Pub Date : 2015-12-01DOI: 10.1109/ICSENST.2015.7438393
Y. Chan, Min-Sheng Liao, Chien-Hao Wang, Yeun-Chung Lee, Joe-Air Jiang
Currently, Internet of Things (IoT) has become a hot issue. For agriculture, IoT techniques bring many advantages, such as lowering the time consumed and the manpower required by real time data collection. Taiwan is one of the main orchid exporters in the world, and orchid export accounts for over 70% of the total floral export in Taiwan, and the species of phalaenopsis accounts for 60 % of the floral export. In a previous study, the IoT technique was utilized to automatically measure environmental factors and orchid leaf traits. An automatic image collecting system and an image processing method were employed to calculate the leaf area and the growth rate of the leaf area which was positively related to the blooming quality. However, when calculating the leaf area, the overlapping leaves caused inaccurate results. To solve this problem, this paper proposes a method to repaint the overlapped area. The leaves of orchids are symmetrical, and this feature is utilized to obtain the overlapped area and repaint the area. Finally, two data sets of processed images are collected to verify the proposed method. This paper provides an effective method of repainting overlapped leaf areas. Using the proposed method and the leaf area estimation method can reduce the error caused by leaf overlapping and increase the accuracy of leaf area estimation and growth rate calculation.
{"title":"Image repainted method of overlapped leaves for orchid leaf area estimation","authors":"Y. Chan, Min-Sheng Liao, Chien-Hao Wang, Yeun-Chung Lee, Joe-Air Jiang","doi":"10.1109/ICSENST.2015.7438393","DOIUrl":"https://doi.org/10.1109/ICSENST.2015.7438393","url":null,"abstract":"Currently, Internet of Things (IoT) has become a hot issue. For agriculture, IoT techniques bring many advantages, such as lowering the time consumed and the manpower required by real time data collection. Taiwan is one of the main orchid exporters in the world, and orchid export accounts for over 70% of the total floral export in Taiwan, and the species of phalaenopsis accounts for 60 % of the floral export. In a previous study, the IoT technique was utilized to automatically measure environmental factors and orchid leaf traits. An automatic image collecting system and an image processing method were employed to calculate the leaf area and the growth rate of the leaf area which was positively related to the blooming quality. However, when calculating the leaf area, the overlapping leaves caused inaccurate results. To solve this problem, this paper proposes a method to repaint the overlapped area. The leaves of orchids are symmetrical, and this feature is utilized to obtain the overlapped area and repaint the area. Finally, two data sets of processed images are collected to verify the proposed method. This paper provides an effective method of repainting overlapped leaf areas. Using the proposed method and the leaf area estimation method can reduce the error caused by leaf overlapping and increase the accuracy of leaf area estimation and growth rate calculation.","PeriodicalId":375376,"journal":{"name":"2015 9th International Conference on Sensing Technology (ICST)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114503576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-12-01DOI: 10.1109/ICSENST.2015.7438509
K. A. Ahmad, Mohamad Faizal Abd Rahman, A. A. Manaf, M. Yaacob
An acoustic transducer arrays was designed and developed for imaging application. There were two type of design and namely as single linear transducer array and dual linear transducer array. The transducer array has been break up into three different pitch element designs, 0.5 mm, 0.8 mm and 1.5 mm. The acoustic transducer array has been developed using polyvinylidene fluoride (PVDF) sheet and deposited on printed circuit board (PCB). The sensitivity of all transducers are evaluated and analysed. The setup measurement are based on reciprocity calibration method. The sensitivity of acoustic transducer array based on pitch element has shown in the result. The 1.5 mm pitch element gap has more sensitivity in 28 dB compare to 0.5 mm.
