149results about How to "Wide measurement range" patented technology

The invention discloses a rear-mounted holographic focusing schlieren imaging method. The method comprises the following steps: after a laser emits a laser beam, the laser beam is divided into a main light source and holographic reference light; a main light source sequentially passes through a multi-stage beam expander, a soft light screen, a Fresnel lens and a source grating to obtain light beams with alternate brightness and darkness, and the light beams irradiate a flow field; the light beam penetrating through the flow field is focused by the focusing lens, an image of the source grating is formed at the knife edge grating through the focusing lens, and the light beam penetrating through the flow field is modulated by the knife edge grating, so that an image of the section of the flow field is formed behind the knife edge grating; the light beam modulated by the knife edge grid passes through the field lens and is recorded together with the holographic reference light to obtain a holographic focusing schlieren map; performing digital reconstruction to obtain three-dimensional flow field position information; and calculating the three-dimensional density gradient and the density value of the flow field based on the imaging principle of focusing schlieren. The invention further discloses a rear-mounted holographic focusing schlieren imaging system. According to the method and the system, the ultra-high-speed flow field can be measured, and the requirement of an ultra-high-speed aircraft test on fine quantitative measurement of the three-dimensional flow field is met.

The invention belongs to the technical field of sewage pipeline flow detection, and particularly relates to a sewage pipeline flow calculation method based on electromagnetic induction, which comprises the following steps: step 1, a detection mechanism is arranged between two butt-joint flowing sewage pipelines, and the detection mechanism is composed of a measuring pipe, an electrode and an excitation coil, the magnet exciting coil wraps the outer arc surface of the measuring tube. The sewage pipeline flow calculation method based on electromagnetic induction is high in measurement precision and suitable for various conductive media including sewage, corrosive liquid and a mixture containing solid particles; the measuring range is wide, and the device is suitable for measuring fluids with different pipe diameters and flow ranges. The electromagnetic flowmeter can be quickly mounted on the sewage pipe through the quick clamping mechanism, so that the mounting time is shortened, the labor intensity is reduced, and maintenance and calibration are facilitated; measurement errors caused by fluid interference are avoided by reducing accumulation of sediments, and the accuracy of circulation measurement is further enhanced by circular motion measurement of the electrodes.

The invention relates to an inertial navigation / polarization compass / laser velocimeter integrated navigation method, which belongs to the technical field of inertial navigation / integrated navigation, and comprises the following steps: mounting and fixing an inertial navigation system, a polarization compass and a laser velocimeter on a carrier, and acquiring coordinate systems of sensors; establishing a polarization compass error equation and a laser velocimeter error equation by considering a course angle installation error, a pitch angle installation error and a scale error of the laser velocimeter; and deriving an inertial navigation / polarization compass / laser velocimeter combined system state equation based on the error equation, establishing a measurement equation by taking the difference between the speed calculated by inertial navigation and the speed of the laser velocimeter and the product of the polarization vector of the polarization compass and the sun vector as observed quantities, and carrying out estimation and feedback correction on the system state. The invention provides an inertial navigation / polarization compass / laser velocimeter combined navigation method in a satellite navigation denial environment, which realizes full-autonomous and high-precision directional positioning.

The utility model provides a wireless temperature measuring device which comprises a wireless temperature measuring host, an outer shell is arranged on the wireless temperature measuring host, a display is arranged at the front end of the outer shell, a control button is arranged below the display, a wireless temperature sensor is arranged in the wireless temperature measuring host, and the wireless temperature sensor is connected with the wireless temperature measuring host. An electric alloy sheet is arranged in the wireless temperature sensor, a temperature probe is arranged on the inner side of the electric alloy sheet, the electric alloy sheet is sleeved with three silica gel sheaths, and sheath threads are arranged on the inner side of each silica gel sheath. According to the utility model, the silica gel sheath is arranged on the electric alloy sheet, so that the durability and the stability of the electric alloy sheet are improved. The silica gel sheath has good high temperature resistance and elasticity, can buffer the attachment between the tested part and the power taking sheet, and reduces the looseness caused by temperature change or external factors.

