261results about How to "Quick measurement" patented technology

The invention relates to a fuel cell test system integrated with an electrochemical alternating current impedance test function, which comprises a fuel cell stack, an air supply unit, a fuel supply unit, a cooling supply unit, a control unit, an acquisition and driving unit and an electrochemical impedance measurement system, the output ends of the air supply unit, the fuel supply unit and the cooling supply unit are connected with the fuel cell stack, the acquisition and driving unit is connected with the fuel supply unit, the control unit is connected with the acquisition and driving unit, and the electrochemical impedance measurement system is connected with the fuel cell stack and the control unit. By adopting the fuel cell test system, method and device integrated with the electrochemical alternating-current impedance test function, the processor and the computer readable storage medium, rapid measurement and impedance calculation of electrochemical impedance in a fuel cell stack test process are realized, the integration level is high, the cost is greatly reduced, the operation is simple, and the test efficiency is high. Errors caused by repeated setting of load parameters are avoided, the measurement efficiency is high, and the measurement precision is high.

The invention discloses an unmanned aerial vehicle ground-to-air conversion-based arch bridge cantilever attitude and line shape real-time monitoring method, which comprises the following steps that: after segments are assembled on the ground, a plurality of prisms which are not positioned on the same straight line and a plurality of targets which are not positioned on the same straight line are arranged on the upper surfaces of the segments; three-dimensional point clouds of the segments are constructed, and coordinates of the three-dimensional point clouds are corrected through the targets; constructing a key point set, constructing a prism coordinate system (XYZ) L0, and converting coordinates of the key point set to the prism coordinate system (XYZ) L0; when the segments are spliced in the air, whether the prisms are subjected to construction disturbance deviation or not is checked, and the spatial positions and postures of chord members and flange holes of the segments are obtained according to the prism disturbance deviation condition. According to the invention, the world coordinates of the chord member pipe orifice center and the flange hole center of the main arch segment can be accurately obtained, and the spatial position and posture of the segment can be effectively reflected.

The invention discloses an inhaul cable based on an optical fiber technology and a cable force measuring method thereof, and the method comprises the steps: obtaining the monitoring data and state data of the inhaul cable, carrying out the temperature compensation of the monitoring data, obtaining a temperature compensation wavelength, correcting the temperature compensation wavelength, obtaining a first correction wavelength, correcting the first correction wavelength, obtaining a second correction wavelength, and obtaining the cable force of the inhaul cable. Determining a first inhaul cable force according to the second correction wavelength, constructing an inhaul cable force measurement model, optimizing the inhaul cable force measurement model according to the cable force error, and inputting monitoring data and state data of a to-be-measured inhaul cable into the optimized inhaul cable force measurement model to obtain a cable force measurement result. The inhaul cable based on the optical fiber technology is installed on a structure to obtain light wave signals, the light signals are processed, the cable force of the inhaul cable is calculated, and the cable force of the inhaul cable is measured in the using process of the inhaul cable based on the optical fiber technology.

The utility model discloses a tool for controlling the elevation of an induction plate of a linear motor, which comprises a cross beam and a measuring assembly, and a first positioning assembly and a second positioning assembly are respectively arranged at two ends of the cross beam, the measuring assembly comprises a sliding seat which is slidably installed on the cross beam and is used for measuring the transverse distance of the measuring points of the induction plate, and a caliper which is installed on the sliding seat and is used for measuring the vertical distance of the measuring points of the induction plate. Through the positioning assemblies arranged on the two sides of the cross beam and the measuring assembly moving on the cross beam, measurement of the transverse distance and the longitudinal distance of the measuring points of the induction plate is achieved, the high-precision requirement for height installation of the induction plate is met, the elevation control precision in the installation process of the induction plate is improved, the construction quality is improved, and the risk of construction rectification is reduced.

