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21. 发明专利

JPS61173313A SYSTEM OF PRESUMING CAUSE OF TROUBLE OF PLANT 失效
公开(公告)号：JPS61173313A
公开(公告)日：1986-08-05
申请号：JP1239385
申请日：1985-01-28
申请人： HITACHI LTD
发明人： MIYAZAKI SATOSHI , FURUKAWA MASAZUMI , YAGI HIROYUKI , MURATA FUMIO , HASHIMOTO SHIGEO
IPC分类号： G05B23/02 , G21C17/00
摘要： PURPOSE:To presume the cause of troubles of machines simply by comparing an abnormality pattern of a sensor indicated actually with a presumed abnormality pattern by using the causal relation between time lapsed from the first detection of abnormality and the troubles. CONSTITUTION:An abnormality detecting device 107 compares a reference signal stored to judge the normalcy and abnormality of a signal with a detection signal, and outputs a signal of normalcy or abnormality of the detection signal 105 to causes of trouble presuming device 109. The device 109 checks the signal 108 at a fixed time interval, and when the signal changed from normalcy to abnormality, stores the time. Further, the device 109 finds out the time required from the first detection of abnormality in other sensors for each machine based on the signal 113, and stores in the inside. When an operation command signal 111 is inputted from an operator's console 110, the device 109 presumes the causes of troubles based on time of operation command responding to the operation command signal 111 and the time required from the signal 108 to the detection of abnormality and displays 115 a signal 114.

22. 发明专利

JP2007122296A Plant monitoring device 审中-公开
标题翻译：植物监测装置
公开(公告)号：JP2007122296A
公开(公告)日：2007-05-17
申请号：JP2005312103
申请日：2005-10-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIMABUKURO UMI , YAGI HIROYUKI
IPC分类号： G05B23/02
摘要： PROBLEM TO BE SOLVED: To provide a plant monitoring device for presenting the information of whether a plant status is a status that a plant is stably controllable under automatic control or a status that automatic control is switchable to manual control to a plant operator. SOLUTION: This plant monitoring device configured to control a plant for automatically switching automatic control to manual control is provided with a control status detecting part 37 for inputting a plant parameter from a plurality of detectors, and for detecting the control status of each of the plurality of plant parameters, and for specifying whether automatic control is stable or marginal or out of range; a status selecting part 43 for determining the control status according to a signal from the control status detecting part 37; and a display part 4 for displaying the control status determined by the status selecting part 43. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种工厂监控装置，用于呈现关于工厂状态是否是在自动控制下工厂稳定可控的状态的信息或者可以自动控制切换到对工厂操作者的手动控制的状态的信息。解决方案：该工厂监控装置被配置为控制用于自动切换自动控制到手动控制的设备，具有用于从多个检测器输入工厂参数的控制状态检测部37，并且用于检测每个并且用于指定自动控制是稳定的还是边缘的或超出范围的; 用于根据来自控制状态检测部37的信号确定控制状态的状态选择部43; 以及用于显示由状态选择部分43确定的控制状态的显示部分4.（C）2007，JPO＆INPIT

23. 发明专利

JP2000121409A DEVICE AND METHOD FOR DIAGNOSING OBSTACLE OF PURGE TYPE INSTRUMENT 失效
公开(公告)号：JP2000121409A
公开(公告)日：2000-04-28
申请号：JP29087998
申请日：1998-10-13
申请人： HITACHI LTD
发明人： YAGI HIROYUKI , ISHIDA TAKAYUKI , NOGUCHI NAOKI
IPC分类号： G01F23/14 , G01L13/00 , G01M99/00 , G01M19/00
摘要： PROBLEM TO BE SOLVED: To provide a device and method for diagnosing the obstacle of a purge type instrument for quickly and efficiently diagnosing the obstacle of a purge tube based on a signal from a purge type instrument at the time of the normal operation of a plant. SOLUTION: Whether or not the diagnose of the obstacle of a purge type instrument 600 can be attained is judged based on the diagnostic period of the purge type instrument 600 to be used for a plant 100 and a plant state signal 502 by a diagnose validity/invalidity judging part 505 of an obstacle diagnostic device 500. When it is judged that the diagnose of the obstacle of the purge type instrument 600 can be attained, a differential pressure signal 503 detected by a differential pressure gauge 105 of the purge type instrument 600 is fetched by an obstacle diagnostic part 507, and the diagnose of the obstacle of a purge tube 104 of the purge type instrument 600 is operated based on the fetched differential pressure signal 503.

