50results about How to "The test results are simple and clear" patented technology

The invention relates to a circuit structure for automatically testing an analog baseband chip comprising an analog-digital converter (ADC) and a digital-analog converter (DAC). A low-voltage differential signal conversion module is connected with a low-voltage differential signal input end and a low-voltage differential signal output end of the analog baseband chip; an output end of the DAC of the analog baseband chip is connected with an input end of the ADC; the low-voltage differential signal conversion module is connected with a transmit data storage module, a receive data storage module and a transmitting and stopping control module; and the transmit data storage module and the receive data storage module are connected with an external display device via an error calculation module and a test result display module. The invention also relates to a method for automatically testing the analog baseband chip comprising the ADC and the DAC based on the circuit structure. By the circuit structure and the method for automatically testing the analog baseband chip comprising the ADC and the DAC, the testing complexity is reduced, the testing time is shortened, and the testing precision and reliability are improved; and the process is convenient and fast, the working performance is stable, and the application rage is wider.

The invention discloses a method and a device for determining the water content of a fresh concrete mixture based on dielectric constant. According to the method, a relative dielectric constant of concrete is tested based on the propagation rate attenuation of an electromagnetic wave in the fresh concrete mixture and the reflection principle of the electromagnetic wave on a metal plate of a testing device, and then, in accordance with the principle that the relative dielectric constant is relatively sensitive to water, the propagation velocity of the electromagnetic wave in the fresh concretemixture is enabled to vary so as to lead to the variation of the relative dielectric constant, thus the water content of the fresh concrete mixture can be measured. The method has the characteristicsof no contact between an electromagnetic transmitting and receiving device and a tested object, large testing area and wide water ratio testing range. The method can be used for overcoming the defectthat the traditional method is insufficient in concrete adaptability, largely impacted by environment, inaccurate and unreliable, has greatly increased precision and speed in testing the relative dielectric constant of concrete, and has the characteristics of great simplicity in manufacturing testing device, good simplicity and convenience, accurate test results and outstanding operation easiness.

The invention provides a method for testing tension and rigidity of a short derrick boom of an arch bridge. An aim of calculating the tension of the derrick boom according to a fundamental frequency can be fulfilled by increasing a derrick boom parameter identification condition by a method of arranging a mass block on the derrick boom. According to the characteristic that the fundamental frequency of the short derrick boom is sensitive due to the mass change of the derrick boom, four groups of equations on the relation between the fundamental frequency of the short derrick boom and the additional mass can be obtained according to a test result, and the tension, the bending stiffness and a boundary restraining condition of the derrick boom can be obtained by calculating a characteristic value by using a genetic algorithm in combination with the equation groups. The method for testing the tension and the rigidity of the short derrick boom of the arch bridge is easy to implement on the site; and the test method is simple and the test result is accurate.

The invention relates to the field of battery detection and discloses a testing method of porosity of a lithium battery diaphragm. The testing method comprises the following steps of (1) cutting out a diaphragm sample, (2) weighing the mass of the diaphragm sample on an electronic balance as M, (3) putting a glass containing water on the electronic balance, returning a reading to zero, (4) tying a metal ring with a fine line, holding a free end of the fine line to allow the metal ring to be immersed into the water slowly till the metal ring is completely immersed and suspended in the water, recording the reading of the balance as M1, (5) taking the metal ring out of the water, returning the reading of the balance to zero, (6) rolling the diaphragm sample, sleeving and fixing the diaphragm sample in the metal ring, repeating Step (4), recording the reading of the balance as M2, and (7) working out the porosity P of the diaphragm. The testing method has the advantages of simplicity in operation, accurate testing results, simple equipment, strong operability, low testing cost and the like.

