CN102247167A - B-mode ultrasonic scanner with wireless probe and realization method thereof - Google Patents
B-mode ultrasonic scanner with wireless probe and realization method thereof Download PDFInfo
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- CN102247167A CN102247167A CN2011101761311A CN201110176131A CN102247167A CN 102247167 A CN102247167 A CN 102247167A CN 2011101761311 A CN2011101761311 A CN 2011101761311A CN 201110176131 A CN201110176131 A CN 201110176131A CN 102247167 A CN102247167 A CN 102247167A
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Abstract
The invention relates to the technical field of medical ultrasonics and discloses a B-mode ultrasonic scanner with a wireless probe and a realization method thereof. A line synchronizing signal and a frame synchronizing signal are acquired from an MCU (Micro Control Unit) through a superimposed circuit and are superimposed to an echo simulation signal in an asynchronous communication manner to generate a compounded echo simulation signal; the compounded echo simulation signal is transmitted to a host machine by adopting an asynchronous transmission mode through a wireless signal; the stability of signal transmission is improved, the loss of low-frequency signals is effectively prevented and the quality of signal transmission is improved; in addition, the host machine is connected with the probe by adopting a wireless transmission mode; the probe is not limited by a connecting wire any longer, the use range is widened and the use efficiency of the B-mode ultrasonic scanner is improved; and the B-mode ultrasonic scanner is very convenient to operate.
Description
Technical field
The present invention relates to the medical ultrasonic technical field, in particular a kind of B ultrasonic instrument and its implementation with wireless probe.
Background technology
Per second vibrates 20,000-1,000,000,000 times, and the unheard sound wave of people's ear is called ultrasound wave.An image subject that utilizes hyperacoustic physical characteristic to diagnose and treat is called ultrasound medicine.Its clinical application range is extensive, thereby makes the B ultrasonic machine become indispensable medical apparatus and instruments in the current clinical medicine.
The ultimate principle of B ultrasonic machine is: ultrasonicly propagate in human body, because the various tissues of human body have the property difference of acoustics, ultrasound wave produces physical characteristics such as reflection, refraction, scattering, diffraction, decay and sound source and receptor relative motion generation Doppler frequency shift at the interface at two kinds of different tissues.Use dissimilar diasonographs, adopt various scan methods, receive these reflections, scattered signal, the form that shows various tissues and pathological changes thereof, binding of pathological is learned, clinical medicine, observe, analyze, sum up different reflexive properties, and diseased region, character and dysfunction degree are made diagnosis.
But the B ultrasonic instrument of prior art comprises the B ultrasonic main frame, and by the probe that connecting line is connected with the B ultrasonic main frame, available technology adopting B ultrasonic main frame is connected with probe by connecting line, because probe has pining down of connecting line, and the restriction scope of application, inconvenience during operation; And connecting line is fragile.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The technical problem to be solved in the present invention is, above-mentioned defective at prior art, a kind of B ultrasonic instrument and its implementation with wireless probe is provided, it realizes that main frame is connected the employing Wireless transmission mode with probe, probe no longer is subjected to pining down of connecting line, enlarged the scope of application, operated also very convenient; Improved the service efficiency of B ultrasonic instrument.
The technical scheme that technical solution problem of the present invention is adopted is as follows:
A kind of B ultrasonic instrument with wireless probe wherein, comprises main frame, the wireless probe that adopts wireless transmission method to be connected with host communication;
Described wireless probe comprises:
Main control MCU is used to produce motor drive signal, transmitted pulse signal, time sensitivity control signal, line locking signal, reaches frame synchronizing signal;
The motor-drive circuit that is connected with main control MCU is used for obtaining described motor drive signal from main control MCU, and drives the rotation of probe motor according to described motor drive signal;
The radiating circuit that is connected with main control MCU is used for obtaining described transmitted pulse signal from main control MCU, and produces transmitted pulse according to described transmitted pulse signal;
The echo receiving circuit that is connected with motor-drive circuit, radiating circuit, time sensitivity control circuit respectively, the analogue echoes signal that is used for transmitted pulse is reflected amplifies;
The time sensitivity control circuit that input is connected with main control MCU, outfan is connected with the echo receiving circuit is used to control the gain of analogue echoes signal, and the near field is weakened, and the far field is strengthened;
The supercircuit that is connected with main control MCU with the echo receiving circuit respectively, be used for obtaining the line locking signal from the line locking signal output part of main control MCU, and obtain frame synchronizing signal from the frame synchronizing signal outfan of main control MCU, and the line locking signal, and frame synchronizing signal be added on the analogue echoes signal with asynchronous communication means, produce compound analogue echoes signal;
The radio transmitter that is connected with supercircuit is used for compound analogue echoes signal is adopted Asynchronous Transfer Mode, sends to main frame by wireless signal;
Described main frame is used to receive described compound analogue echoes signal, separated in synchronization from compound analogue echoes signal is come out line locking signal and frame synchronizing signal, and should isolated line locking signal and frame synchronizing signal be treated to segmental line locking signal and frame synchronizing signal respectively, and the echo module by signal is converted to the echo digital signal; And segmental line locking signal and frame synchronizing signal be loaded on the echo digital signal, the ultrasonoscopy that carries out the echo digital signal shows.
