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Slides are very informative and it was a great session, though I missed the live broadcast. Thanks for archive. Thank you Randy and Alex

Iron

thanks once again for day 1 class of sir randy in giving us another thought and wisdom about sensor...great and excellent presentation sir randy!

now, i will go to the next lesson for day 2 class...thanks to digikey and design news...

i am now on slide 25, almost finishing of day 1 lesson...

the slides being preented was already presented in sensor part 2 2013 class session, but, great sir randy...much appreciated...i am now on slide 12...

i am now on slide 2 for day 1 class lesson...

now it's okey now, the player is working now! thanks again...

i think there something wrong with the player, doesn't work!

good evening sir randy, here i am again. going back for your first sensor class...

Thank you Randy and Alex

Iron

Great Session. Thank you Randy & Alex

Iron

precision vs accuracy issue is frequently missed in designs

Iron

Thank you Randy and Alex for another great presentation.

Iron

Ah, that would explain the trouble that I have been having with the presentation.

Iron

The accuracy on pressure sensors is impressive.

Iron

Amazing that the newer, cheaper temperature sensor also takes up less space, requires less power, and, logic suggests, gives off less heat.

Iron

Thanks Randy, great presentation.

Iron

Good Lecture, want more.

Iron

Thanks to RMilewicz for the app note on Gamma detection, that was interesting.

Iron

Good intro presentation, Randy.  Thanks.

Iron

Good intro presentation, Randy.  Thanks.

Iron

Good intro, looking forward to reviewing the next set of presentations from the archives.

Is wireless communication preffered to wired communication in industry? Are there any drawbacks in wireless communication. Thanks

Iron

Great session, Randy!

Iron

If you need the audio from these sessions, contact me at didymus7@gmail.com.  I'm also a design engineer for inductive displacement sensors and I'd be happy to answer questions.  We don't do proximity but high resolution displacement measurements, and correspondingly, the cost for our systems is more.

Platinum

Reviewing the slides. Why does FireWire only list a length limitation? USB 2.0 also has a length limitation (5m) which isn't much more than FireWire (4.5m). The others would also have maximum lengths, but they are much greater (e.g. 100m for Cat5 Ethernet).

Iron

Good show! This is my second lecture, part two first.

Neat! Now to re-do part two and January if possible.

Iron

My problem is with reviewing old sessions.

I got slides but have no idea how to "control" its sound e.g. to stop it after full review.

Also how to start / enter a new seesion, e.g today 2012-2-14 at 1400 EST?

Joe

 

listened to the archive

thanks for the intro

Iron

There were a lot of good questions that I did not get to answer. Thanks to those who jumped in to add their insight.  See you tomorrow.

Blogger

In slide 17, should the sensing part should be metallic? again should it be magnetic?

 

Inductive proximity sensors respond best to ferrous materials but can also be effective with aluminum and copper targets -  a reduced operating distance. We'll discuss this in Wednesday's session.

Blogger
THasham: you can use PIN photodiode to detect gamma rays: http://sales.hamamatsu.com/assets/applications/SSD/si_pd_circuit_examples.pdf
Iron

ahh well, tomorrow another day I suppose..seems most gone

Iron

Yes, the lecture is over until tomorrow's session begins again.  There will be sporadic comments on this lecture over the next month or so.

Iron

Scilence in the posts

Iron

not hear from him in a while

Iron

Randy will never be gone... :-)

Iron

The audio can be converted to any format for which you wish to pay.

Iron

A sensor by virtue of its function can infact contribute some attenuation in a signal, but generally it is not desired as one wishes to have a high signal to measurement noise ratio

Iron

sensors on the other hand will measure a stimulus of some physical form and procide an output indicative of what was measured...in the case of signal conversion to another physical form then it acts in the role of a transducer eg - light energy sensed with an electric signal output in some proportion...vary resistance ans hence current transmitted

Iron

Attenuator = signal conditioner ...typically a reduction in the signal level normally expressed in decibels. for example a band-pass fillter might severly attenuate signals ouside its pass-bad of frequencies. A passive resistance T or PI network can be used to match impedance between two end circuits to afford proper power-signal matching, but result in signal attenuation

Iron

Hi, Glad to be here...

Iron

attenuatorIi believe conditions signal level

Iron

what is the difference btw sensors and attenuator?

