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About nikhil1
since
07-19-2023
11-14-2023
nikhil1
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11-13-2023
06:30 AM
HI BSTRobin, we are using all 4 Temperature, Humidity, barometric pressure and gas measurement along with sensor tec library to estimate IAQ and bvov levels. there is a 5 degress celcius thermal increase in our product to compensate this, 5 degress celcius is provided as compensation factor to sensortec library and output compensated values of sensortec library are used to report to user. Regards Nikhil
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11-10-2023
01:23 PM
HI, we are using BME680 gas sensor in one of our product along with bosch sensortec library along with temperature compensation feature. we use temperature compensation factor of 5 degrees centigrade (as derived from our hardware performance), sensortec library based on the temperature compensation also compensates humidity. we have an observation with the compensation when the device is powered off and powered on, initially for 20 mins the humidity values reported by sensortec library are high in the range of ~72% and constant irrespectivite of raw humidity value ( raw humidity value was varying). after around ~ 20 - 22 minutes sensortec library stats reporting compensated humidity value. this has an negative impact with our customers who turn on our device for first time they observe High humidity values initially. are we doing anything worng with compensation?
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07-19-2023
11:07 AM
HI Gran1sh, Thank you for quick and prompt reply. when configuring ESP32 in deep sleep, do you wake up every 300 seconds to read samples from BME680 and further process samples in BSEC library ro get iaq values? if above is true, every 300 seconds ESP32 wakes up from deep sleep it consumes around 25-30mA for ~ 2 seconds to read process samples from BME680, is this the approach followed? apologies if i am getting into too minute details of your design, we are working on a batery powered solutiond this helps us in few calculations for our design. 25 mA - 30 mA every 300 seconds will be an overkill for us. Thanks
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07-19-2023
08:28 AM
HI, Is there any example integration with BME680 and BSEC library in ESP32-S3 ULP co-processor? Requirement is for battery powered system to read Temp, Humidity and IAQ values and report to user. Aa requriement is a battery powered system, as per BSEC library host MCU esp32-S3 needs to wake up every 5 minutes(300 sec) in ULP mode and read BME680 sensor and further process the samples using BSEC library to derive IAQ values. waking for esp32-s3 every 5 minutes consumes good amount of power whichis not suitable for battery powered system, as esp32 main core consumes around 25 ma when core is running. wanted to check the feasibilty of : 1. Running BME680 and BSEC with ULP-Coprocessor on ESP32-S2 where ULP co-processor on ESP32-S3 csonumes only 10 uA 2. Can we stack the samples from BME680 and later provide to BSEC library for IAQ calculations, in the sense ULP coprocessor will wake up once in every 300 seconds and stack the samples for 12 iterations (will buffer12 set of samples) after 12 sample collection by ULP coprocessor on ESP32-S3, main core wakes up every 12*300seconds - 36000 seconds - 60 minutes and feeds 12 set of samples to BSEC library to get IAQ values from library? Thanks
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07-19-2023
08:15 AM
HI Gran1sh, were you able to run BME680 on ESP32-S3 ULP-coprocesser? Yhanks
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