Ai-Thinker RD-03 Human Presence Sensor Radar User Manual

Ai-Thinker RD-03 Human Presence Sensor Radar

Product Information

Specifications

• Model: Rd-03
• Package: DIP package, standard 2.54mm pin
• Antenna: Radar support 24 GHZ ISM frequency band
• Size: Ultra-small size 20*20mm
• Main Features:
  • Real-time detection of moving or micro-moving human bodies
  • Visual configuration tool for easy setup
  • Support for various installation methods such as ceiling and wall
  • Supports UART interface
  • Applications include human sensor light control, smart appliances, security, lighting, etc.

Product Usage Instructions

Setup and Configuration
To set up the Rd-03 module, follow these steps:

1. Connect the module to the power supply within the specified voltage range (3.0V to 3.6V).
2. Use the visual configuration tool to set the sensing distance range, sensitivity, and delay time as needed.
3. Ensure proper installation based on the desired application scenario (ceiling or wall mounting).

Maintenance and Care
Regularly check the module for any physical damage or loose connections. Keep the module clean and free from dust or debris that may obstruct the radar sensing capabilities.

Troubleshooting
If you encounter issues with the module’s performance, refer to the user manual for troubleshooting tips. Contact customer support if problems persist.

Frequently Asked Questions (FAQ)

1. Q: What is the operating temperature range of the Rd-03 module?
   A: The module can operate within a temperature range of -40°C to 125°C.

2. Q: How can I adjust the radar parameters of the Rd-03 module?
   A: You can adjust radar parameters through the serial port using the provided visual configuration tool for convenient and fast customization.

3. Q: What are some typical applications of the Rd-03 module?
   A: The module can be used for human sensor light control, wake-up systems for advertising screens, life safety protection, smart appliances, security systems, lighting control, and monitoring facilities for new energy charging/parking.

Document resume

Version| Date| Develop/revise content| Edition| Approve
---|---|---|---|---
V1.1.0| 2023.05.11| First Edition| Jiye Yang| Ning Guan
V1.1.1| 2023.05.31| Change the packaging| Jiye Yang| Ning Guan
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |

Product Overview

Rd-03 is a radar module developed by Shenzhen Ai-Thinker Technology Co., LTD. It equipped with silicon micro-S3KM1110 chips. S3KM1110 is an integrated single-chip millimeter-wave sensor SoC based on FMCW radar transceiver technology.Operates in 24 GHz K-band with up to 1 GHz modulation bandwidth per frequency. FMCW continuous wave is used to detect the target in the set space. Combined with radar signal processing and accurate human body sensing algorithm, high sensitivity human presence state sensing can be realized to recognize human body in motion and static state. The Rd-03 module can sense whether there is a moving or micro-moving human body in the area, and realize real-time detection results. A visual configuration tool is provided to easily configure the sensing distance range, sensing sensitivity in different intervals and unmanned delay time, etc.

Figure 1 S3KM1110 architecture diagram

Characteristic

• DIP package, standard 2.54mm pin
• Radar support 24 GHZ ISM frequency band
• The radar antenna supports 1 receive and 1 transmit, antenna beam narrow, high resolution, frequency bandwidth, strong anti-interference
• The radar’s max sensing range is up to 5 meters
• Radar angle is big, range of ±60 degrees
• Radar range and accurate recognition, support induction range, shielding range outside interference
• Ultra-small size：20*20mm, Plug and play, real-time reporting of detection results
• The intelligent adjustment of radar parameters can be realized through the serial port, which is convenient and fast
• Support various installation methods such as ceiling and wall
• Support UART
• Typical application scenarios
• Human sensor light control
• Human body induction wake-up of advertising screen and other equipment
• life safety protection
• Smart Appliances
• Smart Security
• smart lighting
• New energy charging/parking monitoring facilities

Main parameters

Table 1 main parameters

Operation

temperature

| -40℃ ~ 85℃
Storage environment| -40℃ ~ 125℃, < 90%RH
Power supply| Support voltage 3.0V ~ 3.6V, power supply current ≥200mA
Interfaces| UART
UART rate| Default 115200 bps

Static electricity requirements
Rd-03 is an electrostatic sensitive equipment, special precautions should be taken during handling.

