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| 型号： | CC2431DK |
| 厂商： | Texas Instruments |
| 文件页数： | 6/33页 |
| 文件大小： | 0K |
| 描述： | KIT DEV FOR CC2431 |
| 标准包装： | 1 |
| 系列： | SmartRF® |
| 类型： | 收发器，802.15.4/Zigbee |
| 频率： | 2.4GHz |
| 适用于相关产品： | CC2431 |
| 已供物品： | 12 个板，12 个模块，12 根天线，线缆，文档 |
| 相关产品： | CC2431ZRTCRG3-ND - CC2431ZRTCRG3 CC2431ZRTCG3-ND - CC2431ZRTCG3 296-32621-ND - IC SOC 802.15.4 SENSR NEW 48QFN CC2431ZDK-ND - CC2431ZDK CC2431RTC-ND - CC2431RTC 296-21980-1-ND - IC SOC IEEE 802.15.4/ZIG 48-VQFN 296-21980-2-ND - IC SOC IEEE 802.15.4/ZIG 48-VQFN 296-21940-6-ND - IC SOC 802.15.4 SENSR NET 48-QFN 296-21940-1-ND - IC SOC 802.15.4 SENSR NET 48-QFN 296-21940-2-ND - IC SOC 802.15.4 SENSR NET 48-QFN |
| 其它名称： | 296-23004 CC2431DK-ND |
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CC2431
5.
System overview
For an introduction to the location engine please see application note AN042,
document number SWRA095. The note is available from www.ti.com.
Figure 1: Location Estimation
The location algorithm used in CC2431 Location Engine is based on RSSI (Received Signal
Strength Indicator) values. The RSSI value will decrease with increasing distance. An
important parameter related to the performance of the location estimate is the absolute
tolerance of the RSSI measurement of the RF-transceiver. This is specific to our transceiver
and is provided in the datasheet. The main feature of the CC2431 Location Engine is that the
location estimation is performed in each Blind Node, hence the algorithm is decentralized.
This reduces the amount of data transferred on the RF interface, since only the calculated
position is transmitted.
The location engine implemented in CC2431 can use up to 16 Reference Nodes for each
calculation. The data that is necessary to do a calculation are X, Y and RSSI values for each
of the Reference Nodes used in the system setup. In addition it needs two RF transmission
parameters (A and N), please refer to application note AN042 for a description of each
parameter.
5.1 Grid
To map each location to a distinct place in the natural environment, a two dimensional grid is
used. The direction will, in the following, be named X and Y. The CC2431 Location Engine
can only handle two dimensions, but it’s possible to handle a third dimension in software (i.e.
to represent levels in a building). The point named (X, Y) = (0, 0) is located in upper left
corner of the grid.
SWRU076D
Page 6 of 32
相关PDF资料 |
PDF描述 |
|---|---|
| CC2480A1RTC | IC Z-ACCEL ZIGBEE PROC 48-VQFN |
| CDJB3 | JUNCTION BOX COLORDRV 1/IN 3/OUT |
| CEA-06-062UR-350 | STRAIN GAGE 350 OHM RECT |
| CEA-06-062UT-350 | STRAIN GAGE 350 OHM TEE |
| CEA-06-062UW-350 | STRAIN GAGE 350 OHM LINEAR |
相关代理商/技术参数 |
参数描述 |
|---|---|
| CC2431EMK | 功能描述:Zigbee/802.15.4开发工具 CC2431 Eval Mod Kit RoHS:否 制造商:Silicon Labs 产品:Development Kits 工具用于评估:EM35x 频率:2.4 GHz 接口类型:USB 工作电源电压: |
| CC2431-RTB1 | 制造商:TI 制造商全称:Texas Instruments 功能描述:System-on-Chip for 2.4 GHz ZigBee/ IEEE 802.15.4 with Location Engine |
| CC2431RTC | 功能描述:RF片上系统 - SoC CC2431 SoC 2.4 GHz Transceiver Chipset RoHS:否 制造商:Texas Instruments 类型:Zigbee 处理器系列:CC253 核心:8051 最大数据速率:250 Kbps 输出功率:4.5 dBm 灵敏度:- 97 dBm 工作电源电压:2 V to 3.6 V 接收供电电流:24.3 mA 传输供电电流:33.5 mA 程序存储器大小:256 KB 工作温度范围:- 40 C to + 125 C 封装 / 箱体:QFN-40 |
| CC2431RTCR | 功能描述:RF片上系统 - SoC CC2431 2.4 GHz Chip in Tape and Reel Pkg RoHS:否 制造商:Texas Instruments 类型:Zigbee 处理器系列:CC253 核心:8051 最大数据速率:250 Kbps 输出功率:4.5 dBm 灵敏度:- 97 dBm 工作电源电压:2 V to 3.6 V 接收供电电流:24.3 mA 传输供电电流:33.5 mA 程序存储器大小:256 KB 工作温度范围:- 40 C to + 125 C 封装 / 箱体:QFN-40 |
| CC2431-RTR1 | 制造商:TI 制造商全称:Texas Instruments 功能描述:System-on-Chip for 2.4 GHz ZigBee/ IEEE 802.15.4 with Location Engine |
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