Development of a Calibration and Monitoring System for GD-1 High Pressure Common Rail Diesel Engine

Based on CAN calibration protocol, a new calibration and monitoring system was developed for the GD-1 high pressure common rail diesel engine. CAN driver block, monitoring program and calibration program for this system were designed respectively. The inquiry mode was used in the monitoring program and the interrupt mode was used in calibration program. The calibration program was designed in structural programming model. This system provides a reliable, accurate and quick CAN bus between ECU and PC, with baud rate up to 500Kbit/s. The implementation of the compatible and universal CAN calibration protocol makes it easy to displace the system and its function modules. It also provides friendly, compatible and flexible calibration interface, and the functions of online calibration and real-time monitoring. This system was successfully used in a GD-1 high pressure common rail diesel engine and the engine performance and exhaust emissions were significantly improved.

Intrapartum application of the continuous glucose monitoring system in pregnancies complicated with diabetes: A review and feasibility study

Intrapartum maternal normoglycemia seems to play an important role in the prevention of adverse perinatal, maternal and neonatal outcomes. Several glucose monitoring protocols have been developed, aiming to achieve a tight glucose monitoring and control. Depending on the type of diabetes and the optimal or suboptimal glycemic control, the treatment options include fasting status of the parturient, frequent monitoring of capillary blood glucose, intravenous dextrose infusion and subcutaneous or intravenous use of insulin. Continuous glucose monitoring system(CGMS) is a relatively new technology that measures interstitial glucose at very short time intervals over a specifi c period of time. The resulting profi le provides a more comprehensive measure of glycemic excursions than intermittent home blood glucose monitoring. Results of studies applying the CGMS technology in patients with or without diabetes mellitus(DM) have revealed new insights in glucose metabolism. Moreover, CGMS have a potential role in the improvement of glycemic control during pregnancy and labor, which may lead to a decrease in perinatal morbidity and mortality. In conclusion, the use of CGMS, with its important technical advantages compared to the conventional way of monitoring, may lead into a more etiological intrapartum management of both the mother and her fetus/infant in pregnancies complicated with DM.

Design of Remote Monitoring System for Ceramic Electric Kiln

In order to improve the management and control requirements of small electric kilns in ceramic production field.According to the excessive dispersion of electric kilns in porcelain production field,a remote monitoring system based on RS485 bus and Modbus protocol is designed.The system consists of data acquisition,field control,cloud monitoring and communication protocol.MCGS is used as the master station to communicate with the temperature controller,collect and transmit the internal data to Siemens PLC.Through the communication between Siemens PLC and IOT gateway,the kiln working data is uploaded to the cloud platform to realize the remote monitoring for ceramic electric kiln.The experimental results showed this system can accurately collect the working temperature and parameters of the kiln in real time,and can remotely cortrol the kiln.

Home Monitoring of Estrone-3-Glucuronide (E1-3G) Levels in Two Different Ovarian Stimulation Protocols: A Pilot Study

Background: Studies have shown a strong correlation between the growth of E2 in serum and estrone-3-glucuronide (E1-3G) in urine during ovarian stimulation. Thus, we developed theoretical models for using urinary E1-3G in ovarian stimulation and focused on their experimental verification and analysis. Methods: A prospective, observational pilot study was conducted involving 54 patients who underwent 54 cycles of ovarian stimulation. The goal was to establish the growth rate of urinary E1-3G during the course of stimulation and to determine the daily upper and lower limits of growth rates at which stimulation is appropriate and safe. Controlled ovarian stimulation was performed using two different stimulation protocols—an antagonist protocol in 25 cases and a progestin-primed ovarian stimulation protocol (PPOS) in 29 cases, with fixed doses of gonadotropins. From the second day of stimulation, patients self-measured their daily urine E1-3G levels at home using a portable analyzer. In parallel, a standard ultrasound follow-up protocol accompanied by a determination of E2, LH, and P levels was applied to optimally control stimulation. Results: The average daily growth rates in both groups were about 50%. The daily increase in E1-3G for the antagonist protocol ranged from 14% to 79%, while they were 28% to 79% for the PPOS protocol. Conclusion: This is the first study to analyze the dynamics of E1-3G in two different protocols and to estimate the limits of its increase during the entire course of the stimulation. The results confirm our theoretical model for the viability of using urinary E1-3G for monitoring ovarian stimulation.

