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| 20090319756 | Duplexed operation processor control system, and duplexed operation processor control method - The present invention provides a duplexed operation processor control system that includes operation processors, an I/O device, and at least one communication path that couples the operation processors to the I/O device, and at least one communication path that couples the operation processors with each other. The duplexed operation processor control system switches over either of the operation processors to be a primary operation processor that executes a control operation for a control target, and the other to be a secondary operation processor that is in a stand-by state, and the secondary operation processor snoops control data synchronously when the primary operation processor acquires the control data from the control target. | 12-24-2009 |
| 20100050062 | SENDING DEVICE, RECEIVING DEVICE, COMMUNICATION CONTROL DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION CONTROL METHOD - The system has, provided in a sending device, a generator generating transmission data including data, a data error detection code generated from the data and a safety flag indicating a degree of reliability, and transmission data; has, provided in a receiving device, a plurality of components of extracting transmission data, a safety flag, and a data error detection code from a received frame, and detecting a data error, a comparator comparing the matching of a plurality of received frames, and a selector selecting one received frame, from the frame error detection result, the safety flag, the data error detection result, and the matching comparison result; and determines the validity of transmitted data by the detection corresponding to the degree of reliability set with the safety flag. | 02-25-2010 |
| 20100235699 | FAULT DIAGNOSIS APPARATUS AND FAULT DIAGNOSIS METHOD OF MULTI-CHANNEL ANALOG INPUT/OUTPUT CIRCUIT - A fault diagnosis apparatus and method capable of simultaneously detecting the fault of a multiplexer and the fault of an A/D converter and isolating and identifying causes of these faults, the multiplexer and the A/D converter being used in a multi-channel analog input/output circuit. Test-voltage values are inputted from a diagnosis-voltage input unit into the multiplexer and the A/D converter constituting an analog-signal conversion unit, the multiplexer having plural channels, the A/D converter converting outputs from the multiplexer into digital signals, the test-voltage values being different from each other for each channel of the multiplexer. Comparisons are made between the digital voltage values and the test-voltage values inputted, the digital voltage values being outputted for each channel of the multiplexer. From this comparison result, it is judged whether the multiplexer is at fault or the A/D converter is at fault. | 09-16-2010 |
| 20110022936 | SENDING DEVICE, RECEIVING DEVICE, COMMUNICATION CONTROL DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION CONTROL METHOD - A receiving device including: a receiver receiving two frames, each including substantially same data attached thereto with a data error detection code, a frame error detection code, and safety flag information indicating a safety function or not, respectively; a first detector connected to the receiver for performing error detection of the frames by use of the frame error detection code, respectively; a second detector connected to the receiver for performing error detection of the data by use of the data error detection code, respectively; and a Direct Memory Access Controller (DMAC) connected to the first and second detectors for outputting one among the data included in the two frames under a condition of the safety function in the two frames when no error is detected in the frame and data error detections. | 01-27-2011 |
| 20110131348 | CONTROL SYSTEM AND CPU UNIT - In the disclosed control system, loops of 1st path and 2nd path are formed connecting an active CPU unit and each of RIO units, the direction of data frame transfer through the loop of 1st path being opposite to that of the data frame transfer through the loop 2nd path. Reflective electro-optical transducer modules are used in the RIO units which are connected with the active CPU unit so that a standby CPU unit can also be connected. Further, the loop of 1st path and the loop of 2nd path are formed connecting the standby CPU module and each of the RIO modules. The data frame transfer directions through the loops connecting the active CPU unit and each of the RIO units are opposite to the data frame transfer directions through the corresponding loops connecting the standby CPU unit and each of the RIO units. | 06-02-2011 |
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| 20090159569 | SWITCHGEAR - A switchgear case is partitioned into a high voltage bus bar chamber, which contains bus bars and cable heads, a high voltage device chamber containing circuit breakers and operation mechanisms and a low voltage control chamber containing a relay and measurement devices, etc., A rear wall of the case has a first suction port disposed at a lower part thereof, wherein the high voltage bus bar chamber, high voltage device chamber and the low voltage control chamber are communicated and air passing through the chambers is discharged from a first discharging port of the casing. The bus bars electrically connecting the high voltage devices in the high voltage device chamber and connecting bars connecting the adjoining bus bars and the cable heads are covered with solid insulators for solid-insulation. | 06-25-2009 |
