35results about How to "Suitable for field testing" patented technology

The invention belongs to the technical field of microwave and millimeter wave testing, relates to the reflectivity testing of wave absorptive materials of microwave and millimeter wave, and provides a testing device that measures the reflectivity of the wave absorptive materials according to an arc method. Compared with existing reflectivity testing devices of the wave absorptive materials with arc methods, the invention provides an arc rail that consists of a first ally arm (7) shaped like a character '7' and a second ally arm (8) and can rotate around a rotating shaft of an electric rotating motor (12). When utilized in the reflectivity measurement of different incident angles, the testing device has ultra-convenient angle control and fixed radiuses of the ally arms, and can reduce the testing error that is caused by radius change. After adopting the structure that is shaped like the character '7', the testing device has reduced volume, and consequently can effectively reduce the disperse emission that is caused by an antenna fixing frame, raises measuring precision, and is convenient for loading, unloading, transportation and storage.

The present invention relates to a method for detecting phenol compounds in a water body environment through an enzyme electrochemical biosensor. The biological sensor detection apparatus comprises a working electrode, an auxiliary electrode, a reference electrode, a detection cell and an electrochemical workstation. The specific operation steps comprise: adding a hydrophilic ionic liquid (such as 1-butyl-3-methylimidazolalanine and BMIM [Ala]) to a mesoporous carbon solution, and shaking for half an hour to obtain a novel mesoporous carbon and hydrophilic ionic liquid composite material; adding tyrosinase to the mesoporous carbon and hydrophilic ionic liquid composite material solution, shaking for one hour, and adding the obtained solution to the surface of a working electrode in a dropwise manner to obtain a tyrosinase immobilized working electrode; and inserting the tyrosinase immobilized working electrode, the auxiliary electrode and the reference electrode into a detection cell filled with a phosphate buffer solution, and adding a single standard substance of a phenol compound under a stirring condition to produce a corresponding current response signal.

The invention discloses a kit and a detection method for determining the copper ion concentration in a water environment. The kit comprises a B1 solution, a color comparison tube, a glass graduated pipette, a copper standard color scale solution, and a copper standard color scale or copper standard color comparison card. The kit is advantage in simple preparation method, low cost, good B1 solution stability, high extraction rate, low detection time, no requirement on other experimental equipment and professional and technical personnel, easy implementation, convenient carrying, and suitability for on-site detection of visual colorimetry. Main reagents in the kit are provided in forms of working fluids, and are packaged independently. The reagents are easy to preserve, and are suitable for on-site applications. According to the detection method, a reaction is fast. Under room temperature, only 7-10 minutes are needed from sample treatment to detection result acquiring. All organic phases of the method are not soluble in water, such that waste liquids can be separated and recovered after detection, and can be processed and reused. Therefore, no secondary pollution is caused, and requirements of modern detection technologies are satisfied.

The invention discloses a method for detecting the acute toxicity of water environment by using ATP bioluminescence. The method comprises the following steps: an ATP reaction reagent, luciferase, an ATP standard sample, and a water body to be detected are sequentially added in a reaction test tube, placing the reaction test tube in an ATP fluoroscope testing instrument to detect fluorescence intensity, the detection response time is 30s and the detection is served as an experimental group; the standard sample is replaced by distilled water, the detection is served as a control group; the experimental group and the control group are repeatedly detected for three times; and the toxicity of the water body is judged by calculating relative luminance K. The method of the invention has the characteristic of stable and sensitive test effect; and the effect of a luminescent bacteria test can be reached within 3 min of the testing time at most; and the response on organic toxic substances is more sensitive than the luminescent bacteria. In the invention, a portable ATP handholding instrument with a direct current power supply is adopted, thus the ATP handholding instrument is convenient to be carried and is suitable for site test.