The invention discloses a vision and touch tester and a vision and touch sensitivity testing method. In the vision and touch tester, a parameter testing module of a parameter setting and signal generating module is respectively connected with the input end of a stimulating signal receiving module; the output end of the stimulating signal receiving module is connected with the input end of a signal control module; the output end of the signal control module is connected with the input end of a multi-channel multi-path signal generation module; the output end of the multi-channel multi-path signal generation module is respectively connected with a vision signal source and a touch signal source; a 'yes' button and a 'no' button are respectively connected with the input end of a feedback signal acquisition module; the output end of the feedback signal acquisition module is connected with the input end of a feedback signal sending module; and the output end of the feedback signal sending module is connected with a data processing module. Besides conventional vision, touch and double-channel combined tests, the invention also can realize the researches of touch alarms, sports touches, touch memories, vision and touch combined motion perception phenomena, and the like.

The invention relates to a small electric unmanned aerial vehicle motor testing device and belongs to testing equipment. A power supply voltage controller, a tension tester, a frame, a temperature displayer, an integrated processing box and a computer are assembled on a rack, a motor which is to be tested and provided with blades, a non-contact velometer and an infrared temperature measurement sensor are assembled on the frame, a tension test rod coaxially connected with the motor to be tested is arranged on the frame, an optical reflector plate matched with the non-contact velometer is attached to the outer side of the motor to be tested, a tension and pressure sensor is assembled on the tension test rod, the integrated processing box is respectively connected with the computer, the tension tester, the power supply voltage controller and the temperature displayer through wires, the temperature displayer is connected with the infrared temperature measurement sensor, the motor to be tested is connected with the power supply voltage controller, and the tension and pressure sensor is connected with the tension tester. The small electric unmanned aerial vehicle motor testing device is reliable in performance, high in automation degree and accurate in detection result and provides technological support for scientific selection of small unmanned aerial vehicle motors.

The invention relaets to a full-duplex test device and method for a TD-SCDMA RF front end, in which a signal resource sends a frame of test signal with uplink data and downlink data, the signal then is passed through a power divider and transmitted to a downlink input Tx port of a RF front end FE module to be an input signal of a downlink, another pathway of signal is passed through a separator and circulator, then transmitted to an uplink input Rx port of the FE module to be as an input signal of an uplink, the FE module is synchronous with the signal resource thereby ensuring the uplink signal and the downlink signal have noninterferencen, an uplink output signal of the Rx port and a downlink output signal of an Ant port are passed through a multiplexing device and transmitted to a spectrum analyzer, a test result of the uplink and dowlink are readed by modifying a time slot of current test. The invention realizes full-duplex test of the FE module, the test result has more authenticity, test of the uplink and dowlink can be realized only by once connection, thereby the test efficiency is largely enhanced in an automatic test system.

The invention relates to a micro-open-type safety valve displacement test system and a test method. The test system comprises a gas storage tank, a water storage tank, a test container, a sump and a weighing system used for measuring the weight of water entering the sump. The test container is communicated with a branch pipe used for mounting a tested valve. A valve opening height detector is arranged on the tested valve. The gas outlet of the gas storage tank is communicated with the water storage tank. The water outlet of the water storage tank is communicated with the test container. The water outlet of the tested valve is connected with the sump. Gas in the gas storage tank enters the water storage tank to continuously feed water in the water storage tank into the test container until water is discharged through the water outlet of the tested valve. According to the invention, for the micro-open-type safety valve, incompressible water is used as a test medium to ensure that only water flow through the tested valve; and the displacement of the tested valve can be accurately measured.

The invention discloses a method for testing the shielding effectiveness of a textile material under a complex electromagnetic environment. The method comprises the following steps: (1) establishing a hollow metal cavity, wherein the hollow metal cavity is put in a reverberation room, and a window and a first waveguide hole are formed in the surface of the hollow metal cavity; a field intensity meter and a first stirrer are arranged in the hollow metal cavity; (2) constructing a reverberation room work environment; (3) enabling the to-be-tested textile material to closely cover the window, enabling the stirrer, recording electric field intensities acquired by the field intensity meter when the stirrer does step-by-step rotation each time, and computing an average electric field intensity value as E1; (4) removing the to-be-tested textile material on the window, keeping the field intensity meter in the step 1 unchanged in position, keeping all parameters in the step 3 constant, and computing an average electric field intensity value as E2; (5) computing the shielding effectiveness SE of the to-be-tested textile material by adopting a formula SE=20*log(E1 / E2) (1). The method disclosed by the invention has the advantages that the operation is simple and fast; a testing result is accurate and reliable, and not influenced by the size of the window.

