Microprogrammed control unit (MCU) single-line control digital screen circuit and electronic atomizer

Abstract

The utility model provides an MCU single-line control digital screen circuit, the MCU single-line control digital screen circuit comprises a main control module, a digital display module and a charging module, the main control module comprises a forward air inlet sensor and a main control chip, and the digital display module is used for receiving an output signal of the main control chip to display information. The charging module is used for supplying power to the main control module and the digital display module, and the first data communication end of the main control chip is connected with the second data communication end of the digital display module. As the data interaction between the main control chip and the digital display module is carried out by adopting the single-line serial synchronous communication protocol, compared with the traditional multi-pin connection mode, the MCU single-line control digital screen circuit has the advantages that the use of data lines is reduced, the production cost is reduced, the circuit structure is simplified, the circuit failure rate is effectively reduced, and the product quality is improved. Therefore, the stability of the MCU single-line control digital screen circuit is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic atomizers, and in particular to an MCU single-line controlled digital screen circuit and an electronic atomizer. Background Art

[0002] With the rapid development of electronic vaporizer technology, digital screen display has become a key feature of mainstream electronic vaporizer products on the market. While existing electronic vaporizer technology has achieved significant improvements in battery performance, traditional electronic vaporizer digital screen drivers typically require multiple pin connections. This not only increases soldering complexity and costs during production, but also potentially increases the failure rate of the electronic vaporizer due to the large number of chip pins.

[0003] For example, reference document CN201420735349.5 discloses an electronic cigarette with a digital display. The electronic cigarette includes an atomizer, a battery connected to the atomizer, and a PCB mounted within the cavity of the battery. The PCB includes an MCU processor, a boost circuit, a reverse battery protection circuit, and a push-button switch. The PCB also includes a digital display. The MCU processor is connected to the boost circuit and the push-button switch, the boost circuit is electrically connected to the battery, and the battery is electrically connected to the reverse battery protection circuit. The digital display circuit has 11 pins, each of which is electrically connected to corresponding pins on the MCU processor circuit. The digital display has three display values. The communication process involves the digital display being connected to the MCU processor via the 11 pins, which are electrically connected to corresponding pins on the MCU processor circuit. The digital display has three display values, which can display information such as the current atomizer output port resistance, battery voltage, battery output voltage, and battery output power. This information is processed by the MCU processor and then sent to the digital display for display. However, this solution has a high number of chip pins, which can increase the failure rate of the electronic atomizer and increase manufacturing costs. Utility Model Content

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an MCU single-line controlled digital screen circuit and an electronic atomizer with fewer data lines.

[0005] The purpose of this disclosure is achieved through the following technical solutions:

[0006] An MCU single-line controlled digital screen circuit comprises a main control module, a digital display module and a charging module. The main control module comprises a forward air intake sensor and a main control chip.

[0007] The digital display module is used to receive the output signal of the main control chip to display required information.

[0008] The charging module is used to provide power to the main control module and the digital display module.

[0009] The airflow sensing end of the forward air intake sensor is connected to the air intake signal receiving end of the main control chip, the charging signal output end of the charging module is connected to the charging signal receiving end of the main control chip, and the first data communication end of the main control chip is connected to the second data communication end of the digital display module.

[0010] In one embodiment, the main control module also includes a heating element control circuit, which includes a first electronic switch tube and a first resistor. The first end of the first electronic switch tube is respectively connected to the first end of the first resistor and the battery power supply end, the control end of the first electronic switch tube is respectively connected to the switch signal receiving end of the heating element control circuit and the second end of the first resistor, and the second end of the first electronic switch tube is used to connect to the heating element.

[0011] In one embodiment, the main control module further includes a second resistor, a first end of the second resistor is used to be connected to the battery power supply end, and a second end of the second resistor is connected to the input end of the forward air intake sensor.

[0012] In one embodiment, the main control module further includes a third resistor, a first end of the third resistor is used to be connected to the battery power supply end, and a second end of the third resistor is connected to the first data communication end of the main control chip.

