459results about How to "Expand the scope of testing" patented technology

The invention discloses a hardware-in-the-loop test system for a whole vehicle controller for an electric vehicle and a test method. The hardware-in-the-loop test system comprises a whole electric vehicle controller, a fault injection hardware unit, an SCALEXIO, and a vehicle simulating module, a vehicle driving animation simulating module and a vehicle state operating and monitoring module in a computer. Connection and communication among the SCALEXIO, the fault injection hardware unit and the whole electric vehicle controller is achieved through a wire harness, and connection and communication between the SCALEXIO and the computer is achieved through a network line; through the corresponding SCALEXIO software in the computer, SCALEXIO channel selection is achieved, and communications of a vehicle simulating model, vehicle driving animation and vehicle state operation and monitoring interact in the computer. The hardware-in-the-loop test system can effectively save the development time and reduce the development cost of the whole vehicle controller, can achieve performance testing on the whole vehicle controller under the limit driving condition of the vehicle, can achieve systematic, integrated and automatic testing on the whole vehicle controller and generate a test report, effectively reduces the testing cost and improves the testing efficiency.

Embodiments of the invention disclose a method, a device, and a system for software tests. The software test method in an embodiment comprises: through a browser page, receiving a test case identifier and a test machine address; issuing a software test request to a server, the software test request including the test case identifier and the test machine address, so the server obtaining a test case based on the test case identifier, sending a test instruction corresponding to the test case to a test machine assigned by the test machine address, and sending a test result returned by the test machine to a client; and receiving the test result and showing the test result returned by the server through the browser page. According to the technical scheme, the test request can be received and the test instruction can be sent through the server, so an objective of online software test is realized, and software test range is expanded.

The invention discloses a massive real-time data load simulation testing cloud platform for a smart power grid, and a testing method of the cloud platform. The cloud platform comprises a virtualization unit, a central controller module and agent modules, wherein the virtualization unit virtualizes a plurality of virtual machines; the central controller module is arranged in the virtual machine to form a central controller; the agent modules are stored in the central controller in forms of virtual machine mirror image documents, and activated to form agency servers after the central controller is applied to start the virtual machines; the central controller applies the cloud platform for enough virtual machines according to testing plans in different scales; and agency server simulation monitoring devices send massive monitoring data to the servers, and test the performance of the servers. According to the cloud platform and the testing method, powerful computing resources of cloud computing are depended on; the massive virtual machines are applied from the cloud platform; the massive data of the smart power grid is tested by the agency server simulation monitoring devices; and the cloud platform has the benefits of simple structure, low input cost, convenience in use, wide testing range and good testing effect.

The invention discloses a light screen device with sending and receiving functions and a test method of the light screen. A light source and a receiving light device are installed on a circuit board to form a detection device main body with sending and receiving functions, and the light is reflected by an illuminator to form a detection screen. The detection device and the reflecting device are both provided with angle regulatory mechanisms with the same structure, the angle regulatory mechanism can adjust the angle of an incidence screen and a reflecting screen to ensure the angle between two screens by cooperating with the light screen. The main light axis of the light-emitting device is ensured to be at the same plane with the main light axis of the receiving device. The light screen device has the advantages of simple structure, fewer links, small cumulative error, high measurement precision, and convenient assembling; the light screen device not only can be used for measuring the speed of a pellet, but also used for carrying out the denseness degree test and the measurement of pellet flying angle and direction; and the light screen device broadens the measurement scope of the pellet.

The invention discloses a full-automatic test system and measurement method for gas permeability of rock and belongs to the test system and method for the gas permeability of the rock. A to-be-tested core is placed in a three-axis core clamping device, confining pressure is loaded in the circumferential direction of the to-be-tested core through a confining pressure loading system, axial load is loaded in the axial direction of the to-be-tested core through the confining pressure loading system, gas seepage pressure is loaded at the left end of the to-be-tested core through a seepage gas boosting system, the right end of the to-be-tested core is communicated with the atmosphere through a high outlet gas flowmeter, a medium outlet gas flowmeter and a low outlet gas flowmeter, and the permeability of the to-be-tested core is obtained through automatic calculation of data acquisition and processing software. The confining pressure, the axial load and the gas seepage pressure of a rock sample can be adjusted independently, and with adoption of the test system, stable values of the gas permeability of rock samples with high permeability, medium permeability and low permeability can be calculated and stored automatically. The full-automatic test system and measurement method for the gas permeability of the rock can precisely and reasonably analyze the law of the influence of the confining pressure, the axial load and the seepage pressure on the rock permeability.

