CN220678471U - Ultrasonic driving circuit, driving module, circuit board and electronic equipment - Google Patents
Ultrasonic driving circuit, driving module, circuit board and electronic equipment Download PDFInfo
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- CN220678471U CN220678471U CN202322213321.7U CN202322213321U CN220678471U CN 220678471 U CN220678471 U CN 220678471U CN 202322213321 U CN202322213321 U CN 202322213321U CN 220678471 U CN220678471 U CN 220678471U
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- 230000006698 induction Effects 0.000 claims abstract description 25
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- 230000005540 biological transmission Effects 0.000 description 2
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- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The application discloses ultrasonic drive circuit, circuit board and electronic equipment relates to drive technical field, includes: an ultrasonic driving circuit for outputting a driving signal; the transformer is used for boosting the driving signal; the ultrasonic induction loop is used for generating ultrasonic waves through the boosted driving signals; the power supply closed loop is provided with a relay, a normally open contact of the relay is arranged on the ultrasonic induction loop, and the power supply closed loop is used for switching on or switching off the ultrasonic induction loop through the normally open contact of the relay; the control module is respectively and electrically connected with the ultrasonic driving loop and the power supply closed loop, and is used for outputting PWM signals to the ultrasonic driving loop so as to enable the ultrasonic driving loop to output driving signals, and is also used for outputting level signals so as to enable the switch of the relay to be turned on or turned off. The ultrasonic driving safety can be improved, the whole circuit is more stable, and the reliability is high.
Description
Technical Field
The application relates to the technical field of driving, in particular to an ultrasonic driving circuit, a driving module, a circuit board and electronic equipment.
Background
In the related art, ultrasonic waves are sound waves with the frequency higher than 20KHZ, have good directivity and strong penetrating power, are easy to obtain concentrated sound energy, and can be used for ranging, speed measuring, cleaning, welding, crushing, sterilization, disinfection and the like.
In the prior art, an ultrasonic wave transmitting circuit based on ultrasonic waves is usually pushed by a high-power triode and an ultrasonic wave generating circuit, a driving signal is directly connected with a high-voltage side, a driving module is easy to be impacted by instantaneous high voltage, the circuit is damaged, and the safety is not high. Therefore, how to improve the safety of ultrasonic driving is a technical problem to be solved.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides an ultrasonic driving circuit, a driving module, a circuit board and electronic equipment, which can improve the safety of ultrasonic driving, and make the whole circuit more stable and have high reliability.
An ultrasonic drive circuit according to an embodiment of a first aspect of the present application includes:
the ultrasonic driving circuit is used for outputting driving signals;
the primary side of the transformer is electrically connected with the ultrasonic driving circuit, and the transformer is used for boosting the driving signal;
the ultrasonic induction loop is electrically connected with the secondary side of the transformer and is used for generating ultrasonic waves through the boosted driving signal;
the power supply closed loop is provided with a relay, a normally open contact of the relay is arranged on the ultrasonic induction loop, and the power supply closed loop is used for switching on or switching off the ultrasonic induction loop through the normally open contact of the relay;
the control module is respectively and electrically connected with the ultrasonic driving loop and the power supply closed loop, and is used for outputting PWM signals to the ultrasonic driving loop so that the ultrasonic driving loop outputs the driving signals, and is also used for outputting level signals so that the switch of the relay is turned on or off.
The ultrasonic driving circuit according to the embodiment of the application has at least the following beneficial effects: through setting up ultrasonic drive return circuit, the transformer, ultrasonic wave induction return circuit, power closed circuit, control module, and ultrasonic drive return circuit keeps apart through transformer and ultrasonic wave induction return circuit, power closed circuit keeps apart through relay and ultrasonic wave induction return circuit, when control module sends PWM signal and level signal, can keep apart PWM signal through the transformer, keep apart level signal through the relay, avoided the direct control to ultrasonic wave induction return circuit high pressure side, can effectively improve control module's security, and then promoted whole ultrasonic drive circuit's security and stability, make the transmission reliability of signal higher. The ultrasonic driving circuit can improve ultrasonic driving safety, and enables the whole circuit to be more stable and high in reliability.
