CN220475929U - Printer voice broadcast circuit - Google Patents
Printer voice broadcast circuit Download PDFInfo
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- CN220475929U CN220475929U CN202322162752.5U CN202322162752U CN220475929U CN 220475929 U CN220475929 U CN 220475929U CN 202322162752 U CN202322162752 U CN 202322162752U CN 220475929 U CN220475929 U CN 220475929U
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- 239000003990 capacitor Substances 0.000 claims description 25
- 238000001914 filtration Methods 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 210000005069 ears Anatomy 0.000 claims description 3
- 230000005236 sound signal Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Abstract
The utility model relates to the technical field of printers, in particular to a voice broadcasting circuit of a printer; the digital signal processing circuit comprises a TTS voice circuit and a printer voice circuit, wherein the TTS voice circuit is electrically connected with the printer voice circuit, and comprises a first operational amplifier module, an adjustable resistor R1 and a resistor R3, so that a differential signal can be converted into a single-ended signal and the single-ended signal can be amplified; the printer voice circuit comprises a second operational amplifier module, an adjustable resistor R11 and a resistor R13, and can convert a differential signal into a single-ended signal and adjust the single-ended signal to be consistent with the single-ended signal of the TTS voice circuit; the printer can report the voice set by the printer.
Description
Technical Field
The utility model relates to the technical field of printers, in particular to a voice broadcasting circuit of a printer.
Background
Most of the voice broadcasting functions of the thermosensitive intelligent cloud printers in the market are to record common voices in a voice chip in advance, and call the voices recorded in the voice chip to broadcast through a differential signal output mode when the voices are required to be broadcast.
In this way, for different shops and clients, those needs to purchase the thermosensitive intelligent cloud printer with the appointed voice, once the shops are replaced, the previous thermosensitive intelligent cloud printer is not suitable any more, only other thermosensitive intelligent cloud printers suitable for the shops can be replaced, and the business needs to record the voice belonging to the characteristics of the shops, so that the universality of the thermosensitive intelligent cloud printer is reduced.
The above problems are to be solved.
Disclosure of Invention
Aiming at the problem that the voice broadcasting system of the existing thermosensitive intelligent cloud printer is low in universality, the utility model provides a printer voice broadcasting circuit for solving the problem.
In order to achieve the above purpose, the present utility model is realized by the following technical scheme:
the application discloses a printer voice broadcasting circuit which is characterized by comprising a TTS voice circuit and a printer voice circuit, wherein the TTS voice circuit is electrically connected with the printer voice circuit, and comprises a first operational amplifier module, an adjustable resistor R1 and a resistor R3, so that a differential signal can be converted into a single-ended signal and the single-ended signal can be amplified; the printer voice circuit comprises a second operational amplifier module, an adjustable resistor R11 and a resistor R13, and can convert a differential signal into a single-ended signal and adjust the single-ended signal to be consistent with the single-ended signal of the TTS voice circuit.
Optionally, the TTS voice circuit further includes a first low-pass filtering module, where the first low-pass filtering module includes a resistor R2, a resistor R5, a capacitor C5, and a capacitor C6; the printer voice circuit further comprises a second low-pass filtering module, the second low-pass filtering module comprises a resistor R12, a resistor R15, a capacitor C12 and a capacitor C13, and the first low-pass filtering module and the second low-pass filtering module can filter out frequencies which are heard by human ears.
Optionally, the TTS voice circuit further includes a first isolated dc module and a second isolated dc module; the first isolated DC module comprises C2 and C4, and the second isolated DC module comprises C9 and C11; the first isolated DC module and the second isolated DC module can filter DC signals of the audio signals.
Optionally, the reference voltage module comprises a resistor R7, a resistor R9, a coupling capacitor C7 and a coupling capacitor C8; r7 and R9 constitute bleeder circuit, and R7 sets up the input at voltage, can raise the differential signal of input wholly more than 0V, and the output is after the operational amplifier again.
Optionally, the device further comprises an audio power amplifier and a loudspeaker, wherein the audio power amplifier and the loudspeaker are arranged at the output end.
Optionally, a third isolated direct current module is arranged between the audio power amplifier and the first operational amplifier, and a fourth isolated direct current module is arranged between the audio power amplifier and the second operational amplifier; the third isolated DC module comprises a capacitor C3 and a resistor R4, and the fourth isolated DC module comprises a capacitor C10 and a resistor R14.
The utility model has the beneficial effects that:
the utility model is connected with the TTS voice circuit in the original printer voice broadcasting circuit, the TTS voice circuit can convert digital information into voice signals through the internal voice synthesis technology, and the digital information is combined with the internal circuit of the printer voice chip through circuit connection, so that the printer can broadcast the set voice.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a circuit connection block diagram of the present application;
fig. 2 is a circuit connection diagram of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
As used in this specification and the appended claims, the term "if" may be interpreted as "when..once" or "in response to a determination" or "in response to detection" depending on the context. Similarly, the phrase "if a determination" or "if a [ described condition or event ] is detected" may be interpreted in the context of meaning "upon determination" or "in response to determination" or "upon detection of a [ described condition or event ]" or "in response to detection of a [ described condition or event ]".
In addition, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.
Referring to fig. 1, an embodiment of the application discloses a voice broadcast circuit of a printer, which includes a TTS voice circuit and a printer voice circuit, wherein the TTS voice circuit is electrically connected with the printer voice circuit, and the TTS voice circuit includes a first operational amplifier module, an adjustable resistor R1 and a resistor R3, so as to convert a differential signal into a single-ended signal and amplify the single-ended signal; the printer voice circuit comprises a second operational amplifier module, an adjustable resistor R11 and a resistor R13, and can convert a differential signal into a single-ended signal and adjust the single-ended signal to be consistent with the single-ended signal of the TTS voice circuit.
