9results about How to "Long test time" patented technology

The utility model relates to the technical field of tunnel construction and underground space engineering construction, in particular to a TBM (Tunnel Boring Machine) hob performance test detection device based on linear rock breaking, which comprises a base, a frame is arranged on the base, and a rock breaking mechanism, a rock box mechanism, a rock breaking hob component and a rock box body are arranged in the frame. A load sensor is fixed between the tool support and the hydraulic oil cylinder, and a three-way force sensor is fixed between the tool support and the tool apron; a confining pressure sensor is arranged on the rock box body, a weighing device is arranged at the bottom end in the frame, and a photoelectric temperature integrated sensor is arranged on the weighing device. By monitoring various performance parameters such as hob load, temperature and abrasion in real time, analyzing hob diameter and weight changes, analyzing rock breaking effects of different hobs and researching a hob rock breaking mechanism, quantitative evaluation of performance differences of different hobs is achieved, reference is provided for manufacturers to manufacture and optimize hob performance, and the hob rock breaking performance evaluation device is suitable for large-scale popularization and application. And key guidance is provided for selection of tunnel project hobs and selection of construction parameters.

The utility model discloses a manhole cover pressure testing machine with a positioning device, which comprises a bottom plate, the lower side of the bottom plate is fixedly connected with a supporting plate, the upper side of the bottom plate is provided with a testing platform, the upper side of the bottom plate is fixedly connected with a fixing frame, the upper side of the fixing frame is fixedly connected with a hydraulic cylinder, and the upper side of the hydraulic cylinder is provided with a positioning device. A sliding groove is formed in the upper side of the bottom plate, sliding blocks are slidably connected to the inner sides of the left end and the right end of the sliding groove, positioning units are arranged on the upper sides of the sliding blocks on the left side and the right side, each positioning unit comprises a fixing box, and the fixing boxes are fixedly connected to the upper sides of the sliding blocks. By arranging the bottom plate, the sliding block, the fixing box, the rotating shaft, the rotating disc, the worm gear, the worm, the rotating disc, the connecting block, the limiting block and the positioning block, the well lid can be conveniently limited by the positioning block, the worn positioning block can be rapidly replaced in the test process, and the test time is prevented from being prolonged.

The invention discloses a ground test hydrogen-oxygen rocket engine mixing ratio control system which comprises a liquid hydrogen storage tank, a hydrogen cavitation pipe, a liquid oxygen storage tank, an oxygen cavitation pipe, a combustion device, a gas nozzle, a liquid hydrogen storage tank pressure control system and a liquid oxygen storage tank pressure control system. Wherein the liquid hydrogen storage tank is connected with the liquid hydrogen storage tank pressure control system through a pipeline; the liquid oxygen storage tank is connected with the liquid oxygen storage tank pressure control system through a pipeline; the liquid hydrogen storage tank is connected with an inlet of the hydrogen cavitation pipe through a pipeline, and an outlet of the hydrogen cavitation pipe is connected with a hydrogen inlet of the combustion device through a pipeline; the liquid oxygen storage box is connected with an inlet of the oxygen cavitation pipe through a pipeline, and an outlet of the oxygen cavitation pipe is connected with an oxygen inlet of the combustion device through a pipeline. An outlet of the combustion device is connected with an inlet of the gas nozzle through a pipeline, and an outlet of the gas nozzle directly discharges gas outwards. The purposes of controlling the mixing ratio and prolonging the test duration are achieved, meanwhile, the safety of the engine and the test device is guaranteed, and the test cost is reduced.

This invention relates to a method, apparatus, and system for optimizing the sensitivity, extinction ratio, and EMI of long-distance optical modules. The method mainly includes: detecting the output sensitivity of the optical module at different temperatures; compensating and adjusting the voff voltage based on the sensitivity shift at different temperatures; after compensating and adjusting the voff voltage, compensating and adjusting the bias current based on the optical power shift at different temperatures; detecting the output extinction ratio of the optical module at different temperatures; compensating and adjusting the Vmod voltage based on the extinction ratio shift at different temperatures; detecting the EMI of the optical module at different temperatures; if the EMI is unqualified, compensating and adjusting the Vmod voltage; if the EMI is still unqualified after multiple compensation and adjustments of the Vmod voltage, compensating and adjusting the RX amplitude voltage and RX pre-emphasis voltage to ensure that the sensitivity, extinction ratio, and EMI of the optical module are all qualified. This invention can optimize the sensitivity and extinction ratio of the optical module to the optimal value at various temperatures while ensuring EMI compliance.

