72results about How to "Timely detection of damage" patented technology

The invention relates to a beam bridge damage assessment early-warning method and an early-warning system based on a crack development height. According to the early-warning method, early warning is carried out when a crack in a main beam of the beam bridge requiring monitoring develops to a dangerous crack height range of a main beam mid-span cross section. The main beam mid-span cross section dangerous crack height range is provided according to a main beam resistance designed value and a main beam resistance standard value, and is determined according to a bending moment-crack height diagram of the main beam mid-span cross section. The bending moment-crack height diagram is obtained according to a cross section non-linear whole process analysis upon the bridge cross section. The early-warning system comprises conductive coatings coated on dangerous crack height ranges of various main beam mid-span cross sections of the beam bridge, and a data processing and early-warning device. The data processing and early-warning device comprises a data acquisition device, a microprocessor, and a GMS short message module. When a crack on the monitored beam bridge main beam develops to a dangerous crack height range, the system carries out early warning with a form of short messages.

The invention discloses a GPS/GIS (Global Position System/Geographic Information System)-based engineering machinery electronic controller. A CAN bus is connected with a main controller and a display controller, the main controller has all relay on-off output modules and accelerator motor control modules used for receiving operating signals in real time to control equipments to operate, and the display controller has a GPS/GIS wireless communication module and a keyboard display screen. A control method comprises the steps of receiving all working condition parameters by the main controller, and transmitting the GPS/GIS and the working condition parameters to a management center by the display controller; alarming when a positioning communication is abnormal; operating the equipment in time allowance, and relieving alarm after the communication is restored; carrying out the primary locking after exceeding the time limit, and operating an engine in an idling way; restoring the equipment in a locking time limit after contacting with a management center to obtain a password to unlock; carrying out secondary locking after the locking period exceeds, carrying out power failure and fuel cut for an entire vehicle, transmitting the password by a user after the user is in contact with the management center to confirm the equipment is in a good condition, and unlocking the equipment to restore operation. According to the GPS/GIS-based engineering machinery electronic controller provided by the invention, the position and operating condition of the equipment can be timely grasped by the management center, so as to effectively prevent stealing and damaging.

The invention discloses a tool damage detection system which comprises a working drum, a working housing, tools and tool aprons, wherein the tools are arranged on the working drum through the tool aprons; the working drum is arranged in the working housing. The tool damage detection system also comprises an infrared videography module, a data processing module and a feedback terminal. According to the tool damage detection system, in a working process of the tools, the temperatures of the tools are obviously higher than that of the surrounding environment; therefore, the infrared videography module arranged on the working housing can be used for recording the shape of a tool; the shape information is processed by the data processing module and then is finally fed to an operator through the feedback terminal, so that the damage condition of the tool can be detected. The tool damage detection system can find defects immediately in a detection process and is high in detection efficiency; a contour image of the tool under high temperature can be acquired through infrared videography, and a detection result is accurate. The invention also discloses a tool damage detection method and engineering machinery provided with the tool damage detection system.

The invention discloses a novel bridge expansion joint device for monitoring the displacement of a beam end. The device comprises a beam body 1, a beam body 2, an expansion and contraction system anda distributed displacement measurement system. The invention is connected with the embedded reinforcing bar in the beam body through the C-shaped steel and the U-shaped reinforcing bar on the supporting cross beam. As that beam body at both ends move relative to each other, the supporting beam pushes or stretches the top plate of the distribute displacement measuring system, causing the spring group to produce tension-compression deformation, and the tension-compression sensor can measure the internal force of each spring correspondingly, and convert the displacement of the beam end through awireless data transmission module. The movement of the supporting beam causes the I-shaped middle beam to move on it, and the bird-shaped rubber belt is compressed or stretched to realize the telescopic function. The invention has the advantages of simple structure and convenient installation, and can coordinate and analyze the monitored beam end displacement data with temperature and other data,and serves the bridge health monitoring field, can simultaneously evaluate the service state of the expansion joint, and improves the intelligent level of the bridge expansion joint and the bridge operation management level.

