CN113726618A

CN113726618A - Audio AIOT module based on control through mobile equipment

Info

Publication number: CN113726618A
Application number: CN202110980172.XA
Authority: CN
Inventors: 王晓乐; 高照; 刘卓凡; 熊运自
Original assignee: Huizhou Gaoshengda Technology Co Ltd
Current assignee: Huizhou Gaoshengda Technology Co Ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2021-11-30

Abstract

The invention discloses an audio AIOT module based on control through mobile equipment, which comprises a power supply module, a voice wireless module, an MIC module, an audio module and an ADC module, wherein one end of the power supply module is used for being connected into household electrical appliance equipment, and the output end of the power supply module is respectively connected with the voice wireless module, the MIC module, the audio module and the ADC module; the audio module comprises a power amplifier unit and a loudspeaker unit, the power amplifier unit is electrically connected with the loudspeaker unit, the power amplifier unit is also electrically connected with the voice wireless module, the ADC module is respectively electrically connected with the power amplifier unit and the loudspeaker unit, and the MIC module is electrically connected with the voice wireless module. The invention can be connected with WIFI, Bluetooth and a serial port, and has a multifunctional communication mode and a firmware upgrading mode; the voice module can be controlled in two modes of face-to-face voice communication with the module and control of the module through the mobile phone, the control modes are various, and the face-to-face control limitation is broken through more convenience in use; and can provide stable power for the whole voice module.

Description

Audio AIOT module based on control through mobile equipment

Technical Field

The invention relates to the field of voice modules, in particular to an audio AIOT module based on control through mobile equipment.

Background

Along with the development of intelligent house and thing networking, the speech module is increasing in market demands such as air conditioner, refrigerator, and the demand that society people is expanding day by day makes house intellectuality become a trend nowadays.

However, the existing voice module usually has only a single communication mode, and the existing voice module can only realize a single control mode, so that the user is troublesome to use and complicated to operate; in addition, the power supply of the existing voice module is not very stable, which easily causes the abnormal condition of the voice module.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides an audio AIOT module based on mobile equipment control, which can be connected with WIFI, Bluetooth and a serial port and has a multifunctional communication mode and a firmware upgrading mode; the voice module can be controlled in two modes of face-to-face voice communication with the module and control of the module through the mobile phone, the control modes are various, and the face-to-face control limitation is broken through more convenience in use; and through setting up DCDC module, can provide stable power for whole voice module.

The purpose of the invention is realized by the following technical scheme:

an audio AIOT module based on control by a mobile device, comprising: the household appliance control system comprises a power supply module, a voice wireless module, an MIC module, an audio module and an ADC module, wherein one end of the power supply module is used for being connected with household appliances, and the output end of the power supply module is respectively connected with the voice wireless module, the MIC module, the audio module and the ADC module;

the audio module includes power amplifier unit and loudspeaker unit, the power amplifier unit with loudspeaker unit electricity is connected, the power amplifier unit still with pronunciation wireless module electricity is connected, and the ADC module respectively with the power amplifier unit with loudspeaker unit electricity is connected, the MIC module with pronunciation wireless module electricity is connected.

Preferably, the voice wireless module comprises a main control chip, the main control chip comprises a voice unit and a WIFI-BT unit, and the voice unit and the WIFI-BT unit are respectively and electrically connected with the power module.

Preferably, the power module includes a first DCDC unit, a second DCDC unit and a third DCDC unit, an input end of the first DCDC unit is used for accessing the household appliance, an output end of the first DCDC unit is electrically connected with an input end of the second DCDC unit, an output end of the second DCDC unit is electrically connected with an input end of the third DCDC unit and the voice unit, respectively, and an output end of the third DCDC unit is electrically connected with the WIFI-BT unit.

Preferably, the first DCDC unit includes a voltage dropping pipe Q2, and the voltage dropping pipe Q2 is used to convert a 12V voltage into a 5V voltage and transmit the 5V voltage into the second DCDC unit.

Preferably, the second DCDC unit includes a voltage dropping pipe Q4, the voltage dropping pipe Q4 is used to convert a 5V voltage into a 3.3V voltage and transmit the 3.3V voltage to the third DCDC unit and the voice unit.

