seeed studio MR60FDA1 User manual

Table of Contents
1. Overview 4
2. Electrical characteristics and parameters 5
2.1 Detection angle and distance 5
2.2. Electrical characteristics 5
2. 3. RF performance 5
3. Module dimensions and pin description 6
3.1 Module size package 6
3. 2. Pin description 6
3.2 Using the wiring diagram 7
4. Main working properties 7
4.1 Radar module operating range 7
4.2. Main functions and performance 8
5. How the radar works and how it is installed 9
5.1. Vertical mounting mode 9
5.2. Tilt mounting mode 10
5.3. Horizontal mounting mode 10
6. Typical applications 10

1. Overview
Radar module MR60FDA1 utilizes 60G millimeter wave technology to detect human
motion and posture, enabling the fall monitoring function. This module utilizes an FMCW
radar system to enable wireless detection of personnel status at a particular location.
Radar modules have the following characteristics:
1. Realize the function of personnel position detection and report the statistics;
2. Restrict the detection object to objects with biological characteristics (moving or
stationary) and eliminate interference from other inanimate objects in the
environment;
3. This module is capable of eliminating the effects of nonliving objects and can
also detect moving nonliving objects;
4. It supports secondary development and can adapt to a variety of applications;
5. A universal UART communication interface protocol;
6. Four groups of input and output are reserved for user-defined input and output or
simple interface simulation;
7. The power output is not significant enough to course harm to the human body.
2. Electrical characteristics and parameters
2.1 Detection angle and distance
Content
Minimum
Typical
Maximum
Units
MR60FDA1
Radius of movement of people detection [1]
-
6
metre
Fall monitoring radius [2]
-
2.5
metre
Radar detection angle (horizontal)
-
100
-
degree
Radar detection angle (pitch)
-
100
-
degree
Note: [1][2] Radar hang height 2.8 m, radius of radar projection.

2.2. Electrical characteristics
Content
Minimum
Typical
Maximum
Units
Operating voltage (VCC)
4.5
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 (fTX)
58
-
63.5
GHz
Transmitted power (Pout)
-
-
6
dBm

3. Module dimensions and pin description
3.1 Module size package
Fig.1 Schematic diagram of the radar module structure
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
S1
3.3V/0V
6
S2
3.3V/0V

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
Fig.2 Schematic diagram of the radar module and peripheral
connections
4. Main working properties
4.1 Radar module operating range
The beam coverage of the radar module is shown in the figure below. It covers a three-
dimensional sector area having a horizontal angle of 100 degrees and 100 degrees
incline.

Due to the characteristics of the radar’s beam, it has a long-range coverage in the
direction normal to the antenna surface but a short-range if it deviates from the normal
direction of the antenna surface.
In addition, when the radar is mounted on top or inclined, its range will be reduced. This
is due to the influence of its beam and effective radiation space. This should be put into
consideration during usage.
4.2. main functions and performance
1. Main functions and performance
a. Fall detection function
i. Distance detection
1. Radar projection radius when installed on the top ≤ 2m
2. Inclined installation, radar projection distance ≤ 4m
ii. Accuracy: ≥ 90%
2. Presence awareness
a. Detection distance: projection radius ≤ 3m
b. Accuracy: ≥ 90%
3. Motion detection function
a. Motion trigger
b. Motion direction and position perception
5. How the radar works and how it is installed
5.1. vertical mounting mode
The radar is installed on the roof and shines vertically downward.

Radar installation height is h=2.4m ~ 3M. With a radius of radar beam coverage area of
R within the radar projection area, it is possible to further divide the projection area into
areas for fall detection, presence detection, and motion detection. The Figure below
illustrates a schematic diagram of the area.
(a) Radar projection schematic (b) Schematic diagram of beam splitting
5.2. Tilt mounting mode
Certain scenarios require the radar to be installed obliquely, such as in a corner. For this
type of installation method, the home gyroscope sensor on the radar determines the
inclination of the radar and assists the radar in adjusting the angle.
5.3. Horizontal mounting mode
Considering the number of channels of the current radar chip, the fall detection function
is not considered for horizontal installation mode.

6. Typical applications
1. The product is appropriate for small-area scenes, including those in the bathroom,
the bedroom, and the living room.
2. It is suitable for both inclined and top mounting.
3. The product is suitable for single or double occupancy.
4. The product must eliminate interference actions in consideration of application
scenarios.