CHIP SYSTEM INTEGRATED WITH MCU AND ELECTROMAGNETIC DRIVING

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Application No. PCT/CN2022/140707, filed on Dec. 21, 2022, which claims priority to Chinese Patent Application No. 202111614729.4, filed on Dec. 27, 2021. The disclosures of the aforementioned applications are hereby incorporated by reference in their entireties.

TECHNICAL FIELD

The invention relates to a chip system integrated with MCU and electromagnetic driving, belonging to the field of chips.

BACKGROUND

The electromagnetic induction heated smoking appliance is an electronic product, involving functional devices such as a main controller, an electromagnetic generation circuit, and a peripheral circuit. At present, most of the electromagnetic induction heated smoking appliances use electronic components to build an electromagnetic generation circuit, and control the opening and closing of the electromagnetic generation circuit through an output end of a pin of a main controller, where a variety of devices are required, and the consistency of parameters is poor, an accurate control cannot be realized, an operating effect is poor, a preheating time is long, and an operating power consumption is high.

SUMMARY

In order to solve the shortcomings of the above-mentioned prior art, the present invention proposes a chip system integrated with MCU (Micro Controller Unit) and electromagnetic driving, so as to integrate and package MCU and electromagnetic driving function into one chip, thereby improving chip performance, reducing development difficulty, shortening development cycle, reducing the development cost of an electromagnetic induction heated smoking appliance, and optimizing the miniaturization design of the appliance product.

The present invention adopts following technical solutions in order to achieve the above-mentioned inventive object.

The present invention provides a chip system integrated with MCU and electromagnetic driving, which is characterized by including: a power management module, a signal acquisition module, a controller processing module, an electromagnetic driving module, an audio and video output module, a temperature measurement and control module, and a GPIO (General Purpose Input and Output) module;

• • the power management module includes: a voltage increasing/decreasing conversion module, a charging management module, a battery protection module, and a power output module;
  • the signal acquisition module includes: a voltage acquisition module, a current acquisition module, a temperature acquisition module, a biological signal acquisition module, and an electromagnetic driving load acquisition module;
  • the controller processing module includes: a signal processing module, a signal transmission module, and a signal communication module;
  • the electromagnetic driving module includes: an IGBT (Insulate-Gate Bipolar Transistor) driving module and a H-bridge power module;
  • the audio and video output module includes: a voice playing module, a LED (Light-Emitting Diode) module, and a LCD (Liquid Crystal Display) module;
  • the voltage increasing/decreasing conversion module receives an externally input voltage and converts the externally input voltage into a voltage required for a normal operation of the signal processing module, and then provides it to the signal processing module;
  • the signal processing module, after being powered on, sends a power control signal to the power output module, so that the power output module starts up and outputs a corresponding voltage to each module;
  • each module, after being powered on, performs a self-test operation and sends a self-test signal to the signal processing module through the signal transmission module after the self-test operation is completed;
  • according to the self-test signal of each module, the signal processing module performs an enabling operation on a module corresponding to a normal signal in the self-test signal; resets a module corresponding to a fault signal in the self-test signal, and then performs a self-test again, and reports an error on the corresponding module if a fault signal is still received;
  • after the signal acquisition module receives a periodic acquisition instruction or an external trigger signal sent by the signal processing module, the voltage acquisition module, the current acquisition module, the temperature acquisition module, and the biological signal acquisition module are used to acquire a voltage signal, a current signal, a temperature signal, and a biological signal, respectively and correspondingly, and send these signals to the signal processing module through the signal transmission module;
  • the battery protection module monitors an external energy supply element connected to the signal acquisition module, and sends a warning signal to the signal processing module when an abnormal signal is found;
  • the signal processing module stores and processes a signal uploaded by the signal acquisition module, and performs an abnormal processing on a corresponding acquisition module if the warning signal is received;
  • when the electromagnetic driving load acquisition module detects access of an external electromagnetic induction coil, the electromagnetic driving load acquisition module sends an access signal to the signal processing module;
  • the signal processing module sends an electromagnetic driving instruction to the IGBT driving module according to the access signal, so that the IGBT driving module drives an IGBT device circuit, and sends an output signal of the IGBT device circuit to the H-bridge power module; the H-bridge power module oscillates to generate an electromagnetic signal of a corresponding frequency according to the output signal and is connected to the electromagnetic induction coil;
  • when the electromagnetic driving load acquisition module detects, through an electromagnetic coupling action, that a ferromagnetic heating element is placed in the electromagnetic induction coil, the electromagnetic driving load acquisition module sends an electromagnetic load signal to the signal processing module; the signal processing module sends a driving instruction to the electromagnetic driving module according to the electromagnetic load signal and based on a set power to output an electromagnetic signal of a corresponding power to drive the ferromagnetic heating element, and at the same time sends a temperature measurement and control driving signal to the temperature measurement and control module through the signal transmission module; the temperature measurement and control module measures a temperature of the ferromagnetic heating element in real time according to a received temperature measurement and control driving signal, and transmits a temperature signal to the signal processing module through the signal transmission module, and after receiving the temperature signal, the signal processing module compares the temperature signal with a set threshold temperature and analyzes it, so as to send a temperature control signal to the electromagnetic driving module through the signal transmission module to adjust the power corresponding to the electromagnetic signal;
  • if no ferromagnetic heating element is detected, the electromagnetic driving load acquisition module sends a shutdown signal to the signal processing module through the signal transmission module, and the signal processing module transmits an electromagnetic driving shutdown instruction to the electromagnetic driving module through the signal transmission module, so that the electromagnetic driving module performs a shutdown of an electromagnetic driving function;
  • when the voice playing module, LED module, and LCD module respectively detect an access of an external component, they send an identification signal to the signal processing module, the signal processing module sends an audio and video output instruction to a corresponding module of the audio and video output module through the signal transmission module to start up, and the voice playing module receives a voice signal sent by the signal processing module and broadcasts it accordingly; the LED and LCD modules receive picture, text and video signals sent by the signal processing module and perform a corresponding output and display;
  • when the signal communication module detects a function trigger instruction, the signal communication module sends a communication request signal to the signal processing module, and the signal processing module sends a communication start instruction to the signal communication module through the signal transmission module according to a set WIFI (Wireless Fidelity) communication or Bluetooth communication, so that the signal communication module starts a WIFI or Bluetooth function for establishing a communication link;
  • when the charging management module detects the function trigger instruction, the charging management module sends a charging request signal to the signal processing module, and the signal processing module selects a wireless or wired charging protocol and sends a charging start instruction to the charging management module through the signal transmission module, so that the charging management module starts a charging function for storing electric energy in an energy storage element;
  • the GPIO module is connected with the controller processing module, and configured to set a function of an IO (Input and Output) pin according to a requirement.

