1. Overview of NJRC Microwave Modules
NJRC has established itself as a leader in developing high‑performance microwave modules that are designed for precision sensing and measurement. The product lineup includes:
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K‑Band Sensor Modules:
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Distance Measurement Sensor Module (NJR4234BW Series):
This module operates in the 24 GHz band (24.05–24.25 GHz) and is engineered for accurate distance measurement up to 20 meters. Its compact, low-profile design (38 × 38 × 4.2 mm) integrates the antenna, microwave circuit, and signal processing circuitry, making it ideal for applications where space is at a premium. -
Doppler Sensor Modules (NJR4262 and NJR4267 Series):
These modules utilize the Doppler effect to detect motion with high accuracy. Designed for 24 GHz operation, they offer exceptional sensitivity for both moving and stationary objects, providing reliable performance in applications such as traffic monitoring and industrial automation.
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60GHz Smart Sensor Micro Modules (NJR4652JS1/JS2 Series):
These ultra‑compact modules, measuring just 10 × 13.4 × 1.2 mm, integrate a 60 GHz radar sensor IC and an MCU to deliver turnkey solutions for presence detection and smart entrance counting. With low power consumption and versatile interface options (UART, USB, GPIO), these modules are perfect for embedding into smart devices and IoT applications.
2. Key Technical Features
K‑Band Modules:
- High Integration: Both the distance measurement and Doppler modules incorporate antennas, RF circuits, and signal processing units within a low‑profile package.
- Advanced Signal Processing: Innovative algorithms provide automatic calibration, gain control, and radio interference prevention, ensuring accurate detection even in complex environments.
- Versatile Frequency Configuration: Different frequency line-ups (for example, tailored for Japan, EU, and US markets) allow precise targeting of specific applications.
60GHz Smart Sensor Modules:
- Ultra‑Compact Design: With dimensions comparable to an IC package, these modules enable high‑density integration on PCB layouts.
- Turnkey Functionality: They come with pre‑loaded application software that simplifies deployment, whether for presence detection or smart entrance counting.
- Low Power Consumption: Designed for intermittent operation, these modules typically consume as low as 30–40 mA at 3.6V, making them suitable for battery‑powered and energy‑constrained environments.
- Multi-Interface Support: With UART, USB, and GPIO options, these sensors provide flexible connectivity and easy integration into existing systems.
3. Usage Scenarios and Customer Stories
Usage Scenarios:
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Security & Surveillance:
In modern security systems, accurate presence detection is crucial. NJRC’s 60GHz smart sensor modules can be seamlessly integrated into surveillance cameras, smart locks, and access control systems to monitor occupancy and detect unauthorized entry. -
Industrial Automation & Robotics:
K‑Band Doppler sensor modules are ideal for monitoring machine movements or detecting obstacles in automated production lines. They are also used in robotic systems to navigate dynamic environments safely. -
Traffic Management:
Deploying K‑Band sensor modules in traffic control systems enables real‑time monitoring of vehicle speed and flow, improving traffic signal timing and congestion management. -
Smart Building Solutions:
The 60GHz presence detection modules are used in smart building applications to count occupants, manage lighting, and optimize HVAC systems for energy efficiency.
Customer Story – Smart Entrance Counter:
One of our clients, a leading facility management company, integrated the NJRC 60GHz Smart Sensor Micro Module into their new smart building project. Facing challenges in accurately counting people entering and exiting across multiple doors, the client adopted the smart entrance counter solution based on NJRC’s modules. The solution, with its ultra‑compact design and turnkey software, significantly reduced installation complexity and achieved real‑time, accurate occupant counts. This not only improved security but also enabled efficient resource management within the building.
Customer Story – Industrial Automation:
In another case, a manufacturing plant implemented NJRC’s K‑Band Doppler Sensor Modules on their production line. These sensors were used to detect the movement of robotic arms and parts on conveyor belts. With the high sensitivity and robust signal processing capabilities of the modules, the system achieved a remarkable reduction in production downtime and improved overall process reliability.
Usage Tips:
- Proper Integration: Always ensure proper impedance matching and use high‑quality RF cables to maintain signal integrity.
- Remote Calibration: Leverage remote interface options (such as UART) for periodic calibration and monitoring of sensor performance.
- Environmental Protection: Even though the modules are IP67 rated, ensure adequate ventilation and protection from extreme conditions to prolong device life.
- Software Integration: Utilize the turnkey application software provided with 60GHz modules to shorten development time and streamline system integration.
4. Conclusion
NJRC’s microwave module solutions represent a fusion of advanced RF engineering and practical design tailored for demanding satellite and industrial applications. Whether it’s the robust K‑Band modules for distance and Doppler sensing or the ultra‑compact 60GHz smart sensor modules for presence detection and smart entrance counting, NJRC products deliver exceptional performance, stability, and flexibility. By integrating these modules into your systems, you can achieve superior accuracy, efficient operation, and enhanced overall system reliability.