32results about How to "Timely detection of defects" patented technology

The invention provides a power network development capability comprehensive diagnosis index system establishment method. The method comprises the following steps of 1, establishing a target layer, which is a power network development diagnosis index system; 2, establishing a control layer, which comprises 6 indexes including a power network scale, a power network structure, utilization efficiency, safety reliability, an equipment level and an operation environment; 3, establishing a network layer, which comprises 39 indexes corresponding to the indexes of the control layer respectively; 4, calculating weights omega i of the indexes based on a analytic network process; 5, building an aggregation model; and 6, displaying a diagnosis result. According to the method, in combination with a power network development law, starting from limitations of power network development conditions and external factors, related indexes influencing power network development are selected, and from the perspective of long-term power network development, the limitations of resources such as energy resources, environments, lands and the like on the power network development are considered, so that an innovative index is proposed.

The invention provides a bridge deformation monitoring method. A permanent benchmark point is arranged in a pier top position in a bridge girder box chamber, and a cross section monitoring point is arranged in each segmental beam; the height difference between the cross section monitoring point in each segmental beam and the benchmark point is measured through a level gauge, so that the elevationof the cross section monitoring point in each segmental beam is obtained through calculation; and the deformation situation of each segmental beam can be mastered by comparing the measured elevation numerical values of the cross section monitoring points in the segmental beams, so that the purpose of continuously monitoring the deformation condition of a bridge is achieved. By applying the monitoring method, the construction period and the operation period of the bridge can be continuously monitored, so that the abnormal situation of the bridge in the construction and operation processes can be found in time. The invention further discloses a monitoring point arrangement device adopted by the bridge deformation monitoring method. The monitoring points are fixedly arranged on a web plate inthe bridge box chamber through supporting parts. The device is simple and reliable in structure and easy to install, and the accuracy of measuring data is effectively guaranteed.

The invention provides an electric automobile and a battery management system thereof. The system comprises single batteries, a mother board and a plurality of daughter boards, the daughter boards corresponding to a plurality of single batteries exchange information with the mother board through CAN (controller area network) buses, acquire temperature information and voltage information of the single batteries and transmit the information to the mother board, the mother board/daughter boards can calculate the score of the daughter boards according to the variance of average temperature and thevariance of average voltage of the daughter boards within a certain time period by score parameters obtained by a ranking algorithm, and the mother board/daughter boards can dynamically adjust the priority of the daughter boards according to the score of the daughter boards. The system solves the problems that a traditional battery management system adopts a static scheduling algorithm in communication, consequently, important data information sometimes cannot be transmitted or timely transferred, and the traditional battery management system cannot timely find battery defects. Daughter boardmessage transmitting reliability and safety are realized, and the performance of the electric automobile is further improved.

The invention discloses an imaging method and a device used for thermal-state cylindrical long product surface quality visual detection. The imaging device comprises a plurality of imaging units, a control system, and a synchronous adjusting mechanism; position parameters, needed to be adjusted, of the imaging units are obtained via calculation by the cylindrical long product outer diameter control system via the synchronous adjusting mechanism; and automatic adjusting of the imaging units is realized via the synchronous adjusting mechanism. The imaging method and the device can be used for detecting surface quality of cylindrical long products of different types of a same unit; a visual detection system can be used for adjusting the position of the imaging units based on the outer diameter of the cylindrical long products, so that distance from an imaging sensor to the surfaces of the cylindrical long products is maintained to be constant, stable high-quality images are obtained, stable on-line detection of the surface quality of the thermal-state cylindrical long products is realized, surface defects of the cylindrical long products are discovered in time, batch defects are reduced, and finished product yield is increased.

The invention provides an electric automobile and a battery management system thereof. The system comprises a mainboard, a plurality of sub boards and a plurality of battery monomers, the mainboard acquires the message quantity and recurrence rate corresponding to each sub board sent by each sub board in the same network in a certain time period so as to calculate a bus load rate of a CAN bus in the time period; the mainboard also obtains the temperature information and voltage information of the battery monomer corresponding to each sub board in the time period, the mainboard/sub board calculates the score of the each board according to the score parameters obtained by using a sorting algorithm according to a variance of an average temperature and a variance of an average voltage of the sub board in a certain time period so as to obtain the priority of the sub board; and the mainboard judges whether the bus load rate is in an expected range or not, and dynamically adjusts the frequency of sending messages by each sub board according to the priority of each sub board when the bus load rate exceeds the expected range. The battery management system can reduce the bus load rate according to the data weight, achieves the reliability and safety of message information transmission of each sub board, and further improves the performance of the electric automobile.

