Patent ID: 8139577

Claim:
A data collecting method, comprising: capturing an environmental voice and accordingly generating an audio data by a slave device, wherein the environmental voice includes sound generated from activities of a healthcare receiver; outputting the audio data through packets of a predetermined format according to a control area network (CAN) protocol by the slave device; receiving the audio data by a master device, wherein the master device integrates information including the received audio data to determine an event occurring to the healthcare receiver; transmitting a request message through at least one packet of the predetermined format to the slave device by the master device, wherein the predetermined format for a packet is defined according to the CAN protocol, the header of the packet of the predetermined format has a message identification field for recording one of an emergency identification, a master device request identification, a slave device response identification, and an audio data identification; wherein the at least one packet of the request message has the message identification field recording the master device request identification and has a slave device mapping code and a service identification, the slave device mapping code is for determining at least one of a plurality of slave devices corresponding to the request message, and the service identification is for determining a corresponding action.