SeeedStudio R24BBD1 User Manual
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SeeedStudio R24BBD1 User Manual

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Summary of Contents for SeeedStudio R24BBD1

  • Page 2: Table Of Contents

    Table of Contents Overview 1. Principle of operation 2. Hardware Design Considerations 2.1 The power supply can be designed with the following circuit in mind4 2.2 using the wiring diagram 3. Antenna and housing layout requirements 4. Static Protection 5. Functional disturbances 5.1 Unoccupied state, abnormal output occupied 5.2 Manned status, abnormal output unoccupied 6.

  • Page 3: Overview

    Overview This manual primarily describes the practical application of the radar system and the issues that should be addressed at each stage to minimize design costs, increase product stability, and improve project efficiency. This manual talks about the hardware circuit reference design, the radar antenna and shell layout requirements, and the use of a multifunctional standard UART protocol.

  • Page 4: Hardware Design Considerations

    2. Hardware Design Considerations The standard voltage power supply and input current of the radar under normal circumstances should be 4.9–6V and 200 mA, respectively. Power supply design, power ripple ≤ 100mV. 2.1 The power supply can be designed with the following circuit in mind Fig.

  • Page 5: Using The Wiring Diagram

    2.2 using the wiring diagram Fig. 3 Schematic diagram of the radar module and peripheral connections 3. Antenna and housing layout requirements PCBA: Mount the radar ≥1mm higher than the other devices. Case: Keep 2-5mm between the radar antenna and other shell surfaces. Case detection surface: To avoid coverage area performance, keep the non-metallic case flat and straight to avoid bending.

  • Page 6: Static Protection

    4. Electrostatic (ESD) protection Radar modules contain electrostatic-sensitive circuits, so they risk electrostatic shocks. Thus, it is essential to maintain proper electrostatic protection throughout the process of transportation, storage, work, and handling. Avoid touching the radar module's antenna surface and connector pins, but hold the corners. We recommend that you wear anti- static gloves during the operation of the radar sensor.

  • Page 7: Manned Status, Abnormal Output Unoccupied

    5.2 Occupied status, abnormal output unoccupied Radar can determine whether a human body exists by transmitting and receiving electromagnetic waves. The closer the body is to the radar, the higher the accuracy is. a. The human body is out of radar’s range. Adjust the installation angle to fit the range of the radar.
  • Page 8 Status change time/function Functions explanation parameter 0 - 100 Reference (description of output of body motion amplitude parameters) DP5: Sensitivity setting 1 - 10 Default scene mode, adapted to 10 steps positions of adjustment DP6: Scene modes (bed, Adapted to different scenarios bathroom, hotel, bedroom, office, according to the size of the area default mode)

  • Page 9: Description Of The Output Of The Body Motion Amplitude Parameter

    Status change time/function Functions explanation abnormal states of shortness of breath DP17: Sleep scoring (optional, users can rate according to their Combined day's sleep rating own way) 6.2 Description of the output of the body motion amplitude parameter Body movement amplitude parameters None Environmental unmanned...

  • Page 10: Communication Commands And Parameter Definitions

    Stop bits: 1 Data bits: 8 Parity: None 8. Communication commands and parameter definitions 8.1 Definition and description of the frame structure Frame structure definition Starting Function Address Address Length of data Data Check Code Code codes code 1 code 2 0X55 Lenth_L Lenth_H...

  • Page 11: Description Of Address Assignment And Data Information

    8.2 Description of address assignment and data information 24G Bio-aware radar interface content Address Function Code Address code 2 Data Notes code 1 Device ID 0X01 Marking Software version 0x02 search Hardware version 0x03 0x01 Protocol version 0x04 Radar Environmental status Information 0X05 Search...
  • Page 12 24G Bio-aware radar interface content Corresponding to1 2 3 4 5 6 7 8 9 10 gears Threshold Enumeration range1~10 (default 7) gear 0x0C The higher the gear, the more sensitive it is Default mode 0x00 Area detection (top loading) 0x01 Bathroom (top mounted) 0x02...
  • Page 13 24G Bio-aware radar interface content Other Reboot functions 0X04 0X05 Sleep Off 0x00 function On 0x01 switch 0x0D 4byte Integer data Start OTA (firmware package size)+ upgrade nbyte (software version 0X08 number) Upgrade Packet Offset (4byte) + package transfer Packet (1024byte) 0X09 End of upgrade...
  • Page 14 24G Bio-aware radar interface content Nobody 00 FF FF Environment status Static 01 00 FF Upload 0x05 Radar Info Movement 01 01 01 0x03 4 Byte Float data (see Signs parameters 0x06 Appendix 2) Current gear value Threshold gear 0X0C (0X01~0X0a) Default mode 0x00 Area detection (top loading)
  • Page 15 Off 0x00 Sleep function switch 0x0D On 0x01 Other Failed 0X00 functions Start OTA upgrade 0X08 Success 0X01 0X05 Upgrade package Fixed characters 0X0F transfer 0X09 24G Bio-aware radar interface content Unoccupied 00 FF FF Someone is stationary Environment 01 00 FF status 0x05 U Some people exercise 01 01 01...
  • Page 16 24G Bio-aware radar interface content Abnormal When the radar is 0X0F reset 0X02 restarted or re- powered, an abnormal reset command is reported before the initialisation process begins and a successful Initialisation initialisation successful 0X0F command is 0X0A reported. This means that the radar has been initialized successfully.
  • Page 17 24G Bio-aware radar interface content When large movements of the person occur, abnormal movements Movement are indicated, informing abnormalities the user that large 0X04 movements may affect the radar's detection of breathing Shortness of breath abnormal 0X05 Out of bed 0X00 In/out of bed In bed 0X01 0x07...
  • Page 18 24G Bio-aware radar interface content Sleep quality Sleep quality 1Byte integer parameter score 0x01 data 0x05 Heart rate Heart rate 1Byte integer parameter Unit times/min value 0x01 data 0x06 Description: 1. The read-write command is the command that is transmitted from the host computer to the radar.
  • Page 21 Appendix 2: Analysis codes for motor sign parameters...
  • Page 22 Historical version update notes Release Revision Summary Data V1.0_0212 2020/02/12 First draft V1.1_0319 2021/03/19 Readjustment Add Human sensitivity explained and fall V1.2_0628 2021/6/28 sensitivity explained V1.3_0906 2021/9/06 Human sensitivity revised from 0-9 to 1-10 V1.5_0210 2022/2/10 Add initialization success command protocol V1.6_0221 2-22/2/21 Adding a forced entry unmanned gear protocol...

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