42results about How to "Guaranteed test reliability" patented technology

The invention relates to a vibration table detection instrument field. In order to overcome the defects of the prior art, a signal processing approach is designed to allow a virtue instrument to be applied to the measurement field and an instrument suitable for measurement is designed accordingly on the basis of the signal processing approach. More particularly, the invention relates to a virtual vibration table detecting signal processing method and the instrument. The method comprises the processes: (1) the acceleration value of the vibration table is collected and converted into electric signals; (2) the signal is conditioned by a signal conditioning instrument; (3) the conditioned signal is collected by a data collecting card and transmitted to a computer; (4) the signal is preprocessed by the computer; (5) the preprocessed signal is discrete Fourier transformed and digital signal frequency domain filtered; (6) in the end, a speed component is output after the signal is integrated for one time; a displacement component is output after the signal is integrated for two times. The detection instrument comprises an acceleration sensor, a signal conditioning instrument, a data collecting card and a computer.

The invention provides intelligent power failure testing method and system. The intelligent power failure testing method and system drive a weak-current control module and a strong-current control module to be in order power failure and power on via a control end according to parameter setting and controllable output of data of equipment to be tested. Therefore, full-automatic intelligent power failure testing is realized, and the intelligent power failure testing method and system have the advantages of high efficiency, labor cost saving and higher safety. Besides, testing demands of higher requirements for safety coefficient of strong current types can be met. Products can meet various testing demands of equipment, and testing cost is reduced. The intelligent power failure testing method and system can be more adaptive to realize remote control and more convenient to manage and testing reliability is guaranteed by real-time monitoring.

The invention relates to a method and a device for sampling a produced fluid of an oil reservoir for microbial flooding. The technical scheme comprises the following steps of: (1) test and control of the temperature and pressure of the oil reservoir; (2) anaerobic treatment for the sampling device; (3) high-temperature and high-pressure separation of oil, gas and water; (4) anaerobic and high-pressure sampling of the oil, the gas and the water; (5) on-line test of oil, gas and water samples; and (6) processing and remote transmission of oil, gas and water test results. The invention has the advantages of solving the problem of the sampling of oil, gas and water mixtures under high-temperature, high-voltage and anaerobic conditions, ensuring that materials cannot diffuse on the spot during the sampling so as to protect on-site environment, ensuring that recovered crude oil and gas can be effectively utilized, ensuring the accuracy and reliability of parameter testing of the produced fluid of the oil reservoir of the microbial flooding, improving the accuracy of microbial community structures by over 30 percent and the accuracy of oxidation-reduction potential by over 40 percent, and providing a reliable theoretical basis for the ecological regulation and control of the oil reservoir of the microbial blooding.

The invention discloses a mainboard voice frequency circuit testing device. The mainboard voice frequency circuit testing device is characterized by comprising an integrated testing system, a noise reduction box, a loudspeaker, a voice-operated switch, a photoresistor and a buzzer, wherein the voice-operated switch comprises a microphone and an LED display lamp which are electrically connected with each other; the photoresistor and the buzzer are electrically connected with the integrated testing system; the integrated testing system is used for supplying power to the buzzer and receiving feedback signals of the photoresistor; the loudspeaker and the microphone are arranged in the noise reduction box; the photoresistor and the LED display lamp are correspondingly arranged. The mainboard voice frequency circuit testing device can directly simulate work of a voice frequency circuit; the signal output end of the mainboard voice frequency circuit is connected with a voice frequency device; when the voice frequency circuit works, whether the voice frequency circuit is normal or not can be judged by visually detecting whether the voice frequency device produces a sound or not, so the mainboard voice frequency circuit testing device has the reliability of traditional human ear testing and judgment and can also achieve high-efficiency automatic testing.

