Author: Peter Chave Revision 0.2 (1/28/2013) Created: 6/17/2013 4:16:00 PM Changed: 6/17/2013 4:16:00 PM Printed: 6/17/2013 4:17:00 PM Title: Lithiumate Lite BMS Raspberry Pi Interface 1/15 D:\Chi Projects\DugBus\Battery Management\Access Lithiumate Lite BMS data on handheld WiFi device-r0.3.docx Lithiumate Lite BMS Raspberry Pi Interface Design Aim: To monitor/query BMS stats from a handheld WiFi device such as an iPhone or a video head unit. Peter Chave ([email protected]), Revision 0.3 – 2/10/2013 EV project: www.stealthbus.net Revision History Revision 0.1 – Initial beta, using php script to directly exec serial reader. Revision 0.2 – Re-written using background process to poll BMS and render html. Revision 0.3 – Cleaned up error reporting, added head unit output. Contents 1 Access Lithiumate Lite BMS data on handheld WiFi device. .................................................. 2 1.1 System description .................................................................................................................................. 2 1.2 On-line simulation.................................................................................................................................... 2 1.3 Hardware overview.................................................................................................................................. 2 1.4 Software structure ................................................................................................................................... 3 1.5 Web page structure: ................................................................................................................................ 3 2 User interface .............................................................................................................................. 4 2.1 Description .............................................................................................................................................. 4 2.2 Common elements .................................................................................................................................. 4 2.3 Main summary screen ............................................................................................................................. 5 2.4 Navigation to sub pages .......................................................................................................................... 5 2.5 Charging information page ...................................................................................................................... 6 2.6 Voltage history......................................................................................................................................... 6 2.7 Amp history ............................................................................................................................................. 7 2.8 Per cell voltage graph page .................................................................................................................... 7 2.9 Per cell temperature graph page............................................................................................................. 8 2.10 Troubleshooting....................................................................................................................................... 9 3 How to build it ........................................................................................................................... 10 3.1 Hardware required:................................................................................................................................ 10 3.2 Easy configuration ................................................................................................................................. 10 3.3 Manual configuration steps ................................................................................................................... 10 4 Modifying install ....................................................................................................................... 13 5 Head unit display ...................................................................................................................... 14 6 Future improvements ............................................................................................................... 14
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Revision History Revision 0.1 – Initial beta, using php script to directly exec serial reader.
Revision 0.2 – Re-written using background process to poll BMS and render html.
Revision 0.3 – Cleaned up error reporting, added head unit output.
Contents
1 Access Lithiumate Lite BMS data on handheld WiFi device. .................................................. 2 1.1 System description .................................................................................................................................. 2 1.2 On-line simulation .................................................................................................................................... 2 1.3 Hardware overview .................................................................................................................................. 2 1.4 Software structure ................................................................................................................................... 3 1.5 Web page structure: ................................................................................................................................ 3
2 User interface .............................................................................................................................. 4 2.1 Description .............................................................................................................................................. 4 2.2 Common elements .................................................................................................................................. 4 2.3 Main summary screen ............................................................................................................................. 5 2.4 Navigation to sub pages .......................................................................................................................... 5 2.5 Charging information page ...................................................................................................................... 6 2.6 Voltage history ......................................................................................................................................... 6 2.7 Amp history ............................................................................................................................................. 7 2.8 Per cell voltage graph page .................................................................................................................... 7 2.9 Per cell temperature graph page ............................................................................................................. 8 2.10 Troubleshooting ....................................................................................................................................... 9
3 How to build it ........................................................................................................................... 10 3.1 Hardware required: ................................................................................................................................ 10 3.2 Easy configuration ................................................................................................................................. 10 3.3 Manual configuration steps ................................................................................................................... 10
D:\Chi Projects\DugBus\Battery Management\Access Lithiumate Lite BMS data on handheld WiFi device-r0.3.docx
3 How to build it
3.1 Hardware required:
Component Cost Example(s)
Raspberry Pi $35 http://www.alliedelec.com/lp/120626raso/ http://www.mcmelectronics.com/product/83-14421&scode=GS401&CAWELAID=1599056700?catargetid=1545764029&cagpspn=pla&gclid=COjs9I_517QCFQeynQodOHoA-g