A hierarchical architecture of centralized monitoring and controlling system and its high-performance and interoperability protocol

This paper describes a hierarchical architecture and a high-performance and interoperability protocol for centralized monitoring and controlling systems (CMCS) . The protocol we proposed can interoperate different monitoring and controlling systems constructed by different companies, each with different functions and communication protocols. The protocol reduces the amount of traffic and has real-time and high-perfor-mance advantages. The protocol was implemented in CMCS for telecommunication power supply and air-condi-tioner used by the Telecommunication Bureau of Zhejiang Province. This paper deals with the hierarchical architecture and function of CMCS and packet format, command ID, and SDL description of its protocol. We also discuss the properties of the interoperability and performance of the protocol in this paper.

A Multi-Interface Remote Monitoring and Control System Architecture Based on Embedded Server

This paper presents a multi-interface embedded server architecture for remote real-time monitoring system and distributed monitoring applications. In the scheme,an embedded microprocessor( LPC3250 from NXP) is chosen as the CPU of the embedded server with a linux operation system( OS) environment. The embedded server provides multiple interfaces for supporting various application scenarios. The whole network is based on local area network and adopts the Browser / Server( B / S) model. The monitoring and control node is as a browser endpoint and the remote node with an embedded server is as a server endpoint. Users can easily acquire various sensors information through writing Internet protocol address of remote node on the computer browser. Compared with client / server( C / S) mode,B / S model needs less maintain and can be applicable to large user group. In addition,a simple network management protocol( SNMP) is used for management of devices in Internet protocol( IP) networks. The results of the demonstration experiment show that the proposed system gives good support to manage the network from different user terminals and allows the users to better interact with the ambient environment.

基于LabVIEW的机电液多源信息可视化监测系统

针对单一的传感器检测不能全面反映机电液系统运行的综合情况,为提高系统运行状态监测的可靠性,该文提出了采用多传感器、多角度的机电液综合信息监测方法。开发了基于LabVIEW的机电液系统多源信息可视化监测软硬件系统,组建了基于Modbus RTU现场总线协议的多源传感器测试网络,完成了多传感器信息的采集与传输,实现了多传感器信息曲线的实时动态显示、超限报警、数据表显示与保存等功能。该系统可视化效果好,已成功应用在工程现场,为系统故障的诊断与辨识提供了软硬件基础,对保障机电液系统的安全运行具有重要意义。

矿井吊盘稳车的APP远程监控系统设计

思山岭矿井吊盘稳车的工作环境复杂,其监控终端的便携性是一个亟待解决的问题。针对这一挑战,本项目采用三菱FX3U系列PLC作为控制核心,它具备高速的处理能力、强大的控制能力以及稳定的性能,十分适合对复杂环境中的稳车进行控制与监控。为了实现远程监控,采用Modbus TCP通讯协议与PLC进行通讯,确保了数据传输的准确性和实时性。同时,引入多种传感器采集稳车设备的关键参数数据,如压力、速度、深度等,为监控提供全面的数据支持。为了方便矿井工作人员随时随地灵活地监控,本文采用Java编程语言开发APP端服务器环境以及一款Android APP,实现实时显示稳车设备的各项工况数据,并进行及时预警。该监控系统实现了对矿井稳车集成系统的灵活远程监控,进一步提高了稳车设备工作效率,降低了运维成本,同时,为矿井稳车集成系统的稳定性与安全性提供了有力保障,为矿井的安全生产提供了重要的技术支持。

网络多媒体传输协议在物联网音频监控系统中的应用

介绍网络多媒体传输协议的基本原理,探讨其在音频监控中的应用,包括音频数据捕获、编码、传输、接收及解码等环节。基于此,设计一个基于网络多媒体传输协议的物联网音频监控系统架构,并对其功能进行设计。最后进行系统运行测试,验证该架构的可行性和有效性。