The chip system integrated with MCU and electromagnetic driving according to the present invention is characterized in that:

• • the voltage acquisition module is configured to acquire a voltage signal of an external power supply and a voltage signal of each module in a minimum chip system;
  • the current acquisition module is configured to acquire a current signal of the external power supply and a current signal of each module in the minimum chip system;
  • the temperature acquisition module is configured to acquire a temperature signal of the external power supply, a temperature signal of an external heating element, and a temperature signal of each module in the minimum chip system;
  • the biological signal acquisition module is configured to acquire a human biological signal;
  • the signal processing module is configured to perform amplification, filtering and normalization processing on a received voltage signal or current signal;
  • the signal processing module is configured to perform amplification, analog-to-digital conversion, filtering and normalization processing on a received temperature signal; and
  • the signal processing module is configured to perform signal amplification, filtering, normalization and identification processing on a received human biological signal.

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

• • 1. The chip system integrated with MCU and electromagnetic driving of the present invention can facilitate the research, development and production of electromagnetic induction heated smoking appliances and smoking appliances with other heating modes, greatly reduce the number of peripheral devices, simplify the difficulty of hardware design, effectively reduce an occupation area of PCB (Printed Circuit Board), reduce the overall heat generation, and lower the development cost, realize a precise temperature control, a rapid warm-up, a low operating power and energy consumption, and an excellent experience.
  • 2. The present invention integrates the power management module, signal acquisition module, controller processing module, electromagnetic driving module, audio and video output module, temperature measurement and control module, and GPIO module into one chip, and coordinates and controls the operation of each module through the controller, and thus realizes a closed loop of controller-power management-power input end of each module, a closed loop of controller-signal acquisition module-signal output end of each module, a closed loop of controller-electromagnetic driving module, and a closed loop of controller-signal communication module-audio and video output module, comprehensively dispatching modules to orderly execute instructions to complete a set program. By integrating the modules into one chip and integrating the electromagnetic driving module into the chip, the difficulty of product development is reduced, the product development cycle is shortened, and the number of peripheral components required by the product is effectively reduced, the power consumption of the whole machine is greatly reduced, and the miniaturization design effect of the product is improved.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a structural diagram of a chip system integrated with MCU and electromagnetic driving according to the present invention.

