Date of Defense

4-2005

Department

Electrical and Computer Engineering

Abstract

The designing, building, and testing a 2-D "Inertial Navigation System (INS)" for short distance tracking systems was done for this project by implementing the inertial tracking technology. The project involved designing a system that computed the position of a moving object by sensing its acceleration in X and Y-axis. The system presented the position of the object in a designed graphical user interface on a PC monitor. The minimum range for the transmission between the sensor and user interface is 250 ft.

The INS used micro-electro-mechanical systems (MEMS) devices, to determine the acceleration of the object. The acceleration signal was sampled using a microcontroller (A) and then transmitted wirelessly to the base station unit. The base station unit used a receiver module to receive the digital signal. The duty cycle of the signal was varied by the microcontroller A with the change in the acceleration signal from the accelerometer. The change in duty cycle was recorded in the second microcontroller (B) attached to the receiver. For different values of duty cycle, the microcontroller B sent an eight bit signal to the USBMOD. The USBMOD was the interfacing medium between the project and the personal computer. A clock signal was also generated by microcontroller B to USBMOD, which was required for proper functioning ofUSBMOD. A program in Visual Studio was written to convert the acceleration to the position of the moving abject and then display it on the computer. The communication is almost real time with the sampling rate of 16.38 milliseconds for one sample. The USBMOD reacts to the change in the input for minimum of 16 milliseconds. That is the reason why the sampling rate was set at unit sample per 16.38 millisecond.

Access Setting

Honors Thesis-Campus Only

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