CN211519381U

CN211519381U - Intelligent voice prompting device

Info

Publication number: CN211519381U
Application number: CN201922293813.5U
Authority: CN
Inventors: 库光盛; 刘琪峰
Original assignee: Guangzhou Ningsheng Electronic Technology Co ltd
Current assignee: Guangzhou Ningsheng Electronic Technology Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-18
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses an intelligent voice prompter, which comprises a power circuit, a master control circuit, an audio pre-processing circuit, an audio signal detection switching circuit, a clock circuit and a digital power amplifier circuit; the power supply circuit is connected with the clock circuit, the master control circuit, the audio preprocessing circuit and the audio signal detection switching circuit to realize power supply; the output end of the clock circuit is connected with the input end of the main control circuit and provides a clock signal for the main control circuit; the output end of the main control circuit is respectively connected with the input ends of the audio signal detection switching circuit, the digital power amplifier circuit and the audio front-end circuit; the output end of the audio signal detection switching circuit is connected with the input end of the audio front-end circuit, and the output end of the audio front-end circuit is connected with the input end of the digital power amplifier circuit. The volume in the day and at night can be automatically controlled, and the problem that the volume is large at night and disturbs residents is solved; the left-right steering and reversing voice prompter is integrated into a whole, so that the installation is convenient, and resources are saved.

Description

Intelligent voice prompting device

Technical Field

The utility model relates to an mobile unit technical field especially relates to an intelligence voice prompt.

Background

With the continuous development and progress of science and technology, more and more electronic equipment is applied to the vehicle, and an intelligent voice prompter is one of the electronic equipment; the existing vehicle-mounted intelligent voice prompter has the same loud sound in the daytime and at night, and has the problem of disturbing residents at night; and the existing left and right steering and backing voice prompters of the truck and the passenger car are spliced together, so that the installation is not facilitated, and the problem of resource waste exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide an intelligence voice prompt, solved the problem that present on-vehicle intelligent voice prompt exists.

The purpose of the utility model is realized through the following technical scheme: an intelligent voice prompter comprises a power supply circuit, a main control circuit, an audio preprocessing circuit, an audio signal detection switching circuit, a clock circuit and a digital power amplifier circuit;

the power supply circuit is connected with the clock circuit, the master control circuit, the audio preprocessing circuit and the audio signal detection switching circuit to realize power supply; the output end of the clock circuit is connected with the input end of the main control circuit and provides a clock signal for the main control circuit; the output end of the main control circuit is respectively connected with the input ends of the audio signal detection switching circuit, the digital power amplifier circuit and the audio front-end circuit; the output end of the audio signal detection switching circuit is connected with the input end of the audio front-end circuit, and the output end of the audio front-end circuit is connected with the input end of the digital power amplifier circuit.

Further, the power supply circuit comprises a first linear voltage regulation chip U4, two second linear voltage regulation chips IC3 and IC5 and a standby switch control MOS tube Q6; the drain electrode of the MOS tube Q6 is connected with the first linear voltage stabilizing chip U4, and the source electrode is connected with the second linear voltage stabilizing chip IC 3; the second linear voltage stabilizing chip IC5 is connected in series with the first linear voltage stabilizing chip U4;

the voltage output end of the second linear voltage-stabilizing chip IC3 is connected with the power supply input ends of the main control circuit and the clock circuit; the voltage output end of the second linear voltage-stabilizing chip IC5 is connected with the power supply input ends of the audio pre-processing circuit and the audio signal detection switching circuit.

Further, the main control circuit comprises a singlechip IC 2; the grid electrode of the MOS tube Q6 is connected with the 38 th pin of the singlechip IC 2; the voltage output end of the second linear voltage-stabilizing chip IC5 is connected with the 5V MIC power supply end of the singlechip IC2, and the voltage output end of the second linear voltage-stabilizing chip IC3 is connected with the 5V CPU power supply end of the singlechip IC 2; the 37 th pin of the singlechip IC2 is connected with the input end of the digital power amplifier circuit, the K1-K7 end of the singlechip IC2 is connected with the input end of the audio preprocessing circuit, and the 29 th, 30 th, 33 th and 34 th pins are connected with the input end of the audio signal detection switching circuit.

Further, the audio signal detection switching circuit comprises an operational amplifier chip IC17 and a logic chip IC 16; a 29 th pin of the singlechip IC2 is connected with a 10 th pin of the logic chip IC16, and a 30 th pin of the IC2 is connected with a 9 th pin of the IC 16; the output end of the logic chip IC16 is connected with the input end of the operational amplifier chip IC 17.

Further, the audio pre-processing circuit comprises an audio processing chip IC1, U1, and U2; the K1-K7 end of the singlechip IC2 is connected with the same ends of the K1-K7 ends of the U1 and the U2, the 33 th pin of the singlechip IC2 is connected with the 6 th pin of the IC1, and the 34 th pin of the IC2 is connected with the 7 th pin of the IC 1; u1 and U2 are connected with IC 1; the output of the logic chip IC16 is connected to

pins

8 and 9 of IC 1.

