CN203758963U - Ultrasonic signal detection device - Google Patents
Ultrasonic signal detection device Download PDFInfo
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- CN203758963U CN203758963U CN201420069970.2U CN201420069970U CN203758963U CN 203758963 U CN203758963 U CN 203758963U CN 201420069970 U CN201420069970 U CN 201420069970U CN 203758963 U CN203758963 U CN 203758963U
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- signal
- ultrasonic
- ultrasonic transducer
- amplification circuit
- pick
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- 238000001514 detection method Methods 0.000 title abstract description 11
- 230000003321 amplification Effects 0.000 claims abstract description 25
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 230000005284 excitation Effects 0.000 claims description 19
- 238000005086 pumping Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000002604 ultrasonography Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000003534 oscillatory effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000001631 haemodialysis Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000000700 radioactive tracer Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model provides an ultrasonic signal detection device. The device comprises a drive signal generator, an ultrasonic transducer, a signal amplification circuit and a signal conversion circuit, wherein the drive signal generator is connected with the ultrasonic transducer by a signal line; the drive signal generator generates an ultrasonic frequency drive signal and sends the ultrasonic frequency drive signal to the ultrasonic transducer; the ultrasonic transducer comprises a transmission device and a receiving device; the transmission device is used for sending an ultrasonic signal to a medium to be detected according to the received ultrasonic frequency drive signal; the receiving device is used for receiving the ultrasonic signal passing through the medium to be detected, converting the received ultrasonic signal into an electric signal, and sending the electric signal to the signal amplification circuit; the signal amplification circuit is connected with the receiving device by a signal line and is used for amplifying the electric signal and sending the amplified electric signal to the signal conversion circuit; and the signal conversion circuit is connected with the signal amplification circuit by a signal line and is used for converting the amplified electric signal to a direct-current signal and sending the direct-current signal to the drive signal generator.
Description
Technical field
The utility model is about a kind of ultrasonic detection technology, particularly, is about a kind of ultrasonic signal pick-up unit.
Background technology
In the process reclaiming at autoblood, need the state of real-time signal piping medium, in the time there is air in medium, need to process accordingly according to duty at that time, remove the air of medium, in case major structure becomes great malpractice.So, how to detect accurately in medium whether have air, become the current significant problem facing.
Utility model content
The fundamental purpose of the utility model embodiment is to provide a kind of ultrasonic signal pick-up unit, with the state of signal piping medium.
To achieve these goals, the utility model embodiment provides a kind of ultrasonic signal pick-up unit, described ultrasonic signal pick-up unit comprises: excitation signal generator, ultrasonic transducer, signal amplification circuit and signal conversion circuit, wherein, described excitation signal generator is connected by signal wire with described ultrasonic transducer, described excitation signal generator produces a ultrasonic frequency pumping signal, and sends described ultrasonic frequency pumping signal to described ultrasonic transducer; Described ultrasonic transducer comprises: emitter and receiving trap, and described emitter sends ultrasonic signal according to the described ultrasonic frequency pumping signal receiving to testing medium; Described receiving trap receives the ultrasonic signal after described testing medium, and sends to described signal amplification circuit after the ultrasonic signal receiving is converted to electric signal; Described signal amplification circuit connects described receiving trap by signal wire, after described electric signal is amplified, is sent to described signal conversion circuit; Described signal conversion circuit connects described signal amplification circuit by signal wire, is sent to described excitation signal generator after the described electric signal after amplifying is converted to direct current signal.
In one embodiment, above-mentioned ultrasonic signal pick-up unit also comprises: analog line driver, be connected between described excitation signal generator and ultrasonic transducer, described analog line driver carries out described ultrasonic frequency pumping signal to send to described ultrasonic transducer after power amplification.
Particularly, the amplifier element in above-mentioned signal amplification circuit is amplifier NE5532.
Particularly, above-mentioned analog line driver is Technitron 1815.
The beneficial effects of the utility model are, in the process that ultrasonic signal pick-up unit of the present utility model can reclaim at autoblood, and the state of signal piping medium in real time.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is according to the structural representation of the ultrasonic detection device of the utility model embodiment;
Fig. 2 is according to the structural representation of the amplifier circuit of the utility model embodiment;
Fig. 3 is another structural representation according to the ultrasonic detection device of the utility model embodiment;
Fig. 4 is according to the structural representation of the ultrasonic bubble detection system of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment provides a kind of ultrasonic signal pick-up unit.Below in conjunction with accompanying drawing, the utility model is elaborated.
