Use And Configuration; Typical Application Circuit; The Role Of Configuration Parameters; Description Of Visual Configuration Tool - Hi-Link HLK-LD2410C Manual

5 Use and configuration

5.1 Typical Application Circuit

The LD2410C module directly outputs the detected target state through an IO pin (high level for someone, low level for no one), and can also output the detection result data
through the serial port according to the specified protocol. The serial port output data includes Target status and distance auxiliary information, etc., users can flexibly use according to
specific application scenarios.
The power supply voltage of the module is 5V, and the power supply capacity of the input power supply is required to be greater than 200mA.
The module IO output level is 3.3V. The default serial port baud rate is 256000, 1 stop bit, no parity bit.

5.2 The role of configuration parameters

The user can modify the configuration parameters of the module through the serial port of LD2410C to meet different application requirements, and the configuration content will not be lost when the power is
turned off. The configurable parameters include the following:
The furthest detection distance
Set the farthest detectable distance, only the human targets appearing within this farthest distance will be detected and the result will
be output. Set it in units of distance gates, each distance gate is 0.75m.
Including the longest distance door for motion detection and the longest distance door for static detection, the range can be set from 1 to 8. For example, if the longest distance door is set to
2, only when there is a human body within 1.5m can it be effectively detected and the result output.
sensitivity
Only when the detected target energy value (range 0-100) is greater than the sensitivity value will it be determined that the target exists, otherwise it will be ignored.
The sensitivity value can be set from 0 to 100. Sensitivity can be set independently for each range gate, which can precisely adjust the detection in different distance
ranges, local accurate detection or filter interference sources in specific areas.
In addition, if the sensitivity of a range gate is set to 100, the effect of not recognizing the target under this range gate can be achieved. For example, if the
sensitivities of range gate 3 and range gate 4 are set to 20, and the sensitivities of other range gates are set to 100, then only the human body within the range
of 2.25-3.75m from the module can be detected.
Duration of no one
When the radar outputs the results from someone to no one, it will report people for a period of time. If there is no one in the radar test range during this time period, the
radar will report no one; if the radar detects people during this time period, it will be refreshed. This time, in seconds. It is equivalent to the unoccupied delay time. After the
person leaves, the output state will be unoccupied only after keeping no one for more than this duration.

5.3 Description of Visual Configuration Tool

In order to facilitate users to quickly and efficiently test and configure the module, a PC-side PC configuration tool is provided. Users can use this tool software to connect to the
serial port of the module, read and configure the parameters of the module, and also receive the detection results reported by the module. data, and real-time
LK-LD2410C
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