Method for energy management of a field device of process automation

Patent metadata

Field	Value
Publication number	US-10437216-B2
Application number	US-201615758383-A
Country	US
Kind code	B2
Filing date	Aug 12, 2016
Priority date	Sep 10, 2015
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

The invention relates to a method for energy management of a process automation field device having a first module and at least a second module, wherein the field device is supplied with energy by a two conductor bus, wherein the first module, at least temporarily, consumes more energy than the two conductor bus continuously delivers, and an energy storer supplied by the two conductor bus is associated with the first module, wherein the second module is supplied continuously with energy by the two conductor bus, wherein operation of the first and second modules is so controlled that the second module has precedence over the first module and the first module is, in given cases, at least temporarily, not functional.

First claim

The invention claimed is:

1. A method for energy management of a process automation field device having a first module and at least a second module,
wherein the field device is supplied with energy by a two conductor bus,
wherein the first module, at least temporarily, consumes more energy than the two conductor bus continuously supplies, and an energy storer supplied with energy by the two conductor bus is associated with the first module,
wherein the second module is supplied continuously with energy by the two conductor bus, the method comprising:
controlling an operation of the first module and the second module such that the second module has energy precedence over the first module and the first module is at least temporarily not functional; and
the second module isolating the energy storer from the two conductor bus during the operation of the second module.

2. The method as claimed in claim 1 ,
wherein the second module has no energy storer and is continuously supplied with energy by the two conductor bus.

3. The method as claimed in claim 1 , further comprising:
the second module informing the first module of the second module's operation and the first module adapting the first module's operation such that an entire required energy of the field device can be provided by the two conductor bus.

4. The method as claimed in claim 1 ,
wherein the first module includes a sensor element configured to register a measured variable and to forward values to a wireless module,
wherein the second module includes the wireless module, and
wherein the wireless module is embodied to wirelessly transmit the values to a superordinated unit.

5. The method as claimed in claim 4 ,
wherein in the case of a maximum transmission power of the wireless module, the entire required energy of the field device can be provided by the two conductor bus.

6. The method as claimed in claim 4 ,
wherein the sensor element is an ISFET or is a sensor element configured to measure a fill level according to the radar-principle, a pH-value, a redox potential, a conductivity, a turbidity or an oxygen content.

Assignees

• Endress Hauser Se Co Kg

Inventors

• Seiler Christian
• Klöfer Peter

Classifications

• G05B2219/25428

  Field device · CPC title

• G05B2219/25357

  Regulation of energy coupling · CPC title

• G05B2219/25289

  Energy saving, brown out, standby, sleep, powerdown modus for microcomputer · CPC title

• G05B19/042 Primary

  using digital processors (G05B19/05 takes precedence) · CPC title

• G05B19/4185

  characterised by the network communication · CPC title