166 results about "Base line" patented technology

The invention discloses a cable branch box multi-mode cooperative control system and method, and relates to the technical field of power equipment intelligent control, and the method comprises the following steps: injecting a low-amplitude synchronous detection pulse in an operation environment of a cable branch box, collecting a feedback response signal of the detection pulse, inverting an arrival sequence of an interference signal according to the feedback response signal, and carrying out the inversion of the arrival sequence of the interference signal; and constructing a micro time slot interference portrait, and generating a time sequence baseline for an interference identification reference. According to the method, the time sequence base line is established through micro time slot detection, and accurate identification of microsecond interference signals is realized in combination with phase consistency analysis, multi-channel sampling and a cross-cycle evolution model. The false triggering probability is reduced by adopting a phase-locked suppression and delay cache mechanism, and the safe release of peak energy is realized through a phase turn-back amplitude limiting and energy guiding mode, so that the stability and the anti-interference capability of the cable branch box in a complex electromagnetic environment are remarkably improved.

The invention discloses a power transmission line small sample abnormal data generation method and system based on a diffusion model and feature migration, and belongs to the technical field of abnormal detection. The problem that stable and high-fidelity abnormal data can be generated only when the demand quantity of abnormal samples is much larger than that of actually obtained abnormal samples is solved. The method comprises the steps that an abnormal defect library and an equipment main body library are constructed based on defect reference images in a data set and corresponding labels, and the data set at least comprises one defect reference image of each type; training an abnormal defect identification baseline model based on the data set and verifying to obtain a low-quality image; comparing the abnormal defect library and the equipment main body library with low-quality images by using an image comparison technology to obtain an abnormal defect reference image and a base image to be generated; generating a to-be-migrated region mask based on the to-be-generated base map; and based on the to-be-generated base map and the to-be-migrated region mask, using a diffusion model to migrate the abnormal region features of the low-quality image to the to-be-generated base map for anomaly generation. The method is used for generating the small sample abnormal data of the power transmission line.

The invention relates to a segmentation, block and carrying stage construction method for a ship draft sign, which comprises the following steps of: manufacturing a segment where the bottom of a middle water gauge sign is located, and drawing and mounting the bottom of the middle water gauge sign; a block where the top of the middle water gauge and the freeboard mark are located is manufactured, and the top of the middle water gauge mark and the freeboard mark are worked out and installed; manufacturing a section where the bottom of the head water gauge mark is located, and performing drawing and mounting on the bottom of the head water gauge mark; a block where the head water gauge mark is located is manufactured, and the top of the head water gauge mark is worked out and installed; building a dock and slipway three-dimensional measurement and control network, and carrying out rapid and refined large-closure carrying work of each subsection and block; according to the base line of the segmented block where the middle water gauge mark and the freeboard mark are located, the whole ship body base line is determined, and finally water gauge mark positioning scribing is conducted on the tail area according to the whole ship body base line. According to the method, the draft water gauge mark and the freeboard mark are marked and installed in the segment or block stage, the production procedure is effectively moved forwards, cross construction of the segments and the blocks in the large closure carrying stage is reduced, the later production construction difficulty is lowered, and the overall integrity is improved.

The invention provides a data exception early warning method and device based on a dynamic threshold model. The method comprises the following steps: firstly, constructing an index time sequence library and an event library for storing index and event information; fusing the historical same-period base line, the trend term and the event influence value and generating a base line through a dynamic weight formula; calculating upper and lower limits of a dynamic threshold by combining the fluctuation acceleration and a basic fluctuation coefficient; and finally, comparing the real-time index value with a threshold range to judge whether to give an alarm, and optimizing the model or updating the event library according to a manual labeling result. According to the method, dynamic and accurate early warning of data exception can be realized, service scene changes can be adapted, the early warning accuracy is continuously improved through feedback optimization, and powerful support is provided for stable service operation and efficient exception disposal.