The present invention relates to the technical field of electronic equipment, and discloses a method and a device for detecting the eyesight. According to the technical scheme of the invention, the method for detecting the eyesight is applied to a mobile terminal. The method comprises the steps of displaying a plurality of sighting marks for multiple times, wherein the feedback information of a testee aiming at a displayed sighting mark is acquired after the display of sighting marks each time, and a test result corresponding to the displayed sighting mark is determined according to the feedback information; and determining the eyesight detection result of the testee according to a test result corresponding to each sighting mark. According to the embodiments of the invention, sighting marks are displayed on the mobile terminal. Meanwhile, the eyesight detection result of the testee is determined according to the test result determined based on the feedback information of the testee. Therefore, a user can autonomously and conveniently detect the eyesight itself without the adoption of any specific detection environment in a specific test environment or the help of professional staffs or other people, and accurate detection results are obtained. The vision detecting process is significantly simplified and the intelligent level of vision detection is improved. The user experience is improved.

The invention discloses a test device for testing performance of iris recognition equipment, and the device comprises a storage unit suitable for storage of a set of multimedia content with an iris image; a singling interface and a data interface which are connected with the iris recognition equipment; and a test control unit suitable for sending a first message for requesting test beginning to the iris recognition equipment by the signaling interface and receiving a second message for conforming test beginning from the iris recognition equipment by responding to the signaling interface; a first subset of the multimedia content is sent to the iris recognition equipment by the data interface, so the iris recognition equipment recognizes an iris. The invention also discloses a corresponding test method for testing the performance of the iris recognition equipment.

An embodiment of the invention discloses a test circuit for an infrared receiving head. The test circuit comprises an infrared transmitting module, an infrared receiving module and a control module, wherein the infrared transmitting module is used for transmitting a plurality of infrared transmission signals with different intensities in a time sharing manner; the infrared receiving module is configured to connect the infrared receiving head to be tested, and the infrared receiving head to be tested receives the plurality of infrared transmission signals with different intensities to generatedifferent pulse signals; and the control module is configured to control the infrared transmitting module to operate and receive the pulse signals, and the control module detects the widths of the pulse signals and displays the widths. The test circuit for the infrared receiving head disclosed by the invention is simple and convenient.

The invention provides a gas wetability test method. The method comprises the following steps: hanging rock to be measured underneath a weighing device, immersing the rock to be measured into a liquid, recording water absorption time and quality of the rock to be measured after water absorption according to preset time interval, obtaining water absorption speed of the rock to be measured according to the quality of the rock to be measured after water absorption and the water absorption time, taking the 100% water saturated rock to be measured after water absorption out of the liquid and putting the rock onto the weighing device, recording volatilization time and quality of the rock to be measured after volatilization according to preset time interval, obtaining volatilization speed of the rock to be measured according to the quality of the rock to be measured after volatilization and the volatilization time, and obtaining gas wetability of the rock to be measured according to the water absorption speed of the rock to be measured and the volatilization speed. The method provided by the invention is simple and feasible, and requirements on experimental samples are not high. The method is easy to operate, and the obtained test result is simple and visual.

The invention discloses an early warning system in a software development process. The system comprises a database, a GPS positioning unit, a client information input unit, a client demand input unit, a software test unit, a mouse track scanning unit, a modeling unit, a button click recognition unit, an anomaly early warning unit, an anomaly processing unit, a test result output unit, a test evaluation unit and an adjustment optimization unit. The clock-in range of the management software required by the client and recorded into the database is called by the client demand recording unit through big data, thus confirming the designed effective clock-in range by utilizing the software testing unit, giving an early warning and optimizing the software when the design exceeds the range required by the client; whether misoperation exists in the software testing process or not is determined through the mouse track scanning unit and the button clicking recognition unit, if yes, an alarm signal is sent out and processed in time, delay of follow-up promotion and marketing work of software is avoided, and the satisfaction degree of customers is improved.

