CN210429289U - Buzzer driving circuit - Google Patents
Buzzer driving circuit Download PDFInfo
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- CN210429289U CN210429289U CN201920286007.2U CN201920286007U CN210429289U CN 210429289 U CN210429289 U CN 210429289U CN 201920286007 U CN201920286007 U CN 201920286007U CN 210429289 U CN210429289 U CN 210429289U
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Abstract
The utility model discloses a buzzer drive circuit, including voltage input port, single chip microcomputer chip, first resistance, second resistance, third resistance, fourth resistance, fifth resistance, sixth resistance, seventh resistance, first electric capacity, first NPN triode, second NPN triode, first PNP triode, bluetooth chip and buzzer, the single chip microcomputer chip can send high level signal and impel first NPN triode and first PNP triode to switch on, makes the buzzer both sides appear the pressure differential to the sound production duration of control buzzer; in addition, the singlechip chip also outputs a PWM signal through a signal adjusting port, and the tone of the buzzer is adjusted by controlling the frequency of the PWM signal; in addition, the single chip receives a wireless signal through the Bluetooth chip to respond to the output signal. Therefore, the utility model discloses it is long not only can control the sound production of bee calling organ, but also can adjust the sound production tone of bee calling organ, has satisfied customer's use needs greatly.
Description
Technical Field
The utility model relates to a singlechip circuit field, in particular to buzzer drive circuit.
Background
At present, a buzzer is an electronic buzzer with an integrated structure, adopts direct-current voltage for power supply, and is widely applied to electronic products such as computers, printers, copiers, alarms, electronic toys, automobile electronic equipment, telephones, timers and the like as a sounding device. The buzzer is mainly divided into two types, namely a piezoelectric buzzer and an electromagnetic buzzer. For the buzzer circuits on the market, the sounding time cannot be controlled, the sounding is often single, the tone of the buzzer cannot be adjusted, and the requirements of customers cannot be met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a buzzer drive circuit, it is long not only can control the sound production of buzzer, but also can adjust the sound production tone of buzzer, has satisfied customer's use needs greatly.
The utility model provides a buzzer drive circuit, including voltage input port, single chip microcomputer chip, first resistance, second resistance, third resistance, fourth resistance, fifth resistance, sixth resistance, seventh resistance, first electric capacity, first NPN triode, second NPN triode, first PNP triode, bluetooth chip and buzzer, be provided with first data transmission port, signal control port and signal regulation port on the single chip microcomputer chip, be provided with second data transmission port on the bluetooth chip, one end of first resistance is connected to signal control port, and the other end is connected to the base of first NPN triode, the collecting electrode of first NPN triode passes through the second resistance is connected to the base of first PNP triode, the projecting pole of first NPN triode is connected to ground, one end of third resistance is connected to the base of first PNP triode, the other end of the first PNP triode is connected to the voltage input port, an emitting electrode of the first PNP triode is connected to the voltage input port, a collector electrode of the first PNP triode is connected to the ground sequentially through the fourth resistor and the first capacitor, one end of the fifth resistor is connected to the collector electrode of the first PNP triode, the other end of the fifth resistor is connected to the collector electrode of the second NPN triode, a base electrode of the second NPN triode is connected to the signal adjusting port through the sixth resistor, the emitting electrode of the second NPN triode is connected to the ground through the seventh resistor, the buzzer is connected to two ends of the fifth resistor in parallel, a second data transmission port of the Bluetooth chip is connected to a first data transmission port of the single chip, and the single chip and the Bluetooth chip are also connected.
Has the advantages that: the single chip microcomputer chip can send high level signals through the signal control port, so that the first NPN triode and the first PNP triode are enabled to be conducted, the two sides of the buzzer are subjected to pressure difference to make sound, and the sounding duration of the buzzer can be controlled; in addition, the singlechip chip can also output PWM signals through a signal adjusting port, and the tone of the buzzer is adjusted by controlling the frequency of the PWM signals; in addition, the singlechip chip can also receive wireless signals through the Bluetooth chip so as to respond to and output signals through the signal control port or the signal adjusting port. Therefore, the utility model discloses it is long not only can control the sound production of bee calling organ, but also can adjust the sound production tone of bee calling organ, has satisfied customer's use needs greatly.
