62results about How to "Avoid catastrophic consequences" patented technology

The invention relates to a synchronous virtual inference device for underwater unmanned vehicle observation tasks. The synchronous virtual inference device for the underwater unmanned vehicle observation tasks is applied to observation tasks and comprises a water surface monitoring computer 1, a multi-channel communication device 2, a virtual vehicle system task management computer 3, a virtual vehicle system motion control computer 4, a virtual display computer 5, an external measuring positioning device 6, a real vehicle system 7 and a virtual vehicle system 8. The synchronous virtual inference device can accurately and synchronously predict the positions of the vehicles and the postures of the vehicles when the vehicles execute tasks, displays sailing tracks of the vehicles in real time, avoids unsafe actions which cannot be monitored manually and are caused by underwater communication obstacles, provides a visual estimation method for testers and users, and has great importance in improvement of the safety and the reliability of the underwater unmanned vehicles.

The invention discloses a method and a device for automatically monitoring the subgrade settlement. The device for automatically monitoring the subgrade settlement is characterized by comprising a first measuring head P1 arranged on a first settlement monitoring point, a second measuring head P2 arranged on a second settlement monitoring point, ..., and an Nth measuring head PN arranged on an Nth settlement monitoring point, a pressure stabilizing device, a control terminal, a liquid filling port and an exhaust port; each measuring head comprises a pressure sensor and a data acquisition circuit and is packed in a mechanical structure, and the pressure sensor and the data acquisition circuit of each measuring head are electrically connected to be connected to the control terminal in a wired or wireless manner; and the measuring heads are connected through a pipeline, the liquid filling port and the exhaust port are installed on the pipeline, and the pipeline is closed and full of liquid. According to the method and the device for automatically monitoring the subgrade settlement, the closed liquid is used as a pressure transmission medium, so that the settlement monitoring is slightly influenced by the environment, the monitoring accuracy is high, the effect on site operation is small, capacity resistant to sudden disasters is strong, the reliability is high, and the fully-automatic continuous monitoring is realized. Therefore, the method and the device can be widely applied to automatic settlement monitoring in roadbed construction period and operating period of railways, highways and the like.

A method for preventing the tornado, lurricane, flood and hail includes forcasting them, artificially forming one or more raining bandsin cumulonimbus, and artificial raining to eliminate the natural condition of generating them.

A high-strength and-toughness metallic shift with gradient structure features that it is composed of 2-15 days which are respectively made of expensive high-quality alloy steel and cheap carbon steel or microalloyed steel. The high-strength antiwear materials are used for its surficial layers and the high-toughness materials are used for its core layers in order to transfer torque. Its preparing process is also disclosed.

The utility model discloses an access confliction disposing method of pseudo asynchronous double port image memory which adopts a confliction disposing method based on task scheduling and opportunely performs reasonable distribution scheduling of line scanning operation so as to eliminate the confliction cases radically, thereby ensuring no confliction when operation requests are sent at two ports. In the utility model, the reading or writing operation period of external MPU is divided into two operation areas, in the first operation area a GRAM reading or writing operation performed by the MPU is finished, the second and third operation areas are used to trigger the line scanning request of the GRAM display ports, wherein in the second operation area, the line scanning request is triggered by an inner OSC clock; in the third operation area, the line scanning request is triggered by an external reading or writing operation request, simultaneously the redundancy of both the second operation area and the third operation area is utilized to eliminate the disaster brought by meta-stable effect, thereby improving reliability of the confliction circuit.

The invention relates to a sleeve joint tension capacity evaluation method taking grouting compactness into consideration. The sleeve joint tension capacity evaluation method taking the grouting compactness into consideration includes providing values of key parameters A and B according to a test, computing actual steel bar-grouting material bonding force according to a steel bar-grouting material bonding force slip model, computing tension capacity of jointed steel bars according to a jointed steel bar tension capacity computational formula, and providing sleeve joint tension capacity by comparing the steel bar-grouting material bonding force with the jointed steel bar tension capacity. The sleeve joint tension capacity evaluation method taking the grouting compactness into consideration is capable of evaluating the sleeve joint tension capacity through sleeve and steel bar design parameters.

The invention relates to a template sealing strip for preventing the root of a hydraulic reinforced concrete retaining wall from rotting. The template sealing strip is composed of a flexible tubular body, springs, a circular truncated cone body, circular magnets and an adhesive body, wherein the springs are uniformly distributed in the flexible tubular body, the lower ends of the springs are welded with the circular truncated cone body, the circular truncated cone body is bonded with the flexible tubular body, the circular magnets are welded on the upper ends of the springs, the circular magnets are bonded with the flexible tubular body, and the adhesive body is bonded to the upper surface of the flexible tubular body. The template sealing strip has the advantages of simple, novel and reasonable structure, easiness in manufacturing, convenience in operation and strong practicability, the common problem that the root of the reinforced concrete retaining wall rots can be solved, the effects of attractive appearance and high quality of the reinforced concrete retaining wall can be achieved, and the design requirement is satisfied.

