Programmable microphone control method, control circuit, microphone and electronic cigarette

Abstract

The present invention relates to a programmable microphone control method, a control circuit, a microphone and an electronic cigarette, wherein the method comprises: an MCU connected to the microphone receives a constant voltage / constant effective power / constant power output request required by a user; a PWM value to be output is calculated according to a required value corresponding to the output request input by the user and a feedback value of an output control circuit; when the microphone is triggered, the MCU performs output control on the output control circuit according to the calculated PWM value; by applying the method of the present application, the output of the microphone can be adjusted accordingly according to the constant voltage / constant effective power / constant power output request of the user, and the applicability of the microphone can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of microphone control, and more specifically, to a programmable microphone control method, a control circuit, a microphone and an electronic cigarette. Background Art

[0002] The microphone is an important component of electronic cigarettes and other devices. When it is used in electronic cigarettes, its function is usually to detect whether there is an inhalation action, and send a signal to the main board of the electronic cigarette when the inhalation action is detected to control the start of atomization;

[0003] Most of the existing microphones use fixed output voltage and power, which makes the adaptability of the microphones poor. Different types of electronic cigarettes often have to be equipped with different types of microphones, which greatly increases the material cost. A method for programmable control of the microphone is needed to greatly improve the universal performance of the microphone. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a programmable microphone control method, a programmable microphone control circuit, a microphone and an electronic cigarette in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] Construct a programmable microphone control method, the implementation method is as follows:

[0007] Step 1: The MCU connected to the microphone receives the user's request for constant voltage / constant effective / constant power output;

[0008] Step 2: Calculate the PWM value to be output based on the required value corresponding to the output request input by the user and the feedback value of the output control circuit;

[0009] Step 3: When the microphone is triggered, the MCU controls the output of the output control circuit according to the calculated PWM value.

[0010] The programmable microphone control method described in the present invention, wherein the output control circuit includes a MOS tube and a heating wire; the G pole of the MOS tube is electrically connected to the MCU, the D pole of the MOS tube is electrically connected to the power supply end of the output control circuit, and the S pole of the MOS tube is electrically connected to the output end of the output control circuit; one end of the heating wire is electrically connected to the output end, and the other end is grounded; the MCU is electrically connected to one end of the heating wire that is grounded; and also includes a constant current source, which is electrically connected to the output end.

[0011] The programmable microphone control method described in the present invention, wherein the output control circuit also includes a first voltage-dividing resistor and a second voltage-dividing resistor electrically connected to each other, an end of the first voltage-dividing resistor away from the electrical connection with the second voltage-dividing resistor is electrically connected to an end of the heating wire that is grounded, and an end of the second voltage-dividing resistor away from the electrical connection with the first voltage-dividing resistor is electrically connected to the output end; an end of the first voltage-dividing resistor electrically connected to the second voltage-dividing resistor is electrically connected to the MCU.

[0012] The programmable microphone control method of the present invention, wherein in the first step, the user demand is a constant voltage output request;

[0013] The calculation method in the second step is as follows:

[0014] The MCU calculates the PWM value based on the user's required voltage Vop1 and the voltage 1 / 4Vout fed back from the output end. The calculation formula is: PWM1=Vop1 / Vout. The MCU outputs the corresponding PWM waveform according to the PWM value to control the on and off of the MOS tube, so that the average voltage at the output end is equal to the required voltage Vop1.

[0015] The programmable microphone control method of the present invention, wherein in the first step, the user demand is a constant effective output request;

[0016] The calculation method in the second step is as follows:

[0017] The MCU calculates the PWM value based on the user's required voltage Vop2 and the voltage 1 / 4Vout fed back from the output end. The calculation formula is: PWM2=Vop2^2 / Vout^2. The MCU outputs the corresponding PWM waveform according to the PWM value to control the on and off of the MOS tube, so that the effective voltage of the output end Vout is equal to the required voltage Vop2.

[0018] The programmable microphone control method of the present invention, wherein in the first step, the user demand is a constant power output request;

[0019] The calculation method in the second step is as follows:

[0020] a. When the MOS tube is in the cut-off state, the constant current source outputs 0.1A current, and the MCU reads the output voltage Vout to calculate the resistance of the heating wire, R=Vout / 0.1A.

