CN211788142U - High-decibel volume buzzing reminding device and circuit for warning - Google Patents
High-decibel volume buzzing reminding device and circuit for warning Download PDFInfo
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- CN211788142U CN211788142U CN201922430147.5U CN201922430147U CN211788142U CN 211788142 U CN211788142 U CN 211788142U CN 201922430147 U CN201922430147 U CN 201922430147U CN 211788142 U CN211788142 U CN 211788142U
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Abstract
The utility model relates to a high decibel volume buzzing reminding device and circuit are used in warning, high decibel volume buzzing reminding device is used in warning includes warning high decibel volume buzzing reminding circuit and loudspeaker, and warning high decibel volume buzzing reminding circuit includes power supply end, NE556 double-time base module and audio power amplification integrated module. The core of the high decibel volume buzzing reminding device for warning provided by the utility model is the NE556 double-time-base module and the audio power amplification integrated module, which can realize the advantages of strong directivity, large power, high efficiency and long propagation distance, and moreover, the circuit structure is greatly simplified, and is simpler and not complex; the NE556 double-time-base module can output corresponding audio signals, and the audio signals are amplified and then output through the audio power amplification integration module, so that the sound is greatly enhanced, and the NE556 double-time-base module has the characteristics of good sound quality, good frequency response, long transmission distance and the like.
Description
Technical Field
The utility model relates to a warning is with high decibel volume buzzing reminding device and circuit.
Background
Because the alarm needs high decibel volume, if use horn type tweeter, though it has the advantages of strong directivity, large power, high efficiency, long propagation distance, but the volume is bigger, can not be suitable for the occasion with smaller space, moreover, the circuit structure is more complicated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a warning is with high decibel volume buzzing reminding device and circuit for solve the more complicated problem of circuit structure of current alarm.
In order to solve the problem, the utility model adopts the following technical scheme:
a high-decibel volume buzzing reminding device for warning comprises a high-decibel volume buzzing reminding circuit for warning and a loudspeaker, wherein the high-decibel volume buzzing reminding circuit for warning comprises a power supply end, an NE556 double-time-base module and an audio power amplification integrated module;
the NE556 double-time-base module comprises a first discharging end, a second discharging end, a first threshold voltage end, a second threshold voltage end, a first output end, a first trigger input end, a second trigger input end and a positive power supply end; the audio power amplification integrated module comprises a non-inverting input end, an output end and a positive power supply end;
the positive power supply end of the NE556 double-time-base module is connected with the power supply end, the power supply end is grounded through a first series branch, a first resistor, a second resistor and a first capacitor are sequentially arranged on the first series branch in series, a connection point of the first resistor and the second resistor is connected with the first discharge end, and a connection point of the second resistor and the first capacitor is connected with the first threshold voltage end and the first trigger input end;
the power supply end is grounded through a second series branch, a third resistor, a fourth resistor and a second capacitor are sequentially arranged on the second series branch in series, the connection point of the third resistor and the fourth resistor is connected with the second discharge end, and the connection point of the fourth resistor and the second capacitor is connected with the second threshold voltage end and the second trigger input end;
the first output end is grounded through a third series branch, a fifth resistor and a sixth resistor are sequentially connected in series on the third series branch, the connection point of the fifth resistor and the sixth resistor is connected with the non-inverting input end through a third capacitor, the inverting input end is grounded through a fourth series branch, a fourth capacitor and a seventh resistor are sequentially connected in series on the fourth series branch, and the connection point of the fourth capacitor and the seventh resistor is connected with the output end of the audio power amplification integrated module through an eighth resistor; the positive power supply end of the audio power amplification integrated module is connected with the power supply end;
the output end of the audio power amplification integrated module is connected with the signal input end of the loudspeaker through a fifth capacitor, the connecting point of the fifth capacitor and the signal input end of the loudspeaker is grounded through a fifth series branch, and a sixth capacitor and a ninth resistor are sequentially connected in series on the fifth series branch.