The invention discloses a phase interferometer DOA and polarization parameter joint estimation method based on multiple linearly polarized antennas, and belongs to the technical field of radar signal processing. According to the method, the problems of low ambiguity resolution probability and low signal DOA and polarization parameter estimation precision of an existing method are solved. Noise variance and signal power estimation is carried out by adopting a method of receiving data covariance matrix high-order power, and the complexity is reduced. Aiming at the problem that the defuzzification probability is limited due to polarization mismatch, the method firstly adopts a method of solving a short base line by a long base line to reduce a phase difference error, then utilizes a multi-base-line phase weighted defuzzification method, and utilizes phase differences and amplitude information of all base lines to perform polarization domain phase difference and spatial domain phase difference decoupling, so that the defuzzification probability is limited. And the power estimation error is reduced through the LMMSE method, and the precision of signal DOA and signal polarization parameter estimation is improved. The method can be applied to joint estimation of DOA and polarization parameters of the phase interferometer.

The invention relates to a towed towed buoy array positioning device and method. The towed towed buoy array positioning device comprises a towed mother ship, and a deck unit is fixedly installed on the towed mother ship; the system further comprises a plurality of dragging buoys which are connected in series through ropes and form a dragging buoy array, the dragging buoy located at the foremost end is connected with the dragging mother ship through the rope, and the whole dragging buoy array is dragged by the dragging mother ship on the water surface to sail. The dragging buoy located at the tail end is arranged in a transverse offset mode, complex installation and calibration are not needed before use, and laying and recycling are convenient; the acoustic measurement sensor is always kept far away from a mother ship and is less interfered by ship body noise, so that the acoustic positioning calculation precision is greatly improved; according to the device, accurate positioning of deep towing is achieved based on the spatial distance intersection positioning principle, the base line of the acoustic measurement sensor array is long, the accuracy advantage of long base line positioning is achieved, no positioning tracking ship is arranged in the method, and compared with a double-ship positioning method, the manpower and material resource cost is reduced through the method.

The invention relates to the field of electric pole production, and particularly discloses a production process and system for a composite electric pole, and the production process comprises the following steps: A, positioning an inner layer part on an output shaft of a first movable transmission box, enabling the first movable transmission box to axially move along the inner layer part, and driving the inner layer part to rotate at the same time; b, axial wiring: arranging a base line layer on the surface of the inner layer part along the axis direction of the inner layer part by a wiring ring until the base line layer is arranged to a set thickness; c, circumferential wiring is carried out, then a center line layer is arranged in the circumferential direction of the inner layer piece through the same wiring ring, and the center line layer is arranged on the base line layer in a pressed mode till the center line layer is arranged to reach the set thickness; and D, the outer layer is wound on the outer side of the middle line layer, the outer layer is wound in a spiral track in a lap joint mode till the outer layer is wound to the set thickness, and the needed electric pole is formed. The composite material electric pole processed and manufactured through the method is high in strength and long in service life.

The invention discloses a fault identification method and system of an intelligent electric meter, and belongs to the field of fault identification of the intelligent electric meter, and the method comprises the following steps: collecting the electric parameter data of a historical electric meter and the power consumption parameter of each electric device, and obtaining the standby power consumption parameter of the electric device; setting standby power consumption base lines in different time periods including working days and rest days, and triggering early warning when the deviation between the real-time power consumption and the base lines exceeds a preset threshold value; performing fault prediction according to the triggered early warning to obtain a specific fault; obtaining an abnormal reason of an abnormal point in the historical electricity meter electric parameter data, carrying out correlation analysis on the historical abnormal point and a predicted fault, obtaining the abnormal reason of the abnormal point with the highest correlation, and taking the abnormal reason as a fault reason after verification and outputting the abnormal reason; according to the invention, through obtaining the ammeter data, the power consumption of each device and the standby power consumption, the personalized baseline is established in combination with different time periods, time and seasons, the abnormality of the ammeter is accurately identified, and fault misjudgment caused by high standby power of the device is effectively avoided.

