1. Муқаддима
The HLK-LD8001 is a 79G millimeter wave radar sensing module designed for non-contact, high-precision liquid level and material level measurement. Developed based on the ADT3102 chip, it integrates a 76-81GHz RF transceiver system, a 1T1R PCB high-gain antenna, 1MB flash memory, a radar signal processing unit, and an ARM® Cortex®-M3 core. Utilizing FMCW signal processing mechanisms combined with advanced radar signal processing algorithms, the module delivers highly accurate ranging capabilities.
2. Хусусиятҳои маҳсулот
- Radar Detection Based on FMCW FM Continuous Wave Signal
- Measuring distance up to 15m
- Highly accurate continuous measurement with an error of +/-5mm
- Antenna -3dB Beam Angle: 100° Horizontal, 80° Tilt
- Supports SPI, UART, I2C standard communication interfaces
- Compact size: R=19.5mm, with pin header connection
- Flexibility to add lenses to change the antenna angle
- Unaffected by temperature, humidity, noise, airflow, dust, light, and other environmental influences
3. Сенарияҳои татбиқ
The HLK-LD8001 module is suitable for a wide range of applications requiring precise liquid or material level detection:
- Industrial level measurement
- Sewer level detection
- Non-contact measurement of medical acidic and alkaline liquids
- Fuel tanks, IBC tonne drums, and viscous liquid measurement
- Пойгоҳҳои пуркунандаи барқ
- Industrial control systems
- Solar energy systems
- IoT applications (smart home, smart hotel)
- Transportation (intelligent parking)
- Medical devices (oxygen generators, thermostats)
4. Мушаххасоти
4.1 Хусусиятҳои функсионалӣ
| Parameter Content | Мин. | Навъи. | Макс. | Воҳиди. |
|---|---|---|---|---|
| Максимум диапазон | 15 | m | ||
| Measurement blindness | 14 | |||
| Дурустии андозагирӣ | +/-5 | mm | ||
| Вақти ҷавоб | 200 | ms |
4.2 Хусусиятҳои электрикӣ
| Параметрҳои амалиётӣ | Мин. | Навъи. | Макс. | Воҳиди. |
|---|---|---|---|---|
| Ҷилди корӣtagд (VCC) | 3.5 | 3.3 | 3.5 | V |
| Work current (ICC) | 135 | 600 | mA | |
| Work temperature (TOP) | -20 | 85 | °C | |
| Ҳарорати нигоҳдорӣ (TST) | -40 | 85 | °C |
4.3 Тавсифи RF
| Параметрҳои амалиётӣ | Мин. | Навъи. | Макс. | Воҳиди. |
|---|---|---|---|---|
| Басомади интиқол | 79 | 81 | ГГц | |
| Модуляция | FMCW | |||
| Firing power (Pout) | дБм | |||
| Гирифтани антенна | 10 | дБи | ||
| Нури уфуқӣ (-3дБ) | -50 | 50 | ° | |
| Нури амудӣ (-3дБ) | -40 | 40 | ° |
4.4 Other Properties
- Рақами модел: HLK-LD8001
- пайдоиш: Қитъаи Чин
- Флеш: 1M
- андоза: R=19.5mm (Diameter 39mm)
- Вазн: 4g
5. Таърифи пин
The HLK-LD8001 module provides several pin headers (J1-J5) for power, debugging, and communication. Refer to the table below for detailed pin definitions:
| Пинҳо | Не. | Номи PIN | Тавсифи | Шарҳ |
|---|---|---|---|---|
| J1 | 1 | SCL1 | IOPAD_P17/IIC1_SCL | |
| 2 | SDA1 | IOPAD_P18/IIC1_SDA | ||
| 3 | P19 | BOOT1 | Internal pull-up | |
| 4 | GND | GND | ||
| 5 | P12 | BOOT0 | Internal pull-up | |
| J2 | 1 | 3V3 | Вуруди қувваи барқ 3.3V | Интерфейси ислоҳи хатогиҳо |
| 2 | DI0 | Сигнали ислоҳи SWD | ||
| 3 | SWCLK | Соати Debug SWD | ||
| 4 | GND | GND | ||
| 5 | AI01 | Вурудоти аналогӣ | The analog IO voltage should not exceed 1.35V. 0.5-0.8V is a non-linear region and is not recommended. | |
| J3 | 1 | 3V3 | Вуруди қувваи барқ 3.3V | Communication interface with host computer |
| 2 | GND | GND | ||
| 3 | TX2 | IOPAD_P20/UART2_TX | ||
| 4 | TX0 | TTL serial port 0 's TX | ||
| 5 | RX0 | TTL serial port 0 's RX | ||
| J4 | 1 | CS | EFLASH_CSN | |
| 2 | CLK | EFLASH_SCLK | ||
| 3 | МОСКВА | EFLASH_MOSI | ||
| 4 | TX1 | IOPAD_P10/UART1_TX | ||
| 5 | RX1 | IOPAD_P11/UART1_RX | ||
| J5 | 1 | CS1 | IOPAD_P14/SPII_CSN | |
| 2 | SCLK1 | IOPAD_P13/SPII_SCLK | ||
| 3 | MOSI1 | IOPAD_P16/SPII_MOSI | ||
| 4 | MISO1 | IOPAD_P15/SPII_MISO | ||
| 5 | P28 | IOPAD_P28/VGA1_IOUTN |
6. Module Peripheral Reference Design
For integrating the HLK-LD8001 module into your system, refer to the peripheral reference design below. This diagram illustrates typical connections for power and communication with a host MCU.