According to some embodiments of the first aspect of the present application, the ultrasonic driving circuit includes a first MOS tube, a second MOS tube, a first diode, and a second diode, a gate of the first MOS tube is electrically connected to a first PWM output pin of the control module, a source of the first MOS tube is grounded, a drain of the first MOS tube is electrically connected to an input end of the first diode and one end of a primary transformer respectively, an output end of the first diode, a center tap of the primary transformer, an output end of the secondary diode and a first power supply are electrically connected, an input end of the secondary diode is electrically connected to another end of the primary transformer and a drain of the secondary MOS tube respectively, a gate of the secondary MOS tube is electrically connected to a second PWM output pin of the control module, and a source of the secondary MOS tube is grounded.
According to some embodiments of the first aspect of the present application, the ultrasonic induction loop includes a resistor, a capacitor, and an ultrasonic transducer, one end of the resistor is electrically connected with one end of the secondary transformer, the other end of the resistor is electrically connected with one end of the capacitor, the other end of the capacitor is electrically connected with one end of the ultrasonic transducer, the other end of the ultrasonic transducer is electrically connected with one end of a normally open contact of the relay, and the other end of the normally open contact of the relay is electrically connected with one end of the secondary transformer.
According to some embodiments of the first aspect of the present application, the power supply closed loop includes the relay, a third diode and a triode, one end of an adsorption body of the relay, an output end of the third diode are electrically connected with the second power supply, an input end of the third diode, another end of the adsorption body of the relay are electrically connected with a collector of the triode, an emitter of the triode is grounded, and a base of the triode is electrically connected with a level output pin of the control module.
According to some embodiments of the first aspect of the present application, the control module is a single-chip microcomputer, and the single-chip microcomputer is provided with a first PWM output pin, a second PWM output pin and a level output pin.
According to some embodiments of the first aspect of the present application, the single chip microcomputer is STM32.
According to an ultrasonic drive module of a second aspect of the application, the ultrasonic drive module comprises an ultrasonic drive circuit according to an embodiment of the first aspect.
According to a third aspect of the application, the circuit board comprises an ultrasonic driving circuit according to an embodiment of the first aspect.
According to a fourth aspect of the application, the electronic device comprises a circuit board according to an embodiment of the third aspect.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The application is further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic circuit diagram of an ultrasonic drive circuit according to an embodiment of the present disclosure;
fig. 2 is a schematic block diagram of a control module according to an embodiment of the present application.
Reference numerals:
an ultrasonic drive circuit 100;
a transformer 200;
an ultrasonic induction loop 300;
a power supply closed loop 400;
a control module 500.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
It should be noted that although functional block diagrams are depicted as block diagrams, and logical sequences are shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the block diagrams in the system. The terms and the like in the description and in the claims, and in the above-described drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
In the description of the present application, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical solution.
In the description of the present application, a description with reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Next, an ultrasonic drive circuit according to an embodiment of the present application is described with reference to fig. 1 to 2.
As can be appreciated, as shown in fig. 1 and 2, there is provided an ultrasonic driving circuit comprising:
an ultrasonic driving circuit 100, wherein the ultrasonic driving circuit 100 is used for outputting a driving signal;
the transformer 200, the primary of the transformer 200 is electrically connected with the ultrasonic driving circuit 100, and the transformer 200 is used for boosting the driving signal;
the ultrasonic wave induction loop 300 is electrically connected with the secondary side of the transformer 200, and the ultrasonic wave induction loop 300 is used for generating ultrasonic waves through the boosted driving signals;
the power supply closed loop 400, the power supply closed loop 400 is provided with a relay, a normally open contact of the relay is arranged on the ultrasonic wave induction loop 300, and the power supply closed loop 400 is used for switching on or switching off the ultrasonic wave induction loop 300 through the normally open contact of the relay;
the control module 500 is electrically connected with the ultrasonic driving circuit 100 and the power supply closed circuit 400 respectively, the control module 500 is used for outputting PWM signals to the ultrasonic driving circuit 100 so as to enable the ultrasonic driving circuit 100 to output driving signals, and the control module 500 is also used for outputting level signals so as to enable the switch of the relay to be turned on or off.