The invention discloses a high-order SH guided wave imaging detection method and system for rail bottom cracks of a steel rail. The method comprises the following steps of introducing sinusoidal pulsestring current into an electromagnetic ultrasonic SH guided wave excitation probe to excite an SH guided wave at the rail bottom of the steel rail, enabling the electromagnetic ultrasonic SH guided wave receiving probe to receive the reflection echo to obtain a detection echo signal, keeping the distance between the electromagnetic ultrasonic SH guided wave excitation probe and the receiving probe unchanged, moving along the to-be-detected length direction of the rail bottom of the steel rail at a preset step length, and acquiring a plurality of groups of detection echo signals, performing synchronous extrusion wavelet transform processing on each group of detection echo signals, and extracting high-order SH guided wave time domain signals to obtain multiple groups of high-order SH guidedwave time domain signals, performing B scanning imaging on the obtained multiple groups of high-order SH guided wave time domain signals, and obtaining a steel rail bottom defect imaging graph. High-order SH guided waves have the advantages of high resolution, high defect detection sensitivity and the like, and small cracks can also be visually recognized; the position and the size of the crack can be visually recognized, and the method is suitable for in-service nondestructive testing.

The invention discloses a spot low-voltage power line carrier channel noise testing system and a method thereof. Noise testing of a time domain and a frequency domain is carried out through a specially-designed coupler and a high-speed and multichannel data acquisition card, time domain waveform display of noise signals is achieved through testing software in a laptop, fast Fourier transform algorithm (FFT) is carried out on time domain data through the software, and noise frequency domain waveform (power spectral density) is obtained. When the waveform is observed, computer date storage resources can be used at the same time to carry out long-time data storage and monitoring so that recording, analyzing and assessing on low-voltage power line noise characteristics can be achieved. Meanwhile, the spot low-voltage power line carrier channel noise testing system and the method thereof have the advantages of being flexible, convenient and fast, and suitable for various low-voltage power line environments.

The invention relates to a method for detecting a transcription factor by a biosensor and a glucometer. The method comprises the following steps of 1, fixing a nucleic acid sequence specifically binding to a transcription factor on a solid matrix, and adding a sample into the solid matrix with the nucleic acid sequence to obtain a compound, 2, fixing a transcription factor antibody and invertase on carriers, 3, mixing the solid matrix obtained by the step 1 and the carriers obtained by the step 2, and removing the unbound carriers, and 4, adding excess cane sugar into the mixture obtained by the step 3, carrying out a reaction for a certain time, detecting glucose content by a conventional glucometer, and converting the glucose content into content of the transcription factor in the sample. The method has high sensitivity and singularity, simple processes, a low cost and a fast detection rate, adopts the portable detection apparatuses, and is suitable for popular popularization.

The invention provides a novel color-developing agent luminosity analytical method for measuring hydrogen cyanide content in mainstream smoke quickly, which comprises the following steps of: pretreating a sample in which hydrogen cyanide in the mainstream smoke is collected, adding a color-developing agent, and quantifying by a luminosity analytical method, wherein the color-developing agent is 4-nitrobenzaldehyde and o-dinitrobenzene; preparing potassium cyanide (KCN) solution which is added with the color-developing agent and has different concentrations to make a standard curve; and quantifying the standard curve by an external standard method, adding the color-developing agent in a cigarette absorption liquid sample, and performing photometry detection at wavelength 533 nm by an ultraviolet spectrophotometer. In the method adopting the color-developing agent containing 4-nitrobenzaldehyde-o-dinitrobenzene, the selectivity and sensitivity are high, a reaction is completed instantaneously and the interference resistant capacity is high. In addition, the method is simple in operation, cigarette sidestream smoke can be detected, the HCN in smoke environment also can be analyzed qualitatively and semiquantitatively, and the method is also suitable for field detection.

The invention relates to the technical field of testing of an oxygen index needed in combustion of a material, especially to a portable oxygen index testing device and an application method. The portable oxygen index testing device comprises a case which is connected with an oxygen-nitrogen mixed gas cylinder through a gas flexible pipe; and according to the application method, oxygen-nitrogen mixed gas in the oxygen-nitrogen mixed gas cylinder is delivered to an incendiary cylinder of the case through the gas flexible pipe, then the sample is ignited, the value of a gas flowmeter is recorded, then the value of the gas flowmeter is recorded again when the sample is burned to a marked line, and thus, the value of the oxygen index of the sample can be calculated. The invention has the following beneficial effects: the portable oxygen index testing device has the advantages of convenience in manufacturing, carrying and transporting, convenient operation, low cost and applicability to on-site testing of the oxygen index of a fireproof thermal-insulation material and changes the situation that detection of the oxygen index of a material can only be completed in a laboratory in the prior art.