Optionally, the NE556 dual time-base module includes a first control voltage terminal, a second control voltage terminal, a first main reset terminal, a second output terminal, and a ground terminal; the audio power amplification integrated module comprises a grounding end;
the first control voltage end is grounded through a seventh capacitor, and the second control voltage end is connected with the first control voltage end; the first main reset end is connected with a second output end, and the second main reset end is connected with the power supply end;
the ground terminal of the NE556 dual time-base module and the ground terminal of the audio power amplification integrated module are grounded.
Optionally, the power supply end is grounded through a filtering module, and the filtering module is composed of an eighth capacitor and a ninth capacitor which are arranged in parallel.
Optionally, the audio power amplification integrated module is an audio power amplification integrated chip with model number TDA 2002.
A buzzing reminding circuit with high decibel volume for warning comprises a power supply end, an NE556 double-time-base module and an audio power amplification integrated module;
the NE556 double-time-base module comprises a first discharging end, a second discharging end, a first threshold voltage end, a second threshold voltage end, a first output end, a first trigger input end, a second trigger input end and a positive power supply end; the audio power amplification integrated module comprises a non-inverting input end, an output end and a positive power supply end;
the positive power supply end of the NE556 double-time-base module is connected with the power supply end, the power supply end is grounded through a first series branch, a first resistor, a second resistor and a first capacitor are sequentially arranged on the first series branch in series, a connection point of the first resistor and the second resistor is connected with the first discharge end, and a connection point of the second resistor and the first capacitor is connected with the first threshold voltage end and the first trigger input end;
the power supply end is grounded through a second series branch, a third resistor, a fourth resistor and a second capacitor are sequentially arranged on the second series branch in series, the connection point of the third resistor and the fourth resistor is connected with the second discharge end, and the connection point of the fourth resistor and the second capacitor is connected with the second threshold voltage end and the second trigger input end;
the first output end is grounded through a third series branch, a fifth resistor and a sixth resistor are sequentially connected in series on the third series branch, the connection point of the fifth resistor and the sixth resistor is connected with the non-inverting input end through a third capacitor, the inverting input end is grounded through a fourth series branch, a fourth capacitor and a seventh resistor are sequentially connected in series on the fourth series branch, and the connection point of the fourth capacitor and the seventh resistor is connected with the output end of the audio power amplification integrated module through an eighth resistor; the positive power supply end of the audio power amplification integrated module is connected with the power supply end;
the output end of the audio power amplification integrated module is used for being connected with the signal input end of the loudspeaker through a fifth capacitor, the connecting point of the fifth capacitor and the signal input end of the loudspeaker is grounded through a fifth series branch, and a sixth capacitor and a ninth resistor are sequentially connected in series on the fifth series branch.
Optionally, the NE556 dual time-base module includes a first control voltage terminal, a second control voltage terminal, a first main reset terminal, a second output terminal, and a ground terminal; the audio power amplification integrated module comprises a grounding end;
the first control voltage end is grounded through a seventh capacitor, and the second control voltage end is connected with the first control voltage end; the first main reset end is connected with a second output end, and the second main reset end is connected with the power supply end;
the ground terminal of the NE556 dual time-base module and the ground terminal of the audio power amplification integrated module are grounded.
Optionally, the power supply end is grounded through a filtering module, and the filtering module is composed of an eighth capacitor and a ninth capacitor which are arranged in parallel.
Optionally, the audio power amplification integrated module is an audio power amplification integrated chip with model number TDA 2002.
The utility model has the advantages that: the core of the high decibel volume buzzing reminding device for warning provided by the utility model is the NE556 double-time-base module and the audio power amplification integrated module, and the output of high decibel sound signals is realized through the two modules, compared with the circuit structure of the existing alarm, the circuit structure is greatly simplified while the advantages of strong directivity, large power, high efficiency and long propagation distance can be realized, and the circuit structure is simpler and is not complicated; the NE556 double-time-base module can output corresponding audio signals, and the audio signals are amplified and then output through the audio power amplification integration module, so that the sound is greatly enhanced, and the NE556 double-time-base module has the characteristics of good sound quality, good frequency response, long transmission distance and the like.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described as follows:
fig. 1 is a circuit structure diagram of the high decibel volume buzzing reminder device for warning of the present invention;
FIG. 2 is a structural view of a horn of the present invention;
figure 3 is a schematic of the housing of the horn.
