Delay-line temperature sensors and VLSI thermal management demonstrated on a 60nm FPGA

Xie, Shizhong; Ng, Wai Tung

doi:10.1109/iscas.2014.6865698

Cited by 13 publications

(3 citation statements)

References 12 publications

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“…The principal block of this circuitry is tapped delay line and ring oscillator made up of inverters. This utilizes less resources as compared to [11]. The PPG generates pulses of 43.92ns, 83.77ns, 127.9ns, and 157.1ns based on selection at room temperature.…”

Section: A Programmable Pulse Generator (Ppg)mentioning

confidence: 99%

Enhancement of Commercial Grade VLSI Chips into Industrial Grade using a Novel Thermal Monitoring and Control Technique

Magadum*,

Guhilot

2020

IJRTE

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The aerospace and military applications demanding low cost, high performance, reliable computing chips at low operating temperature environment. In the proposed work a cost-effective solution has developed with novel mechanism to enhance use of commercial grade VLSI chips for industrial grade applications. Here the commercial grade FPGA worked satisfactorily beyond its lower temperature range typically up to - 15°C. A thermoelectric cooler is used for temperature grade extension along with temperature sensor and TDC. A fully digital onchip temperature sensor based on delay line is implemented on FPGA. The TDC used, provides a digital equivalent of variation in delay due to change in temperature with time resolution of 213ps and temperature resolution of 0.06°C throughout the operating range.

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Section: A Programmable Pulse Generator (Ppg)mentioning

confidence: 99%

Enhancement of Commercial Grade VLSI Chips into Industrial Grade using a Novel Thermal Monitoring and Control Technique

Magadum*,

Guhilot

2020

IJRTE

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“…8 was introduced in our past paper [1]. In this architecture, the frequency of the RO is not directly measured unlike [2,11]. The signal from the RO is detected and synchronized by a rising-edge detector, rather than directly sent to the counter.…”

Section: Synchronous Ring Oscillator Architecture (Sro)mentioning

confidence: 99%

Implementation of a fast relative digital temperature sensor to achieve thermal protection in Zynq SoC technology

Lefebvre

Montero

Rubio

2017

Microelectronics Reliability

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More and more industrial embedded systems are developed to undergo hard environmental conditions, especially high temperatures. To prevent this impact, environmental conditions (e.g. the temperature) could be monitored. Plenty of new industrial designs are built around SoCs, and more especially around the Zynq-7000 introduced by Xilinx in 2011. In fact, monitoring the temperature inside the Zynq has become a challenge. While many applications focused on precision, the application proposed here instead is in an industrial context and aims at detecting a temperature excess as fast as possible to achieve the thermal protection of a logic area of the chip. Most of the digital sensors designed require a calibration to be operational. Such a process is not viable for time to market, and a solution must be found to either lighten it (e.g. by doing a simple 3-points calibration) or simply avoiding it. Instead of measuring the temperature in an absolute way, this paper focuses on detecting if the temperature is above or below a threshold. This work exhibits the implementation of three temperature digital sensors with promising results on Zynq technology. Two of the presented sensors are based on a ring-oscillator and another uses a flip-flop as a sensing element. Results show that a temperature increase can be detected in less than 1ms without any calibration protocol and this sensor was found to perfectly fit the targeted application.

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“…Among the dynamical systems, systems with a time delay are an important category. Time delays appear in different practical systems, such as biological systems (Yüzbaş and Sezer, 2015), economical systems (Ellis and Christofides, 2015), thermal systems (Xie and Ng, 2014), chemical processes (Hashemi et al, 2016) and robotic systems (Cho et al, 2016). In many cases, delay is a source of instability and poor performance.…”

Section: Introductionmentioning

confidence: 99%

Delay-independent sliding mode control of time-delay linear fractional order systems

Yousefi

Binazadeh

2016

Transactions of the Institute of Measurement and Control

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This paper considers the problem of delay-independent stabilization of linear fractional order (FO) systems with state delay. As in most practical systems in which the value of delay is not exactly known (or is time varying), a new approach is proposed in this paper, which results in asymptotic delay-independent stability of the closed-loop time-delay FO system. For this purpose, a novel FO sliding mode control law is proposed in which its main advantage is its independence to delay. Furthermore, a novel appropriate delay-independent sliding manifold is suggested. Additionally, two theorems are given and proved, which guarantee the occurrence of the reaching phase in finite time and the asymptotic delay-independent stability conditions of the dynamic equations in the sliding phase. Finally, in order to verify the theoretical results, two examples are given and simulation results confirm the performance of the proposed controller.

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Delay-line temperature sensors and VLSI thermal management demonstrated on a 60nm FPGA

Cited by 13 publications

References 12 publications

Enhancement of Commercial Grade VLSI Chips into Industrial Grade using a Novel Thermal Monitoring and Control Technique

Enhancement of Commercial Grade VLSI Chips into Industrial Grade using a Novel Thermal Monitoring and Control Technique

Implementation of a fast relative digital temperature sensor to achieve thermal protection in Zynq SoC technology

Delay-independent sliding mode control of time-delay linear fractional order systems

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