Product Description

The Hi-Link HLK-LD2450 24GHz Trajectory Detection Radar Sensor is an intelligent millimeter-wave radar module designed for real-time detection, positioning, and tracking of moving targets. It uses a 24GHz radar sensing system combined with intelligent algorithm firmware to detect the movement and location of people within its sensing area.

The HLK-LD2450 integrates an AIoT millimeter-wave radar chip, high-performance transmitter and receiver microstrip antennas, MCU, and supporting peripheral circuits into a compact sensing solution. It uses FMCW (Frequency-Modulated Continuous Wave) technology and advanced radar signal-processing algorithms to determine the position and movement of detected targets.

The module supports serial-port output of detection data, making it convenient to connect with microcontrollers, embedded systems, smart home controllers, and other intelligent devices. With a maximum detection distance of up to 6 meters, it is suitable for indoor applications such as homes, offices, hotels, and other smart environments where motion tracking and presence detection are required.

Features

• 24GHz millimeter-wave radar sensing technology
• Integrates intelligent radar chip and algorithm firmware
• Supports moving target detection and tracking
• Provides target positioning and trajectory detection
• Uses FMCW waveform technology
• Advanced radar signal processing
• Maximum detection distance of up to 6 meters
• High-performance transmitter and receiver microstrip antenna
• Integrated low-cost MCU and peripheral circuits
• Supports serial-port output of detection data
• Plug-and-play design
• Suitable for indoor intelligent applications
• Compact solution for embedded and IoT projects

Specifications

Working Principle

The HLK-LD2450 uses 24GHz FMCW radar technology to detect moving targets in its sensing area.

The radar transmitter sends high-frequency electromagnetic waves toward the surrounding area. When these waves encounter a moving object, part of the signal is reflected back toward the receiver.

The radar system analyzes the transmitted and received signals using its intelligent signal-processing algorithms. This allows it to determine information related to the location and movement of the target.

The processed detection information can then be transmitted through the module’s serial interface, allowing an external microcontroller or host system to use the radar data for tracking, automation, presence detection, or other intelligent functions.

Radar Detection and Tracking

Unlike basic motion sensors that simply provide a motion/no-motion indication, the HLK-LD2450 is designed for moving target localization and tracking.

It can be used to monitor the movement of targets within its detection area and provide detection information through the serial interface. This makes it suitable for applications requiring more detailed motion information.

The maximum specified detection distance is up to 6 meters, depending on the installation environment and target conditions.

Communication Interface

The HLK-LD2450 supports serial-port data output, allowing detection information to be transferred to an external controller.

It can be integrated with:

• Microcontrollers
• Embedded systems
• IoT controllers
• Smart home systems
• Computer-based systems
• Custom automation controllers

The serial output makes the module convenient for projects where radar detection information needs to be processed by another device.

Design and Construction

The HLK-LD2450 combines several key components into a single radar sensing module:

• 24GHz millimeter-wave radar chip
• High-performance transmitter antenna
• High-performance receiver antenna
• Microstrip antenna structure
• MCU
• Peripheral supporting circuits
• Intelligent radar algorithm firmware

This integrated design provides a compact solution for incorporating trajectory and motion detection into intelligent products.

Applications

The Hi-Link HLK-LD2450 can be used for:

• Smart home systems
• Human movement detection
• Indoor target tracking
• Smart lighting systems
• Presence and motion detection
• Office automation
• Hotel automation
• Intelligent security systems
• IoT devices
• Robotics
• Smart appliances
• Human tracking projects
• Embedded radar applications
• Intelligent automation systems
• Indoor monitoring systems

Advantages of Millimeter-Wave Radar

Millimeter-wave radar provides a different sensing approach from conventional infrared motion sensors. Instead of relying on visible light or infrared radiation from the target, radar detects objects through reflected electromagnetic waves.

The HLK-LD2450 combines radar hardware with intelligent processing to provide moving-target positioning and tracking, making it suitable for applications that require more information than simple motion detection.

Package Includes

• 1 × Hi-Link HLK-LD2450 24GHz Trajectory Detection Radar Sensor

Product Disclaimer

• The specified 6m maximum detection distance is a product specification and actual performance may vary depending on installation, target size, movement, environment, and other conditions.
• The module is primarily intended for indoor applications as described by the product information.
• Radar detection performance can be affected by the surrounding environment and installation position.
• The product is a radar sensing module and may require an external controller or host system to process its serial output data.
• Product appearance and minor component details may vary slightly between production batches.
• The package includes only the HLK-LD2450 radar sensor unless otherwise specified.