Process: Make Optical - Tape sensor starting 2013-04-11 ending 2013-04-11

If you were logged in and working on this process, you would log your work on this page.

Outputs

Scheduled:

Prototype Material - Tape sensor 1.00 Each due April 11, 2013
Design Optical - Directional optical tape transducer 1.00 Idea due April 11, 2013

Work

Planned Work: (Requirements are ordered by due date)

Work - R&D optics: 1.00 Time - Hours due April 11, 2013

Before I start working on this project I review and restructure documentation - website and docs
I also communicated to SENSORICA about my work.
Project page link
https://sites.google.com/site/sensoricahome/home/projects/tape-sensor
Main doc link
https://docs.google.com/document/d/1HaZh-O3oWcgtxrxaUcCfX6607BS6JPf8PwP6Xq3Xg-Y/edit#
There are a lot of docs that need to be updated around the Tape Sensor.

DESIGN USED
Optical Design - Tape sensor one in (glass) 3 out (PMMA)
https://docs.google.com/drawings/d/1Hlj7-XZFfIicAkXNWfoTiXn3oe-N7Hp_oNsOA2K7WLQ/edit
with the melted glass fiber tip for a smaller exit cone within the gap.

Received the order from Thorlabs and assembled the optical fibers (3 out 1mm PMMA and 1 in, 125/62.5 glass) together.
https://docs.google.com/document/d/1HaZh-O3oWcgtxrxaUcCfX6607BS6JPf8PwP6Xq3Xg-Y/edit#heading=h.rnxa416up1yi
It is not easy to assemble these fibers. I attached the together using a think metal wire. I also put them on a metal bar, but I am not too satisfied with that. Need another bar, probably with a groove in it. Also, the gap is not straight, the joint tube is a little too flexible.
The joint tube is a 2mm diameter transparent shrinking tube. No need to shring the tube around, it is tight enough.

I also prototypeed 7 fiber 250um diameter PMMA fiber, using a shrinking tube to hold them together. We already tried this structure using the 1mm PMMA fiber, and it is quite stable. I polished these fibers and it looks good.
https://docs.google.com/document/d/1HaZh-O3oWcgtxrxaUcCfX6607BS6JPf8PwP6Xq3Xg-Y/edit#heading=h.4cxrib3loxsq

April 23
I worked with Jonathan on the Tape Sensor.
I assembled the rod, from a cylindrical piece of wood, approx 1m long, which I had so buy. I made a groove in it using the Dremel.

April 24
I completed the prototype - glued the optical fibers in the groove of the wooden rod, sanded the rod and inserted it into the aluminum tube. Before inserting it into the aluminum tube we tested the prototype, and it seamed to work well. Some optical fiber preparation (cleaning) was required before connecting the fibers to the PDs and the LED. After the wooden rod was inserted into the aluminum tube I tested the device again. The sensor still works. We need now to find its axis. I also thought about the algorithm to extract the spatial information from the 3 intensities measured on the 3 PMMA collector fibers.
Jonathan helped mounting the PD on the circuit.
Microscopes were used for fiber preparation and for gap alignment inside the groove made in the wooden rod.

April 25.
I continued to work on the demo for Zhu, which was dues on Friday - the day after.
I wrote the equations to extract spatial information from 3 intensities (need to scan the calculations and put them online!)
See document about the mathematical model and simulations
https://docs.google.com/document/d/131qH4gp9XwgynTSZXWs5rarloIF1bV8F_pdhur_t-Yk/edit#
The LabView program (used for acquisition, data processing and display) required some modification, and the equation needed to be implemented - coded in the LabView program.
After these modifications I moved the setup on a different table that we chose for the demo, and wired everything.
I started testing the device and I encountered some problems. No spatial information could be extracted and the data made no sense within the model we were using.
I tried other ways to extract spatial information from the data, but things did not improve.
I discussed with Ivan and Daniel about the problem, and we realized that our model about the prototype was wrong. It turned out that compression and stretch of the joint were dominating the effects. The mirror tilting was was too small to be detected.
The 3 fibers ware applied off center within the aluminum tube. The intensity fluctuations with vending were max if the bending was done on plane containing the fibers. If the device was rotated fibers were 90 degrees no signal was detected.
So it turns out that this prototype doesn't work as expected, but this gave us other ideas about the hockey stick project (see smart sports equipment).