A parallel multi-loop power transmission line zero sequence parameter positive sequence on-line testing method is disclosed and belongs to the field of parallel multi-loop line coupling parameter testing. According to the method, steady-state data is used for testing positive sequence impedance and admittance of a loop line being tested, a ratio of impedance of parallel multi-loop lines and a ratio of admittance of the parallel multi-loop lines are calculated in the same environment, own impedance (own admittance) Z<->ii and mutual impedance (mutual admittance) Z<->ij are estimated and are finally presented in a formula defined in the description, errors can be effectively suppressed, and zero sequence coupled impedance and admittance of the parallel multi-loop power transmission lines can be tested indirectly on line. Via use of the testing method put forward in the invention, special-purpose zero sequence operation is not required, normal system operation cannot be affected, specifically effects exerted on an impedance testing method by soil resistivity is taken into account, fault tolerance capability and anti-interference capability of the method can be guaranteed, a parallel multi-loop power transmission line parameter testing method can be simplified, and testing efficiency, flexibility and operability can be improved.

The invention provides a sensing device for testing the weight of contents in a washing bucket of a washing machine, which realizes stable and accurate detection. The sensing device comprises hanging hooks A connected to upper portion corners of the inner wall of an outer tank body of a washing machine and hanging hooks B connected to the lower portion of the outer wall of a washing bucket of the washing machine; the hanging hooks B and the hanging hooks A correspond to each other longitudinally; a lifting rod is hung on and connected to each hanging hook A; each hanging hook B is connected with a shock absorber via the hanging and connection of an outer shell of the shock absorber; the lower end of each lifting rod extends into the outer shell of the corresponding shock absorber; a support body is arranged in each outer shell; the lower end of each lifting rod is connected with the corresponding support body; a shock absorption spring is arranged between each support body and the upper top of the corresponding outer shell; the bottom of each outer shell is provided with a spring A and the upper end of the spring A is pressed against a magnetic iron core; a spring B is pressed against each magnetic iron core and the corresponding support body therebetween; the periphery of the lower portion of each outer shell, corresponding to the matching magnetic iron core, is fixedly sleeved with an inductance coil; the elastic coefficient of the springs A and the elastic coefficient of the springs B are not equal. The sensing device is used for detection of the weight of contents in a washing bucket of a washing machine.

The invention discloses silver paste with high conductivity at 80 DEG C and a preparation method thereof, and belongs to the technical field of conductive paste. The invention provides the silver paste with high conductivity under an ultralow-temperature curing condition, the silver paste can be cured under the low-temperature condition of 80 DEG C and has excellent conductivity, the resistivity of the silver paste is less than 2.5*10<-7> ohm.m, and the silver paste can be used for manufacturing a 5G mobile phone terminal antenna. The adhesive force on the surfaces of plastic, metal, printingink, glass, ceramic and other base materials is excellent, and the adhesive force reaches 5B after high-temperature boiling (100 DEG C, 30 min). Meanwhile, the reliability test requirements of a conventional portable terminal under the conditions of high temperature, high humidity, cold and hot impact, salt mist, ultraviolet irradiation and the like can be met. The paste of the silver paste can beused for manufacturing circuit patterns on a plane and a curved surface through pad printing or silk-screen printing construction.

The present invention relates to the field of vibrating table detection equipment, the purpose is to overcome the defects in the prior art, design a signal processing method so that the virtual instrument can be applied to the field of measurement, and correspondingly design a kind of equipment suitable for measurement on this basis, More specifically, it is a method and equipment for processing detection signals of a virtual vibrating table. The method comprises the following steps: ①acquiring the acceleration of the vibrating table through a sensor and converting it into an electrical signal; ②conditioning the signal with a signal conditioning device; ③collecting the conditioned signal and sending it to the computer through a data acquisition card; ④transforming the signal through the computer The signal is preprocessed; ⑤ Discrete Fourier transform and digital signal frequency domain filtering are performed on the preprocessed signal; ⑥ Finally, the velocity component is output through one integral, and the displacement component is output through two integrals. Its structure includes acceleration sensor, signal conditioning equipment, data acquisition card and computer.