设计并研制了一种用于成像的声换能器阵列。有两种设计，即单线性换能器阵列和双线性换能器阵列。换能器阵列分为三种不同的间距元件设计，0.5 mm, 0.8 mm和1.5 mm。利用聚偏氟乙烯(PVDF)片材研制了一种声换能器阵列，并将其沉积在印刷电路板(PCB)上。对所有传感器的灵敏度进行了评估和分析。设置测量基于互易校准法。结果表明了基于基音单元的声换能器阵列的灵敏度。与0.5 mm相比，1.5 mm间距元件在28 dB时具有更高的灵敏度。
{"title":"Design and development of acoustic transducer array using PVDF for imaging application","authors":"K. A. Ahmad, Mohamad Faizal Abd Rahman, A. A. Manaf, M. Yaacob","doi":"10.1109/ICSENST.2015.7438509","DOIUrl":"https://doi.org/10.1109/ICSENST.2015.7438509","url":null,"abstract":"An acoustic transducer arrays was designed and developed for imaging application. There were two type of design and namely as single linear transducer array and dual linear transducer array. The transducer array has been break up into three different pitch element designs, 0.5 mm, 0.8 mm and 1.5 mm. The acoustic transducer array has been developed using polyvinylidene fluoride (PVDF) sheet and deposited on printed circuit board (PCB). The sensitivity of all transducers are evaluated and analysed. The setup measurement are based on reciprocity calibration method. The sensitivity of acoustic transducer array based on pitch element has shown in the result. The 1.5 mm pitch element gap has more sensitivity in 28 dB compare to 0.5 mm.","PeriodicalId":375376,"journal":{"name":"2015 9th International Conference on Sensing Technology (ICST)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123543632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-12-01DOI: 10.1109/ICSENST.2015.7438447
Alexander C. Amies, C. Pretty, G. Rodgers, J. Chase
Radar is a technique commonly used to determine the instantaneous distance between moving objects. This paper proposes the application of a frequency-modulated continuous wave technique for the purpose of drift sensing in a structural health monitoring context. This context requires the measurement of interstorey drift ratios to determine the damage to a structure. Any structural health monitoring system must be able to detect interstorey displacement accurately enough to ensure that any potentially damaging events are detected. The primary motivation for the development of this technique is to negate the limitations of current drift sensing methods (such as accelerometers and line-scan cameras). The proposed system is simulated, and it is found that with sufficiently large frequency sweep bandwidth, errors in displacement tracking can be as low as 0.26% of the actual displacement, with a minimum detectable displacement of 0.1%. These results justify the further development of a hardware prototype.
{"title":"A continuous wave radar technique for structural health monitoring","authors":"Alexander C. Amies, C. Pretty, G. Rodgers, J. Chase","doi":"10.1109/ICSENST.2015.7438447","DOIUrl":"https://doi.org/10.1109/ICSENST.2015.7438447","url":null,"abstract":"Radar is a technique commonly used to determine the instantaneous distance between moving objects. This paper proposes the application of a frequency-modulated continuous wave technique for the purpose of drift sensing in a structural health monitoring context. This context requires the measurement of interstorey drift ratios to determine the damage to a structure. Any structural health monitoring system must be able to detect interstorey displacement accurately enough to ensure that any potentially damaging events are detected. The primary motivation for the development of this technique is to negate the limitations of current drift sensing methods (such as accelerometers and line-scan cameras). The proposed system is simulated, and it is found that with sufficiently large frequency sweep bandwidth, errors in displacement tracking can be as low as 0.26% of the actual displacement, with a minimum detectable displacement of 0.1%. These results justify the further development of a hardware prototype.","PeriodicalId":375376,"journal":{"name":"2015 9th International Conference on Sensing Technology (ICST)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123194271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-12-01DOI: 10.1109/ICSENST.2015.7438399
S. Zahurul, N. Mariun, M. L. Othman, H. Hizam, I. Abidin, Arash Toudeshki
Temperature and solar irradiance are the two dominating cardinals that determine the electrical performance of Photovoltaic (PV) module. In this paper, an experiment is conducted considering Amorphous Silicon (A-Si) PV module in both indoor and outdoor condition to investigate the temperature effect on A-Si module's performance in terms of efficiency and output power through an automatic resistor selection system. The experimental result shows that A-Si PV module has small temperature coefficient effect; however it has higher effect on solar radiation coefficient. A comparison analysis is evaluated with different models to validate the experimental data.
