由住房和城乡建设部颁布的《建筑智能化系统运行维护技术规范》JGJ/T417-2017,自2017年10月1日起实施. 继《智能建筑设计标准》GB 50314、《智能建筑工程质量验收规范》GB 50339和《智能建筑工程施工规范》GB 50606实施多年后,《建筑智能化系统运行维护技术规范》JGJ/T417的出台,标志着智能建筑全生命周期质量管理标准体系构建工作基本完成,必将为保障建筑智能化系统安全、可靠和高效运行,规范系统运维服务机构的服务过程和提高其服务质量发挥重要作用.
“绿色数据中心”是机房建设的目标,《电子信息系统机房设计规范》(GB 50174-2008)中把建设绿色机房放到了非常重要的位置.在总则第一条中就明确规定:“为规范电子信息系统机房设计,确保电子信息系统设备安全、稳定、可靠地运行,做到技术先进、经济合理、安全适用、节能环保,制订本规范.”机房是保障信息运行的核心基础设施,所以保证信息系统安全可靠的运行是其第一要务.
1 概述 智能建筑在我国的发展已有20余年的历程,经历了起步、推进和规范发展等三个主要阶段.目前,国内智能建筑市场发展的主要特征及总体状况体现在如下几个方面: 其一,智能建筑的主要产品基本上实现了国产化,自主知识产权数量逐年增加,但是核心竞争力有待进一步提升; 其二,基本上完成了专业构架、技术体系、标准体系、工程实施体系的基础建设,但是有待进一步完善; 其三,智能建筑行业纳入政府职能管理,实行市场准入制度; 其四,智能建筑的产业链日趋完整,产业队伍迅速发展壮大,智能建筑产业和行业初具规模.
本文针对我国建筑设备管理系统的节能现状和智能建筑设计标准的要求,从功能结构和系统集成策略的角度设计了大型公建设备管理系统节能规划总体框架.详细探讨了能耗分项计量模型构建、能耗数据处理和基于能耗分项计量的节能诊断的一般思路.提出了我国建筑设备管理系统节能规划与实施过程中存在的关键问题及对策.
2012年6月,中国BIM发展联盟、国家BIM标准编制组牵头的中国BIM标准研究工作在全国范围内启动,计划利用一年的时间,基本完成BIM标准编制前的基础性工作,设立了相关课题“工程项目全生命期BIM标准技术研究”.北京理正软件股份有限公司是该课题的总体承担者,本文作者承担了部分子课题研究任务.在研发实践中出现的问题是:很多项目参与者对BIM的一些本质问题认识不清,抓不住影响总体效果的关键因素,因而影响软件研发进程和质量.笔者认为这从某种程度上讲是由于缺乏量化理论指导造成的.量化描述实际上是从工程全生命周期的海量信息中挖掘关键信息素的过程.而函数是一种最能将实际问题进行有效抽象、量化描述的经典数学手段.基于此,我们在深入分析BIM体系架构中关键影响因素的基础上,提出了一种能够描述BIM实施能效的量化表达方法,即BIM能效函数.现已将方法应用到北京理正软件股份有限公司正在研发的中国BIM标准研究项目中,收效良好.
In this paper,based on the introduction of the characteristics and recognition method of Inrush,a Time-Frequency analysis on Inrush and internal fault are performed.Through comparison among the effects that different iteration times of same algorithm takes and difference between different algorithm,the following conclusions are drawn:(1)Matching Pursuit algorithm's convergence rate increases as the iteration times increases;(2) Among three optimization algorithm,Local Particle-Swarm Optimization algorithm has better optimized outcomes.These analysis achievements lay a foundation for future study on pattern recognition method in transformer Inrush.
On-line identification problem of process model was discussed in this paper, which use warm intelligent technology. An on-line identification method based on HPSO-Rosenbrock parameter estimation algorithm is proposed to solve the problem that traditional identification methods cannot be used in continuous-time systems on closed-loop step response conditions. This identification method is a combined method of a modified PSO and Rosenbrock which can make full use of global search ability of PSO and local search ability of Rosenbrock. Identification results of HPSO-Rosenbrock algorithm were made and compared with the other identification methods. The simulation and compare results show that the on-line identification method proposed in this paper is an approximate unbiased and effective identification method. This method can be successfully applied to closed-loop identification under secious noise and big dead-time object which provides a new idea for system optimization and advanced control.
On the basis of an integration project of intelligent building system completed by the author recently, and through analysis of the concept for IBMS, this paper explains in detail engineering design plan. The paper also presents in detail the design of power distribution monitoring and management system, illumination monitoring and management system, and the realization of their functions. We can see that application of intelligent building management system can bring enormous direct economic benefits to the terminal. The indirect benefits in the control, management, information and decision making are immeasurable.
Intelligent release is core control unit of intelligent appliances, which is used to protect power system and power devices from damage under the faults. In this paper, with LPC2478 as Microcontroller, an intelligent release control unit with Ethernet communication functionality was presented. The intelligent release control unit’s basic functions and extended functions were described in brief. Implementation method of control unit was illustrated in detail. Process flow chart for fault diagnosis was supplied. Full-wave Fourier algorithm was adopted to compute fundamental components and harmonic components to filter decaying DC component and non-integer harmonic. This release can be adjusted according to the requirement of power quality to avoid malfunction under the circumstance that non-fault current and voltage fluctuation occur. Furthermore, through Ethernet communication, more functionality can be implemented to make the release more intelligent.