The invention relates to an on-line evaluation system and an on-line evaluation method for the cold start-up capability of a fuel cell. The on-line evaluation system comprises a fuel cell stack, an on-line evaluation system and a DCDC, the on-line evaluation system specifically comprises an acquisition unit used for acquiring the voltage of a fuel cell stack and the current of a DCDC input end; the impedance spectrum measurement unit is used for carrying out impedance calculation; the impedance spectrum analysis unit is used for calculating polarization process information of impedance; the excitation signal unit is used for receiving an instruction of the impedance spectrum measurement unit and controlling the amplitude and the frequency of alternating current excitation superposed on the DCDC direct current; the storage unit internally comprises a maximum water capacity database; and the control unit is used for extracting the maximum water capacity database information, obtaining the maximum water capacity of the current state in combination with the calculated polarization process information, and further transmitting a control signal to the fuel cell stack. Compared with the prior art, the polarization process information can be acquired in real time, and the cold start capability of the fuel cell can be acquired and evaluated on line in combination with the maximum water capacity database.

The invention provides a rope tension measuring device, which comprises a base provided with a linear chute and two fixed wheels; the driving wheel is installed in the sliding groove, and the driving wheel can slide along the sliding groove; one end of the sensor is connected with the driving wheel; one end of the adapter arm is connected with the other end of the sensor; the handle is provided with an opening groove, and the opening of the opening groove is rotationally connected with the other end of the adapter arm; one end of the rocker arm is rotationally connected to the base, and the other end of the rocker arm is arranged in the open slot and rotationally connected with the open slot; meanwhile, the invention further provides a rope tension measuring method. A rope is placed between the fixed wheel and the movable wheel, when the handle is rotated, the movable wheel can slide along the sliding groove to extrude the rope until the rope is bent, the sensor measures the longitudinal pressing force of the rope, and the tension of the rope is determined based on the longitudinal pressing force of the rope.

The invention relates to a real-time measurement method for an enthalpy value in an ablation process of a thermal protection material in an electric arc wind tunnel test, is used for a ground test of an electric arc wind tunnel thermal protection system, and belongs to the research field of ground aerodynamic thermal tests of aircrafts. The non-equilibrium temperature (rotation, rotation and electron) and the concentration of atomic nitrogen and atomic oxygen of a stagnation point area of a stagnation point model of the heat-proof material are obtained, online measurement of the local center stagnation point enthalpy value of the heat-proof material is achieved, the whole-process real-time monitoring of the material ablation process is achieved, the enthalpy value simulation range of various types of arc wind tunnels such as tubular, segmented and laminated arc wind tunnels can be covered, and the performance of the heat-proof material is improved. The method has very wide applicability; and rapid and long-time measurement of the whole ablation process of the heat-proof material can be realized, the response frequency can be up to 100Hz, and the measurement period is greater than or equal to 1h.

A method for high-efficiency combined machining of an aspheric optical element comprises the steps that a tool clamp is manufactured according to the shape of the optical element to be machined, the lower surface of an optical element blank is ground and polished, and the optical element blank is fixed to the tool clamp; performing aspheric surface forming processing on the upper surface of the optical element blank through rough grinding and accurate grinding to obtain an aspheric surface sample piece; measuring the surface shape data of the aspheric sample piece by using a contourgraph; the surface shape data are imported into an air bag polishing machine tool, an NC code for compensation machining is obtained through calculation, a tool clamp and the aspheric surface sample piece are fixed to a transition clamp of the polishing machine tool together, and rough polishing and fine polishing are conducted on the upper surface of the aspheric surface sample piece through different air bag polishing heads; and after machining is completed, measuring the surface shape data of the aspheric surface sample piece by adopting a contourgraph, soaking the aspheric surface sample piece and the tool clamp in an acetone solution after the aspheric surface sample piece is qualified, and taking out the sample piece. The process is scientific and reasonable, the surface shape of the element can be rapidly measured, the clamping error is reduced, the machining quality and the machining efficiency are improved, and the production cost is reduced.

