40results about How to "Achieve the purpose of measurement" patented technology

The invention discloses a communication system that realizes link measurement and link measurement method thereof. The link measurement method includes the steps of: configuring a probing message by an access node, parsing the probing message to obtain a piece of single link probing data and report it to a network management back stage or send the probing message to the access node. The access node parses the sent probing message to obtain a piece of double link probing data and report it to a network management back stage; the network management back stage obtains the link state information in real time according to received single link probing data and double link probing data. The measurement method of the invention based on an active measurement technology analyzes inner link quality problem in the signaling message in the system and positions the problem rapidly in the system, which improves problem screening efficiency.

The invention relates to a device and a method suitable for measuring a geometric parameter of a superplastic non-spherical free bulge in a superplastic non-spherical free bulge experiment and also suitable for measuring a shape change geometric parameter of an axisymmetric rotating curved surface. The device comprises a measured bulging part, an annular light source, a video camera, a PC machineand an adjustable holder, wherein the annular light source is coaxial with a lens of the video camera and is positioned between the measured bulging part and the video camera; the annular light sourceand the video camera are arranged on the adjustable holder; and the PC machine controls the video camera to continuously acquire images of the measured bulging part and processes the acquired imagesto measure and calculate the geometric parameter of the measured bulging part. Compared with other measuring methods, the measuring method takes the measured bulging part images as information carriers and extract available information by analyzing and processing the measured bulging part images, thereby achieving the purpose of measurement; in addition, the invention has the advantages of non-contact, abundant obtained information, high measuring precision and measuring speed and the like; and the invention can realize on-line real-time measurement.

The invention, belonging to the technical field of temperature measurement, discloses a device for detecting a panel thermometer of a continuous annealing furnace and a method thereof. The invention primarily comprises that: pore passages communicated with each other are arranged at the bottom of the annealing furnace and in a refractory layer of the furnace bottom, an outer casing is mounted on the inner wall of the pore passages, a thermocouple and a display device are arranged; an inner protective casing is mounted in the outer casing, high-temperature refractory fibers are filled between the inner casing and outer protective casing, the temperature-measuring thermocouple is arranged in the inner protective casing, the parts of the inner protective casing, the outer casing and the temperature-measuring thermocouple stretching out of the furnace are totally arranged in the hermetic closure of a stretchable corrugated pipe. When the radiant panel thermometer is checked, a hand wheel at the bottom of a connecting rod is rotated to move the connecting rod upwards, so as to push the inner protective casing, the outer casing and the temperature-measuring thermocouple into the position near band steels in the furnace chamber, thus realizing the measurement of the panel temperature; according to the temperature of the band steels measured by the temperature-measuring thermocouple, the radiant panel thermometer is checked in combination with the panel temperature shown by the radiant panel thermometer to obtain correct radiation coefficient. The invention is accurate in measurement, simple in structure and convenient in operation and use.

The invention discloses a non-contact space curve precision measurement method and device, wherein the method includes: determining a measurement point; obtaining the distance d from the measurement point to the starting point i of the line to be measured _i and the angle information of the i-th point; the initial value of i here is 1; obtain the distance d from the measurement point to the next point i+1 of the line to be measured _i+1 and the i+1th point angle information, the point should be very close to the previous point; according to the difference between the i+1th point angle information and the i+1th point angle information to determine the relative rotation angle α _i , by the formula Calculate the approximate length from point i to point i+1; repeat the above process, accumulate i while continuously measuring, until the end point of the line to be measured, n is equal to the final value of i continuously accumulated, and then pass l=l ₁ +l ₂ +…+l _n Determine the length of the line to be tested. Through the embodiment of the invention, complete non-contact measurement can be achieved, the measurement can be performed at a place far from the measurement object, and the purpose of measuring the curved surface can be achieved.

The invention relates to a laser range finder. The laser range finder comprises an emission optical system. The emission optical system comprises a collimator. An emission light path on which the collimator is arranged is provided with a first refraction plate used for generating an inner light path so as to realize sampling, and an inner light path optical fiber used for receiving the inner light path. An inner and outer light path switching device is arranged between the emission light path and the inner light path. The inner and outer light path switching device blocks the emission light path and conducts the inner light path, so that the purpose of inner light path measuring is achieved; when the inner light path is blocked, the emission light path is conducted, so that the purpose of outer light path measuring is realized. By adopting the structure, the negative influences of axial endplay of an inner light path motor shaft to measuring precision in the prior art are avoided.

