Portable Pneumatic Actuator System Using MH Alloys, Employed as Assistive Devices

2007 ◽  
Vol 19 (6) ◽  
pp. 612-618 ◽  
Author(s):  
Mitsuru Sato ◽  
◽  
Shuichi Ino ◽  
Naoki Yoshida ◽  
Takashi Izumi ◽  
...  
Keyword(s):  
Metal Hydride ◽  
Hydrogen Pressure ◽  
Mechanical Energy ◽  
Power Source ◽  
Assistive Devices ◽  
Wheelchair User ◽  
Air Compressor ◽  
Sit To Stand ◽  
Seat Cushion ◽  
Actuator System

Metal hydride (MH) actuators that use reversible reaction between heat and mechanical energy are suitable as a power source for rehabilitation or assistive devices. To avoid the risk of a hydrogen drive and obtain broader use than conventional MH actuators, we developed an MH air compressor that converts the hydrogen pressure of the MH actuator to air pressure. Although this compressor requires time to restore consumed air, it has the advantages of small size and flexible shape. Sit-to-stand motion aid for a wheelchair user that is the size of a seat cushion was developed using the MH air compressor.

Application of Sit-To-Stand Assistive Device Based on Hip Support

2021 ◽  
Vol 14 ◽  
Author(s):  
Huaiqiang Zhang ◽  
Qiang Xue ◽  
Shuo Yang ◽  
Tongtong Wang ◽  
Binwei Zhou
Keyword(s):  
Lower Limb ◽  
Independent Living ◽  
Structural Characteristics ◽  
Assistive Devices ◽  
Assistive Device ◽  
Technology Application ◽  
Assist Devices ◽  
Advantages And Disadvantages ◽  
Sit To Stand

Background: Completing the transition from a sitting position to a standing position is a basic skill in people’s daily lives and is crucial for independent living. Lower limb dysfunction will bring many inconveniences into a person’s life and greatly affect their quality of life. Patients with lower limb dysfunction are a specialized group, and nursing problems for this group are becoming increasingly serious. Helping patients with lower limb dysfunction restore their lower limb mobility or assisting them to walk is a social problem necessary to be solved. Objective: : To review the recent sit-to-stand assistive devices based on hip support, classify them systematically and introduce their characteristics, including the mechanisms and the types of patients for which such mechanisms are applicable; to help patients with lower limb dysfunction or doctors (therapists) understand and choose a reasonable sit-to-stand assist device based on hip support. Methods: This paper summarizes literatures and patents about sit-to-stand assistive devices. From the aspects of structural characteristics, drive type and support modes based on the hip and applications situation, the advantages and disadvantages of the typical sit-to-stand assist devices are represented. Results: Current and future development trends on the structural characteristics, drive type and support modes based on the hip and applications situation of sit-to-stand assist devices are discussed to improve the humanization, modularization and applicability of sit-to-stand assist devices. Conclusion: Sit-to-stand assistive devices based on hip support can help patients improve the quality of their life, assist patients carrying out rehabilitation training, and delay the decline of lower limb function. However, the existing sit-to-stand assistive devices based on hip support need further improvement in the aspects of motion mechanism, new technology application and ergonomics design.

A new insight into ZIF-67 based triboelectric nanogenerator for self-powered robot object recognition

2021 ◽  
Author(s):  
Sugato Hajra ◽  
Manisha Sahu ◽  
Aneeta Manjari Padhan ◽  
Jaykishon Swain ◽  
Basanta Kumar Panigrahi ◽  
...  
Keyword(s):  
Object Recognition ◽  
Mechanical Energy ◽  
Power Source ◽  
Triboelectric Nanogenerator ◽  
Electrostatic Induction ◽  
Self Powered ◽  
Insight Into

Harvesting mechanical energy from surroundings can be a promising power source for micro/nano-devices. The triboelectric nanogenerator (TENG) works in the principle of triboelectrification and electrostatic induction. So far, the metals...

