184results about How to "Avoid affecting the measurement results" patented technology

The invention relates to a method for measuring earth and rock by an unmanned aerial vehicle, comprising the following steps: S1 flight task planning and equipment selection; S2 performing flight task to obtain data; S3 establishing a three-dimensional model according to image data and geographic coordinate information; S4 combining engineering drawings and generating The three-dimensional model to calculate the earthwork volume of the survey area; S5 repeats the measurement at a certain time interval to calculate the engineering volume. The present invention can reduce the field workload and shorten the measurement period through the flight control system, satellite positioning system, flight data storage system and airborne camera set on the drone; avoid human intervention in the measurement process and affect the final measurement result, and The comparison and measurement of multiple sets of 3D models obtained by repeated measurement at a certain time interval can calculate the engineering quantity of earth and stone, which is beneficial to control the progress of the project.

The invention relates to a method for measuring density of slurry in a desulfurization absorption tower, which comprises the following steps: firstly selecting a low-pressure side pressure sampling point and a high-pressure side pressure sampling point in the vertical direction of an absorption tower body, then leading out sampling pipe sections from the high-pressure side pressure sampling point and the low-pressure side pressure sampling point respectively, next connecting a high-pressure side capillary tube and a low-pressure side capillary tube of a double-flange diaphragm differential pressure transmitter to a sampling pipe section respectively, and finally calculating a density value by a measured value delta P of the double-flange diaphragm differential pressure transmitter according to a formula rho1=(delta P + rho2 gh)/(gh), wherein in the formula, rho1 is the density of the slurry in the absorption tower, rho2 is the density of the filling liquid in the capillary tube, g is gravitational acceleration, and h is the altitude difference between the high-pressure side pressure sampling point and the low-pressure side pressure sampling point. The method can measure more conveniently and accurately, needs no complex operation or measures, can simply maintain corresponding used measuring equipment and devices with low cost, and ensure stable and reliable running of the measuring equipment and the devices.

A BOD on-line detector of sensor type is prepared as transferring sample in filter element of sampling unit A to sample cup of measuring unit C through sampling pump, connecting microbiological membrane transducer of measuring unit C to electrode interface of controlling unit B, applying instrument software to directly calculate out BOD of sample based on measurement signals of microbiological membrane transducer through signal collector and signal amplifier.

The invention provides a method for chip alignment, which comprises: firstly, providing a chip comprising a first material layer and a second material layer, wherein the second material layer is positioned on the first material layer and the first material layer has a first alignment mark; secondly, in a lithography machine, measuring the position of the first alignment mark; thirdly, patterning the second material layer and forming a second alignment mark by using the patterned second material layer; and finally, in the aerator, measuring the offset between the second alignment mark and the first alignment mark. In the invention, the relative position error between the material layers is measured by using the alignment marks, and the measurement result is not influenced by the error between different machines as the whole measurement is performed in the same lithography machine rather than the traditional overlay tool.

The invention relates to a tuning fork type quartz crystal oscillator resonant frequency measurement technology, in particular to a tuning fork type quartz crystal oscillator resonant frequency measurement method based on optical excitation and a device. The technical problem that the outside electromagnetic environment easily influences measurement and enables a result to be inaccurate when inherent frequency of an existing tuning fork type quartz crystal oscillator is measured is solved. The tuning fork type quartz crystal oscillator resonant frequency measurement method based on optical excitation comprises the following steps of (a) adopting laser beams to perform excitation on the tuning fork type quartz crystal oscillator to be measured; (b) introducing a probe beam while scanning the laser beam intensity modulation frequency; (c) acquiring reflection light intensity change information received by one receiving face at a spatial position and converting the intensity change into a corresponding electrical signal; (d) demodulating the electrical signal of reflection light and obtaining the inherent frequency of the tuning fork type quartz crystal oscillator to be measured according to a frequency response curve. By adopting the tuning fork type quartz crystal oscillator resonant frequency measurement method based on optical excitation, environmental noise interference is effectively avoided, and the probe problem in a narrow space is solved.