The invention discloses a passenger vehicle GPF reliability test method, which comprises the following steps: a temperature sensor being installed on a vehicle GPF, wherein the GPF temperature is monitored, the weight of particles captured by the GPF is measured, and a data acquisition system is configured to perform whole-process monitoring on the state in the vehicle test process; compiling a complete assessment condition and mileage distribution; specifically decomposing the assessment working condition and mileage distribution into a vehicle driving and operation scheme according to a testfield road to form a voice prompt file, and performing vehicle driving and related operation by a driver according to the voice prompt file in the test process to ensure that the vehicle runs according to a specified working condition. and in the test process, after each working condition is finished, the GPF state and the vehicle emission result of the vehicle are checked, and the GPF reliability is judged. According to the method, the influence of vehicle driving environment factors on the GPF reliability is accurately reduced, so that the test result is more accurate, and the GPF reliability can be truly and comprehensively verified.

The embodiment of the invention provides a silicon wafer edge roughness detection jig and a detection method. The silicon wafer edge roughness detection jig comprises a base and a clamping component; the base isused for bearing a silicon wafer sample, the base comprises a horizontal bottom surface and an inclined bearing surface, a preset included angle alpha is formed between the horizontal bottom surface and the inclined bearing surface, and alpha is larger than 0 and smaller than or equal to 90 degrees; and the clamping component is used for clamping and fixing the silicon wafer sample, and the clamping component is arranged on the inclined bearing surface. According to the silicon wafer edge roughness detection jig and the detection method provided by the embodiment of the invention, the roughness and the surface appearance of the edge of a silicon wafer can be evaluated, the measurement error can be reduced, and the test reliability can be ensured.

The invention provides a power module VBS working current test circuit and test method. The power module VBS working current test circuit comprises a power supply, a control chip, a first upper bridge arm, a second upper bridge arm, a third upper bridge arm, a first lower bridge arm, a second lower bridge arm, a third lower bridge arm, a signal generator, a first relay, a second relay, a third relay and a plurality of control power supplies. The input end of the first relay is used for inputting U-phase working current, and the output end of the first relay is connected with the source electrode of the first upper bridge arm; the input end of the second relay is used for inputting V-phase working current, and the output end of the second relay is connected with the source electrode of the second upper bridge arm; the input end of the third relay is used for inputting W-phase working current, and the output end of the third relay is connected with the source electrode of the third upper bridge arm; the testing function of the working current is realized by controlling the first relay, the second relay and the third relay. The method is high in test accuracy and good in test reliability.

The invention discloses a variable-range ultrasonic flow testing system and a variable-range ultrasonic flow testing method. The system comprises an underground ultrasonic signal receiving and transmitting device and a ground control terminal, the ultrasonic signal receiving and transmitting device comprises a first flow guide pipe and a second flow guide pipe which are movably connected in a sealed mode, a first ultrasonic transducer and a second ultrasonic transducer which are arranged on the first flow guide pipe and the second flow guide pipe respectively, a screw rod and a transmission mechanism. A first protrusion and a second protrusion are arranged on the outer side of the first flow guide pipe and the outer side of the second flow guide pipe respectively, the first protrusion is provided with a first through hole allowing the screw to penetrate through, and the second through hole of the second protrusion is provided with internal threads matched with threads of the screw. The control terminal is used for determining the flow according to the echo signals collected by the ultrasonic signal receiving and transmitting device, and if the flow is not within the predicted flow interval, the transmission mechanism is informed to drive the screw to rotate correspondingly. The system can adapt to different flow tests by automatically changing the axial distance between the two ultrasonic transducers under the condition that the diameter of the flow passage is not changed.

The invention discloses a method for testing the reliability of the GPF of a passenger car, comprising the following steps: installing a temperature sensor on the GPF of the vehicle, monitoring the temperature of the GPF and measuring the weight of particles captured by the GPF, and configuring a data acquisition system to monitor the test process of the vehicle The state in the vehicle is monitored throughout the process; it is compiled into a complete assessment working condition and mileage distribution; the assessment working condition and mileage distribution are specifically decomposed into the vehicle driving and operation plan according to the test track road, and a voice prompt file is formed. During the test, the driver Carry out vehicle driving and related operations according to the voice prompt file to ensure that the vehicle runs according to the specified working conditions; check the vehicle GPF status and vehicle emission results after each working condition in the test process, and judge the GPF reliability. The invention accurately restores the influence of vehicle running environment factors on the GPF reliability, makes the test result more accurate, and can truly and comprehensively verify the GPF reliability.

