US 11,920,508 B2
Anomaly determination device, anomaly determination method, and memory medium
Tomoyuki Kittaka, Anjo (JP); Tomoaki Suzuki, Nagoya (JP); Makoto Ohno, Anjo (JP); Takuya Tsujiyama, Toyota (JP); Tadanobu Sobue, Toyokawa (JP); and Raishiro Wada, Nagoya (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-Ken (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken (JP)
Filed on Mar. 16, 2023, as Appl. No. 18/184,668.
Claims priority of application No. 2022-046890 (JP), filed on Mar. 23, 2022.
Prior Publication US 2023/0304435 A1, Sep. 28, 2023
Int. Cl. F01P 11/14 (2006.01); F01P 5/10 (2006.01); G07C 5/08 (2006.01)
CPC F01P 11/14 (2013.01) [F01P 5/10 (2013.01); G07C 5/0808 (2013.01); G07C 5/0825 (2013.01); F01P 2031/18 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An anomaly determination device for a water pump, the water pump being subject to a determination made by the anomaly determination device and forcibly delivering coolant from an internal combustion engine, the anomaly determination device comprising:
execution circuitry; and
memory circuitry, wherein
the memory circuitry is configured to store map data that defines a map, the map being configured to output, when an input variable is input to the map, an output variable that indicates whether the coolant has leaked out of the water pump,
the execution circuitry is configured to execute:
an acquisition process that acquires the input variable from image data obtained by capturing an outer surface of the water pump;
a calculation process that outputs a value of the output variable by inputting, to the map, the input variable acquired through the acquisition process;
a provisional determination process that uses the output variable to provisionally determine whether the coolant has leaked out of the water pump; and
a determination finalizing process that uses a provisional determination result to obtain a final determination result indicating whether the coolant has leaked out of the water pump, the provisional determination result being a determination result of the provisional determination process,
the map is one of different maps that are defined by the map data,
one or more of the maps have been learned through machine learning in advance,
the provisional determination process is one of provisional determination processes,
the provisional determination result is one of provisional determination results, and
the execution circuitry is further configured to:
execute the calculation process for the maps and obtain the provisional determination results, the provisional determination results being respectively obtained by executing the provisional determination processes for the output variables output from the maps, and
treat, as the final determination result indicating whether the coolant has leaked, a majority of the provisional determination results in the determination finalizing process.