2594results about How to "Meet testing needs" patented technology

The invention discloses an automatic test system for a digital integrated circuit. The automatic test system is composed of a tested chip, a test interface board, an integration module, a test module, a control module, a display module and an upper computer. The control module is connected with the upper computer. The test module is connected with the control module. A base pin of the tested chip is connected with the test interface board which is connected with the test module. The integration module is connected with the test module and the upper computer. The display module is connected with the control module and displays a waveform after final comparison by the aid of upper computer software, so that the automatic test for functions and performance of the chip is completed. The automatic test system is low in cost, easy to implement under laboratory conditions, easy and convenient to operate, high in development rate and capable of meeting the test requirements of small-batch products. According to the system, through an automatic test, the problem that operation is complex due to the fact that the number of test items is large in a manual test is solved, the test efficiency is enhanced, a misjudgment caused by artificial factors in the manual test is avoided, and therefore test quality is improved.

The invention discloses a protective system for lithium ion cells. The system comprises a signal acquisition unit and a control unit, wherein the signal acquisition unit comprises a protective chip and a voltage detection unit, and the control unit comprises a singlechip and a switch unit. The voltage detection unit is connected with a lithium iron cell. The protective chip detects the voltage of the lithium ion cell through the voltage detection unit. The singlechip reads a voltage value detected by the protective chip through a communication interface of the protective chip and switches off and on a charging and discharging circuit through a control switch unit according to the set range of the voltage value. The system adopts a form of the protective chip and the singlechip to protect the lithium ion cell, enlarges a detection range through the protection chip, provides flexible protection parameter set through the singlechip, and is a protective system applicable to various lithium ion cells.

The present invention relates to a dynamic scene information recording and simulation playback method and a dynamic scene information recording and simulation playback device. The method includes thefollowing steps that: sensor data are collected, local coordinate-to-global coordinate transformation is performed on the sensor data, so that absolute position information is generated; a model and ascene are established according to the absolute position information, so that the restoration of a road environment is realized, global coordinate-to-local coordinate transformation is performed on the sensor data, so that relative position information can be generated, the driving process of a vehicle is simulated based on the relative position information, so that the restoration of the drivingscene of a user can be realized; and the vehicle is planned and controlled according to planning control information and the relative location information, so that an improved planning control algorithm can be verified. The device comprises a preprocessing module, a simulation module and a planning control module. With the dynamic scene information recording and simulation playback method and device of the invention adopted, a fixed regression test scene can be formed; the scene is not only stable, but also can reproduce a current fault; and the reproduction of the fault and the restoration of the scene are not affected even through the planning control algorithm changes.

The invention relates to a data acquisition unit for on-line detection of transformer partial discharge and a detection method thereof. The data acquisition unit detects and acquires the transformer partial discharge signals and transmits the signals to a host computer for processing via a transformer partial discharge signal amplification module, a high speed data acquisition module and a remote communication module. In the invention, proper program control filtering and amplifying circuit are designed and manufactured, the precision of signals is high, the design and manufacturing of a high-speed and large-capacity multiple-channel synchronous data acquisition module circuit are finished, the requirement of detecting external multi-channel circuits can be met, and the adaptability is good; the invention is characterized by rapid sampling rate and large storage capacity, etc.; the whole acquisition system can be divided into a plurality of channels, the maximum sampling rate of each channel can reach 20MHz and the maximum storage depth can reach 512 K words; the data acquisition unit finishes digitization of partial discharge signals and upload the signals for processing, thus effectively reducing the distortion and aberration of the partial discharge signals during transmission, meanwhile, the data is transmitted by adopting the GPRS wireless communication technology, which reduces the cost and facilitates the construction and installation.

The invention discloses a binocular vision target surface 3D detection system based on a unmanned aerial vehicle. The system comprises the unmanned aerial vehicle, a binocular vision system, a computer system and remote control equipment. A detection method comprises the following steps of using a binocular vision system carried by the unmanned aerial vehicle to traverse and collect the image dataof a target surface; using images collected by the binocular vision system to match and acquire the parallax information of the left and right images through characteristic extraction; combining parameters inside and outside a camera to acquire the three-dimensional coordinates of the midpoints of the images so as to obtain target local three-dimensional point cloud; and through carrying out characteristic extraction and matching on the three-dimensional point cloud of the adjacent images of the left camera, acquiring a transformation relation between two three-dimensional point cloud coordinate systems, then realizing the registration in pairs of the three-dimensional point cloud, finally acquiring the three-dimensional point cloud data of a whole target surface, and comparing the original three-dimensional data of the target surface so as to realize the detection of a target. The system is applied to the surface detection of a large-scale target, such as large-scale industrial equipment and the like, the operation is simple and efficiency is high.