The invention provides an acute toxicity algae infrared testing method of toxic and harmful substances, which adopts the sensitive algae liquid with the chlorophyll content not less than 4.0mg.L-1 and the toxicity test factors of a portable infrared thermometer. The contrast toxicity test is carried out by selecting the processing and concentration design of a test sample, the response dose and the minimum response concentration of the sensitive algae to the sample are determined by the sample dilution concentration and the adding amount of a first-appeared temperature response during the dilution concentration test of using different samples for response temperature difference and response time so as to determine the toxicity of the sample. The sensitivity of the method of the invention can achieve the sensitivity of a luminous bacteria method, the average testing time of the method and the average testing time of the luminous bacteria method are similar, the testing effect ofthe acute toxicity algae infrared testing method of the toxic and harmful substances is the same with the testing effect of the luminous bacteria method. The invention is characterized by convenient test, low cost, strong specificity, field test and so on.

The present invention relates to a method for detecting phenol compounds in a water body environment through an enzyme electrochemical biosensor. The biological sensor detection apparatus comprises a working electrode, an auxiliary electrode, a reference electrode, a detection cell and an electrochemical workstation. The specific operation steps comprise: adding a hydrophilic ionic liquid (such as 1-butyl-3-methylimidazolalanine and BMIM [Ala]) to a mesoporous carbon solution, and shaking for half an hour to obtain a novel mesoporous carbon and hydrophilic ionic liquid composite material; adding tyrosinase to the mesoporous carbon and hydrophilic ionic liquid composite material solution, shaking for one hour, and adding the obtained solution to the surface of a working electrode in a dropwise manner to obtain a tyrosinase immobilized working electrode; and inserting the tyrosinase immobilized working electrode, the auxiliary electrode and the reference electrode into a detection cell filled with a phosphate buffer solution, and adding a single standard substance of a phenol compound under a stirring condition to produce a corresponding current response signal.

The invention relates to the technical field of transformer substation protection devices, and specifically relates to a method for realizing device test protection through recording and playback. The method comprises the following steps: (1) the typical failure waveform question bank establishment process: 1) protection is classified according to logical functions specified by IEC61850; 2) and a corresponding typical failure waveform is recorded for each type of protection through an IED detect detector, and a test question bank is generated for an anticipated action of the corresponding failure waveform is inputted manually; (2) and the test process: 1) an appropriate test question bank is selected according to the logical function classification of the tested protection; 2) the protection is connected to the IED detect detector, and a synchronous clock is connected; 3) the test question bank is played back by the IED detect detector, and the action output of the tested protection is received by the IED detect detector; 4) and the action of the tested protection is compared with the anticipated action in the test question bank to judge the test result. The method of the invention has advantages of low cost and convenience, the protection device has advantages of small size and easy carry, so the protection device is suitable for the field tests of various transformer substations, so that advantages of easy utilization and easy operation can be realized.

The invention discloses a developing agent for a copper ion colorimetric method, a copper ion colorimetric method sensor, and a using method and application thereof, belongs to the technical field ofheavy metal detecting, and aims to provide the copper ion colorimetric method and the copper ion colorimetric method sensor which are low in cost and easy to operate and do not require detecting equipment, and the using method and the application of the copper ion colorimetric method. The developing agent used for the copper ion colorimetric method disclosed by the invention comprises quantum dotsolution, wherein the quantum dot solution is aqueous solution of quantum dots. The copper ion colorimetric method sensor comprises a shell, a reaction container and a light source; the light source and the reaction container are arranged in the container; the reaction container are positioned at the bottom in the shell; the light source is positioned above the reaction container; a plurality of reaction grooves are formed in the reaction container; the light source contains ultraviolet light with the wavelength of less than 350 nm. The copper ion colorimetric method sensor provided by the invention is low in cost and easy to operate; qualitative detection can be performed without the detecting equipment; the sensitivity is ultrahigh.

The invention provides a testing system and method for the broadband power line carrier channel access resistance. The testing system comprises a PC, a signal generator, amplifiers, directional couplers, a power line coupler, a signal conditioning circuit and a data acquisition card. The PC, the signal generator, the amplifiers, the directional couplers, the signal conditioning circuit and the data acquisition card are sequentially connected, the data acquisition card is connected with the PC, and a broadband power line is connected with the directional couplers through the power line coupler. According to the testing system and method, a frequency sweeping method is adopted, the resolution of the access resistance to the frequency is improved, and the accuracy of measured data is higher; meanwhile, the testing system is easy and convenient to use, and site testing can be easily carried out. The modulus of the broadband power line carrier channel access resistance can be obtained through testing, and the phase information of the resistance can also be obtained; meanwhile, the measuring result is accurate, and the testing system and method can be conveniently applied to site measurement and are of great significance in further development research of power line communication.

