In this paper, a semicylindrical capacitive sensor with an interface circuit used for flow rate measurement is proposed. The numerical analysis method to calculate the capacitance of analyzed and discussed. picofarad-range variation can be detected converted into voltage by circuit. Besides, compact enough simplify complexity could easily implemented measurement. All functions sensing are proved successfully through HSPICE simulation. Measurement results have confirmed correct performance...

In this paper, a calibrated temperature difference sensor transducer is newly proposed for monitoring environmental applications. The output signal pulse stream, and thus it could be easily sent over wide range of transmission media, such as package switch network, radio, optical, infrared, ultrasonic, so on. Another innovation that the calibration method can reduce nonlinear error arising from sensors. By collocating with sensor, which has 7.43 to 33.77 K, corresponding frequency ranges...

This paper newly proposes a high-sensitivity ambient particulate matter 2.5 (PM2.5) particle detector for personal exposure monitoring devices. The proposed PM2.5 compactly combined commercial dust sensor and complementary metal-oxide-semiconductor transducer. measured concentration ranged from 6.64 to 55.12 μg/m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> , the corresponding output frequency range of was 0.63 4.03 MHz. sensitivity...

This paper reports a design for complementary metal oxide semiconductor (CMOS) microelectromechanical system accelerometer used in Internet of Things (IoT) devices seismic detection. The proposed device performs the main functions accelerometers, and has advantage automatically selecting electrostatic force feedback to null position sensor. applied 0.35 μm 2P4M CMOS technology with 3-V power supply. sensitivity continuous time voltage analog sensing circuits was 131.99 mV/g maximal...

In this work, a capacitive signal conditioner of CMOS integrated capacitance-to-frequency converter with digital compensation circuit designed for sensor interface applications is newly proposed. The proposed has the low cost feature. That due to that output digitized produced without realizing analog converter. Hence, hardware could be reduced. Besides, pulse stream, it easily sent over wide range transmission media, such as PSN, radio, optical, IR, ultrasonic, and etc. Based upon 0.35 um...

In this paper, a digitized vibration detector implemented by CMOS capacitive transducer with in-plane silicon-on-insulator (SoI) accelerometer is newly proposed. The proposed attractive due to the fact that all circuits and sensor can be robustly compactly combined together. A total solution including continuous-time-voltage (CTV) analog sensing digitalized interface are in paper. Based upon 0.35-μm 2P4M technology 3 V power supply, functions performance of successfully tested proven through...

In this paper, a monolithic complimentary metal-oxide-semiconductor (CMOS) autocompensated sensor transducer for capacitive measuring systems is newly presented. The proposed converter compact and robust to integrate in systems. attractive due the fact that digitized signal produced without realizing analog-to-digital converter. Hence, hardware cost could be reduced. Furthermore, output of pulse stream; it easily sent over wide range transmission media, such as package switch networks...

In this paper, a calibrated salinity sensor transducer for monitoring of ocean environment and aquaculture is newly proposed. The output signal pulse stream, it could be easily sent over wide range transmission media, such as package switch network, radio, optical, infrared, ultrasonic. Another innovation that the proposed calibration method can reduce nonlinear error arising from salt sensors. After calibration, measured maximum frequency 2.57%. Measurement results have successfully...

In this paper, an ultraviolet (UV) light intensity monitor was newly fabricated for personally wearable devices of monitoring environmental UV intensity. It realized by using a sensor and proposed transducer. The transducer can linearly convert into output duty cycle. to cycle conversion less susceptible noise than the analog voltage. addition, calibratable technique also solve intrinsic nonlinearity resistance monitor's operational amplifier switches. All functions were validated...

In this paper, a CMOS digitized silicon condenser microphone for acoustic applications is newly proposed. The proposed attractive due to the fact that sensor and all circuits are robustly compactly integrated. Another innovation of it could be operated without charge pump circuits. Thus, can performed at same power supply. Based upon 0.35 μ m 2P4M technology with 3 V supply, measurement results have successfully verified correct function performance microphone. area 1444 × 1383 μm <sup...

In this paper, a calibrated transducer CMOS circuit for water turbidity monitoring is proposed. The output signal pulse stream. It can be easily broadcast over various digital transmission media. addition, the proposed calibration method reduce nonlinear errors arising from sensors. of 8-1011 nephelometric units corresponded to frequency range 25.3-22.3 kHz. After calibration, measured maximum error was 0.36%.

