Project 1 (Mini Project on Vehicle Direction Detection

PROJECT REPORT

As per the project requirement, the mode is developed for “Vehicle Direction Determination”.

Aim of Project:

To create a Simulink model of Vehicle Direction Detection as per the Requirement data.

Requirement - 1:

• Steering wheel input as yaw rate (Signal name: SteeringWheel_YawDegreeInput) is the input for this system.
• This is compared against 3 angular values, one each for left turn, right turn & straight drive (Calibration Values: Right_Turn_AngularLimit, Left_Turn_AngularLimit, Straight_Drive_Steering_Angle) to say which specific direction the steering wheel is turning towards.
• Use switch blocks to compare & develop this requirement. Keep this requirement in a subsystem & output of this requirement is a local signal (Signal Name: Vehicle_Turn_Status).

Requirement – 2:

• Keep this requirement as a separate subsystem. Inputs to this requirement are local signal from requirement 1 (Signal Name: Vehicle_Turn_Status) & an input signal from camera (Signal Name: CameraInput_RoadSign), which confirms the occurrence of a road sign.
• Signal Vehicle_Turn_Status is compared against calibration values (Calibration Values: RightTurn_RoadSign, LeftTurn_RoadSign, Straight_RoadSign), if each of them is found equal, then each of the three corresponding output is compared against the camera input signal,
• Using a logical operator block, only one among them is finally given as output signal (Signal Name: Vehicle_Direction_Indicator).

Signals & Calibration Data List:

Signal / Calibration Name	Signal Type	Data Type	Dimension	Min	Max	Initial Value	Units
SteeringWheel_YawDegreeInput	Input	Int16	1	-180	180	-	Deg
CameraInput_RoadSign	Input	Boolean	1	0	1	-	-
Vehicle_Turn_Status	Local	Int16	1	-180	180	-	Deg
Right_Turn_AngularLimit	Calibration	Int16	[1 1]	-180	180	30	Deg
Left_Turn_AngularLimit	Calibration	Int16	[1 1]	-180	180	-120	Deg
Straight_Drive_Steering_Angle	Calibration	Int16	[1 1]	-180	180	0	Deg
RightTurn_RoadSign	Calibration	Int16	[1 1]	-180	180	30
LeftTurn_RoadSign	Calibration	Int16	[1 1]	-180	180	-120
Straight_RoadSign	Calibration	Int16	[1 1]	-180	180	0
Vehicle_Direction_Indicator	Output	Boolean	1	0	1	-	-

Simulink Model:

The base model has 2 inputs and one output:

Inputs: SteeringWheel_YawDegreeInput & CameraInput_RoadSign

Output: Vehicle_Direction_Indicator

The input SteeringWheel_YawDegreeInput goes through Requirement 1 and the output of Requirement 1, that is Vehicle_Turn_Status, and input CameraInput_RoadSign goes into Requirement 2.

Requirement_1 Subsystem:

In this subsystem, the first requirement is designed. For this, we use Switch Blocks. The logic for this is that, if the SteeringWheel_YawDegreeInput is equal to 0, then the output will be Straight_Drive_Steering_Angle. And if not, then it gives the output from another switch block. In that switch block, we check whether SteeringWheel_YawDegreeInput is greater than 0 or not, if it is greater than 0, then the output would be Right_Turn_AngularLimit and if it is less than 0, then the output would be Left_Turn_AngularLimit. This output is stored as the local signal Vehicle_Turn_Status.

Requirement_2 Subsystem:

In this subsystem, the input Vehicle_Turn_Status is checked with relational operator blocks to check whether it is equal to RightTurn_RoadSign or LeftTurn_RoadSign, or Straight_RoadSign and then those outputs are sent through an AND gate along with the input CameraInput_RoadSign. When any of those two are true, then the AND gate gives a true output. And those three outputs go through a MUX block and given as the output signal Vehicle_Direction_Indicator.

SLDD File:

The SLDD file is created to store the calibration values and input and output signals.

Requirement tagging:

Both the subsystems are tagged with the word file of the requirements given.

Model Advisor Check:

Code Generation: