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91. 发明专利

DE3685894T2 未知
公开(公告)号：DE3685894T2
公开(公告)日：1992-12-24
申请号：DE3685894
申请日：1986-03-26
申请人： HITACHI LTD
发明人： ARITA SETSUO , KITAURA WATARU , ICHINOSE YUJI , FUKUNISHI KOHYU
IPC分类号： G08C15/12 , H04L12/423 , H04Q9/14 , H04J3/16 , H04L12/42
摘要： A multi-element information transmission system comprises a plurality of slave stations (S1-Sn) operatively inputted with a plurality of apparatus information signals concerning apparatus to be controlled (or sensors), and a master station (2) for allotting the apparatus information signals to time slots in a transmission path and receiving a specified apparatus information signal with priority from the respective slave stations. The master station (2) includes a priority change information signal adder (5, 6, 7) and a multi-element information signal separator/processor (5, 6, 7). The priority change information signal adder (5, 6, 7) adds a priority change information signal for changing priority of the information signals transmitted from each slave station (S1-Sn) to the master station (2) to an information transmission signal string to be transmitted to each slave station, the signal string containing a sync signal allotted to a time slot for synchronization of information transmission between the master station and the respective slave station and various information signals to be transmitted from each slave station to the master station which are allotted to other time slots. The multi-element information signal separator/processor (5, 6, 7) separates and processes the multi-element information signals transmitted from each slave station (S1-Sn), on the basis of the priority change information signal. The respective slave stations (S1-Sn) include a detector/counter (35, 36) and a transmission pattern reconstructor (38, 43; 13, 14, 15). The detector/counter (35, 36) detects the sync signal contained in the information transmission signal string transmitted from the master station and counts the number of time slots following the time slot allotted with the sync signal. The transmission pattern reconstructor reconstructs transmission patterns of the respective slave stations in accordance with the priority change information signal when a count value from the detector/counter coincides with a predetermined value.

92. 发明专利

DE3273036D1 SIGNAL DIAGNOSTIC METHOD AND APPARATUS FOR MULTIPLE TRANSMISSION SYSTEM 未知
公开(公告)号：DE3273036D1
公开(公告)日：1986-10-09
申请号：DE3273036
申请日：1982-09-22
申请人： HITACHI LTD
发明人： ARITA SETSUO , ITO TETSUO
IPC分类号： H04L1/22 , H04B1/74 , H04L1/00 , H04L1/02 , H04L7/033 , H04L7/04
摘要： The present invention relates to a signal diagnostic method for a triple information tranmission system. According to this method, using a transmission signal transmitted latest among three transmission signals of three channels, the sychronizing signal parts of the respective transmission signals are synchronized so as to align the heads of information signal parts of the transmission signals, whereupon any error in the information signal parts of the transmission signals is detected. The three transmission signals of the three channels are temporarily stored in three registers (28A, 28B, 28C). The storage time intervals of the transmission signals in the registers are determined by the transmission time differences between the respective transmission signals and the latest transmission signal. Upon lapse of the predetermined storage time intervals, the transmission signals are fetched from the respective registers (28A, 28B, 28C).

93. 发明专利

DE3174697D1 MULTIPLE DIGITAL CONTROLLER SYSTEM 未知
公开(公告)号：DE3174697D1
公开(公告)日：1986-07-03
申请号：DE3174697
申请日：1981-06-04
申请人： HITACHI LTD
发明人： ITO TETSUO , ARITA SETSUO
IPC分类号： G05B7/02 , G05B9/03 , G06F11/20 , G06F15/46 , G05B15/02
摘要： In a multiple digital controller system which comprises a main or first digital controller (101) and at least one stand-by or second digital controller (201) and in which the main digital controller (101) normally applies the control signal to an object to be controlled (50), and the stand-by digital controller (201) applies the control signal to the controlled object (50) when the main digital controller (101) is disabled, an improvement is made so that an undesirable level variation may not substantially occur in the control signal applied to the controlled object (50) during the transient state of switch-over from the main digital controller (101) to the stand-by digital controller (201). In the improved multiple digital controller system according to the present invention, the integral calculation to be carried out in the stand-by digital controller (201) in a period n (n = 2, 3, ....) is executed on the basis of the data representing the result of integral calculation carried out in the preceding period (n-1) in the main digital controller (101) and transmitted from the main digital controller (101), in order to eliminate the influence of the differnece in conversion error occurring in the AID conventers of the digital controllers.

94. 发明专利

GB2530817A Operation support system for plant accidents 未知
公开(公告)号：GB2530817A
公开(公告)日：2016-04-06
申请号：GB201422475
申请日：2014-12-17
申请人： HITACHI LTD
发明人： ARITA SETSUO , ISHII YOSHIHIKO , KANADA MASAKI , KAMOSHIDA RYOTA , KATONO KENICHI , ISHIKAWA TADAAKI
IPC分类号： G05B23/02 , F01K13/02 , G21D3/04
摘要： An object of the invention is to provide an operation support system for plant accidents that estimates events reflecting plant states changing momentarily at plant accidents. The invention includes an event narrow-down device 205 that narrows down occurring event candidates based on at least one of a sensor signal 201, a device state signal 204, and an alarm signal and a discriminant rule. An event analysis device 208 analyzes a plant behaviour based on a plurality of event narrow-down results as output of the event narrow-down device, the sensor signal, the device state signal, and the alarm signal. An event estimation device estimates an occurring event by comparing an analysis result from the analysis of a process state as output of the event analysis device and the sensor signal. The event estimation device may output the analysis result of the process state and the sensor signal corresponding to the occurring event as an event estimation result.

