System and method for indirectly detecting machine movement
First Claim
1. A method for indirectly detecting a movement of a machine and a failure of a speed sensor, comprising:
- receiving an operator input signal;
determining a first factor based the operator input signal;
measuring a machine operation parameter;
determining a second factor based on the machine operation parameter;
identifying a movement of the machine if the first factor is out of a first threshold range and the second factor is out of a second threshold range for at least a first threshold length of time; and
determining a speed sensor failure if the movement of the machine is identified and no speed is detected by the speed sensor for at least a second threshold length of time.
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Accused Products
Abstract
A method for indirectly detecting a movement of a machine and a failure of a speed sensor is disclosed. The method may include receiving an operator input signal, and determining a first factor based on the operator input signal. The method may also include measuring a machine operation parameter, and determining a second factor based on the machine operation parameter. The method may further include identifying a movement of the machine if the first factor is out of a first threshold range and the second factor is out of a second threshold range for at least a first threshold length of time. The method may also include determining a speed sensor failure if the movement the machine is identified and no speed is detected by the speed sensor for at least a second threshold length of time.
47 Citations
20 Claims
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1. A method for indirectly detecting a movement of a machine and a failure of a speed sensor, comprising:
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receiving an operator input signal; determining a first factor based the operator input signal; measuring a machine operation parameter; determining a second factor based on the machine operation parameter; identifying a movement of the machine if the first factor is out of a first threshold range and the second factor is out of a second threshold range for at least a first threshold length of time; and determining a speed sensor failure if the movement of the machine is identified and no speed is detected by the speed sensor for at least a second threshold length of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for indirectly detecting a movement of a machine and a failure of a speed sensor, comprising:
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receiving an operator input signal; determining a power command based on the operator input signal; measuring a hydrostatic pressure associated with a hydrostatic drive portion of the machine; identifying a movement of the machine if the power command exceeds a first threshold and the hydrostatic pressure falls below a second threshold for at least a first threshold length of time; and determining a speed sensor failure if the movement of the machine is identified and no speed is detected by the speed sensor for at least a second threshold length of time.
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13. An indirect machine movement detection system for detecting a movement of a machine and a failure of a speed sensor, comprising:
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an operator input device configured to receive an operator input signal; a sensor configured to measure a machine operation parameter; and a controller coupled to the operator input device and the sensor, and being configured to; receive the operator input signal from the operator input device; determine a first factor based on the operator input signal; receive the machine operation parameter from the sensor; determine a second factor based on the machine operation parameter; identify a movement of the machine if the first factor is out of a first threshold range and the second factor is out of a second threshold range for at least a first threshold length of time; and determine a speed sensor failure if the movement of the machine is identified and no speed is detected by the speed sensor for at least a second threshold length of time. - View Dependent Claims (14, 15, 16, 17)
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18. A machine, comprising:
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a power source; a speed sensor; and an indirect machine movement detection system coupled to the speed sensor, wherein the indirect machine movement detection system includes; an operator input device configured to receive an operator input signal; a sensor configured to measure a machine operation parameter; and a controller coupled to the operator input device and the sensor, and being configured to; identify a movement of the machine based on the operator input signal received from the operator input device and the machine operation parameter measured by the sensor; and determine a speed sensor failure if the movement of the machine is identified and no speed is detected by the speed sensor for at least a threshold length of time. - View Dependent Claims (19, 20)
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Specification