DESCRIPTION OF EMBODIMENTS

In an embodiment of present invention, a chip system integrated with MCU and electromagnetic driving integrates multiple modules, including programming development software for each module, and realizes all functions of the MCU and electromagnetic driving function by leading out corresponding pins, with characteristics of a high degree of hardware integration, few device materials, and optimized consistency; controls an output frequency of electromagnetic wave through programmable software; achieves a precise temperature control through the MCU, to achieve the effect of a rapid preheating and temperature rise and a greatly reduced power consumption. Specifically, as shown in FIG. 1, the chip system includes: a power management module, a signal acquisition module, a controller processing module, an electromagnetic driving module, an audio and video output module, a temperature measurement and control module, and a GPIO module;

• • where, the power management module includes: a voltage increasing/decreasing conversion module, a charging management module, a battery protection module, and a power output module;
  • the signal acquisition module includes: a voltage acquisition module, a current acquisition module, a temperature acquisition module, a biological signal acquisition module, an electromagnetic driving load acquisition module;
  • the controller processing module includes: a signal processing module, a signal transmission module, and a signal communication module;
  • the electromagnetic driving module includes: an IGBT driving module, a H-bridge power module;
  • the audio and video output module includes: a voice playing module, a LED module, and a LCD module;
  • where, the voltage acquisition module is configured to acquire a voltage signal of an external power supply and a voltage signal of each module in a minimum chip system;
  • the current acquisition module is configured to acquire a current signal of the external power supply and a current signal of each module in the minimum chip system;
  • the temperature acquisition module is configured to acquire a temperature signal of the external power supply, a temperature signal of an external heating element, and a temperature signal of each module in the minimum chip system;
  • the biological signal acquisition module is configured to acquire a human biological signal;
  • the signal processing module performs amplification, filtering and normalization processing on a received voltage signal or current signal;
  • the signal processing module performs amplification, analog-to-digital conversion, filtering and normalization processing on a received temperature signal;
  • the signal processing module performs amplification, filtering, normalization and identification processing on a received human biological signal;
  • the GPIO module is connected with the controller processing module, and is configured to set a function of an IO pin according to a requirement; a chip integrates with a GPIO pin of the GPIO module, realizing an input, output or other special functions of the chip;
  • the controller processing module can be a single chip microcontroller, PLC (Programmable Logic Controller), DSP (Digital Signal Processor), FPGA (Field Programmable Gate Array), ARM (Advanced RISC Machine), SoC (System on Chip) and other controllers.

In the present embodiment, a control flow of the chip system integrated with MCU and electromagnetic driving is as follows.