The B ultrasonic instrument of described band wireless probe, wherein, described main frame comprises:
Wireless receiving circuit is used to receive the compound analogue echoes signal that radio transmitter sends by wireless transmission method;
The synchronizing separator circuit that is connected with wireless receiving circuit, be used for obtaining compound echo-signal from wireless receiving circuit, and line locking signal and frame synchronizing signal separated from this compound analogue echoes signal, form three road signals and be respectively: analogue echoes signal, line locking signal, and frame synchronizing signal;
The echo circuit that is connected with synchronizing separator circuit is used for receiving the analogue echoes signal that synchronizing separator circuit is separated;
The amplifying circuit that is connected with echo circuit is used for receiving described analogue echoes signal from echo circuit, and the analogue echoes signal that receives is amplified;
The analog to digital conversion circuit that is connected with amplifying circuit is used for transferring the analogue echoes signal after amplifying to the echo digital signal;
The FPGA that is connected with synchronizing separator circuit is used for obtaining described line locking signal and frame synchronizing signal from synchronizing separator circuit, and this line locking signal that obtains and frame synchronizing signal are treated to segmental line locking signal and frame synchronizing signal respectively;
The DSC display circuit that is connected with analog to digital conversion circuit, be used for receiving described echo digital signal from analog to digital conversion circuit, and receive described segmental line locking signal and frame synchronizing signal from FPGA, and segmental line locking signal and frame synchronizing signal be loaded on the echo digital signal, the ultrasonoscopy that carries out the echo digital signal shows.
The B ultrasonic instrument of described band wireless probe, wherein, described supercircuit also is used for frame synchronizing signal is loaded into the line locking signal, and the amplitude of control line synchronizing signal is less than the secondary degree of frame synchronizing signal.
The B ultrasonic instrument of described band wireless probe, wherein, described supercircuit comprises: one first voltage comparator, the first input end difference of described first voltage comparator: be connected with the line locking signal output part of main control MCU, be connected with the frame synchronizing signal outfan of main control MCU, be connected with the echo receiving circuit by the 3rd resistance by second resistance by first resistance;
Second input difference of described first voltage comparator: be connected with a positive working power by the 4th resistance, be connected with a negative working power by the 5th resistance;
The outfan of described first voltage comparator is connected with radio transmitter; And between the outfan of described first voltage comparator and first input end the 6th resistance in parallel and first electric capacity.
The B ultrasonic instrument of described band wireless probe, wherein, described line locking signal is the synchronizing signal of every line in the width of cloth ultrasonoscopy, represents the time of every line sweep;
Described frame synchronizing signal is for showing the time of a frame ultrasonoscopy.
A kind of B ultrasonic instrument implementation method with wireless probe wherein, comprises step:
The main control MCU of A, wireless probe produces motor drive signal, transmitted pulse signal, time sensitivity control signal, line locking signal, reaches frame synchronizing signal;
The radiating circuit of B, wireless probe obtains described transmitted pulse signal from main control MCU, and produces transmitted pulse according to described transmitted pulse signal;
The echo receiving circuit of C, wireless probe amplifies the analogue echoes signal that transmitted pulse reflects;
The supercircuit of D, wireless probe obtains the line locking signal from the line locking signal output part of main control MCU, and obtain frame synchronizing signal from the frame synchronizing signal outfan of main control MCU, and the line locking signal, and frame synchronizing signal be added on the analogue echoes signal with asynchronous communication means, produce compound analogue echoes signal;
E, main frame receive described compound analogue echoes signal, separated in synchronization from compound analogue echoes signal is come out line locking signal and frame synchronizing signal, and should isolated line locking signal and frame synchronizing signal be treated to segmental line locking signal and frame synchronizing signal respectively, and the echo module by signal is converted to the echo digital signal; And segmental line locking signal and frame synchronizing signal be loaded on the echo digital signal, the ultrasonoscopy that carries out the echo digital signal shows.