Through setting up ultrasonic drive return circuit 100, transformer 200, ultrasonic wave induction return circuit 300, power closed circuit 400, control module 500, and ultrasonic drive return circuit 100 keeps apart through transformer 200 and ultrasonic wave induction return circuit 300, power closed circuit 400 keeps apart through relay and ultrasonic wave induction return circuit 300, when control module 500 sends PWM signal and level signal, can keep apart the PWM signal through transformer 200, keep apart the level signal through the relay, avoided the direct control to ultrasonic wave induction return circuit 300 high-pressure side, can effectively improve control module 500's security, and then promoted whole ultrasonic drive circuit's security and stability, make the transmission reliability of signal higher. The ultrasonic driving circuit can improve ultrasonic driving safety, and enables the whole circuit to be more stable and high in reliability.
It may be understood that, as shown in fig. 1, the ultrasonic driving circuit 100 includes a first MOS transistor, a second MOS transistor, a first diode, and a second diode, where a gate of the first MOS transistor is electrically connected to a first PWM output pin of the control module 500, a source of the first MOS transistor is grounded, a drain of the first MOS transistor is electrically connected to an input end of the first diode and one end of a primary of the transformer 200, respectively, an output end of the first diode, a center tap of the primary of the transformer 200, an output end of the second diode is electrically connected to a first power supply, an input end of the second diode is electrically connected to another end of the primary of the transformer 200 and a drain of the second MOS transistor, respectively, a gate of the second MOS transistor is electrically connected to a second PWM output pin of the control module 500, and a source of the second MOS transistor is grounded.
It should be noted that, as shown in fig. 1, the first MOS transistor, the second MOS transistor, the first diode, and the second diode are Q3, Q2, D1, and D2, respectively, in order; the transformer 200 is T1; the first power supply is 24V.
The transformer 200 may be a PQ2011 type transformer 200.
It will be appreciated that, as shown in fig. 1, the ultrasonic induction loop 300 includes a resistor, a capacitor, and an ultrasonic transducer, wherein one end of the resistor is electrically connected to one end of the secondary of the transformer 200, the other end of the resistor is electrically connected to one end of the capacitor, the other end of the capacitor is electrically connected to one end of the ultrasonic transducer, the other end of the ultrasonic transducer is electrically connected to one end of a normally open contact of the relay, and the other end of the normally open contact of the relay is electrically connected to one end of the secondary of the transformer 200.
As shown in fig. 1, the resistor, the capacitor, and the ultrasonic transducer are R1, C1, and TR1, respectively, in this order.
It will be appreciated that, as shown in fig. 1, the power closed loop 400 includes a relay, a third diode and a triode, wherein one end of an adsorption body of the relay and an output end of the third diode are electrically connected with the second power supply, an input end of the third diode and the other end of the adsorption body of the relay are electrically connected with a collector electrode of the triode, an emitter electrode of the triode is grounded, and a base electrode of the triode is electrically connected with a level output pin of the control module 500.
As shown in fig. 1, the relay, the third diode, and the triode are K1, D3, and Q1, respectively, in this order.
It will be appreciated that, as shown in fig. 2, the control module 500 is a single-chip microcomputer, and the single-chip microcomputer is provided with a first PWM output pin, a second PWM output pin and a level output pin.
As shown in fig. 2, the first PWM output pin, the second PWM output pin, and the level output pin are PWM1, PWM2, and PA0, respectively.
It is understood that the singlechip is STM32.
It should be noted that, the base electrode of the triode Q1 is connected with the GPIO of the singlechip, that is, the PA0 pin, for controlling the closed loop 400 of the power supply to be closed and opened, and a 5V power supply is also needed in the loop; the base electrodes of the Q2 and the Q3 are connected with the first PWM pin and the second PWM output pin of the singlechip, the 2 switching tubes of the Q2 and the Q3 are cross-connected at the same frequency to form a push-pull circuit, the transformer 200 is the PQ2011 type transformer 200, the magnetic core of the transformer 200 has the characteristics of high utilization rate and small conduction loss, the transformer 200 generates 25 times of boosting voltage, the external voltage source is 24V direct current, and the voltage after boosting is about 600V, so that the driving voltage requirement of the ultrasonic transducer is met.
