Overview 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 user-friendly control, this requires temperature controllers to be more intelligent. This solution uses various sensors and wireless WIFI modules to receive weather forecast information on the network and control commands transmitted by users through the network to achieve the purpose of intelligent control. The infrared sensor senses whether someone is at home. If you forget to turn off the air conditioner when you go out, the air conditioner is automatically turned off. On the way home, the user can use the mobile phone to remotely control the air conditioner at home to start running. In this way, you can enjoy a comfortable living environment under the premise of optimizing energy consumption. The intelligent thermostat tracks the user's temperature adjustment and custom schedule habits, and obtains weather forecasts through the network. Automatically help users set the temperature adjustment plan for the next week. system structure Block diagram of intelligent temperature controller. main controller EFM32 is the world's lowest power 32-bit microcontroller from Energy Micro in Norway, and has a wealth of peripheral interfaces. When the actual code from Flash is executed in active mode, the power consumption per megahertz is 180μA, in deep sleep mode is 900nA, and in shutdown mode is 20nA. Capacitive touch buttons EFM32's unique LESENSE module allows users to use only a few copper foils on the PCB to realize the function of touch capacitors on the peripheral hardware, eliminating the problem of long-term mechanical switch aging and greatly improving the product's grade. TFT LCD display EFM32 has a built-in TFT driver, which can directly drive the TFT LCD, so that the intelligent temperature controller can display more customized information more clearly AR4100 wireless WIFI module AR4100 is an 802.11n WIFI to SPI chip from Qualcomm of the United States. In power saving mode, the current consumption is only 5uA; the wake-up time is only 2.2ms. Solution advantages Compared with the traditional constant temperature controller, the intelligent temperature controller realizes intelligent and humanized intelligent temperature regulation, which can achieve lower power consumption and save electricity costs. Under the premise of optimizing energy consumption, enjoy a comfortable living environment.
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