Abstract: An arrangement and method for providing compensation to a cyclical input signal is disclosed. The arrangement comprises a first detection unit (20) for detecting a first event in a cyclical output signal; a compensation signal generation unit (14) for generating a compensation signal; and a signal combination unit (8) for combining the compensation signal and the cyclical input signal to obtain the cyclical output signal. The compensation signal generation unit (14) is arranged to adjust the compensation signal at an instant which has a determined relationship with the detection of the first event. By adjusting the compensation signal at the right instant in a cycle of the cyclical output signal, the adjustment will not influence the further processing of the cyclical output signal. The method can be used to compensate the offset and sensitivity characteristics of a sensor.
Type:
Grant
Filed:
July 29, 2005
Date of Patent:
March 29, 2011
Assignee:
Sensata Technologies Holland B.V.
Inventors:
Tim Tiek, Paulus Thomas Johannes Gennissen
Abstract: Method and sensing module for sensing pollution of outside air. The sensing module (1) comprises an electro chemical sensing element (3), and a processor (2). A sensing module output signal is provided based on the measurement signal and a baseline signal level. The baseline signal level is adapted depending on two threshold levels (13-15). A pollution concentration value is determined from the measurement signal and a classification level of air pollution is provided as sensing module output signal. A classification level is determined using a plurality of classification threshold values and the pollution concentration values. The plurality of classification threshold values are dynamically adjustable.
Type:
Grant
Filed:
November 25, 2004
Date of Patent:
May 25, 2010
Assignee:
Sensata Technologies Holland B.V.
Inventors:
Roger Marcel Appelo, Tom Urban Artursson, Per Anders Holmberg, Nicolae Barsan, Heiko Eugen Ulmer