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A method and device for digitizing scintillation pulses

A scintillation pulse and pulse width modulation technology, applied in the field of signal processing, can solve the problem of high cost, achieve low price, reduce system power consumption and PCB circuit area, and reduce cost

Active Publication Date: 2022-05-10
RAYMEASURE MEDICAL TECH CO LTD SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and device for digitizing scintillation pulses, thereby solving the problem of high cost of scintillation pulse signal sampling in the prior art

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  • A method and device for digitizing scintillation pulses
  • A method and device for digitizing scintillation pulses
  • A method and device for digitizing scintillation pulses

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Embodiment Construction

[0042] The present invention will be further described below in conjunction with specific embodiments. It should be understood that the following examples are only used to illustrate the present invention but not to limit the scope of the present invention.

[0043] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly disposed on the other element or there may also be an intervening element. When an element is referred to as being "connected / coupled" to another element, it can be directly connected / coupled to the other element or intervening elements may also be present. As used herein, the term "connected / coupled" may include electrical and / or mechanical physical connections / coupled. As used herein, the term "comprising / comprising" refers to the presence of a feature, step or element, but does not exclude the presence or addition of one or more other features, steps or elements. As used herein, the term "and / or" i...

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Abstract

The present invention provides a method and device for digitizing scintillation pulses. The method includes: step S1: setting n theoretical threshold voltages according to the requirement of multi-threshold voltage sampling; step S2: calculating the pulse width modulation characteristic according to the value of the theoretical threshold voltage, using The I / O port of the FPGA generates n channels of pulse width modulation signals corresponding to different theoretical threshold voltages according to the pulse width modulation characteristics; Step S3: Input the n channels of pulse width modulation signals into the filter circuit to generate corresponding n threshold voltage signals ; Step S4: Input the scintillation pulse signal to be sampled and n threshold voltages into n comparators of FPGA respectively and perform voltage comparison; to acquire threshold voltage-time pairs. The present invention completes MVT sampling by replacing a DAC with a filter circuit built with resistors and capacitors, has a simple structure, can greatly reduce costs, and reduce system power consumption and PCB circuit area.

Description

technical field [0001] The present invention relates to the field of signal processing, in particular to a method and device for digitizing scintillation pulses. Background technique [0002] The MVT (Multi-Voltage Threshold, multi-threshold voltage) sampling method is a method of digitalizing scintillation pulses that is different from time interval sampling. It sets n threshold voltages Vth according to the characteristics of scintillation pulses; it uses n low-voltage differential signal receiving ports. Voltage comparator, when the flicker pulse to be sampled crosses any threshold voltage Vth, the voltage comparator outputs a state transition and the threshold voltage Vth corresponding to the state transition; The transition time is digitally sampled; at the same time, the threshold voltage Vth corresponding to the state transition is identified to obtain the blinking pulse voltage time pair, and the digital sampling of the blinking pulse is completed. [0003] In a tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03L7/18G04F10/00
CPCH03L7/18G04F10/005
Inventor 陈瑞奚道明刘苇曾晨
Owner RAYMEASURE MEDICAL TECH CO LTD SUZHOU