CN201535683U - Drive circuit of piezoelectric supersonic transducer - Google Patents
Drive circuit of piezoelectric supersonic transducer Download PDFInfo
- Publication number
- CN201535683U CN201535683U CN2009202502134U CN200920250213U CN201535683U CN 201535683 U CN201535683 U CN 201535683U CN 2009202502134 U CN2009202502134 U CN 2009202502134U CN 200920250213 U CN200920250213 U CN 200920250213U CN 201535683 U CN201535683 U CN 201535683U
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- analog switch
- circuit
- electronic analog
- integrated electronic
- drive circuit
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- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The utility model relates to a drive circuit of a piezoelectric supersonic transducer, which includes a drive circuit connected to a piezoelectric supersonic transducer control circuit, and the drive circuit is an integrated electronic analog switch, whose input control end IN is directly inputted with a pulse control signal with same frequency of the ultrasonic, and the NO end of the integrated electronic analog switch is connected to the anode Vcc of the power supply, and the NC end of the integrated electronic analog switch is connected to the cathode GND of the power supply, and the COM end of the integrated electronic analog switch is connected to the supersonic transducer loop and directly outputs ultrasonic pulse voltage signals in a high-current state. The circuit can be driven by a tiny drive current, and the internal resistance of the circuit is small and the output efficiency is high. Because the integrated circuit is used, the computer I/O pin can be directly driven, and the amplitude and frequency of the generated ultrasonic signal are very accurate for forming a ultrasound pulse string output with good circuit consistency, and the utility model is suitable for mass production.
Description
Technical field
The utility model relates to a kind of driving circuit of detection of electrons surveying instrument, particularly a kind of driving circuit of piezoelectric ultrasonic transducer.
Background technology
The ball bearing made using that the employed ultrasonic transducer drive circuit of current ultrasonic flow meter mostly is to use discrete component to form generally is to drive by power controlling field effect transistor or large power triode, uses transformer to improve driving voltage then.The defective of this simple designs mainly contains 3 points: a control end electric current that is to use power field effect pipe or large power triode to need is bigger, wayward; The 2nd, the internal resistance of power field effect pipe or large power triode is bigger, and drive signal consumes on driving circuit too much, and efficient is very low; The 3rd, the non-constant of high-power circuit design consistance of discrete component is not suitable for producing in batches.
Summary of the invention
In view of the deficiency that prior art exists, the utility model provides a kind of driving circuit of piezoelectric ultrasonic transducer.Adopt electronic analog swtich to switch the circuit that the high-power ultrasonics emission drives, transmit for ultrasonic transducer provides the large power supersonic pulse in 0.1A～1.8A scope.
The utility model for achieving the above object, the technical scheme that is adopted is: a kind of driving circuit of piezoelectric ultrasonic transducer, comprise the driving circuit that is connected with the piezoelectric ultrasonic transducer control circuit, it is characterized in that: described driving circuit is one road integrated electronic analog switch, the input control end IN of integrated electronic analog switch directly imports hyperacoustic with the frequency pulse control signal, the anodal Vcc of the N0 termination power of integrated electronic analog switch, the negative pole GND of the NC termination power of integrated electronic analog switch, the ultrasonic pulse voltage signal of current state is directly exported in the COM termination ultrasonic transducer loop of integrated electronic analog switch.
The beneficial effects of the utility model are: this circuit can use very little drive current to drive, and the circuit internal resistance is very little, the output efficiency height.Owing to adopted integrated circuit, can make Computer I/O pin directly drive this circuit, the amplitude and the frequency that produce ultrasonic signal are very accurate, can form the output of ultrasonic pulse string, and the high conformity of circuit, are suitable for producing in batches.
Description of drawings:
Fig. 1 is circuit theory diagrams of the present utility model.
Fig. 2 is an application example schematic diagram of the present utility model.
Embodiment
As shown in Figure 1, the driving circuit of piezoelectric ultrasonic transducer, comprise the driving circuit that is connected with the piezoelectric ultrasonic transducer control circuit, driving circuit is one road integrated electronic analog switch, the input control end IN of integrated electronic analog switch directly inserts hyperacoustic with the frequency pulse control signal, the anodal VCC of the N0 termination power of integrated electronic analog switch, the negative pole GND of the NC termination power of integrated electronic analog switch, the ultrasonic pulse voltage signal of current state is directly exported in the COM termination ultrasonic transducer loop of integrated electronic analog switch.
