Blue Star

Friday, 27 May 2022 10:47

Bluetooth LE Direction Finding for Tracking Node Position

This example shows you how to track the 2-D or 3-D position of a Bluetooth® low energy (LE) node by using Bluetooth® Toolbox.

Using this example, you can:

Simulate direction-finding packet exchange in the presence of radio frequency (RF) front end impairments, path loss, and additive white Gaussian noise (AWGN).
Track the node position by using Bluetooth direction-finding features and position estimation techniques.
Improve the location accuracy by using a Kalman filter from Sensor Fusion and Tracking Toolbox™.

Published in Matlab Simulink Bluetooth Toolbox

Friday, 27 May 2022 07:59

Bluetooth Protocol Stack

The Bluetooth^® Special Interest Group (SIG) [1] and [2] defines the protocol stack for Bluetooth low energy (LE) and Bluetooth basic rate/enhanced data rate (BR/EDR) technology. The fundamental objectives of these specifications is to develop interactive services and applications over interoperable radio components and data communication protocols.

Published in Matlab Simulink Bluetooth Toolbox

Friday, 27 May 2022 07:26

Bluetooth Low Energy Communication

Bluetooth Low Energy (formerly known as Bluetooth Smart) is a wireless communication protocol that uses Bluetooth with low-power peripheral devices. These peripheral devices include fitness trackers, health monitors, and personal electronics such as smartwatches or wireless headphones.

Published in Matlab Simulink Bluetooth Toolbox

Friday, 13 May 2022 16:20

电动汽车上CAN报文解析

常用车辆CAN总线通讯协议，大多直接采用SAE-J1939的形式制定。电动汽车首先遇到了电池系统，电机系统等新加入电气需要重新设定PGN码等问题。CAN协议始终处在诸侯割据的状态。在过去的几年中，国家及相关机构也一直在对电动汽车的CAN通讯协议进行研究，希望形成统一的协议体系。统一的CAN协议，首先是零部件供应商的福音。当前主流主机厂，每家都有自己的整车通讯协议，各个供应商，需要根据整车厂的定义，修改零部件的CAN协议。

制定电动汽车的CAN协议，基本的思路是在SAE-J1939的基础上，根据自身电动汽车的需求，做出必要的调整。

Published in Automobile communication protocol

Friday, 13 May 2022 16:01