15 results about "Test timing" patented technology

The application discloses a kind of tangential frost heaving force test methods of cold region pile foundation, belong to cold region pile foundation frost heaving prevention and control technical field, the test method of the application is in the top of test pile Design load is applied and is kept, and in the time point when freezing depth and frost heaving reach maximum, obtain annual maximum unit tangential frost heaving force, by the determination of dangerous section, obtain the maximum tangential frost heaving force that pile body bears, namely the most unfavorable load state that pile foundation faces in a year, can be directly used as the key design control value of pile foundation security guarantee, fundamentally avoid the problem of data randomness and insufficient representation caused by improper test timing, so that key design parameter originates from real annual most unfavorable working condition, provide more scientific and reliable basis for subsequent frost heaving prevention and control and stability checking.

The invention discloses a cold region pile foundation tangential frost heaving force testing method, and belongs to the technical field of cold region pile foundation frost heaving prevention and control. According to the testing method, a design load is applied to the top of a test pile and kept, the annual maximum unit tangential frost heaving force is obtained at the time point when the frost depth and frost heaving reach the maximum, and the maximum unit tangential frost heaving force is obtained by determining a dangerous section; the maximum tangential frost heaving force borne by the pile body, namely the most unfavorable load state faced by the pile foundation in one year, can be directly used as a key design control value for guaranteeing the safety of the pile foundation. The problem of insufficient data randomness and representativeness caused by improper test opportunities is fundamentally avoided, key design parameters are derived from real annual worst working conditions, and a more scientific and reliable basis is provided for follow-up freezing pulling prevention and control and stability checking calculation.

The application relates to a test control method and device, computer equipment and a computer readable storage medium. The method comprises the following steps: receiving a first test timing sent by a host; acquiring a station state flag, which comprises a sending flag or a pause flag; if the station state flag comprises the sending flag, sending the first test timing to a test board card, so that the test board card sends an excitation signal to a device under test according to the received first test timing, and tests the device under test; and if the station state flag comprises the pause flag, pausing the sending of the first test timing to the test board card until the station state flag changes from the pause flag to the sending flag. The method can improve data processing efficiency.

The application relates to the field of integrated circuit design and test technology, and discloses a scan chain port layout optimization method, device and electronic equipment. The core of the method comprises the following steps: an intelligent nearest matching step of a scan chain port and a scan chain, in which a nearest unassigned scan chain is searched as a candidate by sequentially selecting a scan chain port, and it is judged whether the scan chain is matched according to a preset distance constraint threshold, so that a first matching relationship is established; and a step of performing dynamic port rearrangement on the unassigned ports and scan chains that are not successfully matched to generate a second matching relationship. Through a two-stage adaptive matching mechanism, physical perception optimization of the scan chain connection relationship is realized, wiring congestion and interconnection delay are significantly reduced, and the robustness of the design process and the convergence of the test timing are improved.

The application provides a multifunctional test point allocation method and system based on an adaptive switch matrix, relates to the technical field of electronic testing, and realizes dynamic connection of physical probes and logical test points by acquiring integrated circuit topology information to construct a switch matrix; the same probe is allocated to different test points in different time periods by using time division multiplexing technology, test response signals are collected and deviation values are calculated; a fault point is determined based on the deviation, the influence degree of the fault point on surrounding nodes is analyzed, and a test priority level is obtained; the test timing is dynamically adjusted according to the priority level, high-priority nodes are preferentially tested, the switch state is controlled to realize intelligent allocation of test resources, and the test efficiency and fault coverage are improved.

The invention relates to the technical field of integrated circuit design and testing, and discloses a scan chain port layout optimization method and device and electronic equipment. The method comprises the following steps: sequentially selecting scan chain ports, searching an unallocated scan chain with the shortest physical distance as a candidate, and judging whether the unallocated scan chain is matched or not according to a preset distance constraint threshold value, so as to establish a first matching relationship; and executing dynamic port rearrangement on the ports which are not successfully matched and the scan chain to generate a second matching relationship. Through a two-stage adaptive matching mechanism, physical perception optimization of a scan chain connection relationship is realized, wiring congestion and interconnection delay are significantly reduced, and robustness of a design process and convergence of a test time sequence are improved.

The application discloses a kind of test vector automation generation methods, which generates test vector based on test case, comprising: S1, writing test case, writing test case in simulation platform, the full coverage simulation verification of function and performance to chip circuit, confirm chip timing correct, provide basis for the script of link vector generation;S2, simulation timing check, write automation vector generation script, test clock cycle, test timing, the input state of all pins, input excitation, output state and expected output value are defined in the script;S3, link script, link test case in automation vector generation script, run simulation in simulation platform, automatically generate the test vector of specified format when simulation ends, the test vector reflects the input and output state of pin with clock cycle change in simulation process;S4, conversion or optimization is carried out to test vector, forms different test platform special vector format, and test vector is debugged and verified in test system.

