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Barometric pressure sensor that can measure up to the summit of Mount Everest in 5cm increments
The DPS310 and DPS368 MEMS pressure sensors provided by Infineon have an ultra-high resolution of ±5 cm, so it is possible to measure the summit of Mt. Everest in 5 cm increments.
In addition, since it is made of MEMS with excellent temperature characteristics, accurate and stable measurements can be performed over a wide temperature range.
In this article, we will discuss the following four features of Infineon barometric pressure sensors:
- Achieves ultra-high resolution and accurately measures height of ±5 cm
- Resistant to temperature changes, ideal for mobile products
- Realizes low power consumption! Extend battery life
- More robust with waterproof function (DPS368 only)
1. Achieves ultra-high resolution and accurately measures height of ±5 cm
DPS310 and DPS368 have 24bit resolution.
Therefore, you can measure high-precision data even for climb and vertical velocity calculations. It can also be applied to wearable products for health and sports, and activity tracking.
It can also recognize motion and detect sudden weather changes.
2. Resistant to temperature changes, ideal for mobile products
The DPS310 and DPS368 employ a capacitive sensing scheme using MEMS technology.
Compared to the "piezoelectric" used in general digital barometric pressure sensors, high accuracy is guaranteed even when the temperature changes suddenly.
The temperature inside mobile products often changes rapidly, so it is important to be able to accurately measure temperature changes.
3. Realizes low power consumption! Extend battery life
Current consumption in low power mode is only 3uA per second for one measurement.
By switching the operation mode according to the situation, you can extend the battery life.
It also has a built-in FIFO that records the last 32 measurements, allowing the host processor to stay in sleep mode longer between sensor readouts, further reducing overall system power consumption. can.
4. More robust with waterproof function (DPS368 only)
The DPS368 is IPx8 compliant and can withstand 50m of water for 1 hour.
Therefore, the sensing cell is protected from harsher environments, water, dust and humidity, and is more robust.
Evaluation kit to quickly start evaluating Infineon pressure sensors
EVALSHNBV01 Sensor Hub Nano DPS3xx
Evaluation kit "EVALSHNBV01 Sensor Hub Nano" is available for immediate evaluation of DPS310 and DPS368.
The EVALSHNBV01 Sensor Hub Nano contains the necessary GUI tools and Android app to capture barometric pressure sensor data.
The Sensor Hub Nano Kit communicates with the DPS310, DPS368 barometric pressure sensors and transmits data to the user via a Bluetooth module. The kit is powered by a battery that can be recharged via the Micro-USB port.
By using the GUI tool, you can check barometric pressure, altitude and temperature data.
In addition, the necessary oversampling and measurement rate can be set, and evaluation can be performed while setting the DPS310 and DPS368 in multiple modes.
S2GO PRESSURE DPS3xx
The S2GO PRESSURE DPS3xx board contains one DPS310 or DPS368 pressure sensor and comes with a ready-to-use Arduino library.
Combining the S2GO PRESSURE DPS3xx with the Infineon My IoT adapter allows you to develop your own system solution.
My IoT Adapter is a gateway to external hardware solutions such as Arduino and Raspberry PI, which are popular IoT hardware platforms. These enable the fastest evaluation and development of IoT systems.
Application example
- Indoor navigation (finding floors in shopping malls and parking lots)
- Health and Sports (accurate elevation and vertical speed)
- Outdoor navigation (increased GPS accuracy, e.g. dead reckoning in tunnels)
- Weather station ("microweather" and local forecast)
- HDD driver (hard disk drive leak rate detection)
- Drone (flight stability and height control)
Product Summary
| type name | DPS310 | DPS368 |
| specification | Operating Range: Air Pressure: 300-1200hPa Temperature: -40 to 85°C Barometric pressure sensor accuracy: ±0.005hPa (±0.05m) high accuracy mode Relative accuracy: ±0.06 hPa (or ±0.5 m) Absolute accuracy: ±1 hPa (±8 m) Temperature accuracy: ±0.5℃ Barometric temperature sensitivity: 0.5Pa/K measurement time Standard mode: 27.6ms in standard mode (16x) Minimum: 3.6 ms for low precision Average current consumption: 1.7μA for pressure measurement, 1.5μA for temperature @ 1Hz sampling rate, standby: 0.5μA Power supply voltage: VDDIO: 1.2 - 3.6V, VDD: 1.7 - 3.6V Calibration: Individually calibrated with coefficients for measurement correction FIFO: Stores up to 32 barometric pressure or temperature readings Interface: I2C and SPI Package dimensions: 8-pin LGA, 2.0 mm x 2.5 mm x 1.0 mm RoHS compliant |
Waterproof performance IPx8 Operating Range: Air Pressure: 300-1200hPa Temperature: -40 to 85°C Barometric pressure sensor accuracy: ±0.002hPa (±0.02m) high accuracy mode Relative accuracy: ±0.06 hPa (or ±0.5 m) Absolute accuracy: ±1 hPa (±8 m) Temperature accuracy: ±0.5℃ Barometric temperature sensitivity: 0.5Pa/K measurement time Standard mode: 27.6ms in standard mode (16x) Minimum: 3.6 ms for low precision Average current consumption: 1.7μA for pressure measurement, 1.5μA for temperature @ 1Hz sampling rate, standby: 0.5μA Power supply voltage: VDDIO: 1.2 - 3.6V, VDD: 1.7 - 3.6V Calibration: Individually calibrated with coefficients for measurement correction FIFO: Stores up to 32 barometric pressure or temperature readings Interface: I2C and SPI Package dimensions: 8-pin LGA, 2.0 mm x 2.5 mm x 1.1 mm RoHS compliant |
demo video
Demonstration of DSP368 Door Open/Close Air Pressure Measurement
DPS368 Elevator Altitude Sensing Demonstration
DPS368 water level measurement demonstration
Infineon Activity Tracking Demonstration
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Inquiry
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