38results about How to "Raise the level of measurement" patented technology

A container for containing an amount material or another container. The container includes a support for engaging an arm of a user. The container also includes a handle. The apparatus also can employ an adjustable handle, adjustable from a first position to a second position. The container is particularly suited for drywall administrators and builders.

An optical fiber sensor which functions as a tactile sensor includes a plurality of shearing stress sensor sections including respective optical fibers and a plurality of gratings for reflecting light beams having predetermined wavelengths. The gratings are disposed in the optical fibers and arrayed along a plane parallel to the direction in which a shearing stress is applied from an object to the shearing stress sensor sections. The sensor also includes a perpendicular stress sensor section including an optical fiber and a plurality of gratings for reflecting a light beam having a predetermined wavelength. The gratings are disposed in the optical fiber and arrayed along a plane parallel to the direction in which a perpendicular stress is applied from the object to the perpendicular stress sensor section. Preferably, stress direction converting means such as elastic members for converting the direction of an applied stress are mounted on the optical fibers.

The invention relates to a device for measuring time-domain waveforms of ultrafast pulses. The device comprises a microwave signal source, a femtosecond pulse laser, a light guide probe, a coaxial-to-coplanar converter, a coplanar waveguide and a lock-in amplifier, wherein the microwave signal source provides a microwave signal source for an ultrafast pulse generator and the femtosecond pulse laser, so that the ultrafast pulse generator generates the ultrafast pulses; the coaxial-to-coplanar converter transmits the received ultrafast pulses to the coplanar waveguide to generate ultrafast pulse electric fields; and time-delay lasers stimulate the light guide probe to generate photosensitive currents under the effect of the ultrafast pulse electric fields, and sampling is conducted through the lock-in amplifier. The device has the advantages that the ultrafast pulses with the pulse width of sub-10ps can be measured, the ultrafast pulses transmitted coaxially can be measured, and the ultrafast pulses transmitted in a planar manner can also be measured, so that a new breakthrough in measurement of the time-domain waveforms of the ultrafast pulses is realized, and the level of measurement of instruments, equipment and devices, which can generate the ultrafast pulses, is raised.

A precipitation gauge including a clear elongated outer cylinder and an opaque or translucent inner member disposed longitudinally in the outer cylinder to define a tubular water receiver in the space between the cylinder and the inner member and markings disposed along either the outer cylinder or the inner member, the gauge indicating the amount of water collected in the water receiver with a sharp demarcation at the top surface of the water resulting from an optical illusion making it appear that the portion of the gauge below the demarcation is filled with a fluid of the color of the inner member.

The invention relates to a device used for measuring impulse response of a photoelectric detector. The device comprises a multi-channel femtosecond pulse laser generator, a coplanar waveguide, an electric displacement platform, a waveguide probe, a coaxial-to-coplanar converter and a lock-in amplifier, wherein the multi-channel femtosecond pulse laser generator provides light sources for the electric displacement platform and the ultrafast photoelectric detector, the ultrafast electric pulse detector generates ultrafast electric pulses, the coaxial-to-coplanar converter transmits the received ultrafast electric pulses to the coplanar waveguide, and an ultrafast pulse electric field is generated on the coplanar waveguide; the waveguide probe is stimulated by laser of the electric displacement platform to generate a photosensitive current in the ultrafast pulse electric field, and the photosensitive current is sampled through the lock-in amplifier. The device has the advantages that on the basis of the time domain waveform of the ultrafast electric pulses in the photoelectric technology, the equivalent bandwidth of sampling of the waveguide can reach 300GHz, the impulse response of the photoelectric detector can be measured more accurately, and level of measurement on the impulse response of the photoelectric detector is improved.

