1792results about How to "Simple test method" patented technology

The invention discloses a method for testing net energy of an electrical vehicle power battery, which comprises the following steps of: charging a battery set in a state of discharging stop voltage to the state of charging stop voltage, recording the charged energy, discharging the battery set to a pre-set SOC by the stated current, recording the energy discharged at the first time, and then performing a working situation circulation test to the electrical vehicle, discharging the battery set to the discharging stop voltage by the stated current when the test is finished, recording the energy discharged at the second time, obtaining the energy change amount of the battery in the working situation circulation test according to the average charging and discharging efficiency of the battery set, correcting the energy change amount of the battery in the working situation circulation test according to the battery charging and discharging energy efficiency models, and obtaining the energy actually stored by the battery in the working situation circulation process, namely the battery net energy. The method considers the effect to battery net energy of charging and discharging efficiencies on one hand with high testing accuracy, and only tests the charging and discharging energies of the electrical vehicle before and after the test on the other hand, which is easy to be realized.

The invention relates to fields of communication, specially a detecting system and method of optical fiber line fault. The detecting system includes: local equipment, terminal equipment, at least one light delay branching units which are between the local equipment and terminal equipment, test wavelength reflect device which is connected between the light delay branching units and terminal equipment and close to the spur track fiber of the terminal equipment, and test device OTDR of main circuit fiber which is between the light delay branching units and local equipment, said light delay branching units generate different delay time for light signal of different port branching light path, thereinto the length of branching fiber of said light delay branching units and terminal equipment is the same. The detecting method and system of the fiber line fault in this invention can simplify the test method of fiber line fault diagnosis, and decrease the cost of fiber construction.

The invention relates to a torsional fretting friction wear test method, the method is that: an upper testing part is clamped in an upper clamp, a lower clamp is fixed with a high-precision low-speed rotation table by a thread, a vertical central line of a holding cavity of the lower clamp is aligned with a rotating shaft of the high-precision low-speed rotation table, a spherical lower testing part is clamped by the lower clamp; the upper clamp is controlled for up and down movements by a data collection control system, the upper and lower testing parts are contacted and are exerted by a set load, at the same time, the lower clamp and the lower testing part clamped by the lower clamp are controlled by the data collection control system to carry out a plurality of times of reciprocating rotations by a set rotation speed and a rotation angle; at the same time, the friction torque is measured by a six-dimension force/torque sensor which is connected with the upper clamp and is sent to the data collection control system, and a torque-angular displacement curve under the set rotation speed and the load conditions can be obtained by analysis. The method can conveniently allow the materials to generate the small angle torsional fretting friction wear, the degree of the automation is high, the precision of the control and the test is high and the reproducibility of the test data is good.

The invention discloses an electronic mutual inductor test system and a test method. The electronic mutual inductor test system comprises a standard device, a signal conversion device, an error measuring device, a test power supply, a merging unit and a tested electronic mutual inductor, wherein the standard device is used for providing a standard signal serving as a test reference; the signal conversion device is used for receiving the standard signal and converting the standard signal into an analog signal which can be acquired by the error measuring device; the test power supply is used for outputting a primary voltage and a primary current for test use; the merging unit is used for receiving a digital signal output by the tested electronic mutual inductor and processing the digital signal; and the error measuring device is used for receiving the standard signal output by the signal conversion device and the digital signal output by the merging unit, and acquiring the ratio difference and the phase difference of the tested electronic mutual inductor. The electronic mutual inductor test system is particularly suitable for a field error test of the electronic mutual inductor, andhas the advantages of convenient test work, high reliability, small equipment volume, light weight, high test result accuracy and the like.

The invention discloses a method for testing and analyzing frictional noise and a test device for the method. The method comprises that: a lower fixture clamping a lower friction part is fixed onto a reciprocating device; an upper fixture clamping an upper friction part penetrates through a horizontal support to contact with the bottom of a strain force sensor; a three-dimensional acceleration sensor is mounted on the upper fixture; two ends of the horizontal support are fixed onto support bases by piezoelectric force sensors; and the strain force sensor is fixed to the bottom of a two-dimensional moving table. A sensing end of an acoustic sensor is close to a contact interface of the upper friction part and the lower friction part, and the two-dimensional moving table is controlled so that the upper friction part and the lower friction part are controlled to do reciprocating friction motion, and the three sensors accurately, synchronously and dynamically acquire the frictional noise,vibration acceleration and frictional force and analyze the frictional noise, the vibration acceleration and the frictional force in real time. Therefore, mutual relation and influencing law of the frictional noise, the interface and characteristics of a system are accurately analyzed, a mechanism of production of the frictional noise is disclosed, and a more accurate and reliable test basis is provided for realizing noise-reduction design for mechanical equipment, improving performance of the mechanical equipment and prolonging the service life of the mechanical equipment.

