SLOPE 1st workshop - presentation 5

www.evk.biz© EVK DI Kerschhaggl GmbH 2014

Matthias KerschhagglBiRT Workshop, 20/03/15

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Hyperspectral‐/ Chemical Imaging as Key Technology in Sensor Based

Sorting Applications


Outline

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www.evk.biz© EVK DI Kerschhaggl GmbH 2014 [email protected]

Who we are

Smart solutions providersince 1987

2006: HSI camera & classificationsystem introduced to market

Real‐time classification and sorting: All‐in‐one device

Industry proven in recycling, mining, food processing and pharmaceutical applications

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Applications

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Metals from slagHousehold waste

C&D Recovered Paper Wood Sorting

Potato Sorting &Grading

E‐Scrap

Nut Sorting


References RecyclingGlass Sorting

Customer:

EVK products:EOS – Color ImagingARGOS – Conductivity Imaging

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References RecyclingMetal Scrap

Customer:

EVK product:ARGOS –Conductivity Imaging

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References RecyclingPlastic Sorting

Customer:EVK product: HELIOS – Chemical Imaging

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Recovered Paper Sorting

[email protected]


References RecyclingMinerals, Metals, Plastic

Customer:

EVK product:EOS – Color Imaging

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References MiningMineral Sorting

Customer:

EVK product:HELIOS – Chemical Imaging

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References Food SortingDiv. Nut Sorting / Recycling

Customer:

EVK product:HELIOS –

Chemical Imaging

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References Food Processing Potato Sorting

Customer:

EVK products:HELIOS –Chemical Imaging

EOS – Color Imaging

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www.evk.biz© EVK DI Kerschhaggl GmbH 2014 [email protected]

Hyperspectral Imaging Technology

Camera internal classification and RGB visualization of chemical differences for real‐time analysis

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www.evk.biz© EVK DI Kerschhaggl GmbH 2014 [email protected] 14

HELIOS – Spectral Ranges


Outline

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• Recycling

• Food

• Pharmaceuticals

• Mining


Recycling

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papercardboard

PE‐LD


Recycling

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PE PVC


Recycling

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Quality analysis ofpaper

Paper + Glue, 1st derivative, normalized


Outline

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• Recycling

• Food

• Pharmaceuticals

• Mining


FoodHSI preview of SE

potatoe

CCI view of SE potatoe

Potatoe after frying

Sugar end


FoodFood sorting – Blueberries and stems


Food

Food sorting – Noodles and worms


Food

Starch

Glucosewater

Simple VIS representation(filter convolution)

of HSI data

CCI representationof HSI data

(PCA: Principal Component Analysis)Quantitative analysis is possible


HSI Objectives/Trends Monitoring of input streams for quality and process control ‐>

HSI as Process Analysis Technology (PAT) Sorting and monitoring of product flows in one machine using

HSI/CIT Quantitative analysis of chemical constituents as add‐on

Removing foreign materialsand infer quantitative information on e.g. dry matter and glucose in potatos at the same time

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HSI – Quantitative Analysis

wellness.byu.edu

Fig 2: PLS schematics (Wold et al. 2001)

Fernadez‐Novales et al. (2009)

X YPredictors (spectra)

Observations(reference analysis)

X Y

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Dry Matter

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REMINDER 1st inline TEST 2013

HELIOS Camera

R = 0.9 RMS = 1 %


Inline Dry Matter Measurements

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• Dry matter content tracedby spectral signatures

• Inferred FIR‐filter kernelallows for concentrationprediction


Dry Matter Machine

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• Integrated in sortingmachine (INSORT Observer)

• Valdidated model(R^2=0.9, RMS=5 %)


Award

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International FoodTec Award

DLG (Deutsche Landwirtschafts‐Gesellschaft

/ German Agricultural Society)


Dry Matter

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Dry Matter

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waterchannels


Dry Matter Statistics

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• DM „heat map“• DM value histogramm• Mean DM• Standard Deviation of

product DM


Accuracy vs. Precision

[email protected] 33

Plots taken from http://en.wikipedia.org

higher precision

–lower

accuracy

lower precision

–higher accuracy

Laboratory precision completed with 100% inspection of entire

production stream


Precision vs. Accuracy

• The intrinsic variance of the product is greater than the precision of the lab reference, so better have full sampling rather than super precision!

• „Better you measure all the fries all the time with reasonable precision rather than 1 out of 100.000 with ultra‐high precision!“

• It is about large scale trends in the whole product stream not about laboratory measurements of unrepresentatively small quantities!

• A RMS of e.g. 1 % for constant monitoring of the product throughout the entire input stream is already way better than what you can do with a precision of 0.1 % every 30 min on a spatially confined sample!

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Courtesy W. Märzinger


Outline

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• Recycling

• Food

• Pharmaceuticals

• Mining


Pharmaceuticals

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Pharmaceuticals

[email protected]


Pharmaceuticals

R^2=0.98RMSEC = 1.2 mg/cm2

[email protected]


Pharmaceuticals

R^2=0.98RMSEC = 1.2 mg/cm2

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mg/cm2

[email protected]


Personalized Medicine

Imprinted set of test specimens with ascending API concentration


Visible image

HSI imagePixels representing wavelength 1.3‐2.3µm

Intensity

unnormalizedspectra


Drying Processes


In‐situ measurement of moisture content of a sample during drying cycle(left: wet, right: dry)


Product Identification


Hyperspectral Imaging technology analyzes the chemical consistency and checks tablet integrity

Courtesy of RCPE


Chemical Composition

Chemical mapping of API content

Agglomerated API spots


1%

11%

5%

15%Courtesy of RCPE


Outline

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• Recycling

• Food

• Pharmaceuticals

• Mining


Sandstone/Slate Classification

[email protected]


Copper Ores Quantitative Analysis

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λ [px]

I [AU

]

[email protected]

%


Conclusion

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• HELIOS is a near infrared (NIR) hyperspectral imaging (HSI) smart camera suitable for fast inline applications

• A broad range of applications in food, recycling, miningand pharmaceuticals have been already realized and arerunning in the field.

• HSI has become an established and reliable technology in the field of sensor based sorting.

• Apart from mere sorting solutions the inference of spatiallyresolved, non‐invasive quantitative inline measurementsfor 100 % product control (PAT) have enormous potential adding to classical, precise but low sampling and invasive laboratory based techniques.


References

M. Kerschhaggl, W. Märzinger, E. Leitner et al. „Inline HSI food inspection and concentration measurements of pharmaceuticals – a report from an industrial environment.” Karlsruhe: KIT Scientific Publishing, Karlsruhe, 2013.

M. Kerschhaggl“Hyperspectral imagery for real‐time quantitative inline analysis,” Sensor‐Based Sorting 2014, GDMB Verlag GmbH, vol. 135, 2014.

M. Kerschhaggl“Hyperspectral Imaging as Process Analysis Technology for inline Applications. Laboratory Precision meets high Sampling Accuracy” Karlsruhe: KIT Scientific Publishing, Karlsruhe, 2015.

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Acknowledgments

M. Jeindl

W. Märzinger

E. Leitner

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www.evk.biz© EVK DI Kerschhaggl GmbH 2014Thank you for your attention50

Education

SLOPE 1st workshop - presentation 5