Endress+hauser Conducta Gmbh+co. Kg

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

Stefan Pilz

Sven-Matthias Scheibe

Sebastian Geissler

Michael Hanko

Detlev Wittmer

Torsten Pechstein

Thomas Pfauch

Björn Haase

Andreas Löbbert

Stefan Paul

Stephan Buschnakowski

Jörg Uhle

Hendrik Zeun

Tobias Mieth

Jörg Giebson

Disclosed is a sensor comprising a sensor element that detects a measurand, the sensor element being in electrical contact with a sensor circuit that processes values derived from data from a secondary coil and/or from the measurand. The sensor circuit is in electrical contact with an ex-circuit. The sensor circuit is supplied a maximum input voltage and a maximum input current. The ex-circuit includes the secondary coil that receives an electrical signal from a primary coil. The electrical signal includes the data that are modulated onto the electrical signal. The sensor also includes a voltage limit that limits the voltage of the electrical signal to the maximum input voltage of the sensor circuit and a current limit that limits the current of the electrical signal to the maximum input current of the sensor circuit. Also disclosed are a sensor arrangement and a use of a sensor.

Sensor and sensor arrangement

The present disclosure relates to a sensor and sensor mounting comprising a housing having an end section, wherein the end section is designed for mounting of the sensor. First communication capabilities are arranged in the housing and are designed for the wireless transmission of power to the sensor and for the wireless transmission and reception of data to and from the sensor. First retaining capabilities are designed to hold the sensor in the end section, and connecting capabilities, which are connected at least to the communication capabilities, are designed to connect the sensor mounting to a superordinate unit.

Sensor mounting, sensor and sensor arrangement

A sensor system comprises a first mobile sensor unit and a stationary sensor unit. The first mobile sensor unit has a first sensor for acquiring a first measured value and a first wireless communication unit for receiving a calibration value and for transmitting the first measured value. The stationary sensor unit has a second sensor for acquiring a second measured value and a second wireless communication unit for transmitting the calibration value and for receiving the first measured value.

Sensor system for mobile acquisition of at least one measured value and measuring method for such a sensor system

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

The invention discloses an intrinsically safe field device for process automation technology, comprising: at least one sensor element for detecting at least one measurand; a secondary coil for transmitting and receiving data&#x2014;in particular, values derived from the measurand&#x2014;from a primary coil, and for receiving power from the primary coil, wherein the secondary coil comprises first and second connections; a second coupling body that is designed to be complementary to a first coupling body, wherein the second coupling body comprises the secondary coil; and a circuit assembly that is arranged downstream of the secondary coil. Within the circuit assembly, Zener diodes are connected upstream of rectifier diodes.

Intrinsically safe sensor for process automation technology

The present disclosure discloses a connection element comprising an essentially cylindrical core, a primary coil for transmission and reception of data and/or for transmission of energy from or to a secondary coil, wherein the primary coil surrounds the core, and a first coupling body with a first segment and a second segment, wherein the second segment comprises the primary coil. In the connection element, the core at one end comprises a first magnetic body that is greater in diameter than the core and extends into the first segment. The present disclosure likewise discloses a sensor, as well as a sensor connection element including such a sensor and such a connection element.

Connection element, sensor, and sensor arrangement for process automation

Described is a circuit for supplying power to an electric load connected to the circuit via an interface, and for receiving desired signals transmitted from the electric load by an amplitude modulation, performed by the electric load, of a carrier signal transmitted from the circuit via the interface, said carrier signal serving to supply power to the electric load, with a carrier signal generator that comprises a direct voltage source and a DC-AC converter downstream of the direct voltage source, and with a demodulator for extraction of desired signals modulated by the electric load on the carrier signal, which circuit has a high efficiency without the use of choke coils. The demodulator is designed to extract the desired signals using a current corresponding to a carrier signal current flowing through a current path of the circuit during a transmission of the desired signals, said carrier signal current flowing across the interface.

Circuit for supplying power to an electric load, and for receiving desired signals sent from the electric load

The present disclosure relates to a method and a corresponding circuit for the fault detection of an electrical circuit, wherein the electrical circuit includes a first inductive interface, at least a first branch, and a second branch, wherein the first and the second branches are connected in parallel, wherein the first branch includes two parallel and counter-currently-connected diodes, and wherein the first and second branches are connected to the first inductive interface. The method includes applying an alternating voltage or an alternating current across the first inductive interface via a second inductive interface, wherein the applied voltage or current is low enough that essentially no current flows through either the first or the second diode; measuring the impedance across the first inductive interface via the second inductive interface; and determining whether a fault is present in the second branch.