The invention discloses a fiber grating sensor for temperature measurement of a lithium battery pack and a temperature measurement method thereof. The fiber grating sensor comprises an optical fiber,one or more fiber gratings are arranged on the optical fiber, and a packaging mechanism is arranged outside the fiber gratings; the packaging mechanism is provided with a hole matched with the shape of a lithium battery pole. During temperature measurement, the fiber grating provided with the packaging mechanism is installed on the pole column of each single lithium battery, and each fiber gratingmonitors the temperature of the corresponding single lithium battery; the fiber is connected to a fiber grating demodulator to measure the reflection central wavelength of each fiber grating; according to the relationship between the reflection center wavelength and the temperature, the temperature value of the corresponding single lithium battery can be obtained through calculation, the sensor can be conveniently installed on the pole column of each single battery of the lithium battery pack, temperature monitoring of each single battery is achieved, and as the optical fiber is an optical passive device, the sensor is high in anti-interference capacity and high in reliability.

The invention discloses a stress measurement device based on a deflection method. The stress measurement device based on the deflection method comprises a girder clamping device, a force application loading device, a homogeneous girder and a supporting plate main body, wherein the beam clamping device is fixed on the supporting plate main body; a clamping end of the homogeneous girder is placed on the girder supporting device; a quasi cross laser device is mounted at a force application end of the homogeneous girder; the force application loading device comprises a loading supporting plate, a groups of supports which are fixed on the loading supporting plate, a stress gear, a unidirectional ratchet, a rope and a loading cutting edge; the stress gear and the unidirectional ratchet are fixed on a loading shaft; the loading cutting edge is fixed at the force application end of the homogeneous girder; a pull-pressure sensor is mounted on the loading cutting edge; one end of the rope is fixed on the stress gear; and the other end of the rope is fixed on the pull-pressure sensor. By the stress measurement device based on the deflection method, the homogeneous girder can be in a reliable preset stress state in a large force value range, and the measurement result is accurate.

The invention provides a device and a method suitable for on-line detection of particulate matters in a high-temperature gas pipeline. The device comprises an on-line detection unit and a preheating sweeping unit, wherein the on-line detection unit comprises a main sampling subsystem, a secondary sampling subsystem, a particle matter grain size on-line analyzer and a first flow measurement control subsystem, which are connected in series; the secondary sampling subsystem comprises a gas flow distributor and a secondary sampling nozzle; the gas flow distributor is provided with a cavity and two gas outlets and is divided into a main path and a side path; the main path is connected with the secondary sampling nozzle, the particle matter grain size on-line analyzer and the first flow measurement control subsystem sequentially in series, and the side path is connected with a second flow measurement control subsystem in series; and the preheating sweeping unit is connected onto the pipeline between the main sampling subsystem and the secondary sampling subsystem in parallel and used for sweeping and preheating the pipeline of the whole system. The device further can comprise an off-line detection unit and a long-term on-line monitoring unit. According to the device, the long-term on-line detection of the particulate matters in the high-temperature gas pipeline can be realized.

The invention provides air-pressure typed aluminium melt inclusion detection equipment and a method thereof, belonging to the field of casting technique. The detection equipment consists of three parts: an air pressure system, a temperature control system and a filter weight-measurement system; the air pressure system is arranged outside the range of temperature control and provides stable pressure difference for the filter weight-measurement system; the temperature control system is arranged inside the air pressure system and at the external side of the filter part of the filter weight-measurement system, thus ensuring stable temperature during the filtration process; the filter weight-measurement system consists essentially of two parts: a filter part and a weight-measurement part, wherein, the filter part is arranged in the temperature control system and the weight-measurement part is placed right below the filter part; the filter weight-measurement system completes the filtration of the inclusion in the aluminium melt and measures and memorizes the weight of the filtrated aluminium melt in real time. The pressure difference by air pressurization is high, thus avoiding the vacuum pressurized and filtrated hot air from corroding the container; the pressure container has safe and stable structure; and the equipment has compact structure and the measurement result of the inclusions in the aluminium melt is exact and highly effective.

