Crossbox simultaneously promotes Imote2 embarked a
formidable PXA271IntelXScale processor chip, also may establish the
low voltage (0.85V), the low frequency (13MHz) the pattern, also may
establish to the 416MHz frequency may promote the processing pattern.
Compared with formerly the wireless sensor network hardware
platform, Imote2 has provided the more memories resources, including
256KB SRAM, 32MB SDRAM and 32MB Flash. On chip I/O and the sensor connection extremely
facilitates Imote2 to carry on two times of developments and the
integration, greatly enhanced the Imote2 compatibility. Imote2
provides general and the nimble platform may the widespread
application to the picture, acoustics, the earthquake and the
vibration signal processing. The IEEE802.15.4 standard radio
frequency and the 2.4GHz band width, 16 channels, the 250kb/s data
output rate is compatible. In sets the 2.4GHz antenna can
achieve 30m the standard receive scope. Enhances outside the
receive scope passable SMA articulate to set at the antenna. With all the new technology which develops is being same,
besides the cost question, the wireless sensor network product still
lacked a unified standard solution mutually operational question, this
kind of situation has similarly become the wireless sensor network
development disadvantage factor. Uses TinyOS which Burkley
University of California develops to have the help. Crossbow
MoteWorks the software and hardware wireless Mesh network developed
the platform to use TinyOS, it supported based on the
IEEE802.15.4/ZigBee standard is fast, nimble and the open style
design. This opening overhead construction can cause the high
intelligence multipurpose transmitter dynamic and reliable carries on
the self- adjustment, in order to in any time, any place comes
effectively the gain and the transmission physics data. The wireless sensor network lives at home the application
in the intelligence also to place the great expectations, it will be
able to realize the people about "the future hut" many tentative
plans. For instance automatically regulates room temperature
with the light, monitors in the living room in the bedroom the
situation and so on. Although the IRIS pitch point cost already
fell to 300 Yuan in, but still was unable to achieve the price
sensitive home use market the anticipation. Crossbow Qin Fei
indicated that, the wireless sensor network enters the family is an
inevitable tendency, but still needed the long process. |