The invention discloses a high-precision integrated explosion protection and detection device, which is an integrated device for detecting and determining existence of an explosive by use of a instantgamma-ray neutron activation analysis technology and with an explosion protection function. The device consists of an explosion protection system, a neutron source item system, a sample detection system, an energy spectrum analysis system, a shielding protection system and a mechanical power system, wherein a neutron source is used for activating a characteristic gamma ray of a detected object, adetector is used for gamma ray collection and energy spectrum measurement, the explosion protection system has a relatively good energy absorption cushioning function, the shielding protection systemis used for implementing dose protection over the environment and a human body and reducing harms of neutrons to the environment and the human body, and the mechanical power system has a convenient measurement function. According to the device, a signal to noise ratio is used as a design and evaluation criterion of the device and the whole device is optimized and designed on the basis of a noveldevice evaluation and optimization method, so that the device is endowed with a relatively high signal to noise ratio and the measurement level of the device is improved; in addition, an explosion protection function and a detection function are organically combined, so that the device is high in safety and convenient to operate.

The invention relates to a forward-turning transducer bracket of a marine survey boat. The forward-turning transducer bracket comprises a pull-down oil cylinder, a pull-up oil cylinder, a forward-turning bracket device and a transducer, wherein a vertical groove is arranged on the middle axis of the head of the survey boat; bearing seats are symmetrically and fixedly arranged on the two sides of the upper end in the vertical groove; a vertical downward bracket is fixedly arranged on a hinge shaft between the two bearing seats; the pull-down oil cylinder is articulated in the vertical groove; the pull-up oil cylinder is articulated on the head plane of the survey boat; a swing arm is coaxially arranged on the bracket above the hinge shaft; the upper end of the swing arm is articulated with a pull-down rod and a pull-up rod respectively; the pull-down rod is coaxially fixed with an extension end of the pull-down oil cylinder; and the pull-up rod is coaxially fixed with an extension end of the pull-up oil cylinder. Since the bracket is turned over by two hydraulic oil cylinders, the bracket not only improves the storm resistance and stability, but also correspondingly improves the reliability of the data acquisition of the survey equipment, increases the science of the data and upgrades the survey level of the survey boat.

The invention provides a calibration cable for geological exploration as well as a production technology and a calibration detection method of the calibration cable. The calibration cable for geological exploration comprises a cabled core formed by mixing a plurality of conductors and tensile components, a sheathing layer is extruded on the outer side of the cabled core, calibration rings with equal intervals L are arranged on the sheathing layer, the outer diameter of the sheathing layer is set as D, the inner diameter of each calibration ring is set as d, the surface of each calibration ring is set as red or other marking colors, and the calibration ring is made of rubber. When a product is produced according to an operation process of the production technology, the technical scheme that a section of the calibration cable is selected randomly from a finished cable for detection is adopted. The defects that the conventional exploration cable does not have calibration intervals, is not suitable for exploration of deeper geological condition, cannot finish a geological exploration task precisely, especially when the deeper geological condition is explored, design calculation on the cable length is required, the service life of the cable is influenced, and the exploration cost is increased are overcome, and the calibration cable is particularly suitable for an instrument and equipment for exploration of geological conditions with frequent natural disasters such as earthquake, debris flow, landslide and the like.

The invention discloses a sun and moon tracking device and method suitable for a motion state. The sun and moon tracking device comprises a two-dimensional rotary table, a tracking auxiliary device, a controller, an installation panel and a computer. The two-dimensional rotary table, the tracking auxiliary device and the controller are mounted on the installation panel; the two-dimensional rotary table is used for loading the detector and making the detector point to the sun or moon, the tracking auxiliary device is used for determining the azimuth angle and inclination angle of the initial mounting horizontal plane of the carrier, the controller is used for collecting image data of the tracking auxiliary device and transmitting the image data to the computer, and the computer is used for analyzing the image data and determining the inclination angle and azimuth angle of the horizontal plane; and then the two-dimensional rotary table is controlled to move through the controller so that the azimuth and pitching movement of the two-dimensional rotary table reaches a specified position, and the controller contains a GPS. The device has the advantages that the device can realize underway observation of the carrier, does not need to be installed at an accurate initial position, is simple and convenient, is easy to operate, and improves the atmospheric measurement level.