The invention relates to a transformation ratio measuring method, in particular to a method for measuring the transformation ratio of a transformer in a power failure state and belongs to the technical field of electrical measurement. The method which is applicable to a current transformer and a voltage transformer comprises the following steps that: 1) an output end of a signal generation circuit, the transformer and a second sampling display element are connected, and the transformer is connected with a first sampling display element; 2) the transformer reads a voltage value through the first sampling display element and the second sampling display element; and 3) if a singlechip calculates the transformation ratio of the transformer in the step 2), the singlechip outputs a calculated result to a display screen. The method for measuring the transformation ratio of the transformer in the power failure state is reasonable in design, simple in structure and diversified in form. By combination of the method and the singlechip, a special instrument is manufactured. The method is a reliable auxiliary method for checking the transformation ratio for metering and relay protection in the power industry.

The invention discloses a scratch resistance evaluation device for a silver fiber. The scratch resistance evaluation device comprises a test board, wherein an analog device for simulating friction contact of the silver fiber and a bearded needle when the silver fiber is knitted on a knitting machine is arranged on the test board; a resistance value measurement device and a friction times collection sensor are arranged on the analog device; the scratch resistance evaluation device also comprises a set resistivity threshold automatic stop system capable of driving the analog device to stop acting when the resistance value achieves a set value; the set resistivity threshold automatic stop system comprises a controller, an information storage module, a digital edition module, a signal output module, a signal input module, a liquid crystal display and a friction times display; the information storage module, the digital edition module, the signal output module, the signal input module, the liquid crystal display and the friction times display are electrically connected with the controller respectively; the signal output module is electrically connected with the analog device; the signal input module is electrically connected with the friction times sensor and the resistance value measurement device; the digital edition module is connected with a digital editor. The test result is accurate, and the resistivity of the silver fiber at any set friction value can be obtained.

The invention discloses a hot-film gas extinguishing chemical concentration sensing module. By the adoption of a diffluence test method, microscale airflow passes through a bypass pipeline, inside which a temperature-sensitive film and a heating film are arranged; the microscale air and a gaseous mixture of the gas extinguishing chemical are heated by the heating film; as the gaseous mixture passes through the temperature-sensitive film, the temperature of the temperature-sensitive film changes and then the resistance value of the temperature-sensitive film changes; voltage value generated from the circuit is outputted, and through signal treatment, a digital signal and an analog signal are outputted. By controlling the flow of gases flowing through the temperature-sensitive film, the temperature change of the temperature-sensitive film is determined by the concentration of the gaseous mixture, and the electric signal generated is processed and outputted so as to obtain the concentration value of the gas extinguishing chemical. The invention can be widely applied in a gas extinguishing chemical concentration test system so as to establish a rapid high-precision gas extinguishing chemical concentration test system.

The invention discloses a mould wiring testing device. The device comprises a box body, a touch control displayer, an alarm control component, a heat dissipating plate, a control board and a wire holder, the touch control displayer and the alarm control component are arranged on the top of the box body, the heat dissipating plate is located at the front surface of the box body, the wire holder islocated at the back surface of the box body, the alarm control component is arranged at the back surface of the box body, close to the top of the box body, and the control board is arranged inside thebox body; the invention further discloses a related system and method. The testing device can quickly detect connection correctness, installation stability and wire body quality reliability of temperature sensing wires and heating wires.

