Comments on: ENLIGHT Update http://micronoptics.com/blog/?p=42 Providing Optical Sensing Solutions Worldwide Fri, 27 Apr 2012 16:09:48 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Amol Khatkhate http://micronoptics.com/blog/?p=42#comment-6288 Amol Khatkhate Wed, 06 Oct 2010 15:07:14 +0000 http://micronoptics.com/blog/?p=42#comment-6288 Dear Tom, As you rightly point out, I should work only with the wavelength data. However, my problem is I want to work with as low a size of data as possible so right now, I am looking at taking peak data. Also, my loading conditions do not change that much and are quasistatic in nature,so the best bet would be to store the last instant wavelength data alongwith the current, wherein incase of peak loss that could be investigated in detail. I will keep it posted as further work progresses. Dear Tom,

As you rightly point out, I should work only with the wavelength data. However, my problem is I want to work with as low a size of data as possible so right now, I am looking at taking peak data.

Also, my loading conditions do not change that much and are quasistatic in nature,so the best bet would be to store the last instant wavelength data alongwith the current, wherein incase of peak loss that could be investigated in detail.

I will keep it posted as further work progresses.

]]> By: Tom Graver http://micronoptics.com/blog/?p=42#comment-6277 Tom Graver Fri, 01 Oct 2010 12:51:33 +0000 http://micronoptics.com/blog/?p=42#comment-6277 It sounds like you're doing interesting work. If you wish to refine peak detection algorithms for special cases, like split peaks, I think it's best if you bypass the internal peak detection and process the entire spectrum in your application. Micron Optics' LabVIEW example (or National Instruments' sm125 LabVIEW driver) provides an easy means of pulling spectrum to your processor. Of course it's even better to avoid split peaks. Micron Optics' sensor packages are designed to isolate FBGs from the transverse loads that can cause split peaks. Accordingly, the sm125's internal peak detection tools operates with the assumption that peaks are Gaussian, about 250pm wide, and have a side mode suppression of >12dB. It is flexible enough to handle some exceptions to this ideal, but split peaks are notoriously difficult to characterize and often change dramatically in shape as the load conditions around the FBG change. It sounds like you’re doing interesting work. If you wish to refine peak detection algorithms for special cases, like split peaks, I think it’s best if you bypass the internal peak detection and process the entire spectrum in your application. Micron Optics’ LabVIEW example (or National Instruments’ sm125 LabVIEW driver) provides an easy means of pulling spectrum to your processor.

Of course it’s even better to avoid split peaks. Micron Optics’ sensor packages are designed to isolate FBGs from the transverse loads that can cause split peaks. Accordingly, the sm125′s internal peak detection tools operates with the assumption that peaks are Gaussian, about 250pm wide, and have a side mode suppression of >12dB. It is flexible enough to handle some exceptions to this ideal, but split peaks are notoriously difficult to characterize and often change dramatically in shape as the load conditions around the FBG change.

]]> By: Amol Khatkhate http://micronoptics.com/blog/?p=42#comment-6276 Amol Khatkhate Fri, 01 Oct 2010 11:37:54 +0000 http://micronoptics.com/blog/?p=42#comment-6276 Dear Sir, I am keen to use some of my research work at NAL, Bangalore and at IST, Lisbon on the algorithms side to modify the software or the firmware provided by Micron Optics for better internal peak detection as I have observed phenomena like a) peak splitting b) peak vanishing with usage of FBG sensors during our experimental tests. How can I incorporate the same and the best way of doing it? Please guide me as I currently possess 1Hz Micron Optics system. regards, Amol Dear Sir,

I am keen to use some of my research work at NAL, Bangalore and at IST, Lisbon on the algorithms side to modify the software or the firmware provided by Micron Optics for better internal peak detection as I have observed phenomena like
a) peak splitting
b) peak vanishing

with usage of FBG sensors during our experimental tests. How can I incorporate the same and the best way of doing it? Please guide me as I currently possess 1Hz Micron Optics system.

regards,
Amol

]]> By: Tom Graver http://micronoptics.com/blog/?p=42#comment-4864 Tom Graver Wed, 30 Dec 2009 21:33:03 +0000 http://micronoptics.com/blog/?p=42#comment-4864 For example, when you enter an expression that translates wavelength to strain, it's calculated in terms of FBG names and perhaps even other sensor names. ENLIGHT keeps track of all these variable names so that none are duplicated. If you try to use a variable name twice, the "error is handled" by flagging the input and providing a message that describes the error. There are several data entry fields that have been improved in this way... For example, when you enter an expression that translates wavelength to strain, it’s calculated in terms of FBG names and perhaps even other sensor names. ENLIGHT keeps track of all these variable names so that none are duplicated. If you try to use a variable name twice, the “error is handled” by flagging the input and providing a message that describes the error.

There are several data entry fields that have been improved in this way…

]]> By: Recall software http://micronoptics.com/blog/?p=42#comment-4802 Recall software Tue, 22 Dec 2009 23:53:52 +0000 http://micronoptics.com/blog/?p=42#comment-4802 what happen about this "Error handling will become more robust." i m unable to get this exactly...???? and i will wait for new sensor devlpmnt. thank you. what happen about this “Error handling will become more robust.”
i m unable to get this exactly…????

and i will wait for new sensor devlpmnt.
thank you.

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