| 20100002363 | SOLID INSULATED BUS SWITCHGEAR - A solid insulated bus switchgear, comprising: a cabinet having unit rooms defined by a ground metal plate on a front side thereof and a bus room defined by a ground metal plate on a rear side thereof; a first switching unit and a second switching unit, each of which has a circuit breaker, a current transformer, a zero-phase sequence current transformer, and an instrument voltage transformer, the first switching unit and the second switching unit being vertically stacked in the cabinet; main buses, which are solid-insulated, placed in the bus room in the cabinet in the width direction of the cabinet; a communication bus, which is solid-insulated, linked to the main buses, and connected to one end of the first switching unit at one end and to one end of the second switching unit at another end; and a first leader bus and a second leader bus, which are solid-insulated, the first leader bus being connected to another end of the first switching unit, the second leader bus being connected to another end of the second switching unit; wherein each of the first switching unit and the second switching unit has a movable cart, the circuit breaker mounted on the cart, and a frame assembly, to which the current transformer, the zero-phase sequence current transformer, and the instrument voltage transformer are attached, and standing on the cart to cover the outer circumferences of three planes (front and both sides) of the circuit breaker; and two terminals are vertically disposed upside or downside on the back of the circuit breaker, one being connected to a fixed electrode of the circuit breaker and the other being connected to a movable electrode of the circuit breaker, the two terminals being connected to the communication bus and to the first leader bus or second leader bus through air bushings provided on the cabinet so as to move away from and toward the communication bus and the first leader bus or the second leader bus. | 01-07-2010 |
| 20100208416 | EARTHING EQUIPMENT FOR SWITCHGEAR - Arthing equipment for a switchgear is comprised of a movable carrying cart, a switch portion, a manipulating portion, and a voltage detecting device. The earthing equipment is provided with: an upper conductor connected to any one of the movable electrode and the stationary electrode; a lower conductor connected to the other of the movable electrode and the stationary electrode, an earthing wire connecting the lower conductor to a terminal used for earthing of the switchgear; and an adaptor conductor being selectively connected to either a disconnection portion at a bus bar side or a disconnection portion at a cable side of the switchgear and is permitted to be selectively replaced on either upper or lower face of the upper conductor. | 08-19-2010 |
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| 20100008676 | Communication Light Detecting Device - A communication light detecting device interconnecting light transmission paths and collocated therebetween, comprises: an optical coupling body including a core portion for photo coupling with the light transmission paths, and a light extracting portion for extracting a part of the communication light as a leakage light; and a light detecting portion having a light receiving member for receiving the leakage light. The light extracting portion is preferable to possess a lower refractive index than that of the core portion. Besides, the light extracting portion is preferable to include a light detecting use groove with a groove width of 50 μm or more and 140 μm or less formed by cutting and separating the core portion. Besides, the light extracting portion is preferable to be the optical coupling body in which outer diameter of the core portion is different from the outer diameter of a core of the light transmission path. | 01-14-2010 |
| 20100329604 | OPTICAL CONNECTOR - An optical connector that requires no complicated fabrication operation such as highly accurate optical axis alignment and that permits an efficient pick up of part of the communication signal light being on-propagation along an optical transmission line, is provided. The optical connector | 12-30-2010 |
| 20110110637 | OPTICAL FIBER, END PART PROCESSING METHOD OF OPTICALFIBER, AND END PART PROCESSING APPARATUS OF OPTICAL FIBER - An optical fiber that has no bubbles in the ultraviolet ray curable resin filled inside the air holes to seal the end parts thereof, an end part processing method of the optical fiber, and an end part processing apparatus of the optical fiber, are provided. In an end part processing method of an optical fiber that is comprised of a core and a cladding formed around the core, the cladding having a refraction index lower than that of the core and has a plurality of air holes formed therein along the axis of the core, wherein the end part process of the optical fiber is to form sealed portions on the ends of the air holes by sealing them with ultraviolet ray curable resin, the method is characterized in that the sealed portion is formed by heating the end of the optical fiber. | 05-12-2011 |
