789results about How to "Avoid affecting test results" patented technology

The invention discloses a vehicle automatic-drive switching device and method based on distracted driving behavior distinguishing. The device comprises a detection unit and a control unit. The input end of the detection unit is connected with a speed sensor, a three-axis acceleration sensor, a steering wheel turning angle sensor, a steering wheel gripping force sensor, a touch sensor, a ranging sensor, a heart rate sensor, a vehicle data recorder and a GPS. The control unit receives significant variable data and time data of a timer, establishes the relation between vehicle automatic-drive probability dependent variables and distracted driving behavior index independent variables on the basis of a logistic regression model, and works out the vehicle automatic-drive probability. Whether given conditions are met or not is judged through a judging condition I and a judging condition II of a condition judging program, if the judging condition I is met, an automatic early-warning control switch is triggered, and if the judging condition II is met, a vehicle automatic-drive control switch is triggered.

The invention discloses a cylinder type soil sampling device for detection. The cylinder type soil sampling device comprises a transverse plate and a sampling cylinder, wherein a spiral shaft is arranged between a top plate and the transverse plate; a bearing is arranged at the side wall of a lifting rod; a slide sleeve is arranged on the spiral shaft, and is connected with the spiral shaft in a thread matching way; the outside wall of the slide lifting rod is connected with the inner wall of a rotary sleeve pipe through a spline; the interior of the side wall of the sampling cylinder is provided with an annular cavity which is coaxial with the sampling cylinder; an annular press plate is arranged at the bottom part of the annular cavity; a plurality of inclined through holes are formed inthe inside wall of the annular cavity; a guide rod is arranged in each inclined through hole, the upper end of each guide rod is connected with the inclined surface of an annular press plate througha slide mechanism, and the lower side of the annular press plate is connected with the bottom wall of the annular cavity through a reset spring. The cylinder type soil sampling device has the advantages that the structure is simple, the sampling efficiency is higher, the bending and breaking of the sampling cylinder are avoided, the disengaging from the sampling cylinder due to moving-up of sampling soil is avoided, the labor intensity is lower, the operation is simple and convenient, and the practicality is stronger.

The invention discloses a database performance test system. The database performance test system comprises a test case creating module, a test executing module and a data analysis reporting module, wherein the test case creating module is used for determining a current test case group which comprises one or more operation types of test cases; the test executing module is used for conducting concurrent test on a target database according to all the test cases in the current test case group determined by the test data creating module and obtaining the score of each test case in the current test case group on the target database; the data analysis reporting module is used for calculating out the total score of the target database according to set weight of all the operation types on the basis of the scores of all the operation types of test cases in the current test case group on the target database. The database performance test system can self-define test data and test cases, rapidly and easily test database performance, and conduct comparison test on various types of databases.

This invention relates to a error tolerant computer system hinge fault injection device and method, wherein the device adopts IC test clamper and injection aim system chip for hinge connection; the host machine is connected to injection control single machine circuit through communication circuit; the injection control single machine circuit is separately connected to multi-path output selector, injection or test FPGA control circuit, aim trigger FPGA control circuit and monitor control single machine circuit.

The invention discloses a thin plate side wall smoothness detection device, which relates to the field of plate detection equipment. The thin plate side wall smoothness detection device comprises a working table; a first cross bar and a second cross bar are arranged on the working table; sliding blocks are arranged on the first cross bar and the second cross bar respectively; a connection rod is arranged between the sliding blocks; a movable block is arranged on the connection rod; the upper end of the movable block is provided with a fixing block; the fixing block is internally provided with a long rod; a baffle and a spring are arranged on the long rod; two ends of the long rod pass through the side wall of the fixing block respectively to be arranged outside; one end of the long rod is provided with a pencil head and the other end is provided with a detection head; the working table is provided with a writing plate; the pencil head is contacted with the writing plate; the detection head is contacted with the side wall of the thin plate; and a fixing device is arranged on the thin plate. According to the thin plate side wall smoothness detection device with the above design, the structure is simple and reasonable, the cost is low, the operation is convenient, and the smoothness condition of the thin plate side wall can be presented more intuitively.