[0013] In one embodiment, the main control module further includes a fourth resistor, a first end of the fourth resistor is used to be connected to the battery power supply end, and a second end of the fourth resistor is connected to the power input end of the main control chip.

[0014] In one embodiment, the charging module further includes a fifth resistor, a first end of the fifth resistor is connected to the programming control end of the charging module, and a second end of the fifth resistor is grounded.

[0015] In one embodiment, the charging module further includes a first capacitor, a first end of the first capacitor is used to be connected to the battery power supply end, and a second end of the first capacitor is grounded.

[0016] In one embodiment, the digital display module includes a digital signal control chip and a sixth resistor, the first end of the sixth resistor is used to connect to the battery power supply end, the second end of the sixth resistor is connected to the power input end of the digital signal control chip, and the second data communication end of the digital signal control chip is connected to the first data communication end of the main control chip.

[0017] In one embodiment, the digital display module further includes a second capacitor, a first end of the second capacitor is connected to the second end of the sixth resistor, and a second end of the second capacitor is grounded.

[0018] An electronic atomizer comprises the MCU single-line controlled digital screen circuit as described in any one of the above items.

[0019] Compared with the prior art, the present disclosure has at least the following advantages:

[0020] 1. The above-mentioned MCU single-line control digital screen circuit uses a single-line bidirectional communication data line for data exchange between the main control chip and the digital display module. Compared with the traditional multi-pin connection communication method between the main control chip and the digital display module, it reduces the data lines required to connect the main control chip and the digital display module, making the production cost of the MCU single-line control digital screen circuit lower, and the structure of the MCU single-line control digital screen circuit is simple, which reduces the probability of circuit failure, thereby improving the stability of the MCU single-line control digital screen circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a circuit diagram of an MCU single-line control digital screen circuit according to one embodiment;

[0023] Figure 2 for Figure 1 The circuit diagram of the main control module shown;

[0024] Figure 3 for Figure 1 The circuit diagram of the digital display module shown;

[0025] Figure 4 for Figure 1 The circuit diagram of the charging module is shown. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0030] like Figures 1 to 4 As shown, the MCU single-line controlled digital screen circuit 10 of an embodiment of the present disclosure includes a main control module 100, a digital display module 200 and a charging module 300. The main control module 100 includes a forward air intake sensor J2 and a main control chip U1.

[0031] The digital display module 200 is used to receive the output signal of the main control chip to display the required information.

[0032] The charging module 300 is used to provide power to the main control module and the digital display module.

[0033] The airflow sensing terminal KEY1 of the forward air intake sensor J2 is connected to the air intake signal receiving terminal KEY of the main control chip U1, the charging signal output terminal CHAR1 of the charging module 300 is connected to the charging signal receiving terminal CHAR of the main control chip, and the first data communication terminal SDA of the main control chip is connected to the second data communication terminal SDA1 of the digital display module.

[0034] In this embodiment, when the forward air intake sensor J2 detects a forward airflow signal, the airflow sensing terminal KEY1 of the forward air intake sensor J2 will output a signal to the air intake signal receiving terminal KEY of the main control chip U1. Then, the first data communication terminal SDA of the main control chip U1 sends the instruction data to the second data communication terminal SDA1 of the digital display module 200. Then, the digital display module 200 displays the corresponding content according to the received instruction data. When the charging module 300 is connected to an external power supply, the charging signal output terminal CHAR1 of the charging module 300 outputs a signal to the charging signal receiving terminal CHAR of the main control chip. Afterwards, the first data communication terminal SDA of the main control chip U1 sends the command data to the second data communication terminal SDA1 of the digital display module 200, and then the digital display module 200 displays the power-related information according to the received command data; since the first data communication terminal SDA and the second data communication terminal SDA1 are data lines that can be transmitted in both directions, they allow data to be sent from the main control chip U1 to the digital display module 200, and also from the digital display module 200 to the main control chip U1, so the digital display module 200 can transmit the received data back to the main control chip U1, thereby completing a complete data interaction.

