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Time correlation single photon counting circuit and system and method thereof

A single-photon counting and time-correlated technology, applied in measurement circuits, photometry, fluorescence/phosphorescence, etc., can solve problems such as signal loss and achieve the effect of improving simplicity

Pending Publication Date: 2021-11-26
EDINBURGH INSTR +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Often the signal is completely lost and "finding" the histogram takes time and experience, as well as changing cables of different lengths

Method used

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  • Time correlation single photon counting circuit and system and method thereof
  • Time correlation single photon counting circuit and system and method thereof
  • Time correlation single photon counting circuit and system and method thereof

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Embodiment Construction

[0051] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0052] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0053] In this document, for the convenience of description, spatially relative terms, such as "below", "below", "lower", "above", "above", "upper", etc., may be used to describe the relationship between one element or feature and another. The relationship of elements or features in the drawings. It will be understood that the spatially relative terms are intended to encompass different orientations of the item in use or o...

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Abstract

The embodiment of the invention relates to a time correlation single photon counting circuit and system and method, which comprises a constant proportion phase discriminator, a time-to-amplitude converter and a voltage amplifier which are connected in sequence, and a first signal selector is arranged between the constant proportion phase discriminator and the time-to-amplitude converter, a starting circuit channel and a stopping circuit channel are arranged between the first signal selector and the time-to-amplitude converter; a delay element is arranged on the stop circuit channel; the first signal selector is used for selecting and switching between a start pulse and a stop pulse; and the delay element is used for adjusting the delay time of the signal. By adding the signal selector and the delay element, the attenuation signal can be accurately positioned and the forward / reverse mode operation can be selected without changing the length of the cable or signal input, so that the simplicity of acquiring the measured data is improved.

Description

technical field [0001] The invention relates to the field of fluorescence delay testing, in particular to a time-correlated single-photon counting circuit and its system and method. Background technique [0002] The information disclosed in this Background section is only for enhancing the understanding of the general background of the present invention and should not be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] Time-correlated single-photon counting (TCSPC) is widely used to acquire fluorescence decay kinetics of organic and inorganic samples from picoseconds to microseconds. A modern technical solution comes in the form of an acquisition module containing: a single electronic printed circuit board containing all analogue and digital functions, a power supply, a computer interface (USB) and two 50 ohm inputs. One of the inputs is used for synchronization, a...

Claims

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Application Information

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IPC IPC(8): G01J1/44G01N21/64
CPCG01J1/44G01N21/6408G01J2001/442G01J2001/4238
Inventor 约翰·麦金托什托尼·莱纳斯德克·纳特
Owner EDINBURGH INSTR
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