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 relates to the field of material structure research and performance in-situ test, and specifically relates to a synchronous radiation X-ray diffraction in-situ stretching device and an application method thereof. The device comprises three main components of a loader, a driver, and a fixing support. The loader is mainly manufactured by using high-strength aluminum alloy or titanium alloy, and comprises a pedestal, a load driving part, a load transmission part, a sample fixture part, a stretch sensor part, and a slide guide rail part. The driver is an integration of a data collection card and a motor driver, and is independent from the loader. The fixing support is manufactured from high-strength aluminum alloy, and has a detachable interface on the lower part. The device is designed based on an X-ray reflective optical path principle. Sample loading fixture and load sensor heights satisfy requirements. The device can be effectively applied in in-situ microstructure and performance integral tests. With the device, a dynamic process of stress and strain distribution of various phases of a material can be subjected to in-situ observation by using high-energy X-rays, and material mechanical performance mechanism can be analyzed on a micro-phase size.

The invention belongs to the technical field of marine organism tests and anti-fouling materials, and relates to a flow channel type marine organism adhesion testing device which is used for simulating the flowing state on the surface of a ship body, testing the adhesion of marine fouling organisms on the material surface and researching the effect of different flowing speed and environment conditions on the adhesion of marine fouling organisms. A water inlet, an stainless steel plate with openings, a honeycomb-shaped polycarbonate sheet, a stainless steel sieve plate and an exhaust valve are respectively manufactured on the upper side in a settling chamber of a box structure from right to left, a test cavity is manufactured at the left end of the settling chamber transversely, a differential pressure transformer is manufactured on the side edge at left end of the test cavity, a vacuum pump is arranged in the test cavity, a water tank is arranged at the left side end of the test cavity, a light source is manufactured at the top of the water tank, an outlet pipeline at the bottom part of the water tank is communicated with the water inlet under the control of a multi-end valve, and a frequency conversion pump, a flow meter and a pressure transmitter are respectively manufactured in the communicated pipeline sequentially; the structure is simple, the usage and operation are convenient and the data test is accurate, thereby being convenient for application and popularization.

The invention discloses a test system, a test equipment and a test method for a mobile terminal. The test method comprises the following steps: operating a test script corresponding to a mobile terminal to be tested by virtue of the test equipment; building a connecting path between the test equipment and the mobile terminal to be tested; sending a test command generated by operating the test script to the mobile terminal to be tested via the connecting path; receiving data from the mobile terminal to be tested via the connecting path; and analyzing the data to verify the execution result of the mobile terminal to be tested to the test command in a real network environment. According to the technical scheme, the mobile terminal to be tested in the real network environment can be automatically tested, thereby saving the test cost and improving the test efficiency.

This invention discloses one corn water content test method and device, which comprises the following steps: sending one pair of corn for relative rotation with electrical position roller sensor; through conversion to get corn real time resistance time sequence change curve; through analysis to describe curve characteristics peak or peak area to compute corn water rate; processing temperature compensation to get compensated corn water rate; its test device mainly comprises roller sensor, temperature meter, measurement circuit and output display.

The invention belongs to the technical field of photoelectronic imaging and testing and relates to a co-graduation surface full-spectrum target. The invention comprises a substrate, a multi-quadrant detector, an asterion hole and a graduation line, wherein the multi-quadrant detector is arranged in the region outside the graduation line of the substrate, the graduation line is the region dividing line of the multi-quadrant detector, the asterion hole is a through hole and arranged in the centre of the substrate, and the substrate is made of full-spectrum transmission materials, the gradation line is any graph with identification characteristics. The invention applies the materials capable of transmitting full-spectrum waveband to the substrate of a gradation plate, greatly reduces the influence of manual or mechanical regulation control conversion on measurement precision. The graduation plate is capable of realizing the integrated functions of visual, infrared and laser graduation targets, has the advantages of high precision, small volume and light weight, is free from imbalance, and can be applied to a full-spectrum multi-optical axis consistency detection system for realizing graduation collimation with high precision and without imbalance.