The invention discloses a system and method for measuring the radiation waveform of a terahertz pulse radiator, which relate to the technical field of radiation wave measurement, and aim to solve theproblem that a conventional radiation waveform measurement method cannot meet the measurement requirements of the radiation waveform of the terahertz pulse radiator. The device comprises a laser repetition frequency locking module for locking the output repetition frequency of a master fiber femtosecond laser and a slave fiber femtosecond laser according to a time base reference signal, and sending the repetition frequency difference as a trigger signal to acquisition equipment, a synchronization module which synchronizes the output signal to the repetition frequency of the slave fiber femtosecond laser and provides a trigger signal for the tested terahertz pulse radiator, so that the repetition frequency of the radiation pulse of the tested terahertz pulse radiator is the same as the repetition frequency of the trigger signal, a terahertz detector which generates photon-generated carriers under the excitation of the master fiber femtosecond laser and generates current under the actionof the terahertz pulse of the measured radiation, and acquisition equipment which is used for acquiring the current signal output by the terahertz detector.

The invention relates to a built-in neutron elemental analysis device which comprises a neutron source item system, a sample detection system, a shielding protection system and an energy spectrum analysis system. The built-in neutron elemental analysis device has the advantages that detected industrial material elements can be stimulated by neutrons emitted from neutron sources, generated gamma rays can be collected and analyzed by the aid of a detector, industrial material component information can be obtained, production can be guided, and the shielding protection system is used for carryingout dose protection on environments and human bodies and protecting the detector; the built-in neutron elemental analysis device is designed by the aid of optimal design methods on the basis of signal interference ratio systems, signal interference ratios are used as design evaluation criteria for the built-in neutron elemental analysis device, accordingly, the integral signal interference ratioof the built-in neutron elemental analysis device which is a system device can be increased, the detection level of the built-in neutron elemental analysis device can be ultimately upgraded, industrial material production and utilization can be optimally guided, the built-in neutron elemental analysis device is integrally miniaturized, is low in cost and can be conveniently and quickly mounted, and only small mounting spaces are required by the built-in neutron elemental analysis device.

The invention provides an impurity detection method of clarithromycin. The method specifically comprises the following steps: preparing a crude drug test solution; preparing an evaluation solution; preparing a self-control solution; preparing a system sensitivity evaluation solution; preparing a system suitability solution; preparing a blank solvent; successively introducing samples and requiring that ratio of impurity D's peak height / principal component peak to impurity D's adjacent peak valley in the atlas is not less than 3.0; and finding out impurity position and peak area in the test object atlas referring to the system suitability atlas, and calculating contents of various impurities by a self-contrasted method so as to finish the detection. By the method, load of system and chromatographic column is reduced, impurity determination level is improved, and an ideal determination effect is achieved through system adjustment.

The telemetering remote-reading surface type nucleon moisture densitometer includes gamma-source positioning rod on which a handle is mounted and source rod which are fixed on the machine shell. The gamma-ray source is placed in the base end portion of source rod, the neutron ray source is fixed in bottom portion of machine shell, the gamme-ray detector and neutron ray detector are placed in the bottom portion of machine shell, and the panel on which the display screen and operation keyboard are mounted is placed on the panel of the machine shell, and the telemetering on-palm controller whoseinterior is equipped with wired control circuit of wireless control circuit is connected with keyboard of moisture densitometer by means of interface, and the computer and printer are connected with moisture densitometer keyboard by means of interface.

The invention provides a dairy herd improvement (DHI) determination standard substance, and a preparation method and applications thereof. The standard substance is obtained through orthogonal designaccording to components with the following mass percentage ranges and corresponding horizontal gradients: the mass percentage range of fat is 0.20-6.00%, and 12 horizontal gradients are designed; themass percentage range of protein is 2.00-4.50%, and 6 horizontal gradients are designed; and the mass percentage range of lactose is 4.00-5.00%, and 4 horizontal gradients are designed. The standard substance is uniform, stable, wide in component concentration range and low in leverage value, so that requirements of DHI measurement can be achieved, and the influences of the correlation between fatand protein content in natural milk samples on the calibration accuracy of the DHI standard substance can be reduced; and after a DHI standard substance calibration instrument is used, the accuracy of the instrument can be enhanced, measurement levels can be improved and maintain stable, and inter-laboratory consistency can be increased.