The invention provides a flexible high-energy laser sensing film sensor. The flexible high-energy laser sensing film sensor comprises a sensing film and a laser high-reflection film layer on the surface of the sensing film. The sensing film is composed of a flexible substrate, an upper surface transition layer, a lower surface transition layer, an upper surface thermistor layer, a lower surface thermistor layer, an upper surface lead layer, a lower surface lead layer, an upper surface protection layer and a lower surface protection layer. The thin film type double-sided resistor array is used for monitoring the laser irradiation transient thermal effect in real time, the laser detection threshold value is increased in combination with the laser high-reflection film layer, and rapid and accurate measurement of laser irradiation parameters such as laser power density, light spot size and irradiation position can be achieved; the device solves the problem that the existing devices such as a laser power meter and a laser spot analyzer are limited in light sensing diameter and are difficult to be suitable for large-spot-size laser parameter measurement and laser sensing alarm, and has the advantages of flexibility, large area, simple structure, low cost and the like.

The invention relates to an efficient and accurate packaging box size detection mechanism which comprises a bearing and positioning mechanism and a detection mechanism. The bearing and positioning mechanism comprises a bottom plate, and two bearing plates which are distributed left and right are mounted on the bottom plate; the bearing plate is provided with two bearing areas which are distributed front and back, and the bearing plate is further provided with a positioning assembly; the positioning assembly comprises a front-back positioning assembly and a left-right positioning assembly; the positioning assembly is provided with two first push blocks and two second push blocks and is used for pushing the packaging box to the middle position of the bearing area; the detection mechanism comprises a first translation mechanism and a detection assembly; the detection assembly comprises two detection units; the first translation mechanism is used for driving the detection assembly to move, so that the two detection units are respectively located right above the bearing areas on the front sides of the two bearing plates or are respectively located right above the bearing areas on the rear sides of the two bearing plates. According to the efficient and accurate packaging box size detection mechanism, rapid and accurate measurement of the size of the packaging box can be realized, and the detection efficiency and accuracy are improved.

The invention provides a harmonious locomotive axle box body pull rod seat measuring device, which relates to the technical field of locomotive framework detection and comprises an ejector rod positioning mechanism, a rotatable pneumatic three-jaw chuck, a laser limiting distance measuring module and a stepping lead screw module which are arranged on a bottom plate. A linear guide rail is mounted at the bottom of the ejector rod positioning mechanism, so that the ejector rod positioning mechanism linearly moves in the Y-axis direction, and the ejector rod positioning mechanism is perpendicular to the X-axis where the stepping lead screw module moves, so that the rotatable pneumatic three-jaw chuck can be accurately positioned to the center of an inner hole of the axle box; a thrust ball bearing is mounted at the bottom of the rotatable pneumatic three-jaw chuck, so that free rotation of the pneumatic three-jaw chuck is guaranteed; the laser limiting distance measuring module comprises a measuring module and an infrared limiting module. The axle box pull rod seat dimension measuring device can accurately and efficiently measure the dimension of the axle box pull rod seat.

The embodiment of the invention discloses a glass transition temperature testing method, device and equipment, a medium and a program product. The method comprises the following steps: carrying out a near infrared spectrum test on a to-be-tested object in a target environment to obtain a near infrared spectrum signal of the to-be-tested object; inputting the near infrared spectrum signal of the object to be measured into a pre-trained glass transition temperature measurement model; and determining the measured glass-transition temperature corresponding to the near infrared spectrum signal of the object to be measured according to the corresponding relation between the near infrared spectrum signal and the glass-transition temperature through the trained glass-transition temperature model. According to the embodiment of the invention, rapid and accurate determination of the glass transition temperature can be realized in an industrial production field.