The invention discloses a road surface deformation monitoring method, which belongs to the technical field of intelligent transportation. The road surface deformation monitoring method is characterized by comprising the following steps of: a, determining a reference value according to an initial condition, and performing information interaction between monitoring devices and a server through a relay and a gateway; B, detecting pavement settlement and deformation through angle changes of attitude sensors in the monitoring devices; C, enabling the gateway to obtain a network relation mapping graph from the server, issuing the network relation mapping graph step by step according to a jurisdiction relation, completing relation mapping, and uploading posture data collected in real time to the server through the relay and the gateway through a Bluetooth network by utilizing the monitoring devices; and D, comparing attitude data acquired by the plurality of groups of monitoring devices with a reference value and historical data respectively by using the server, and acquiring a damage type and a damage range of the road section through model establishment and data analysis. According to the road surface deformation monitoring method, monitoring data can be uploaded in real time, pavement state monitoring and early warning are carried out through modeling and data analysis, and pavement settlement and displacement conditions are effectively monitored.

The invention discloses a distributed optical fiber vibration sensing system with attenuation real-time monitoring function, which is characterized in that it includes a vibration sensor, and the vibration sensor includes a driver, a modulator, an optical coupler, a photoelectric converter and a data collector, The laser is connected to the vibration sensor, and the optical fiber detector is connected to the vibration sensor for emitting laser light to the optical coupler and receiving the optical signal returned by the optical coupler. The optical fiber detector includes an optical time domain reflectometer, an optical switch and a wavelength division multiplexing device; the positive progress effect of the present invention is: real-time reading of the attenuation coefficient of the optical cable along the way, timely discovery of optical cable damage and breakpoint position, highly accurate measurement of the attenuation and damage of the entire optical cable; the wavelength division multiplexer returns when the light source reflects Other wavelengths other than the operating wavelength of the optical time domain reflectometer are filtered out, and the lasers of different wavelengths in different parts do not interfere with each other, and the measurement accuracy is high.

A method for monitoring oil and gas production,a method for obtaining a fault recognition model and a related device are disclosed. The method comprises obtaining the training data, carrying out the machine learning on the training data: determining a first parameter value range of various parameters in a normal state of the preset part and a second parameter value range of various parameters in afaulty state of the preset part, comparing the first parameter value range and the second parameter value range of the same parameter, determining an influence weight of at least one parameter of theplurality of parameters according to the comparison result, and obtaining the fault identification model for outputting fault information of a preset component according to the influence weight. Thefault identification model obtained by the invention can automatically determine the fault information of the preset parts according to the inputted multiple parameters, so that the downhole operationis not required, the downhole operation is simple and convenient, and the damage of the parts in the oil and gas production equipment can be found in time.

The invention discloses an isolation cover assembly of a magnetic force pump. The isolation cover assembly comprises an internal isolation cover, an external isolation cover, an electric heating mechanism, a circular heat conducting strip and a lining ring, wherein the internal isolation cover consists of an internal isolation cover flange, an internal isolation cover thin-wall barrel and an internal isolation cover bottom plate; the external isolation cover consists of an external isolation cover flange, an external isolation cover thin-wall barrel and an external isolation cover bottom plate; the lining ring is located between the internal isolation cover and the external isolation cover; a sealed cavity is formed among the internal isolation cover, the external isolation cover and the lining ring; the circular heat conducting strip is arranged in the middle part of the internal isolation cover bottom plate; the circular heat conducting strip is connected with the electric heating mechanism. As the isolation cover assembly of the magnetic force pump provided by the invention adopts such a structure, a heat source can reach an easy-to-crystallize medium area at an internal magnetic rotor after shut-down; therefore the restart resistance of the magnetic force pump is decreased; the service life of the magnetic force pump is prolonged; moreover, the damage of the isolation cover can be discovered in time, so that a leakage accident is avoided.

The invention discloses a method for determining the damage of a water pipe with a monitoring system. The monitoring system comprises multiple flow rate detection devices installed in the water pipe.Each flow rate detection device comprises a speed detection module for detecting the flow rate and a processor. The processors receive data collected by the speed detection modules and upload the datato a central computer through communication modules after processing, and meanwhile the communication modules send a received command from the central computer to a maintenance engineering command center and workers after processing. Pipeline damage is detected in time, the damaged pipe is maintained quickly, and the maintenance path is optimized. By the adoption of the method, the work and costof maintenance and repair can be greatly reduced, the difficulty of maintenance is reduced, and the installation and maintenance by workers are easier; and the satisfaction of building users is improved, and the risk of residents suffering from water stop loss is greatly reduced.

The invention discloses a wearing type intelligent body temperature monitoring device, which comprises a wearing element used for wearing, wherein the wearing element is provided with a plurality of temperature sensors; a monitoring thermometer is mounted to the wearing element; temperature signals detected by the plurality of temperature sensors are transmitted to the monitoring thermometer to be processed; and the monitoring thermometer transmits detected body temperature signals to a mobile terminal and/ or a remote server terminal. The wearing type intelligent body temperature monitoring device disclosed by the invention is mainly used for the body temperature monitoring of a hyperpyretic convulsion child, can find a situation that the temperature measurement sensor of the thermometer is damaged or unstable in time, can monitor the body temperature of the hyperpyretic convulsion child under various situations, including daily activities, sleeping at night and the like so as to warn and give an alarm about a fever situation, and also can remind a child guardian to carry out cooling and preventing processing in time so as to avoid injuries to the child by multi-time hyperpyretic convulsion.

The invention discloses wearable equipment for assessing the human body injury condition. The wearable equipment comprises a wearing body and a node network which is arranged on the wearing body. The node network is formed by a central processor and multiple nodes. The central processor is connected with at least one node in a signaling way and used for receiving concrete node information via the node network. Each node comprises a microprocessor and data ports. Other nodes can be extended via the data ports. The data ports are controlled to perform data communication with other nodes via the microprocessor, and finally the concrete node information is transmitted to the central processor. The wearable equipment is applied to assess the human body injury condition so that the human body injury condition can be accurately and rapidly detected and assessed.

This invention puts forward a fan blade lightning stroke monitoring method based on a ZigBee protocol. A system comprises a plurality of routing function nodes, a coordinator and a cabin control cabinet, wherein the routing function nodes are arranged in fan blades and used for collecting the temperature and the light brightness in the fan blades in a starting state; the routing function nodes are in mutual communication based on the ZigBee protocol and are in communication with the coordinator based on the ZigBee protocol, and therefore any routing function node can directly transmit collected data representing the temperature and the light brightness in the fan blades to the coordinator or transmit the collected data to the coordinator through other routing function nodes; besides, when the coordinator receives the collected data from the routing function nodes, the collected data are transmitted to the cabin control device.

The invention relates to the field of building equipment detection, in particular to a steel cable detection device for building engineering hoisting equipment. The device comprises a suspension arm, wherein a support rod is fixed on the suspension arm, a fixed shaft at the lower end of the support rod is rotatably connected with a rotating shaft, a work guide wheel for supporting and guiding a steel cable is fixed on the rotating shaft, a detection mechanism used for detecting the steel cable is arranged on the suspension arm, an air pumping mechanism used for removing dust on the detection mechanism and the steel cable is further arranged on the suspension arm, and the guide wheel is in transmission connection with the air pumping mechanism. According to the steel cable detection device for the constructional engineering hoisting equipment, a camera is arranged on the outer side of the steel cable, and the outer surface of the steel cable is detected through the camera, so that a damaged part on the surface of the steel cable can be found in time, and potential safety hazards can be found in time. In addition, by means of removing dust on the surfaces of the steel cable and the camera in real time through the air pumping mechanism, it is ensured that the camera can clearly photograph the surface condition of the steel cable, and the detection accuracy is improved.

The invention relates to an automatic detection method for damage of a glass curtain wall of a high-rise building, and the method comprises the steps: constructing a detection network, carrying out the training and verification of the constructed detection network through a sample set, and obtaining a detection network with optimal parameters. A convolutional layer in the YOLO v4 network is replaced by expansion convolution, channel-by-channel convolution and point-by-point convolution which are connected in sequence to obtain a new convolutional layer, and finally, the YOLO v4 network after replacement is used as a constructed detection network; pruning the detection network with the optimal parameters according to the scaling factor vectors of all the BN layers; and finally, performing fine tuning on the pruned detection network with the optimal parameters by using the sample set to obtain a final detection network. Therefore, the method further reduces the parameter quantity of the model on the premise of ensuring high accuracy, and realizes the full-automatic detection of the glass curtain wall of the urban high-rise building based on the unmanned aerial vehicle.

The invention belongs to instruments, and discloses a corrugated pipe damage detecting instrument. The corrugated pipe damage detecting instrument is characterized in that the corrugated pipe damage detecting instrument is composed of a shell, a piston, a piston rod with a shaft shoulder, a corrugated pipe, a spiral spring and a capping plug. The shell is provided with a step hole penetrating through the two ends of the shell, and one end of the step hole is a neck part in threaded connection with a drainage guide hole in the valve deck of a corrugated pipe valve. The capping plug seals the piston, the piston rod, the corrugated pipe and the spiral spring in the step hole, the piston and the corrugated pipe are arranged on the rod body on the two sides of the shaft shoulder of the piston rod respectively in a sleeved mode, one end of the corrugated pipe is in sealing welding with the shaft shoulder, and the other end is in sealing welding with the end surface of the capping plug. The spiral spring is arranged on the periphery of the corrugated pipe in a sleeved mode, the two ends of the spiral spring abut against the piston and the end face of the capping plug respectively, and the tail end of the piston rod is flush with the outer end face of the capping plug or extends outwards for a certain length L1. The effects that the breakage of a valve corrugated pipe can be found out in time at an early stage without dismounting and media leakage is prevented from endangering the human body safety and the property safety in a detection process are achieved.

The invention relates to a road network level pavement flatness detection method based on multi-vehicle crowdfunding vibration data, and the method comprises the following steps: obtaining the vibration data of a test vehicle, and carrying out the preprocessing of the vibration data; taking a road section of which the flatness index gradient is greater than a preset threshold value in the road network to be detected as a known flatness road section, and obtaining the flatness index of the known flatness road section; acquiring a driving track of the test vehicle, acquiring a vehicle number threshold value according to the driving track of the test vehicle and the known flatness road section information, extracting the vehicle of which the number of times of passing through the known flatness road section is greater than or equal to the vehicle number threshold value as a calculation vehicle for current iteration, acquiring vibration data of the calculation vehicle, and pre-estimating vehicle parameters of the calculation vehicle; calculating a flatness index of the road section with unknown flatness based on the estimated vehicle parameters; and repeatedly carrying out iteration for multiple times until the flatness indexes of all the road sections in the road network to be detected are obtained. Compared with the prior art, the method has the advantages of high accuracy, good stability, low cost and the like.

The invention discloses a vehicle management system of a green building, relates to the technical field of vehicle management systems, and aims to solve the problems that a vehicle management system in the current market cannot detect whether collision damage occurs or not during use of a vehicle, and the damage cannot be found in time. The damage detection system comprises a vehicle owner registration module, a license plate corresponding system, a damage comparison module and a damage shooting system, and the intentional damage system comprises a surrounding human body infrared sensor, a face recognition shooting system, a damage judgment system and a damage alarm system. The damage shooting system comprises a vehicle body shooting adjusting system, a vehicle chassis shooting adjusting system, an ultrasonic parking space detector, a chassis camera and a vehicle surface shooting head, a parking space frame is arranged on the upper surface of the ground, a center protection glass plate is arranged in the middle of the interior of the parking space frame, and a supporting layer is arranged below the parking space frame, and a storage groove is formed below the supporting layer.

The invention discloses a level glass structure of an air conditioning refrigerant filter, which comprises a shell; a filtering structure formed from a filtering net and a spring supporting the filtering net is arranged in the shell; and the shell is provided with a level window for observing the working state of the interior filtering structure and the flow direction of a refrigerant. The level window comprises an opening formed on the shell and a door-shaped window frame inlaid on the periphery of the opening, and an insertion slot is formed on the door-shaped window frame; the level window is also provided with a level glass, and the level glass is installed on the door-shaped window along the insertion slot and is fixed through a fixing element. A sealing element is also inlaid in the insertion slot. The level glass structure of the air conditioning refrigerant filter is simple in structure and convenient to manufacture and install. The flow situation of the refrigerant in the filter shell can be clearly observed and the filtering net can be observed through the level glass provided by the invention, the damage of the filtering net can be found in time, the filtering net or the filter can be replaced in time, and the normal operation of an air conditioner can be effectively ensured.