{"title":"Ambient temperature effect on Amorphous Silicon (A-Si) Photovoltaic module using sensing technology","authors":"S. Zahurul, N. Mariun, M. L. Othman, H. Hizam, I. Abidin, Arash Toudeshki","doi":"10.1109/ICSENST.2015.7438399","DOIUrl":"https://doi.org/10.1109/ICSENST.2015.7438399","url":null,"abstract":"Temperature and solar irradiance are the two dominating cardinals that determine the electrical performance of Photovoltaic (PV) module. In this paper, an experiment is conducted considering Amorphous Silicon (A-Si) PV module in both indoor and outdoor condition to investigate the temperature effect on A-Si module's performance in terms of efficiency and output power through an automatic resistor selection system. The experimental result shows that A-Si PV module has small temperature coefficient effect; however it has higher effect on solar radiation coefficient. A comparison analysis is evaluated with different models to validate the experimental data.","PeriodicalId":375376,"journal":{"name":"2015 9th International Conference on Sensing Technology (ICST)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114412768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-12-01DOI: 10.1109/ICSENST.2015.7438424
J. Ascorbe, J. Corres, I. Matías, F. Arregui
Here we present a new structure to fabricate optical fiber sensors. This structure consists on an etched single mode optical fiber coated with a thin film of a semiconductor material by means of sputtering. The optical fiber was etched with hydrofluoric acid until it reaches 19 μm of diameter. Then it was attached to a U-holder and coated with the indium oxide nanocoating. The thin film generates a lossy mode resonance and when the relative humidity increases, the wavelength of the resonance shifts. Changes of 30% to 80% RH have been applied to the device obtaining a wavelength shift of 12 nm.
{"title":"Humidity sensor based on lossy mode resonances on an etched single mode fiber","authors":"J. Ascorbe, J. Corres, I. Matías, F. Arregui","doi":"10.1109/ICSENST.2015.7438424","DOIUrl":"https://doi.org/10.1109/ICSENST.2015.7438424","url":null,"abstract":"Here we present a new structure to fabricate optical fiber sensors. This structure consists on an etched single mode optical fiber coated with a thin film of a semiconductor material by means of sputtering. The optical fiber was etched with hydrofluoric acid until it reaches 19 μm of diameter. Then it was attached to a U-holder and coated with the indium oxide nanocoating. The thin film generates a lossy mode resonance and when the relative humidity increases, the wavelength of the resonance shifts. Changes of 30% to 80% RH have been applied to the device obtaining a wavelength shift of 12 nm.","PeriodicalId":375376,"journal":{"name":"2015 9th International Conference on Sensing Technology (ICST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115417369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-12-01DOI: 10.1109/ICSENST.2015.7438379
Y. Kho, N. Chong, Refik Caglar Kizilirmak
This paper presents a design concept and implementation of an indoor passive tracking system that utilises an array of Wi-Fi transceivers, and without any electronic device or tag attached to the object being tracked. Such tracking is made possible by exploiting the fundamental characteristic of signal attenuation due to object blocking, i.e. shadowing, that is prevalent in a typical wireless communication system. By detecting significant signal attenuation in the system (i.e. by measuring the received signal strength value), it is possible to infer that an object is blocking the line-of-sight (LOS) link in a transceiver set and therefore transforming the existing hardware configuration into a proximity sensors network.
{"title":"A passive wireless tracking system for indoor assistive monitoring","authors":"Y. Kho, N. Chong, Refik Caglar Kizilirmak","doi":"10.1109/ICSENST.2015.7438379","DOIUrl":"https://doi.org/10.1109/ICSENST.2015.7438379","url":null,"abstract":"This paper presents a design concept and implementation of an indoor passive tracking system that utilises an array of Wi-Fi transceivers, and without any electronic device or tag attached to the object being tracked. Such tracking is made possible by exploiting the fundamental characteristic of signal attenuation due to object blocking, i.e. shadowing, that is prevalent in a typical wireless communication system. By detecting significant signal attenuation in the system (i.e. by measuring the received signal strength value), it is possible to infer that an object is blocking the line-of-sight (LOS) link in a transceiver set and therefore transforming the existing hardware configuration into a proximity sensors network.","PeriodicalId":375376,"journal":{"name":"2015 9th International Conference on Sensing Technology (ICST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116697046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-12-01DOI: 10.1109/ICSENST.2015.7438360
J. Yeh, K. Wang, Z. Salcic, Karthik Kannappan, A. Partridge
There is a growing need for new biosensing technologies that are more rapid and convenient to use for onsite sensing. Impedance-based electrochemical sensor is a promising candidate due to simplicity of its sensing mechanism. However, like other emerging biosensors, specificity, sensitivity, and reliability are major obstacles that limit their use in real-life applications. Electrode geometry and 3D shape design optimization have been popular research directions for improved sensor performance. The aim of this study is to develop a finite element modelling approach that allows calculation of electrode impedance for different electrode shapes under standard biological test medium. In addition, a method for comparing sensor sensitivity is also developed using bacterial target as case study. Impedance simulations were performed for different electrode shapes, namely flat, ridge, and trough. The effects of target binding on solution conductivity and diffusion were simulated. It was found trough shaped electrode showed the greatest change in diffusion impedance upon target recognition. However, different shapes gave maximum change in solution impedance depending on the position of bound target.