The invention belongs to the field of photometric measurement and relates to a cylinder face photometric measurement device used for measuring the distribution rule of the emergence light intensity and the emergence light angle of a light source or a refraction and reflection material. Emergence light in all directions in space is collected through the inner wall of a cylinder face light screen, and the emergence light intensity reflects the irradiated brightness of the cylinder face light screen. The brightness irradiated by the emergence light of the inner wall of the cylinder face light screen is measured through a fisheye camera, the angle corresponding to the emergence light is obtained through image coordinates according to the fisheye camera coordinate conversion relation, and therefore the distribution rule of emergence light intensity and the emergence light angle is established. Compared with a traditional method, emergence light intensity data within the emergence light angle in the 180-degree semispherical range can be measured at the same time, the data volume obtained through one-time measurement is large, efficiency is high, and the interference from the environment is low. Meanwhile, the measurement device has the advantages of being simple and easy to machine and low in cost.

The invention discloses a power semiconductor device for testing a gate pole current. The device comprises a power semiconductor chip and a tube shell. The power semiconductor chip comprises a plurality of first insulating layers and a plurality of sub gate pole annular electrodes; the first insulating layers divide a gate pole common metal region of the power semiconductor chip into a plurality of sub gate pole common metal regions, and the plurality of sub gate pole common metal regions are connected with the plurality of sub gate pole annular electrodes in a one-to-one correspondence manner; the tube shell comprises a plurality of sub gate pole contact rings and a plurality of sub-insulating seat inner metal rings, and the sub gate pole contact rings and the sub insulating seat inner metal rings are arranged with the plurality of sub gate pole annular electrodes in a one-to-one correspondence manner; and a plurality of square grooves are formed in a cathode copper block on the outerside of a tube shell gate pole groove, and gate pole leading-out strips are arranged in the square grooves so as to lead out gate pole currents on the corresponding sub gate pole annular electrodes respectively. The power semiconductor device can effectively lead out gate pole currents of different cathode strip-shaped areas in the power semiconductor chip so as to achieve a purpose of measurement.

The invention relates to a detector employing a plastic scintillator to measure alpha and beta rays, belongs to the field of a nuclear radiation detector and solves problems of low alpha and beta surface pollution efficiency and small measurement area existing in a plastic scintillator. The detector comprises a detector top cover, an aviation plug, a detector casing, a light guide and plastic flash, a photomultiplier tube and a photomultiplier tube socket, wherein the light guide and plastic flash is fixed at the center position of a detector casing chamber, the photomultiplier tube socket anda multi-core signal wire are welded on a signal processing circuit board, a bottom end of the photomultiplier tube is plugged on the photomultiplier tube socket, a top end of the photomultiplier tubeis glued at the side surface of the light guide and plastic flash through optical adhesive, the signal processing circuit board is arranged on an inner bottom surface of the detector casing, a positioning column is screwed on the detector casing, a foot pad is fixed at a top portion of the positioning column, a film frame is arranged on an incident surface at a top portion of the detector casing,and the detector top cover is arranged on the film frame. The detector is advantaged in that surface pollution efficiency is high, and the measurement area is large.

The invention discloses current measurement equipment and a current measurement system, and relates to the technical field of power equipment. The current measurement equipment is used for measuring ahigh-frequency current superimposed in a power frequency current of power equipment. The power equipment comprises a current-carrying conductor. The current measurement equipment comprises a first Rogowski coil, a second Rogowski coil and a resistor assembly connected between the first Rogowski coil and the second Rogowski coil in series. The first Rogowski coil comprises a high-frequency magnetic core, and the second Rogowski coil comprises a low-frequency magnetic core. When the current-carrying conductor is sleeved with the first Rogowski coil and the second Rogowski coil, a first inducedvoltage induced in the first Rogowski coil by the power frequency current in the current-carrying conductor and a second induced voltage induced in the second Rogowski coil by the power frequency current in the current-carrying conductor are equal in size, and the first induced voltage and the second induced voltage are opposite in direction. According to the current measurement equipment and thecurrent measurement system, the current measurement flexibility of the power equipment can be improved.

