近些年來，隨著我國居民住宅建設的迅速發展，城市樓房所用電能表的數量也日益增多，F行建筑電氣設計常將單塊電能表集中掛成一面“表墻”，體積較大，維護管理不便[1]。如在智能小區、學生公寓等場所，分戶計量時每層需安裝多塊電表，
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給施工、抄表、控制等帶來諸多困難。本文設計出一種計量精度高、功能全、性能可靠的多回路電能管理終端，并已經在實際中應用中得到了肯定。
1 功能介紹：
本文設計的多回路電能管理終端的主要包括以下功能：
計量：可計量每個回路的尖、峰、平、谷各時段的電能及總電能，精度為1級。
檢測：實時檢測各回路的相電壓、有功功率、無功功率、功率因數、電壓頻率等。
設置：可以自由設置復費率的時段、時間及通訊參數。
顯示：實時顯示各回路的用電量。
通信：通過RS485接口進行遠程抄表，可支持Modbus與DL/T 645-2007協議。
2 設計方案
本終端的設計包括硬件設計與軟件設計兩個部分。
2.1硬件設計
主控部分硬件包括：MCU、LED數碼顯示、時鐘電路、RS485通訊、按鍵輸入。其中，顯示界面采用的是LED數碼管，用戶可以通過輪顯顯示來了解當前的使用電量和剩余電量；通訊采用兩路RS485，一路為主控模塊與電腦、通訊管理機等設備之間的通訊，另外一路為主控模塊與計量模塊之間的通訊。
計量部分硬件包括：計量芯片、鐵電存儲、磁保持控制電路、有功脈沖輸出、信號輸入。其中，計量芯片對電壓、電流信號分別進行采集，并將有功電能數據存儲至鐵電中，用于后續數據的查看、對比。每個計量部分和主控部分之間采用RS485通訊，以進行數據處理和控制。多回路計量終端采集到的電能最終會存儲至鐵電中。具體的硬件處理流程如圖1所示。
KLA-Tencor AIT 2 4-Channel Motor Control 261408 working
KLA TENCOR IMAGE DATA STORAGE SYSTEM 710-612545-004/?AA
KLA-Tencor GSI Lumonics X-Y Scanner PCB CCA-10069 Pair
KLA-Tencor MO-76A Pulizzi Power Dist. Unit PC2425 Used
KLA-Tencor High Voltage Control Module 52-1081
KLA-Tencor AIT 2 GPIO Board 386065 working
KLA-Tencor AIT 2 MMD Analog Board 565040 working
KLA Tencor Ultrapointe Laser Imaging System LIS-1010
KLA/Tencor/Toky?o Electron VIP Card Board TEL
KLA Tencor Camera Timer 710-714647-00
GSI Lumonics KLA-Tencor Quantox Board CCA-10069
KLA-Tencor Dalsa CCD Camera 750-061019-00 untested
KLA-Tencor AIT 2 U500 Control Board 690D1470 working
KLA-Tencor Quantox High Voltage Control Module 52-1081
KLA-Tencor AIT 2 Upper Opto-Mech NNC 0024755-001
KLA TENCOR DIGITAL DEFLECTION GENERATOR 701-603180-003
KLA-Tencor CRS2000 Olympus Microscope Turret BH3-5NRE-M
KLA-Tencor M2/M3 Servo Controller PCB 0038746-001 Used
KLA-Tencor X-Y Scanner PWA PCB E11-13209-7 Rev D
KLA-Tencor XP Objective Lens 0110155-000 Untested
KLA-Tencor HPR-340 U-Joint Board 454788 working
KLA-Tencor 486i Controller 0020839 Rev.AA working
KLA-Tencor Quantox Head Control Module 64020 working
KLA-Tencor Spring Clamp Laser Servo Detect. 0124592-000
KLA-Tencor Marway 230V Power Strip 0046059-000 New
KLA-Tencor SM300 Monochromator 58-0834
KLA-Tencor AIT Upper Opto-Mech 0024755-000 working
KLA-Tencor Computer Interface Board 307793 working
KLA-Tencor F5X Disp Analyzer 0105208-000 Untested
KLA-Tencor AIT 2 MMD Analog Board 565040 working
KLA-Tencor Programmable Assembly 20009243A
KLA-Tencor 395005 Tropel 14X CYL Telescope-1 AIT2 New
KLA-Tencor Scintillator W/ Case 780-08986-000 Untested
KLA-Tencor Yaskawa Handler End Effector 0077427-002
KLA-Tencor AIT 2 Collector Assy. 0074311-000 working
KLA-Tencor Comet AMS Low Mag 0104920-003 Refurbished
KLA-Tencor Precision Concave Mirror R20m
KLA-Tencor Quantox Distribution Module 64060 working
KLA-Tencor 64060 Distribution Module working
KLA-Tencor 0044829-000 Asyst LinkManager 9700-8533-01
KLA-Tencor SP2 Filter Assy. 0067079-000 untested
KLA-Tencor TRT/OPT Control PCB 001009 working
KLA-Tencor Quantox 64000 Cooling Module working
KLA-Tencor Left Cassette Nest, 5.2 740-694842-000 New
KLA-Tencor 2132 9KVA Power Line Conditioner 750-653120
KLA-Tencor F5 Flipper Actuator 52-0837 New
KLA-Tencor Quantox 64000 Cooling Module working
KLA-Tencor Tropel 15X Objective 29-0260 untested
KLA-Tencor Computer Station U00874 working
KLA-Tencor DC Power Supply 0057847-000 working
KLA-Tencor 0027106-002 Dolan-Jenner Fiber-Lite A241
KLA-Tencor Quantox GSI Scanner PCB 3002004 working
KLA-Tencor Glentek Electronics Analyzer 0045454-000
Pulizzi Z-Line KLA-Tencor Quantox Power Supply PC2425
