 controls；Status indicator lamp 202 is mainly used to the running status of real-time display equipment, passes through microprocessor
The I/O controls of device 301.
In main control module 3, microprocessor 301 uses the 32-bit microprocessor STM32F103 based on ARM cores of ST companies
Chip, highest 72MHz working frequencies, its built-in 2 12 A/D converters A/D, 2 12 D/A converter D/A, up to
7 timers, there is the communication interfaces such as SPI, USB, CAN, IIC, USART.Microprocessor 301 is mainly controlled according to what user set
Parameter is treated, in the range of the total technical index of equipment, control ultrasonic therapy head module output meets desired ultrasonic signal,
And stabilize it, reliably work.
In power supply module 1, using Sai Side insulating power supply SAS100-15-K, power 100W, input ac voltage scope
165-265VAC, direct current 15V voltage signals are exported, power supply is provided to push-pull power amplifier module and level switch module；Level conversion
Module uses multiple DC-DC modules, is respectively completed DC15V-DC12V, DC12V- ± 9V, DC9V-DC5V, DC5V-DC3.3V etc.
The conversion of level.
Fig. 2 shows the Multimode Control modular structure of the present invention, and Multimode Control module includes the expert treatment side pre-set,
Can be called by human-computer interaction module, expert treat policy different diseases is pre-seted different frequencies or combination of frequency,
Watt level, treatment time parameter.The expert, which treats, can be pre-stored in local storage, can also be passed through by user
Human-computer interaction module, which match somebody with somebody, postpones preservation, or is downloaded by telecommunication network and be saved in local.Described expert treats can be to every
The output frequency and power of individual ultrasonic launching head carry out different settings, with cause the depth around the effect of center therapentic part,
Section, cross-sectional sizes optimize.
Embodiment 2：
Referring to accompanying drawing 3, microprocessor control DDS integrated chips produce ultrasonic excitation signal, and DDS integrated chips are public using AD
The AD9851 of department, output frequency highest 180MHz, the output signals such as sine wave, square wave and triangular wave can be produced, it is low in energy consumption.It is logical
Universal serial bus connection microprocessor is crossed, has source crystal oscillator to pass through as reference clock, the sine wave exciting signal of output using 50MHz
R, the low-pass filter circuit of L, C composition；Filter out the signal after harmonic wave interference and enter duty ratio adjusting circuit；Duty ratio adjusting circuit
It is made up of high-speed analog switch, the dutycycle that microprocessor inputs B end signals by adjusting is realized to pumping signal dutycycle
Control：During the high level of B ends, fout=fin;During the low level of B ends, fout=GND (0V), within a fixed cycle, regulation height
The time of level, that is, realize the control to pumping signal dutycycle.
Embodiment 3：
Referring to accompanying drawing 4, in power amplifier module, U4 composition one-level amplifying circuits, pumping signal is inputted by in-phase end, forms same phase
Scaling circuit, multiplication factor determine that microprocessor is by adjusting number by the resistance value of digital potentiometer and R3 ratio
The size of word potentiometer resistance value, so as to control the size of output voltage, further realize the control to power output；U4 is defeated
The power gone out is in 1W or so；C5 is coupled capacitor；Q3 form second amplifying circuit, R4, R5 by forming biasing circuit after partial pressure,
R6, C6 effect are feedback compensations, and power output reaches 5W or so after Q3 amplifications, are coupled to push-pull power amplifier electricity by transformer T1
Road；V_set1, V_set2 are used for setting Q1, Q2 static working current, and its size is adjustable in 0-6V, and Q1, Q2 are power MOS
Pipe, T2 are output transformer, and L4 is choking-winding, filters out influence of the high frequency to dc source.
Embodiment 4：
Referring to accompanying drawing 5, U6 is frequency error factor relay, and microprocessor is according to the parameter setting of user, and control U6 outputs are not
Same centre frequency,（Such as 1MHz or 3MHz）Ultrasound drive signals；The effect of match circuit is the efficiency of raising system.Change
When series resonance occurs for energy device, circuit total impedance is not pure resistance state；On the one hand match circuit adds matching inductance or electric capacity makes electricity
Lu Chengchun resistance states, now the impedance of transducer is minimum；Ultrasound-driven circuit is regarded as a power supply, transducer is used as load, by
Circuit theory knowledge is understood：When the internal resistance of source is equal to load impedance, the power for loading acquisition is maximum.Match circuit is on the other hand
It is to carry out impedance conversion so that transducer can obtain the defeated people of power of maximum, and subfunction is realized by transformer T2.According to controlling
The quantity for treating head is set, and U6 can have multiple rate-adaptive pacemaker modules.
