System background
Reform and opening up three decades, the level of productivity of our country has been considerable development has brought rapid progress of urbanization of the population, the rapid growth of China's GDP, making the high-rise row upon row of large and medium cities. Continue to grow taller buildings and, inevitably bring to improve energy consumption. Therefore, energy-efficient buildings became a top issue in the construction industry. Over the past decade, along with the continuous improvement of revolutionary advances in software technology and electronic technology, produced by a variety of electronic devices, combined with software technology, the energy consumption of the building real-time monitoring and management. To monitor energy consumption in buildings through computer systems, it has become a necessary means of building energy management.
Systems Network Architecture
Data acquisition layer
● monitoring various energy measurement means water, electricity, gas, etc., for example, power quality meters, power meters, water meters, gas meters, cooling meter, heat meter, air-conditioning controllers, lighting controllers,
● a variety of monitoring devices within the acquisition layer must have a data communication function, it is the most common RS485 interface
● a data acquisition unit in the monitored layer various data via the RS485 interface, is transmitted to the communication manager (or server serial), connected to the data server and the management software through a port on the communication manager
Network communication layers
● network communication layer determines data acquisition layer collected data to the data server means by which
● The number of the network communication layers investment, optical communication may be employed in various ways, 4G / GPRS wireless communications, RJ45 Ethernet interface communication etc.
● internal network often uses authentication, data encryption, etc. to ensure the security of data transmission
System Management
● in the core application software, including database systems, Web servers, the data collected by the acquisition layer, and by sorting data network layer stored in the server, monitoring, by the printer into the output report, or by screen wall publicity of certain data
● When some data abnormality occurs, then the output relay signals on the meter data collection layer, a respective control opening and closing of the valve or loop
● You can send text messages or e-mail on the phone or by mail outside the network
System configuration FIG.
System functions
monitor
By monitoring test, get a variety of real data
● Classification consumption: water, electricity, coal, gas, heat, cold
● breakdown of energy: air conditioning, lighting, power, special power
● sharing power consumption: day, night
● building energy consumption: a different floor
● energy sector: different departments
● Device power consumption: key equipment
analysis
With the software, the analysis of the collected real data to understand the state of the entire energy consumption of buildings and various departments, differences among the various buildings and the energy consumption of different time periods.
● energy consumption rankings
● energy report
● energy curve
management
Learn the details of the building energy consumption, the development of appropriate rules and regulations, human intervention high energy-consuming sectors, to reduce energy waste.
● setting energy quotas
● When approaching energy consumption quotas, through SMS alerts
● public consumption, are published monthly high energy consuming sectors
control
Make the necessary automation and control opening and closing of some equipment to reduce energy consumption. It can also monitor the long-term energy consumption data, development of scientific energy-saving programs.
● lighting time switch
● air-conditioning temperature control
● Energy Saving
After the completion of energy-saving data, can be obtained by the monitoring system to verify the real energy saving effect
Data Collector
Throughout the system, data acquisition occupy a very important position, but also the development difficulties of work, consists of three parts embedded hardware, Linux systems, application components.
The hardware composition of a frame is as follows:
If embedded hardware, Linux system, the application is fully developed, R & D investment and stability verification period longer than. Mature and stable embedded core board can greatly shorten the development cycle, improve stability. The advantage of this approach is that the complex circuit design integrated into the iMX6 UL core board and Feiling been ported Linux system Okay, we just need to design a two-layer interface to the floor in accordance with the project requirements, it can be compared to the previous the hardware encryption system development cycle shortened from six months to one month and a half.
iMX6UL industrial core board
FETMX6UL-C is a core board based on the NXP ARM Cortex-A7 iMX6Ul low-power processor architecture design, running at 528MHz, the two core board quality 80PIN board to board connector design, unique power management architecture phase lower power consumption than the ARM9 family core board. The core board feature-rich interface resources, up to 8-way UART, 2-channel Ethernet, 2-way and other industrial CAN bus interface. Severe temperature testing level to ensure the stable operation of the core board -40 ℃ ~ + 85 ℃ environment.
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FETMX6UL-C core board Nand version