The invention relates to a test system for the extension of a multi-axis and salt-spray corrosion fatigue crack. The test system comprises a fatigue tester for providing I-type, II-type, III-type and compound fatigue loads required by a test for a test sample through a pull-cut-twist multi-axis loading fixture, and further comprises a salt-spray corrosion environmental box, wherein the salt-spray corrosion environmental box comprises a salt-spray corrosion box body and a salt-spray pre-occurrence box body which are mutually communicated through a pipeline; the salt-spray pre-occurrence box body conveys air and salt water required by salt-spray forming to the salt-spray corrosion box body; the salt-spray corrosion box body provides a required salt-spray corrosion environment for the fatigue crack extension test; both the pull-cut-twist multi-axis loading fixture and the fatigue crack extension test sample are positioned in the salt-spray corrosion box body. Through the adoption of the test system, the fatigue crack extension rate and other fracture mechanics parameters under the combined action of multi-axis loads and the salt-spray corrosion environment can be measured relatively well, and thus the material selection design and the service life evaluation for marine engineering equipment serving in the salt-spray corrosion environment and under a complex stress state can be supported.

The invention discloses a method for measuring a large deformation flow stress curve of a metal plate in the field of metal plate volume forming engineering, which comprises the following steps: taking the metal plate, and performing initial stretching test to acquire a real stress-strain curve; acquiring an equivalent strain interval of a subsequent rolling process; diving the equivalent strain interval into n equal parts to acquire the thickness of the plate after each theoretical rolling; taking n blocks of the metal plate, and cold-rolling and machining each block of the metal plate according to the thickness of the plate after theoretical rolling to acquire n actual thickness and then acquire each actual rolling equivalent strain; performing re-stretching test for the cold-rolled n metal plate blocks to acquire n subsequent flow stresses and n subsequent real strains; and further acquiring n data points to acquire the large deformation flow stress curve of the metal plate. The method of the invention can provide accurate material performance parameters for the numerical simulation in a plate volume forming process, and provide basis for engineering personnel to select an extrapolation model.

The invention discloses a conveyor belt impact strength testing machine. The conveyor belt impact strength testing machine comprises a frame body, wherein the frame body comprises an operation platform and a stand column, wherein a mounting plate is arranged at each of the upper end and the lower end of the front surface of the stand column; two guide rails are symmetrically mounted at the left and right sides of the mounting plates; two guide sleeves are mounted on each of the two guide rails; the two guide sleeves at the upper side are connected through the upper mounting plate and the two guide sleeves at the lower side are connected through the lower mounting plate; a hanging ring is arranged on the top surface of the upper mounting plate and an electromagnet is arranged on the bottom surface of the upper mounting plate; a plurality of weights are arranged on the bottom surface of the lower mounting plate, and a punch is arranged at the lowest parts of the weights; pulleys are arranged at the top of a stand column and a rope winding device is arranged in the middle of the back surface of the stand column; a motor is arranged under the back surface of the stand column; an output shaft of the motor is provided with a rope winding wheel; and a pull rope stretches out from the rope winding device to sequentially penetrate through the rope winding wheel and the two pulleys to be connected with the hanging ring. By virtue of the conveyor belt impact strength testing machine, the size of an impact force can be automatically adjusted and a testing range is relatively large; the automation degree is high and the testing efficiency is relatively high; and the safe protection is tight and the safety is relatively high.

The present invention relates to a multifunctional comprehensive service life test-bed and the control method thereof. The present invention includes a test device with a plurality of types of automatic opening and closing breakers and a breaker undervoltage action detecting device, and also includes a control device, and a power supply device. The control device includes an industrial control computer, a touch screen, a control circuit of a stepping motor and a voltage regulating motor, and a control signal input / output circuit. The power supply device includes a 1-20 routes of test used power supply, wherein, a manual adjustable supply, an automatic adjustable power supply, a direct current manual adjustable power supply, and a fixed power supply are included. The present invention adopts the two technologies of the test device with a plurality of types of automatic opening and closing breakers and a breaker undervoltage action detecting device, and can test the service lives of different types of plastic shells and frame type breakers, the alternating / direct current contactor and the accessory products thereof on the same test-bed. The present invention improves the detecting precision of the delay undervoltage property, and uses the rational match of the types of the power supply to realize more temporary tests besides the prescribed test.

The switching equipment used for detecting the breaking, insulation and pressure enduring performance of a cable network relates to the switching equipment in the electronics test technical field. The problems to be solved are that: the switching equipment used for detecting the breaking, insulation and pressure enduring performance of the cable network is provided, the technic proposal comprises: a switching cable, a switching plug group, a switching cable, a test mouth group and an extension test mouth; one end of the switching cable is connected with a N route test signal produced by a test instrument, another end thereof is connected with the switching plug group, the output end of the switching plug group is connected with the switching cable, the output ends of the switching cable are respectively connected with each test plug group of the test mouth group and the extension test mouth in parallel, the output ends of the shunt-wound test mouth group and the extension test mouth are connected with the external tested cable and the cable network. Using the switching equipment, the test signal can be extended to an M times test signal group, and can provide a combination test of the non-homologous supply test signals, the test range is expanded and the test efficiency is improved.

