46results about How to "Avoid the effects of testing" patented technology

The invention discloses a stiffness testing device for gas bearing, which comprises a platform, a display instrument, a loading mechanism and a portal frame; a measured assembly is arranged on the upper surface of the platform, the upper surface of the platform is an air floating surface, and the gas bearing is formed between the measured assembly and the platform; the portal frame is arranged on the platform; the loading mechanism is arranged on the portal frame and used for exerting a loading force on the measured assembly; and the display instrument is connected with the loading mechanism, and the display instrument carries out real-time display on the loading force exerted by the loading mechanism. By using the stiffness testing device for gas-lubricated bearings disclosed by the invention, the stiffness of a single gas bearing and the stiffness of combined gas bearings can be tested; and the stiffness testing device is simple in operation.

The invention relates to an onboard LED automatic testing method, and belongs to the technical field of quality control for electronic products. In the method, detecting equipment controls a camera to only photograph within the maximum boundary of a board where the LED is located, further the color and luminance of the picture can be tested to obtain the testing result of the LED, so that the influence of light rays of the ambient environment on the testing is avoided as far as possible, the testing requirement can be met without adopting a testing accommodating chamber, the testing procedure is greatly simplified, the testing efficiency is improved, further, the shutter time of the camera can be shortened through improving the luminance of the LED, the luminance of the LED and the luminance of the background can be distinguished better, and the testing accuracy is improved. The onboard LED automatic testing method provided by the invention is low in cost and has a wider application range.

The invention relates to a device for testing sound of a notebook computer. A horn test device is arranged on the right side of a notebook computer placing jig, and comprises a screw rod motor and a microphone for test; the microphone for test is arranged on a moving rod of the screw rod motor; the screw rod motor can drive the microphone for test to move to a position right above a horn of a notebook computer to be tested on the notebook computer placing jig; a microphone test device is arranged on the left side of the notebook computer placing jig; the horn of the microphone test device is opposite to the microphone of the notebook computer to be tested on the notebook computer placing jig; and a microphone covering device is arranged right below the microphone of the notebook computer to be tested on the notebook computer placing jig, and comprises a rotation and linear motion integration mechanism and a covering pressure head arranged on the mechanism. The device can be used for carrying out an acoustic performance test on the assembled notebook computer, test process automation is realized, and the influence of personal factors and external factors on the test is avoided.

The invention provides a partial discharge ultrasonic signal and atlas identification system. The partial discharge ultrasonic signal and atlas identification system comprises an ultrasonic sensor, asignal acquisition box and a diagnosis analyzer, wherein the ultrasonic sensor is connected with the signal acquisition box through a coaxial cable, and the signal acquisition box is connected with the diagnosis analyzer through a USB transmission line. The invention further provides a partial discharge ultrasonic signal and atlas identification method. The device is small in size, light in weight, easy to install on site, simple and convenient to apply and operate, and capable of detecting the discharge capacity of partial discharge of a cable connector and a terminal and judging the discharge fault state.

The invention discloses a suddenly applied load testing device. The suddenly applied load testing device comprises a support, a tension sensor, a cable force adjusting device, a cable breaking device, a gravity loading device and a controller, wherein the upper end of the cable force adjusting device is connected with the top of the support; an output end of the cable force adjusting device is connected with the upper end of the tension sensor through a rope; the lower end of the tension sensor is connected with the upper end of the cable breaking device; the lower end of the cable breaking device is connected with the upper end of the gravity loading device; the lower end surface of the gravity loading device is in contact with the upper surface of a test piece; an output end of the tension sensor is connected with an input end of the controller; and an output end of the controller is connected with a control end of the cable force adjusting device. By the device, instant compression strength of the test piece can be quantitatively analyzed.

The invention provides a reducer performance testing table which comprises the components of a worktable which comprises a working surface that is arranged in a horizontal direction; a compressing device which is fixed on the working surface and is provided with a compressing head for compressing the reducer on the working surface; and a driving device which is fixed on the worktable, wherein thedriving end of the driving device is used for connecting with the input end of the reducer and drives the reducer to rotate. The reducer performance testing table provided by the invention can firmlyfix the housing of the reducer on the worktable, thereby preventing influence of motor vibration to testing, improving accuracy of a testing result, realizing no requirement for fixation by manpower,realizing more convenient operation and reducing labor intensity.