The present invention discloses a test method of influence of heat effect on a transformer anti-short circuit capability. The method comprises: applying total loss and a low-voltage end short circuit to the high-voltage end of a transformer to be tested, wherein the total loss is the sum of the no-load loss and the load loss of the transformer to be tested; testing the oil temperature of the transformer to be tested; if the oil temperature of the transformer to be tested is stable, stopping applying the total loss to the high-voltage end of the transformer to be tested; performing short-circuit test of the transformer to be tested after temperature rising, and measuring the maximum short-circuit current I1 of the transformer to be tested after temperature rising; decreasing the transformer to be tested to environment temperature, performing short-circuit test of the transformer to be tested which is reduced to the environment temperature, and measuring the maximum short-circuit current I2 of the transformer to be tested in the environment temperature; and comparing the I1 with the I2, and obtaining the influence of the heat effect on the anti-short circuit capability of the transformer to be tested. The test method is suitable for arbitrary types of transformers, is accurate in test result, simple and easy to operate.

The invention relates to a device for testing the power-on heating performance for a high-power semiconductor device, and the testing device comprises a semiconductor device unit, a heat dissipation unit which can be in contact with the semiconductor device unit for the heat dissipation of the semiconductor device, a temperature measurement unit which is connected with the heat dissipation unit and is used for detecting the temperature of the heat dissipation unit, a driving unit which is connected with the heat dissipation unit and the temperature measurement unit and used for driving the heat dissipation unit to be in contact with the semiconductor device unit, and an intelligent temperature control water cooling unit which is connected with the heat dissipation unit and used for intelligently controlling the heat dissipation unit to dissipate heat of semiconductor devices in the semiconductor device unit. According to the scheme of the invention, sound contact between a thermocouple and the surface of a radiator is effectively ensured, and the temperature measurement accuracy and the consistency of measurement results are greatly improved. Intelligent temperature control and adjustment of the inlet water temperature are achieved, the problem of wide fluctuation of the inlet water temperature is solved, the frequency conversion water pump does not need to be closed when the IGBT device is replaced, and the test efficiency is greatly improved.

The invention provides an OpenSSL-based QAT performance comparison method and system. The method comprises the steps of installing a QAT driver, OpenSSL and qat-engine; loading USDM; running lsmod; checking whether the USDM component is successfully loaded or not; creating a qat-engine environment of the OpenSSL; and comparing algorithm speeds of the qat-engine and the OpenSSL to obtain performance comparison data. QAT and SW are loaded for verifying the speed of the same encryption algorithm; the operation is simple; the test manpower is reduced; a test result is simple and clear; an obtainedconclusion can serve as data support of QAT technology promotion and reference for measuring the technical development quality by test personnel; and the test systems and dimensions of the QAT are enriched.

The invention discloses a brushless motor test device and test method. The brushless motor test device includes a servo motor controller, a servo motor, a coupling, a signal processing circuit system,and a signal acquisition and analysis software system. One end of the servo motor is connected to the servo motor controller, and the other end of the servo motor controller is connected to the signal acquisition and analysis software system. The servo motor controller is used for controlling the operation of the servo motor. The output shaft of the servo motor is connected to a measured motor through the coupling. The Hall sensor signal line and the winding lead-out line of the measured motor are connected to the signal input end of the signal processing circuit system. The signal output endof the signal processing circuit system is connected to the signal acquisition and analysis software system. The brushless motor test device and test method have the advantages of high test accuracy,high test efficiency, convenience of use, high speed, simple test method and good repeatability, and can be better applied to full inspection on a production line.

The invention discloses a thermal energy analyzer. The thermal energy analyzer comprises a base and at least three sample cups, wherein the upper surface of the base is inwards sunken to form a groove, at least three fixing grooves are formed around the groove, supporting rods matched with the groove are arranged at the bottoms of the sample cups, the upper surfaces of the sample cups are at leastpartially sunken inwards to form cavities, analysis rods are horizontally arranged in the middles of the cavities, and the two ends of the analysis rods are connected with a computer end through connecting lines. The thermal energy analyzer overcomes the defect that in the prior art, before melted iron pouring of ductile iron, testing methods such as chemical component analysis, spectral analysisand metallographic examination are long in testing period, which makes it difficult to carry out quick and accurate testing to nodularizing inoculation effect of ductile iron graphite before solidification.