US 7,843,324 B2 · Detection arrangements

Abstract

A detection system in which a single sensor (14) is employed to detect two, or more, levels, or ranges, of a parameter. The output signal from the sensor (14) is fed to a detection circuit (12) for amplification and thence to a control circuit (24). The control circuit (24) is switchable, either manually, or preferably programmably, for example by a timer, between two or more modes of operation for processing the output signal from the sensor (14) in a different manner, for example using different algorithms, according to the condition that is to be detected. The switching of the control circuit (24) between its modes results in a signal being sent to the detection circuit (12) to change its sensitivity to the signal received from the sensor (14), thereby to maintain accuracy of measurement of the parameter in both or all modes of operation.

Claims19

Dependent claims

A method for operating a detection device that detects at least one parameter, the method comprising:

receiving a control signal indicative of at least one of a first mode and a second mode, the detection device in the first mode detecting at least one parameter based on a first sensitivity and in the second mode detecting the at least one parameter based on a second sensitivity, the first sensitivity being different from the second sensitivity;
adjusting a sensitivity of the detection device to one of the first sensitivity or the second sensitivity based on the received control signal;
and
generating an output based on the adjusted sensitivity.

1 more element

Dependencies are inferred from the claim text.

Detection arrangements

Life of this patent

Detection arrangements

Life of this patent

Abstract

Claims19