Projects completed in 2015

Agricultural automation: Mobile phone based analysis of images of plant leaves to give decision support in agriculture

Principal Investigator
Prof A. G. Ramakrishnan (Professor, Department of Computer Science and Automation)

Duration
16 August 2012 to 15 August 2015

The ultimate goal of agricultural automation is to manage the farm on a site‐by site basis. Traditional soil and plant sampling and analysis methods are very expensive, tedious, and time consuming for obtaining soil and crop parameters on a fine grid and at a short time scale. Sensors capable of gathering information from time to time are needed. They are particularly useful to measure parameters that vary faster in time, such as nitrogen and other nutrient content.

It is a technical solution which will actually be used in agriculture production systems to diagnose the problem, if any and suggest action based on the problem. Such monitoring is important in any production system to ensure quality and quantity in the product. Thus, with the help of suitable colour image processing of the leaf images, we can ensure quality and quantity output in any agriculture production system.


Cardiac arrhythmias: In silico studies in realistic mathematical models for cardiac tissue

Principal Investigator
Prof Rahul Pandit (Chairman, Division of Physical and Mathematical Sciences and Professor, Department of Physics)

Duration
16 August 2012 to 15 August 2015

Cardiac arrhythmias, such as ventricular tachycardia (VT) and ventricular fibrillation (VF), are responsible for approximately 17% of all deaths. Experimental studies suggest that rotating spiral or scroll waves of electrical activation in cardiac tissue are associated with VT, whereas, when these waves break to yield spiral- or scroll-wave turbulence, VT develops into life-threatening VF. In the absence of medical intervention, this makes the heart incapable of pumping blood and a patient dies roughly two-and-a-half minutes after the initiation of VF. Thus, studies of spiral- and scroll-wave dynamics in cardiac tissue pose important challenges for in vivo and in vitro experimental studies and for in silico numerical studies of mathematical models for cardiac tissue. Furthermore, the study of these waves and their eventual elimination from cardiac tissue is a problem of central importance in biomedical engineering and biophysical science.

We have been studying such spiral and scroll waves and their control in state-of-the-art mathematical models for human cardiac tissue; these models include (a) cardiac myocytes, (b) fibroblasts, one of the major non-myocyte cells in heart tissue, (c) cells that display earlyafterdepolarizations (EADs), because they are not normal, and (d) Purkinje fibers, a special conduction system that carries electrical impulses from the bundle of His to the interior of ventricular tissue. Our goal in this project has been the development of low-amplitude defibrillation schemes for the elimination of VT and VF.

Project Publications

1.

Zimik, Soling; Vandersickel, Nele; Nayak, Alok Ranjan; Panfilov, Alexander V; Pandit, Rahul

A comparative study of early afterdepolarization-mediated fibrillation in two mathematical models for human ventricular cells Journal Article

PLoS ONE, 10 (6), 2015.

Abstract | BibTeX | Links:

2.

Nayak, Alok Ranjan; Pandit, Rahul

The effects of fibroblasts on wave dynamics in a mathematical model for human ventricular tissue Conference

Proceedings of the 15th International Symposium on Mathematical and Computational Biology (BIOMAT), India, 2015, ISBN: 978-981-4667-93-7.

Abstract | BibTeX

3.

Nayak, Alok Ranjan; Pandit, Rahul

Turbulent states and their transitions in mathematical models for ventricular tissue: The effects of random interstitial fibroblasts Journal Article

Physical Review E, 92 (3), 2015.

Abstract | BibTeX | Links:

4.

Vandersickel, Nele; Kazbanov, Ivan K; Nuitermans, Anita; Weise, Louis D; Pandit, Rahul; Panfilov, Alexander V

A study of early afterdepolarizations in a model for human ventricular tissue Journal Article

PLoS ONE, 9 (1), 2014.

BibTeX | Links:

5.

Nayak, Alok Ranjan; Pandit, Rahul

Spiral-wave dynamics in ionically realistic mathematical models for human ventricular tissue: The effects of periodic deformation Journal Article

Frontiers in Physiology, 5 , 2014.

Abstract | BibTeX | Links:

6.

Majumder, Rupamanjari; Pandit, Rahul; Panfilov, Alexander V

Turbulent electrical activity at sharp-edged inexcitable obstacles in a model for human cardiac tissue Journal Article

American Journal of Physiology: Heart and Circulatory Physiology, 307 (7), pp. 1024-1035, 2014.

Abstract | BibTeX | Links:

7.

Nayak, Alok Ranjan; Shajahan, T K; Panfilov, Alexander V; Pandit, Rahul

Spiral-wave dynamics in a mathematical model of human ventricular tissue with myocytes and fibroblasts Journal Article

PloS ONE, 8 , 2013.

Abstract | BibTeX | Links:

8.

Majumder, Rupamanjari; Nayak, Alok Ranjan; Pandit, Rahul

Nonequilibrium arrhythmic states and transitions in a mathematical model for diffuse fibrosis in human cardiac tissue Journal Article

PLoS ONE, 2012.

