Fire signal communication, particularly in the form of smoke signals, is one of the oldest forms of long-distance communication. It is a visual method used over vast distances, with its origins dating back thousands of years across various cultures.
Historically, smoke signals have been used to warn of danger, entertain guests, and mark significant societal changes. For instance, Native Americans and ancient Chinese civilizations notably utilized fire for transmitting messages. In these cultures, the smoke produced from a fire was manipulated using a blanket to create distinct patterns that could be seen from miles away. This form of communication required a clear line of sight between the sender and the receiver.
The process of sending a smoke signal involves creating a fire and generating a substantial amount of smoke. A wet blanket is then thrown over the fire to interrupt the smoke trail. Once the upward smoke has ceased, the blanket is removed, allowing the smoke to rise again. This process is repeated to generate the smoke ‘puffs’ that make up the message.
There were also certain signals that were shared across many tribes. One cloud of smoke typically meant “pay attention, something is going on here.” Two meant “all is well,” and three signaled “danger” or a call for help.
Despite being an ancient form of communication, elements of fire signaling continue to be relevant today. In the realm of emergency communication and industrial signaling, companies like SigCom design and manufacture emergency communication systems. These systems incorporate several methods of communication, including visual signals, which can be seen as a modern evolution of the traditional smoke signal.
In the context of fire alarm systems, the National Fire Protection Association (NFPA) recognizes four methods of communication from the protected premises to the supervising station. While these methods have evolved with technology, the principle of using a visible or audible signal to communicate a message remains the same.
In conclusion, fire signal communication has played a crucial role in how societies have communicated over long distances. Despite advancements in technology, the fundamental concept of using visible signals to convey messages continues to be relevant in our modern world.