CN101972154A - Ultrasound emitting system for high frequency ultrasonic diagnostic equipment - Google Patents
Ultrasound emitting system for high frequency ultrasonic diagnostic equipment Download PDFInfo
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- CN101972154A CN101972154A CN 201010553806 CN201010553806A CN101972154A CN 101972154 A CN101972154 A CN 101972154A CN 201010553806 CN201010553806 CN 201010553806 CN 201010553806 A CN201010553806 A CN 201010553806A CN 101972154 A CN101972154 A CN 101972154A
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Abstract
The invention discloses an ultrasound emitting system for high frequency ultrasonic diagnostic equipment, and belongs to the technical field of medical ultrasonic diagnosis technology. The ultrasound emitting system comprises a high frequency array ultrasonic transducer, a high voltage matrix switching circuit, an emitting driving circuit and a field programmable gate array (FPGA) control circuit, wherein the high voltage matrix switching circuit connects array elements of the high frequency array ultrasonic transducer with various emitting channels of the emitting driving circuit, and performs circular switching according to the scanning sequence of ultrasonic beams during ultrasonic imaging; the emitting driving circuit generates high voltage pulses to act on the high frequency array ultrasonic transducer to generate ultrasound; and the FPGA control circuit controls the switching between the high frequency array ultrasonic transducer and the various emitting channels of the emitting driving circuit to generate trigger pulses of the emitting driving circuit. The circuit volume of the whole ultrasound emitting system is reduced, the number of used components is greatly decreased and the hardware cost is effectively controlled.
Description
Technical field
The present invention relates to the medical ultrasound diagnosis technical field, particularly a kind of ultrasonic emitting system that is used for digital portable high frequency ultrasonic diagnostic equipment.
Background technology
In the medical ultrasound image equipment, enter the quality of tissue ultrasound wave waveform, directly have influence on the quality of signal chains downstream echo information and the definition of final image.In clinical practice, the ultrasonic emitting system need in time adjust parameters such as frequency of ultrasonic, peak-to-peak value, dutycycle and umber of pulses according to the change in depth of tested tissue, the switching of scanning pattern and the needs of DCFI.
Ultrasonic image-forming system of the prior art, each transmission channel need two field effect transistor of a field effect transistor centering of drive, and the right quantity of field effect transistor is consistent with the quantity of transmission channel.Therefore the radiating circuit number of elements that adopts traditional approach to constitute is many, causes manufacturing cost, volume and power consumption too high, is unfavorable for that ultrasonic diagnostic equipment develops to portable direction; Simultaneously,, may cause the conducting simultaneously of two field effect transistor, make the high voltage power supply and the ground short circuit that are connected with the field effect transistor driver respectively, the danger of this meeting detonator circuit damage, poor reliability because two of field effect transistor driver export also not exclusively synchronously.Especially when the detection frequency reached the 10-20MHz high-frequency range, narrow trigger impulse can make emitted energy reduce, and echo information is flooded by noise easily, and signal to noise ratio descends, and detected the degree of depth and reduced.
Summary of the invention
In order to overcome the deficiencies in the prior art, reduce the volume and the power consumption of manufacturing cost, minimizing radiating circuit element;
When the detection frequency reaches the 10-20MHz high-frequency range, improve emitted energy, improve signal to noise ratio and improve the detection degree of depth, the invention provides a kind of ultrasonic emitting system that is used for high-frequency ultrasound in diagnosis equipment,
The ultrasonic emitting system comprises: HF array formula ultrasonic transducer, high-pressure matrix on-off circuit, emission drive circuit and FPGA control circuit,
Described high-pressure matrix on-off circuit is connected the array element of described HF array formula ultrasonic transducer with each transmission channel in the described emission drive circuit, and the scanning of the ultrasonic wave acoustic beam switching that circulates in proper order during according to ultra sonic imaging; Described emission drive circuit produces high-voltage pulse, and described high-voltage pulse acts on described HF array formula ultrasonic transducer, produces ultrasound wave; Described FPGA control circuit is realized the switching controls of each transmission channel in described HF array formula ultrasonic transducer and the described emission drive circuit, produces the trigger impulse of described emission drive circuit.
Described high-pressure matrix on-off circuit is made of 16 passage high-pressure matrix switch chips.
