seeed studio Fall Detection Module Pro User manual

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

1. 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 number.
• 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 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, 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 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
2.!3. RF performance
Parameters
Operating frequency (fTX)
58
-
63.5
GHz
Transmitted power (Pout)
-
-
6
dBm
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

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 radar module beam coverage is shown. The radar coverage is a three-
dimensional 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
b) Accuracy rate: ≥ 90%
//Projection radius

c. Motion detection functions
a) Motion triggering
b) Motion direction and position sensing
5. 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.
6. 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.