Abstract: Provided is a force sensor capable of expanding the application range of an electrically conductive member having an isotropic gauge factor. The electrically conductive member is placed in a designated latitude region on a main face of the strain body to annularly extend around a pole and to be divided at a position. The designated latitude region is a latitude region in which the magnitude of the sum of a first strain amount in the longitude line direction of the strain body relative to the pole and a second strain amount in the latitude line direction is not less than a reference value when a force having a component in the perpendicular direction to the main face is applied to the strain body.

Abstract: A laminated film includes an insulating substrate resin film and a resistance layer in order in a thickness direction. The resistance layer includes chromium nitride. A temperature coefficient of resistance of the resistance layer is ?400 ppm/° C. or more and ?200 ppm/° C. or less.

Abstract: A force sensor includes a first structure, four strain generation parts, and a second structure. The first structure is formed in such a way that a third axis penetrates therethrough. The four strain generation parts are provided along first and second axes on a reference plane formed by the first and second axes. The second structure is connected to the first structure with the strain generation parts interposed therebetween. The strain generation parts each includes a first beam part extending along the first axis or the second axis, and a second beam part extending in a direction orthogonal to the first beam part and connected to the first beam part at an intermediate part. The strain generation parts are formed in such a way that they are line-symmetric with respect to both the first axis and the second axis when projected in a direction of the third axis.

Abstract: A force sensor includes a first structure, four strain generation parts, and a second structure connected to the first structure with the strain generation parts interposed therebetween. The strain generation part includes a first connection part connected to the first structure, a first branch part, which is a beam-like part branching into two from the first connection part toward the second structure and extending in directions separating from each other, a second branch part, which is a beam-like part connected to the first branch part with bent parts interposed therebetween and extending in directions approaching each other, and a second connection part where branched parts of the second branch part join and connects to the second structure. The strain generation parts are formed so that the strain generation parts become line-symmetric with respect to the first and second axes when projected in a direction perpendicular to the reference plane.

Abstract: Provided is a force sensor capable of expanding the application range of an electrically conductive member having an isotropic gauge factor. The electrically conductive member is placed in a designated latitude region on a main face of the strain body to annularly extend around a pole and to be divided at a position. The designated latitude region is a latitude region in which the magnitude of the sum of a first strain amount in the longitude line direction of the strain body relative to the pole and a second strain amount in the latitude line direction is not less than a reference value when a force having a component in the perpendicular direction to the main face is applied to the strain body.

Abstract: A force sensor includes a first structure, four strain generation parts, and a second structure. The first structure is formed in such a way that a third axis penetrates therethrough. The four strain generation parts are provided along first and second axes on a reference plane formed by the first and second axes. The second structure is connected to the first structure with the strain generation parts interposed therebetween. The strain generation parts each includes a first beam part extending along the first axis or the second axis, and a second beam part extending in a direction orthogonal to the first beam part and connected to the first beam part at an intermediate part. The strain generation parts are formed in such a way that they are line-symmetric with respect to both the first axis and the second axis when projected in a direction of the third axis.

Abstract: A force sensor includes a first structure, four strain generation parts, and a second structure connected to the first structure with the strain generation parts interposed therebetween. The strain generation part includes a first connection part connected to the first structure, a first branch part, which is a beam-like part branching into two from the first connection part toward the second structure and extending in directions separating from each other, a second branch part, which is a beam-like part connected to the first branch part with bent parts interposed therebetween and extending in directions approaching each other, and a second connection part where branched parts of the second branch part join and connects to the second structure. The strain generation parts are formed so that the strain generation parts become line-symmetric with respect to the first and second axes when projected in a direction perpendicular to the reference plane.

Abstract: An obstacle detection sensor includes: a controller configured to determine a detection condition of an obstacle on a road; a distance sensor unit configured to acquire distance information by oscillating a vibration wave and receiving a reflected wave of the oscillated vibration wave; a communication unit configured to communicate with an outside to acquire road surface information; and a storage unit configured to store detection relationship information for identifying the obstacle based on the distance information, in which the controller compares the detection relationship information read from the storage unit with the distance information and the road surface information acquired from the distance sensor unit and the communication unit to determine the detection condition.

Abstract: A tire chain attachment determination device includes: an acquisition unit that acquires vibration information on a vibration of a vehicle detected by a vibration detection unit provided in the vehicle; and a determination unit that determines whether or not a tire chain is attached to the vehicle based on a frequency characteristic of the vibration of the vehicle using the vibration information.

Abstract: A road surface flooding determination device includes: a traveling data acquisition unit configured to acquire an actual acceleration that is applied in a front-rear direction of a vehicle and is detected by an acceleration sensor; and a determination unit configured to calculate a theoretical acceleration which is a theoretical acceleration applied in the front-rear direction of the vehicle traveling on a road surface that is not flooded, and to determine whether or not a traveling position of the vehicle is a flooding location based on a difference between the actual acceleration and the theoretical acceleration.

Abstract: A road surface water depth calculation device includes: an acquisition unit configured to acquire flooding locations at which a vehicle travels and water depth candidates of the flooding locations; an extraction unit configured to extract a plurality of continuous flooding locations from the acquired flooding locations; an altitude acquisition unit configured to acquire altitudes of the extracted flooding locations; an estimation unit configured to calculate a sum of the water depth candidate and the altitude, acquired by the altitude acquisition unit, of each of the extracted flooding locations, and estimate the sum as a water surface altitude which is an altitude of a water surface of each of the extracted flooding locations; and a calculation unit configured to calculate a water depth of the extracted flooding location based on the water surface altitude and the altitude, acquired by the altitude acquisition unit, of each of the extracted flooding locations.