{"title":"Modelling impedance for 3D impedimetric biosensor","authors":"J. Yeh, K. Wang, Z. Salcic, Karthik Kannappan, A. Partridge","doi":"10.1109/ICSENST.2015.7438360","DOIUrl":"https://doi.org/10.1109/ICSENST.2015.7438360","url":null,"abstract":"There is a growing need for new biosensing technologies that are more rapid and convenient to use for onsite sensing. Impedance-based electrochemical sensor is a promising candidate due to simplicity of its sensing mechanism. However, like other emerging biosensors, specificity, sensitivity, and reliability are major obstacles that limit their use in real-life applications. Electrode geometry and 3D shape design optimization have been popular research directions for improved sensor performance. The aim of this study is to develop a finite element modelling approach that allows calculation of electrode impedance for different electrode shapes under standard biological test medium. In addition, a method for comparing sensor sensitivity is also developed using bacterial target as case study. Impedance simulations were performed for different electrode shapes, namely flat, ridge, and trough. The effects of target binding on solution conductivity and diffusion were simulated. It was found trough shaped electrode showed the greatest change in diffusion impedance upon target recognition. However, different shapes gave maximum change in solution impedance depending on the position of bound target.","PeriodicalId":375376,"journal":{"name":"2015 9th International Conference on Sensing Technology (ICST)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122034777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-12-01DOI: 10.1109/ICSENST.2015.7438425
K. Shibasato, Chiaki Tateyama, H. Ohtsuka, Y. Shimada
The Japanese government conducted measures for persons with disabilities in 2013 and they reported that about 2.2 million of challenged children aged 17 or younger live in Japan. Those children cannot communicate with others without somebody's help because of severe physical disabilities and they are wholeheartedly keen to become a member of a society and crave a device/application to communicate with other people. Indeed, there are many models of computer and tablet produced in Japan, however, quite small number of products are designed for the challenged children because difficulties of the children are unique and each assistive device should be designed individually. Therefore it's not easy to produce common-use devices or applications, and it's not easy for company to gain a profit from such special devices/applications. Finally, few types of assistive product are available even though a lot of challenged children desire such assistive device and application to be produced. In this paper, application by gaze interaction on a tablet computer was proposed and examined the performance and effectiveness of this application through trial classes in special-needs school. Results of experiment through trial classes suggested that the proposed application gained high appreciation from teachers of special-need school.
{"title":"Implementation of application by gaze interaction on a tablet computer for challenged people","authors":"K. Shibasato, Chiaki Tateyama, H. Ohtsuka, Y. Shimada","doi":"10.1109/ICSENST.2015.7438425","DOIUrl":"https://doi.org/10.1109/ICSENST.2015.7438425","url":null,"abstract":"The Japanese government conducted measures for persons with disabilities in 2013 and they reported that about 2.2 million of challenged children aged 17 or younger live in Japan. Those children cannot communicate with others without somebody's help because of severe physical disabilities and they are wholeheartedly keen to become a member of a society and crave a device/application to communicate with other people. Indeed, there are many models of computer and tablet produced in Japan, however, quite small number of products are designed for the challenged children because difficulties of the children are unique and each assistive device should be designed individually. Therefore it's not easy to produce common-use devices or applications, and it's not easy for company to gain a profit from such special devices/applications. Finally, few types of assistive product are available even though a lot of challenged children desire such assistive device and application to be produced. In this paper, application by gaze interaction on a tablet computer was proposed and examined the performance and effectiveness of this application through trial classes in special-needs school. Results of experiment through trial classes suggested that the proposed application gained high appreciation from teachers of special-need school.","PeriodicalId":375376,"journal":{"name":"2015 9th International Conference on Sensing Technology (ICST)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116997960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-12-01DOI: 10.1109/ICSENST.2015.7438382
V. Putz, T. Buchegger, S. Apostol, T. Voglhuber-Brunnmaier, J. Miethlinger, B. Zagar, R. K. Selvasankar
Pulsed Wave Velocimetry (PWV) is an ultrasonic technique for measuring velocity profiles in flowing liquids. With an earlier prototype, we already demonstrated its applicability to monitor the flow behavior of molten polypropylene with different additives in capillary dies. In this contribution, we present an improved measurement setup, which allows testing liquids with temperatures > 220°C using a large bandwidth ultrasound transducer (UT). The UT works at room temperature and is acoustically coupled to the melt using a wave guide. The setup comprises active cooling and enables long-time in-line measurement. In this contribution, we show results obtained in-line during the extrusion of polylactide (PLA) with glass fibers at various feed rates. Using the acquired data, methods to calculate acoustical properties like the speed of sound and the damping in melt are discussed.
