Apparatus and Method for Diagnosing Communication Fault
First Claim
1. An apparatus for diagnosing a communication fault, comprising:
- a first slave module connected to each of a first communication line, a second communication line, and a third communication line, and configured to receive a synchronization signal from a master module through the first communication line, receive a first output signal from the master module through the second communication line, and transmit an input signal to the master module through the third communication line;
a second slave module connected to each of the first communication line, the second communication line and the third communication line in parallel with the first slave module, and configured to transmit a comparison signal that is different from the input signal to the master module through the third communication line; and
a master module configured to transmit the synchronization signal to the first slave module and the second slave module through the first communication line, transmit a second output signal to the second slave module through the second communication line, and diagnose whether a communication fault has occurred by comparing the input signal with the comparison signal.
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Accused Products
Abstract
Provided is an apparatus and method for diagnosing a communication fault. The apparatus includes a first slave module, a second slave module and a master module. The first slave module receives a synchronization signal through the first communication line and a first output signal through the second communication line, and transmits an input signal through the third communication line. The second slave module receives synchronization signal through the first communication line, and transmits a comparison signal to the master module through the third communication line when the second slave module receives a second output signal through the second communication line. The master module transmits the synchronization signal, the first output signal and the second output signal, and diagnose a communication fault by comparing a value of the comparison signal with a predetermined reference value or a value of the input signal.
3 Citations
11 Claims
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1. An apparatus for diagnosing a communication fault, comprising:
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a first slave module connected to each of a first communication line, a second communication line, and a third communication line, and configured to receive a synchronization signal from a master module through the first communication line, receive a first output signal from the master module through the second communication line, and transmit an input signal to the master module through the third communication line; a second slave module connected to each of the first communication line, the second communication line and the third communication line in parallel with the first slave module, and configured to transmit a comparison signal that is different from the input signal to the master module through the third communication line; and a master module configured to transmit the synchronization signal to the first slave module and the second slave module through the first communication line, transmit a second output signal to the second slave module through the second communication line, and diagnose whether a communication fault has occurred by comparing the input signal with the comparison signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for diagnosing a communication fault between a master module, a first slave module and a second slave module connected through each of a first communication line, a second communication line and a third communication line, the method comprising:
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transmitting, by the master module, a synchronization signal to the first slave module and the second slave module through the first communication line; selecting, by the master module, the first slave module from the first slave module and the second slave module, and transmitting a first output signal to the first slave module through the second communication line; generating, by the first slave module, an input signal corresponding to the first output signal, and transmitting the input signal to the master module through the third communication line, when the first slave module receives the synchronization signal and the first output signal; transmitting, by the master module, a second output signal to the second slave module through the second communication line, when the master module receives the input signal; generating, by the second slave module, a comparison signal, and transmitting the comparison signal to the master module through the third communication line, when the second slave module receives the second output signal; and diagnosing, by the master module, whether a communication fault has occurred by comparing the input signal with the comparison signal.
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11. A method for diagnosing a communication fault between a master module, a first slave module and a second slave module connected through each of a first communication line, a second communication line and a third communication line, the method comprising:
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transmitting, by the master module, a synchronization signal to the first slave module and the second slave module through the first communication line; selecting, by the master module, the first slave module from the first slave module and the second slave module; transmitting, by the master module, a first output signal to the first slave module through the second communication line; receiving, by the master module, an input signal from the first slave module through the third communication line in response to the master module transmitting the first output signal and the synchronization signal; transmitting, by the master module, a second output signal to the second slave module through the second communication line, when the master module receives the input signal; receiving, by the master module, a comparison signal from the second slave module through the third communication line, in response to the master module transmitting the second output signal; and diagnosing, by the master module, whether a communication fault has occurred by comparing the input signal with the comparison signal.
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Specification