A High-Precision Gated Integrator for Repetitive Pulsed Signals Acquisition

Electronics

Stefano Salvatori¹  Andrea Orsini¹  Sara Pettinato¹  MariaCristina Rossi²  Marco Girolami³  DanieleMaria Trucchi³ 

[1] Engineering Department, Università degli Studi Niccolò Cusano, via don Carlo Gnocchi 3, 00166 Rome, Italy;Engineering Department, Università degli Studi Roma Tre, via Vito Volterra 62, 00146 Rome, Italy;Istituto di Struttura della Materia (ISM), Consiglio Nazionale delle Ricerche (CNR), Sede Secondaria di Montelibretti, via Salaria km 29.300, 00015 Monterotondo Stazione, Roma, Italy;

关键词: gated integrator;    pulsed signal;    synchronized integration;    state configurable timer;    radiation dosimetry;   

DOI  :  10.3390/electronics8111231

来源: DOAJ

【 摘 要 】

Gated integrating measurement method represents a widely used approach when fast, repetitive analogue signals are concerned. In this work a compact synchronized gated-integrator prototype has been realized and preliminary characterized. Front-end electronics is based on the mature high-precision switched-integrator transimpedance-amplifier IVC102 whose output is connected to a precision LT1911 inverting amplifier, whereas analogue-to-digital conversion, as well as timing control circuitry, are performed by a high-efficiency LPC845 microcontroller. Synchronizing signal detection with the external trigger generated in coincidence with a source, the proposed circuitry amplifies and integrates the signal only when the pulse is generated, displaying excellent performances in terms of linearity, sensitivity and signal-to-noise ratio. Hence, the proposed solution represents an affordable alternative to continuous-time regime measurement-techniques, usually adopted in radiation dosimetry where accuracy and sensitivity are strict requirements for treatment quality assurance.

【 授权许可】

Unknown