The invention discloses an underwater collaborative navigation positioning method based on inertia / ultra-short baseline alternative navigation. The method comprises the following steps: firstly, establishing a navigator motion model; a navigator carries out calculation navigation by using INS, and when the navigator does not receive a prior topographic map, INS / DVL integrated navigation is carried out by using Kalman filtering. When a navigator receives a prior topographic map, INS / DVL / TAN integrated navigation is carried out by using Kalman filtering. And then establishing a follower collaborative navigation model. Then, the navigator carries out distance measurement and angle measurement on the follower through the ultra-short base line, position information, slant distance information and azimuth angle information of the follower are sent to the follower at fixed time intervals, and the follower carries out tight combination based on Kalman filtering through the information; and finally, when the USBL carries out distance measurement and angle measurement, the single navigator carries out tight combination positioning on the follower. When the USBL only carries out distance measurement, simultaneous navigation is set to be alternate navigation, namely, the navigator 1 broadcasts own position and distance information at the moment, and the navigator 2 broadcasts own position and distance information at the next moment.

The utility model discloses a binocular vision assembly with adjustable base line spacing, comprising a track, the track is provided with an upward protruding guide rail and sliding grooves located at two sides of the guide rail, the track is slidably provided with two supports, the supports are in sliding fit with the guide rail, and the guide rail is provided with a base line. An adjusting piece used for adjusting the sliding state of the support is arranged in the sliding groove. One side face of the track is provided with baseline scales used for measuring the distance, and the support is provided with an identification baseline. Binocular cameras with consistent image acquisition directions are mounted on the brackets; the distance adjustment is carried out under the same reference condition, and the accuracy of distance adjustment is met.

The invention discloses a database detection operation method of biological feedback equipment, and relates to the technical field of database detection operation, according to the database detection operation method, in combination with a change data capture CDC technology and a Kafka Streams streaming processing framework, myoelectricity reaction data are collected and cleaned in real time, redundant processing operation of full-amount data is effectively reduced, an incremental calculation algorithm is introduced to process dynamic data, and therefore the dynamic data processing efficiency is improved. The dynamic change of data can be quickly adapted by updating the average value and the standard deviation of the detection base line; meanwhile, a priority grouping mechanism is introduced, high-priority data with large deviation are sorted according to the abnormal amplitude from large to small, and the high-priority data are immediately transmitted to a visualization module for emphasized processing; low-priority data with small deviation is processed in a batch mode according to a detection sequence, and resource allocation and response speed are optimized; and high-priority data generates an exclusive thermodynamic diagram and a tendency diagram through an independent process, and low-priority data is integrated into a grouped thermodynamic diagram and a statistical distribution diagram, so that the intuition and practicability of data interpretation are remarkably improved.

The invention discloses a method and a device for extracting baseline atmospheric delay between base stations by combining BD2 and BD3, and the method comprises the steps: respectively determining three-frequency wide-lane ambiguity fixed solutions of BD2 and BD3, carrying out the constraint of a wide-lane ionosphere extracted based on a pseudo-range non-geometric combination, building a dual-frequency wide-lane observation equation sharing frequency points B1I and B3I, determining a BDS dual-frequency wide-lane ambiguity fixed solution, and carrying out the calculation of the BDS dual-frequency wide-lane ambiguity fixed solution. And unifying the three-frequency wide-lane ambiguity fixed solutions of the BD2 and the BD3 to a reference star of the BDS combined system to obtain a BDS wide-lane ambiguity final solution, establishing a double-frequency ionosphere-free observation equation sharing frequency points B1I and B3I, determining original ambiguity fixed solutions respectively corresponding to the frequency points B1I and B3I, and determining the original ambiguity fixed solutions of the frequency points B1I and B3I. According to the method, the double-difference troposphere wet delay and the double-difference ionosphere delay of the base line AB between the base stations are extracted in combination with the virtual frequency point technology, the respective three-frequency signals and advantages of the BD2 and the BD3 are fully used, the integrity of the correction number generated by the network RTK based on the base line atmospheric delay is ensured, the service range and the service capability of the network RTK are improved, and the overall service quality of the network RTK is improved.

