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PHY and MAC layers. The working RF are 868MHz for USA, 918MHz for EU and
2.4GHz for World Wide.
Table 1.1: Wireless Specifications
Feature(s)
Data Rate
Power Consumption
Transmission Distance
Connection
Connection Speed
Extendibility
Reliability
1.1.2
Wireless Sensor Network
The Wireless Sensor Network is based on the IEEE 802.15.4 standard and inherits
all the characteristics. Coordinator, Router and End Device (or called End Node) are
the basic components to perform the PAN.
A coordinator is the data collection center in a PAN and also plays as a gateway to
transfer and translate wireless data to other interfaces, such as RS-232, RS-485,
Ethernet and so on.
A router is a wireless repeater to enhance the wireless signal and a wireless router to
select optimized path for wireless communication between coordinator and end
nodes.
An end node is a wireless remote I/O for data acquisition. The data acquires from
sensors or devices can be transmitted through it. The end node can communicate
with coordinator directly or via a router to coordinator.
As traditional network, the Wireless Sensor Network provides the star, tree and mesh
topologies for various applications.
1.1.3
Low-power Consumption and Battery-Powered Design
ADAM-2000 is designed as a standalone device for applications that require long-
time operation without maintenance. Therefore power consumption taken into con-
sideration during its design. The ADAM-2000 not only follows the IEEE 802.15.4
standard for low-power consumption wireless communication, but also optimizes the
peripheral HW and FW design to achieve the uA power consumption: making it capa-
ble of being powered using 2 AA Alkaline batteries.
1.1.4
Sensor Embedded Design
Sensor embedded design makes the ADAM-2000 even better in some specified and
compact applications. The ADAM-2031Z integrates a temperature, humidity. The
module is suitable for building automation, Green-house, environment applications
which require the specified sensors. With the batteries installed into the ADAM-
2031Z no extra wiring is required and the two modules can work independently.
1.1.5
Wireless Signal Indicator
There are LEDs in the front of the panel to display the status of device. The LEDs can
indicate the device's status, wireless signal strength, battery power level and error
conditions. With the LEDs, users can easily see the status of the ADAM-2000 by
pressing a button on the side of the ADAM-2000.
IEEE 802.11b
Bluetooth
11Mbps
1Mbps
Hours (High)
Days
100m
10m
Very Complex
Complex
Up to 3 seconds
Up to 10 seconds
Roaming possible
No
Low
High
3
ZigBee
250Kbps
Years (Low)
70m~300m
Simple
30ms
Yes
High
ADAM-2000 Series User Manual
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