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46results about How to "The test environment is stable" patented technology

Apparatus for Testing Infrared Sensors

An apparatus for use with automatic testing equipment for testing infrared sensors on integrated circuits is provided. The apparatus includes an infrared source, a heat mass, and an electronic frequency modulator. The infrared source is modulated according to a predetermined test frequency such that the infrared source emits an infrared test signal representative of a test temperature and corresponding to the temperature of the heat mass and the predetermined test frequency. A signal processor, electrically coupled to an integrated circuit having an infrared sensor, receives a sensed signal from the infrared sensor in response to the infrared test signal and uses the sensed signal according to the predetermined test frequency to determine a measured temperature.
Owner:ANALOG DEVICES INC

Vacuum high-low temperature semiconductor device test probe station and semiconductor device test method

The invention relates to a vacuum high-low temperature semiconductor device test probe station comprising a vacuum cavity, an anti-radiation screen, a sample station and a probe arm; the vacuum cavityis used for forming a sealed test environment; the anti-radiation screen is used for blocking radiation of the outside to the sample station and is located in the vacuum cavity; the sample station isused for containing a sample and located in the anti-radiation screen; the probe arm comprises a probe needle rod and a probe located at the tail end of the probe needle rod; and the probe needle rodpenetrates through the vacuum cavity and the anti-radiation screen, so that the probe stretches into the position where the sample is located so as to conduct point needling. The invention further discloses a semiconductor device test method. The vacuum high-low temperature semiconductor device test probe station as mentioned above is used. According to the vacuum high-low temperature semiconductor device test probe station and the semiconductor device test method provided by the invention, the structures such as the vacuum cavity, the anti-radiation screen and the like are arranged, so thata test environment integrated with high temperature, low temperature, vacuum and the like can be effectively created, and a stable test environment can be provided for the produced semiconductor device.
Owner:深圳市森美协尔科技有限公司

Test method and device, electronic equipment and computer storage medium

The embodiment of the invention relates to the technical field of testing, and discloses a testing method and device, electronic equipment and a computer storage medium, and the testing method comprises the steps: receiving a testing request sent by a client for any micro-service, wherein the any micro-service is a real service and / or a baffle service, the real service comprises a service of a service node marked by a baffle pointer in the test link, the baffle service comprises services of service nodes except the service node marked by the baffle pointer in the test link, and the test link comprises a plurality of service nodes; then, obtaining routing information of each service node included in any micro-service; and then, based on the routing information of each service node included in any micro-service, testing the test request and returning a corresponding test result. According to the method provided by the embodiment of the invention, the service nodes are marked in a pointer manner, so that the zero-invasion and pluggable baffle is achieved, and meanwhile, the baffle can be freely adjusted left and right like a vernier.
Owner:CHINA CITIC BANK

Near-infrared detector uniformity test system

InactiveCN105953927AReduce background radiationLow background radiationPyrometry using electric radation detectorsPlate heat exchangerNitrogen
The present invention discloses a near-infrared detector uniformity test system. The system comprises a light avoiding box holding a near infrared detector to be tested; an integrating sphere is arranged at the opening of the front end of the light avoiding box; the light avoiding box is internally provided with a cold shield located on the emitting light path of the integrating sphere to the near infrared detector to be tested and internally provided with a heat exchanger for supporting the near infrared detector and the cold shield and a lifting platform for supporting the heat exchanger; a cycle liquid refrigerating machine and a filling nitrogen device are arranged at the outside of the light avoiding box; the cycle liquid refrigerating machine and the filling nitrogen device are connected with the heat exchanger to form a circulation pipeline; and the filling nitrogen device lets the nitrogen in the light avoiding box through the pipeline. The near-infrared detector uniformity test system provides stable low-temperature, low-background radiation and drying test environment and test state for the uniformity test of the near infrared detector.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI

Pitch mixed material cracking resistance tester

The invention relates to a pitch mixed material cracking resistance tester which is used for solving the problem of test detection of pitch mixed materials and comprises an environmental box, a fixed support seat, a sticking platform plate, a slide plate, a slide plate displacement loading mechanism, a spoke type sensor, a rotating coupling and a servo motor, wherein the fixed support seat is installed in the environmental box; the sticking platform plate is installed on the fixed support seat and touches and is connected with the slide plate in a movable fit way; the bottom of the slide plate is connected with the slide plate displacement loading mechanism; the slide plate displacement loading mechanism is connected with the servo motor by the rotating coupling, and the spoke type sensor is connected to a coupling disk of the rotating coupling; a side support seat of which the bearing is embedded into the environmental box is installed on the rotating coupling; and the servo motor is connected outside the side body of the environmental box. The invention has simple structure and simple and convenient use and is suitable for carrying out a cracking resistance test on various pitch mixed materials.
Owner:沧州市市政工程股份有限公司

System and method for testing wireless roaming function of USB wireless network card equipment

The invention provides a system for testing wireless roaming function of USB wireless network card equipment. The system comprises a wireless network controller, a wireless access point, a programmable attenuator, a PC client and a wireless network card to be tested. wherein the wireless access point and the wireless network card to be tested are respectively arranged in independent shielding boxes, the wireless access point is connected with the wireless network controller through a network cable, and the shielding box where the wireless access point is located is connected with the programmable attenuator through a radio frequency line. The invention also provides a method for testing the wireless roaming function of the USB wireless network card equipment. The beneficial effects of theinvention are as follows: the problems of long testing time and data deviation during repeated testing due to interference of the surrounding environment when the roaming function is tested in an openenvironment are solved, s a stable testing environment and method are provided, the testing efficiency is improved, repeated utilization rate of the testing environment is high, the testing cost is reduced, and obtaining of a relatively accurate testing result is facilitated.
Owner:SHENZHEN JIXIANG TENGDA TECH

Test system and test method for network mode optimization of 3G/4G router

The invention provides a test system and test method for network mode optimization of a 3G / 4G router. The test system comprises a 3G / 4G router supporting 3G / 4G switching, a programmable attenuator, aPC console, four external omnidirectional 3G / 4G antennas, a shielding box, a 3G / 4G signal generator, a femtocell, and a server erected on an internet interface of the femtocell. The beneficial effectsof the invention are that: the programmable attenuator and a 3G / 4G signal generator are used for controlling the signal intensity and the interference degree of the 3G / 4G router and testing the FTP performance under the corresponding signal intensity; compared with a test of finding points on an actual road, the accuracy of network mode selection can be more quantitatively measured, accurate datasupport is provided for development of the function, the test environment is stable, problems are easy to reappear, the test efficiency is improved, and the test cost is saved.
Owner:深圳万佳睿创技术有限公司

Earphone testing method and earphone

The earphone test method comprises the following steps: placing an earphone sample under a first standard test condition to obtain a first test parameter; placing the earphone sample under a second standard test condition to obtain a second test parameter; obtaining a transfer function according to the first test parameter and the second test parameter; placing the to-be-tested earphone under a second standard test condition to obtain performance test parameters of the to-be-tested earphone; correcting the performance test parameter according to the transfer function to obtain a standard testparameter of the earphone to be tested; calculating an EQ compensation parameter of the earphone to be tested according to the standard test parameter, wherein under a first standard test condition, the earphone sample extends into a test fixture configured with a standard microphone or an ear simulator, and under the second standard test condition, the earphone sample or the earphone to be testedand the standard microphone are arranged at intervals. Also disclosed is an earphone. According to the invention, the performance test parameter is converted into the standard test parameter simulating the real wearing effect according to the transfer function to carry out EQ compensation, so that the consistency of the earphone performance and the standard performance can be fully ensured.
Owner:GEER TECH CO LTD

