Arduino based foot pressure sensitive smart safety system for industrial robots

A method of displaying discrete areas of pressure beneath the foot has been produced. The device employs a pressure sensitive elastomer which gives quantitative readings of the pressure developed. The 512 load cells are enclosed in a low profile platform only one inch in depth which provides a low-cost system that can be employed in clinical situations.

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EIT-Based Fabric Pressure Sensing

Computational and Mathematical Methods in Medicine ◽

10.1155/2013/405325 ◽

2013 ◽

Vol 2013 ◽

pp. 1-9 ◽

Cited By ~ 26

Author(s):

A. Yao ◽

C. L. Yang ◽

J. K. Seo ◽

M. Soleimani

Keyword(s):

Shape Change ◽

Boundary Current ◽

Applied Current ◽

Foot Pressure ◽

Pressure Sensing ◽

Pressure Mapping ◽

Pressure Sensitive ◽

Current Voltage ◽

Sensor Geometry ◽

The Relationship

This paper presents EIT-based fabric sensors that aim to provide a pressure mapping using the current carrying and voltage sensing electrodes attached to the boundary of the fabric patch. Pressure-induced shape change over the sensor area makes a change in the conductivity distribution which can be conveyed to the change of boundary current-voltage data. This boundary data is obtained through electrode measurements in EIT system. The corresponding inverse problem is to reconstruct the pressure and deformation map from the relationship between the applied current and the measured voltage on the fabric boundary. Taking advantage of EIT in providing dynamical images of conductivity changes due to pressure induced shape change, the pressure map can be estimated. In this paper, the EIT-based fabric sensor was presented for circular and rectangular sensor geometry. A stretch sensitive fabric was used in circular sensor with 16 electrodes and a pressure sensitive fabric was used in a rectangular sensor with 32 electrodes. A preliminary human test was carried out with the rectangular sensor for foot pressure mapping showing promising results.

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Safe Position Detection Based on Safety System-on-Chip (SSoC) for Wireless IoT Application

International Journal of Circuits, Systems and Signal Processing ◽

10.46300/9106.2020.14.132 ◽

2020 ◽

Vol 14 ◽

Keyword(s):

Detection System ◽

Dimensional Space ◽

Physical World ◽

Safety System ◽

Industrial Robots ◽

Robotic Arm ◽

Working Space ◽

Position Detection ◽

The People ◽

On Chip

Cyber Physical Systems (CPS) are predestined for use in Industry 4.0 applications. However, the interaction between the virtual and physical world also creates risks that is essential to be controlled. In highly automated industrial systems, for example, robots are used in confined spaces together with working humans. The risk posed by such systems endangers, among others, the people working there. This paper presents an approach to ensure the safety of the situation described above, which makes the workspace of industrial robots safer by implementing a safe workspace detection system. This system comprises several detection sensors implemented in a 2oo3 safety architecture and a Safety System on a Chip (SSoC) based on a safe 1oo2 system architecture. The safety-related redundancy provided by the detection and calculation elements enables a safe position detection of the robotic arm in the 3-dimensional space. The presented system monitors the position of the robotic arm and thus supports the safety of the surrounding objects and the people working there by leading to a safe standstill or to a reduced speed of movement of the robot as soon as the defined and permitted working space is left.

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Dynamic safety system for collaboration of operators and industrial robots

Open Engineering ◽

10.1515/eng-2019-0011 ◽

2019 ◽

Vol 9 (1) ◽

pp. 61-71 ◽

Cited By ~ 3

Author(s):

Timo Malm ◽

Timo Salmi ◽

Ilari Marstio ◽

Jari Montonen

Keyword(s):

Separation Distance ◽

Safety System ◽

Industrial Robots ◽

Safe Distance ◽

Validation Process ◽

Sensors And Actuators ◽

Safety Critical ◽

Stopping Distance ◽

And Performance ◽

Continuous Working

AbstractThere is an increasing need to have a safety system, which allows safe collaboration of operators and industrial robots. Industrial robots are powerful and therefore dangerous impacts and crashes need to be prevented by keeping safe distance between moving robot and the operator. Safe distance can be achieved by monitoring the position and speed of the robot and the position of the operator. Separation distance, speeds and performance of the control system, sensors and actuators are regulated by standards, which must be followed. VTT has developed a dynamic safety system, which monitors the speed and separation between persons and the robot in order to keep the stopping distance of the robot small enough to avoid impacts. The dynamic safety system enables safe continuous working beside the robot and automated restarting after a safety-rated monitored stop. An assistance system is applied to switch safety modes of the robot according to separation distance. Configuring and validating the safety system are safety-critical and time-consuming phases of design. Therefore, a configuration tool is required to get a coherent configuration, which support validation process.

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Smart Socks and In-Shoe Systems: State-of-the-Art for Two Popular Technologies for Foot Motion Analysis, Sports, and Medical Applications

Sensors ◽

10.3390/s20154316 ◽

2020 ◽

Vol 20 (15) ◽

pp. 4316

Author(s):

Andrei Drăgulinescu ◽

Ana-Maria Drăgulinescu ◽

Gabriela Zincă ◽

Doina Bucur ◽

Valentin Feieș ◽

...

Keyword(s):

Motion Analysis ◽

Relevant Information ◽

Medical Applications ◽

Relevant Research ◽

Foot Pressure ◽

Pressure Sensitive ◽

Starting Point ◽

Foot Motion ◽

First Time ◽

Pressure Analysis

The present paper reviews, for the first time, to the best of our knowledge, the most recent advances in research concerning two popular devices used for foot motion analysis and health monitoring: smart socks and in-shoe systems. The first one is representative of textile-based systems, whereas the second one is one of the most used pressure sensitive insole (PSI) systems that is used as an alternative to smart socks. The proposed methods are reviewed for smart sock use in special medical applications, for gait and foot pressure analysis. The Pedar system is also shown, together with studies of validation and repeatability for Pedar and other in-shoe systems. Then, the applications of Pedar are presented, mainly in medicine and sports. Our purpose was to offer the researchers in this field a useful means to overview and select relevant information. Moreover, our review can be a starting point for new, relevant research towards improving the design and functionality of the systems, as well as extending the research towards other areas of applications using sensors in smart textiles and in-shoe systems.

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