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US 2018/0003581 A1Published application
Inferential sensing engine
AssigneeSchneider Electric Systems USA, Inc.
InventorWilliam M. Slechta
Life of this patent
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Abstract
Providing a fast response to a process step while allowing a sensor response to remain relatively slow. A mechanical component generates a response to a step change in a physical property and an electrical component generates an analog electrical signal indicative of the response generated by the mechanical component over a period of time. The analog electrical signal is converted into digital values and the digital values are used to indicate the final value of the step change in the physical property before the period of time has elapsed.
Claims23
A system, comprising:
- a mechanical sensing element configured to output a mechanical step change in response to a physical step change inputted thereto, wherein the physical step change comprises a change in a physical property of an object;
- an electrical sensing element configured to input the mechanical step change and output an analog electrical signal indicative thereof in response to said inputting;
- an analog-to-digital (A/D) converter configured to receive and convert the analog electrical signal into a plurality of discrete digital values as a function of time;
- a processor;
- and
- a tangible processor readable storage medium storing processor-executable instructions that, when executed by the processor:
- apply a first time-dependent relationship to the discrete digital values for determining a value of the mechanical step change inputted to the electrical sensing element, wherein the first time-dependent relationship characterizes the response of the electrical sensing element to the mechanical step change;
- apply a second time-dependent relationship to the determined value of the mechanical step change outputted by the mechanical sensing element for determining a value of the physical step change inputted to the mechanical sensing element, wherein the second time-dependent relationship characterizes the response of the mechanical sensing element to the physical step change;
- and
- apply a third time-dependent relationship to the determined value of the physical step change inputted to the mechanical sensing element for determining a magnitude of the change in the physical property of the object, wherein the third time-dependent relationship characterizes a response of the object to the change in the physical property of the object.
7 more elements
A physical computer-readable medium storing computer-executable instructions for determining the magnitude of a change in a physical property, said computer-executable instructions comprising instructions for:
- applying a first time-dependent relationship to an analog electrical signal outputted by an electrical sensing element for determining a mechanical step change inputted to the electrical sensing element, wherein the first time-dependent relationship characterizes the response of the electrical sensing element to the mechanical step change, and wherein the mechanical step change is outputted by a mechanical sensing element;
- applying a second time-dependent relationship to the determined mechanical step change outputted by the mechanical sensing element for determining a physical step change inputted to the mechanical sensing element, wherein the second time-dependent relationship characterizes the response of the mechanical sensing element to the physical step change;
- and
- applying a third time-dependent relationship to the determined physical step change inputted to the mechanical sensing element for determining the magnitude of a change in a physical property of an object, wherein the third time-dependent relationship characterizes a response of the object to the change in the physical property of the object.
1 more element
A method, comprising:
- generating a mechanical response by a mechanical sensing element in a sensing system at a first time, wherein the mechanical response is indicative of a change from an initial value to a final value of a sensed physical property;
- generating a continuous electrical signal by an electrical sensing element in the sensing system from a second time to a fifth time in response to the change of the sensed physical property, wherein a voltage of the continuous electrical signal is indicative of the initial value at the second time and slews until the voltage is indicative, at the fifth time, of the final value of the sensed physical property, wherein the second time is after the first time, and wherein the amount of time between the first time and the second time comprises a dead time caused by the time needed for the mechanical component to communicate with the electrical component;
- applying a first time-dependent relationship to the continuous electrical signal outputted by the electrical sensing element for determining the mechanical response generated by the mechanical sensing element, wherein the first time-dependent relationship characterizes the response of the electrical sensing element to the mechanical response;
- applying a second time-dependent relationship to the determined mechanical response for determining the change from the initial value to the final value of the sensed physical property, wherein the second time-dependent relationship characterizes the response of the mechanical sensing element to the change of the sensed physical property;
- and
- applying a third time-dependent relationship to the determined change from the initial value to the final value of the sensed physical property for determining a magnitude from the initial value to the final value, wherein the third time-dependent relationship characterizes a response of an object to the change in the physical property.
3 more elements
Dependencies are inferred from the claim text.