Browse Prior Art Database

Advanced Programmable Functional Exerciser for an Automotive Vehicle Technician Terminal

IP.com Disclosure Number: IPCOM000035939D
Original Publication Date: 1989-Aug-01
Included in the Prior Art Database: 2005-Jan-28
Document File: 2 page(s) / 48K

Publishing Venue

IBM

Related People

Austin, WL: AUTHOR [+3]

Abstract

This article describes a tester for an automotive vehicle technician terminal which expands the measurement capabilities to simulate a wide variety of vehicles.

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Advanced Programmable Functional Exerciser for an Automotive Vehicle Technician Terminal

This article describes a tester for an automotive vehicle technician terminal which expands the measurement capabilities to simulate a wide variety of vehicles.

Typically, a functional exerciser is designed to send and receive analog and digital signals just as an engine and accessories would. Its primary purpose is to provide a standard that can be used to test the accuracy and reliability of the technician terminal, such as shown in the perspective view of Fig. 1. The functional exerciser has circuitry to interface with the technician terminal.

A functional exerciser provides a serialized pulse train that represents the assembly line data link (ALDL) signal from the engine control module. This pulse train contains approximately sixty measurements that monitor the engine performance of the automotive engine and accessories. The functional exerciser will source voltages and resistances, read voltages and measure current. In addition, it will apply pulses, wrap signals, and source large amounts of current.

The functional exerciser disclosed herein is shown in Fig. 2. It includes a keyboard and CRT monitor. Testing can easily be modified via programming, whereas the prior exerciser was hardware-confined. Signals can be set to many levels for the analog functions. Diagnostics will provide a checkout and calibration procedure that can be used each time the unit is powered up. Fun...