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Introduction
BSC-50
is an ultra low power, battery powered controller unit for alarming
using SMS. The unit incorporates a quad band GSM/GPRS modem, and
a serial RS-232 port. Two device versions are prefigured: BSC-50-D
with 4 digital inputs and BSC-50-S/E with 2 digital inputs, 2 analog
inputs and an excitation output for powering external transducers.
An
ultra low power microcontroller is utilized for alarm condition
detection, subsystem power switching and overall system control.
The unit incorporates a Lithium Thionyl battery supplying system
operation for over 10 years.
Modes of operation
Modes
of operation include power network independent battery operation
and external power adaptor supply operation, with the internal battery
used for uninterrupted operation in case of power failure.
During battery supplied operation, only the low power microntroller
is awake. The microcontroller switches (on/off) the power consuming
GSM modem in case of an alarm occurence or during periodical messaging
and other subsystems as the external sensor excitation and analog
conditioning circuits for sampling the analog inputs.
Typical applications
- Power network fault monitoring
- Environmental telemetry
- Waste water management
- Security systems
- Asset management
- M2M systems
Measurements
The
digital inputs are scanned in closed loop by the microcontroller
for detecting an alarm condition. The alarm condition (closed or
open external contact) is user defineable.
Analog input scaling and alarm limits are user definable. The external
analog transducer excitation and the respective analog sampling
period are also user definable and affect the battery life according
to the transducer power supply requirements.
Transducer
excitation
The
unit can supply external sensors with 3.6V/400mA or potential
free 12V/80mA over
a DC-DC converter.
Alarming
& messaging
SMS
announcements include alarm induced messages and periodical messages
for verifying unit availability. The unit supports discrete recipient
alarming for several users.
Alarm message texts are user defineable.
Setup
and programming
The
unit can be programmed locally through the serial port or remotely
via SMS by using simple ASCII configuration commands. The command
set features commands for configuring input alarm parameters, scaling
parameters and alarm limits, timing parameters and defining user
groups. Remote setup SMS messages are accepted during the periodical
message processing.
Enclosures
The
standard enclosure is a metallic enclosure (IP40) with excellent
EM shielding characteristics for indoor use. An optional polycarbonate
enclosure (IP67) for outdoor use is available on demand.
Technical
specifications
 |
Power
supply: |
internal
13.0 Ah Lithium Thionyl battery or external 12-30V power adaptor |
|
Consumption |
40uA (normal
operation)
AV 40mA (alarm messaging)
|
| Digital
inputs: |
potential
free contact inputs |
|
Analog
inputs: |
0-1V, 0-20mA differential input, 10
bit resolution
|
| Transducer
excitation
|
3.6V/0.4A or potential
free12V/80m |
| Wireless
modem |
Quad
Band GSM (850/900/1800/1900MHz)
GSM CSD 14.4kbps
GPRS Multislot Class 10, Class B
|
| Serial
interface: |
RS232C,
up to 921 kBit/s |
| Indications
|
2 LED, GSM
network status, external power supply indication |
Firmware
features |
Digital
input
alarm state
|
Open or closed contact selection |
| Analog
input |
Scale, alarm limits
selection |
Analog
sample
interval
|
1-9999 minutes |
| Alarming |
on alarm state
of a digital input,
2 alarm limits on an analog input |
| Message
texts |
1-30 characters |
Periodical
Messaging
|
1-99 days |
Messaging
Retries
|
1-99 |
| Retry
intervall |
1-255 |
| Programming |
ASCII command set |
| Remote
setup |
via SMS |
| Local
setup |
via serial port |
|
User
setup |
1-20 users, discrete
recipient
alarming |
Enclosures |
|
Type M
Metallic enclosure IP50,
110x120x50 mm
|
|
|
Type
P
Polycarbonate
enclosure IP 67,
180 x 130 x60 mm
|
Ordering
information |
Code
|
BSC-50-XY |
| X |
D:
Alarming unit with 4 digital inputs. |
S:
Alarming unit with 2 digital inputs,
2 analog inputs and 3.6V excitation. |
E:
Alarming unit with 2 digital inputs,
2 analog inputs and 12V excitation. |
Y |
Enclosure type
M, P |
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