Taken by Tibi
Work events:
April 28, 2013 11.00 Time - Hours Done by Tibi

Before I start working on this project I review and restructure documentation - website and docs
I also communicated to SENSORICA about my work.
Project page link
https://sites.google.com/site/sensoricahome/home/projects/tape-sensor
Main doc link
https://docs.google.com/document/d/1HaZh-O3oWcgtxrxaUcCfX6607BS6JPf8PwP6Xq3Xg-Y/edit#
There are a lot of docs that need to be updated around the Tape Sensor.

DESIGN USED
Optical Design - Tape sensor one in (glass) 3 out (PMMA)
https://docs.google.com/drawings/d/1Hlj7-XZFfIicAkXNWfoTiXn3oe-N7Hp_oNsOA2K7WLQ/edit
with the melted glass fiber tip for a smaller exit cone within the gap.

Received the order from Thorlabs and assembled the optical fibers (3 out 1mm PMMA and 1 in, 125/62.5 glass) together.
https://docs.google.com/document/d/1HaZh-O3oWcgtxrxaUcCfX6607BS6JPf8PwP6Xq3Xg-Y/edit#heading=h.rnxa416up1yi
It is not easy to assemble these fibers. I attached the together using a think metal wire. I also put them on a metal bar, but I am not too satisfied with that. Need another bar, probably with a groove in it. Also, the gap is not straight, the joint tube is a little too flexible.
The joint tube is a 2mm diameter transparent shrinking tube. No need to shring the tube around, it is tight enough.

I also prototypeed 7 fiber 250um diameter PMMA fiber, using a shrinking tube to hold them together. We already tried this structure using the 1mm PMMA fiber, and it is quite stable. I polished these fibers and it looks good.
https://docs.google.com/document/d/1HaZh-O3oWcgtxrxaUcCfX6607BS6JPf8PwP6Xq3Xg-Y/edit#heading=h.4cxrib3loxsq

April 23
I worked with Jonathan on the Tape Sensor.
I assembled the rod, from a cylindrical piece of wood, approx 1m long, which I had so buy. I made a groove in it using the Dremel.

April 24
I completed the prototype - glued the optical fibers in the groove of the wooden rod, sanded the rod and inserted it into the aluminum tube. Before inserting it into the aluminum tube we tested the prototype, and it seamed to work well. Some optical fiber preparation (cleaning) was required before connecting the fibers to the PDs and the LED. After the wooden rod was inserted into the aluminum tube I tested the device again. The sensor still works. We need now to find its axis. I also thought about the algorithm to extract the spatial information from the 3 intensities measured on the 3 PMMA collector fibers.
Jonathan helped mounting the PD on the circuit.
Microscopes were used for fiber preparation and for gap alignment inside the groove made in the wooden rod.

April 25.
I continued to work on the demo for Zhu, which was dues on Friday - the day after.
I wrote the equations to extract spatial information from 3 intensities (need to scan the calculations and put them online!)
See document about the mathematical model and simulations
https://docs.google.com/document/d/131qH4gp9XwgynTSZXWs5rarloIF1bV8F_pdhur_t-Yk/edit#
The LabView program (used for acquisition, data processing and display) required some modification, and the equation needed to be implemented - coded in the LabView program.
After these modifications I moved the setup on a different table that we chose for the demo, and wired everything.
I started testing the device and I encountered some problems. No spatial information could be extracted and the data made no sense within the model we were using.
I tried other ways to extract spatial information from the data, but things did not improve.
I discussed with Ivan and Daniel about the problem, and we realized that our model about the prototype was wrong. It turned out that compression and stretch of the joint were dominating the effects. The mirror tilting was was too small to be detected.
The 3 fibers ware applied off center within the aluminum tube. The intensity fluctuations with vending were max if the bending was done on plane containing the fibers. If the device was rotated fibers were 90 degrees no signal was detected.
So it turns out that this prototype doesn't work as expected, but this gave us other ideas about the hockey stick project (see smart sports equipment).

April 25, 2013 4.00 Time - Hours Done by Tibi

Before I start working on this project I review and restructure documentation - website and docs
I also communicated to SENSORICA about my work.
Project page link
https://sites.google.com/site/sensoricahome/home/projects/tape-sensor
Main doc link
https://docs.google.com/document/d/1HaZh-O3oWcgtxrxaUcCfX6607BS6JPf8PwP6Xq3Xg-Y/edit#
There are a lot of docs that need to be updated around the Tape Sensor.

