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Beijing Bona Electrical Limited by Share Ltd.
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  5. Model DJGJ23-BN01 - Concentrator

Model DJGJ23-BN01 -Concentrator

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DJGJ23-BN01 Concentrator combines modern communication technology, computer hardware & software technology, power marketing and many other technologies. It can automatically copy the data from power meter and acquisition terminal, apply unified storage, and transmit data to primary station of intelligent meter-reading management system through GPRS / CDMA, MODEM telephone, cable and other ways to realize remote automatic meter-reading function. Concentrator has 32-bit ARM microprocessor with strong real-time capability and extended redundancy. Micro-power wireless mmodule adopts intelligent Ad Hoc network ,which is not only suitable for meter-reading and designed by arithmetic, but saves system resource and improves speed of communication response. Meanwhile, the module supports data fusion function, which compresses & integrates the user data to adapt wireless network transmission.

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1. Software
The design of terminal software is based on Linux Kernel 2.6 and supports multi-thread with high real time control, stable and reliable performance, configured yaffs2 Crash-proof Journal File System to protect data loss.
It adopts modular design, divided into communication resource management, data file management, communication protocol bank, uplink communication application, meter-reading application, exception handling, remote upgrades and other functional units. The maintenance and upgrade of these functional units can be performed separately.The terminal supports many communication protocols, including DL/T645-1997, DL/T645-2007, Wasion Protocol, Haoningda Protocol, IEC1107, ABB, EDMI, DLMS, Guangdong Protocol, Q/GDW1376.1-2013 and etc.
The Terminal not only supports optional function through scripting operation mode, but supports automatic identification of communication channel, such as GPRS/CDMA/3G/Ethernet. Display interface supports scripting organized mode.
2. Hardware
Terminal hardware adopts 32-bit ARM9 Kernel MCU, 64M bytes of memory and 128M bytes of flash, which can store six months’ curve data about electrical energy, voltage and current.
The uplink communication units use modular design and support GPRS/CDMA/3G/Ethernet with impact protection, suitable for hot-swapping.Wireless network adopts the modules from international mainstream manufacturers, including Cinterion(SIEMENS), Telit (Italy) and etc. 3G network supports WOW of China Unicom(WCDMA / HSPA), E-surfing of China Telecom(CDMA2000/EVDO), G3 of China Mobile(TD-SCDMA) and TD-SCDMA-based McWill.
Centralized meter-reading can uses many ways, such as power line carrier, short-range wireless and RS485 Bus. It adopts modular design with impact protection, suitable for hot-swapping.
It uses LED Panel Display of 160x160 lattice, showing 10x10 Chinese characters with GB2312 standard font, configurating six buttons, which can check local setting & data, parameter, status and other information.
The terminal internally installs a set of AC analog sampling apparatus, capable of accurately measurement of voltage, current, power, energy and other data, as well as judgement and recording the abnormal state in grid, such as decompression, phase loss, flow loss and anti-phase.
3. Structure
The structure fully meets specification requirements of SGCC, PC resin for shell material, PPS resin for terminal blocks, lead brass HPb59-1for terminals.