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Asthecoreforcedrivingscientificandtechnologicalprogressandsocialdevelopment,engineersplayakeyroleinvariousfields.Inordertogainadeeperunderstandingofthecurrentsituationofengineersintheworkplace,thissurveycoveredengineersfromdifferentindustriesandwithdifferentexperiencelevels.Throughquestionnairesandinterviews,alargeamountoffirst-handdatawascollected,aimingtocomprehensivelypresenttheworkplaceecologyofengineers.1.BasicinformationoftheengineeringgroupIndustrydistribution :Thesurveyresultsshowthatengineersarewidelydistributedinmultipleindustries,withthemanufacturingindustryaccountingforthehighestproportion,reaching90%,followedbyinformationtechnology,electroniccommunications,energyandotherindustries.Engineersindifferentindustrieshavecertaindifferencesinworkcontent,technicalrequirementsandcareerdevelopmentpaths.Ageandexperience :Themajorityofengineersareyoungandmiddle-aged,withengineersaged30-45accountingfor70%.Intermsofworkexperience,engineerswith5-10yearsofworkexperienceaccountforthehighestproportion,at80%.Theseengineersusuallyhaveaccumulatedcertainprofessionalknowledgeandpracticalexperienceintheirrespectivefieldsandbecomethetechnicalbackboneofthecompany.2.CurrentworkstatusWorkinghoursandintensity :Mostengineerssaidthattheirworkintensityishigh,with80%workingmorethan40hoursperweek.Overtimeiscommonduringtheprojectbreakthroughphaseorproductdeliveryperiod.High-intensityworkbringscertainpressuretoengineers,butitalsopromptsthemtocontinuouslyimprovetheirworkefficiencyandproblem-solvingability.Jobcontentandresponsibilities :Engineershaveawiderangeofjobcontent,includingproductdesign,R&D,testing,projectmanagement,technicalsupport,etc.Engineersindifferentindustriesandpositionshavedifferentjobfocuses.Forexample,softwareengineersaremainlyresponsibleforcodewritingandprogramdevelopment,whilemechanicalengineersfocusonmechanicalstructuredesignandmanufacturingprocessoptimization.

引言目前,矿井生产的采煤、掘进、通防、机电、运输5个大系统就分布在地下空间中,整个生产过程受瓦斯、一氧化碳、煤尘、涌水、机电、顶板、通风等因素的威胁.复杂的环境条件要求随时注意安全,出现异常后能快速、准确地定位事故和人员,并及时采取措施.本文所阐述的应用就是基于矿井安全系统的一种穿透性定位方案的实现.使用低功耗,低数据率的Zigbee技术.……