[0035] The above-mentioned MCU single-line control digital screen circuit 10 uses a single-line bidirectional communication data line for data exchange between the main control chip U1 and the digital display module 200. Compared with the traditional multi-pin connection communication method between the main control chip U1 and the digital display module 200, the data lines required for the main control chip U1 and the digital display module 200 are reduced, making the production cost of the MCU single-line control digital screen circuit 10 lower, and the structure of the MCU single-line control digital screen circuit 10 is simple, which reduces the probability of circuit failure, thereby improving the stability of the MCU single-line control digital screen circuit 10.

[0036] like Figure 2As shown, in one embodiment, the main control module 100 also includes a heating element control circuit, which includes a first electronic switch tube Q1 and a first resistor R6. The first end of the first electronic switch tube Q1 is respectively connected to the first end of the first resistor R6 and the battery power supply end, and the control end of the first electronic switch tube Q1 is respectively connected to the switch signal receiving end Switch1 of the heating element control circuit and the second end of the first resistor R6. The second end of the first electronic switch tube Q1 is used to connect to the heating element. In this embodiment, when the switch signal end Switch of the main control chip U1 outputs a high-level signal to the switch signal receiving end Switch1 of the heating element control circuit, since the switch signal receiving end Switch1 of the heating element control circuit is connected to the control end of the first electronic switch tube Q1, the voltage at the control end of the first electronic switch tube Q1 is greater than its threshold voltage, thereby turning on the first electronic switch tube Q1, and then current flows from the first electronic switch tube Q1 into the heating element, thereby causing the heating element to generate heat and heat the tobacco oil material in the electronic atomizer. In addition, since the first resistor R6 is arranged between the first terminal and the control terminal of the first electronic switch tube Q1, the first resistor R6 plays a role of voltage division, thereby reducing the voltage of the control terminal of the first electronic switch tube Q1, thereby protecting the first electronic switch tube Q1 from being damaged by excessively high voltage.

[0037] like Figure 2 As shown, in one embodiment, the main control module 100 further includes a second resistor R9, a first end of which is connected to the battery power supply terminal, and a second end of which is connected to the input terminal of the forward air intake sensor J2. In this embodiment, since the two ends of the second resistor R9 are respectively connected in series between the battery power supply terminal and the forward air intake sensor J2, and the current flowing through each component in the series circuit is equal, according to Ohm's law, the voltage across each component in the circuit is proportional to its resistance value. Therefore, the second resistor R9 acts as a voltage divider and current limiter in the circuit, preventing excessive input current from the battery power supply terminal from causing damage to the forward air intake sensor J2, thereby ensuring the normal operation of the forward air intake sensor J2.

[0038] like Figure 2As shown, in one embodiment, the main control module 100 further includes a third resistor R10, a first end of the third resistor R10 being connected to the battery power supply terminal, and a second end of the third resistor R10 being connected to the first data communication terminal SDA of the main control chip U1. In this embodiment, during the data transmission process, since the data bit on the first data communication terminal SDA of the main control chip U1 needs to be in a stable high-level state to be received by the digital display module 200, and the first end of the third resistor R10 is connected to the battery power supply terminal, the first data communication terminal SDA of the main control chip U1 connected to the second end of the third resistor R10 receives a high-level signal, thereby ensuring that when the digital display module 200 does not receive a signal from the first data communication terminal SDA, it can remain in a high-level state, thereby improving signal stability.

[0039] like Figure 2 As shown, in one embodiment, the main control module 100 further includes a fourth resistor R8, a first end of the fourth resistor R8 being used to connect to the battery power supply terminal, and a second end of the fourth resistor R8 being connected to the power input terminal of the main control chip U1. In this embodiment, since the two ends of the fourth resistor R8 are respectively connected in series between the battery power supply terminal and the power input terminal of the main control chip U1, and the current flowing through each component in the series circuit is equal, according to Ohm's law, the voltage across each component in the circuit is proportional to its resistance value. Therefore, the fourth resistor R8 plays a role of voltage division and current limiting in the circuit, avoiding the problem of excessive input current at the battery power supply terminal causing damage to the main control chip U1, thereby ensuring that the main control chip U1 can operate normally.

