Council of Scientific and Industrial Research

Hari Narayan Bhargaw

Harish Kumar Sardana

Ram Prakash Bajpai

Saroj Batra

Murli Manohar Joshi

Gautam Mitra

Syed Azhar Rasheed Hashmi

Jagdish Prasad Pandey

Mulayam Singh Yadav

Gautum Mitra

Ajay Naik

Navin Chand

A shape memory effect measuring apparatus is provided that is useful for tensile stress, strain and recovery stress measurement. The apparatus includes a load cell, a linear variable displacement transducer, a temperature sensor, a rigid platform, a computer-based data recorder and a processing system a load frame, grips to hold sample, and a liquid bath. The liquid bath is mounted on the rigid stand platform to hold the liquid bath. A uniform temperature of liquid is attained by controlled heating and stirring arrangement. The computer-based processing system may be used to monitor and control the desired temperature of the sample. A change in length of a specimen and stress generated during expansion thereof may be recorded, from which strain and stress may be calculated using the apparatus.

Apparatus for testing shape memory effects in liquid bath

A currency genuineness detection system using plurality of opto-electronic sensors with both transmission and reflective (including fluorescence) properties of security documents is developed. Both detection sensing strategies utilize integrated response of the wide optical band sensed under UV visible along with optional near infra red light illumination. A security document is examined under static condition. A window signal signature is thus possible from photodetectors responses for various kinds of documents of different denominations, kinds and country of origin. A programmable technique for checking the genuineness of a security document is possible by feeding a unique code of the currency under examination.

Fake document including fake currency detector using integrated transmission and reflective spectral response

A system for automatic detection of authenticity of security documents by measuring reflected components of incident energy in three or more optical wave bands. The system involves the use of UV-visible light source, an optional near infra red light source, photodetectors and associated sensing circuitry. Photoelectric signals generated by photodetectors from the reflected energy received from a security document are used to verify its authenticity under UV-visible along with optional near infra red illumination. The process involves measurement of energy reflected as photoelectric signals from a security document in at least three optical wavebands by suitably located photodetectors with appropriate wave band filters and the electronic signal processing to distinguish between a genuine document from a fake one for ultimate LED indicator display and audio-visual alarms, hence the detection of fake security document.

Fake currency detector using visual and reflective spectral response

A currency genuineness detection system using plurality of opto-electronic sensors with both transmission and reflective (including fluorescence) properties of security documents is developed. Both detection sensing strategies utilise integrated response of the wide optical band sensed under UV visible along with optional near infra red light illumination. A security document is examined under static condition. A window signal signature is thus possible from photodetectors responses for various kinds of documents of different denominations, kinds and country of origin. A programmable technique for checking the genuineness of a security document is possible by feeding a unique code of the currency under examination.

Growing community of inventors

Chandigarh, India

Hari Narayan Bhargaw