The invention belongs to the technical field of marine equipment, and particularly relates to a marine splash environment simulation test device, wherein stringed testing cable holes are arranged in the upper part of one side surface of the box-structured test box, a frame-structured drive pull rod is arranged on the other side, a splash plate angle adjusting rod is arranged at the lower part, and a splash plate is formed at the inner end of the splash plate angle adjusting rod; sensors and water inlets are arranged on the side surface of a liquid area from top to bottom; a gas exhaust opening, a ventilating and moisture exhausting device, an infrared heating lamp and a box temperature sensor are fixedly and sequentially arranged on the top side surface of the test box body from right to left; and a ultraviolet lamp, an air blower, a nozzle, a water spray pump, a liquid level controller, a dissolved oxygen sensor and a water drain opening are arranged on the opposite side of the test box corresponding to the side surface provided with the drive pull rod. The marine splash environment simulation test device has simple structure and higher automation degree, is convenient to operate, needs no staff attendance, and can simulate marine splash environment in a laboratory, so as to analyze and evaluate the corrosion and aging of the material.

The invention relates to a rotary inching friction abrasion test method and a relative device, wherein the method comprises clamping a plane upper sample on an upper clamp, fixing a lower clamp on the horizontal rotation shaft of a high-precision ultra-low speed rotation motor, clamping a spherical lower sample via a lower clamp, aligning the horizontal central line of the lower sample with the rotation shaft of the rotation motor, using a data acquisition and control system to control the up-and-down and left-and-right motions of the upper clamp to contact the upper and lower samples and apply a preset normal load, at the same time, using the data acquisition and control system to control the rotation motor to reciprocally rotate the lower clamp and lower sample at preset rotation argument, rotation speed and times, to realize the rotary inching friction between the upper and lower samples, using a six-dimension force/torque sensor to test and feed the friction force to the data acquisition and control system to be analyzed to obtain a friction force-angle displacement curvature. The inventive method can simply realize small angle rotary inching friction abrasion of material, with high automatic degree, high control and test accuracy and better test data reappearance.

The invention belongs to the technical field of building construction stress testing and relates to a method for testing the pile shaft stress of a static pressure high-strength pre-stressed concrete pipe pile. When tensile force or pressure is received by a fiber Bragg grating sensor, the optical fiber grating period is changed due to the extension or the compression of the sensor, and therefore the effective refraction rate of the FBG sensor is changed. According to the axial strain of one section of the high-strength pre-stressed concrete pipe pile, the pile shaft stress of the static pressure high-strength pre-stressed concrete pipe pile is obtained, and therefore the axial force of a pile shaft, the side friction and the pile tip resistance are obtained. The method for testing the pile shaft stress of the static pressure high-strength pre-stressed concrete pipe pile is simple, convenient to operate, high in measuring accuracy, high in sensitivity, strong in electromagnetic field interference resistance, high in rate of survival, and capable of achieving quasi-distributed and automatic monitoring easier compared with a method of a traditional force testing element.

The invention discloses a bushing non-uniform external pressure loading test device and a bushing non-uniform external pressure loading test method. The bushing non-uniform external pressure loading test device comprises, a rubber sleeve, an extruding cylinder, a mechanical plugging device, an external pressure loading system, an end clamping mechanism and a pressure detecting system, wherein the rubber sleeve is tubular rubber, a channel with the circular section is arranged at the axial centre, the rubber sleeve is sleeved outside a to-be-tested bushing, the periphery of the cross section of the rubber sleeve is a non-circular curved surface, an extruding cylinder is sleeved outside the rubber sleeve to form a pressure cavity for containing a high-pressure medium; the mechanical plugging device is hermetically arranged at two ends of the extruding cylinder, the centre of the mechanical plugging device is provided with a bushing hole through which a bushing is capable of passing; two ends of the rubber sleeve prop against the inner sides of the mechanical plugging device, and the space between the bushing hole of the mechanical plugging deice and the peripheral wall of the bushing is sealed; the external pressure loading system is communicated with the extruding cylinder and used for injecting the high-pressure medium into the extruding cylinder; the end clamping mechanism is used for clamping two ends of the bushing; the pressure detecting system is used for detecting the pressure on the outer wall of the bushing through a pressure sensor arranged on the outer wall of the bushing; the end clamping mechanism is fixed on a test frame. The combined loading pressure test for applying non-uniform external pressure is realized according to the device disclosed by the invention.

