30results about How to "Convenient length measurement" patented technology

A scanning electron microscope with a length measurement function includes an electron gun for emitting an electron beam, a measurement target region setting unit for setting a measurement region for a pattern formed on a sample, a storing unit for storing the designated measurement region, a beam blanker unit for controlling an irradiation of the electron beam depending on the measurement region, and a control unit for extracting the designated measurement region from the storing unit, interrupting the electron beam with the beam blanker unit in a region other than the measurement region, irradiating the electron beam onto the sample in the measurement region, capturing an image of the measurement region, and measuring the pattern. The measurement region may be a pair of regions having the same areas as each other.

The invention relates to the technical field of chain length measuring devices, in particular to a length measuring device with a protection function for chain production, which comprises an operation table, a measuring structure for measuring the length of a chain is arranged on the operation table, an identification structure for displaying a measuring result is arranged on the operation table, and the identification structure is connected to the measuring structure; a protection plate is vertically arranged on the operation table, and a first driving structure used for driving the measuring structure to tighten the chain is arranged on the protection plate; a height adjusting structure used for adjusting the height of the storage structure is arranged on the operation table, the height adjusting structure is rotationally connected with the storage structure, and a second driving structure used for driving the storage structure to rotate is arranged on the operation table; the first driving structure drives the measuring structure to unfold the chain, and the measuring structure drives the identification structure to visually display data, so that the length measurement of the chain is more convenient and faster.

The invention discloses a textile fabric length measuring device, belonging to the technical field of textile fabrics. Each of them is symmetrically arranged on the bottom plate from left to right, and the measuring grooves communicate with each other. The tape measure is inserted into one side of the measuring groove, and further includes: a guide frame, a second magnet, a sliding block, a clamping block, a winding block assembly, limit assembly, and positioning assembly; the present invention facilitates the measurement of fabrics with a long length, the sliding block drives the fabric to pass through the limit assemblies on both sides, and drives the limit assemblies under the action of the thickness of the fabric The positioning component is driven to move, and the tape measure and the center of the end face of the cloth are overlapped by the positioning component, so as to avoid errors caused by the thickness of the cloth; it solves the problem of the existing cloth measuring device due to the different thickness of the cloth. error will occur.

The invention discloses a laser suspension conductor length measuring assembly which comprises a tripod, a three-axis holder fixed on the tripod and a laser suspension conductor length measuring instrument installed on the three-axis holder. The laser range finder, the battery, the control panel, the power switch and the display screen are installed on the shell, the battery, the power switch and the display screen are connected with the control panel, and the shell comprises a main body part and a side face part arranged on the side face of the main body part. The upper part of the main body part is provided with a laser range finder mounting groove for mounting a laser range finder, the display screen is mounted in front of the side surface part, and the side surface part is provided with a battery groove for mounting a battery and a control panel mounting part for mounting a control panel. According to the invention, length measurement of the suspension conductor is facilitated.

The invention discloses a fast measuring device and a measuring method for the body length of an EMU. The measuring device includes a frame, an inverted V-shaped plate is arranged on one side of the frame, and a base of a servo electric cylinder is installed at the end of the inverted V-shaped plate. The upper end of the frame is hinged with the three-link mechanism, and the output end of the servo electric cylinder is hinged with the three-link mechanism; the end of the three-link mechanism is provided with a pedal-type pressure sensor, and the end of the pedal-type pressure sensor is connected to the pressure plate through a universal joint ball bearing. Hinged, the pressure plate is respectively provided with an inclination sensor and an infrared distance sensor; the measurement method includes installing the measuring device on the columns on both sides of the car body, and attaching the pressure plate to the front and rear end surfaces of the car body. The invention can solve the problem in the prior art that there is no method for accurately measuring the length of the car body of the EMU, and has high detection precision, strong adjustability and fast detection speed.

