B+B SmartWorx Wzzard Development Kits Guia De Especificação
SET UP GUIDELINES
As a first step, follow the instructions on the Network Gateway and Edge Nodes quick start guides
contained within the kit. We recommend that the Gateway be configured first. Below is a set of guidelines
that can be followed to set up and test the Wzzard wireless network.
While a Wzzard network is self-forming, self-managing and self-optimizing, there are a few simple, but
critical, pieces that you must include at the planning stage before deploying a Wzzard network. If these
simple steps are followed and verified after installation, the vast majority of deployments will be successful
and will result in reliable networks from which the end users will obtain value from Day One.
The key to planning a quality Wzzard network is to provide the Wzzard Network Gateway with the building
blocks it needs to build a robust network. It is absolutely critical that each Edge Node should have enough
good neighbors. That means that each Edge Node must be able to communicate with as many other Nodes
as possible. As a bare minimum guideline, each Node should be within range of at least three (3) devices.
Placing Nodes within range of only one other device along a maximally spaced string will result in a fragile
network that is prone to Node resets and data loss.
The first hop Nodes are the devices that will be placed within range of the Network Gateway Node, and
within range of each other. As a bare minimum, at least 3 devices in the network should be placed within
range of the Gateway.
Range performance of a wireless device is affected by choices made during hardware integration (e.g.
antenna choice), and even more by choices made during installation. Device placement can change the
effective range by orders of magnitude. At one end of the spectrum, devices placed on elevated poles or
towers with clear line of sight to other Nodes in the network may have a range of 1000m or more. At the
other end, devices placed on the ground or next to large metal objects may have an effective range of 10m
or less. The most accurate way to estimate range is to evaluate range in a real environment using the same
placement methods as will be used in the final installation. That being said, it is convenient to use estimates
(e.g. based on transmit power and receive sensitivity) as a starting point. To begin with, we recommend
that customers plan on their devices working at a spacing of 50m for Nodes with internal antennas or 100m
for Nodes with external antenna for a typical indoor application. These numbers can be doubled to 100m
for internal antennas and 200m for external antennas in a typical outdoor application. Analysis of the first
of several 'typical' deployments can guide the typical range number up or down.
Here are some best practices for deploying Edge Nodes:
It is better to place a device at its final location and then have it join the network than to form
your network ahead of time and subsequently scatter Nodes around the site
your network ahead of time and subsequently scatter Nodes around the site
Guarantee that the device hardware is working before it is installed. This can be done by
pushing the configuration button and checking the status LED. A single blink will occur if Node
is active
pushing the configuration button and checking the status LED. A single blink will occur if Node
is active
Install the Gateway first and then devices at the 1st hop and so on
If you have pre-planned for each Node to have multiple neighbors, it is not necessary to wait
for a Node to join before proceeding to the installation of the next Node. It is more important
to verify that each device is on, and then to verify that all devices have joined at the Gateway.
verify that Nodes have joined to the Gateway by checking the status LED. The status LED still
stop blinking when the Node has successfully joined the network.
for a Node to join before proceeding to the installation of the next Node. It is more important
to verify that each device is on, and then to verify that all devices have joined at the Gateway.
verify that Nodes have joined to the Gateway by checking the status LED. The status LED still
stop blinking when the Node has successfully joined the network.
It is better not to install devices very close to ground. It is preferable to install them at least 1m
above ground.
above ground.
It is better to place devices away from any flat metal objects. (At least 12cm away if possible)