The invention discloses a microwave dielectric constant measurement method, system and device and a storage medium, and relates to the field of measurement. In the method, a to-be-tested material is placed between a transmitting antenna and a receiving antenna, an incident angle is adjusted to a preset value, and a signal source is arranged to transmit a first electromagnetic wave signal and receive a second electromagnetic wave signal; calculating an amplitude ratio of the first electromagnetic wave signal to the second electromagnetic wave signal, and calculating a phase difference between the first electromagnetic wave signal and the second electromagnetic wave signal; constructing a waveguide transmission model according to the to-be-measured material, and calculating the characteristic impedance and the propagation constant of a transmission line of the waveguide transmission model according to the size and the working frequency of a waveguide in the waveguide transmission model and the thickness of the to-be-measured material; and constructing an equation set according to the amplitude ratio, the phase difference, the characteristic impedance and the propagation constant, and solving to obtain the microwave dielectric constant. By implementing the technical scheme provided by the invention, the dielectric constant can be accurately measured.

The utility model relates to the technical field of measuring tools, and discloses a pipeline inner diameter measuring tool which comprises a main ruler, one end of the main ruler is provided with a depth gauge, the bottom of the other end of the main ruler is provided with an outer diameter measuring claw, and the top of the other end of the main ruler is fixedly connected with an inner diameter measuring fixing claw. According to the utility model, the measurement digital display is arranged, the circuit board is arranged inside the shell of the measurement digital display, the circuit board is provided with the two groups of moving grids, the moving grids and the fixed grids move relatively, and the capacitance between the moving grids and the fixed grids changes along with the relative displacement according to a certain rule. Under the action of driving alternating voltage, an alternating voltage signal is output on the circuit board, and the phase of the alternating voltage signal is a function of mechanical displacement x and is an approximate linear function under certain precision, so that accurate length measurement is realized in the phase modulation and demodulation process, readings are displayed on the display screen, and the effect of conveniently, quickly and accurately measuring numerical values is achieved.

According to the device and method for measuring the apparent heat conductivity coefficient of the powder at the low temperature, the G-M refrigerating machine is adopted for providing the cold boundary temperature, and compared with a traditional method for providing the cold boundary temperature through low-temperature liquid, the device and method for measuring the apparent heat conductivity coefficient of the powder at the low temperature have the advantage that measurement accuracy is improved. According to the invention, a large amount of low-temperature liquid can be saved, the experiment time can be greatly shortened, a lower cold boundary temperature can be reached, and the cold boundary temperature can be as low as 4.2 K, so that the measurement of a lower temperature can be realized. Moreover, a heater is arranged for the second-stage cold head, the second-stage cold head is heated when needed, the cold boundary temperature can be adjusted, and therefore powder apparent heat conductivity coefficient measurement under the wide temperature zone (4.2-400 K) can be achieved. The device can realize the measurement of a liquid hydrogen temperature zone and a wide temperature zone, the measurement is accurate and rapid, and the cost is saved.

The invention relates to the technical field of flow velocity detection, and discloses a flow velocity meter detection device, which comprises a base, a reservoir fixedly mounted on the upper surface of the base, a first water tank fixedly mounted on the upper surface of the base, a second water tank fixedly mounted on the upper surface of the base, and a first water pipe arranged in an inner cavity of the reservoir, according to the invention, the filtering assembly can adopt a simulation scene to detect the flow velocity of water in different water areas, can filter impurities in the water, and can rapidly adjust the height difference of the water level through the partition plate assembly, so that the device is suitable for simulating various scenes, avoids the interference of the external environment on the flow velocity of water flow, enables the detected data to be more accurate, and improves the detection precision. The height of the water level can be rapidly measured through the water level assembly, an alarm can be given out in time when the height of the water level changes, measurement personnel are reminded to conduct correction, and errors of detection data are avoided.

