39results about How to "Reduce the risk of misuse" patented technology

The invention relates to a setting calculation method for a direct current system protection setting value. The setting calculation method for the direct current system protection setting value comprises the steps that firstly, partition and classification are performed on direct current system protection to form a corresponding protection principle template base; secondly, a mathematical model of a convertor station is built through engineering configuration, an equipment element parameter and a short dot are set, and a short-circuit current is determined through an electromagnetic transient simulation experiment; finally, the short-circuit current obtained through calculation serves as a process parameter, and protection setting calculation is performed on the process parameter and the equipment element parameter according to the protection setting principle. According to the setting calculation method for the direct current system protection setting value, the electromagnetic transient simulation experiment is performed in advance, and the protection setting calculation process is abstracted and cured to form an automatic setting calculation scheme which is standard in procedure and format; accordingly, setting value calculation of direct current system protection in a direct current transmission project does not rely on electromagnetic transient simulation software any more, the reasonability of the protection setting value is guaranteed, potential hazards of operation refusal or misoperation of protection are reduced, and the good popularization value for improving the power system automation level is achieved.

The invention belongs to the technical field of nuclear power station instrument control management and provides a nuclear power station instrument control field operation standardized management platform and management platform which reduce an operating risk and improve work efficiency in such a way of establishing an equipment database and designing a data automatic analysis system and a standardized operation flow. The management platform comprises a human-machine interface device (1), an information processing device (2), a data storage module (3), and a printing device (4). The human-machine interface device (1) comprises an input module (5) and a display module (6) which are in connection with the information processing device (2). The data storage module (3) comprises an instrument control equipment essential data module (7) and a risk management and control information module (8) which are in connection with the information processing device (2). The information processing device (2) is connected with the printing device (4).

The application discloses a T3 test loop of a reactor protection system in a nuclear power station and an optimization method thereof. In the optimization method, the T3 test loop employs parallel resistance to check current loop, and comprises a plurality of test switches, wherein at least one test switch is corresponding to a multiple paths of devices, and the at least one test switch has at least two pairs of contact in parallel connection to form parallel contacts. The application has the beneficial effects that: at least two pairs of contact in the test switches are in parallel output to drive the test loop and reduce the risk of maloperation caused by high failure rate of contacts; in one embodiment, nuclear grade relay nodes are connected into the test loop to further improve the reliability of the equipment; in another embodiment, self-locking of test signal is added for interlocking test signal in the case of switch contact failure to reduce the maloperation; and in another embodiment, additional alarm signal sent to a main control enables the normal operation and monitoring on the loop, in order to reduce the risk of refusal-operation caused by scheme optimization.

The invention discloses an attached scaffold mechanism for a high-rise building, comprising a plurality of wall-attached seats longitudinally arranged on an outer wall body of a building and further comprising a scaffold main frame. A lifting base is arranged through the plurality of wall-attached seats, two side surfaces of the lifting base are respectively provided with a small guiding channel steel, a lifting screw lead is arranged in the lifting base, the scaffold main frame is provided with a driving motor, a worm rod and a worm wheel, the worm rod and the worm wheel are matched, and the lifting screw lead is arranged in a nut hole of the worm wheel; and two sides of the scaffold main frame are respectively provided with a guide wheel seat plate and are provided with a plurality of guide wheel groups through the two guide wheel seat plates, each guide wheel group comprises two laterally-tilting-resisting guide wheels, two back-tilting-resisting guide wheels, two upper belt pin guide wheels and two lower belt pin guide wheels, the two laterally-tilting-resisting guide wheels are arranged symmetrically and bilaterally. The attached scaffold mechanism for the high-rise building, disclosed by the invention, has the advantages of reasonable structure, reliable motion, and being capable of largely reducing labor strength when a worker lifts a scaffold, and improving safety.

In a method for identifying an individual, an individual is recognized using a camera, an individual being positively identified only if the position of the eyes of the individual is identified in a viewing direction-recognizing unit.

The invention discloses an active close-loop monitoring information source end maintenance method. The active close-loop monitoring information source end maintenance method includes automatically synchronizing a monitoring information maintenance plan to a regulation system of a first safety area; analyzing the monitoring information maintenance plan through the regulation system, and providing authorization to a substation background monitoring system according to content of the monitoring information maintenance plan; maintaining monitoring information according to authorization content; after completing maintenance, enabling the substation background monitoring system to automatically generate a latest monitoring information model and a latest graphic file, and trigger a maintenance and update ending signal; after the regulation system receives the maintenance and update ending signal, summoning the latest monitoring information model and the latest graphic file, and updating a monitoring information model and a graphic file in the regulation system. By maintaining an active close-loop source end of the monitoring information, the active close-loop monitoring information source end maintenance method greatly reduces a workload of monitoring information maintenance, guarantees timeliness and consistency of monitoring information updating of a master station and branch stations, and can effectively avoid safety problems of monitoring missing, or even mistaken monitoring, caused by unsynchronized updating of the monitoring information.