Detailed Description
In order to make the technical purpose, technical solutions and advantageous effects of the present invention clearer, the technical solutions of the present invention are further described below with reference to fig. 1 to 3 and specific embodiments.
The embodiment of the high decibel volume buzzing reminding device for warning comprises:
the embodiment provides a warning high decibel volume buzzing reminding device, which comprises a warning high decibel volume buzzing reminding circuit and a loudspeaker U4. The high-decibel volume buzzing reminding circuit for warning comprises a power supply end U1, an NE556 double-time-base module U2 and an audio power amplification integrated module U3. The NE556 dual time base module U2 is a conventional NE556 dual time base chip, such as model G7B556 MJ; the audio power amplification integrated module U3 may be a conventional audio power amplification integrated chip, such as a model of TDA2002 or TDA2003, and in this embodiment, the audio power amplification integrated module U3 is a model of TDA2002 audio power amplification integrated chip. The horn U4 may be a conventional loudspeaker or buzzer with a power of 10W.
The NE556 dual-time-base module U2 includes 14 pins, where pin 1 is a first discharge end, pin 13 is a second discharge end, pin 2 is a first threshold voltage end, pin 12 is a second threshold voltage end, pin 3 is a first control voltage end, pin 11 is a second control voltage end, pin 4 is a first main reset end, pin 10 is a second main reset end, pin 5 is a first output end, pin 9 is a second output end, pin 6 is a first trigger input end, pin 8 is a second trigger input end, pin 7 is a ground end, and pin 14 is a positive power supply end. The audio power amplification integrated module U3 includes 5 pins, where pin 1 is a non-inverting input terminal, pin 2 is an inverting input terminal, pin 2 is a ground terminal, pin 3 is an output terminal, pin 4 is a positive power supply terminal, and pin 5 is a positive power supply terminal.
The NE556 dual time base module U2 is a conventional chip and will be briefly described below. The NE556 double-time-base module U2 is a bipolar circuit with two time-base circuits inside, the output driving capability is large, the output current can reach 200MA, and the working frequency range can reach 0.01 Hz-500 kHz. The NE556 dual time base module U2 includes two voltage comparators (a first comparator and a second comparator), three equivalent series resistors, an RS trigger, a discharge tube T, and a power output stage. Which provides two reference voltages 1/3 VCC and 2/3 VCC. The function of the NE556 dual time base module U2 is mainly determined by two comparators, whose output voltages control the states of the RS flip-flops and the discharge tubes. And a voltage is added between the power supply and the ground, and when the 5 pin is suspended, the voltage of the non-inverting input end of the first comparator is 2/3 VCC, and the voltage of the inverting input end of the second comparator is 1/3 VCC. If the voltage at pin 12 is less than 1/3 VCC, the output of the second comparator is 0, which may set the RS flip-flop to 1, and the output OUT = 1. If the voltage of pin 2 is greater than 2/3 VCC while the voltage of pin 6 is greater than 1/3 VCC, the output of the first comparator is 0 and the output of the second comparator is 1, the RS flip-flop can be set to 0, and the output is at 0 level.
As shown in fig. 1, pin 14 of the NE556 dual time-base module U2 is connected to a power supply terminal U1, the power supply terminal U1 is grounded through a first series branch, a first resistor (i.e., resistor R1), a second resistor (i.e., resistor R2), and a first capacitor (i.e., capacitor C5) are sequentially and serially connected to the first series branch, a connection point of the resistor R1 and the resistor R2 is connected to pin 1 of the NE556 dual time-base module U2, and a connection point of the resistor R2 and the capacitor C5 is connected to pin 2 and pin 6 of the NE556 dual time-base module U2.
The power supply end U1 is grounded through the second series branch, a third resistor (namely, a resistor R3), a fourth resistor (namely, a resistor R4) and a second capacitor (namely, a capacitor C7) are sequentially and serially arranged on the second series branch, the connecting point of the resistor R3 and the resistor R4 is connected with the 13 pins of the NE556 double-time-base module U2, and the connecting point of the resistor R4 and the capacitor C7 is connected with the 12 pins and the 8 pins of the NE556 double-time-base module U2.
