# US 8,770,009 B2 · Compensation arrangement and method for operation thereof

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- Number: US 8,770,009 B2
- Document ID: US8770009B2
- Status: Granted
- Kind: B2
- Application number: 13/027,295
- Filed: 2011-02-15
- Published: 2011-06-09
- Granted: 2014-07-08
- Earliest claimed: 2011-02-15
- Assignees: Sensata Technologies, Inc.
- Applicants: Tim Tiek; Paulus Thomas Gennissen
- Inventors: Tim Tiek; Paulus Thomas Gennissen
- Web page: https://patentgrep.com/patent/US8770009B2

## CPC

- G01D 3/028: mitigating undesired influences, e.g. temperature, pressure
- G01D 3/032: affecting incoming signal, e.g. by averaging; gating undesired signals
- G01L 9/045: {with electric temperature compensating means (non electric temperature compensating means G01L19/04)}
- G01L 19/02: Arrangements for preventing, or for compensating for, effects of inclination or acceleration of the measuring device; Zero-setting means (for aneroid barometers G01L7/14)
- G01L 19/04: Means for compensating for effects of changes of temperature {, i.e. other than electric compensation}
- G01L 23/22: for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
- G01L 27/005: {Apparatus for calibrating pressure sensors}
- G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01L: MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G)

## 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.

## Claims

### Claim 1

Method of compensation for a cyclical output signal, the method comprises
detecting a first event in the cyclical output signal wherein a falling or rising edge passing a predetermined level in the output signal triggers the detection;
generating a compensation signal;
combining the compensation signal and a cyclical input signal from a sensor to obtain the cyclical output signal wherein the compensation signal is adjusted a delay time period after the detection of the first event.

### Claim 2 (depends on 1)

Method of compensation according to claim 1 further comprises determining a period of time between subsequent detections of events, wherein the delay time period has a relationship with said period of time.

### Claim 3 (depends on 1)

Method of compensation according to claim 1, wherein the compensation signal is generated in response to the detection of the first event and the detection of a second event in the cyclical output signal in the period after the detection of the first event and the subsequent detection of the first event.

### Claim 4 (depends on 1)

Method of compensation according to claim 1, wherein the compensation signal is generated in response to the detection of the first event and the detection of a second event and a third event in the cyclical output signal in the period after the detection of the first event and the subsequent detection of the first event.

### Claim 5 (depends on 3, 4)

Method of compensation according to claim 3 or 4 wherein the second event is detected when the cyclical output signal is below a further predefined output value.

### Claim 6 (depends on 1)

Method of compensation according to claim 1, wherein the compensation signal is generated in response to the detection of the first event and another input signal.

### Claim 7 (depends on 1)

Method of compensation according to claim 1, wherein the cyclical input signal is retrieved from a cylinder pressure.

### Claim 8 (depends on 1)

Method of compensation according to claim 1, wherein the compensation signal is controlled with a digital signal.