Hello, everyone!
Today, I would like to share with you the CCU and Gateway design of WBAN (Wireless Body Area Network) technology.
Figure 1. The system is a wireless body area network. The gateway CCU collects and monitors data from individual wireless sensor nodes on a single human body.
The CCU's principal duty is to gather data from the sensor nodes over a wireless MICS band link and send it to a local or remote PC for some further analysis. 2 CCU devices are required to offer comprehensive WBAN transmission coverage in health centers, as shown in the case in the above Figure 1.
Figure 2. CCU-1: A single-use central control unit (CCU).
The first CCU is intended to connect to a computer via USB port (Above Figure 2), while the second CCU is utilized as an intermediate device (Below Figure 3) that provides a second wireless link for a longer-range wireless sensor network. The latter case is much more effective for large healthcare institutions and serves as a transitional device.
Figure 3. CCU-2: Intermediate Central Control Unit (CCU). This equipment is portable and shared by multiple patients. It has two directional wireless links and a dual wireless transceiver.
While such CCUs could be used to observe many patients, the very first CCU type (CCU-1) could also be utilized privately at residence or in a hospital room to observe a single patient. To synchronize all actions, the sensor nodes/CCU architecture requires a microprocessor and a wireless transceiver.
The wireless link (AMI52100 IC) by AMI semiconductor will be used for MICS band creation (we further used CC1000 in some sensor nodes to produce 433 MHs ISM as well as WMTS bands for sensors-CCU wireless connection) as well as the microcontroller PIC16F87 has been used in the CCU-1/sensor nodes.
I will continue to share on this article in the following post.
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