51results about How to "Understand performance" patented technology

The invention relates to a traction pin loading device for a strength test of a car body. The traction pin loading device includes a base, a support base, a loading mechanism and a control unit, wherein the base is fixed on the ground, the support base is fixed on the base, and the tested car body is placed on the support base; the loading mechanism includes a transverse loading mechanism body, a longitudinal loading mechanism body and a perpendicular loading mechanism body, wherein the transverse loading mechanism body, the longitudinal loading mechanism body and the perpendicular loading mechanism body exert load on a traction pin in the transverse direction, in the longitudinal direction and in the perpendicular direction respectively and are connected with the control unit. The traction pin loading device is simple in overall structure and capable of performing a loading test on the traction pin in the three directions, satisfying the requirements of the traction pin strength test of a motor train unit and a metro and guaranteeing the accuracy and reliability of test data. In this way, the performance of the car body can be known better, and a better guarantee is supplied to the quality improvement of a vehicle.

The invention provides a method for measuring key parameters of VOC (Volatile Organic Compounds) emission in an in-vehicle non-metallic material, which is characterized by: deriving a balance emissionmodel of VOC in the non-metallic material at an environment cabin closed stage and a mass transfer diffusion model of the VOC in the non-metallic material at a direct current emission stage based ona mass transfer emission rule, a mass conservation law and a Henry's law, and measuring key parameters of an emission process of the in-vehicle non-metallic material in combination with actually measured data, wherein the key parameters comprise an initial emittable concentration C0, a distribution coefficient K, and a diffusion coefficient Dm. According to a device and the method for measuring the key parameters of the VOC emission in the in-vehicle non-metallic material, on the basis of a mass transfer diffusion rule and the mass conservation law of the VOC in the non-metallic material underdifferent conditions, the balance emission model of the VOC in the non-metallic material under the condition of closed environment cabin and the mass transfer diffusion model of the VOC in the non-metallic material under the condition of direct current emission are established, in combination with the actually measured data, the key parameters of the emission process of the in-vehicle non-metallic material are measured at the same time, wherein the key parameters comprise the initial emittable concentration C0, the diffusion coefficient Dm and the distribution coefficient K, thereby achieveing the goal of establishing a VOC prediction model of the in-vehicle non-metallic material.

The invention relates to a measuring method of X-ray diffraction peak height ratio and discloses a fixed point measuring method of X-ray diffraction peak height ratio, including the following steps: (1) a powder sample is tableted and measured on an X-ray diffractometer so as to determine that the peak height ratio of which peaks needs to be calculated to represent material characteristic according to the phase composition of the sample; (2) the counting interval for calculating peak height ratio by the fixed point measuring method is optimized; (3) the diffraction peak height ratio result of the sample is obtained by common continuous scanning method; (4) the diffraction peak height ratio result of the sample is obtained through fixed point measuring method; (5) the measured results of the step (3) and the step (4) are compared; (6) sample preparation is completed once again and the diffraction peak height ratio result of the newly prepared sample is measured through fixed point measuring method. The invention greatly increases accuracy and repeatability of X-ray diffraction peak height ratio measurement, thereby people can know better about material characteristic; moreover, the invention provides more accurate basis for presuming cycle life and electricity storage of cell.

The invention discloses a display stand for an iron phosphate battery, comprising a box body, a motor is fixedly connected to the right side of the bottom of the inner wall of the box, and a driving wheel is fixedly connected to the output end of the motor, and a drive wheel is fixedly connected to the bottom of the inner wall of the box. The center is fixedly connected with a bearing seat, the top of the bearing seat is movably connected with a rotating shaft, the surface of the rotating shaft is provided with a driven wheel, and the driven wheel is connected to the driving wheel through a belt, and the top of the rotating shaft Extends to the outside of the enclosure. The present invention solves the problem that the existing iron phosphate battery display rack cannot rotate by setting the rotating shaft, the through hole, the driving wheel, the belt, the motor, the bearing seat and the driven wheel. The utility model has the advantage of good rotation effect, facilitates users to understand the performance of the iron phosphate battery more comprehensively, increases the sales quantity of the iron phosphate battery, has a simple structure, and is worth popularizing.

The invention provides a unit and a method for reader information statistics of a radio frequency recognition system. The unit comprises a starting module, a databank module, a file storing module and a timer module, wherein the starting module is an initialization module for starting reader information statistics; the databank module is used for completing checking, establishment and delete of tag information; the file storage module is used for establishing an information statistics control file and a reader information file; the timer module is used for deleting expiry databank memories at regular time. The method comprises the following steps: starting reader information statistics, carrying out the reader information statistics, and releasing the memory through the timer module. Through the adoption of the method, tag information can be acquired under the condition that no client is available, and moreover the statistics is only executed once, so that the data information can be conveniently compared with that of the client, and the system fault can be positioned; through the adoption of the method, the reader information can be continuously counted under the condition that the external environment is not stable, for example, the power is cut off, the fault can be conveniently positioned, and the equipment property can be mastered; moreover, the method is applicable to multiple application situations.