[0021] b. MCU calculates the PWM value according to the user's required power Pop and the voltage 1 / 4Vout fed back from the output end. The calculation formula is: PWM3 = Pop / (Vout^2 / R). MCU outputs the corresponding PWM waveform according to the PWM value to control the on and off of the MOS tube, so that the output power of the output end is equal to the required power Pop.

[0022] A programmable microphone control circuit is used to implement the programmable microphone control method as described above, wherein the circuit comprises an MCU and an output control circuit, wherein the output control circuit comprises a MOS tube and a heating wire; the G pole of the MOS tube is electrically connected to the MCU, the D pole of the MOS tube is electrically connected to the power supply end of the output control circuit, and the S pole of the MOS tube is electrically connected to the output end of the output control circuit; one end of the heating wire is electrically connected to the output end, and the other end is grounded; the MCU is electrically connected to one end of the heating wire that is grounded; the programmable microphone control circuit also comprises a constant current source, and the constant current source is electrically connected to the output end.

[0023] The programmable microphone control method described in the present invention, wherein the programmable microphone control circuit also includes a first voltage-dividing resistor and a second voltage-dividing resistor that are electrically connected to each other, wherein one end of the first voltage-dividing resistor that is away from being electrically connected to the second voltage-dividing resistor is electrically connected to one end of the heating wire that is grounded, and one end of the second voltage-dividing resistor that is away from being electrically connected to the first voltage-dividing resistor is electrically connected to the output end; and one end of the first voltage-dividing resistor that is electrically connected to the second voltage-dividing resistor is electrically connected to the MCU.

[0024] A microphone, wherein the microphone body, such as the MCU and / or the output control circuit of the above-mentioned programmable microphone control circuit, is integrated on the microphone body, and the microphone body is electrically connected to the MCU.

[0025] An electronic cigarette, wherein the electronic cigarette is provided with the microphone as described above.

[0026] The beneficial effect of the present invention is that: by applying the method of the present application, the output of the microphone can be adjusted accordingly according to the user's constant voltage / constant effective power / constant power output request, which can greatly improve the applicability of the microphone. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0028] Figure 1 This is a flow chart of a programmable microphone control method according to a preferred embodiment of the present invention;

[0029] Figure 2 It is a circuit diagram of a programmable microphone control circuit according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0031] The programmable microphone control method of the preferred embodiment of the present invention is as follows: Figure 1 As shown, the implementation method is as follows:

[0032] S01: The MCU connected to the microphone receives the constant voltage / constant effective / constant power output request required by the user;

[0033] S02: Calculate the PWM value to be output according to the required value corresponding to the output request input by the user and the feedback value of the output control circuit;

[0034] S03: When the microphone is triggered, the MCU controls the output of the output control circuit according to the calculated PWM value;

[0035] By using the method of the present application, the output of the microphone can be adjusted accordingly according to the user's constant voltage / constant effective / constant power output request, which can greatly improve the applicability of the microphone.

[0036] The connection relationship between the microphone and the MCU can be an electrical connection or a communication connection. Of course, the electrical connection is preferably used. In the third step, the output can be a direct output of the microphone or an indirect output of the microphone (the output end is also equipped with other circuits or components).

[0037] Preferably, see Figure 2 The output control circuit includes a MOS tube Q1 and a heating wire R; the G pole of the MOS tube Q1 is electrically connected to the MCU, the D pole of the MOS tube Q1 is electrically connected to the power supply terminal VDD of the output control circuit, and the S pole of the MOS tube Q1 is electrically connected to the output terminal Vout of the output control circuit; one end of the heating wire R is electrically connected to the output terminal Vout, and the other end is grounded; the MCU is electrically connected to the grounded end of the heating wire R; and also includes a constant current source, which is electrically connected to the output terminal.

[0038] Preferably, the output control circuit also includes a first voltage-dividing resistor R1 and a second voltage-dividing resistor R2 that are electrically connected to each other, an end of the first voltage-dividing resistor R1 that is away from the electrical connection with the second voltage-dividing resistor R2 is electrically connected to an end of the heating wire R that is grounded, and an end of the second voltage-dividing resistor R2 that is away from the electrical connection with the first voltage-dividing resistor R1 is electrically connected to the output end Vout; an end of the first voltage-dividing resistor R1 that is electrically connected to the second voltage-dividing resistor R2 is electrically connected to the MCU.

