24G multi-target state detection radar module

Main Product Parameters:

Operating Frequency: 24.0~24.25GHz
Maximum Sweep Bandwidth: 0.25GHz
Maximum Equivalent Isotropic Radiated Power: 13dBm
Operating Voltage (VCC): 5.0Vdc
Operating Current (ICC): ~260mA
Operating Temperature (TOP): -40℃~+85℃
Stationary Target Sensing Distance: 5m
Sitting Micro-motion Sensing Distance: 6m
Moving Target Sensing Distance: 8m
Supported Track Count: 5pp
Distance Measurement Accuracy: 0.1m
Distance Measurement Resolution: 0.75m
Angle Measurement Accuracy: 2°
Angle Measurement Resolution: 15°
Horizontal Field of View: ±45°
Elevation Field of View: ±25°

Product Description

The 24G multi-target status detection radar module consists of two 1-transmit 2-receive millimeter-wave radar chips, a high-performance microstrip antenna, a high-performance MCU, and peripheral auxiliary circuits. It operates in the frequency range of 24.00GHz to 24.25GHz, within the ISM band, with a working bandwidth of 250MHz. This product can be used in various settings such as homes, offices, and hotels, enabling precise detection of multiple moving, micro-moving, or stationary human bodies.

Main Functions and Performance of the Radar Module

This radar module’s primary functions include:
A. Motion Detection
a) Motion sensing distance: ≤8 meters (normal motion amplitude);
b) Motion trigger time: ≤0.5s;
c) Accuracy: ≥99%;
B. Human Presence Detection (Respiration Detection)
a) Stationary human sensing distance: ≤6 meters (seated human);
b) No-presence detection duration: 15s;
c) Accuracy: ≥95%;
C. People Counting:
a) Detection distance: ≤6 meters;
b) Number of people detected: ≤5 people;
c) Accuracy: ≥90% (3 people), ≥80% (5 people);
D. Direction Detection:
a) Recognizes human entry, exit, left, right, front, and back directions;
b) Detection distance: ≤6 meters;
c) Accuracy: ≥95%;
E. Trajectory Detection:
a) Identifies human movement paths within the detection area, facilitating the judgment of human movement positions and directions;
b) Supports multiple trajectories, maintaining trajectories for up to 5 people;
c) Detection distance: ≤6 meters;
d) Accuracy: ≥90%.

Application Scenarios:

Smart Home Appliance Applications

The radar is installed within home appliances to monitor the presence of individuals in real-time within its detection range. Based on radar detection results (presence/absence of people), the device adjusts its operating mode (active, low power, standby, shutdown, etc.) in real-time or near real-time, achieving smart home automation. Typical home appliances include:

Smart TVs
Smart speakers
Smart air conditioners
Smart toilets
Smart door locks
Other smart home appliances

Residential and Commercial Applications

For residential, hotel, office, and restroom settings, this product detects the presence of moving targets, direction of movement (approaching or distancing), and presence of individuals in real-time. This enables functions such as security, appliance control, and personnel monitoring. The solution is highly sensitive and effectively avoids privacy issues. Using IoT transmission methods and platforms, it ensures effective application in relevant settings. Typical application scenarios include:

Home security
Hotel management and monitoring
Community elderly care monitoring
Office monitoring

Energy-saving Control Applications

Based on motion detection and biometric detection functions, this product can be applied to energy-saving controls. Main application scenarios include:

Home appliance energy-saving
Office appliance energy-saving control
Street light energy-saving control

Precautions:

1. Start-up time
When this module is initially powered up, the internal registers need to be initialized and the ambient noise needs to be fully evaluated. Therefore the module power-on stabilization time is about 1s.

2.Effective Detection Distance
The detection distance of the radar module is related to the target size and movement mode, the use of the environment and other factors, so the actual detection distance fluctuates within a certain range is a normal phenomenon.

3. Radar biological detection performance
Due to the human respiratory heartbeat and other ultra-low-frequency signals, and the human body compared to furniture and home appliances on the radar signal reflection is weaker, radar occasional detection failure is a normal phenomenon.

4. Power radar module on the power quality requirements, higher than conventional low-frequency circuit. When supplying power to the module, the power supply is required to have no obvious burr or ripple phenomenon. In order to ensure the normal operation of the VCO circuit inside the module, the power supply input voltage range is 4.2V~5.4V, the power supply ripple should be no obvious spectral peak within 100kHz, and the peak current can support 180mA.