Digital Swimmer Safety System

摘要

A digital swimmer safety system has a programmable radio communications device, such as a smart phone, in communication with a personal radio transmitter on a swimmer. The communications device established a digital connection with the radio transmitter and starts a timer if the signal is lost. The signal may be lost due to submergence of the transmitter in water. If the timer exceeds a threshold, then an alert is displayed. The communications device is configured to continue monitoring the swimmer in background mode so that the user of the device can run another app. The system can be configured so that multiple swimmers can be monitored by the same communications device and different threshold times can be set for each swimmer depending upon their swimming ability.

主权项

1. A digital swimmer safety system comprising a first programmable radio communication device and a first personal radio transmitter wherein:
a) said first programmable radio communication device comprises:
i) a first radio transmitter;ii) a first radio receiver;iii) a display device;iv) a first microprocessor;v) a first permanent memory comprising computer readable instructions to physically cause said first programmable radio communication device to carry out the monitoring steps of:
1) receiving a first digital advertising signal from said first personal radio transmitter;2) establishing a first connection with said first personal radio transmitter in response to said receiving of said first advertising signal;3) initiating a first timer in the event that said first connection is lost;4) outputting an alert to said display device in the event that said first timer exceeds or equals a first alert time; or5) resetting said first timer in the event that a second advertising signal is received from said first personal radio transmitter before said first timer exceeds or equals said first alert time; and wherein b) said first personal radio transmitter comprises:
i) a second radio transmitter;ii) a second radio receiver;iii) an antenna;iv) a switch;v) a second microprocessor;vi) a second permanent memory comprising computer readable instructions to physically cause said first personal radio transmitter to carry out the steps of:
1) turning on in response to the activation of said switch;2) broadcasting via said antenna a modulated carrier wave digital advertising signal in response to being turned on;3) switching to connected mode when said first programmable radio communication device responds to said advertising signal;4) switching back to said advertising signal in the event that said connection is broken; and wherein c) said first programmable radio communications device is configured to run said monitoring steps in background mode such that a user of said communications device may run a different app without interrupting said monitoring; and wherein d) said carrier wave has a frequency that is attenuated at least 5 dBm per cm of water.