Surface acoustic wave （SAW） devices have been widely used in different fields and will continue to be of great importance in the foreseeable future. These devices are compact, cost efficient, easy to fabricate, and ...Surface acoustic wave （SAW） devices have been widely used in different fields and will continue to be of great importance in the foreseeable future. These devices are compact, cost efficient, easy to fabricate, and have a high performance, among other advantages. SAW devices can work as filters, signal processing units, sensors and actuators. They can even work without batteries and operate under harsh environments. In this review, the operating principles of SAW sensors, including temperature sensors, pressure sensors, humidity sensors and biosensors, will be discussed. Several examples and related issues will be presented. Technological trends and future developments will also be discussed.展开更多
Wireless Sensor Network （WSN） is characterized by the dense deployment of sensor nodes that continuously observe physical phenomenon. The main advantages of WSN include its low cost, rapid deployment, self-organizat...Wireless Sensor Network （WSN） is characterized by the dense deployment of sensor nodes that continuously observe physical phenomenon. The main advantages of WSN include its low cost, rapid deployment, self-organization, and fault tolerance. WSN has received tremendous interests of various research communities,展开更多
The development of sustainable biomaterials has recently attracted great interest in the fields of flexible electronics and biosensing hydrogels.Hydrogels are a class of three-dimensional spatial network structure,and...The development of sustainable biomaterials has recently attracted great interest in the fields of flexible electronics and biosensing hydrogels.Hydrogels are a class of three-dimensional spatial network structure,and their structure and shape can exhibit reversible or noticeable responses to various stimuli,making them a popular choice for flexible electronic materials in recent years.Acrylic hydrogels,which possess a rich carboxylate network,can provide significant sensing and actuation properties to the hydrogels.They are often synthesized through the co-polymerization of their monomers and cross-linking agents,and they can be combined with naturally occurring biopolymers such as cellulose and chitosan to enhance biocompatibility.In this paper,we re-view the compounding methods and preparation process technologies of functionalized acrylic hydrogels and the application of polyacrylic acid(PAA)bioproducts in various fields.Finally,we review the current challenges and future directions for acrylic hydrogel prepared sensors and their applications.展开更多
Outcome based Education(OBE)emphasizes“student-centered,output-oriented”continuous improvement to meet the needs of students to acquire knowledge and develop abilities.The result orientation of the existing“Sensor ...Outcome based Education(OBE)emphasizes“student-centered,output-oriented”continuous improvement to meet the needs of students to acquire knowledge and develop abilities.The result orientation of the existing“Sensor principle and application”course teaching reform emphasizes the understanding and application of sensor principle,mastering the principle of language rules,object-oriented programming method and thinking mode.The teaching reform of this course is based on the concept of OBE,focusing on the combination of sensor principles and students’majors,and guiding students to apply object-oriented development tools reasonably and efficiently in related professional engineering.Comprehensive projects should be introduced into practical teaching to appropriately increase the workload and difficulty of practical teaching and cultivate students’awareness and ability of teamwork.Solve the“pain points”and“blocking points”existing in the curriculum,so as to combine the curriculum with talent training.The results of practical application show that the students’engineering application ability is improved and they can complete the comprehensive practical project well.展开更多
“Sensor Principle and Application”is a compulsory professional course for Internet of Things engineering,electronic information engineering,intelligent perception and other majors.In view of the pain points existing...“Sensor Principle and Application”is a compulsory professional course for Internet of Things engineering,electronic information engineering,intelligent perception and other majors.In view of the pain points existing in the teaching of this course,a series of innovative measures are put forward:integrating and updating the teaching content,adopting mixed teaching mode and innovative experimental methods,digging deeply into the curriculum ideology and politics,and building a multiple assessment and evaluation system,so as to comprehensively improve the learning effect of students and enhance their practical innovation ability and comprehensive quality.In order to promote the ideological and political teaching reform of the sensor Principle and application course,the research group combined the training requirements of engineering certification for students and the characteristics of application-oriented undergraduate students,with education moral education as the fundamental goal and task,to cultivate students’sense of innovation and feelings of home and country as the starting point,clear teaching objectives,use a variety of teaching methods,fully tap the integration point of moral education in the course,and optimize the assessment method.The ideological and political construction of professional courses will stimulate young students’confidence in the system,theory,road and culture to a greater extent,and train students to become application-oriented technical talents who love the Party,love the country and dare to innovate.展开更多
