Talking about the future development direction of precision testing technology (2)
3. Measurement methods are diversified
(1) Application of multi-sensor fusion technology in the manufacturing field Multi-sensor fusion is a method to solve the measurement information acquisition in the measurement process, which can improve the accuracy of measurement information.
Since multiple sensors acquire information in different ways or from different angles, it is possible to use the information fusion between them to falsify the truth and improve the measurement accuracy.
(2) Building block type, combined measuring method The body-in-white three-dimensional measuring system belongs to this kind of method. It can also be said that it is a flexible coordinate measuring machine with special flexibility. The key lies in the establishment of the system.
(3) Portable measuring instruments such as portable fiber optic interferometers, portable large-scale three-dimensional measuring systems, etc., are often used to solve large-scale measurement problems in the field.
(4) Virtual instrument virtual instrument is the application of virtual reality technology in the field of precision testing, and has been deeply studied in China. One is to virtualize a variety of digital test instruments into a digital intelligent test instrument supported by a computer; the other is to study virtual measurements in virtual manufacturing, such as virtual gauge blocks, virtual coordinate measuring machines, and the like.
(5) Intelligent structure It belongs to structure detection and fault diagnosis. It is an interdisciplinary subject integrating intelligent technology, sensing technology, information technology, bionic technology, material science, etc., making the concept of monitoring transition to online, dynamic and active real-time. Monitoring and control.
4, measuring size continues to develop towards two extremes
The so-called two extremes refer to the large size and small size relative to the current measurement size. The measurement of the usual dimensions has been widely noted, and a variety of test methods have also been developed. In recent years, due to the rapid development and urgent needs of the national economy, many aspects of production and engineering testing requirements exceed the range we can test, such as the measurement of aircraft shape, measurement of key parts of large machinery, elevator guide rails of high-rise buildings. Collimation measurement, on-site calibration of tank trucks, etc. all require large-scale measurement; rapid development of microelectronics technology and biotechnology, exploration of the needs of the microscopic world of materials, continuous improvement of measurement accuracy, and micro and nano testing.
(1) Large-scale measurement methods such as engineering geodetic methods refer to the transplantation and improvement of certain principles and methods of geodesy into mechanical engineering measurements, the generation of new measurement methods, and other methods for measuring large sizes, such as Laser tracking interference 3D size measurement system.
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