Abstract | BibTeX | Links:


Computer processing of wrist pulse signals acquired using fiber-optic techniques for healthcare appliances

Principal Investigator
Prof Talabattula Srinivas (Associate Professor, Department of Electrical Communication Engineering)

Duration
16 August 2012 to 15 August 2015

Surveys have revealed that cardio vascular diseases are leading the cause of death in the world. From this point of view, a sensor to record the pulse and a method to subsequently process it using computers have great potential in the medical field. The need here was to focus our research on the development of new methods and devices for monitoring and studying cardiovascular diseases. One of the traditional indicators of the condition of the human cardiovascular system is cardio vascular pulsation. Different cardiovascular diseases can be diagnosed depending on the shape, amplitude and rhythm of this pulsation.

The main objective of the project was to develop recording and processing techniques for wrist pulse signals using conventional and fiber optic sensors. Initially the focus was on processing of signals acquired using conventional sensors. Miniature optic sensors were studied subsequently.


Control and prevention of hospital acquired infections

Principal Investigator
Dr T. V. Prabhakar (Principal Research Scientist, Zero Energy Networks Laboratory)

Duration
12 May 2014 to 11 October 2015

Infection control measures through sanitation protocols such as hand washing are key to controlling hospital-acquired infections, which is an enormous health hazard to patients as well as the hospital community at large. A simple, low-cost, scalable monitoring solution based on a ‘crowd-sourced’ architecture has been developed to ensure adequate thoroughness of disinfection. A combination of low-cost beacon tags and mobile phones deployed at multiple locations in themedical facility (in the proximity of ICU beds for instance) to compute location information for tracking the movements of hospital personnel, will be used in conjunction with integrated infection control models and state-following algorithms.

Project Publications

1.

Sridhar, Sabarish; Misra, Prasant; Gill, Gurinder Singh; Warrior, Jay

CheepSync: A time synchronization service for resource constrained bluetooth low energy advertisers Journal Article

IEEE Communications Magazine, 54 (1), pp. 136-143, 2016.

Abstract | BibTeX | Links:

2.

Venugopalakrishna, Y R; Murthy, Chandra R; Misra, Prasant; Warrior, Jay

A column matching based algorithm for target self-localization using beacon nodes Conference

Proceedings of the 14th International Conference on Information Processing in Sensor Networks (IPSN), USA, 2015.

Abstract | BibTeX | Links:

3.

Sridhar, Sabarish; Misra, Prasant; Warrior, Jay

CheepSync: A time synchronization service for resource constrained bluetooth low energy advertisers Conference

Proceedings of the 14th International Conference on Information Processing in Sensor Networks (IPSN), USA, 2015.

Abstract | BibTeX | Links:

4.

Misra, Prasant; Rajaraman, Vasanth; Aishwarya, S N; Dwivedi, Bharat; Warrior, Jay

CleanHands: An integrated monitoring system for control of hospital acquired infections Conference

Proceedings of the 14th International Conference on Information Processing in Sensor Networks (IPSN), USA, 2015.

Abstract | BibTeX | Links:

5.

Rajaraman, Vasanth; Misra, Prasant; Dhotrad, Kumaresh; Warrior, Jay

Enabling Plug-n-Play for the Internet of Things with self describing devices Conference

Proceedings of the 14th International Conference on Information Processing in Sensor Networks (IPSN), USA, 2015.

Abstract | BibTeX | Links:

6.

Govindarajan, Nithyashri; Simmhan, Yogesh; Jamadagni, Nitin; Misra, Prasant

Event processing across edge and the cloud for Internet of Things applications Conference

Proceedings of the 20th International Conference on Management of Data (COMAD), India, 2014.

Abstract | BibTeX

Patent Application
Warrior, Jay; Prabhakar, T. V.
Variable range beacon
Indian Patent Application No. 5029/CHE/2014


Cyber surgery and remote patient care

Principal Investigator
Prof Ashitava Ghosal (Professor, Department of Mechanical Engineering)

Duration
16 August 2012 to 15 August 2015

Endoscopy is extensively used in examination and diagnosis of diseases in the gastrointestinal (GI) tract.  Current endoscopy practice is primarily related to imaging, diagnosis and to a small extent in retrieving tissue for biopsy. There is an acute need of training for endoscopy on virtual (simulator) systems before an endoscopist can be allowed to examine patients. Although a few such systems exist, they are typically very expensive, and all do not give realistic virtual environment, i.e. do not provide haptics/force feedback and the surgical tools for minimally invasive surgery (MIS) cannot be positioned very accurately. The development of actuated end-effectors for use in endoscopes and MIS, imaging, visualization, and mechanical characterization of the GI tract and assisted identification and close examination of abnormal parts have been goals of this project. This project addressed these issues in terms of basic research and developing cost-effective laboratory prototypes.

Project Publications

30 entries « 1 of 3 »
1.

Sekuboyina, Anjany Kumar; Devarakonda, Surya Teja; Seelamantula, Chandra Sekhar

A convolutional neural network approach for abnormality detection in wireless capsule endoscopy Conference Forthcoming

Proceedings of the 2017 IEEE International Symposium on Biomedical Imaging, 18-21 April 2017, Melbourne (Australia), Forthcoming.

Abstract | BibTeX

2.

Singh, Puneet; Jana, Sumitash; Ghosal, Ashitava; Murthy, Aditya

Exploration of joint redundancy but not task space variability facilitates supervised motor learning Journal Article

Proceedings of the National Academy of Sciences of the United States of America, 113 (50), pp. 14414-14419, 2016.

Abstract | BibTeX | Links:

3.