Preferably, the third DCDC unit includes a voltage dropping pipe Q5, and the voltage dropping pipe Q5 is used for converting a 3.3V voltage into a 1.1V voltage and transmitting the 1.1V voltage into the WIFI-BT unit.

Preferably, the voice wireless module further includes a burning interface J1, and the burning interface J1 is electrically connected to the voice wireless chip.

Preferably, the power module further comprises a level conversion unit, one end of the level conversion unit is electrically connected with the voice wireless module, and the other end of the level conversion unit is used for accessing the household appliance.

Compared with the prior art, the invention has the following advantages and beneficial effects:

the invention relates to an audio AIOT module based on control through mobile equipment, which can be connected with WIFI, Bluetooth and a serial port by arranging a power supply module, a voice wireless module, an MIC module, an audio module and an ADC module, and has a multifunctional communication mode and a firmware upgrading mode; the voice module can be controlled in two modes of face-to-face voice communication with the module and control of the module through the mobile phone, the control modes are various, and the face-to-face control limitation is broken through more convenience in use; and through setting up DCDC module, can provide stable power for whole voice module.

Drawings

FIG. 1 is a functional block diagram of an audio AIOT module based on control by a mobile device according to an embodiment of the present invention;

FIG. 2 is a circuit diagram of the voice radio shown in FIG. 1;

FIG. 3 is a circuit diagram of a first DCDC unit of the power module shown in FIG. 1;

FIG. 4 is a circuit diagram of a second DCDC unit of the power module shown in FIG. 1;

FIG. 5 is a circuit diagram of a third DCDC unit of the power module shown in FIG. 1;

FIG. 6 is a circuit diagram of the MIC module shown in FIG. 1;

FIG. 7 is a circuit diagram of the audio module shown in FIG. 1;

fig. 8 is a circuit diagram of the ADC module shown in fig. 1.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1, an audio AIOT module based on control by a mobile device includes: power module 100, pronunciation wireless module 200, MIC module 300, audio module 400 and ADC module 500, power module's one end is used for inserting tame electric installation, power module's output respectively with pronunciation wireless module the MIC module the audio module with the ADC module is connected. It should be noted that the power module 100 is configured to provide power for the whole module, and the voice wireless module 200 has a voice module with WIFI/BT function; the MIC module 300 is configured to receive a voice signal; the audio module 400 is configured to amplify an audio signal and implement playing through a speaker; the ADC module 500 is used to collect data.

Referring to fig. 1, the audio module 400 includes a power amplifier unit and a speaker unit, the power amplifier unit is electrically connected to the speaker unit, the power amplifier unit is further electrically connected to the voice wireless module, the ADC module is electrically connected to the power amplifier unit and the speaker unit, respectively, and the MIC module is electrically connected to the voice wireless module. It should be noted that the power amplification unit is configured to amplify an audio signal, and the speaker unit is configured to play broadcast information.

Referring to fig. 2, the voice wireless module includes a main control chip, the main control chip includes a voice unit and a WIFI-BT unit, and the voice unit and the WIFI-BT unit are electrically connected to the power module respectively. It should be noted that the voice unit and the WIFI-BT unit are integrated in a voice wireless chip.

In this embodiment, the voice wireless module further includes a recording interface J1, and the recording interface J1 is electrically connected to the voice wireless chip. The power module further comprises a level conversion unit, one end of the level conversion unit is electrically connected with the voice wireless module, and the other end of the level conversion unit is used for accessing household appliances.

