Data Logger
The Data Logger Unit runs from a standard +9V battery which makes it flexible for any remote data recording application.
Sovereignty Systems can adapt the Data Logger Unit firmware to record different parameters according to customer requirements.
The standard Data Logger Unit records the following time-stamped data on a FAT32 Micro SD Card for post-processing on a PC/Laptop:
- Temperature (1x Internal, 3x External).
- Airflow.
- Acceleration Data (4x 3-axis Accelerometers).
All sampled data is stored every 4ms (250 samples in a second).
The battery voltage (+9V) is constantly monitored, and the SD Card will be closed & unmounted, and the device halted if the battery level falls below +6.4V.
A logfile is created and it is given a filename with the current date e.g. SEPT5_23.TXT.
Data is appended to the file when the recording is stopped in between on the same day.
Two external signals (Power On/Off & Record On/Off) control the Data Logger Unit Power and Modes.
The SD Card is automatically Mounted and Unmounted by the software based on the Record On/Off switch input i.e. “On” causes Mount and “Off” causes Unmount.
The SD Card is removed, inserted into a PC/Laptop with a Card Slot and the data plotted using Analysis Software.
The Analysis Software was developed as a Python script to allow the user to run it on any Operating System platform i.e. Windows or Linux.
Due to the limitations of the FAT32 file system, the logfile size cannot exceed 4GB.