[0039] Preferably, in the first step, the user demand is a constant voltage (average voltage) output request;

[0040] The calculation method in the second step is as follows:

[0041] The MCU calculates the PWM value based on the user's required voltage Vop1 and the voltage 1 / 4Vout fed back from the output end. The calculation formula is: PWM1=Vop1 / Vout. The MCU outputs the corresponding PWM waveform according to the PWM value to control the on and off of the MOS tube, so that the average voltage at the output end is equal to the required voltage Vop1.

[0042] Preferably, in the first step, the user demand is a constant effective (constant root mean square voltage) output request;

[0043] The calculation method in the second step is as follows:

[0044] The MCU calculates the PWM value based on the user's required voltage Vop2 and the voltage 1 / 4Vout fed back from the output end. The calculation formula is: PWM2=Vop2^2 / Vout^2. The MCU outputs the corresponding PWM waveform according to the PWM value to control the on and off of the MOS tube, so that the effective voltage of the output end Vout is equal to the required voltage Vop2.

[0045] Preferably, in the first step, the user demand is a constant power output request;

[0046] The calculation method in the second step is as follows:

[0047] a. When the MOS tube is in the cut-off state, the constant current source outputs 0.1A current, and the MCU reads the output voltage Vout to calculate the resistance of the heating wire, R=Vout / 0.1A.

[0048] b. MCU calculates the PWM value according to the user's required power Pop and the voltage 1 / 4Vout fed back from the output end. The calculation formula is: PWM3 = Pop / (Vout^2 / R). MCU outputs the corresponding PWM waveform according to the PWM value to control the on and off of the MOS tube, so that the output power of the output end is equal to the required power Pop;

[0049] It should be noted that there may be other calculation methods when performing calculations, and are not limited to the above formulas. Conventional replacements based on this principle also fall within the scope of protection of this application.

[0050] A programmable microphone control circuit is used to implement the programmable microphone control method as mentioned above, as shown in FIG2, comprising an MCU and an output control circuit, the output control circuit comprising a MOS tube Q1 and a heating wire R; the G pole of the MOS tube Q1 is electrically connected to the MCU, the D pole of the MOS tube Q1 is electrically connected to the power supply terminal VDD of the output control circuit, and the S pole of the MOS tube Q1 is electrically connected to the output terminal Vout of the output control circuit; one end of the heating wire R is electrically connected to the output terminal Vout, and the other end is grounded; the MCU is electrically connected to one end of the heating wire R that is grounded; the programmable microphone control circuit also comprises a constant current source, which is electrically connected to the output terminal.

[0051] In a preferred embodiment, the MCU can be an 8-bit OTP microcontroller with a 12-bit ADC. Of course, a microcontroller with better performance can also be used, which is not limited here;

[0052] Preferably, the programmable microphone control circuit also includes a constant current source, which is electrically connected to the output terminal Vout; the programmable microphone control circuit also includes a first voltage-dividing resistor R1 and a second voltage-dividing resistor R2 that are electrically connected to each other, an end of the first voltage-dividing resistor R1 that is away from the electrical connection with the second voltage-dividing resistor R2 is electrically connected to an end of the heating wire R that is grounded, and an end of the second voltage-dividing resistor R2 that is away from the electrical connection with the first voltage-dividing resistor R1 is electrically connected to the output terminal Vout; an end of the first voltage-dividing resistor R1 that is electrically connected to the second voltage-dividing resistor R2 is electrically connected to the MCU, and the voltage-dividing resistors can be set according to actual needs.

[0053] A microphone, wherein a microphone body, such as an MCU and / or an output control circuit of the above-mentioned programmable microphone control circuit, is integrated on the microphone body, and the microphone body is electrically connected to the MCU;

[0054] The applicability of the existing microphone body can be greatly improved, the functions are more abundant, and the microphone body can be integrated into one body to simplify assembly.

[0055] An electronic cigarette, wherein the electronic cigarette is provided with the microphone as described above.

