阅读说明：本技术 一种冷原子干涉仪的自动化数据采集与分析系统 (Automatic data acquisition and analysis system of cold atom interferometer ) 是由 栾广建 于 2020-12-31 设计创作，主要内容包括：本发明涉及一种冷原子干涉仪的自动化数据采集与分析系统,包括：时序控制系统硬件、计算机、网络通信接口,其中,所述时序控制系统硬件,用于控制磁光阱捕获或使原子团动作、拉曼激光对原子团作用和原子探测光信号数据传输；所述计算机,用于运行时序控制系统软件,用于控制时序控制系统硬件进行冷原子干涉实验,对原子探测光信号进行分析；所述网络通信接口,用于连接计算机与时序控制系统硬件。冷原子实验的时序控制硬件与干涉条纹实时分析被集成在一起,既能调整实验时序,又能简便地获取每次实验对应的干涉条纹数据,极大地提高了冷原子干涉实验的自动化程度；消除了实验过程中不同软件的切换与实验数据的移动所带来的时间损耗。(The invention relates to an automatic data acquisition and analysis system of a cold atom interferometer, which comprises: the system comprises time sequence control system hardware, a computer and a network communication interface, wherein the time sequence control system hardware is used for controlling a magneto-optical trap to capture or enable a radical to act, Raman laser to act on the radical and atomic detection optical signal data transmission; the computer is used for operating the time sequence control system software and controlling the time sequence control system hardware to carry out a cold atom interference experiment and analyze the atom detection optical signal; and the network communication interface is used for connecting the computer and the time sequence control system hardware. The time sequence control hardware of the cold atom experiment and the interference fringe real-time analysis are integrated, so that the experiment time sequence can be adjusted, the interference fringe data corresponding to each experiment can be simply and conveniently obtained, and the automation degree of the cold atom interference experiment is greatly improved; and time loss caused by switching of different software and movement of experimental data in the experimental process is eliminated.)

1. An automated data acquisition and analysis system for a cold atom interferometer, comprising: sequential control system hardware, a computer, a network communication interface, wherein,

the time sequence control system hardware comprises a circuit board for generating a timing trigger signal, a circuit board for outputting a frequency signal and a circuit board for outputting an amplitude signal, and is used for controlling a magneto-optical trap to capture and control atomic groups, controlling the action of Raman laser on the atomic groups and controlling the transition probability detection of the atomic groups;

the computer is used for operating the time sequence control system software and controlling the time sequence control system hardware to carry out a cold atom interference experiment and analyze the atom detection optical signal;

and the network communication interface is used for connecting the computer and the time sequence control system hardware.

2. The system according to claim 1, wherein the sequential control system software comprises a sequential logic control function module, an experimental configuration loading and saving function module, an interference fringe acquisition function module, an interference fringe data display function module, and an information prompt function module.

3. The system of claim 2, wherein the sequential logic control function module is configured to convert the synchronization signal logic corresponding to the experimental timing into byte data, and transmit the byte data to the sequential control system hardware through the network communication interface to perform the cold atom interference experiment;

the experiment configuration loading and storing functional module is used for recording the synchronous signal logic in a text file in a CSV format, and the text file is restored into an experiment time sequence by the time sequence control system software;

the interference fringe acquisition function module is used for calculating atomic group transition probability atomic transition probability by using the amplitude of the detection light signal, and performing sine function fitting on interference fringes formed by the atomic transition probability to obtain information of a plurality of interference fringes;

the interference fringe data display function module is used for displaying the collected cold atom interference detection optical signals and the atomic group transition probability in an independent small window form;

and the information prompt function module is used for prompting the unreasonable parameter setting of the experimental configuration.

4. The system according to claim 3, wherein said calculating atomic transition probability of atomic group transition probability using detection light signal amplitude, and fitting sine function to interference fringes composed of atomic transition probability to obtain information of several interference fringes comprises the following steps:

s1, changing the phase of the third beam of raman light to be continuously increased by a fixed value;

s2, acquiring the amplitude data of the interfered detection light signal;

s3, obtaining atomic numbers in the F-1 state and the F-2 state in the interfered atomic groups according to the detected light amplitude data, and obtaining the transition probability of the cold atomic groups;

and S4, performing sine function fitting on the collected transition probability data to obtain interference fringe data.

5. The system of claim 4, wherein the phase of the third Raman beam is incremented by a fixed value and is automatically performed by the timing control system software.

6. The system of claim 4, wherein the phase of the third beam of Raman light is related to the interference fringes by:

wherein P is the probability that an atom is in the F-1 state or the F-2 state,is the phase difference between the third beam of raman light and the second beam of raman light.

7. The system according to claim 4, wherein S3 further comprises plotting coordinate points in synchronization with the atomic number and the transition probability in separate small windows.

8. The system according to claim 4, wherein said fitting a sinusoidal function to the collected transition probability data to obtain interference fringe data comprises:

and after the experiment is started and the experiment is continuously operated for a specified long time, the timing sequence control system software carries out sine function fitting on the collected atomic group transition probability data in a segmented mode by taking 360 degrees as a period to obtain interference fringe data corresponding to each segment of data.