According to a buzzer drive circuit, the resistance value of first resistance is 2.4k omega, the resistance value of second resistance is 2.4k omega, the resistance value of third resistance is 10k omega, the resistance value of fourth resistance is 1k omega, the resistance value of fifth resistance is 1k omega, the resistance value of sixth resistance is 2.4k omega, the resistance value of seventh resistance is 1k omega, the capacitance value of first electric capacity is 47 muF.
According to a buzzer drive circuit, still include eighth resistance and first diode, still be provided with state output port on the bluetooth chip, the positive pole of first diode passes through eighth resistance connection is to bluetooth chip's state output port, and the other end is connected to ground. The utility model discloses in bluetooth chip can pass through state output port output voltage at the during operation to make first diode light, can indicate that it is in normal operating condition for the user.
According to a buzzer drive circuit, first electric capacity is polarity electric capacity, the positive pole of first electric capacity is connected to fourth resistance, the negative pole is connected to ground.
According to a buzzer drive circuit, the model of first NPN triode and second NPN triode is SC1623, the model of first PNP triode is LMBT2907ALT 1G.
According to the utility model discloses a buzzer drive circuit, bluetooth chip's model is JYD-10.
Drawings
The invention is further described with reference to the following figures and examples.
Fig. 1 is a circuit diagram of a buzzer driving circuit according to an embodiment of the present invention.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood 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 invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1, a buzzer driving circuit according to an embodiment of the present invention includes a voltage input port VCC, a single chip microcomputer U1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first capacitor C1, a first NPN transistor Q1, a second NPN transistor Q3, a first PNP transistor Q2, a bluetooth chip U2, and a buzzer B1, wherein the single chip microcomputer U1 is provided with a first data transmission port, a signal control port, and a signal conditioning port, the bluetooth chip U2 is provided with a second data transmission port, one end of the first resistor R1 is connected to the signal control port, the other end of the first NPN transistor R1 is connected to a base of the first NPN transistor Q1, a collector of the first NPN transistor Q1 is connected to a base of the first NPN transistor Q2 through the second resistor R6865, and a collector of the first NPN transistor Q1 is connected to an emitter of the NPN transistor 573 57345, one end of the third resistor R3 is connected to the base of the first PNP triode Q2, the other end is connected to the voltage input port VCC, the emitter of the first PNP transistor Q2 is connected to the voltage input port VCC, the collector is connected to ground through the fourth resistor R4 and the first capacitor C1 in turn, one end of the fifth resistor R5 is connected to the collector of the first PNP transistor Q2, the other end is connected to the collector of the second NPN transistor Q3, the base of the second NPN transistor Q3 is connected to the signal conditioning port through the sixth resistor R6, the emitter of the second NPN transistor Q3 is connected to ground through the seventh resistor R7, the buzzer B1 is connected in parallel at two ends of the fifth resistor R5, the second data transmission port of the Bluetooth chip U2 is connected to the first data transmission port of the singlechip chip U1, the single chip microcomputer chip U1 and the Bluetooth chip U2 are also connected to the voltage input port VCC at the same time.
In the utility model, the single chip microcomputer chip U1 can send high level signals through the signal control port, so as to make the first NPN triode Q1 and the first PNP triode Q2 conducted, and make the sound generated by the pressure difference between the two sides of the buzzer B1, thereby controlling the sounding time of the buzzer B1; in addition, the singlechip chip U1 can also output PWM signals through a signal adjusting port, and the tone of the buzzer B1 is adjusted by controlling the frequency of the PWM signals; in addition, the singlechip chip U1 can also receive wireless signals through the Bluetooth chip U2 so as to respond to output signals through a signal control port or a signal adjusting port. Therefore, the utility model discloses not only can control when buzzer B1's the sound production, but also can adjust buzzer B1's vocal tone, satisfied customer's operation needs greatly.
Further, based on the above embodiment, the present invention provides another embodiment, which provides a buzzer driving circuit, wherein the resistance value of the first resistor R1 is 2.4k Ω, the resistance value of the second resistor R2 is 2.4k Ω, the resistance value of the third resistor R3 is 10k Ω, the resistance value of the fourth resistor R4 is 1k Ω, the resistance value of the fifth resistor R5 is 1k Ω, the resistance value of the sixth resistor R6 is 2.4k Ω, the resistance value of the seventh resistor R7 is 1k Ω, and the capacitance value of the first capacitor C1 is 47 μ F.