[0056] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A programmable microphone control method, characterized in that: Here’s how to do it: Step 1: The MCU connected to the microphone receives the user's request for constant voltage / constant effective / constant power output; Step 2: Calculate the PWM value to be output based on the required value corresponding to the output request input by the user and the feedback value of the output control circuit; Step 3: When the microphone is triggered, the MCU controls the output control circuit according to the calculated PWM value; The output control circuit comprises a MOS tube and a heating wire; the G pole of the MOS tube is electrically connected to the MCU, the D pole of the MOS tube is electrically connected to the power supply end of the output control circuit, and the S pole of the MOS tube is electrically connected to the output end of the output control circuit; one end of the heating wire is electrically connected to the output end, and the other end is grounded; the MCU is electrically connected to the grounded end of the heating wire; and also comprises a constant current source, which is electrically connected to the output end; If in the first step, the user demand is a constant voltage output request; The calculation method in the second step is as follows: MCU calculates the PWM value according to the user's required voltage Vop1 and the voltage 1 / 4Vout fed back from the output end. The calculation formula is: PWM1=Vop1 / Vout. MCU outputs the corresponding PWM waveform according to the PWM value to control the on and off of the MOS tube, so that the average voltage at the output end is equal to the required voltage Vop1. If in the first step, the user demand is a constant valid output request; The calculation method in the second step is as follows: The MCU calculates the PWM value based on the user's required voltage Vop2 and the voltage 1 / 4Vout fed back from the output end. The calculation formula is: PWM2=Vop2^2 / Vout^2. The MCU outputs the corresponding PWM waveform according to the PWM value to control the on and off of the MOS tube, so that the effective voltage of the output end Vout is equal to the required voltage Vop2; If in the first step, the user demand is a constant power output request; The calculation method in the second step is as follows: a. When the MOS tube is in the cut-off state, the constant current source outputs 0.1A current, and the MCU reads the output voltage Vout to calculate the resistance of the heating wire, R=Vout / 0.1A; b. MCU calculates the PWM value based on the user's required power Pop and the voltage 1 / 4Vout fed back from the output end. The calculation formula is: PWM3=Pop / (Vout^2 / R). MCU outputs the corresponding PWM waveform according to the PWM value to control the on and off of the MOS tube, so that the output power of the output end is equal to the required power Pop.

2. The programmable microphone control method according to claim 1, characterized in that: The output control circuit also includes a first voltage-dividing resistor and a second voltage-dividing resistor electrically connected to each other, wherein one end of the first voltage-dividing resistor that is away from the one electrically connected to the second voltage-dividing resistor is electrically connected to an end of the heating wire that is grounded, and one end of the second voltage-dividing resistor that is away from the one electrically connected to the first voltage-dividing resistor is electrically connected to the output end; and one end of the first voltage-dividing resistor that is electrically connected to the second voltage-dividing resistor is electrically connected to the MCU.

3. A programmable microphone control circuit, used to implement the programmable microphone control method according to any one of claims 1-2, characterized in that: It includes an MCU and an output control circuit, the output control circuit includes a MOS tube and a heating wire; the G pole of the MOS tube is electrically connected to the MCU, the D pole of the MOS tube is electrically connected to the power supply end of the output control circuit, and the S pole of the MOS tube is electrically connected to the output end of the output control circuit; one end of the heating wire is electrically connected to the output end, and the other end is grounded; the MCU is electrically connected to one end of the heating wire that is grounded; the programmable microphone control circuit also includes a constant current source, and the constant current source is electrically connected to the output end.

4. The programmable microphone control circuit according to claim 3, characterized in that: The programmable microphone control circuit also includes a first voltage-dividing resistor and a second voltage-dividing resistor electrically connected to each other, wherein one end of the first voltage-dividing resistor that is away from the electrical connection with the second voltage-dividing resistor is electrically connected to an end of the heating wire that is grounded, and one end of the second voltage-dividing resistor that is away from the electrical connection with the first voltage-dividing resistor is electrically connected to the output end; and one end of the first voltage-dividing resistor that is electrically connected to the second voltage-dividing resistor is electrically connected to the MCU.

5. A microphone, characterized in that: It comprises a microphone body, the MCU and the output control circuit of the programmable microphone control circuit as claimed in claim 3 or 4 are integrated on the microphone body, and the microphone body is electrically connected to the MCU.

6. An electronic cigarette, characterized in that: The electronic cigarette is provided with the microphone as claimed in claim 5.

Images