Incubation Centre – RRCAT

Incubation Centre - RRCAT

For more detail, please contact:

Dr. C. P. Paul
Convener, Incubation Centre, RRCAT
Phone: +91 731 248 8396
Mobile: +91 94256 66596

Shri Praveen K. Agrawal
Co-convener, Incubation Centre, RRCAT
Phone: +91 731 248 2419
Mobile: +91 94258 31055


Invitation of Expression of Interest for Incubation of "Agni Rakshak"- Raman optical fiber based distributed fire sensor system

Prototype and graphical user interface of ‘Agni-Rakshak’ developed at RRCAT

About Technology:

"Agni-Rakshak" is a Raman optical fiber based distributed temperature sensor (DTS) system that measures distributed temperature over long lengths (up to few hundred meters or more). Here, the optical fiber itself acts as an array of distributed sensing elements. The system is very useful in detecting the onset of fire by sensing the heat. It has the capability to provide the information about the location, width and temperature of the fire zone to which the sensing fiber is subjected to. The system can generate the audio-visual alarms for various fire zones in the fiber. The alarm temperature can be programmed by the user.


Agni-Rakshak finds its applications as distributed fire monitoring system in hospitals, buildings, storage tanks, road & rail tunnels, stations, cable trays of power cables, transformers, coal conveyors, warehousing & storage, cement Industry, oil & gas Industry, nuclear industry, sensitive installations etc.


"Agni-Rakshak" provides the following salient advantages as a distributed fire detector.

  1. Ability to react to distributed and local fire events for rapid action and effective troubleshooting.
  2. Single sensor is able to detect fire over a wide spread area.
  3. Provides information about the onset of fire well before the actual fire takes place.
  4. Hassle free installation, no complex wiring of numerous point sensors. Based on single
  5. fiber optic sensing cable. No individual sensors are required.
  6. Uses optical fiber as passive sensing element, no hazard of fire due to spark in areas
  7. dealing with inflammable material like coal, gasoline, diesel etc.
  8. Effective even in harsh environments of high EMI.

System Details:

S. No.




(i) Optical fiber sensor type         


  1. SS seamless tube (1.8 mm) covered 62.5 µm /125 µm Multimode optical fiber                 OR
  2. (b) SS spiral tube (1.8 mm) with Aramid Yarn, low smoke zero halogen (LSZH) sheath covered 62.5 µm /125 µm Multimode optical fiber

(ii) Optical fiber loss

< 1.5 dB/km @ 1300 nm





Temperature range   

25 – 300 °C


Typical sensor length   

200 m


Temperature resolution        

4 °C


Spatial resolution              

2 m


Sampling over fiber length   

30 cm


Measurement time

30 s (optimized for fire detection)


Alarm types

On crossing the maximum zone alarm temperature


Zone wise alarm temperature

On crossing the maximum zone alarm temperature


Switches for reset

Power on/off, Optics power control on/off, Fire alarm



Zone wise fire alarm indicators


Data storage  

4 GB


Electrical input

220 V AC, 5 A, single phase



70 cm × 50 cm × 113 cm

Value Addition:

Successful efforts have been made at laboratory level to develop the prototype model of "Agni-Rakshak" System having above specifications which include sensor length of 200 m and spatial resolution of 2 m and a relatively bigger form factor. It is anticipated that the participating industry will jointly work towards the development & upgradation of economically viable ‘Agni-Rakshak’ system as incubatee with RRCAT under technology incubation provisions of DAE.  The recognition of IC-RRCAT as an Atal Incubation Centre-RRCAT is under stage of approval. This case will be dealt as per the incubation guidelines/ provisions of Atal Innovation Mission, NITI Aayog and DAE.

The incubatee will work in accordance with the user/industry demand. The developed technology, generated experience, and knowhow will be exclusive property of DAE, however, the successful incubatee will be given license to use the developed system as per agreement.

Invitation for Incubation:

The incubation effort is targeted towards the development & upgradation to more user-friendly and better performing "Agni-Rakshak" system with improved specifications on fast-track mode.

In this proposal, Incubation Centre-RRCAT invites industrial partner with good engineering capabilities, requisite infrastructure, and domain knowledge of developing systems for "Agni-Rakshak" system, to participate in this joint developmental effort of DAE.

Selection Criteria#:

    1. Qualified & experienced personnel in the field of optical fiber sensing technology/ lasers/ opto-electronics systems/ instrumentation.
    2. Technically sound incubatee participation.
    3. Adequate administrative capability.
    4. Sound financial commitment for incubation and full cycle business plan.
    5. Safety awareness/experience for working in laser (Class IV) based systems.
    6. Established firm in the field of optical fiber sensing technology/ lasers/ opto-electronics systems/ instrumentation.##
    7. Reasonable market presence; marketing and service network in pan-India.##
    8. Minimum Area 200 square meter excluding administrative office.##
    9. Required infrastructure for system building, like – mechanical fitting shop; electrical and electronics system; soldering station; assembly equipment/ tools; and laser safety goggle for Class-IV lasers.##
    10. Required infrastructure for system testing – laser power meter; multi-meter; fibre continuity tester; IR viewing card.##

    How to apply

    Interested industrial partners/ startups may Download Form to apply: KYPI_003_v1.docx and send the filled form to

    The last date for submitting proposal: 24 March 2023.

    #All selection criteria have equal weightage.
    ##Not mandatory for Start Ups.

Best viewed in 1024x768 resolution