Wifi-son wireless product test method

The invention provides a Wifi-son wireless product test method. In the method, shielding box test theoretical data is used and a villa test environment is established, and roaming verification test isexecuted under the environment; in the environment, an attenuator, n wireless terminals supporting 802.11kvr and a device supporting 802.11kvr roaming are placed in the shielding box, the attenuatorconnects a feed pint of a circuit board to a feeder line interface of the shielding box, and is connected with a PC host located at the outside of the shielding box; two ore more networked to-be-tested devices are placed in the shielding box, and corresponding tests are executed; and in the villa, one MPP and at least one MAP are arranged and networked, a dual-frequency user side moves in the villa to perform test of AP wireless roaming and frequency band switching. With the method provided by the technical scheme of the invention, the test environment is stable and easy to establish, the testmethod is convenient and easy to operate, the test data is reusable, stable and reliable, and test efficiency is high, and time can be saved.
Owner:SHENZHEN JIXIANG TENGDA TECH

Heart valve test device

The invention provides a heart valve test device. The heart valve test device is characterized by mainly comprising a liquid circular supply and pressure maintenance unit, a liquid temperature maintenance unit and a valve performance measurement unit, wherein the liquid circular supply and pressure maintenance unit comprises a liquid tank, a pump, a water channel and a liquid tank pressure gauge;the upper part of the liquid tank is communicated with the liquid tank pressure gauge; the lower part of the liquid tank is communicated with the pump; one end of the pump is communicated with a waterpipe which extends into the water channel; the water channel is internally filled with blood simulation liquid; the liquid temperature maintenance unit comprises a temperature control meter, a liquidtank heating device and a water channel heating device; the temperature control meter is connected with each of the liquid tank heating device and the water channel heating device; the temperature control meter is mounted at the bottom of the liquid tank and located at the opposite side of the valve performance measurement unit; and the liquid tank heating device and the water channel heating device are respectively mounted at the bottoms of the liquid tank and the water channel.
Owner:常州钟楼高新技术创业服务有限公司

Passenger vehicle PM test system and method

ActiveCN111610039AAccurate detectionCalculation of internal circulation purification efficiencyVehicle testingParticle suspension analysisParticulatesEnvironmental engineering
The invention relates to the field of environmental health and environmental protection in a vehicle, in particular to a passenger vehicle PM test method. The method comprises the following steps: S1,performing preprocessing: enabling the temperature and humidity of an environmental cabin and the PM2.5 concentration in a vehicle to meet preset requirements; S2, carrying out leakproofness testing;to be specific, evaluating the leakproofness of the whole vehicle through increment of the PM2.5 concentration in the vehicle; S3, testing the total purification efficiency: calculating the total purification efficiency; S4, testing a natural sedimentation rate: calculating the natural sedimentation rate; and S5, calculating the internal circulation purification efficiency; enabling the internalcirculation purification efficiency to be equal to a result of subtracting the natural sedimentation rate from the total purification efficiency and. Therefore, technical problems that an existing method for testing particulate matter is not suitable for aerosol particles with smaller diameters, and aerosol effective protection and filtering testing are difficult to carry out on a whole vehicle are effectively solved.
Owner:CHINA AUTOMOTIVE ENG RES INST

Filter automatic testing device and testing method

ActiveCN109270440ALow external error factorAvoid errorsElectronic circuit testingTest efficiencyCold test
The invention discloses a filter automatic testing device and a filter automatic testing method. By setting an automatic loading and unloading device, errors of test parameters or indexes brought in by manual operation are effectively avoided, and physical flaws brought by the manual operation can be avoided. An automatic calibration member is arranged in a test fixture, thus automatic test accuracy degree of a filter is improved, the de-embedding at different temperatures is realized, and the external error factors of the filter during the high and low temperature testing process are minimized. By arranging the automatic loading and unloading device in a high and low temperature test chamber, the test efficiency problem in the high and low temperature testing process is solved, the laborcost is reduced, a large amount of time consumed by clamping is shortened, the automatic feeding can be identified automatically, unqualified filters are directly placed separately, and the automaticdetection and screening are realized.
Owner:CHINA ELECTRONIS TECH INSTR CO LTD

