Load measuring device
First Claim
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1. A load measuring device, comprising:
- at least one strain gage;
a processing unit connected to the at least one strain gage and arranged to generate a digital signal responsive to receipt of a measurement signal from the at least one strain gage;
a bus interface coupled with the processing unit and arranged to connect with a bus and to transmit the digital signal to the bus; and
potential separation equipment connected between the bus interface and the at least one strain gage for electrically isolating the at least one strain gage from the bus interface.
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Abstract
A load measuring device, especially load cell, with one or more strain gages preferably connected in form of a bridge circuit, and feed lines for excitation of the strain gage and of the strain gages respectively and for signal derivation, with an integrated analogue/digital converter to convert the analogue measuring signals of the at least one strain gage into a digital signal, and with a bus interface to output the digital signal to a digital bus, the load measuring device comprising an equipment for potential separation between the bus interface and the at least one strain gage.
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Citations
21 Claims
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1. A load measuring device, comprising:
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at least one strain gage; a processing unit connected to the at least one strain gage and arranged to generate a digital signal responsive to receipt of a measurement signal from the at least one strain gage; a bus interface coupled with the processing unit and arranged to connect with a bus and to transmit the digital signal to the bus; and potential separation equipment connected between the bus interface and the at least one strain gage for electrically isolating the at least one strain gage from the bus interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A load measuring device, comprising:
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one or more strain gages; a processing unit connected to the one or more strain gages and arranged to convert a received analogue measurement signal from the one or more strain gages into a digital measurement signal; a bus interface connected to the processing unit and arranged to transmit the digital measurement signal and arranged to supply energy to the one or more strain gages; and an electrical isolator connected between the bus interface and the one or more strain gages and arranged to separate the electric potential of the bus interface from the electric potential of the one or more strain gages.
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Specification