BATTMASTER Technical Datasheet v0.8
BATTMASTER Technical Datasheet v0.8
BATTMASTER Technical Datasheet v0.8
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TABLE OF CONTENTS
1
2
3
4
5
6
7
1 Revision history
Revision
0.4
0.5
Date
20/05/2012
01/06/2012
Author
RZ
RZ
0.6
21/06/2012
RZ
0.7
25/09/2012
RZ
0.8
18/10/2012
RZ
Comments
-First draft
-Adjusted layout
-Added customization on general description
and features
-Corrected sampling rate time in section 4
-Corrected formatting
-Reformatted general description
-Corrected general characteristics
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2 General description
BATTMASTER is a wireless battery monitoring system that measures and logs the voltage,
internal resistance, temperature and current of lead acid batteries (2, 6 or 12 V nominal voltage)
as individual blocks or within a battery string. It can operate as a standalone system or in
conjunction with a PC/LAN.
The modular architecture of the system has the benefit to be easily customizable to log other
parameters on request (i.e. pressure, humidity, etc.).
BATTMASTER is composed of 4 components:
Figure 1: CU
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A typical system is composed by one CU, one IDAM for each string of batteries and one DAM
for each battery. A simple system composed of one single string of batteries is shown below.
Each CU supports up to 1024 DAMs and 64 IDAMs.
CU
IDAM
DAM
Battery
PC
Mobile phone
RF link
USB
10/100Mb Ethernet
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4 Functional description
Each DAM measures the voltage and temperature of the battery with a sampling rate of 10 ms.
All significant data (minimum, maximum, average voltage and temperature, last Ri measured
value, discharge cycles and out of limit voltage, temperature alarms) are stored in the DAM
memory and transmitted to the CU when required.
The IDAM (optional) measures the current of the battery (or string of batteries) and the
discharge cycles. The CU downloads every DAMs stored data with a user settable Acquisition
Interval (AI) on a SD card. After downloading the data, the DAMs memory is erased and a new
set of data is built for the following request.
The Acquisition Interval represents the time between 2 scans of the DAMs modules by the CU.
The minimum recommended value for AI is 1h, because the batteries are slowly changing
systems and there is no need of overloading the database with repetitive information. The
minimum AI value is limited automatically by the system in proportion with the number of
batteries. The system guarantees that no significant data will be lost, independently of the AI
value.
Ri Sampling Interval represents the time between 2 Ri measures. Ri measures starts only if the
specific battery is not in an alarm status.
The user can configure the system to automatically send E-Mail and SMS notification in case of
an alarm or event. Up to 2 E-Mail addresses and 3 cell phones numbers for SMS can be
configured.
By using the BATTMASTER software it is possible to view the actual system status/measures
as well as retrieve the data collected on the SD card for further analysis.
Various zoom/pan operations and user settable graphical parameters are possible.
Exporting the data in various graphical or spreadsheet formats is possible.
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82
5 Components Dimensions
150
46
Figure 6: CU enclosure
I/O
SD
Eject
10/100Mb
Ethernet
SD
DC
JACK
SIM
CARD
GSM
ANTENNA
USB
81
Figure 7: CU connectors
56
21
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185
47
31.5
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6 General Characteristics
CU
Supply input voltage range
Current consumption
Backup power
0.5A max
2X AAA NiMh rechargeable batteries (about 1.5h of backup)
2 x opto isolated, 530VDC, 10mA
Ethernet
- 10/100Mb
- Used for remote configuration and monitoring
- HTTP server and SMTP client
USB2
GSM
- Quad-Band 850/900/1800/1900MHz
- SMS alarms
RF
1.55.5VDC
518VDC
80mA @ 2V
30mA
DAM
RF
Battery
Measures
1.55.5VDC, 1.5%
Ri
1300m, 10% or 1m
Temperature
- 2080C, 2C
Battery connection
518V, 1.5%
IDAM
Supply input range
Current consumption (typical)
RF
Current Range
40A range:
040A, 1.5% or 0.4A
300A range:
0200A, 1.5% or 2A
300A range:
200300A, 2.4% or 3A
Table 4: IDAM characteristics
Note: In order to improve the product specifications may change without prior notice.
BATTMASTER datasheet v0.8
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