46results about How to "The measurements are true" patented technology

The invention relates to the technical field of reliability test of a disc-type tool magazine and automatic tool-changing system for a machining center and specifically relates to a disc-type tool magazine and automatic tool-changing system comprehensive performance detection platform. The detection platform comprises a detection system, a test system and a control system. The detection system is used for finishing detection and collection of various parameters of the disc-type tool magazine and automatic tool-changing system; the test system is used for testing the reliability of the same-kind multi-dimension disc-type tool magazine and automatic tool-changing systems; and the control system is used for finishing setting of related test parameters in the test process and carrying out processing and analysis on the collected parameters, graphical display and test result display, and realizing comprehensive control of the detection system and the test system. The comprehensive performance detection platform is a test platform capable of loading the same-kind multi-dimension disc-type tool magazine and automatic tool-changing systems; and especially, the platform can carry out detection on the state and performance of the disc-type tool magazine and automatic tool-changing system and give corresponding analysis results.

The invention relates to a comprehensive property testing system for a stepping motor. The testing system is composed of a servo motor (101), a motor mounting bracket (102), a first coupling unit (103), a, torque sensor (104), a second coupling unit (105), a switching shaft (106), a to-be-tested motor mounting bracket (107), an adapting flange (108), a first sliding block (109), a second sliding block (110), a third sliding block (111), a guide rail (112), a mounting flange (201), a motor bracket (202), a connecting shaft (203), an input coupling unit (204), a load torque sensor (205), an output coupling unit (206), a hysteresis brake (207), a hysteresis mounting bracket (208), a hysteresis sliding block (209), a torque sensor sliding block (210), a motor sliding block (211), a slide rail (212) and a controller. According to the invention, the testing precision of the system is high; and characteristics testing requirements of positioning/maintaining torques and loads having different precisions, levels, and ranges can be met by selecting torque sensors with different torque ranges and different precision and resolution ratios and servo motors.

The invention discloses a coupled external mounted steel stay rope force detection device and a method. The device comprises an excitation assembly and a winding displacement coupling sensor, wherein the excitation assembly comprises a magnetic core, an excitation coil with a capacitive discharge circuit is sheathed on the magnetic core, a first magnetic pole and a second magnetic pole are arranged at two ends of the magnetic core and are respectively provided with a first press plate and a second press plate, the first magnetic pole and the first press plate are detachably connected, the second magnetic pole and the second press plate are detachably connected, a first clamp hole is arranged at a connecting part of the first magnetic pole and the first press plate, a second clamp hole is arranged at a connecting part of the second magnetic pole and the second press plate, and round lining pads are arranged on the inner walls of the first clamping hole and the second clamping hole. The method comprises the following steps that the device is used for detection, and in addition, magnetic feature curves of a steel stay rope to be detected are obtained; the device is used for detection, in addition, a group of standard magnetic feature curves are obtained; and the magnetic feature curves of the steel stay rope to be detected are compared with the group of standard magnetic feature curves to obtain the tension in the steel stay rope to be detected.

The invention relates to a harmonic gear reducer starting torque and friction resistance torque testing system. The harmonic gear reducer starting torque and friction resistance torque testing system includes a loading driving module, a torque and rotation angle measurement module, a control and data processing module and a testing bench. In a starting torque test, the control and data processing module performs starting torque testing according to a rotation angle test mode or a rotation speed test mode, and finds the maximum value of a loaded torque according to torque values in a testing process, and adopts the maximum value of the loaded torque as the starting torque of a test point of a tested harmonic gear reducer (11). In a friction resistance torque test, the control and data processing module performs friction resistance torque testing according to a friction resistance torque test mode, and acquires the minimum value, maximum value and average value of a friction resistance torque in a testing process according to acquired torque values, rotation angle values and time in the testing process. With the harmonic gear reducer starting torque and friction resistance torque testing system of the invention adopted, problems in accurate, fast and automated measurement of starting torques and friction resistance torques of harmonic gear reducers can be solved, and measurement accuracy can be improved.

The invention discloses a vapor-liquid two-phase flow simulating system for a tube shell type vapor generator. The system comprises an open loop wind path system and a closed loop water path system. The open loop wind path system comprises a variable frequency fan, a flowmeter, an electric heating box, an evaporator in a simulating device and tail gas treatment equipment, and the variable frequency fan, the flowmeter, the electric heating box, the evaporator and the tail gas treatment equipment are connected in sequence through heat exchange pipes. According to the closed loop water path system, a closed loop is formed by sequentially connecting a high-temperature circulator, a condenser in the simulating device, a thermocouple and a cooling device through a circulating water pipe in the water flow direction. The invention further discloses a method for simulating tube shell type vapor generator vapor-liquid two-phase flow through the vapor-liquid two-phase flow simulating system for the tube shell type vapor generator. The vapor-liquid two-phase flow simulating system and simulating method for the tube shell type vapor generator provide convenience for studying the vapor-liquid two-phase flow mechanism of the tube shell type vapor generator.

