Field device comprising two processors
First Claim
1. An electronics unit for at least one of a filling level measuring, a pressure measuring and a density measuring of a medium in a container, comprising:
- a first processor; and
a second processor;
wherein the first processor and the second processor are adapted for executing program modules;
wherein the unit is designed to carry out only a first program module that is critical to safety with the first processor and a second program modules that is not critical to safety with the second processor;
wherein the second processor is designed for meeting a higher safety requirement than the first processor.
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Accused Products
Abstract
A field device for measuring the filling level, the pressure or the density of a medium in a container is described. The field device comprises two processors that are separate from each other. The first processor corresponds to a lower safety standard while the second processor corresponds to a higher safety standard. Functions of the field device that are directed towards safety are carried out in the second processor. Functions that are less critical to safety are carried out in the first processor. Data exchange between the two processors is controlled by way of an operating system.
8 Citations
14 Claims
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1. An electronics unit for at least one of a filling level measuring, a pressure measuring and a density measuring of a medium in a container, comprising:
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a first processor; and a second processor; wherein the first processor and the second processor are adapted for executing program modules; wherein the unit is designed to carry out only a first program module that is critical to safety with the first processor and a second program modules that is not critical to safety with the second processor; wherein the second processor is designed for meeting a higher safety requirement than the first processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for measuring and determining one of a filling level, a pressure and a density of a medium in a container using a field device, comprising:
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carrying out only a first program module of the field device which is not critical to safety using a first processor; and carrying out a second program module of the field device which is critical to safety using a second processor; wherein the second processor is designed for meeting a higher safety requirement than the first processor.
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13. A program element for measuring and determining one of a filling level, a pressure and a density of a medium in a container using a field device, the program element when executed on first and second processors of the field device instructs the first and second processors to carry out the following steps:
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carrying out only a first program module of the field device which is not critical to safety using the first processor; and carrying out a second program module of the field device which is critical to safety using the second processor; wherein the second processor is designed for meeting a higher safety requirement than the first processor.
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14. A computer-readable medium on which a program element for measuring and determining one of a filling level, a pressure and a density of a medium in a container using a field device is stored, the program element when executed on first and second processors of the field device instructs the first and second processors to carry out the following steps:
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carrying out only a first program module of the field device which is not critical to safety using the first processor; and carrying out a second program module of the field device which is critical to safety using a the processor; wherein the second processor is designed for meeting a higher safety requirement than the first processor.
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Specification