The invention provides a cold plate performance test device which is characterized by comprising a thermometer (4), a pressure meter (5), a flowmeter (6), a filter (7), a heat radiator (8), a flow valve (10), a water pump (11), a water tank (13) and a cold plate (1) which are sequentially connected together in series through a pipeline, wherein a fan (9) is fixed together with the heat radiator (8) through a bracket; an electric heater (12) is arranged on the side wall of the water tank (13) in a threaded connection manner; a heating resistance module (2) and a wall temperature sensor (3) are fixed on the surface of the cold plate (1) through bolts; and a control unit (14) is connected with the heating resistance module (2), the wall temperature sensor (3), the thermometer (4), the pressure meter (5), the flowmeter (6), the fan (9), the water pump (11) and the electric heater (12) through a conductive wire, so that a control part of the device is formed. The cold plate performance test device disclosed by the invention has the advantages of wide measurement range, small measurement error and high measurement precision.

The invention discloses an SDH (Synchronous Digital Hierarchy) multi-domain comprehensive test device and a test method thereof, mainly solving the problem that single test equipment tests the network performance of an ATM (Asynchronous Transfer Mode) network transmitting in an SDH mode or an IP (Internet Protocol) packet network packed by adopting an HDLC (High level Data Link Control) protocol.The SDH multi-domain comprehensive test device mainly comprises a test data processor, an SDH processor and a microcomputer control system. The test method comprises the following steps of: (1) initializing the working mode of the SDH multi-domain comprehensive test device; (2) generating test information cells or packets of the corresponding working mode by the test data processor, mapping into an SDH frame and sending to a tested network element by the SDH processor; (3) extracting the test information cells or the packets from the loopback SDH frame by the SDH processor; (4) processing thereceived test information cells or packets by the test data processor; and (5) analyzing and displaying a test result by the microcomputer control system. The invention can not only test a single-mode or multi-mode multi-rate SDH network, but also realize that the single equipment tests the network performance of the ATM network and the packet network, and has easy and convenient operation and high cost performance.

The invention discloses a visual tensile testing system, which belongs to the field of mechanical analysis and test on metallic materials. The visual tensile testing system comprises a loading mechanism, a control mechanism, a signal acquisition and measurement mechanism, a visual acquisition mechanism and a data processing mechanism. The visual tensile testing system is characterized in that: the loading mechanism is mechanically connected to the interior of a host frame of a tester by a clamp and a clamping block; the control mechanism is arranged in a host base frame of the tester by a card; the signal acquisition and measurement mechanism is arranged in a slot of a host control card by the card; the visual acquisition mechanism consists of a CCD image acquisition system, an acquisition card, image analysis processing software, an automatic scaling frame and a communication unit; the data processing mechanism comprises a computer and an industrial personal computer; and the industrial personal computer is connected with a host control mechanism by a standard RS232 communication line. In the visual tensile testing system, the tester is utilized to perform dynamic loading on a tensile test specimen, the visual acquisition system acquires the deformation of the test specimen in a scale distance, a strength value channel acquires a strength value, a displacement channel acquires displacement, and the data processing system finishes data processing and performs analysis on tensile mechanical performance to obtain accurate and complete results.

The invention discloses a heating furnace for a creep and rupture life tester, which comprises an operating handle, a fixing piece, an outer furnace shell, an inner furnace shell, a heat-preservation layer and a fire-retarding layer, wherein the heat-preservation layer adopts aluminosilicate fiber cotton; a heat-resistance layer in the core part of the heating furnace has a tubular structure; the inside diameter of the tubular heat-resistance layer ranges from 100 to 110 millimeters and is divided into upper, middle and lower three layers; each layer of the heat-resistance layer is formed by joining two high-alumina bricks with a half-'tubular' structure and the layers of the heat-resistance layer have a consistent coaxiality with the axis of the furnace shells; the inner wall of each layer of the heat-resistance layer is spirally and uniformly distributed with 16 circles of furnace wires; the diameter of the furnace wires is 5 to 6 millimeters; the screw pitch is 10 millimeters; the spiral height is 160 millimeters; and the furnace wires on the inner wall of each layer of the heat-resistance layer are led out of the furnace shells respectively to be connected with a power supply. Compared with the prior art, the heating furnace has the advantages of safety, economy and practicality, can be used for heating in creep and rupture life tests of various metal materials at 100 to 1,200 DEG C and can truly reflect the homoiothermy of a whole test process.

