30results about How to "Test method science" patented technology

The invention discloses a back-to-back double-lens optical axis consistency test fixture and test method. The test fixture comprises a fixture stage and graph cards; the graph cards and two lenses are arranged on the fixture stage; the graph cards are located at the object sides of the two lenses; each of the graph cards is provided with a rotary variable mark graph; the mark graph includes a center point mark and four end point marks; connecting lines between the non-adjacent end point marks of the mark graph are perpendicular to and equally divided by each other, and the center point mark of the mark graph is overlapped with perpendicular equal-division points; the lens surfaces of the two lenses are parallel with the graph card surfaces of the corresponding graph cards; connecting lines between the center point marks of the graph cards and the centers of the two lenses are perpendicular to the lens surfaces of the two lenses; the tested two lenses include a first lens and a second lens which are arranged in a back-to-back manner; the first lens and the second lens are arranged in a camera; and the camera is provided with a USB interface for communicating with a PC. With the back-to-back double-lens optical axis consistency test fixture and test method provided by the technical schemes of the invention adopted, the problem of judging the consistency of optical axes can be judged. The accuracy of test results of the test fixture and test method is highly.

The invention discloses a testing method for safe performance of a power climbing rope, comprising a structure and quality test, a rope leather sliding test, a static force elongation ratio test and a dynamic performance test. The dynamic performance test comprises power elongation ratio, first falling impact force and falling times. Because the testing method is standard and scientific, and the testing data are correct and reliable, the security and the reliability of the power climbing rope are improved.

The invention belongs to the technical field of water environment chemical analysis, and particularly relates to a local coulomb method for measuring biochemically degradable organic matters in a water body. According to the method, uniquely a fastest voltage reduction point is selected as a cut-off point for collecting a voltage; the cut-off point is easy to find, and the measurement time can begreatly shortened, so that the operation efficiency is improved; by means of the local coulomb method of the cut-off point selection method, the linear correlation between the value of oxygen consumption BOMQ1 in a measurement result and the concentration of a GGA standard solution for culture of electricigens is better, the more scientific, reasonable and accurate test method is provided for measuring the biochemically degradable organic matters in the water body by utilizing a microbial fuel cell, and new idea and direction are provided for scientific control of water environment pollution;and the method has great popularization values and wide application prospects.

The invention provides a comprehensive performance tester for a falling safety protection system. The tester includes a bottom plate and a top plate, and four stand columns are fixedly connected between the bottom plate and the top plate; a first installation platform and a second installation platform which are fixedly connected with the four stand columns are sequentially arranged below the topplate, the bottom of the end, extending out of the four stand columns, of the first installation platform is fixedly connected with an impact sensor, a first hanging ring of the impact sensor is connected with a first buffer bag, the first buffer bag is connected with a first safety rope, and the first safety rope is connected with a safety belt worn on a first test dummy; and a tension sensor isfixedly connected to the middle of the bottom of the second installation platform, a second hanging ring of the tension sensor is connected with a second buffer bag, the second buffer bag is connectedwith a second safety rope, the second safety rope is connected with a safety belt worn on a second test dummy, and the second test dummy is connected with an oil cylinder through a third safety rope.The tester is convenient to operate, high in test efficiency, accurate and reliable in test data and capable of testing the static performance of the falling safety protection system.

The invention relates to the research field of animal limb movement function and footprint analysis, and discloses a test device for analyzing the animal limb movement function and the footprint. The test device comprises tracks and soft ceramic layers applied on the bottom plates of the tracks, wherein the tracks consist of a straight flat segment, a turning segment, an upslope segment, a downslope segment and an upper step or lower step segment; lateral plates are arranged on both sides of the tracks; the lateral plates and the bottom plates are detachable; and particularly, the lateral plates can be made of one-way transparent glass to facilitate observation or photographing.

The invention discloses a device for dynamically testing fabric quality. The device comprises a frame, clamps are arranged on two sidewalls of the frame, two brackets are arranged between two sidewalls of the frame, and the top of each bracket is rotatably connected with a cam; the lower part of the cam is rotatably connected with the bracket through a wheel shaft, one end of the wheel shaft extends to outside of the bracket and bonded with a transmission wheel; a motor is arranged on the frame between two brackets, a driving wheel is bonded on the output shaft of the motor, and the driving wheel is in transmission connection with two transmission wheels through transmission belts; the motor drives two cams to synchronously swing by controlling the forward rotation and reverse rotation through a cam swing control device. By simulating the use on the fabric by the hip, the elbows and the knees when the human body wears the fabric, the fabric performance and the sewing quality conditionof the fabric and the sewed fabric under the tension, the torsion, the friction and like coupling dynamics effects are synchronously detected. The invention further discloses a method for dynamicallytesting the fabric quality by adopting the device.

The invention relates to a belt wheel rotation manual control device. The device consists of a forward button 1, a forward contactor 2, a reverse button 3, a reverse contactor 4, a stop button 5, a current transformer 6, an ammeter 7, a control panel 8, and a signal control cable 9, wherein the forward contactor 2 and the reverse contactor 4 are used for controlling the forward and reverse rotation of a motor, and manual rotation of a belt wheel is replaced.; the current transformer 6 is used for detecting a current value of the motor; and the ammeter 7 is used for displaying the current value of the motor. The belt wheel rotation manual control device has main advantages that a test method is scientific and accurate; and manual rotation of the belt wheel is replaced, so that the failure eliminating time is reduced.

The invention provides a sand prevention screen tube hydraulic test apparatus. The apparatus is used for testing the outer pressure resistance of a sand prevention screen tube, and the sand prevention screen tube hydraulic test apparatus comprises: a test cylinder having a closed cavity for accommodating the sand prevention screen tube; a bearing assembly comprising an elastic sealing sleeve surrounding the side direction of the sand prevention screen tube, and screen tube plugs sealing two ends of the sand prevention screen tube; and a strain test assembly comprising a strain sensor arranged on the inner side surface of the sand prevention screen tube. The sand prevention screen tube hydraulic test apparatus allows the uniform radial force to be applied to the whole sand prevention screen tube and a test method to be highly scientific; and a hydraulic value obtained in the invention is the practical outer pressure resistance of the screen tube, and does not need conversion. The sand prevention screen tube hydraulic test apparatus has the advantages of simple, scientific and reasonable structure, and effective measurement of the outer pressure resistance of the sand prevention screen tube.