MIC module circuit integrated with power supply control

By integrating the MIC module circuit with power control and using the PMOS tube to shut down the MIC power input, the problem of high power consumption of the existing MIC module circuit is solved, thus saving energy and reducing equipment costs.

CN223334785UActive Publication Date: 2025-09-12GUANGDONG ZHIANXIN TECH CO LTD
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Patent Information

Application Number
CN202422773538.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-13
Publication Date
2025-09-12
Estimated Expiration
2034-11-13

AI Technical Summary

Technical Problem

The existing MIC module circuit consumes high power when using the voice control function, which increases the cost of equipment use and is difficult to be effectively solved in the social trend of environmental protection and electricity conservation.

Method used

A MIC module circuit with integrated power control is designed. The PMOS tube is used to turn off the power input when the voice reception function is not in use. A control signal is input through the switch control terminal of the PMOS tube to turn off the power of the MIC. Combined with the signal amplification module and filter capacitor, energy saving is achieved.

Benefits of technology

It effectively reduces the waste of electricity, improves the economy and environmental protection of the equipment, and reduces the cost of equipment use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the field of MICs, and particularly relates to an MIC module circuit integrated with power supply control, which is characterized by comprising an MIC for receiving external sound signals; the PMOS tube is used for controlling the switch of the MIC, the drain electrode of the PMOS tube is connected with the MIC, the source electrode of the PMOS tube is connected with the power supply input end, and the grid electrode of the PMOS tube is connected with a switch control end. According to the utility model, when the voice receiving function is not used, the control signal can be input to the PMOS tube through the switch control end, so that the power supply input to the MIC can be closed through the PMOS tube, the waste of electric energy can be effectively avoided, and the circuit is more economical and environment-friendly.
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Description

Technical Field

[0001] The utility model belongs to the field of MIC, and in particular relates to a MIC module circuit integrated with power supply control. Background Art

[0002] In intelligent connected devices, voice interaction is an essential feature. It allows users to send control commands to devices without requiring touch input, and the devices then respond accordingly. A microphone (Microphone) is an energy converter that converts sound signals into electrical signals. For existing devices, adding a MIC module for voice control inevitably increases power consumption and device costs. In today's society, which advocates for energy conservation, environmental protection, and sustainable development, a MIC module that can reduce power loss is urgently needed. Utility Model Content

[0003] In order to solve the above problems, the present invention aims to provide a MIC module circuit with integrated power control. The circuit is integrated with an electronic control switch, which can turn off the circuit when it is not needed, thereby reducing power loss.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present utility model is as follows.

[0005] A MIC module circuit integrated with power supply control, characterized by comprising:

[0006] MIC for receiving external sound signals;

[0007] A PMOS tube for controlling the MIC switch, wherein the drain of the PMOS tube is connected to the MIC, the source of the PMOS tube is connected to the power input terminal, and the gate of the PMOS tube is connected to the switch control terminal.

[0008] In this circuit, when the voice receiving function is not used, a control signal can be input to the PMOS tube through the switch control terminal to turn off the power input to the MIC through the PMOS tube, which can effectively avoid energy waste and is more economical and environmentally friendly.

[0009] Furthermore, the drain of the PMOS tube is connected to the MIC after being connected in series with two resistors.

[0010] Furthermore, the circuit also includes a signal amplifying module for amplifying the electrical signal converted by the MIC. The signal amplifying module is connected to the MIC and is connected to a signal output terminal for connecting to an external MCU.

[0011] Furthermore, the signal amplification module includes a capacitor for filtering and a transistor for amplifying electrical signals.

[0012] Furthermore, the transistor model is S8050.

[0013] Furthermore, the base of the transistor is connected to the capacitor in series and then connected to the MIC, and the collector of the transistor is connected to the signal output end.

[0014] Furthermore, the power input terminal is connected to a power supply with a power voltage of 3.3V.

[0015] Furthermore, a resistor is connected in series to the switch control terminal.

[0016] Furthermore, the PMOS tube model is 2301.