The invention discloses a commercial vehicle dynamic slope test system and a commercial vehicle dynamic slope test method. The commercial vehicle dynamic slope test system comprises a gyroscope, an atmospheric pressure sensor, a CAN network, an acceleration sensor, an angular acceleration sensor and a processing unit, wherein the processing unit comprises a real-time slope value calculation module, an average slope calculation module and a data fitting module; the gyroscope is electrically connected with the real-time slope value calculation module, the atmospheric pressure sensor is electrically connected with the average slope calculation module, the CAN network is electrically connected with the average slope calculation module, the real-time slope value calculation module, the average slope calculation module, the acceleration sensor and the angular acceleration sensor are respectively connected with the input end of the data fitting module, and the output end of the data fitting module is connected with the CAN network. The processing unit is used for carrying out fitting on the acquired data, and the real-time slope value with high precision, quick response and low nose can be acquired by utilizing a filter method of hardware and software.

The invention discloses a tire rolling resistance coefficient measuring and testing device which comprises a flat road surface template to be in contact with a test tire, a workbench used for settingthe road surface template, and a tire loading device, wherein a surface of the road surface template is provided with an adhesion layer which is consistent with an actual road surface in terms of material; the road surface template is used for setting the road surface model, and the workbench is connected to a template driving device for driving the workbench to move via a tension and pressure sensor; the tire loading device for setting the test tire and applying predetermined positive pressure thereto to press the test tire tightly against the road surface model. A surface of the tire rollingresistance coefficient measuring and testing device is provided with the adhesion layer which is consistent with an actual road surface in terms of material, an actual rolling resistance coefficientof the tire on an actual road surface can be measured, and realistic and reliable measurement results can be obtained. Further, the tension and pressure sensor is cheaper than a conventional sensor for a wheel axle; the testing device is simple in structure and low in requirements for working environment and structural precision and therefore is low in cost.

The invention discloses a measuring method for bonding force between a polymeric substrate and a metal coating .The measuring method comprises the steps that on the basis of the prior art, a mask plate with a central through hole is adopted and horizontally placed on the polymeric substrate, and the upper surface of the mask plate is uniformly smeared with a layer of strong bonding glue; the metal coating is deposited on the strong bonding glue, and then when a tensile force testing device exerts tensile force, only interface separation between the portion, under the through hole, of the metal coating and a polymer can be generated at an interface due to the fact that the thickness of the mask plate is larger than that of the metal coating .According to the method, the technical problem that in the prior art, the detected bonding force value between the metal coating and the polymer is actually the resultant force of the true bonding force value between the metal coating and the polymer and the consumption value that the edge of the metal coating is fractured to generate cohesive force is skillfully solved .The measuring result is true and accurate and has the universality.

The invention belongs to the technical field of optical measurement, and in particular relates to a near backscattered light measurement system resistant to stray light interference. The measuring system includes a sampling device and a measuring device. The sampling device includes a spherical vacuum target chamber and an imaging lens. A target and a diffuse reflection plate with a targeting laser channel are disposed in the spherical vacuum target chamber. The diffuse reflection plate is attached to the inner wall of the spherical vacuum target chamber. The sphere wall of the spherical vacuum target chamber is provided with a measuring window. Near backscattered light produced by a targeting laser incident target is scattered in the opposite direction of the targeting and then is subjected to diffuse reflection through the diffuse reflection plate, and diffuse reflection light penetrates the measuring window and then enters the measuring device through the imaging lens. The imaging lens images the diffuse reflection plate on a one-time image plane, the plane where the one-time image plane is located is provided with an isolation screen, and the isolation screen is provided with aplurality of light holes. According to the near backscattered light measurement system, by arrangement of the isolation screen, the possibility that stray light scattered by the inner wall of the target chamber enters a diagnostic light path is eliminated, and the stray light shielding effect is achieved.

The invention discloses a soil culture device and a soil culture and gas collection method based on the same. The soil culture device comprises a culture cavity and a cover body; the upper end of the culture cavity is open, and the lower end of the culture cavity is sealed; a supporting separation plate is arranged in the culture cavity; a plurality of through holes are formed in the supporting separation plate; an air inlet is formed in the lower portion of the culture cavity; the air inlet is communicated with an air blower air outlet outside the culture cavity; an air outlet is formed in the upper portion of the culture cavity; and the air inlet and the air outlet are respectively provided with valves. The soil culture device further comprises a gas collection structure; the gas collection structure is arranged on the cover body; the gas collection structure comprises a carrier gas inlet, a carrier gas outlet, a greenhouse gas inlet and a greenhouse gas outlet; and after the cover body covers the culture cavity, the carrier gas inlet and the greenhouse gas inlet of the gas collection structure are both located in the culture cavity, and the carrier gas inlet and the greenhouse gas outlet are located outside the culture cavity. With the above structure adopted, measuring results are more accurate, and meanwhile, collected greenhouse gas is closer to a true value.