Figure 2 ESD anti-static diagram

Electrical characteristics

Table 2 Electrical Characteristics Table

Parameter| Conditio| Min.| Typical value| Max.| Unit
---|---|---|---|---|---
Power supply| VDD| 3.0| 3.3| 3.6| V
**** I/O| VIL| –| 0| –| 0.8| V
VIH| –| 2.3| –| VDD| V
VOL| –| 0| –| 0.45| V
VOH| –| 2.45| –| VDD| V

Radar sensing range
Table 3 Radar induced range

Notice：

• The above sensing distance is measured based on the open space of Anxinke, for reference only.
• The radar sensing distance is greatly affected by surrounding walls, ceilings, large-sized objects, and installation methods. The actual measurement data of the installation environment shall prevail.

Power
The following power consumption data is based on a 3.3V power supply and an ambient temperature of 25°C

Table 4 Power Consumption Table

Appearance size

Figure 3 Appearance diagram (rendering diagram is for reference only, subject to the actual object）

Pin definition

Rd-03 connects to a total of 5 interfaces, for example, the pin diagram, the pin function definition table is the interface definition

Figure 5 Pin diagram
Table 5 Definition table of pin functions

level when not sensing

Schematic diagram

Design guidance

Application guide circuit

Recommended PCB package size

Note:：

• Rd-03 module adopts standard pin header interface with 5pin-2.54mm spacing

Precautions for radar installation
In motherboard installation position, it is recommended that the following several ways:

• As far as possible to ensure that the radar antenna is opposite to test area, and the antenna around open without sunscreen.
• ensure that the radar installation position is firm, stable, shaking will influence the effect of detection of radar itself.
• ensure that there won’t be on the back of radar object movement or vibration. Due to the penetrating nature of radar waves, the antenna signal back lobe may detect moving objects on the back of the radar. A metal shield or metal backplane can be used to shield the radar back flap to weaken the influence of objects on the back of the radar.
• The theoretical range accuracy of radar is obtained by special algorithm on the basis of the physical resolution of 0.75m. As target size, condition, different, such as RCS target distance accuracy will fluctuate; And the farthest distances fluctuate a little bit.

In order to meet the performance of on-board antenna, antenna surrounding prohibited, metal pieces, far away from the high frequency components.

Installation environment requirements
This product needs to be installed in a suitable environment.

If it is used in the following environments, the detection effect will be affected:

• Induction of continuous movement in the area of nonhuman objects, such as animals, sustained oscillation of the curtain, is the outlet of the large strain of green plant, etc.
• induction area exists the strong reflector of large area, strong reflector is of the radar antenna can cause interference.
• When mounting the wall, need to consider the top of the indoor air conditioning, electric fan etc. External interference factors.

Installation mode and induction range

Hanging roof installation

Wall mounting mode

Power Supply

• Recommended voltage is 3.3V and the peak current is above 200mA.
• Recommended to use LDO as power supply ; If using DC-DC, it is recommended to control ripple within 30mV.
• DC – DC power supply circuit suggested the reserved capacitance position, dynamic response can be large changes in load and optimize the output ripple.
• 3.3V power supply interface increases ESD device is recommended.

GPIO

• Some IO ports are drawn from the periphery of the module. If necessary, it is recommended to use 10-100 ohm resistors in series on the IO ports. It can suppress overshoot, so make level both sides more smoothly. It helps EMI and ESD.
• Special IO mouth pull up or down, need to refer to instructions on the use of the specification, here will affect the launch configuration module.
• Module IO port is 3.3 V if the master IO mouth level does not match with module, need to increase the level conversion circuit.
• If IO mouth directly connected to the peripheral interface, or terminal, such as row needles, and Suggestions on the IO mouth line near the terminal obligate ESD device.

Storage conditions
Products sealed in moisture-proof bags should be stored in a non-condensing atmosphere at <40℃/90%RH. The module’s moisture sensitivity level MSL is level 3.
After the vacuum bag is unwrapped, it must be used within 168 hours at 25±5℃/60%RH. Otherwise, it needs to be baked before it can be put on line again.