The invention relates to a control method of a safety diagnosis module in a rear collision of a vehicle, and includes the steps of: a) measuring and calculating a speed difference before and after the collision of the vehicle and collision acceleration in the collision; b) if the speed difference is greater than or equal to a first speed difference threshold value, entering Step c), and otherwise entering Step f); c) exploding a high-voltage power-off device; d) if the collision acceleration is judged to be greater than a first acceleration threshold value, entering Step e), and if the collision acceleration is smaller than a second acceleration threshold value, finishing the method; f) if the collision acceleration is judged to be greater than a third acceleration threshold value, entering Step g), and if the collision acceleration is smaller than a fourth acceleration threshold value, finishing the method; and g) exploding the high-voltage power-off device. The control method of the safety diagnosis module in the rear collision of the vehicle effectively protects passengers from injury caused by the rear collision of the vehicle, and remarkably reduces risks of wrong actions of various safety configurations in the collision.

The present invention relates to a kind of A / D real-time fault diagnosis method based on FPGA, A / D chip connects CPU through FPGA; FPGA completes A / D fault information diagnosis while collecting A / D data, and records A / D fault, will A / D fault information and A / D data generate a frame message and send it to the peer CPU. The present invention overcomes the deficiency that the existing CPU software cannot effectively detect SV data in real time, and provides an FPGA-based A / D real-time fault diagnosis system, which has strong real-time performance, good scalability and portability, and not only realizes SV data detection at the sampling source Data detection also helps to locate the problem of the faulty A / D chip.

The invention provides an online release method, device and system for an AIX host memory, and relates to the technical field of processing of memories for operating systems. The method comprises the steps that memory using information of an AIX host is obtained; trigger information is output according to the memory using information, wherein the trigger information is used for indicating that the AIX host is subjected to memory capacity expansion according to an online capacity expansion standard, and after the memory capacity expansion is completed, memory recognition, memory release and memory reorganization are conducted. By means of the online release method, device and system for the AIX host memory, memory resources are released on line and reorganized, system down for maintenance is not needed, and the system does not need to stop running.

The invention provides an analog disconnection fault detection method, system and acquisition device, which generates fault analog signals, performs analog-to-digital conversion on the input signals of each analog channel and the fault analog signals, and collects each analog fault at a set sampling frequency. The data after analog-to-digital conversion of the measurement channel; read the converted data, and use the sampling data of the disconnection fault analog signal as the reference value to judge whether the sampling data of each analog The sampling data of the measurement channel is compared with the reference value, and the data collected by the same analog-to-digital conversion channel for two adjacent samplings is compared for the difference. If the difference obtained by the two times of difference is less than the corresponding set value , it is judged that the analog channel has an analog disconnection fault. The invention has strong real-time performance, high detection result accuracy and high detection efficiency, reduces the risk of misoperation caused by analog disconnection, and improves the operation stability and reliability of the relay protection device.

The invention relates to the technical field of a nuclear power station reactor protection system , and provides a connection structure of a nuclear power station reactor protection system and a connection method. In the connection structure, the nuclear power station reactor protection system comprises a signal logic processing apparatus and a tester. A plurality of rectangular first connector sockets are arranged on the signal logic processing apparatus, wherein each first connector socket is respectively and sequentially connected with a first connector joint, a cable and a circular second connector socket. The tester has a plurality of second connector joints connected with the second connector sockets. Compared with the prior art, contact failure of connecting with a signal logic processing device due to force-bearing deformation of inner pins of a connector joint can be eliminated, thereby ensuring normal communication and lowering risk of shutdown and specific signal error operation. The invention provides a connection method. The risk of shutdown and specific signal error operation due to test failure can be eliminated, and ideal test effect can be achieved.

The invention belongs to the technical field of power station safety, and specifically discloses a safety monitoring method for power station operation risks: the server of the safety supervision platform automatically loads industrial safety risk data, classifies the safety risks, and provides a list of safety supervision plans; the operation group starts the operation; the server synchronizes in real time The risk level is judged by time, and the supervision instruction information is sent to the supervision team; the supervision team accepts the server and selected operation items, and records the safety supervision results; the operation team pushes the results and measures to rectify according to the server, and the corrective measures are fed back to the supervision team by the server for confirmation; the supervision team For the judgment of corrective measures, if the corrective measures are denied, repeat until the supervision team approves the corrective measures; the server confirms that the safety supervision is over, and at the same time automatically updates the industrial safety risk data, and the operation group closes the operation. The method of the present invention can monitor the safety risk of the on-site operation of the power station in real time, effectively reduce potential safety hazards, reduce the risk of equipment misoperation, improve work efficiency, and improve the safety level of the power station operation.

The invention relates to the technical field of water treatment, and discloses a quick-cleaning electrochemical water treatment equipment, comprising front and rear side plates, left and right side plates, a bottom plate, a top plate and an adjustment mechanism. The number of the left and right side plates is two and they are fixedly connected to the two sides of the two front and rear side plates respectively. , the number of adjustment mechanisms is two and they are respectively arranged on the left and right sides of the corresponding surfaces of the two front and rear side plates. Through the setting of the adjustment mechanism, the capacity between the front and rear side plates and the rubber side plates is automatically enlarged during electrochemical water treatment Thereby increasing the capacity and treatment capacity of wastewater at one time, thereby increasing the efficiency of wastewater treatment, and automatically reducing the distance between the front and rear side panels and the rubber side panels during the cleaning step, so as to use less cleaning fluid to clean the front and rear side panels and the rubber side panels. Cleaning inside the rubber side panels.