The invention discloses a method for controlling the manufacturing precision of a super-long T-shaped cross beam of a steel truss girder, which comprises the following steps of: formulating a partitioning scheme, dividing a large cross beam into a plurality of sections of small cross beams, controlling the length of a single small cross beam not to exceed 9m, and arranging a butt-joint groove at the joint position of a web plate and a flange plate of each small cross beam; modeling and lofting are carried out, a web plate and a flange plate are sequentially taken out, a process adding amount is set on the bolt hole side of the small cross beam, and meanwhile the width adding amount of a U-rib notch is set; assembling a small cross beam web plate and a flange plate by taking the base line as a reference, and determining an assembling precision control target; and designing an overall assembly scheme of the large cross beam, optimizing a structure welding sequence, formulating pre-arching process parameters, and finally realizing a precision control target. The method is not influenced by the length rolling capacity of the steel plate, can adapt to machining precision control of the orthogonal special-shaped plate in the steel structure bridge, has universality, is generally used in various steel structure machining factories, is high in precision after being manufactured, reduces a large amount of repair work, and can obviously improve the construction efficiency.

The embodiment of the invention discloses an interface risk mining method and device, a storage medium and a terminal. Determining a trusted response parameter baseline corresponding to the target interface based on the historical traffic behavior log of the target interface; when an access operation for the target interface is monitored, obtaining a current response parameter returned after the target interface responds to the access operation; and verifying the current response parameter according to the credible response parameter baseline, and determining the risk state of the target interface according to the verification result. The credible response parameter base line of the target interface is determined according to the historical flow behavior log of the interface, so that the response parameter output information conforming to the expectation under the normal condition of the interface can be reflected; if the target interface has a new access operation, the output parameter of the access operation can be verified according to the credible response parameter baseline, so that whether the access belongs to normal access or not is verified, and the potential attack risk faced by the output interface can be effectively mined according to the verification result.

The invention relates to the technical field of robot driving and control, in particular to a robot driving and control integrated system, which comprises a healthy fingerprint base line establishing module for acquiring current and voltage original waveform data of a motor under standard action by using an analog-to-digital converter in a new machine debugging stage of a robot, performing segmented interception on a data stream by adopting a sliding Hanning window function, and establishing a healthy fingerprint base line; and performing orthogonal transformation on each data window by applying a complex primary function, and converting a time domain signal into frequency component superposition. According to the invention, by collecting and analyzing high-frequency current and voltage waveform data in the motor, an electrical fingerprint capable of reflecting a mechanical health state is established, and a driving control system is endowed with a non-intrusive self-sensing capability. According to the method, tiny degradation of the mechanical transmission system can be identified on line, such as early-stage pitting corrosion of a bearing or poor lubrication of a gear, a maintenance mode is converted into beforehand prediction from post-remedy, and the operation reliability of equipment and the overall production efficiency are improved.

The invention provides a satellite test system, method and device, communication equipment and a storage medium, and relates to the technical field of satellite communication. The method comprises the following steps: based on a conduction integrated signal, obtaining a pseudo-range observed quantity between a target satellite and a conduction integrated signal receiver; on the basis of the pseudo-range observed quantity and the GNSS signal, obtaining on-satellite launching time delay of the target satellite; and testing the target satellite based on the on-satellite launching time delay. Therefore, the GNSS signal receiver and the conduction integrated signal receiver are arranged side by side according to a zero base line and are homologous in clock, so that time synchronization can be realized between the two receivers, the ground time-frequency reference can be unified, the influence of ground clock drift in the test process is eliminated, and the accuracy of satellite test is improved. Besides, on-satellite launching time delay can be considered, the target satellite is tested, the influence of time-frequency deviation between a communication system and a navigation system on satellite testing is greatly eliminated, and the accuracy of satellite testing is further improved.