The application relates to the technical field of elevators, in particular to an on-site access control cabinet test method, system, equipment and medium. The application simulates the main control board layout through a jig board, establishes a connection with a card reader, an electric lock and a door magnetic interface of the access control cabinet by using a probe array, first carries out low-voltage conductivity test, impedance test and voltage reference calibration to obtain preliminary results; after the pre-check passes, the control cabinet is connected with an actual elevator main board to carry out function verification and system joint debugging to obtain second-stage test results; then the system analyzes the test data, identifies abnormal interface positions and fault types, and accurately broadcasts fault information and terminal identification through a voice system; the layered test mechanism avoids the risk of main board damage, the multi-channel concurrent test improves the efficiency, the voice guidance realizes rapid positioning, the safety hidden danger in the traditional test is effectively solved, and the accuracy and the standardization level of the test are improved.

The invention relates to marker for health assessment, and application thereof, and belongs to the field of medical examination. Use of a reagent for identifyi Male marker in manufacture of a reagent for detecting a health status of a mammal, comprising: Female detecting the marker in a sample of a subject, wherein the marker is a level of 8-oxoGsn; (2) comparing the marker with a reference, wherein a difference of the marker compared to the reference is used to evaluate the health status of the subject. The present invention adopts a simple clinical physical examination method to conduct a comprehensive health status assessment on the subject, can timely and quickly grasp people's health status and health rules, can be used in the field of health service management for sub-health detection and early warning, disease treatment and effect observation, and detection of psychological and emotional state, and has significant advantages over conventional medical detection methods.

The utility model discloses a high-precision pyroelectric coefficient testing device which comprises an industrial personal computer, a temperature controller, a high-resistance meter, a test board, an electric heating piece, a temperature sensor and a silver paste electrode used for placing a pyroelectric material to be tested. According to the testing device, the tested pyroelectric material is heated by using a silver paste electrode heating method, so that the defects of environmental error caused by charge of insulating oil in an oil bath heating process, hydrothermal solution splashing and the like are avoided; the high-resistance meter capable of switching different measuring ranges according to the quantity of the measured electric charges is used for replacing an integrating capacitor and an electrometer to collect the pyroelectric charges, and the problems that the testing precision is reduced due to the fact that the integrating capacitor is too large, and the testing range is out of range due to the fact that the integrating capacitor is too small are solved.

The application discloses a test system and a test method of a rail transit signal system. The test system is used for testing a first rail transit signal system, and comprises a second rail transit signal system and a virtual trackside simulation device. The virtual trackside simulation device is used for simulating the state of a trackside device. In a first test mode, the first rail transit signal system sends a device operation instruction to the virtual trackside simulation device, receives a first simulated trackside device state fed back by the virtual trackside simulation device, and obtains train position information of a first train in a real line. In a second test mode, the first rail transit signal system runs in parallel with the second rail transit signal system based on a running plan of the second rail transit signal system, drives the virtual trackside simulation device to simulate the running of a real trackside device, obtains a second simulated trackside device state, and collects train running data of a second train and real state information of the real line.

The invention discloses polyester resin for a salt-spray-resistant powder coating and a preparation method of the polyester resin. The polyester resin comprises the following raw materials in percentage by mass: 25-45% of polyol; 40-65% of aromatic polybasic acid; 0.5 to 2.5 percent of a branching agent; 1.5 to 5% of polyamine; 5-15% of an acidolysis agent; 1.3-8% of a phosphorus-containing reagent; 0.1 to 1.4% of an esterification catalyst; 0.01-1% of a curing accelerator; and 0.1-2% of an antioxidant, wherein the sum of the mass percentages of the raw materials is 100%. The catalyst zinc and phosphate radical in the polyester resin form an insoluble complex precipitate with iron ions generated by electrochemical reaction of a substrate in an acid environment, so that the generation of the electrochemical reaction is remarkably inhibited, and the salt spray resistance of the powder coating is enhanced; an amido bond and a hydrogen-oxygen bond of a substrate form a strong hydrogen bond, and the amido bond and the hydrogen-oxygen bond synergistically improve the adhesive force of the coating and the substrate and are beneficial to further improvement of the salt spray resistance; the salt spray resistance of the powder coating is obviously improved.