An intelligent type power cable emergency breakdown van is used for improving the working efficiency when a communication cable is urgently repaired. Tracks are arranged on the left side and the rightside of a vehicle body, a side vehicle plate is slidably mounted between the tracks, and a side vehicle plate driving mechanism which drives the side vehicle plate to move up and down is arranged between the side vehicle plate and the vehicle body; a new cable loading and unloading assembly is arranged on the rear side of the vehicle body and mainly comprises a supporting arm, a supporting plate,a first loading and unloading oil cylinder, a second loading and unloading oil cylinder and a clamping mechanism, the supporting arm is hinged to the supporting plate, the first loading and unloadingoil cylinder is arranged between the supporting plate and the supporting arm, a U-shaped frame is arranged on the top of the supporting arm, a clamping block is mounted at the left end of the U-shaped frame in a hinged mode, the clamping mechanism used for driving the clamping block to swing is arranged between the clamping block and a clamping arm, and a supporting plate fixing mechanism is arranged between a positioning hole of the supporting plate and the vehicle body; and an old cable recovery assembly is arranged on the left side of the vehicle body or / and on the right side of the vehicle body, and a lifting assembly is arranged in the middle of the vehicle body. The intelligent type power cable emergency breakdown van can greatly reduce manual labor of workers.

A length measuring method installs the sample permanent magnet on the sample shaft instead of on the length measuring shaft, and installs the sensor to the place close to the sample shaft instead of the length measuring shaft, which connects with the sample shaft through the teethed gear set, connecting the signal output end of the sensor with the input end of the signal converter of the length measuring electrometer, entering the diameter of the strip like length measuring shaft and the gear drive ratio between the sample shaft through the parameter setup button on the length electrometer panel to the CPU of the length measuring electrometer. It can realize the length measurement to all strips like articles along their transmission direction, with strong applicability, simple operation and improved precision.

Disclosed is a self-adaptive segmentation method based on a crack image subarea gray scale mean value. The method comprises the following steps: 1), analyzing crack image characteristics on the basis of crack image gray scale statistical data of an image histogram; 2), selecting a narrow and long rectangular area as an image analysis ROI area, wherein the narrow and long rectangular area is symmetrical about a prefabricated crack expansion horizontal line and comprises fatigue cracks; 3), dividing the ROI area into two rows of multiple same-dimensioned square area image subareas from a prefabricated crack starting point to a crack right edge position; 4), calculating a grayscale distribution variance for each image subarea, and according to a variance distribution rule, excluding image subareas not including the fatigue cracks; 5), performing histogram calculation on the image subareas comprising the cracks to obtain a histogram two-dimensional array; and 6), performing crack segmentation on each subarea by use of a self-adaptive iteration method based on the crack image subarea gray scale mean value. According to the invention, the crack measuring precision is improved, the application scope is wide, the algorithm complexity is low, the realization is simple, and the operation speed is fast.

The invention belongs to the technical field of length sensing, and provides a single-cylinder telescopic boom length sensing device. A fixing frame is mounted on a boom head of a base boom through amounting frame. A pressing part is connected between the fixing frame and the mounting frame. A rolling wheel which is rolling connection with a movable arm is connected with the fixing frame. The fixing frame comprises a shaft seat. A pressing part is connected with one end of the shaft seat. A fixing plate is arranged at the other end of the shaft seat. The rolling wheel comprises a wheel axle and a wheel body. The wheel body is in key connection with the wheel axle. One end of the wheel axle is rotationally connected to the fixing plate. The other end of the wheel axle is rotationally connected to an L-shaped plate. The L-shaped plate is provided with a fixing mechanism matched with the wheel axle. An encoder matched with the wheel axle is arranged on the fixing plate. The rolling wheelis in rolling connection with the outer wall of the movable arm, linear motion of the movable arm is converted into rotation of the rolling wheel, a rotation signal is converted into an electric signal, a length sensing valve is output, a stay wire and a rotary spring do not need to be used, the application cost is reduced, no vulnerable stay wire device is arranged, and the reliability is improved.