The invention relates to a bend and twist combination test machine. When a non-destructive twist test is performed, a stepping motor is used for driving a bevel gear to rotate, so that a test piece which is synchronous with the bevel gear is twisted, and a torque sensor is used for measuring torque acted on the test piece; when a bend test is performed, a fixing lead screw and a nut pair are used for driving parallel slideways fixed on nuts to move, bending force is exerted on the test piece, and at the same time, another lead screw which is perpendicular to the fixed lead screw and a nut pair are used for regulating the position of a force applying point on the test piece; a pressure sensor and a displacement sensor are respectively used for measuring force acted on the test piece and deformation generated by the test piece, the bending tests of a simple support beam, a cantilever beam and an overhanging beam are performed.

The invention discloses an engine oil consumption real-time testing method, and relates to the technical field of engine detection. The technical problems of low degree of accuracy and large error ofexisting technology testing are solved. The engine oil consumption real-time testing method comprises the steps that engine oil is added into an engine, a liquid level in the engine is fed back in real time, and the engine is started for testing; the following process is repeated until the testing is finished, specifically, the engine oil consumed in the testing process is supplemented for the engine in real time according to the initial liquid level in the engine, so that the engine oil in the engine keeps the initial liquid level, and the supplemented engine oil quantity is monitored in realtime; and the testing is finished, and monitoring data for the engine oil quantity is output. The invention further discloses an engine oil consumption real-time testing device. The structure is simple, equipment such as an oil pump and a frequency converter are not needed, complex staking-work is further not needed in use, using is simple, the testing degree of accuracy is high, and the testingerror is small.

The invention discloses a set of nitrogen and oxygen isotope analyzer for nitrous oxide gas generated by a denitrifying bacteria method. The nitrogen and oxygen isotope analyzer is characterized in that the device can realize enrichment and purification of the nitrous oxide gas generated by the denitrifying bacteria method, a lot of organic components generated in a reaction process of gas CO2, steam and bacteria are removed, and influences on a test when impurity gas enters a mass spectrometer are avoided; when delta18O / 16O and delta15N / 14N in the nitrous oxide gas are analyzed and tested, the nitrous oxide gas is introduced into a gas isotope mass spectrometer through high-temperature cracking of the nitrous oxide gas, so that delta15N / 14N and delta17O / 16O or excess 17O / 16O and delta18O / 16O of N2 and O2 can be analyzed and determined.

The invention relates to a tablet PC loudspeaker and microphone automatic calibrating device and a method thereof. A left loudspeaker sound receiving testing device, a right loudspeaker sound receiving testing device, and an upper loudspeaker sound receiving testing device are arranged at one side of a product holding tool along the X-axis horizontal direction, a first test microphone is arranged on the left loudspeaker sound receiving testing device and the right loudspeaker sound receiving testing device, a second test microphone is arranged on the upper loudspeaker sound receiving testing device, a microphone testing device is arranged at the left side of the product holding tool and is provided with a test horn, a comparison microphone movement device is arranged at the left side of the product holding tool and is provided with a comparison microphone, a microphone sealing device is arranged at the left side of the product holding tool and is arranged under the microphone of a product to be tested, and the microphone sealing device includes an X-Z axis linkage mechanism and a sealing head on the linkage mechanism. The automatic calibrating device and method perform the detection and calibration of acoustic performance and perform the comprehensive analysis and determination of the horn and the microphones to guarantee the stability of various acoustic performances after a product is assembled and further to realize the automatic testing.

The invention discloses a touch key testing device. The touch key testing device includes a touch device, a touch key, a control circuit and an output device, wherein the touch device is used to receive a control signal sent from the control circuit and touch the touch key according to the received control signal; the touch key is used to sense the touch of the touch device and send a trigger signal after sensing that the touch key is touched; the control circuit is used for transmitting the control signal to the touch device, receiving the trigger signal sent from the touch key, determining the operation state of the touch key according to the trigger signal, and forming and sending a feedback signal to the output device; and the output device is used for receiving the feedback signal andoutputting the test result of the touch key according to the feedback signal. The technical scheme of the touch key testing device realizes the reliability of smart testing of the touch key, is intuitive and reliable in the test result, saves human resources, and avoids the influence of environmental factors on the test.

The invention discloses a device for testing a current sensor, and the device comprises a sensor fixing mechanism, a linear DC power supply, and an oscilloscope. The interior of the sensor fixing mechanism is provided with a fixing device, and the lower end of a current fixing device is provided with a support rod. The support rod is connected with a sliding rod, and the sliding rod is slidingly connected with a fixed rod. A first spring is disposed between the fixed rod and the support rod, and the first sleeve sleeves the sliding rod. The lower end of the fixed rod is fixedly connected witha support plate, and the lower end of the support plate is provided with a lifting device. The linear DC power supply is used for providing an output current, and the oscilloscope, a signal generator,a power amplifier and a load resistor are used for testing a current sensor, and the current sensor is disposed in the sensor fixing mechanism. During the testing of the current sensor, the device reduces the interference caused by the conductive dust to the testing, and enables the testing result to be more accurate. A DC line passes through a through hole, a fixed sleeve and a coil of the current sensor, thereby preventing the jitter of the DC line from affecting a testing result, and enabling the testing to be more precise.