The B ultrasonic instrument implementation method of described band wireless probe, wherein, described step e specifically comprises:
The wireless receiving circuit of E1, main frame receives the compound analogue echoes signal that radio transmitter sends by wireless transmission method;
E2, the synchronizing separator circuit by main frame obtain compound echo-signal from wireless receiving circuit, and line locking signal and frame synchronizing signal separated from this compound analogue echoes signal, form three road signals and be respectively: analogue echoes signal, line locking signal, and frame synchronizing signal;
The echo circuit of E3, main frame receives the analogue echoes signal of separating in the synchronizing separator circuit, and this analogue echoes signal is amplified by amplifying circuit, is converted to the echo digital signal by analog to digital conversion circuit again; Simultaneously, the FPGA of main frame obtains described line locking signal and frame synchronizing signal from synchronizing separator circuit, and this line locking signal that obtains and frame synchronizing signal are treated to segmental line locking signal and frame synchronizing signal respectively;
The DSC display circuit of E4, main frame receives described echo digital signal from analog to digital conversion circuit, and receive described segmental line locking signal and frame synchronizing signal from FPGA, and segmental line locking signal and frame synchronizing signal be loaded on the echo digital signal, the ultrasonoscopy that carries out the echo digital signal shows.
The B ultrasonic instrument implementation method of described band wireless probe, wherein, described step D also comprises: the supercircuit by probe is loaded into frame synchronizing signal on the line locking signal, and the amplitude of control line synchronizing signal is less than the secondary degree of frame synchronizing signal.
The B ultrasonic instrument implementation method of described band wireless probe, wherein, described step e also comprises, according to the amplitude of line locking signal secondary degree, line locking signal and frame synchronizing signal are extracted from compound analogue echoes signal one by one by first voltage comparator and second voltage comparator less than frame synchronizing signal.
The B ultrasonic instrument implementation method of described band wireless probe, wherein, described line locking signal is the synchronizing signal of every line in the width of cloth ultrasonoscopy, represents the time of every line sweep;
Described frame synchronizing signal is for showing the time of a frame ultrasonoscopy.
B ultrasonic instrument and its implementation of band wireless probe provided by the present invention, owing to obtain line locking signal and frame synchronizing signal from main control MCU by supercircuit, and the line locking signal, and frame synchronizing signal be added on the analogue echoes signal with asynchronous communication means, produce compound analogue echoes signal; Adopt Asynchronous Transfer Mode again, compound analogue echoes signal is sent to main frame by wireless signal; Improve the stability of signal transmission, prevented the loss of low frequency signal effectively, improved the quality of signal transmission; And main frame is connected the employing Wireless transmission mode with probe, probe no longer is subjected to pining down of connecting line, has enlarged the scope of application, operates also very convenient; Improved the service efficiency of B ultrasonic instrument.
In addition, the present invention is also according to the amplitude of the line locking signal secondary degree less than frame synchronizing signal, by first voltage comparator and second voltage comparator line locking signal and frame synchronizing signal are extracted from compound analogue echoes signal one by one, the line locking signal and the frame synchronizing signal performance that extract like this are highly stable, like this and after being loaded into segmental line locking signal and frame synchronizing signal on the echo digital signal, the echo digital signal ultrasonoscopy that shows, very clear, provide users with the convenient.
Description of drawings
Fig. 1 is the B ultrasonic instrument functional schematic block diagram of the band wireless probe of the embodiment of the invention.
Fig. 2 is the host function theory diagram of the embodiment of the invention.
Fig. 3 is the supercircuit structural representation of the wireless probe of the embodiment of the invention.
Fig. 4 is the compound analogue echoes signal structure sketch map of the embodiment of the invention.
Fig. 5 is the B ultrasonic instrument implementation method flow chart of the band wireless probe of the embodiment of the invention.
Fig. 6 is the synchronizing separator circuit structural representation of the main frame of the embodiment of the invention.
The specific embodiment
The invention provides a kind of B ultrasonic instrument and its implementation with wireless probe, clearer, clear and definite for making purpose of the present invention, technical scheme and advantage, below develop simultaneously with reference to accompanying drawing that the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The technical scheme that technical solution problem of the present invention is adopted is as follows:
A kind of B ultrasonic instrument with wireless probe that the embodiment of the invention provides as shown in Figure 1, comprises main frame 200, the wireless probe 100 that adopts wireless transmission method to be connected with main frame 200 communications;
Wherein, be provided with in the described wireless probe 100: main control MCU 110, motor-drive circuit 120, radiating circuit 130, time sensitivity control circuit 140, echo receiving circuit 150, supercircuit 160, and radio transmitter 170.
