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Single photon sampling signal frequency measurement realization system and method

A technology for implementing a system and an implementation method, which is applied in the signal frequency measurement implementation system of single photon sampling and the instantaneous frequency measurement of radio frequency signals, and can solve the problems of low precision, complex system architecture, and poor real-time processing capability.

Active Publication Date: 2020-10-27
成都唯博星辰科技有限公司
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the problems of low sensitivity, low precision, poor real-time processing capability, complex system architecture and other problems in the signal frequency measurement technology in the current biomedical sensing equipment, a single photon sampling signal measurement technology is provided. frequency realization system and method

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  • Single photon sampling signal frequency measurement realization system and method
  • Single photon sampling signal frequency measurement realization system and method
  • Single photon sampling signal frequency measurement realization system and method

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Embodiment 1

[0034] Such as figure 1 As shown, a single-photon sampling signal frequency measurement implementation system includes a radio frequency preprocessing unit, a single photon sampling unit and a signal processing unit. The input signal is a radio frequency signal, and the radio frequency signal is processed by the radio frequency preprocessing unit and converted into two signals. They are the in-phase signal and the quadrature signal respectively. Both the in-phase signal and the quadrature signal are input to the single-photon sampling unit, and the single-photon sampling unit converts the two-way radio frequency signals into the first digital signal and the second digital signal after processing. digital signal, the in-phase signal corresponds to the first digital signal, and the quadrature signal corresponds to the second digital signal, the first digital signal and the second digital signal are input to the signal processing unit at the same time, and the signal processing un...

Embodiment 2

[0047] A single-photon sampling signal frequency measurement implementation method, comprising:

[0048] Step S1, processing the input signal into two radio frequency signals, which are in-phase signal and quadrature signal;

[0049] Step S2, converting the two radio frequency signals into a first digital signal corresponding to the in-phase signal and a second digital signal corresponding to the quadrature signal;

[0050] In step S3, the first digital signal and the second digital signal are subjected to frequency spectrum calculation and parameter detection to obtain a frequency measurement result.

[0051] As one of the embodiments, in the step S1, the phase difference between the in-phase signal and the quadrature signal is 90°, and the phase of the in-phase signal and the quadrature signal is realized by a frequency phase shifter.

[0052] As one of the embodiments, the step S2 includes the following process:

[0053] Step S21, the attenuated laser is divided into two ...

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Abstract

The invention discloses a single photon sampling signal frequency measurement realization system and method. The scheme comprises a radio frequency preprocessing unit, a single photon sampling unit and a signal processing unit, an input radio frequency signal is processed and converted into two paths of radio frequency signals, namely an in-phase signal and an orthogonal signal, through the radiofrequency preprocessing unit; the in-phase signal and the orthogonal signal are both input into the single-photon sampling unit; the single-photon sampling unit converts the two paths of radio frequency signals into a first digital signal corresponding to the in-phase signal and a second digital signal corresponding to the orthogonal signal after processing; the first digital signal and the seconddigital signal are input into the signal processing unit at the same time, and the signal processing unit obtains frequency parameters of the input radio frequency signal through a fast processing algorithm. The brand-new single photon sampling signal frequency measurement realization provided by the invention has the advantages of high sensitivity, good realizability, good biological safety andthe like, and has important application value for broadband and real-time signal frequency measurement in the fields of biomedical sensing and the like.

Description

technical field [0001] The invention relates to the field of wideband radio frequency signal detection, in particular to a single photon sampling signal frequency measurement realization system and method, which can be used for the instantaneous frequency measurement of radio frequency signals in equipment such as biomedical sensing. Background technique [0002] Biomedical engineering uses radio frequency photon sensing technology to monitor physiological parameters such as pressure, temperature, heart rate, and respiration rate of the human body. In the RF photon sensing system, the frequency of the RF signal has a certain linear mapping relationship with the parameters to be measured. The rapid measurement of signal frequency is of great significance to the resolution and identification of human body parameters. With the need for high-precision and safety monitoring of human physiological parameters in clinical medicine, the power of radio frequency signals that can be u...

Claims

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Application Information

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IPC IPC(8): H04B10/50H04B10/516H04B10/54G01J1/56
CPCG01J1/56G01J2001/442G01R23/02H04B10/503H04B10/516H04B10/54
Inventor 赵志颖陈吉欣刘志强
Owner 成都唯博星辰科技有限公司
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