MEMS Acoustic Sensor 

MEMS Acoustic sensor is used to monitor the Acoustic Levels generated during the launch of a satellite launch vehicle. It is a piezoelectric, MEMS sensor with built-in electronics. MEMS technology enables miniature devices to be precision batch fabricated. The sensors work in harsh environments and can withstand Vibration test, Shock test, Humidity test, Temperature soak tests. It is the first indigenously developed MEMS sensor flight-tested in an Indian Launch Vehicle and has operational heritage of 12 successive PSLV flights.

Salient Features 

• Bulk micro machined silicon diaphragm with Piezoelectric sense layer on Silicon

• Range - 100 to 180dB (2Pa to 20KPa)

• Frequency Range - 31.5Hz to 6.3KHz in 1/3rd Octave centre frequencies

• Sensitivity - 150 to 200uV/Pa

• Amplitude Linearity - ± 2dB

• Frequency response - ± 3dB

• Weight – 120grams

• Operating temperature range - -40 to +125?C

• System design done at ASCD/AVIONICS/VSSC

• Process design & fabrication at CEERI, Pilani

• Built in electronics and hence smart

• Elimination of external signal conditioners

• Reduction in cabling and ease of integration

VSSC is willing to offer this technology to eligible interested parties who are in the field of manufacturing similar items

Interested entrepreneurs are requested to contact the address given below with all relevant particulars regarding their line of current activity, infrastructure available, market assessment of the product, financial arrangements strength of the company, turn over and sales of their products for the past few years and a copy of their latest annual report. 


ISRO is willing to offer the knowhow of this technology to suitable entrepreneurs / industries in India. Capable manufacturing industries interested in acquiring this knowhow may write with details of their present activities, requirements and plans for implementation, infrastructure and technical expertise available with them, their own market assessment, if any, and plans for diversification to the address given below:


Technology Transfer & Industrial Coordination Division (TT&IC)

Vikram Sarabhai Space Centre, ISRO PO

Thiruvananthapuram-695 022

E mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Ph: 0471-2564081

Fax: 0471-2564134

Ph: 0471-2564081/2565133/2565695

Fax: 0471-2564134 

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