Katti, Anirudh N; Chakravarthy, Shanthanu; Ananthasuresh, G K

A haptic device for entry into the throat in endoscopy Conference

Proceedings of the 2015 TrC-IFToMM Symposium on the Theory of Machines and Mechanisms, Turkey, 2015.

Abstract | BibTeX

4.

Acharya, Aditya; Natarajan, Vijay

A parallel and memory efficient algorithm for constructing the contour tree Conference

Proceedings of the 2015 IEEE Pacific Visualization Symposium (PacificVis), China, 2015.

Abstract | BibTeX | Links:

5.

Venkatesh, Manasij; Seelamantula, Chandra Sekhar

Directional bilateral filters Conference

Proceedings of the 39th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Italy, 2015.

Abstract | BibTeX | Links:

6.

Narayanan, Vidya; Thomas, Dilip Mathew; Natarajan, Vijay

Distance between extremum graphs Conference

Proceedings of the 2015 IEEE Pacific Visualization Symposium (PacificVis), China, 2015.

Abstract | BibTeX | Links:

7.

Seelamantula, Chandra Sekhar; Blu, Thierry

Image denoising in multiplicative noise Conference

Proceedings of the 2015 IEEE International Conference on Image Processing (ICIP), Canada, 2015.

Abstract | BibTeX | Links:

8.

Ashwin, K P; Don, Jose P; Ghosal, Ashitava

Modeling and analysis of a flexible end-effector for actuating endoscopic catheters Conference

Proceedings of the 14th IFToMM World Congress, Taiwan, 2015.

Abstract | BibTeX | Links:

9.

Menon, Midhun Sreekumar; Ghosal, Ashitava

Obstacle avoidance for snake robots and one dimensional flexible bodies using optimization Conference

Proceedings of the 14th IFToMM World Congress, Taiwan, 2015.

Abstract | BibTeX | Links:

10.

Kishan, Harini; Seelamantula, Chandra Sekhar

Patch-based and multiresolution optimum bilateral filters for denoising images corrupted by Gaussian noise Journal Article

Journal of Electronic Imaging, 24 (5), 2015.

Abstract | BibTeX | Links:

30 entries « 1 of 3 »

Patent Applications

  1. Chakravarthy, Shanthanu; Rao, Ashwin M.; Ananthasuresh, G. K.
    A haptic device for endoscopy
    Indian Patent Application No. 3439/CHE/2014 (26.02.16)
    PTC Application No. PCT/IB2015/055251
  2. Katti, Anirudh; Chakravarthy, Shanthanu; Ananthasuresh, G. K.
    A single-layer compliant mechanism for reversible motion between circumferential and radial directions
    Indian Patent Application No. 1248/CHE/2015

Fiber Bragg Grating sensors for distributed bio-chemical sensing

Principal Investigator
Prof Manoj Varma (Associate Professor, Centre for Nano Science and Engineering)

Duration
16 August 2012 to 15 August 2015

The main objective of this project has been the development of a personal health diagnostic device based on a distributed sensor based on an array of individual sensing elements that have been functionalized in different ways (polyelectrolyte coatings with multiple receptors). The resulting platform is label-free, i.e, no fluorophores are required to generate the desired signal resulting in simplified sensing protocols. The sensing element is an etched Fiber Bragg grating (FBG) which is a type of distributed Bragg reflector along a short segment of an optical fiber whose outer cladding has been removed for higher sensitivity. This approach of exploiting the large multiplexing capability of FBGs coupled with Remote Neonatal Monitoring and Intervention Fiber Bragg Grating Sensors for distributed bio-chemical sensing two novel techniques for incorporating a wide spectrum of functionalization receptors is able to yield high specificities. Recently, this platform has been used for detecting various biomarkers for diagnosing cardiovascular diseases.

Project Publications

24 entries « 1 of 3 »
1.

Kumar, Saurabh; Shrikanth, Venkoba; Amrutur, Bharadwaj; Asokan, Sundarrajan; Bobji, Musuvathi S

Detecting stages of needle penetration into tissues through force estimation at needle tip using Fiber Bragg grating sensors Journal Article

Journal of Biomedical Optics, 21 (12), 2016.

Abstract | BibTeX | Links:

2.

Raza, Shahid; Misra, Prasant; He, Zhitao; Voigt, Thiemo

Bluetooth smart: An enabling technology for the Internet of Things Conference

Proceedings of the IEEE 11th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), United Arab Emirates, 2015.

Abstract | BibTeX | Links:

3.

Chetana, K; Prasad, Arudi Guru S; Vikranth, H N; Varun, H; Omkar, Subbarama N; Asokan, Sundarrajan

Fiber Braggs Grating sensor based instrumentation to evaluate postural balance and stability on an unstable platform Journal Article

International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering, 9 (1), pp. 96-101, 2015.

Abstract | BibTeX | Links:

4.

Sridevi, S; Vasu, K S; Sampath, S; Asokan, Sundarrajan; Sood, Ajay K

Optical detection of glucose and glycated hemoglobin using etched fiber Bragg gratings coated with functionalized reduced graphene oxide Journal Article

Journal of Biophotonics, 9 (7), pp. 760-769, 2015.

Abstract | BibTeX | Links:

5.

Umesh, Sharath; Padme, Srivani; Ambastha, Shikha; Anand, Kalegowda; Asokan, Sundarrajan

Pulse transit time differential measurement by Fiber Bragg Grating pulse recorder Journal Article

Journal of Biomedical Optics, 20 (5), 2015.

