Highly-Reliable Approximate Quadruple Modular Redundancy with Approximation-Aware Voting

Masadeh, Mahmoud; Aoun, Alain; Hasan, Osman; Tahar, Sofiène

doi:10.1109/icm50269.2020.9331771

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…• Fault Tolerance: AC enhances the failure tolerance of IoT-enabled assistive devices. Tolerating errors and inaccuracies in computations allows the system to run reliably even during hardware collapses or environmental disturbances [29].…”

Section: Approximate Computingmentioning

confidence: 99%

Approximate Computing-based Assistive Shopping Trolley for Visually Challenged People

Masadeh,

Alkhdour,

AbuDiak

et al. 2024

IJCDS

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Sighting is one of the five senses that help us to live in this world. According to the World Health Organization (WHO), more than 2 billion people encounter vision challenges that inflict severe life problems. The visually challenged people must utilize their senses, i.e., touch, smell, taste, and sound, to perform their daily tasks. Visually challenged people suffer from visual impairment, either partial or total. Their therapy could be corrective eyeglasses, assistive devices, and medical treatment. In this work, we target an assistive device, i.e., we propose, design and implement an approximate computing-based smart shopping cart for visually challenged people. The proposed assistive shopping cart utilizes the Internet of Things (IoT), e.g., Radio Frequency Identification (RFID) sensors, an Infrared (IR) Sensor, and an Arduino microcontroller. The audio was employed during the shopping journey to notify the shopper of his current location in the mall, the name and price of each item he scans, and other information about the product that is written on the package. Combining many features in a single cart will result in a revolutionary device that might revolutionize the face of shopping for the visually impaired. The proposed cart improvements include obstacle detection, voice commands, and emergency assistance. The designed cart emphasizes the potential of technology to bridge barriers and empower people with disabilities, as well as the beneficial influence that inclusive solutions may have on overall quality of life.

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Section: Approximate Computingmentioning

confidence: 99%

Approximate Computing-based Assistive Shopping Trolley for Visually Challenged People

Masadeh,

Alkhdour,

AbuDiak

et al. 2024

IJCDS

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“…The crux of redundant technique lies in fault monitoring, the objective of which is to identify fault channels in the system and reconfigure the system, isolate faults, and prevent fault propagation [1] Currently, the primary monitoring method for redundant sensors is voting. The purpose of signal voting is to improve the availability or integrity of signals, or both [2] . The redundancy will increases hardware cost, architecture complexity, maintenance work, and weight [3] .…”

Section: Introductionmentioning

confidence: 99%

A Threshold Design Method of Aircraft Sensor Fault Detection Monitor

Yang,

Xue

2023

J. Phys.: Conf. Ser.

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A design method is proposed based on probability and statistics to solve the issue that the contradiction between false alarm rate and missed detection rate of sensor comparing monitor threshold definition. The sensor tracking error probability density function is deduced based on the probability, the false alarm rate and missed detection rate are calculated based on the different monitor threshold. Then a criterion is provided in according with sensor failure rate, aircraft dispatch reliability and monitor failure rate. In order to verify it, a quad redundant rate gyro used on aircraft is analysed and an advanced comparing monitor threshold is calculated. Comparing with the original threshold, the monitor coverage rate with the new threshold is increased 1.42 times than the original one. The actual flight date is researched to verify that the monitor failure rate reach to the minimum value 3.91*10-07/Fh which decrease one order of magnitude comparing with the original one 3.5*10-06/Fh. It could be verified that this method could achieve the balance between the safety and dispatch reliability requirement.

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“…In addition to soft errors, reliable operation of today's computing systems must contend with faults that may still be occurring at hardware level. Redundant systems have been widely used to address both errors and faults; schemes based on majority voting and modular redundancy such as triplemodular-redundancy (TMR) [6 -10], and quadruple-modularredundancy (QMR) [11,12], have been widely used. However, these schemes incur in a large hardware overhead, so degrading design metrics such as area and power [13].…”

Section: Introductionmentioning

confidence: 99%

Reduced Precision Redundancy Systems by Approximation (RPA)

Junsangsri¹,

Lombardi²

2022

Preprint

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<p>This paper proposes new designs for Reduced Precision Redundancy (RPR) systems using Approximation (RPAs). Reduced redundancy is accomplished by utilizing approximate modules, hence requiring substantially different designs for the decision hardware for generating an output. Some of proposed schemes deal with a single erroneous data word generated by a module (in the presence of single and multiple bit errors) using three modules as inputs to the decision hardware of the RPA (denoted as 2E1A and 1E2A where E (A) stands for exact (approximate)). The remaining RPA schemes operate under single and multiple bit errors in at most two modules out of four input modules (denoted as 2E2A). Different from RPRs found in the technical literature, the proposed RPAs operate using only logic operations (so no arithmetic unit is involved as decision hardware). The probability of providing an exact data word at the output of the RPA under the above error conditions is analytically found; simulation results are also provided. It is shown that the difference between simulated and analytical probabilities is at most 5%. Circuit based metrics (such as delay, power dissipation, and area) of the proposed designs are simulated and compared with RPR; the proposed designs outperform RPR in all metrics, except the area of the four-input RPA (2E2A) due to the larger number of modules. The application of the proposed RPAs to image processing is also presented; the results show that the proposed schemes are very efficient for such application. </p>

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Highly-Reliable Approximate Quadruple Modular Redundancy with Approximation-Aware Voting

Cited by 6 publications

References 17 publications

Approximate Computing-based Assistive Shopping Trolley for Visually Challenged People

Approximate Computing-based Assistive Shopping Trolley for Visually Challenged People

A Threshold Design Method of Aircraft Sensor Fault Detection Monitor

Reduced Precision Redundancy Systems by Approximation (RPA)

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