Method for adjusting a sensor

• US 10,436,617 B2
• Filed: 05/13/2016
• Issued: 10/08/2019
• Est. Priority Date: 05/13/2015
• Status: Active Grant

• Current Assignee: Endress+Hauser Conducta Gesellschaft FUER Mess- und Regeltechnik mbH+Company KG
• Original Assignee: Endress+Hauser Conducta GmbH+Company KG
• Inventors: Ottersten, Bo, Freudenberger, Martin, Lohmann, Martin
• Primary Examiner(s): Henry, Caleb E
• Application Number:
  US15/154,402
• Publication Number:
  US 20160334247A1
• Time in Patent Office: 1,243 Days
• Field of Search: 702104
• CPC Class Codes: G01D 18/008 with calibration coefficients stored in memory

Abstract

At least one aspect of the disclosure includes a method for start-up of a sensor comprising the steps of performing a factory adjustment during the manufacture of the sensor to generate factory adjustment data; permanently storing of the factory adjustment data from the factory adjustment in a memory of the sensor; prior to first use of the sensor, performing an initial user adjustment to generate initial user adjustment data; and permanently storing of the initial user adjustment data from the initial user adjustment in the memory. Another aspect of the disclosure improves the status evaluation of the sensor by enable permanent access to both the factory adjustment data and the initial user adjustment.

Claims

1. A method for adjusting a sensor, comprising:

providing a sensor including a non-volatile memory;

performing a first calibration and adjustment of the sensor to yield first adjustment data, wherein the first calibration and adjustment is a factory calibration and adjustment;

storing the first adjustment data permanently in the non-volatile memory of the sensor;

delivering the sensor to a user;

performing a second calibration and adjustment of the sensor to yield second adjustment data prior to use of the sensor, wherein the second calibration and adjustment is performed by the user before a first use of the sensor;

storing the second adjustment data permanently in the non-volatile memory of the sensor;

performing an additional calibration and adjustment of the sensor to yield additional adjustment data;

storing the additional adjustment data in the non-volatile memory, wherein the first adjustment data and the second adjustment data are not overwritten with the additional adjustment data; and

comparing the additional adjustment data with the first adjustment data or the second adjustment data to perform a status evaluation of the sensor.

2. The method of claim 1, the method further comprising:

confirming by user interaction the storage of the second adjustment data before the second adjustment data are permanently stored in the non-volatile memory.

3. The method of claim 1, further comprising:

performing a subsequent additional calibration and adjustment of the sensor to yield subsequent additional adjustment data;

storing the subsequent additional adjustment data in the non-volatile memory, wherein the additional adjustment data are overwritten with the subsequent additional adjustment data according to the first-in, first-out (FIFO) principle.

4. The method of claim 1, wherein the steps of permanently storing the first adjustment data and permanently storing the second adjustment data are performed by a computer program product.

5. The method of claim 1, wherein the storing of the first adjustment data, the storing of the second adjustment data, the storing of the additional adjustment data, and the performing of the status evaluation is performed by a computer program product.

6. The method of claim 5, wherein the computer program product is further adapted to store additional adjustment data and to overwrite previous additional adjustment data with subsequent additional adjustment data.

7. The method of claim 1, wherein the sensor is a digital sensor.

8. The method of claim 1, wherein the status evaluation is used for determining a measurement quality of the sensor or a probability of failure of the sensor or a prediction of the remaining operational life time of the sensor or a time span remaining for a required maintenance work of the sensor or a required replacement of the sensor.