Electrical and/or electronic supply circuit and method for providing a supply voltage
First Claim
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1. An arrangement comprising:
- an electrical and/or electronic supply circuit that provides a supply voltage, which serves to output a first value of the supply voltage when the supply voltage is derived from a first voltage source and a second value of the supply voltage when the supply voltage is derived from a second voltage source, wherein said second voltage source is a chargeable energy storer andan operating electronics for a radio unit for a plant of process automation technology which serves for the functions of the radio unit and provides a voltage for the supply of a field device which is connectable to said radio unit; and
a detection circuit in said operating electronics which measures the values of the supply voltage and sets said operating electronics to different operating modes based on the measured value;
wherein, in the case in which the supply voltage is delivered from the second voltage source a radio connection via the radio unit is uninterrupted for a predetermined period of time and wherein said field device connected to the radio unit is switched off to save energy.
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Abstract
An electrical and/or electronic supply circuit, which serves to provide a first or a second, essentially constant value of a supply voltage, which supply voltage serves to operate an operating electronics. The supply circuit serves to output the first value of the supply voltage when the supply voltage is derived from a first voltage source, and the supply circuit serves to output the second value of the supply voltage when the supply voltage is derived from a second voltage source.
11 Citations
11 Claims
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1. An arrangement comprising:
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an electrical and/or electronic supply circuit that provides a supply voltage, which serves to output a first value of the supply voltage when the supply voltage is derived from a first voltage source and a second value of the supply voltage when the supply voltage is derived from a second voltage source, wherein said second voltage source is a chargeable energy storer and an operating electronics for a radio unit for a plant of process automation technology which serves for the functions of the radio unit and provides a voltage for the supply of a field device which is connectable to said radio unit; and a detection circuit in said operating electronics which measures the values of the supply voltage and sets said operating electronics to different operating modes based on the measured value;
wherein, in the case in which the supply voltage is delivered from the second voltage source a radio connection via the radio unit is uninterrupted for a predetermined period of time and wherein said field device connected to the radio unit is switched off to save energy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for providing a supply voltage, by means of which supply voltage an operating electronics of a radio unit for a plant of process automation technology is operated, said radio unit provides a voltage for the supply of a field device which is connected to the radio unit, comprising the steps of:
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a first value of a supply voltage is output when the supply voltage is derived from a first voltage source; a second value of a supply voltage is output when the supply voltage is derived from a second voltage source; and measuring the values of the supply voltage and sets said operating electronics to different operating modes based on the measured value, wherein; in the case in which the supply voltage is delivered from the second voltage source a radio connection via said radio unit is uninterrupted for a predetermined period of time; and said field device connected to the radio unit is switched off.
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Specification