The invention belongs to the related technical field of flexible electronic devices, and discloses a flexible stretchable electronic device and a preparation method and application thereof based on laser surface treatment.The method comprises the following steps that firstly, arrangement patterns of micro-grooves are set according to performance requirements of the flexible stretchable electronic device to be prepared; secondly, the surface of the substrate is ablated through picosecond ultraviolet laser to form the micro-gullies, and the geometrical characteristics of the micro-gullies are adjusted by adjusting parameters of the picosecond ultraviolet laser; step 3, sputtering a functional layer on the surface of the micro-gully; and 4, macroscopically patterning the functional layer to obtain the flexible stretchable electronic device. The method is simple in technological process, suitable for various elastic-plastic substrates, suitable for various functional materials and convenient to use in a large area, can be combined with other macrostructure / material design, and meanwhile is suitable for further enhancing performance.

The invention belongs to the technical field of organic photoelectrochemical transistors, and particularly relates to an organic photoelectrochemical transistor sensor based on a shadow effect Pt / n-Si grid and preparation and application of the organic photoelectrochemical transistor sensor. The sensor comprises a Pt / n-Si grid electrode based on the shadow effect and an organic photoelectrochemical transistor, the organic photoelectrochemical transistor comprises an electrolyte solution, a source electrode, a drain electrode and an organic semiconductor film, the source electrode and the drain electrode are spaced, the source electrode and the drain electrode are covered with the organic semiconductor film, and glucose oxidase and hydrogen peroxide horseradish enzyme are modified on the Pt / n-Si grid electrode. When the sensor is used for glucose detection, the two enzymes can catalyze glucose to generate cascade reaction to generate precipitates, photo-generated voltage generated by the grid electrode can be reduced along with increase of the precipitation amount, then the change of the grid electrode voltage is further amplified through channel current, then the detection sensitivity is greatly improved, and the sensor is light in structure and convenient to use. The method is easy to integrate, wide in application scene and good in development prospect.

The embodiment of the invention provides an energy spectrum measurement system and a spectrum unfolding method of the energy spectrum measurement system. The energy spectrum measurement system comprises an energy spectrum measurement device. The energy spectrum measurement device comprises a shielding assembly, a plurality of measurement assemblies and an absorption sheet assembly. The shielding assembly is provided with a mounting cavity, and one end of the mounting cavity is open to form an incident port for X-rays to enter. The measuring assembly comprises a thermoluminescence dosimeter. The absorption piece assembly comprises a first absorption piece and a plurality of second absorption pieces, the first absorption piece is arranged on the outer side of the incident port, the second absorption pieces are arranged in the mounting cavity, and the measuring assembly is arranged between the first absorption piece and the adjacent second absorption piece; the measuring assemblies are arranged between the adjacent second absorbing pieces, and the first absorbing pieces and the second absorbing pieces are made of different materials. The energy spectrum measurement system provided by the embodiment of the invention is good in measurement effect.

The invention discloses an automatic detecting and adjusting device for a bogie. The automatic detecting and adjusting device comprises a gantry motion unit supporting device, a gantry type motion measuring unit and a gantry type motion adjusting unit. The gantry motion unit supporting device comprises two equipment foundations, a gantry motion bottom adjusting guide rail, a gantry motion top adjusting guide rail, a cross beam and stand columns, the two equipment foundations are symmetrically arranged on the two sides of the gantry motion unit supporting device, the two stand columns are installed on the equipment foundation on each side, and the cross beam of a high-low double-layer step structure is installed on the two stand columns. A gantry motion bottom adjusting guide rail is installed on a lower step of the cross beam and used for installing a gantry type motion measuring unit and achieving displacement of the gantry type motion measuring unit along the gantry motion bottom adjusting guide rail, and a gantry motion top adjusting guide rail is installed on an upper step of the cross beam. And the gantry type motion adjusting unit is mounted, and the displacement of the gantry type motion adjusting unit along the gantry motion top adjusting guide rail is realized. The device can be suitable for measurement and adjustment of bogies of various specifications and types, the measurement range is wide, and the adjustment efficiency is high.