The 3 pins of the NE556 dual time base module U2 are grounded through a seventh capacitor (i.e. a capacitor C6), the 11 pin of the NE556 dual time base module U2 is connected with the 3 pins of the NE556 dual time base module U2, the 4 pin of the NE556 dual time base module U2 is connected with the 9 pins of the NE556 dual time base module U2, and the 10 pin of the NE556 dual time base module U2 is connected with the power supply terminal U1.
The pin 5 of the NE556 dual time-base module U2 is grounded through a third series branch, a fifth resistor (i.e., a resistor R5) and a sixth resistor (i.e., a resistor R6) are sequentially and serially connected to the third series branch, and a connection point of the resistor R5 and the resistor R6 is connected to the pin 1 of the audio power amplification integrated module U3 through a third capacitor (i.e., a capacitor C8). The 2 pins of the audio power amplification integrated module U3 are grounded through a fourth series branch, a fourth capacitor (namely, a capacitor C9) and a seventh resistor (namely, a resistor R7) are sequentially and serially arranged on the fourth series branch, the connection point of the capacitor C9 and the resistor R7 is connected with the 4 pins of the audio power amplification integrated module U3 through an eighth resistor (namely, a resistor R8), and the 5 pins of the audio power amplification integrated module U3 are connected with a power supply end U1.
The 4 pins of the audio power amplification integrated module U3 are connected to the signal input terminal of the speaker U4 through a fifth capacitor (i.e., a capacitor C10), the connection point of the capacitor C10 and the signal input terminal of the speaker U4 is grounded through a fifth series branch, and a sixth capacitor (i.e., a capacitor C11) and a ninth resistor (i.e., a resistor R9) are sequentially and serially connected to the fifth series branch.
The NE556 dual timebase module U2 has its 7 pins and the audio power amplification integrated module U3's 3 pins grounded.
In order to improve the power supply stability, the power supply terminal U1 is grounded through a filter module, and the filter module is composed of an eighth capacitor (i.e. a capacitor C3) and a ninth capacitor (i.e. a capacitor C4) which are arranged in parallel.
One electrical parameter of each component is given below: the resistance value of the resistor R1 is 1K omega, the resistance value of the resistor R2 is 5.6K omega, the resistance value of the resistor R3 is 1M omega, the resistance value of the resistor R4 is 2.7M omega, the resistance values of the resistor R5 and the resistor R6 are 5.1K omega, the resistance value of the resistor R7 is 2R, the resistance value of the resistor R8 is 220R, the resistance value of the resistor R9 is 56R, the capacitance value of the capacitor C3 is 100uF, the capacitance value of the capacitor C4 is 104, the capacitance value of the capacitor C5 is 104, the capacitance value of the capacitor C6 is 103, the capacitance value of the capacitor C7 is 224, the capacitance value of the capacitor C8 is 100uF, the capacitance value of the capacitor C9 is 100uF, the capacitance value of the capacitor C10 is 470uF, and the capacitance value of the capacitor C11 is 100 uF. Of course, the electrical parameters of the components in fig. 1 are not limited to the above specific values, and are specifically set according to actual conditions.
As shown in fig. 1, the NE556 dual timebase module U2 and the peripheral rc elements form an astable free running multivibrator. The NE556 double time base module U2, a resistor R1, a resistor R2 and a capacitor C5 form an astable multivibrator, the oscillation period T =0.7 (R1 + R2) C5, the oscillation frequency is about 1000Hz, and the frequency of sound can be changed by adjusting the resistor R2. The NE556 double time base module U2, a resistor R3, a resistor R4 and a capacitor C7 form an astable multivibrator, the oscillation period T =0.7 (R3 + R4) C7, the oscillation frequency is about 1Hz, and the interval time of sound can be adjusted by adjusting the resistor R4. The audio power amplification integrated module U3 can output undistorted power of about 3W by coupling the divided voltage of the adjusting resistor R5 and the resistor R6 to the audio power amplification integrated module U3 through the capacitor C8, and various protection circuits are arranged inside the audio power amplification integrated module U3, so that the audio power amplification integrated module has strong adaptability to abnormal conditions such as current surge, overvoltage and load short circuit. The working voltage is 8-18V, and the quiescent current is 4 milliamperes. The capacitor C8 is an input coupling capacitor, and functions to couple audio signals while blocking dc components. After being power amplified by the audio power amplification integration module U3, the audio power amplification integration module outputs the amplified audio power to the loudspeaker U4 through capacitive coupling of the capacitor C10 to make an alarm sound.