The invention relates to a device for measuring a retroreflection coefficient. The device comprises an optical system, a photodiode receiver and a retroreflection light spot processing circuit which are all arranged in a shell; the optical system comprises a warm white light diode, a light source small hole diaphragm, a soft light lens, a spectroscope and an achromatic objective lens, wherein the achromatic objective lens and the photodiode receiver are located on the left side and the right side of the spectroscope, and light emitted by the warm white light diode sequentially passes through the light source small hole diaphragm, the soft light lens, the spectroscope and the achromatic objective lens and then is emitted to a retroreflection light membrane layer in parallel; the retroreflection light spot processing circuit comprises a pre-amplification circuit, an A / D conversion circuit and a microprocessor. The device has the advantages of being small in size, high in precision, convenient to operate, suitable for site tests and the like.

The invention discloses an intelligent switch large-power current source system for an electronic transformer. The system comprises a three-phase rectifier circuit, an IGBT array inverter circuit anda current closed-loop control circuit. The three-phase rectifier circuit and the current closed-loop control circuit are connected with the IGBT array inverter circuit; the three-phase rectifier circuit carries out rectification, energy storage and voltage reduction processing on externally-input three-phase alternating current, and provides a DC bus voltage for the system; the stored electric energy is subjected to SPWM modulation through the IGBT array inverter circuit to output a constant current; and the current closed-loop control circuit adjusts output voltage according to load change information and realizes a current closed-loop control strategy. The system realizes the technical effects of steady and transient characteristic test of the electronic transformer.

The invention relates to a kit for rapidly diagnosing peach bacterial shot hole, and belongs to the technical field of plant protection. The kit comprises an RPA primer pair, a specific crRNA and a single-stranded DNA probe; the sequence of the RPA primer pair is as shown in SEQ ID NO.1-2, the sequence of the specific crRNA is as shown in SEQ ID NO.3, and the sequence of the single-stranded DNA probe is as shown in SEQ ID NO.4 and / or SEQ ID NO.5. The kit is used for detecting the main pathogenic bacteria Xap of the peach bacterial shot-hole disease on the basis of an RPA technology and a Crispr / Cas system, visual detection is realized through a transverse flow detection test strip and a miniature ultraviolet flashlight, the kit is simple and flexible, low in cost, high in sensitivity and high in specificity, a user can freely select the kit, the problem that the kit cannot be used in some scenes is effectively solved, and the method has a good application prospect in the field of peach disease diagnosis and monitoring.

The invention belongs to the technical field of microwave and millimeter wave testing, relates to the reflectivity testing of wave absorptive materials of microwave and millimeter wave, and provides a testing device that measures the reflectivity of the wave absorptive materials according to an arc method. Compared with the existing reflectivity testing devices of the wave absorptive materials with arc methods, the invention provides an arc rail that is composed of a first ally arm (7) shaped like a character '7' and a second ally arm (8) and can rotate around a rotating shaft of an electric rotating motor (12). When being utilized in the reflectivity measurement of different incident angles, the testing device has ultra-convenient angle control and fixed radiuses of the ally arms, thus reducing the testing error caused by radius change. After adopting the structure that is shaped like the character '7', the testing device has reduced volume, and consequently can effectively reduce the disperse emission caused by an antenna fixing frame, raises measuring precision, and is convenient for loading, unloading, transportation and storage.

The invention relates to a projection moire fringe method-based out-of plane displacement measurement system and method. Light emitted by a light source is projected onto the surface of a measured object through a projection grating and a projection lens, so that grid lines can be formed on the surface of the measured object; the grid lines are subjected to out-of plane displacement modulation of the surface, and as a result, the grid lines are distorted; the distorted grid lines are imaged on a reference grating through an imaging lens, so that moire fringes can be formed; the moire fringes are recorded by a CCD camera; and out-of plane displacement can be calculated through analyzing the phase variation of a moire fringe image. According to the measurement system and method of the invention, the measurement area, resolution and measurement range of the system can be flexibly adjusted according to test requirements; and even a large-area object is tested, high resolution and high precision can be still realized. The automation degree of the measurement system of the invention is high, after acquired images are subjected to later-stage processing of a computer, quick batched measurement can be realized; and the whole system has high anti-external environmental interference performance and is suitable for on-site testing.