The invention discloses a river water sampling device at different water depths. The river water sampling device comprises a transverse plate and a sampling barrel, wherein a vertical spiral shaft isarranged on the transverse plate; a movable sleeve which is connected with the spiral shaft in a threaded fit mode is arranged on the spiral shaft; the outer side wall of the movable sleeve is connected and fixed with a fixed sleeve arranged on the outer side wall of a supporting lifting tube through a fixed connecting rod; the sampling barrel comprises an inner barrel and an outer barrel; a rotary shaft is arranged inside the supporting lifting tube; the bottom end of the rotary shaft passes through the top wall of the outer barrel and is fixedly connected with the top wall of the inner barrel; a plurality of partitions which are parallel are arranged on the inner part of the inner barrel for dividing the inner barrel into a plurality of sampling cavities; a first water inlet is formed inthe side wall of each sampling cavity; a plurality of second water inlets which are in one-to-one correspondence to the first water inlets are formed in the side wall of the outer barrel; and a rotary rod is further arranged at the top end of the rotary shaft. The river water sampling device is simple in structure, is relatively high in reliability of sampled river water, is simple, convenient and quick to operate, can sample river water at different depths, and is relatively high in practicability.

The invention discloses a wear resistance detecting device for automobile accessories. The wear resistance detecting device for the automobile accessories comprises a base; a groove is formed in one side of the base; a first driving motor is mounted in the groove; an output shaft of the first driving motor is connected with an air bellow in a sleeving manner; the outer wall of the top of the air bellow is welded with an air guide pipe; a baffle plate which is welded perpendicular to the base is mounted at one end, far away from the air bellow, of the air guide pipe; a vent pipeline is arranged in the baffle plate in the height direction of the baffle plate; the vent pipeline communicates with the air guide pipe; a plurality of groups of vent holes which communicate with the vent pipeline are formed in one side of the baffle plate; a dust collecting groove is formed in the surface of the base; a supporting plate is vertically welded on the surface of the side, far away from the baffle plate, of the base; and a mounting groove is formed in the surface of the side, close to the baffle plate, of the supporting plate. The wear resistance detecting device for the automobile accessories is novel in design; debris on the surface of a component can be blown off in time; a detecting result is prevented from being influenced because of the increment of friction force between a friction mechanism and the component caused by the debris; the pressure on the component of a friction plate can be adjusted manually; and the wear resistance detecting device for the automobile accessories is beneficial to obtaining a detecting result.

The invention relates to a device for testing the mechanical response of surrounding rock and an anchoring body under the action of a dynamic load and a static load. The device comprises a frame and an arc-shaped channel located in the frame, wherein a lower support plate used for supporting the arc-shaped channel is arranged under the arc-shaped channel, and the lower end of the lower support plate is connected with a bottom support plate; the arc-shaped channel comprises a sample channel body located in the middle of the arc, a left channel body and a right channel body, the left channel body and the right channel body are located on the left side and right side of the sample channel body, a top end limiting plate is arranged above the sample channel body, an impact load loading device is arranged on the outer side of the top end limiting plate, a left force transmission plate and a right force transmission plate are arranged in the left channel body and the right channel body respectively, the right end of the left force transmission plate and the left end of the right force transmission plate are connected with the left end and right end of the sample channel body respectively, and the left end of the left force transmission plate and the right end of the right force transmission plate are connected with a left loading device and a right loading device respectively. By the adoption of the device, the practical working environment of the surrounding rock and the anchoring body can be accurately simulated, and the processes of fracture evolution of the surrounding rock and the anchoring body under the action of the dynamic load and the static load can be directly observed and tested.

The invention relates to a method for sound source localization based on horizontal audiometry. The method comprises the following steps: (1) in a standard sound-insulating dark room, eight loudspeakers are distributed uniformly in a circle with a 50 cm radius, a test subject is the centre of the circle and at the same height as the circle, and the included angle of two adjacent loudspeakers is kept at 45 degrees; (2) eyes of the subject are covered with a black fabric; (3) one of the eight loudspeakers is randomly allowed to make a sound for 40 microseconds with a time interval of 5 seconds, totally 100 times in one test cycle; and (4) the total error is calculated, which is the sum of absolute values of difference between actual position and estimated position of the sound source in the total 100 tests, and the test accuracy rate is calculated, which is the percentage of times when the subject accurately judges the sound source position. The method is simple and feasible, and has high test accuracy and complete functions.