基于6LoWPAN的智慧校园公共安全异常监控系统设计

在智慧校园网络中,监控系统无法准确捕获异常人员信息,是造成公共安全事件的主要原因;为提高智慧校园公共安全性,设计基于6LoWPAN的智慧校园公共安全异常监控系统;建立6LoWPAN网络,并在其中规范协议栈堆叠形式,完成基于6LoWPAN的智慧校园监控协议栈开发;利用6LoWPAN协议栈,划分功能性模块,以此为基础,建立人员信息采集模块、环境监测模块、门禁控制模块之间的连接关系,实现异常监控系统的应用部件设计;采用监控系统上位机节点,设置各级部件结构的模块运行条件,并联合相关应用部件,实现基于6LoWPAN的智慧校园公共安全异常监控系统设计;实验结果表明,在同一帧图像中,设计系统可以全部提取异常人员信息,且不会出现错误提取的情况,监控准确率高达100%,能够有效提高智慧校园公共安全性和异常监控准确性。

基于物联网远程监控的太阳能定向跟踪系统设计

设计了一种基于物联网远程监控的太阳能定向跟踪系统,分别对太阳能定向跟踪系统本体和远程监控系统进行了设计与开发,采用离线和实时控制两种方式,通过监控数据计算当前的太阳高度角和方位角,调整光伏板的倾角,从而提高太阳能光伏板的发电率。对该装置设备层的太阳能定向跟踪系统本体采用框架式结构设计,并通过模糊PID算法对跟踪装置电机进行调控;对应用层的远程监控系统采用B/S架构设计,使用MQTT协议与云平台进行数据交互,用户可直接通过浏览器访问监控系统,实现太阳能定向跟踪系统的远程状态检测、实时控制、数据管理等功能。经测试,用户能通过该监控系统控制和监控太阳能定向跟踪系统的运行,满足太阳能定向跟踪系统远程监控的要求,系统具有较高的实用性。

烟草物流中心数字化车间监控系统研究

针对烟草物流自动化车间生产过程监控不足导致车间生产效率不高、管控难度大的问题,研究了一种面向生产过程的可视化监控方法,该方法从实体设备、车间作业流程等多方面构建具有多层级映射规则的数字孪生车间功能模型,在此基础上,建立孪生数据映射逻辑模型,搭建基于S7协议的实时数据采集传输架构,驱动孪生模型同步运行,设计并开发了数字化车间监控系统。最后通过实例验证,表明此系统能够有效集成、融合车间生产数据,实现对车间作业全流程的有效监控。

血流动力学监测群体化策略——CHOLKIT方案对心脏外科术后患者预后的价值分析

目的通过实施血流动力学监测群体化策略——CHOLKIT方案预测心脏外科术后患者的预后,探讨CHOLKIT方案的实际应用价值,如早期干预改善组织灌注及微循环,预测拔管时机。方法采用前瞻性队列研究分析新疆医科大学第一附属医院2020年4月至10月接受心脏外科手术的88例患者,以患者存活或死亡作为研究终点,将其分为生存组(84例)和死亡组(4例)。应用CHOLKIT方案对不同时间段患者的中心静脉压(central venous pressure,CVP)、心率(heart rate,HR)、中心静脉血氧饱和度(central venous oxygen saturation,ScvO_(2))、乳酸(lactic acid,Lac)、血钾(K^(+))、灌注指数(perfusion index,PI)和足趾温度(temperature,T)进行评分,根据评分预测CHOLKIT评分与预后的相关性。结果CHOLKIT方案中部分监测指标与心脏外科术后死亡率、肾损伤及机械通气时间相关。结论CHOLKIT方案可预估心脏外科术后患者拔管时机及病情变化,尽早干预可改善患者预后、机械通气时间及重症监护病房入住天数。

融合多传感器的飞行器电缆网状态在线监测系统

飞行器电缆网承担着电气、信号和数据传输等关键职能。在飞行器超声速飞行过程中电缆网面临诸如高温、振动、电流过载和低气压等挑战,对飞行器电气系统的安全性和可靠性产生影响。本研究设计了电缆网多传感器监测系统和基于多传感器融合的电缆网健康状态监测算法。在监测系统中实现了电压、电流、温度、加速度和气压等数据采集、存储以及无线传输功能。算法在预处理阶段通过归一化的方式,综合考虑了高温、振动、电流过载和低气压等稳态和瞬态值对电缆网健康状态的影响,算法健康状态分类部分设计了多层分类网络对电缆网状态进行分类,在实际实验数据集与仿真数据集中,本文多层分类网络相比于SVM分类网络正确率平均提升6.4%,虚警率平均降低了77.2%;本文的多传感器监测算法相比于单通道监测算法,正确率有显著提升,对比实验结果验证了本文算法在电缆网健康状态分类任务中的有效性。实验结果表明,电缆网多传感器监测系统可以有效监测并识别飞行器电缆网的健康状态,为飞行器电气系统运行提供了有力保障。