The invention relates to the field of liquid on-line monitoring, and provides an electrochemical sensor for measuring conductivity and dielectric constant of liquid, comprising: a probe comprising a first electrode plate, a second electrode plate and a third electrode plate which are successively arranged; the measuring circuit comprises an RC circuit, an amplifying circuit, a comparison circuit and a NOT gate circuit, the NOT gate circuit is used for obtaining a fourth voltage u4, the duration time of a high level in the fourth voltage u4 is first time t1, the duration time of a low level in the fourth voltage u4 is second time t2, and the first time t1 is a second time t2; the first time t1 and the second time t2 are used for determining the conductivity and the dielectric constant. The dielectric property is determined through accurate time measurement, the measurement technology and high time / bandwidth are integrated together, and very high precision and repeatability are achieved. Wherein the accuracy of the conductivity can reach piezemens / meter (pS / m), and the accuracy of the dielectric constant can reach 0.0001.

The invention belongs to the field of quantum sensors, and discloses a rapid magnetic tracking quantum magnetic imager without radio frequency microwaves, which is a quantum magnetic imager provided by utilizing a color center ensemble rapid induction magnetic field under the condition without microwaves. The instrument is composed of a plurality of systems: an excitation light path, an imaging light path, a detection light path and a magnetic target to be detected. The excitation light path can generate high-quality laser for exciting a to-be-measured target; the imaging light path can be used for quickly positioning a to-be-measured target; the detection light path can collect weak optical signals generated by excitation of the to-be-detected target for further analysis; the fluorescence acquisition and analysis circuit system can collect and detect fluorescence signals in a light path so as to be connected with an upper computer for soft control and accurate analysis processing; air flow is injected into a magnetic target to be detected through the injector, and the magnetic target is controlled to move in the labyrinth-shaped pipeline. The invention provides a valuable method for the rapid magnetic tracking of the magnetic target based on the color center ensemble, so that the application range of the method is expanded.

The invention discloses a power transmission line suspension clamp temperature measuring device, and relates to the technical field of suspension clamp temperature measurement, the power transmission line suspension clamp temperature measuring device comprises a temperature measuring mechanism and a mounting mechanism, the temperature measuring mechanism comprises a temperature measuring sensor used for measuring the surface temperature of a suspension clamp, the temperature measuring sensor is provided with a temperature measuring end and a wiring end, and the temperature measuring end abuts against the suspension clamp; the terminal is connected with the transmission antenna through a wire. The temperature monitoring device is used for temperature monitoring work of the suspension clamp, and solves the problem of temperature monitoring blind area coverage of important electrical fitting connection parts of a power transmission line; the device adopts a lightweight design, the connection part of the suspension clamp body does not need to be transformed, and the installation is convenient; the contact type temperature measuring sensor is adopted for measuring temperature, the measuring range is wide, the detection precision is high, signal transmission is carried out in cooperation with the transmission antenna, real-time temperature monitoring and returning and data monitoring analysis of the suspension clamp are achieved, the risk that a power transmission line wire or hardware fitting is too high in temperature, and consequently line outage is caused can be reduced to a large extent, and the working efficiency is improved. And the temperature measurement efficiency of the suspension clamp is improved.

The utility model relates to a vehicle shifting device which comprises a vehicle body, a power supply and a central control system, the bottom of the vehicle body is connected with a plurality of Mecanum wheels, and each Mecanum wheel is driven by a respective driving motor to operate; a lifting device is arranged in the middle of the vehicle body and used for lifting a transferred vehicle. Wheel clamping devices are arranged on the two sides of the vehicle body respectively, each wheel clamping device comprises two clamping wheels arranged at intervals, and the two clamping wheels are driven by corresponding lead screw transmission mechanisms to get close to each other or get away from each other respectively; an ultrasonic sensor is arranged in the middle of the wheel clamping device and used for sensing whether a clamped wheel is lifted or not. A laser radar and a camera matrix are arranged at the front end of the vehicle body, and the laser radar and the camera matrix are used for sensing information of the environment where a transferred vehicle is located; and the hollow system is used for controlling the operation of the whole vehicle shifting device. The mobile positioning device can ensure accurate mobile positioning of each vehicle, and is suitable for different environments.