Embodiment 5：
Referring to accompanying drawing 6 and 7.Fig. 6 is voltage, the schematic diagram of current sample.Sample circuit can neither influence original main electricity
Road, desired signal can be accurately gathered again, and ensure that signal is undistorted as far as possible.Voltage sample is in high-frequency power transformer T2
Separately rich one group of winding, winding two terminate adjustable potentiometer RV, have adjusted the sampled voltage size of output on magnetic core；Current sample
It can be realized by resistance, Hall current sensor or current transformer.For resistance due to directly being connected with transducer, its resistance is excessive
When can produce extra power attenuation and pressure drop, and resistance is too small, and signal can be made too weak, therefore design comparison bothers;Hall electricity
Flow sensor ratio of precision is higher, but cost is very high, and applying frequency is relatively low；The present invention carries out electric current using current transformer and adopted
Sample, current transformer T3 are connected between ultrasound drive signals and transducer, and current signal is converted to voltage by power resistor Ri
Signal output.
It is shown in Figure 7, two zero-crossing comparators of two amplifier U7, U8 compositions, by the sampling electricity of the same frequency of input
Stream, sampled voltage signal are adjusted as synperiodic square-wave signal；U9, U10 are two phase inverters, improve zero-crossing comparator output
Square wave it is front and rear along steepness；U11 is D triggers, and electric current, voltage square wave signal after adjusting are separately input to the D of D triggers
End and CLK ends, if voltage leading current, the Q ends output level Sig_hl of D triggers is logical zero；If electric current is electric in advance
Pressure, then the Q ends output Sig_hl level of D triggers is logical one；The Q ends output level Sig_hl of D triggers is input to
Microprocessor, the foundation of frequency is increasedd or decreased when being controlled as microprocessor.Two square-wave signals also enter into simultaneously and door
U12, obtain embodying the pulse width signal output Sig_ph of phase difference, if voltage and current phase is identical, pulse width signal Sig_
Ph dutycycle is 50%；If phase difference be present in the two, the pulse width signal Sig_ph exported dutycycle certainly less than for
50%, the dutycycle Sig_ph of this output are the size for reflecting electric current, voltage phase difference, and Sig_ph signals also enter into micro-
Processor, such microprocessor is by continually scanning for Sig_hl, Sig_ph signal, according to the dutycycle size of signal and electric current
Advanced or lagged relationship produces the frequency increment of DDS generators by computing, so as to adjust the frequency of ultrasonic excitation signal, realizes
Frequency from motion tracking so that transducer always works in resonant condition, improves the efficiency of system.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (1)
- A kind of 1. expert system based on ultrasonic physiotherapy equipment, it is characterised in that：Including sonicator and Multimode Control module, its In, sonicator include power supply module, human-computer interaction module, main control module, DDS module, power amplifier module, treatment head module, Frequency tracking module；Described Multimode Control module includes the expert treatment side pre-set, can be carried out by human-computer interaction module Call, expert treats policy and different parameters is pre-seted to different diseases, and the parameter includes frequency or combination of frequency, power are big Small, treatment time；The treatment head module includes a frequency error factor and match circuit, the frequency error factor and match circuit it is defeated Enter the output end of end connection push-pull power amplifier circuit；The input of the frequency error factor and match circuit is also connected with microprocessor；Institute The output end for stating frequency error factor and match circuit connects a transducer；Treatment head module has multiple treatment heads, and each treatment Head has adsorption element, and the adsorption element for the treatment of head is the adsorption cover of approximate cone-shape；Each ultrasonic therapeutic head is sent out by 2-5 ultrasound Penetrate head to combine, and each emitting head is by main control module independent control；Described expert treats can be to each ultrasonic launching head Output frequency and power carry out different setting, to cause the depth around the effect of center therapentic part, cross-sectional sizes optimal Change；The exportable ultrasonic wave with multiple centre frequencies of the therapeutic equipments, and the continuously adjustabe in the range of 0.5-3.5MHz, are used