Iron

can the audio be converted to mp3

Iron

I seem to remember that Modbus and Baily were proprietary communication systems. Is that true? Are CAN and Ethernet based communications what we should be designing for? Also, does one need to use a special I/O chip to interface the MCU with it's sensor set? Do these "smart sensors" come equipped to use different communication protocols?

Thanks, Randy and Alex.

Have a great daay everyone.

Iron

I have received a lot of thank you inputs that I appreciate. I will go through the list and find the other questions that I have not answered.

Blogger

The problem is, signal receiving from radioactive izotop is very small and has to be gained more than 1000 times. So ther is no other way avoiding high voltage to reach this gain. Unless new technology sensor.

Iron

Can chip sensors be calibrated? Or does one just need to get the performance spec sheet from the manufacturer?

Many of the newest chip based or MEMS sensors are calibrated based on significant integrated signal conditioning circuitry. Additional calibration may be necessary if the application requirment's exceed the sensor's capability, so you would have to refer to the data sheet for that capability.

Blogger

Thanks for the presentation, Randy.  The TI TMP006 sensor looks neat - may have an application for it.

Re pressure measurements.... You all may recall some of the pressure readings at BP's well head after the blowout in the Gulf were over 17,000 psi. I was floored. We make up lines with swagelock, and I don't think what we use can handle those pressures.

I like to avoid the need for high voltage in PMT..Thanks,

 

Iron

No problem sir, This is the same quastion I asked for.

Iron

Thanks MazianLab..Is there any that doesn't use PMT tube?

Iron

Randy any bibliography or references you may recommend on sensors ?

The comments section of PowerPoint slide has links to many sources I used.

Blogger

Yes randy, tomorrow the same time as today

Iron

@curt Carpenter..please download a pptx view from microsoft at http://www.microsoft.com/download/en/details.aspx?id=6


Iron

Thasham: Look for PMT Tube for sensing the Alpha, Beta nad Gamma rays.

Iron

Is Tomorrow the second part of the session? Same hour?

The time is the same but tomorrow's topic is sensors in machine vision systems.

Blogger

what are the examples of sensors with Ethernet i/f? Wouldn't it be a microcontroller with a sensor with a n/w i/f rather than just a sensor?

This is part of a make or buy type decision. With the right sensing technology, a system designer would interface the sensor to an MCU for use in the network. Alternative, a engineer configuring a system can find a sensor that meets the other application requirments from an industrial sensor supplier that offers the appropriate network protocol as well.

Blogger

Q: Any new Tech sensor using insted of PMT Tube?

 

Iron

BillyMoore: It's the difference between a warning and a critical error, if the reaction time limit is not met

Iron

Hi Randy, what would be a good source to learn on Alpha, Beta and Gamma radiation detector sensor?

Thanks..

Iron

Randy, in your opinion is the 4-20 ma loop going extinct?

@Alaskaman66, same, my sensor experience is "old school" starting with inertial navigation; gyros, accelerometers, sychro circuits

Iron

this session is great!!!

Q. is there a limitation on bus-communication capacity vs the number of sensors and particulars of sensor response times  in relation to bandwidth?

Q. does the bus -communication technology contribute to  the response time expected - (consideration given to real-time monitoring and safety systems backup)?

Q. You mentioned accuracy and precision, but what also of reliability and necesity for use of redundancy in sensing architecture?

Q. What functional characteristic General-Architecture are associated with Smart sensors?

Iron

I click on "Todays Slide Deck" and my PC asks me what I want to open it with.  I have no idea.

Sorry for being new to this.

What is the difference between soft real-time, and hard real-time?

Gold

@curt Carpenter...there is a link to download Today's Slide Deck right above the chat window. Download from there and open it

 

Iron

Thank you Alex, and everyone else.

Iron

Randy: What kind of sensor would you use to detect low frequency irregularities (~1/sec) on a machine with a medium frequency (100-1000/sec) "background noise" vibration?

Iron

OK, I will have to take off earlier. Thank you Randy.

Iron

Several good books on Measurement and control @ ISA.ORG Publishing section / books

My experience with industrial sensors is fairly old school, but after pneumatic process control. Most sensors were big hardware devices. We were just introducing "smart sensors."

Have the complete range of these old sensors been supplanted by mems devices?

I'm ashamed to admit I have absolutely no idea how to see the lecture.  Any hints?

Thanks for nice presentation, Mr Randy?

Iron

@luizcosta: optical, acousitic, ... depending on the material, and the range, and a bunch of other stuff.  I'm not an expert.

Iron

Regarding ...Randy, could you please talk about color and light sensors?

