Vehicle network health assessment
First Claim
1. A method, comprising:
- sending, via a computer processor, a request to a gateway device to initiate a diagnostic test for a vehicle network, the request including an instruction to measure, for a predefined period of time, a voltage produced by the gateway device during the diagnostic test, the gateway device communicatively coupled to the vehicle network and the computer processor;
converting the request to a probe signal, via the gateway device, and asserting the probe signal at differential bus lines of the vehicle network, the probe signal configured to activate a node on the vehicle network to a dominant state;
measuring, for the predefined period of time, a voltage at a high level bus line of the differential bus lines and measuring a voltage at a low level bus line of the differential bus lines;
calculating a difference between the voltage measured at the high level bus line and the voltage measured at the low level bus line;
comparing the difference to a predetermined norm voltage value; and
determining a health status of the vehicle network as a function of the comparing.
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Accused Products
Abstract
Determining a vehicle health status includes sending a request to a gateway device to initiate a diagnostic test for a vehicle network. The request includes an instruction to measure, for a predefined period of time, a voltage produced by the gateway device. The vehicle health status is further determined by converting the request to a probe signal, and asserting the probe signal at differential bus lines of the vehicle network. The health status is further determined by measuring, for the predefined period of time, a voltage at a high level bus line and a voltage at a low level bus line of the differential bus lines, calculating a difference between the voltage measured at the high level bus line and the voltage measured at the low level bus line, and comparing the difference to a predetermined norm voltage value, the results of which indicate the health status.
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Citations
20 Claims
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1. A method, comprising:
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sending, via a computer processor, a request to a gateway device to initiate a diagnostic test for a vehicle network, the request including an instruction to measure, for a predefined period of time, a voltage produced by the gateway device during the diagnostic test, the gateway device communicatively coupled to the vehicle network and the computer processor; converting the request to a probe signal, via the gateway device, and asserting the probe signal at differential bus lines of the vehicle network, the probe signal configured to activate a node on the vehicle network to a dominant state; measuring, for the predefined period of time, a voltage at a high level bus line of the differential bus lines and measuring a voltage at a low level bus line of the differential bus lines; calculating a difference between the voltage measured at the high level bus line and the voltage measured at the low level bus line; comparing the difference to a predetermined norm voltage value; and determining a health status of the vehicle network as a function of the comparing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system, comprising:
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a computer processor; a gateway device communicatively coupled to the computer processor and to a vehicle network of a vehicle; and an application executable by the computer processor, the application configured to implement a method, the method comprising; sending, via the computer processor, a request to the gateway device to initiate a diagnostic test for the vehicle network, the request including an instruction to measure, for a predefined period of time, a voltage produced by the gateway device during the diagnostic test; converting the request to a probe signal, via the gateway device, and asserting the probe signal at differential bus lines of the vehicle network, the probe signal configured to activate a node on the vehicle network to a dominant state; measuring, for the predefined period of time, a voltage at a high level bus line of the differential bus lines and measuring a voltage at a low level bus line of the differential bus lines; calculating a difference between the voltage measured at the high level bus line and the voltage measured at the low level bus line; comparing the difference to a predetermined norm voltage value; and determining a health status of the vehicle network as a function of the comparing. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A computer program product comprising a computer-readable storage medium embodied with program code, which when executed by a computer processor, causes the computer processor to implement a method, the method comprising:
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sending, via the computer processor, a request to a gateway device to initiate a diagnostic test for a vehicle network, the request including an instruction to measure, for a predefined period of time, a voltage produced by the gateway device during the diagnostic test, the gateway device communicatively coupled to the vehicle network and the computer processor; converting the request to a probe signal, via the gateway device, and asserting the probe signal at differential bus lines of the vehicle network, the probe signal configured to activate a node on the vehicle network to a dominant state; measuring, for the predefined period of time, a voltage at a high level bus line of the differential bus lines and measuring a voltage at a low level bus line of the differential bus lines; calculating a difference between the voltage measured at the high level bus line and the voltage measured at the low level bus line; comparing the difference to a predetermined norm voltage value; and determining a health status of the vehicle network as a function of the comparing. - View Dependent Claims (20)
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Specification