The invention discloses a method for testing the compression performance of a carbon-fiber reinforced resin-based thin-wall composite pipe. A mechanical compression testing piece of the carbon-fiber reinforced resin-based thin-wall composite pipe is prepared with the cementing connection technology. Firstly, the compression testing piece is installed and clamped on a mechanical testing machine; secondly, the compression testing piece is loaded; finally, a breaking load and the corresponding deformation value are obtained. By means of the method, the problem that an existing mechanical performance testing method of a carbon-fiber reinforced resin-based composite pipe material is not suitable for the thin-wall composite pipe is solved, buckling failure of the pipe in the testing process is avoided with a novel compression test piece preparing method, and a new test method is provided for the carbon-fiber thin-wall composite pipe. The practical compression performance of the carbon-fiber reinforced resin-based thin-wall composite pipe can be reliably reflected with the method.

A method for burying optical fiber and its packaging material includes coating adhesive uniformly on surface of optical fiber to be buried and optical fiber sensing element, soaking it in silane coupler after said adhesive is cured, drying up coupler on optical fiber in the air then positioning it in mould, setting portion to be buried on central axle of mould and adding silane coupler in packaging material to make curing-forming. The burying structure for realizing said method is also disclosed.

The invention discloses a micro-fluidic-chip device and method for particle-and-cell sequence isolation and enumeration based on nanometer-micron channel combination. A micro channel of the micro-fluidic-chip device comprises a sample feeding channel, a main channel and a plurality of sample discharging channels, wherein a first electric-field isolation and enumeration channel is provided with anisolation-and-enumeration anode liquid storage hole, and is perpendicularly communicated with the main channel through a first detection door; a second electric-field isolation and enumeration channelis provided with an isolation-and-enumeration cathode liquid storage hole, and is perpendicularly communicated with the main channel and a flow field focusing channel through a second detection door;platinum electrodes are inserted into the isolation-and-enumeration anode/cathode liquid storage holes, the anode of a direct-current power source is connected with the first electric-field isolationand enumeration channel, and the cathode of the direct-current power source is connected with the second electric-field isolation and enumeration channel. According to the micro-fluidic-chip device and method for particle-and-cell sequence isolation and enumeration based on nanometer-micron channel combination, enumeration can be achieved when to-be-detected cells do not enter the detection doors, and under the condition that to-be-isolated cells are not damaged, cells accurately flow into the different discharging channels under the dielectrophoresis force.

The invention relates to a migration transfer characteristic test system of fragments of a reactor containment and a test method thereof. The system comprises a test segment module composed of a waterchannel, a rectifying grid, a filter screen and related equipment, a flow rate adjusting module composed of a water tank, a main water pump, an electric valve and related pipelines and instruments, acooling module composed of a cooling water pump, a heat exchanger, a cooling tower and related pipelines and instruments, a thermotechnical hydraulic parameter measuring module composed of a flowmeter, a temperature sensor, a pressure sensor and a liquidometer, an image collecting module composed of a high-speed camera, a local area network computer and related image processing software, a flow field information collection module composed of PIV equipment, a local area network computer and related flow field processing software and a remote control module composed of a programmable logic controller, a water pump, an electric valve and related equipment. The system simulates a ground water flow velocity field of the containment accurately after loss of coolant accident and acquires characteristic parameters of different fragments migrating in water.

The invention discloses an environmental soil detection device, comprising a base, the lower surface of the base is provided with supporting legs, the front side of the detection box on the upper surface of the base is provided with an opening, one side of the opening is hinged to a sealing plate, and the detection box A workbench is supported on the support column at the bottom of the interior, a groove is provided in the middle of the upper surface of the workbench, and a heating device is provided in the middle of the lower surface of the workbench. Both the input end and the input end of the electric telescopic rod switch are electrically connected to the output end of the external power supply, the output end of the electric telescopic rod switch is electrically connected to the input end of the electric telescopic rod switch, and the air inlet of the gas chromatograph on the base is connected to the Test gas port connections inside the box. The environmental soil detection device is simple to operate and convenient to move. The pressure plate flattens the sample and is then heated by the heating device. The efficiency of organic matter volatilization is greatly improved, and the sealing effect is good.

The invention discloses a test device and method for researching friction characteristics between a tire and an actual pavement, and belongs to the technical field of detecting equipment. Actual working conditions of the tire with load running on different pavements are well simulated through mechanical structures such as a loading sleeve, a loading sleeve base, a rotary arm and a rack, the test device and method for researching friction characteristics between the tire and the actual pavement can be used for testing a friction factor between the tire and the pavement and researching wear pattern between the tire and the pavement, compression amount of a loading spring can be adjusted through a loading screw according to requirements, and thus a test load is adjusted; meanwhile tire running speed is adjusted through a transmission system; changing is conducted on a slip rotary rate or a slip shift rate between the tire and a pavement through adjusting a connected relation between a tested wheel and an auxiliary wheel, multiple kinds of running conditions of the tire on the pavement are simulated, data such as the load, a rotate speed and a torque are detected in real time through asensor, and thus the friction factor between the tested tire and the tested pavement is obtained by formula calculation.