Described high-pressure matrix switch chip is specially HV2701.
Described emission drive circuit is made of 8 channel field effect pipe driving chips.
Described field effect pipe driving chip is specially HDL6V5582.
Described FPGA control circuit comprises: obtains single EP positive pulse module, 32 tunnel emission focus control modules and output emission and repeats the positive pulse module,
Describedly obtain single EP positive pulse module and be used to obtain single EP positive pulse; Described 32 tunnel emission focus control modules are used to export 16 road delay datas; Described output emission repeats the positive pulse module and is used for output emission repetition positive pulse.
Describedly obtain single EP positive pulse module and comprise: first time delay module, first MUX, first not gate, second not gate and two inputs or door,
Single negative pulse and 80M clock are imported described first time delay module simultaneously, export at least one road time-delay negative pulse; Host computer provides EP pulse width to select signal; Described time-delay negative pulse and described EP pulse width select signal to import described first MUX simultaneously; The output of described first MUX and described single negative pulse are imported described two inputs or door simultaneously through the output of described first not gate, the output of described two inputs or door is obtained single EP positive pulse by described second not gate, and described single EP positive pulse is respectively applied for described 32 tunnel emission focus control modules and described output emission repeats the positive pulse module.
Described 32 tunnel emission focus control modules comprise: second time delay module and second MUX,
Described single EP positive pulse and 80M clock are imported described second time delay module simultaneously, and exporting at least one road precision is the delay data of 12.5ns; Described delay data is imported described second MUX simultaneously with the emission focus control signal, and described second MUX is exported 16 road delay datas.
Described output emission repeats the positive pulse module and comprises: the 3rd time delay module and multichannel or door,
Described single EP positive pulse, 80M clock, EP pulse width select signal and pulse repeat number N to import described the 3rd time delay module simultaneously, the single EP positive pulse time-delay in output N road, the single EP positive pulse time-delay in described N road is by described multichannel or door, the output emission repeats positive pulse, wherein, the value of N is a positive integer.
Described FPGA control circuit is specially chip EP1C6.
The beneficial effect of technical scheme provided by the invention is:
The invention provides a kind of ultrasonic emitting system that is used for high-frequency ultrasound in diagnosis equipment, the present invention has adopted the high-pressure matrix on-off circuit of 16 passage high-pressure matrix switch chips formations and the emission drive circuit that 8 channel field effect pipe driving chips constitute, effectively reduced the circuit volume of whole ultrasonic ripple emission system, the usage quantity of components and parts significantly reduces, and hardware cost has obtained effective control; When the detection frequency reaches the 10-20MHz high-frequency range, improved emitted energy, improved signal to noise ratio and improved the detection degree of depth; The high emission frequency of ultrasound wave can reach more than the 10MHz, is applicable to the use of digital portable high frequency ultrasonic diagnostic equipment; And, realized trigger impulse frequency, umber of pulse and each transmission channel are triggered the control of delay time by design to the FPGA control circuit.
