BME280 working principle

[Rosso9]

Hi, I'm using a Bosch BME280 sensor for measuring temperature, relative humidity and pressure.

I need to know which are the working principles of the sensor for temperature, relative humidity and pressure.

Thanks for anyone that helps.

[FAE_CA1]

Hi,

Thanks for your inquiry.

BME280 pressure sensor working principle is at https://www.youtube.com/watch?v=zXIeqeT_FC8. It is pizzo resistive Winston bridge.

BME280 humidity sensor is based on capacitance change MEMS technology and the temperature sensor is from the diode on the MEMS structure.

Thanks.

[Rosso9]

Hi, thank you very much. 

I'm writing an article about a project where I use the BME280. Is there any documents where I can find these informations? So, I can write the reference in the article to the documents or web site.

Thank you very much.

[FAE_CA1 · Accepted solution]

Hi,

BME280 = BMP280 + humidity sensor. BMP280 working principle is decribed a little on page 3 of BMP280 datasheet at https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmp280-ds001.pdf. Due to IP concern we cannot disclose more about BME280 humidity part working principle.

Thanks.

[Rosso9]

Thanks for helping me