The invention discloses a transmitting / receiving switching control signal generation method and device supporting multi-T / R-assembly test. The device comprises a T / R assembly state controller. The T / R assembly state controller is connected with a plurality of digital T / R assemblies to be tested. The T / R assembly state controller is connected to a digital oscilloscope through a transmitting / receiving switching line. The plurality of digital T / R assemblies to be tested are connected to the digital oscilloscope through a switching network. The T / R assembly state controller comprises a transmitting / receiving switching unit. The transmitting / receiving switching unit is used for sending a synchronization signal to the digital oscilloscope while the state of each digital T / R assembly to be tested changes. The method and device can realize multi-assembly transmitting / receiving switching time test through only one transmitting / receiving switching control signal output port; and transmitting / receiving switching control signal output can be strictly synchronous with the change of transmitting / receiving state of each assembly.

The invention discloses a multifunctional diode testing device comprising a test bench; two groups of limiting grooves are formed in the top end of the test bench, a test panel is embedded between thetwo groups of limiting grooves at the top end of the test bench, a positioning plate is arranged at the top end of the test panel, a cutting disc is installed close to the side wall of the test panelat the top end of the test bench, a supporting plate is arranged at the rear end of the test bench, and a connecting plate is arranged close to the top end at the front end of the supporting plate. According to the multifunctional diode testing device in the invention, the positioning plate is arranged, a plurality of positioning grooves are formed in the positioning plate, so that the diodes canbe well fixed and positioned, a plurality of diodes can be tested at the same time in cooperation with the test panel, the testing efficiency is improved, diode support arms can be cut by arranging the cutting disc, due to the arrangement of a heat preservation box, the storage of the diodes can be facilitated and heating can be realized, and the interference of the temperature on the diode testis effectively avoided.

The invention discloses a method for rapidly identifying water-saving drought resistance of wheat by utilizing a remote sensing vegetation index NDVI. The method comprises the following steps: a variety comparison test, acquisition of an NDVI value of a canopy after flowering, construction of an NDVI index, and calculation of an index for evaluating the water-saving drought resistance of the wheat variety based on NDVI related indexes. On the basis of drought resistance evaluation tests of different wheat varieties, canopy NDVI information of different varieties is obtained, indexes are constructed to replace a yield to calculate drought resistance indexes, and therefore a purpose of variety identification and selection is achieved. The new method overcomes the defects of time consumption and labor consumption of traditional yield measurement, and can quickly and nondestructively meet the requirements of drought resistance identification of wheat varieties. The method provided by the invention can be used for identifying the drought resistance of the wheat varieties and breeding new drought-resistant and water-saving varieties, and plays an important role in guaranteeing grain safety and meeting ever-increasing material requirements of people.

The invention relates to an application test method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining a test parameter according to client information when a test target application is triggered; determining a corresponding application test strategy according to the test parameters; and testing the target application according to the application test strategy. Through the method, tAhe client does not need to depend on a server as a network center to issue the test strategy, the application test strategy can be automatically determined to automatically execute the test, the real-time performance is relatively high, and bandwidth resource consumption and transmission processing pressure caused by obtaining the application test strategy fromthe server are avoided at the same time; and especially, the influence on the test under the condition of server failure or limited network state can be avoided.

The invention provides a method and a device for quickly switching SDK network interface environments. The method comprises: defining an environment configuration variable used for storing a currentlyconfigured network interface environment, adding a text control used for displaying the currently configured network interface environment in a Demo application interface of an SDK, and monitoring along-press event of the text control; when the long-press event is monitored, popping up an environment configuration dialog box to prompt a user to select a network interface environment to be switched, and storing a result selected by the user into the environment configuration variable; and updating a main environment variable according to the value of the environment configuration variable soas to access a network interface environment address corresponding to the main environment variable when a service function of an SDK requests a network interface. Different interface environments canbe tested only by installing one sdk Demo, and the efficiency of testers and developers is effectively improved.