The invention discloses a nuclear power station electron card simulation and fault monitoring system and method. The nuclear power station electron card simulation and fault monitoring system comprises a front machine connected with a background terminal, a test signal source, a switch power supply, an acquisition control apparatus, a card adaptation apparatus connected with an electronic card to be detected, and a humiture control cabinet, wherein the front machine is respectively connected with the test signal source, the acqusiton control apparatus and the humiture control cabinet; the card adaptation apparatus is arranged in the humiture control cabinet; and the switch power supply is connected with the card adaption apparatus for supplying power to the card adaption apparatus. According to the invention, through simulating the humiture condition of an electronic card in a real work environment or under an extreme environment condition, the function stability of the electronic card can be monitored in real time, automatic and intelligent simulation testing of the electronic card can be realized, defects of the electronic card in the real work environment or an extreme environment can be discovered timely, and circuit fault risks of a nuclear power station are effectively reduced.

The invention discloses a code scanning system, a code scanning method and a plug-in. The system comprises a terminal and a server, and the terminal comprises a plug-in; the server is used for maintaining a code scanning rule and subscribing to the terminal; wherein the plug-in is used for dynamically loading a code scanning rule subscribed from the server and scanning the code in the terminal byusing the code scanning rule.

The invention discloses an intelligent distribution transformer integrated test and fault determination test handcart. The handcart comprises a housing, wheels and a handle, wherein the housing is an anti-high-magnetic-interference housing, the housing is internally provided with an integrated controller, an integrated wiring unit, an environment control detection unit and a safety control protection unit, the integrated controller is respectively connected with the environment control detection unit, the safety control protection unit and the integrated wiring unit and is connected with a central control PC, and each external-end wiring port of the integrated wiring unit is arranged at the side wall of the housing. The intelligent distribution transformer integrated test and fault determination test handcart realizes a modular design and greatly reduces the test time and the labor cost; and concentrated and simple equipment control is realized, a power equipment preventative test management system is designed, completed and configured, and unified data management and diagnosis analysis are also realized.

The invention discloses a transformer state online monitoring system and a transformer state online monitoring method based on OFDM carrier signals. The transformer state online monitoring system comprises a concentrator and a carrier communication module CCO thereof which are installed on a secondary side of a distribution transformer, and three-phase carrier communication equipment installed ona primary side of the distribution transformer after passing by means of a voltage transformer and a current transformer, wherein the three-phase carrier communication equipment comprises a primary side three-phase carrier communication module STA-P3H and a power supply module. The transformer state online monitoring system and the transformer state online monitoring method adopt the OFDM carriersignals to realize measurement, recording, tracking and comparison of on-line frequency characteristics of the primary side and the secondary side of the transformer, thus defects of the transformer can be found in time under the condition that the transformer does not need to be shut down, and fault early warning is provided.

The invention discloses intelligent cleaning equipment for an insulator of electrical equipment of a transformer substation, and the equipment comprises a monitoring feedback unit which is used for patrolling the surrounding environment of the insulator according to an obtained work instruction, and transmitting the image information of the surrounding environment of the insulator to a main body carrying platform; the climbing cleaning unit is used for acquiring the working instruction output by the control unit, climbing to the insulator to be cleaned and cleaning the insulator; and the main body carrying platform is used for outputting a working instruction, controlling the monitoring feedback unit to carry out patrol work, analyzing the image information transmitted by the monitoring feedback unit and determining the working instruction of the climbing cleaning unit. The system has the advantages that no personnel contact exists in the whole process, and epidemic risk is greatly reduced; the problems of lifting height and stability of a conventional lifting platform are effectively avoided, that is, the carrying platform only needs to complete positioning adjustment preparation work before the climbing sweeping unit is disengaged, the problems of the insulator height, the surrounding environment and the like do not need to be considered any more, and the application scene of the insulator sweeping device is greatly expanded.

