30results about How to "Meet measurement needs" patented technology

The invention discloses an intermediate-frequency surface shape white light interference splicing measurement method based on polynomial filtering. The method comprises the following steps: carrying out white light interference splicing measurement on an X-ray plane mirror to obtain a group of interference measurement surface shape results with overlapped adjacent sub-aperture space positions; fitting the surface shape result of each sub-aperture by using a Legendre polynomial to obtain a polynomial coefficient under a preset order; fitting according to a polynomial coefficient to generate a fitting surface shape of a corresponding order, and subtracting the fitting surface shapes of all orders from the measurement result to obtain a group of surface shape results subjected to Legendre polynomial filtering; and splicing the filtered shape results according to a least square algorithm to obtain a final measurement result. The method aims at meeting the splicing measurement of sub-nanometer PV precision required by the intermediate-frequency surface shape error detection of the X-ray plane mirror, the least square optimization splicing method is used, the method is not limited by the low-frequency characteristic of the measurement error of the white light interferometer, and the precision and flexibility of the splicing measurement are improved.

The utility model provides a kind of wheel riser area deformation measurement equipment, belong to wheel processing technical field, including workbench, and the positioning part for positioning wheel is respectively provided with detection mechanism on workbench;Detection mechanism includes support column, rotating component, translation component and detection component, support column is vertically fixed in the upper end surface of workbench, rotating component is set to the top of support column, translation component is set to rotating component, detection component is installed on translation component;Positioning part includes positioning column, positioning column is vertically set to the upper end surface of workbench and located in the side of support column, positioning column is positioned in the below of detection component with the spoke surface of wheel upwards for wheel.This wheel riser area deformation measurement equipment provided by the utility model fundamentally solves the problem of poor adaptability of existing equipment, so that the equipment can meet the measurement needs of various specifications of wheel, with wide versatility and high flexibility.

The application provides a VISA library running method and device based on an ARM embedded platform, and relates to the technical field of testing and measurement, and comprises the following steps: initializing a layered architecture of a VISA library; the layered architecture of the VISA library comprises an application layer, an API interface layer, a core logic layer, a hardware abstraction layer and a driver layer; discovering and establishing a communication session connection with at least one measuring instrument; wherein a session attribute and a preset attribute associated with a data reading operation are included in a session structure body of the communication session; setting at least one preset attribute for the VISA library; sending at least one control command to a target measuring instrument; wherein the target measuring instrument comprises at least one; reading response data for the control command from the target measuring instrument based on the preset attribute and writing the response data into a buffer; and closing the communication session established with the at least one measuring instrument, so as to alleviate the technical problem that the VISA library is difficult to meet the requirements of an embedded application scenario in high performance.

The utility model discloses a fast locking adjustable building measuring scale, and specifically relates to the measuring scale technology field, the fast locking adjustable building measuring scale comprises a first scale body, one side of the first scale body is fixedly provided with a connecting column, the surface of the connecting column is sleeved with a second scale body, two ends of the connecting column are fixedly provided with limiting discs, and one side of the second scale body is provided with a locking mechanism. The locking mechanism comprises an L-shaped fixing block fixedly arranged on one side of the second ruler body, a sliding groove is formed in the L-shaped fixing block, a cross-shaped sliding block is arranged in the sliding groove in a sliding mode, a fixing plate is fixedly arranged at the bottom of the cross-shaped sliding block, and a limiting rod is fixedly arranged in the fixing plate. According to the utility model, the angle between the first ruler body and the second ruler body can be flexibly adjusted to adapt to different measurement scenes, unlocking and locking can be rapidly realized, the angle stability during measurement is ensured, and the practicability and reliability of the measuring ruler in the aspect of length adjustment are enhanced.

The utility model relates to municipal works pipe jacking construction technology field discloses a kind of folding linear pipe jacking line shape measuring devices, including clamping mechanism, folding ruler, adjustable target and the telescopic fixing mechanism for locking the included angle between clamping mechanism and folding ruler;The clamping mechanism is used to clamp the measuring device in the end of pipe wall two sides of construction pipe jacking;Folding ruler one end articulates clamping mechanism;Folding ruler is provided with recess along length direction, and folding ruler is divided into several short rulers, and short ruler is connected with hinge;Laser source and reflector are provided on the adjustable target, and adjustable target is embedded recess to form sliding connection;The telescopic fixing mechanism includes telescopic link and first fixed bolt.The utility model integrates clamping, extension, measurement, target and locking function in one, adapt to the narrow space limit of construction;The short ruler design of folding ruler meets different pipe diameter measurement demand;Telescopic link adjusts included angle, ensures that folding ruler is perpendicular to pipeline axis, reduces inclination error.

