Magnitude Versus Frequency Performance of Vibration Acceleration Sensor Based on Cymbal Transducer

2008 ◽  
pp. 226-229
Author(s):  
Deng Hua Li ◽  
Shu Hui Yang ◽  
Jing Min Gao ◽  
Yong Cheng Ma
Keyword(s):  
Acceleration Sensor ◽  
Vibration Acceleration ◽  
Cymbal Transducer

Magnitude Versus Frequency Performance of Vibration Acceleration Sensor Based on Cymbal Transducer

2008 ◽  
Vol 368-372 ◽  
pp. 226-229
Author(s):  
Deng Hua Li ◽  
Shu Hui Yang ◽  
Jing Min Gao ◽  
Yong Cheng Ma
Keyword(s):  
Piezoelectric Coefficient ◽  
Damping Coefficient ◽  
Voltage Sensitivity ◽  
Acceleration Sensor ◽  
Elastic Coefficient ◽  
Vibration Acceleration ◽  
Prestressing Force ◽  
Cymbal Transducer ◽  
Metal Ceramic ◽  
Nature Frequency

The magnitude versus frequency performance for a vibration acceleration sensor based on metal-ceramic piezocomposite transducer (cymbal) was studied in this paper. The results showed that the voltage sensitivity of this new sensor is as a function of not only the effective piezoelectric coefficient, d33 e, elastic coefficient, ky, and the resonance frequency, f0, of the cymbal transducer, but also the relative damping coefficient, ξ, of this new sensor. The relative damping coefficient, ξ, is also as a function of the capacitance, C0, of the cymbal transducer and a function of the mass, m, of the sensor, which is used as a prestressing force. The magnitude versus frequency plot for this vibration acceleration sensor was constructed. The results showed that the magnitude versus frequency performance of this new sensor changes as the relative damping coefficient, ξ, varies. The magnitude versus frequency performance is not dependent on the relative damping coefficient, ξ, when the ratio of operation frequency to the nature frequency, ω /ω0, is less than 0.2.

Research on the Voltage Sensitivity of Differential Cymbal Piezoelectric Vibration Acceleration Sensor

2014 ◽  
Vol 705 ◽  
pp. 208-213
Author(s):  
Hui Gao ◽  
Deng Hua Li ◽  
Bi Zheng Dong
Keyword(s):  
Experimental Data ◽  
Mathematical Model ◽  
Output Voltage ◽  
Structural Features ◽  
Order System ◽  
Voltage Sensitivity ◽  
Acceleration Sensor ◽  
Vibration Acceleration ◽  
Cymbal Transducer ◽  
Piezoelectric Vibration

To improve the sensor's output voltage sensitivity, two cymbals piezoelectric transducer are employed as the sensitive elements to form a differential cymbal piezoelectric vibration acceleration sensor. The structural features of the sensor are analyzed, second-order system mathematical model is established and the output voltage sensitivity of the sensor is also studied. The experimental results show that output voltage sensitivity of differential cymbals piezoelectric vibration acceleration sensor is two times of that of the sensor with single cymbal transducer. The experimental data agrees well with the theoretical analysis result.

On measuring key parameters of an electro-impulse deicing system

2018 ◽  
Vol 233 (6) ◽  
pp. 2321-2328 ◽  
Author(s):  
Qian Du ◽  
Chunling Zhu
Keyword(s):  
Measuring Method ◽  
Pulsed Current ◽  
Experimental Setup ◽  
Test Results ◽  
Peak Acceleration ◽  
Acceleration Sensor ◽  
Vibration Acceleration ◽  
Peak Current ◽  
Two Parameters ◽  
Piezoelectric Vibration

The peak current and vibration peak acceleration are two important parameters in the electroimpulse deicing system. Available data on two parameters are sparse. An experimental setup to measure the peak current and vibration peak acceleration in the electroimpulse deicing system is presented. The measurement is performed in the icing wind tunnel. Rogowski coil’s principle on pulsed current measurement is applied in the electroimpulse deicing discharge current circuit. It is found that calculated results agree with the measured trend. A piezoelectric vibration acceleration sensor is adopted to measure the vibration peak acceleration. Test results show that when the peak current varies linearly, the vibration peak acceleration increases with the increase of discharge voltages and its variation is approximately linear. The experimental results in the electroimpulse deicing system demonstrate that the proposed measuring method is accurate and reliable.

scholarly journals Self-Powered Acceleration Sensor Based on Multilayer Suspension Structure and TPU-RTV Film for Vibration Monitoring

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2763
Author(s):  
Xiaotao Han ◽  
Qiyuan Zhang ◽  
Junbin Yu ◽  
Jinsha Song ◽  
Zhengyang Li ◽  
...  
Keyword(s):  
Short Circuit ◽  
Mechanical Vibration ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Vibration Monitoring ◽  
Triboelectric Nanogenerator ◽  
Acceleration Sensor ◽  
Vibration Acceleration ◽  
Self Powered ◽  
Suspension Structure

