119results about How to "Guaranteed normal test" patented technology

The invention relates to a testing method for the shear property of asphalt concrete, comprising the following steps: step 1: a hollow cylindrical asphalt concrete specimen (2) with prescribed size is molded; step 2: the asphalt concrete specimen (2) is preserved in a thermostatic air bath for heat preservation until the temperature in the the specimen is up to the temperature required in the test; step 3: the asphalt concrete specimen (2) is put in the middle of a symmetrical cylinder clamp (1), and at the same time a load transmitting shaft (3) is turned to be inserted into the center of the asphalt concrete specimen (2); epoxy adhesive is used for sticking the asphalt concrete specimen (2) with the symmetrical cylinder clamp (1) and the load transmitting shaft (3); step 4: a dynamic device (5) is used for exerting a torsion load on the load transmitting shaft (3), leading the inner wall of the asphalt concrete specimen (2) to produce even shear load; and a data collecting system (6) is used for recording the related data on torsion angle displacement and experiment time of the specimen; the experiment environmental temperature is kept at the required temperature during the testing. The testing method and testing indicators provided by the invention can effectively and accurately describe the shear deformation characteristics of the asphalt concrete material.

The invention relates to infrared radiation measurement and calibration technology field and especially relates to a high-precision surface source blackbody radiation source device capable of being applied under a vacuum low temperature condition. The device mainly comprises a blackbody radiation source main body module, a vacuum cabin, a control cable in the cabin, a through-wall air plug, a control cable outside the cabin, a refrigeration copper braid and a controller module. The blackbody radiation source main body module is placed in the vacuum cabin. The blackbody radiation source main body module is connected to an inner wall of the vacuum cabin through the refrigeration copper braid. The blackbody radiation source main body module is connected to the controller module successively through the control cable in the cabin, the through-wall air plug and the control cable outside the cabin. The device has advantages that a problem that effective emissivity, temperature uniformity and a wide temperature range can not be simultaneously satisfied in the prior art is effectively solved; and an application basis is provided for calibrating and testing infrared detection equipment and establishing a low temperature target performance test system under a vacuum environment.

The invention discloses a device and a method for testing the buoyant force of a buried pipeline. The device and the method are capable of accurately measuring the buoyant force of the pipeline in soil; an annular flexible filler material is arranged on the surface of the sealing steel plate of a pipeline model, so that the frictional force between the pipeline model and a test tank and the test error can be effectively reduced, and a rock-soil body model also can be effectively prevented from entering the gap between the sealing steel plate of the pipeline model and the wall of the test tank, thereby reducing the influence of the boundary effect and guaranteeing the test to be performed under the plane strain condition; glass side surfaces are formed on the test tank so that the displacement deformation conditions of the pipeline model and the rock-soil body can be effectively observed; and the displacement deformation of the pipeline and the soil body can be quantitatively analyzed by the particle image velocity measurement method.

The present invention provides an upper limb functional movement monitoring system and method based on a fabric sensor. The system comprises a signal generating device which comprises a conductive fabric with a signal transmission line which is connected to a button battery, a signal collection and transmission device which collects a voltage signal and sends the signal to a signal receiving and displaying device, the signal receiving and displaying device which receives the voltage signal, carries out functional movement characterization on the signal, displays a functional movement state in real time at the same time, stores data and carries out imaging, wherein the conductive fabric is close to a body upper limb elbow joint, and an upper limb movement stretches the conductive fabric such that the voltage signals at two ends of the conductive fabric are changed. The invention also provides the upper limb functional movement monitoring method based on the fiber sensor. The upper limb functional movement monitoring system and the method have the advantages of low cost, good stability, high sensitivity and strong adaption ability, at the same time a sensitive element can be integrated to the daily clothes, and a basis is provided for biomechanics analysis of human body upper limb movement.

The invention provides a multidimensional full field optical calibration device used for the hyperboloidal reflection mirror which includes collimated light source, a beam microscopy, an optical reference arm, an optical measurement and a receive device; the collimated light beam issued by the collimated light source collimator the beam irradiates into the beam microscopy, the beam microscopy divides the collimated light source into two parts, the reflection part is after reflected by the reflection mirror II and then permeated the beam microscopy to be a reference light; the transmission part is converged to part of mirror of the measured hyperboloidal reflection mirror by the convergence lens, the extension of the convergence light in the intersection of a focus of the hyperboloidal reflection mirror, after reflected by the measured hyperbolic reflection mirror, converge to a standard spherical reflection mirror, the extension of the light converges to the core of the spherical reflection mirror, after reflected by the spherical reflection mirror, returns along the original track, then reflected by the measured hyperboloidal reflection mirror and the convergence lens mirror and semi- reflection mirror, to be a test light; reference light and convergence light converge to the receive device. The device for the invention can measure the surface morphology and measurement parameters of the hyperboloidal reflection mirror which have different scales and high reflection.