The utility model discloses a kind of self-calibration oil water content measuring devices, belong to oil-water mixed fluid measurement field, including flow computer, fluid inlet pipeline, fluid outlet pipeline, electric three-way valve and measuring assembly, the three interfaces of electric three-way valve are respectively communicated with fluid inlet pipeline, fluid outlet pipeline and measuring assembly, the measuring assembly includes respectively with electric three-way valve two interfaces intercommunication measuring tube one and measuring tube two, the measuring tube one outside is wound with electric heat tracing band, the top of measuring tube one and measuring tube two is respectively equipped with insertion rod type oil water content measuring instrument one and insertion rod type oil water content measuring instrument two, the measuring tube one and measuring tube two are communicated by connecting pipe one, one-way valve is equipped on the connecting pipe one, the measuring tube two is communicated with fluid outlet pipeline by connecting pipe two. The utility model has both sampling static measurement and continuous measurement, two kinds of modes can be carried out simultaneously, also can be carried out separately.

The utility model relates to photovoltaic equipment installation technical field discloses an auxiliary measuring tool for photovoltaic installation, including measuring scale, the upper surface of measuring scale is inlayed and is equipped with horizontal bubble disc, the bottom of measuring scale is equipped with three screw thread support legs of triangle distribution, the bottom of screw thread support leg outer surface is connected with internal thread support foot through screw thread adaptation, the middle part of measuring scale upper surface is printed with scale mark along its length direction. This auxiliary measuring tool for photovoltaic installation, through setting up the combination structure of horizontal bubble disc, three screw thread support legs of triangle distribution and internal thread support foot, can quickly adjust the horizontal state of the tool, and horizontal bubble disc can intuitively feedback the inclination, and the triangle distribution of three support legs has stable supporting property, and cooperates the internal thread support foot of screw thread adjustment, can flexibly adapt the installation ground of different flatness, ensures the horizontal accuracy of the measurement datum plane, and provides reliable foundation for subsequent length, angle measurement.

The application discloses a positron annihilation lifetime measurement device and method for thin film sample characterization, which is composed of a positron emitter, a positron detector and a gamma detector; a sample is placed between the positron emitter and the positron detector. The positron emitter contains a radioactive source and is responsible for detecting the positrons entering the sample, and the positron detector is responsible for detecting the positrons penetrating the sample. The gamma detector is responsible for detecting the 0.511 MeV gamma photons generated after the positrons are annihilated. The application can break through the limitation of measuring the sample thickness, is suitable for all types of positron radioactive sources, and sufficiently widens the experimental conditions; meanwhile, the non-contact measurement function can expand the application of the positron annihilation lifetime measurement method in the measurement of special samples and special environments.

The utility model belongs to the technical field of fluid measuring instruments, and discloses a movable lifting type molten aluminum viscosity testing and stirring device which comprises a base, the base is a cuboid frame, a plurality of moving devices are installed at the bottom of the cuboid frame, and a sliding mechanism is installed on the side face of the cuboid frame; the lifting device comprises a supporting cross beam and a plurality of telescopic rods, the two ends of the supporting cross beam are installed above the cuboid frame through the telescopic rods, and a stirring device and a testing device are installed on the supporting cross beam. According to the technical scheme, flexible movement is achieved through the universal wheels, the telescopic rod is arranged to adjust the measuring height, the display screen and the button are integrated to simplify operation, the high-precision torque sensor is adopted to guarantee the measuring precision, and portability, adaptability and accuracy are achieved at the same time.