Test device for automotive air conditioner air outlet assembly

The invention discloses a test device for an automotive air conditioner air outlet assembly. The test device for the automotive air conditioner air outlet assembly comprises a wind supply assembly, aheating box, a detection box and a circulation pipeline. An air inlet is formed in one side of the air supply assembly, and the air inlet is provided with an air blower; an air outlet is formed in theother side of the air supply assembly, the air outlet communicates with a heating box air inlet, a heating box air outlet is formed in the other side of the heating box, and the heating box air outlet communicates with a detection box air inlet; and the detection box is internally provided with a test platform communicating with the detection box air inlet, and the detection box is provided withan openable door panel, a control panel is arranged on one side of the detection box, and the detection box is internally provided with a refrigeration component. The test device for the automotive air conditioner air outlet assembly has complete functions and can perform air outlet test under high temperature, normal temperature and low temperature states, has a good fixing effect on an automotive air conditioner air outlet, and has high adaptability, a stable test environment and good test results.
Owner:NINGBO SUNNY MOLD

Portable vision tester

The invention discloses a portable vision tester. The portable vision tester comprises an eye lens, a lens disc, a letter disc, a decompression ball and a whistle. The portable vision tester is openedby medical staff, the lens in the lens disc is aligned with a lens barrel through a first motor box; an electric lamp is turned on, and a vision tester observes the letter orientation on the letter disc through the lens; when a vision tester clearly sees the orientation of the letter clearly; the pressure reducing ball which is correspondingly placed upwards is pressed; air in the air bag on thepressure reducing ball is extruded out; extruded air makes the whistle in the decompression ball make a sound. According to the existing vision testing, a visual chart generally is hung on a wall, anddirections of Es in a visual chart are distinguished; however, according to the detection method, an eyesight tester (especially primary and secondary school students) can feel pressure, the test process is interesting, and meanwhile, the light environment can influence the detection result, so that the measured eyesight is inaccurate. The portable vision tester enables the test result to be moreaccurate, is more convenient for medical staff to carry, and enables the detection result to be more accurate.
Owner:HENAN NORMAL UNIV

Test method and device, electronic equipment and computer storage medium

The embodiment of the invention relates to the technical field of testing, and discloses a testing method and device, electronic equipment and a computer storage medium, and the testing method comprises the steps: receiving a testing request sent by a client for any micro-service, wherein the any micro-service is a real service and / or a baffle service, the real service comprises a target service node pointed by a baffle pointer in the test link and a service of a service node located before the target service node pointed by the baffle pointer, and the baffle service comprises a service of a service node located behind the target service node pointed by the baffle pointer in the test link, and the test link comprises a plurality of service nodes; and then, sending a test request to the baffle middle station, so that the baffle middle station determines to forward the test request to the real service or the baffle service according to preset parameters, asserts the test request through the real service or the baffle service, and returns a corresponding assertion result; and marking the service nodes through pointers to achieve a pluggable baffle.
Owner:CHINA CITIC BANK

System and method for testing withstand voltage between DC voltage support capacitor terminals

The invention discloses a system and method for testing a withstand voltage between DC voltage support capacitor terminals, and the system comprises a DC charging power device and a testing and discharging circuit. The DC charging power device is used for converting AC power into DC power, and outputting the DC power to the testing and discharging circuit for connection. The testing and discharging circuit comprises a testing unit and a discharging unit, and the testing unit comprises one or more parallel testing modules, wherein each testing module comprises a DC fuse and a to-be-tested capacitor, which are connected in series. The discharging unit is used for discharging a capacitor which has completed the withstand voltage testing, and comprises a main discharging module and a fault discharging module. The system employs a modular power design, provides different test voltages for different capacitors, gives full consideration to the test safety and discharge effectiveness, is simple in test method, and is high in reliability of a testing result.
Owner:JIANGSU ELECTRIC POWER CO +2