Wherein about the choosing of integrated electronic analog switch, need select the little electronic analog swtich of conducting resistance for use, the conducting resistance of integrated electronic analog switch is less than 1 Ω usually, maximum continuous current will ± more than the 100mA, immediate current can reach ± more than the 300mA.The effect of the integrated electronic analog swtich of this class is much better than the electronic analog swtich element of being made up of various discrete components.As shown in Figure 2, the integrated electronic analog switch is selected model MAX4714 for use, the control end 1 pin IN of electronic analog swtich is connected with the single-chip processor i/o pin in the piezoelectric ultrasonic transducer control circuit, comprising frequency by the input of single-chip processor i/o pin is 300kHz, 20 square-wave pulses of 50% dutycycle, 2 pin V+ of integrated electronic analog switch meet positive source 3.0V, 3 pin meet power cathode GND, 6 pin input pin NO are connected with positive source 3.0V, another input pin 4 pin NC are connected with power cathode GND, the 5 pin COM end and a no-load voltage ratio of integrated electronic analog switch is that 20: 300 primary IN1 pin links to each other, transformer IN2 pin is connected with power cathode GND, and transformer secondary output connects the ultrasonic transducer loop.Like this, at the secondary output 300kHz of transformer, peak value is about the AC driving signal of 100V, can drive the ultrasound wave that ultrasonic transducer is launched 300kHz.Utilize the system controlled by computer electronic analog swtich to produce the large power supersonic train of impulses, directly or indirectly promote ultrasonic transducer and carry out the series impulse emission.Every string can comprise 1 to 350 ultrasonic pulse.
Claims (1)
1. the driving circuit of a piezoelectric ultrasonic transducer, comprise the driving circuit that is connected with the piezoelectric ultrasonic transducer control circuit, it is characterized in that: described driving circuit is the integrated electronic analog switch, the input control end IN of integrated electronic analog switch directly imports hyperacoustic with the frequency pulse control signal, the anodal Vcc of the N0 termination power of integrated electronic analog switch, the negative pole GND of the NC termination power of integrated electronic analog switch, the ultrasonic pulse voltage signal of current state is directly exported in the COM termination ultrasonic transducer loop of integrated electronic analog switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202502134U CN201535683U (en) | 2009-11-12 | 2009-11-12 | Drive circuit of piezoelectric supersonic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202502134U CN201535683U (en) | 2009-11-12 | 2009-11-12 | Drive circuit of piezoelectric supersonic transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201535683U true CN201535683U (en) | 2010-07-28 |
Family
ID=42535462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202502134U Expired - Lifetime CN201535683U (en) | 2009-11-12 | 2009-11-12 | Drive circuit of piezoelectric supersonic transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201535683U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109069102A (en) * | 2016-03-31 | 2018-12-21 | 蝴蝶网络有限公司 | More level bipolar pulse generators |
| CN109269627A (en) * | 2018-11-16 | 2019-01-25 | 中国计量大学 | A kind of dynamic piezoelectric transducer resonant state on-line checking circuit and method |
| CN112152505A (en) * | 2020-05-27 | 2020-12-29 | 北京机械设备研究所 | Drive circuit and speed regulation method of ultrasonic motor |
| US11061125B2 (en) | 2016-03-31 | 2021-07-13 | Butterfly Network, Inc. | Symmetric receiver switch for bipolar pulser |
-
2009
- 2009-11-12 CN CN2009202502134U patent/CN201535683U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109069102A (en) * | 2016-03-31 | 2018-12-21 | 蝴蝶网络有限公司 | More level bipolar pulse generators |
| US11061125B2 (en) | 2016-03-31 | 2021-07-13 | Butterfly Network, Inc. | Symmetric receiver switch for bipolar pulser |
| CN109069102B (en) * | 2016-03-31 | 2021-07-23 | 蝴蝶网络有限公司 | Multi-level bipolar pulse generator |
| US11294044B2 (en) | 2016-03-31 | 2022-04-05 | Bfly Operations, Inc. | Multilevel bipolar pulser |
| US11768282B2 (en) | 2016-03-31 | 2023-09-26 | BFLY Operations, Inc | Multilevel bipolar pulser |
| CN109269627A (en) * | 2018-11-16 | 2019-01-25 | 中国计量大学 | A kind of dynamic piezoelectric transducer resonant state on-line checking circuit and method |
| CN112152505A (en) * | 2020-05-27 | 2020-12-29 | 北京机械设备研究所 | Drive circuit and speed regulation method of ultrasonic motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100728 |