The utility model provides a semiconductor thermistor temperature sensor, which relates to the technical field of temperature sensors and comprises a coating layer, a lead is fixedly mounted in the coating layer, a mounting shell is fixedly mounted at the bottom end of the coating layer, a circular groove is formed in the bottom end of the mounting shell, a side groove is formed in the inner wall of the circular groove, and the side groove is communicated with the mounting shell. A cylinder is arranged on the inner wall of the circular groove, a side block is fixedly installed on the surface of the cylinder, and a thermistor is fixedly installed at one end of the cylinder. According to the utility model, a worker is allowed to replace different thermistors according to actual application scenes, the flexibility and adaptability of the sensor are improved, the sensor can be suitable for wider temperature measurement requirements, rapid replacement of the thermistors is realized through a simple and visual mechanical structure, and the cost is reduced. A worker can complete the replacement of the resistor only through several simple steps without complicated tools or professional knowledge, so that the maintenance efficiency and the operation convenience are remarkably improved.

The utility model relates to the technical field of resistivity measuring equipment, and particularly discloses a tool device for measuring the resistivity of a semi-conductive shielding layer of a conductor, which comprises a mounting bracket, a position adjusting mechanism arranged at the upper end of the mounting bracket, and a spring pressing mechanism arranged at the lower end of the position adjusting mechanism, the position adjusting mechanism is used for adjusting the position of the spring pressing mechanism, the spring pressing mechanism comprises a pressing assembly and a pre-pressing assembly, the pressing assembly comprises a pressing glass steel plate, the pre-pressing assembly comprises a pre-pressing pressing plate, and an electrode mechanism is arranged at the bottom end of the mounting bracket; according to the utility model, the metal upper top plate and the metal lower bottom plate are adopted, so that the whole tool forms a whole body and is more stable during placement; in the sample compressing process, four electrode positions are compressed at the same time by rotating a wobble plate, the installation steps are simple and convenient, the pre-compressing assembly can finely adjust the angle and the position of a cable, and the placing position of the tested cable is horizontally centered; the device is not limited by the external diameter of a test cable, is wide in measurement range, and facilitates the use.

The invention discloses a river sediment content measuring device and method based on ultrasonic attenuation, and relates to the field of river sediment concentration monitoring. A digital-to-analog conversion module in the device is arranged on an FPGA development board; the digital-to-analog conversion module is connected with the ultrasonic transmitting probe; the ultrasonic receiving probe is connected with the analog-to-digital conversion module; the analog-to-digital conversion module is connected with the FPGA development board; the ultrasonic transmitting probe is used for transmitting ultrasonic waves under the driving of the excitation signal transmitted by the digital-to-analog conversion module; the ultrasonic waves are used for spreading in a to-be-detected river in a gradual attenuation mode; the ultrasonic receiving probe is used for receiving ultrasonic waves propagating in a river to be detected, generating voltage signals according to the received ultrasonic waves and sending the voltage signals to the FPGA development board; and the FPGA development board is used for determining the sediment concentration of the river to be measured according to the voltage signal and the calibration curve. According to the invention, high-precision and wide-dynamic-range real-time measurement of the sediment content of the river can be realized.

This utility model relates to the field of generator set maintenance technology, and in particular to a generator set fault location circuit. A voltage acquisition element measures and collects voltage waveform signals from the generator terminals and the low-voltage side of the main transformer; a current acquisition element measures and collects the zero-sequence currents from the generator terminals, the high-voltage side of the excitation transformer, the low-voltage side of the main transformer, and the high-voltage side of the high-voltage transformer; the fault location element transmits data through a signal transmission interface connected to the terminals of the current acquisition element. This system can accurately determine the location of a single-phase ground fault, narrowing the fault location range and improving maintenance efficiency. The optical current transformer is unaffected by conductor spatial arrangement and magnetic field imbalance, accurately measuring zero-sequence current with a wide measurement range and no saturation problem. The insulating frame of the primary sensing unit can be designed according to the size and arrangement of the three-phase conductors being measured in the protected generator set, without strict requirements on conductor shape, size, and arrangement, facilitating installation and maintenance.

The utility model provides a steel ladle refractory erosion measuring tool which is provided with a graduated scale. The middle of the scale is vertically connected with the measuring base; vernier gauges are slidably and adaptively mounted at two ends of the graduated scale respectively; the bottom of the vernier scale is provided with a measuring jaw which can stretch vertically and can identify the vertical stretching length. The bottom end of the measuring jaw is vertically and fixedly provided with a horizontally-arranged tip. The tip of the tip faces inwards, and the tip of the tip and the vertical end face of the inner side of the vernier scale are vertically coplanar. The technical problems that an existing measuring tool is relatively high in manufacturing cost and cannot achieve adaptive adjustment of measurement of different depths and thicknesses are solved. The tool is simple in overall structure, low in manufacturing cost, convenient to adjust and use, wide in measurement range, excellent in universality and suitable for popularization, and particularly can measure wall thicknesses of different depths.

The invention discloses a wind power tower with adjustable height and an adjustment method thereof, which belongs to the technical field of wind power generation, and solves the problem that the existing wind power tower cannot maximize the utilization of wind energy resources due to the fixed height; the wind power tower comprises a wind power tower body, the wind power tower body comprises a tower assembly, at least one lifting assembly is arranged at the bottom of the tower assembly, a plurality of wind speed measuring assemblies are arranged on the tower assembly in the vertical direction, and the top of the tower assembly is connected to a wind turbine. The controller of the invention collects wind condition data at different heights in real time through a plurality of wind speed measuring assemblies, and obtains the height and wind direction of the current maximum wind speed in real time. Compared with directly using the wind condition data fed back by the wind turbine, the wind speed measuring assembly has a wider measurement range and higher measurement accuracy; the controller changes the height of the tower assembly through the lifting assembly, moves the wind turbine to the height of the maximum wind speed, and uses a yaw device to make the wind turbine face the wind direction of the maximum wind speed, so as to maximize the utilization of wind energy resources.

The invention relates to the technical field of detection devices, and discloses a stroke position detection component of a cylinder driver for a hot runner, comprising a displacement detection device and a cylinder, wherein the movement of a piston in the cylinder controls the movement of a valve needle in a mold, an uneven stepped protrusion is present on the top of the piston, the displacement detection device is arranged and fixed above the outside of the cylinder, an outer ring ultrasonic transmitter and an inner ring ultrasonic transmitter arranged in the displacement detection device are used to detect the distance between pistons in multiple cylinders, and the measurement error of the outer ring ultrasonic transmitter is greater than the measurement error of the inner ring ultrasonic transmitter, the position where the inner ring ultrasonic transmitter is arranged corresponds to the position of the protrusion on the piston, a scattering layer is provided between the outer ring ultrasonic transmitter and the inner ring ultrasonic transmitter and the cylinder, a crystal medium is provided in the scattering layer, the grains in the crystal medium are small and arranged in an orderly manner, and the sound waves emitted by the outer ring ultrasonic transmitter and the inner ring ultrasonic transmitter first pass through the crystal medium and then penetrate into the cylinder.

The utility model provides a single iron core measures ac leakage current system, it has solved leakage current detection circuit cost higher problem, it includes power module, power module is connected with measurement circuit and MCU module, measurement circuit has two groups of operational amplifier follower, one group of operational amplifier follower is connected through sampling resistance R9 with the one end of the measurement coil that is wound on annular core, the other end of measurement coil is connected through another group of operational amplifier follower with the PWM pin of MCU module, the ADC pin of MCU module is connected on sampling resistance R9. The utility model has good leakage detection effect, lower cost and the like advantages.

The utility model relates to a detection circuit for a touch screen. A port of the touch screen is sequentially connected with a voltage dividing module, a detection module and an output module. The voltage dividing module is used for simulating voltage when the touch screen is pressed and inputting the voltage to the detection module, the detection module is used for detecting the voltage, and when the voltage is within a set voltage range, the output module displays the voltage. The voltage division module of the detection circuit can simulate voltage division when the touch screen is pressed, so that resistance detection can be performed on a plurality of ports of the touch screen at the same time by pressing the touch screen once during detection, and rapidness and convenience are achieved; the detection module is used for limiting the standard voltage range of the touch screen and comparing the partial voltage generated by the voltage dividing module, if the partial voltage is within the standard voltage range, the detection result is displayed on the output module, automatic detection can be achieved, manual operation is not needed, time and labor are saved, and the detection result is accurate.

