Wireless sensing system for environmental humidity and temperature monitoring

Aiming at the actual demand for monitoring environmental information,a wireless sensing system for temperature and relative humidity(RH)monitoring based on radio frequency(RF)technology and mobile network was designed.This paper introduces the architecture of the system.The system uses AVR micro controller unit(MCU),KYL-1020U RF module and SHT71 to complete real-time temperature and humidity monitoring,and uses SIM900A module to realize remote alarming and monitoring with short message system(SMS)through global system for mobile communication(GSM).Experimental results show that the designed system has good stability of measurement and real-time performance,and it can be used in some small temperature and humidity monitoring occasions.

Application of Intelligent Blood Temperature and Humidity Monitoring System in Blood Station

Objective: To explore the application of intelligent blood temperature and humidity monitoring system in cold chain management of blood station. Methods: Through the monitoring of fifty sets of cold-chain equipment in the central blood station in Hezhou for 6 months, the differences between the management of the automatic temperature and humidity monitoring system and the manual management were compared in terms of real-time recording, equipment alarm, data storage, historical data traceability and data analysis. Results: Temperature and humidity automatic monitoring system can automatically real-time acquisition, transmission, storage and alarm according to the required time interval;meanwhile, historical data can be quickly exported and traced, data and charts can be analyzed, and the alarm is real-time and effective. Conclusion: The system can effectively monitor the process of blood cold chain in blood stations and play a key role in ensuring blood quality. It can be popularized and used in blood stations.

The Concept and Design of Safety Management Innovation in the Use of Medical Equipment:Design of Real-time Monitoring System for Temperature and Humidity of Infant Incubator Based on Internet of Things in China

Ensuring safety in the use of medical equipment is an important guarantee for clinical diagnosis and treatment.Because medical equipment is mostly electrical and electronic equipment,the suddenness of its failure is inevitable.Although some equipment has regular preventive maintenance and metrological calibration,it is patient-free static calibrated.In China,because of its large population,large patient base,and large use of medical equipment,nurses are too busy taking care of patients and cannot pay attention to the safety of the use of each device.Therefore,we propose using the Internet of Things and IT technology to carry out real-time monitoring and alarming of important parameters of some special,high-risk,and large-used medical equipment,so as to strengthen the safety management of equipment use.Through the management innovation,this article successfully implemented real-time monitoring of the temperature and humidity of the neonatal incubator;and greatly improved the safety in the use of such equipment.

Design of Real-Time Temperature Monitoring and Control System for Multimodal Ablation

By combining cryogenic cryotherapy and high-temperature radiofrequency therapy,multimodal ablation generates a rapidly changing temperature field in tissue by heating after pre-freezing.This method completely breaks tumour cells and releases a large amount of active antigen.Compared with the traditional single modality,the thermal physical ablation method has been shown to have a greater therapeutic effect,but it presents challenges in terms of precise monitoring and rapid control of the temperature during the treatment process.To solve this problem,we propose a temperature control system design utilizing aspects of probe sensing,real-time software and hardware signal interfaces,and dynamic compensation control strategies to accurately monitor the temperature changes during multimodal ablation treatment.The results show that the design system has millisecond-level high-speed control capability,an accuracy of 0.5℃,and the dynamic response time is less than 0.1 s.Furthermore,the temperature fluctuation in in vivo experiments is less than 0.5℃.

基于Android的轮胎模具仓库温湿度无线监控系统设计

该文设计了基于Android的温湿度无线监控系统。详细介绍了该系统的结构、温湿度控制模块设计、服务器端和客户端之间通讯设计、Android软件开发及功能设计。通过验证,系统能够同时在仓库现场和手机客户端24 h实时监控温湿度。

Influence of bio-inspired flow channel designs on the performance of a PEM fuel cell

Performance of the proton exchange membrane fuel cell(PEMFC)is appreciably affected by the channel geometry.The branching structure of a plant leaf and human lung is an efficient network to distribute the nutrients in the respective systems.The same nutrient transport system can be mimicked in the flow channel design of a PEMFC,to aid even reactant distribution and better water management.In this work,the effect of bio-inspired flow field designs such as lung and leaf channel design bipolar plates,on the performance of a PEMFC was examined experimentally at various operating conditions.A PEMFC of 49 cm2 area,with a Nafion 212 membrane with a 40%catalyst loading of 0.4 mg·cm-2 on the anode side and also 0.6 mg·cm-2 on the cathode side is assembled by incorporating the bio-inspired channel bipolar plate,and was tested on a programmable fuel-cell test station.The impact of the working parameters like reactants’relative humidity(RH),back pressure and fuel cell temperature on the performance of the fuel cell was examined;the operating pressure remains constant at 0.1 MPa.It was observed that the best performance was attained at a back pressure of 0.3 MPa,75°C operating temperature and 100%RH.The three flow channels were also compared at different operating pressures ranging from 0.1 MPa to 0.3 MPa,and the other parameters such as operating temperature,RH and back pressure were set as 75°C,100%and 0.3 MPa.The experimental outcomes of the PEMFC with bio-inspired channels were compared with the experimental results of a conventional triple serpentine flow field.It was observed that among the different flow channel designs considered,the leaf channel design gives the best output in terms of power density.Further,the experimental results of the leaf channel design were compared with those of the interdigitated leaf channel design.The PEMFC with the interdigitated leaf channel design was found to generate 6.72%more power density than the non-interdigitated leaf channel design.The fuel cell with interdigitated leaf channel design generated5.58%more net power density than the fuel cell with non-interdigitated leaf channel design after considering the parasitic losses.

