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The document describes the development of a micro electronic pill used for remote biomedical measurements in the gastrointestinal (GI) tract. Early radiometry capsules had disadvantages like large sensor size and poor reliability. Later versions were smaller due to applying semiconductor fabrication technologies, forming the micro electronic pill. The pill contains multichannel sensors for measurements like temperature, pH, conductivity and dissolved oxygen. Sensors are fabricated using electron beam lithography and controlled by an application specific integrated circuit.

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92 views3 pages

Next 3page

The document describes the development of a micro electronic pill used for remote biomedical measurements in the gastrointestinal (GI) tract. Early radiometry capsules had disadvantages like large sensor size and poor reliability. Later versions were smaller due to applying semiconductor fabrication technologies, forming the micro electronic pill. The pill contains multichannel sensors for measurements like temperature, pH, conductivity and dissolved oxygen. Sensors are fabricated using electron beam lithography and controlled by an application specific integrated circuit.

Uploaded by

nishil
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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MICRO ELECTRONIC PILL

ABSTRACT

The invention of transistor enabled the first use of radiometry capsules, which used simple
circuits for the internal study of the gastro-intestinal (GI) tract. This capsule transmits only from a
single channel and also due to the size of the components also suffered from poor reliability, low
sensitivity and short lifetimes of the devices. This led to the application of single-channel
telemetry capsules for the detection of disease and abnormalities in the GI tract where restricted
area prevented the use of traditional endoscopy.
Radiometry capsules were later modified as they had the disadvantage of using laboratory type
sensors such as the glass pH electrodes, resistance thermometers, etc. which also of very large
size. The later modification is similar to the above instrument but is smaller in size due to the
application of existing semiconductor fabrication technologies. These technologies led to the
formation of "Micro Electronic Pill".
Microelectronic pill is basically a multichannel sensor used for remote biomedical
measurements using micro technology. This is used for the real-time measurement parameters
such as temperature, pH, conductivity and dissolved oxygen. The sensors are fabricated using
electron beam and photolithographic pattern integration and were controlled by an application
specific integrated circuit (ASIC).

i
DEPARTMENT OF ECE ,GECW
MICRO ELECTRONIC PILL

CONTENTS
Page No

List of figures iii

1. Introduction 1
2. Microelectronic pill design and fabrication
2.1 Sensors 4
2.2 Control chip 6
2.3 Radio transmitter 7
2.4 Capsule 8
3. Range and accuracy 12
4. Advantages 13
5. Disadvantages 14
6. Future scope 15
7. Conclusion 16
8. References 17

ii
DEPARTMENT OF ECE ,GECW
MICRO ELECTRONIC PILL

LIST OF FIGURES

2.1 Components of microelectronic pill 3


2.2 The micro electronic sensors 5
2.3 Capsule structure 8
3.1 Microelectronic pill block diagram
Capsule structureApplication specific integrated circuit control chip 9
3.2 Remote mobile analytical micro system 10
3.3 Application specific integrated circuit control chip 11
Ap
plic
atio
n
spe
cifi
c

iii
DEPARTMENT OF ECE ,GECW

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