{"title":"In-line flow measurement of molten PLA in capillary flow channels using ultrasound","authors":"V. Putz, T. Buchegger, S. Apostol, T. Voglhuber-Brunnmaier, J. Miethlinger, B. Zagar, R. K. Selvasankar","doi":"10.1109/ICSENST.2015.7438382","DOIUrl":"https://doi.org/10.1109/ICSENST.2015.7438382","url":null,"abstract":"Pulsed Wave Velocimetry (PWV) is an ultrasonic technique for measuring velocity profiles in flowing liquids. With an earlier prototype, we already demonstrated its applicability to monitor the flow behavior of molten polypropylene with different additives in capillary dies. In this contribution, we present an improved measurement setup, which allows testing liquids with temperatures > 220°C using a large bandwidth ultrasound transducer (UT). The UT works at room temperature and is acoustically coupled to the melt using a wave guide. The setup comprises active cooling and enables long-time in-line measurement. In this contribution, we show results obtained in-line during the extrusion of polylactide (PLA) with glass fibers at various feed rates. Using the acquired data, methods to calculate acoustical properties like the speed of sound and the damping in melt are discussed.","PeriodicalId":375376,"journal":{"name":"2015 9th International Conference on Sensing Technology (ICST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122710215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-12-01DOI: 10.1109/ICSENST.2015.7438420
Lin Li, Xiaoxin Wang, Hongli Hu, XingyueYang
Rotational speed monitoring is a critical part in the automatic control system of large generators and centrifugal machine. This article designed a rotational speed measurement system using electrostatic sensors and a correlation signal processing method. Two categories were utilized for the speed measurement-two sensors using cross-correlation method and a single sensor using auto-correlation method. Meanwhile, further signal processing methods were adopted to improve the accuracy of measurement results. Experimental tests were carried out on a laboratory-scale test rig under a rotational speed range from 400r/min to 3800r/min. The results show that the linearity of cross-correlation method and auto-correlation under experimental conditions is 1.53% and 0.52% correspondingly. In the same time, the auto-correlation method has a higher accuracy than cross-correlation method with the relative error lower than 1%.
{"title":"Speed condition monitoring of rotating machinery using electrostatic method","authors":"Lin Li, Xiaoxin Wang, Hongli Hu, XingyueYang","doi":"10.1109/ICSENST.2015.7438420","DOIUrl":"https://doi.org/10.1109/ICSENST.2015.7438420","url":null,"abstract":"Rotational speed monitoring is a critical part in the automatic control system of large generators and centrifugal machine. This article designed a rotational speed measurement system using electrostatic sensors and a correlation signal processing method. Two categories were utilized for the speed measurement-two sensors using cross-correlation method and a single sensor using auto-correlation method. Meanwhile, further signal processing methods were adopted to improve the accuracy of measurement results. Experimental tests were carried out on a laboratory-scale test rig under a rotational speed range from 400r/min to 3800r/min. The results show that the linearity of cross-correlation method and auto-correlation under experimental conditions is 1.53% and 0.52% correspondingly. In the same time, the auto-correlation method has a higher accuracy than cross-correlation method with the relative error lower than 1%.","PeriodicalId":375376,"journal":{"name":"2015 9th International Conference on Sensing Technology (ICST)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125831693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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