# US 2016/0356002 A1 · Method of detecting road surface degradation, information process apparatus, and non-transitory computer-readable recording medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0356002 A1 - Document ID: US20160356002A1 - Status: Published application - Kind: A1 - Application number: 15/237,858 - Filed: 2016-08-16 - Published: 2016-12-08 - Earliest claimed: 2014-03-18 - Assignees: Fujitsu Limited - Applicants: Fujitsu Limited - Inventors: Hiroyuki TANI - Web page: https://patentgrep.com/patent/US20160356002A1 ## CPC - E01C 23/01: Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed {or reference line} supports (form rails E01C19/50); Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs (E01C23/07 takes precedence; measuring roughness or irregularity in general G01B) - E01C 23/07: Apparatus combining measurement of the surface configuration of paving with application of material in proportion to the measured irregularities (measuring means only E01C23/01 {G01B}) - E01C: CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR (forming roads or like surfaces by compacting or grading snow or ice E01H) ## Abstract In estimating the degraded position of a road surface with high accuracy, a server apparatus 210 comprising a part configured to change, when detecting a road surface degradation with respect to a certain road position based on accumulation of measurement information evaluation values at a plurality of times of a travel of a vehicle on the certain road position, detection sensitivity for the road surface degradation according to an MCI value with respect to the certain road surface position, the measurement information evaluation values being measured with an acceleration sensor installed in the vehicle and being according to road surface positions on which the vehicle has traveled. ## Claims ### Claim 1 A non-transitory computer-readable recording medium having stored there in a program for causing a computer to execute a process, the process comprising: changing, when detecting a road surface degradation with respect to a certain road position based on accumulation of measurement values at a plurality of times of a travel of a vehicle on the certain road position, detection sensitivity for the road surface degradation according to a road surface evaluation value associated with the certain road surface position, the measurement values being measured with an acceleration sensor installed in the vehicle and being according to road surface positions on which the vehicle has traveled. ### Claim 2 (depends on 1) The non-transitory computer-readable recording medium of claim 1, wherein the changing includes changing the detection sensitivity for the road surface degradation such that the detection sensitivity for the road surface degradation becomes higher as the road surface evaluation value indicates more increased degradation state of the road surface. ### Claim 3 (depends on 1) The non-transitory computer-readable recording medium of claim 1, wherein the road surface evaluation value is an MCI value. ### Claim 4 (depends on 1) The non-transitory computer-readable recording medium of claim 1, wherein the process further includes instructing, when the vehicle travels the certain road surface position at which the road surface degradation has been detected, an alarm to be output in the vehicle. ### Claim 5 (depends on 1) The non-transitory computer-readable recording medium of claim 1, wherein the process further includes storing date and time information at which the measurement values with respect to the certain road surface position have been measured; and determining, when receiving a repair date and time of the certain road surface position that has been repaired, the measurement values measured on date and time after the repair date and time as a target to be accumulated. ### Claim 6 An information process apparatus, comprising a processor configured to change, when detecting a road surface degradation with respect to a certain road position based on accumulation of measurement values at a plurality of times of a travel of a vehicle on the certain road position, detection sensitivity for the road surface degradation according to a road surface evaluation value associated with the certain road surface position, the measurement values being measured with an acceleration sensor installed in the vehicle and being according to road surface positions on which the vehicle has traveled. ### Claim 7 A method of detecting a road surface degradation, the method comprising: using a processor to change, when detecting a road surface degradation with respect to a certain road position based on accumulation of measurement values at a plurality of times of a travel of a vehicle on the certain road position, detection sensitivity for the road surface degradation according to a road surface evaluation value associated with the certain road surface position, the measurement values being measured with an acceleration sensor installed in the vehicle and being according to road surface positions on which the vehicle has traveled.