The invention relates to the technical field of speed detecting of a tracked vehicle, in particular to a track speed detecting device of the tracked vehicle. The track speed detecting device comprises encoder mounting brackets, encoder protecting hoods, connecting bolts, encoder connectors, encoders and limiting screws, wherein each encoder protecting hood is welded to the bottom of the corresponding encoder mounting bracket; each connecting bolt is used for being connected with a tracked vehicle rotating shaft; each encoder connector is welded to a nut of the corresponding connecting bolt; each encoder mounting hole is formed in the center of corresponding encoder connector; each limiting hole is formed in the outer side of the corresponding encoder connector; a circular hole is formed in the center of the side edge of each encoder protecting hood; three fixing threaded holes are formed in the periphery of each circular hole; after penetrating through the corresponding circular hole, a center rotating shaft of each encoder is inserted in the corresponding encoder mounting hole, and is fixed from the corresponding limiting hole through the corresponding limiting screw; and a housing of each encoder is fixed from the corresponding fixing threaded hole through the corresponding fixing screw. According to the track speed detecting device disclosed by the invention, the mechanical connection of the encoders and the tracked vehicle rotating shaft is adopted, so that the track speed is accurately detected.

The invention relates to the field of bending machines, in particular to a metal pipe bending machine. The metal pipe bending machine comprises a bending machine main body, a fixing mechanism is installed on one side of the front face of the bending machine main body, a recovering mechanism and a winding mechanism are installed on the other side of the front face of the bending machine main body,the recovering mechanism is located above the winding mechanism and is in transmission connection with the winding mechanism, a power line is fixedly connected to the other side of the front face of the bending machine main body, the middle of the power line is wound on the winding mechanism, one end of the power line installation plug is clamped on the fixing mechanism, a supporting block is fixedly connected to one side of the upper end of the bending machine main body, and a first containing groove is formed in the end of the supporting block. According to the bending machine main body, thebending machine main body is provided with the winding mechanism and the fixing mechanism, during use, the power line can be wound on a winding disc of the winding mechanism, a bottom plate and a pressing plate of the fixing mechanism are used for clamping the power line, the redundant part of the power line is fixed to the bending machine main body, and the situation that the power line is cut by sharp objects on the ground when dragged on the ground is avoided.

The invention discloses an electric appliance interference resistant power line transmission time delay measurement method and device and a storage medium, and belongs to the field of time delay measurement, and the method comprises the following steps: S1, changing the resistance value of a resistor at a receiving end, obtaining n groups of different input end voltage-current ratios, selecting an initial value, and setting a precision requirement; s2, calculating a mean square error matrix for time delay estimation according to the initial value, judging whether the modulus of the mean square error matrix is smaller than the set precision or not, if the modulus of the mean square error matrix is smaller than the set precision, obtaining an optimal solution and carrying out a step S4, and otherwise, carrying out a step S3; s3, determining a linear search direction according to the mean square error matrix, updating the initial value, and repeating the step S2 by using the updated initial value; and S4, obtaining an output time delay value according to parameters extracted from the optimal solution. On the premise of not influencing the work of a power grid, the online end-to-end transmission time delay measurement which resists the interference of electric appliances and is high in precision, small in size and low in cost can be realized.

The invention discloses packaging piece production equipment capable of adjusting the size self. The packaging piece production equipment comprises a shearing device and a height measuring cavity arranged in the shearing device; the height measuring cavity is internally provided with a height measuring mechanism; and the height measuring mechanism comprises a measuring block and an unloading connecting block, can automatically detect the height of a product to be detected and feeds a height value of the product through the unloading connecting block. The device is simple in mechanism and simple and convenient to use, can be used for processing a packaging piece by utilizing the height of the product needing to be packaged, can prevent the size of the packaging piece from being too large ortoo small, saves materials and can achieve the maximum benefit. By adopting the packaging piece production equipment, through one sensing block, the purpose of measurement is achieved by contact between the sensing block and the product, and the height of the product is recorded, so that batch production and processing can be realized.