Description of drawings
Fig. 1 is the structured flowchart that is used for the ultrasonic emitting system of high-frequency ultrasound in diagnosis equipment provided by the invention;
Fig. 2 is the connection diagram of 8 channel field effect pipe driving chips provided by the invention;
Fig. 3 is the structured flowchart of FPGA control circuit provided by the invention;
Fig. 4 is the sketch map that obtains single EP positive pulse module provided by the invention;
Fig. 5 is the sketch map of 32 tunnel emission focus control modules provided by the invention;
Fig. 6 is the sketch map that output emission provided by the invention repeats the positive pulse module;
Fig. 7 is the sketch map of trigger impulse provided by the invention and high pressure transmitted waveform;
Fig. 8-1 is first sketch map of high-pressure matrix on-off circuit provided by the invention;
Fig. 8-2 is second sketch map of high-pressure matrix on-off circuit provided by the invention;
Fig. 8-3 is the 3rd sketch map of high-pressure matrix on-off circuit provided by the invention;
Fig. 8-4 is the 4th sketch map of high-pressure matrix on-off circuit provided by the invention;
Fig. 8-5 is the 5th sketch map of high-pressure matrix on-off circuit provided by the invention;
Fig. 8-6 is the 6th sketch map of high-pressure matrix on-off circuit provided by the invention;
Fig. 8-7 is the 7th sketch map of high-pressure matrix on-off circuit provided by the invention;
Fig. 8-8 is the 8th sketch map of high-pressure matrix on-off circuit provided by the invention;
Fig. 9 is the sketch map of high-pressure matrix on-off circuit control signal provided by the invention.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
In order to overcome the deficiencies in the prior art, reduce the volume and the power consumption of manufacturing cost, minimizing radiating circuit element; When the detection frequency reaches the 10-20MHz high-frequency range, improve emitted energy, signal to noise ratio and the detection degree of depth, the embodiment of the invention provides a kind of ultrasonic emitting system that is used for high-frequency ultrasound in diagnosis equipment, referring to Fig. 1, sees for details hereinafter and describes:
This ultrasonic emitting system comprises: HF array formula ultrasonic transducer, high-pressure matrix on-off circuit, emission drive circuit and FPGA control circuit,
The high-pressure matrix on-off circuit is connected the array element of HF array formula ultrasonic transducer with each transmission channel in the emission drive circuit, and the scanning of the ultrasonic wave acoustic beam switching that circulates in proper order during according to ultra sonic imaging; The emission drive circuit produces high-voltage pulse, and high-voltage pulse acts on HF array formula ultrasonic transducer, produces ultrasound wave; The FPGA control circuit is realized HF array formula ultrasonic transducer and the switching controls of launching each transmission channel in the drive circuit, produces the trigger impulse of emission drive circuit.
Emission drive circuit in the embodiment of the invention is made of 8 channel field effect pipe driving chips.
Referring to Fig. 2, further,, reduce the volume of components and parts in order to improve the integrated level of element, the field effect pipe driving chip is preferably HDL6V5582.
The signal input part of HDL6V5582 is DP1～DP8 and DN1～DN8, and DP1～DP8 and DN1～DN8 are pulse excitation signal; Input CC0, CC1 and ATHP are control signal; The high-voltage pulse of signal output part HVout1～HVout8 output acts on HF array formula ultrasonic transducer, produces ultrasound wave; HVpp and HVnn are the positive or negative high voltage power supply, can reach ± 100V; Vd is+5V, V1 be+3.3V; Resistance R 1～R18, R35～R36 connects input and field effect pipe driving chip HDL6V5582, R19～R26 connects field effect pipe driving chip HDL6V5582 and outfan, be used for running, be convenient to the debugging and the detection of ultrasonic emitting system in the ultrasonic emitting system.R27～R35 is 1 kilohm, the resistance of 1W, the output impedance that is used to mate HF array formula ultrasonic transducer; C1～C12 is the shunt capacitance of withstand voltage 200V, 0.1uF～1uF, and C13～C15 is the shunt capacitance of withstand voltage 15V, 0.1uF～1uF.In actual application, can determine the emission receive path number that supersonic imaging apparatus is total according to actual needs, the use number of decision field effect pipe driving chip, for example: in 32 passage emission systems, need use 48 channel field effect pipe driving chips simultaneously.
High-pressure matrix on-off circuit in the embodiment of the invention is made of 16 passage high-pressure matrix switch chips.
Further, in order to improve the integrated level of element, reduce the volume of components and parts, the high-pressure matrix switch chip is preferably HV2701.
Referring to Fig. 3, by design to the FPGA control circuit, this FPGA control circuit comprises: obtain single EP positive pulse module, 32 tunnel emission focus control modules and output emission and repeat the positive pulse module, obtain single EP positive pulse module and be used to obtain single EP positive pulse; 32 tunnel emission focus control modules are used to export 16 road delay datas; Output emission repetition positive pulse module is used for the output emission and repeats positive pulse.
Referring to Fig. 4, obtain single EP positive pulse module and comprise: first time delay module, first MUX, first not gate, second not gate and two inputs or door, single negative pulse and 80M clock are imported first time delay module simultaneously, export at least one road time-delay negative pulse; Host computer provides EP pulse width to select signal; Time-delay negative pulse and EP pulse width select signal to import first MUX simultaneously; The output of first MUX and single negative pulse are imported two inputs or door simultaneously through the output of first not gate, the output of two inputs or door is obtained single EP positive pulse by second not gate, and single EP positive pulse is respectively applied for 32 tunnel emission focus control modules and the output emission repeats the positive pulse module.
