公开(公告)号：US11754601B2

公开(公告)日：2023-09-12

申请号：US17128206

申请日：2020-12-21

Applicant: SHANXI UNIVERSITY

Inventor： Jianyong Hu ,  Ruiyun Chen ,  Chengbing Qin ,  Guofeng Zhang ,  Jie Ma ,  Liantuan Xiao ,  Suotang Jia

IPC: G01R23/02 ,  G01R23/16

CPC classification number: G01R23/02 ,  G01R23/16

Abstract: A frequency measurement method and a system thereof are provided. The method includes: generating to-be-detected emergent light under an action of the electro-optical crystal when a light source irradiates an electro-optical crystal disposed in the microwave electric field; detecting, by a single-photon detector, the to-be-detected emergent light to obtain a detection result of the single-photon detector; and determining a frequency of the microwave signal based on the detection result of the single-photon detector and a Fourier transform algorithm.

公开(公告)号：US11073469B2

公开(公告)日：2021-07-27

申请号：US16080711

申请日：2018-03-05

Applicant: SHANXI UNIVERSITY

Inventor： Lei Dong ,  Hongpeng Wu ,  Frank K. Tittel ,  Liantuan Xiao ,  Suotang Jia

IPC: G01N21/17

Abstract: The disclosure relates to a quartz-enhanced photoacoustic spectroscopy gas detection apparatus and method based on beat effect. Provided is a quartz-enhanced photoacoustic spectroscopy gas detection apparatus based on beat effect, comprising a photoacoustic signal detection module, a gas chamber, a light source module and a data acquisition module. In the present invention, by detecting the beat signal generated by mixing the piezoelectric signal output from the quartz tuning fork with the demodulation signal of the lock-in amplifier, the electrical parameters of the quartz crystal oscillator and the concentration of the gas to be measured can be obtained accurately in a time period on the order of milliseconds.

公开(公告)号：US11578966B2

公开(公告)日：2023-02-14

申请号：US17465428

申请日：2021-09-02

Applicant: Shanxi University

Inventor： Jizhou Wu ,  Jie Ma ,  Suya Song ,  Liantuan Xiao ,  Suotang Jia

IPC: G01B11/06

Abstract: The present disclosure relates to a test paper counting technology, in particular to a portable test paper counting device and method based on a single photon detector. A portable test paper counting device based on a single photon detector is provided, which includes a box-shaped housing, two guide rail pairs, two hanger rods, a laser, a reflecting mirror, a single photon detector, a power supply, and a PC computer. A rectangular operating hole penetrating from left to right is formed in a lower edge of a right side wall of the box-shaped housing. A right part of a bottom wall of the box-shaped housing is provided with an assembly hole penetrating from up to down. A left side wall of the box-shaped housing is provided with a threading hole penetrating from left to right. Sliders of the two guide rail pairs both face downwards.

公开(公告)号：US10084549B2

公开(公告)日：2018-09-25

申请号：US15385452

申请日：2016-12-20

Applicant: Shanxi University

Inventor： Jianyong Hu ,  Jie Ma ,  Linjie Zhang ,  Liantuan Xiao ,  Suotang Jia

IPC: H04B10/70 ,  H04B10/532 ,  H04B10/516 ,  H04B10/556 ,  H04L9/08

CPC classification number: H04B10/70 ,  H04B10/5161 ,  H04B10/532 ,  H04B10/5561 ,  H04B10/5563 ,  H04L9/0852

Abstract: A single photons communication method and system is provided. In an example, an information loading module in a transmitting terminal of the single photons communication system may code to-be-sent target information as a corresponding target modulation frequency according to a pre-saved relationship between information and modulation frequency, and perform frequency modulation on a quantum state of communication light generated by a light source by using the target modulation frequency so that the transmitting terminal may send out modulated target communication light. After receiving the target communication light, an information decoding module in a receiving terminal of the single photons communication system may decode the target modulation frequency from a sequence of receiving photons of the target communication light through Fourier transform or other ways, and obtain target information corresponding to the target modulation frequency according to the relationship between information and modulation frequency.