Therefore, the circuit shown in fig. 1 adopts an NE556 double-time-base module U2 to form an oscillator with the frequency of 1000Hz, outputs intermittent audio signals with the interval of 1 second, amplifies the signals through an audio power amplification integration module U3 to push a sound film to give an alarm sound, and has the characteristics of good sound quality, good frequency response, long transmission distance and the like.
In addition, fig. 2 is a horn structure view of the horn U4, and fig. 3 is a schematic view of a housing of the horn. The horn is connected with the back of the loudspeaker diaphragm through the buffer cavity at the large opening end to form an inverse horn, and the inner walls of the horn and the buffer cavity are of sound-absorbing surface structures, so that the sound waves in front of and at the back of the diaphragm can be effectively prevented from interfering with each other, the frequency characteristic is improved, and standing wave and sound dyeing are eliminated. Therefore, the structure of the sound film buffer cavity is improved, sound is diffused outwards through the horn when the sound film vibrates, the sound is greatly enhanced, and the sound is intensively transmitted in one direction, so that the sound is further transmitted.
The above-mentioned embodiments are only used for illustrating but not limiting the technical solution of the present invention, and any equivalent replacement and modification or partial replacement which do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.
The embodiment of the warning high-decibel volume buzzing reminding circuit comprises:
this embodiment provides a warning with high decibel volume buzzing warning circuit, and this circuit structure and theory of operation and process have given detailed description in above-mentioned warning with high decibel volume buzzing warning device embodiment, no longer describe.
Claims (8)
1. A high decibel volume buzzing reminding device for warning is characterized by comprising a high decibel volume buzzing reminding circuit for warning and a loudspeaker, wherein the high decibel volume buzzing reminding circuit for warning comprises a power supply end, an NE556 double-time-base module and an audio power amplification integrated module;
the NE556 double-time-base module comprises a first discharging end, a second discharging end, a first threshold voltage end, a second threshold voltage end, a first output end, a first trigger input end, a second trigger input end and a positive power supply end; the audio power amplification integrated module comprises a non-inverting input end, an output end and a positive power supply end;
the positive power supply end of the NE556 double-time-base module is connected with the power supply end, the power supply end is grounded through a first series branch, a first resistor, a second resistor and a first capacitor are sequentially arranged on the first series branch in series, a connection point of the first resistor and the second resistor is connected with the first discharge end, and a connection point of the second resistor and the first capacitor is connected with the first threshold voltage end and the first trigger input end;
the power supply end is grounded through a second series branch, a third resistor, a fourth resistor and a second capacitor are sequentially arranged on the second series branch in series, the connection point of the third resistor and the fourth resistor is connected with the second discharge end, and the connection point of the fourth resistor and the second capacitor is connected with the second threshold voltage end and the second trigger input end;
the first output end is grounded through a third series branch, a fifth resistor and a sixth resistor are sequentially connected in series on the third series branch, the connection point of the fifth resistor and the sixth resistor is connected with the non-inverting input end through a third capacitor, the inverting input end is grounded through a fourth series branch, a fourth capacitor and a seventh resistor are sequentially connected in series on the fourth series branch, and the connection point of the fourth capacitor and the seventh resistor is connected with the output end of the audio power amplification integrated module through an eighth resistor; the positive power supply end of the audio power amplification integrated module is connected with the power supply end;
the output end of the audio power amplification integrated module is connected with the signal input end of the loudspeaker through a fifth capacitor, the connection point of the fifth capacitor and the signal input end of the loudspeaker is grounded through a fifth series branch, and a sixth capacitor and a ninth resistor are sequentially connected in series on the fifth series branch.