The invention provides a novel color-developing agent luminosity analytical method for measuring hydrogen cyanide content in mainstream smoke quickly, which comprises the following steps of: pretreating a sample in which hydrogen cyanide in the mainstream smoke is collected, adding a color-developing agent, and quantifying by a luminosity analytical method, wherein the color-developing agent is 4-nitrobenzaldehyde and o-dinitrobenzene; preparing potassium cyanide (KCN) solution which is added with the color-developing agent and has different concentrations to make a standard curve; and quantifying the standard curve by an external standard method, adding the color-developing agent in a cigarette absorption liquid sample, and performing photometry detection at wavelength 533 nm by an ultraviolet spectrophotometer. In the method adopting the color-developing agent containing 4-nitrobenzaldehyde-o-dinitrobenzene, the selectivity and sensitivity are high, a reaction is completed instantaneously and the interference resistant capacity is high. In addition, the method is simple in operation, cigarette sidestream smoke can be detected, the HCN in smoke environment also can be analyzed qualitatively and semiquantitatively, and the method is also suitable for field detection.

The invention relates to the technical field of testing of an oxygen index needed in combustion of a material, especially to a portable oxygen index testing device and an application method. The portable oxygen index testing device comprises a case which is connected with an oxygen-nitrogen mixed gas cylinder through a gas flexible pipe; and according to the application method, oxygen-nitrogen mixed gas in the oxygen-nitrogen mixed gas cylinder is delivered to an incendiary cylinder of the case through the gas flexible pipe, then the sample is ignited, the value of a gas flowmeter is recorded, then the value of the gas flowmeter is recorded again when the sample is burned to a marked line, and thus, the value of the oxygen index of the sample can be calculated. The invention has the following beneficial effects: the portable oxygen index testing device has the advantages of convenience in manufacturing, carrying and transporting, convenient operation, low cost and applicability to on-site testing of the oxygen index of a fireproof thermal-insulation material and changes the situation that detection of the oxygen index of a material can only be completed in a laboratory in the prior art.

The invention relates to a turn-to-turn insulation fault diagnosis characteristic waveform generating device of a switch device opening-closing coil. The turn-to-turn insulation fault diagnosis characteristic waveform generating device comprises a power module, a characteristic pulse generation module, a signal output and load module and a battery. The fault probability of a circuit device is reduced, and the reliability of the system is improved by adopting the device. The turn-to-turn insulation fault diagnosis characteristic waveform generating device makes fault judgement accurate, simple,convenient and visual. The turn-to-turn insulation fault diagnosis characteristic waveform generating device is a nondestructive testing method. A firm and objective data foundation is provided for turn-to-turn insulation fault diagnosis of the switch device opening-closing coil. The turn-to-turn insulation fault diagnosis characteristic waveform generating device has the advantages of being safe, portable, flexible, accurate and the like, the problem produced by characteristic waveform in turn-to-turn insulation fault diagnosis of the current switch device opening-closing coil is solved, thetechnical levels in the related fields are improved, and the shortcomings of detection technologies in actual application are overcome.

The invention relates to an analog loading and integration testing system and method of a hydraulic bending roller device of a strip rolling mill and belongs to the technical field of metallurgy devices. The analog loading and integration testing system of the hydraulic bending roller device of the strip rolling mill comprises an analog loading device and an integration testing control system. A rolling mill bending roller dynamic testing analog loading device comprises a fixing back plate-base for fixing the hydraulic bending roller device (a tested piece), a mechanical loading frame simulating the structure and rigidity of the rolling roller and travel adjusting pads. The integration testing control system comprises a hydraulic power station, a hydraulic control valve stand (comprising abuilt-in pressure sensor), a high-speed closed loop controller PLC, a data collecting device PDA, dedicated test control software (for open-loop control and closed-loop control of start friction force under load or no load, hysteresis, step response, frequency response and the like) and data collection and analysis software.