Received the order from Thorlabs and assembled the optical fibers (3 out 1mm PMMA and 1 in, 125/62.5 glass) together.
https://docs.google.com/document/d/1HaZh-O3oWcgtxrxaUcCfX6607BS6JPf8PwP6Xq3Xg-Y/edit#heading=h.rnxa416up1yi
It is not easy to assemble these fibers. I attached the together using a think metal wire. I also put them on a metal bar, but I am not too satisfied with that. Need another bar, probably with a groove in it. Also, the gap is not straight, the joint tube is a little too flexible.
The joint tube is a 2mm diameter transparent shrinking tube. No need to shring the tube around, it is tight enough.

I also prototyped 7 fiber 250um diameter PMMA fiber, using a shrinking tube to hold them together. We already tried this structure using the 1mm PMMA fiber, and it is quite stable. I polished these fibers and it looks good.
https://docs.google.com/document/d/1HaZh-O3oWcgtxrxaUcCfX6607BS6JPf8PwP6Xq3Xg-Y/edit#heading=h.4cxrib3loxsq

April 23
I worked with Jonathan on the Tape Sensor.
I assembled the rod, from a cylindrical piece of wood, approx 1m long, which I had so buy. I made a groove in it using the Dremel.

April 24
I completed the prototype - glued the optical fibers in the groove of the wooden rod, sanded the rod and inserted it into the aluminum tube. Before inserting it into the aluminum tube we tested the prototype, and it seamed to work well. Some optical fiber preparation (cleaning) was required before connecting the fibers to the PDs and the LED. After the wooden rod was inserted into the aluminum tube I tested the device again. The sensor still works. We need now to find its axis. I also thought about the algorithm to extract the spacial information from the 3 intensities measured on the 3 PMMA collector fibers.
Jonathan helped mounting the PD on the circuit.
Microscopes were used for fiber preparation and for gap alignment inside the groove made in the wooden rod.

April 24, 2013 1.00 Time - Hours Done by Tibi

Before I start working on this project I review and restructure documentation - website and docs
I also communicated to SENSORICA about my work.
Project page link
https://sites.google.com/site/sensoricahome/home/projects/tape-sensor
Main doc link
https://docs.google.com/document/d/1HaZh-O3oWcgtxrxaUcCfX6607BS6JPf8PwP6Xq3Xg-Y/edit#
There are a lot of docs that need to be updated around the Tape Sensor.

Received the order from Thorlabs and assembled the optical fibers (3 out 1mm PMMA and 1 in, 125/62.5 glass) together.
https://docs.google.com/document/d/1HaZh-O3oWcgtxrxaUcCfX6607BS6JPf8PwP6Xq3Xg-Y/edit#heading=h.rnxa416up1yi
It is not easy to assemble these fibers. I attached the together using a think metal wire. I also put them on a metal bar, but I am not too satisfied with that. Need another bar, probably with a groove in it. Also, the gap is not straight, the joint tube is a little too flexible.
The joint tube is a 2mm diameter transparent shrinking tube. No need to shring the tube around, it is tight enough.

I also prototyped 7 fiber 250um diameter PMMA fiber, using a shrinking tube to hold them together. We already tried this structure using the 1mm PMMA fiber, and it is quite stable. I polished these fibers and it looks good.
https://docs.google.com/document/d/1HaZh-O3oWcgtxrxaUcCfX6607BS6JPf8PwP6Xq3Xg-Y/edit#heading=h.4cxrib3loxsq

April 23 I worked with Jonathan on the Tape Sensor.
I assembled the rod, from a cylindrical piece of wood, approx 1m long, which I had so buy. I made a groove in it using the Dremel.

April 23, 2013 5.00 Time - Hours Done by Tibi

Before I start working on this project I review and restructure documentation - website and docs
I also communicated to SENSORICA about my work.
Project page link
https://sites.google.com/site/sensoricahome/home/projects/tape-sensor
Main doc link
https://docs.google.com/document/d/1HaZh-O3oWcgtxrxaUcCfX6607BS6JPf8PwP6Xq3Xg-Y/edit#
There are a lot of docs that need to be updated around the Tape Sensor.