In this paper, we designed a triboelectric acceleration sensor with excellent multiple parameters. To more easily detect weak vibrations, the sensor was founded on a multilayer suspension structure. To effectively improve the electrical properties of the sensor, a surface roughening and internal doping friction film, which was refined with a room temperature vulcanized silicone rubber (RTV) and some thermoplastic polyurethanes (TPU) powder in a certain proportion, was integrated into the structure. It was found that the optimization of the RTV film increases the open circuit voltage and short circuit current of the triboelectric nanogenerator (TENG) by 223% and 227%, respectively. When the external vibration acceleration is less than 4 m/s2, the sensitivity and linearity are 1.996 V/(m/s2) and 0.999, respectively. Additionally, when it is in the range between 4 m/s2 and 15 m/s2, those are 23.082 V/(m/s2) and 0.975, respectively. Furthermore, the sensor was placed in a simulated truck vibration environment, and its self-powered monitoring ability validated by experiments in real time. The results show that the designed sensor has strong practical value in the field of monitoring mechanical vibration acceleration.

The Characteristics of Low Frequency on Detecting Method via Strain Gages

2012 ◽  
Vol 482-484 ◽  
pp. 1161-1164
Author(s):  
Xiao Jun Li ◽  
Wen Ming Zhu ◽  
Yu Guo Wang ◽  
Yu Zhang
Keyword(s):  
Frequency Domain ◽  
High Frequency ◽  
Low Frequency ◽  
Sensor System ◽  
Strain Gages ◽  
Acceleration Sensor ◽  
Vibration Acceleration ◽  
Frequency Information ◽  
The One ◽  
Detecting Method

In order to find out the feasibility to obtain dynamics peculiarity in high frequency domain, the dynamic peculiarity on detecting method with strain gages is researched. By modeling and analyzing qualitatively, the characteristics of low frequency are indicated for strain gages sensor system. Comparing with the test signal difference between vibration acceleration sensor and strain gages sensor system at the three domain which are time, amplitude and frequency, the characteristics of low frequency are proved for the one. Therefore while detecting the high frequency dynamic signal with strain gages sensor system, the high frequency information is attenuated, the mostly spectrum information is lost.

Experimental Performance Evaluation of Vibration Monitoring Sensor Prototype Driven by Piezocomposite Vibration Energy Harvester Under Low Intensity Excitation Condition

2013 ◽  
Author(s):  
Kazuhiko Adachi ◽  
Tatsuya Sakamoto
Keyword(s):  
Energy Harvester ◽  
Rotating Machinery ◽  
Vibration Monitoring ◽  
Vibration Energy ◽  
Excitation Condition ◽  
Acceleration Sensor ◽  
Vibration Acceleration ◽  
Vibration Energy Harvester ◽  
Low Intensity ◽  
Monitoring Applications

In this study, we have developed a sensor prototype for vibration acceleration monitoring driven by the authors’ proposed vibration energy harvester. It uses a commercial LTC3588 energy harvesting chip with capacitors and the piezo-bimorph cantilever-type energy harvester consists of the surface bonded two Macro-Fiber Composites. The power consumption of the acceleration sensor was typically 1mW, and the driving current was typically 400 microamperes. For vibration condition monitoring applications of industrial rotating machinery, we assumed that the typical casing or pedestal vibration amplitude of the rotating machinery was 0.71 mm/sec rms according to ISO standard. This low intensity excitation condition was the input for experimental evaluation of the developed sensor prototype. The sensor prototype was able to measure the vibration acceleration of approximately 17 seconds under the vibration input of 0.013G (RMS) at approximately 56Hz every two minutes. Approximately 12% of the input of vibration energy was used for driving the acceleration sensor. Therefore, estimated overall energy transfer efficiency was about 12%. The experimental results indicate the feasibility of the sensor prototype driven by piezocomposite vibration energy harvester.

Design of Conditioning Circuit of Mining Vibration Acceleration Sensor

2013 ◽  
Vol 433-435 ◽  
pp. 225-228
Author(s):  
Xiao Dong Ji ◽  
Zi Xian Yang ◽  
Xin Ying Zhao ◽  
Guang Hui Xue ◽  
Miao Wu
Keyword(s):  
Coal Mine ◽  
Vibration Signal ◽  
Sensor Signal ◽  
Signal Conditioning ◽  
Acceleration Sensor ◽  
Vibration Acceleration ◽  
Equipment Acquisition ◽  
Harsh Conditions ◽  
Signal Conditioning Circuit ◽  
Conditioning Circuit

In order to adapt to the harsh conditions of the coal mine, according to the MA Verified standards, we developed a set of vibration acceleration sensor signal conditioning circuit of mining, used for picking up vibration signal in the coal mine. The conditioning circuit solve the vibration signal of large equipment acquisition problems in coal mine, and lay a good foundation for the research of coal mine equipment vibration signal.

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