169 research outputs found
A training model of an automated storage and retrieval system (AS/RS) with customized warehouse management system (WMS)
AS/RS is a key industrial automation system that has drastically reduced the workforce needed to run a warehouse. Via a computer-controlled system, many intensive labour jobs are taken over by the system, including tediously moving and sorting heavy load from the minute of receving until shipping to customers, intensive paperwork to record goods receiving and order receipts. Somehow, in real business, the system is always complex in the perspective of engineering considerations, depending on the nature of the business, tending to upgrading and modification from
time to time. It is desirable that the engineering training curve would provide an engineer perspective in industry design concepts and contemporary teclmologies to the students, not in the operator prospective. This project is intended to develop a training model of AS/RS for the engineering students. The learning curves are provided through three levels in the system integration. The device level illustrates
basic input and output devices that are carefully choosen. The controller level processes all input information from the input devices and host computer. The supervisory level implements graphic user interface for system monitoring and control for the operator. The training model also emphasizes in three design concepts, flexibility, expand ability and modularity. Flexibility will allow a broad spectrum of application environments and extend application life. Expandability will allow
application in areas not yet defined. Modularity will enhance modification and maintenance
A mechatronic system for achieving optimum alignment of lower limb prosthesis
Misalignment in the lower limb prosthesis can cause great discomfort in the stumpsocket
interface and disturbance to gait function. In the long run, it could deteriorate
the musculoskeletal system. In practice, the assessment still depends heavily on the
verbal feedback of an amputee and experiences of a prosthetist. Moreover it is
inconsistent amongst the prosthetists.
Prosthetic alignment involves the adjustment of the prosthetic components
relative to the gait quality. Some methods were proposed, including symmetry
index, variation in a step-to-step transition, stability within the zone of integrated
balance, matching roll-over shape (ROS) to an ideal ROS and etc. It is not clear if
the optimum alignment could be achieved. These methods exhibit a few limitations,
i.e. limited use of gait variables in a single comparison and non-uniform results
when different gait variables are applied. There is a need to provide an objective
assessment method that processes high dimensional gait variables and presents them
in a simple form. In addition, it could be impractical and expensive clinically to
spend excessive time on a patient. An ambulatory gait measurement system could
achieve this objective to a certain extent.
This research investigates a potential engineering solution that is able to
provide an assistive and objective assessment of the lower limb prosthetic alignment
that provides optimal gait quality.
The effort includes a development of a low-cost ambulatory gait
measurement system which could be reliably used during indoor and outdoor trials.
Human walking trials using the designed ambulatory system are designed and
performed to justify the proposed solution. A novel gait analysis method using
Principle Component Analysis and Self-Organizing Feature Map is proposed to
process high dimensional gait data into a simple plot and a decision guide. The
proposed methodology could help to collect sufficient gait data during indoor and
outdoor gaits and could provide an objective gait assessment during the application
of lower limb prosthetic alignments
Radiation Detector Circuit
This thesis is focused on building a radiation detector circuit along with the
Arduino Uno microcontroller. Nowadays, radiation is commonly being used in several
fields such as medical field and communication field. However, radiation is still
harmful to all of us if it is in a large dose. Therefore, a radiation detector circuit is built
in order to detect the existence of radiation. In this project, AM-241 is used as the
radiation source. AM-241 emits mainly alpha radiation and the SiC photodiode is used
as the radiation sensor. To deal with this project, a transimpedance amplifier circuit is
built as the interface between Arduino Uno microcontroller and the SiC photodiode.
Then, the output voltage is fed into any analog pin of the Arduino Uno microcontroller.
The Arduino Uno microcontroller is programmed to calculate the values like the output
voltage and the current passing through the SiC photodiode. All these values are
displayed on the LCD and also compared to the values measured by using the
multimeter. The difference between both has been analyzed and there is almost no
difference. The performances of the SiC photodiode and the transimpedance amplifier
circuit have also been analyzed. The possible reasons of why Am-241 alpha radiation is
undetectable by the SiC photodiode have been revealed. Yet, the main reason is that of
the weak strength of the Am-241 alpha radiation
- …