The invention relates to a method for manufacturing a digital PCR (polymerase chain reaction) chip based on a mineral-oil saturated PDMS (polydimethylsiloxane) material. The method is characterized in that the digital PCR chip based on PDMS is prepared from a PDMS monomer of a certain amount of mineral oil (liquid paraffin) and comprises an emulsion droplet generation structure and an emulsion droplet collection structure. After the emulsion droplets are made and collected on the same chip, the emulsion droplets are subjected to PCR amplification on the same chip. The phagocytosis to the oil phase in the digital PCR system by the PDMS of the chip can be avoided, the emulsion droplets can be kept stable during PCR, and the stability of the PCR can be guaranteed. In addition, compared with the existing technology of the digital PCR chip, the method provided by the invention is low in cost, is convenient to operate and has a very wide application prospect.

The invention relates to environment simulation laboratory equipment, especially to a multifunctional environment simulation cabin comprising a cabin body, a PLC control system installed at the outer wall of the cabin body, an air circulation and purification sub system for air circulation and purification inside the cabin body, a new air conveying sub system for inputting new air into the cabin body, a target gas concentration control sub system, and a pressure-control exhaust system. The PLC control system is connected with and controls a plurality of function sub systems by signals, thereby realizing simulation of the environment with different temperatures and humidity and target gas concentrations inside the cabin. According to the invention, an external circulating air hose is provided with different purification device interfaces to installed tested purification devices, so that dynamic testing of tested purifiers on the circulating air hose as well as testing of static environments with different monitoring gas concentrations can be simulated. Testing demands of various purifying devices like an adsorption type purifying device, a photocatalysis type purifying device, or a plasma-technology-based purifying device can be satisfied.

The invention relates to a frequency change system group delay test method which comprises the following steps of: generating an FM (Frequency Modulation) carrier signal of which the carrier frequency is the center frequency of a working frequency band of a frequency change system by a signal source; then dividing the signal into two paths, wherein one path of signal is input to the frequency change system by an attenuator and used as the input of a first A/D (Analog-to-Digital) converter by the attenuator after being output by the frequency change system, the other path of signal is used as the input of a second A/D converter, and the two A/D converters synchronously sample data by using the same reference clock; then respectively carrying out Hilbert transformation, digital down conversion and non-coherent demodulation on two paths of A/D sampled data; and carrying out digital phase comparison on the two paths of demodulated base band signals to obtain a group delay value of the frequency change system. A group delay test result of all frequency points of the frequency change system in the frequency band can be obtained by changing the carrier frequency of the FM carrier signal in the working bandwidth of the frequency change system and repeating the processing; and the measuring precision depends on system heat noise, the correcting precision of a test cable and A/D sampling resolution.

The invention discloses a microcomputer controlled electro-hydraulic servo multi-functional pressure-shear test machine which belongs to the field of material test machines, and mainly solves the precision, speed and stress value problems of basic material performance test in the bridge construction. The machine comprises a main machine part, a hydraulic system, a control system and a specimen transportation car. The frame of the main machine comprises a stand, a screw rod, a movable cross beam, the frame and the like; the main machine is provided with a box-shaped pressure plate, a vertical servo loading oil cylinder, a horizontal shear servo loading oil cylinder, an angle servo loading oil cylinder, a synchronous floating servo oil cylinder, a cross beam lifting mechanism and a test device. The hydraulic system comprises a servo oil source, a hydraulic oil distributor and a remote pressure control system; the control system comprises an industrial personal computer, a conversion board, an electro-hydraulic servo control cabinet and a measuring instrument. The microcomputer controlled electro-hydraulic servo multi-functional pressure-shear test machine is used for the mechanical performance test to the middle plate-type and pot-type rubber brackets and spherical brackets in the bridge construction, such as single-pressure, pressure-shear and angle tests, and can take single-pressure test to metal and other non-metal and concrete components.