Specifically, as the main control chip contains a voice and WIFI/BT module, the 3.3V is input to the

pins

3 and 4 for supplying power to the module, the pin 22 is supplied with power by 3.3V for supplying power to the internal voice module, and the pin 23 is supplied with power by 1.1V for supplying power to the internal WIFI/BT chip;

pins

1, 2, 19, 20, 21, 52, 53, 54, 57, 62, 65, 66, 67-84 are GND and all need to be grounded;

pins

8 and 9 are connected with a level conversion IC Q3 and are used for serial port voltage conversion; the

pins

15, 17 and 18 are connected with a power amplification unit U2 and are used for communicating with the power amplification unit, wherein the resistor R13, the resistor R14, the resistor R15 and the resistor R17 are used for effectively improving EMC;

pins

26 and 27 are debugging ports, resistors R27-R30 are resistors for improving EMC, resistors R31, R32 and R33 are resistors for preventing ESD suppression overshoot,

pins

45, 46 and 47 are debugging ports, resistors R9 and R11 are resistors for preventing ESD suppression overshoot,

pins

16, 63 and 64 are burning firmware serial ports, wherein J1, J2 and J3 are module test points respectively.

Referring to fig. 3 to 5, the power module includes a first DCDC unit, a second DCDC unit, and a third DCDC unit, an input end of the first DCDC unit is used for accessing a household appliance, an output end of the first DCDC unit is electrically connected to an input end of the second DCDC unit, an output end of the second DCDC unit is electrically connected to an input end of the third DCDC unit and the voice unit, respectively, and an output end of the third DCDC unit is electrically connected to the WIFI-BT unit.

In the present embodiment, the first DCDC unit includes a voltage dropping pipe Q2, and the voltage dropping pipe Q2 is used to convert a 12V voltage into a 5V voltage and transmit the 5V voltage to the second DCDC unit. The second DCDC unit includes a voltage dropping pipe Q4, the voltage dropping pipe Q4 is used to convert a 5V voltage into a 3.3V voltage and transmit the 3.3V voltage into the third DCDC unit and the voice unit. The third DCDC unit includes a voltage dropping pipe Q5, the voltage dropping pipe Q5 is used to convert a 3.3V voltage into a 1.1V voltage and transmit the 1.1V voltage into the WIFI-BT unit.

Fig. 3 shows a 12V to 5V step-down circuit, in which the step-down transistor Q2 is a DCDC step-down transistor. 12V input voltage passes through a voltage reducing tube Q2, feedback matching is carried out by taking a resistor R76 and a resistor R81 as feedback resistors, and 5V stable voltage is output; fig. 4 shows a voltage reducing circuit for converting 5V to 3.3V, wherein the voltage reducing tube Q4 is a DCDC voltage reducing tube. 5V input voltage passes through a voltage reducing tube Q4, a resistor RD4 and a resistor RD5 are used as feedback resistors for feedback matching, and 3.3V stable voltage is output to supply power to the main control chip and the voice chip in the main control chip; fig. 5 shows a voltage reducing circuit for converting 3.3V to 1.1V, wherein the voltage reducing tube Q5 is a DCDC voltage reducing tube. The 3.3V input voltage passes through a voltage reducing tube Q5, a resistor RD7 and a resistor RD8 are used as feedback resistors for feedback matching, and 1.1V stable voltage is output to supply power to a WIFI/BT chip in the main control chip; wherein the C7-C14 capacitors are filter capacitors

Referring to fig. 6, fig. 6 shows a MIC microphone circuit, where CONT2 is a microphone connector. Wherein

pins

1, 3, 5, 7, 10 are grounded; the pin 2 is a 3.3V voltage supply pin, wherein the capacitor C65 and the capacitor C66 are filter capacitors; the

pins

4, 6 and 8 are communication pins and are respectively communicated with the main control chip through a resistor R70, a resistor R71 and a resistor R72, wherein the resistor is used for improving the EMC in the circuit, the capacitor C62, the capacitor C63 and the capacitor C64 are filter capacitors, and the diode D3, the diode D4 and the diode D5 are respectively anti-static tubes to prevent static electricity from influencing the module.

