91results about How to "Avoid unsafe accidents" patented technology

The invention discloses a method for detecting a locomotive bearing fault. For a practical condition of the locomotive, the method disclosed by the invention adopts a combination of a temperature detection method and a vibration detection method to perform detection on a bearing fault of the locomotive. When the temperature detection is employed to detect the locomotive bearing fault, a temperature trend analysis method and an advanced interference processing method of catching an early warning and protecting alarm. When the vibration method is adopted to detect the locomotive bearing fault, the combination of the simple diagnosis and the precise diagnosis and the combination of the vibration detection and shock pulse detection are adopted. As a result, the invention can perform early alarm on the axle fault of the locomotive, can promptly process the axles having an early stage fault, and prevent the unsafe accident from happening.

The present invention discloses a multi-stage pulse synergistic perforating system for oil-gas well. Said system is characterized by that on the basis of adopting detonator for resisting sand impact and synergistic perforating gun said invention utilizes synergistic gun tail, connecting component and threaded connecting component to make second-stage synergistic gunpowder with higher combustion velocity and third-stage synergistic gunpowder with lower combustion velocity be added into the construction pipe string, and the adopted partition board time-delay fire lighter can light the next-stage synergistic gunpowder after a period of time after the last-stage perforating gun is perforated so as to form several gunpowder pressure pulses to fracture formation and make the fracture be continuously extended. Besides, the proppants in two synergistic gunpowders can be fed into the formation fracture together with high-temperature high-pressure gas so as to prevent the formation fracture from being closed.

The invention relates to a position prompting method and a position prompting device. The position prompting method comprises the steps of acquiring the current area of an intelligent watch; determining the safety grade of the current area of the intelligent watch according to the current area of the intelligent watch and a preset area safety grade correspondence table; and transmitting prompting information to terminal equipment according to the safety grade of the current area of the intelligent watch so that user of the terminal equipment can acquire the safety grade of the area in which a child who wears the intelligent watch exists, thereby ensuring high safety of the child.

The invention relates to the technical field of railway equipment and provides a turnout steel rail damage monitoring method and device. The device comprises a sensor, a monitoring extension, a monitoring host and a data center, wherein the sensor is mounted on a turnout steel rail and transmits collected characteristic data to the monitoring extension; after processing the characteristic data, the monitoring extension transmits processing results to the monitoring host; the monitoring host processes the processing results and performs appointed distribution; the data center manages the entire device and controls a client terminal according to reprocessed data The turnout steel rail damage monitoring device solves the technical problem that, when rail circuits and large rail inspection vehicles are utilized to detecting damage of steel rails, rapidly-developed tiny cracks cannot be identified effectively and accordingly lead to non-detection zones. Further, the turnout steel rail damage monitoring device can effectively identify the tiny cracks on the turnout steel rail to overcome the non-detection zones.

The invention relates to the technical field of access control systems, in particular to a video monitoring safety access system which is applied to an access control system in a power equipment maintenance area. The video monitoring safety access system comprises a video acquisition device, a video analysis module and a control module, wherein the video acquisition device is used for acquiring clothes characteristic image information of a maintenance user; the video analysis module is used for analyzing and processing the acquired clothes characteristic image information of the maintenance user and judging whether clothes of the maintenance user are consistent with a standard dressing style or not; the control module is used for controlling opening of a gate of the access control system in the power equipment maintenance area when the video analysis module judges that the clothes of the maintenance user are consistent with the standard dressing style. The video monitoring safety access system solves the technical problem that in the prior art, safety measures in a maintenance site are inadequately monitored, and thus can strictly monitor the safety measures so as to avoid unsafe accidents.

The invention provides a hazardous area warning method and device. The method comprises the steps that a beacon frame transmitted by a beacon is received, wherein the beacon frame comprises the identifier of the area where the beacon is located; whether the area where the beacon is located is a hazardous area is determined according to the identifier of the area where the beacon is located; if the area where the beacon is located is a hazardous area, an intelligent device prompts that a user is going to enter the hazardous area. According to the method, the intelligent device can detect the surrounding hazardous area in advance and prompts the user to prevent unsafe accidents.

The invention discloses a temperature sensing color changing photovoltaic module. The photovoltaic module is composed of tampered glass, a transparent EVA adhesive film, crystalline silicon battery pieces, a temperature sensing EVA adhesive film, a white EVA adhesive film and a photovoltaic backboard from top to bottom in sequence, wherein the temperature sensing EVA adhesive film is a pre-cross-linking adhesive film with the cross-linking degree being 40-60%. The temperature sensing EVA adhesive film is additionally arranged in the photovoltaic module, and the photovoltaic module can carry out direct color changing display according to temperature values under irradiation of the sun, so that temperature changes in all areas on the photovoltaic module are known comprehensively, the work that working personnel carry out measurement point by point is omitted, and safety accidents are avoided.

The invention discloses a heat-pipe type boiler/furnace/kiln flue-gas waste-heat recovery device which externally consists of a cylindrical horizontal vessel and a heat pipe set, wherein the cylindrical horizontal vessel is provided with a support, supported on the outside of the top of a flue by the support, and respectively connected with a water inlet valve, a safety valve, a pressure gauge, a discharge valve, a water outlet valve, a liquid level meter and a blow-off valve by pipes; the heat pipe set is composed of a plurality of heat pipes which are arranged according to a certain rule, the upper half parts of the pipes stretch into the water in the horizontal vessel, and the lower half parts of the pipes are inserted in the flue, so that mediums in the pipes are heated by high-temperature flue gas in the flue so as to form a steam flow, the steam flow transfers heats to the upper half parts of the heat pipes in the process of upward movement and then transfers the heats to the water in the vessel, after the heats are released, the mediums are condensed into liquid, and then the liquid flows back to the lower half parts of the heat pipes, after the process is circulated repeatedly, the heats in the flue gas are collected and rapidly transferred to the vessel so as to heat the water in the vessel to a high temperature. The waste-heat recovery device disclosed by the invention is high in heat efficiency, less in heat-transfer loss, safe and reliable.

The invention discloses an intelligent crawling control strategy for a pure electric vehicle. Judgment conditions for entering crawling are added, i.e., a driver off-seat alarm is invalid, a driver safety belt unfastening alarm is invalid, and a radar detection alarm signal is invalid. The two judgment conditions of the driver off-seat alarm is invalid and the driver safety belt unfastening alarmis invalid are met, the driver meets requirement of safe driving; and if the driver off-seat alarm is valid or the driver safety belt unfastening alarm is valid, a seat sends a load control alarm signal to an instrument, and the instrument sends an alarm icon and reminds the driver to recover the correct sitting posture and fasten the safety belt. The radar detection alarm signal detects whether pedestrians or obstacles exist on a preset advancing road of the vehicle or not through four radars so as to determine whether the vehicle is suitable for entering the crawling function or not. According to the invention, the perception ability of the vehicle to the driving intention of the driver and the surrounding environment is enhanced, wrong driving behaviors caused by misoperation, forgetting and non-standard driving habits of the driver are reduced, and unsafe accidents are avoided.

The invention relates to the technical field of optical-fiber sensing, and provides a distributed optical-fiber monitoring method and device of structure cracks. The device includes a distributed sensing optical cable, a distributed optical-fiber demodulator, a monitoring host and a data center. The distributed sensing optical cable is installed at a surface or an inside of a structure body. The distributed optical-fiber demodulator is installed near the structure body, is connected with the distributed sensing optical cable, collects feature data of the surface or the inside of the structurebody, and transmits the same to the monitoring host. The monitoring host processes the feature data, and then carries out assigned distribution. The data center manages the entire device, and controlsa customer terminal according to data after reprocessing. The problem that when crack detection is carried out by the prior art, intelligent seam finding and seam control cannot be carried out, and blind areas of detection exist are solved, then the structure cracks can be effectively identified, and the problem of the blind areas of detection is overcome.

The invention discloses a thermal power plant risk pre-control management system based on a virtual physical information fusion technology. The system comprises a high-precision positioning system, anequipment data resource pool system, a three-dimensional software integration system and an active security database system. The high-precision positioning system collects position information of important mobile equipment of a thermal power plant and real-time position information of operators and common mobile equipment of the thermal power plant, and transmits the collected information to theequipment data resource pool system. The three-dimensional software integration system collects three-dimensional model information of a whole plant, performs lossless compression on data and transmits the data into the equipment data resource pool system. The equipment data resource pool system provides plant equipment operation state information, constructor operation information, safety management information and the like for the safety database system. The system can realize dangerous pre-control management intellectualization by effectively integrating high-precision positioning, a three-dimensional data model, an active safety database and the like.

