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Electronic circuit for a field device used in automation technology

A technology of automation technology, electronic circuits, applied in the field of inspection of the first digital processor

Inactive Publication Date: 2019-09-20
EHNDRESS KHAUZER GMBKH KO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The disadvantage of this is that the algorithm must be written to this other processor each time the field device is started

Method used

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  • Electronic circuit for a field device used in automation technology
  • Electronic circuit for a field device used in automation technology

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0030] figure 1 The field device 100 shown in FIG. 2 includes electronic circuitry consisting of a sensor module 10 , a main electronics module 20 , and complementary digital communication interfaces 16 , 24 .

[0031] The sensor module 10 comprises a transducer element 11, for example a capacitively or resistively operating pressure transducer element, and sensor electronics 12, wherein raw measured values ​​are fed from the transducer element in the form of a main signal to the sensor electronics 12. Analog sensor input 14. These raw measured values ​​are digitized by the sensor electronics 12 and then further processed or adjusted to corresponding measured values ​​by a first digital processor 1 , for example a digital signal processor, by means of an algorithm Comp running on the processor 1 . Typically, temperature compensation of the raw measured values ​​is done by an algorithm Comp running on the digital signal processor 1 . The conditioned measurements are provided ...

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Abstract

Electronic circuit for a field device used in automation technology, having: - a first digital processor (1) with a first set of machine instructions for executing an algorithm (Comp) running on the processor (1), wherein the first processor (1) is set up to execute a test algorithm (Opcode) in order to calculate output data (A), wherein the test algorithm (Opcode) uses at least some, preferably all, machine instructions of the part of the first set of machine instructions used to execute the algorithm (Comp) to calculate the output data (A), - a second digital processor (2) with a second set of machine instructions for executing at least one verification algorithm (OPCT), wherein the second processor (2) is set up to execute the verification algorithm (OPCT) in order to calculate verification data (V), and wherein the electronic circuit, in particular the second processor (2), is set up to check the first processor (1) on the basis of the output data (A) calculated by the first processor (1) and the verification data (V) calculated by the second processor (2).

Description

technical field [0001] The invention relates to an electronic circuit for a field device of automation technology and a method for checking a first digital processor. Background technique [0002] In process automation technology as well as in production automation technology, field devices are frequently used to record and / or influence process variables. For recording process variables are measuring devices using sensors, such as liquid level measuring devices, flow measuring devices, pressure and temperature measuring devices, pH redox potential measuring devices, conductivity measuring devices, etc., which record the corresponding process variables, liquid position, flow, pressure, temperature, pH, and conductivity. Used to influence process variables are actuators, such as valves or pumps, by means of which the flow of liquid in pipes, pipes or line components, or the liquid level in containers can be varied. [0003] The Endress+Hauser Group manufactures and sells a l...

Claims

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Application Information

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IPC IPC(8): G05B19/042
CPCG05B19/0428G05B2219/24024G05B2219/24188G05B2219/24195G05B2219/25428
Inventor 斯特凡·鲁姆勒-维尔纳托马斯·齐里林格拉尔斯·卡尔韦克埃里克·施米特
Owner EHNDRESS KHAUZER GMBKH KO KG
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