Temperature abnormality detection system and temperature abnormality detection method
AssigneeCentral Japan Railway Company
InventorsMasashi Itoyama, Takeshi Narita, Naotaka Kumagai
Life of this patent
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Abstract
A temperature abnormality detection system includes: measurement devices; and a processor to determine temperature abnormality using a first temperature T1, a second temperature T2, and a third temperature T3. The processor determines occurrence of temperature abnormality when any one of following conditions is satisfied: (A) T1>A0 or T2>A0 or T3 >A0; (B) T1>A1 and (T2−T1>A4 or T2−T1<0) and T2>A2 and T3>A3; (C) T1>A1 and T2−T1>A4 and T3>A3; (D) T1>A1 and T2−T1>A4 and (T3−T2>A5 or T3−T1>A6); and (E) T1>A1 and T2−T1<0 and (T3−T2>A7 or T3−T1>A8), where A1<A0, A2<A0, and A3<A0.
Claims6
A temperature abnormality detection system comprising:
- measurement devices each configured to measure, at a corresponding one of points on a ground through which a railroad vehicle runs sequentially, a temperature of an underfloor device of the railroad vehicle that passes the corresponding point;
- and
- a processor configured to perform determination of temperature abnormality based on a first temperature T1, a second temperature T2 at a point which the railroad vehicle passes after a measurement point of the first temperature T1, and a third temperature T3 at a point which the railroad vehicle passes after a measurement point of the second temperature T2, among the temperatures measured by the measurement devices,
- wherein the processor uses threshold values A0, A1, A2, A3, A4, A5, A6, A7, and A8, which are specified previously, and determines whether or not a temperature abnormality occurred when any one of following Conditions (A), (B), (C), (D), and (E) is satisfied:
- (A) (T1>A0) or (T2>A0) or (T3>A0);
- (B) (T1>A1) and ((T2−T1>A4) or (T2−T1<0)) and (T2>A2) and (T3>A3);
- (C) (T1>A1) and (T2−T1>A4) and (T3>A3);
- (D) (T1>A1) and (T2−T1>A4) and ((T3−T2>A5) or (T3−T1>A6));
- and
- (E) (T1>A1) and (T2−T1<0) and ((T3−T2>A7) or (T3−T1>A8)), where A1<A0, A2<A0, and A3<A0.
A temperature abnormality detection method using, among temperatures of an underfloor device of a railroad vehicle at points on a ground through which the railroad vehicle runs sequentially, a first temperature T1, a second temperature T2 at a point which the railroad vehicle passes after a measurement point of the first temperature T1, and a third temperature T3 at a point which the railroad vehicle passes after a measurement point of the second temperature T2, and using threshold values A0, A1, A2, A3, A4, A5, A6, A7, and A8, which are specified previously, to thereby determine whether or not a temperature abnormality occurred when any one of following Conditions (A), (B), (C), (D), and (E) is satisfied:
- (A) (T1>A0) or (T2>A0) or (T3>A0);
- (B) (T1>A1) and ((T2−T1>A4) or (T2−T1<0)) and (T2>A2) and (T3>A3);
- (C) (T1>A1) and (T2−T1>A4) and (T3>A3);
- (D) (T1>A1) and (T2−T1>A4) and ((T3−T2>A5) or (T3−T1>A6));
- and
- (E) (T1>A1) and (T2−T1<0) and ((T3−T2>A7) or (T3−T1>A8)),
- where A1<A0, A2<A0, and A3<A0.
Dependencies are inferred from the claim text.