Power supply power-supply interference in smart sensors-to-microntroller interface for biomedical signals

The effects of power-supply interference on direct sensor-to-microcontroller interfaces based on measuring the charging and discharging time of an RC circuit that includes the sensor is observed in this assignment. By analysing the RC circuit, it shows that the measurement can be corrupted because o...

Full description

Bibliographic Details
Main Authors:	Ashraful, Muhammad, Khan, Sheroz, Ibrahimy, Muhammad Ibn
Format:	Book Chapter
Language:	English
Published:	IIUM Press 2011
Subjects:	TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices
Online Access:	http://irep.iium.edu.my/21687/ http://irep.iium.edu.my/21687/ http://irep.iium.edu.my/21687/1/POWER_SUPPLY_POWER-SUPPLY_INTERFERENCE_IN_SMART_SENSORS-TO-MICRONROLLER_INTERFACE_FOR_BIOMEDICAL_SIGNALS.pdf

id	iium-21687
recordtype	eprints
spelling	iium-216872012-11-07T07:56:03Z http://irep.iium.edu.my/21687/ Power supply power-supply interference in smart sensors-to-microntroller interface for biomedical signals Ashraful, Muhammad Khan, Sheroz Ibrahimy, Muhammad Ibn TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices The effects of power-supply interference on direct sensor-to-microcontroller interfaces based on measuring the charging and discharging time of an RC circuit that includes the sensor is observed in this assignment. By analysing the RC circuit, it shows that the measurement can be corrupted because of the power-supply trigger noise. To reduce the effects another resistor has been used to get the acceptable measurement of the charging and discharging time. Finally, a new approach also proposed to reduce the effects of power-supply and from this proposed circuit it can be said that the circuit is working properly. A microcontroller during communication with external circuits (or sensors) is making use of the signal conditioning circuits, which are required for signals conversion or translations to squeeze the acquired signal into a desirable range easily acceptable for the microcontroller.The common measurement chain in data-acquisition systems has four basic blocks: sensor, signal conditioner, analog-to-digital converter (ADC), and microcontroller shown in Figure 21.1. This measurement chain can be simplified by using an oscillator circuit as signal conditioner [1-4], since its time-modulated output signal can be directly connected to the microcontroller without using an ADC [5] shown in Figure 21.2. The measurement chain can be further simplified by directly connecting the sensor to the microcontroller [6-8], without using either a signal conditioner or an ADC shown in Figure 21.3. Such an interface circuit generally relies on measuring the charging or discharging time of an RC circuit that includes the sensor IIUM Press 2011 Book Chapter PeerReviewed application/pdf en http://irep.iium.edu.my/21687/1/POWER_SUPPLY_POWER-SUPPLY_INTERFERENCE_IN_SMART_SENSORS-TO-MICRONROLLER_INTERFACE_FOR_BIOMEDICAL_SIGNALS.pdf Ashraful, Muhammad and Khan, Sheroz and Ibrahimy, Muhammad Ibn (2011) Power supply power-supply interference in smart sensors-to-microntroller interface for biomedical signals. In: Principle of Transducer Devices and Components. IIUM Press, Kuala Lumpur, pp. 139-164. ISBN 978-967-418-172-7 http://rms.research.iium.edu.my/bookstore/default.aspx
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices
spellingShingle	TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices Ashraful, Muhammad Khan, Sheroz Ibrahimy, Muhammad Ibn Power supply power-supply interference in smart sensors-to-microntroller interface for biomedical signals
description	The effects of power-supply interference on direct sensor-to-microcontroller interfaces based on measuring the charging and discharging time of an RC circuit that includes the sensor is observed in this assignment. By analysing the RC circuit, it shows that the measurement can be corrupted because of the power-supply trigger noise. To reduce the effects another resistor has been used to get the acceptable measurement of the charging and discharging time. Finally, a new approach also proposed to reduce the effects of power-supply and from this proposed circuit it can be said that the circuit is working properly. A microcontroller during communication with external circuits (or sensors) is making use of the signal conditioning circuits, which are required for signals conversion or translations to squeeze the acquired signal into a desirable range easily acceptable for the microcontroller.The common measurement chain in data-acquisition systems has four basic blocks: sensor, signal conditioner, analog-to-digital converter (ADC), and microcontroller shown in Figure 21.1. This measurement chain can be simplified by using an oscillator circuit as signal conditioner [1-4], since its time-modulated output signal can be directly connected to the microcontroller without using an ADC [5] shown in Figure 21.2. The measurement chain can be further simplified by directly connecting the sensor to the microcontroller [6-8], without using either a signal conditioner or an ADC shown in Figure 21.3. Such an interface circuit generally relies on measuring the charging or discharging time of an RC circuit that includes the sensor
format	Book Chapter
author	Ashraful, Muhammad Khan, Sheroz Ibrahimy, Muhammad Ibn
author_facet	Ashraful, Muhammad Khan, Sheroz Ibrahimy, Muhammad Ibn
author_sort	Ashraful, Muhammad
title	Power supply power-supply interference in smart sensors-to-microntroller interface for biomedical signals
title_short	Power supply power-supply interference in smart sensors-to-microntroller interface for biomedical signals
title_full	Power supply power-supply interference in smart sensors-to-microntroller interface for biomedical signals
title_fullStr	Power supply power-supply interference in smart sensors-to-microntroller interface for biomedical signals
title_full_unstemmed	Power supply power-supply interference in smart sensors-to-microntroller interface for biomedical signals
title_sort	power supply power-supply interference in smart sensors-to-microntroller interface for biomedical signals
publisher	IIUM Press
publishDate	2011
url	http://irep.iium.edu.my/21687/ http://irep.iium.edu.my/21687/ http://irep.iium.edu.my/21687/1/POWER_SUPPLY_POWER-SUPPLY_INTERFERENCE_IN_SMART_SENSORS-TO-MICRONROLLER_INTERFACE_FOR_BIOMEDICAL_SIGNALS.pdf
first_indexed	2023-09-18T20:33:03Z
last_indexed	2023-09-18T20:33:03Z
_version_	1777408864312885248

Power supply power-supply interference in smart sensors-to-microntroller interface for biomedical signals

Similar Items