The invention discloses a detection method and device for failure probability of an illuminating system. The detection method for failure probability of the illuminating system comprises the following steps of: acquiring the failure probability of multiple subsystems in the illuminating system in the first time quantum; determining the failure probability of the illuminating system in the first time quantum according to the failure probability of the subsystems in the first time quantum; determining the failure probability of the subsystems in the illuminating system in the second time quantum according to the failure probability of the subsystems in the illuminating system in the first time quantum; determining the failure probability of the illuminating system in the second time quantum according to the failure probability of the subsystems in the second time quantum; and determining the failure probability of the illuminating system according to the failure probability of the illuminating system in the first time quantum and the failure probability of the illuminating system in the second time quantum. According to the detection method and device for the failure probability of the illuminating system, the performance of the illuminating system can be more accurately known.

The invention provides automatic water draining device test equipment based on gas extraction. The automatic water draining device test equipment comprises a water storage box, a supporting frame, a negative pressure source, a negative pressure water tank, an electric ball valve and a total controller; the supporting frame is arranged in the water storage box, and the negative pressure source andthe negative pressure water tank are connected; the negative pressure water tank is arranged at the top end of the water storage box, and a water inlet and a water outlet are formed in the negative pressure water tank; the water inlet communicates with the inner bottom end of the water storage box through a pipeline, and the electric ball valve is arranged at the water inlet of the negative pressure water tank; the total controller is electrically connected with the negative pressure source and the electric ball valve, and an automatic water draining device is placed in the water storage box;and a water feeding pipe and a negative pressure balancing pipe of the automatic water draining device both communicate with the water outlet of the negative pressure water tank. The interior of the negative pressure water tank is a negative pressure environment to simulate a gas extraction environment, the automatic water draining device is placed in the simulating environment and conducts continuous water draining and storage under different conditions, reliability of the automatic water draining device is tested, and the testing problem of the reliability of the automatic water draining device is solved.

The invention relates to a computer system, in particular to a registration code management system and a method for managing the registration code management system. The registration code management system and a corresponding data base are arranged in a server of a company; the server is connected with a browser through a B / S structure; the registration code management system comprises a registration module, a manager module and a registration machine module, wherein the registration module comprises basic information registered by a user and registration code information generated every time, the manager module comprises establishment, editing, inquiring and backup of the information of the user and the registration code information, and the registration machine module is use for generating registration codes. The registration and management of the registration codes in a normalized, routing and instrumental mode is changed into the application of an informationized technology, and the amount of registration information of users can be flexibly adjusted according to different users. Now that the company masters core data of users, the situations that the performance of a salesman is learned and the right of the salesman is limited can be reflected timely through the registration code management system.

The invention provides a test unit for improving WAT test precision and a test method thereof, and the test unit for improving WAT test precision comprises an MOS transistor region which comprises N MOS transistors with the same feature size; the metal region is positioned above the MOS transistor region; and the interconnection metal wire is used for connecting the MOS transistors with the metal region, so that the N MOS transistors are connected in parallel. Under the condition that existing testing hardware is not changed, the problem that precision is insufficient when a testing machine and a needle card test the leakage current of the MOS transistor can be effectively solved, so that the leakage current of the MOS transistor can be accurately and efficiently tested; the testing process is convenient and simple, the testing cost can be reduced, and application and popularization of the method are facilitated; according to the invention, a small-size MOS transistor is tested, so that the performance of the MOS transistor can be known, and a solution is provided in subsequent chip design, so that chip integration is facilitated.

The invention discloses an Internet platform, which is characterized by comprising a consumer module, a commodity service party module, a commodity module and a commodity certification document module. The consumer module includes information related to the consumer; the commodity service side module comprises information related to the commodity service side; the commodity module comprises information related to the commodity; the merchandise certification document module contains information about the merchandise certification document used to certify the conformity of the merchandise. The patent also discloses a shopping system including the Internet platform, the commodity server terminal and the consumer terminal.

The invention discloses a packaging container pump head detection device with an electrostatic dust collection function. The device comprises a device shell; two electrostatic dust collection devicesare symmetrically arranged at the left end and the right end of the device shell; four flow guiding devices are symmetrically arranged in the device shell; two fixing clamping plates are symmetricallyarranged on the front sides and the rear sides of the four flow guiding devices in the device shell; and a collecting box is arranged in the device shell and located in front of the four flow guidingdevices. According to the packaging container pump head detection device with the electrostatic dust collection function, a storage box is arranged in the device shell, so that a storage space can beconveniently provided for liquid for detecting a pump-out amount; the flow guide devices are adopted, a pump head needing to be detected can be conveniently connected with the liquid in the storage box; the fixing clamping plates are adopted, and therefore, the flow guide devices can be fixed conveniently, and meanwhile the flow guide devices can be replaced conveniently; and the collecting box and a weighing device are adopted, the pump-out amount can be conveniently counted.