CN114831357A - Parameter self-learning electronic cigarette circuit and method for solving abnormity of electronic cigarette - Google Patents

Abstract

The invention discloses an electronic cigarette microphone head with a parameter self-learning circuit and a method for solving the abnormality of the electronic cigarette microphone head, and relates to the technical field of electronic cigarette microphone heads. The parameter self-learning electronic cigarette circuit includes a capacitance microphone head, a capacitance detection circuit, a smoking action Identification circuit, microphone parameter self-learning circuit, heating wire and alarm control circuit and heating wire. The method of the present invention can meet the requirements of novel blowing type atomization and inhalation type atomization, and at the same time avoids the problem that the smoking action will be continuously triggered after the electronic cigarette leaks oil, and also avoids the problem that the smoking action will be triggered under the atmospheric field strength. When changes occur, the problem of smoking action will be continuously triggered, thereby greatly reducing the existence of abnormal reactions of the electronic cigarette head.

Description

A parameter self-learning electronic cigarette circuit and method for solving the abnormality of electronic cigarette

technical field

The invention relates to the technical field of electronic cigarettes, in particular to a parameter self-learning electronic cigarette circuit and a method for solving the abnormality of electronic cigarettes.

Background technique

There is a capacitive microphone inside the electronic cigarette. The conductive film inside the microphone and the substrate connected to the ground form a capacitor whose size changes with the flow direction of the airflow. The conductive film is very thin, and slight changes in airflow will cause fluctuations in the capacitance. ; The current electronic cigarette microphone head control chip, on the basis of the capacitance reference value, uses the capacitance value to increase and exceeds a certain threshold to determine whether it is a smoking action, and at the same time continuously detects the capacitance value to track the change of the capacitance value. After a certain time and a certain threshold, the reference value of the capacitor is reset, but the existing solutions have the following problems:

1. It can not meet the demand of novel blowing atomization, but can only meet the demand of inhalation atomization;

2. After the e-cigarette leaks oil, the e-liquid intrudes between the substrate and the capacitor film, resulting in a continuous and unstable change in the capacitance value. There are various situations such as increasing/decreasing/jittering, which will continuously trigger the electronic cigarette. Do not smoke;

3. When the atmospheric field strength changes, the air pressure at both ends of the capacitor film changes, which also causes the capacitor film to vibrate, causing misjudgment of the microphone head and automatically triggering the smoking action.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a parameter self-learning electronic cigarette circuit and a method for solving the abnormality of the electronic cigarette, so as to solve the problems raised in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: a parameter self-learning electronic cigarette circuit, including a capacitor microphone head, a capacitance detection circuit, a smoking action recognition circuit, a microphone head parameter self-learning circuit, a heating wire and an alarm control circuit and a heating circuit. The output end of the capacitor microphone is connected with a microphone capacity value detection circuit, and the output end of the capacitance detection circuit is provided with a smoking action recognition circuit and a microphone parameter self-learning circuit. The signal output end is connected with the smoking action identification circuit, the heating wire and the alarm control circuit, the signal output end of the smoking action identification circuit is connected with the heating wire and the alarm control circuit, and the output end of the heating wire and the alarm control circuit is connected with the heating wire .

Preferably, an LED light is connected to the output end of the heating wire and the alarm control circuit.

A method for solving the abnormality of electronic cigarette microphone head through parameter self-learning, comprising the following steps:

1) Self-learning of the correct airflow direction parameters: After the electronic cigarette is powered on, the control chip detects the capacitance value through the capacitance detection circuit; obtains the initial capacitance value, and uses this capacitance value as the benchmark, and the change of ±5% is the threshold; Change the capacitance of the threshold, and determine whether the capacitance change caused by the normal airflow direction is an increasing direction or a decreasing direction; and record the learning result as the reference airflow direction.

2) Self-learning of the correct airflow size parameters: For the first 30 times of e-cigarette smoking, collect the change size (C), duration (T), and rate of change of the capacity value (S) each time; record the maximum change in the capacity value within 30 times (Cmax), the maximum value of the duration within 30 times (Tmax), and calculate the rate of change of the capacitance value in real time and record the maximum and minimum values: the maximum value of the rate of change of the capacitance value (Smax), the minimum value of the rate of change of the capacitance value (Smin ),.

3) Set the parameter threshold: set the lower threshold of the capacitance change rate, the upper threshold of the capacitance change rate, the upper threshold of the capacitance change and the upper threshold of the duration.