The utility model discloses an oral implant immediate denture measurer which comprises an immediate denture measuring fixed ruler and an immediate denture measuring casing, the immediate denture measuring fixed ruler is installed and connected on the left side of the upper end of the immediate denture measuring casing, and an elastic abutting grab handle is arranged on the left side of the lower end of the immediate denture measuring casing. The right end of the elastic contact grab handle is provided with an immediate denture measuring movable ruler on the immediate denture measuring machine shell, and the contact part of the immediate denture measuring movable ruler is provided with a digital display dial indicator body on the immediate denture measuring machine shell; an oral implant immediate denture body is clamped between the immediate denture measuring fixed ruler and the immediate denture measuring movable ruler. The immediate false tooth measurer for oral implantation disclosed by the utility model has the technical effects that the immediate false tooth measurer can be quickly clamped for measurement, and measurement data personnel can visually check the immediate false tooth measurer.

The utility model discloses an automobile sunroof visor deflection test tool, which relates to the technical field of automobile sunroof visor deflection test and comprises a base, a test unit, a fixing unit and an adjusting unit. A test unit is mounted on the upper side of the base; the testing unit comprises hydraulic machines, a fixed mounting plate, weight sensors and an arc-shaped plate, the two hydraulic machines are fixedly connected to the front side and the rear side of the upper end of the base, the fixed mounting plate is fixedly connected to the upper ends of the hydraulic machines, and the two weight sensors are fixedly connected to the front side and the rear side of the upper end of the fixed mounting plate; the upper end of the weight sensor is fixedly connected with an arc-shaped plate; the fixing unit is mounted on the base; the adjusting unit is installed on the fixing unit, and the deflection testing tool for the automobile skylight sun shield can quickly fix the device, and can quickly measure the device and record data.

This invention discloses a method for producing crop cultivation substrate using sugarcane filter mud and sugarcane pith as main raw materials, comprising the following steps: (1) dissolving and diluting 4,5-dihydro-4,5-dioxo-1H-pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylic acid in water to obtain a solution; (2) mixing sugarcane slurry, sugarcane pith, the 4,5-dihydro-4,5-dioxo-1H-pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylic acid solution, fermentation agent, and improver, adjusting the moisture content, and then composting and fermenting. The compost is turned over every few days and continuously composted and fermented for several days to obtain the crop cultivation substrate. The crop cultivation substrate produced by this invention is of excellent quality, allowing direct planting of plants without root burn. Therefore, this invention, using sugarcane filter mud and sugarcane pith as main raw materials to prepare and produce crop cultivation substrate, can effectively solve the problem of comprehensive utilization of sugarcane filter mud and improve product sales.

The utility model relates to a device for rapidly detecting the position offset and verticality of a shear wall template, which comprises an abutting piece I, an abutting piece II, a template verticality measuring device and a length adjusting device, the abutting piece I is positioned below the abutting piece II, the abutting piece I and the abutting piece II are connected through the length adjusting device, and the template verticality measuring device is positioned below the abutting piece II. The first abutting piece can slide in the horizontal direction relative to the second abutting piece, and the template perpendicularity measuring device is used for detecting the displacement amount of the second abutting piece relative to the first abutting piece. At the beginning, the extending length value of the second abutting piece is the same as the length value of the first abutting piece, the first abutting piece and the second abutting piece abut against the formwork, the perpendicularity of the formwork can be obtained according to the detection numerical value of the formwork perpendicularity measuring device, and the formwork perpendicularity measuring device is simple and easy to operate, can be installed on site at any time and can be repeatedly used, and especially during flow construction, the formwork perpendicularity measuring device can be used for measuring the perpendicularity of the formwork. The measure is time-saving and material-saving, the working efficiency is improved, the perpendicularity can be quickly measured, the project is ensured to be completed on time, and the cost is saved.