The invention discloses a full-automatic immunity analyzer and a detection method thereof for the technical field of immunity analyzers of biological samples, mainly solving the technical problems of poor reliability, unstable and inaccurate obtainment of the consumption of working liquid, and no guarantee of washing quality when a liquid level resistor induction principle of a full-automatic immunity analyzer in the prior art is used for detecting liquid storage content. The full-automatic immunity analyzer is characterized in that: a liquid storage component comprises a cleaning solution bottle, a washing liquid A bottle, and a washing liquid B bottle which are independent of one another, the bottoms of the cleaning solution bottle, the washing liquid A bottle, and the washing liquid B bottle are respectively provided with an on-line weighing sensor for monitoring the weight of the working liquid in each bottle, providing the usage amount and margin signals of the working liquid of each bottle to a control system. According to the invention, the storage amount and usage amount of the working liquids in the liquid storage component can be accurately monitored in real time, the reliability of the control is good, the quality of washing can be guaranteed, and the fault of a fluid path system can be discovered in time.

The invention relates to a method for testing strata of a horizontal well, which is applied to the test of the strata of a horizontal well during casing well completion. The method comprises the steps of: setting parameters for a voltage-controlled electric multi-stream test valve, and putting the test valve into a casing of an oil well; performing the settlement of an annulus hydrostatic packer;performing annulus pressurization on an oil jacket by utilizing a pumper on the ground to realize well opening and well closing; completing sampling operation during the last closing operation, and simultaneously, recording the variation conditions of pressure and temperature in the overall process of construction by a pressure gauge in a pressure gauge support cylinder of the voltage-controlled electric multi-stream test valve; opening a reverse circulation valve by utilizing an external-force punch, deblocking the annulus hydrostatic packer by lifting a pipe column upwards to lift a stratumtesting pipe column and a mating tool safely. The method has the advantages that in a process pipe column for testing the strata of the horizontal well, the settlement of the packer is performed by utilizing the pressure of a casing annulus hydrostatic column, so that other stratum sections and well completion liquid are isolated from a test layer; and ground pressure pulse signals control the voltage-controlled electric multi-stream test valve to realize the well opening and well closing operation.

The invention relates to a system and a method for detecting detectivity of a space optical system. The system comprises a light source system, an alignment system, a star point unit, a spectrum acquisition unit, a master control system, a data processing unit and a display unit, wherein the alignment system and the spectrum acquisition unit are arranged on an emitting optical path of the light source respectively; the star point unit is arranged between the light source system and the alignment system, and lies on a focal plane of the light source system; a space optical system to be detected is arranged on the emitting optical path behind the alignment system; the data processing unit is respectively connected with the display unit and the space optical system to be detected; and the master control system is respectively connected with the space optical system to be detected, the light source system and the spectrum acquisition system. The invention provides a system and a method for detecting detectivity of a space optical system, which are capable of reliably and accurately acquiring detection data and are convenient for operation.

The invention discloses a method for fast analyzing pesticide residue in fruits and vegetables, which is implemented by weighing a sample, adding anhydrous sodium acetate and anhydrous magnesium sulfate, adding acetic acid acetonitrile solution, centrifugating after shaking and extracting, putting the centrifugated acetonitrile extract into a centrifugating tube filled with mixed filler, shaking, centrifugating, sucking the cleaning fluid, concentrating and evaporating to be dry, dissolving the mixed solution with the volume ratio of acetonitrile and water being 1:1, and performing UPLC/MS/MS detection. The invention uses fruits and vegetables as matrix, uses the matrix dispersion solid extraction technology to pre-treat the sample to realize fast detection on 130 types of pesticide residue such as avermectins, aldicarb, Cyromazine and the like, having the characteristics of fast and exact detection result, high efficiency and low price.