KLA-Tencor UV1XX0 Camera 0049115-000 Used
KLA-Tencor AIT 2 PSF Driver Board 556661 working
KLA-Tencor M1 Mounted Assy, L7, NNC, AIT3 556556 New
KLA-Tencor 8100 200mm XY Stage 780-10480-001 working
KLA-Tencor AIT 2 Illumination Board 556700 working
KLA-Tencor O/S Actuator Elevator 720-01488-003 Untested
KLA-Tencor Retrofit Optics Beamsplitter 0099602-001 New
KLA-Tencor CIP2 SE Head Replacement 0115724-001 Bad
KLA-Tencor Rotary Transfer Arm 720-07360-000
KLA TENCOR LOADER BRUSHLESS DC SERVO MOTOR RELIANCE
KLA-Tencor NGP, SP2 Mask Changer Assembly 0053106-002
KLA-Tencor AIT 2 Keyboard Breakout 547220 working
KLA-Tencor SLX Preamp Assy. 775-334268-001 untested
KLA-Tencor LW Obl Line Form Flexure 0079640-002 Used
KLA-Tencor 29-0259 Tropel 1X Lens Untested
KLA-Tencor SM300 (SpectraMap) Thin Film Mapping Tool
KLA-Tencor Shipping Energy Filter Assmbly 720-12647-002
KLA-Tencor 370-21860-001 Pwr Arcts Power Supply PS-1122
KLA-Tencor CRS 2000 Optical Module 3008528 working
KLA-Tencor Preamp Assy. 775-334186-000 untested
KLA-Tencor 780-08568-000 Pac Sci Piezo Controller P-265
KLA-Tencor Aperture Heated Rod 781-23234-002 Used
KLA-Tencor AIT 2 Front Collector Assy. 0032131-001
KLA-Tencor Laser Mod 0124593-000 New
KLA-Tencor Lower Octopole/Wein Lens 780-14108-000
KLA-Tencor AIT 2 Rear Collector Assy. 0032129-000
NEAT 330UP Motion Controller KLA-Tencor CRS1010
KLA-Tencor Optics RF Bench Assy. 740-058089-00 untested
KLA-Tencor Transfer Arm Motor 400-08157-001 untested
KLA-Tencor Newport AIT3 Mask Changer 556190 New
KLA-Tencor Laser Servo Detector 0062032-000 Refurbished
KLA-Tencor Newport AIT3 Mounted Assy L6, NNC 556513 New
KLA-Tencor Aperture Heated Rod 781-23234-001 Used
KLA-Tencor Sharp 15 LCD Monitor 0095643-000 Used
KLA-Tencor Mark II Right Top Plate 740-680567-000 New
KLA-Tencor M1 3XX-I Active Mirror 760-321700-001 New
KLA-Tencor AIT 2 Timing Generator Board 0053946-000
KLA-Tencor 0092173-001 Hamamtsu L9519-01 D2 HB Lamp New
KLA-Tencor Lower Octopole/Wein Lens 780-14108-000
KLA-Tencor 5200 Dual Aperture Assy 720-470028-00 Used
KLA TENCOR LAMP POWER SUPPLY CONTROLLER IGNITOR ORIEL
KLA-Tencor Newport NNC, AIT3, XP Polarizer 0044232-001
KLA-Tencor Comet Pneumatic Box 0104921-001 Untested
KLA-Tencor MGF2 Analyzer Assembly 0045755-000
OAC PRECISION CRYSTAL OSCILLATOR / RF DRIVER KLA TENCOR
KLA-Tencor Nikon Box Door Opener 750-059211-001 Used
KLA-Tencor AIT3XP APS NIC Tower 0034693-001 New
KLA-Tencor UV Mask Polarizer NNC AIT 0023725-000
KLA-Tencor Nikon Box Door Opener 750-059211-001 New
KLA-Tencor Ref. Light Preamp 775-322364-000 untested
KLA-Tencor AIT APS Tower/Center Block 0071149-001 Used
KLA-Tencor Cannon Box Magazine Assembly 740-060658-001
KLA-Tencor AIT Rear Collector Assy. 0074307-000 working
KLA-Tencor AIT UV Laser Servo Detector 0099586-001 New
KLA-Tencor Surfscan 6200 Wafer Surface Analysis System
KLA-Tencor 3XX-1 Image Rotator 760-321260-000 New
KLA-Tencor 3XX-I Refl. Light Detect.760-3213?99-000 Used
KLA-Tencor CRS-1010S DC Power Supply working
KLA-TENCOR Assy: 710-612095-002 REV.02 S/N.GA31010038
KLA-Tencor CRS1010 Laser Power Board 000327
KLA-Tencor CRS 2000 Mirror Assembly working
KLA-Tencor Newport AIT2 Air Slit Assembly 393215 New
KLA-Tencor 10KV Floodgun Assembly 720-23189-000
KLA-Tencor AIT 2 MMD Power Unit 0038216-001 working
KLA-Tencor AIT Laser Servo Detector Assy. 0099586-000
KLA-Tencor 5300 AMS Assembly 720-480036-003 untested
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