Abstract: A road surface condition estimation device includes a control circuit, an acquisition circuit and an estimation circuit. The control circuit is configured to control a driving device that is able to independently drive a plurality of wheels. The acquisition circuit is configured to acquire detection results of a plurality of wheel speed sensors that detects rotation speeds of the plurality of wheels respectively. The estimation circuit is configured to calculate a slip ratio for each driving wheel, based on a detection result of a first wheel speed sensor and a detection result of a second wheel sensor. The estimation circuit is configured to estimate a friction coefficient for each region on a road surface that corresponds to the driving wheel, based on the slip ratio.

Abstract: A trip purpose estimation apparatus includes a trip information acquisition unit acquiring trip information per trip of a vehicle, the trip information including a departure point, an arrival point, a departure time, and an arrival time of the vehicle, a trip information storage unit storing a history of the trip information acquired by the trip information acquisition unit, a differential calculation unit calculating a time of stay of the vehicle at the arrival point of a target trip based on the history of the trip information stored in the trip information storage unit, the target trip corresponding to the trip in which a trip purpose of a passenger of the vehicle is estimated, and a trip purpose estimation unit estimating the trip purpose of the passenger of the vehicle to the arrival point of the target trip based on the calculated time of stay.

Abstract: An obstacle detection sensor includes: a controller configured to determine a detection condition of an obstacle on a road; a distance sensor unit configured to acquire distance information by oscillating a vibration wave and receiving a reflected wave of the oscillated vibration wave; a communication unit configured to communicate with an outside to acquire road surface information; and a storage unit configured to store detection relationship information for identifying the obstacle based on the distance information, in which the controller compares the detection relationship information read from the storage unit with the distance information and the road surface information acquired from the distance sensor unit and the communication unit to determine the detection condition.

Abstract: A tire chain attachment determination device includes: an acquisition unit that acquires vibration information on a vibration of a vehicle detected by a vibration detection unit provided in the vehicle; and a determination unit that determines whether or not a tire chain is attached to the vehicle based on a frequency characteristic of the vibration of the vehicle using the vibration information.

Abstract: A wireless communication apparatus has a first communication unit configured to perform at least one of transmission and reception by using a multicarrier signal constituted by a plurality of subcarriers shaped by a band-limited pulse waveform; and second communication unit configured to perform at least one of transmission and reception by using a signal having a different modulation format or modulation constant from said signal of said first communication unit. Said first communication unit configured to perform communication without using at least one of said plurality of subcarriers, and said second communication unit configured to perform communication using a band of said subcarrier not used by said first communication unit.

Abstract: A mobile body-mounted communication device mounted in a mobile body such as a vehicle and making difficult the long-time tracking of the moving path of the mobile body. The mobile body-mounted communication device mounted in a mobile body and used for transmitting/receiving packet information is characterized by comprising a borrowing address acquiring section for acquiring lending addresses as borrowed addresses from an address management device managing lending addresses, a borrowing time information acquiring section for acquiring information representing predetermined times during which the borrowing addresses can be used from the address management device, and a transmitting section for transmitting packet information including information on a borrowing address out of the borrowing addresses and the mobile body during the predetermined borrowing times determined for the borrowing addresses.

Abstract: The invention provides a metalworking oil composition which is used for a very small amount of oil-feeding type metalworking method, said composition comprising a base oil selected from the group consisting of natural fats and oils, derivatives thereof and synthetic ester oils; and an antirust agent comprising a sorbitan fatty acid ester and a phospholipid, and a metalworking method using the composition and metalwork obtained by the metalworking method. The oil composition shows excellent lubricity and antirust property and is suitably used for metalworking of metallic materials such as cast iron, steel, stainless steel, and nonferrous metal (such as Al alloy and Mg alloy) by a method in which a very small amount of oil is supplied.

Abstract: A mobile unit communication apparatus, including a wireless transceiver, is provided at a mobile unit. At the mobile unit communication apparatus, a surrounding object detection unit detects objects surrounding the mobile unit. The surrounding communication impediment detection unit detects a likelihood of an impediment to communication in the surroundings of the mobile unit from conditions for surrounding objects detected by the surrounding object detection unit. A relay communication unit transmits information received by the wireless transceiver from the wireless transceiver. A relay wait time setting unit sets a time until information received by the wireless transceiver is transmitted by the relay communication unit from the wireless transceiver longer for a larger likelihood of an impediment to communication detected by the surrounding communication impediment detection unit.

Abstract: A mobile body-mounted communication device mounted in a mobile body such as a vehicle and making difficult the long-time tracking of the moving path of the mobile body. The mobile body-mounted communication device mounted in a mobile body and used for transmitting/receiving packet information is characterized by comprising a borrowing address acquiring section for acquiring lending addresses as borrowed addresses from an address management device managing lending addresses, a borrowing time information acquiring section for acquiring information representing predetermined times during which the borrowing addresses can be used from the address management device, and a transmitting section for transmitting packet information including information on a borrowing address out of the borrowing addresses and the mobile body during the predetermined borrowing times determined for the borrowing addresses.