Fig. 7 is a power amplifier circuit, where U2 is a power amplifier IC, pin 1 is a monitoring selection pin for selecting a monitoring mode, pin 2 is an enable pin, low level triggering is performed, resistor R18 and resistor R35 are pull-up and pull-down functions, resistor R10 and resistor R12 are pull-up resistors, resistor R19 is a pull-down resistor, and capacitor C16 is a filter capacitor;

pins

3, 4, 6, and 7 provide clock pulses for the chip U2, the pulse signals are controlled by the WIFI/BT unit in the main control chip, and pin 5 is an audio data output and control pin of the WIFI/BT unit in the main control chip, wherein the capacitor C17, the capacitor C18, and the capacitor C19 are filter capacitors, and the resistor R39 and the resistor R40 function to reduce EVM in a line; pin 8 is a data output pin;

pins

9, 23 and 14 are power supply pins of the U2 chip; the

pins

20 and 22 are LB and LA output pins, a differential circuit is formed by an inductor FB3, an inductor FB4, a capacitor C36, a resistor R46, a resistor R45, a capacitor C33 and a capacitor C39, differential data processing is performed on the amplification circuit, and the amplification circuit is output to a horn/speaker, wherein the capacitor C37, the capacitor C38, the capacitor C41 and the capacitor C40 are used for improving EMC, and the CONT3 is a speaker connector.

FIG. 8 shows an ADC circuit, where U3 is an ADC chip and

pins

1 and 5 are power supply pins of U3 chip; the

pins

6, 20 and 19 are used for providing clock pulses for the chip U3 by the main control chip;

pins

3 and 7 are audio data output and control pins of a voice module in the main control chip, the related resistance of the circuit is used for reducing EVM in the circuit,

pins

8 and 17 are ADC data control pins of U3, and the resistors R66-R69 are used for voltage division;

pins

9 and 10 are analog signal output pins of the ADC, wherein a capacitor C42 and a capacitor C51 isolate direct current, are connected to test points TP2 and TP3, a resistor R49 to a resistor R53, a resistor R60 to a resistor R63 and a resistor R58 perform voltage division, and simultaneously form an RC circuit with a capacitor C45 to a capacitor C47 and a capacitor C53 to a capacitor C55 in a circuit to perform a delay filtering function, and finally, the signal is output to a differential circuit to perform differential data processing and output to a speaker.

The above embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An audio AIOT module based on control by a mobile device, comprising: the household appliance control system comprises a power supply module, a voice wireless module, an MIC module, an audio module and an ADC module, wherein one end of the power supply module is used for being connected with household appliances, and the output end of the power supply module is respectively connected with the voice wireless module, the MIC module, the audio module and the ADC module;

2. The audio AIOT module based on control through a mobile device according to claim 1, wherein the voice wireless module comprises a main control chip, the main control chip comprises a voice unit and a WIFI-BT unit, and the voice unit and the WIFI-BT unit are respectively electrically connected with the power supply module.

3. The audio AIOT module based on control through mobile device according to claim 2, wherein the power module comprises a first DCDC unit, a second DCDC unit and a third DCDC unit, an input end of the first DCDC unit is used for accessing household appliances, an output end of the first DCDC unit is electrically connected with an input end of the second DCDC unit, an output end of the second DCDC unit is electrically connected with an input end of the third DCDC unit and the voice unit respectively, and an output end of the third DCDC unit is electrically connected with the WIFI-BT unit.

4. The mobile device control-based audio AIOT module according to claim 3, wherein said first DCDC unit comprises a buck tube Q2, said buck tube Q2 is configured to convert 12V voltage to 5V voltage and transmit 5V voltage into a second DCDC unit.

5. The mobile device control-based audio AIOT module according to claim 3, wherein said second DCDC unit comprises a buck tube Q4, said buck tube Q4 is configured to convert a 5V voltage to a 3.3V voltage and transmit a 3.3V voltage into said third DCDC unit and said voice unit.

6. The mobile device control-based audio AIOT module according to claim 3, wherein said third DCDC unit comprises a buck tube Q5, said buck tube Q5 is configured to convert a 3.3V voltage to a 1.1V voltage and transmit the 1.1V voltage into the WIFI-BT unit.

7. The audio-based AIOT module according to claim 2 further comprising a burn interface J1, the burn interface J1 being electrically connected to the audio wireless chip.

8. The audio AIOT module according to claim 1 wherein the power module further comprises a level shifter unit, one end of the level shifter unit is electrically connected to the voice radio module, and the other end of the level shifter unit is configured to access a home appliance.