The utility model discloses a quartzite plate efficient edge trimmer which comprises a first operation table, a second operation table is arranged on one side of the first operation table, a first fixing frame is arranged above the first operation table and the second operation table, an electric push rod is arranged below the first fixing frame, a telescopic arm is arranged below the electric push rod, and the telescopic arm is connected with the second operation table. A servo motor is arranged in the operation table, one end of an output shaft of the servo motor is connected with a screw through a coupler, and a sliding rod is correspondingly arranged on one side of the screw. According to the efficient edge trimmer for the quartz stone plates, a limiting sliding structure is formed by a second fixing part and a first operation table through a screw, a sliding rod and a movable block under the action of a servo motor, and a rotating structure is formed by a storage plate and a second fixing frame through an output shaft and a ball under the action of a motor; therefore, quartz stone plates can be automatically driven to be fed and discharged through the slidable storage plate assembly, and sweeps generated by edge cutting can be treated through a scraper on the second fixing frame.

The utility model provides an anchor cable drilling angle measuring device which comprises three measuring rods which are arranged side by side in parallel and are adjustable in length, a locking mechanism which is arranged on the measuring rods and is used for fixing the length of the measuring rods, and a plurality of positioning pieces which are arranged along the length direction of the measuring rods, the adjusting mechanism is connected to the end portion of the measuring rod and used for adjusting the diameter of the positioning piece, the protractor is arranged at the end portion of the adjusting mechanism in the axis direction of the measuring rod, and the plumb bob assembly is connected with the center point of the protractor. A stable system is formed among the measuring rod, the positioning piece and the drill hole, it can be ensured that the measuring device and the drill hole are in a coaxial state, measurement errors caused by shaking or deviation of the device are effectively prevented, the accuracy and reliability of measurement are improved, the protractor is used in cooperation with the plumb bob assembly, and the measuring accuracy and reliability are improved. The angle measurement is more visual and accurate, the operation is simple, and the measurement working efficiency is improved.

A measuring tool comprises a measuring point A, a measuring point B and a measuring point C. The three points cooperate to measure the horizontal or inclined angle of the unmanned aerial vehicle and adjust the height of the measuring point A, so that the measurement of the gravity center position at different inclined angles can be realized, and based on the numerical values, the measurement accuracy of the unmanned aerial vehicle is improved. The inclination angle sensor is installed on the measurement tool and used for measuring the inclination angle of the unmanned aerial vehicle and providing inclination angle data for calculation of the gravity center position of the unmanned aerial vehicle, and then the gravity center measurement result of the unmanned aerial vehicle is obtained through subsequent calculation. The inclination angle of the unmanned aerial vehicle can be autonomously controlled, the inclination angle is relatively small, the unmanned aerial vehicle with a large size can be measured, the measurement process is relatively simple, and the three-point suspension measurement method adopts a hoisting measurement mode, so that the hoisting frame can move freely, the influence of lateral force is relatively small, and the measurement result of the gravity center position of the unmanned aerial vehicle is more accurate.

The utility model belongs to adjustable diameter gauge field, concretely relates to an adjustable diameter gauge, including the bottom plate, the right side fixed installation of bottom plate top has the first locating plate, the outside of first locating plate is provided with the pressing plate, the top of bottom plate is provided with the first locating sleeve, the left side of bottom plate top is provided with the table clamp, the left side of bottom plate top is provided with the second locating plate, the outside of second locating plate is provided with the second locating sleeve, the top of second locating plate is provided with the slide plate, the left side of bottom plate top is provided with adjustable guide rail, the right side of second locating plate is provided with fixed guide rail, the left side of bottom plate top is provided with the outer sleeve, the inside of outer sleeve is provided with compression spring, measures through B type side head, observes the reading of dial gauge, and this reading is the deviation of workpiece diameter and standard gauge block size, according to the tolerance requirement, can judge whether the workpiece is qualified quickly, and it is convenient to measure quickly.