These are topics in the machine vision session tomorrow. Photoelectric sensors play a key role.

Blogger

@isoptera:  Wireless sensors are usually in the ISM band.

http://en.wikipedia.org/wiki/ISM_band

Iron

Randy, will you be discussing liquid and vapor flow sensors?

 

Iron

Reyaz: go look up "theremin" on the interwebs :-)

Iron

Randy, for non conductive matirials, what are the options for proximity sensing?

Iron

Someone was kind enough to provide the historical basis of ODVA. It is the Open Device Net Vendors Association.

Thanks

Blogger

Any books suggested for Proximity sensors, Randy?

Iron

I had to download the 2007 Powerpoint viewer from the Microsoft website to open the slode show...

@JD0001, they are safe to use, but you may get lower bit rates or drop data entirely.  It may be prudent to insert some sort of data verification in to your protocol.

Iron

Thanks again Randy, looking forward to tomorrow.

What is the precision range in the available capacitive proximity sensors?

Iron

What is the text book you prefer to be read on sensors? I had a chance to go through a book written by Kalsi

Iron

interesting and good presentatio

Iron

JD0001: Not to mention security implications... "wireless car hacking" comes to mind :-P

Iron

@Alaskaman, it depends.  Short answer, maybe.

Iron

Thank you for the presentation. It is my first into industrial sensors.

Iron

ODVA  - Open Device Net Vendors Association

In an environment filled with "noise" and existing Wi-Fi, are Wi-Fi sensors safe to use? What about worries of data corruption from a noisy environment?

 

Iron

Thank you for the interesting and informative lecture.

Iron

Thank you for the good presentation.  Again, at what frequencies to wireles sensing systems typically operate?

 

Iron

As far as the different wired comminication protocols, will the same physical wiring work for all? Ignoring environmental considerations for the wiring, are we looking at Coax, UTP, (Cat ?) shielded twisted pair, or something else?

what is an example of capacititve proximity sensors?

Iron

Q: Please tell more more about LVDT sensors.

Thanks Randy.

Iron

is there anyway to publish the notes page for those of us who only have 'view' capability?

Iron

Thanks for all my peers for answering my doubts

Iron

Thanks - Enjoyed the presentation

 

Iron

here is pptx view link http://www.microsoft.com/download/en/details.aspx?id=6

Iron

Thanks!  Great lecture

Iron

Few things as fun and interesting as interacting with the environment.

Iron

until tomorrow; thanks

Iron

Q: Randy, what is better to use in a limited area to comunicate sensors? ZigBee or WiFi?

Iron

You can download PPTX viewer from microsoft for viwing .pptx files

 

Iron

Q: Is there any interface necessary for Piezoelectric sensors? For example transmitting voltage is completely different of receiving signals.

Iron

High speed vision sensing for robotics

Iron

Q: Randy, could you please talk about software options for Machine Vision Systems tomorrow? Have you worked with OpenCV?

Iron

Thanks Randy and Alex. It was very informative lecture.

Iron

@snandu13, i agree with danlafleur. modbus protocol can also be done through tcp/ip...

Iron

At what frequencies to the wireless sensors typically opearate?

 

Iron

Thanks.  And .ppt would be nice for those of us who can't use .pptx.

Iron

thanks Randy, Alex and all. See you tomorrow.

Iron

the "notes" is not a separate page, it's notes section of a slide in powerpoint (not visible in presentation mode)

Iron

Any concern using Zigbee in a sensor network?

Thanks for presentation

 

 

Iron

With inductive proximity sensors, does the material being sensed need to be metallic or ferrous?

You can record your own audio with Freecorder, but I can't remember where I got it, check the web.

Iron

I am back after refreshing the page..

Iron

@alaskaman - yes, you can and want to calibrate your sensor

Iron

Randy will be coming on this live chat directly in a few min to answer your questions directly

Blogger

@snandu13, modbus is the protocol and can be carried on rs485, rs232 and slow or high speeds It just depends on the application.

Iron

where is the "notes page" that you were referencing?

Iron

Randy, you mentioned a sensor with ADC capability. I can infer that more complicated processing capabilities might be present in some of the more modern sensor packages. Is that an accurate assessment and they would be names "smart sensors"?

Iron

What is the difference between Soft-Real-Time and Hard

 

Iron

is there any trend to go over USB3.0?

Iron

Can chip sensors be calibrated? Or does one just need to get the performance spec sheet from the manufacturer?

