摘要:
A sensor includes an electronic module that comprises several electronic subassemblies and a processor that can be electrically coupled to the electronic subassemblies. The subassemblies respectively feature a programmable storage device with subassembly-specific data of the respective subassembly. The content of the respective programmable storage devices can be read out and evaluated by the processor.
摘要:
A method for filling level measuring comprises generating an echo curve and analysing the echo curve by means of an analysis method. The analysis method is at least one analysis method selected from the group of analysis methods comprising analysing the echo curve by means of at least two parallel tasks, and analysing the echo curve by comparing the echo curve with a spurious-echo curve at the IF-level.
摘要:
A field device for measuring a filling level, a pressure or a density of a medium in a container includes data memory with two memory areas that are separated from one another. First data for safety-critical program modules is stored in the first memory area. Second data for safety-uncritical program modules is stored in the second memory area. The two memory areas are separated from one another. All access to these memory areas is controlled by a memory management unit.
摘要:
An electronics unit and a method for a filling-level measuring device for determining a filling level. The unit including an arithmetic unit determining a functional relationship between a distance between a filling material surface and the filling-level measuring device and an amplitude of a signal component reflected by the filling material surface and received by the filling-level measuring device; an amplitude profiler creating a profile of amplitude values of filling level echoes which have been measured so far; and an amplitude evaluator determining an expected amplitude of the filling level echo at a particular location with help of the profile of amplitude values.
摘要:
Described is a method for automatically initiating an update of a parasitic echo storage device in a fill level meter operating according to a runtime method. In this method individual echoes of echo curves of different ages are allocated, according to their typical echo characteristics, to global echo groups so that subsequently, after examining the behaviour over time of the echoes of the respective global echo curves, it can be judged whether the echoes of the respective global echo curves are useful echoes or parasitic echoes. Starting from this classification, the parasitic echo storage device is then updated with the oldest echoes of the corresponding global echo groups. Apart from the method for updating a parasitic echo storage device described is also an evaluation device for implementing the method as well as to a computer program and a computer program product for carrying out the method.
摘要:
Described is a method for a coarse differentiation between a liquid and a bulk material of a filling material present in a receptacle using a filling level measuring device that scans a reflected echo signal. The coarse differentiation is made in dependence on the width of the individual echoes of an envelope curve in an echo signal. Alternatively, the coarse differentiation may also be made in dependence on the number of equidistant echoes in an echo signal, or in dependence on the detection of a stirring apparatus. All these alternatives may also be combined with each other. Also described are devices and filling level measuring devices configured for the realization of the methods.
摘要:
A method and apparatus for non-contact determination of overfilling of a receptacle filled with a filling product generates an envelope curve from echo signals reflected on a filling product surface. An amplitude of the echo signals is mathematically processed in a predetermined short range of the envelope curve, and is compared to a predetermined reference value (x). When the amplitude exceeds the predetermined reference value (x), a signal representative of overfilling of the receptacle is outputted. Further, described are an evaluation arrangement for realizing the method and a filling level measuring device equipped with such an evaluation arrangement.
摘要:
An electronic module for level measurements, pressure measurements or density measurements is disclosed. In the module, a safety-relevant function is transferred into an area that is categorized as safety-uncritical. In order to prevent malfunctions, a diagnostic function is performed in the safety-critical area of the electronic module in order to check the transferred function. This diagnostic function is also checked with respect to its effectiveness during the safety-oriented operation. Suitable measures can be initiated in case an error is detected.
摘要:
A sensor includes an electronic module that comprises several electronic subassemblies and a processor that can be electrically coupled to the electronic subassemblies. The subassemblies respectively feature a programmable storage device with subassembly-specific data of the respective subassembly. The content of the respective programmable storage devices can be read out and evaluated by the processor.
摘要:
A method for generating a device description for a measuring apparatus in a target field bus protocol is described. The method comprises the reception of a first device description of the apparatus. The first device description of the apparatus comprises at least one variable. The at least one variable is related to a storage cell of the apparatus. The target field bus protocol is selected from a plurality of field bus protocols, and at least one block is formed from the at least one variable. The at least one block has a maximum block size that corresponds to the smallest maximum block size of at least two field bus protocols of the plurality of field bus protocols. The maximum block size can be transmitted via a field bus with a single request when the respective field bus protocol is used. Subsequently, the at least one block is provided as device description for the apparatus in the target field bus protocol.