The invention relates to the technical field of hydraulic dam prototype safety and seepage flow monitoring, in particular to an intelligent measuring weir seepage flow monitoring integrated device and a measuring method thereof. The intelligent measuring weir seepage flow monitoring integrated device comprises a measuring weir meter; the measuring weir meter comprises a cylinder and a sensing device; a water level observation chamber is arranged in the cylinder; the water level observation chamber is provided with a floating observation point; the top of the cylinder is provided with the sensing device; the sensing device comprises a protective shell; the protective shell is provided with a threaded protective cover; a laser displacement sensor is arranged in the protective shell; a ventilation chamber I is arranged in the protective shell; the ventilation chamber is located below the laser displacement sensor; a plurality of vent holes I are formed in the protective shell; the laser displacement sensor is connected to a data processing end through a communication cable; a water passing pipe hole I is formed in the cylinder; and a water diversion pipe is arranged on the water passing pipe hole I. A water level observation point, a glass tube and the measuring weir meter on a weir are connected in series to form a communicating vessel; and a weir head of the measuring weir can be effectively measured.

The invention discloses a stiffness testing device for gas bearing, which comprises a platform, a display instrument, a loading mechanism and a portal frame; a measured assembly is arranged on the upper surface of the platform, the upper surface of the platform is an air floating surface, and the gas bearing is formed between the measured assembly and the platform; the portal frame is arranged on the platform; the loading mechanism is arranged on the portal frame and used for exerting a loading force on the measured assembly; and the display instrument is connected with the loading mechanism, and the display instrument carries out real-time display on the loading force exerted by the loading mechanism. By using the stiffness testing device for gas-lubricated bearings disclosed by the invention, the stiffness of a single gas bearing and the stiffness of combined gas bearings can be tested; and the stiffness testing device is simple in operation.

The invention relates to an automatic impact sensitivity test system. The automatic impact sensitivity test system mainly comprises an impact test apparatus, a conveying apparatus, a robot and a control unit; the impact test apparatus is used for hammer lifting test and acquiring test data, the conveying apparatus is used for storing a to-be-tested and tested initiating explosive device test samples, the robot is used for automatically fetching and storing the to-be-tested tested and tested initiating explosive device test samples, and the control unit is separately electrically connected withthe impact test apparatus, the robot and the conveying apparatus. The system is high in automation degree, high in test precision, safe and reliable.

The invention discloses a tobacco product cigarette holder cooling performance testing device and method. The device comprises a support, an electric heating piece, an air inlet pipe, a first temperature sensor, a sealing ring, a computer, a second temperature sensor, an analog quantity signal transmitter, an air outlet pipe, a hose, a flow instrument and an air pump. The device is simple in structure and accurate in measurement result, and is convenient to operate. A temperature measuring element of the temperature sensor is not in contact with the tobacco or the cigarette holder, the structure of the cigarette holder is not damaged, the influence of the structures and properties of the tobaccos and the cigarettes of different brands and models on the test is avoided, the cigarette holdercan be tested independently, and then the cooling performances of the cigarette holders of different brands and models can be tested. According to the method, the temperature change of the smoke passing through the cigarette holder is simulated by simulating the inspiration action of a smoker and measuring the smoke temperatures before the smoke enters the cigarette holder and after the smoke exits the cigarette holder, and then the cooling efficiency is obtained through the ratio of the temperature change to the smoke temperature before the smoke enters the cigarette holder, so that the cooling performance of the cigarette holder can be accurately and objectively reflected.

The invention discloses a high-speed SpaceWire optical fiber link test card capable of working offline. The optical fiber link test card comprises a main control FPGA, and an SPW interface, a storagechip and a USB interface which are respectively connected with the main control FPGA, wherein the USB interface is connected with an upper computer, the SPW interface comprises an SPW optical fiber interface and an SPW cable interface, and the main control FPGA comprises an SPW interface control module, an instruction analysis and response module, a control register module, a USB interface controlmodule, a data flow control module and a data caching module. The test card can be controlled and configured through an upper computer; the device can work in an on-line or off-line manner; accordingto the SPW optical fiber network equipment, the data receiving and transmitting function of the SPW optical fiber network equipment can be simulated, an SPW optical fiber link can be monitored and recorded, a result is uploaded to an upper computer to be displayed, and therefore an SPW optical fiber network system can be conveniently and rapidly tested and verified.

