32results about How to "Test results are accurate and reliable" patented technology

The invention discloses a device and method for testing a proximity sensor of a mobile terminal. The testing device comprises a storage module, a control module, a judgment module and an alarm module. The storage module is used for storing the screen-off distance, the screen-on distance, the screen-off time and the screen-on time. When the mobile terminal is in a non-screen locking state and the screen of the mobile terminal is lightened, the control module is used for controlling an analog barrier to firstly move to one screen-off position, and the judgment module is used for judging whether the screen of the mobile terminal is darkened within the screen-off time duration or not, wherein if not, the alarm module is controlled to give an alarm; and if yes, the control module is used for controlling the analog barrier to move to the screen-on position; the judgment module is used for judging whether the screen of the mobile terminal is lightened or not within the screen-on time, wherein if not, the alarm module is controlled to give the alarm. The proximity sensor of the mobile terminal can be automatically tested, and the testing result is accurate and reliable.

The invention discloses a leaf spring assembly fatigue test bench. The leaf spring assembly fatigue test bench mainly comprises a base, a movable plate, guide columns, a tested leaf spring assembly, guide rails, trolley wheels, trolleys, a mandrel, and an air cylinder or oil cylinder; the air cylinder or oil cylinder is fixed on the base, and the piston rod of the air cylinder or oil cylinder is fixedly connected with the movable plate; the movable plate can slide along the guide columns under the driving the piston rod of thee air cylinder or oil cylinder; the trolleys are with provided with the trolley wheels; and the trolley wheels are arranged in the guide rails and can slide along the guide rails. When a test is carried out, the lifting lugs of the leaf spring assembly are installed on the trolleys, and the middle of the leaf spring assembly is fixedly connected with the movable plate, and then, the air cylinder or oil cylinder is started to work, and the real driving condition of a vehicle can be simulated, and a fatigue resistance impact test can be performed on the leaf spring assembly, and test time and the magnitude of load can be controlled by a computer. The leaf spring assembly fatigue test bench has the advantages of simple structure, accurate and reliable test results, convenient operation, high efficiency, high adaptability and the like. The leaf spring assembly fatigue test bench can be applied to fatigue resistance impact tests of leaf spring assemblies of different specifications.

The invention discloses a device for tensile test of a high temperature oxidizable metal material, comprising: a vacuum chamber, a vacuum chamber door, a vacuum system, a temperature control unit, anupper beam loading rod, an upper load transfer frame, a lower beam fixing rod, a lower load transfer frame, an upper ball hinged support, a lower ball hinged support, an upper clamp and a lower clamp;the vacuum chamber door is provided with a transparent observation window and is hinged to the vacuum chamber; the top of the vacuum chamber is a detachable cover; the vacuum system communicates withthe vacuum chamber; the temperature control unit is used for heating a tensile specimen and measuring the temperature of the tensile specimen; and the upper beam loading rod, the upper load transferframe, the lower beam fixing rod, the lower load transfer frame, the upper ball hinged support, the lower ball hinged support, the upper clamp and the lower clamp are disposed inside the vacuum chamber. The invention realizes the automatic centering of the sample through the synergistic relationship of the "circular collimation track-upper ball hinged support and lower ball hinged support-upper clamp and the lower clamp" to ensure that the axial force is uniform, Ensure accurate, reliable results and good reproducibility.

The invention relates to an automatic positioning and interpreting instrument and method adopting natural gamma rays of formations and used for down-hole strings, and mainly solves the problem of large depth measuring error during test of a conventional magnetic locator. The automatic positioning and interpreting instrument is characterized in that a magnetic positioning tester (2) and a gamma ray curve tester (3) are connected to the lower part of an upper joint (1) sequentially, a centralizer (4) is connected to the bottom of the gamma ray curve tester (3), a weight bar (5) is connected to the bottom of the centralizer (4), a steel wire rope is connected to the upper part of the upper joint (1) and is connected to a double-drum winch (7) after bypassing a top sheave (6). Errors caused by cable stretching can be avoided when the instrument is adopted to measure the depth, cable depth correction is not required, and a result is more accurate.