• • Step 1, receiving, by the voltage increasing/decreasing conversion module, an externally input voltage and converting the externally input voltage into a voltage required for a normal operation of the signal processing module, and then providing it to the signal processing module; where a voltage increasing/decreasing converter can realize a voltage increasing/decreasing conversion in a wide voltage range, can realize increasing an input voltage of 1.5V˜4.2V to an output voltage of 3.3V˜15V and outputting a current of 1 A˜5 A.
  • Step 2, sending, by the signal processing module after being powered on, a power control signal to the power output module, so that the power output module is started up, and outputs a corresponding voltage to each module.
  • Step 3, performing a module self-test control process:
  • after being powered on, each module performs a self-test operation, and sends a self-test signal to the signal processing module through the signal transmission module after the self-test operation is completed.
  • Step 4, according to the self-test signal of each module, the signal processing module performs an enabling operation on a module corresponding to a normal signal in the self-test signal; resets a module corresponding to a fault signal in the self-test signal, and then performs a self-test again, and reports an error on a corresponding module if a fault signal is still received.
  • Step 5, performing a signal acquisition and processing control process:
  • after the signal acquisition module receives a periodic acquisition instruction or an external trigger signal sent by the signal processing module, a voltage, a current, a temperature, and a biological signal are acquired through the voltage acquisition module, the current acquisition module, the temperature acquisition module, and the biological signal acquisition module, respectively, and are sent to the signal processing module through the signal transmission module;
  • the battery protection module monitors an external energy supply element connected to the signal acquisition module, and sends a warning signal to the signal processing module when an abnormal signal is found so as to implement a protection control of a lithium battery; the protection control of the lithium battery includes such as over-voltage protection, over-current protection, short circuit protection, low voltage protection, over-temperature protection and the like;
  • the signal processing module stores and processes a signal uploaded by the signal acquisition module, and performs an abnormal processing on a corresponding acquisition module if the warning signal is received.
  • Step 6, performing an electromagnetic driving control process:
  • the electromagnetic driving load acquisition module sends an access signal to the signal processing module when detecting an access of an external electromagnetic induction coil;
  • the signal processing module sends an electromagnetic driving instruction to the IGBT driving module according to the access signal, so that the IGBT driving module drives an IGBT device circuit and sends an output signal of the IGBT device circuit to the H-bridge power module; where an IGBT driving function is integrated within the chip to realize the IGBT driving function through a chip pin; the H-bridge power module oscillates to generate an electromagnetic signal of a corresponding frequency according to the output signal and is connected to the electromagnetic induction coil; a H-bridge power output function is integrated within the chip, which can realize a full-bridge output or a half-bridge output, the full-bridge output or half-bridge output function is realized by configuring an internal register of the chip accordingly; an input end of the H-bridge power output module is connected to an output end of the IGBT driving module, and an output end of the H-bridge power module is externally connected to the electromagnetic induction coil to generate an alternating electromagnetic field, with a frequency range of electromagnetic wave of 100 kHz˜2.4 GHz;
  • when the electromagnetic driving load acquisition module detects by electromagnetic coupling effect that a ferromagnetic heating element is placed in the electromagnetic induction coil, the electromagnetic driving load acquisition module sends an electromagnetic load signal to the signal processing module; the signal processing module sends a driving instruction to the electromagnetic driving module according to the electromagnetic load signal based on a set power, so as to output an electromagnetic signal with a corresponding power to drive the ferromagnetic heating element, and at the same time sends a temperature measurement and control driving signal to the temperature measurement and control module through the signal transmission module; where, a temperature measurement module of the temperature measurement and control module can be connected to a temperature sensor (such as thermocouple, thermal resistance) to measure a temperature signal, and the temperature control module of the temperature measurement and control module completes control function of temperature measurement of a thermistor;
  • the temperature measurement and control module measures a temperature of the ferromagnetic heating element in real time according to the received temperature measurement and control driving signal, and transmits a temperature signal to the signal processing module through the signal transmission module; after receiving the temperature signal, the signal processing module compares the temperature signal with a set threshold temperature and analyzes it, so as to send a temperature control signal to the electromagnetic driving module through the signal transmission module to adjust the power corresponding to the electromagnetic signal;
  • if no ferromagnetic heating element is detected, the electromagnetic driving load acquisition module sends a shutdown signal to the signal processing module through the signal transmission module, and the signal processing module transmits an electromagnetic driving shutdown instruction to the electromagnetic driving module through the signal transmission module, so that the electromagnetic driving module performs a shutdown of an electromagnetic driving function.
  • Step 7, performing an audio and video output control process:
  • the chip internally integrates a voice playing module, which directly connects an external speaker to realize a voice playing function;
  • the chip internally integrates a LED module, which includes one of constant voltage driving, constant current driving and pulse driving or a combination thereof;
  • the chip internally integrates a LCD module, which includes TN (Twisted Nematic), STN (Super Twisted Nematic), TFT (Thin Film Transistor) and other driving modes, and is directly connected to a liquid crystal display to realize a display function;
  • when access of an external component is detected by the voice playing module, LED module, and LCD module respectively, an identification signal is sent to the signal processing module, and the signal processing module sends an audio and video output instruction to a corresponding module of the audio and video output module through the signal transmission module to start up, the voice playing module receives a voice signal sent by the signal processing module and broadcasts accordingly; the LED and LCD modules receive picture, text and video signals sent by the signal processing module and perform a corresponding output and display.
  • Step 8, performing a chip communication control process:
  • the chip integrates a Bluetooth module, which directly externally connects a Bluetooth antenna to realize a Bluetooth communication function;
  • the chip integrates a WIFI module, which directly connects a WIFI antenna to realize a WIFI communication function;
  • when the signal communication module detects a function trigger instruction, the signal communication module sends a communication request signal to the signal processing module, and the signal processing module sends a communication start instruction to the signal communication module through the signal transmission module according to a set WIFI communication or Bluetooth communication, so that the signal communication module starts a WIFI or Bluetooth function to establish a communication link.
  • Step 9, performing a chip charging management control process:
  • when a charging management module detects a function trigger instruction, the signal communication module sends a charging request signal to the signal processing module, and the signal processing module selects a wireless charging or wired charging protocol, and sends a charging start instruction to the charging management module through the signal transmission module, so that the charging management module starts a charging function to store electric energy into an energy storage element; a wireless charging control protocol adopts one or more of Qi, PMA or A4WP standards; a wired charging control can realize a charging control of a single-cell lithium battery or a multi-cell lithium battery pack; the multi-cell lithium battery pack is a lithium battery pack composed of two or more lithium battery cells connected in parallel or in series.

To sum up, the advantages of the chip system integrated with MCU and electromagnetic driving are: it has a high hardware integration, less peripheral device materials; the electromagnetic driving is controlled by chip programmable software, has a high operating efficiency, and can achieve an electromagnetic wave output of 100 kHz+; MCU can realize precise temperature control, a temperature control accuracy is ≤±2° C.; the temperature rises quickly when preheating, and a fast preheating of less than 15 s can be achieved; the chip has a low energy consumption, a maximum power consumption of less than 10 W, and a constant working state of less than 5 W.