Monitoring and alarm apparatus
First Claim
Patent Images
1. Apparatus for monitoring output signals from a sensor, comprising an input for receiving said output signals, means for automatically setting upper and lower levels to define a band around the initial value or values of said output signals, means for comparing the levels set with predetermined parameters and for indicating whether the set levels are abnormal or unacceptable.
1 Assignment
0 Petitions
Accused Products
Abstract
This invention relates to apparatus for monitoring output signals from a sensor. Apparatus (17) monitors signals from sensors (10 to 12). A C.P.U. (18) in the apparatus (17) provides warning signals if the output of a sensor breaches an alarm band or band set by the C.P.U. in response to the initial values of the sensor output.
-
Citations
11 Claims
- 1. Apparatus for monitoring output signals from a sensor, comprising an input for receiving said output signals, means for automatically setting upper and lower levels to define a band around the initial value or values of said output signals, means for comparing the levels set with predetermined parameters and for indicating whether the set levels are abnormal or unacceptable.
-
6. Apparatus for monitoring output signals from a sensor, comprising an input for receiving said output signals, means for automatically setting upper and lower levels to define a band around the initial value or values of said output signals, means for indicating when the value of said output signals passes through a particular level, means for manually canceling the indicating means such that a non-fluctuating signal will not cause an alarm signal and means for resetting the levels after cancellation in response to a fluctuating signal.
- 7. Apparatus for monitoring output signals from a sensor, comprising an input for receiving said output signals, means for automatically setting a plurality of bands around the initial value or values of said output signals, the bands having levels of increasing deviation from the initial value or values of said output signals, indicating means for providing, whenever said output signals pass through any level, an indication which is representative of the level of greatest deviation passed through by said output signals, and means for comparing the levels set with predetermined parameters and for indicating whether the set levels are abnormal or unacceptable.
-
11. Apparatus for monitoring output signals from a sensor, comprising an input for receiving said output signals, means for automatically setting a plurality of bands around the initial value or values of said output signals, the bands having levels of increasing deviation from the initial value or values of said output signals, indicating means for providing, whenever said output signals pass through any level, an indication which is representative of the level of greatest deviation passed through by said output signals, and means for manually canceling the indicating means such that a non-fluctuating signal will not cause an alarm signal and means for resetting the levels after cancellation, in response to a fluctuating signal.
Specification