Browse Prior Art Database

Fan And Gate Monitor

IP.com Disclosure Number: IPCOM000061996D
Original Publication Date: 1986-Sep-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Kasdagly, DG: AUTHOR [+3]

Abstract

In computer systems it is necessary to monitor a variety of different conditions. For example, it is often necessary to monitor (a) if the cooling fan motor is operating and (b) if the gate on which the circuits are mounted is closed.

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Fan And Gate Monitor

In computer systems it is necessary to monitor a variety of different conditions. For example, it is often necessary to monitor (a) if the cooling fan motor is operating and (b) if the gate on which the circuits are mounted is closed.

It is possible to monitor these conditions by the use of two sensors, namely, a Hall Effect sensor on the fan motor to indicate if the motor is operating and a switch on the fram indicate if the frame gate is closed.

Improved reliability and lower cost can be achieved by combining these two functions and eliminating one of the sensors. One can obtain both indications by monitoring the output signal from a Hall sensor on the fan motor. This signal can tell if the motor is operating by its very existence. The magnitude of this signal can indicate if the gate is open, since the motor will run faster when the gate is open due to the lower air resistance.

Disclosed anonymously.

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