This utility model discloses a precision measuring device for machining mechanical parts, relating to the field of mechanical parts measurement. The device includes a crossbar with a groove in its middle containing a scale fixedly mounted. An upper fixed head is fixedly mounted on the top of one end of the crossbar, and an inner diameter measuring mechanism for measuring the inner diameter of the mechanical parts is slidably mounted on the side of the upper fixed head. A lower fixed head is fixedly mounted on the bottom of one end of the crossbar, and an outer diameter measuring mechanism for measuring the outer diameter of the mechanical parts is slidably mounted on the side of the lower fixed head. A horizontal plate is fixed to the side of the crossbar. Through the inner and outer diameter measuring mechanisms, this device can simultaneously measure the inner and outer diameters of mechanical parts, meeting various measurement needs. The combination of the horizontal and vertical plates, along with the angle measuring mechanism, allows for the measurement of angles in mechanical parts. This device is suitable for measuring various mechanical parts and can meet the needs of different processing scenarios.

The cuff comprises a first section, a reset part and a second section, the first section comprises a shell and a containing cavity defined by the shell, and an opening communicating the interior and the exterior of the containing cavity is formed in the shell; the reset piece is located in the containing cavity and connected with the shell. At least part of the second section extends into the containing cavity and is connected with the reset part, the second section is configured to pull the reset part to extend to enable the part, extending out of the opening, of the second section to be lengthened when the second section is subjected to external force in the direction away from the reset part, and the reset part is configured to apply reset force close to the reset part to the second section. According to the cuff, the containing cavity is formed in the first section, the reset piece is arranged in the containing cavity, and the reset piece is connected with the first section and the second section, so that when the second section is pulled, the reset piece can be driven to extend, the part, extending out of the opening, of the second section is lengthened, and then the length of the whole cuff is increased; and the measurement requirement of a thick-arm user is met.

The application provides a precision calibration detection instrument, which comprises a test table, a sleeve spindle, a height adjustment assembly in threaded transmission connection with the upper end of the sleeve spindle, and a swing fine adjustment assembly in eccentric lever mode hinged in the sleeve spindle; the swing fine adjustment assembly forms a non-equal force arm lever structure with the pivot as a fulcrum, and converts the linear adjustment displacement of the upper end into the micron-level angular displacement fine adjustment of the test table of the lower end, so that the technical problem that the existing devices mostly adopt direct translation type fine adjustment, the adjustment precision can only reach 0.01mm level, and the sub-micron level precision measurement requirement cannot be met is solved.

The utility model discloses a tool for rapidly and accurately measuring the ovality of a fragmented tower drum flange, which comprises an L-shaped fixed ruler and a slidable measuring ruler assembly, the long edge of the L-shaped fixed ruler is provided with a C-shaped groove structure, the back of the L-shaped fixed ruler extends to form a longitudinal reinforcing rib, the inner side of the C-shaped groove structure is provided with a wear-resistant layer, and the outer side of the L-shaped fixed ruler is provided with a longitudinal reinforcing rib. The slidable measuring scale assembly comprises an L-shaped graduated scale and a guide part embedded into the C-shaped groove structure, the fit clearance between the guide part and the C-shaped groove structure is 0.05-0.15 mm, and the measuring edge of the L-shaped graduated scale is of a fillet structure. The tool has the advantages of being simple in structure, convenient to operate, accurate in measurement, good in stability and the like, and can be widely applied to the tower manufacturing process of the wind power generation industry.

The invention discloses a three-station moving cutter angle synchronous measurement tool, which comprises a moving cutter assembly, and one end of the moving cutter assembly is detachably connected with a pointer; the initial positioning tool is used for clamping the moving cutter assembly and the pointer and enabling the pointer and a moving contact of the moving cutter assembly to be arranged in parallel; the side wall of the three-station arrangement tank body is provided with a ground knife position contact seat and an isolation position contact seat corresponding to different stations, the space between the ground knife position contact seat and the isolation position contact seat corresponding to the three-station arrangement tank body is an air-break isolation position, and the moving knife assembly is connected with the three-station arrangement tank body through a moving contact seat. The moving contact rotates relative to the moving contact seat and can be in contact communication with the ground knife position contact seat and the isolation position contact seat; the auxiliary measuring disc is fixed to the outer side of a flange opening of a moving contact operation shaft of the three-station arrangement tank body, the pointer and the auxiliary measuring disc correspondingly refer to each other and can synchronously feed back the position of the moving contact in the three-station arrangement tank body, the structure is simple, assembling and positioning of the moving cutter assembly can be achieved, and meanwhile rotation angle measurement of the moving cutter assembly is achieved.

