Timer to send a new message?

1 次查看（过去 30 天）
israa
israa 2014-9-5
评论： israa 2014-9-6
Hi all
I have a system with receiver and a triggered sender. When the receiver receives a new message it will trig the sender to send the next message.So if the message lost in their way to the receiver the system will hang forever.
I need a timer that wait the message for a specific period ( 1 sec ) , if no new message received the sender will triggered to send next message. of course this timer reset when receiver has a new message.
My receiver has a trigger out port that switches between 1 and -1
  2 个评论
Salaheddin Hosseinzadeh
Salaheddin Hosseinzadeh 2014-9-5
编辑：Salaheddin Hosseinzadeh 2014-9-5
Oh! You should have mentioned simulink in your question.
I've no idea about simulink, I just know you can write a code and create a block from it.
Do your self a favor, add more details to your question and I'll remove my answer so that someone else find your question in unaswered section.
Good Luck!
israa
israa 2014-9-5
ok sorry for not mention that i'm using simulink, thanks a lot

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

C.J. Harris
C.J. Harris 2014-9-5
I would probably use a resettable integrator for this task. Feed the integrator a constant value of '1', that way it will act as a timer. If the timer reaches a defined value (1 sec) send a message (then reset the integrator). If you receive a message, send a new one, and just reset the integrator to zero and it will begin counting up again.
Of course - there is always the option of using Stateflow for such a task.
  3 个评论
显示 1更早的评论
C.J. Harris
C.J. Harris 2014-9-5
You cannot compare a floating point number using the '==' operator, even if 1 is divisible by your time-step, it is still unlikely to trigger. Instead you should just check if the output from the integrator is equal or greater than '=>' 1.
israa
israa 2014-9-6
Thank you C.J. Harris, it's work now

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Simulink Functions 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by