The invention relates to a secondary open-circuit intelligent protection system for a current transformer. The system includes a CT secondary circuit terminal block. A CT secondary circuit terminal block relay switch is installed on the CT secondary circuit terminal block. The output side of the relay switch is connected to an acquisition module. , the output of the acquisition module is connected to the A/D conversion module, the A/D conversion module is connected to the data judgment processing module, and the CT secondary circuit terminal block output threshold is set in the data judgment processing module. When the received signal is greater than the threshold value, the data The judging processing module sends a trigger signal to the relay switch coil to make the relay close, and at the same time, the data judging processing module is connected with the data communication module, and sends the received data to the background monitoring computer. The invention can close the CT secondary circuit when the CT secondary open circuit generates high voltage, eliminate the risk of the iron core overheating and burning the winding, and eliminate the threat brought by the secondary side high voltage.

The invention relates to a shield machine with a multi-section spherical hinge structure, which comprises a front shield, a middle shield, a tail shield and hinge oil cylinders, wherein a spherical ring steering structure is arranged between the front shield and the middle shield; a spherical ring steering structure is arranged between the middle shield and the tail shield; the hinge oil cylindersare respectively arranged between the front shield and the middle shield and between the middle shield and the tail shield; the shield machine achieves two-stage steering adjustment during small radius turning of the shield machine through the two spherical ring steering structures between the front shield, the middle shield and the tail shield, and when the shield machine turns, the distributionon the segment circumference of the thrust force acting on the segment end surface of the shield machine has a smaller difference. According to the invention, not only improves the amplitude of the swing of the shield body, but also the reliability of the sealing at the hinge parts of the shield machine is effectively improved and the damage to the segment is reduced.

The invention provides a motor control mode fault detection method and device. The motor control mode fault detection method comprises the steps of obtaining first rotating speed ns of an inductive control mode and second rotating speed nsl of a non-inductive control mode under the current throttle of a motor, and calculating a relative error [delta]n between the first rotating speed ns and the second rotating speed nsl; judging whether an absolute value of the relative error [delta]n is greater than a preset threshold or not; if the absolute value of the relative error [delta]n is greater than the preset threshold, determining that the inductive control mode is abnormal; and if the absolute value of the relative error [delta]n is less than or equal to the preset threshold, determining that the inductive control mode is normal. According to the embodiment of the invention, the accuracy of motor control mode fault detection can be improved, and the motor control mode can be switched into the non-inductive control mode more timely and effectively in the case that the inductive control mode fails, thereby avoiding disastrous consequences brought about by motor control errors caused bysensor failure.

The invention relates to a safety life-saving chamber capable of being used in usual time and emergency and automatically escaping, opening a parachute and landing softly. Inverted caret-shaped slopes formed by tops and bottoms of octagonal spherical chambers of the safety life-saving chamber and a fuselage form the fitting channel type relationship, thick flanges at the upper, the lower, the left and the right parts of a chamber body and two bracket-shaped channel type fasteners at the upper and the lower parts of the fuselage form the fitting relationship, the planar anti-rotation relationship is formed between the fronts and the backs of all the octagonal spherical chambers which are arranged along a longitudinal line, and a concave table folding side at the bottom of the chamber can be used for positioning for the lower part and loading for the above part. An upper lining plate, a lower lining plate, four hollow screw rods and screws for penetrating the chamber top and the chamber bottom and three butterfly-shaped shelves lead the chamber to constitute a life-saving device with good integrity and impact resistance. The parachute is fastened on an annular handle at the chamber top, foam plastic partition boards are arranged among the various chamber tops for preventing the parachutes at the various chamber tops from winding, and big and small conical springs are arranged at the chamber bottom, so that the safety life-saving chamber can not only prevent the imbalance of gravity generated during the up-and-down tilts and the left-and-right tilts during the flight of a plane, but also realize the automatic rapid escape, parachute opening and soft landing in emergency; furthermore, the safety life-saving chamber can separate the chamber and the parachute when falling into the sea and use a sealing cover with a vent pipe for inputting oxygen into the chamber.

The invented mining method includes the following steps: using two working faces to be mined as one group, firstly, at two sides of working face to be mined, back towards main tunnel of mining area driving tunnel in depth, then making mining direction be identical to tunnel-direction and further driving in depth, after the mining-stopping line is reached, changing the tunnel-driving trend into semi-circular form or arc form, transferring working face and driving in the mode of fan-shaped form, after the working face is rotated to 180deg. and the secondary heading of semi-circular trend is communicated with main heading of the working face, mining towards direction of main tunnel of mining area to make back production.

