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

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.

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 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.