Hey Vignesh,
I understand that you are trying to design a counter that increments each time your input transitions from 0 to 1. If there are 5 such transitions within a 5-second window, the output should be set to 1. The timer should only count the time when the input is neither 0 nor 1 continuously.
Here's a workaround using Simulink and stateflow:
Simulink Setup
- Input Signal: Use a Pulse Generator or Constant block to simulate the input signal.
- Stateflow Chart: Create a Stateflow chart to handle transition detection, counting, and timing logic.
Stateflow Chart Design
States:
- Idle: Waiting for the first transition.
- Counting: Counting transitions within 5 seconds.
- Output: Setting the output to 1 if the condition is met.
Transitions:
- Idle to Counting: On detecting the first 0 to 1 transition.
- Counting to Idle: If 5 seconds pass without 5 transitions.
- Counting to Output: If 5 transitions are detected within 5 seconds.
Stateflow chart
state Idle {
on entry: count = 0; timer = 0;
if (input == 1) {
transition to Counting;
}
}
state Counting {
on entry: timer = 0;
during: timer = timer + dt;
if (input == 1 && prev_input == 0) {
count = count + 1;
}
if (count >= 5) {
transition to Output;
}
if (timer >= 5) {
transition to Idle;
}
}
state Output {
on entry: output = 1;
on exit: output = 0;
transition to Idle;
}
Simulink Integration
- Input: Connect the input signal to the Stateflow chart.
- Output: Connect the output of the Stateflow chart to an Outport block.
This is how the complete flow will look like:
[Input Signal] --> [Stateflow Chart] --> [Output Signal]
Please refer to the following MathWorks documentation link(s):
- https://www.mathworks.com/help/stateflow/ug/detecting-edges-in-signals.html
- https://www.mathworks.com/help/stateflow/ug/modeling-a-simple-system-with-stateflow.html
- https://www.mathworks.com/help/stateflow/ug/using-the-after-operator.html (for using timers in Stateflow)
Hope this helps
Regards