The invention provides a method for predicting the unbalance amount of a rotating machine rotor, and relates to the technical field of unbalance amount measurement, and the method comprises the steps: obtaining the measurement data of each stage of rotor part matching surface through precise measurement equipment, carrying out the fitting of the data through a fitting algorithm adaptive to the geometric features of the matching surface, obtaining the morphology parameters and manufacturing errors, and carrying out the prediction of the unbalance amount. According to the method, the assembly pose characterization model and the unbalance prediction model of the multi-stage power turbine rotor are provided, the generalization of the prediction model is enhanced, and unbalance prediction of various types of rotors can be met.

This utility model discloses a device for single-meter and mixed-meter measurement of denitrification flue gas. It includes multiple sets of sampling pipelines installed on the denitrification flue. These pipelines are arranged sequentially along the flue gas flow direction within the flue and are equally spaced. All pipelines are connected to the same sample gas chamber. A fan is installed on the top wall of the sample gas chamber's inner cavity. The sample gas chamber is connected to a connecting pipe that communicates with its inner cavity, and a NOx analyzer is connected through this connecting pipe. This utility model utilizes multiple sets of sampling pipelines to extract flue gas from different locations within the denitrification flue and, in conjunction with the NOx analyzer, achieves multi-point single-meter monitoring, reducing the cost of multi-point NOx concentration measurement. Furthermore, the equally spaced sampling pipelines facilitate the acquisition of NOx concentration variations within the area. The sample gas chamber and fan ensure thorough mixing of multiple flue gas streams, meeting the requirements for mixed-meter measurement.

The utility model provides a kind of laboratory liquid quantitative measurement and canning device, comprising: intercommunication quantitative component and switch component;Wherein, the quantitative component, comprising, hollow cylindrical can body (1), the can body (1) bottom is connected with the quantitative component top;Variable capacity adjusting rod (2) is equipped in the can body (1), for adjusting the hollow cavity volume of the can body (1);The switch component, comprising, shell (8), the shell (8) top is connected with the can body (1) bottom;Switch device is equipped in the shell (8), the hollow cavity of the switch device top is communicated with the can body (1), bottom is worn out the shell (8) bottom, for discharging the liquid inside the hollow cavity, the switch device side is worn out the lateral wall of the shell (8), for transporting liquid to the inside of the hollow cavity.

The invention discloses a digital multimeter display method based on a double-ARM processor platform. Comprising the following steps: receiving a digital display signal and a digital display instruction from an ARM processor in a double-ARM processor platform; driving the digital multimeter to display data based on the digital display signal and the digital display instruction; wherein the main ARM processor controls the simulation conditioning acquisition unit to execute a measurement task based on a remote command; the main ARM processor communicates with the slave ARM processor through an LAN interface, and the main ARM processor is physically isolated from the slave ARM processor; and the slave ARM processor drives the digital multimeter to display data based on the digital display signal and the digital display instruction, and the slave ARM processor is also used for executing a digital task. According to the invention, low power consumption, high integration, flexible division of labor and low cost are realized while the performance is ensured to meet the measurement requirement.

The invention discloses a tightening torque testing device and method for a gear box locking nut, and belongs to the technical field of gear box nuts. The tightening torque testing device comprises a working platform, a supporting shaft vertically arranged at the top end of the working platform, and a dial indicator assembly arranged on one side of the supporting shaft; the supporting shaft comprises a first shaft section arranged at the top end of the working platform and a second shaft section integrally connected to the top of the first shaft section, the outer diameter of the second shaft section is larger than that of the first shaft section, the first shaft section and the second shaft section are in transition through a step face, the periphery of the second shaft section is sleeved with a bearing, and the periphery of the bearing is sleeved with a bearing sleeve. The bottom end of the bearing inner ring abuts against the step face, the end of the second shaft section is provided with a threaded section, the periphery of the threaded section is in threaded connection with a locking nut, the bottom end of the locking nut abuts against the top end of the bearing inner ring, and the dial indicator assembly is connected to the top end of the bearing sleeve. According to the method, the corresponding relation between the axial negative clearance of the bearing and the tightening torque can be accurately reflected, and errors of theoretical calculation are avoided.