Received the order from Thorlabs and assembled the optical fibers (3 out 1mm PMMA and 1 in, 125/62.5 glass) together.
https://docs.google.com/document/d/1HaZh-O3oWcgtxrxaUcCfX6607BS6JPf8PwP6Xq3Xg-Y/edit#heading=h.rnxa416up1yi
It is not easy to assemble these fibers. I attached the together using a think metal wire. I also put them on a metal bar, but I am not too satisfied with that. Need another bar, probably with a groove in it. Also, the gap is not straight, the joint tube is a little too flexible.
The joint tube is a 2mm diameter transparent shrinking tube. No need to shring the tube around, it is tight enough.

I also prototyped 7 fiber 250um diameter PMMA fiber, using a shrinking tube to hold them together. We already tried this structure using the 1mm PMMA fiber, and it is quite stable. I polished these fibers and it looks good.
https://docs.google.com/document/d/1HaZh-O3oWcgtxrxaUcCfX6607BS6JPf8PwP6Xq3Xg-Y/edit#heading=h.4cxrib3loxsq

April 11, 2013 0.00 Time - Hours Done by Tibi

Before I start working on this project I review and restructure documentation - website and docs
I also communicated to SENSORICA about my work.

April 11, 2013 3.32 Time - Hours Done by Tibi

Before I start working on this project I review and restructure documentation - website and docs
I also communicated to SENSORICA about my work.
Project page link
https://sites.google.com/site/sensoricahome/home/projects/tape-sensor
Main doc link
https://docs.google.com/document/d/1HaZh-O3oWcgtxrxaUcCfX6607BS6JPf8PwP6Xq3Xg-Y/edit#
There are a lot of docs that need to be updated around the Tape Sensor.

Citations

Design Optical - Directional optical tape transducer
Onhand: One in and 3 out, all PMMA
Cited: 1.00 Idea April 23, 2013
Onhand: One in and 3 out
Cited: 1.00 Idea April 23, 2013

Consumable Inputs

Consumable - Optical fiber: 100.00 Length - Millimeter due April 11, 2013

Used this fiber to build the 7 fibers all PMMA 250um diameter fiber.

Onhand: 125/63.5 MM glass Corning Infinicor 300 ~ 18.08 Length - Meter
Onhand: PMMA 0.25 mm SK ~ 95.85 Length - Meter
Consumed: 0.10 Length - Millimeter April 23, 2013 by SENSORICA
Onhand: PMMA 0.5 mm SK ~ 97.88 Length - Meter
Onhand: PMMA 1mm CK ~ 19.49 Length - Meter
Equipment - Power tools: 1000.00 Time - Minutes due April 11, 2013

dsfgfdg

Onhand: Dremel ~ 1.00 Each
Consumed: 30.00 Time - Minutes April 24, 2013 by SENSORICA
Prototype Material - Tape sensor: 1.00 Each due April 11, 2013
Onhand: Low cost tape sensor v1 ~ 1.00 Each
Onhand: one in (glass) 3 out (PMMA) ~ 1.00 Each

Usable Inputs

Equipment - Microscope : 45.00 Time - Minutes due April 11, 2013
Onhand: Confocal Dilson's 1.00 Each
Onhand: Confocal Phil's 1.00 Each
Onhand: Inverted Phil 1.00 Each
Onhand: Microscope inverted Dilson 4.00 Each
Onhand: Stereo microscope - large Phil 1.00 Each
Used: Stereo microscope - large Phil 0.00 Time - Hours April 25, 2013 by SENSORICA
Onhand: Stereo microscope - large SENSORICA 1.00 Each
Used: Stereo microscope - large SENSORICA 10.00 Time - Hours April 25, 2013 by SENSORICA
Onhand: Stereo microscope - small SENSORICA 1.00 Each
Used: Stereo microscope - small SENSORICA 35.00 Time - Hours April 25, 2013 by SENSORICA
Equipment - DAQ and controller: 30.00 Time - Hours due April 11, 2013

used as part of the electronic circuit

Onhand: Arduino nano 1.00 Each
Onhand: Arduino UNO 2.00 Each
Onhand: DAQ and controller LabJack U3 HV 2.00 Each
Used: DAQ and controller LabJack U3 HV 30.00 Time - Hours April 28, 2013 by SENSORICA
Onhand: Phil's USB DAQ 1.00 Each

Process context:

Pattern: Generic R&D
Context: Tape Sensor

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