StudentShare
Contact Us
Sign In / Sign Up for FREE
Search
Go to advanced search...

Sensor - Research Paper Example

Cite this document
Summary
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…
Download full paper File format: .doc, available for editing
GRAB THE BEST PAPER98.4% of users find it useful
Sensor
Read Text Preview

Extract of sample "Sensor"

Download file to see previous pages

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

...Download file to see next pages Read More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Sensor Research Paper Example | Topics and Well Written Essays - 3000 words”, n.d.)
Sensor Research Paper Example | Topics and Well Written Essays - 3000 words. Retrieved from https://studentshare.org/engineering-and-construction/1489041-sensor
(Sensor Research Paper Example | Topics and Well Written Essays - 3000 Words)
Sensor Research Paper Example | Topics and Well Written Essays - 3000 Words. https://studentshare.org/engineering-and-construction/1489041-sensor.
“Sensor Research Paper Example | Topics and Well Written Essays - 3000 Words”, n.d. https://studentshare.org/engineering-and-construction/1489041-sensor.
  • Cited: 0 times

CHECK THESE SAMPLES OF Sensor

Privacy Concerns of Sensor Networks

The author of this coursework "Privacy Concerns of sensor Networks" comments on the problems occurred with sensor networks and solutions.... hellip; In order to curtail abuse, new laws must be put into place and individuals who abuse these sensor networks must be aggressively pursued.... Furthermore, individuals who want to use the sensor networks for legitimate purposes – say shopkeepers who need to surveil customers to make sure that they are not shoplifting....
2 Pages (500 words) Coursework

Need for Amperometric Glucose Sensor in Health Sector

Such development measures includes establishment of self-monitoring devices including amperometric glucose sensors that can revolutionize complicated… Effective diagnosis and subsequent treatment glucose level borne diseases such as diabetes is dependent on proper monitoring and maintenance....
12 Pages (3000 words) Essay

Hall Effect Sensor

This paper ''Hall Effect sensor'' tells that this device is a transducer whose voltage output varies in response to a magnetic field.... The need for the development of the Hall Effect sensor finds its roots in the market to upgrade the technological discovery made in 1879 by an American scientist called Edwin Hall.... The voltage output, in this case is directly proportional to the magnetic field moving through the Hall Effect sensor.... RH is the co-efficient of the Hall Effect I am the amount of current flowing through the sensor (given in amps) t is the thickness of the sensor (shown in mm) B is the Magnetic Flux density (given in Teslas) (Electronics-Tutorials....
5 Pages (1250 words) Report

Design of Temperature Sensor

In the "Design of Temperature sensor" paper, a micro-controller based temperature sensor with a digital display is designed.... A process is based on a PIC18F45K22 microcontroller and an LM35 temperature sensor, an analog sensor used in the conversion of surrounding temperature to an analog voltage.... LMD35DZ integrated circuit analog temperature sensor is used.... The sensor's output is linked to one of the several ADC channel inputs in the PIC18F45K22 microcontroller in order to derive an equivalent digital format temperature value....
5 Pages (1250 words) Assignment

Wireless Sensor vs. Optical Fiber

This assignment "Wireless sensor vs.... Optical Fiber" presents a comparison between the Wireless sensor Network and the Optical Fiber.... The basic motive behind this comparison is to show that the Wireless sensor Network is better than the Optical Fiber.... hellip; Here it is an important point to mention that the data rate that optical fiber gives is not possible for the Wireless sensor Network but the technology has a lot of other qualities that optical fiber did not have (Kenneth, 1998), so in the preceding paragraphs I will present a brief but comprehensive overview among these....
1 Pages (250 words) Assignment

Electronic Sensor Design

This term paper "Electronic sensor Design" discusses electronic sensor designs for robots that are to deduce what is happening in the outside environment and to be able to reach for the delivery of services as are associated with the robot board as selected for the electronic sensor designs.... hellip; The report will examine a variety of electronic sensor designs along with their practical application in electrical appliances....
6 Pages (1500 words) Term Paper

Efficacy of Detection Sensors

Such features distinguish the sensor from the electric eye, which is mostly not considered a motion detector and works in a manner that a crossing of a person or the vehicle could interrupt a visible or a beam of infrared.... … Еffiсасy of Dеtесtiоn SensorsIntroductionMost of the modern detectors are using combination of different technologies....
8 Pages (2000 words) Essay

Security in Wireless Sensor Networks

… The paper “Security in Wireless sensor Networks” is an actual example of a lab report on information technology.... The paper “Security in Wireless sensor Networks” is an actual example of a lab report on information technology.... The WSN setup comprises of everywhere from some a hundred to more than a thousand of the sensor nodes.... These sensor nodes equipment comprise of the radio transceivers alongside the antennae, microcontrollers, interfacing electronic circuits, as well as the energy sources, especially the batteries....
11 Pages (2750 words) Lab Report
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Contact Us