[0040] like Figure 4 As shown, in one embodiment, the charging module 300 further includes a fifth resistor R3, a first end of the fifth resistor R3 being connected to the programming control terminal of the charging module 300, and a second end of the fifth resistor R3 being grounded. In this embodiment, since the programming control terminal of the charging module 300 is responsible for setting and monitoring the charging current and, in some cases, for shutting down the charging module 300, the programming control terminal of the charging module 300 needs to form a current loop between the fifth resistor R3 and the ground terminal to set the charging current of the charging module 300. By adjusting the resistance value of the fifth resistor R3, the required charging current can be flexibly set to meet the needs of different batteries or application scenarios. This improves the flexibility of the charging module 300.

[0041] like Figure 4As shown, in one embodiment, the charging module 300 further includes a first capacitor C2, a first end of which is connected to the battery power supply terminal, and a second end of the first capacitor C2 is grounded. In this embodiment, because the capacitor has the ability to store electrical energy, it can provide instantaneous power support to the circuit when the battery power supply terminal is disconnected or the load changes. At the same time, the first capacitor C2 acts as a filter to filter out high-frequency noise and fluctuations in the circuit, thereby making the voltage input to the battery power supply terminal more stable, thereby improving the stability of the charging module 300.

[0042] like Figure 3 As shown, in one embodiment, the digital display module 200 includes a digital signal control chip U3 and a sixth resistor R7. The first end of the sixth resistor R7 is used to connect to the battery power supply terminal, the second end of the sixth resistor R7 is connected to the power input terminal of the digital signal control chip U3, and the second data communication terminal of the digital signal control chip is connected to the first data communication terminal of the main control chip. In this embodiment, since the two ends of the sixth resistor R7 are respectively connected in series between the battery power supply terminal and the power input terminal of the digital signal control chip U3, and the current flowing through each component in the series circuit is equal, according to Ohm's law, when the current is constant, the voltage across each component in the circuit is proportional to its resistance value. The sixth resistor R7 and the digital signal control chip U3 share the voltage of the battery power supply terminal, thereby limiting the current flowing through the digital signal control chip U3, avoiding the problem of excessive input current at the battery power supply terminal causing damage to the digital signal control chip U3, and thus ensuring the normal operation of the digital signal control chip U3.

[0043] like Figure 3 As shown, in one embodiment, the digital display module 200 further includes a second capacitor C3, a first end of the second capacitor C3 being connected to the second end of the sixth resistor R7, and a second end of the second capacitor C3 being grounded. In this embodiment, because the capacitor has the ability to store electrical energy, it can provide instantaneous electrical energy support to the circuit when the battery power supply terminal is disconnected or the load changes. At the same time, the second capacitor C3 acts as a filter to filter out high-frequency noise and fluctuations in the circuit, thereby making the input voltage more stable, thereby improving the stability of the digital display module 200.

[0044] An electronic atomizer includes any one of the above-mentioned MCU single-line control digital screen circuits 10. In this embodiment, when the forward air intake sensor J2 detects a forward airflow signal, the airflow sensing terminal KEY1 of the forward air intake sensor J2 will output a signal to the air intake signal receiving terminal KEY of the main control chip U1, and then the first data communication terminal SDA of the main control chip U1 will send the instruction data to the second data communication terminal SDA1 of the digital display module 200, and then the digital display module 200 will display the corresponding content according to the received instruction data; when the charging module 300 is connected to an external power supply, the charging signal output terminal CHAR1 of the charging module 300 will output a signal to the charging signal receiving terminal CHAR of the main control chip, and then Afterwards, the first data communication terminal SDA of the main control chip U1 sends the command data to the second data communication terminal SDA1 of the digital display module 200, and then the digital display module 200 displays the power-related information according to the received command data. Since the first data communication terminal SDA and the second data communication terminal SDA1 are data lines that can be transmitted in both directions, they allow data to be sent from the main control chip U1 to the digital display module 200, and also from the digital display module 200 to the main control chip U1. Therefore, the digital display module 200 can transmit the received data back to the main control chip U1, thereby completing a complete data interaction.