The invention discloses a layered in-situ loess collapsibility coefficient testing device and method. The layered in-situ loess collapsibility coefficient testing device comprises a support, a force measuring ring, a force transferring mechanism and a pressure bearing mechanism, wherein a jack is arranged on the support; the pressure bearing mechanism comprises a settling plate and a bearing plate which are positioned on the bottom surface; a permeable stone is mounted between the bearing plate and the settling plate; permeable holes are formed in the bearing plate and the settling plate. The layered in-situ loess collapsibility coefficient testing method comprises the following steps: digging an exploratory well, mounting the pressure bearing mechanism at one end of the force transferring mechanism, putting the pressure bearing mechanism into the exploratory well, mounting the force measuring ring at the upper end of the force transferring mechanism, loading the force measuring ring by the jack in a grading manner till the maximum load is reached, flooding and observing additional settlement, recording the additional collapsibility amount of the loess layer, increasing the depth of the exploration well, repeating the steps to obtain the additional collapsibility amount of each loess layer, calculating the loess collapsibility coefficient, calculating the loess collapsibility amount by referring to a national standard, and evaluating the loess collapsibility. By the layered in-situ loess collapsibility coefficient testing method, the disturbance of the original shape of soil in the sampling process is overcome, a test result is very close to an actually measured result of a flood test, and the test period is short, the expense is low and the water consumption is low, so that the layered in-situ loess collapsibility coefficient testing method has a very high popularization value and a very high application value.

The invention provides a near infrared spectrum technology based skin lipid content detection method, belongs to the field of study on near infrared spectrum technology, and aims at solving the problems of slow measurement and simple test items in the prior art as well as quickly and accurately synchronously measuring a plurality of components of the skin lipid content. The method comprises the steps of 1, acquiring near infrared spectrum information of a skin lipid sample; 2, measuring the corresponding skin lipid content by SEBUMENTER; 3, processing the spectrum information obtained in step 1; 4, building a skin lipid predication model; 5, detecting the skin lipid of other people, besides the model sample through the model after the predication model is built. As the achievement of the method, a skin detector based on the principle can be developed so as to promote to develop a new skin detector market.

The invention discloses a full-automatic control chair seat impact resistance test device which comprises a bottom plate, a support bracket, a hammering mechanism and a control cabinet, wherein the control cabinet is used for controlling the hammering mechanism to act; the support bracket comprises two stand columns and a support cross beam which is arranged at the tops of the two stand columns; a plurality of chain wheels are arranged on the lower side of the support cross beam; the hammering mechanism comprises a hammering air cylinder, a balancing weight and a hammering chain; the direction of a piston rod of the hammering air cylinder is upward; one end of the hammering chain is connected with the piston rod of the hammering air cylinder and the other end of the hammering chain bypasses the chain wheels to be connected with the balancing weight; a chair fixing position is arranged on the bottom plate; the position of the chair fixing position corresponds to the position of the balancing weight; a PLC is arranged in the control cabinet; an operation panel is arranged at the top of the control cabinet; the PLC is electrically connected with the hammering air cylinder through an electromagnetic valve. The full-automatic control chair seat impact resistance test device and test method are high in stability in test process and accurate and reliable in test result, and can be used for randomly adjusting the hammering force to be suitable for different models of chairs.

The invention relates to a collecting natural gas reserve air layered yield-power determination and dynamically monitoring geochemistry method. It comprises the following steps: 1) extracting each layer natural gas of the gas recovery well, choosing and computing to obtain each reserve air layered natural gas characteristic hydrocarbon finger mark parameter; 2) extracting each layer natural gas of the gas recovery well, forming analog mixed gas sample by different mixing model and separately doing chromatographic finger mark analysis to obtain different mixing ratio of each reserve air layered natural gas and the chemistry model parameter of the characteristic hydrocarbon finger mark parameters; 3) adopting non-linear artificial nerve network intelligence learning algorithm to establish mathematical model and measuring model plate; 4) collecting the gas recovery sample to do chromatographic finger mark analysis to obtain the corresponding characteristic hydrocarbon finger mark data; 5) computing to obtain the yield-power contribution of the gas recovery each reserve air layered natural gas.