As shown in Figure 1, this ultrasonic signal pick-up unit 10 comprises: excitation signal generator 101, ultrasonic transducer 102, signal amplification circuit 103 and signal conversion circuit 104, wherein:
Excitation signal generator 101 is connected by signal wire with ultrasonic transducer 102, and excitation signal generator 101 produces a ultrasonic frequency pumping signal, and sends this ultrasonic frequency pumping signal to ultrasonic transducer 102; In practical application, above-mentioned excitation signal generator 101 can adopt pulse signal generator or resistance-capacitance network oscillatory circuit, and this pulse signal generator or resistance-capacitance network oscillatory circuit are the conventional equipment in this area or circuit structure, do not repeat them here.
Ultrasonic transducer 102 comprises: emitter and receiving trap, and the ultrasonic frequency pumping signal that the emitter of ultrasonic transducer 102 sends according to excitation signal generator 101 produces a ultrasonic signal, and sends this ultrasonic signal to testing medium; The receiving trap of ultrasonic transducer 102 receives the ultrasonic signal after testing medium, and sends to signal amplification circuit 103 after the ultrasonic signal receiving is converted to electric signal.In practical application, the electric signal that the receiving trap of ultrasonic transducer 102 generates ultrasonic signal conversion is millivolt level, owing to being easy to cause decay and the distortion of electric signal in transmitting procedure, therefore, for avoiding signal attenuation and distortion to cause testing result inaccurate, in the utility model embodiment, by this signal amplification circuit 103, electric signal is amplified.Amplifying circuit must be considered signal bandwidth problem, to avoid distorted signals.In the utility model embodiment, be to adopt the NE5532 of AD company high performance amplifier as amplifier element (as shown in Figure 2), auxiliary other device settling signal enlarging function.It should be noted that, above-mentioned NE5532 high performance amplifier is only for illustrating, and not only can adopt NE5532 high performance amplifier as amplifier element in order to the amplifying circuit 103 limiting in the utility model.
Signal amplification circuit 103 is connected with the receiving trap of ultrasonic transducer 102 by signal wire, and the electric signal after amplifying is sent to signal conversion circuit 104.Electric signal after above-mentioned amplifying circuit 103 amplifies is AC signal, its amplitude relevant with the state of testing medium (liquid, gas or gas-liquid ratio), for ease of carry out more efficiently identification judgement for this signal, AC signal need to be converted to direct current signal.Therefore, the ultrasonic signal pick-up unit 10 of the utility model embodiment also comprises signal conversion circuit 104, so that signal is transformed to direct current signal by AC signal.Signal conversion circuit 104 connects signal amplification circuit 103 by signal wire, and the electric signal after amplifying is sent to excitation signal generator 101 after being converted to direct current signal.
In actual applications, the ultrasonic frequency pumping signal of exporting due to excitation signal generator 101 a little less than, only has a milliampere level, the ultrasonic frequency pumping signal of its output likely cannot drive ultrasonic transducer to produce stronger ultrasonic signal, therefore, as shown in Figure 3, the ultrasonic detection device 10 of the utility model embodiment also can comprise an analog line driver 105, be connected between excitation signal generator 101 and ultrasonic transducer 102 by signal wire, carry out power amplification in order to the ultrasonic frequency pumping signal that excitation signal generator 101 is exported, and send to ultrasonic transducer 102.In the present embodiment, be to adopt Technitron 1815 as analog line driver 105, ultrasonic frequency pumping signal is carried out to power amplification, its bandwidth is 80MHz.It should be noted that, above-mentioned Technitron 1815 is only for illustrating, and not only can adopt Technitron 1815 to carry out power amplification to ultrasonic frequency pumping signal in order to the analog line driver 105 limiting in the utility model.
In sum, by the ultrasonic detection device of the utility model embodiment, can need to carry out power drive and amplification to the signal in ultrasound examination according to actual transmission, ensure the stability of ultrasonic signal in transmitting procedure, preferably detect effect thereby reach.
Below in conjunction with an application example, the ultrasonic signal pick-up unit of the utility model embodiment is described.
At medical instruments field, utilize the technology of bubble in ultrasound examination tracer liquid pipeline be widely used in such as the metering in syringe pump, infusion pump, haemodialysis control unit, self-blood reclaiming device, transfusion system or heart-lung machine and pharmacy and industry and move liquid titration apparatus etc.As shown in Figure 4, the ultrasonic bubble detection system that is applied to above-mentioned each medicine equipment mainly comprises: master control borad, frequency converter and centrifugal motor, LCD show touch-screen, supply unit, stepper motor and driver, ultrasonic signal pick-up unit and printer.
