Water sometimes doesn't present a uniform acoustic transmission medium as the velocity of sound propagation and different sign transmission characteristics fluctuate with water temperature, salinity, and depth (or stress) each of which can range with dive location. Therefore, the transmission time between a transmitting unit and a receiving unit vary with the situation of a dive (i.e., based mostly on the water chemical make-up) and typically even with a planned depth for a dive. Such units, systems, and methods ideally could be tailored for use in varying dive places and underneath completely different water circumstances and could be readily adapted to be used with a number of divers and dive groups of varying expertise and expertise. 5 toes for unskilled divers or for harmful situations while a fifty-foot, hundred-foot, 200-foot, and often higher safety range may be set for iTagPro tracker expert divers or comparatively safe diving situations. An alert might be routinely or manually transmitted to and from the dive grasp when the gap is exceeded.

An alarm is activated when the space situation is met by the discovered distance or when activated by a person. The space is then found from the measured time. FIG. 1 is a block diagram usually illustrating the system of the present invention. FIG. 2 is a move chart usually illustrating the strategy of the present invention. FIG. 3 is a block diagram illustrating in more element one embodiment of the means for discovering distance in FIG. 1 . FIG. Four is a circulation chart illustrating in more element the step of discovering distance in FIG. 2 . FIG. 5 is a block diagram illustrating in more detail one embodiment of the means for discovering distance in FIG. 1 . FIG. 6 is a move chart illustrating in additional element the step of discovering distance in FIG. 2 . FIG. 7 is a block diagram illustrating in additional element one embodiment of the means for discovering distance in FIG. 1 .

FIG. Eight is a circulation chart illustrating in more detail the step of discovering distance in FIG. 2 . FIG. 9 is a front view of a diver communication system of the present invention illustrating a show floor displaying dive time, present separation distance settings, present message from dive companion or dive master, and communication frequency together with other options of the diver communication device. FIG. 10 is a side view of the exterior of the diver communication device of FIG. 9 illustrating the battery compartment. FIG. 12 is another useful block drawing similar to FIGS. 11A and 11B illustrating the usage of a dive master communication gadget for ItagPro concurrently monitoring divers in two separately communicating dive teams which are diving utilizing totally different safety distances. FIG. 13 is a entrance view of a dive grasp communication machine or master controller illustrating features just like the diver communication system of FIG. 9 and likewise illustrating options facilitating monitoring and communicating with a number of diver and dive teams.

Additionally, the diver communication system and technique is beneficial for permitting multiple dive groups diving within a single dive space to communicate with each other with out causing communication issues. This discussion includes an explanation of the usage of preset separation distances and the automatic transmission of alert indicators when the determined distance between two units exceeds the preset separation distance for the two units. An important aspect of the invention is the combining of multiple features in a single diver communication gadget and the way the unique combination of those capabilities facilitates effective communication between diving partners and, significantly, between three or extra divers inside a dive group (even when diving in proximity to different dive teams) and between a dive grasp and divers in multiple dive groups. FIG. 1 illustrates a system 2 for alerting when a primary machine four and a second device 6 are separated by a preset distance. System 2 includes a method 8 for discovering a distance 10 between first machine four and a second gadget 6 , a comparator 12 , and an alarm 14 .

System 2 might also embody varied additions equivalent to a person enter interface 16 and a storage system 18 for storing a preset distance condition 20 or executable instructions. First gadget four and second device 6 could also be of any shape or design. System 2 may have quite a lot of uses with each use having its personal desired shape. 2 and second device 6 are conveniently embodied in a shape to be worn on a diver's wrist or connected to the divers Buoyancy Control Device (BCD). Additionally, when used by divers, it could also be desirable for iTagPro portable first machine four and second device 6 to include typical diving options comparable to a dive time indicator or other indicators helpful for divers. 4 and second system 6 are being described as separate devices. Four and iTagPro tracker second device 6 every embrace all the elements of the opposite gadget. In that embodiment, each of two or more divers can be ready to maintain observe of the distance between them.