The application discloses a method for non-contact testing of quantum efficiency (EQE) and short-circuit current (ISC) of a solar cell, relates to the technical field of photovoltaic device testing, and aims to solve the problems that the existing quantum efficiency and short-circuit current measurement must contact electrodes, is slow and cannot cover new gateless or process pieces; a non-contact testing method of "multi-wavelength LED excitation + local shielding + carrier lateral diffusion" is provided; the method blocks the excitation light by using a shielding filter, and only transmits the electroluminescence signal of the shielding area; the EL power of each wavelength is extracted through phase-locked amplification and deep learning denoising, the continuous EQE curve is calculated by using the calibrated incident photon flux ratio, and the ISC is obtained by convolution of the AM1.5 spectrum.

Disclosed in the present application is a measurement and positioning system based on machine vision and laser triangulation, which includes a machine vision system, a laser ranging system, and a standard positioning target configured to be installed on a positioned workpiece, where the laser ranging system is configured to project laser light onto the standard positioning target to perform a three-dimensional height measurement, and the machine vision system is configured to capture and image a positioning target and a laser image projected on the standard positioning target and to measure a two-dimensional coordinate position. The measurement system of the present application can realize a rapid three-dimensional measurement and precise positioning of a spatial position of the positioned object by means of the standard positioning target installed on the positioned object.

The present invention provides a method and system for obtaining the vertical distribution of marine suspended particulate matter concentration, matching the TSM concentration data with the in-situ measurement data of various bio-optical parameters at the same depth, and then respectively performing correlation analysis between the TSM concentration and the various bio-optical parameters, setting the determination coefficient threshold to screen the bio-optical parameters highly correlated with the TSM concentration, determining the optimal bio-optical parameters by stepwise regression, obtaining the TSM concentration fitting relationship expressed by the optimal bio-optical parameters, and calculating the corresponding TSM concentration vertical distribution data using the in-situ measurement data of the bio-optical parameters. The present invention comprehensively considers a variety of bio-optical parameters and has a reliable theoretical basis. At the same time, the on-site in-situ measurement instrument can quickly measure high-resolution vertical distribution data, so that the resolution of the obtained TSM concentration vertical distribution data is greatly improved, which helps to more objectively and accurately reflect the distribution change characteristics of the TSM vertical distribution.

The utility model discloses a telescopic combined prism, and relates to the field of prisms special for surveying and mapping total stations. The device comprises an inserting rod, the top end of the inserting rod is coaxially provided with a circumferential adjusting mechanism, the circumferential adjusting mechanism is coaxially and rotatably provided with a plurality of telescopic pieces, and one end, far away from the inserting rod, of each telescopic piece is provided with a prism adjusting assembly; the prism assembly solves the technical problems that when a total station is used for measurement, a current traditional prism assembly cannot complete measurement due to the fact that sight lines at the positions of the total station and a prism are blocked, and meanwhile, due to the fact that the angle of a single prism is fixed, the measured range of the prism assembly is limited, diversified measurement requirements cannot be met, and the applicability of the single prism is reduced.

The utility model discloses a lever type inside micrometer, comprising a measuring felt which is adhered to the front end of a front measuring rod and is used as a measuring surface; the tail part of the front measuring rod is provided with a hollow area which is matched with the clamping hook assembly to be connected with the front end of the rear shaft rod; the rear end of the rear shaft rod is movably connected with the lever handle; the lever handle drives the rear shaft rod to move back and forth; the rear shaft sleeve sleeves the tail part of the rear shaft rod; the spring is assembled on the outer side of the rear shaft sleeve; when the lever handle drives the rear shaft rod to move backwards, the shaft sleeve is driven to transmit power to the rear shaft sleeve, then the spring is compressed, when the lever handle is loosened, the spring rebounds, and the rear shaft rod moves forwards. In a conventional state, the handle is in an open state, the front measuring rod extends out, and in use, the handle is pressed down, and the front measuring rod retracts. The movement mode is matched with a three-jaw accessory to realize opening and closing of the jaws, so that the requirement of quickly measuring the inner diameter is met, and meanwhile, the measurement stability can be improved by holding the large-area handle.