US 12,130,614 B2
Field device energy management unit
Slava Friesen, Rülzheim (DE); and Robin Pramanik, Karlsruhe (DE)
Assigned to SIEMENS AKTIENGESELLSCHAFT, Munich (DE)
Filed by Siemens Aktiengesellschaft, Munich (DE)
Filed on Mar. 30, 2022, as Appl. No. 17/708,559.
Claims priority of application No. 102021203275 (DE), filed on Mar. 31, 2021.
Prior Publication US 2022/0317666 A1, Oct. 6, 2022
Int. Cl. G05B 19/418 (2006.01)
CPC G05B 19/4188 (2013.01) 19 Claims
OG exemplary drawing
 
1. A field device energy management unit for a field device with an energy store for temporarily storing energy for a load of the field device, said temporarily stored energy for the energy requirement of the load being greater than an amount of energy supplyable by the field device, the field device energy management unit field device energy management unit comprising:
a first current path connected or connectable to the energy store on an input side, a first diode being arranged on an output side of the first current path, and a cathode of the first diode being connected or connectable to the load of the field device;
at least one second current path connected or connectable to a voltage supply of the field device on the input side, a second diode being arranged on the output side of the at least one second current path, a cathode of the second diode being connected or connectable to the load of the field device;
wherein the first and the second diodes are operable such that, when energy consumption of the load is below a lower limit, the first diode is connected in the reverse direction and the second diode is connected in the forward direction and, when the energy consumption of the load is above the an upper limit, the first diode is connected in the forward direction.