The invention relates to a flexible loading system of a friction and wear testing machine. The system is characterized in that: a loading oil cylinder is horizontally arranged, a piston rod passes through a body of the loading oil cylinder, a displacement sensor is arranged on one end of the piston rod, a load sensor is connected with the other end of the piston rod, a housing of the displacementsensor is fixed on a frame, and a measurement iron core is connected with the load sensor by passing through the piston rod; a friction pin is arranged on the load sensor, a friction disc and the friction pin are relatively arranged, and the friction disc is connected with a variable frequency motor through a driving shaft and a torque sensor; the loading oil cylinder is communicated with a hydraulic system through a servo valve, the displacement sensor and the load sensor are connected with a servo controller, and the servo controller is connected with the servo valve; and a guide rod is arranged in parallel with the load oil cylinder, and the load sensor is fixedly connected with a slide block of the guide rod. The system allows the labor intensity of operators to be reduced, the load value to be continuously variable, stepless loading of loads to be realized, impact problems of loading of original systems to be solved, and the loading stability to be substantially raised.

The invention relates to a falling protector self-locking reliability tester which comprises a machine frame and a guide rail assembly. The machine frame above the guide rail assembly is fixedly connected with a guidance releasing device. The guidance releasing device is fixedly connected with a connection portion. The connection portion is fixedly connected with a weight-adding device. The machine frame is movably connected with a limitation device. The machine frame is provided with a lifting device. The advantages of the falling protector self-locking reliability tester are that the lifting device drives the guidance releasing device connected with the falling protector to control the falling protector to be tested on the guide rail assembly or a rope, the limitation device guarantees the falling protector to be tested within the right movement area during testing, and the weight-adjustable weight-adding device improves test results of the falling protector under different weights effectively, thereby effectively reducing work intensity of the operating personnel during test in the past; and the tester is convenient to operate, good in safety and reliability and good in practical performance, can be suitable for falling protectors of different models and can reduce damage to the operating personnel.

The invention discloses a device and a method for testing a power cable fault. The device for testing the power cable fault comprises a high voltage part and a detection control part; the detection control part comprises a potentiometer and a detection and control circuit; two fixed ends of the potentiometer are connected with any two phases of a tested cable; one phase is a faulted phase; the sliding end of the potentiometer and the fault test current collection end of the detection and control circuit are connected with the output of the high voltage part; the control end of the detection and control circuit is connected to the sliding end of the potentiometer; and the detection signal end of the voltage at both ends of a test bridge of the detection and control circuit is isolated from the high voltage part and connected in parallel with the two fixed ends of the potentiometer. By the test method in which the high voltage part is isolated from the detection and control part, an operator can exert high voltage in a higher range to the tested faulted cable by regulating a voltage regulator on the low voltage side safely and reliably, so the tested fault resistance value is large, and the fault test range is enlarged greatly.

The invention discloses a system and a method for testing the mechanical-electrical coupling effect of an electrical conducting functional material . The system comprises an electrical conducting functional material sample, a sample electrode, an insulation tape, an external wire on the electrode, a sample clamping device, a displacement sensor, a transmission shaft, a driving motor, a force sensor, a handheld four-point probe, a digital source meter B, a digital source meter A and a DC power supply, wherein an integral load-displacement curve can be obtained through accurate control of parameters such as voltage strength, conduction time and loading speed; mechanical and electrical properties such as elasticity modulus, tensile strength, elongation at break, yield strength, integral volume resistivity and micro-area volume resistivity distribution of a material under the action of different force fields and electric fields can be obtained through further calculation. Therefore, measurement and analysis of the mechanical-electrical coupling effect of the electrical conducting functional material can be realized accurately and reliably, and the system and the method are suitable for electrical conducting functional materials such as conductive macromolecule, piezoceramics, a polymer-matrix composite, a ceramics-matrix composite, and a metal-matrix composite.

