Four-channel noise thermometer with quantum voltage as reference

A four-channel, thermometer technology, applied to thermometers, thermometers with directly heat-sensitive electric/magnetic elements, measuring devices, etc., can solve the problem of inability to match power and impedance at the same time, limit the measurement level of the measurement circuit, and prolong the statistical average time Measuring time etc.
CN103674315AInactive Publication Date: 2014-03-26NAT INST OF METROLOGY CHINA
5 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NAT INST OF METROLOGY CHINA
Publication Date
2014-03-26
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a four-channel noise thermometer with a quantum voltage as reference. The four-channel noise thermometer with the quantum voltage as the reference comprises a noise source to be measured, a reference quantum voltage pseudo noise source, and a switch change-over circuit which is connected with the noise source to the measured and the reference quantum voltage pseudo noise source. The four-channel noise thermometer with the quantum voltage as the reference is characterized in that a four-channel amplifying and filtering circuit is connected with a switch connecting circuit, and the four-channel amplifying and filtering circuit is correspondingly connected with a four-channel acquisition channel of a data acquisition and processing portion. The four-channel noise thermometer with the quantum voltage as the reference can effectively reduce integral time required by measurement, reduces system deviations and can play an enormous role in thermodynamic temperature and Boltzmann constant measurement studies.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of temperature measurement, in particular to a four-channel noise thermometer with quantum voltage as a reference. Background technique

[0002] Temperature is a physical quantity that characterizes the degree of hot or cold of an object, and it is a macroscopic manifestation of the intensity of thermal motion of a large number of microscopic particles. Many physical properties of matter are closely related to temperature, so accurate temperature measurement is of great significance for scientific experiments, industrial production and people's lives.

[0003] The premise of accurate temperature measurement is to establish a temperature scale. A temperature scale is a scale that digitizes temperature. It specifies a set of methods for digitizing temperature and defines the unit of temperature. After the development of the temperature scale has gone through three historical stages, it is currently the international pr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More