Traditional wireless sensor networks(WSNs)are not suitable for rough terrains that are difficult or impossible to access by humans.Smart dust is a technology that works with the combination of many tiny sensors which ...Traditional wireless sensor networks(WSNs)are not suitable for rough terrains that are difficult or impossible to access by humans.Smart dust is a technology that works with the combination of many tiny sensors which is highly useful for obtaining remote sensing information from rough terrains.The tiny sensors are sprinkled in large numbers on rough terrains using airborne distribution through drones or aircraftwithout manually setting their locations.Although it is clear that a number of remote sensing applications can benefit from this technology,but the small size of smart dust fundamentally restricts the integration of advanced hardware on tiny sensors.This raises many challenges including how to estimate the location of events sensed by the smart dusts.Existing solutions on estimating the location of events sensed by the smart dusts are not suitable for monitoring rough terrains as these solutions depend on relay sensors and laser patterns which have their own limitations in terms of power constraint and uneven surfaces.The study proposes a novel machine learning based localization algorithm for estimating the location of events.The approach utilizes timestamps(time of arrival)of sensed events received at base stations by assembling them into a multidimensional vector and input to a machine learning classifier for estimating the location.Due to the unavailability of real smart dusts,we built a simulator for analysing the accuracy of the proposed approach formonitoring forest fire.The experiments on the simulator show reasonable accuracy of the approach.展开更多
A novel fiber Bragg grating with triangular spectrum is presented. A strain sensor based on this fiber grating is proposed. Experiments showed that the sensor has advantages of high sensitivity, wider measuring range ...A novel fiber Bragg grating with triangular spectrum is presented. A strain sensor based on this fiber grating is proposed. Experiments showed that the sensor has advantages of high sensitivity, wider measuring range and immunity to fluctuation of the light source power.展开更多
基金supported by the National Natural Science Foundation of China(Nos.60936002,61025021,61434001,61574083)the State Key Development Program for Basic Research of China(No.2015CB352100)+2 种基金the National Key Project of Science and Technology(No.2011ZX02403-002)the Special Fund for Agroscientific Research in the Public Interest of China(No.201303107)additionally supported by the Postdoctoral Fellowship(PDF)program of the Natural Sciences and Engineering Research Council(NSERC)of Canada and the China Postdoctoral Science Foundation(CPSF)
文摘Surface acoustic wave （SAW） devices have been widely used in different fields and will continue to be of great importance in the foreseeable future. These devices are compact, cost efficient, easy to fabricate, and have a high performance, among other advantages. SAW devices can work as filters, signal processing units, sensors and actuators. They can even work without batteries and operate under harsh environments. In this review, the operating principles of SAW sensors, including temperature sensors, pressure sensors, humidity sensors and biosensors, will be discussed. Several examples and related issues will be presented. Technological trends and future developments will also be discussed.
文摘Wireless Sensor Network （WSN） is characterized by the dense deployment of sensor nodes that continuously observe physical phenomenon. The main advantages of WSN include its low cost, rapid deployment, self-organization, and fault tolerance. WSN has received tremendous interests of various research communities,
基金supported by Young Scientists Fund of the National Natural Science Foundation of China(No.32101459)Jiangsu Agricultural Science and Technology Innovation Fund(No.CX(22)3171)Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD).
文摘The development of sustainable biomaterials has recently attracted great interest in the fields of flexible electronics and biosensing hydrogels.Hydrogels are a class of three-dimensional spatial network structure,and their structure and shape can exhibit reversible or noticeable responses to various stimuli,making them a popular choice for flexible electronic materials in recent years.Acrylic hydrogels,which possess a rich carboxylate network,can provide significant sensing and actuation properties to the hydrogels.They are often synthesized through the co-polymerization of their monomers and cross-linking agents,and they can be combined with naturally occurring biopolymers such as cellulose and chitosan to enhance biocompatibility.In this paper,we re-view the compounding methods and preparation process technologies of functionalized acrylic hydrogels and the application of polyacrylic acid(PAA)bioproducts in various fields.Finally,we review the current challenges and future directions for acrylic hydrogel prepared sensors and their applications.