The invention discloses a method for testing the content of magnetic substances in a lithium ion battery anode material. The method comprises the following steps: ultrasonically dispersing a lithium ion battery anode material to be tested into a solvent, adding a polymer cladded magnet, ultrasonically adsorbing the magnetic substances, thereby obtaining the polymer cladded magnet adsorbed with the magnetic substances; adding the polymer cladded magnet adsorbed with the magnetic substances into a cleaning solution for performing ultrasonic cleaning; dissolving the cleaned polymer cladded magnet adsorbed with the magnetic substances by using an acidic reagent, thereby obtaining a dissolution solution; and testing the content of the magnetic substances in the dissolution solution. According to the method, the content of the magnetic substances in the lithium ion battery anode material can be accurately tested, particularly the content of the magnetic substances contained in micron order materials and nanoscale materials can be accurately detected. The testing method is simple, easy to operate and high in precision, and the precision can reach a ppb level.

The invention relates to an optical parameter detection method of low-radiation coated glass, wherein the low-radiation coated glass is SnO2:F/SiCxOy, 0<x<1, and 1<y<4. The invention belongs to a coated glass detection field. On basis of obtaining a spectroscopic ellipsometry of SnO2:F/SiCxOy energy saving coated glass, the method introduces a five-layer film structure and an optical dispersion equation, returns an actually-measured spectroscopic ellipsometry by iteration, and finally obtains a film structure of the SnO2:F/SiCxOy coated glass and optical parameters of each layer. By the method, on-line real time monitor of optical performances of the coated glass can be implemented. The method can obtain an accurate film structure and the optical parameters only by optical test means, has advantages of no damage on a sample, small time consuming for measuring, simple measuring method, and no special requirement on a sample surface to be measured, and is very suitable for performance detection of the SnO2:F/SiCxOy energy saving coated glass.

The invention discloses a sensor for measuring the corrosion of the inner wall of a metal tank body and a monitoring method. The sensor is of the following structure that the sensor comprises a fixing device, a sleeve, a reference electrode, an auxiliary electrode and a working electrode; and in the measuring process, the sensor is arranged at the top of a metal tank, the metal tank and the sensor are fixed and are tightly contacted through magnets, the electrodes partly extend into the tank to be in contact with a solution for performing an electrochemical detection, and a contact of the working electrode is attracted by the magnets to be fixed on the outer surface of the tank body. In the monitoring process, the corrosion behavior and degree of the inner wall of the metal tank are tested by utilizing an electrochemical low-frequency impedance spectroscopy technology. In the technical scheme disclosed by the invention, the sensor has simple manufacturing process, is sensitive to response, is convenient to carry and is simple to operate; the monitoring method is simple and convenient and has high data resolvability; the breakage condition, the breakage type and the corrosion degree of a coating on the inner wall of the metal tank can be rapidly judged in the service environment by the monitoring method; and the monitoring method is suitable for carrying out rapid detection andevaluation on the corrosion degree of the coatings on the inner walls of the metal tanks with various sizes.

The invention discloses a rigid body mode testing method for a powertrain mounting system under the loading condition. In the method, a heavy object is hung on a powertrain mounting device under the loading condition; and a rope for hanging the heavy object is cut to suddenly release the force acted on the powertrain mounting device so as to excite the free vibration of the powertrain mounting device and immediately trigger a data acquisition unit to record and store the data on a vibration transducer at the moment. A rigid body mode of the mounting system is tested by the method and the obtained each-order natural frequency and decoupling rate are the actual and real natural frequency and decoupling rate of a tested vehicle, so that the method tests the performance of the vehicle most directly, really and reliably. The testing method can be performed on any entire vehicle, only a proper number of heavy objects is needed, and the design and processing of a test bench are avoided, so that the testing cost is basically avoided. Obviously, the testing time and the testing cost are greatly saved.