The invention relates to a strength test method and test equipment, including the following steps: adding load to the part to be test, keeping the load for the set time, then removing the load; testing the displacements of test point during the process from initially adding the load to removing the load; drawing the displacement curve according to the test results and determine whether the part isqualified with the difference value between the displacements of the first test point at the load adding initial stage and the second test point at the stage of removal load for restoring. The strength test method and test equipment provide a new approach for strength test and assessment of moving parts such as seat, which either avoid the defect that is difficult to control the definition of deformation dimension in traditional deformation measurement, or avoid the limitation of the paste parts selection when pasting stress film for test, the strength test method has the characteristics of simple operation, easy implementation, accurate and reliable test results, low cost.

The invention discloses a testing method and device of the screen swiping sensitivity. The method comprises the steps that an event data flow corresponding to a uniform rectilinear swiping screen event is injected into a system to be tested, and the corresponding relation between the event data flow and the injection time is recorded; when screen data change due to the fact that the event data flow is injected, the time is obtained; according to the time when the screen data change, the current position of a touch point when the screen data change is obtained from the corresponding relation between the event data flow and the injection time; when the preset uniform rectilinear swiping screen event starts, the distance between the starting position of the touch point and the current position is calculated, wherein the distance is the delay distance which reflects the screen swiping sensitivity. According to the testing method and device of the screen swiping sensitivity, manual operation is not needed in the testing process, the testing method is scientific, objective and reusable, and the testing result is accurate, reliable and reproducible.

The invention discloses a full-automatic control chair back crushing resistance and fatigability test device which comprises a support bracket, a tensioning bracket, a tensioning mechanism and a control cabinet, wherein the tensioning bracket comprises four first stand columns and a plurality of support frames; the tensioning mechanism comprises a tensioning air cylinder, a balancing weight, two tensioning support rods which are arranged on one side of the balancing weight and an upper tensioning wheel and a lower tensioning wheel, which are arranged between the two tensioning support rod; a tensioning chain is connected with the balancing weight; the tensioning chain bypasses each of the upper tensioning wheel and the lower tensioning wheel to be connected with the chair back; the support bracket comprises a plurality of stand columns and a top frame and a bottom frame, which are arranged between the second stand columns; a turnover platform for supporting the chair is arranged in the top frame; a PLC is arranged in the control cabinet; an operation panel is arranged at the top of the control cabinet; the PLC is electrically connected with the tensioning air cylinder through an electromagnetic valve. The full-automatic control chair back crushing resistance and fatigability test device and test method are high in stability in test process and accurate and reliable in test result, and can be used for testing various models of chairs.

The invention discloses a camera module pressure test structure, and aims to provide a camera module pressure test structure which is convenient to use, easy to control and adjust and high in test precision. The structure comprises a mounting seat, a guide rail assembly, an upper bearing seat, a lower bearing seat and a driving module are arranged on the mounting seat; a lead screw is arranged between the upper bearing seat and the lower bearing seat in a matching mode. The guide rail assembly is provided with a lead screw seat in a sliding mode, the lead screw is arranged on the lead screw seat, the lead screw is provided with an ejector block, the ejector block is provided with a pressure sensor, the pressure sensor is provided with an ejector pin, and the driving module is in transmission fit with the lead screw. The structure is applied to the technical field of pressure testing structures.

