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https://github.com/ekspla/d6f-ph
A micropython module for differential pressure sensor, D6F-PH (OMRON).
https://github.com/ekspla/d6f-ph
air-speed airspeed anemometer d6f-ph differential-pressure-sensor flow-sensor i2c micropython omron pressure-sensor sensor speedometer
Last synced: 1 day ago
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A micropython module for differential pressure sensor, D6F-PH (OMRON).
- Host: GitHub
- URL: https://github.com/ekspla/d6f-ph
- Owner: ekspla
- License: mit
- Created: 2023-04-18T23:16:25.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2023-10-04T01:30:29.000Z (about 1 year ago)
- Last Synced: 2024-08-04T00:07:20.946Z (3 months ago)
- Topics: air-speed, airspeed, anemometer, d6f-ph, differential-pressure-sensor, flow-sensor, i2c, micropython, omron, pressure-sensor, sensor, speedometer
- Language: Python
- Homepage:
- Size: 16.6 KB
- Stars: 0
- Watchers: 2
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# A micropython module for differential pressure sensor, D6F-PH (OMRON).
I2C driver for D6F-PH pressure sensor (OMRON)
This code was tested with Micropython 1.19.1 - 1.20.0 on STM32F4.
https://github.com/ekspla/D6F-PH
## How to use
**pressure_range** argument ('0505', '0025', '5050') is necessary for the pressure transfer function (defaults to D6F-PH5050), e.g. ```pressure_range='0505'```
w/o crc check
```Python
>>> from machine import I2C
>>> i2c = I2C(1, freq=400000)
>>> i2c.scan()
[108]
>>> hex(i2c.scan()[0])
'0x6c'
>>>
>>> from d6f_ph import D6F_PH
>>> sensor = D6F_PH(i2c)
>>> sensor.read_raw()
(31033, 11086)
>>> sensor.read()
(0.04998779, 23.53571) # Pressure/Pa, Temperature/deg.C
>>>
```
w/ crc check
```Python
>>> from machine import I2C
>>> i2c = I2C(1, freq=400000)
>>>
>>> from d6f_ph import D6F_PH
>>> sensor = D6F_PH(i2c, en_crc=True)
>>> sensor.read()
(0.1499939, 23.72292)
>>>
```
## Note
Because this sensor utilizes a heater and a pair of thermopile, **it should be placed horizontally**. Otherwise, you may observe unacceptable offset in measured pressures.
An offset (as a raw value; n) can be subtracted by using ```offset=n``` argument.
## Application Example
This differential pressure sensor can be used as an air speed sensor by using a Pitot tube. An [example](https://github.com/ekspla/Pitot_GPS_Sensor_Logger/) is shown.
## License
MIT license.
## Reference
- MEMS Differential pressure Sensor User's Manual; [en-D6F-PH_users_manual.pdf, available from OMRON](https://omronfs.omron.com/en_US/ecb/products/pdf/en-D6F-PH_users_manual.pdf)
- GitHub OMRON(https://github.com/omron-devhub)