Design of a LAN based data acquisition system for sensor applications

Author

Krishna Murthy Uppunda, New Jersey Institute of Technology

Document Type

Thesis

Date of Award

1-31-1989

Degree Name

Master of Science in Electrical Engineering - (M.S.)

Department

Electrical Engineering

First Advisor

William N. Carr

Second Advisor

Durgamadhab Misra

Third Advisor

N. M. Ravindra

Abstract

This thesis presents the design of a local area network (LAN) based data acquisition system for sensor applications. The circuit designed forms the robotic LAN (RLAN) interface between the sensor IC nodes and the ARCNET network. The RLAN network uses two packet protocols. The sensor data request (SDR) packet is received by the sensor IC nodes and the sensor transmits the sensor data (SD) packet. The RLAN interface provides a two way communication between the sensors and the ARCNET network. Whenever an ARCNET node receives the SDR packet, it stores the packet temporarily in a 1k RAM buffer. The RLAN network interface then transmits the SDR packet to the sensor IC nodes which is decoded by the sensor chip and the sensor with the matching ID sends an SD packet. The RLAN network temporarily stores the SD packet in the RAM buffer before initiating the ARCNET network to transmit the packet to the destination node whose ID is specified by the Dip switch setting. The logical design of the SD and SDR circuits is accomplished using the library of logic instantiations available in 3-micron CMOS through the MOSIS foundry. NETED Mentor's IDEA Network editor is used to create the schematics of the SDR and SD logic. SYMED Mentor's Symbol editor is used to create symbols of the schematic. A symbol is created for each SDR and SD block. The various blocks are interconnected using NETED. The SDR and SD logic is finally simulated using QUICKSIM, Mentor's Interactive logic simulator. The RLAN interface circuit comprising of the SDR and the SD logic can together be incorporated in a single chip. The estimated area of the chip is 3.271 mm².

Recommended Citation

Uppunda, Krishna Murthy, "Design of a LAN based data acquisition system for sensor applications" (1989). Theses. 2938.
https://digitalcommons.njit.edu/theses/2938