Overview
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According to statistics, China's building energy consumption accounts for about 30% of the country's total energy consumption. With the improvement of people's living standards, building energy consumption will continue to grow rapidly. In order to reduce building energy consumption, help users save electricity costs, and achieve more humanized control, this requires the temperature controller to be more intelligent.
The solution utilizes various sensors and wireless WIFI modules to receive weather forecast information on the network and control commands transmitted by the user through the network to achieve intelligent control.
The infrared sensor senses if someone is at home, and if the door is forgotten to turn off the air conditioner, the air conditioner is automatically turned off. On the way home, you can use your mobile phone to remotely control your home air conditioner to start running. This allows you to enjoy a comfortable living environment while optimizing energy consumption.
The intelligent thermostat tracks the user's temperature adjustments and custom schedule habits, as well as obtaining weather forecasts over the network. Automatically help users set the temperature adjustment plan for the next week.
system structure
Intelligent temperature controller block diagram
main controller
The EFM32 is the world's lowest power 32-bit microcontroller from Energy Micro in Norway and has a rich peripheral interface. The actual code from Flash is executed in active mode with 180μA per megahertz, 900nA in deep sleep mode and 20nA in shutdown mode.
Capacitive touch button
EFM32's unique LESENSE module allows the user to use only a few copper foils on the peripheral hardware to realize the function of the touch capacitor, eliminating the problem of long-term switch aging of the mechanical buttons, greatly improving the grade of the product.
TFT LCD display
The EFM32 has its own TFT driver, which can directly drive the TFT LCD, enabling the intelligent temperature controller to display more customized information more clearly.
AR4100 wireless WIFI module
The AR4100 is an 802.11n WIFI to SPI chip from Qualcomm. In power-saving mode, the current consumption is only 5uA; the wake-up time is only 2.2ms.
Program advantage
Compared with the traditional thermostat controller, the intelligent thermostat realizes intelligent and humanized intelligent temperature regulation, which can achieve lower power consumption and save electricity costs. Enjoy a comfortable living environment while optimizing energy consumption.
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