The invention discloses a testing method of lactate content in zinc lactate, comprising the following steps of a testing experiment for a zinc lactate sample and a corresponding blank experiment and calculating the lactate content according to the volume difference of titration solutions consumed in the two experiments as well as other data. The method is characterized in that the testing experiment for testing the zinc lactate sample comprises the following flows: taking a zinc lactate sample; adding a standard potassium dichromate solution and a sulphuric acid solution; heating to 80 DEG C and keeping a constant temperature; cooling to a room temperature; diluting; adding potassium iodide; sealing and arranging in a dark place; diluting; titrating with a standard titrating solution of sodium thiosulfate till the diluted solution turn to yellow; adding a starch indicator solution; and finally continuously titrating with the standard titrating solution of sodium thiosulfate until blue color is disappear and bright green color appears and keeps unchanged for 5 minutes. The invention has accurate and reliable testing result, good reproducibility, obvious endpoint coloration, simple operation and high promotion rate and popularization rate and has the action of preventing organic zinc adulteration.

The invention discloses a miniature sample gas automatic sample injection system for gas chromatography. The system comprises a filter, a micro-metering valve which is connected with the filter through a pipe, a first electromagnetic valve which is connected with the fine adjustment valve through a pipe, a valve opening mechanism which is connected with the first electromagnetic valve through a pipe and is connected with an external detection mechanism, a pressure sensor which is connected with the through valve mechanism through a pipe, a first flow path and a second flow path which are connected with the pressure sensor; a second solenoid valve connected to the first flow path, a gas outlet pipe which is connected with the second electromagnetic valve through a pipe, a temperature sensorwhich is connected between the through valve mechanism and the pressure sensor, and an automatic controller which is electrically connected with the micro-metering valve , the first electromagnetic valve, the through valve mechanism, the pressure sensor, the second flow path, the first flow path, the second electromagnetic valve and the temperature sensor. According to the invention, through positive pressure, negative pressure and normal pressure sample injection, the tested gas entering the quantitative loop of the gas chromatograph meets the analysis requirements of different sample quantities in different working conditions, and the test result is accurate and reliable.

The invention provides a testing device and method for the refrigerating capacity of a movable air conditioner. The testing device for the refrigerating capacity of the movable air conditioner comprises an airtight indoor side chamber (1) and an airtight outdoor side chamber (2). The indoor side chamber (1) and the outdoor side chamber (2) are separated through a middle partition wall (3); an air balance hole (4) communicating with the indoor side chamber (1) and the outdoor side chamber (2) is formed in the middle partition wall (3); the size of the air balance hole (4) can be adjusted; the indoor side chamber (1) is used for storing the movable air conditioner; and an air exhaust hole (5) used for exhausting outlet air of the movable air conditioner (6) to the outdoor side chamber (2) is further formed in the middle partition wall (3). The testing device for the refrigerating capacity of the movable air conditioner can test the refrigerating capacity of the movable air conditioner through a heat balance method, and the testing result is accurate and reliable.

The invention discloses a testing device and method for measuring the binding power of a bolt and ice, and relates to a binding power testing device and method. The invention aims to solve the problemof poor accuracy of an ice and bolt bonding force test result of an existing test device. An upper cylinder and a lower cylinder are connected by a partition plate, a top cover covers the upper cylinder, a screw vertically penetrates the top cover and extends into the upper cylinder, the screw is screwed at the upper end and the lower end of the top cover through nuts, and a connecting pin horizontally penetrates the lower cylinder. Water is added into the upper cylinder, the lower end of the screw rod is immersed into water, freezing is performed after he measured length is adjusted, after freezing, the nut is unscrewed, the top cover is taken off, a mold is placed in a low-temperature test box, the hole of the lower cylinder is connected with the hole of the base of the low-temperaturetest box through a connecting pin, the temperature of the low-temperature test box is adjusted to a measured temperature, and tensile force is applied to the measured screw two hours later, so that the obtained ice shear bonding force between ice and the measured screw is more accurate. The testing device and the method for measuring the binding power of the bolt and the ice are used for measuringthe binding power of the ice and the bolt.