Described main control MCU 110 is used to produce motor drive signal, transmitted pulse signal, time sensitivity control signal, line locking signal, reaches frame synchronizing signal.Wherein, motor drive signal is used for drive motors, the transmitted pulse signal is used to be transmitted into by therapist and produces ultrasound echo signal on one's body, the time of every line sweep among the every width of cloth figure of line locking signal indication, and frame synchronizing signal represents to show the time of a two field picture.
Described motor-drive circuit 120 is connected with main control MCU 110, is used for obtaining described motor drive signal from main control MCU 110, and drives the rotation of probe motor according to described motor drive signal.
Radiating circuit 130 is connected with main control MCU 110, is used for obtaining described transmitted pulse signal from main control MCU, and produces transmitted pulse according to described transmitted pulse signal; This transmitted pulse runs into object can the reflected back ultrasound echo signal.
Echo receiving circuit 150 is connected with motor-drive circuit 120, radiating circuit 130, time sensitivity control circuit 140 respectively, and the analogue echoes signal that is used for transmitted pulse is reflected amplifies.
The input of time sensitivity control circuit 140 is connected with main control MCU 110, the outfan of time sensitivity control circuit 140 is connected with echo receiving circuit 150, time sensitivity control circuit 140 is used to control the gain of analogue echoes signal, the near field is weakened, and the far field is strengthened.
Because line locking signal and frame synchronizing signal are digital signal, and echo-signal is an analogue signal, in the wireless transmit process of prior art, usually adopt digital signal to adopt the digital signal transmitting chip to carry out wireless transmit with line locking signal and frame synchronizing signal, and echo-signal adopts mimic wireless transmit chip to carry out wireless transmit, with the digital signal of line locking signal and frame synchronizing signal, reach the analogue echoes signal so respectively with different wireless transmitter emissions.
But, do not satisfy design requirement because present wireless chip emission rate does not reach the speed (25us) of line locking signal.So pass through in the continuous experimentation among the present invention, adopt the line locking signal of digital signal, reach frame synchronizing signal and be added on the analogue echoes signal with asynchronous communication means, produce compound analogue echoes signal and transmit, in the echo-signal of receiving terminal, digital signal is arranged.Because its transmission bandwidth is enough (1K-6MHZ), so it is just passable only need to recover digital signal at receiving terminal.
As shown in Figure 3, adopt described supercircuit 160 to comprise among the present invention: one first voltage comparator U1, first input end 1 difference of the described first voltage comparator U1: be connected with the line locking signal output part 111 of main control MCU 110, be connected with the frame synchronizing signal outfan 112 of main control MCU 110, be connected with echo receiving circuit 150 by the 3rd resistance R 3 by second resistance R 2 by first resistance R 1.
Second input, 2 difference of the described first voltage comparator U1: be connected with a positive working power V+ by the 4th resistance R 4, be connected with a negative working power V-by the 5th resistance R 5; As shown in Figure 3, the outfan 3 of the described first voltage comparator U1 is connected with radio transmitter 170; And between the outfan 1 of the described first voltage comparator U1 and first input end 1 the 6th resistance R 6 in parallel and first capacitor C 1.
Adopt among the present invention asynchronous communication means with the line locking signal of digital signal, and frame synchronizing signal be added on the analogue echoes signal, be with a line locking signal and a character of a character of frame synchronizing signal be superimposed upon on the analogue echoes signal and transmit, one one ground transmission of each character, and when transmitting a character, always begin with " start bit ", finish with " position of rest ", do not have the regular time space requirement between the character.All there is a start bit (low level front of each character, logical value), character itself is made up of 5-7 bit data position, and then the character back is a bit check position (also can not having check bit), be one or one and half or two position of rests at last, the position of rest back is the spare bits of random length.Position of rest and spare bits all are defined as high level (logical value 1), so just guarantee that start bit begins the place and necessarily has to jump an edge down.
As shown in Figure 3, it is selected to adopt the resistance of 160 pairs first resistance R 1 of described supercircuit and second resistance R 2 to measure, and so that frame synchronizing signal is loaded on the line locking signal, and the amplitude of control line synchronizing signal is less than the secondary degree of frame synchronizing signal.Compound analogue echoes signal 10 after handling through supercircuit shown in Figure 3 160, as shown in Figure 4, wherein 11 is analogue echoes signal after compound, and 12 is the line locking signal after compound, also is the USEN signal, and 13 is the frame synchronizing signal after compound.In the present embodiment, adopting the amplitude a of the line locking signal 12 after compound is 1.0V, and the amplitude b of frame synchronizing signal is 2.0V.