This utility model relates to the field of measuring devices and discloses a conveniently stored measuring device for architectural design. It includes a main scale, a secondary scale rotatably connected to the inner wall of the main scale via a rotating rod two, the rotating rod two being fixedly connected to the inner wall of the secondary scale, a retaining plate fixedly connected to the outer wall of the secondary scale, a connecting plate connected to the rear end of the main scale via a hinge, and the rear end of the main scale being connected to the connecting plate via a limiting component. A protractor one is fixedly connected to the top of the connecting plate, a protractor two is slidably connected to the inner wall of protractor one, and a protractor three is slidably connected to the inner wall of protractor two. In this utility model, the secondary scale can be rotated and stored inside the main scale via the rotating rod two, reducing the space occupied in the length direction. The connecting plate is connected to the rear end of the main scale via a hinge and can be flipped for storage when not in use. The main scale and secondary scale can be used together for length measurement, and the protractor one, protractor two, and protractor three can be combined for angle measurement.

The online alpha particle detector of this invention integrates a ZnS(Ag) detector and a PIPS (ion-implanted passivated silicon) detector. Both ZnS(Ag) and PIPS are insensitive to ambient gamma rays, allowing the device to achieve low background and detection limits without additional shielding. ZnS(Ag) is also insensitive to beta rays; with proper threshold setting, the interference of beta rays on ZnS(Ag) is negligible. For PIPS, the energy spectrum of beta rays is concentrated in the low-energy region; interference from beta rays can be eliminated through energy spectrum analysis algorithms or by increasing the lower limit of the energy spectrum threshold. Thus, the influence of beta and gamma rays on the combined detector's measurement of alpha particles is greatly reduced, improving the detection accuracy of alpha particles. The ZnS(Ag) detector is coupled with multiple PMTs, further ensuring detection efficiency. The detection window structure, thanks to its unique design, is easy to replace, and the window materials—aluminum foil, titanium foil, and gold foil—are flexibly adaptable. The detector is resistant to strong acids and alkalis and corrosion, enabling a wider range of applications.

The utility model discloses a measuring device applied to balance machine belongs to tire balance technical field. The utility model discloses a measuring device applied to balance machine includes: measuring claw, base plate, first baffle, second baffle, three guide rods, draw scale and first measurement module, and measuring claw is used for fitting installation in the highest point of the inside edge of the hub of balance machine, and base plate is fixed on balance machine, and first baffle and second baffle are arranged respectively at both ends of base plate, and three guide rods are parallel and are fixed between first baffle and second baffle and are triangular distribution, and draw scale is slidably arranged between three guide rods, and one end of draw scale penetrates first baffle and is connected with measuring claw, and when measuring claw fits inside edge of hub, drives draw scale displacement, and first measurement module is used for detecting draw scale displacement and calculates hub inside diameter value. Through adopting the structure design of three guide rods and being triangular distribution, make draw scale on guide rod sliding more stable, effectively solved the problem of the existing measuring scale and pulled the jam.

The utility model relates to the technical field of electric bicycle line resistance measurement, in particular to an electric bicycle line resistance measurement alarm device, which comprises a loop resistance detection assembly and a line probe assembly. And a circuit probe assembly is arranged outside the loop resistance detection assembly. According to the utility model, through a splicing combination connection mode of the circuit detection pen and the test alligator clip in the circuit probe assembly, a function of combining clamping electrical connection and contact point contact connection of a cable in a circuit is realized, so that measurement requirements of two circuit detection modes of circuit clamping measurement and probe contact point measurement are met; and electric signals detected by the circuit detection pen and the test alligator clip are transmitted to the detector through the meter pen wire, the binding post and the wiring board for signal processing and analysis, and then data detected in real time are displayed outwards through the monitoring screen, so that the display intuition of a detection result is greatly improved.

This invention discloses a high-precision self-stabilizing tunnel construction positioning and marking robot, relating to the field of tunnel construction technology. It includes a crawling robot, a fixing mechanism, a third motor, a conversion mechanism, and a lifting mechanism. The crawling robot has fixing mechanisms rotatably connected to all four sides of its bottom. A third motor is fixedly connected to the top of the front boss of the crawling robot, and the bottom output shaft of the third motor passes through the front boss and is rotatably connected to its interior. A conversion mechanism is fixedly connected to the bottom output shaft of the third motor. A lifting mechanism is fixedly connected to the top right front end of the crawling robot platform. The fixing mechanism, by drilling holes in the tunnel wall and inserting a first drill bit into the holes, fixes the crawling position of the robot, reducing the accumulation of small deviations and preventing the overall trajectory from deviating from the design path.