4) Responding to abnormal situations and self-learning: According to the airflow direction and airflow size obtained in steps 1 and 2, control the electronic cigarette to make different responses, as follows:

①Creep-type capacitance self-change discrimination and response: When the capacitance change rate is lower than the lower limit threshold of the capacitance change rate set above, the microphone will not start the subsequent smoking action, and only track the capacitance change caused by this creep in real time. , and serve as the benchmark value for smoking action judgment;

② Rapid capacity self-change discrimination and response: When the capacity change rate is higher than the upper limit threshold of the capacity change rate set above, the microphone will not start the subsequent smoking action, but only track the capacity change caused by the rapid change in real time, and as the benchmark value for smoking action judgment;

③Discrimination and response to abnormal changes of microphone capacity value: when the real-time capacity value change is greater than the upper limit value of the capacity value change, and the duration is greater than the upper limit threshold of time, the smoking action triggered by the microphone head will be stopped immediately and the subsequent smoking action will not be started; and output specific alarm information;

④Discrimination and response to abnormal airflow direction: The smoking action recognition circuit detects the airflow direction in real time. When the airflow direction is consistent with the reference airflow direction, the subsequent smoking action of the microphone can be triggered. When the airflow direction is inconsistent with the reference airflow direction, the subsequent smoking action will not be triggered. .

Preferably, the threshold in the step 3) is specifically: the lower limit threshold of the change rate of the capacitance value: Smin*0.8; the upper limit threshold of the change rate of the capacitance value: Smax*1.2; the upper limit threshold of the capacitance value change: Cmax: *1.2; the upper limit of the duration time Threshold: Tmax*1.2.

Compared with the prior art, the beneficial effects of the present invention are:

The method of the present invention can meet the requirements of novel blowing type atomization and inhalation type atomization, and at the same time avoid the problem of continuously triggering the smoking action of the electronic cigarette after the oil leakage of the electronic cigarette, and also avoid the problem of smoking in the atmosphere. When the field strength changes, the problem of smoking action will be continuously triggered, which will greatly reduce the abnormal response of the electronic cigarette head.

Description of drawings

Fig. 1 is the electronic cigarette circuit principle diagram of the present invention;

FIG. 2 is a flow chart of the abnormality of the microphone head of the electronic cigarette of the present invention.

Detailed ways

The technical solutions in 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. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

A parameter self-learning electronic cigarette circuit includes a capacitor microphone head, a capacitance detection circuit, a smoking action recognition circuit, a microphone head parameter self-learning circuit, a heating wire and an alarm control circuit and a heating wire, and the output end of the capacitor microphone head is connected with a The microphone head capacitance value detection circuit, the output end of the capacitance detection circuit is provided with a smoking action recognition circuit and a microphone head parameter self-learning circuit, and the signal output end of the microphone head parameter self-learning circuit is connected to the smoking action recognition circuit and the heating wire and the An alarm control circuit, the signal output end of the smoking action recognition circuit is connected with a heating wire and an alarm control circuit, and a heating wire is connected with the output end of the heating wire and the alarm control circuit. The capacitance detection circuit is used to detect the real-time capacitance value of the capacitance microphone, and record the change of capacitance value, as well as parameters such as duration. The smoking action recognition circuit and the microphone parameter self-learning circuit are based on the data monitored by the capacitance detection circuit. The normal smoking signal is judged, and the heating wire and the alarm control circuit start the heating wire according to the judgment result, or send an alarm signal; the output end of the heating wire and the alarm control circuit is connected with an LED light, and the LED light can be used to prompt the alarm signal.

A method for solving the abnormality of electronic cigarette microphone head through parameter self-learning, comprising the following steps:

1) Self-learning of the correct airflow direction parameters: After the electronic cigarette is powered on, the control chip detects the capacitance value through the capacitance detection circuit; obtains the initial capacitance value, and uses this capacitance value as the benchmark, and the change of ±5% is the threshold; Change the capacitance value of the threshold, and judge whether the capacitance value change caused by the normal airflow direction is an increasing direction or a decreasing direction; and record the learning result as the reference airflow direction;

2) Self-learning of the correct airflow size parameters: For the first 30 times of e-cigarette smoking, collect the volume change (C), duration (T), and volume change rate (S) each time, and record the maximum volume change within 30 times. (Cmax), the maximum value of the duration within 30 times (Tmax), and calculate the rate of change of the capacitance value in real time and record the maximum and minimum values: the maximum value of the rate of change of the capacitance value (Smax), the minimum value of the rate of change of the capacitance value (Smin );

3) Set the parameter threshold: set the lower threshold of the capacitance change rate: Smin*0.8; the upper threshold of the capacitance change rate: Smax*1.2; the upper threshold of the capacitance change: Cmax: *1.2; the upper threshold of the duration: Tmax*1.2;

4) Responding to abnormal situations and self-learning: According to the airflow direction and airflow size obtained in steps 1 and 2, control the electronic cigarette to make different responses, as follows:

①Creep-type capacitance self-change discrimination and response: When the capacitance change rate is lower than the lower limit threshold of the capacitance change rate set above, the microphone will not start the subsequent smoking action, and only track the capacitance change caused by this creep in real time. , and serve as the benchmark value for smoking action judgment;

② Rapid capacity self-change discrimination and response: When the capacity change rate is higher than the upper limit threshold of the capacity change rate set above, the microphone will not start the subsequent smoking action, but only track the capacity change caused by the rapid change in real time, and as the benchmark value for smoking action judgment;

③Discrimination and response to abnormal changes of microphone capacity value: when the real-time capacity value change is greater than the upper limit threshold of capacity value change, and the duration is greater than the upper limit threshold of time, the smoking action triggered by the microphone head will be stopped immediately and the subsequent smoking action will not be started; and output specific alarm information;

④Discrimination and response to abnormal airflow direction: The smoking action recognition circuit detects the airflow direction in real time. When the airflow direction is consistent with the reference airflow direction, the subsequent smoking action of the microphone can be triggered. When the airflow direction is inconsistent with the reference airflow direction, the subsequent smoking action will not be triggered. .

