Diagnostic apparatus and method
View Patent ↗Provided is a diagnostic apparatus easily applied to diagnosis of a small lot product, etc. When measurement data on a measurement object is inputted sequentially, a filter section ( 408 ) performs filtering of the measurement data. When new measurement data is employed as diagnosis object data, a statistic processing section ( 420 ) updates diagnosis reference data using the new diagnosis object data. A diagnostic section ( 416 ) diagnoses the diagnosis object data based on the diagnosis reference data and determines whether an abnormality is present or not. If an abnormality is present, the fact is displayed to a user along with diagnosis results through an UI section ( 428 ).
1. A diagnostic apparatus, comprising:
validity determining means for determining whether a measurement value obtained by time-sequentially measuring a measurement object is valid;
reference generating means for generating a center value of measurement values determined to be valid as a diagnosis reference used for diagnosing the measurement object each time the measurement value is determined to be valid; and
diagnosing means for diagnosing the measurement object to be normal when the measurement value is within a predetermined range from the center value of the measurement values which is set according to a passage of measuring time.
2. The diagnostic apparatus according to claim 1 , further comprising state determining means for determining a state of the measurement object by using the measurement value determined to be valid, the measurement object changing among a plurality of states,
wherein the reference generating means generates the diagnosis reference according to the state of the measurement object.
3. The diagnostic apparatus according to claim 1 , further comprising state determining means for determining a state of the measurement object by using the measurement value determined to be valid, the measurement object changing among a plurality of states,
wherein the diagnosing means diagnoses the measurement object according to the state of the measurement object.
4. The diagnostic apparatus according to claim 1 ,
wherein the validity determining means determines a measurement value obtained at liming other than predetermined timing, a measurement value inevitably containing an error when the measurement object is measured, and a measurement value taking a value outside a preset range, or a measurement value other than a combination of anyone or more of the measurement values to be valid.
5. The diagnostic apparatus according to claim 1 ,
wherein the diagnosing means determines the measurement object to be normal when the measurement value takes a value outside the predetermined range from the center value of the measurement values by a predetermined number of times or more, or by a predetermined frequency or more.
6. A transport machine, comprising:
transporting means for transporting a component to be a measurement object;
validity determining means for determining whether a measurement value obtained by time-sequentially measuring a measurement object is valid;
reference generating means for generating a center value of measurement values determined to be valid as a diagnosis reference used for diagnosis of the measurement object each time the measurement value is determined to be valid; and
diagnosing means for diagnosing the measurement object to be normal when the measurement value is within a predetermined range from the center value of the measurement values obtained by a statistic processing which is set according to a passage of measuring time.
7. A diagnostic method, comprising:
determining whether a measurement value obtained by time-sequentially measuring a measurement object is valid;
generating a center value of measurement values determined to be valid as a diagnosis reference used for diagnosis of the measurement object each time the measurement value is determined to be valid; and
diagnosing the measurement object to be normal when the measurement value is within a predetermined range from the center value of the measurement values obtained by a statistic processing which is set according to a passage of measuring time.
8. A computer readable medium having stored thereon a program for causing a computer to execute:
a validity determining step of determining whether a measurement value obtained by time-sequentially measuring a measurement object is valid;
a reference generating step of generating a center value of measurement values determined to be valid as a diagnosis reference used for diagnosing the measurement object each time the measurement value is determined to be valid; and
a diagnosing step of diagnosing the measurement object to be normal when the measurement value is within a predetermined range from the center value of the measurement values obtained by a statistic processing which is set according to a passage of measuring time.