1. Produit terminéview
The JMT HLK-LD2450 is a 24GHz radar module designed for real-time tracking of moving targets within a detection area. It provides distance, angle, and speed information of these targets via a serial port. This module is primarily intended for indoor applications such as smart homes, offices, and hotels, enabling precise positioning and tracking of people.
Figure 1 : Surview of the JMT HLK-LD2450 radar module, illustrating its compact design for human movement trajectory tracking.
2. Principales caractéristiques
- Suivi de trajectoire : Real-time tracking of moving targets, outputting distance, angle, and speed data.
- Application Scenes: Optimized for indoor environments including homes, offices, and hotels for human presence and movement detection.
- Angle de détection : Azimuth ± 60° / Tilt ± 35°.
- Précision de l'angle : 2° à 20°.
- Distance de détection : Maximum sensing distance of 8 meters.
- Précision de mesure de distance: 0.15 mètres.
- Sortie de données : Serial ASCII format.
- Mode de modulation : FMCW (Frequency Modulated Continuous Wave).
- Fréquence: 24G-24.25GHz (ISM band).
- Sweep Bandwidth: 250MHz (CE/FCC compliant).
- Débit en bauds du port série : 256000, with 1 stop bit and no parity bit.
- Emballer: Default 1.5mm x 4Pin Female connector.
3. Spécifications techniques
| Paramètre | Valeur |
|---|---|
| Fréquence | 24G-24.25GHz |
| Bande passante de balayage | 250MHz (CE/FCC compliant) |
| Mode de modulation | FMCC |
| Vol. d'alimentationtage | 5V (Typical) |
| Dimension externe | 15 mm x 40 mm |
| Angle de détection (azimut) | ± 60° |
| Detection Angle (Tilt) | ± 35° |
| Distance de détection maximale | 8m |
| Distance Defense Rate | 0.75 m |
| Précision de la mesure de distance | 0.15 m |
| Précision de l'angle | 2° ~ 20° |
| Taux de rafraîchissement des données | 10 Hz |
| Température ambiante | -40°C ~ +85°C |
| Format des données | Serial ASCII output |
| Débit en bauds du port série | 256000 |
| Configuration du port série | 1 stop bit, no parity bit |
| Type de connecteur | 1.5mm x 4Pin Female (Default) |
| Poids de l'article | 9.07 g (0.32 onces) |
4. Instructions de configuration
This section details the physical connection and initial configuration of the HLK-LD2450 module.
4.1.Interface des modules
The module features a 4-pin interface for power and serial communication. Refer to the diagram below for pin assignments.
Figure 2 : HLK-LD2450 module dimensions and interface pinout. The module measures 15mm x 40mm.
- 1: VCC - 5V Power Input
- 2 : Terre - Power Ground
- 3: TX - Serial Transmission (Output from module)
- 4 : réception - Serial Port Reception (Input to module)
Assurez-vous que la polarité et le volume sont corrects.tage when connecting the power supply. Incorrect connections may damage the module.
4.2. Installation physique
The module is suitable for wall-mounted installation in indoor environments. Consider the detection angle specifications (Azimuth ± 60° / Tilt ± 35°) to optimize coverage for the desired tracking area.
Figure 3 : The HLK-LD2450 module showing the pin headers for connection, designed for motion positioning and tracking.
5. Mode d'emploi
The HLK-LD2450 module communicates via a serial port, outputting target information in ASCII format.
5.1. Serial Communication Parameters
- Taux de bauds: 256000
- Bits d'arrêt: 1
- Bit de parité : Aucun
5.2. Using the Configuration Tool
To interact with the module and retrieve data, use the dedicated Configuration Tool (software provided separately by the manufacturer, if applicable). Follow these steps:
- Connect the HLK-LD2450 module to your computer via a serial interface (e.g., USB-to-serial converter).
- Open the Configuration Tool software.
- In the Configuration Tool, select the correct serial port number (COM port) corresponding to your connected module.
- Ensure the serial port information (baud rate, stop bits, parity) matches the module's specifications (256000, 1 stop bit, no parity).
- Click the "Detect Device" button within the Configuration Tool.
- Once the module is detected, click "Start" to begin receiving moving target information from the detection area.
Remarque importante : The serial port tool and the host tool cannot be used simultaneously. Ensure only one application is accessing the serial port at any given time.
6. Entretien
The JMT HLK-LD2450 module is designed for reliable operation with minimal maintenance. Adhere to the following guidelines:
- Conditions environnementales : Operate the module within the specified ambient temperature range of -40°C to +85°C. Avoid exposure to extreme humidity, dust, or corrosive environments.
- Nettoyage: If necessary, gently clean the module's surface with a soft, dry cloth. Do not use liquid cleaners or solvents.
- Manutention physique : Handle the module with care to prevent physical damage to the PCB or components. Avoid bending or applying excessive force.
- Alimentation: Ensure a stable 5V power supply is used. Fluctuations or incorrect voltagcela peut affecter les performances ou endommager le module.
7. Dépannage
This section provides solutions to common issues you might encounter with the HLK-LD2450 module.
7.1. No Data Output / Connection Issues
- Vérifiez l'alimentation : Verify that the module is receiving a stable 5V power supply and that the VCC and GND connections are correct.
- Sélection du port série : Ensure the correct COM port is selected in your Configuration Tool or serial terminal software.
- Serial Port Parameters: Confirm that the baud rate is set to 256000, with 1 stop bit and no parity bit.
- Connexions de câble : Inspect all serial communication cables for proper connection and integrity. Ensure TX and RX lines are correctly cross-connected if using a direct serial connection (TX of module to RX of host, RX of module to TX of host).
- Conflit logiciel : Remember that the serial port tool and the host tool cannot be used at the same time. Close any other applications that might be accessing the serial port.
- Problèmes de pilote : Ensure that the drivers for your USB-to-serial converter (if used) are correctly installed and up-to-date.
7.2. Inaccurate or Intermittent Tracking
- Obstructions: Ensure there are no significant physical obstructions (e.g., thick walls, large metal objects) between the module and the target area that could interfere with radar signals. While the module can detect through thin materials, dense objects will block signals.
- Position de montage : Adjust the module's mounting position and angle to ensure optimal coverage of the desired detection area, considering the specified Azimuth and Tilt angles.
- Interférence environnementale : While 24GHz is robust, strong electromagnetic interference in the immediate vicinity could potentially affect performance.
8. Informations sur la garantie
Specific warranty details for the JMT HLK-LD2450 module are not provided in the available product information. Please refer to the seller or manufacturer's official website pour les conditions générales de garantie.
9. Assistance clientèle
For technical assistance, further documentation, or inquiries regarding the JMT HLK-LD2450 module, please contact your point of purchase or visit the official JMT website. Support contact information is not available in the provided product data.