Abstract | BibTeX | Links:

6.

Kumar, Saurabh; Chakravarthy, Shanthanu; Ananthasuresh, G K; Amrutur, Bharadwaj; Asokan, Sundarrajan

Shape estimation for flexible medical instruments: An approach based on FBG sensors embedded in a biocompatible polymer filled tube Conference

Proceedings of the 2015 IEEE/RSJ IROS Workshop on Navigation and Actuation of Flexible Instruments for Medical Applications (NAFIMA), Germany, 2015.

Abstract | BibTeX | Links:

7.

Shivananju, Bannur Nanjunda; Asokan, Sundarrajan; Misra, Abha

Study on effect of optical wavelength on photo induced strain sensitivity in carbon nanotubes using Fiber Bragg Grating Journal Article

Journal of Physics D: Applied Physics, 48 (27), 2015.

Abstract | BibTeX | Links:

8.

Sridevi, S; Vasu, K S; Bath, Navakanta; Asokan, Sundarrajan; Sood, Ajay K

Ultra sensitive NO2 gas detection using the reduced graphene oxide coated etched Fiber Bragg Gratings Journal Article

Sensors and Actuators B: Chemical, 223 , pp. 481-486, 2015.

Abstract | BibTeX | Links:

9.

Shivananju, Bannur Nanjunda; Yamdagni, Sumeet; Fazuldeen, Ruknudeen; Kumar, Anakkat Koyilothu Sarin; Nithin, Shamraju Purushotham; Varma, Manoj; Asokan, Sundarrajan

Highly sensitive carbon nanotubes coated etched Fiber Bragg Grating sensor for humidity sensing Journal Article

IEEE Sensors Journal, 14 (8), pp. 2615-2619, 2014.

Abstract | BibTeX | Links:

10.

Shivananju, Bannur Nanjunda; Suri, Ashish; Asokan, Sundarrajan; Misra, Abha

Monitoring of ultraviolet pulse rate dependent photomechanical actuation in carbon nanotubes using Fiber Bragg Gratings Journal Article

Applied Physics Letters, 104 (1), 2014.

Abstract | BibTeX | Links:

24 entries « 1 of 3 »

Patent Applications

  1. Asokan, Sundarrajan; Umesh, Sharath; Raju, Sukreet; Girish, Apoorva
    Apparatus and method to measure blood pressure using Fiber Bragg Grating sensor

    Indian Patent Application No. 4989/CHE/2012 (06.05.16)
  2. Vasu, Kalangi Siddeswara; Sridevi, S.; Asokan, Sundarrajan; Jayaraman, Narayanaswamy; Sood, Ajay K.
    Optical biosensors having enhanced sensitivity
    Indian Patent Application No. 719/CHE/2013 (14.08.15)
    PCT Application No. PCT/IB2014/058880
  3. Asokan, Sundarrajan; Umesh, Sharath; Chiplunkar, Swetha
    Measurement of arterial compliance using Fiber Bragg Grating pulse recorder
    Indian Patent Application No. 457/CHE/2014 (07.08.15)
  4. Vasu, Kalangi Siddeswara; Sridevi, S.; Asokan, Sundarrajan; Sood, Ajay K.
    Optical sensor, methods and applications thereof
    Indian Patent Application No. 6111/CHE/2014

Formal analysis of CPS protocols and software

Principal Investigator
Prof Aditya Kanade (Associate Professor, Department of Computer Science and Automation)

Duration
16 August 2012 to 15 August 2015

Communication protocols and system software form critical components of cyber-physical systems. The concurrent and distributed nature of different components of a protocol make it difficult to design and debug the protocols. In addition, mechanisms for providing reliable communication over unreliable communication media (e.g. checksums,sliding window protocols) make the protocols intricate. This project aimed at formal modeling and analysis of protocols, in particular, protocols that provide reliable retransmission capabilities over noisy channels.

System software plays a significant role in cyber-physical systems by gluing together different components like sensors, controllers, actuators, and end-user devices. Control algorithms are also commonly implemented in software. The complexity of these software components make them susceptible to bugs. This project focussed at designing techniques to detect, localize, and fix bugs in programs. In particular, we explored combinations of dynamic analysis, symbolic reasoning, and machine learning to develop techniques for debugging and repair of programs.

Project Publications

1.

Thakkar, Jay; Kanade, Aditya

Non-deterministic transducer models of retransmission protocols over noisy channels Journal Article

Information Processing Letters, 115 (9), pp. 694-698, 2015.

Abstract | BibTeX | Links:

2.

Santhiar, Anirudh; Pandita, Omesh; Kanade, Aditya

Mining unit tests for discovery and migration of math APIs Journal Article

ACM Transactions on Software Engineering and Methodology (TOSEM), 24 (1), 2014.

Abstract | BibTeX | Links:

3.

Kaleeswaran, Shalini; Tulsa, Varun; Kanade, Aditya; Orso, Alessandro

MintHint: Automated synthesis of repair hints Conference

Proceedings of the 36th International Conference on Software Engineering (ICSE), India, 2014.

Abstract | BibTeX | Links:

4.

Santhiar, Anirudh; Pandita, Omesh; Kanade, Aditya

Discovering math APIs by mining unit tests Conference

Proceedings of the 16th international conference on Fundamental Approaches to Software Engineering (FASE), Italy, 2013.

