Design And Development Of In-class Attention Measurement Tool Based On Sitting Posture

Learning analysis aims to acquire the data behind the behavior data,through the mining? processing and analysis of learner behavior data,to provide data reference for precision instruction;Although there are various “online” and “offline” data acquisition methods,but the “offline” data also faces problems such as difficulty in collecting and handling data.Recent studies have shown that there is a connection between the learner's sitting posture and the in-class attention.In order to solve the problem of "offline" data collection.Zhang Shuyi use some intelligent hardware and sensors designed a intelligent hardware based on the connection between sitting posture and attention.This equipment can measure the learners' in-class attention,but there are still several problems in the use of the equipment: whether the learner's classroom sitting posture is perfect,the tool can not detect the interference behavior of the learner standing?turning behavior,and the tool needs the router to provide the network environment,but the limitation of the number of terminals on the router,the tool can not be used in batches.That is,it can not really provide a more effective method to collect "offline" data.In order to solve the technical defects in the in-class attention measurement tool,this study attempts to refine the attention card system based on the embodied cognition theory and the cross-domain competition model,the classroom learner sitting posture as the intermediate measurement index.Refine the sitting posture type in the attention card system,optimize the sitting posture-attention algorithm.Analysis the advantages and disadvantages of existing communication technologies,select appropriate hardware,combining the "Master-Slave" multi-machine communication scheme,firstly design the in-class attention measurement tool(attention card)communication scheme,and then use 51 MCU,JY61 angle sensor,2.4G n RF2401 wireless transparent transmission module,STM32 MCU,ESP8266 WIFI communication module,complete attention card hardware development,One NET cloud platform as data storage,real-time monitoring platform.Finally,in the middle school classroom(exercise explanation,new class explanation),carry out the attention card test experiment,calculate the effective data rate of the experimental wireless communication,compare the attention card device data and the attention data after the classroom video coding(teacher according to the classroom video,evalucate students' attention performance data),teacher's interview data,relevant data analysis results: "Master-Slave" multi-machine communication program can be adopted in the middle school classroom;the attention card equipment data and teacher evaluation data on learners' classroom performance are more appropriate,and the correlation data with the classroom video coding is significant.Thus,verify the attention card tool is practical and effective.