Method and apparatus for indicating a changed condition
First Claim
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1. An apparatus for indicating a changed condition in a diagnostic system, comprising:
- a plurality of sensor means for sensing a plurality of parameters and responsively producing a plurality of sensor signals, each of said sensor signals being in one of a normal state or a fault condition; and
processing means for receiving each of said plurality of sensor signals and responsively determining whether one or more of said plurality of sensor signals have changed from said normal state to said fault condition or from said fault condition to said normal state, said processing means including means for producing a transient signal and a recorded diagnostic signal in response to one or more of said sensor signals changing from said normal state to said fault condition or from said fault condition to said normal state.
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Abstract
Systems for diagnosing fault conditions in a plurality of inputs are useful in many applications. Advantageously, such systems allow troubleshooting by a single technician. The subject invention includes a plurality of sensors for producing sensor signals, each of the sensor signals indicating one of plurality of states of a parameter. A device is included to indicate that one or more of the sensor signals has changed states.
95 Citations
44 Claims
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1. An apparatus for indicating a changed condition in a diagnostic system, comprising:
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a plurality of sensor means for sensing a plurality of parameters and responsively producing a plurality of sensor signals, each of said sensor signals being in one of a normal state or a fault condition; and processing means for receiving each of said plurality of sensor signals and responsively determining whether one or more of said plurality of sensor signals have changed from said normal state to said fault condition or from said fault condition to said normal state, said processing means including means for producing a transient signal and a recorded diagnostic signal in response to one or more of said sensor signals changing from said normal state to said fault condition or from said fault condition to said normal state. - View Dependent Claims (2, 3)
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4. An apparatus for indicating a changed condition in a diagnostic system, comprising:
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an audio warning means for producing an audible signal; a plurality of sensor means for sensing a plurality of parameters and responsively producing a plurality of sensor signals, each of said sensor signals indicating one of a plurality of states; and signalling means for causing said audio warning means to produce said audible signal in response to one of said sensor signals changing states. - View Dependent Claims (5)
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6. An apparatus, for indicating a changed condition in a diagnostic system, comprising:
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an audio warning means for producing an audible signal; a plurality of sensor means for sensing a plurality of parameters and responsively producing a plurality of sensor signals, each of said sensor signals indicating one of a plurality of states; signalling means for causing said audio warning means to produce said audible signal in response to one of said sensor signals changing states; a plurality of sensor inputs being connected to said plurality of sensor means; means for indicating a plurality of present or previous fault conditions on said sensor inputs; and service means for isolating one of said inputs having a present or previous fault condition and wherein said signalling means causes said audio warning means to produce said audible signal in response to only the isolated input changing from a fault condition to a normal state or from said normal state to said fault condition. - View Dependent Claims (7)
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8. An apparatus for indicating a changed condition in a diagnostic system, comprising:
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a plurality of sensor means for sensing a plurality of parameters and responsively producing a plurality of sensor signals, each of said sensor signals being in one of a normal state or a fault condition and having an associated pin number; means for receiving each of said sensor signals and responsively determining whether one or more of said sensor signals have changed from said normal state to said fault condition or from said fault condition to said normal state; and display means for indicating each pin number associated with a sensor signal having changed from said normal state to said fault condition or from said fault condition to said normal state. - View Dependent Claims (9, 10, 11, 12)
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13. An apparatus for indicating a changed condition, comprising:
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display means for indicating the level of a plurality of parameters and the presence of one or more of a plurality of fault or warning conditions, said display means being operable in a normal display mode and a diagnostic mode; an audio warning means for producing an audible signal; sensor means for sensing a plurality of conditions and responsively producing a plurality of sensor signals each indicating one of a fault condition and a normal state; and signalling means for causing said audio warning means to produce said audible signal in response to one or more of said sensor signals indicating a warning condition and said display means being in said normal display mode and in response to one or more of said plurality of sensor signals changing from said fault condition to said normal state or from said normal state to said fault condition and said display means being in said diagnostic mode. - View Dependent Claims (14, 15, 16)
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17. An apparatus for indicating a changed condition, comprising:
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display means for indicating the level of a plurality of parameters and the presence of one or more fault or warning conditions, said display means being operable in a normal display mode and a diagnostic mode; a plurality of sensor means for sensing a plurality of parameters and responsively producing a plurality of sensor signals, each of said sensor signals being in one of a normal state or a fault condition and having an associated pin number; and signalling means for causing said display means to indicate said level of said plurality of sensed parameters in response to said display means being in said normal display mode and to indicate, in response to said display means being in said diagnostic mode, each pin number being associated with a sensor signal having changed from said fault condition to said normal state or from said normal sate to said fault condition. - View Dependent Claims (18, 19, 20, 21, 22)
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23. An apparatus for indicating a changed condition, comprising:
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display means for indicating the level of a plurality of parameters and the presence of one or more fault or warning conditions, said display means being operable in a normal display mode and a diagnostic mode; an audio warning means for producing an audible signal; a plurality of sensor means for sensing a plurality of parameters and responsively producing a plurality of sensor signals, each of said sensor signals being in one of a normal state or a fault condition and having an associated pin number; and signalling means for causing said audio warning means to produce said audible signal in response to one or more of said sensor signals changing from said fault condition to said normal state or from said normal state to said fault condition and said display means being in said diagnostic mode and for causing said display means to indicate said level of said plurality of sensed parameters in response to said display means being in said normal display mode and, in response to said display means being in said diagnostic mode, to indicate each pin number being associated with a sensor signal having changed from said fault condition to said normal state or from said normal state to said fault condition. - View Dependent Claims (24, 25, 26, 27, 28, 29)
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30. A method for indicating a changed condition in a diagnostic system, comprising the steps of:
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sensing a plurality of parameters and responsively producing sensor signals, each of said sensor signals indicating one of a plurality of states, said plurality of states including one or more normal states and one or more fault conditions; and producing an audible signal in response to one of said sensor signals changing from one of said fault conditions to one of said normal states or from one of said normal states to one of said fault conditions. - View Dependent Claims (31, 32, 33)
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34. A method for indicating a changed condition in a diagnostic system, comprising the steps of:
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sensing a plurality of parameters and responsively producing sensor signals, each of said sensor signals being in one of a normal state or a fault condition and having an associated pin number; determining whether one or more of said sensor signals have changed from the normal state to the fault condition or from the fault condition to the normal state; and displaying each of the pin numbers being associated with a sensor signal having changed from the normal state to the fault condition or from the fault condition to the normal state. - View Dependent Claims (35, 36, 37, 38)
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39. A method for indicating a changed condition, comprising the steps of:
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indicating the level of a plurality of parameters and the presence of one or more fault or warning conditions in a normal display mode; producing a plurality of sensor signals, each of the sensor signals being in one of a normal state or a fault condition and having an associated pin number; producing an audible signal in response to one of the sensor signals changing from the fault condition to the normal state or from the normal state to the fault condition in a diagnostic mode; and displaying the pin number associated with each sensor signal changing from the fault condition to the normal state or from the normal state to the fault condition in the diagnostic mode. - View Dependent Claims (40, 41, 42, 43, 44)
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Specification