Abstract | BibTeX | Links:

5.

Thakkar, Jay; Kanade, Aditya; Alur, Rajeev

Transducer-based algorithmic verification of retransmission protocols over noisy channels Conference

Proceedings of the IFIP Joint International Conference on Formal Techniques for Distributed Systems (33rd FORTE/15th FMOODS), Italy, 2013.

Abstract | BibTeX | Links:


Low-cost, optical detection of DNA for HPV detection in urine

Principal Investigator
Prof Manoj Varma (Associate Professor, Centre for Nano Science and Engineering)

Duration
1 February 2015 to 30 September 2015

Project Publications

1.

Kumawat, Nityanand; Pal, Parama; Varma, Manoj

Quality monitoring of diesel exhaust fluid in vehicles using diffractive interference sensors Conference

Proceedings of the 2014 IEEE Sensors Conference, Spain, 2014.

Abstract | BibTeX | Links:


Precision farming model for peri-urban agriculture: Technological interventions and innovations to enhance the input use efficiency

Principal Investigator
Prof Jaywant H. Arakeri (Professor, Department of Mechanical Engineering)

Duration
16 August 2012 to 15 August 2015

The project is a collaborative effort three institutes: IISc, the University of Agricultural Sciences, Bangalore, and Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore. UAS has allotted 15 guntas of land for erecting four polyhouses and a field laboratory.  An experiment was completed with baby corn (which has a growth period of two months) to optimize the growth conditions inside the polyhouse, deployment of sensors, deployment of micro irrigation/precision delivery systems for water and fertilizers. The existing technologies and their limitations could be understood through design experiments with Capsicum as test crop. The results of the experiments in the standard polyhouse gave inputs for new designs for the climatic conditions obtained in Bangalore.

Technical details on fabrication of a new type of controlled growth chamber have been discussed with engineers of a Chennai based company. Studies have been carried out to optimize the sensors to be used in the polyhouse and for plant image capture. A mini-lysimeter was developed to measure continuously transpiration rates from single plants. The mechanism of clogging of emitters/actuators was researched by examining several emitters/actuators collected from the field. An emitter test set-up to study clogging, obtain pressure-flow characteristics and develop new emitters was set up. A new type of intermittent emitter is was designed as part of an MDes project of Centre for Product Design and Manufacture (CPDM).


Remote neonatal monitoring and intervention

Principal Investigator
Prof Bharadwaj Amrutur (Chairman, Robert Bosch Centre for Cyber-Physical Systems)

Duration
16 August 2012 to 15 August 2015

A robust, easy-to-use prototype device has been developed for continuous, realtime monitoring of the core body temperatures of neonates. The design for this device has factored in considerations for ease-of-use in rural settings with minimal infrastructure. The primary utility of this wearable device is to be able to raise triggers/alarms for prompting appropriate interventions in the case of the neonate’s body temperature exceeding limits predetermined by clinicians (e.g. in the case of hypothermia or sepsis). Recent efforts have been directed into widening the sensing scope of the device by incorporating functionalities such as breathing rate determination, oxygen saturation (SpO2) detection as well as electrocardiogram (ECG) measurements.

Project Publications

1.

Gubbi, Sagar Venkatesh; Amrutur, Bharadwaj

Adaptive pulse width control and sampling for pulse oximetry Journal Article

IEEE Transactions on Biomedical Circuits and Systems, 9 (2), pp. 272-283, 2015.

Abstract | BibTeX | Links:

2.

Prabhakar, T V; Mysore, Ujwal; Saini, Uday; Vinoy, K J; Amrutur, Bharadwaj

NFC for pervasive healthcare monitoring Conference

Proceedings of the 28th International Conference on VLSI Design and the 14th International Conference on Embedded Systems, India, 2015.

Abstract | BibTeX | Links:

3.

Jeyashankar, Karthik Ramkumar; Mahalley, Makrand; Amrutur, Bharadwaj

A time-based low voltage body temperature monitoring unit Conference

Proceedings of the 27th International Conference on VLSI Design and the 13th International Conference on Embedded Systems, India, 2014.

Abstract | BibTeX | Links:

4.

Kumar, Saurabh; Rao, Hiteshwar; Amrutur, Bharadwaj; Asokan, Sundarrajan

Continuous core body temperature estimation via surface temperature measurements using wearable sensors - Is it feasible? Conference

Proceedings of the 7th International Conference on Biomedical Electronics and Devices, France, 2014.

Abstract | BibTeX | Links:

5.

Rao, Hiteshwar; Saxena, Dhruv; Kumar, Saurabh; Gubbi, Sagar Venkatesh; Amrutur, Bharadwaj; Mony, Prem; Thankachan, Prasanth; Shankar, Kiruba; Rao, Suman; Bhat, Swarnarekha

Low power remote neonatal temperature monitoring device Conference

Proceedings of the 7th International Conference on Biomedical Electronics and Devices, France, 2014.

Abstract | BibTeX | Links:

6.

Alex, Doney; Gorur, Pushkar; Amrutur, Bharadwaj; Ramakrishnan, Kalpathi

LampTop: Touch detection for a projector-camera system based on shape classification Conference

Proceedings of the 2013 ACM International conference on Interactive Tabletops and Surfaces (ITS), United Kingdom, 2013.

Abstract | BibTeX | Links:

Patent Applications

  1. Gubbi, Sagar Venkatesh; Amrutur, Bharadwaj
    Low power pulse oximeter and a method thereof
    Indian Patent Application No. 1979/CHE/2014 (01.01.16)
  2. Amrutur, Bharadwaj; Rao, Hiteshwar; Saxena, Dhruv; Mony, Prem
    A method and a device for monitoring physiological characteristics with adaptive power management
    Indian Patent Application No. 4499/CHE/2014 (01.07.16)

Sensor system for monitoring stroke patients in rehabilitation

Principal Investigator
Prof K. Gopinath (Professor, Department of Computer Science and Automation)

Duration
16 August 2012 to 15 August 2015

The project’s original aim was to enable stroke patients in their rehabilitation by providing an interesting way to perform the required exercises. A stroke patient, during his/her rehabilitation period is required to perform regular, repetitive exercises, especially some predefined movements of the affected region, to gain back the functionality of those regions. However, these exercises are often highly repetitive in nature and may become boring over the time, because of which the patient may stop doing it. Instead, the basic idea was to make such movements part of some video game(s) that would have the desired motions (exercise movements). We also planned to capture the movement of the patient during these exercises by placing sensors on the moving body parts and provide feedback to the patient or the doctor, either off-line or, if possible, on-line regarding the patient performance.

In the process of formally defining the problem, we spoke to medical specialists who work in related areas. During these discussions it became clear that the Human Gait Analysis is a far more pressing problem. Given its immediate need, the cost of doing so can be reduced substantially. Also, from the point of validation, there are well defined standards available for Gait Analysis, like Optical Gait Analysis, which can be used for evaluating any new system.

Given the commonality of the hardware for our original problem and Human Gait Analysis and due to lack of data for the original problem, we therefore decided to shift our attention to Human Gait Analysis. Based on our discussions with specialists, our new goals was to calculate the clinically important joint angles (knee joint angle, ankle joint angle, hip joint angle, etc.) using IMU Sensors (Inertial Measurement Unit) and to validate the results using an Optical system (BIMRA Gait Lab). If the angles produced by the IMU sensors is comparable with that produced by Optical system, then potentially, one can use IMU sensors system to do Gait Analysis at a much lower cost.

Project Publications

1.

Sukumar, Poorna Talked; Gopinath, K

Human activity recognition by matching curve shapes Conference

Proceedings of the 21st International Conference of Neural Information Processing (ICONIP), Malaysia , Lecture Notes in Computer Science 2014.

Abstract | BibTeX | Links:

2.

Sukumar, Poorna Talked; Gopinath, K

Vision-based typing interface for chording input with keystroke detection using kalman filter Conference

Proceedings of the 11th Asia Pacific Conference on Computer Human Interaction (APCHI), India, 2013.

Abstract | BibTeX | Links:


Simulation environment with active feedback for epidural procedures

Principal Investigator
Prof M. S. Bobji (Assistant Professor, Department of Mechanical Engineering)

Duration
16 August 2012 to 15 August 2015

Epidural procedures are routinely performed by trained physicians for anesthesia and treatment. It is a procedure that requires considerable skill on the part of the physician to correctly place the needle and catheter at the exact position in the epidural space as puncturing or damaging the dura mater may lead to side effects like headache or even paralysis. Training on cadavers is one way to provide necessary skills in the procedure. The current project involved the development of a training system to realistically provide a simulation environment with a haptic feedback and immersive visualisation. Some key features of the project are development of custom sensors and mechanisms and an intelligent software engine to provide measurements, feedback and operations of the training environment.

Project Publications

1.

Shrikanth, V; Simha, K R Y; Bobji, Musuvathi S

Frictional force measurement during stick-slip motion of a piezoelectric walker Journal Article

Proceedings of the IEEE International Conference on Industrial Technology (ICIT), Spain, (1463-1468), 2015.

Abstract | BibTeX | Links:


Smart transportation and mobility solutions

Principal Investigator
Prof T. G. Sitharam (Senior Professor, Department of Civil Engineering)

Duration
1 August 2013 to 31 July 2015

Integrated Urban Transportation Planning includes collaborative planning of land use and transport, integration of various modes of transport in terms of infrastructure like coexisting terminals for public transportation and service like having common fare payment systems etc.

Intelligent Transport System (ITS) is another promising and prevalent means of improving mobility in an optimal manner, ITS provides very efficient and smooth coordination among functioning of various infrastructure elements that constitutes the transport system. It is majorly divided into Advanced Traffic Management System (ATMS), Advanced Traveler Management System (ATIS), and Advanced Public Transport Systems (APTS). All three of these involve utilization of telematics. Real time estimation of traffic stream characteristics such as traffic flow, speed and traffic density act as inputs to all three and helps in unparalleled enhancement of mobility.

Project Publications

1.

Prabuchandran, K J; Bhatnagar, Shalabh; Borkar, Vivek S

An actor-critic algorithm based on Grassmanian search Conference

Proceedings of the 53rd IEEE Annual Conference on Decision and Control (CDC), USA, 2014.

Abstract | BibTeX | Links:

2.

Prabuchandran, K J; N., Hemanth Kumar A; Bhatnagar, Shalabh

Multi-agent reinforcement learning for traffic signal control Conference

Proceedings of the 17th IEEE International Conference on Intelligent Transportation Systems (ITSC), China, 2014.