Reflow welding curve diagram

Product package information
The Rd-03 module is packaged in tape at 200 pcs /reel. As shown in the figure below:

Contact us

• Ai-Thinker official website
• Official Forum
• Develop DOCS
• Alibaba shop
• Tmall shop
• Taobao shop
• Technical support Email: support@aithinker.com
• Domestic business cooperation: sales@aithinker.com
• Overseas business cooperation：overseas@aithinker.com
• Company address: Room 403,408-410, Block C, Huafeng Smart Innovation Port, Gushu 2nd Road, Xixiang, Baoan District, Shenzhen.
• Tel: 0755-29162996

Disclaimer and copyright notice

The information in this article, including the URL address for reference, is subject to change without notice. The document is provided “as is” without any guarantee responsibility, including any guarantee for merchantability, suitability for a specific purpose, or non-infringement, and any guarantee mentioned elsewhere in any proposal, specification or sample. This document does not bear any responsibility, including the responsibility for infringement of any patent rights arising from the use of the information in this document. This document does not grant any license for the use of intellectual property rights in estoppel or other ways, whether express or implied. The test data obtained in the article are all obtained from Ai- Thinker’s laboratory tests, and the actual results may vary slightly. All brand names, trademarks and registered trademarks mentioned in this article are the property of their respective owners, and it is hereby declared. The final interpretation right belongs to Shenzhen Ai-Thinker Technology Co., Ltd.

Notice
Due to product version upgrades or other reasons, the contents of this manual may be changed.
Shenzhen Ai-Thinker Technology Co., Ltd. reserves the right to modify the contents of this manual without any notice or prompt. This manual is only used as a guide. Shenzhen Ai-Thinker Technology Co., Ltd. makes every effort to provide accurate information in this manual. However, Shenzhen Ai-Thinker Technology Co., Ltd. does not guarantee that the contents of the manual are completely free of errors. All statements and information in this manual. And the suggestion does not constitute any express or implied guarantee.

Statement

Ai-Thinker may provide technical and reliability data (including data sheets), design resources (including reference designs), application or other design recommendations, network tools, safety information and other resources (the “Resources”) “as is” without warranties of any kind, express or implied. Including, but not limited to, express or implied warranties of suitability, fitness for a particular use, or non-infringement of any third party’s intellectual property rights.And specifically declares that it is not liable for any necessary or incidental losses, including but not limited to, arising from the application or the use of any of our products and circuits.
Ai-Thinker reserves the right to release information in this document (including but not limited to metrics and product descriptions) and any changes to our products without prior notice. This document automatically supersedes and replaces all information provided in previous versions of the same document number file. These resources are available to skilled developers who design with Ai-Thinker products. You are solely responsible for: (1) Selecting the appropriate Ai-Thinker products for your application; (2) Design, validate, and run your application and product throughout its life cycle;(3) Ensure that your application meets all applicable standards, codes and laws, as well as any other functional security, information security, regulatory or other requirements. Ai-Thinker may authorize you to use these resources only for the development of applications of Essence Products described in this Resource. Without the permission of Ai-Thinker, any unit or individual shall not extract or copy part or all of these resources, and shall not be transmitted in any form. You are not entitled to use any other Ai- Thinker intellectual property rights or any third party intellectual property rights. You shall indemnify you in full for any claims, damages, costs, losses and liabilities arising against Ai-Thinkeror its representatives in connection with the use of these resources, for which Ai-Thinker is not liable. The products offered by Ai-Thinker are subject to the terms of sale of Ai-Thinker or other applicable terms attached to Essence’s products. Essence’s availability of these resources does not extend or otherwise change the warranties or warranties disclaimers applicable to product releases.
Copyright © 2023 Shenzhen Ai-Thinker Technology Co., Ltd All Rights Reserved

FCC WARNING

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. this device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause undesired operation.

Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

To maintain compliance with FCC’s RF Exposure guidelines, This equipment should be installed and operated with minimum 20cm distance between the radiator and your body: Use only the supplied antenna.

Read User Manual Online (PDF format)

Download This Manual (PDF format)

Download this manual  >>