FAULT TOLERANT SENSOR SCHEME.

Multi-sensor systems pose the problem of how to coherently and efficiently treat the data provided by the various sensors. However, the availability of greater numbers of sensors also broadens the ability to build fault tolerant sensor systems. We define a framework in which sensors can be abstractly defined in .terms of computational processes operating on the output from other sensors. Such processes are called logical sensors. Logical sensors make sensor configuration and integration easier and facilitate reconfiguration of sensor systems so that fault tolerance can be both expressed and achieved. 'This work was supported In part by the System Development Foundation and NSF Grants ECS-8307483 and MCS-82-2' 750