Further, the digital power amplifier circuit comprises a digital power amplifier chip IC 4; the output end of the singlechip is connected with a 25 th pin of a digital power amplifier chip IC 4; the output end of the audio pre-processing circuit is connected with pins 29 to 32 of a digital power amplifier chip IC 4.

Further, the clock circuit includes a clock chip IC 18; and pins 5-7 of the clock chip IC18 are connected with a clock signal input end of the singlechip IC 2.

The utility model has the advantages that: an intelligent voice prompter can automatically control the volume in the day and at night, and solves the problem that the volume is large at night and disturbs residents; the left-right steering and reversing voice prompter is integrated into a whole, so that the installation is convenient, and resources are saved; two paths of external audio input are integrated, advertisement audio is played normally, and when a station is reported, the station is automatically switched to the station reporting audio.

Drawings

Fig. 1 is a circuit block diagram of the present invention;

FIG. 2 is a power supply circuit diagram;

FIG. 3 is a main control circuit diagram;

FIG. 4 is a schematic diagram of an audio signal detection switching circuit;

FIG. 5 is an audio pre-processing circuit;

FIG. 6 is a circuit diagram of a digital power amplifier;

fig. 7 is a clock circuit diagram.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the utility model is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to which the term refers must have a specific position, 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, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.

As shown in fig. 1, an intelligent voice prompter includes a power circuit, a main control circuit, an audio pre-processing circuit, an audio signal detecting and switching circuit, a clock circuit and a digital power amplifier circuit;

Still include external power amplifier equipment such as loudspeaker, digital power amplifier circuit's output and loudspeaker are connected, are connected with operation indication panel on the master control circuit, and operation indication panel realizes the power supply by power supply circuit.

Further, as shown in fig. 2, the power supply circuit includes a first linear regulator chip U4, two second linear regulator chips IC3 and IC5 and a standby switch control MOS transistor Q6, and peripheral circuits; the drain electrode of the MOS tube Q6 is connected with the first linear voltage stabilizing chip U4, and the source electrode is connected with the second linear voltage stabilizing chip IC 3; the second linear voltage stabilizing chip IC5 is connected in series with the first linear voltage stabilizing chip U4;

The source of MOS pipe Q6 connects 24V input voltage, and first linear regulator chip U4 is the linear regulator chip of 5 ports for convert input voltage into 8V voltage, and second linear regulator chip IC3 and IC5 are three-terminal linear regulator chip, and IC3 is used for converting input power supply into CPU 5V voltage, and IC5 is used for converting input voltage into 5V MIC voltage.

Further, as shown in fig. 3, the main control circuit includes a single chip microcomputer IC2 (model number is STM8S207C8T 6) and a peripheral circuit; the grid electrode of the MOS tube Q6 is connected with the 38 th pin of the singlechip IC 2; the voltage output end of the second linear voltage-stabilizing chip IC5 is connected with the 5V MIC power supply end of the singlechip IC2, and the voltage output end of the second linear voltage-stabilizing chip IC3 is connected with the 5V CPU power supply end of the singlechip IC 2; the 37 th pin of the singlechip IC2 is connected with the input end of the digital power amplifier circuit, the K1-K7 ends (the 28 th-22 th pins) of the singlechip IC2 are connected with the input end of the audio preprocessing circuit, and the 29 th, 30 th, 33 th and 34 th pins are connected with the input end of the audio signal detection switching circuit; the device is mainly used for controlling power amplifier silence, standby, music, voice volume and sound effect control, automatically switching to a corresponding channel according to an audio signal detection result, and providing panel operation and panel display driving.

Further, as shown in fig. 4, the audio signal detection switching circuit includes an operational amplifier chip IC17 and a logic chip IC 16; a 29 th pin of the singlechip IC2 is connected with a 10 th pin of the logic chip IC16, and a 30 th pin of the IC2 is connected with a 9 th pin of the IC 16; the output end of the logic chip IC16 is connected with the input end of the operational amplifier chip IC 17.

Specifically, the BS-L1 and BS-R1 ends of the logic chip IC16 are connected with the BS-L1 and BS-R1 ends of the operational amplifier chip IC 17.

Further, as shown in fig. 5, the audio pre-processing circuit includes an audio processing chip IC1, U1, and U2, and peripheral circuits; the K1-K7 end of the singlechip IC2 is connected with the same ends of the K1-K7 ends of the U1 and the U2, the 33 th pin of the singlechip IC2 is connected with the 6 th pin of the IC1, and the 34 th pin of the IC2 is connected with the 7 th pin of the IC 1; u1 and U2 are connected with IC 1; the output of the logic chip IC16 is connected to

pins

8 and 9 of IC 1.

Specifically, the A-Low1 end of U1 is connected with the A-Low1 end of IC1 and the A-L1 end of a digital power amplifier chip IC4, the A-reverse1 end of U2 is connected with the A-reverse1 end of IC1 and the A-r1 end of the digital power amplifier chip IC4, and the AIN3L end and the AIN3R end of IC1 are connected with the AIN3L end and the AIN3R end of a logic chip IC 16; for implementing volume and effect adjustment of music signals.