Human-Centered Metal Hydride Actuator Systems for Rehabilitation and Assistive Technology

2011 ◽  
pp. 154-170
Author(s):  
Shuichi Ino ◽  
Mitsuru Sato
Keyword(s):  
Assistive Technology ◽  
Metal Hydride ◽  
Mechanical Energy ◽  
Weight Ratio ◽  
Artificial Muscle ◽  
Enthalpy Change ◽  
Equilibrium Pressure ◽  
Machine Interface ◽  
Actuation Systems

Metal hydride materials can store a huge amount of hydrogen and can convert energy due to enthalpy change through a hydride reaction. Artificial actuation systems that employ this special physicochemical property are named metal hydride actuators. The actuators utilize the mechanical energy formed from hydrogen equilibrium pressure through thermal energy given to the metal hydride alloys as output. Metal hydride actuators have a simple structure and a number of features that make them attractive for use in rehabilitation engineering and assistive technology. They provide a high power-to-weight ratio, high strain actuation, human-compatible softness and noiselessness, and they are environmentally benign. The behavior of metal hydride actuators is also useful for overall human-machine interface applications. This article reviews the motivation for the development of some of the leading artificial muscle-like actuators, outlines the metal hydride actuators and describes its applications in quality-of-life technology.

2822 An Air Compressor using Negative Pressure Metal Hydride for Assistive Technologies

2005 ◽  
Vol 2005.4 (0) ◽  
pp. 239-240
Author(s):  
Mitsuru SATO ◽  
Shuichi INO ◽  
Hayato KUROKI ◽  
Takashi IZUMI ◽  
Tohru IFUKUBE
Keyword(s):  
Metal Hydride ◽  
Negative Pressure ◽  
Assistive Technologies ◽  
Air Compressor

A microcrystalline cellulose ingrained polydimethylsiloxane triboelectric nanogenerator as a self-powered locomotion detector

2017 ◽  
Vol 5 (7) ◽  
pp. 1810-1815 ◽  
Author(s):  
Arunkumar Chandrasekhar ◽  
Nagamalleswara Rao Alluri ◽  
Balasubramaniam Saravanakumar ◽  
Sophia Selvarajan ◽  
Sang-Jae Kim
Keyword(s):  
Microcrystalline Cellulose ◽  
Mechanical Energy ◽  
Power Source ◽  
Triboelectric Nanogenerator ◽  
Wearable Electronics ◽  
Significant Potential ◽  
Self Powered

Scavenging of ambient dissipated mechanical energy addresses the limitations of conventional batteries by providing an auxiliary voltaic power source, and thus has significant potential for self-powered and wearable electronics.

scholarly journals Development of a Compliance Variable Metal Hydride(MH) Actuator System for a Robotic Mobility Aid for Disabled Persons.

1996 ◽  
Vol 62 (597) ◽  
pp. 1912-1919 ◽  
Author(s):  
Mitsuru SATO ◽  
Shuichi INO ◽  
Shunji SHIMIZU ◽  
Tohru IFUKUBE ◽  
Yuichi WAKISAKA ◽  
...  
Keyword(s):  
Metal Hydride ◽  
Disabled Persons ◽  
Actuator System ◽  
Mobility Aid

scholarly journals Recent Advances in Self-Powered Electrochemical Systems

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Linglin Zhou ◽  
Di Liu ◽  
Li Liu ◽  
Lixia He ◽  
Xia Cao ◽  
...  
Keyword(s):  
Mechanical Energy ◽  
Power Source ◽  
Triboelectric Nanogenerator ◽  
Application Domain ◽  
Important Research ◽  
Electrochemical System ◽  
Electrochemical Systems ◽  
External Power Source ◽  
External Power ◽  
Self Powered

Electrochemistry, one of the most important research and production technology, has been widely applicated in various fields. However, the requirement of external power source is a major challenge to its development. To solve this issue, developing self-powered electrochemical system (SPES) that can work by collecting energy from the environment is highly desired. The invention of triboelectric nanogenerator (TENG), which can transform mechanical energy into electricity, is a promising approach to build SPES by integrating with electrochemistry. In this view, the latest representative achievements of SPES based on TENG are comprehensively reviewed. By harvesting various mechanical energy, five SPESs are built, including electrochemical pollutants treatment, electrochemical synthesis, electrochemical sensor, electrochromic reaction, and anticorrosion system, according to the application domain. Additionally, the perspective for promoting the development of SPES is discussed.

Sign in / Sign up

Export Citation Format

Share Document