Human physiological parameter monitoring system based on stm32

Project Overview:
A wearable human physiological parameter detector, with five major modules, heart rate detection, temperature and humidity detection, step detection, display module, WiFi module, based on smt32 microcontroller. It has many functions. Users can directly wear the human physiological parameter detector on their waist. The elegant design can be firm and stable without losing style. We can instantly understand our own heart rate, temperature, and humidity, and can also transmit it to Alibaba Cloud through the WiFi module for uploading to the cloud. By viewing it on our mobile phones, we can quickly understand our own physical condition, and then adjust our body's breath reasonably. For sports enthusiasts, our human physiological parameter detector can be worn during exercise. You can know your breathing and step count, so you can make reasonable arrangements and adjustments to your exercise plan. After all, exercise is not an exception. , if you want to achieve good exercise results, implementing "planned exercise" is the best way. What's more, users can transmit the measurement results of heart rate and step count to Alibaba Cloud through the WiFi module for recording, and can also share them with friends, thereby encouraging friends around them to exercise together.
Function description:
The humidity sensor uses DHT11: The DHT11 sensor includes a resistive humidity sensing element and an NTC temperature measuring element, and is connected to a high-performance 8-bit microcontroller. The product is a 4-pin single-row pin package and is easy to connect.
The attitude sensor uses ADXL345: ADXL345 is a small and thin ultra-low power consumption 3-axis accelerometer with high resolution (13 bits) and a measurement range of ± 16g. Digital output data is in 16-bit two's complement format and can be accessed via the SPI (3-wire or 4-wire) or I2C digital interface.
The WiFi module we use is ESP8266: The leading features of the ESP8266 system include: energy-saving VoIP fast switching between sleep/wake mode, adaptive radio bias for low-power operation, front-end signal processing function, Troubleshooting and wireless system coexistence features eliminate cellular/Bluetooth/DDR/LVDS/LCD interference.
The screens use OLED screens: they have a high resolution of 128*64, ultra-wide viewing angle, ultra-low power consumption, wide power supply range, small size and use IIC communication method.
Summary:
The program for migrating to the cloud took a long time to write and is quite complex, but in other aspects it is okay. I am a beginner in electronics, so if I make any mistakes, I welcome your criticism and correction.