The invention discloses a phytotron haze environment simulating device and a haze environment simulating method thereof. The device comprises a phytotron, a haze parameter detection unit, a cloud mist generation unit and a dust-haze generation unit, the haze parameter detection unit is arranged in the phytotron, and the output end of the cloud mist generation unit and the output end of the dust-haze generation unit are communicated with the interior of the phytotron. The simulating method comprises the steps that dust-haze particle raw materials are prepared and evenly mixed, the clout mist generation unit is started to form a cloud mist environment, the dust-haze generation unit is started to form a dust-haze environment, and mutual superposition, chemical combination and even mixing of mist steam and dust-haze particles are facilitated to form a haze environment. According to the phytotron haze environment simulating device and the haze environment simulating method thereof, PM2.5 particles and the stable haze environment of which the cloud mist concentration, chemical components of dust-haze particles and particle size distribution can be freely controlled and adjusted can be formed in the phytotron, and a safe and reliable experiment support is provided for researching the influence of the haze environment on human body health, outdoor traffic and electrical external insulation equipment.

The invention discloses a high-speed motorized spindle non-contact loading force and torque testing device. A fixed seat and an entire support are arranged on a working platform, the fixed seat is installed on the working platform through four pull pressure sensors which are distributed at the four corners of the lower surface of the fixed seat, a support seat is fixed on the upper surface of the fixed seat and is provided with a motorized spindle, and one axial end of the motorized spindle is sleeved with a loading disk; and the four pull pressure sensors are simultaneously connected with an amplified filter circuit, the amplified filter circuit is connected with a data acquisition card, the data acquisition card is connected with an industrial personal computer, and the industrial personal computer is connected with a displaying, printing and keyboard input device. The invention also discloses a radial loading force and loading torque testing method by utilizing the device. The problem of difficult testing of loading capacity in a high-speed motorized spindle characteristic analysis test is solved by using the device and method disclosed by the invention.

The invention discloses a dynamic interference potential test system for a buried pipeline. The dynamic interference potential test system comprises a polarized probe, a high-frequency data acquisition device and a data processing device. As the polarized probe replaces a traditional copper sulfate reference electrode, valid data can be provided for corrosion risk assessment of a pipeline at a defect point of the corrosion protection layer of a simulating pipeline, and at the same time potential errors brought by the placement position of the traditional copper sulfate reference electrode are avoided; excavation and measurement for soil electric resistance around the buried pipeline are not needed, a test method is simplified, and further errors brought by orientation of measurement for soil electric resistance are eliminated. The high-frequency data acquisition device is used for acquiring data, and then the data is transmitted to the data processing device for Fourier transform, so that conversion from time domain to frequency domain of the AC-DC superimposed dynamic potential can be obtained, the frequency component of stray current can be accurately judged, and the size of DC potential and the source and size of AC interference can be accurately obtained.

The invention discloses an intelligent and conventional transformer substation optical fiber longitudinal difference protection channel joint debugging test method which is characterized in that the intelligent transformer substation adopts a light inter-range instrumentation group (IRIG)-B code synchronous time tick mode, and the conventional transformer substation adopts a global positioning system (GPS) time tick mode, so that a plurality of points can be subjected to synchronous acquisition and trigger test; during test, relay protection testers on two sides are respectively connected to a GPS clock and an IRIG-B code clock; and time information comprising date, hour, minute, second and the like is sent at the frequency of one time per second. The intelligent and conventional transformer substation optical fiber longitudinal difference protection channel joint debugging test method has the advantages that the intelligent transformer substation adopts the light IRIG-B code synchronous time tick mode, and the conventional transformer substation adopts the GPS time tick mode, so that protection synchronous sampling and synchronous sampling of the testers on two sides are completed by using the two clocks, and a plurality of points can be subjected to synchronous acquisition and trigger test; therefore, the test on dual-end optical fiber current longitudinal difference protection is realized; and the test method is simple, and the data is accurate.

The invention discloses an objective quantitative evaluation method for idle noise in an automobile. The objective quantitative evaluation method comprises the steps of acquiring objective parametersand processing of subjective parameters, carrying out correlation analysis on the subjective evaluation result and the objective parameters, establishing a correlation model by using a multi-element linear regression, and obtaining an objective quantitative mathematical model of the subjective evaluation of idle speed noises. According to the method, the subjective evaluation condition of the idling noise performance of the automobile can be obtained. The objective quantitative evaluation method is a comprehensive, direct, rapid and effective testing and evaluating method. The test method applied by the method is simple, clear in idea and very high in universality, can be suitable for testing and evaluating the idle speed noise performance of various types of vehicles, and is low in cost.