Trouble checking apparatus
First Claim
1. An apparatus for use with a device having at least one means for controlling the device, the apparatus comprising:
- sensor means sensitive to operating conditions of the device for generating sensor signals indicative of sensed device operating conditions;
a control unit including a first control memory, means responsive to the sensor signals for generating existing values of the sensor signals, means for calculating a value corresponding to a setting of the means for controlling the device from a relationship between the generated existing sensor signal values and the means for controlling the device, the calculating being performed repetitively at uniform intervals, means for converting the calculated value into a setting of the means for controlling the device, means for storing the generated existing sensor signal values in time sequence into the first control memory to provide input data representing variations of the respective sensor signals with time, and means for storing the calculated value in time sequence into the first control memory to provide output data representing variations of the setting of the means for controlling the device with time; and
an analyzing unit including a first analyzer memory, means for manually generating a command signal, means responsive to the command signal for transferring the input and output data from the first control memory to the first analyzer memory, and means for analyzing the input and output data transferred to the first analyzer memory to find a cause of a trouble in the operation of the device.
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Accused Products
Abstract
An apparatus for analyzing control data for finding a cause of a trouble produced in a device controlled with a plurality of controlled variables. The apparatus includes sensors sensitive to a condition of the device for producing signals indicative of parameters reflective of the sensed condition. The parameter indicative signals are fed to a control circuit which calculates a valve corresponding to a setting of each of the controlled variables from a desired relationship. The calculated values are stored in time sequence along with the corresponding values of the parameter indicative signals. The stored values are transferred from the first memory to a second memory upon occurrence of a command signal indicating a trouble produced in the device. The transfer values are analyzed to find a cause of the trouble.
27 Citations
16 Claims
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1. An apparatus for use with a device having at least one means for controlling the device, the apparatus comprising:
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sensor means sensitive to operating conditions of the device for generating sensor signals indicative of sensed device operating conditions; a control unit including a first control memory, means responsive to the sensor signals for generating existing values of the sensor signals, means for calculating a value corresponding to a setting of the means for controlling the device from a relationship between the generated existing sensor signal values and the means for controlling the device, the calculating being performed repetitively at uniform intervals, means for converting the calculated value into a setting of the means for controlling the device, means for storing the generated existing sensor signal values in time sequence into the first control memory to provide input data representing variations of the respective sensor signals with time, and means for storing the calculated value in time sequence into the first control memory to provide output data representing variations of the setting of the means for controlling the device with time; and an analyzing unit including a first analyzer memory, means for manually generating a command signal, means responsive to the command signal for transferring the input and output data from the first control memory to the first analyzer memory, and means for analyzing the input and output data transferred to the first analyzer memory to find a cause of a trouble in the operation of the device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for use with an internal combustion engine having a plurality of means for controlling the engine, the apparatus comprising:
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sensor means sensitive to operating conditions of the engine for generating sensor signals indicative of sensed device engine operating conditions; a control unit including a first control memory, means responsive to the sensor signals for generating existing values of the sensor signals, means for calculating a value corresponding to a setting of each of the means for controlling the engine from a relationship between the generated existing sensor signal values and the means for controlling the engine, the calculating being performed repetitively at uniform intervals, means for converting the calculated value into a setting of the corresponding one of the means for controlling the engine, means for storing the generated existing sensor signal values in time sequence into the first control memory to provide input data representing variations of the respective sensor signals with time, and means for storing the calculated values in time sequence into the first control memory to provide output data representing variations of the respective settings of the means for controlling the engine with time; and an analyzing unit including a first analyzer memory, means for manually generating a command signal, means responsive to the command signal for transferring the input and output data from the first control memory to the first analyzer memory, and means for analyzing the input and output data transferred to the first analyzer memory to find a cause of a trouble in the operation of the engine. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification