Endress+hauser Conducta Gesellschaft Fur Mess- Und Regeltechnik Mbh+co. Kg

Endress+hauser Conducta Gmbh+co. Kg

Tobias Mieth

Sven-Matthias Scheibe

Torsten Pechstein

Stefan Robl

Martin Lohmann

Stefan Pilz

Stephan Buschnakowski

Ulrich Kaiser

Jörg Uhle

Lothar Auerswald

Reinhard Weiss

Stephen Buschnakowski

Jochen Betz

The disclosure relates to a method for communication in process automation between a sensor and a connecting element connectable to the sensor, wherein the sensor is configured for acquisition of a measured variable of the process automation and for transmission of a value that is dependent upon the measured variable value to the connecting element, wherein the connecting element for transmission of the value dependent upon the measured variable to a parent unit is configured via a first protocol. The method is characterized in that communication between the sensor and the connecting element takes place without the knowledge of the parent unit using a second protocol, the second protocol being independent of the first protocol.

Method for communication between a sensor and a connecting element

A sensor module includes a sensor element with a transducer for emitting an electric analog primary signal, which depends on a measured value; and a circuit assembly for conditioning the primary signal and for unidirectional data communication of a digital signal, which depends on the primary signal, to a superordinated unit. The circuit assembly has the following components: a signal input for receiving the primary signal, which depends on the measured value; a secondary side, inductively coupling, plug connector element for connection to a primary side, inductively coupling, plug connector element of the superordinated unit for receiving an energy signal and for transferring a measurement signal; an energy supply circuit, which rectifies the energy signal and provides at least one direct voltage for supplying the sensor module components; an analog signal conditioning circuit for conditioning the primary signal to a secondary signal; an analog-digital converter for converting the secondary signal to a digital measurement signal; a modulator for modulating the received energy signal for transferring the measurement signal to a superordinated unit by means of load modulation; and a microcontroller for controlling the components of the circuit assembly.

Modular measuring device with distributed data and algorithms

A cable circuit includes a contactless interface for signal transmission between the cable circuit and the sensor module, wherein the sensor module is galvanically isolated from the cable circuit, and wherein signal transmission between the cable circuit and the sensor module occurs on an optical, inductive or capacitive path. Additionally, the cable circuit includes a signal processing unit, as well as a cable interface for connecting a cable, which connects the cable circuit with the measurement transmitter. The signal processing unit is integrated into the signal path. The signal processing unit is embodied to receive, via the cable interface, signals from the measurement transmitter, to condition them and to transmit them via the contactless interface to the sensor module, and to receive, via the contactless interface, signals from the sensor module, to condition them and to transmit them via the cable interface to the measurement transmitter.

Cable circuit with digital signal conditioning

A sensor for registering analyte concentration includes: a housing; arranged within the housing, a sensor element, which has a front surface pressed toward a housing wall of the housing, and the sensor element has at least one contact element for electrical contacting accommodated within the housing, an inner electrolyte, which is in contact with a medium surrounding the housing via an electrochemical, liquid junction arranged in a housing wall, and a reference electrode extending into the inner electrolyte, wherein there is arranged within the housing a flexible circuit card, which includes at least a first conductive trace, which is connected with the at least one contact element of the sensor element, and at least a second conductive trace, which serves as potential sensing element of the reference electrode.

Sensor for registering an analyte concentration

Method for operating a measuring point having a base unit and a sensor unit, wherein the latter couples via a pluggable connector coupling with the base unit; the base unit serves for energy supply of the sensor unit, for data exchange with the sensor unit and for communication with a process monitoring installation, wherein the base unit includes: A first element of the pluggable connector coupling; a first microprocessor sensor data conditioning for communication with the process monitoring installation; a first data memory for saving measuring-point-specific data; wherein the sensor unit has a primary sensor and a sensor head; the primary sensor includes a transducer, which outputs a measured variable dependent signal; wherein the sensor head includes: A circuit for conditioning the transducer signals with an A/D converter and a second microprocessor for measurement signal processing, a second data memory for sensor data; a program memory which contains a firmware; and an interface with a second element of the pluggable connector coupling; wherein a software module is transmitted from the base unit to the sensor unit and is stored in the program memory of the sensor unit, for enabling supplementary functions for primary sensor monitoring.

Method for transmitting a software module to a measuring point

A cable circuit for connecting a sensor module to a measurement transmitter. The cable circuit includes a contactless interface for signal transmission between the cable circuit and the sensor module, wherein the sensor module is galvanically isolated from the cable circuit, and wherein signal transmission between the cable circuit and the sensor module occurs on an optical, inductive or capacitive path. Additionally, the cable circuit includes a signal processing unit, as well as a cable interface for connecting a cable, which connects the cable circuit with the measurement transmitter. The signal processing unit is integrated into the signal path. The signal processing unit is embodied to receive, via the cable interface, signals from the measurement transmitter, to condition them and to transmit them via the contactless interface to the sensor module, and to receive, via the contactless interface, signals from the sensor module, to condition them and to transmit them via the cable interface to the measurement transmitter.

Growing community of inventors

Dresden, Germany

Tobias Mieth