Load cells in force sensing analysis -- theory and a novel application

Müller, Ivan; Brito, R. de; Pereira, Carlos Eduardo; Brusamarello, Valner

doi:10.1109/mim.2010.5399212

Cited by 80 publications

(41 citation statements)

References 2 publications

(3 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…They are therefore of extensive use as force-sensing resistors (FSR) in robotic links, biomechanical diagnosis, touchpads, touchscreens, and industrial processes, which are demanding force-sensing accuracy with less space consumption at reduced cost [2]. Load cells have been the most linear, accurate, repeatable, and temperature-independent devices that have successfully accomplished the task of converting force to voltage [3,4]. Nevertheless, their cost and size have been a drawback when applications have budget and space constraints.…”

Section: Introductionmentioning

confidence: 99%

A Novel and Inexpensive Approach for Force Sensing Based on FSR Piezocapacitance Aimed at Hysteresis Error Reduction

et al. 2018

View full text Add to dashboard Cite

Force-sensing resistors (FSRs) are inexpensive alternatives to load cells. They are suitable for applications where noninvasive devices are needed to measure force, stress, or pressure. However, they have been proved to be hysteresis prone and offer nonrepeatable readings due to their highly voltage-dependent electrical resistance. A piezocapacitive effect has been found as an alternative phenomenon that is able to offer force-dependent readings of capacitance with less hysteresis error. Also, this capacitance is not dependent on voltage, which also improves repeatability in force measurements. Since measuring capacitance is more expensive than resistance, the least costly conditioning circuitry is desired. An inexpensive alternative using an LM555 that oscillates depending on capacitance is here presented. Hysteresis and repeatability errors have been reduced for a widespread-used force-sensing resistor brand.

show abstract

Section: Introductionmentioning

confidence: 99%

A Novel and Inexpensive Approach for Force Sensing Based on FSR Piezocapacitance Aimed at Hysteresis Error Reduction

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Load cells can be applied as a sensor for measuring the weight of different objects [1]. Load cells are usually used for weight measurement for food, vehicles and animals [2].…”

Section: Bmimentioning

confidence: 99%

“…The camera height can be determined by using an object with known height and the vanishing point. The camera height can be computed by manipulating (2 …”

Section: B Vanishing Point and Camera Heightmentioning

confidence: 99%

Application of Artificial Neural Network and Background Subtraction for Determining Body Mass Index (BMI) in Android Devices Using Bluetooth

Madariaga¹,

Linsangan²

2016

IJET

View full text Add to dashboard Cite

Abstract-Body mass index (BMI) is one of the different ways to monitor the health of a person. It is based on the height and weight of the person. This study aims to compute for the BMI using an Android tablet by obtaining the height of the person by using a camera and measuring the weight of the person by using a weighing scale or load cell. The height of the person was estimated by applying background subtraction to the image captured and applying different processes such as getting the vanishing point and applying Artificial Neural Network. The weight was measured by using Wheatstone bridge load cell configuration and sending the value to the computer by using Gizduino microcontroller and Bluetooth technology after the amplification using AD623 instrumentation amplifier. The application will process the images and read the measured values and show the BMI of the person. The study met all the objectives needed and further studies will be needed to improve the design project.Index Terms-Artificial neural network, bluetooth, body mass index, vanishing point, wheatstone bridge load cell.

show abstract

“…According to (1), the influence of temperature fluctuation should be eliminated in order to obtain pure strain variation.…”

Section: Fiber Bragg Gratingmentioning

confidence: 99%

“…For the traditional force transducers or tension sensors mainly based on electrical strain gauges or piezoelectric materials, there are many disadvantages which restrict their utilization in harsh environment, since they are influenced by electromagnetic interference (EMI) and difficult to realize force's remote or multipoint measurement as discussed elsewhere [1][2][3]. Therefore, there is a lack of an efficient and effective method to realize multipoint measurement or long-term online monitoring of the tensile forces on anchor ropes at a remote distance.…”

Section: Introductionmentioning

confidence: 99%

Design and Application of a Fiber Bragg Grating Tension Sensor for Anchor Rope

Huang

Zhou

Zhang

et al. 2013

Advances in Mechanical Engineering

View full text Add to dashboard Cite

A fiber Bragg grating (FBG) tension sensor for anchor rope has been proposed and implemented in the full-scale impact test of rockfall protection barriers in this paper. According to the measurement principle of the tension sensor, the wavelength shift difference of the two FBGs which, respectively, measure the positive and negative strain in the spring element is utilized as sensing signal. Therefore, the force sensitivity is increased and the temperature cross-sensitivity is compensated. Experimental results indicate that the measurement sensitivity is 14.85 pm/kN in a range from 0 to 150 kN. The dynamic forces on anchor ropes in barriers have been clearly recorded by the designed sensors during the impact test, and the variation of the impact forces could be mainly divided into three stages. This kind of tension sensor is expected to be widely used for force's quasi-distributed measurement or remote monitoring in industrial and mechanical fields.

show abstract

Load cells in force sensing analysis -- theory and a novel application

Cited by 80 publications

References 2 publications

A Novel and Inexpensive Approach for Force Sensing Based on FSR Piezocapacitance Aimed at Hysteresis Error Reduction

A Novel and Inexpensive Approach for Force Sensing Based on FSR Piezocapacitance Aimed at Hysteresis Error Reduction

Application of Artificial Neural Network and Background Subtraction for Determining Body Mass Index (BMI) in Android Devices Using Bluetooth

Design and Application of a Fiber Bragg Grating Tension Sensor for Anchor Rope

Contact Info

Product

Resources

About