Further, based on the above embodiment, the utility model discloses a further embodiment provides a buzzer drive circuit, still includes eighth resistance R8 and first diode D1, still be provided with the state output port on the bluetooth chip U2, the positive pole of first diode D1 is passed through eighth resistance R8 is connected to the state output port of bluetooth chip U2, and the other end is connected to ground. The utility model discloses in bluetooth chip U2 can pass through state output port output voltage during the working period to make first diode D1 light, can indicate that it is in normal operating condition for the user.
Further, based on the above embodiment, another embodiment of the present invention provides a buzzer driving circuit, wherein the first capacitor C1 is a polar capacitor, the positive electrode of the first capacitor C1 is connected to the fourth resistor R4, and the negative electrode is connected to ground.
Further, based on the above embodiment, the utility model provides a buzzer drive circuit, the model of first NPN triode Q1 and second NPN triode Q3 is SC1623, the model of first PNP triode Q2 is LMBT2907ALT 1G.
Further, based on the above embodiment, the utility model discloses another embodiment provides a buzzer drive circuit, bluetooth chip U2's model is JYD-10.
Further, based on the above embodiments, another embodiment of the present invention provides a buzzer driving circuit, including a voltage input port VCC, a single chip microcomputer U1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first capacitor C1, a first NPN transistor Q1, a second NPN transistor Q3, a first PNP transistor Q2, a bluetooth chip U2, and a buzzer B1, wherein the single chip microcomputer U1 is provided with a first data transmission port, a signal control port, and a signal adjustment port, the bluetooth chip U2 is provided with a second data transmission port, one end of the first resistor R1 is connected to the signal control port, the other end of the first NPN transistor Q1 is connected to a base of the first NPN transistor Q2 through the second resistor R2, an emitter of the first NPN triode Q1 is connected to ground, one end of the third resistor R3 is connected to the base of the first PNP triode Q2, the other end of the third resistor R3 is connected to the voltage input port VCC, an emitter of the first PNP triode Q2 is connected to the voltage input port VCC, a collector of the first PNP triode Q2 is connected to ground sequentially through the fourth resistor R4 and the first capacitor C1, one end of the fifth resistor R5 is connected to a collector of the first PNP triode Q2, the other end of the fifth resistor R3 is connected to a collector of the second NPN triode Q3, a base of the second NPN triode Q3 is connected to the signal adjusting port through the sixth resistor R6, an emitter of the second NPN triode Q3 is connected to ground through the seventh resistor R7, the buzzer B1 is connected in parallel to both ends of the fifth resistor R5, and the second data transmission port of the bluetooth chip U2 is connected to the first data transmission port of the single chip U, the single chip microcomputer chip U1 and the Bluetooth chip U2 are also connected to the voltage input port VCC at the same time; secondly, the resistance value of the first resistor R1 is 2.4k Ω, the resistance value of the second resistor R2 is 2.4k Ω, the resistance value of the third resistor R3 is 10k Ω, the resistance value of the fourth resistor R4 is 1k Ω, the resistance value of the fifth resistor R5 is 1k Ω, the resistance value of the sixth resistor R6 is 2.4k Ω, the resistance value of the seventh resistor R7 is 1k Ω, and the capacitance value of the first capacitor C1 is 47 μ F; secondly, the Bluetooth module further comprises an eighth resistor R8 and a first diode D1, a state output port is further arranged on the Bluetooth chip U2, the anode of the first diode D1 is connected to the state output port of the Bluetooth chip U2 through the eighth resistor R8, and the other end of the first diode D1 is connected to the ground; secondly, the first capacitor C1 is a polar capacitor, the anode of the first capacitor C1 is connected to the fourth resistor R4, and the cathode is connected to ground; secondly, the models of the first NPN triode Q1 and the second NPN triode Q3 are SC1623, the model of the first PNP triode Q2 is LMBT2907ALT1G, and the model of the Bluetooth chip U2 is JYD-10.
