Electronics &
Communication Technologies -Absolute Optical Angle Encoder
Introduction
A national research organisation is offering a technology
for absolute optical angle encoder. The encoder provides
absolute angle information with 0.35 degree accuracy.
It operates with a grey coded disc, infrared transmitters
and receivers. The output is 10 bit grey coded TTL data.The
encoder data can be transmitted and displayed at a distant
place with the help of a signal processor and display
unit. The signal processor converts the encoder data
into BCD format which can be transmitted on a Rs 232C
line. The display system receives Rs 232C data, converts
them into parallel lines and displays the angle on seven
segment displays. The total system operates on +/- 12
V DC. The system has been developed for use in small
and medium size satellite earth station antennas for
providing look angle information. For an antennas, two
encoders are required for mounting on two axes. Use
of RS 232C line enables placing display unit away from
the antenna and use of minimum number of transmission
lines.
SPECIFICATIONS OPTONAL ENCODER
* Type Absolute
* Code Grey
* No. of bits 10
* Steps per revolution 1024
* Data outputs Parallel (10 lines)
* Output level TTL
* Operating voltage 12V DC +/- 10% (5v DC optional)
* Accuracy < = 1 bit/0.35 deg.
* Increment direction CW (observed from shaft side)
* Operating environment Outdoor
* Weight 2.5 kg.
* Size Radius 12 cm, Height 10 cm
PROCESSOR and DISPLAY UNIT
* Inputs Two 10 Bit TTL Inputs, Grey type
* Output RS232 C, data and clock, BCD
* Frame 20 Bits and 16 Bits with two sync characters
* Data Rate 9.6 K Bits
* Display 5 + 4.7 segment LED
* Resolution 0.01 deg.
* Supply (Processor) +/- 12 V +/- 10
* Supply (Display Unit) +/- 5V
MARKETING OF THE MANUFACTURED
PRODUCT : Marketing should be done by the licensee.
Electrical, Electronics :
Primarily designed for earth station antenna angle
readings.
Can be used with small and medium size antennas
and multisatellite or different satellites.
Can be used for nay rotating axis angle measurements,such
as in lathe, milling machine etc.
Simple in realisation.
Provides an accuracy of 0.35 deg.
Fabricated from commercial grade components available
in local market.
Encoder with 0.01 deg. accuracy is presently under development.
Inputs Required:
Raw Materials:Optoelectronic devices, standard, disc.,
PCB, other components, connector, mechanical assembly,
standard IC, SLSI, connector, mechanical box, chassis,
cables and connectors
Transfer Forms: Know-how;
Patent for Sale; Technical assistance
Main Application: Electrical/Electronics/Telecommunications
For further
information please contact :
Technology Bureau for Small Enterprises
APCTT Building, Qutub Institutional Area
P.O. Box – 4575
New Delhi – 110016, India