The invention relates to a double-redundancy hot backup actuator electromagnetic-lock locking, unlocking and monitoring circuit. The circuit comprises a DSP controller and an actuator electromagnetic-lock, and the unlocking, locking and monitoring circuit comprises two controlling circuits, two locking and unlocking circuits, two voltage monitoring circuits and two current monitoring circuits. Thetwo locking and unlocking circuits work in a double-redundancy hot backup mode, and when electromagnetic-lock unlocking fails in one locking and unlocking circuit, the other locking and unlocking circuit can independently realize the locking and unlocking of the electromagnetic-lock, and the reliability of unlocking and locking is thus improved; and the monitoring circuit can realize locking-unlocking state checking and circuit health state evaluation and then transmits state information and circuit health state evaluation to a remote main control station. The double-redundancy hot backup actuator electromagnetic-lock locking, unlocking and monitoring circuit has an isolation function, a second optical coupler, a fourth optical coupler and a third power supply module can achieve control and detection of a locking mechanism and effective isolation of the locking mechanism; and when the electromagnetic-lock breaks down, a load can be isolated from a power supply, and more serious consequences are thus avoided.

The invention relates to a monitoring device and a method. The device comprises a main management module, multiple sub management modules and a manager terminal. When one monitored system has abnormity, the corresponding sub management system corresponding to the abnormal monitored system takes control and processing actions without any manual auxiliary operation. The main management module makes determination, employs corresponding motion modes for the dependent monitored system and notifies the dependent monitored system to take corresponding motions through the corresponding sub management module. After the abnormal system recovers, the whole system functions recover through steps above gradually. A user can communicate with the main management module through a management interface and can send a special instruction to the monitored system. Through the method and the device, a problem that the whole dependent system is abnormal or even collapses because of abnormity of one system can be effectively settled.

The invention discloses a rotary acceleration type takeoff launching rack for an aircraft carrier. The rotary acceleration type takeoff launching rack comprises a launching rack upright column, launching rack arms and a lifting oil cylinder. The launching rack upright rod is an upright column is an upright column with axial acceleration and rotation functions; the telescopic launching rack arms are arranged on the upper portion of the launching rack upright column, and automatic grips are arranged at telescopic ends of the launching rack arms; the lifting oil cylinder is arranged on a column body of the launching rack upright column, and a telescopic end of the lifting oil cylinder is connected with the launching rack arms; the rotary acceleration type takeoff launching rack comprises a warning director takeoff launching rack, unmanned aerial vehicle takeoff launching racks and ship-borne fighter aircraft takeoff launching racks. The rotary acceleration type takeoff launching rack can be arranged on decks of two ship sides of the aircraft carrier, the warning director takeoff launching rack, the unmanned aerial vehicle takeoff launching racks and an island of the aircraft carrier are arranged on the same side of the aircraft carrier, and the ship-borne fighter aircraft takeoff launching racks are arranged on the other side of the aircraft carrier. The rotary acceleration type takeoff launching rack has the advantages of safety, high efficiency, simple structure, small occupied space and low manufacturing cost and energy consumption.

The invention relates to the technical field of information security storage and in particular relates to a user-oriented hardware password manager. The user-oriented hardware password manager comprises a password manager for a lower computer and an upper computer unit; the password manager for the lower computer consists of a main control MCU (Micro-programmed Control Unit), a fingerprint authentication module and a password storage module; the main control MCU is connected with the fingerprint authentication module and the password storage module through a data lead wire; the upper computer unit consists of a serial port communication module and a password information inquiring and displaying module; the upper computer unit is connected with the password manager of the lower computer through the serial port communication module and a network. With the adoption of technologies of hardware storage, on one hand, fingerprint authentication and interaction, one main password manager can be conveniently used for managing a plurality of account password data; and on the other hand, the disastrous results caused by the fact that main passwords are revealed are creatively avoided.

The invention discloses template sealing equipment for preventing root rot of a water conservancy and hydropower engineering retaining wall. The equipment consists of a flexible tubular body, springs, cylinders, conical bodies, circular truncated cones and an adhesive body; the springs are uniformly distributed in the flexible tubular body; the lower ends of the springs are connected with the circular truncated cones in an inserting manner; the circular truncated cones are bonded with the flexible tubular body; the upper ends of the springs bear and are inserted in the cylinders; the conical bodies is welded on the cylinders, and penetrates through an upper side wall of the flexible tubular body; and the adhesive body is adhered to the flexible tubular body. The equipment is simple, novel and reasonable in structure, easy to manufacture, convenient to operate and high in practicability, can prevent generation of the common problem of root rot of a reinforced concrete retaining wall, and can realize good appearance effect, high quality and long service life of the reinforced concrete retaining wall.

The invention discloses an electrical equipment partial discharge fault field detection and positioning device and method, and relates to the technical field of electrical equipment partial discharge detection and positioning. The device comprises an ultrasonic receiving array used for collecting ultrasonic signals; a signal conditioning module which is used for filtering and amplifying the ultrasonic signals acquired by the ultrasonic receiving array; an A/D conversion module which is used for performing analog-to-digital conversion on the pulse electric signal sent by the signal conditioning module; an image acquisition module which is used for acquiring video image signals of the electrical equipment in real time and is arranged at the central position of the central row of the ultrasonic receiving array; a double-shaft tilt angle sensor which is used for measuring the space angle of the device; and a central processing unit which comprises a signal processing module and an information fusion module. When the device is used, the device does not need to directly face a fault part, and can quickly detect and accurately position partial discharge fault positions of different types of electrical equipment on site as long as the device is placed in front of a detected object, and visual display is carried out.