A Pulsed-Biasing Strain Gauge Measurement System for Wireless Sensing Applications

2012 ◽  
Author(s):  
Guan-Liang Lee ◽  
Jau-Horng Chen ◽  
Kuan-Ming Li
Keyword(s):  
Measurement System ◽  
Strain Gauge ◽  
Measurement Errors ◽  
Wireless Sensors ◽  
Operation Time ◽  
Wireless Sensing ◽  
Sensing Applications ◽  
Constant Bias ◽  
Measurement Results ◽  
Gauge Measurement

This paper presents a pulsed-biasing strain gauge measurement system for wireless sensing applications. The use of pulsed-biasing on the strain gauge can reduce the power consumption of the sensor, which is crucial for low-power wireless sensors. Moreover, without using a constant bias current, power dissipated on the resistive bridge that includes the strain gauge can be reduced. Such reduction can also reduce measurement errors from an increased strain gauge temperature. A strain gauge wireless sensor was constructed using commercially available components. Measurement results show that the pulsed-biasing technique can be implemented with a duty cycle down to around 40% with negligible measurement error at a data rate of 32 Hz. The power saved is equivalent to an increased operation time of 50%.

scholarly journals Mathematical modeling of a strain gauge measurement system in MATLAB SIMULINK program

2020 ◽  
Vol 6 (2) ◽  
pp. 85-93
Author(s):  
Timur A. Raianov
Keyword(s):  
Mathematical Modeling ◽  
Measurement System ◽  
Strain Gauge ◽  
System Analysis ◽  
Force Measurement ◽  
Operating Conditions ◽  
Matlab Simulink ◽  
Software Model ◽  
Output Characteristics ◽  
Gauge Measurement

Background: In recent years, modern strain gauge systems for measuring, which are used in automobile, railway, aviation, and ship transport, as well as in the pulp, paper, and metallurgical industries, have become extremely popular. These metrological systems provide accurate measurement in difficult operating conditions. The most popular among sensors are strain gauges, they are increasingly used in various areas of marine operations and legal proceedings. They are the optimal solution in the field of torque measurement. Aim: The program creates a model of a strain gauge measurement system. Analysis of power output characteristics. Methods: The article describes the construction of a mathematical model of the strain gauge measurement system. The MATLAB SIMULINK library was used for simulation. The work is based on mathematical modeling and is aimed at creating a computer-based strain gauge model. The output characteristics are analyzed. The accuracy of the software model measurement was verified by checking the convergence of the actual and measured values. Results: A software model of the strain gauge force measurement system was created to create a real computer strain gauge measurement system. Output characteristics are obtained. Conclusions: A software model of the strain gauge measurement system is proposed; The output characteristics were studied and the measurement accuracy was checked.

Tunable and Wireless Photoimpedance Light Sensor

2014 ◽  
Vol 1666 ◽  
Author(s):  
Tanuj Saxena ◽  
Sergey Rumyantsev ◽  
Partha Dutta ◽  
Michael Shur
Keyword(s):  
Wireless Sensors ◽  
Dynamic Range ◽  
Frequency Dispersion ◽  
Semiconductor Layer ◽  
Device Performance ◽  
Wireless Sensing ◽  
Sensing Applications ◽  
Light Sensor ◽  
Materials Used

ABSTRACTWe report on the effects of the frequency dispersion in light sensitive materials used in photoimpedance wireless sensors. An example of such a sensor is a gated semiconductor connecting two or more fixed capacitances. The impedance of the device under illumination is changed by the change in the photoresistance of the semiconductor layer and the change in the gate-semiconductor capacitance. We report on the design and simulation of the frequency dispersion of the impedance of this device in silicon and discuss the physics and device performance. We also evaluate the dynamic range and sensitivity of the wireless photoimpedance sensors and show their advantages for wireless sensing applications compared to more conventional light sensors.

scholarly journals Perancangan Perancangan Sistem Pengukuran Kapasitansi Crude Oil Menggunakan Interdigital Capasitors (IDCs) Berbasis Arduino Uno

2019 ◽  
Vol 3 (2) ◽  
pp. 54-61
Author(s):  
Risse Entikaria Rachmanita ◽  
Haerul Ahmadi
Keyword(s):  
Crude Oil ◽  
Measurement System ◽  
Measurement Errors ◽  
Frequency Measurement ◽  
Capacitance Measurement ◽  
Measuring Device ◽  
Heating Systems ◽  
Measurement Results ◽  
Arduino Uno ◽  
Linearity Test

Arduino UNO R3 is one of the cheapest and easiest microcontroller boards that has great potential to be used as a basis for the measurement system. This study aims to develop measurement system of crude oil capacitance by using IDCs(Interdigital Capacitors). By knowing the value of crude oil capacitance, the crude oil permittivity value can be calculated. The crude oil permittivity value data is extremely needed in making crude oil heating systems using microwaves. The study used IDC sprinted on a PCB board with a copper layer as the electrode. Then, the system measurement results were compared with the results of PM 6303 RCL meter Phillip type A frequency measurement of 1 kHz which was used as reference data to determine the extent of measurement errors. From the results obtained, it is known that the error value of the Arduino UNO R3 based capacitance repeatability measurement is 0.47%. While the results of the linearity test measurement of crude oil capacitance measurement of temperature increases using the Arduino Uno-based IDCs sensor, the R2 value is 0.87. Thus it can be seen that the Arduino UNO R3-based capacitance measuring device has quite good sensor characteristics.

Ambient Energy Harvesting for Wireless Sensor Nodes: A Review

2014 ◽  
Vol 1025-1026 ◽  
pp. 1093-1098
Author(s):  
Mohamed Hanafiah bin Omar ◽  
Meng Hee Lim
Keyword(s):  
Energy Harvesting ◽  
Wireless Sensors ◽  
Business Processes ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Wireless Sensing ◽  
Power Devices ◽  
Wireless Sensor Nodes ◽  
Industrial Systems ◽  
Sensing Applications

Energy harvesting has generated a lot of interest in low power devices and wireless sensing applications as a viable replacement to the batteries that are required to power them. Wireless sensors nodes on the other hand have gain considerable interests from researchers and industries alike. Wireless sensing have the potential to improve productivity of industrial systems by providing greater awareness, control and integration of business processes. This paper attempts to provide an overview of the available technologies and at the same time deduce a practical energy harvesting platform as applied to wireless sensor nodes based on current research.

Application Of Strain Gauges In Measurements Of Strain Distribution In Complex Objects

2014 ◽  
Vol 6 (2) ◽  
pp. 135-145 ◽  
Author(s):  
Piotr Tutak
Keyword(s):  
Measurement System ◽  
Strain Gauge ◽  
Thermal Cycle ◽  
Strain Distribution ◽  
Main Idea ◽  
Measuring System ◽  
Strain Gauges ◽  
Complex Objects ◽  
Air Cooler ◽  
Gauge Measurement

Abstract This article presents an application of strain gauges in measurements of strain which occurs in charge air cooler during the thermal cycle test. The work shows the main idea of measuring system based on strain gauges and important aspects that should be considered when performing measurement. In this article there has been also presented construction and principle operation of a strain gauge measurement system.

Sign in / Sign up

Export Citation Format

Share Document