sound sensor w/analog output
sound sensor w/analog output
(OP)
Does anyone know of a sensor that detects sound and has an analog output. It will be in a noisy environment but would need to be able to detect the sound of an air leak. To the human ear it's easily heard but there's not always someone there to hear it. The analog output would be input to the plc and set an alarm.
thanks in advance
thanks in advance





RE: sound sensor w/analog output
They are located in England.
. . . Steve
RE: sound sensor w/analog output
When the switch closes it sends a signal to the input of the plc. this inturn generates an alarm and stops the machine etc. Why would you want to hassle with analog signal processing if you can make your life a lot easier by using a discrete digital signal? Also, I don't think you are aware of the complexity involved in the device that you decribe. What you are describing is a pseudo voice recognition device that will sample the analog input of the sound generated by the air leak, digitize it and store it in some non volatile type of memory such as eeprom for later comparison. Furthermore the device must be capable of canceling any back ground noise in order to correctly distinguish the sound of the air leak from an infinite possibility of sounds of varying amplitude and frequency. This is virtually impossible.
best regards, plcsavvy
RE: sound sensor w/analog output
Look at these there are many others.
http://www.ultrasonicdirectory.com/suppliers/sagetechnologies.html
RE: sound sensor w/analog output
RE: sound sensor w/analog output
thanks again guys