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3. Function
Adopting fixed 30S cyclically reporting mechanism, the product, transmits human condition information(no
human-existing/human-existing:big motion mode, minor motion mode, breathing mode) and illumination data
through RS485 communication protocol.
Big motion actives
Big Motion Mode:
Minor Motion Mode: Detecting the signals of only human slightly acting in detecting area within 30S, such as:
leaning forward, leaning back, body swing, shaking head, typing, using cellphone and other slighting acting.
Breathing Mode: only human breathing signal is detected(the expansion of abdomen and chest without
big motion and minor motion within 30S in detecting area ).
Ambient Light Level Report: Reporting light level when the change value of ambient light is more than
preset difference value.
4. Communication Parameters and Protocol（Standard Protocol）
Serial Port Communication Baud Rat
Data Bits
Stop Bits
DATA0
DATA1
DATA2
DATA3-DATA6
END DATA
Communication Data Type
Communication Requirement
LIFEBEING SENSOR
Detecting the signals of human greatly moving (walking) in detecting area within 30S.
e
Minor motion& Breathing signal maintains
9600
8
1
ID high
ID low
DATA length
Command function
Accumulating&Verifying data (DATA0+...+DATA6)
Transmitting&Receiving in HEX format
The interval between each command needs to be
greater than 200ms, and monitor the returned data
whether is the same as sent, if not received, it should
be resent by no more than 3 times;
page 3 of 12
MSA043D 485
Version: A0
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