The invention relates to a dielectric test system for a micro-nano graphical thin film array. The dielectric test system comprises a test unit, used for testing dielectric properties; an insulated sample table, provided with a first sample stage electrode and a second sample stage electrode, the first sample stage electrode and the second sample stage electrode being electrically connected with the test unit respectively; a first electrode and a second electrode which are parallel to each other, the first electrode being electrically connected with the first sample stage electrode, and the second electrode being electrically connected with the second sample stage electrode; a micro-nano graphical film array, clamped between the first electrode and the second electrode; an insulated test fixture, located on the sample table. The test fixture is provided with a sample groove used for placing the first electrode, the second electrode and the micro-nano graphical film array, the test fixture is detachably connected with an insulated fastening unit, and one end of the fastening unit is located in the sample groove and used for pressurizing the first electrode.

The invention relates to a soil thermal-physical data acquisition and equipment automatic control system. The system comprises a PLC controller (3), a PLC analog module (4), a master station computer (2), a client computer (1), a sensor group (9), a valve group (7), a flow regulation valve (10), a heater (6), a power regulator (11), a water pump (8), and an alarm buzzer (5). The system can achieve multiparameter parallel data acquisition and equipment automatic control. Through software programmed by graphical programming software, the system provided by the invention realizes serial communication of the master station computer (2) and the PLC controller (3) based on free port communication technology, and completes data acquisition and equipment automatic control. The client computer (1) can achieve real-time viewing of test data and manual operation and control of equipment. The PLC controller (3) can realize on-line condition monitoring and fault diagnosis analysis, and can automatically complete PID feedback control and alarm, or achieve or manual operation and control of equipment when failure occurs.

The invention provides an analytical method for determining tellurium in high-selenium tellurium slag. According to the analytical method, a sample is dissolved in nitric acid and sulfuric acid, sulfuric acid smokes to volatilize and remove selenium in a bromide form, high-valence tellurium (VI) is quantitatively reduced into low-valence tellurium (IV) in a hydrochloric acid medium with the concentration higher than 10mol / L, the interference of chloride ions is eliminated by silver sulfate in a silver chloride precipitate form, low-valence tellurium (IV) is quantitatively oxidized into high-valence tellurium (VI) by potassium hypermanganate, excessive potassium hypermanganate is reduced by ferrous sulfate, and therefore, the content of tellurium in a sample is indirectly determined; tellurium in the high-selenium tellurium slag is analyzed and determined by carrying out indirect titration on ferrous sulfate through taking hydrochloric acid as a reducing agent and a complexing agent and potassium hypermanganate as an oxidizing agent, so that the predicament that tellurium in the high-selenium tellurium slag is difficultly and accurately determined in a recovery process is solved. The method has the advantages of good separation effect, high recovery rate, high accuracy, and the like.

The invention discloses a high-temperature testing device and method for an integrated chip, and the method comprises the steps: inputting a heating current to an idle pin of a to-be-tested chip, so as to improve the testing temperature of the to-be-tested chip; determining whether the test temperature of the to-be-tested chip reaches a target temperature; and when the test temperature of the to-be-tested chip reaches the target temperature, performing parameter or performance test on the to-be-tested chip by using the test machine. The high-temperature test of the integrated chip can be realized on a general test board at normal temperature, the requirement on equipment is low, and the operation is simple.

The invention discloses a method and a device for generating a transceiving switching control signal supporting multi-T / R component testing, including a T / R component state controller, and the T / R component state controller is respectively connected with a plurality of digital T / R components to be tested. The components are connected, the T / R component state controller is connected to the digital oscilloscope through the transceiver switching line, and a plurality of digital T / R components to be tested are respectively connected to the digital oscilloscope through the switch network; the T / R component state controller includes a transceiver switch unit, and the transceiver switching unit is used to send a synchronous signal to the digital oscilloscope when the state of the digital T / R component to be tested changes. The invention only needs one output port of the control signal for transmitting and receiving switching, and can satisfy the test of the switching time of transmitting and receiving of multiple components. The output of the transceiver switching control signal of the present invention can be strictly synchronized with the transition of the transceiver state of each component.

The invention relates to an integrated support for RCS testing of a large-mass low-scattering target and its application. The integrated support is made of wood with the following properties: the air-dry density is (100‑250) kg / m 3 ; Air-dry hardness is (400-800) JH James hardness; moisture content is 8%-15%; and relative dielectric constant is not more than 1.05. Wood with specific properties (air-dry density of (100-250) kg / m 3 Air-dry hardness is (400-800) JH Jen's hardness; moisture content is 8%-15%; and relative dielectric constant is not more than 1.05) as raw material processing support, the support that adopts above-mentioned wood as material to make has more than foam support. Higher hardness and rigidity, higher dimensional stability than foam brackets, and much smaller stress deformation than foam brackets, suitable for high-frequency RCS tests that are sensitive to subtle deformations such as Ku-band, K-band, and Ka-band.