6results about How to "Improve measurement performance" patented technology

The application provides a chuck assembly and a measuring device. The chuck assembly comprises a chuck, a plurality of support columns for supporting a wafer are arranged on one side of the chuck facing the wafer, and a plurality of air nozzles capable of forming an air cushion are arranged on the side of the chuck. The plurality of support columns form a plurality of concentric support rings with the rotation center of the chuck as the center. The plurality of air nozzles form a plurality of concentric air nozzle rings with the rotation center as the center. At least one support ring is arranged between any two adjacent air nozzle rings. In the embodiment of the application, the chuck assembly can effectively improve the anti-interference ability, the test stability, and the measurement accuracy.

A portable drilling measuring instrument comprises a receiving rod, a mobile power source is arranged on the outer surface of one side of the receiving rod, the outer surface of the receiving rod and the same side of the mobile power source are connected with a wireless range finder in a magnetic attraction mode, the wireless range finder is provided with a panel and a laser lamp, and the light emitting direction of the laser lamp is parallel to the center line of the receiving rod. A fixed seat is arranged on the outer surface of the other side of the receiving rod, and an inclinometer is arranged on the fixed seat; a lighting camera, an inclinometer and an infrared distance meter are integrated, through modular combination of the measuring end, the measuring rod and the receiving end, measurement of parameters such as the drilling depth and the inclination angle can be completed at a time, real-time visual detection of the rock condition in a hole is synchronously achieved, and compared with a traditional single measuring mode, the working efficiency is improved, the personnel requirement is reduced, and the cost is reduced. The whole set of equipment is light in weight, easy to carry and suitable for rapid measurement of multiple scenes such as tunnels and mines.

The invention relates to the field of force sensors, and discloses an orthogonal bidirectional force sensor of a variable cross-section cantilever structure and a measurement method, and the orthogonal bidirectional force sensor comprises a base, an elastic body, a first strain gauge group for detecting a first direction load component, a second strain gauge group for detecting a second direction load component, and a signal processing unit. The first direction is orthogonal to the second direction; the elastic body comprises a first cantilever and a second cantilever, the root of the first cantilever is fixed to the base, the tail of the first cantilever is perpendicularly connected with the side face of the root of the second cantilever, the tail of the second cantilever is a free end, the first strain gauge set is arranged on the first cantilever, and the second strain gauge set is arranged on the second cantilever. The first strain gauge group and the second strain gauge group are connected with the signal processing unit; the first cantilever adopts a first variable cross-section design. The invention has the advantages that the cross interference is reduced, the optimal balance between the sensitivity and the rigidity is realized, the space compactness and the integration degree are extremely high, and the manufacturing and calibration process is simplified.

The application discloses a gantry machine tool wall parallelism measurement method and system, and the method comprises the following steps: processing a plurality of groups of corresponding measurement surfaces on the two side walls of the gantry machine tool; processing a taper hole on one side of each group of measurement surfaces; adjusting the depth of a half-ball head screw inserted into a hanging pipe and the length of a dial gauge inserted into a connecting rod, so that the total length between the free end of the half-ball head screw and the measurement head of the dial gauge is adapted to the distance between the walls of the gantry machine tool; suspending the measurement system between the two walls of the gantry machine tool; tightly abutting the ball head of the half-ball head screw on the taper hole of the wall measurement surface, repeatedly hitting the corresponding measurement surface on the other side, obtaining the minimum value of the distance between the two measurement surfaces; moving the workshop girder trolley along the wall direction and measuring, obtaining a plurality of minimum value data; obtaining the parallelism data between the walls of the gantry machine tool according to the plurality of minimum value data; and adjusting the corresponding distance between the walls of the gantry machine tool according to the parallelism data until the parallelism requirement is reached.

The utility model discloses a low -voltage motor partial discharge monitoring devices based on TMR sensor, including TMR sensor, motor terminal block, U / V / W three -phase power supply wiring terminal, power line cable, motor winding, the power line cable 9 of U / V / W three -phase power supply wiring terminal connection on motor terminal block 3 is led out from the wiring terminal and first respectively passes through TMR sensor through -hole 10 again, passes through cable incoming wire hole 6 and is accessed motor winding. The external connecting device of TMR sensor includes signal enhancement amplifier, filter, ADC (A / DConverter) analog -to -digital converter, power carrier communication technology device, remote acceptance decoding device, motor partial discharge diagnosis and evaluation device. The integration of TMR sensor greatly promotes the detection sensitivity and anti -interference ability of low -voltage motor partial discharge signal, realizes higher precision monitoring. Secondly, with the aid of advanced signal processing technology and intelligent diagnosis algorithm, not only environmental adaptability is strengthened, also the ability of real -time monitoring is ensured.