95. 发明专利

SE0000064D0 未知
公开(公告)号：SE0000064D0
公开(公告)日：2000-01-12
申请号：SE0000064
申请日：2000-01-12
申请人： HITACHI LTD
发明人： OKADA SATOSHI , ARITA SETSUO , ATSUMI JUICHIRO , YAMADA IZUMI
IPC分类号： G08G20060101 , G08G5/06 , G08G

96. 发明专利

DE3855192D1 未知
公开(公告)号：DE3855192D1
公开(公告)日：1996-05-15
申请号：DE3855192
申请日：1988-09-08
申请人： HITACHI LTD
发明人： ARITA SETSUO , ITO TETSUO , SUZUKI SATOSHI , NOGUCHI ATOMI
IPC分类号： G05B9/03 , G05B23/02 , G06F11/18 , G06F11/22 , G06F11/267 , G06F11/27 , G06F11/32 , G21D3/04
摘要： A multiplex control system comprises a plurality of control apparatuses (1), test signal generators (J1) provided, respectively, for the control apparatuses (1) for the purpose of internal diagnosis thereof, signal selectors (10) each for selecting a signal to operate a device (13) under control from the signals produced by the control apparatuses, and diagnosis units (2) each for deciding presence or absence of abnormality in the associated signal selector with the aid of the signals inputted to the signal selector and the output signal therefrom.

97. 发明专利

DE3685894D1 未知
公开(公告)号：DE3685894D1
公开(公告)日：1992-08-13
申请号：DE3685894
申请日：1986-03-26
申请人： HITACHI LTD
发明人： ARITA SETSUO , KITAURA WATARU , ICHINOSE YUJI , FUKUNISHI KOHYU
IPC分类号： G08C15/12 , H04L12/423 , H04Q9/14 , H04J3/16 , H04L12/42
摘要： A multi-element information transmission system comprises a plurality of slave stations (S1-Sn) operatively inputted with a plurality of apparatus information signals concerning apparatus to be controlled (or sensors), and a master station (2) for allotting the apparatus information signals to time slots in a transmission path and receiving a specified apparatus information signal with priority from the respective slave stations. The master station (2) includes a priority change information signal adder (5, 6, 7) and a multi-element information signal separator/processor (5, 6, 7). The priority change information signal adder (5, 6, 7) adds a priority change information signal for changing priority of the information signals transmitted from each slave station (S1-Sn) to the master station (2) to an information transmission signal string to be transmitted to each slave station, the signal string containing a sync signal allotted to a time slot for synchronization of information transmission between the master station and the respective slave station and various information signals to be transmitted from each slave station to the master station which are allotted to other time slots. The multi-element information signal separator/processor (5, 6, 7) separates and processes the multi-element information signals transmitted from each slave station (S1-Sn), on the basis of the priority change information signal. The respective slave stations (S1-Sn) include a detector/counter (35, 36) and a transmission pattern reconstructor (38, 43; 13, 14, 15). The detector/counter (35, 36) detects the sync signal contained in the information transmission signal string transmitted from the master station and counts the number of time slots following the time slot allotted with the sync signal. The transmission pattern reconstructor reconstructs transmission patterns of the respective slave stations in accordance with the priority change information signal when a count value from the detector/counter coincides with a predetermined value.

98. 发明专利

DE3482221D1 未知
公开(公告)号：DE3482221D1
公开(公告)日：1990-06-13
申请号：DE3482221
申请日：1984-10-05
申请人： HITACHI LTD
发明人： ITO TETSUO , ARITA SETSUO
IPC分类号： H04L5/16 , G08C15/12 , H04J3/00 , H04J3/02 , H04L5/22

99. 发明专利

DE2935905A1 未知
公开(公告)号：DE2935905A1
公开(公告)日：1980-03-27
申请号：DE2935905
申请日：1979-09-05
申请人： HITACHI LTD
发明人： ARITA SETSUO , SATO TAKAO
IPC分类号： H04L1/16 , H04L7/04 , H04Q9/14

100. 发明专利

DE602008001573D1 Kommunikationssystem für Eisenbahnzüge 未知
公开(公告)号：DE602008001573D1
公开(公告)日：2010-08-05
申请号：DE602008001573
申请日：2008-01-15
申请人： HITACHI LTD
发明人： SAITO NAO , ARITA SETSUO , AYABE KAZUNORI , SAGAWA YUKIO , ITO SATORU
IPC分类号： B61D49/00 , B61D37/00 , B61L15/00 , B61L25/02 , H04H20/62 , H04N7/173 , H04N21/222 , H04N21/231 , H04N21/262 , H04W4/04

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