4.9 Exercises
1. Produce a functional flow design solution for the software of the system described below:
The primary function of the attitude sensor system is to measure the degree of tilt ("slant angle") and the magnetic bearing ("slant angle bearing") of an oil well logging tool. Basic measurements are made by triaxial accelerometer and magnetometer assemblies. From these, the actual slant angle (SA) and slant angle bearing (SAB) values are computed. Temperature monitoring of the sensor mounts is carried out so that errors caused by dimensional changes due to the high operating temperatures can be corrected. These are called "misalignment errors." The order of processing the input accelerometer signals is as follows:
- Correct raw signals for static misalignment errors.
- Apply temperature compensation to the results.
- Compute the SA and SAB values using appropriate trigonometric formulae.
Attitude data is transmitted to the surface...
