MR60FDA2 60GHZ mmWave Sensor takes a long time to detect Fall Status

gvt123 · February 15, 2025, 11:14am

I recently bought MR60FDA2 and tested it with the fall_demo code as shown:

github.com/Love4yzp/Seeed-mmWave-library

examples/fall_demo/fall_demo.ino

main


#include <Adafruit_NeoPixel.h>
#include <Arduino.h>
#include <hp_BH1750.h>  //inlude the library
#include "Seeed_Arduino_mmWave.h"

#ifdef ESP32
#  include <HardwareSerial.h>
HardwareSerial mmwaveSerial(0);
#else
#  define mmwaveSerial Serial1
#endif

#define LIGHT_GPIO D0

/****** instance ******/

hp_BH1750 BH1750;  // create the sensor object

SEEED_MR60FDA2 mmWave;

This file has been truncated. show original

I realized it took about 20 seconds for the Sensor to change the status to “EXIST_PEOPLE” to " PEOPLE_FALL"

I would like to ask if there is any API or method or writing bytes to change the settings of the MR60FDA2 by shortening the time to confirm a FALL?

PJ_Glasso · February 15, 2025, 7:13pm

Hi there,
So I’m interested in this as well, Radar vs. IMU on a wearable by the patient. I doubt any firmware code can be changed AS I’m pretty sure it’s proprietary firmware. Let’s see what the Fellow Seeeder’s have to say…BUMP?

HTH
GL PJ

Marco_Mura · February 17, 2025, 3:37pm

Hi!
I have purchased some MR60FDA2 modules too. I don’t think you can change that. Beside this, I am experiencing some issues with the module’s functionality. Specifically, the sensor outputs false positives (i.e., detects a fall) when a person is sitting on a chair at the edge of the fall detection area. Is anyone having a similar problem?

gvt123 · March 17, 2025, 12:13pm

hi seeed studio team, is there any updates for this?

EDUARDO1963 · September 28, 2025, 11:01pm

I’m trying to use this device in the bathroom of an asylum as a contribution to the safety of the elderly individuals, I wanna know how these variables (rect_XL , rect_XR, rect_ZF, rect_ZB) are set and how they interfire in the ps rocess.
Thee height is 2.3 m, sensitivity is 6 and threshold is 1.
The values get from the radar for the variables are all 0.3.
Best reggards,
Eduardo

PJ_Glasso · September 28, 2025, 11:26pm

Hi there,

And Welcome here…

So those are parameters for the BOX consider a detection ZONE if you will the object needs to pass through it or be in it AFAIK. Check the WIKI on the finer points and I pretty sure there is a thread on here about that.

if its on the ceiling be sure no LED or Light fixtures are near it.

You get it… lots of success has been reported but also with some angst to get it dialed in.

HTH
GL PJ

EDUARDO1963 · September 29, 2025, 3:10pm

Hi Glasso, thanks for your help. I’ve already studied the content available in the Wiki. I tried to change these parameters using the GUI, but despite the instructions showing how to do that, it doesn’t work.
The current value is only 0.3 m, which is much too small for the detection area.

PJ_Glasso · September 29, 2025, 5:26pm

HI there,

Ok, So I can say when I tested the Similar unit (mm/wave) , I had to do some strange connect at one Baud rate then Change it in the BLE trick/procedure for the App to work (the raw data is there), once I stumbled through it, You’ll see in the video posted, it worked well and was very accurate and repeatable.
There is also a Youtube video, with the setup and it’s working above a man in a chair He get’s up simulates the fall down and it’s detected as well as he is breathing kinda thing. It is an asian video not sure where but for a convention on medical devices.

More and more of these are coming out and so is the Science behind how they actually work, keep looking you’ll find it out. I’ll look and post back if I can find it too.

HTH
GL PJ

ps. the main take away was it had to be very sturdy mounted two or some inches below the ceiling (there’s a drawing in the wiki or datasheet for the sensor) and the detection box calibrated to be 2 inches off the floor with the far end of the measurement zone. if that makes sense.