In this paper, a gas sensor and the proposed calibration chip are presented. For commercially available MG811 CO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> is used. The output of was inputted to chip, signal pulse stream with its frequency corresponding concentration. All functions have been validated experimentally. After calibration, concentration range 426-1359 ppm corresponded 285-242 kHz. measured maximum error 1.3%.

In this paper, a CMOS liquid level to frequency converter with calibration circuits for detecting of intravenous drip is newly proposed. A technique proposed in the work. Another innovation that outputs chip are directly digitized, they could be easily sent over wide range transmission media, such as PSN, radio, optical, IR, ultrasonic, and etc. Before performing circuits, maximum linear error 46.44% After calibration, reduced 2.04% The 32 steps, corresponding output 3.14 58.14 kHz. area 2 ×...

In this paper, a calibrated liquid level sensor transducer for detecting rainfall of botanic garden is newly proposed. The output signal pulse stream, it could be easily sent over wide range transmission media, such as package switch network, radio, optical, infrared, ultrasonic, and so on. Another innovation that calibration method proposed to adjust parameters calibrate various sensors. By collocating with has 3.97 123.34 mm, the corresponding frequency ranges from 3.12 57.25 kHz. After...

In this paper, a CMOS monolithic digitized light detector with noise insensitivity for monitoring applications is newly proposed. The proposed chip attractive due to the fact that analog processing circuits and sensor are integrated robustly compactly. output signal of pulse stream, it could be easily sent over wide range transmission media, such as package switch networks, radio, optical, infrared, ultrasonic, so forth. Unlike previous works, suitable at varied also applications. 15.5 2650...

In this paper, a CMOS monolithic digitized light transducer with calibration technique for ambient sensor applications is newly proposed. The output signal of the proposed pulse stream that it could be easily sent over wide range transmission media, such as package switch network, radio, optical, infra red, ultrasonic, etc. Another innovation enhances and calibrates linear error among arrays dynamic frequency range. chip ranges from 7.5 to 1.873 MHz 108 dB. Before performing technique,...

This paper proposes a complementary metal-oxide-semiconductor (CMOS) seawater-salinity-to-digital converter for Internet of Things (IoT) applications in fish farms. In contrast to previous studies, the proposed not only is suitable processing seawater salinity but also has immunity environmental low-frequency noise. Another innovation that it can be easily delivered through transmission media before IoT. The performance and functions were successfully verified measurements. measured range...

In this paper, a novel complementary metal-oxide- semiconductor fish spoilage detector is proposed as an application of Internet Things (IoT) in markets. The analog processing circuits were successfully used for detecting the freshness swordfish. can be low cost and easy-to-use alternative housewives or IoT applications Moreover, directly delivered through transmission media devices because its digitized output. functions performance evaluated validated measurements. measured resistance chip...

SUMMARY In this paper, a 12‐bit multi‐channel dual‐mode successive approximation ADC for PMBus devices is newly proposed. The proposed data converter attractive because all the requirements of devices, which are high resolution, low‐cost, dual‐mode, and multi‐channel, successfully matched. measurement results, functions performance verified confirmed to be applied on devices. area chip 1.64 × 1.56 mm 2 , measured power consumption including digital output buffers 1.683 mW. suitable...

In this paper, a CMOS intelligent light sensing chip for automatic brightness tuning applications is newly proposed. The proposed attractive due to the fact that analog processing circuits and sensors are integrated. This paper proposes single solution achieve tuning. By following user's requirements, can collocate with various DC-DC converters fit different artificial sources. Besides, current-controlling pulse-width -modulation circuit have widely adjustable duty cycle. range from 10% 95%....

In this paper, a CMOS monolithic calibrated position-sensitive detector (PSD) for detecting light-spot position applications is newly proposed. A calibration technique proposed in work. With the circuits, chip successfully detects of small light real environment. Before performing maximum linear error 54.55%. After calibration, can be reduced to 3%. The dynamic range spot 40 dB. area 2.87 × 2.72 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...

In this paper, an automatic light monitoring system with light-to-frequency converter for flower planting is newly proposed. Based on the requirements planting, proposed thus analyzed and designed. Besides, designed transducer, which implemented as a converter, attractive due to that digitized signal produced without realizing analog digital converter. Hence, hardware cost could be reduced. All functions performance of are successfully proven through measurement results. The rather suitable...

In this paper, a CMOS readout circuit with frequency optimization for microphone sensor arrays is newly proposed. The proposed attractive due to that all the analog block circuits are robust and compact be integrated. Based upon device parameters of 0.35 μm 2P4M technology 3 V power supply, functions performance front-end silicon condenser microphones successfully proven through measurements. area 1142 × 1305 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...