It will be appreciated that there is also provided an ultrasonic drive module per se comprising an ultrasonic drive circuit as in the above embodiments.
It will be appreciated that a circuit board is also provided per se, which includes the ultrasonic drive circuit of the above embodiments.
It will be appreciated that there is also provided an electronic device itself comprising a circuit board as in the above embodiments.
The embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application. Furthermore, embodiments of the present application and features of the embodiments may be combined with each other without conflict.
Claims (9)
1. An ultrasonic drive circuit, comprising:
the ultrasonic driving circuit is used for outputting driving signals;
the primary side of the transformer is electrically connected with the ultrasonic driving circuit, and the transformer is used for boosting the driving signal;
the ultrasonic induction loop is electrically connected with the secondary side of the transformer and is used for generating ultrasonic waves through the boosted driving signal;
the power supply closed loop is provided with a relay, a normally open contact of the relay is arranged on the ultrasonic induction loop, and the power supply closed loop is used for switching on or switching off the ultrasonic induction loop through the normally open contact of the relay;
the control module is respectively and electrically connected with the ultrasonic driving loop and the power supply closed loop, and is used for outputting PWM signals to the ultrasonic driving loop so that the ultrasonic driving loop outputs the driving signals, and is also used for outputting level signals so that the switch of the relay is turned on or off.
2. The ultrasonic driving circuit according to claim 1, wherein the ultrasonic driving circuit comprises a first MOS transistor, a second MOS transistor, a first diode and a second diode, wherein a gate of the first MOS transistor is electrically connected to a first PWM output pin of the control module, a source of the first MOS transistor is grounded, a drain of the first MOS transistor is electrically connected to an input end of the first diode and one end of a primary transformer, an output end of the first diode, a center tap of the primary transformer, an output end of the second diode and a first power supply are electrically connected, an input end of the second diode is electrically connected to another end of the primary transformer and a drain of the second MOS transistor, and a gate of the second MOS transistor is electrically connected to a second PWM output pin of the control module and a source of the second MOS transistor is grounded.
3. The ultrasonic drive circuit of claim 2, wherein the ultrasonic induction loop comprises a resistor, a capacitor, and an ultrasonic transducer, wherein one end of the resistor is electrically connected to one end of the transformer secondary, the other end of the resistor is electrically connected to one end of the capacitor, the other end of the capacitor is electrically connected to one end of the ultrasonic transducer, the other end of the ultrasonic transducer is electrically connected to one end of a normally open contact of the relay, and the other end of the normally open contact of the relay is electrically connected to one end of the transformer secondary.
4. The ultrasonic driving circuit according to claim 2, wherein the power supply closed loop comprises the relay, a third diode and a triode, wherein one end of an adsorption body of the relay and an output end of the third diode are electrically connected with the second power supply, an input end of the third diode and the other end of the adsorption body of the relay are electrically connected with a collector electrode of the triode, an emitter electrode of the triode is grounded, and a base electrode of the triode is electrically connected with a level output pin of the control module.
5. The ultrasonic drive circuit of claim 4, wherein the control module is a single-chip microcomputer, and the single-chip microcomputer is provided with a first PWM output pin, a second PWM output pin and a level output pin.
6. The ultrasonic drive circuit of claim 5, wherein the single-chip microcomputer is STM32.
7. An ultrasonic drive module, characterized in that the ultrasonic drive module comprises the ultrasonic drive circuit according to any one of claims 1 to 6.
8. A circuit board comprising the ultrasonic drive circuit according to any one of claims 1 to 6.
9. An electronic device comprising the circuit board of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322213321.7U CN220678471U (en) | 2023-08-16 | 2023-08-16 | Ultrasonic driving circuit, driving module, circuit board and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322213321.7U CN220678471U (en) | 2023-08-16 | 2023-08-16 | Ultrasonic driving circuit, driving module, circuit board and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN220678471U true CN220678471U (en) | 2024-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322213321.7U Active CN220678471U (en) | 2023-08-16 | 2023-08-16 | Ultrasonic driving circuit, driving module, circuit board and electronic equipment |
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| Country | Link |
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| CN (1) | CN220678471U (en) |
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- 2023-08-16 CN CN202322213321.7U patent/CN220678471U/en active Active
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