Described radio transmitter 170 is connected with supercircuit 160, is used for compound analogue echoes signal is adopted Asynchronous Transfer Mode, sends to main frame 200 by wireless signal.
Described main frame 200 is used to receive described compound analogue echoes signal 10, separated in synchronization from compound analogue echoes signal is come out line locking signal and frame synchronizing signal, and should isolated line locking signal and frame synchronizing signal be treated to segmental line locking signal and frame synchronizing signal respectively, and the echo module by signal is converted to the echo digital signal; And segmental line locking signal and frame synchronizing signal be loaded on the echo digital signal, the ultrasonoscopy that carries out the echo digital signal shows, and is specific as follows described:
As shown in Figure 2, described main frame 200 comprises: wireless receiving circuit 210, synchronizing separator circuit 220, FPGA 230, echo circuit 240, amplifying circuit 250, analog to digital conversion circuit 260, DSC display circuit 270.
Synchronizing separator circuit 220 is connected with wireless receiving circuit, be used for obtaining compound echo-signal from wireless receiving circuit 210, and line locking signal and frame synchronizing signal separated from this compound analogue echoes signal, form three road signals and be respectively: analogue echoes signal, line locking signal, and frame synchronizing signal.
In the embodiment of the invention, main frame 200 receives the compound analogue echoes signal 10 of coming from wireless probe 100, as shown in Figure 4, for line locking signal and frame synchronizing signal are separated from this compound analogue echoes signal, forming three road signals is respectively: analogue echoes signal, line locking signal, and frame synchronizing signal, adopt voltage comparator to extract the line locking signal synchronizing separator circuit 220 in, reach frame synchronizing signal.It realizes electrical block diagram as shown in Figure 6, adopt described synchronizing separator circuit 220 to comprise the second voltage comparator U2, tertiary voltage comparator U3, reach and bilateral diode amplitude limiter circuit D1, the positive input of the voltage of described second voltage comparator U2 and tertiary voltage comparator U3 all is connected to the outfan of wireless receiving circuit 210.Adopting model in the present embodiment is the bilateral diode amplitude limiter circuit D1 of L1SS266LT1.During specific implementation, for example, referring to shown in Figure 4, the reference voltage a that the second voltage comparator U2 is set is that 1.0V is used to extract line locking signal 12; The reference circuit b that tertiary voltage comparator U3 is set again is 2.0V, is used to extract frame synchronizing signal 13.And setting is extracted analogue echoes signal 11 by a two-way diode limiting circuit D1.
As shown in Figure 2, echo circuit 240 is connected with synchronizing separator circuit 220, is used for receiving the analogue echoes signal that synchronizing separator circuit 220 is separated.
Amplifying circuit 250 is connected with echo circuit 240, is used for receiving described analogue echoes signal from echo circuit 240, and the analogue echoes signal that receives is amplified.
Analog to digital conversion circuit 260 is connected with amplifying circuit 250, is used for transferring the analogue echoes signal after amplifying to the echo digital signal.
Among the present invention through supercircuit 160 will the line locking signal, and frame synchronizing signal be added on the analogue echoes signal with asynchronous communication means, produce compound analogue echoes signal, carry out wireless transmit by radio transmitter again, the receiving terminal main frame can nondestructively receive this compound analogue echoes signal, and then pass through, synchronizing separator circuit 220 is separated line locking signal and frame synchronizing signal from this compound analogue echoes signal, form three road signals and be respectively: analogue echoes signal, line locking signal, and frame synchronizing signal.Make the ultrasonoscopy that shows at DSC display circuit 270 very clear, can avoid producing the loss of signal.
Among the present invention, described line locking signal is the synchronizing signal of every line in the width of cloth ultrasonoscopy, represents the time of every line sweep; Described frame synchronizing signal is for showing the time of a frame ultrasonoscopy.
Therefore, the B ultrasonic instrument of the band wireless probe of the embodiment of the invention, it realizes that main frame is connected the employing Wireless transmission mode with probe, probe no longer is subjected to pining down of connecting line, has enlarged the scope of application, operates also very convenient; Improved the service efficiency of B ultrasonic instrument.
Based on the foregoing description, the embodiment of the invention also provides a kind of B ultrasonic instrument implementation method with wireless probe, as shown in Figure 5, comprises step:
The main control MCU 110 of S510, wireless probe 100 produces motor drive signal, transmitted pulse signal, time sensitivity control signal, line locking signal, reaches frame synchronizing signal; Referring to Fig. 1, specifically as mentioned above.Wherein, described line locking signal is the synchronizing signal of every line in the width of cloth ultrasonoscopy, represents the time of every line sweep; Described frame synchronizing signal is for showing the time of a frame ultrasonoscopy.