A good session. Looking forward to tomorrow.

Iron

Thanks Alex and Randy..

 

Iron

Question: What kind of sensor would you use to detect low frequency irregularities (~1/sec) on a machine with a medium frequency (100-1000/sec) "background noise" vibration?

Iron

thanks, alex and randy!

Iron

Pre-Office2007 format (.ppt) version of today's powerpoint file is here: http://ifile.it/tejal8x/1_sensor.1ch.ppt


Thank you Randy, very interesting and informative lecture.

Iron

Randy, thank you for a very informative lecture!

Iron

Randy, how can EtherNet/IP be considered "soft real-time" when it synchronizes with much lower jitter (< 200ns) than any of the other three buses (< 1us == 1000 ns) on the Motion Control Protocol Comparison slide?

Iron

Is Tomorrow the second part of the session? Same hour?

 

 

Iron

Thank you Frnak, excellent presentation.

 

Iron

Randy any bibliography or references you may recommend on sensors ?

 

Iron

thank you Randy, It's a great lecture!

Iron

Excellent intro to sensors, Randy.  Thanks a bunch.  Looking forward to the next four.

Radio player went into buffering mode...

Iron

If it is RS485, will it be compatible to Modbus necessarily?

Iron

JMHO...  Interrupting the presenter is a tough decision to make, but it is necessary to keep the studend in sync with the presentation.  Ya gotta do what ya gotta do.

Iron

Q: Randy, could you please talk about color and light sensors?

Iron

I agree, interrupting the presentor's audio presentation repeatedly is very jarring.

what are the examples of sensors with Ethernet i/f? Wouldn't it be a microcontroller with a sensor with a n/w i/f rather than just a sensor?

Iron
The new FireWire S1600 and S3200 (1.6 Gbit/s and 3.2 Gbit/s) devices use the same 9 conductor connectors as the old or existing FireWire S800 and S400 devices.
The battle will be with the USB-3.0.    FireWire are expected to increase speed to 6.4 Gbit/s and to add additional small multimedia interface connectors.
Iron

@Alexander Wolfe: Only too true!

Iron

IEEE 1394 - commonly found in frame grabbers, devices that capture and digitize an analog video signal.

Iron

Mr E, if the lecturers cued all the slides like they're supposed to, I wouldn't have to cut in :)

 

Blogger

Shouldn't Foundation Fieldbus be listed here?

Iron

what about ethernet I/P

Iron

Alex, instead of cutting in on the audio, maybe you could just type the slide number and title on the chat. I think everyone is seeing the chat OK.

Iron

Hart , fieldbus Profinet, Devicenet

Iron

Hart used usually around, flow, position sensors

Iron

the audio is working fine

Iron

Some are designed for ferrous, non ferrous

Iron

@krhohio: yep. put in a sheet of metal, press, take out a fully formed car door

Iron

In slide 17, should the sensing part should be metallic? again should it be magnetic?

Iron

Q: How I can get better results with the proximity sensors? - for example sensing/detecting metalic screws in metalic surfaces?

Iron

Has the audio gone away?

@s.schmiedl Like "Imported from Detroit" type hydraulic presses?

Iron

krhohio:  munitions testing

Iron

Shown is a shielded version, to get more range use unshileded versions.

Iron

krhohio:hydraulic presses

Iron

Wow, what application uses 29,000 psi?

Iron

@eugenem - it is simple as any I2C device

Iron

http://www.ti.com/tool/tmp006evm

Iron

Randy - what kind of price range is appropriate for these pressure sensors?

Iron

thanks, Zwilrich. i will have to do a more search on it, now that i know it is simple to use :)

Iron

Randy, still in the temperature sensing. Is there any process control application where we need to be concerned with signal bandwidth requirements?

Iron

Can you recommend me any flow sensor IC with wireless interface ?

 

There may be significant safety issues with High Pressure applications as well.

Iron

@EugeneM.  I have.  Found it easy to use.

Iron

has anyone used the tmp006?

Iron

Thanks for the effort. Can you contact me following this presentation.

Iron

There's a development kit for the TI TMP006.  It plugs into a USB port.

Iron

Is the chip sensor  infrared? Dont you require a window fo receiving infrared rays?

Iron

 Flow sensors ? just google that ...

Iron

Can you please reference me on Flow sensors manufacturers ?

Iron

@danlafeur - this is how is defined the "room temperature" for testing

Iron

is there a standard precentage of accurency we should use

@slk, room temp at my place is 68F!