Method for fault detection of an electrical circuit, and an electrical circuit

An electronic circuit for demodulating a carrier signal, for modulating a wanted signal and for supplying a consumer with power. The carrier signal is an alternating signal having a positive half-wave and a negative half-wave, comprising: a galvanically isolating, especially an inductive, interface with a first contact and a second contact, wherein the carrier signal is applied to the interface; a bridge rectifier having a first diode, second diode, third diode and fourth diode connected to the interface. The first diode and the second diode are conducting in the case of a positive half-wave, wherein the first contact of the interface is connected with the anode of the first diode, wherein the third diode and the fourth diode are conducting in the case of a negative half-wave, and wherein the second contact of the interface is connected with the anode of the third diode; a supply circuit, which is connected to the cathode of the first diode. A demodulation circuit is provided, which is connected to the cathode of the third diode; a modulation circuit, which is connected with the first contact; and the consumer, wherein the output of the demodulation circuit and the output of the supply circuit are connected with the consumer. The invention relates further to a field device comprising at least one such circuit as well as to a method.

Electronic circuit, field device comprising at least one such electronic circuit and method

A plug connecting unit for connecting a cable circuit in a cable circuit housing with a sensor module in a sensor module housing, comprising a wireless interface for energy- and/or data transmission between the cable circuit and the sensor module. A first section of the wireless interface is arranged in the cable circuit and a second section of the wireless interface is arranged in the sensor module. The wireless interface is surrounded by a magnetic shielding and the magnetic shielding is arranged in the cable circuit housing and/or in the sensor module housing.

Plug connecting unit for connecting a cable circuit with a sensor module

An electronic circuit for amplifying a wanted signal, comprising: a comparator having a first input, a second input and an output, wherein a connection is provided, which leads the wanted signal to the first input; a first driver stage comprising an input and an output, wherein the first driver stage includes at least a first push pull end stage; a low-pass filter having an input and an output, wherein the output of the first driver stage leads to the input of the low pass filter; a first feedback network; and a second feedback network.

Electronic Circuit

An electronic circuit for transmitting an ASK signal, wherein the ASK signal transmits data and energy between a first side having a first interface, and a second side having a second interface corresponding to the first interface. The first interface and the second interface are embodied for transmitting data and energy, and the first interface and the second interface are embodied as galvanically separated interfaces, comprising a converting apparatus for transforming data, especially a digital data signal, into an analog wanted signal; a carrier source for producing a carrier signal having a carrier frequency; a resonator circuit for merging the carrier signal with the wanted signal to form the ASK signal with an amplitude. The resonator circuit is so embodied that it is excited by the carrier signal to execute periodic oscillations, wherein the ASK signal includes the wanted signal and the periodic oscillations, and wherein essentially the wanted signal determines the amplitude of the ASK signal. A measurement circuit for measuring the power of the ASK signal; and a data processing unit, which is so embodied that it controls the transmission of the ASK signal, wherein the controlled variable is the measured power of the ASK signal, and wherein the manipulated variable is the carrier frequency. The invention relates further to a method.

Electronic circuit and method for transmitting an ASK signal

An electronic circuit comprising a rectifier which passes only one polarity of a carrier signal; at least one filter, subsequent to the rectifier, for the suppression of at least one frequency range of the carrier signal; a voltage matching network, subsequent to the filter, which is embodied so that it matches the voltage of the desired signal, and leads to one of the two inputs of a comparator, wherein an output of the comparator is switched, depending on the difference between the two inputs, and a feedback network connected in parallel with the comparator, wherein the feedback network connects one of the two inputs of the comparator with the output of the comparator, the feedback network comprises a high-pass characteristic. The invention furthermore comprises a method for the recovering of desired signals from a carrier signal by demodulation and a modem.

Electronic circuit and method for recovering desired signals from carrier signals by demodulation as well as a modem

An arrangement with a superordinated control unit and at least one intelligent field device connectable with the control unit, wherein associated with the control unit is at least one interface with a connection element for accommodating a corresponding connection counterpart. The connection counterpart is associable with an interface module, wherein associated with the interface module is a software protection system securing accessing of the field device. The interface module permits communication between the corresponding field device and the superordinated control unit, wherein associated with the superordinated control unit is a software-protected processing program for the field device, and wherein the processing program is started or enabled via the software protection system, when the connection counterpart of the interface module of the field device is connected with the connection element of the control unit.

Growing community of inventors

Geithain, Germany

Stefan Pilz