Design of vibrating wire sensor signal acquisition board based on STM32

2016 ◽  
Author(s):  
Zhenyu Wu ◽  
Shenglan Liu ◽  
Meng Du ◽  
Qiang Li ◽  
Chengda Han ◽  
...  
Keyword(s):  
Signal Acquisition ◽  
Sensor Signal ◽  
Vibrating Wire

Improvement and Design of Single Coil Vibrating-Wire Sensor Signal Acquisition System Based on STM32

2014 ◽  
Vol 511-512 ◽  
pp. 764-769
Author(s):  
Suo Ying Mao ◽  
Jun Hua Zhao ◽  
Fang Fang Zhou
Keyword(s):  
Low Voltage ◽  
Frequency Measurement ◽  
Acquisition System ◽  
Signal Acquisition ◽  
Sensor Signal ◽  
Vibrating Wire ◽  
Soil Pressure ◽  
Single Coil ◽  
Voltage Feedback ◽  
Signal Normalization

Vibrating wire sensor signal acquisition system is widely used in the fields of water conservancy dam, slope, construction, mining and so on to measure osmotic pressure, soil pressure, strain and other physical quantities. This paper studies the single coil vibrating wire sensor signal acquisition system,which uses the STM32F103 core processor generating a low-voltage feedback PWM signal to excite vibrating wire with scanning frequency, after signal amplification, filtering and signal normalization through the frequency measurement module, and ultimately achieve frequency measurement. The system can improve the traditional vibrating wire acquisition instrument, so as to achieve fast and efficient and reliable long-lasting measurement. According to some simulation and designed circuit, the measured data and diagram can verify the feasibility of the method.

Study of the Metal Crack Propagation by Acoustic Emission Testing

2011 ◽  
Vol 105-107 ◽  
pp. 2179-2182
Author(s):  
Wei Min Zhang ◽  
Shu Xuan Liu ◽  
Yong Qiu ◽  
Cheng Feng Chen
Keyword(s):  
Acoustic Emission ◽  
Crack Propagation ◽  
Acquisition System ◽  
Signal Acquisition ◽  
Sensor Signal ◽  
Acoustic Emission Sensor ◽  
Axial Tension ◽  
Emission Testing ◽  
Acoustic Emission Testing ◽  
Signal Operating

Crack propagation is the main reason which leads to the invalidity of the metal components. A set of detecting equipment based on the acoustic emission method was designed, and it was mainly composed of acoustic emission sensor, signal operating circuits and signal acquisition system. Specimens of 16MnR material were manufactured and the static axial tension test of them was carried on. Acoustic emission signals from the specimen were detected by acoustic emission equipment by using piezoelectric ceramic sensor. Signal datum were acquired and operated by the acquisition system, as well as the acquisition program written for it. The final results has demonstrated that acoustic emission equipment designed for the test performed well in acquiring the signals induced by the metal crack propagation.

scholarly journals Accuracy-Energy Configurable Sensor Processor and IoT Device for Long-Term Activity Monitoring in Rare-Event Sensing Applications

2014 ◽  
Vol 2014 ◽  
pp. 1-16 ◽  
Author(s):  
Daejin Park ◽  
Jeonghun Cho
Keyword(s):  
Rare Event ◽  
Sensor Data ◽  
Event Generator ◽  
Signal Acquisition ◽  
Processing Unit ◽  
Sensor Signal ◽  
Single Chip ◽  
Sensing Applications ◽  
Tightly Coupled ◽  
Sensor Processor

A specially designed sensor processor used as a main processor in IoT (internet-of-thing) device for the rare-event sensing applications is proposed. The IoT device including the proposed sensor processor performs the event-driven sensor data processing based on an accuracy-energy configurable event-quantization in architectural level. The received sensor signal is converted into a sequence of atomic events, which is extracted by the signal-to-atomic-event generator (AEG). Using an event signal processing unit (EPU) as an accelerator, the extracted atomic events are analyzed to build the final event. Instead of the sampled raw data transmission via internet, the proposed method delays the communication with a host system until a semantic pattern of the signal is identified as a final event. The proposed processor is implemented on a single chip, which is tightly coupled in bus connection level with a microcontroller using a 0.18 μm CMOS embedded-flash process. For experimental results, we evaluated the proposed sensor processor by using an IR- (infrared radio-) based signal reflection and sensor signal acquisition system. We successfully demonstrated that the expected power consumption is in the range of 20% to 50% compared to the result of the basement in case of allowing 10% accuracy error.

scholarly journals EMI Susceptibility Issue in Analog Front-End for Sensor Applications

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Anna Richelli
Keyword(s):  
Analog Circuits ◽  
Crucial Role ◽  
Signal Acquisition ◽  
Sensor Signal ◽  
Sensory Signals ◽  
Sensor Applications ◽  
Front End ◽  
Analog Front End ◽  
Integrated Analog Circuits

The susceptibility to electromagnetic interferences of the analog circuits used in the sensor readout front-end is discussed. Analog circuits still play indeed a crucial role in sensor signal acquisition due to the analog nature of sensory signals. The effect of electromagnetic interferences has been simulated and measured in many commercial and integrated analog circuits; the main cause of the electromagnetic susceptibility is investigated and the guidelines to design high EMI immunity circuits are provided.

scholarly journals Passive in-vehicle driver breath alcohol detection using advanced sensor signal acquisition and fusion

2017 ◽  
Vol 18 (sup1) ◽  
pp. S31-S36 ◽  
Author(s):  
Jonas Ljungblad ◽  
Bertil Hök ◽  
Amin Allalou ◽  
Håkan Pettersson
Keyword(s):  
Signal Acquisition ◽  
Sensor Signal ◽  
Breath Alcohol
Sign in / Sign up

Export Citation Format

Share Document