By way of example, the TTS voice circuit is not limited herein as it is prior art.
In the TTS voice circuit, a second operational amplifier module, an adjustable resistor R11 and a resistor R13 are provided, the gain formula of the second operational amplifier module is Avd = -R11/R13, the size of Avd can be adjusted by adjusting the size of the adjustable resistor R11, the differential signal size can be converted into single-ended and amplified size, and then the two paths of signals are mixed together and amplified by outputting to an audio power amplifier, and the volume is consistent.
Illustratively, the TTS voice circuit further includes a first low-pass filtering module including a resistor R2, a resistor R5, a capacitor C5, and a capacitor C6; the printer voice circuit further comprises a second low-pass filtering module, the second low-pass filtering module comprises a resistor R12, a resistor R15, a capacitor C12 and a capacitor C13, and the first low-pass filtering module and the second low-pass filtering module can filter out frequencies which are heard by human ears.
Illustratively, the TTS voice circuit further includes a first isolated dc module and a second isolated dc module; the first isolated DC module comprises C2 and C4, and the second isolated DC module comprises C9 and C11; the first isolated DC module and the second isolated DC module can filter DC signals of the audio signals.
Illustratively, the reference voltage module further comprises a reference voltage module comprising a resistor R7, a resistor R9, a coupling capacitor C7 and a coupling capacitor C8; r7 and R9 constitute bleeder circuit, and R7 sets up the input at voltage, and in order to avoid the differential signal reference voltage of input to be GND, differential signal is provided with negative voltage, and operational amplifier negative voltage filters, causes the distortion, inserts a reference voltage VCC in the circuit, can raise the signal of the negative half cycle of input difference wholly more than 0V, and the output is after the operational amplifier again.
The audio power amplifier and the loudspeaker are arranged at the output end, so that the set voice in the TTS voice circuit can be played.
The audio power amplifier comprises an audio power amplifier, a first operational amplifier, a second operational amplifier, a third isolation direct current module, a fourth isolation direct current module and a fourth isolation direct current module, wherein the third isolation direct current module is arranged between the audio power amplifier and the first operational amplifier; the third isolated direct current module comprises a capacitor C3 and a resistor R4, the fourth isolated direct current module comprises a capacitor C10 and a resistor R14, and the isolated direct current capacitor R3 can isolate the direct current part of the differential signal.
Examples: the utility model sets operational amplifier module in printer voice circuit and TTS voice circuit, adjusts the differential signal size by adjusting the gain, and converts into single-ended signal and amplifies, then mixes the two signals together, and can realize the consistent volume after output to audio power amplifier for amplifying.
The device elements in the above embodiments are conventional device elements unless otherwise specified, and the connection and control methods are conventional connection and control methods unless otherwise specified.
While the utility model has been described with reference to the embodiments, those skilled in the art will understand that various specific parameters in the above embodiments may be changed without departing from the spirit of the utility model, and thus a plurality of specific embodiments are common variation ranges of the utility model, and will not be described in detail herein.
Claims (6)
1. The printer voice broadcasting circuit is characterized by comprising a TTS voice circuit and a printer voice circuit, wherein the TTS voice circuit is electrically connected with the printer voice circuit, and comprises a first operational amplifier module, an adjustable resistor R1 and a resistor R3, so that a differential signal can be converted into a single-ended signal and the single-ended signal can be amplified; the printer voice circuit comprises a second operational amplifier module, an adjustable resistor R11 and a resistor R13, and can convert a differential signal into a single-ended signal and adjust the single-ended signal to be consistent with the single-ended signal of the TTS voice circuit.
2. The voice broadcast circuit of claim 1, wherein the TTS voice circuit further comprises a first low-pass filter module comprising a resistor R2, a resistor R5, a capacitor C5, and a capacitor C6; the printer voice circuit further comprises a second low-pass filtering module, the second low-pass filtering module comprises a resistor R12, a resistor R15, a capacitor C12 and a capacitor C13, and the first low-pass filtering module and the second low-pass filtering module can filter out frequencies which are heard by human ears.
3. The voice broadcast circuit of claim 1, wherein the TTS voice circuit further comprises a first isolated dc module and a second isolated dc module; the first isolated DC module comprises C2 and C4, and the second isolated DC module comprises C9 and C11; the first isolated DC module and the second isolated DC module can filter DC signals of the audio signals.
4. The voice broadcast circuit of claim 1, further comprising a reference voltage module comprising a resistor R7, a resistor R9, a coupling capacitor C7, and a coupling capacitor C8; r7 and R9 constitute bleeder circuit, and R7 sets up the input at voltage, can raise the differential signal of input wholly more than 0V, and the output is after the operational amplifier again.
5. The voice broadcast circuit of claim 1, further comprising an audio power amplifier and a speaker, the audio power amplifier and speaker being disposed at the output.
6. The voice broadcast circuit of claim 5, wherein a third isolated dc module is disposed between the audio power amplifier and the first operational amplifier, and a fourth isolated dc module is disposed between the audio power amplifier and the second operational amplifier; the third isolated DC module comprises a capacitor C3 and a resistor R4, and the fourth isolated DC module comprises a capacitor C10 and a resistor R14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322162752.5U CN220475929U (en) | 2023-08-11 | 2023-08-11 | Printer voice broadcast circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322162752.5U CN220475929U (en) | 2023-08-11 | 2023-08-11 | Printer voice broadcast circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220475929U true CN220475929U (en) | 2024-02-09 |
Family
ID=89805537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322162752.5U Active CN220475929U (en) | 2023-08-11 | 2023-08-11 | Printer voice broadcast circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220475929U (en) |
-
2023
- 2023-08-11 CN CN202322162752.5U patent/CN220475929U/en active Active
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