The invention relates to a portable deepwater layered electric water sampling device. An extension device is arranged on a shore or a ship, a reel pipe device is arranged at one end of the extension device, and the other end of the extension device is fixedly connected with a fixed pulley. A water pipe and a bearing steel wire rope are wound on the left side and the right side of the reel pipe device respectively, the bearing steel wire rope bypasses the fixed pulley to be connected with a shell of a water inlet device, one end of the water pipe bypasses the fixed pulley to be connected with a water outlet of the water inlet device, and the other end of the water pipe is connected with a water collecting device. According to the water sampling device, the specific water depth is calculated through the water pressure, so that water sampling layering is more accurate; water sampling through a submersible pump is more labor-saving and not limited by the size of a water sampler; meanwhile, the water sampling width can be controlled, and the water sampling area can be adjusted according to needs; and finally, the offshore water sampling distance can be prolonged, and the water bank disturbance effect can be reduced.

The invention discloses a theodolite for modern engineering. The theodolite for modern engineering comprises a control frame installed on a tripod, wherein a mounting rack is rotationally installed atthe top end of the control frame through a rotating shaft, a rotary driving assembly controlling the mounting rack to rotate is arranged between the mounting rack and the control frame, an adjustingcavity is arranged in the mounting rack, a theodolite body is rotationally installed in the adjusting cavity through a rotating rod, a worm wheel is fixedly installed at the portion, in front of the theodolite body, of the rotating rod, and the right side of the worm wheel is engaged with a worm. Rotation, direction regulation and locking work can be automatically conducted on the theodolite, there is no need to manually twist a knob for adjustment, the operation of rotation, direction regulation and locking work of the theodolite is easy and convenient, the adjustment precision is high, the adjustment speed is high, the stability of the theodolite can be effectively enhanced by locking the theodolite body and the mounting rack, and the theodolite is prevent from shaking during measurement.

The invention discloses a sampling device for soil improvement, which comprises a drill bit and a sampling column, wherein a plurality of propelling cavities are formed in the sampling column, a propelling air bag is arranged on the inner wall of one side of each propelling cavity, an inflation pipe is arranged above each propelling air bag, the propelling air bags are connected with one another through the inflation pipes, an inflation pump is arranged at the top of the inflation pipe at the uppermost end, the inflation pump is fixedly connected to the outer wall of the top of the sampling column, a sampling cylinder is arranged on one side of each propelling air bag, a smashing rotating shaft is rotatably connected to the inner wall of each sampling cylinder, a plurality of mounting grooves are formed in the outer wall of each smashing rotating shaft at equal intervals, pentagonal cutters are connected to the inner walls of the mounting grooves in a sliding mode, a plurality of third springs are arranged between the pentagonal cutters and the mounting grooves, and a plurality of arc-shaped smashing cutters are arranged between every two pentagonal cutters. Sampled soil can be smashed, and then the situation that the soil is bonded together, and consequently the soil cannot enter the sampling cylinder or cannot be discharged from the sampling cylinder is avoided.

The invention provides a wireless heating wind parameter measurement device, which comprises a shell, a rotation shaft, a windward assembly and a heating device, wherein the shell is provided with an inner cavity; the rotation shaft is arranged in the shell in a rotatable mode; the windward assembly is fixed on the rotation shaft and located at the top end of the shell; and the heating device is located in the shell and/or located in the windward assembly for heating the windward assembly. The heating assembly is connected with the windward assembly; when temperature of the outdoor environment where the measurement device is located is over low, the heating assembly is started for heating the windward assembly, water vapor, frost and the like in the air can be prevented from being frozen on the measurement device, rotation of the windward assembly can be prevented from being influenced, and the measurement result is not influenced.

The present invention provides a polymer plastic melt flowing rate meter with a characteristic of high measurement precision. The polymer plastic melt flowing rate meter comprises a thermal insulation housing, a material heating cylinder, a cutter plate, a cutter groove and the like, wherein the material heating cylinder is arranged inside the thermal insulation housing, the cavity between the thermal insulation housing and the material heating cylinder is a vacuum thermal insulation chamber, the thermal insulation housing is provided with an evacuation port, the bottom portion of the material heating cylinder is provided with a die, the lower end of the thermal insulation housing is provided with the cutter plate, a material cutting cutter is arranged inside the cutter groove through a pneumatic control element, a piston is arranged inside the material heating cylinder, the upper end of the piston is connected to a connection rod, a weight seat is arranged on the upper end of the connection rod in a screwed connection manner, and the centers of the piston and the connection rod are provided with gas suction channels. According to the present invention, the vacuum thermal insulation chamber is arranged, and the vacuum thermal insulation chamber and the thermal insulation housing are co-used to carry out thermal insulation on the material heating cylinder, such that the thermal insulation effect is further enhanced, and the heat loss is substantially avoided so as to save the energy source.