The invention discloses a wide-range-ratio ultrasonic flow testing system and a testing method. The testing system comprises an underground ultrasonic signal receiving and transmitting device and a ground control terminal. The ultrasonic signal receiving and transmitting device comprises a test flow guide pipe, and a first ultrasonic transducer and a second ultrasonic transducer which are arranged on the test flow guide pipe according to a certain axial distance; the control terminal is used for determining the time difference between the forward flow and the reverse flow according to a first echo signal collected by the first ultrasonic transducer and a second echo signal collected by the second ultrasonic transducer in the same test period, judging whether the excitation signal periods of the first ultrasonic transducer and the second ultrasonic transducer are both larger than the time difference between the forward flow and the reverse flow or not, and if not, determining the time difference between the forward flow and the reverse flow. The excitation frequency of the corresponding ultrasonic transducer is adjusted, so that the excitation signal period is larger than the forward and reverse current time difference. The system can meet the requirement of a large-span flow test range by adjusting the excitation frequency of the ultrasonic transducer under the condition that the structural size of the test flow guide pipe is not changed, and the measuring range ratio of flow test is greatly expanded.

The embodiment of the present invention discloses a radio frequency channel calibration method. The first calibration sequence is respectively transmitted through each radio frequency channel in the first communication connection, and the second calibration sequence corresponding to each radio frequency channel received after each transmission is obtained; according to the first calibration sequence and the second calibration sequence sequence, using a preset calculation rule to determine the difference value of the signal characteristic parameter of each radio frequency channel; according to the difference value of the signal characteristic parameter, each radio frequency channel is compensated. The embodiment of the present invention also discloses a radio frequency channel correction device, a storage medium and an information processing device.

The invention discloses an insulated wire withstand voltage test method and a test tool thereof, and relates to the technical field of insulating layer breakdown voltage test. An insulated wire sample is folded and twisted into a twisted wire pair, then the insulated wire sample is tightly wound on a conductive column, insulating layers at the two ends of the insulated wire sample are removed to make conductor sections exposed out of the ends of the insulated wire sample, and test voltage is applied to the conductor sections and the conductive column of the insulated wire sample so as to measure the voltage resistance and value of the insulating layer of the insulated wire sample. The twisted insulated wire sample is wound on the conductive column, so that the wire rod is more compact, personal errors are reduced, and the test effectiveness and reliability are improved. The insulated wire withstand voltage test tool is used for implementing the method, the conductive column is erected on the first positioning piece and the second positioning piece, and the first conductive body and the second conductive body are electrically connected with the conductive column and the insulated wire sample, so that the test efficiency is improved and the operation process in the test process is simplified on the premise of improving the effectiveness of the test result.

The invention provides intelligent power failure testing method and system. The intelligent power failure testing method and system drive a weak-current control module and a strong-current control module to be in order power failure and power on via a control end according to parameter setting and controllable output of data of equipment to be tested. Therefore, full-automatic intelligent power failure testing is realized, and the intelligent power failure testing method and system have the advantages of high efficiency, labor cost saving and higher safety. Besides, testing demands of higher requirements for safety coefficient of strong current types can be met. Products can meet various testing demands of equipment, and testing cost is reduced. The intelligent power failure testing method and system can be more adaptive to realize remote control and more convenient to manage and testing reliability is guaranteed by real-time monitoring.

The invention discloses an automatic test method of a network element management unit and a system, and relates to the field of test technology of network element management units. The method comprises steps of modifying key field of a PDU in an EMU function configuration block for many times and generating corresponding EMU message; comparing all the EMU message so as to obtain deviation values of the modified and changed key field in the PDU in the EMU message, and positioning the key field according to the deviation values; according to types of the EMU function configuration block, determining the unique value range and traversal algorithm, and determining one unique value via the traversal of the traversal algorithm in the value range of the unique value; and successively testing each of the unique values based on the traversal of the traversal algorithm until all unique values are traversed, and then finishing the test. According to the invention, automatic EMU test can be achieved; coverage rate of the test is high; test time is short; test efficiency is high; and manpower cost is low.

