Abnormality determination apparatus, abnormality determination system, abnormality determination method and non-transitory computer-readable recording medium storing abnormality determination program

An abnormality determination system, comprising:

• at least two roadside devices, comprising:
• an object-matter detection device including an object-matter detector for performing object-matter detection on a basis of a reception signal outputted from an object-matter detecting sensor, and an absolute location calculation device for transforming a relative location of an object-matter contained in an object-matter detection result outputted from the object-matter detector into an absolute location;
• and
• a roadside sensor being the object-matter detecting sensor, and further comprising:
• a mobile object, comprising:
• an object-matter detection device;
• the object-matter detecting sensor being an onboard surroundings monitoring sensor;
• and
• an onboard global positioning system for acquiring and transmitting current location information of the mobile object on its own, and yet further comprising:
• a server, comprising:
• an abnormality determination apparatus including an abnormal position determination device for performing determination whether or not abnormality is caused in each of the roadside sensor, the onboard surroundings monitoring sensor and the onboard global positioning system on a basis of an object-matter detection result outputted from an object-matter detection device provided with at least one roadside device and the mobile object and on that of placement location information of the roadside devices, wherein
• the server performs notification on a basis of an abnormality determination result outputted from the abnormality determination apparatus.

A method of determining abnormality, comprising:

• an object-matter detection process-step of performing object-matter detection on a basis of a reception signal outputted from an object-matter detecting sensor;
• an absolute location calculation process-step of transforming a relative location of an object-matter contained in an object-matter detection result obtained at the object-matter detection process-step into an absolute location;
• and
• an abnormality determination process-step of performing determination whether or not abnormality is caused in the object-matter detecting sensor by comparing absolute location information obtained at the absolute location calculation process-step with reference information.

A non-transitory computer-readable recording medium storing an abnormality determination program including an instruction to execute by an abnormality determination apparatus for determining abnormality of an object-matter detecting sensor, the abnormality determination program, comprising:

• an object-matter detection process-step of performing object-matter detection on a basis of a reception signal outputted from an object-matter detecting sensor;
• an absolute location calculation process-step of transforming a relative location of an object-matter contained in an object-matter detection result obtained at the object-matter detection process-step into an absolute location;
• and
• an abnormality determination process-step of performing determination whether or not abnormality is caused in the object-matter detecting sensor by comparing absolute location information obtained at the absolute location calculation process-step with reference information.