The invention relates to a system and a method for testing shifting force at a shifting block in a working state of a transmission and belongs to the field of transmission test analysis. The system isformed by a calibration device, 2 to 4 strain gauges and a test device. In the working state of a rack or a whole vehicle, the system for testing shifting force at the shifting block has compact andsimple structure, the system can be effectively used for monitoring the gear shifting force in the gear shifting process of an AMT transmission, according to the testing method, a strain gauge is pasted at the shifting block according to a Wheatstone half-bridge or full-bridge, and a calibration device is used for testing the calibration relation between the gear shifting force and strain. The calibrated shifting block is used, the strain value of the shifting block in the gear shifting process is tested in the working state of the whole vehicle or the rack, the gear shifting force is calculated according to the calibration relation, and the test result is accurate and reliable.

The invention relates to the field of conductive yarn, in particular to a testing method for yarn evenness. The method comprises the following steps: firstly, pulling out conductive yarn to be testedto a yarn evenness testing device, and then connecting the conductive yarn to an electrode system; then connecting the electrode system to a data collection system which collects voltage or current signals corresponding to the conductive yarn and sends the voltage or current signals to a computer; finally, ensuring that the computer computes the yarn evenness of the conductive yarn according to the received voltage or current signals. The method provides a novel method for testing the yarn evenness of the conductive yarn, and has significant effect on the testing and research of evenness of the conductive yarn.

The invention belongs to the technical field of textile belts and relates to a novel wear resistance testing device. The device comprises a fixing piece, a supporting piece, a weight balancing piece and a base body; the fixing piece and the supporting piece are both erected on the base body; the fixing piece is provided with a first connecting portion detachably connected with one end of a textilebelt; a strip-shaped through hole allowing the textile belt to pass through is formed in the supporting piece; the weight balancing piece is provided with a second connecting portion detachably connected with the other end of the textile belt; the base body is provided with a base table; an arc-shaped recessed area is formed in the top of the base table; the base body is rotatably provided with aswing seat which is driven by a first driver to perform reciprocating swing; the swing seat is attached to the recessed area; the swinging seat is provided with a grinding wheel and a second driver which is used for driving the grinding wheel; and the grinding wheel is located between the fixing piece and the supporting piece and is used for grinding the textile belt. The novel wear resistance testing device is simple in structure and convenient to use. With the novel wear resistance testing device of the invention adopted, the loss condition of the textile belt in an actual use process can be more really simulated; and a wear resistance testing result is more accurate and reliable for the quality detection of the textile belt.

The invention discloses a centrifugal detection device for a contact switch, and the device comprises a seat frame which is internally provided with a control device. A console is arranged on one sideof the upper part of the seat frame, and a turntable for detection is arranged on the other side of the upper part of the seat frame; a machine base is arranged in the base frame, a rotary driving device in transmission connection with the turntable for detection is installed on the machine base, and the rotary driving device is in transmission connection with the turntable. A positioning mechanism corresponding to the rotary driving device is arranged on the machine base, and a power connection sliding ring is arranged on the positioning mechanism; the rotary disc comprises a lower clampingplate and an upper clamping plate which are fixedly connected to the rotary driving device. A plurality of mounting holes are formed in the upper end face of the upper clamping plate, and indicator lamps are arranged in the mounting holes. According to the invention, the centrifugal principle is adopted, the detection is obvious and visual, the interference of external signals is avoided, the testresult is accurate and reliable, the accuracy of the touch-explosion switch test is improved, and the test cost is reduced.

The invention belongs to testing technology and relates to a high and low temperature performance testing device of a circuit breaker. It is characterized in that it consists of a contact piece assembly [1], a bottom plate [2], a linear guide rail [3], a compression spring [4], a floating bracket [5], and a follower slide [6]. The invention is used for rapid testing of the high and low temperature performance of circuit breakers. Ten circuit breakers can be tested at the same time by one clamping. The reed made of beryllium bronze alloy and the floating installation structure are used to ensure the test requirements of the circuit breaker contact resistance, and the structure is simple. , easy to operate, high test efficiency.

