Force Sensor Force sensors will be used in exoskeleton design of lower limb to measure the amount of force that is being applied at a specific point on the exoskeleton at any time in order to establish feedback control. The exoskeleton is designed to stabilize patient’s body weight while walking…
The feedback system is designed so well that it updates the status of input torque in fraction of a second and as a result exoskeleton keeps working accordingly; and works well with frequent torque changes. A heel pressure sensor is required that produces an electrical signal whenever heel touches the ground or force is sensed on the heels because of its interaction with the ground. Signal from this sensor helps in regulating the sequential movement of the exoskeleton. These force sensors are usually generated by making use of a couple of force sensors but in our design use of a simple piezoelectric or capacitive device works well as a heel sensor and is placed on the heel of the exoskeleton design on the side that is directly in touch with the ground. In order to accurately track the force applied by the user to the legs on the exoskeleton distributed force sensors will be used. These sensors help in measuring distributed forces being applied by the human body over a specified area rather than collective force applied to the entire leg. This approach of distributed force helps to track the applied force at any given point on the leg during the gait to check for proper rehabilitation of the leg. Sensors placed under each heel will sense whether the foot is in contact with the ground, signaling to the leg that the motion should come back to a standing phase. Myographic Sensors Electro-Myographic sensors are used to directly measure the electrical activity of human muscles. In case of exoskeleton, myographic sensors can be placed on the belly of muscle. In this case, electrical activity of human muscles is directly translated to force that is being exerted by the leg onto the exoskeleton, by measuring the amplitude of the force. There is a limitation in using EMG technique in the design of lower limb exoskeleton. If EMG is incorporated in the design of exoskeleton then wearing this device would not remain convenient for the patients as electro-myographic sensors need direct interface to the skin. This can be avoided by making use of acoustic myographic techniques. In short these sensors are used to keep record of the current muscular activity of the lower limb and helps in detecting whether or not the lower limb is capable of recovering to its original state. Other than that these sensors can also be incorporated to replace strain gauges that are being used in our design to measure the force being applied by the leg on the exoskeleton. This can be done by simply applying acoustic sensors between the knee and ankle of the human leg and the resulting signals can be transformed into energy magnitude. From this force being exerted on the lower limb can be determined easily. Acoustic sensors are not able to provide direct signal to the control system as the signal is too low when observed in terms of voltage. Therefore, we need pre-processing circuitry to reduce hardware induced noise as well as improve signal quality. BU-7135 is an accelerometer based acoustic myographic sensor. It is covered with a silicon case and accelerometer is placed within this cover. It is then protected by a layer of PCB and air chamber is also provided before having contact either the skin through silicone membrane. Here is the detailed diagram showing the internal structure of the device. The AMG sensor is not used individually within the circuit, rather pre-amplification circuit is provided along the sensor to get better signal. Here is the design of ...
Cite this document
(“Sensor Research Paper Example | Topics and Well Written Essays - 3000 words”, n.d.)
Retrieved from https://studentshare.net/engineering-and-construction/105975-sensor
(Sensor Research Paper Example | Topics and Well Written Essays - 3000 Words)
“Sensor Research Paper Example | Topics and Well Written Essays - 3000 Words”, n.d. https://studentshare.net/engineering-and-construction/105975-sensor.
Geoffrey Moore through the use of the model endeavored to reflect the cycle of technology adoption through the identification made of five types of main adopters. The five main adopters identified can be listed as follows. The first adopter is termed as the innovators that constitutes of people who easily adapt new technology or new processes.
This means that the object must not revisit their initial position. The velocity sensor is based on the movement further from the starting point of the object. Returning to the turning point means that the person has achieved zero velocity. Maximizing velocity requires the individual to take efforts that maximize the amount displaced from their original positions.
The history of the sensor is also highlighted and it accounts for the development of the sensors to what is contemporary limit switches. It coming into place is also discussed under the inventor which is coupled with the how it is applied in the industries as well as the industries where the kind of sensors are engaged.
In it, there is the introductory part of the sensor relating to its principles of operation and use. Secondly, the paper discusses the history of the sensor from in the period of invention and the modifications that have been done over the period. Close to this is the person who invented the sensor, the year of invention and the features as at the time of invention.
There is also an in depth discussion on how the sensor is used and the advantages and disadvantages of the sensor in an industrial setting. Given the role played by the sensors, it was also important that the mechanism of operation of the sensor is discussed.
The camera has an eleven point auto-focus system with 3D focus tracking. It has an in camera retouch image editing and GPS geo-tagging capabilities. The camera has such a unique design with a 1-button live view
These wearable sensors are purposed for the older generation which is constantly on the increase and will monitor and provide reports on the health changes such as cardiovascular, pulmonary diseases or respiratory diseases or changes which may
The protection checkpoints are built on the international roads in which all vehicle traffic is halted to detect and arrest unlawful aliens, drugs, in addition to other illegal activity. Every border troop controls and
Low energy adaptive clustering hierarchy (LEACH) is mainly designed for the sensor networks in cases where the end user intends to remotely monitor and control the environment. Its main goal is to lower
7 Pages(1750 words)Research Paper
GOT A TRICKY QUESTION? RECEIVE AN ANSWER FROM STUDENTS LIKE YOU!
Let us find you another Research Paper on topic Sensor for FREE!