The invention discloses a protection circuit suitable for an initiating explosive device on a two-stage ignition bomb. The protection circuit belongs to the technical field of safety protection of the initiating explosive device on the bomb, and solves problems of delayed explosion and poor direct protectiveness of the initiating explosive device caused by a safety protection mode of the conventional initiating explosive device on the bomb. The protection circuit comprises a protection control relay, a protection state detection circuit and a ground control circuit; one end of the protection control relay is connected with a negative power supply end Q of an ignition power supply; the other end of the protection control relay is connected with a negative activating end T of the initiating explosive device; a control signal input end of the protection control relay is connected with a control signal output end of the ground control circuit, and the control signal output end of the protection control relay is connected with the control signal input end of the protection state detection circuit. The protection circuit is suitable for safety protection of the initiating explosive device on the two-stage ignition bomb.

A device for measuring the optical ring of gyroscope on-line modularity, including circuit conciliating modular, light leading-in modular, optical ring modular, the light leading-in modular provides the power and steady polarizing coherent light for the optical ring, transmits the optical interference signal to the electrical signal and exports to the circuit conciliating modular which connected with the light leading-in modular through the electric cable, which can measure, control and output the signal of the whole optical path, the measured optical ring modular is connected with the output end of the light leading-in modular through two pigtail optical fiber being protected, The measurement of the optical ring is in the actual condition of the optical gyroscope and the output and input are identical with the actual use, it not only tests the parameter of the optical ring such as depletion and reciprocity but also tests the system response in the temperature, impact and vibration.

The invention provides a testing method of a single bus chip. The testing method includes the following steps; a first pin of a testing host machine is connected to a first base pin of the chip, a second pin of the testing host machine is connected to a second base pin of the chip, one of the first base pin and the second base pin is a data base pin, and the other is a grounding base pin; the first pin is arranged as a data output pin and outputs grounding signals, and the second pin is arranged as a data input pin; after the chip is powered on, the testing host machine reads the signals input by the second pin and judges whether the read signals are low level signals or not, if the read signals are the low level signals, the first pin is arrranged as the data input pin, the second pin is set as the data output pin, outputs the grounding signals, and communication with the chip is carried out by the first pin; and if the read signals are not the low level signals, the communication with the chip is carried out by the second pin. According to the testing method, the testing host machine can identify the base pins of the chip automatically, set the working modes of the pins according to the conditions of the base pins and improve testing efficiency.

The invention discloses a test method, device and system for independent power supply of a BBU (battery backup unit) and a readable storage medium. The test method comprises the following steps: judging whether a rectification module outputs a power-down signal within a first period after power-down of data storage equipment after detection of power-down of the data storage equipment; if so, judging whether a controller outputs an enable signal within a second period after receiving the power-down signal; if so, judging whether the BBU supplies power to the data storage equipment immediately after receiving the enable signal and outputs a backup preparation signal to the data storage equipment within a third period, so as to facilitate data backup for the data storage equipment, if so, determining that the BBU supplies power independently normally, otherwise, determining that the BBU supplies power independently abnormally. The test of independent power supply of the BBU in the power supply preparation phase is achieved, normal power supply of the BBU to the data storage equipment is effectively ensured, and reliability and safety of power supply of the BBU to the data storage equipment are improved.

The invention provides an integrated test system of an optical line. The integrated test system comprises: a central processor; a field programmable gate array, which is controlled by the central processor; a pulse generator, which is controlled by the field programmable gate array; photoelectric conversion, which is controlled by the pulse generator to emit a corresponded optical signal; a coupler, which is used for receiving the optical signal emitted by the photoelectric conversion; a PIN tube, which is used for receiving the optical signal transmitted by the coupler; signal logarithmic amplification, which is used for amplifying an electric signal output by the PIN tube; high speed A/D collection and processing, which is controlled by the field programmable gate array and is used for processing the electric signal output by the signal logarithmic amplification; a first connector, which is respectively connected with the coupler and an optical fiber; an optical cable visual fault position indicator light source; and a second connector, which is respectively connected with the optical cable visual fault position indicator light source and an optical fiber. According to the invention, a total cost of ownership of the system can be substantially reduced; and it can be avoided that movable interfaces of optical fibers are operated too much.

