PCT/FI90/00122

This international patent application PCT/FI90/00122 is the basis of many existing national or regional patents under the title:

"Apparatus and method for calibrating a sensor system using the Fast K- Filtering (FKF) formula"

Inventor: Lange, Antti A. I.
Abstract:
A method and apparatus for calibrating a sensor system output that includes a logic unit (1) for receiving uncalibrated sensor signals from a centralized sensor system (3) and for reading/writing data from/to a data base unit (2) that contains updated information on all control (4) and performance aspects of the sensors. Based upon these inputs, the logic unit (1) can provide real-time or near real-time optimum calibration (5) of the sensors by using the Fast K- Filtering (FKF) method when the stability conditions of standard K- Filtering are met by the sensor system.
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Countries included:
Africa: OAPI patent No. 9793 for:
Burkina Faso,
Benin,
Central African Republic,
Congo,
Cameroon,
Gabon,
Mali,
Mauritania,
Senegal,
Chad,
and Togo;
Australia: pat. granted,
Barbados: pat. pending,
Bulgaria: pat. granted,
Europe: European patent No. 0470140 for:
Austria,
Belgium,
Switzerland,
Denmark,
Spain,
France,
Great Britain,
Ireland,
Italy,
Luxembourgh,
Monaco,
The Netherlands,
and Sweden;
Finland: pat. No. 101501 of 30.06.98,
Hungary: pat. pending,
Japan: pat. granted,
Malawi: pat. granted,
Norway: pat. pending,
Romania: pat. pending,
United States: Patent 5,506,794 of Apr. 9, 1996.
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