Referring to Fig. 5,32 tunnel emission focus control modules comprise: second time delay module and second MUX, and single EP positive pulse and 80M clock are imported second time delay module simultaneously, and exporting at least one road precision is the delay data of 12.5ns; Delay data is imported second MUX simultaneously with the emission focus control signal, and second MUX is exported 16 road delay datas.
Referring to Fig. 6, the output emission repeats the positive pulse module and comprises: the 3rd time delay module and multichannel or door, single EP positive pulse, 80M clock, EP pulse width select signal and pulse repeat number N to import the 3rd time delay module simultaneously, the single EP positive pulse time-delay in output N road, the single EP positive pulse time-delay in N road is by multichannel or door, and the output emission repeats positive pulse.
Wherein, the value of N is a positive integer, can determine the value of N according to practical situations, and the value of N is 10-32 usually, and during specific implementation, the embodiment of the invention does not limit this.
Further, in order to improve the integrated level of element, reduce the volume of components and parts, the FPGA control circuit in the embodiment of the invention is specially chip EP1C6.
Referring to Fig. 7, DP1～DP8, DN1～DN8 are pulse excitation signal; HVout1～Hvout8 is a high-voltage pulse excitation end; Pulse width (frequency), umber of pulse realize by the control of FPGA control circuit, input voltage V1 scope is 0～+ 3.3V, the transmitted waveform highest frequency of output can reach more than the 10MHz, and output voltage V pp and Vnn scope are ± 100V.
In actual applications, the connected mode and the control mode that need decide the high-pressure matrix on-off circuit according to the array number and the total transmission channel number of supersonic imaging apparatus of HF array formula ultrasonic transducer.
Referring to Fig. 8-1, Fig. 8-2, Fig. 8-3, Fig. 8-4, Fig. 8-5, Fig. 8-6, Fig. 8-7 and Fig. 8-8, the embodiment of the invention is 128 with the array number of HF array formula ultrasonic transducer, the total transmission channel number of supersonic imaging apparatus is 32 for example, the structure of high-pressure matrix on-off circuit is described, adopt 8 16 passage high-pressure matrix switch chip HV2701, Probe1～Probe128 connects 128 array element ports that HF array formula ultrasonic transducer is arranged in order, HVout1～HVout32 is a high-voltage pulse excitation end, connect in the ultrasonic emitting system and 32 corresponding field effect pipe driving chips of signalling channel, Vpp and Vnn are the positive or negative high voltage power supply, can reach ± 100V, Vd is+5V, Din is a data-in port, Dout1～Dout4 is a data-out port, Clk1～Clk4 is the clock control input port, and LE is for enabling control port, and Clr is the zero clearing control port, each signal is realized the scanning of ultrasonic acoustic beam by the control of FPGA control circuit.
Referring to Fig. 9, the sketch map of the high-pressure matrix on-off circuit control signal that produces by the FPGA control circuit, before HF array formula ultrasonic transducer is started working, need carry out the original state setting, clear terminal Clr and Enable Pin LE put low level, during the data signal Din set, Clk1～Clk4 imports 8 clock signals continuously, data are write in the internal register of high-pressure matrix switch chip HV2701, make high-voltage pulse excitation end HVout1～HVout32 be connected with preceding 32 the array element port Probe1～Probe32 of HF array formula ultrasonic transducer.When HF array formula ultrasonic transducer begins to scan, the Din reset, Clk1～Clk4 is according to repetition period of ultrasound emission input clock signal successively, adjusts the order that is connected of high-voltage pulse excitation end HVout1～HVout32 and HF array formula ultrasonic transducer, realizes the scanning of ultrasonic acoustic beam.After piece image scanning was finished, clear terminal Clr and Enable Pin LE recovered high level, repeated said process, can realize the real-time continuous scanning of image.