The invention discloses a device and a method for testing the flow velocity of composite solid propellant slurry. The shells of three viscosity cups are respectively sleeved with a heat preservation jacket. A pressure output pipeline provides pressure for each viscosity cup. A pressure transmitter and a precise pressure reducing valve are mounted on the pressure output pipeline. The signal outputend of the pressure transmitter is connected with the signal input end of the computer through a data line. The signal output end of the electronic balance is connected with the signal input end of the computer through a data line. A periodic test method is adopted to sequentially obtain the flow velocity of the propellant slurry in each sampling period until the average value of the mass of the obtained propellant slurry in the period is less than 1g/min. Pressurizing curing production process conditions are reproduced, multiple models of pressurizing pouring processes of the medium-energy solid rocket engine are simulated, the change trend of the slurry along with curing reaction flowability is detected by applying the slurry flow velocity experiment model, and the high-solid-content high-viscosity slurry flow velocity and the accurate pressure curing time are given.

The invention discloses a capacitor and a permanent magnetic direct-current motor. The capacitor comprises a capacitor ceramic base sheet and at least three electrodes arranged on the capacitor ceramic base sheet. The capacitor ceramic base sheet is shape of a ring or a polygon. The capacitor is used on the permanent magnetic direct-current motor. When the motor is running, voltage between a commutator and an electric brush is rapidly reduced by charging the capacitor, so sparks caused by rotation of the motor are reduced or restrained and service lifetime of the motor is greatly extended. Via the capacitor, it can be ensured that the motor can pass the EMC test. The capacitor can be simply welded, installed and manufactured in the traditional dry pressing technique, has high dielectric constant, complex structure and small size, has no redundant lead wires and can be firmly fixed on a motor rotator. The capacitor and the permanent magnetic direct-current motor can be widely applied in capacitor technology field.

The invention discloses a cold and heat fatigue test device and method. The cold and heat fatigue test device comprises a machine case, a first water tank, a second water tank, a sample basket, a first driving device, a workpiece inflating pipeline and an airtightness detection element, wherein the machine case comprises a base; the first water tank and the second water tank are arranged on the base; the water temperature in the first water tank is different from the water temperature in the second water tank; the sample basket is used for accommodating a workpiece; the sample basket is arranged above the base; the first driving device comprises a horizontal driving mechanism and a vertical driving mechanism; the horizontal driving mechanism is used for driving the sample basket to do reciprocating movement in a position between the upper sides of the first water tank and the second water tank; the vertical driving mechanism is used for driving the sample basket to do ascending and descending movement; the workpiece inflating pipeline is used for performing ventilation on the workpiece; the airtightness detection element is used for performing airtightness detection on the workpiece during the workpiece ventilation. The device and the method can be used for automatically testing the fatigue of the workpiece and have the advantages that the test efficiency is high, and the manual operation can be effectively reduced.

The invention discloses aerial testing equipment for evaluating performance of a short-wave antenna, and belongs to the technical field of communication. The aerial testing equipment is carried on anunmanned aerial vehicle and comprises a short-wave antenna, a power amplification module, a signal source, a data exchange and control module, a data transmission radio, a flight control module and apower module; the short-wave antenna is used for communicating with the to-be-tested short-wave antenna; the flight control module is used for obtaining state information of the unmanned aerial vehicle, receiving a flight control instruction sent by center control equipment arranged on the ground, and controlling the unmanned aerial vehicle to operate according to the state information of the unmanned aerial vehicle and the flight control instruction; and the data exchange and control module is used for obtaining the state information of the unmanned aerial vehicle and a power amplification output level value of the power amplification module after the unmanned aerial vehicle reaches the predetermined flight height, and transmitting the state information and the power amplification outputlevel value to the center control equipment through the data transmission radio, and the power amplification output level value is used for being provided for the center control equipment to evaluating the performance of the to-be-tested short-wave antenna.

The invention relates to the test equipment field of components of an automobile speed changer, more particularly to a rapid test and running-in system for a flexible driving element utilized by a buncher. According to the invention, a problem on low productivity can be solved, wherein the low productivity is caused by tedious installation of a metal tape or a driving chain product of a buncher during testing and running-in processes and long loading and unloading periods of workpieces during the testing and running-in processes. Four conical disc shafts are installed on a rack of the system; that is, the shafts of conical discs are installed on the rack; besides, each the two shafts are arranged coaxially; conical surfaces on the conical disc shafts are opposite to each other; and the coaxial conical disc shafts are connected though a key or in a special-shaped shaft-hole connection. Moreover, the coaxial conical disc shafts are connected by a ball key having a retainer through a ball; each pair of coaxial conical disc shafts is respectively engaged with a conical disc or a conical disc shaft through one or a set of coaxial gears, so that it can be ensured that each the two conical disc shafts make synchronized rotations; and between each the pair of coaxial conical disc shafts, at least one conical disc shaft is connected with a hydraulic cylinder that is capable of carrying out reciprocated driving movements at an axial direction. According to the invention, the system is mainly applied to production and a test of a metal tape or a driving chain, wherein the metal tape or the driving chain are utilized by a buncher.