24. 发明专利

JPH0631811B2 失效
公开(公告)号：JPH0631811B2
公开(公告)日：1994-04-27
申请号：JP3798987
申请日：1987-02-23
申请人： HITACHI LTD
发明人： YAGI HIROYUKI , SHIDA TOICHI
IPC分类号： G21D1/04 , G21C7/26 , G21C17/003 , G21D3/04

25. 发明专利

JPH04299704A METHOD AND DEVICE FOR PRODUCTION OF PLANT CONTROL RULE AND PLANT CONTROLLER 失效
公开(公告)号：JPH04299704A
公开(公告)日：1992-10-22
申请号：JP6455991
申请日：1991-03-28
申请人： HITACHI LTD
发明人： YAGI HIROYUKI , FUJIHIRA KAZUSHIGE
IPC分类号： G05B13/02 , G05B15/02 , G06F9/44
摘要： PURPOSE:To objectively and automatically produce a control rule with high efficiency even to such a plant state that seldom occurs with a real device by using a simulation device. CONSTITUTION:A simulation computer 20 is connected to a control rule production computer 40 with a signal 32 received from an instructor console 30. Thus a control rule production console 50 sets an input signal for production of a control rule. Then the console 30 sets a plant state to the control rule to be produced, and the computer 20 outputs an output signal 11 to an intermediate control panel 10. When an operation signal 12 is inputted by an expert operator to the signal 11, both signals 11 and 12 are inputted to the computer 40. These signals are stored in a date base only when an operator of a control rule producing device judges that a series of relative operations are proper.

26. 发明专利

JPS62108632A DATA TRANSMISSION SYSTEM 失效
公开(公告)号：JPS62108632A
公开(公告)日：1987-05-19
申请号：JP24794285
申请日：1985-11-07
申请人： HITACHI LTD
发明人： NAKAMURA TSUTOMU , FUJIKURA NOBUYUKI , MIYAMOTO SHOJI , HAGIWARA MASAYOSHI , SHINNAI KOSUKE , YAGI HIROYUKI , SASAKI RYOICHI
IPC分类号： H04L29/08 , H04L1/00 , H04L1/16 , H04L13/00
摘要： PURPOSE:To reduce the transmission/reception processing overhead by switching the mode into the 2nd retransmission mode in place of the 1st retransmission mode when the number of missing frames generate consecutively exceeds a specified value. CONSTITUTION:A data is sent to a terminal equipment 10 from a communication control processing equipment 7 while a serial number is added. When a data with a serial number 6 is received by the terminal equipment 10, since it is discriminated that the data with a data serial number 5 is not correctly received, the signal SREJ 5 of retransmission request is returned to the equipment 7 and the data with the serial number 6 is kept. Since the data of serial numbers 9, 15 are not correctly received, signals SREJ 9, SREJ 15 of retransmission request are returned. On the other hand, when a data with a serial number 24 is received by the terminal equipment 10, it is discriminated that data of serial numbers 20-23 are not correctly received. In this case, the number of missing frames is 4 and it exceeds the specified number, and a signal REJ 20 is returned immediately to the processing equipment 7 immediately, the data with the serial number 24 is thrown away and the correct reception of the data with the serial number 20 is awaited.