In sum, the embodiment of the invention provides a kind of ultrasonic emitting system that is used for high-frequency ultrasound in diagnosis equipment, by high-pressure matrix on-off circuit that has adopted 16 passage high-pressure matrix chips formations and the emission drive circuit that 8 channel field effect pipe driving chips constitute, effectively reduced the circuit volume of whole ultrasonic ripple emission system, the usage quantity of components and parts significantly reduces, and hardware cost has obtained effective control; The high emission frequency of ultrasound wave can reach more than the 10MHz, is applicable to the use of digital portable high frequency ultrasonic diagnostic equipment; And, realized trigger impulse frequency, umber of pulse and each transmission channel are triggered the control of delay time by design to the FPGA control circuit.
It will be appreciated by those skilled in the art that accompanying drawing is the sketch map of a preferred embodiment, the invention described above embodiment sequence number is not represented the quality of embodiment just to description.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a ultrasonic emitting system that is used for high-frequency ultrasound in diagnosis equipment is characterized in that, comprising: HF array formula ultrasonic transducer, high-pressure matrix on-off circuit, emission drive circuit and FPGA control circuit,
Described high-pressure matrix on-off circuit is connected the array element of described HF array formula ultrasonic transducer with each transmission channel in the described emission drive circuit, and the scanning of the ultrasonic wave acoustic beam switching that circulates in proper order during according to ultra sonic imaging; Described emission drive circuit produces high-voltage pulse, and described high-voltage pulse acts on described HF array formula ultrasonic transducer, produces ultrasound wave; Described FPGA control circuit is realized the switching controls of each transmission channel in described HF array formula ultrasonic transducer and the described emission drive circuit, produces the trigger impulse of described emission drive circuit.
2. the ultrasonic emitting system that is used for high-frequency ultrasound in diagnosis equipment according to claim 1 is characterized in that, described high-pressure matrix on-off circuit is made of 16 passage high-pressure matrix switch chips.
3. the ultrasonic emitting system that is used for high-frequency ultrasound in diagnosis equipment according to claim 2 is characterized in that described high-pressure matrix switch chip is specially HV2701.
4. the ultrasonic emitting system that is used for high-frequency ultrasound in diagnosis equipment according to claim 1 is characterized in that, described emission drive circuit is made of 8 channel field effect pipe driving chips.
5. the ultrasonic emitting system that is used for high-frequency ultrasound in diagnosis equipment according to claim 4 is characterized in that described field effect pipe driving chip is specially HDL6V5582.
6. the ultrasonic emitting system that is used for high-frequency ultrasound in diagnosis equipment according to claim 1, it is characterized in that, described FPGA control circuit comprises: obtain single EP positive pulse module, 32 tunnel emission focus control modules and output emission and repeat the positive pulse module
Describedly obtain single EP positive pulse module and be used to obtain single EP positive pulse; Described 32 tunnel emission focus control modules are used to export 16 road delay datas; Described output emission repeats the positive pulse module and is used for output emission repetition positive pulse.
7. the ultrasonic emitting system that is used for high-frequency ultrasound in diagnosis equipment according to claim 6, it is characterized in that, describedly obtain single EP positive pulse module and comprise: first time delay module, first MUX, first not gate, second not gate and two inputs or door
Single negative pulse and 80M clock are imported described first time delay module simultaneously, export at least one road time-delay negative pulse; Host computer provides EP pulse width to select signal; Described time-delay negative pulse and described EP pulse width select signal to import described first MUX simultaneously; The output of described first MUX and described single negative pulse are imported described two inputs or door simultaneously through the output of described first not gate, the output of described two inputs or door is obtained single EP positive pulse by described second not gate, and described single EP positive pulse is respectively applied for described 32 tunnel emission focus control modules and described output emission repeats the positive pulse module.
8. the ultrasonic emitting system that is used for high-frequency ultrasound in diagnosis equipment according to claim 7 is characterized in that, described 32 tunnel emission focus control modules comprise: second time delay module and second MUX,
Described single EP positive pulse and 80M clock are imported described second time delay module simultaneously, and exporting at least one road precision is the delay data of 12.5ns; Described delay data is imported described second MUX simultaneously with the emission focus control signal, and described second MUX is exported 16 road delay datas.