Underwater light source testing device

The invention discloses an underwater light source testing device, which is used for testing performance parameters of an underwater light source. The underwater light source testing device comprises a pond, a first travel system, a second travel system, a lamp source system and a detection system, wherein the first travel system and the second travel system are arranged on the pond, so that motion in left and right directions, front and back directions and upper and lower directions and rotation in a horizontal direction can be achieved; the lamp source system is fixed on the first travel system; the detection system is fixed on the second travel system; and a lamp source emits light and irradiates the detection system to detect the performance parameters of the lamp source. Water in the used pond is stable in characteristic, small in fluctuation and stable in testing environment; the condition that the lamp source system and the detection system can carry out three-degree-of-freedom motion and rotation in the horizontal direction is ensured through the travel systems; the displacement coordinate of each degree of freedom can be accurate to 1mm and the rotation angle can be accurate to 0.1 degree; and underwater performance testing of the lamp source can be achieved through watertight devices of the lamp source system and the detection system.
Owner:ZHEJIANG UNIV +2

Test method based on assembly line constant temperature and humidity room

The invention discloses a test method based on a pipelined constant temperature and humidity room. The test method comprises the following steps that (1) safety confirmation is performed before start-up; (2) a test room is preheated; (3) material loading is performed; a product to be tested is arranged on the multilayer frame of the pipelined constant temperature and humidity room and pushed to a conveying belt to be fixed; (4) material feeding is performed; an inlet channel door is opened to form a material feeding channel, and an air curtain is also started to prevent loss of heat and moisture in the test room; and the power component of the pipelined constant temperature and humidity room is started to feed the multilayer frame to a second constant temperature and humidity test room and then the inlet channel door is closed; (5) testing is performed; constant temperature and humidity testing is performed according to the test requirements, and fluctuation and uniformity of temperature and humidity are observed; and (6) material discharging is performed; an outlet channel door is started to form a material discharging channel after completion of testing, and the air curtain is also started to prevent loss of heat and moisture in the test room; and the power component is started to move the product to be tested out of the test room and then the outlet channel door is closed.
Owner:SHENZHEN YUTAI TESTING EQUIP

Biped gait simulation and plantar pressure simulation system and application method

The invention discloses a both-foot gait simulation and plantar pressure simulation system and using method. The system comprises a mechanical structure system, a driving system, a sensing system, a control system, a machine-environment interaction system and a man-machine interaction system, wherein the mechanical structure system achieves gait simulation and plantar pressure reproduction, the driving system is the device providing power for the mechanical structure system so that a mechanical execution unit can move according to the expected requirement, the sensing system is composed of an internal sensor and an external sensor, obtains pressure, position and torque information of the internal and external environments and timely feeds the information back to the control system, the control system controls the mechanical execution unit to complete regular movement according to an operation instruction and the signals fed back by the sensing system, the machine-environment interaction system achieves connection and coordination of machines and equipment in the external environment, and the man-machine interaction system achieves connection of a man and machines and control over involved machines. The system can accurately achieve real-time and true reproduction of human gaits and plantar pressure, and can also set the stride and the stride frequency.
Owner:王华

LCD bare chip detection unit framework and detection method

The invention relates to an LCD bare chip detection unit framework and a detection method. The LCD bare chip detection unit framework comprises a bare chip carrying table, a light source, a camera, a signal unit and a control unit. The bare chip carrying table is used for containing a bare chip for testing. The light source is arranged below the bare chip carrying table and used for lighting the bare chip. The camera is used for acquiring images of the bare chip and sending the images to the control unit. The signal unit is connected with the bare chip carrying table through a connecting wire and controlled by the control unit. The control unit is usually a computer, is connected with the light source, the camera and the signal unit, can control the light source to send corresponding lighting, can control operation of the camera and receive the image sent by the camera, and can control the signal unit and receive response signals sent by the signal unit. Through the RGB three-color controllable backlight source, colorama lighting with testing signal image corresponding requirements is provided, colorama interference of a common testing light source is reduced, meanwhile, due to the fact that testing signals and testing modes are switched without any mechanism motion, a stable testing environment is provided, and testing accuracy and efficiency are improved.
Owner:苏州威盛视信息科技有限公司

Method for testing performance of Purlley four-way type HCA card

The invention provides a method for testing the performance of a Purlley four-way type HCA card. By conducting coordinative optimization on the stability of a test system and the performance of the HCA card, stable output of the performance in the HCA card test process is ensured, and the reliability of the HCA card performance test is improved. Thus, test time is indirectly shortened, test time investment is reduced, test efficiency is improved, great convenience is provided for test engineers, and repeated validation and the unreliability of data are avoided.
Owner:ZHENGZHOU YUNHAI INFORMATION TECH CO LTD

