Convert Pressure to Electrical Signal for Wing Stall Alarm

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Discussion Overview

The discussion revolves around methods to convert pressure into an electrical signal for the purpose of creating an alarm system that indicates wing stall conditions. Participants explore various sensor technologies and their feasibility in an experimental setup.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Experimental/applied

Main Points Raised

  • Himanshu inquires about the best method to convert pressure into an electrical signal for a wing stall alarm.
  • One participant suggests using a piezoelectric pressure sensor, noting that it generates electricity with pressure changes but may have challenges related to altitude variations.
  • Another participant proposes using a pitot tube in conjunction with a pressure transducer to measure pressure and convert it to an electrical signal.
  • A subsequent reply confirms that pressure transducers are designed to convert pressure into electrical signals and asks about additional criteria for the system.
  • Fred describes a plan to create a wind tunnel and use a diaphragm to detect pressure changes, which would move a black paper in front of a light sensor to trigger an alarm, questioning the feasibility of this approach.
  • Fred expresses interest in alternatives to the pitot tube and inquires about the cost of a piezoelectric pressure transducer.

Areas of Agreement / Disagreement

Participants generally agree on the use of pressure transducers for converting pressure to electrical signals, but there are differing opinions on the best approach and specific technologies to use. The feasibility of Fred's proposed method remains uncertain.

Contextual Notes

There are limitations regarding the assumptions about pressure changes at different altitudes and the specific requirements for the alarm system that have not been fully defined.

Who May Find This Useful

Individuals interested in sensor technology, experimental physics, or engineering applications related to aviation and stall detection may find this discussion relevant.

himanshu121
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Hello

I want to make an alarm when the wing stall condition is reached, for that i want to convert pressure into electical signal, what would be he best way any idea?/

Thanks
Himanshu
 
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Piezoelectric pressure sensor? Whenever there is a change in pressure, electricity is generated in this thing, albeit, for a very short while. You can program to use this electricity to switch on an alarm when there is a sudden change in pressure. Though I would suspect that that the change in pressure for stall would be different for different altitudes so it might be a bit tricky to program that.
 
How about a simple pitot tube and a pressure transducer?
 
Yes the pitot tube would be able to give the pressure while the pressure transducer would be able to convert it to electrical signals. that would do fine i guess...
 
You guess? That's exactly what pressure transducers do. They convert pressure to some form of electric signal. What else are you considering for the system? What other criteria do you have to meet?
 
I don't have any constraint of altitude,
what i am planning to do is first to make a wing airfoil section and a wind tunnel(H15 W15 L25) and to
detect a pressure change i am trying to place a diaphragm such that it helps in movement of a black paper in front of a light sensor. Whenever pressure changes, diaphragm would move such that the light sensor detects that change and alarms go on , is this feasible and if not ,then any other solution. Yes pitot tube would be good but i want to try some other way, using transducer would also help, how much a piezoelectric pressure transducer would cost?

Thanks Fred,sid and all
 

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