Mixed signal conversion, isolation, and transmission for aerospace multi-channel data and power interface systems
First Claim
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1. An electrical power distribution system for a vehicle, comprising:
- two or more independently grounded buses; and
an evaluation system including a primary side grounded at a first grounding level Gp and a secondary side grounded at a second grounding level, the evaluation system selectively connectable to at least one of the two or more independently grounded buses,the primary side configured to transmit evaluation data to the secondary side;
a measuring device isolated from the primary side;
a high-voltage isolation device comprising a DC-DC converter configured to transmit high-voltage data from a connected one of the two or more independently grounded buses to the measuring device,a low-voltage isolation device configured to transmit communications data from the connected one of the two or more independently grounded buses to the measuring device, whereinthe measuring device isolated from the connected one of the two or more independently grounded buses while receiving data from the connected one of the two or more independently grounded buses; and
the primary side connectable to at least one of the two or more independently grounded buses so that, when connected, the grounding level of the primary side is equalized with a grounding level of the connected two or more independently grounded buses.
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Abstract
An electrical power distribution system for a vehicle may comprise two or more independently grounded buses. An evaluation system may selectively connectable to either of the buses. The evaluation system may comprise a primary side; and a secondary side isolated from the primary side. The primary side may be connected to transmit evaluation data to the secondary side. The primary side may be grounded at a primary grounding level. The primary side may be connectable to either of the buses so that, when connected, the grounding level of the primary side is equalized with a grounding level of the connected bus.
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Citations
16 Claims
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1. An electrical power distribution system for a vehicle, comprising:
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two or more independently grounded buses; and an evaluation system including a primary side grounded at a first grounding level Gp and a secondary side grounded at a second grounding level, the evaluation system selectively connectable to at least one of the two or more independently grounded buses, the primary side configured to transmit evaluation data to the secondary side; a measuring device isolated from the primary side; a high-voltage isolation device comprising a DC-DC converter configured to transmit high-voltage data from a connected one of the two or more independently grounded buses to the measuring device, a low-voltage isolation device configured to transmit communications data from the connected one of the two or more independently grounded buses to the measuring device, wherein the measuring device isolated from the connected one of the two or more independently grounded buses while receiving data from the connected one of the two or more independently grounded buses; and the primary side connectable to at least one of the two or more independently grounded buses so that, when connected, the grounding level of the primary side is equalized with a grounding level of the connected two or more independently grounded buses. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An isolating bus-evaluation system, comprising:
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a primary side; a measuring device isolated from the primary side, wherein; the primary side is configured to successively connect to two or more buses so that, for the connected two or more buses, a ground level of the primary side is equivalent to a ground level of the connected two or more buses; and the measuring device remains isolated from the connected two or more buses while receiving data from the connected two or more buses; a high-voltage isolation device including a DC-DC converter configured to transmit high-voltage data from a connected one of the two or more buses to the measuring device; and a low-voltage isolation device configured to transmit low voltage data from the connected two or more buses to the measuring device. - View Dependent Claims (8, 9, 10, 11)
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12. A method for evaluating condition of electrical distribution buses in a vehicle, comprising:
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connecting an evaluation system to a first bus so that grounding levels of the first bus and the evaluation system are equalized; performing evaluation measurements on the first bus with the evaluation system; connecting the evaluation system to a second bus so that grounding levels of the second bus and the evaluation system are equalized; and performing evaluation measurements on the second bus with the evaluation system, wherein performing the evaluation measurements on the first bus or the second bus includes; connecting the first or second bus to a primary side of high-voltage isolating converter; connecting the first or second bus to a sampling device to produce low-voltage current proportional to bus voltage of the first or second bus; passing the low-voltage current to a primary side of a low-voltage isolating converter; passing high-voltage data from a secondary side of the high-voltage converter to a measuring device; and passing low-voltage data from a secondary side of the low-voltage converter to the measuring device. - View Dependent Claims (13, 14, 15, 16)
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Specification