26-06-2012, 05:21 PM
HAND GESTURE BASED WIRELESS ROBOT USING ACCELEROMETER
accelerometer based robot.pptx (Size: 161.9 KB / Downloads: 215)
ACCELEROMETER
An accelerometer is a device that measures proper acceleration, also called the four-acceleration. For example, an accelerometer on a rocket accelerating through space will measure the rate of change of the velocity of the rocket relative to any inertial frame of reference
Transmitter:
For controlling robot we have used RF transmitting remote. For RF transmission we have used HT12E Encoder IC. The 212 encoders are a series of CMOS LSIs for remote control system applications. They are capable of encoding information which consists of N address bits and 12_N data bits. Each address/ data input can be set to one of the two logic states. The programmed addresses/data are transmitted together with the header bits via an RF or an infrared transmission medium upon receipt of a trigger signal. The capability to select a TE trigger on the HT12E or a DATA trigger on the HT12A further enhances the application flexibility of the 212 series of encoders. The HT12A additionally provides a 38kHz carrier for infrared systems.
RF Receiver
For RF transmission purposed it is needed to encode the signal generated at computer parallel port with the help visual basic code. For signal encoding purpose we have used HT 12E encoder. HT12 E is 212 encoders are a series of CMOS LSIs for remote control system applications. They are capable of encoding information which consists of N address bits and 12_N data bits. Each address/ data input can be set to one of the two logic states.