An IMC-PID based on V-norm decoupling for multivariable stable process with time delay was proposed in this paper. Previous multivariable IMC is usually designed after the decoupling of the process, however the industrial process modeling is difficult to be precise, so the controller design is often not ideal after decoupling. The method in this paper designs both the decoupling and controller at the same time, the IMC is not only a controller, but also a decoupling compensation. A filter parameter optimization method based on a new performance function was adopted. The controller can be realized by time delay compensation when there is an advance part. The IMC-PID designed by this method has strong robustness when the model is mismatch and excellent performance both in decoupling and control. The simulation results show that the method is very effective and has a wide range of application in actual industry area.
This paper describes a program which realizes digital fault diagnosis for digital logical SPF in a Control System. This program is developed through fault dictionary, VXIbus, and LASAR (Logic Automatic Stimulate And Response. It can accurately diagnose the wrong chip pin in SPF. Firstly the paper introduces the used technology. And then it gives a method of locating probe-position through the process of searching wrong route in electronic circuit. Finally the paper describes the method of using data and analysis to realize the fault diagnosis of SPF.
On the basis of scientific research projects recently completed by the author, and through analysis for contents of fault test, this paper makes a detailed description of methods for fault test, which provides fault dictionary method, coding method and comparison method. The assay mainly stipulates fault simulation analysis based on LASAR (Logic Automatic Stimulate and Response), and gives four major steps of the development for fault simulation software including modeling of tested unit, simulation of a normal board, fault simulation and post-treatment, and realizes 96.59% of fault coverage rate of excitations.
On the basis of an integration project of intelligent building system completed by the author recently, and through analysis of the concept for IBMS, this paper explains in detail engineering design of Intelligent Building Management System (IBMS). The paper also presents in detail the integration method of Architectural Equipment monitoring system, electric power monitoring and management system, intelligent lighting monitoring system, and the realization of their functions.
The design and development of an intelligent switching value measurement and control node based on LONWORKS Technology is introduced in this paper. The design scheme is proposed, and I/O hardware circuit and software design methods are described. MC143150 is used as the core of the hardware circuit. The input channel is composed of two TLP521-4 and one 74LS166. The output channel is composed of one 74LS164, one 74LS373, two TLP521-4, and two MC1413. The program is compiled with NEURON C. Bitshift I/O is used to transfer 8-digit data words into or out of the Neuron chip. And communication with other nodes is realized by defining network variables. This node is simple in design. Normal chips are advanced technology are combined to realize the treatment of switching values.
As information technology becomes more important to build enterprises' competitive advantage, transforming their IT organization from technology provider to service provider by introducing IT service management (ITSM) processes is also becoming imperative. Configuration management is one of processes in ITSM which plays a key role for successful implementing ITSM. In this paper, we give a set of suggested processes for configuration management, including policies, key activities, roles and responsibilities, RACI matrix, and technical tools, etc.
This paper introduces the characteristics of Lonworks technology and describes the design of an intelligent application node based on Lonworks technology. This node has a neuron chip as its core, performs the collection, display, and output of analog quantities, and provides buttons for input. The hardware circuit and software design methods are presented.
On basis of scientific research projects recently fulfilled by the author, and through detailed analysis for more than 30 LASAR circuit simulation result documentations, this paper makes a detailed description of fault diagnosis software development process, which provides design basis for relevant development of circuit fault simulation software. The assay stipulates data domain testing technology and its approaches; on basis of testing system comprehensive description, realizing process of fault diagnosis software is states accordingly. In the research, LASAR (Logic Automatic Stimulate and Response) circuit simulation results fault dictionary and VXI bus technology are adopted, and Lab Windows/CVI for dummy instrument software development environment are used as the platform for fault diagnosis software development.
This paper explains the different layers of integration in intelligent building system and analyses characteristics and problems of four existing integration modules. Two new solutions of parallel integration module and OPC componential integration module are presented. The core idea of parallel integration module is that BMS network is divided into management network and monitor network with its subsystems running in monitoring network and system integration database running in management network. The integration of each subsystem and management network can be divided into two types according to the additional application program. The first one is to realize integration through industrial standard protocol. Another one is to develop gateway software by using application program of API/Net API function provided by system to ensure access to database when both communication sides do not have one standard protocol interface. The core idea of OPC componential integration module is to develop an OPC server running between central monitoring and control station of BMS and each subsystem to ensure the same standard OPC being used by OPC server and OPC client and direct intercommunication.
This paper presents the different methods and processes of the implement of image-position technique, by which the user can locate the probe quickly and accurately during the process of circuit-fault-diagnosis. The article introduces the fault diagnosis program that can retrieves information from fault dictionary, presents the image-position technique of BMP and PCB and proposes the usage of the significant function and controls are given which can used to locate the probe accurately. During the test, the real circuit graph guides the user and points out the fault location, thus raising the efficiency of fault removal.
This paper describes Two new solutions of parallel integration module and OPC componential integration module are presented. The core idea of parallel integration module is that BMS network is divided into management network and monitor network with its subsystems running in monitoring network and system integration database running in management network. The integration of each subsystem and management network can be divided into two types according to the additional application program. The first one is to realize integration through industrial standard protocol. Another one is to develop gateway software by using application program of API/Net API function provided by system to ensure access to database when both communication sides do not have one standard protocol interface. The core idea of OPC componential integration module is to develop an OPC server running between central monitoring and control station of BMS and each subsystem to ensure the same standard OPC being used by OPC server and OPC client and direct intercommunication.