基于Android终端的便携式温湿度监测警示系统设计

在电力检修运维的过程中,温度与湿度的检测与控制是安全保障的重要环节。本文提出一种基于Android终端的便携式温湿度监测警示系统,实现电力施工现场温湿度数据的实时采集显示、曲线分析、多途径告警等功能,具备有体积小、精度高、便于携带等特点,解决了传统装置的不足,为作业现场的安全提供更加便捷智能的保障。

混流式水稻烘干塔温度远程监测系统设计

针对混流式水稻烘干塔温度难以远程监测的问题,设计了一种基于Python和LoRa技术的温度远程监测系统。系统以STM32F1单片机硬件系统为下位机,通过PT1000温度传感器测得烘干塔温度信息,判断水稻烘干塔干燥状态,并通过LoRa无线模块将状态信息传输至上位机人机界面实时显示。生产试验结果表明:整套系统数据传输性能稳定,传输距离远,数据传输成功率达96%以上,满足复杂工作环境要求,能够实现粮食干燥过程的温度实时监测功能。

川西高海拔隧道洞内气温特征及抗防冻理念探讨

针对川西高海拔隧道抗防冻设计问题,对运营期公路隧道洞内气温采用实测和数值模拟等方法,对隧道洞内纵向温度特征及抗防冻设计方法进行研究。结果表明:1)川西高原较短隧道冬季洞内纵向温度呈负温贯通状态,长隧道、特长隧道的洞内纵向温度呈现出弱对称或非对称分布特征。2)冬季隧道洞口温度及洞身负温分布状态与隧道自身所处环境有关,尤其是隧道两端地形特征及高差程度。3)洞口负温段冻结指数和年冻结天数均随进洞距离的增大呈减小趋势,但单向自然风占主导的隧道下降趋势较缓。4)川西高原隧道衬砌防冻设计宜结合围岩冻胀敏感性,考虑以冻结指数180℃·d为临界值较为合理,两侧水沟保温设防长度可按月平均气温0℃考虑;考虑到冻结指数大于180℃·d且月平均气温低于0℃的衬砌段落会经受短时频繁冻融循环作用的影响,建议采取必要措施改善混凝土耐久性指标,确保隧道衬砌结构的长期稳定性。

基于温湿度控制设计地下抗裂防渗漏混凝土的应用研究

文中基于温湿度控制思路,通过大掺量粉煤灰、多级配低空隙率骨料、分段补偿收缩和温湿度监测调控等成套技术设计抗裂防渗漏混凝土,以缓解或彻底消除地下结构开裂渗漏。

基于LoRa的粮仓环境监测系统设计

针对粮仓监测范围大、传输距离远、功耗高等问题,深入研究LoRa无线通信、传感器、云服务器等技术,设计粮仓环境监测系统,采集节点采集并发送温湿度数据至网关,网关收到数据后将其发送到物联网云平台,并使用微信小程序实现对数据的实时显示,从而实现了对粮食仓储环境的有效监测。

温湿度场仿真模拟在博物馆环境监测中的应用研究

针对博物馆当前的环境监测方式无法全面感知温湿度空间分布的问题,本研究引入与数据同化(EnKF)算法相结合的计算流体动力学(CFD)模拟方法,以某博物馆的展厅空间为例,获得可视化的温湿度场仿真模拟结果,并结合藏品保护要求进行数据分析和相关讨论。经与实时监测数据对比,基于数据同化的CFD模拟准确性良好,误差在可接受范围内。本研究引入的技术方法实现了博物馆环境监测从“点监测”到“场监测”的转变,后续可为博物馆藏品预防性保护提供更加科学有效的技术支撑。

