Safety Training Monitoring System of Ski Resort Based on Wireless Sensor Network

Table 4

Transmission test in the snow forest area.

Transmission distance (m)	1	5	10	20	30	40	50	55	60	65	70
Signal strength (dBm)	−36	−65	−74	−78	−82	−87	−91	−93	−95	−96	−97
The amount of data packets sent	100
Receive data volume	100	100	100	99	96	92	90	81	54	23	8
Data loss rate%	0	0	0	1	4	8	10	19	46	77	92