The invention discloses a screening method of a calcium-activated chloride channel modifier. The screening method comprises the following steps of: (a), preparing an incubation liquid, a washing liquid and a channel opening liquid; (b), dissolving a to-be-screened compound in the incubation liquid to prepare a positive incubation liquid and incubating cells; (c), adding the cleaning liquid, cleaning for three times to four times after the incubation, and adding the channel opening liquid for carrying out stewing reaction to obtain a reaction liquid; (d), adding a silver nitrate solution in the reaction liquid, uniformly mixing and keeping in the dark for stewing for 24 hours, taking liquid supernatant to ICR8000 to measure the concentration of silver ions. According to the screening method of the calcium-activated chloride channel modifier disclosed by the invention, a to-be-detected compound is added in the incubation stage to judge the opening-closing condition of the ion channel by changing the number of chloride ions entering the cells, so that not only can the chloride ion concentration in the cells be improved, but also the flexibility can be increased and a to-be-detected drug can be prevented from directly contacting with the silver irons to generate reaction. The screening method of the calcium-activated chloride channel modifier is high in flexibility, accurate and reliable in detected result and simple and easy to operate, and therefore, the screening method is a simple and efficient CaCCs channel modifier screening method with better advantages.

The invention provides a butterfly valve sealing performance testing system under a high-temperature condition. The butterfly valve sealing performance testing system comprises a heating unit, a flow control unit and a testing unit, wherein the heating unit heats the test medium to a set temperature; the flow control unit is connected between the heating unit and the testing unit and used for adjusting the flow of the test medium; the testing unit comprises a first testing pipe, a second testing pipe and a flow meter, the butterfly valve to be tested is installed between the first testing pipe and the second testing pipe, the first testing pipe is connected with the flow control unit through the first butterfly valve, a one-way valve is installed in the first testing pipe, the second testing pipe is connected with the air outlet pipe, and the second testing pipe is connected with the air outlet pipe through the second butterfly valve. And the flow meter is arranged on the second testing pipe. The flow meter is used for accurately testing the leakage amount of the test medium, so that the test result is accurate and reliable; meanwhile, the flow control unit can adjust the flow of the test medium, so that the test system can test the leakage rates of the butterfly valve corresponding to different flows and flow rates.

The invention discloses a near-field induction setting module performance automatic test device and method, and the device comprises a first electric sliding table and an induction antenna detachably connected to the first electric sliding table, and the first electric sliding table is used for adjusting the relative position of the induction antenna; the electric rotary table is used for adjusting the angle of the induction setting module; the second electric sliding table is used for adjusting the relative position of the induction setting module; the induction antenna and the test module are used for a communication test of the induction setting module; and the control module is connected with the test module and is used for controlling actions of the sliding table and the rotary table. The automatic testing device and method are used for automatic performance testing of the induction setting module, the testing result is accurate and reliable, the testing efficiency and testing precision of induction setting module products can be effectively improved, and the automatic testing device and method can be matched with performance testing of induction setting modules of different shapes, sizes and specifications in cooperation with a replaceable induction antenna.

The invention discloses a test method and a test system for audio activation sound pressure of an intercom terminal. The test system specifically includes an audio signal generator, a simulated mouth, a test intercom terminal system, a sound transmitting mouth and an audio analyzer; the test method passes the analysis The integrity of the test audio output by the remote intercom terminal, so as to determine the corresponding activation sound pressure of the intercom terminal. This test method is simple and convenient to implement, and the test results are accurate and reliable.