油气井下多参数感知监测系统的设计与测试

为获取油气井下的关键参数,设计了一套井下智能监测系统。系统以PIC18F67K22作为主控芯片,集成温度、压力、位移、含水率、加速度传感器5种监测模块及电源模块。同时制定通信协议、配置相关参数并采用QT creator开发上位机,搭建了上位机与采集系统之间的完整通信体系,实现了多参数实时采集监测。通过模拟高温高压多参数变化实验、测试环境实时变化曲线,验证了监测系统的实时性、稳定性、准确性,结果表明该系统可满足实际需求,为油气井工具智能化提供了可靠方案。

基于物联网技术的智慧健康监测系统设计与实现

传统的医疗模式很难及时获取人的健康数据,不能实现对老年人健康及姿态信息的实时监控。文中以STM32F103单片机为核心控制器,采用心率血氧传感器、姿态传感器等采集身体健康数据,通过MQTT物联网协议将其上传至阿里云平台,并应用云端数据分析处理平台对身体健康数据进行实时分析和预警。系统经过测试,当用户跌倒或心率血压异常时,设备会发出警报声,提醒周围人进行救护,同时监护人手机会收到异常预警。

基于VISIO组件的配电网监测系统设计与实现

针对中低压配电网监测技术无法实现对各类电网运行信息的有效共享以及可视化效果差等问题,设计出一个能够将配电网多种运行数据集成实现信息共享并直观显示配电网架构的实时数据监测系统。基于.NET平台结合VISIO开发技术以下位机设备端作为远程测量设备设计配电网实时数据的监测系统,其中主机端与下位机设备端采用C/S架构以及Modbus协议进行通信。该系统具有配电网设备数据监测、VISIO组件主界面数据显示、数据存储、数据管理等功能。测试运行结果表明,该系统可以较好地实现远程监测与控制,对于提升中低压配电网的分析和管理水平具有一定参考价值。

基于TCP/IP协议与关联规则的电力监控系统多线程通信方法

电力监控系统环境中存在过多噪声因素干扰,导致通信效率和质量低。为此,提出一种基于传输控制协议/网际协议(transmission control protocol/internet protocol,TCP/IP)与关联规则的多线程通信算法。将背景噪声看作电力监控信号的突变现象,查找回应突变函数的信号值,利用谐波分离算法,去除背景噪声。根据不同线程的传输特点,采用TCP/IP协议建立通信程序包,分别设置句柄、终止、挂起以及执行函数,为不同线程的通信数据,匹配不同的通信协议。试验结果证明:对电力监控系统源设备的传输信号多线程通信时,通信信号波频变化最为平稳,在0~2000 s的采样区间内,未出现传输为0现象;对背景噪声去噪后,波形相比原始信号变化明显较为稳定,没有出现过高或过低的幅值变化。所提方法通信信号表达平稳、效率较高,对原始信号的保留效果较好,去噪能力很强。

无线微震传感器网络高精度时间同步技术研究

时间同步技术作为无线微震传感器网络的核心技术之一,是网络协调运行的关键。首先研究了无线传感器网络时间同步原理及影响同步精度的因素;其次研究了经典无线时间同步协的实现方法;然后仿真对比了传感器网络时间同步协议(Timing-sync Protocol for Sensor Networks,TPSN)和泛洪式时间同步协议(Flooding Time Synchronization Protocol,FTSP)的同步精度;再针对FTSP协议的不足提出一种改进的G-FTSP协议,能有效提高无线传感器网络时间同步精度;最后估算由时间同步误差造成的微震震源定位误差,验证G-FTSP协议满足实际生产需求。

核电仪控设备的5G改造及应用研究

该文选取核电环境监测系统(KRS)进行5G改造研究。通过研制具有透传功能的5G终端,实现核电环境监测数据通过5G信号接入主控室NC级DCS系统,并就现场环境进行试验,对设备穿透能力、抗干扰能力、干扰度等进行实际测量。试验结果表明,该5G改造方案适用于采集类、透传类核电仪控设备改造,为现有仪控设备数字化改造提出了新的解决思路。