The invention relates to an exercise test data generation method and device, electronic equipment and a storage medium. The method comprises the steps of obtaining an exercise error rate of each teaching chapter in student exercises; determining examination range information, and searching an exercise error rate corresponding to a to-be-examined chapter in the examination range information; obtaining the test question proportion of each to-be-examined chapter in the examination range information, and obtaining the test question weight coefficient of each to-be-examined chapter according to thetest question proportion of each to-be-examined chapter and the exercise error rate corresponding to each to-be-examined chapter; presetting an examination test question bank corresponding to each chapter, selecting a test question corresponding to each chapter to be examined from the preset examination test question bank according to the test question weight coefficient of each chapter to be examined, and generating an examination test question. Examination questions corresponding to the error rate are automatically generated according to statistics of the exercise error rate of each chapter.

The present invention relates to an oil-collecting oil casing communicating device. It is formed from two layers of steel pipe, and is characterized by that the diameter of outer layer steel pipe is slightly less than the diameter of casing, the diameter of inner layer steel pipe is equal to or less than the diameter of oil pipe, two ends of inner layer steel pipe are equipped with male thread respectively, and the outer layer steel pipe is welded between two male threads of inner layer steel pipe, on the periphery of upper portion of said inner layer steel pipe several holes are set, on the periphery of lower portion of said outer layer steel pipe several holes are set, the male thread of inner layer steel pipe is connected with oil pipe under the oil well pump by means of collar.

The invention discloses a carbon nanotube fiber electrodeformation experiment table and a related experiment method, and belongs to the technical field of electrochemical actuation performance testing. The carbon nanotube fiber electrodeformation experiment table mainly comprises a beaker clamping device, an electrode clamping device, a displacement measuring device, a power supply and the like, wherein a beaker containing ionic liquid is placed on a beaker support and is fixed by the beaker clamping device, wherein one ends of electrode chucks are led out by a power supply, a positive electrode chuck clamps an Ag/AgCl reference electrode, a negative electrode chuck clamps stable double-helix structure carbon nanotube fibers with S-shaped hooks hung at the tail ends, the stable double-helix structure carbon nanotube fibers are respectively fixed by the electrode clamping device, and the displacement measuring device is placed in the beaker to measure the electrodeformation shrinkage amount of the fibers after the power supply is powered on. According to the invention, errors of an experiment caused by an external environment can be reduced, an electrolyte solution is prevented frombeing electrolyzed after being electrified, experiment errors caused by bubbles are avoided, and the accuracy of an electrodeformation experiment result is improved.

The invention provides an intelligent downhole flow calibration method of a separate injection standard meter. The intelligent downhole flow calibration method comprises the steps that calibration isconducted repeatedly through the downhole flow meter in sequence; a curve is made; a corresponding equation y=21.253x<2>+285.33x-117.81 is obtained according to the curve; the flow equation is input into intelligent water distributors, and the intelligent water distributors are put into a well for water injection work; and finally correction and calibration are conducted regularly. The intelligentdownhole flow calibration method is easy to operate and high in accuracy, the problem that the downhole flow cannot be calibrated under the well is solved, and it is guaranteed that the downhole flowis measured accurately for a long time; downhole flow calibration can be conducted without pipe column moving operation, thus the operation risk and cost are reduced, and flow calibration can be conducted in a layered mode; downhole self-calibration and correction are conducted according to the preset flow equation, and high-precision operation of downhole flow testing and adjusting is guaranteedfor a long time; and according to the method, the accuracy is further improved through the positive stroke and the reverse stroke.

The invention discloses a modeling method of multi-antenna copolarization channel correlation and an apparatus thereof. A multi-antenna electromagnetic system is regarded as a three port microwave network which comprises two road ports and one field port. The method includes the following steps: determining property characterization parameters of incident and scattering of the field port; determining property characterization parameters of transmission and reflection of the road ports; determining property characterization models of transmission and coupling of field and road ports; determining a characterization model of multi-antenna copolarization channel correlation. The method discloses a modeling scheme of mobile terminal copolarization channel correlation, wherein the modeling scheme has not provided yet. Therefore, performance research, test and authentication of multiple antennas of mobile terminals can be guaranteed by the method.

The invention belongs to the field of rail transit equipment detection, and particularly relates to a rail circuit outdoor equipment testing device, system and method. The testing device comprises anoutput module, a signal analysis module, a power supply module and a processor. The processor is connected with the output module, the signal analysis module and the power supply module. The processoris used for generating and sending a test instruction to obtain test data. The output module is used for receiving a test instruction and outputting a driving signal to the tested equipment accordingto the test instruction. The signal analysis module is used for acquiring a test signal generated by the tested equipment, analyzing the test signal, and obtaining and sending test data. The testingdevice provided by the invention has the characteristic of standardization. The same testing device is used for testing all outdoor equipment, and it is ensured that the track circuit outdoor equipment can be tested under the unified testing standard.