The invention provides a multifunctional test point distribution method and system based on a self-adaptive switch matrix, and relates to the technical field of electronic testing, and the method comprises the steps: building a switch matrix through obtaining the topological information of an integrated circuit, and achieving the dynamic connection of a physical probe and a logic test point; distributing the same probe to different test points in different time periods by using a time division multiplexing technology, collecting test response signals and calculating a deviation value; determining a fault point based on the deviation, analyzing the influence degree of the fault point on surrounding nodes, and obtaining a test priority level; the test time sequence is dynamically adjusted according to the priority level, high-priority nodes are preferentially tested, the on-off state is controlled to achieve intelligent distribution of test resources, and the test efficiency and the fault coverage rate are improved.

The application relates to an engine timing system wear verification bench test method, which replaces the original timing system in an engine with a test timing system to form a test engine; obtains a test speed interval and a test load working condition; obtains a test cumulative running number of the test speed interval in vehicle road spectrum data of the original engine; performs a bench test of the test engine; after the bench test is completed, the wear risk of the test timing system is analyzed and evaluated. The application greatly improves test verification efficiency.

The invention discloses a network fault simulation method and device, equipment and a storage medium. In the scheme, a network fault simulation configuration file is obtained, and the file predefines a mapping relation between a trigger file used for triggering execution of a fault scene and a network fault scene and a network operation sequence corresponding to each scene. And monitoring a preset monitoring path, and when it is monitored that the trigger file matched with the mapping relationship is created, determining a corresponding network fault scene. And calling a corresponding network operation sequence from the configuration file based on the scene and executing the network operation sequence. According to the technical scheme, the file system event is used as a drive, accurate linkage of network fault simulation and the service state is achieved, and the accuracy and the automation level of the test opportunity are improved. The mapping relation and the operation sequence are defined through the configuration file, a complex scene can be flexibly defined without modifying codes, the construction and maintenance cost is reduced, and therefore the automation level of network testing and the scene construction efficiency are improved.

A method of performing a system authentication action associated with an exposure apparatus or a component of the exposure apparatus is disclosed. The method includes obtaining test timing data and reference timing test data related to one or more test timing parameters, each test timing parameter describing a corresponding system action duration, each system action duration describes a duration of a corresponding system action of the exposure apparatus or a component of the exposure apparatus; and identifying the exposure apparatus or a component of the exposure apparatus according to one or more quality performance parameters based on a comparison of the test timing data to the reference timing test data.

The invention provides a variable rigorous coefficient method for verifying storage reliability of a composite material structure. The variable rigorous coefficient method comprises the following steps: step 1, estimating parameters of a performance degradation model of the composite material structure; step 2, equivalent load mapping and variable rigorous coefficient construction under the condition of variable storage period; and step 3, a reliability index verification method considering the variable obturation coefficient. Aiming at the problem that the storage reliability of the composite material structure is difficult to accurately verify, verification test data under different moments and different load conditions are analyzed, the utilization efficiency of various test data is remarkably improved, and the dependence of a traditional obturation method on the test time sequence and the strict consistency of the load conditions is avoided. The method is suitable for verifying the long-term storage reliability index of the composite material structure complying with various degradation laws, is wide in application range, and has theoretical innovation and engineering practicability. The method is simple in calculation, low in operation difficulty and convenient for engineering application.

This invention discloses a liquid cooling testing method, apparatus, equipment, storage medium, and product. The method includes: in response to receiving a preset off-season verification trigger command, obtaining the remaining power capacity of an energy storage power station; wherein the energy storage power station includes multiple liquid cooling systems corresponding to each battery cluster; determining the number and timing of tests for the liquid cooling systems to be tested in the energy storage power station for off-season verification based on the remaining power capacity and the rated power required for each liquid cooling system in the energy storage power station to perform off-season verification; and controlling the temperature collected by the shielded temperature sensor of each liquid cooling system to be tested based on the test timing, and performing off-season verification based on a preset virtual temperature. This invention provides an efficient test planning for the liquid cooling systems corresponding to each individual battery cluster in a large-scale energy storage liquid cooling system, ensuring that the off-season verification process is safe and reasonable.

The invention discloses an MIL environment test method for a vehicle control unit, and the method comprises the steps: building an integrated model of a VCU and an MIL environment through simulink, and enabling all signals of the VCU to be directly connected into the MIL environment for correlation; performing one-to-one correspondence on the test case modules according to division of labor of the VCU function modules, defining a test time sequence for each module, and sequencing according to the test time sequence; performing automatic process compilation on the test case of each function module, and performing automatic test case serial number definition on each test case to form a test link; and automatically testing the test link, performing result feedback according to the module serial number, the use case serial number and the abnormal use case serial number, and generating a test report for output. According to the invention, the secondary matching workload of the MIL environment can be reduced, and the working efficiency of the MIL environment test is improved.

The present application relates to a kind of multi-target cooperative test method, device, electronic equipment and storage medium;Method includes: the heterogeneous test case uploaded by user is analyzed;According to the analysis content, the standardization target entity behavior instruction sequence with uniform structure corresponding to the test case is generated;Based on current communication link state, by adaptive selection adaptation channel, the behavior instruction in the target entity behavior instruction sequence is respectively issued to each target entity under current test scene according to test timing logic and is executed;The test working state of the target entity in real time monitoring test process, when the target entity fails, execute fault handling process.This scheme significantly improves the vehicle-road cloud automation test efficiency and reliability in multi-target concurrent scene.