seed studio MR60FDA1 Fall Detection Radar Module User Manual
- June 4, 2024
- seed studio
Table of Contents
MR60FDA1
60GHz mmWave Sensor
– Fall Detection Module Pro
User Manual
Overview
The MR60FDA1 radar module is a radar module that uses 60G millimeter wave
radar technology for human movement and posture sensing, and thus for fall
detection. The module is based on the FMCW radar system and enables the
wireless sensing of the status of people in a specific location.
This radar module has the following operating characteristics.
- Implementing the function of detecting the position of people and counting their numbers.
- Limits detection to persons with biological characteristics (moving or stationary) and eliminates interference from other inanimate objects in the environment.
- This module effectively eliminates interference from non-living objects and also enables the detection of non-living moving objects.
- Product support for secondary development, adapting to a wide range of scenario applications.
- 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, with no harm to the human body.
- This module is not affected by temperature, light, dust, and other factors, high sensitivity, and a wide range of applications.
Electrical characteristics and parameters
2.1 Detection angle and distance
| Content | Minimum | Typical | Maximum | Units |
|---|
MR6OFDA1
The radius of movement of people detection [1]| –| 6| | meter
Fall monitoring radius [2]| –| 3.| | meter
Radar detection angle (horizontal)| –| 100| –| degree
Radar detection angle (pitch)| –| 100| –| degree
Note: [1][2] Radar hang height 2.8 m, the radius of radar projection.
2.2. Electrical characteristics
| Content | Minimum | Typical | Maximum | Units |
|---|---|---|---|---|
| Operating voltage (VCC) | 5. | 5.0 | 6 | V |
| Operating current (ICC) | 90 | 93 | 100 | mA |
| Operating temperature (TOP) | -20 | – | +60 | °C |
| Storage temperature (TST) | -40 | – | +80 | °C |
2. 3. RF performance
Parameters
Operating frequency (X)| 58| –| 64.| GHz
Transmitted power (Pout)| –| –| 6| dBm
Module dimensions and pin description
3.1 Module size package
3. 2. Pin description
| Interface | Pins | Description | Typical | Description |
|---|---|---|---|---|
| Interface 1 | 1 | 5V | 5.0V | Power supply input positive |
| 2 | GND | Ground | ||
| 3 | RX | Serial port reception | ||
| 4 | TX | Serial port transfer | ||
| 5 | 51 | 3.3V/OV | ||
| 6 | S2 | 3.3V/OV | ||
| Interface 2 | 1 | 3V3 | 3.3V | Output power |
| --- | --- | --- | --- | --- |
| 2 | GND | Ground | ||
| 3 | SL | Reserved | ||
| 4 | SD | Reserved | ||
| 5 | GP1 | Spare expansion pins | ||
| 6 | GP2 | Spare expansion pins | ||
| 7 | GP3 | Spare expansion pins | ||
| 8 | GP4 | Spare expansion pins |
3.2 Using the wiring diagram
Main working properties
4.1 Radar module operating range
The radar module beam coverage is shown. The radar coverage is a
threedimensional sector of 100° horizontally and 100° tilted.
Due to the characteristics of the radar beam, the radar acts farther in the
direction normal to the antenna face, but the distance away from the antenna
normal becomes shorter.
When the radar is mounted on top or at an angle, the radar range will be
reduced due to the radar beam range and the effective radiation space, which
needs to be taken into account when using the radar.
4.2. main functions and performance
a. Fall detection function
a) Detection distance.
i. ≤ 2 m // radius of radar projection when installed on top
ii. ≤4m // tilt installation, radar projection distance
b) Accuracy rate: ≥90%
b. Presence awareness function
a) Detection distance: ≤3m
//Projection radius
b) Accuracy rate: ≥ 90%
How the radar works and how it is installed
5.1. vertical mounting mode
The radar is mounted on the roof and is directed vertically downwards.
The radar is installed at a height of H = 2.4 m to 3 m; the radius of the
radar beam coverage area is R. Within the radar projection area, the
projection area is considered to be further divided into a fall detection
area, a presence detection area and a motion-triggered detection area, which
is shown in the diagram below.
(a) Radar projection schematic
(b) Schematic diagram of beam splitting
5.2. Tilt mounting mode
Some applications require the radar to be mounted at an angle, e.g. in the
corner of a wall.
For this type of installation, a gyroscope sensor is considered to be located
at home on the radar for radar tilt measurement, which in turn assists the
radar with angle correction.
5.3. Horizontal mounting mode
Given the current number of channels in the radar chip, the fall check
function in horizontal mounting mode is not considered for the time being.
Typical applications
A. The product is suitable for small area scenarios such as bathrooms,
toilets, and bedrooms.
B. The product is suitable for overhead installation and tilt installation
mode.
C. The product is suitable for single/twin situations.
D. The product needs to be combined with the application scenario to eliminate
interfering movements.