Hi-Link HLK-LD2450 User Manual

Instruction manual
HLK-LD2450
Shenzhen Hi-Link Electronic Co.,Ltd
12
6 Communication protocols
The LD2450 module communicates with the outside world through a serial port
with a default baud rate of 256000, 1 stop bit, and no parity bits.
The radar outputs information about the detected target, including x-coordinates
in the area, y-coordinates, and the velocity value of the target. The data format
reported by the radar is shown in the table below and is reported at 10 frames per
second.
Frame header
Intra-frame data
End of frame
AA FF 03 00
Goal 1 information
Goal 2 information
Goal 3 information
55 CC
Table 2 Format of reported data frames
The specific information contained in the individual targets is shown in the table
below:
Target X
coordinate
Target y
coordinate
Target speed
Distance
Resolution
signed int16 type,
highest bit 1
corresponds to positive
coordinates, 0
corresponds to negative
coordinates, unit is mm
signed int16 type,
the highest bit 1
corresponds to
positive coordinates,
0 corresponds to
negative
coordinates, the unit
is mm
signed int16 type, the
highest bit 1 corresponds
to the positive speed, 0
corresponds to the
negative speed, and the
other 15 bits correspond
to the speed, the unit is
cm/s
uint16 type, the
size of a single
distance gate, the
unit is mm
Table 3 Format of data within the frame
Example data:
AA FF 03 00 0E 03 B1 86 10 00 40 01 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 55 CC
This set of data indicates that the radar is currently tracking a target i.e. target 1
(blue field in the example), target 2 and target 3 (corresponding to the red and black
fields in the example, respectively) do not exist, so their corresponding data fields are

Hi-Link HLK-LD2450 Specifications

General

Brand	Hi-Link
Model	HLK-LD2450
Category	Security Sensors
Language	English