The invention relates to an array electrode-based biosensor, comprising insulating media, a reference electrode, an auxiliary electrode and a plurality of working electrodes, wherein, a plurality of working electrodes form an array, the surface of the biosensor has a buffer solution film formed by a macromolecule polymeric material layer and the absorbed buffer solution. Compared with the currentbiosensors, the biosensor in the invention has the main advantages that: 1. the detection result is reliable and accurate; array working electrodes are connected in parallel, the capture probability of the electric signals can be improved by the working electrode array, thus improving detecting reliability and reducing the side effects brought about by differences among electrodes and failure of the single electrode; 2. detection environment is self-carried; the detected samples need no pre-treatment, thus realizing rapid and nondestructive detection; 3. the parallel connection of array working electrodes improves the signal-to-noise ratio of the test system and the detection sensitivity, simultaneously, ordinary, microminiature and portable detectors can be used as the response current increases, and are applicable to field detection.

A distribution transformer rated capacity verification method convenient for field test comprises the steps: measuring the DC resistance Rt1 of a high-voltage winding and a low-voltage winding of a distribution transformer, calculating the copper loss Pr of the distribution transformer under different rated currents, and converting the copper loss Pr into the copper loss Prt at a reference temperature; calculating the percentage of the copper loss Prt in the corresponding load loss standard value; and comparing the percentages, and judging that the corresponding rated capacity closest to 90% is the rated capacity SN of the distribution transformer. By adopting the method to verify the rated capacity of the distribution transformer, the distribution transformer with small charge or small charge can be tested, and the rated capacity test result is accurate. And only one direct-current resistance tester is needed for testing, so that the tester is convenient to carry and very suitable forfield testing.

The invention provides a testing system and method for the broadband power line carrier channel access resistance. The testing system comprises a PC, a signal generator, amplifiers, directional couplers, a power line coupler, a signal conditioning circuit and a data acquisition card. The PC, the signal generator, the amplifiers, the directional couplers, the signal conditioning circuit and the data acquisition card are sequentially connected, the data acquisition card is connected with the PC, and a broadband power line is connected with the directional couplers through the power line coupler. According to the testing system and method, a frequency sweeping method is adopted, the resolution of the access resistance to the frequency is improved, and the accuracy of measured data is higher; meanwhile, the testing system is easy and convenient to use, and site testing can be easily carried out. The modulus of the broadband power line carrier channel access resistance can be obtained through testing, and the phase information of the resistance can also be obtained; meanwhile, the measuring result is accurate, and the testing system and method can be conveniently applied to site measurement and are of great significance in further development research of power line communication.

The invention relates to an optical system for measuring retroreflection coefficient, which comprises an illumination light source, a beam splitter, a mirror, an achromatic objective lens, a filter mirror and a photodiode receiver. The beam splitter is arranged below the illumination source. The reflective mirror, the achromatic objective lens, the filter mirror and the photodiode receiver are respectively arranged on the left and right sides of the illumination light source and the beam splitter. The illumination light source includes a warm white LED lamp, a light source aperture diaphragm, a soft mirror and a scattered light processing device sequentially arranged under the warm white LED lamp. The beam splitter is a transflective beam splitter, and it is obliquely arranged below the scattered light processing device. The reflector is a compound reflector, including a large reflector and a small reflector arranged in pairs. To sum up, the present invention has the characteristics of small size, high precision, convenient operation, variable incidence angle and observation angle, and the like.

The invention discloses a constant-temperature detection method for identifying lactobacillus brevis as well as a special primer and a kit thereof. The specific primer group provided by the inventionis composed of a primer F3, a primer B3, a primer FIP, a primer BIP, a primer LF and a primer LB, and the six primers are sequentially shown as sequences 2-7 in a sequence table. The application of the specific primer group is as follows (b1) or (b2): (b1) identifying or assisting in identifying lactobacillus brevis; (b2) detecting whether the to-be-detected sample contains lactobacillus brevis ornot. The specific gene segment of lactobacillus brevis is amplified by using a loop-mediated isothermal amplification technology, the blank of the LAMP detection method of lactobacillus brevis in beer is filled, and the detection method has the advantages of strong specificity, simplicity in operation, rapidness, convenience and the like, can be used for beer quality monitoring, and is suitable for basic application and on-site rapid detection of winery.