The invention relates to a preparation method of a graphene-based surface strain sensor. The method comprises the following steps: (1), preparing graphene oxide dispersion liquid; (2), spraying the graphene oxide dispersion liquid on a substrate to form a thin graphene oxide film; (3), carrying out chemical reduction or ultraviolet irradiation on the thin graphene oxide film to form a thin graphene film; (4), connecting two copper electrodes to the two ends of the thin graphene film by conducting resins and connecting an ohm gauge between the two electrodes; and (5), spraying or brushing a high molecular solution on the thin graphene film continuously to form a high-molecular latex film. Compared with the prior art, the thin graphene oxide film is prepared by spraying; reduction is carried out by using a certain means; and then the graphene-based surface strain sensor is prepared. Because the operation is simple, the cost is low, and large-scale preparation can be realized well, the preparation method can be applied to the heath monitoring of the building structure.

The application provides a testing method and device for software interface state change time, and is used for solving the problem that the software interface change time tested in the prior art is inaccurate. The method comprises the steps of: triggering the operation of changing the testing interface state, and recording the triggering time as starting time; detecting the preset change of a reference object of the testing interface, and recording the detection time as terminal time; and recording the time interval of the terminal time and the starting time as the interface state change time. According to the characteristic that the reference object changes when the testing interface state changes, the time of the software interface presented to the user is obtained, namely the true starting time of the software is obtained.

The invention provides an assembly test method and device. The assembly test method includes the steps that test cases corresponding to serial numbers of the test cases are acquired from a preset test case library according to the serial numbers of the test cases of tested assemblies, wherein the test cases comprise test case TCL scripts, test input data, test case anticipated output and test case execution configuration files; the test input data are input to the test case TCL scripts, and then configuration of the test case execution configuration files is finished; whether the test cases meet preset test conditions or not is judged according to the configured test case execution configuration files; if yes, the test input data are sent to the tested assemblies, the tested assemblies are made to execute logic processing and output a processing result according to the test input data; the processing result is compared with the test case anticipated output, and corresponding test logs are generated according to the comparison result.

The invention discloses a six-degree-of-freedom distributed semi-physical simulation method of a launch vehicle. The method comprises: S1, establishing a six-degree-of-freedom distributed semi-physical model of a launch vehicle and establishing simulation models for all modules in the model; S2, according to an input and output relationship between all modules in the six-degree-of-freedom distributed semi-physical model of a launch vehicle, erecting a six-degree-of-freedom distributed semi-physical simulation system of the launch vehicle; and S3, establishing a test flow of the six-degree-of-freedom distributed semi-physical simulation system of the launch vehicle, operating the six-degree-of-freedom distributed semi-physical simulation system of the launch vehicle, simulating six-degree-of-freedom data of flight of the launch vehicle so as to complete six-degree-of-freedom distributed semi-physical simulation of the launch vehicle. In addition, the invention also discloses a simulation system. Therefore, the motion rule and characteristics of the conveyer can be reproduced vividly and comprehensively; and the correctness, parameter coordination, interference adaptability, and flight software reliability of the control system plan can be checked.

The invention belongs to the field of biological detection, and particularly relates to a color-fluorescence dual-function immunochromatography test strip and a preparation method thereof. The test strip comprises a base plate (1). A sample addition pad (2), a marker combination pad (3), a detection pad (4) and a water absorption pad (5) are sequentially arranged on one face of the base plate (1), wherein the detection pad (4) is provided with a detection line T (41) and a quality control line C (42), and the water absorption pad (5) provides power for a capillary tube siphoning, the adjacent pads are sequentially connected in an overlapped mode, and a color-fluorescence dual-function microsphere marker probe coats the marker combination pad (3). According to the color-fluorescence dual-function immunochromatography test strip and the preparation method thereof, negative and positive attribute preliminary qualitative judgment can be performed on the detection result through naked eyes, the detection result can also be analyzed through an instrument, and accurate detection data are obtained.

The invention discloses a surface electromyographic electrode comprising a signal acquisition unit and having an amplifying function. After the acquisition unit acquires an electromyographic signal, the electromyographic signal is processed by a signal filter unit and a signal amplifying unit in turn, and an expected electromyographic signal is output from a signal output unit; the acquisition unit comprises a signal electrode, a grounding electrode and a reference electrode; the signal filter unit comprises a high-pass filter circuit; and the signal amplifying unit comprises an instrument amplifier. The electromyographic electrode has good anti-jamming capability, can accurately acquire the electromyographic signal, and can well meet the requirements of research and application on the aspect of clinical medicine.