The invention relates to the technical field of interferometer direction finding, and discloses an interferometer direction finding method and system, and the method comprises the steps: calculating the phase difference of a longest baseline in an antenna array through a virtual baseline method, and solving the phase difference of the longest baseline to obtain sin [alpha] corresponding to an incident angle [alpha] of an electromagnetic wave signal; calculating the actual phase difference of each real base line in the antenna array through a staggered base line method, and then solving according to the actual phase difference of each real base line to obtain a sin beta array corresponding to the incident angle beta of the electromagnetic wave signal; and subtracting the sin alpha from all the sin beta elements in the sin beta array to obtain an error array, finding a minimum error through an index, and solving according to the sin beta element corresponding to the minimum error to obtain an incident angle beta of the electromagnetic wave signal. The direction finding sensitivity and precision are high, the speed is high, and the method is suitable for a close-range direction finding scene with a high precision requirement.

The invention discloses a circular array interferometer ambiguity resolution method based on adaptive angle clustering, and the method comprises the steps: firstly constructing a two-dimensional uniform circular array interferometer model, and calculating the position of each antenna array element; secondly, two units are randomly selected from the uniform circular array to form base lines, the fuzzy phase difference and the maximum fuzzy number of each base line are calculated, two base lines are randomly selected to form double-base-line combinations, each double-base-line combination is traversed, the azimuth angle and the pitch angle are calculated, and an angle matrix is formed; then, a neighborhood radius parameter of a DBSCAN clustering algorithm is set according to the input frequency, clustering analysis is carried out on the angle matrix, and a cluster with the maximum density is selected; and finally, calculating the average value of the data in the maximum density cluster to obtain the azimuth angle and the pitch angle of the target. According to the method, the correct ambiguity resolution probability and the direction finding precision of the two-dimensional circular array interferometer can be effectively improved.

The application discloses a manufacturing method of a large-section thin-wall special-shaped steel shell tower segment, which comprises the following steps: first, dividing the segment into several blocks, then manufacturing block components, setting a horizontal base line, a vertical base line and block assembly position lines on an assembly platform, and fixing supporting columns and inclined positioning supports; positioning and fixing outer wall plate units of an inclined straight wall block through the positioning supports; hoisting and fixing outer wall plate units of the remaining straight wall blocks and adjusting the perpendicularity of the outer wall plate units through the supporting columns; hoisting and fixing inner wall plate units corresponding to all the outer wall plate units and adjusting and fixing the inner wall plate units through adjusting struts, and then welding connecting angle steels between the inner wall plate units and the outer wall plate units; hoisting and fixing outer wall plate units and inner wall plate units of the remaining vertical curved wall blocks in sequence through the same method, and welding connecting angle steels between the inner wall plate units and the outer wall plate units; finally, welding blocks to form the segment. The steel shell tower segment is divided into blocks which are easy to assemble, the manufacturing process is simplified, and the production efficiency is improved.

The invention provides a display device and an electronic device. The display device includes: a base layer; pixels, each including a sub-pixel; a demultiplexer; a drive circuit portion; a data line connecting the demultiplexer to the sub-pixel; a data base line connecting the demultiplexer to the driving circuit portion and including a first data base line and a second data base line; a data connection line connected to the data base line and including a first data connection line having a 1-1 data connection line and a 1-2 data connection line and a second data connection line having a 2-1 data connection line and a 2-2 data connection line; a bridge layer including a first bridge layer connected to the (1-1) th data connection line and the (1-2) th data connection line, and a second bridge layer connected to the (2-1) th data connection line and the (2-2) th data connection line; and an intermediate bridge pattern layer connecting the first data base line to the first bridge layer, overlapping the second bridge layer, and having a width greater than a width of the first data base line.

The invention relates to a satellite-borne radar antenna baseline real-time six-degree-of-freedom measurement device and a measurement method. The satellite-borne radar antenna baseline real-time six-degree-of-freedom measurement device comprises a distance measurement assembly, a rotation angle measurement assembly and a displacement measurement assembly, one side of a satellite is provided with an extension arm capable of extending or retracting, one side of one end, away from the satellite, of the extension arm is provided with an extension antenna, and the distance measurement assembly is installed on one side of the satellite and the extension antenna. The displacement measuring assembly is arranged on one side of the satellite and on the extending antenna and used for measuring the rotation angle of the extending antenna surrounding the satellite and the rotation angle of the extending antenna rotating around the satellite, and the displacement measuring assembly is arranged on one side of the satellite and on the extending antenna and used for measuring the displacement change of the extending antenna in the antenna base line direction. The angle of rotation of the extension antenna around the axis of the extension arm is measured. The device has the advantages of being reasonable in structural design, and capable of measuring the position and the rotation angle of the extending antenna relative to the fixed antenna in real time, and further correcting a radar baseline in real time to ensure the on-orbit working performance of the radar.