Technical Field

The invention relates to the technical field of data acquisition and analysis, in particular to an automatic data acquisition and analysis system of a cold atom interferometer.

Background

The cold atom interferometer uses three beams of Raman light to change the internal state of the atomic group, and completes the interference process. The phase difference between the third beam of Raman light and the second beam of Raman light can be manufactured by continuously changing the phase of the third beam of Raman light, and interference fringes required by measurement are obtained. And collecting a detection light signal after cold atom interference by using a high-speed photoelectric detector, and calculating the transition probability by using the amplitude value of the detection light so as to obtain complete interference fringes.

The data collection comprises the acquisition of electrical signals of the probe light by an analog-to-digital converter for processing in the form of voltage data. The current methods for acquiring the signals basically need separate virtual instrument control programs to respectively control different experimental devices. The detected light data and the interference fringe data need to be processed and analyzed by switching to other software. In hundreds of repeated experimental processes, a great deal of experimental time is wasted by continuously switching programs and transferring and loading data files. Therefore, it is necessary to realize an automatic interference data acquisition and analysis system, to realize the automatic operation of the experimental process, and to improve the utilization efficiency of the equipment.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides an automatic data acquisition and analysis system which is convenient to operate and can automatically acquire a cold atom interferometer.

The technical scheme for solving the technical problems is as follows:

an automatic data acquisition and analysis system of a cold atom interferometer comprises sequential control system hardware, a computer and a network communication interface, wherein:

the time sequence control system hardware comprises a circuit board used for generating a timing trigger signal, a circuit board used for outputting a frequency signal and a circuit board used for outputting an amplitude signal. It is used to control the magneto-optical trap to capture and control radicals, to control the action of raman laser on radicals and to control the probability detection of atomic transitions;

the computer is used for operating the time sequence control system software and controlling the time sequence control system hardware to carry out a cold atom interference experiment and analyze the atom detection optical signal;

the network communication interface is used for connecting a computer and the time sequence control system hardware;

furthermore, the time sequence control system software comprises a time sequence logic control function module, an experimental configuration loading and storing function module, an interference fringe acquisition function module, an interference fringe data display function module and an information prompt function module.

Furthermore, the sequential logic control function module is used for logically converting the synchronous signals corresponding to the experimental time sequence into byte data, transmitting the byte data to sequential control system hardware through a network communication interface, and performing cold atom interference experiments;

the experiment configuration loading and storing functional module is used for recording the synchronous signal logic in a text file in a CSV format, and the text file is restored into an experiment time sequence by the time sequence control system software;

the interference fringe acquisition function module is used for calculating atomic group transition probability atomic transition probability by using the amplitude of the detection light signal, and performing sine function fitting on interference fringes formed by the atomic transition probability to obtain information of a plurality of interference fringes;

the interference fringe data display function module is used for displaying the collected cold atom interference detection optical signals and the atomic group transition probability in an independent small window form;

and the information prompt function module is used for prompting the unreasonable parameter setting of the experimental configuration.

As a further improvement of the method of the present invention, the method for calculating the atomic transition probability of the atomic group transition probability by using the amplitude of the detection light signal and performing sine function fitting on the interference fringes composed of the atomic transition probability to obtain the information of a plurality of interference fringes comprises the following steps:

step S1: changing the phase of the third beam of Raman light to be continuously increased by a fixed value;

step S2: acquiring the amplitude data of the interfered detection light signals;

step S3: acquiring the atomic numbers of the interfered atomic groups in an F-1 state and an F-2 state according to the amplitude data of the detection light, and obtaining the transition probability of the cold atomic groups;

step S4: fitting a sine function to the collected transition probability data to obtain interference fringe data;

as a further improvement of the method of the present invention, in step S1, the third beam of raman optical phase is incremented automatically by the software of the timing control system;

further, the phase of the third beam of raman light is related to the interference fringes by:

wherein P is the probability that an atom is in the F-1 state or the F-2 state,is the phase difference between the third beam of raman light and the second beam of raman light.

As a further improvement of the method of the present invention, in the step S3, the detected light signal amplitude data of the step S2 can be directly used inside the timing control system software without switching between different software and mobile experiment data files. Synchronously drawing coordinate points in the independent small window by the atomic number and the transition probability;

as a further improvement of the method of the present invention, the specific steps of step S4 are: after the experiment is started and the experiment is continuously operated for a specified long time, the timing sequence control system software carries out sine function fitting on the collected atomic group transition probability data in a segmented mode by taking 360 degrees as a period to obtain interference fringe data corresponding to each segment of data

The invention has the beneficial effects that: based on the automatic data acquisition and analysis system for acquiring the cold atom interferometer, the time sequence control hardware of the cold atom experiment and the interference fringe real-time analysis are integrated, so that the experiment time sequence can be adjusted, the interference fringe data corresponding to each experiment can be simply and conveniently acquired, and the automation degree of the cold atom interference experiment is greatly improved; time loss caused by switching of different software and movement of experimental data in the experimental process is eliminated; based on the operation steps of the system, other more cold atom experiment steps and automatic implementation of an analysis method can be introduced.