[0017] The beneficial effect of the present invention is that, in the circuit, when the voice receiving function is not used, a control signal can be input to the PMOS tube through the switch control terminal to turn off the power input to the MIC through the PMOS tube, which can effectively avoid energy waste and is more economical and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a circuit principle diagram of the utility model. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] See also Figure 1 This embodiment provides a MIC module circuit with integrated power control, including:

[0021] MIC for receiving external sound signals;

[0022] The PMOS tube Q3 is used to control the MIC switch. The drain of the PMOS tube Q3 is connected to the positive electrode of the MIC, the source of the PMOS tube Q3 is connected to the power input terminal, and the gate of the PMOS tube Q3 is connected to the switch control terminal MIC_POWER_EN.

[0023] Specifically, the negative pole of the MIC is grounded.

[0024] In this embodiment, the drain of the PMOS transistor Q3 is connected in series with the resistor R22 and the resistor R21 and then connected to the positive electrode of the MIC.

[0025] In this embodiment, the circuit further includes a resistor R23 , and two ends of the resistor R23 are connected to the source of the PMOS transistor Q3 and the gate of the PMOS transistor Q3 respectively.

[0026] In this embodiment, the circuit further includes a signal amplifying module for amplifying the electrical signal converted by the MIC. The signal amplifying module is connected to the positive electrode of the MIC and is connected to a signal output terminal MIC_AD for connecting to an external MCU.

[0027] In this embodiment, the signal amplification module includes a capacitor C30 for filtering and a transistor Q2 for amplifying electrical signals.

[0028] In this embodiment, the transistor Q2 is of model S8050.

[0029] In this embodiment, the base of transistor Q2 is connected in series with capacitor C30 and then connected to the positive electrode of MIC, and the collector of transistor Q2 is connected to the signal output terminal MIC_AD. Specifically, the emitter of transistor Q2 is grounded.

[0030] In this embodiment, the power input terminal is connected to a power supply with a power voltage of 3.3V.

[0031] In this embodiment, a 470Ω resistor (not shown) is connected in series to the switch control terminal MIC_POWER_EN.

[0032] In this embodiment, the model of the PMOS transistor Q3 is 2301.

[0033] In this embodiment, the circuit further includes a resistor R20 , and both ends of the resistor R20 are connected to the base of the transistor Q2 and the collector of the transistor Q2 respectively.

[0034] In this embodiment, the circuit further includes a resistor R16 , one end of the resistor R16 is connected to the collector of the transistor Q2 , and the other end of the resistor R16 is connected between the resistor R21 and the resistor R22 .

[0035] In this embodiment, the circuit further includes a capacitor C29 , one end of the capacitor C29 is connected to the resistor R16 , and the other end of the capacitor C29 is grounded.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A MIC module circuit integrated with power control, characterized in that: include: MIC for receiving external sound signals; A PMOS tube for controlling the MIC switch, wherein the drain of the PMOS tube is connected to the MIC, the source of the PMOS tube is connected to the power input terminal, and the gate of the PMOS tube is connected to the switch control terminal.

2. The MIC module circuit integrated with power control according to claim 1, characterized in that: The drain of the PMOS tube is connected to the MIC after being connected in series with two resistors.

3. The MIC module circuit integrated with power control according to claim 1, characterized in that: The circuit also includes a signal amplifying module for amplifying the electrical signal converted by the MIC. The signal amplifying module is connected to the MIC and is connected to a signal output terminal for connecting to an external MCU.

4. The MIC module circuit integrated with power control according to claim 3, characterized in that: The signal amplification module includes a capacitor for filtering and a transistor for amplifying electrical signals.

5. The MIC module circuit integrated with power control according to claim 4, characterized in that: The transistor model is S8050.

6. The MIC module circuit integrated with power control according to claim 4, characterized in that: The base of the transistor is connected to the capacitor in series and then connected to the MIC, and the collector of the transistor is connected to the signal output end.

7. The MIC module circuit integrated with power control according to claim 1, characterized in that: The power input terminal is connected to a power supply with a power supply voltage of 3.3V.

8. The MIC module circuit integrated with power control according to claim 1, characterized in that: The switch control terminal is connected in series with a resistor.

9. The MIC module circuit integrated with power control according to claim 1, characterized in that: The PMOS tube model is 2301.