This invention relates to a kind of high pressure, visual and volume adjustable phase equilibrium measure device. It is tube structure with visual window. There is semi-open type insulating sleeve in the periphery, temperature sensor in the inner wall. The press hat in the top of the tube links with the adjusting bracket, the adjusting lead screw in the central axis of the adjusting bracket links with the plunger piston in the tube, which drives the plunger piston reciprocate in the tube. The ends of the tube bottom link with the CO2 liquid and feeding system by the discharge joint and the input joint. The magnetic stirring controller is set in the bottom of the device. The invention can change the volume of the visual tube by adjusting the lead screw active plunger piston, it has increased the change value of the pressure in the tube, enlarged the testing range of the system.

The invention discloses a vehicle suspension performance test device comprising an installing support, hydraulic cylinders, a flat plate, suspensions, suspension supports, rotating devices, road surface condition simulation devices, connecting devices, driving systems and a test system. The installing support is fixedly connected with the hydraulic cylinders which are fixedly connected with the flat plate. The suspensions are connected with the suspension supports through threads. The suspension supports are installed on the connecting devices through bearings and connected with the installing support through connecting members. The rotating devices are installed on the road surface condition simulation devices equipped with rollers. The road surface condition simulation devices fixed on the road surface can simulate different road conditions according to different excitations. The rotating devices are connected with the driving systems through the connecting devices. Simulation is performed by using a 1 / 2 vehicle model, and a certain load is applied with cooperation of the hydraulic cylinders. When the driving systems drive the vehicle wheels to rotate on the rollers of the road surface condition simulation devices, the movement of the suspensions is closer to the actual driving state, and the preliminary suspension performance test can be realized so as to reduce the development cost.

The invention provides a link test method, apparatus and system. The method comprises the following steps: obtaining a test message via a user network interface analog input message, wherein the test message is used for testing a current link by using a test protocol in a two-way active measurement test protocol TWAMP; sending the test message to a reflector; identifying a response message sent by the reflector in response to the test message, wherein the response message is matched with a pre-configured flow matching rule of the reflector; and obtaining a test result of the current link according to the response message. By adoption of the link test method, apparatus and system, the problem of relatively low test efficiency of testing the network link caused by the relatively large deployment difficulty of the standard TWAMP protocol is solved, and thus the effect of improving the efficiency of testing the TWAMP link is achieved.

The invention discloses an application program test method and device and a storage medium, and the method comprises the steps: obtaining a first key vocabulary set according to vocabularies containedin test target information; based on a keyword recommendation model, obtaining a second keyword associated with each first keyword in the first keyword set to obtain a second keyword set; respectively obtaining test cases matched with the first keyword set and the second keyword set; and based on the obtained test case, testing the target application. The test cases are expanded, the number of the test cases is increased, and the target application program is tested based on the obtained test cases, so that the function covered by the test cases can be expanded, the comprehensiveness of the test cases is improved, and the test range of the target application program is expanded. Moreover, a technician does not need to compile a test case, the professional ability of the technician is notrelied on, and automatic testing is realized.

The invention discloses a connection test device, an insulation test device and a test system of a universal test machine. The connection test device comprises a first test end, a second test end, a multi-range constant-current circuit, a multi-range adjustable amplification circuit and a first voltage comparison circuit, wherein the first test end is connected with one end of the multi-range constant-current circuit and one end of the multi-range adjustable amplification circuit; the second test end is grounded; the first test end and the second test end are respectively used for being connected with two points to be tested on a circuit board to be tested; the other end of the multi-range constant-current circuit is connected with preset connection test voltage; the other end of the multi-range adjustable amplification circuit is connected with the first voltage comparison circuit; the first voltage comparison circuit is used for comparing voltage output by the first voltage comparison circuit with first reference voltage; when the voltage is higher than the first reference voltage, failed connection between the two points to be tested is judged.

The invention relates to a resilience force test method and a resilience force test tool. The resilience force test method comprises the following steps: 1) making a material to be tested into a bar-shaped sample; 2) respectively fixing two ends of the sample on upper and lower compressing panels of upper and lower tools, placing the test position of the sample between the upper and lower compressing panels, and keeping the sample in a free bending state; 3) setting a compressing distance, a compressing rate and a lasting time of a compression mechanism, starting the compression mechanism, and utilizing the compression mechanism to automatically record a test curve of the size of the resilience force of the sample; and 4) analyzing the test curve, and acquiring the resilience force and the resilience force retention coefficient of the sample. The resilience force test method provided by the invention can be simply operated. By utilizing the resilience force test tool provided by the invention, the widest test scope is acquired, and the influence on a test result caused by holding the sample is avoided. The flexibility of the material can be evaluated according to the sizes of the resilience force and the resilience force retention coefficient which are acquired by using a compression test.