Iron

I had to restart IE for Audio.

Iron

room temperature  should be 24°C

Iron

@Lahha01 Can you see the "More Troubleshooting" link just above the "Your Post" dialog box?
If so, follow it and on the bottom of the page it tells you what URL's must be unblocked by your
IT department for the streaming audio to work.

Iron

try browser refresh/reload for no audio

Iron

@snandu13, hmmm, that's what i thought, too...

 

Iron

Me too. I'm not getting any audio.

 

Iron

Should the room temp be 77 deg F?

Iron

Randi, in the most obvious process control applications, control optimization is not too frequent. Can you name a few applications where indirect measurements (state estimation) are necessary in the industry around us?

Iron

No luck ..I can get the slides but no streaming Audio/video..(434) 974-2082

Iron

For vibration there is also MEMS (although you could call that capacitive).

Iron

Acoustic techniques can also be used for proximity and temperature sensing.

 

 

Iron

--Office 2007 hasn't added any thing good as far as workd, excel or

power point functionality (in my humble opinion)--

I agree totally- in addition I can't find many of the commands that I used to know, so the new versions of Ofiice are real productivity killers for me.

Iron
@ frakbishop - you may want to "measure" the motion in your apps, maybe vibration too, but generally you want to have your board to work well in vibration condition.
Iron

@Lahha01 Since you were able to post you are already "logged on".
The working on the other pages is confusing about "You need to log on...".


Iron
Audio is loud and clear
Iron

Isnt vibration an aspect of motion

@mariaSolsticio There isn't any video; you have to click the link above "Today's Slide Deck" to get the PowerPoint slides. There is streaming audio.

IRON

 

IRON

 

Iron

Usually you can save power points to an early format ie ppt

and it creates less problems for people trying to view your slides

Office 2007 hasn't added any thing good as far as workd, excel or

power point functionality (in my humble opinion)

Pre-Office2007 format (.ppt) version of powerpoint file is here: http://ifile.it/tejal8x/1_sensor.1ch.ppt

Hello!  They are not allowing me to have a video streaming session here... will it be possible to download everything later? :(

 

today's sound is excellent. thx

Iron

Audio is working for me

Iron

audio is working for me.

 

Iron

Audio is working for me...

Iron

Hello everyone, do we have audio?

Iron

Hello everybody, what time shoul this began?

 

Iron

Another week, and the start of another set of presentations.

Iron

Not sure I've fully absorbed what we've gotten so far, but I'm ready for more!

Iron

LibreOffice 3 opens ppt and pptx file just fine and it's open source.  Google for download URL.

Iron

you must already have it on your comp...do a search 1_sensor.1ch and try opening manually (I assume you downloaded to open immediately first), then tried a second download inadvertently

Iron

Back again for another week of excellent presentations!

Iron

the others were "classic" ppt, if such a thing exists, the current decks are pptx, i.e. office 2007 or newer

Iron

Looks OK in PowerPoint 14.1.4 for Mac.

 

Gold

Hi everyone, hoping an outstanding lecture as we have before :)

Iron

@kenward1000: pptx works for me with ppt2007

Iron

the powerpoint is .pptx and opened in the powerpoint viewer instead of my browser tab.

not sure what format the other files were in.

Iron

No, I have not, I downloaded if you want I can mail it to you

Iron

I downloaded the slide deck but PowerPoint won't open it, claiming it's corrupt. I've always been able to open previous slide decks.  Anyone else having this problem?

Engineers like it hot ... see slide 9 :-)

Iron

Alex how can we download audio files of these classes? like MP3 or whatever.

Iron

Hi everybody. Happy see you again.

Iron

Hello All, ready for a great week.

Iron

@Alexander Wolfe - Thanks for the LinkedIn suggestion

 

Iron

Please join our Digi-Key Continuing Education Center LinkedIn Group at http://linkd.in/yoNGeY

Blogger

Be sure to click 'Today's Slide Deck' under Special Educational Materials above right to download the PowerPoint for today's session.

Blogger

The streaming audio player will appear on this web page when the show starts at 2pm eastern today. Note however that some companies block live audio streams. If when the show starts you don't hear any audio, try refreshing your browser.

Blogger

Thanks... Hadn't opened ppt yet.

@aa1bb2cc3dd4 if you look first page of ppt file will see - there is writen "Randy Frank"

Iron

Who is the presenter today?

Thought I'd be the first......

Iron


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