Method for realizing mass quantum standard

Abstract

The invention discloses a method for realizing mass quantum standard, which aims to solve the problem that because the mass unit kilogram is widely used in scientific research, production, trade even daily life, to establish a mass quantum standard has become the focus of current scientific research on metrology, world-famous institutes of metrology such as British Institute of Metrology, American Institute of Metrology, French Institute of Metrology, Swiss Institute of Metrology, International Bureau of Weights and Measures, and the like have launched related researches, but due to great technical difficulties, little progress has been made for years. The applicant of the invention designs a new method which exports the mass value of a balance weight by using the acting force between an excitation coil and a movable coil hung on a balance. Due to the static measurement process, the measurement carried out in the process of moving the coil is not required; therefore, the method can eliminate the maximum error source in the foreign scheme, and greatly improve the precision of measurement.

Description

technical field [0001] The invention relates to a method for establishing a quality quantum measurement benchmark. Background technique [0002] The International System of Units (SI), which is widely used around the world, has seven basic units: second for time, meter for length, kilogram for mass, ampere for current, Kelvin for temperature, candela for luminosity, and mole for mass. Various other units can be derived from these seven base units. The device used to preserve and reproduce the basic units is the measurement standard with the highest level of accuracy - the measurement basis. [0003] From the second half of the 19th century to the first half of the 20th century, countries established classic measurement benchmarks. These measurement benchmarks are generally based on the principles of classical physics and realized with some kind of particularly stable objects, so they are called physical benchmarks. For example, a platinum-iridium alloy cylinder preserved ...

AI Technical Summary

Problems solved by technology

and the exact amount of this cumulative year-to-year change is difficult to ascertain with certainty

[0007] 2. There is only one or one set of the highest level of physical measurement benchmarks in the world. Once accidental damage occurs due to natural disasters, wars or other reasons, it cannot be copied exactly, and the original continuous preservation of unit values ​​will also be interrupted.

[0008] 3. The quantity value transmission verification system is huge and complicated. From the highest level of physical benchmark to the specific application site, the quantity value has to be transmitted many times, and the accuracy will inevitably decrease.

However, as discussed in the "Background Technology" section, it is precisely because of the movement of the movable coil that the measurement data of the "Watt balance" scheme is highly dispersed, and the accuracy required for establishing a quantum mass benchmark has not been achieved. Require

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