Time interval measurement system and measurement method of adopting mixed interpolation cascade structure

A technology of time interval measurement and cascade structure, which is applied in the direction of electrical unknown time interval measurement, devices and instruments for measuring time intervals, can solve the problem of inaccurate measurement results, and achieve the effect of improving the resolution of time interval measurement

Active Publication Date: 2018-04-13
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the problem of inaccurate measurement results in existing time interval measurement methods, the first object of the present invention is to provide a time interval measurement system using a hybrid interpolation cascade structure

Method used

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  • Time interval measurement system and measurement method of adopting mixed interpolation cascade structure
  • Time interval measurement system and measurement method of adopting mixed interpolation cascade structure
  • Time interval measurement system and measurement method of adopting mixed interpolation cascade structure

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Embodiment 1

[0028] combine image 3 , a time interval measurement system using a hybrid interpolation cascade structure, including a main gate generation and error extraction unit, a clock unit, a rough measurement unit, a first analog interpolation unit, a second analog interpolation unit, a first digital internal Interpolation unit, second digital interpolation unit and operation unit.

[0029] Among them, the main gate generation and error extraction unit are respectively connected with the clock unit, the rough measurement unit, the first analog interpolation unit and the second analog interpolation unit, the first analog interpolation unit is connected with the first digital interpolation unit, and the second The analog interpolation unit is connected to the second digital interpolation unit.

[0030] The rough measurement unit, the first digital interpolation unit and the second digital interpolation unit are all connected to the computing unit, and the clock unit is also connected...

Embodiment 2

[0033] A method of measuring a time interval measurement system using a hybrid interpolation cascade structure, using the time interval measurement system using the hybrid interpolation cascade structure described in the above embodiment 1, comprising the following steps:

[0034] Step 1: The main gate generation and error extraction unit receives the start event and the end event, and generates a main gate signal.

[0035] Step 2: The main gate signal is sent to the rough measurement unit, combined with the clock unit for rough measurement and counting, and then sent to the calculation unit after the rough measurement and counting;

[0036] Set the clock period of the coarse measurement unit as T clk ,M 0 is the count value of the rough measurement unit, then the time interval value obtained by the rough measurement unit is T 0 = M 0 ×T clk .

[0037] Step 3: The main gate signal is combined with the clock unit to generate the front error pulse T in the main gate generat...

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Abstract

The invention provides a time interval measurement system and measurement method of adopting a mixed interpolation cascade structure. The system comprises a main portal generation, an error extractionunit, a clock unit, a rough measuring unit, a first simulation interpolation unit, a second simulation interpolation unit, a first figure interpolation unit, a second figure interpolation unit and anoperation unit, the main portal generation and the error extraction unit are connected with the clock unit, the rough measuring unit, the first simulation interpolation unit and the second simulationinterpolation unit, the first simulation interpolation unit is connected with the first figure interpolation unit, the second simulation interpolation unit is connected with the second figure interpolation unit, the rough measuring unit, the first figure interpolation unit and the second figure interpolation unit are connected with the operation unit, and the clock unit is further respectively connected with the rough measuring unit, the first figure interpolation unit and the second figure interpolation unit. The system and method adopt the cascade structure of the simulation interpolation and the figure interpolation to exert technical advantages of two interpolations, and accordingly the time interval measurement distinguishability can be greatly improved.

Description

technical field [0001] The invention relates to the field of time interval measurement, in particular to a time interval measurement system and method using a hybrid interpolation cascade structure. Background technique [0002] Time interval measurement refers to the measurement of the time difference between the occurrence of two events, and its measurement principle is as follows: figure 1 shown. When performing time interval measurement, the main gate is controlled by the start event and the end event. The start event opens the main gate, and the stop event closes the main gate. During the opening period of the main gate, the clock pulses are accumulated and counted, and the accumulated number of clock pulses is multiplied by the clock period. , which is the time interval between the start event and the stop event. The start event and end event can also be two adjacent pulse signals of the same input signal. [0003] Since the input measured event is not synchronized ...

Claims

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Application Information

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IPC IPC(8): G04F10/04
CPCG04F10/04
Inventor 杜念文毛黎明刘强李伟杨帆
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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