The radiating circuit 130 of S520, wireless probe 100 obtains described transmitted pulse signal from main control MCU110, and produces transmitted pulse according to described transmitted pulse signal, referring to Fig. 1, specifically as mentioned above.
The echo receiving circuit 150 of S530, wireless probe 100 amplifies the analogue echoes signal that transmitted pulse reflects, referring to Fig. 1, specifically as mentioned above.
The supercircuit 150 of S540, wireless probe 100 obtains the line locking signal from the line locking signal output part 111 of main control MCU 110, and obtain frame synchronizing signal from the frame synchronizing signal outfan 112 of main control MCU 110, and the line locking signal, and frame synchronizing signal be added on the analogue echoes signal with asynchronous communication means, produce compound analogue echoes signal; Referring to Fig. 1, specifically as mentioned above.
Supercircuit by probe among the present invention is loaded into frame synchronizing signal on the line locking signal, and the amplitude of control line synchronizing signal is less than the secondary degree of frame synchronizing signal.
S550, main frame 200 receive described compound analogue echoes signal, separated in synchronization from compound analogue echoes signal is come out line locking signal and frame synchronizing signal, and should isolated line locking signal and frame synchronizing signal be treated to segmental line locking signal and frame synchronizing signal respectively, and the echo module by signal is converted to the echo digital signal; And segmental line locking signal and frame synchronizing signal be loaded on the echo digital signal, the ultrasonoscopy that carries out the echo digital signal shows, referring to Fig. 1, specifically as mentioned above.
Wherein, described step S550 specifically comprises:
The wireless receiving circuit 210 of E1, main frame 200 receives the compound analogue echoes signal that radio transmitter sends by wireless transmission method, referring to Fig. 2, specifically as mentioned above.
E2, the synchronizing separator circuit 220 by main frame 200 obtain compound echo-signal from wireless receiving circuit 210, and line locking signal and frame synchronizing signal separated from this compound analogue echoes signal, forming three road signals is respectively: analogue echoes signal, line locking signal, and frame synchronizing signal, referring to Fig. 2, specifically as mentioned above.
The echo circuit 240 of E3, main frame 200 receives the analogue echoes signal of separating in the synchronizing separator circuit 220, and this analogue echoes signal is amplified by amplifying circuit 250, is converted to the echo digital signal by analog to digital conversion circuit 260 again; Simultaneously, the FPGA 230 of main frame obtains described line locking signal and frame synchronizing signal from synchronizing separator circuit 220, and this line locking signal that obtains and frame synchronizing signal be treated to segmental line locking signal and frame synchronizing signal respectively, referring to Fig. 1, specifically as mentioned above.
The DSC display circuit 270 of E4, main frame 200 receives described echo digital signal from analog to digital conversion circuit 260, and receive described segmental line locking signal and frame synchronizing signal from FPGA, and segmental line locking signal and frame synchronizing signal be loaded on the echo digital signal, the ultrasonoscopy that carries out the echo digital signal shows, referring to Fig. 1, specifically as mentioned above.
According to the amplitude of line locking signal secondary degree, line locking signal and frame synchronizing signal are extracted from compound analogue echoes signal one by one by a comparator less than frame synchronizing signal.
In sum, B ultrasonic instrument and its implementation of band wireless probe provided by the present invention, owing to obtain line locking signal and frame synchronizing signal from main control MCU by supercircuit, and the line locking signal, and frame synchronizing signal be added on the analogue echoes signal with asynchronous communication means, produce compound analogue echoes signal; Adopt Asynchronous Transfer Mode again, compound analogue echoes signal is sent to main frame by wireless signal; Improve the stability of signal transmission, prevented the loss of low frequency signal effectively, improved the quality of signal transmission; And main frame is connected the employing Wireless transmission mode with probe, probe no longer is subjected to pining down of connecting line, has enlarged the scope of application, operates also very convenient; Improved the service efficiency of B ultrasonic instrument.