The invention discloses a nuclear power station card burn test temperature and humidity monitoring system and method. The monitoring system includes a burn test cabinet, a front-end processor, a switch, a temperature and humidity monitoring device connected with the front-end processor through the switch, and a temperature and humidity adjustment device connected with the temperature and humidity monitoring device; the front-end processor, the switch, the temperature and humidity monitoring device connected and the temperature and humidity adjustment device are all arranged in the burn test cabinet; the front-end processor is used for receiving temperature and humidity distribution cases, analyzing the temperature and humidity distribution cases to obtain temperature and humidity control instructions, issuing the temperature and humidity control instructions, and feeding back and storing monitoring data; and the temperature and humidity monitoring device is used for receiving the temperature and humidity control instructions, monitoring the temperature and humidity in the burn test cabinet, and uploading temperature data and humidity data to the front-end processor, and controlling the startup and shutdown of the temperature and humidity adjustment device based on the temperature and humidity control instructions, the temperature data and the humidity data. With the nuclear power station card burn test temperature and humidity monitoring system and method of the invention adopted, environmental temperature and humidity can be maintained at a stable level in a long-time burn test process of cards.

The invention discloses a three-dimensional ultrasonic detection system for pipeline defect detection, the three-dimensional ultrasonic detection system comprises a detection end and a control end, the detection end comprises a moving plate, a plurality of supporting plates are fixedly connected to the bottom side wall of the moving plate, a rotating rod is rotatably connected to every two moving plates, moving wheels are fixedly connected to the two ends of each rotating rod, the bottom side wall of the moving plate is provided with a moving device, the side wall of the moving plate is fixedly connected with a camera, the upper side wall of the moving plate is provided with a detection device, and the upper side wall of the moving plate is fixedly connected with a first power supply module and a first wireless transceiver module. A worker only needs to operate the display module, the whole pipeline can be sequentially detected, the labor intensity is greatly reduced, the detection efficiency is high, meanwhile, the whole pipeline can be visually detected from the interior of the pipeline, and the detection result error is greatly reduced.

The invention discloses a multipurpose unmanned equipment control development system. The structure of the system comprises a remote controller which comprises a wireless network module, an alarm module and a positioning system. The positioning system is connected with a GPS positioning module. The alarm module is connected with a loudspeaker. The wireless network module is connected with a radiofrequency module which is connected with the sensor. The sensor is connected with monitoring equipment. The remote controller comprises a feedback module and an intelligent gateway. The feedback module comprises an analysis module and a processing module. The system has the advantages of being simple in structure, large in generalized range and high in practicality and can analyze or process different data and timely discover software defects or updates and fix the software defects or start the update program so that the development efficiency can be greatly enhanced and the error rate can bereduced, the use range of the control development system can be increased and the stability of the control development system can be enhanced.

The invention relates to a method for manufacturing a large curved-surface component of a turbine. The method sequentially comprises the following steps that a metal plate is cut according to a specific dimension, and a hydraulic press is selected according to the physical characteristics of the metal plate; and the metal plate is heated to the temperature of 400-1200 DEG C; and the metal plate is placed in a pressing die, and the pressure is kept being 5-20 MPa for two to ten minutes by means of the hydraulic press, so that the metal plate is pressed into the curved-surface component through the die. By the adoption of the method for manufacturing the large curved-surface component of the turbine, the manufacturing efficiency and quality of the large curved-surface component can be significantly improved, and the machining technique is greatly simplified.

The invention provides a lightning arrester resistive current online monitoring system and method. The system comprises a voltage acquisition terminal, a current acquisition terminal, an edge computing node, a monitoring system background and a remote client. The voltage acquisition terminal is designed to be installed on a high-voltage wire or a bus beside a lightning arrester to monitor an operating voltage at the two ends of the lightning arrester; the current acquisition terminal is designed to be installed on a lightning arrester grounding down lead to monitor the total current of the lightning arrester during operation; and the resistive current of the lightning arrester is calculated by the edge calculation node according to the collected voltage and current waveforms; A real-time,efficient, stable and reliable monitoring mode is provided for online monitoring of the resistive current of the lightning arrester of a transformer substation, the defects of the lightning arrester can be found in time, power equipment damage caused by failure of the lightning arrester is prevented, and the system and the method are crucial to safe operation of a power grid.