The invention discloses a calibration cable for geological exploration. A plurality of conductors and a tensile element are mixed to from a cable core. The cable core is wrapped by a sheath layer in an extruding manner, and the sheath layer is provided with calibration rings at equal intervals of L. The external diameter of the sheath layer is set as D, and the internal diameter of each calibration ring is set as d. The surface of the calibration ring is provided with a red mark or a mark with another color, and is made of rubber. The cable is manufactured according to a technological operation flow, and one calibration cable segment is selected from the finished cable for detection. The cable irons out the defects that there is no calibration interval in conventional cable detection, the conventional cable detection is not suitable for deeper geological conditions and cannot precisely complete a geological exploration task, the service life of the cable is affected when the length of the cable needs to be designed and calculated for the detection of the geological conditions at one depth and the detection cost is increased. The cable is especially suitable for the detection of the geological conditions of places with the frequent natural disasters, such as earthquake, mud-rock flow and landslide.

The invention relates to a double-body mechanical marine survey boat which comprises a boat body, a winch and a winch frame, wherein the winch and the winch frame are both mounted on the boat body. The double-body mechanical marine survey boat is characterized in that the lower part of the boat body is provided with symmetric double boat bodies; a forward-turning transducer bracket is mounted in the front of the middle part of the head of the boat body; a side-turning transducer bracket is mounted on one side of the boat body; and a moon well-type transducer telescopic bracket is mounted on the other side of the boat body. With the double-body boat type, the survey boat not only improves the storm resistance and stability, but also correspondingly improves the reliability of the data acquisition of the detection equipment, increases the science of the data and upgrades the survey level of the survey boat; and moreover, the forward-turning transducer bracket is mounted on the boat head, the side-turning transducer bracket and the moon well type transducer telescopic bracket are mounted on the two sides of the boat body respectively, and the brackets can be provided with different transducers respectively so as to realize synchronous survey on different positions and improve the efficiency and precision of the survey.

The invention provides a calibration cable based on geological detection and application of the cable. The cable comprises a cabled core composed of multiple conductors and a tensile strength component. A sheath layer is arranged outside the cabled core in an extruded mode, calibration rings are arranged on the sheath layer at an equal interval of L, the outer diameter of the sheath layer is D, the inner diameter of each calibration ring is d, and the surfaces of the calibration rings are red or of other marking colors and are made of rubber. According to the technical scheme, products are manufactured according to operation procedures of a manufacturing process, and a segment of the calibration cable is selected from the finished cable at will for detection. The calibration cable overcomes the defects that an existing detection cable has no calibration distance, and is not suitable for deep geological condition detection or cannot precisely finish geological detection tasks, the length of the cable needs to be designed and calculated when geological conditions of a certain depth are detected, the service life of the cable is influenced, and detection cost is increased. The calibration cable is especially suitable for being used on instruments and equipment for geological condition detection in places where earthquakes, debris flow, landslide and other natural disasters frequently occur.

The present invention provides a dairy cow production performance measurement standard substance and its preparation method and application, which comprises the components and corresponding horizontal gradients obtained by orthogonal design according to the following mass percentage range: the mass percentage range of fat is 0.20%-6.00%, Design 12 levels of gradients; the mass percent range of protein is 2.00%-4.50%, and 6 levels of gradients are designed; the mass percent range of lactose is 4.00%-5.00%, and 4 levels of gradients are designed; Uniform and stable, it meets the requirements of DHI determination work, the concentration range of components is wide, and the leverage value is relatively low, which reduces the influence of the correlation between fat and protein content in natural milk samples on the calibration accuracy of DHI standard substances. Using the DHI After the instrument is calibrated by the standard material, the accuracy of the instrument is improved, the determination level is improved and remains stable, and the consistency between laboratories is increased.