The invention discloses an intelligent multi-curved surface detecting system and method of a railway vehicle. The system comprises: a measuring module for detecting a height value of a point to be measured on a bottom surface of a carriage; a wireless receiving module for transmitting received data to an industrial personal computer; and the industrial personal computer for remotely controlling and measuring the measuring module. The intelligent multi-curved surface detecting system disclosed by the invention achieves high-precision detection of planeness of the bottom surface of the carriagein a manufacturing process of the railway vehicle, and the stability of a reference plane is improved; and by means of a PSD detection with precision higher than 1mm, the accuracy of measurement datais improved.

The invention discloses a movable cigarette paper tube heating device which comprises a base (1), a steering assembly (2) and a lifting assembly (3). The steering assembly (2) comprises a steering roller (21) and a steering driving motor (22) for driving the steering roller (21) to rotate, a plurality of cigarette holders (25) are arranged on the steering roller (21), and cigarettes are fixed at one ends of the cigarette holders (25). The lifting assembly (3) comprises a lifting plate (31) and a lifting driving motor (22) for driving the lifting plate to move up and down, a heating rod (33) isfixed on the lifting plate (31), and the heating rod (33) is driven by the lifting plate (31) to move up and down in a cigarette paper tube. According to the invention, the cigarette paper tube is independently heated, and the performance of cigarette paper tube components during combustion is inspected, so that the cigarette paper tube components are improved in a more targeted manner. Furthermore, the process in which a heating source moves from the end away from the filter tip to the end close to the filter tip in the cigarette smoking process is truly simulated, and the measurement resultis real and accurate.

A pulseless electrical activity (PEA) detection method comprises the steps of: detecting a heart electrical activity signal, detecting a common carotid artery blood flow signal, and judging PEA based on the heart electrical activity signal and the common carotid artery blood flow signal. Meanwhile, common carotid artery blood flow parameters and electrocardiosignals serve as factors for comprehensively evaluating the PEA; the electrocardiosignals and blood flow signals associated with the electrocardiosignals in time can be analyzed in real time; the accuracy of PEA judgment based on the basis is high; time delay is small; besides, an ultrasonic Doppler blood flow detection module is used for testing the real condition of blood flow; hand touch type or induction type pulse measurement is replaced; the measurement result is real; and PEA judgment can be more effectively assisted.

The invention discloses a method for controlling unbalance of an APU rotor assembly. The APU rotor assembly adopts a single-key tooth bearing shaft. The control method comprises a step of independently balancing the bearing shaft, specifically, the bearing shaft is subjected to weight reduction and placed on two supporting points of a balancing machine, the two supporting points are close to two ends of the bearing shaft respectively for supporting, the gravity center of the bearing shaft is made to be located between the two supporting points, and then the static unbalance amount of the bearing shaft is measured and adjusted through the balancing machine in a double-point supporting and middle ring belt rotating mode. The method for measuring the unbalance amount of the single-key gear shaft is advantaged in that measurement of the unbalance amount of the single-key gear shaft becomes possible from impossibility, so the bearing shaft is independently balanced before the overall balance of the rotor assembly, the overall balance quality of the APU rotor assembly is ensured by limiting the unbalance amount of the bearing shaft, and the smooth operation of the overall balance is ensured.

The invention belongs to the technical field of unconventional natural gas development experiments, and discloses a supercritical carbon dioxide fracturing and permeability testing integrated experimental device. The device comprises a gas source system, an in-situ environment simulation system and a pulse testing system; the in-situ environment simulation system is used for providing an experimental environment for simulating the real formation temperature and stress state for a rock core test piece; the gas source system is used for providing a test gas source for the in-situ environment simulation system and providing a gas source for the fractured rock core test piece; the pulse testing system is used for carrying out pulse test on the rock core test piece to obtain the permeability. With the device and method adopted, a supercritical carbon dioxide directional fracturing shale experiment under a simulated formation condition can be realized, the (axial and radial) permeability of a rock core before and after fracturing can be tested in situ. The device and method have the advantages of intelligence, convenience in operation and the like compared with a traditional experiment method and experiment equipment. The in-situ environment simulation system simulates the field working condition more vividly, so that a measurement result is more real and accurate.