The utility model provides a phase-change temperature testing device, which comprises a liquid storage tank for containing heat transfer fluid to soak a test sample; the magnetic stirring module comprises a body and a rotor, a liquid storage tank is placed on the body, and the rotor placed in the liquid storage tank rotates to stir the heat transfer fluid; a heating module for heating the heat transfer fluid; the test module comprises a gravity table, a supporting structure, a temperature sensor and a laser ranging probe; the gravity table is pressed on the test sample and ascends along with the heated rebound of the test sample; a laser ranging probe is installed on the supporting structure and located above the gravity table to monitor the ascending distance of the gravity table. The temperature sensor is arranged in the liquid storage tank to measure the temperature of the heat transfer fluid; and the clamp is arranged at the bottom of the inner side of the liquid storage tank and is used for clamping a test sample. The phase transition temperature testing device measures the phase transition temperature of the shape memory alloy product based on the BFR testing method, the detection cost can be reduced, and the detection efficiency and the detection precision can be improved.

The present invention relates to the technical field of flow detection, and specifically to a flow detection system and a maintenance method thereof. The flow detection system includes a mounting adapter, a rectifier box, an electromagnetic flowmeter and a water outlet elbow. The rectifier box is located on one side of the mounting adapter, and an opening is provided at the top thereof. A drainage pipeline is provided on one side thereof, and a functional sensor is integrated therein; the electromagnetic flowmeter is fixed on the drainage pipeline on one side of the rectifier box; the water outlet elbow is provided on one side of the electromagnetic flowmeter and away from the rectifier box, and the opening of the water outlet elbow is provided toward the top. The electromagnetic flowmeter has many advantages such as non-contact measurement, low requirements for the measured medium, wide measurement range, and high accuracy, and is widely used in various sewage flow measurement occasions. However, the electromagnetic flowmeter can only measure full pipe flow, and the sewage pipe is usually designed to be non-full pipe. By providing a water outlet elbow, the opening of the water outlet elbow is provided toward the top, so that the pipe is full of pipe flow, which meets the measurement requirements of the flow sensor.

The utility model discloses a measuring device for accurately measuring a lowering value of a railway turnout frog. The measuring device comprises a leveling instrument and a digital display vernier scale. Wherein the digital display vernier scale is fixedly mounted in the middle of the leveling instrument; meanwhile, the leveling instrument is adsorbed and fixed to the center positions of the top faces of the wing rails on the two sides through the two sliding blocks connected to the leveling instrument in a sleeving mode, the heights of the sliding blocks on the two sides are adjusted by observing the spirit bubble installed on the leveling instrument, and it is guaranteed that the leveling instrument is horizontal. In this way, the digital display vernier scale is driven to move transversely in the mode of transversely moving the horizontal ruler, the digital display vernier scale measures the heights of the two rail pieces at the position of the characteristic section respectively, and the height difference is the reduction value at the position. The measuring tool has the advantages of being convenient to carry, simple to use and accurate in measured data, and the problem that no measuring tool exists is solved.

The present invention discloses a multifunctional piston flowmeter, which relates to the technical field of fluid flow. The present invention provides an axially movable measuring cylinder, which can measure the flow of the fluid without providing an overly large movable part in the measuring pipeline; adopts three measuring methods, which can effectively ensure the stability of the measurement data, and comprehensively judge the flow of the fluid through three sets of measurement data to obtain more reliable flow data; when measuring a low-speed flowing fluid, more accurate measurement data can be obtained, and at the same time, a high-speed flowing fluid can be measured, achieving a very wide measurement range.

The present invention discloses an auxiliary installation device for a bushing-type electronic transformer for a ring network cabinet, wherein a main box is installed on one side of the transformer body, a sliding plug is symmetrically and slidably installed inside the main box, a pull rod is installed in the middle of the side end face of the sliding plug, and the pull rod is slidably connected to the main box, a frame rod is slidably installed on the end of the pull rod, one end of the frame rod is rotatably installed with a limited seat, and the other end of the frame rod is rotatably installed with a base. The present invention improves the stability of various orientation bolts installed on the transformer body, improves the balance of load force provided by each bolt, effectively solves the warping and misalignment phenomena, indirectly improves the stability of the transformer body in later use, and can make the torsional force borne by the bolts during installation more compatible and matched with the compressive performance of the ring network cabinet and the transformer body, effectively avoids the thread slippage phenomenon, and improves the flexibility, efficiency, convenience, reliability and efficiency of the bolt assembly work.

