CAJ | 학술논문

该设计研究的目的是通过超声波传感器发送超声波，并且读取回波使超声波模块的芯片产生高电平时间计算出前方障碍物的距离，同时驱动热释电红外传感器判断障碍物是人还是物体，经过MCU处理后，通过SPI总线驱动ISD4004芯片将录好的指定语音播放出去。该设计还可以通过GPS模块实时定位，使用矩阵键盘设定号码，将定位的坐标通过MCU驱动GSM/GPRS模块以短信为载体发送到设定号码的手机上，并且遇到障碍物时可以实现通过语音提示盲人避开障碍。本项目所研究的范围涉及人体红外的采集与检测，超声波信号的采集，STM32的程序编写，矩阵键盘的设计，GPS接收信息的处理，以及使用AT指令驱动GSM模块，在电路设计上采用创新节能的设计；在硬件组合上采用模块化的设计；在软件编程上采用嵌套调用的编程方案，最终实现盲人避障且可发送经纬度坐标求助的功能。
해설계연구적목적시통과초성파전감기발송초성파，병차독취회파사초성파모괴적심편산생고전평시간계산출전방장애물적거리，동시구동열석전홍외전감기판단장애물시인환시물체，경과MCU처리후，통과SPI총선구동ISD4004심편장록호적지정어음파방출거。해설계환가이통과GPS모괴실시정위，사용구진건반설정호마，장정위적좌표통과MCU구동GSM/GPRS모괴이단신위재체발송도설정호마적수궤상，병차우도장애물시가이실현통과어음제시맹인피개장애。본항목소연구적범위섭급인체홍외적채집여검측，초성파신호적채집，STM32적정서편사，구진건반적설계，GPS접수신식적처리，이급사용AT지령구동GSM모괴，재전로설계상채용창신절능적설계；재경건조합상채용모괴화적설계；재연건편정상채용감투조용적편정방안，최종실현맹인피장차가발송경위도좌표구조적공능。
When the purpose of the product design, the study by sending an ultrasonic ultrasonic sensor, and reads the chip ultrasonic echo module generates high time to calculate the distance in front of the obstacle,while driving pyroelectric infrared sensor determines obstacle:Summary people or objects, after MCU processing, through the SPI bus driver ISD4004 chip will record a good player out of the specified voice.This product can also be real-time location through GPS module,using a matrix keyboard to set the number, the coordinates of the location through the MCU drive GSM/GPRS module carrier SMS sent to the phone number set,and an obstacle can be achieved through voice Tip blind avoid obstacles.The scope of the project involves the study of the collection and testing of human infrared,ultrasonic signal acquisition,STM32’s programming,matrix keyboard design, processing GPS receiving information,and the use of GSM module AT command-driven,in the circuit design using innovative energy-saving design;the use of the combination of modular hardware design;programming scheme using nested calls in the software program, and ultimately blind obstacle avoidance and latitude and longitude coordinates for help function can be sent.