Kona LoRa IoT Home Sensor TRM
T0005370_TRM
Version 1.2
TEKTELIC Communications Inc.
Confidential
Page 29 of 35
3.4.7.1
Grace Period
The Grace Period determines how long the Home Sensor waits before the previously reported
PIR motion event is considered clear. For example, a Grace Period of 5 (five) minutes results in
the sensor transmitting “Motion Detected” when someone enters the room, and “Motion Not
Detected” 5 (five) minutes after the room is empty.
Values less than 15 seconds are clipped to
15.
3.4.7.2
Threshold
The PIR transducer generates an event each time it detects motion in its field of view.
Depending on customer use case it may be desirable to increase the Threshold to reduce
sensitivity. This feature was designed to allow customers to filter out short motion events (such
as a person quickly entering a room to pick-up a notebook), while still allowing longer motion
events (a team meeting) to be reported. A value of 0 (zero) for the Threshold is clipped to 1.
3.4.7.3
Threshold Period
The Threshold Period is the amount of time that motion events will be accumulated for
Threshold detection. For example, a Threshold Period of 10 (ten) seconds accumulates motion
detection events over a 10 (ten)-second period from the time of first detection. If the Threshold
is exceeded before the time expires, the sensor reports “Motion Detected”, otherwise it does
not report. Values less than 5 for the Threshold Period are clipped to 5.
3.4.7.4
Mode
The Mode register allows the customer to disable/enable the motion transducer, as well as
change the type of data that is transmitted by the Home Sensor. When the PIR transducer is
disabled, no events from the PIR are monitored. When enabled, the motion transducer always
reports values in an event-driven method. The
“
Event Count
”
and
“
State
”
determine what
values are transmitted when periodic reporting is enabled.
3.4.7.5
Default Configuration
Table 3-19 shows the default values for the motion transducer configuration registers.
Table 3-19: Default Values of Motion Transducer Configuration Registers
Grace Period
300 seconds (5 minutes)
Threshold
1
Threshold Period
15 seconds
Mode
0x81 (State Enabled, Event Count Disabled, Motion Enabled)