Further, as shown in fig. 6, the digital power amplifier circuit includes a digital power amplifier chip IC4 and a peripheral circuit; the output end of the singlechip is connected with a 25 th pin of a digital power amplifier chip IC 4; the output end of the audio pre-processing circuit is connected with pins 29 to 32 of a digital power amplifier chip IC 4.

Further, as shown in fig. 7, the clock circuit includes a clock chip IC 18; and pins 5-7 of the clock chip IC18 are connected with a clock signal input end of the singlechip IC 2.

Specifically, the 1302CLK, 1302DAT and 1302RST ends of the clock chip are connected with the 1302CLK, 1302DAT and 1302RST ends of the single chip microcomputer IC2, and are used for providing clock signals for the main control circuit in real time.

The utility model has the working principle that the maximum characteristic of the utility model realizes the volume in the daytime and at night, and the volume is automatically and independently controlled, thereby solving the problem that the volume is large at night and disturbs residents. The specific realization principle is as follows:

the clock IC-1302 communicates with the main control circuit through IIC buses 1302CLK, 1302DAT and 1302RST, the main control circuit inquires time information of the clock circuit at regular time, once the preset night time is inquired, for example, 20:00 in the example, the preset volume (14 in the example) in the night is sent to the PT2258 through the IIC buses SCL-2258 and SDA-2258 immediately, the volume is adjusted to 14 immediately after the PT2258 receives an instruction, and therefore the volume in the night is reduced, and the problem that the prompt tone in the night disturbs residents is solved.

Similarly, once the master control circuit inquires that the scheduled daytime time is 8:00 in this example, it immediately sends out the scheduled volume (22 in this example) in daytime to the PT2258 through the IIC bus SCL-2258 and SDA-2258, and the PT2258 immediately adjusts the volume to 22 after receiving the command, so that the volume returns to the normal volume 22 in daytime.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An intelligent voice prompter, its characterized in that: the device comprises a power supply circuit, a main control circuit, an audio pre-processing circuit, an audio signal detection switching circuit, a clock circuit and a digital power amplifier circuit;

2. The intelligent voice prompter of claim 1, characterized in that: the power supply circuit comprises a first linear voltage regulation chip U4, two second linear voltage regulation chips IC3 and IC5 and a standby switch control MOS tube Q6; the drain electrode of the MOS tube Q6 is connected with the first linear voltage stabilizing chip U4, and the source electrode is connected with the second linear voltage stabilizing chip IC 3; the second linear voltage stabilizing chip IC5 is connected in series with the first linear voltage stabilizing chip U4;

3. The intelligent voice prompter of claim 2, characterized in that: the main control circuit comprises a singlechip IC 2; the grid electrode of the MOS tube Q6 is connected with the 38 th pin of the singlechip IC 2; the voltage output end of the second linear voltage-stabilizing chip IC5 is connected with the 5V MIC power supply end of the singlechip IC2, and the voltage output end of the second linear voltage-stabilizing chip IC3 is connected with the 5V CPU power supply end of the singlechip IC 2; the 37 th pin of the singlechip IC2 is connected with the input end of the digital power amplifier circuit, the K1-K7 end of the singlechip IC2 is connected with the input end of the audio preprocessing circuit, and the 29 th, 30 th, 33 th and 34 th pins are connected with the input end of the audio signal detection switching circuit.

4. The intelligent voice prompter of claim 3, characterized in that: the audio signal detection switching circuit comprises an operational amplifier chip IC17 and a logic chip IC 16; a 29 th pin of the singlechip IC2 is connected with a 10 th pin of the logic chip IC16, and a 30 th pin of the IC2 is connected with a 9 th pin of the IC 16; the output end of the logic chip IC16 is connected with the input end of the operational amplifier chip IC 17.

5. The intelligent voice prompter of claim 4, characterized in that: the audio pre-processing circuit comprises an audio processing chip IC1, U1 and U2; the K1-K7 end of the singlechip IC2 is connected with the same ends of the K1-K7 ends of the U1 and the U2, the 33 th pin of the singlechip IC2 is connected with the 6 th pin of the IC1, and the 34 th pin of the IC2 is connected with the 7 th pin of the IC 1; u1 and U2 are connected with IC 1; the output of the logic chip IC16 is connected to pins 8 and 9 of IC 1.

6. The intelligent voice prompter of claim 5, characterized in that: the digital power amplifier circuit comprises a digital power amplifier chip IC 4; the output end of the singlechip is connected with a 25 th pin of a digital power amplifier chip IC 4; the output end of the audio pre-processing circuit is connected with pins 29 to 32 of a digital power amplifier chip IC 4.

7. The intelligent voice prompter of claim 3, characterized in that: the clock circuit comprises a clock chip IC 18; and pins 5-7 of the clock chip IC18 are connected with a clock signal input end of the singlechip IC 2.