The invention discloses an automatic test method of a network element management unit and a system, and relates to the field of test technology of network element management units. The method comprises steps of modifying key field of a PDU in an EMU function configuration block for many times and generating corresponding EMU message; comparing all the EMU message so as to obtain deviation values of the modified and changed key field in the PDU in the EMU message, and positioning the key field according to the deviation values; according to types of the EMU function configuration block, determining the unique value range and traversal algorithm, and determining one unique value via the traversal of the traversal algorithm in the value range of the unique value; and successively testing each of the unique values based on the traversal of the traversal algorithm until all unique values are traversed, and then finishing the test. According to the invention, automatic EMU test can be achieved; coverage rate of the test is high; test time is short; test efficiency is high; and manpower cost is low.

This invention relates to an impact testing device with an adjustable natural frequency, comprising a vibration table, a base mounted on the vibration table, one or more signal amplifiers mounted on the base, and a test product mounted on the topmost signal amplifier. The signal amplifiers are rigidly connected to each other and to the base. Each signal amplifier is configured to adjust its natural frequency to amplify the impact signal magnitude through a coupling effect when receiving vibration excitation. This invention achieves a larger half-sine impact acceleration level using an existing electrically driven vibration table, meeting standard testing requirements without the need for selecting and purchasing a new impact table, thus avoiding testing costs associated with additional equipment and ensuring test reliability.

The invention discloses an underground flow testing system, method and device. The testing system comprises an underground flow testing device and a ground control terminal. The underground flow testing device is used for collecting and sending an echo signal required for determining a first flow by using a time difference method and an echo signal required for determining a second flow by using a frequency difference method to the control terminal in each testing period; the control terminal is used for determining the first flow and the second flow, determining the solid particle content level according to the relative size of the second flow and a set flow threshold value and the difference amplitude of the first flow and the second flow for the same test period, determining the weight of the first flow and the weight of the second flow, obtaining the weighted average flow, and sending the weighted average flow to the server. The fluid flow is used as the corresponding time. According to the system, the adaptive capacity of underground flow testing to the purity of fluid media can be improved, and the underground flow testing precision and reliability are guaranteed.

The invention discloses a child and mother aircraft communication method and system based on a 1553B bus, and relates to the technical field of aircraft control systems. The method disclosed by the invention comprises the steps of: establishing a mother aircraft bus sub-system and a child aircraft bus sub-system according to a 1553B bus protocol; initializing a mother aircraft computer to a BC node of the mother aircraft bus sub-system, and initializing other standalones of a mother aircraft to RT nodes or BM nodes of the mother aircraft bus sub-system; initializing a child aircraft computer to a BC node of the child aircraft bus sub-system, and simultaneously, taking the child aircraft computer as the RT node of the mother aircraft bus sub-system; and initializing other standalones of a child aircraft to RT nodes or BM nodes of the child aircraft bus sub-system. Only a set of mother aircraft bus sub-system is arranged; one or more sets of child aircraft bus sub-systems are arranged, and hooked onto the mother aircraft bus sub-system at the same time; therefore, a star topological network is formed; and thus, the ground test reliability is ensured.

The invention discloses a manual test base with an upper slider structure, comprising a test base and an upper cover, wherein the upper cover is hinged to one side of the test base and can be flippedand pressed with the test base, a floating plate structure is disposed on the test base, a chip slot is formed in the floating plate structure, a slider is arranged in the middle of the upper cover through a chute on a side, a pressure plate is rotatably disposed in the middle of the slider through a pressure plate groove, the pressure plate is opposite to the chip slot when the upper cover is closed, a stop tongue is disposed in the pressure plate groove such that the pressure plate is inclined, and a return spring and an adjusting screw are symmetrically disposed on the upper and lower sidesof the slider. The manual test base has a simple structure; by using a slider structure on the upper cover, the pressure plate and a chip do not slide relative to each other when the pressure plate is rotated to press the chip; and the pressure plate is inclined to ensure that the contact planes of the pressure plate and the chip are nearly parallel, thereby avoiding local extrusion to the chip and ensuring the test reliability.

