Overview

This Function shall be capable of providing the following facilities:

(1) The ability to take responsibility for processing information from sensors that detect the level of visibility in the geographic area surrounding the Host Vehicle, i.e. the Vehicle in which it is operating.
(2) The ability to process the sensor data to determine the level of visibility and the reason for it, e.g. fog, darkness.
(3) Once processing is complete, the ability to send the data in digital form to the Determine and store local Host Vehicle Conditions Function.

Functional Requirements

(a) continuously monitor the flow of input data
(b) analyse the data in (a) to determine the visibility local to the host vehicle, and if not good, determine the reason, e.g. fog, rain, darkness
(c) if necessary convert the results from (b) into digital data
(d) whenever the visibility changes and/or at other intervals, send the results of (c) to the Determine and store local Host Vehicle conditions function in the data flow containing local visibility data.

Diagrams

Parent Higher Level Function

• 5.15.1 Provide Detection for the Vehicle Surroundings

Input logical dataflows

• fae-local_vehicle_visibility_conditions

Output logical dataflows

• pshvs_local_vehicle_visibility_data

User needs