Low power consumption is actually not a term unique to the embedded industry. For most of our common electrical appliances, such as. TVs, refrigerators, air conditioners, etc. all have the concept of low power consumption, including mobile phones and computers. Now let me popularize science for everyone. In fact, low power consumption is not far from us. What does it mean for industrial production and embedded.
Household appliances, such as TVs, can be turned on and off through the remote control board after they are turned off. This means that the TV has entered a low power consumption state, and only the necessary functions are reserved, rs232 to ethernet adapter and other functions that are not needed for the time being are involved. For TVs, turn off the most power-consuming part of the screen, power off the mainboard of the processor, and only keep the power supply for the MCU that monitors the infrared signal and the circuit, so as to minimize the power consumption of the device to save energy .
For mobile phones, it is even more sophisticated. The low power consumption of mobile phones is already a huge system. Everyone may find that when using mobile phones to play games, the mobile phone generates the most heat and consumes the fastest power. caused by the power consumption control system. When the mobile phone is in the off state, the mobile phone will only keep the internal core timer running and the signal detection of the power button part, so as to ensure that the device can start normally from the off state and the internal time will not be confused.
And when the mobile phone is in normal use, for example, when you use the mobile phone to read the news, the mobile phone is actually in a relatively low power consumption mode at this time, because the news does not put too much pressure on the CPU operation, serial to wifi converter and the refresh of the network and the screen is also relatively low. There is not much pressure, so especially for the CPU, it will run at controlled frequency and will not be fully loaded, and the corresponding network radio frequency part and screen power supply part will not have too much pressure. Naturally, the screen part will be set to the lowest power consumption, and only the wake-up part of the current will be reserved. The MCU frequency will be reduced to a very low level, and the network part will also be reduced in frequency accordingly. In this way, the network message push can still be received normally, but the power consumption of each part of the function All controlled to a very low level.
Tags: serial to wifi converter
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