# US 2020/0398447 A1 · Malfunction detection device and malfunction detection method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0398447 A1 - Document ID: US20200398447A1 - Status: Published application - Kind: A1 - Application number: 16/975,960 - Filed: 2018-02-28 - Published: 2020-12-24 - Earliest claimed: 2018-02-28 - Assignees: Nissan Motor Co., Ltd. - Applicants: Nissan Motor Co., Ltd. - Inventors: Satoru Hirose; Toru Takagi - Web page: https://patentgrep.com/patent/US20200398447A1 ## CPC - B25J 19/06: Safety devices - G01M 99/005: {Testing of complete machines, e.g. washing-machines or mobile phones (testing of machine parts G01M13/00; testing of electric apparatus or components G01R31/50)} - B25J 9/1674: {characterised by safety, monitoring, diagnostic} - B25J 19/02: Sensing devices - G01P 15/097: by vibratory elements - H02P 29/024: Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load - G01P 15/00: Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration - G05B 2219/37209: Estimate life of gear, drive - G05B 2219/37435: Vibration of machine - G05B 2219/42256: Sampling the signal - B25J: MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES ({manipulators specially adapted for use in surgery A61B34/70; manipulators used in cleaning hollow articles B08B9/04}; manipulators associated with rolling mills B21B39/20; manipulators associated with forging machines B21J13/10; {manipulators associated with picking-up and placing mechanisms B23P19/007}; means for holding wheels or parts thereof B60B30/00; {vehicles with ground-engaging propulsion means, e.g. walking members B62D57/02, B62D57/032; devices for picking-up and depositing articles or materials between conveyors B65G47/90, B65G47/91; manipulators with gripping or holding means for transferring packages B65H67/065}; cranes B66C; {manipulators used in the protection or supervision of pipe-line installations F17D5/00; walking equipment adapted for nuclear steam-generators F22B37/006}; manipulators specially adapted for, or associated with, nuclear reactors G21C; {apparatus used for handling wafers during manufacture or treatment of semiconductor H10P72/50}) - G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR - G01P: MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT (measuring or recording blood flow A61B5/02, A61B8/06; monitoring speed or deceleration of electrically-propelled vehicles B60L3/00; vehicle lighting systems adapted to indicate speed B60Q1/54; determining position or course in navigation, measuring ground distance in geodesy or surveying G01C; combined measuring devices for measuring two or more variables of movement G01C23/00; measuring velocity of sound G01H; measuring velocity of light G01J7/00; measuring direction or velocity of solid objects by reception or emission of radiowaves or other waves and based on propagation effects, e.g. Doppler effect, propagation time, direction of propagation, G01S; measuring speed of nuclear radiation G01T; measuring acceleration of gravity G01V; {measuring or recording the speed of trains B61L23/00; speed indicators incorporated in motor vehicles B60K35/00; measuring frequency or phase G01R; traffic control G08G}) - H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS - G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G) ## Abstract A control unit causes a sensor to start sampling at a plurality of start timings different from each other. The control unit combines sampling signals obtained by the start of the sampling at the different start timings, and detects a malfunction of an apparatus in accordance with the combined sampling signal. ## Claims ### Claim 1 A malfunction detection device comprising a control unit including a signal input unit configure to obtain a sampling signal which is a state of an apparatus detected and sampled by a sensor, so that the control unit detects a malfunction of the apparatus in accordance with the sampling signal, the control unit being configured to: cause the sensor to start sampling at a plurality of start timings different from each other; combine sampling signals obtained by the start of the sampling at the different start timings; and detect the malfunction of the apparatus in accordance with the combined sampling signal. ### Claim 2 (depends on 1) The malfunction detection device according to claim 1, wherein the control unit combines a first sampling signal of the sampling signals obtained when the state of the apparatus detected by a first sensor is sampled and a second sampling signal of the sampling signals obtained when the state of the apparatus detected by a second sensor is sampled, and detects the malfunction of the apparatus in accordance with the combined sampling signal. ### Claim 3 (depends on 2) The malfunction detection device according to claim 2, wherein the first sensor and the second sensor are arranged at different positions in the same apparatus. ### Claim 4 (depends on 2) The malfunction detection device according to claim 2, wherein the first sensor and the second sensor are provided in different apparatuses. ### Claim 5 (depends on 2) The malfunction detection device according to claim 2, wherein a difference between a sampling timing of the first sampling signal and a sampling timing of the second sampling signal is shorter than a sampling cycle of the first sampling signal and shorter than a sampling cycle of the second sampling signal. ### Claim 6 (depends on 1) The malfunction detection device according to claim 1, wherein sampling cycles of the sampling started at the different start timings are common to each other. ### Claim 7 (depends on 6) The malfunction detection device according to claim 6, wherein a time difference between two of the start timings fulfills a condition of T=n×t+a, where t is each sampling cycle, n is zero or a positive integer, and 0