Stable air purifier testing device

The invention relates to the technical field of air purifier testing systems, in particular to a stable air purifier testing device. The stable air purifier testing device comprises a dust generatingdevice, a buffering device, a circulating device and a testing bin. The dust generating device is used for injecting artificial dust into the buffering device. A stirring mechanism for primarily dispersing the artificial dust is arranged in the buffering device. The circulating device is provided with a circulating cavity, an air inlet, an air outlet channel and an air return channel. A draught fan is arranged in the circulating cavity. The air inlet is formed between the buffering device and the circulating cavity. The air outlet channel is arranged between the circulating cavity and the testing bin. The air return channel is arranged between the circulating cavity and the testing bin. The air return channel is right opposite to the draught fan. By arranging the buffering device, the artificial dust can be primarily dispersed, and the dust outlet effect is better; by arranging the circulating device between the buffering device and the testing bin, the internal air circulation is formed in the device and little affected by the outside world, the stable testing environment can be provided for the testing bin, and the accuracy of the testing result is ensured.
Owner:DONGGUAN UNICLEAR NEW MATERIAL

A test device for automobile air conditioner air outlet assembly

The invention discloses a test device for an automotive air conditioner air outlet assembly. The test device for the automotive air conditioner air outlet assembly comprises a wind supply assembly, aheating box, a detection box and a circulation pipeline. An air inlet is formed in one side of the air supply assembly, and the air inlet is provided with an air blower; an air outlet is formed in theother side of the air supply assembly, the air outlet communicates with a heating box air inlet, a heating box air outlet is formed in the other side of the heating box, and the heating box air outlet communicates with a detection box air inlet; and the detection box is internally provided with a test platform communicating with the detection box air inlet, and the detection box is provided withan openable door panel, a control panel is arranged on one side of the detection box, and the detection box is internally provided with a refrigeration component. The test device for the automotive air conditioner air outlet assembly has complete functions and can perform air outlet test under high temperature, normal temperature and low temperature states, has a good fixing effect on an automotive air conditioner air outlet, and has high adaptability, a stable test environment and good test results.
Owner:NINGBO SUNNY MOLD

A kind of ptc core material with positive temperature coefficient characteristic and its manufacture and application

The invention provides a PTC (positive temperature coefficient) core material with positive temperature coefficient characteristics and a preparation method and an application thereof. The PTC core material is used for an over-current protection element and formed by composition of two metallic foil electrodes and polymer positive temperature coefficient conductive materials sandwiched between the two metallic foil electrodes, the polymer positive temperature coefficient materials are formed by composition of at least following materials as components, by volume percentage, 25.5%-29.5% of high polymer, 60%-72% of conductive filler, 0.05%-5% of peroxide crosslinker and 0.5%-10% of coupler, and the conductive filler, the peroxide crosslinker and the coupler are uniformly distributed in the high polymer. The PTC core material is small in resistance change, quite stable in high-and-low cycle life and environmental test, high in efficiency and low in cost, R100 / R0 is only 2-9 times, current characteristics of the over-current protection element are improved, and disadvantages of proneness to degradation, generation of internal stress and the like caused by radiation crosslinking are avoided.
Owner:上海神沃电子有限公司