FBG传感器在沥青路面中的应用研究进展

近年来,日益发展的光纤传感技术为路面实时健康监测提供了新的方法。本文基于光纤感知原理,分析了光纤Bragg光栅(FBG)传感器尺寸及结构设计特点,总结了FBG传感器在道路温度及应变场中的实测应用过程,梳理了FBG传感器在不同道路病害中的健康监测手段。结果表明:合理的封装材料及尺寸设计可以保护FBG传感器;FBG传感器在温度及应力场中应用时,能够准确掌握路面内部结构温度、应变分布规律;针对不同道路病害,选择不同类型光纤传感器可以实现道路健康状态实时监测。

玉米烘干自动监控系统设计

谷物干燥监控系统可以实时监测谷物烘干过程中的温度、湿度等关键参数,保证谷物在烘干过程中达到理想的水分含量,从而保证产品质量和食品安全。为提高玉米烘干效率,对玉米烘干过程进行监控。该文提出一种基于DCS的玉米烘干自动监控系统的设计,对输入模块、监控模块和输出模块进行设计,建立实时监测和报警机制,同时结合先进的自动化控制技术,能够有效提高烘干效率,降低能源消耗,提升生产质量,具有重要的应用价值和推广前景。

一种冷链温湿度监测系统的设计与实现

针对我国冷链温湿度监测过程中存在的自动化程度低、实时性差等问题,设计了一种基于物联网与云平台的实时冷链温湿度监测系统。选用PT1000和AM2120传感器作为系统的信息采集部分,LPC824M芯片进行数据处理,配合无线通信模块BC28芯片和阿里云平台实现检测系统与上位机的高速通信。实验结果表明该系统具有低功耗、使用寿命长、运行稳定等特点,可实现对冷链系统中温湿度等数据的实时监测。系统安装方便,成本低廉,能够实时、准确地监测冷链系统环境温湿度变化状态,避免冷链系统因温湿度剧烈变化带来的损失。

温湿度冷链监控管理系统在医院药品质控管理中的应用

通过安装温湿度冷链监控管理系统,监测冷链药品温湿度。比较2022年9月—2023年2月医院药品库房和冰箱系统监测记录的温湿度与人工记录温湿度温度超标和预警情况,总结影响存储药品库房和冰箱温湿度超标的原因,提出相应的解决办法,大大降低了药品质量问题的风险。为相关部门进行冷链药品储存条件检查时提供了可靠的数据和图像。所以,温湿度冷链监控管理系统为冷链药品的储存条件提供了更可靠、有效、高效的保障,更有利于保障冷链药品的安全有效,逐步实现医院冷链药品/试剂在冷链环节全程的信息化、智能化监控管理提供参考。

基于泄漏电流三相不平衡度的避雷器在线监测优化方案

避雷器在线监测数据易受环境温湿度和表面脏污等影响,而传统的泄漏电流报警阈值设定方法容易产生误告警。对此,提出一种基于三相数据趋势比对的避雷器在线监测告警算法,利用温湿度抑制算法抑制其对阻性电流的影响,在修正后的阻性电流数据基础上计算三相阻性电流的不平衡系数,并结合阻性电流的报警阈值制定出告警规则。以某220 kV变电站内避雷器为例进行验证,相比原有单一告警规则,该告警策略可有效降低误告警率,提高在线监测告警的准确率和实用化水平。

基于云平台的环境监测系统设计与实现

在科技不断进步和现代工业化的推动下,温湿度环境监测技术的应用范围正在不断扩大,然而,由于一些情况下现场操作的不便利和不安全性,远程获取数据有些困难,因此,设计一种基于云平台环境监测系统具有非常重要的现实意义。本文以ESP8266为核心控制器,通过DHT11温湿度传感器采集数据,并通过OLED显示屏显示,使用Arduino软件进行编程调试,通过在阿里云平台上搭建可视化环境实现温湿度的可视化功能,最终通过手机云智能App和网页Web端显示环境温湿度,从而达到实时监测环境温湿度的效果。

基于BLE Mesh组网算法在冷库监测系统中的应用研究

高架立体冷库空间范围大、内部结构比较复杂,在使用传统无线组网技术对其进行温湿度监测时,通常存在组网方式复杂、功耗高的问题。以BLE Mesh组网方式为基础,通过构建节点能量模型,对传统LEACH算法进行针对性的优化,提出一种基于节点能量均衡的分簇组网算法(EBBM)。该算法主要对冷库温湿度监测网络中的节点功耗进行优化。Matlab仿真分析对比结果显示,该算法降低了网络中的数据包冗余程度,使节点存活率提高了17.8%,具有一定的应用价值。

基于无线物联的温湿度监控系统研发

为实现实验场所温湿度的快速稳定和集中监控,针对数字温湿度计无法实现记录、远程监控和报警功能,以及示值超差会引起设备报废的问题,采用无线加有线物联技术和示值标定方法,使温湿度传感器探头具有拆卸、更换和软件标定温度、湿度示值的功能。结果表明:该方法可降低设备的停用报废率,应用于对环境温湿度要求严格的实验室。