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382 results about "Real-time testing" patented technology

Real-time testing is the process of testing real-time computer systems. Software testing is performed to detect and help correct bugs (errors) in computer software. Testing involves ensuring not only that the software is error-free but that it provides the required functionality to the user. Static and conventional methods of testing can detect bugs, but such techniques may not ensure correct results in real time software systems. Real-time software systems have strict timing constraints and have a deterministic behavior. These systems have to schedule their tasks such that the timing constraints imposed on them are met. Conventional static way of analysis is not adequate to deal with such timing constraints, hence additional real-time testing is important.

Real-time decoder for scan test patterns

A method and apparatus for improving the efficiency of scan testing of integrated circuits is described. This efficiency is achieved by reducing the amount of required test stimulus source data and by increasing the effective bandwidth of the scan-load operation. The reduced test data volume and corresponding test time are achieved by integrating a real-time test data decoder or logic network into each integrated circuit chip. The apparatus, servicing a plurality of internal scan chains wherein the number of said internal scan chains exceeds the number of primary inputs available for loading data into the scan chains, includes: a) logic network positioned between the primary inputs and the inputs of the scan chains, the logic network expanding input data words having a width corresponding to the number of the primary inputs, and converting the input data words into expanded output data words having a width that corresponds to the number of the internal scan chains; and b) coupled to the internal scan chains, registers loaded with bit values provided by the expanded output data words while data previously loaded into the scan chains shifts forward within the scan chains by one bit position at a time; wherein a first plurality of the input data words supplied to the primary inputs produce a second plurality of expanded data words that are loaded into the internal scan chains to achieve an improved test coverage.
Owner:GOOGLE LLC

Type of testing equipment for detecting the failure process of thermal barrier coating in a simulted working environment

A type of testing equipment for detecting the failure process of thermal barrier coating in a simulated working environment; it belongs to the field of simulated special working environment equipment. Testing equipment includes testing platform equipped with static or dynamic specimen holding apparatus, simulated module of working environment, real-time detection module, control panel. This invention is capable of simulating a high temperature, erosive, corrosive working environment for thermal barrier coated turbine blade of aero-engines; simulate high speed spinning working environment for thermal coated blade, simulate static working environment for guiding blade; perform real-time testing of temperature field, 3-D displacement field, crack initiation and expansion, surface oxidation, etc. This invention has achieved complete integration of high temperature, erosive, corrosive working environment for thermal barrier coating and complete integration static or dynamic working environment, complete integration of simulated working environment and real-time testing, thus providing a crucial testing platform and reference data to properly understand the failure mechanism of thermal barrier coated blade and to improve relevant designs; strong applicability.
Owner:XIANGTAN UNIV

On-line real-time simulation testing system of wind generating set controller

The invention provides an on-line real-time simulation testing system of a wind generating set controller. The on-line real-time testing system comprises the wind generating set controller, a real-time simulation interaction system and a wind generating set system simulation model. The wind generating set controller issues an action instruction to the real-time simulation interaction system. The real-time simulation interaction system converts the received action instruction and transmits the converted action instruction to the wind generation set system simulation model. The wind generating set system simulation model executes the action instruction transmitted by the real-time simulation interaction system, provides a feedback signal needed by the wind generating set controller and feeds the feedback signal back to the wind generating set controller through the real-time simulation interaction system. A communication mode and a hard-wired mode are compatible, and an application platform is provided for kinds of real-time hardware on-line simulation of the wind generating set. The simulation testing system can be used for testing and evaluating operation and protection characteristics of the wind generating set in a laboratory environment, which facilitates rapid experimental verification of a novel control algorithm and a performance improvement scheme.
Owner:STATE GRID CORP OF CHINA +2

Novel shale gas content tester and shale gas content detecting method

InactiveCN103063545ASolve problems where measurements have a direct impactAvoid test errorMaterial analysisDesorptionTester device
The invention relates to a novel shale gas content tester and a shale gas content detecting method. The novel shale gas content tester comprises a device, a real-time testing system, a system and a computer collecting and processing system, wherein the device is used for desorbing a sample at a constant temperature; the real-time testing system is used for testing pressure and temperature of the sample in the desorbing process; the system is used for detecting the volume of a sample desorbing space; through a pipeline, the device for desorbing the sample at the constant temperature is connected with the real-time testing system for testing the pressure and the temperature of the sample in the desorbing process; through a pipeline, the real-time testing system for testing the pressure and the temperature of the sample in the desorbing process is connected with the system for detecting the volume of the sample desorbing space; and the real-time testing system for testing the pressure and the temperature of the sample in the desorbing process and the system for detecting the volume of the sample desorbing space are connected with the computer collecting and processing system through data wires. According to the invention, the sample is placed in the constant temperature desorbing and detecting system to detect desorption, the problem that the measurement of desorbed gas is affected because the gas of a free space can be changed with temperature and pressure conditions of a testing environment is solved.
Owner:HENGTAISHANGHE ENERGY TECH BEIJING

Method and apparatus for testing request -response service using live connection traffic

The present invention provides for a method and apparatus for comparison of network systems using live traffic in real-time. The inventive technique presents real-world workload in real-time with no external impact (i.e. no impact on the system under test), and it enables comparison against a production system for correctness verification. A preferred embodiment of the invention is a testing tool for the pseudo-live testing of CDN content staging servers, According to the invention, traffic between clients and the live production CDN servers is monitored by a simulator device, which then replicates this workload onto a system under test (SUT). The simulator detects divergences between the outputs from the SUT and live production servers, allowing detection of erroneous behavior. To the extent possible, the SUT is completely isolated from the outside world so that errors or crashes by this system do not affect either the CDN customers or the end users. Thus, the SUT does not interact with end users (i.e., their web browsers). Consequently, the simulator serves as a proxy for the clients. By basing its behavior off the packet stream sent between client and the live production system, the simulator can simulate most of the oddities of real-world client behavior, including malformed packets, timeouts, dropped traffic and reset connections, among others.
Owner:AKAMAI TECH INC
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