The invention discloses soil liquid-plastic limit combined tester for a water conservancy project. The tester comprises a base, two ends of a lower surface of the base both are provided with support legs, one end of an upper surface of the base is provided with a tester main body, the tester main body and the base are structurally integrated, one end of a front surface of the base is provided witha protective cover, a connection part between the protective cover and the base is provided with a hinge, and the protective cover is rotationally connected with the base through the hinge. With a hollow column designed on the upper surface of the base, influence on a measurement result caused by instability of a sample cup placed on the upper surface of a lifting platform in use is avoided, rotation of a hand wheel can be started after a handle is hold by one hand, rotation of the hand wheel droves a connection rod to rotate at the inside of the hollow column, thus, an end part of the connection rod is connected with the inside of a clamp board through screwing, the clamp board and an external surface of the sample cup are fixed closely, and a problem of influence on the measurement result caused by instability of the sample cup is solved.

The invention discloses an intelligent height and body weight monitoring system for kids. The system comprises a wall hanging mechanism, a display mechanism and a body weight detection mechanism; the wall hanging mechanism comprises transmission screw rods, slide bars and a crossbeam, the two axial ends of the crossbeam are provided with sliding sleeves respectively, and each slide sleeve sleeves the corresponding transmission screw rod and slide bar; the display mechanism comprises a display control panel and a cover plate in rotational connection, and the display control panel is arranged on the crossbeam; the body weight detection mechanism comprises a pedal, and the pedal is provided with a pressure sensor; the cover plate is provided with a supersonic wave sending module, and the pedal is provided with a supersonic wave receiving module; and the pressure sensor, the supersonic wave receiving module and the supersonic wave sending module are connected to a single-chip microcomputer wirelessly. Both a storage module and a clock module are connected with the single-chip microcomputer to record the height and body weight measured at present time and present time information. The system uses a wall-hanging type structure, reduces the land occupation area, avoids height and body weight measuring instruments from damage due to movement in the long-term using process, and is high in automatic degree.

The invention discloses a press-fitting device for a magnetic isolation tube and a valve body of a booster valve. The valve body is provided with a first through hole, and the magnetic isolation tube is provided with a second through hole. The press-fitting device It includes a floating probe, a plastic push rod, a moving iron, a displacement sensor, a pressure sensor and a connection block; the plastic push rod is placed in the first through hole, and is located between the moving iron and the floating probe , the bottom of the plastic push rod is an arc surface structure, the height of the top of the plastic push rod is higher than a preset height of the valve body; the floating probe is placed directly below the plastic push rod, and is located In the first through hole, it is collinear with the plastic push rod, and one end of the floating probe is in point contact with the bottom of the plastic push rod; the moving iron and the valve body pass through the In the second through hole; wherein, when the moving iron is energized, it moves downward toward the direction of the plastic push rod.

The invention discloses an electrode information management device, which includes: a storage module for storing life information and first time information of the electrodes; the first time information indicates the total use time of the electrodes up to the last use. The analysis module is used to obtain the life information and the first time information, and accumulate the first time information during the use of the electrode, and judge whether the accumulated first time information is greater than the life of the electrode, and if so, send an alarm command; at the same time , the analysis module updates the performance information in real time, and judges whether the performance of the electrode meets the specified value according to the updated performance information, and if not, sends an alarm command, and the alarm module is used to receive the alarm command and issue an alarm . The invention reminds workers to replace the electrodes in time through a plurality of judging conditions, avoids the influence of measurement results due to the use of expired electrodes, and ensures accurate determination of measurement tasks.