The invention provides an electric automobile intelligent control method for improving economy of a whole automobile. A slope climbing automobile speed control module (A), a load monitoring module (B)and an intelligent control module (C) are comprised. The slope climbing automobile speed control module (A) can adjust the highest automobile speed of the whole automobile in the slope climbing process in a self-adaptive mode, and the economy of the whole automobile is optimized. The load monitoring module (B) cooperates with a data network of a remote monitoring platform, so that the fleet management is facilitated, the direction of goods can be tracked in real time, and the occurrence of unsafe accidents caused by overload by a driver can be avoided. The intelligent control module (C) adjusts the actual torque output of an electric driving system in a self-adaptive mode through load data uploaded in real time, and the economy of the whole automobile is further optimized. Secondly, the peak discharge current of a lithium battery can also be greatly reduced through the control strategy, so that the discharging current of the lithium battery tends to be smooth, the service life of thelithium battery can be effectively prolonged, and the capacity attenuation of the lithium battery can be effectively reduced.

The invention relates to full-automatic anti-light decay laser processing equipment of a solar cell sheet. A mechanical rotating arm assembly, a rotating temperature control adsorption work bench and a cell sheet transfer module are arranged on a processing table surface separately, wherein the rotating temperature control adsorption work bench and the cell sheet transfer module are distributed at two sides of the mechanical rotating arm assembly and can horizontally rotate on the processing table surface; two groups of temperature control suction cup modules which are symmetrically distributed side by side are arranged at the upper end of the rotating temperature control adsorption work bench; a feeding suction cup and a cooling and blanking suction cup are arranged at two ends of the mechanical rotating arm assembly; the feeding suction cup and the cooling and blanking suction cup can rotate to the upper parts of one group of temperature control suction cup modules or the cell sheet transfer module separately in the rotation process of the mechanical rotating arm assembly; and a laser generator module is located at the upper parts of the other groups of temperature control suction cup modules. The full-automatic anti-light decay laser processing equipment has the advantages of being simple in structure and convenient to use; quick cooling after preheating and processing can be achieved in the processing process of the cell sheet; and the processing efficiency is relatively high.

The invention relates to the field of power transmission line on-line monitoring, in particular to a power transmission line monitoring system of a combined iron and steel enterprise. The system comprises an insulator corona discharge monitoring module arranged on a transmission line between two transformer substations and used for collecting corona traveling waves generated on the transmission line; an external damage prevention monitoring module which is arranged around the transmission line and used for collecting border crossing behavior information and/or invasion behavior images of the surrounding environment; a partial discharge monitoring module which is arranged at the grounding part of the cable joint and is used for acquiring a partial discharge pulse current signal of the cablejoint; and a main control module which is used for determining the position of a pollution flashover fault point based on the corona traveling wave, also used for sending an alarm signal to the position where the border-crossing behavior and/or the intrusion behavior occurs based on the border-crossing behavior information and/or the intrusion behavior image and used for determining the insulation degradation degree of the cable joint based on the local pulse current signal so as to effectively monitor various potential safety hazards on the power transmission line of the iron and steel enterprise.

The invention provides a scratch-resistant low-speed cracking PE fuel gas pipe and a preparation method thereof, and belongs to the technical field of conveying pipes. The scratch-resistant low-speedcracking PE fuel gas pipe comprises a main body structure layer and a protecting layer. The main body structure layer is a PE material, and the protecting layer is a crosslinking material. A thicknessof the main body structure layer is greater than a thickness of the protecting layer. The scratch-resistant low-speed cracking PE fuel gas pipe is capable of increasing properties of wear resistance,scratch resistance, low-speed cracking and the like of the PE fuel gas pipe, keeping all advantages of the original PE fuel gas pipe, prolonging the service life of the PE fuel gas pipe, and avoidinga safety accident.

The gas burning radiation roaster has casing with opened upper part, ceramic glass part for setting matter to be cooked, exhaust channel formed below the ceramic glass part, fuel gas canal and radiation burner to burn mixed gas for producing cooking radiation energy source. The heat separating structure is installed below the burner canal and ceramic glass to prevent high temperature gas form being heated. During the high temperature burning gas passes through the exhaust channel, the cover over the exhaust port is used to protect the ceramic glass part from becoming heat and ensure safety.