For example, the internal overheating protection of induction cooker: the protection trigger temperature is mostly 90 to 95 degrees, and the lifting temperature is 60 to 70 degrees. The nature of protection is to suspend shutdown and display the fault code. If the temperature reaches 1 10 degrees, the protection circuit will be forced to close.

Embedded system consists of hardware and software. It is a device that can run independently. Its software content only includes software operating environment and its operating system. Hardware content includes signal processor, memory, communication module, etc. Compared with general computer processing systems, embedded systems are quite different. It can't realize mass storage function because there is no matching mass media. Most of the storage media used are E-PROM, EEPROM, etc. The software part takes API programming interface as the core of the development platform. The core layer of embedded system is the central processing unit, which includes the arithmetic unit and the controller module. On the basis of cpu, it is further equipped with memory module, power module and reset module to form the so-called minimum system. Due to the progress of technology, IC manufacturers usually put many peripherals in the same IC, which is more convenient to use. This kind of chip is usually called a microcontroller. On the basis of microcontroller, power supply sensing and detection, actuator module and supporting software are further expanded to form a complete unit with specific functions, which is called embedded system or embedded application.