Challenge

Project 1 (Mini Project on Vehicle Direction Detection

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Project 1 (Mini Project on Vehicle Direction Detection)

Objective of Mini Project:-

1. Development of MATLAB Simulink model as per requirement.

Above is shown our main subsystem which is based on two given requirements. This main subsystem consists of two inputs and one output.
Inputs are: SteeringWheel_YawDegreeInput and CameraInput_RoadSign and Output is: Vehicle_Direction_Indicator .

Each of the inputs has separate Subsystems shown above.
For input SteeringWheel_YawDegreeInput model is designed based on Requirement-1 using blocks of Constant and switch. It has output as Vehicle_Turn_Status which is fed into the input of a second subsystem based on Requirement-2 which is designed using blocks of Constant, Relational operator and Logical operator.

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 a 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 and compare to constant blocks to compare & develop this requirement. Keep this requirement in a subsystem & the output of this requirement is a local signal (Signal Name: Vehicle_Turn_Status).

Keep this requirement as a separate subsystem. Inputs to this requirement are a local signal from requirement 1 (Signal Name: Vehicle_Turn_Status) & an input signal from the 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 an output signal (Signal Name: Vehicle_Direction_Indicator).
Mux output is given to the signal conversion block to convert datatype of signal.

2. Tag the requirements to the simulink model; tagging requirement 1 & requirement 2 to their corresponding subsystems is fine.

Create a word file shown above containing details of both requirements and save this file in the same folder of your MATLAB model.

Select the desired requirement in the file shown above and minimise the word file, Right click on subsystem whose tagging is to be done -> Requirements -> Link to selection in Word.

As we can see above in requirement,Tagging is done for selected subsystem.when we click on that the same word file will open what we created for their requirements.

Tagging will be done and by selecting subsystems it will appear with a coloured background shown above.

3. MBD compliant changes, Data Dictionary creation,S_Function & code generation is an added advantage, and that is not scope of this project.

(a) MBD compliant changes:-

Click on Modelling -> Model settings -> Solver
In solver selection -> Type: Fixed-step and Solver: discrete (no continuous states)
Under Solver details set Fixed step size: 0.01

(b) Data Dictionary creation:-

In simulink model -> modelling -> design -> Link to Data Dictionary
Window of model properties will pop up -> New -> Create a file name -> Apply OK -> Symbol will appear on the left bottom side shown above.

Click on External Data and new window will pop up with a file name written on left side, selecting that will show down a object with "Design data"
To add any signal click on Simulink Signal and for adding any constant click on Simulink Parameter.
Above is shown the list of required signals and parameters to be used in this project.

(c) Creation of S block and code generation:-

To create S block -> Right click on subsystem -> C/C++ code -> Generate S function
New window will appear -> Tick mark the block of SIL at bottom and then select Build option.

Multiple code will be generated with extension of .c and .h files. Above is shown the list of generated codes.

4. Model Advisor:-

On Title bar -> Modelling -> Model advisor -> Window with model name will appear Click OK -> New window will appear having options of By product and By Task
Tick mark the following options shown Above and run the model advisor.

The report generated by this model is supposed to have warnings less than 15.To reduce warnings, go through the report and solve the possible warnings and generate the report again.

Here,we are running our simulation by giving the value of Steeringwheel input as '23'.
So,we can see the result in display as '1 0 0'.It means our vehicle is taking right turn.

Here,we are running our simulation by giving the value of Steeringwheel input as '0'.
So,we can see the result in display as '0 1 0'.It means our vehicle is not taking any turn.

Here,we are running our simulation by giving the value of Steeringwheel input as '-52'.
So,we can see the result in display as '0 0 1'.It means our vehicle is taking left turn.

Hence,we created a system that detemines the direction of our vehicle by giving the camara and steeringwheel as input.

Ship work like this
in your own course.