Drawings

FIG. 1 is a schematic diagram of an automated data acquisition and analysis system according to an embodiment of the present invention;

FIG. 2 is a software functional diagram of a timing control system according to an embodiment of the present invention.

Description of reference numerals:

1. sequential control system hardware; 2. a computer; 3. a network communication interface; 201. timing control system software.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

Example 1

Aiming at the cold atom interference instrument control equipment required by the invention, the equipment consists of time sequence control system hardware, a computer and a network communication interface. The time sequence control system hardware is used for controlling the running experiment time sequence, the computer is used for running the time sequence control system software, and the network communication interface is used for connecting the computer and the time sequence control system hardware.

The present invention is described in detail below with reference to the system architecture:

as shown in fig. 1, the present invention provides an automated data acquisition and analysis system capable of achieving convenient operation and automatically acquiring a cold atom interferometer, and the system includes a time sequence control system hardware 1, a computer 2, and a network communication interface 3.

The time sequence control system hardware 1 comprises a circuit board for generating a timing trigger signal, a circuit board for outputting a frequency signal and a circuit board for outputting an amplitude signal. It is used to control the magneto-optical trap to capture and control radicals, to control the action of raman laser on radicals and to control the probability detection of atomic transitions;

the computer 2 is used for operating the time sequence control system software 201 and controlling the time sequence control system hardware 1 to perform cold atom interference experiments. The atomic detection optical signal is analyzed by the timing control system software 201;

the network communication interface 3 is used for connecting the computer 2 and the time sequence control system hardware 1, and is used for transmitting data between the time sequence control system hardware 1 and the time sequence control system software 201;

further, the time sequence control system software 201 includes a time sequence logic control function, an experimental configuration loading and storing function, an interference fringe obtaining function, an interference fringe data display function, and an information prompt function.

Further, the sequential logic control function converts the synchronous signal logic corresponding to the experimental time sequence into byte data, and transmits the byte data to the sequential control system hardware 1 through the network communication interface 3 to perform the cold atom interference experiment;

the experiment configuration loading and saving function records the logic of the synchronous signals in a text file in a CSV format, and the text file is restored to an experiment time sequence by the time sequence control system software 201;

the interference fringe acquisition function calculates atomic group transition probability atomic transition probability by using the amplitude of the detection light signal, and performs sine function fitting on interference fringes formed by the atomic transition probability to obtain information of a plurality of interference fringes;

the atomic transition probability is synchronously recorded in a CSV format and an interference experiment time sequence in the computer 2, and can be further analyzed and operated;

the interference fringe information can output images of analysis results and the literal record data of initial phases, phase noise and Allan variances in an independent pop-up window form;

the interference fringe data display function displays the collected cold atom interference detection optical signals and the atomic group transition probability in an independent small window form;

the coordinate display of the independent small window and the interference fringe data source for display can be adjusted by a user;

and the information prompt function prompts the unreasonable parameter setting of the experimental configuration.

In the time sequence control system software, the interference fringe acquisition function includes the following steps:

step S1: changing the phase of the third beam of Raman light to be continuously increased by a fixed value;

step S2: acquiring the amplitude data of the interfered detection light signals;

step S3: acquiring the atomic numbers of the interfered atomic groups in an F-1 state and an F-2 state according to the amplitude data of the detection light, and obtaining the transition probability of the cold atomic groups;

step S4: performing sine function fitting on the collected transition probability data to obtain interference fringe data

As a further improvement of the method of the present invention, in step S1, the increment of the raman optical phase of the third beam is automatically performed by the timing control system software 201;

further, the phase of the third beam of raman light is related to the interference fringes by:

wherein P is the probability that an atom is in the F-1 state or the F-2 state,is the phase difference between the third beam of raman light and the second beam of raman light.

As a further improvement of the method of the present invention, in step S3, the amplitude data of the detected light signal in step S2 can be directly used inside the software of the timing control system without switching between different software and mobile experimental data files, and the atomic number and the transition probability can be synchronously plotted as coordinate points in an independent small window;

as a further improvement of the method of the present invention, the specific steps of step S4 are: after the experiment starts and runs continuously for a specified long time, the timing control system software 201 performs sine function fitting on the collected atomic group transition probability data in a segmented manner by taking 360 degrees as a period, and interference fringe data corresponding to each segment of data is obtained.

Through the implementation method, after setting basic experiment parameters, a user can directly observe the atom group interference state of each time sequence of an experiment, quickly obtain a final interference fringe result, and analyze the defects of the experimental scheme design and the defects of experimental equipment according to the result; meanwhile, a user can directly adjust experiment time sequence logic and change an experiment scheme without switching back and forth among a plurality of sets of control programs and analysis programs.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.