Microelectromechanical Devices And Applications of MEMs
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Introduction on MEMs, MEMS is a technology of very small devices. It is a combination of mechanical functions and electrical functions on the same chip. MEMS are made up of components between 1 to 100 micrometers in size. Classification of MEMs, Application of MEMs in medical field(For hearing aid, for sight, for functioning of Kidney, for Diabetes patient , For Cardio-MEMs), Automoblie, Moblie devices, Digital tattoo, Mirconeedles and etc. Advantages and Disadvantages, Conculsion.
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MEMS are tiny integrated devices that combine mechanical and electrical components on a micro scale. They are able to sense, control and actuate on a micro scale but generate effects on a macro scale. MEMS utilize various fields including design, engineering, materials science and electrical engineering. Current MEMS devices include sensors in airbags, inkjet printer heads, and blood pressure sensors. MEMS are fabricated using deposition, patterning, and etching processes and are used in applications such as automotive, medical, military, and consumer electronics.Recently uploaded (20)
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About
Practice Head is assembled with Practice Torpedo intended for carrying out exercise firings. It is assembled with Homing Head in the forward section and oxygen flask in the rear section. Practice Head imparts positive buoyancy to the Torpedo at the end of run. The Practice Head is divided into two compartments viz. Ballast Compartment (Houses Light Device, Depth & Roll Recorder, Signal Flare Ejector, Discharge Valve, Stop Cock, Water discharge Valve, Bellow reducing Valve, Release Mechanism, Recess, Bypass Valve, Pressure Equalizer, Float, Sinking Plug etc.) which provides positive buoyancy at the end of run by discharging water (140 ltrs.) filled in the compartment and Instrument compartment (dry), houses (safety & recovery unit and its battery, combined homing and influence exploder equipment, noise maker, bollards & safety valve etc.) The recess in Ballast compartment houses the float which gets inflated at the end of run to provide floatation to the surfaced Torpedo. Several hand holes/recesses are provided on the casing/shell of Practice Head for assembly of the following components:-
a) Signal Flare Ejector Assembly
b) Depth and Roll Recorder Assembly
c) Light Device
d) Pressure equalizer
e) Drain/Discharge Valve assembly
f) Bollard Assembly
g) Holding for Floater/Balloon Assembly
h) Sinking Valve
i) Safety Valve
j) Inspection hand hole
Technical Details:
SrNo Items Specifications
1 Aluminum Alloy (AlMg5)
Casing Body Material: AlMg5
Larger Outer Diameter of the Casing: 532.4 MM
Smaller Outer Diameter of the Casing: 503.05 MM
Total Length: 1204.20 MM
Thickness: 6-8 mm
Structural Details of Casing: The casing is of uniform outer dia for a certain distance from rear side and tapered from a definite distance to the front side. (Refer T-DAP-A1828-GADWG-PH- REV 00)
Slope of the Tapered Portion: 1/8
Mass of Casing (Without components mounting, but including the ribs and collars on the body): 58.5 kg
Maximum External Test Pressure: 12 kgf/cm2
Maximum Internal Test Pressure:-
i. For Ballast Compartment: 2 kgf/cm2
ii. For Instrument Compartment: 1 kgf/cm2
Innerspace of casing assembly have 2 compartments:-
i. Ballast Compartment and
ii. Instrument Compartment
Cut outs/ recesses shall be provided for the assembly of following components.
a) Signal Flare Ejector Assembly
b) Depth and Roll Recorder Assembly
c) Light Device
d) Pressure Equalizer
e) Drain/ discharge valve assembly
2 Front Side Collar Material: AlMg5
Maximum Outer Diameter: 500 MM
Pitch Circle Diameter: 468 MM
All Dimensions as per drawing T-DAP-A1828-MDWG-C&R-REV-00
Application:
In a torpedo, the ballast components and instrument compartment play crucial roles in maintaining stability, control, and overall operational effectiveness. The ballast system primarily manages buoyancy and trim, ensuring that the torpedo maintains a stable trajectory underwater.Biases, our brain and software development
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- 2. INTRODUCTION MEMS is a technology of very small devices. It is a combination of mechanical functions and electrical functions on the same chip MEMS are made up of components between 1 to 100 micrometers in size. MEMS are attractive for many applications because of their small size and weight
- 3. What are MEMS? (Micro-electromechanical Systems) MEMS devices sense, think, act and communicate.
- 4. MEMS are constructed on one chip with electrical circuitry for inputs and outputs of the electromechanical components. The interaction of electronics, mechanics, light or fluids working together makes up a micro-electro-mechanical system or MEMS. Include motion, light, sound, chemistry, biochemistry, radio waves and computation, but all on a single chip
- 7. In Automotive Heavy use of MEMS is found in automotive such as in Air bag systems, Vehicle security system, Vehicle dynamic control, Rollover detection, Vehicle Navigation Systems, Automatic door locks The Sensor Cluster etc.
- 10. MEMS in the Medical Field A MEMS is a device that can be implanted in the human body. MEMS surgical tools provide the flexibility and accuracy to perform surgery.
- 11. MEMS AUGMENTATION Hearing Aids
- 12. Sight
- 13. Kidney
- 14. MEMS in the Diabetes patient A) Chemical sensor B) To the patient. C) Measures the blood glucose and a transmitter D) That sends the measurement to the a computer in (A)
- 15. Digital Tattoo Digital tattoo monitors blood below the skin
- 16. The Heart ( Cardio-MEMS )
- 17. MEMS MICRONEEDLES MEMS enables hundreds of hollow micro-needles to be fabricated on a single patch of area. This needles is applied to the skin and drug is delivered to the body using micro-pumps. Micro-needles small so can easily reach and stimulate the nerve endings.
- 19. Advantages Minimize energy and materials. Improved reproducibility. Improved accuracy and reliability. Increased sensitivity.
- 20. Disadvantages Farm establishment requires huge investments. Micro-components are costly compared to macro components. Design includes very much complex procedures
- 21. CONCLUSION Thus hereby we concluded our presentation in the topic of MEMS which is going to be the future of the modern technical field in the growth of micro sensor based applications such as automotive industries, wireless communication, security systems, bio medical instrumentation and in armed forces.