The utility model relates to the technical field of building construction, and discloses a constructional engineering verticality detection ruler, which comprises a fixed shell, a connecting rod is slidably connected in the fixed shell, one end of the connecting rod is fixedly connected with a pressure plate, the outer wall of the pressure plate is fixedly connected with a rotating handle, and the other end of the connecting rod is fixedly connected with an insection column. A first spring is arranged on the outer wall of the insection column, the outer wall of the first spring is fixedly connected to the inner wall of the fixing shell, and the other end of the rotating column is fixedly connected with an adjusting disc. According to the utility model, the pressing disc is pressed, the pressing disc drives the insection column to move through the connecting rod, the insection column drives the adjusting disc to rotate through the gear, then the rotating handle drives the pressing disc to rotate, the connecting rod drives the clamping block to slide to the limiting groove, the rotating angle of the adjusting disc is fixed, and more size data are measured through the measuring tape. Therefore, the effects of covering a wider measurement range and improving the flexibility and accuracy of measurement are achieved.

The invention provides a wide-range liquid metal oxygen concentration sensor error analysis method and device, relates to the technical field of liquid metal experiment devices, and solves the technical problem that the output voltage error test range of an existing liquid metal oxygen sensor is narrow in coverage. According to the invention, Ni and Fe are orderly added into the liquid metal in the PbO oxygen saturation state, and NiO and Fe3O4 can be sequentially generated through reduction reaction, so that the error analysis range of the liquid metal oxygen sensor can be expanded from 0.62-0.85 to 0.62-1.22 V by measuring the output voltage of the oxygen sensor in the Ni / NiO and Fe / Fe3O4 oxygen saturation states and comparing the output voltage with a theoretical saturation potential value. On the basis of widening the analysis range, the error analysis applicability can be improved, and the accuracy evaluation capability of the liquid metal oxygen sensor is improved; the device has the advantages of being wide in measurement range, good in sealing performance, accurate in positioning, convenient to disassemble and assemble and the like, and meets error analysis and accuracy evaluation of the liquid metal oxygen concentration sensor in a wide measuring range.

The utility model discloses a frog rim groove width measuring device, which relates to the frog rim groove width measuring field, and comprises a profiling main body, a top surface fitting block and an auxiliary ruler, the profiling main body comprises a profiling part and a main ruler part which are integrally formed, a profiling fitting surface matched with a frog working edge arc is formed on the lower surface of the profiling part, and the top surface fitting block and the auxiliary ruler are integrally formed. The main ruler part is provided with a main ruler scale line with the frog point rail working edge gauge line as the starting point, the top face attaching block is detachably connected with the end, away from the main ruler part, of the profiling part, the auxiliary ruler is movably arranged on the main ruler part, and the length directions of the auxiliary ruler and the main ruler part are located on the same straight line. The auxiliary ruler is provided with an auxiliary ruler scale line with the frog wing rail side gauge line as the starting point. According to the utility model, through the profiling main body with the profiling binding surface, the profiling main body can be directly attached to a frog working edge arc, accurate positioning at a frog point rail working edge gauge line is completed, the width of a frog rim groove can be accurately measured, and the whole width measuring device has a wider measuring range.

The invention provides a missile wing bending and torsion angle measuring device and method. The method can be used for measuring the deformation angle of the missile wing on the ground under the no-load condition and can also be used for measuring the deformation angle of the missile wing under the loading condition. The device has the advantages of being simple in structure, convenient to install, adjustable in rigidity, high in stability and good in reliability, effectively solves the problem that the relative torsion angle of a missile wing is difficult to measure after the missile wing is assembled on a bomb, can meet the requirement that the device does not shake back and forth in the working process, guarantees the stability of a measurement system in the measurement process, and improves the measurement accuracy. According to the special structural form, structural parts of different sizes can be customized according to different aerial bomb weight grades and missile wing specifications and sizes.