CAJ | 학술논문

根据食品配送途中对温度的多测点、实时性、可追溯性等要求，选用DS18B20数字温度传感器为温度采集器件，结合车载GPS/北斗定位终端的串口透传功能，设计了一种应用于食品冷链配送途中的有线温度采集系统，从而实现了对配送途中食品温度的多点实时采集、传输及监测，克服了现阶段应用中的温度监控实时性差、抗干扰能力弱、功耗及供电限制严重等缺点。通过在-20~+20℃温度范围内对传输稳定性、数据精度及不同传感器线长对数据精度的影响进行的试验结果表明，该系统工作性能稳定，数据精度及传输稳定性均达到了设计要求。
근거식품배송도중대온도적다측점、실시성、가추소성등요구，선용DS18B20수자온도전감기위온도채집기건，결합차재GPS/북두정위종단적천구투전공능，설계료일충응용우식품랭련배송도중적유선온도채집계통，종이실현료대배송도중식품온도적다점실시채집、전수급감측，극복료현계단응용중적온도감공실시성차、항간우능력약、공모급공전한제엄중등결점。통과재-20~+20℃온도범위내대전수은정성、수거정도급불동전감기선장대수거정도적영향진행적시험결과표명，해계통공작성능은정，수거정도급전수은정성균체도료설계요구。
According to the requirement of multi-point, real-time and traceability of temperature in food cold-chain distribution, a wired temperature acquisition system is designed, which uses data temperature sensor DS18B20 as the device of temperature acquisition, and combines with the serial port pass-through function of GPS/Beidou position terminal. Thus the multi-point real-time collection, transmission and monitoring of the food temperature during the distribution is realized. The weakness in real-time, antijamming capability, power consumption and serious electricity rationing are overcome. The experiment on the transmission stability, data accuracy and the effects of different sensor wire length to data accuracy is conducted, which is in the temperature range of -20~+20℃. The results show that the system works reliable, and the data accuracy and the transmission reliability can meet the design requirement.