MR24BSD1 1
MR24BSD1 Product features • Stationary Body Detection • Vital signs detection • 24GHz millimetre wave radar sensor • Based on Doppler radar technology, enabling radar scanning area person sensing functions. • Realisation of simultaneous sensing functions for moving and stationary persons. • Maximum distance for human sleep quality monitoring: ≤ 2.75m • Maximum distance for human breathing rate detection: ≤ 1.
MR24BSD1 CONTENTS 1. Overview .......................................................................................................................................4 2. Electrical characteristics and parameters ................................................................5 2.1. detection angle and distance ............................................................................5 2.2. electrical characteristics ........................................................................................
MR24BSD1 6.5. health care applications ..................................................................................... 13 7. Notes ............................................................................................................................................ 14 7.1. start-up time .............................................................................................................. 14 7.2. effective detection distance ...............................................................
MR24BSD1 1. Overview The MR24BSD1 radar module is a radar detection module for human motion sensing and human bio-awareness using millimetre wave radar technology. The module is based on an enhanced Doppler radar signal processing mechanism, which enables the wireless sensing and reporting of the presence and fall status of a person in a specific location through the simultaneous sensing of the Doppler parameters of the person's movement and the physiological parameters of the person.
MR24BSD1 • Universal UART communication interface, providing a common protocol 4 groups of I\O are reserved for user-defined input and output, or simple interface simulation • The output power is low, no harm to human body. • This module is not affected by temperature, light, dust and other factors, high sensitivity, wide range of applications. 2. Electrical characteristics and parameters 2.1.
MR24BSD1 Operating parameters Minimum Typical Maximum value values value -20 - +60 ℃ -40 - +80 ℃ Unit (IIO) Operating temperature (TOP) Storage temperature (TST) 2.3. RF Performance Launching parameters Operating frequency (fTX) 24.0 - 24.25 GHz Transmitted power (Pout) - - 6 dBm 3. Module dimensions and pin description 3.1. Module size package Fig.
MR24BSD1 3.2. pin descriptions Interface Pins Description Typical values 5.0V Description 1 5V Positive power input 2 GND Ground Interface 3 RX Serial port reception 1 4 TX Serial port send 5 S1 3.3V/0V occupied/unoccupied 6 S2 3.3V.0V Stationary / Active 1 3V3 3.3V Output power 2 GND Ground 3 SL Reserved Interface 4 SD Reserved 2 5 GP1 Spare expansion pins 6 GP2 Spare expansion pins 7 GP3 Spare expansion pins 8 GP4 Spare expansion pins Notes 1.
MR24BSD1 3.3. using the wiring diagram Fig. 2 Schematic diagram of the radar module and peripheral connections 4. Main operating performance 4.1 Radar module operating range The MR24BSD1 radar module beam coverage is shown in Figure 4. The radar coverage is a three-dimensional sector of 40° horizontally and 40° tilted.
MR24BSD1 Fig. 4 Diagram of the MR24BSD1 radar coverage area Due to the radar beam characteristics, the radar has a relatively long range in the direction normal to the antenna face, but a shorter range if it deviates from the antenna normal. When the radar is mounted on top or at an angle, the radar beam range and the effective radiation space will reduce the radar range, which needs to be taken into account when using the radar. 4.2.
MR24BSD1 5.1.2 Sleep quality assessment function When using the Sleep Detection Radar for sleep quality assessment and sleep time recording, the installation is only available as a top-mounted or tilt-mounted installation, with a radar height of no more than 2.75 m. The installation scenario is only suitable for resting areas such as the top of a bedroom bed. Caution. A.
MR24BSD1 movement status of people in the current radar detection area, the main states are 1. No person present. 2. occupied, stationary. 3. occupied, active. State operation mode, in order to environmental state judgment accuracy, the radar module internal logic discriminate work, the radar module state output logic is as follows. A, radar equipment only when a state change is detected, the radar has the corresponding state output; conversely, the radar remains silent. B, switching time ≤ 1s.
MR24BSD1 functions of the sleep detection radar are required, the installation method can only be selected as top-mounted or tilt-mounted, with the radar installation height not higher than 2.75m, and the installation scenario is only suitable for resting areas such as the top of the bedroom bed 6.
MR24BSD1 privacy issues. The radar is installed in the room and can monitor in real time whether there is a moving target in the room, the direction of movement of people, the presence of people and so on. And through the IoT transmission methods and means, combined with the relevant IoT support platform, to achieve the effective application of the relevant places. This radar can be applied in the following areas.
MR24BSD1 • Alarm automatic communication with emergency contacts applications 7. Notes 7.1. start-up time As the module requires a complete reset of the module's internal circuitry and a full assessment of the environmental noise when the module initially powers up and starts to operate, it is necessary to ensure that the module works properly. Therefore the module needs a power-on stabilisation time of ≥ 30s at initial power-up operation to ensure the validity of the subsequent output parameters. 7.2.
MR24BSD1 In order to ensure the normal operation of the module's internal VCO circuitry, the power supply to the module is required to be +5V to +6V with a voltage ripple of ≤100mV. The external power supply must provide sufficient current output capability and transient response. 8. Common problems Interference factors: Radar is an electromagnetic wave detection sensor and moving inanimate objects can lead to false alarms. Movement of metals, liquids, can lead to false positives.
MR24BSD1 encouraged to comment on recent updates to the product and support tools. 10. Copyright notice The components and devices referred to in this document are references to material published by their copyright holders and the right to modify and publish them belongs to their copyright holders. 11. Historical version update notes Revision Release Data Summary V1.