2. The high decibel volume buzzing reminder device according to claim 1, wherein the NE556 dual time base module includes a first control voltage terminal, a second control voltage terminal, a first main reset terminal, a second output terminal, and a ground terminal; the audio power amplification integrated module comprises a grounding end;
the first control voltage end is grounded through a seventh capacitor, and the second control voltage end is connected with the first control voltage end; the first main reset end is connected with a second output end, and the second main reset end is connected with the power supply end;
the ground terminal of the NE556 dual time-base module and the ground terminal of the audio power amplification integrated module are grounded.
3. The high decibel volume buzzing reminder device according to claim 1, wherein the power supply terminal is grounded through a filter module, and the filter module is composed of an eighth capacitor and a ninth capacitor arranged in parallel.
4. The high decibel volume buzzing warning device for warning according to claim 1, wherein the audio power amplification integrated module is a TDA2002 audio power amplification integrated chip.
5. A buzzing reminding circuit with high decibel volume for warning is characterized by comprising a power supply end, an NE556 double-time-base module and an audio power amplification integrated module;
the NE556 double-time-base module comprises a first discharging end, a second discharging end, a first threshold voltage end, a second threshold voltage end, a first output end, a first trigger input end, a second trigger input end and a positive power supply end; the audio power amplification integrated module comprises a non-inverting input end, an output end and a positive power supply end;
the positive power supply end of the NE556 double-time-base module is connected with the power supply end, the power supply end is grounded through a first series branch, a first resistor, a second resistor and a first capacitor are sequentially arranged on the first series branch in series, a connection point of the first resistor and the second resistor is connected with the first discharge end, and a connection point of the second resistor and the first capacitor is connected with the first threshold voltage end and the first trigger input end;
the power supply end is grounded through a second series branch, a third resistor, a fourth resistor and a second capacitor are sequentially arranged on the second series branch in series, the connection point of the third resistor and the fourth resistor is connected with the second discharge end, and the connection point of the fourth resistor and the second capacitor is connected with the second threshold voltage end and the second trigger input end;
the first output end is grounded through a third series branch, a fifth resistor and a sixth resistor are sequentially connected in series on the third series branch, the connection point of the fifth resistor and the sixth resistor is connected with the non-inverting input end through a third capacitor, the inverting input end is grounded through a fourth series branch, a fourth capacitor and a seventh resistor are sequentially connected in series on the fourth series branch, and the connection point of the fourth capacitor and the seventh resistor is connected with the output end of the audio power amplification integrated module through an eighth resistor; the positive power supply end of the audio power amplification integrated module is connected with the power supply end;
the output end of the audio power amplification integrated module is used for being connected with the signal input end of the loudspeaker through a fifth capacitor, the connecting point of the fifth capacitor and the signal input end of the loudspeaker is grounded through a fifth series branch, and a sixth capacitor and a ninth resistor are sequentially connected in series on the fifth series branch.
6. The high decibel volume buzzing alert circuit as claimed in claim 5, wherein said NE556 dual time base module includes a first control voltage terminal, a second control voltage terminal, a first main reset terminal, a second output terminal and a ground terminal; the audio power amplification integrated module comprises a grounding end;
the first control voltage end is grounded through a seventh capacitor, and the second control voltage end is connected with the first control voltage end; the first main reset end is connected with a second output end, and the second main reset end is connected with the power supply end;
the ground terminal of the NE556 dual time-base module and the ground terminal of the audio power amplification integrated module are grounded.
7. The high decibel volume buzzing warning circuit for warning as claimed in claim 5, wherein the power supply terminal is grounded through a filter module, and the filter module is composed of an eighth capacitor and a ninth capacitor which are arranged in parallel.
8. The warning high decibel volume buzzing reminding circuit according to claim 5, wherein the audio power amplification integrated module is a TDA2002 audio power amplification integrated chip.
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| CN201922430147.5U CN211788142U (en) | 2019-12-30 | 2019-12-30 | High-decibel volume buzzing reminding device and circuit for warning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922430147.5U CN211788142U (en) | 2019-12-30 | 2019-12-30 | High-decibel volume buzzing reminding device and circuit for warning |
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| CN211788142U true CN211788142U (en) | 2020-10-27 |
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| CN201922430147.5U Active CN211788142U (en) | 2019-12-30 | 2019-12-30 | High-decibel volume buzzing reminding device and circuit for warning |
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