Abstract | BibTeX | Links:


SPMU based solar water pump and smart controller

Principal Investigator
Prof L. Umanand (Professor, Department of Electronic Systems Engineering)

Duration
1 May 2014 to 31 October 2015

Solar pump units provide varying power to pumps with varying solar isolation. The solar panels are also by about 25% oversized to accommodate wide seasonal variations. As a result, the pump rarely runs at full capacity, and thereby, subjects the pump, the pump motor and motor driver to run at lower efficiencies most of the time.

We developed a new solar pump system with an intelligent solar power management unit (SPMU) to help regulate constant power to the pump. The unit diverts solar power to battery whenever it is greater than the pump power requirement, and also supplements the solar power with battery power whenever it is lesser than the pump power requirement. The unit features “maximum power point tracking (MPPT)” to harness maximum power from the solar panel. The system also (uniquely) provides the capability to measure the total and time profile of water pumped, and also supports the collection of inline Total Dissolved Solids (TDS), a critical water quality parameter that is necessary to determine appropriate watering levels.

Patent Application
Warrior, Jay; Sekhar, Muddu; Misra, Prasant
Smart solar water pump system
Indian Patent Application No. 3578/CHE/2014


Studies into impact of dust and PV temperature on PV system (performance) efficiency in tropical regions

Principal Investigator
Prof Monto Mani (Associate Professor, Centre for Sustainable Technologies and Centre for Product Design and Manufacturing)

Duration
16 August 2012 to 15 August 2015

Clean energy technologies are an imminent necessity to sustain modern civilization and ensuring environmental vitality for future generations. While solar photovoltaics (PV) for clean electricity generation is promising, ensuring its optimum performance is crucial for sustainability. Often, onsite parameters such as dust-settlement and ambient climatic factors have a significant bearing on PV system output, including the dependence on clean-water for maintenance. Despite enormous ongoing efforts to devise novel materials for higher PV yield and efficiency, there is inadequate study dealing with onsite factors. Dust deposition and operating PV temperatures are acute considerations in tropical regions such as India. Research and development, under the current project, investigated the impact of dust settlement, associated water-based cleaning cycles and operating PV temperature profiles on PV system output (efficiency) for various PV material and design configurations. Further, to minimize use of clean water for maintenance, given site-specific conditions, an effort was made to evolve a methodology to identify appropriate cleaning mechanisms. Further, results of the study paved way for research in other domains of material sciences such as development of dust repelling coatings and self-cleaning glasses.

Project Publications

1.

Mani, Monto; Aaditya, Gayathri; Balaji, N C

Appreciating performance of a BIPV lab in Bangalore (India) Conference

Proceedings of the 32nd European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2016), Munich (Germany), 2016.

Abstract | BibTeX | Links:

2.

Pillai, Rohitkumar; Aaditya, Gayathri; Mani, Monto; Ramamurthy, Praveen

Cell (module) temperature regulated performance of a building integrated photovoltaic system in tropical conditions Journal Article

Renewable Energy, 72 , pp. 140-148, 2016.

Abstract | BibTeX | Links:

3.

Khanum, Khadija K; Rao, Abhishek; Balaji, N C; Mani, Monto; Ramamurthy, Praveen

Performance evaluation for PV systems to synergistic influences of dust, wind and panel temperatures: Spectral insight Conference

Proceedings of the 43rd IEEE Photovoltaic Specialists Conference (PVSC 2016), Portland (USA), 2016.

Abstract | BibTeX | Links:

4.

Khanum, Khadija K; Mani, Monto; Ramamurthy, Praveen

Spectral studies investigating the influence of dust on solar transmittance Conference

Proceedings of the 32nd European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2016), Munich (Germany), 2016.

Abstract | BibTeX | Links:

5.

Khadija, Khadija K; Shruti, Soni; Ramamurthy, Praveen; Mani, Monto

Evaluating effectiveness of non-water based cleaning mechanisms for PV systems Conference

Proceedings of the 3rd South African Solar Energy Conference (SASEC2015), 2015.

Abstract | BibTeX | Links:

6.

Rao, Abhishek; Pillai, Rohitkumar; Mani, Monto; Ramamurthy, Praveen

An experimental investigation into the interplay of wind, dust and temperature on photovoltaic performance in tropical conditions Conference

Proceedings of the 12th International Conference on Sustainable Energy Technologies (SET), China, 2013.

BibTeX

7.

Rao, Abhishek; Mani, Monto

Evaluating the nature and significance of ambient wind regimes on solar photovoltaic system performance Conference

Proceedings of the 1st IBPSA Conference on Building Simulation Applications (IBPSA-BSA), Italy, 2013.

Abstract | BibTeX | Links:

8.

Rao, Abhishek; Pillai, Rohitkumar; Mani, Monto; Ramamurthy, Praveen

Influence of dust deposition on photovoltaic panel performance Conference

Proceedings of the 4th International Conference on Advances in Energy Research (ICAER), India, 2013.

Abstract | BibTeX | Links:

9.

Pillai, Rohitkumar; Rao, Abhishek; Mani, Monto; Ramamurthy, Praveen

Understanding near sunrise and sunset PV system behaviour to identify measures to maximize effective energy yield Conference

Proceedings of the 12th International Conference on Sustainable Energy Technologies (SET), China, 2013.

