Vehicle load backup circuit
First Claim
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1. A vehicle load backup device, comprising:
- an abnormality detection part which detects an abnormal operation of a processing part related to driving a load; and
a backup driving part which drives the load based on an output from the abnormality detection part when the abnormality detection part detects the abnormal operation of the processing part;
a reference voltage output part which outputs a reference voltage; and
a comparison part which compares an output voltage from the abnormality detection part with the reference voltage from the reference voltage output part, and outputs a predetermined signal when the output voltage from the abnormality detection part is larger than the reference voltage from the reference voltage output part,wherein the abnormality detection part outputs a voltage smaller than the reference voltage when the processing part operates normally, and outputs a voltage larger than the reference voltage when the processing part operates abnormally; and
wherein the backup driving part drives the load when the predetermined signal outputted from the comparison part is inputted into the backup driving part.
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Abstract
A load backup device includes an abnormality detection part which detects an abnormal operation of a processing part, and a backup driving part which drives a load based on an output from the abnormality detection part when the abnormality detection part detects the abnormal operation of the processing part.
5 Citations
11 Claims
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1. A vehicle load backup device, comprising:
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an abnormality detection part which detects an abnormal operation of a processing part related to driving a load; and a backup driving part which drives the load based on an output from the abnormality detection part when the abnormality detection part detects the abnormal operation of the processing part; a reference voltage output part which outputs a reference voltage; and a comparison part which compares an output voltage from the abnormality detection part with the reference voltage from the reference voltage output part, and outputs a predetermined signal when the output voltage from the abnormality detection part is larger than the reference voltage from the reference voltage output part, wherein the abnormality detection part outputs a voltage smaller than the reference voltage when the processing part operates normally, and outputs a voltage larger than the reference voltage when the processing part operates abnormally; and wherein the backup driving part drives the load when the predetermined signal outputted from the comparison part is inputted into the backup driving part. - View Dependent Claims (2, 3, 4, 5)
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6. A vehicle load backup device, comprising:
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an abnormality detection part which detects an abnormal operation of a processing part related to driving a load; and a backup driving part which drives the load based on an output from the abnormality detection part when the abnormality detection part detects the abnormal operation of the processing part; a reference voltage output part which outputs a reference voltage; and a comparison part which compares an output voltage from the abnormality detection part with the reference voltage from the reference voltage output part, and outputs a predetermined signal when the output voltage from the abnormality detection part is smaller than the reference voltage from the reference voltage output part, wherein the abnormality detection part outputs a voltage larger than the reference voltage when the processing part operates normally, and outputs a voltage smaller than the reference voltage when the processing part operates abnormally; and wherein the backup driving part drives the load when the predetermined signal outputted from the comparison part is inputted into the backup driving part. - View Dependent Claims (7, 8)
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9. A vehicle load backup method comprising:
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a determination step of determining whether or not a processing part operates normally; an abnormality detection step of outputting a voltage larger than a predetermined value when it is determined at the determination step that the processing part operates abnormally; a comparison step of comparing the voltage outputted at the abnormality detection step with a reference voltage; and a backup drive step of driving a vehicle load when the voltage outputted at the abnormality detection step becomes larger than the reference voltage. - View Dependent Claims (10, 11)
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Specification