The invention relates to the technical field of network interconnection, in particular to a router isolation management method for supporting a multi-tenant virtual network, which comprises the following steps of: collecting real-time flow data of each tenant network, comparing the flow data with a performance baseline set by each tenant to obtain a flow anomaly index, and according to the flow anomaly index, determining whether the performance baseline is abnormal or not; and identifying a fault area in the network through an algorithm, and generating fault positioning information. According to the method, the network traffic data of each tenant is collected and analyzed in real time, and the difference between the network traffic data and the established performance base line is compared, so that traffic anomaly detection is realized. Through real-time monitoring and data comparison, a flow mode deviating from a normal range can be rapidly identified, and a fault area in a network can be automatically identified through an algorithm. Besides, the applicability of different recovery strategies is analyzed by applying a decision tree technology, the recovery strategy suitable for the current network condition can be selected from multiple options, and the recovery strategy is automatically applied to router configuration.

The utility model discloses an anti-deformation high-strength solid wood board core which comprises a solid wood board core body, a broken grain unit is arranged on the surface of the solid wood board core body, the broken grain unit comprises more than two broken grain lines, and all the broken grain lines in the broken grain unit are parallel and are respectively located on different straight lines in a staggered mode. Projections of any two broken grain lines in the broken grain units on the base line A are not completely overlapped, and a line L formed by connecting the projections of all the broken grain lines in the broken grain units on the base line A penetrates through the whole solid wood board core body. According to the anti-deformation high-strength solid wood board core, due to the effect of the broken grain lines of the broken grain units, generated deformation is greatly degraded, and the anti-deformation capacity of the solid wood board core body is enhanced. In addition, the broken grain lines are dispersed, the influence of the broken grain units which are not concentrated on the structure of the solid wood board core body is small, and the structural strength of the solid wood board core body is high.

The present application relates to the field of communication radar, in particular to a kind of omnidirectional correlation interferometer real-time direction finding method and system based on spread spectrum signal;Construct omnidirectional antenna array;Utilize radio frequency channel time-sharing switching and receive the array signal of single array plane currently working, obtain baseband signal;A set of fixed base line is distributed to the uniform circular array in the array plane currently working;Based on the pseudo-random code matching the spread spectrum signal generated locally and received, each way of baseband signal is carried out correlation despreading, and the phase difference corresponding to each base line is obtained;The phase difference obtained is input into the phase difference sample library established in advance to carry out matching, calculates similarity function, and the angle stored in the phase difference sample library corresponding to the maximum value of similarity function is determined as the measurement direction angle;The measurement direction angle is carried out data processing, and the optimized measurement direction angle is obtained;The method of the present application has the advantages of full-space coverage, low cost, direction finding precision and tracking precision.

The invention relates to the technical field of communication network security, in particular to a micro-anomaly detection and early risk early warning system for a communication behavior chain, which comprises a communication event acquisition unit used for acquiring discrete API (Application Program Interface) call events from a communication interface, the API call events comprising user identity, time, network address, request type and response state information, and meanwhile, the collected API calling event is transmitted to the behavior chain construction unit. API calling events are analyzed and cleaned in real time through the communication event acquisition unit, and the behavior chain construction unit is combined to aggregate the events in a dynamic time window by taking a user identity as a core to form an exclusive behavior chain, so that a black production is prevented from avoiding detection by replacing an IP (Internet Protocol); the base line learning unit learns historical behavior features by adopting a time sequence model such as LSTM and incrementally updates a normal behavior base line to adapt to user behavior changes, and the micro-anomaly detection unit accurately recognizes tiny deviation through comparison of a multi-dimensional feature vector and a normal feature space and reduces false alarms.