BibTeX


Verified model of real–time operating systems for multi-core processors

Principal Investigator
Prof Deepak D’Souza (Associate Professor, Department of Computer Science and Automation)

Duration
16 August 2012 to 15 August 2015

Real-time operating systems (RTOS) play a central role in embedded system applications, and will likely do so for cyber-physical systems in the future. Given the paradigm shift towards multi-core processors, most embedded processors are likely to be multi-core ones in the near future. Today’s RTOS that are typically designed to be run on uni-processors will need to be re-designed and implemented for multi-core processors. Reasoning about the correctness of embedded applications is impossible without a precise specification and proof of correctness of the RTOS itself.

In this project we used the open source Free-RTOS operating system as an example. To begin with we defined a precise specification (for example in a formal modelling language like Z notation or Event B) of the intended behaviour of a Free-RTOS-like OS on a multicore processor. Secondly, we proposed a multicore implementation of Free-RTOS. Finally we investigated techniques to prove the correctness of this implementation with respect to the top-level specification.

Project Publications

1.

Divakaran, Sumesh; D'Souza, Deepak; Kushwah, Anirudh; Sampath, Prahladavaradan; Sridhar, Nigamanth; Woodcock, Jim

Refinement-based verification of the FreeRTOS scheduler in VCC Conference

Proceedings of the 17th International Conference on Formal Engineering Methods (ICFEM), France, Lecture Notes in Computer Science 2015.

Abstract | BibTeX | Links:

2.

Chandrasekaran, Prakash; B., Shibu Kumar K; Minz, Remish L; D'Souza, Deepak; Meshram, Lomesh

A multi-core version of FreeRTOS verified for datarace and deadlock freedom Conference

Proceedings of the 12th ACM/IEEE International Conference on Formal Methods and Models for Codesign (MEMOCODE), Switzerland, 2014.

Abstract | BibTeX | Links:

3.

Divakaran, Sumesh; D'Souza, Deepak; Sridhar, Nigamanth

Efficient refinement checking in VCC Conference

Proceedings of the 6th Working Conference on Verified Software: Theories, Tools and Experiments (VSTTE), Austria, Lecture Notes in Computer ScienceLecture Notes in Computer Science 2014.

Abstract | BibTeX | Links:


Zero energy smart building

Principal Investigator
Prof Joy Kuri (Professor, Department of Electronic System Engineering)

Duration
16 August 2012 to 15 August 2015

The Zero Energy Building project had two principal objectives: (a) To use renewable energy sources to meet, at least in part, the energy requirements of a building, and (b) to retrofit this capability to an existing building, with no structural changes allowed. A two-pronged approach was used: To exploit solar photovoltaics, and to implement load management to reduce energy demand.

The solution incorporated several novel features. On the supply side, the traditional inductor stage used in interfacing the transformer to the grid was eliminated completely — instead, the leakage inductance of the transformer was utilized; this lead to significant savings in weight and space. On the demand side, load management is the key requirement, and an elaborate measurement and control infrastructure has been developed. This consists of Load Management Units (LMU-s, one in each lab or office) that provide aggregate measurement and control functionality, a smart meter for pluggable loads with communication and storage capabilities called the Joule Jotter, and a Master Energy Consumption Scheduler, that collects measurements from LMU-s and Joule Jotters and makes load scheduling decisions, taking into account time-of-day energy prices, available solar energy as well as user convenience.

LMU-s and the master communicate using the DNP v3.0 protocol. Keeping the goal of retrofitting in mind, a Smart Switch that can be substituted for the traditional 2-terminal wall switch, has been developed. The Smart Switch can respond to commands from a remote controller sent via the power line (PLC) or via a wireless link. The challenge here is to provide power to the electronics inside the switch from the two terminals – line and load point – that are available at the switch; in particular, the neutral is not available.

The complete solution was designed and implemented in the Department of Electronic Systems Engineering, Indian Institute of Science Bangalore. It is operational and provides an average of 70 KWh of energy per day.

Project Publications

1.

Karthik, A; Umanand, Loganathan

A simple hysteretic energy harvesting method for nonneutral AC switches in load automation Journal Article

IEEE Transactions on Power Electronics, 31 (7), pp. 4906-4915, 2015.

Abstract | BibTeX | Links:

2.

Rao, Mannam Rama; Kuri, Joy; Prabhakar, T V

Towards optimal load management with day-ahead pricing Conference

Proceedings of the 7th International Conference on Communication Systems and Networks (COMSNETS), India, 2015.

Abstract | BibTeX | Links:

3.

Prabhakar, T V; Kulkarni, Chaitanya; Bhaskar, Nisha; Pande, Tejas

Joule Jotter: An interactive energy meter for metering, monitoring and control Conference

Proceedings of the 5th International Conference on Future Energy Systems (ACM e-Energy), United Kingdom, 2014.

Abstract | BibTeX | Links:

4.

Srinivas, N R; Umanand, Loganathan

Modified current space vector based Powerline Communication method for distributed inverters interfaced smart grids Conference

Proceedings of the 2012 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), India, 2012.

Abstract | BibTeX | Links:

Patent Application
Umanand, Loganathan; Karthik, A.
Energy-harvesting electronic switch
Indian Patent Application No. 4110/CHE/2015