The invention discloses a rapid collecting device for deep soil, and relates to the technical field of soil detection. The rapid collecting device comprises a sampling rack, a sampling depth control mechanism, a soil sampling cylinder assembly, a drill bit base assembly and drill bit assemblies. The rapid collecting device has the technical advantages that the device is applicable to collecting soil of different geological types, and can collect soil in deep soil layers; when the soil sampling cylinder assembly goes deep enough into soil, the multiple drill bit assemblies are controlled to pinch off the lower end of a soil column, the lower end of the soil column is supported, and the phenomenon that the soil column is extracted and pulled apart when the soil column is extracted out upwards is avoided. The sampling depth control mechanism is connected to the upper end of the sampling rack, the two ends of the soil sampling cylinder assembly are in sliding-fit connection with the two ends of the sampling rack, the middle end of the soil sampling cylinder assembly is in threaded connection with the sampling depth control mechanism, the drill bit base assembly is connected to the lower end of the soil sampling cylinder assembly, and the four drill bit assemblies are evenly wound around the lower end of the drill bit base assembly.

The invention relates to the valve detection processing field, and discloses a valve tightness detecting device. The valve tightness detecting device comprises a detecting table and an iodine solutionbox; a frame is arranged on the detecting table, a first pressing plate and a second pressing plate are glidingly connected to the frame, and a pull rope is connected to the middle of the first pressing plate and the second pressing plate; a fixed pulley, a first rotary wheel and a second rotary wheel are rotationally connected to the frame; the pull rope strides over the fixed pulley, the firstrotary wheel is connected with the second rotary wheel through a belt; a roll belt are wound between the first rotary wheel and the second rotary wheel, and a wafer is arranged on the roll belt; a first plug rod is connected to the first pressing plate, and a second plug rod is connected to the second pressing plate; plug holes are arranged at the parts where the detecting table is faced to the first plug rod and the second plug rod; a detecting site is arranged between two plug holes, and provided with a fluid leaking hole; the iodine solution box is connected with a fluid pipe, a free end ofthe fluid pipe is located at the upper part of the detecting site, a switch is arranged on the fluid pipe and connected with a torsional spring. Through the invention, the detecting efficiency and accuracy of the valve can be improved.

The invention provides a supporting component used for a wind tunnel test, and relates to the field of the wind tunnel test. According to the supporting component, a curved tail supporting rod supporting structure is provided, and the tail supporting rod is designed into at least three sections which are different in axis so that the airflow obstruction reverse interference of the tail supporting rod for a test model can be reduced, and the pneumatic data of the test model can be more accurately measured; the angle and the length of each section of the tail supporting rod are changed so that the tail supporting rods of a separating test model and a separated test model which are close to each other are enabled to maintain a large distance in space, and mutual interference in the separating test process can be avoided and influence on the test result can be avoided; meanwhile, a tail supporting rod fixing part matched with the tail supporting rod is designed, a measurement component of certain height is fixedly installed, and measurement of the distance between the model reference center of gravity and the balance calibration center of the wind tunnel test model can be realized through the measurement component and the measurement accuracy of the whole device can be guaranteed within 0.1mm.

The invention provides a multi-point gas monitoring device, comprising: a selective sampling cylinder, a plurality of sampling connecting pipes, a rotating connecting pipe, a driving part, a first gas detection unit, a first power unit, a second power unit, and a plurality of sampling One end of the connecting pipe is installed on the air inlet surface of the selective sampling cylinder and forms a circle, one end of the rotating connecting pipe is in contact with the air inlet surface of the selective sampling cylinder, the other end communicates with the first gas detection unit, and the driving part is connected with the rotating The tube drive connection is used to drive the intake end of the rotary connection tube to rotate around the circle formed by a plurality of sampling connection tubes on the air intake surface, and connect the rotary connection tube and each sampling connection tube in turn. The first power unit and The sampling barrel is selected to be connected, and the second power unit is connected to the gas path connected with the rotating connecting pipe. The present invention can carry out uninterrupted sampling detection on the components of the gas at different positions, such as the content of water and oxygen, harmful gases, and cleanliness. And the measurement accuracy is high, the volume is small, and the cost is low.