The invention discloses a light and small unmanned aerial vehicle multi-view VR video acquisition and synthesis method, and relates to the technical field of video acquisition and processing, and the method comprises the following steps: obtaining a unified time baseline, building an overlapping boundary time sequence index, locking a zero phase anchor point, and outputting a millisecond-level boundary event sequence; under the constraint of a boundary event sequence, obtaining boundary occlusion priori, constructing a dynamic visibility probability field and marking a potential occlusion kernel; and under the support of a dynamic visibility probability field, acquiring a cross-view delay gradient, applying constraint to a potential occlusion nuclear region, injecting phase traction test to a boundary event sequence, and finishing multi-camera clock fine tuning based on a feedback result. According to the method, the unified time base line and the dynamic visibility probability field are constructed, multi-camera synchronous acquisition and shielding area tracking are realized, a seamless splicing track is generated in combination with clock fine tuning and geometric constraint, black frame skipping is eliminated through luminosity consistency mapping and phase conjugate frame injection, and picture continuity and immersion experience stability are guaranteed.

The invention provides a product data multi-dimensional full-period management method, system and device and a medium, and relates to the technical field of product data management, and the method comprises the steps: constructing a preset module; receiving project configuration information input by a user, calling and executing a corresponding clipping rule from a preset module based on the project configuration information, and dynamically generating a project baseline; on the basis of the project base line, constructing an incidence relation graph between the deliverables, and on the basis of the incidence relation graph and the dynamic Bayesian network, establishing a change influence probability propagation model between the deliverables; when it is monitored that the target deliverable is changed, based on a change influence probability propagation model, quantitative influence values of the change source deliverable on the associated deliverable in quality, progress and cost dimensions are calculated, and a change influence analysis report is generated; and outputting visual results of the project base line, the incidence relation graph and the change influence analysis report. Product data management is realized or assisted through an automatic system, and the management efficiency and effect of the product data are improved.

1. The name of the design product: base line section bar (composite-1). 2. The use of the design product: building decoration material. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: front view.

The utility model relates to novel straddle type monorail three-section track changing equipment which can meet the requirement for efficient track changing of multi-turnout vehicles in a station yard and save space and comprises a bottom plate, a track and a locking device, the track is located on the bottom plate, a walking trolley is located on the track, and a plurality of turnout beams are located on the walking trolley. One end of the turnout beam is provided with a piled beam and a slewing device, the other end of the turnout beam is provided with a plurality of piled beams, a slewing crank arm mechanism is arranged at the bottom of the turnout beam, rollers on the slewing crank arm mechanism do linear motion in a fixed bottom plate and a guide groove in a track, and the slewing crank arm mechanism is driven by a driving device. The method has the advantages that the problem that the vehicle base space is limited is solved, and the requirement for small-space vehicle base route planning is met; signal receiving and safety feedback requirements are met, and the characteristics of linkage interlocking, flexible action, safety, reliability and the like are achieved; narrow space of a parking lot is fully utilized, the structure is compact, and functions are complete; and fourthly, the part design has good manufacturing manufacturability, and the manufacturing cost is favorably controlled.

The invention discloses a test method, a test platform, equipment, a storage medium and a vehicle. The method comprises the following steps: under the condition that a domain controller is located at a first base line, controlling the domain controller to carry out total upgrade from the first base line to a second base line to obtain a first target version; controlling the domain controller to degrade from the second baseline to the first baseline under the condition that the first target version is the same as the second baseline; the control domain controller performs differential upgrading from the first base line to the second base line to obtain a second target version; under the condition that the second target version is the same as the second base line, the control domain controller carries out same-version self-upgrading corresponding to the second base line to obtain a third target version; and under the condition that the third target version is the same as the second base line, controlling the domain controller to degrade from the second base line to the first base line, and returning to execute the above steps until the number of times of testing reaches a preset number of times. According to the test method provided by the embodiment of the invention, the reliability of the test result can be improved.