A rapid crimp detection device for optical chips

The invention discloses a quick pressure-bonding detection device for an optical chip, which comprises a lower casing fixed with a lower PCB board; a chip carrier mounted on the top surface of the lower casing and evenly placing chips; a chip temperature control mechanism arranged in the lower casing and the lower PCB board Electrical connection; the upper cover is located above the lower shell and one end is hinged with the lower shell, and a locking mechanism is arranged between the upper cover and the lower shell; the floating positioning plate is installed on the bottom surface of the upper cover, the upper PCB board is fixed on the bottom surface, and the bottom surface is installed with a spring The probe; the optical power detection mechanism is installed on the bottom surface of the upper PCB board; the connector is arranged on one side of the lower casing to be electrically connected to the lower PCB board. When the upper cover of the present invention is closed, the chip is powered on, and the optical power detection mechanism detects the optical power of the chip at the same time, which improves the test efficiency and reduces the cost; the floating positioning plate is floatingly installed to adapt to different chips, and the spring probe is used to effectively ensure that the chip is pressed tightly , to avoid poor contact and uneven heat dissipation; only need to control the upper cover to realize the pressing and electrification of the chip, which helps to achieve standardized testing.
Owner:上海菲莱测试技术有限公司

Exchange rate management method and device and computer readable storage medium

The embodiment of the invention provides an exchange rate management method and device and a computer readable storage medium, the method is applied to an exchange rate management platform, and the method comprises the following steps: when exchange rate update time arrives, sending an exchange rate acquisition request to front-end processors of multiple financial institutions; receiving exchangerate data stored in the database and returned by the front-end processors of the plurality of financial institutions in response to the exchange rate acquisition request, and obtaining an exchange rate acquisition result; updating exchange rate data of each financial institution and an effective state of an exchange rate factor in an exchange rate table according to the exchange rate acquisition result, the exchange rate table being used for recording the exchange rate data of each financial institution, the exchange rate factor and the effective state of the exchange rate factor; and determining a platform reference exchange rate of the exchange management platform by using the updated exchange rate table, and using the platform reference exchange rate to process the received exchange transaction request. By adopting the exchange rate management method, the stability of the exchange rate in the exchange management platform test environment is ensured, and a stable test environment isfurther provided.
Owner:TENCENT TECH (SHENZHEN) CO LTD

MTP test method of VR

The invention discloses a VR MTP test method. The test method comprises the following steps: A, starting a high-speed camera to shoot; b, a three-axis high-precision rotary table simulates rotation of a human body; c, the VR equipment judges whether rotation is larger than the angle a (a is smaller than or equal to 0.1 degree) or not; d, if not, the three-axis high-precision rotary table continues to simulate rotation of the human body, and if yes, the VR glasses start rendering; and E, asynchronous time warping. According to the method, the whole process can be restored, the accuracy reaches 0.1 ms, the test environment is stable, it is guaranteed that an IMU (Inertial Measurement Unit) is not affected by the environment, system errors are reduced, the high-precision rotary table and an HMD (Head Mounted Display) move synchronously by adjusting the three-axis rotary table and truly simulating the head wearing condition, the high-precision rotary table, the HMD and a computer system form a human head motion simulation system, and the human head motion simulation effect is achieved. A computer system is connected with an HMD high-precision rotary table through a USB (Universal Serial Bus) to obtain motion data of the HMD and the rotary table in real time, the high-precision rotary table is composed of a base outer frame, a middle frame, an inner frame and a corresponding motor, the position precision of the three frames is smaller than or equal to + / -5 '', the repeated position precision is smaller than or equal to + / -5'', and the angular velocity precision is 0.001 degree / s.
Owner:上海鱼微阿科技有限公司

Device and method for verifying aircraft engine nacelle pressure relief system

The invention discloses a device and a method for verifying a pressure relief system of an aircraft engine nacelle, and belongs to the technical field of safety and reliability of aero-engines, an experimental platform comprises a pipeline leakage subsystem, a pressure relief door discharge subsystem, a flight environment simulation subsystem and a measurement and control subsystem, the experiment table can simulate and experiment the pressure relief performance of the nacelle pressure relief system under different flight environments and different pressure relief door structure parameters, realizes automatic acquisition and storage of each parameter, automatically controls and adjusts each component through the controller, and is simple to build, high in test precision, convenient and safe to operate and high in practicability. The method is suitable for researching main factors and mechanisms which influence the flow characteristics of the pressure relief device of the nacelle pressure relief system and influence the pressure change in the nacelle, and the experimental result can provide a design basis for the technical development of improving the pressure relief performance of the engine nacelle pressure relief system.
Owner:JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA
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