For airflow direction detection, each time the e-cigarette is powered on, the first three airflow directions are used as the reference airflow direction, and the e-cigarette is started only when it is consistent with the reference airflow direction. Can use electronic cigarettes.

When the e-liquid intrudes between the substrate and the capacitor film, resulting in a continuous and unstable change in the capacitance value; or when the atmospheric field strength changes, causing the air pressure at both ends of the capacitor film to change, the microphone head parameter self-learning circuit can identify the creeping type. Capacitance value change or rapid capacitance value change, and respond accordingly.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (4)

1. A parameter self-learning electronic cigarette circuit is characterized in that, comprising a capacitor microphone head, a capacitance detection circuit, a smoking action recognition circuit, a microphone head parameter self-learning circuit, a heating wire and an alarm control circuit and a heating wire, the capacitor microphone The output end of the head is connected with a microphone head capacity value detection circuit, the output end of the capacitance detection circuit is provided with a smoking action recognition circuit and a microphone head parameter self-learning circuit, and the signal output end of the microphone head parameter self-learning circuit is connected to the smoking action. The identification circuit, the heating wire and the alarm control circuit, the signal output end of the smoking action identification circuit is connected with the heating wire and the alarm control circuit, and the output end of the heating wire and the alarm control circuit is connected with the heating wire. 2. A parameter self-learning electronic cigarette circuit, characterized in that an LED light is connected to the output end of the heating wire and the alarm control circuit. 3. a method for solving the abnormality of electronic cigarette microphone head through parameter self-learning, is characterized in that, comprises the steps: 1) Self-learning of the correct airflow direction parameters: After the electronic cigarette is powered on, the control chip detects the capacitance value through the capacitance detection circuit; obtains the initial capacitance value, and uses this capacitance value as a reference, and the change of ±5% is the threshold; Identify the 3-time capacitance to determine whether the change of the capacitance value caused by the normal airflow direction is an increasing direction or a decreasing direction; and record the learning result as the reference airflow direction; 2) Self-learning of the correct airflow size parameters: For the first 30 times of e-cigarette smoking, collect the volume change (C), duration (T), and volume change rate (S) each time, and record the maximum volume change within 30 times. (Cmax), the maximum value of the duration within 30 times (Tmax), and calculate the rate of change of the capacitance value in real time and record the maximum and minimum values: the maximum value of the rate of change of the capacitance value (Smax), the minimum value of the rate of change of the capacitance value (Smin ); 3) Set the parameter threshold: set the lower threshold of the capacitance change rate, the upper threshold of the capacitance change rate, the upper threshold of the capacitance change and the upper threshold of the duration; 4) Distinguish and respond to abnormal situations: According to the airflow direction and airflow size obtained in steps 1 and 2, control the electronic cigarette to make different responses, as follows: ①Creep-type capacitance self-change discrimination and response: When the capacitance change rate is lower than the lower limit threshold of the capacitance change rate set above, the microphone will not start the subsequent smoking action, and only track the capacitance change caused by this creep in real time. , and serve as the benchmark value for smoking action judgment; ② Rapid capacity self-change discrimination and response: When the capacity change rate is higher than the upper limit threshold of the capacity change rate set above, the microphone will not start the subsequent smoking action, but only track the capacity change caused by the rapid change in real time, and as the benchmark value for smoking action judgment; ③Discrimination and response of abnormal microphone capacity value: When the real-time capacity value change is greater than the upper limit threshold of capacity value change, and the duration is greater than the upper limit threshold of time, the smoking action triggered by the microphone will be stopped immediately and the subsequent smoking action will not be started; and output a specific warning information; ④Discrimination and response to abnormal airflow direction: The smoking action recognition circuit detects the airflow direction in real time. When the airflow direction is consistent with the reference airflow direction, the subsequent smoking action of the microphone can be triggered. When the airflow direction is inconsistent with the reference airflow direction, the subsequent smoking action will not be triggered. . 4. The method for solving the abnormality of the microphone head of an electronic cigarette according to claim 3, wherein the threshold value in step 3) is specifically: the lower limit threshold value of the change rate of the capacitance value: Smin*0.8; the upper limit value of the change rate of the capacitance value : Smax*1.2; Capacitance change upper limit threshold: Cmax: *1.2; Duration upper limit threshold: Tmax*1.2.

Images