The invention provides an automatic testing method and device, electronic equipment and a computer readable storage medium, and the method comprises the steps: in an automatic testing process, when a preset code of a test case script is executed, polling whether the position information of the preset code is matched with preset pause position information or not; if the position information of the predetermined code is matched with the preset pause position information, generating a test pause instruction, so that a test system pauses the automatic test in response to the test pause instruction; and if the position information of the predetermined code is not matched with the preset pause position information, generating a test continuing instruction, so that the test system continues to execute the automatic test in response to the test continuing instruction. According to the technical scheme, problems occurring in the test can be found and positioned in time, the automatic test can be carried out smoothly, more accurate and reliable test results can be obtained conveniently, and the practicability of the automatic test is improved.

The invention discloses a novel automated chair back pressure resistance and fatigue resistance testing device. The device comprises a supporting bracket, a tightening bracket, a tightening mechanism and a control cabinet, wherein the tightening bracket comprises four first vertical columns and a plurality of supporting frames; the tightening mechanism comprises a tightening cylinder, a balancing weight, two tightening supporting rods arranged on one side of the balancing weight, and an upper tightening wheel and a lower tightening wheel arranged between the two tightening supporting rods; a tightening chain is connected with the balancing weight; the tightening chain winds the upper tightening wheel and the lower tightening wheel respectively to be connected with a chair back; the supporting bracket comprises a plurality of second vertical columns, and a top frame and a bottom frame which are arranged among the second vertical columns; a supporting platform for supporting a chair is arranged in the top frame; a PLC is arranged in the control cabinet; an operation panel is arranged at the top of the control cabinet; the PLC is electrically connected with the tightening cylinder through an electromagnetic valve. The device is high in stability in the testing process, is accurate and reliable in testing results, and meanwhile can be applied to the testing of chairs with various models.

The invention discloses a detachable pattern liquid detection device. The detachable pattern liquid detection device comprises a sampling container, an inner liner body and a test strip, wherein the sampling container comprises an upper container and a lower container, the upper container and the lower container are in threaded connection and are communicated with each other, and one end, away from the lower container, of the upper container is opened to form a sampling opening; the inner lining body is positioned in the lower container and annularly arranged along the inner wall of the innerlining body, and a drainage groove which vertically extends along the height direction of the lower container is formed in the inner lining body; and the test strip is inserted into the drainage groove, and the test end of the test strip extends to the outside of the drainage groove. The testing result is high in accuracy, the product processing difficulty is reduced, and the components can be recycled.

The invention relates to an online monitoring and measuring method, in particular to an online monitoring and measuring method for unorganized HF emission of a skylight of an electrolytic plant. The HF concentration at the throat of the skylight ventilator is tested through HF online monitoring equipment, the wind speed of the throat of the skylight ventilator is measured through an anemometer, the flue gas temperature of the throat of the skylight ventilator is measured through a thermometer, the concentration C of HF discharged by the skylight under standard conditions is equal to CTP /PT , and the HF discharge amount Q of the skylight in unit time is equal to C*V1*S <throat>, wherein C is the online monitoring HF concentration, V is the throat wind speed measured by the anemometer, S throat is the throat area of the skylight ventilator of the electrolytic plant, T standard is the temperature under the standard condition, P standard is the pressure under the standard condition, P is the pressure under the working condition, and T is the flue gas temperature. The method has the advantages that the concentration of the HF discharged by the skylight is measured, the influence of the wind speed and the temperature on the skylight flue gas is considered, the discharge amount of the HF can be calculated, and the test result is accurate and reliable.

The invention relates to the field of fibers, in particular to a fiber directionality testing device. The fiber directionality testing device comprises a compression device and an electrode system, wherein the compression device is used for compressing dispersive fibers; the electrode system comprises a first electrode, a second electrode and a resistance tester; the first electrode is arranged in the compression device in the horizontal direction, and can generate displacement in the fiber compression direction; the second electrode is arranged in the compression device in the direction vertical to the first electrode; the resistance tester is electrically connected with the first electrode and the second electrode, and is used for testing the resistance value of the compressed dispersive fiber in the horizontal/vertical direction. The fiber directionality tested by the method can accurately and comprehensively reflect the arrangement condition of fibers in the compression direction and vertical compression direction.