The invention relates to a form and position error self-adaptive device of a planetary roller screw life test bench, a spherical hinge assembly is fixedly connected with a center frame, and a ball head in the spherical hinge assembly can freely rotate without translation relative to the center frame; the ball head is connected with a left nut sleeve through a locking nut, a cross-shaped sliding block is installed between the left nut sleeve and a bearing cover, the left nut sleeve and a right nut sleeve are fixedly connected through a screw to form a nut sleeve assembly, and a nut of the planetary roller lead screw to be tested is installed in a cavity in the nut sleeve assembly. A gap is reserved between the outer circle of the nut and the outer circle of the nut flange and the nut sleeve assembly, the nut is fixed on the nut sleeve assembly through a pin penetrating through the nut flange, a gap is also reserved between the pin and a screw hole of the nut flange, and steel balls are evenly distributed in the two ends of the nut sleeve assembly to clamp the nut flange. And the nut has translational degrees of freedom in two radial directions relative to the nut sleeve assembly, and has four degrees of freedom except the degree of freedom of rotation around the axis of the lead screw and the degree of freedom of movement in the axis direction of the lead screw relative to the center frame.

The utility model provides a kind of testing device, testing device includes: infusion structure, with liquid inlet part, infusion cavity and liquid outlet part, liquid inlet part is communicated with liquid outlet part by infusion cavity, liquid inlet part is used to communicate with external device, infusion cavity is used to accommodate liquid, liquid outlet part is used to communicate with cleaning piece, infusion structure includes multiple pipelines, multiple pipelines are sequentially arranged along the flow direction of liquid;Boost structure is arranged between two adjacent pipelines, to boost liquid;Protective structure is arranged on liquid outlet part, protective structure has protective cavity, protective cavity is used to accommodate cleaning piece, and the cleaning hole of cleaning piece is used to clean protective cavity;Wherein, at least part of protective structure is made of transparent material, and it is oppositely arranged with cleaning piece.The utility model effectively solves the problem of lower test efficiency of existing technology in tank washer.

The invention discloses a 4M 1553 bus transceiver system-level test system and a 4M 1553 bus transceiver system-level test method. The 4M 1553 bus transceiver system-level test system is composed of aresistor network unit, a first transformer unit and a second transformer unit. The resistance network unit is used for adjusting the output amplitude of the output signal end of the transceiver. Thetransformer unit is combined to realize stable transmission of signals; tests of transceivers in all application environments of 4M 1553 bus communication can be covered; the 4M 1553 bus transceiver test system is simple in circuit structure, good in integration level and accurate in test result, compared with a test method for building a communication network, the development cost and period of the test system can be reduced to a great extent, test verification is comprehensive and reliable, and test reliability guarantee is provided for application and development of the 4M 1553 bus transceiver.

The invention provides a sensing device for testing the weight of contents in a washing bucket of a washing machine, which realizes stable and accurate detection. The sensing device comprises hanging hooks A connected to upper portion corners of the inner wall of an outer tank body of a washing machine and hanging hooks B connected to the lower portion of the outer wall of a washing bucket of the washing machine; the hanging hooks B and the hanging hooks A correspond to each other longitudinally; a lifting rod is hung on and connected to each hanging hook A; each hanging hook B is connected with a shock absorber via the hanging and connection of an outer shell of the shock absorber; the lower end of each lifting rod extends into the outer shell of the corresponding shock absorber; a support body is arranged in each outer shell; the lower end of each lifting rod is connected with the corresponding support body; a shock absorption spring is arranged between each support body and the upper top of the corresponding outer shell; the bottom of each outer shell is provided with a spring A and the upper end of the spring A is pressed against a magnetic iron core; a spring B is pressed against each magnetic iron core and the corresponding support body therebetween; the periphery of the lower portion of each outer shell, corresponding to the matching magnetic iron core, is fixedly sleeved with an inductance coil; the elastic coefficient of the springs A and the elastic coefficient of the springs B are not equal. The sensing device is used for detection of the weight of contents in a washing bucket of a washing machine.