for Organic cardiovascular patient, the treatment of athletic injury patient；Ultrasonic therapeutic head effective radiating area is 3-9cm2, it is effectively defeated Go out the sound intensity≤3W/cm2；Echo transducer is provided with treatment head, to monitor the depth of focus of ultrasound；The frequency-tracking mould Block includes a current-voltage sampling circuit, the input connection transducer of the current-voltage sampling circuit；The Current Voltage The output end of sample circuit connects a phase difference detecting circuit, and the output end of the phase difference detecting circuit connects microcontroller, Microcontroller adjusts frequency according to the size of phase difference, so as to realize frequency from motion tracking；The DDS module includes a DDS Generation circuit, the output end that circuit occurs for the DDS connect a low-pass filter circuit, and the output end of the low-pass filter circuit connects A duty ratio adjusting circuit is connect, the duty ratio adjusting circuit is connected with microprocessor；It is original for producing that circuit occurs for DDS Ultrasonic excitation signal, realized using Direct Digital Frequency Synthesizers；Low-pass filter circuit is used to filter out DDS generation circuit outputs Harmonic wave interference, harmonic wave interference select 7 rank Butterworth lowpass filters essentially from reference clock；Duty ratio adjusting circuit is used In the dutycycle of control output ultrasonic wave signal, microcontroller is by controlling duty ratio adjusting circuit to adjust ultrasonic excitation signal Dutycycle, so as to realize the control to exporting ultrasonic signal dutycycle；Described power amplifier module includes one-level amplifying circuit, described The output end of the in-phase input end connection duty ratio adjusting circuit of one-level amplifying circuit, realizes and the excitation after duty ratio modulation is believed Number tentatively amplified；The inverting input of the one-level amplifying circuit connects a digital potentiometer, anti-phase by adjusting access The size of resistance is held, controls the size of output signal, it is described by follow-up amplification with the final control realized to treating intensity Digital potentiometer is connected with microprocessor, and the output end connection second amplifying circuit of the one-level amplifying circuit, the two level is put Big circuit output end connects a push-pull power amplifier circuit；It is very faint, it is necessary to be put through overpower that pumping signal caused by circuit occurs for DDS Ultrasonic transducer could be driven greatly；One-level amplifying circuit realizes the preliminary amplification to pumping signal, and second amplifying circuit is to one-level Amplifying circuit output is further amplified, and is finally amplified, power output drive signal, is pushed away by push-pull power amplifier circuit again Dynamic transducer work；Microcontroller is by controlling the multiplication factor (end of oppisite phase access resistance sizes) of one-level power amplifier, to realize pair The adjustment of power output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174886.1A CN104208822B (en) | 2014-04-28 | 2014-04-28 | Expert system based on ultrasonic physiotherapy equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174886.1A CN104208822B (en) | 2014-04-28 | 2014-04-28 | Expert system based on ultrasonic physiotherapy equipment |
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| Publication Number | Publication Date |
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| CN104208822A CN104208822A (en) | 2014-12-17 |
| CN104208822B true CN104208822B (en) | 2018-03-16 |
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| CN105797269B (en) * | 2014-12-30 | 2019-04-09 | 北京跃达康科技有限公司 | Using the electrochemical therapeutical instrument of expert control system and the control method of expert system |
| CN107441621A (en) * | 2017-09-07 | 2017-12-08 | 武汉欧辰光电有限公司 | Intelligent fat reducing instrument |
| CN108355260A (en) * | 2018-04-10 | 2018-08-03 | 深圳市是源医学科技有限公司 | Ultrasonic therapeutic apparatus host and ultrasonic therapeutic apparatus |
| CN111184949B (en) * | 2019-07-09 | 2022-04-15 | 重庆医科大学 | Focused ultrasound ablation system and control method thereof |
| CN112859673A (en) * | 2020-12-31 | 2021-05-28 | 沈阳赛镝医疗器械有限公司 | Intelligent self-adaptive module for ultrasonic electric shock power |
| CN113633900B (en) * | 2021-08-04 | 2024-01-26 | 四川泰猷科技有限公司 | Different frequency band frequency and power adjusting method based on medical ultrasonic treatment device |
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| CN103446668A (en) * | 2013-09-11 | 2013-12-18 | 成都锐联科技有限公司 | Transdermal drug delivery therapeutic apparatus and transdermal drug delivery therapeutic method |
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