27. 发明专利

JPS61248627A SATELLITE COMMUNICATION SYSTEM 失效
公开(公告)号：JPS61248627A
公开(公告)日：1986-11-05
申请号：JP8853685
申请日：1985-04-26
申请人： HITACHI LTD
发明人： YAGI HIROYUKI , SASAKI RYOICHI , TAKARAGI KAZUO
IPC分类号： H04B7/15 , H04B13/00 , H04L1/00
摘要： PURPOSE:To obtain a satellite communication system with high reliability without increasing a communication time by utilizing the difference between physical properties of electromagnetic waves of different bands to control the communication. CONSTITUTION:The communication is controlled by utilizing the difference between physical properties of electromagnetic waves (including light, X-ray and gamma-ray of >=2 kinds of different bands. When error information is detected by an earth station 10, a laser transmitter 210 transmits a communication control signal 220 in matching with the state of the error information from a communication control antenna 230 of the earth station in the form of a laser ray 170 propagated at higher speed than a radio wave for information transmission. A communication control antenna 240 of a communication satellite 100 receives the laser ray 170 from the earth station and sends a transmission stop signal 265 to a transmission shut device 270 corresponding to a frequency identified by a control signal identification device 260. Further, the shutter 270 shuts a signal 155 amplified by a transmitter 150 to stop the transmission from the communication satellite 100 to the earth station 10 when a transmission stop signal 265 is inputted.

28. 发明专利

JPS61245210A ESTIMATING SYSTEM FOR TROUBLE FACTOR OF PLANT 失效
公开(公告)号：JPS61245210A
公开(公告)日：1986-10-31
申请号：JP8632985
申请日：1985-04-24
申请人： HITACHI LTD
发明人： MIYAZAKI SATOSHI , FURUKAWA MASAZUMI , YAGI HIROYUKI , MURATA FUMIO , HASHIMOTO SHIGEO
IPC分类号： G05B23/02
摘要： PURPOSE:To estimate accurately the factor of a plant trouble by using the time point when the abnormal information is detected as well as the normal information after giving a trouble factor to each device with the direct trouble influence reaction given between two devices respectively. CONSTITUTION:A plant 101 contains plural pieces of component devices 102 and a state detecting sensor 103 and delivers a state signal 104 to an abnormality detecting device 107 consisting of an abnormality detector 106. The device 107 stores previously a normal/abnormal decision reference signal to compare this signal with a detection signal 105 and delivers the result of this comparison to a trouble factor estimating device 109. The device 109 checks these comparison results for each fixed period of time and stores a time pint when an abnormal signal is produced. Thus a trouble factor is given to each device 102 together with the influence direction, the maximum/minimum influence time and the influence probability given between devices 102 respectively. Then the trouble factor is estimated from the time point when said abnormal signal is detected and the normal information and displayed on a display device 115.

29. 发明专利

JPS61193298A SENSOR SIGNAL DECISION SYSTEM 失效
公开(公告)号：JPS61193298A
公开(公告)日：1986-08-27
申请号：JP3263585
申请日：1985-02-22
申请人： HITACHI LTD
发明人： YAGI HIROYUKI , FURUKAWA MASAZUMI , MURATA FUMIO , SASAKI RYOICHI
IPC分类号： G01D21/00 , G01M3/00 , G08B23/00 , G08B31/00

30. 发明专利

JPS60167006A ESTIMATION AND DIAGNOSIS SYSTEM FOR FAULT INFLUENCE OF PLANT 失效
公开(公告)号：JPS60167006A
公开(公告)日：1985-08-30
申请号：JP2169584
申请日：1984-02-10
申请人： HITACHI LTD
发明人： MIYAZAKI SATOSHI , FURUKAWA MASAZUMI , YAGI HIROYUKI , MURATA FUMIO , HASHIMOTO SHIGEO
IPC分类号： G05B23/02 , G21C17/00
摘要： PURPOSE:To estimate the cause of a falt corresponding to a state change of the plant by sending an arithmetic start signal on the basis of information from a sensor, deciding on recovery from the fault, and initializing fault information data. CONSTITUTION:The plant 101 consists of plural sets of constituent equipment 102 and sensors 103 which detects their states, and flow rates, temperatures, and frequencies are detected. Then, each fault detector 107 detects abnormality and a plant state decision device 109 makes a check at constant intervals of time to output an arithmetic start signal when there is a normal-to-abnormal change found among state changes of the plant or fault recovery message signal 111 when there is an abnormal-to-normal state. When all the states are normal, a fault information table is initialized. Thus, said signal 110 is inputted and a fault influence estimating and diagnosing device 112 forecasts fault influence and its range and estimate the cause of the fault.

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