Wherein, the CPU (central processing unit) of this master control borad is W77E516, realize above-mentioned frequency converter and centrifugal motor, LCD are shown to touch-screen by this master control borad, supply unit, stepper motor and driver, the control function of ultrasonic signal pick-up unit and printer, and receive the instruction being fed back to by LCD demonstration touch-screen, above-mentioned control is the common technology means of this area, repeats no more.
This ultrasonic bubble detection system mainly overcomes signal attenuation and the problem of dtmf distortion DTMF in the signals transmission of ultrasound examination by the ultrasonic signal pick-up unit of application the utility model embodiment, to improve the accuracy of ultrasound examination.
The analysis of ultrasonic bubble testing result and signal dynamics are adjusted function and are realized by the single-chip microcomputer MEGA88 being positioned on master control borad, send testing result to CPU (central processing unit) W77E516 by LED1 pin, and indication LED shows detected state simultaneously.
Above-mentioned supply unit comprises transformer and current rectifying and wave filtering circuit, in order to the DC voltage of 5V, 12V ,-12V and 41V to be provided to system.
In clinical practice, make ultrasonic transducer be operated in optimum condition by above-mentioned ultrasonic bubble detection system, to whether existing bubble accurately to detect in medicine equipment pipeline.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiment of the utility model; and be not used in limit protection domain of the present utility model; all within spirit of the present utility model and principle, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. a ultrasonic signal pick-up unit, is characterized in that, described ultrasonic signal pick-up unit comprises: excitation signal generator, ultrasonic transducer, signal amplification circuit and signal conversion circuit, wherein,
Described excitation signal generator is connected by signal wire with described ultrasonic transducer, and described excitation signal generator produces a ultrasonic frequency pumping signal, and sends described ultrasonic frequency pumping signal to described ultrasonic transducer;
Described ultrasonic transducer comprises: emitter and receiving trap, and described emitter sends ultrasonic signal according to the described ultrasonic frequency pumping signal receiving to testing medium; Described receiving trap receives the ultrasonic signal after described testing medium, and sends to described signal amplification circuit after the ultrasonic signal receiving is converted to electric signal;
Described signal amplification circuit connects described receiving trap by signal wire, after described electric signal is amplified, is sent to described signal conversion circuit;
Described signal conversion circuit connects described signal amplification circuit by signal wire, is sent to described excitation signal generator after the described electric signal after amplifying is converted to direct current signal.
2. ultrasonic signal pick-up unit according to claim 1, is characterized in that, described ultrasonic signal pick-up unit also comprises:
Analog line driver, is connected between described excitation signal generator and ultrasonic transducer, and described analog line driver carries out described ultrasonic frequency pumping signal to send to described ultrasonic transducer after power amplification.
3. ultrasonic signal pick-up unit according to claim 1, is characterized in that, the amplifier element in described signal amplification circuit is amplifier NE5532.
4. ultrasonic signal pick-up unit according to claim 2, is characterized in that, described analog line driver is Technitron 1815.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420069970.2U CN203758963U (en) | 2014-02-18 | 2014-02-18 | Ultrasonic signal detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420069970.2U CN203758963U (en) | 2014-02-18 | 2014-02-18 | Ultrasonic signal detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203758963U true CN203758963U (en) | 2014-08-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420069970.2U Expired - Lifetime CN203758963U (en) | 2014-02-18 | 2014-02-18 | Ultrasonic signal detection device |
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| Country | Link |
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| CN (1) | CN203758963U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106075668A (en) * | 2016-08-12 | 2016-11-09 | 董稳 | Air detection device in a kind of infusion pipeline |
| CN106999236A (en) * | 2014-12-08 | 2017-08-01 | 奥林匹斯冬季和Ibe有限公司 | Combined ultrasonic ripple and HF surgery systems and its control device and method |
| CN113504307A (en) * | 2021-09-10 | 2021-10-15 | 西南石油大学 | Multi-frequency core sound velocity measuring device |
-
2014
- 2014-02-18 CN CN201420069970.2U patent/CN203758963U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106999236A (en) * | 2014-12-08 | 2017-08-01 | 奥林匹斯冬季和Ibe有限公司 | Combined ultrasonic ripple and HF surgery systems and its control device and method |
| CN106075668A (en) * | 2016-08-12 | 2016-11-09 | 董稳 | Air detection device in a kind of infusion pipeline |
| CN113504307A (en) * | 2021-09-10 | 2021-10-15 | 西南石油大学 | Multi-frequency core sound velocity measuring device |
| CN113504307B (en) * | 2021-09-10 | 2021-12-21 | 西南石油大学 | Multi-frequency core sound velocity measuring device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |
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| CX01 | Expiry of patent term |