In the utility model, the single chip microcomputer chip U1 can send high level signals through the signal control port, so as to make the first NPN triode Q1 and the first PNP triode Q2 conducted, and make the sound generated by the pressure difference between the two sides of the buzzer B1, thereby controlling the sounding time of the buzzer B1; in addition, the singlechip chip U1 can also output PWM signals through a signal adjusting port, and the tone of the buzzer B1 is adjusted by controlling the frequency of the PWM signals; in addition, the singlechip chip U1 can also receive wireless signals through the Bluetooth chip U2 so as to respond to output signals through a signal control port or a signal adjusting port. Therefore, the utility model discloses not only can control when buzzer B1's the sound production, but also can adjust buzzer B1's vocal tone, satisfied customer's operation needs greatly.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (6)
1. A buzzer drive circuit is characterized in that: the single chip is provided with a first data transmission port, a signal control port and a signal regulation port, the Bluetooth chip is provided with a second data transmission port, one end of the first resistor is connected to the signal control port, the other end of the first resistor is connected to the base electrode of the first NPN triode, the collector electrode of the first NPN triode is connected to the base electrode of the first PNP triode through the second resistor, the emitter electrode of the first NPN triode is connected to the ground, one end of the third resistor is connected to the base electrode of the first PNP triode, and the other end of the third resistor is connected to the voltage input port, an emitting electrode of the first PNP triode is connected to a voltage input port, a collecting electrode of the first PNP triode is connected to the ground sequentially through the fourth resistor and the first capacitor, one end of the fifth resistor is connected to the collecting electrode of the first PNP triode, the other end of the fifth resistor is connected to a collecting electrode of the second NPN triode, a base electrode of the second NPN triode is connected to a signal adjusting port through the sixth resistor, the emitting electrode of the second NPN triode is connected to the ground through the seventh resistor, the buzzer is connected to two ends of the fifth resistor in parallel, a second data transmission port of the Bluetooth chip is connected to a first data transmission port of the single chip, and the single chip and the Bluetooth chip are connected to the voltage input port simultaneously.
2. A buzzer driving circuit according to claim 1, wherein: the resistance value of the first resistor is 2.4k omega, the resistance value of the second resistor is 2.4k omega, the resistance value of the third resistor is 10k omega, the resistance value of the fourth resistor is 1k omega, the resistance value of the fifth resistor is 1k omega, the resistance value of the sixth resistor is 2.4k omega, the resistance value of the seventh resistor is 1k omega, and the capacitance value of the first capacitor is 47 muF.
3. A buzzer driving circuit according to claim 1, wherein: still include eighth resistance and first diode, still be provided with the state output port on the bluetooth chip, the positive pole of first diode passes through eighth resistance is connected to the state output port of bluetooth chip, and the other end is connected to ground.
4. A buzzer driving circuit according to claim 1, wherein: the first capacitor is a polar capacitor, the anode of the first capacitor is connected to the fourth resistor, and the cathode of the first capacitor is connected to the ground.
5. A buzzer driving circuit according to claim 1, wherein: the first NPN triode and the second NPN triode are both in the model number of S623, and the first PNP triode is in the model number of LMBT2907ALT 1G.
6. A buzzer driving circuit according to claim 1, wherein: the model of the Bluetooth chip is JYD-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920286007.2U CN210429289U (en) | 2019-03-06 | 2019-03-06 | Buzzer driving circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920286007.2U CN210429289U (en) | 2019-03-06 | 2019-03-06 | Buzzer driving circuit |
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| CN210429289U true CN210429289U (en) | 2020-04-28 |
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| CN201920286007.2U Active CN210429289U (en) | 2019-03-06 | 2019-03-06 | Buzzer driving circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111784877A (en) * | 2020-06-29 | 2020-10-16 | 深圳市亿联智能有限公司 | Based on fingerprint lock single button control warning tone circuit |
| CN112289291A (en) * | 2020-10-10 | 2021-01-29 | 华帝股份有限公司 | Buzzer device and control method thereof |
| CN112365869A (en) * | 2020-10-09 | 2021-02-12 | 华帝股份有限公司 | Single IO controlled buzzer circuit and control method thereof |
-
2019
- 2019-03-06 CN CN201920286007.2U patent/CN210429289U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111784877A (en) * | 2020-06-29 | 2020-10-16 | 深圳市亿联智能有限公司 | Based on fingerprint lock single button control warning tone circuit |
| CN112365869A (en) * | 2020-10-09 | 2021-02-12 | 华帝股份有限公司 | Single IO controlled buzzer circuit and control method thereof |
| CN112289291A (en) * | 2020-10-10 | 2021-01-29 | 华帝股份有限公司 | Buzzer device and control method thereof |
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