[0045] Compared with the prior art, the present disclosure has at least the following advantages:

[0046] 1. The above-mentioned MCU single-line control digital screen circuit 10 uses a single-line bidirectional communication data line for data exchange between the main control chip U1 and the digital display module 200. Compared with the traditional multi-pin connection communication method between the main control chip U1 and the digital display module 200, the data lines required for the main control chip U1 and the digital display module 200 to be connected to each other are reduced, making the production cost of the MCU single-line control digital screen circuit 10 lower, and the structure of the MCU single-line control digital screen circuit 10 is simple, which reduces the probability of circuit failure, thereby improving the stability of the MCU single-line control digital screen circuit 10.

[0047] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the disclosed patent shall be determined by the appended claims.

Claims

1. An MCU single-line control digital screen circuit, characterized in that: It includes a main control module, a digital display module and a charging module. The main control module includes a forward air intake sensor and a main control chip. The digital display module is used to receive the output signal of the main control chip to display the required information; The charging module is used to provide power to the main control module and the digital display module; The airflow sensing end of the forward air intake sensor is connected to the air intake signal receiving end of the main control chip, the charging signal output end of the charging module is connected to the charging signal receiving end of the main control chip, and the first data communication end of the main control chip is connected to the second data communication end of the digital display module.

2. The MCU single-line control digital screen circuit according to claim 1 is characterized in that: The main control module also includes a heating element control circuit, which includes a first electronic switch tube and a first resistor. The first end of the first electronic switch tube is respectively connected to the first end of the first resistor and the battery power supply end, and the control end of the first electronic switch tube is respectively connected to the switch signal receiving end of the heating element control circuit and the second end of the first resistor. The second end of the first electronic switch tube is used to connect to the heating element.

3. The MCU single-line control digital screen circuit according to claim 1 is characterized in that: The main control module further includes a second resistor, a first end of the second resistor is used to be connected to the battery power supply end, and a second end of the second resistor is connected to the input end of the forward air intake sensor.

4. The MCU single-line control digital screen circuit according to claim 3 is characterized in that: The main control module further includes a third resistor, a first end of the third resistor is used to be connected to the battery power supply end, and a second end of the third resistor is connected to the first data communication end of the main control chip.

5. The MCU single-line control digital screen circuit according to claim 3 is characterized in that: The main control module further includes a fourth resistor, a first end of the fourth resistor is used to be connected to the battery power supply end, and a second end of the fourth resistor is connected to the power input end of the main control chip.

6. The MCU single-line control digital screen circuit according to claim 1, characterized in that: The charging module further includes a fifth resistor, a first end of the fifth resistor is connected to the programming control end of the charging module, and a second end of the fifth resistor is grounded.

7. The MCU single-line control digital screen circuit according to claim 6, characterized in that: The charging module further includes a first capacitor, a first end of the first capacitor is used to be connected to the battery power supply end, and a second end of the first capacitor is grounded.

8. The MCU single-line control digital screen circuit according to claim 1, characterized in that: The digital display module includes a digital signal control chip and a sixth resistor, the first end of the sixth resistor is used to connect to the battery power supply end, the second end of the sixth resistor is connected to the power input end of the digital signal control chip, and the second data communication end of the digital signal control chip is connected to the first data communication end of the main control chip.

9. The MCU single-line control digital screen circuit according to claim 8, characterized in that: The digital display module further includes a second capacitor, a first end of the second capacitor is connected to the second end of the sixth resistor, and a second end of the second capacitor is grounded.

10. An electronic atomizer, characterized in that: The invention comprises the MCU single-line controlled digital screen circuit as described in any one of claims 1 to 9.

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