摘要:
In order to detect a filling process, a signal is emitted into the container and an echo reflected from the container is recorded. At least one parameter, e.g., the amplitude h(t) of the reflected echo at a time t, is determined, and a filling process is detected if the parameter lies outside an expected range.
摘要:
A method and a device for directly digitizing microwave signals reflected on a filling product surface of a filling product present in a receptacle, wherein the microwave signals reflected on the filling product surface are scanned, and the analog values resulting from said scanning process are stored in an analog value storage means. The stored analog values are then read out from the analog value storage means at a lower rate as compared to the scanning rate, and are converted into digital values. The digital values may then be made available to an evaluation means for determining the filling level height.
摘要:
The invention relates to a measurement instrument, especially for level and pressure measurement with a controller (9), which is connected to a memory unit (8), an input unit (11), and also an output unit (12). Here, the output unit (12) is embodied as an acoustic output unit. According to the invention, operator and/or operating parameters are stored in the memory unit (8) and can be output as audible speech signals from the output unit (12) by activating the input unit (11).
摘要:
In order to simplify display and modification of parameters of a measuring device and make them uniform for different measuring devices, it is proposed to transfer from a memory on the measuring device to the operating unit, in addition to parameter values, representational data that defines the presentation of the parameter values on operating unit (5). An Internet browser, a word-processing program or a spreadsheet program is used at operating unit (5) to display and optionally modify the parameter values; the representational data is stored in the measuring device in a file with a format adapted to the program used.
摘要:
The invention relates to a method of determining expectancy ranges to which echoes from a filling level envelope curve are assigned, which curve has been generated by a filling level measurement device. The determination of these expectancy ranges takes place in consideration of the temporal behavior of past echo data. Since these expectancy ranges exhibit a predeterminable range width, a statement can be made with a predeterminable probability whether an echo—be it at filling level echo or a false echo—assigned to such a range, has been assigned erroneously to this range. When, for example, an expectancy range for a filling level echo has been prognosticated, then it may be assumed with a predeterminable probability that an echo falling within this expectancy range, actually is a filling level echo. The invention moreover relates to an evaluation means configured for carrying out this method and a level gauge. Furthermore, the present invention relates to a computer program and a computer program product including instructions for carrying out the method according to the invention.
摘要:
The invention relates to a measurement instrument, especially for level and pressure measurement with a controller (9), which is connected to a memory unit (8), an input unit (11), and also an output unit (12). Here, the output unit (12) is embodied as an acoustic output unit. According to the invention, operator and/or operating parameters are stored in the memory unit (8) and can be output as audible speech signals from the output unit (12) by activating the input unit (11).
摘要:
Described is a sensor unit having a measured signal receiver, which registers a measured signal, an A/D converter for digitizing the measured signal, a transceiver device for wireless data communication to an environmental device, and a processor. The processor is a control processor for activating the measured signal receiver, the A/D converter, and the transceiver device. The digitized measured signal is transmitted directly via the transceiver device to the environmental device, without the complex and performance-intensive and therefore costly analysis occurring in the sensor unit.
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.
摘要:
The present invention relates to a sensor unit (1) having a measured signal receiver (4), which registers a measured signal (9), an A/D converter (5) for digitizing the measured signal (9), a transceiver device (6) for wireless data communication to an environmental device (2), and a processor (7). The processor (7) is a control processor for activating the measured signal receiver, the A/D converter, and the transceiver device. The digitized measured signal (9) is transmitted directly via the transceiver device (6) to the environmental device (2), without the complex and performance-intensive and therefore costly analysis occurring in the sensor unit (1).
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.