7. Андозаи модул
The HLK-LD8001 module has a compact circular design with a diameter of 19.5mm (R=19.5mm). Detailed dimensions are provided in the diagram below for integration planning.
8. Танзимот
Follow these steps to set up your HLK-LD8001 radar module:
- Пайвасти барқ: Connect the 3.3V power input to the appropriate pin (e.g., J2-1 or J3-1) and ensure all GND pins are properly connected to your system's ground.
- Интерфейси коммуникатсионӣ: Choose your preferred communication interface (SPI, UART, or I2C) and connect the corresponding pins (e.g., J3 for UART, J1 for I2C, J4/J5 for SPI) to your host microcontroller (MCU). Refer to the 'Pin Definition' section for specific pin assignments.
- Ҷойгиркунии ҷисмонӣ: Ensure there is no metal or other material blocking the electromagnetic wave transmission directly in front of the antenna.
- Housing Integration: If using a protective housing, it is generally recommended that the module be placed 5-6mm away from the inner surface of the housing. Plastic is the recommended material for the housing to minimize signal attenuation.
- Мулоҳизаҳои экологӣ: Avoid installing the module near air conditioning outlets, fans, or other sources of strong airflow or vibration, as these can interfere with detection.
- Multiple Modules: If using multiple HLK-LD8001 modules simultaneously, maintain a spacing greater than 0.5 meters between modules, and ensure their antennas are not directly facing each other to prevent interference.
9. Дастурҳои истифодабарӣ
Once the module is correctly set up and powered, it will begin detecting liquid levels. Data can be accessed via the configured communication interface (SPI, UART, or I2C). The module operates based on FMCW signal processing to provide high-precision ranging data.
- Гирифтани маълумот: Implement appropriate software on your host MCU to read data from the module's communication pins.
- Тафсири маълумот: The raw data received from the module will need to be processed and interpreted by your software to convert it into meaningful liquid level readings.
- Танзими ҳассосият: The module's sensitivity can be adjusted to suit specific application requirements. For detailed instructions on sensitivity adjustment, please contact technical support.
10. Нигоҳдорӣ
To ensure optimal performance and longevity of your HLK-LD8001 module, observe the following maintenance guidelines:
- Тозакунӣ: Regularly check that the area in front of the radar antenna is free from any obstructions, especially metallic objects, that could block electromagnetic wave transmission.
- Housing Integrity: If using a housing, ensure it remains intact and that the module maintains its recommended distance (5-6mm) from the inner surface.
- Устувории экологӣ: Keep the module away from sources of strong air currents (e.g., air conditioning vents, fans) and excessive vibration.
- тозагӣ: While the module is largely unaffected by dust, ensure the antenna surface remains clean for best performance.
11. Баррасии мушкилот
If you encounter issues with the HLK-LD8001 module, consider the following:
- Unexpected Performance: If the module's performance is not as expected, especially after integrating it into a custom housing, the shell structure may need fine-tuning. It is recommended to send the shell structure to the factory for testing and adjustment of reference settings.
- дахолат: Ensure proper spacing (>0.5 meters) and orientation (antennas not facing each other) if multiple modules are used to avoid mutual interference.
- Тафсири маълумот: If you are receiving raw data but cannot convert it into meaningful readings, verify your software's data interpretation logic. Specific software or firmware may be required to convert HEX data into actual water level readings.
- Ҳаҷми вуруди аналогӣtage: For analog inputs (AI01 on J2), ensure the voltage does not exceed 1.35V. The range of 0.5-0.8V is a non-linear region and should be avoided for accurate measurements.
12. Маслиҳатҳои корбар
- Software for Data Interpretation: Users may need specific software or firmware to convert raw HEX data from the sensor into actual water level readings. Consult the manufacturer's resources or technical support for recommended tools or libraries.
- Санҷиши ибтидоӣ: Always test the module with default settings first. If results are unsatisfactory, then proceed with fine-tuning or seeking technical assistance.
13. Кафолат ва дастгирӣ
For any technical assistance, inquiries about product functionality, or support regarding the HLK-LD8001 module, please contact Hi-Link technical support. You can reach out via email at Bonnie@hlktech.com.
Hi-Link has over 14 years of IoT module experience, serving more than 100,000 customers in 80 countries, and complies with CE/FCC/ROSH Certification Standards.
