4.8. Redundancy

4.8.1. Module Files

4.8.1.1. Driver

src/app/application/redundancy/redundancy.c
src/app/application/redundancy/redundancy.h

4.8.1.2. Configuration

none

4.8.1.3. Unit Test

tests/unit/app/application/redundancy/test_redundancy.c

4.8.2. Detailed Description

This section of the documentation is not yet complete.

4.8.3. FAQs

Question:

The database entries XXX_BASE and XXX_REDUNDANCY0 for cell voltages and cell temperatures are only read and not written in function MRC_ValidateAfeMeasurement(). Is that correct?

Answer:

It is correct that the cell voltage and cell temperature measurements from the AFE is just read by the redundancy module. Function MRC_ValidateCellVoltageMeasurement() receives the cell voltage measurement values of the base and the redundant measurement as an input and validates the measurements. The validated cell voltages are then written into database entry DATA_BLOCK_ID_CELL_VOLTAGE. This database entry contains the validated measurements and is consecutively used from all other modules throughout the BMS.

The same logic is applied to the cell temperature measurement values. Here, the validated measurements are written into the database entry DATA_BLOCK_ID_CELL_TEMPERATURE.

The database entries XXX_BASE and XXX_REDUNDANCY0 are used to update the cell voltage and cell temperature measurements from the AFEs into the database. The database entry XXX_REDUNDANCY0 will only be used if a redundant AFE measurement is available. The redundancy module checks the validity of the measurements and updates the validated measurements into the database entries DATA_BLOCK_ID_CELL_VOLTAGE and DATA_BLOCK_ID_CELL_TEMPERATURE, which are then used by all other modules, such as the SOX algorithm.