9. the ultrasonic emitting system that is used for high-frequency ultrasound in diagnosis equipment according to claim 7 is characterized in that, described output emission repeats the positive pulse module and comprises: the 3rd time delay module and multichannel or door,
Described single EP positive pulse, 80M clock, EP pulse width select signal and pulse repeat number N to import described the 3rd time delay module simultaneously, the single EP positive pulse time-delay in output N road, the single EP positive pulse time-delay in described N road is by described multichannel or door, the output emission repeats positive pulse, wherein, the value of N is a positive integer.
10. according to claim 1 or the 6 described ultrasonic emitting systems that are used for high-frequency ultrasound in diagnosis equipment, it is characterized in that described FPGA control circuit is specially chip EP1C6.
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| CN102629838A (en) * | 2012-01-18 | 2012-08-08 | 北京工业大学 | Portable high-voltage multiple-pulse ultrasonic wave transmitting device |
| CN104337548A (en) * | 2014-10-31 | 2015-02-11 | 东北大学 | Portable B-ultrasonic wave transmitting and receiving system connected with convex array probe and method |
| CN104586435A (en) * | 2014-12-29 | 2015-05-06 | 中国科学院苏州生物医学工程技术研究所 | Pulse bandwidth and amplitude adjustable broadband high-pressure narrow pulse system and pulse generating method |
| CN104739453A (en) * | 2013-12-31 | 2015-07-01 | 深圳市鹏瑞智能技术应用研究院 | Ultrasonic tomography system and method |
| CN105796131A (en) * | 2016-05-22 | 2016-07-27 | 复旦大学 | Backscattering ultrasonic bone diagnosis system |
| CN106175838A (en) * | 2016-09-07 | 2016-12-07 | 复旦大学 | A kind of ultrasonic sclerotin diagnostic system of back scattering based on array probe |
| CN109975432A (en) * | 2019-04-19 | 2019-07-05 | 中国飞机强度研究所 | Emission control method, device, module and 128 channel ultrasound phased array instruments |
| CN110495905A (en) * | 2019-07-24 | 2019-11-26 | 苏州诺莱声科技有限公司 | A kind of ultrasonic probe and ultrasonic testing system |
| TWI739156B (en) * | 2019-09-16 | 2021-09-11 | 臺北醫學大學 | System and method for biological object imagimg and treatment |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102629838A (en) * | 2012-01-18 | 2012-08-08 | 北京工业大学 | Portable high-voltage multiple-pulse ultrasonic wave transmitting device |
| CN104739453A (en) * | 2013-12-31 | 2015-07-01 | 深圳市鹏瑞智能技术应用研究院 | Ultrasonic tomography system and method |
| CN104337548A (en) * | 2014-10-31 | 2015-02-11 | 东北大学 | Portable B-ultrasonic wave transmitting and receiving system connected with convex array probe and method |
| CN104586435A (en) * | 2014-12-29 | 2015-05-06 | 中国科学院苏州生物医学工程技术研究所 | Pulse bandwidth and amplitude adjustable broadband high-pressure narrow pulse system and pulse generating method |
| CN105796131A (en) * | 2016-05-22 | 2016-07-27 | 复旦大学 | Backscattering ultrasonic bone diagnosis system |
| CN105796131B (en) * | 2016-05-22 | 2023-10-13 | 复旦大学 | Backscattering ultrasonic bone diagnosis system |
| CN106175838A (en) * | 2016-09-07 | 2016-12-07 | 复旦大学 | A kind of ultrasonic sclerotin diagnostic system of back scattering based on array probe |
| CN106175838B (en) * | 2016-09-07 | 2023-09-08 | 复旦大学 | Backscattering ultrasonic bone diagnosis system based on array probe |
| CN109975432A (en) * | 2019-04-19 | 2019-07-05 | 中国飞机强度研究所 | Emission control method, device, module and 128 channel ultrasound phased array instruments |
| CN110495905A (en) * | 2019-07-24 | 2019-11-26 | 苏州诺莱声科技有限公司 | A kind of ultrasonic probe and ultrasonic testing system |
| TWI739156B (en) * | 2019-09-16 | 2021-09-11 | 臺北醫學大學 | System and method for biological object imagimg and treatment |
| US11351400B2 (en) | 2019-09-16 | 2022-06-07 | Taipei Medical University | Biological object image-capturing and treatment system and method |
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Application publication date: 20110216 |