The invention belongs to the technical field of industrial measurement, and particularly relates to a code band position and speed identification method and system. The method comprises the following steps: constructing and storing a standard coding model adaptive to a current identification program; carrying out continuous light beam scanning sampling on the code band according to a preset sampling period, collecting a light intensity change signal representing the physical structure of the code band, and converting the light intensity change signal into a discretized one-dimensional time sequence photoelectric signal; preprocessing the one-dimensional time sequence photoelectric signal; a continuous sampling frame matching mode with a multistage filtering fault-tolerant mechanism is adopted, the preprocessed one-dimensional time sequence photoelectric signal is compared with a standard coding model, and the absolute position and the accurate position of a current scanning section in a code band are determined; and calculating the running speed of the moving target based on the displacement variation of the matching result of the continuous sampling frames and the sampling period. According to the invention, the problems of insufficient adaptation flexibility, poor stability in a complex environment and weak anti-interference capability of the existing code band detection system can be solved.

The utility model discloses a kind of adjustable magneto-rheological fluid viscosity measuring devices, including water bath, viscosimeter and power supply, the bracket is equipped in water bath, the bracket is equipped with placing cavity, the outer periphery of placing cavity is equipped with coil, the power supply is electrically connected with the coil, the current magnitude of the coil is adjustable, the bearing portion is equipped in the placing groove, the bracket has the flow space around the liquid container when the liquid container is carried by the bearing portion, the flow space is through the bracket up and down, the bottom of the bracket and the pot bottom of water bath have gap. The device of the utility model can control two key variables of temperature and magnetic field simultaneously, accurately measure magneto-rheological fluid viscosity.

This invention belongs to the field of circuit measurement technology and discloses a large-range, low-dropout current measurement circuit, including: a microprocessor, a sampling resistor R0, an output amplifier U7, and multiple parallel shunt circuits. Each shunt circuit includes a sampling resistor, an output amplifier, an automatic shunt adjustment module, and a shunt gate. One end of the sampling resistor R0 is connected to the current input terminal, and the other end is connected to the input terminal of the output amplifier. In each shunt circuit, the two input terminals of the automatic shunt adjustment module are respectively connected to the current input terminal and a comparison voltage, and its output terminal is connected to the control terminal of the shunt gate. One end of the shunt gate is connected to the current input terminal, and the other end is connected to one end of the sampling resistor, the other end of which is grounded. One end of the sampling resistor is connected to the input terminal of the output amplifier. The output terminal of the output amplifier is connected to the microprocessor. This invention can meet the requirements for high-speed, large-range current measurement.

This invention discloses a milling cutter height measurement and adjustment device for a milling machine, comprising a positioning component that detachably engages with the milling surface of an ingot and a reference component that engages with the milling cutter. The reference component includes a positioning section, a transition section, and a measuring section connected sequentially along its length. The bottom surface of the positioning section is parallel to the milling surface of the ingot, and the positioning component is embedded between the positioning section and the milling surface of the ingot. An adjusting component capable of adjusting the distance between the positioning section and the positioning component is detachably provided between the positioning component and the bottom surface of the positioning section. The top surface of the measuring section is a measuring reference surface that can contact and abut against the milling cutter, and the measuring reference surface is parallel to the milling surface of the ingot. This milling cutter height measurement and adjustment device can improve the accuracy of milling cutter height measurement and adjustment, and make milling cutter height adjustment more accurate and efficient.

The application discloses a modular reconfigurable flexible measuring support and a combined system thereof, and relates to the technical field of automobile part processing and measuring. The flexible measuring support comprises a Base frame and a flexible support base. The Base frame is provided with a plurality of mounting holes arranged in an array at a predetermined interval. The flexible support base is detachably mounted on the Base frame and comprises a base, a Z-axis lifting mechanism, an XY-axis displacement platform and a position precision feedback system. The Z-axis lifting mechanism is arranged on the base and is used for driving the sliding support base to lift along the Z-axis direction. The XY-axis displacement platform is arranged on the top of the sliding support base and is used for realizing displacement adjustment in the X-axis and Y-axis directions. The position precision feedback system is used for detecting the lifting position of the sliding support base in real time and feeding back to the control system to realize closed-loop control. The application adopts modular design and can be freely combined and configured, realizes one-to-many measurement, greatly reduces the cost and reduces the storage space occupation.