基金School-level Education Reform Project in 2024:Thoughts and Exploration on Ideological and Political Teaching Reform of“Sensor Principle and Application”Course under OBE Concept(Youth Project 66).
文摘Outcome based Education(OBE)emphasizes“student-centered,output-oriented”continuous improvement to meet the needs of students to acquire knowledge and develop abilities.The result orientation of the existing“Sensor principle and application”course teaching reform emphasizes the understanding and application of sensor principle,mastering the principle of language rules,object-oriented programming method and thinking mode.The teaching reform of this course is based on the concept of OBE,focusing on the combination of sensor principles and students’majors,and guiding students to apply object-oriented development tools reasonably and efficiently in related professional engineering.Comprehensive projects should be introduced into practical teaching to appropriately increase the workload and difficulty of practical teaching and cultivate students’awareness and ability of teamwork.Solve the“pain points”and“blocking points”existing in the curriculum,so as to combine the curriculum with talent training.The results of practical application show that the students’engineering application ability is improved and they can complete the comprehensive practical project well.
基金supported by the School-level Education Reform Project in 2024:Thoughts and Exploration on Ideological and Political Teaching Reform of”Sensor Principle and Application”Course under OBE Concept(Project number:2024JGQN03).
文摘“Sensor Principle and Application”is a compulsory professional course for Internet of Things engineering,electronic information engineering,intelligent perception and other majors.In view of the pain points existing in the teaching of this course,a series of innovative measures are put forward:integrating and updating the teaching content,adopting mixed teaching mode and innovative experimental methods,digging deeply into the curriculum ideology and politics,and building a multiple assessment and evaluation system,so as to comprehensively improve the learning effect of students and enhance their practical innovation ability and comprehensive quality.In order to promote the ideological and political teaching reform of the sensor Principle and application course,the research group combined the training requirements of engineering certification for students and the characteristics of application-oriented undergraduate students,with education moral education as the fundamental goal and task,to cultivate students’sense of innovation and feelings of home and country as the starting point,clear teaching objectives,use a variety of teaching methods,fully tap the integration point of moral education in the course,and optimize the assessment method.The ideological and political construction of professional courses will stimulate young students’confidence in the system,theory,road and culture to a greater extent,and train students to become application-oriented technical talents who love the Party,love the country and dare to innovate.
基金This research is supported by Universiti Brunei Darussalam(UBD)under FIC allied research grant program.
文摘Traditional wireless sensor networks(WSNs)are not suitable for rough terrains that are difficult or impossible to access by humans.Smart dust is a technology that works with the combination of many tiny sensors which is highly useful for obtaining remote sensing information from rough terrains.The tiny sensors are sprinkled in large numbers on rough terrains using airborne distribution through drones or aircraftwithout manually setting their locations.Although it is clear that a number of remote sensing applications can benefit from this technology,but the small size of smart dust fundamentally restricts the integration of advanced hardware on tiny sensors.This raises many challenges including how to estimate the location of events sensed by the smart dusts.Existing solutions on estimating the location of events sensed by the smart dusts are not suitable for monitoring rough terrains as these solutions depend on relay sensors and laser patterns which have their own limitations in terms of power constraint and uneven surfaces.The study proposes a novel machine learning based localization algorithm for estimating the location of events.The approach utilizes timestamps(time of arrival)of sensed events received at base stations by assembling them into a multidimensional vector and input to a machine learning classifier for estimating the location.Due to the unavailability of real smart dusts,we built a simulator for analysing the accuracy of the proposed approach formonitoring forest fire.The experiments on the simulator show reasonable accuracy of the approach.
文摘A novel fiber Bragg grating with triangular spectrum is presented. A strain sensor based on this fiber grating is proposed. Experiments showed that the sensor has advantages of high sensitivity, wider measuring range and immunity to fluctuation of the light source power.
