A simple interface circuit for micromachined gas sensors

Baroncini, M.; Placidi, P.; Cardinali, G.C.; Scorzoni, A.

doi:10.1016/s0924-4247(03)00348-0

Cited by 22 publications

(12 citation statements)

References 11 publications

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“…The above equations was obtained by considering the rotational and linear velocity of the body as it rolls down the plane [13,14]. The a experimental is the average acceleration of the body taken from its acceleration as it passes the three other sensors.…”

Section: Data Gatheringmentioning

confidence: 99%

Developing Low Cost Laboratory Apparatus for Hardware Interfacing System

Lacsamana¹,

Ganiron²,

Taylor³

2014

IJUNESST

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Hardware interfacing system for visual C++ plays an important role in co-design of the embedded computer system. It links the software part and the hardware part of the system. The design process supports software interface implementation and hardware interface synthesis. This paper shows the hardware and software interfaces can be implemented by using low cost laboratory apparatus in embedded computer system, which includes the primitive interface, the synchronous interface and the data communication protocol between the hardware and the software.

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Section: Data Gatheringmentioning

confidence: 99%

Developing Low Cost Laboratory Apparatus for Hardware Interfacing System

Lacsamana¹,

Ganiron²,

Taylor³

2014

IJUNESST

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“…Many papers give the specific structure of the metaloxide semiconductor gas sensor [14,15]. Semiconductor gas sensor changes the conductance of sensitive materials by the sorption acting between testing gas and the sensitive materials, and characteristic of the sensitive materials root in the absorption and reaction process in the materials surface [16].…”

Section: Designing Ideasmentioning

confidence: 99%

A practical testing system for gas sensor array

Li¹,

Chen²,

Liu³

2008

2008 International Conference on Information and Automation

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To improve the selectivity of the gas sensor, a practical testing system for testing sensor array and discriminating gases in real-time has been developed. Based on the analysis of the temperature dependence characteristic of the semiconductor sensitive material electric conductivity, the hardware control circuit and the software design method of the testing system were discussed in details. According to the characteristic of the semiconductor gas sensor, this system provides two operating modes of the sensor array: static mode and dynamic mode. The different testing methods make this system obtain some essential characteristics that the general methods can not obtain. This indicated that the system was a practical and flexible system to testing gas sensor array. In a word, this system has provided a practical and convenient platform for testing the semiconductor gas sensor array. We can get more information of the gas sensors by using this system, such as the dynamic response process of the gas sensors and how to improve the selectivity of gas sensors to different gases.

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“…Gas sensors now have wide spread application including automation in industries, domestic appliances, health, services, space exploration, defence equipment, transport, construction and many more. With the development of processing and computational facility, gas sensors [1] have helped to achieve considerable accuracy and control of a system. A signal conditioning unit is an absolute part of a gas detection system.…”

Section: Introductionmentioning

confidence: 99%

“…Integrated oscillator circuits have also been reported with the gas sensor for conversion of voltage to frequency with an improved resolution [21]. Also, many authors have reported their work using some unusual techniques for driving the heater temperature, controlling the heater temperature and for measuring the output of readout sensor [1,[22][23][24][25][26]. However, there are very few reports so far been published on microcontroller-based discrete signal conditioning unit on MEMS platform.…”

Section: Introductionmentioning

confidence: 99%

Development of integrated microsystem for hydrogen gas detection

Das

Sarkar

Roy

2018

IET Circuits, Devices & Systems

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A low-power microelectromechanical system-based metal-oxide gas sensor along with integrated signal conditioning unit is presented in this study to detect and quantify the variation of H 2 gas concentrations. The interface circuit controls the sensor operating temperature, measures the H 2 gas concentration, contributes a user-friendly interface and can be used with any suitable sensor network. A PIC16F877A microcontroller has been used for this purpose. The temperature of the sensors was stabilised by controlling the actuating voltage of the microheater. Temperatures of the microheater depend on the output voltage of the digital-to-analogue converter (DAC) and were measured by sampling the heater resistance through the use of a voltage divider and analogue-to-digital converters (ADCs). A microcontroller accordingly adjusts the output of DAC's in order to apply the appropriate steering voltage to the heaters. The method employed to measure the concentration of gases is to sample the voltage drop over the resistances of the sensors by ADCs. Alarming system for safety measure was also implemented in this design. The preventive action was taken by introducing an additional feature of wireless communication by sending short message service via global system for mobile modem to the designated emergency number.

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A simple interface circuit for micromachined gas sensors

Cited by 22 publications

References 11 publications

Developing Low Cost Laboratory Apparatus for Hardware Interfacing System

Developing Low Cost Laboratory Apparatus for Hardware Interfacing System

A practical testing system for gas sensor array

Development of integrated microsystem for hydrogen gas detection

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