The invention provides an online measurement and control method for reducing the risk of DC commutation failure, which specifically includes the following steps: collecting the amplitude information of the transformer group, and transmitting the collected amplitude information to the lower computer; collecting the phase of the transformer group information, and transmit the collected phase information to the lower computer; the lower computer processes the amplitude information and phase information respectively, and sends the obtained amplitude information digital sampling value and phase information digital sampling value to the upper computer; the upper computer The digital sampling value of the amplitude information and the digital sampling value of the phase information are processed to obtain the amplitude spectrum, phase spectrum and phase sequence; the phase calibration method is used to iterate the amplitude spectrum and phase spectrum; the power quality information is analyzed and controlled by the switch The signal performs the corresponding control operation on the system switch. Compared with the prior art, the invention has the advantages of convenient testing, high efficiency, accurate measurement of each harmonic below the 31st order, and an error of less than 0.2%.

The telemetering remote-reading surface type nucleon moisture densitometer includes gamma-source positioning rod on which a handle is mounted and source rod which are fixed on the machine shell. The gamma-ray source is placed in the base end portion of source rod, the neutron ray source is fixed in bottom portion of machine shell, the gamme-ray detector and neutron ray detector are placed in the bottom portion of machine shell, and the panel on which the display screen and operation keyboard are mounted is placed on the panel of the machine shell, and the telemetering on-palm controller whose interior is equipped with wired control circuit of wireless control circuit is connected with keyboard of moisture densitometer by means of interface, and the computer and printer are connected with moisture densitometer keyboard by means of interface.

The invention relates to the technical field of low-current grounding capacitance current measurement, and specially relates to a low-current grounding capacitance current online measurement system. Aiming at two states that whether a neutral point of a small-current grounding system is grounded or not, an improved maximum displacement voltage method and a signal injection method are respectivelyadopted to measure and calculate the grounding capacitance current, so that the measurement efficiency of the capacitance current of the system and the all-working-condition operation capability are improved; secondly, by establishing a displacement voltage method control theory based on the arc suppression coil, a method of a capacitive current hybrid algorithm is provided by the system, the problems that errors exist in a traditional capacitive current calculation method and the compensation effect of the arc suppression coil is affected are solved, and the technical effect of improving thecompensation precision of the arc suppression coil is achieved; and aiming at the problem of large zero-sequence current and voltage change range, a displacement voltage dual-channel and high-precision measurement method is provided, and the technical effect of improving the measurement level of the displacement voltage and the capacitance current is achieved by adopting a high-range and low-rangemode.

The invention relates to an up-and-down symmetrical thrust bearing base for a small waterplane catamaran, which comprises an upper base and a lower base which are oppositely arranged at an interval, wherein a thrust bearing is arranged in the interval between the upper base and the lower base; the two sides of the outer wall of the thrust bearing extend outwards to form footings; the footings areconnected with the upper base or the lower base through vibration isolators; an upper platform is installed at the top of the upper base; shells are installed on the two sides of the interval betweenthe upper base and the lower base; the upper ends and the lower ends of the shells are fixedly connected with the upper base and the lower base respectively; each shell is of an arc-shaped outwards-protruding structure; and a plurality of reinforcing ribs are fixedly installed on the inner wall face of each shell. The up-and-down symmetrical thrust bearing base is used for static thrust transmission and dynamic excitation force control of the propulsion shafting of the small waterplane catamaran, and provides powerful technical support for radiation noise control of the small waterplane catamaran.

A flow cell includes: a flow channel through which a sample solution flows; an inlet section which communicates with the flow channel and to which the sample solution is supplied; a transfer section which includes a plurality of opening sections, one end side of which communicates with the flow channel and an other side of which opens to outside air, and which communicates with the flow channel, and draws in and guides the sample solution supplied into the inlet section to the flow channel; a detecting section which faces the sample solution in the flow channel; and a sealing member which unsealably seals at least either one of the opening section or the inlet section.