In addition, the present invention is also according to the amplitude of the line locking signal secondary degree less than frame synchronizing signal, by a comparator line locking signal and frame synchronizing signal are extracted from compound analogue echoes signal one by one, the line locking signal and the frame synchronizing signal performance that extract like this are highly stable, like this and after being loaded into segmental line locking signal and frame synchronizing signal on the echo digital signal, the echo digital signal ultrasonoscopy that shows, very clear, provide users with the convenient
Should be understood that application of the present invention is not limited to above-mentioned giving an example, for those of ordinary skills, can be improved according to the above description or conversion that all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (10)
1. the B ultrasonic instrument with wireless probe is characterized in that, comprises main frame, the wireless probe that adopts wireless transmission method to be connected with host communication;
Described wireless probe comprises:
Main control MCU is used to produce motor drive signal, transmitted pulse signal, time sensitivity control signal, line locking signal, reaches frame synchronizing signal;
The motor-drive circuit that is connected with main control MCU is used for obtaining described motor drive signal from main control MCU, and drives the rotation of probe motor according to described motor drive signal;
The radiating circuit that is connected with main control MCU is used for obtaining described transmitted pulse signal from main control MCU, and produces transmitted pulse according to described transmitted pulse signal;
The echo receiving circuit that is connected with motor-drive circuit, radiating circuit, time sensitivity control circuit respectively, the analogue echoes signal that is used for transmitted pulse is reflected amplifies;
The time sensitivity control circuit that input is connected with main control MCU, outfan is connected with the echo receiving circuit is used to control the gain of analogue echoes signal, and the near field is weakened, and the far field is strengthened;
The supercircuit that is connected with main control MCU with the echo receiving circuit respectively, be used for obtaining the line locking signal from the line locking signal output part of main control MCU, and obtain frame synchronizing signal from the frame synchronizing signal outfan of main control MCU, and the line locking signal, and frame synchronizing signal be added on the analogue echoes signal with asynchronous communication means, produce compound analogue echoes signal;
The radio transmitter that is connected with supercircuit is used for compound analogue echoes signal is adopted Asynchronous Transfer Mode, sends to main frame by wireless signal;
Described main frame is used to receive described compound analogue echoes signal, separated in synchronization from compound analogue echoes signal is come out line locking signal and frame synchronizing signal, and should isolated line locking signal and frame synchronizing signal be treated to segmental line locking signal and frame synchronizing signal respectively, and the echo module by signal is converted to the echo digital signal; And segmental line locking signal and frame synchronizing signal be loaded on the echo digital signal, the ultrasonoscopy that carries out the echo digital signal shows.
2. according to the B ultrasonic instrument of the described band wireless probe of claim 1, it is characterized in that described main frame comprises:
Wireless receiving circuit is used to receive the compound analogue echoes signal that radio transmitter sends by wireless transmission method;
The synchronizing separator circuit that is connected with wireless receiving circuit, be used for obtaining compound echo-signal from wireless receiving circuit, and line locking signal and frame synchronizing signal separated from this compound analogue echoes signal, form three road signals and be respectively: analogue echoes signal, line locking signal, and frame synchronizing signal;
The echo circuit that is connected with synchronizing separator circuit is used for receiving the analogue echoes signal that synchronizing separator circuit is separated;
The amplifying circuit that is connected with echo circuit is used for receiving described analogue echoes signal from echo circuit, and the analogue echoes signal that receives is amplified;
The analog to digital conversion circuit that is connected with amplifying circuit is used for transferring the analogue echoes signal after amplifying to the echo digital signal;
The FPGA that is connected with synchronizing separator circuit is used for obtaining described line locking signal and frame synchronizing signal from synchronizing separator circuit, and this line locking signal that obtains and frame synchronizing signal are treated to segmental line locking signal and frame synchronizing signal respectively;
The DSC display circuit that is connected with analog to digital conversion circuit, be used for receiving described echo digital signal from analog to digital conversion circuit, and receive described segmental line locking signal and frame synchronizing signal from FPGA, and segmental line locking signal and frame synchronizing signal be loaded on the echo digital signal, the ultrasonoscopy that carries out the echo digital signal shows.
3. according to the B ultrasonic instrument of the described band wireless probe of claim 1, it is characterized in that described supercircuit also is used for frame synchronizing signal is loaded into the line locking signal, and the amplitude of control line synchronizing signal is less than the secondary degree of frame synchronizing signal.
4. according to the B ultrasonic instrument of the described band wireless probe of claim 1, it is characterized in that, described supercircuit comprises: one first voltage comparator, the first input end difference of described first voltage comparator: be connected with the line locking signal output part of main control MCU, be connected with the frame synchronizing signal outfan of main control MCU, be connected with the echo receiving circuit by the 3rd resistance by second resistance by first resistance;
Second input difference of described first voltage comparator: be connected with a positive working power by the 4th resistance, be connected with a negative working power by the 5th resistance;
The outfan of described first voltage comparator is connected with radio transmitter; And between the outfan of described first voltage comparator and first input end the 6th resistance in parallel and first electric capacity.
5. according to the B ultrasonic instrument of each described band wireless probe of claim 1-4, it is characterized in that described line locking signal is the synchronizing signal of every line in the width of cloth ultrasonoscopy, represent the time of every line sweep;
Described frame synchronizing signal is for showing the time of a frame ultrasonoscopy.
6. the B ultrasonic instrument implementation method with wireless probe is characterized in that, comprises step:
The main control MCU of A, wireless probe produces motor drive signal, transmitted pulse signal, time sensitivity control signal, line locking signal, reaches frame synchronizing signal;
The radiating circuit of B, wireless probe obtains described transmitted pulse signal from main control MCU, and produces transmitted pulse according to described transmitted pulse signal;
The echo receiving circuit of C, wireless probe amplifies the analogue echoes signal that transmitted pulse reflects;
The supercircuit of D, wireless probe obtains the line locking signal from the line locking signal output part of main control MCU, and obtain frame synchronizing signal from the frame synchronizing signal outfan of main control MCU, and the line locking signal, and frame synchronizing signal be added on the analogue echoes signal with asynchronous communication means, produce compound analogue echoes signal;
E, main frame receive described compound analogue echoes signal, separated in synchronization from compound analogue echoes signal is come out line locking signal and frame synchronizing signal, and should isolated line locking signal and frame synchronizing signal be treated to segmental line locking signal and frame synchronizing signal respectively, and the echo module by signal is converted to the echo digital signal; And segmental line locking signal and frame synchronizing signal be loaded on the echo digital signal, the ultrasonoscopy that carries out the echo digital signal shows.
7. according to the B ultrasonic instrument implementation method of the described band wireless probe of claim 6, it is characterized in that described step e specifically comprises:
The wireless receiving circuit of E1, main frame receives the compound analogue echoes signal that radio transmitter sends by wireless transmission method;
E2, the synchronizing separator circuit by main frame obtain compound echo-signal from wireless receiving circuit, and line locking signal and frame synchronizing signal separated from this compound analogue echoes signal, form three road signals and be respectively: analogue echoes signal, line locking signal, and frame synchronizing signal;
The echo circuit of E3, main frame receives the analogue echoes signal of separating in the synchronizing separator circuit, and this analogue echoes signal is amplified by amplifying circuit, is converted to the echo digital signal by analog to digital conversion circuit again; Simultaneously, the FPGA of main frame obtains described line locking signal and frame synchronizing signal from synchronizing separator circuit, and this line locking signal that obtains and frame synchronizing signal are treated to segmental line locking signal and frame synchronizing signal respectively;
The DSC display circuit of E4, main frame receives described echo digital signal from analog to digital conversion circuit, and receive described segmental line locking signal and frame synchronizing signal from FPGA, and segmental line locking signal and frame synchronizing signal be loaded on the echo digital signal, the ultrasonoscopy that carries out the echo digital signal shows.
8. according to the B ultrasonic instrument implementation method of the described band wireless probe of claim 6, it is characterized in that, described step D also comprises: the supercircuit by probe is loaded into frame synchronizing signal on the line locking signal, and the amplitude of control line synchronizing signal is less than the secondary degree of frame synchronizing signal.
9. the B ultrasonic instrument implementation method of described according to Claim 8 band wireless probe, it is characterized in that, described step e also comprises, according to the amplitude of line locking signal secondary degree, line locking signal and frame synchronizing signal are extracted from compound analogue echoes signal one by one by second voltage comparator and tertiary voltage comparator less than frame synchronizing signal.
10. according to the B ultrasonic instrument implementation method of each described band wireless probe of claim 6-9, it is characterized in that described line locking signal is the synchronizing signal of every line in the width of cloth ultrasonoscopy, represent the time of every line sweep;
Described frame synchronizing signal is for showing the time of a frame ultrasonoscopy.
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| CN105147322A (en) * | 2015-10-14 | 2015-12-16 | 苏州斯科特医学影像科技有限公司 | Handheld miniature 8-channel WIFI probe |
| CN109632970A (en) * | 2018-11-16 | 2019-04-16 | 中聚科技股份有限公司 | It is a kind of for encode ultrasound single channel ultrasound pulse transmission and echo amplification system |
| CN111408075A (en) * | 2020-03-23 | 2020-07-14 | 南京广慈医疗科技有限公司 | High-intensity focused ultrasound diagnosis and treatment system with temperature measurement function and control method thereof |
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| CN102247167B (en) | 2013-02-13 |
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