seeed studio MR24HPC1 24GHz mmWave Sensor Human Static Presence Module Lite User Guide
- June 9, 2024
- seeed studio
Table of Contents
seeed studio MR24HPC1 24GHz mmWave Sensor Human Static Presence Module
Lite
Overview
For several common application scenarios in real life, the following provides
some commonly used settings experience values for reference. When using them
for the first time, you can set them based on the reference values. If the
effect is not good, you can flexibly adjust them based on the parameter
introduction in the User Manual.
This template will be divided into two parts: one is the parameter setting
under Standard mode, and the other is the parameter setting under Custom mode.
For the vast majority of users, the standard mode functions are sufficient. We
recommend that you first try using the standard mode, and if the desired
effect cannot be achieved, consider using the custom mode.
Under custom mode, the parameter settings require the user to send a command
to the radar to enable the custom mode function before they can be set. After
sending the command to end the setting to the radar, it should be saved and
take effect.
Parameter Setting Template Under Standard Mode
Bathroom Scene
Environmental description: The room area is between 3.5 ~ 6 ㎡. There are
facilities such as a washbasin, glass door, exhaust fan, and toilet in the
room. The source of interference in the room is the exhaust fan.
Sensor installation suggestion: Install it at the top in the middle of
the bathroom. Setting Template: Select “Bathroom Mode” for scene mode and set
sensitivity to “1”.
The format of the command to be sent is (in hexadecimal):
- 53 59 05 07 00 01 03 BC 54 43
- 53 59 05 08 00 01 01 BB 54 43
Reason: Due to the small size of the bathroom, the bathroom mode with sensitivity 1 can be selected (the radar wave cannot penetrate solid walls, but can penetrate glass, partition walls, etc.). The radar should be at least 0.5m away from the exhaust fan.
Bedroom Scene
Environmental description: The room is approximately 20 ㎡ in size and
contains facilities such as air conditioning, fans, and a bed. Interference
sources in the room include air conditioning and fans. The radar cannot
accurately distinguish between humans and pets, so pets may also interfere
with the normal detection of the radar.
Sensor installation suggestion: It is recommended to install the radar at
a central position in the bedroom, preferably slightly closer to the bed to
ensure coverage of the sleeping area.
Setting Template: Select “Area Detection Mode” for scene mode and set
sensitivity to “2”.
The format of the command to be sent is (in hexadecimal):
- 53 59 05 07 00 01 04 BD 54 43
- 53 59 05 08 00 01 02 BC 54 43
Reason: If the dynamic detection range is too large/small, you can
correspondingly set the Bathroom/Bedroom Mode. If the static detection range
is too large/small, you can correspondingly set sensitivity 1/sensitivity 3.
(Radar waves cannot penetrate solid walls, but can penetrate glass, partition
walls, etc.)
If it is not possible to exclude interference sources such as air conditioners
and fans from the detection range, the air conditioners, fans, and other
devices must be turned off so that the radar can enter an Unoccupied state.
Office/Conference Room Scene
Environmental description: The room has an area of approximately 35 ㎡ and
is equipped with central air conditioning, curtains, and a desk. The sources
of interference in the room are the central air conditioning and the curtains.
Sensor installation suggestion: It is recommended to install it at the
top or a tilted position in the center of the room, while keeping a distance
of at least 0.5m between the radar and the exhaust fan.
Setting Template: Select “Bedroom Mode” for scene mode and set
sensitivity to “3”.
The format of the command to be sent is (in hexadecimal):
- 53 59 05 07 00 01 02 BB 54 43
- 53 59 05 08 00 01 03 BD 54 43
Reason: If the dynamic detection range is too large/small, you can set
the Area Detection/Living Room Mode accordingly. If the static detection range
is too large, you can set the sensitivity to 2. (Radar waves cannot penetrate
solid walls, but can penetrate glass and partition walls, etc.)
Note that you need to consider the impact of wind on the curtains. If the
curtains are within the radar detection range, you can reduce interference by
changing the installation position or reducing the scene mode/sensitivity.
Custom Mode Parameter Settings Template
If you want to set the following parameters, please use the command in the table below to enter custom mode.
| Function Description| Transfer direction| Frame
header| Control word| Command word| Length
Identification| Data| Checksum field| End of frame|
Note|
---|---|---|---|---|---|---|---|---|---|---|---
| Custom mode setting|
| Custom mode setting| Send| 0x53
0x59| 0x05| 0x09| 0x00| 0x01| 0x01~0x04| sum| 0x54
0x43| 0x01: Custom mode 1. 0x02: Custom mode 2. 0x03: Custom mode 3.
0x04: Custom mode 4.|
| Response| 0x53
0x59| 0x05| 0x09| 0x00| 0x01| 0x01~0x04| sum| 0x54
0x43| |
| End of custom| Send| 0x53
0x59| 0x05| 0x0A| 0x00| 0x01| 0x0F| 0xCB| 0x54
0x43
| Used to save custom parameters|
mode settings| Response| 0x53
0x59| 0x05| 0x0A| 0x00| 0x01| 0x0F| 0xCB| 0x54
0x43|
Custom mode query| Send| 0x53
0x59| 0x05| 0x89| 0x00| 0x01| 0x0F| 0x4A| 0x54
0x43|
Response| 0x53
0x59| 0x05| 0x89| 0x00| 0x01| 0x01~0x04| sum| 0x54
0x43| 0x00: Custom mode is not enabled.
0x01: Custom mode 1. 0x02: Custom mode 2. 0x03: Custom mode 3.
0x04: Custom mode 4.
Bathroom
The environmental interference factors that cannot be controlled by the
standard mode include: In the Bathroom Scene, there may be facilities such as
exhaust fans, glass doors, and curtains, and the potential sources of
interference may include slight vibrations caused by the exhaust fan or slight
swinging of metal rings on the curtain.
Sensor installation suggestion: Suggested installation is to place the radar
sensor at the top and center of the bathroom and slightly away from the
exhaust fan to reduce interference.
Setting suggestion:
Parameter value settings | Parameter value range | Instruction |
---|---|---|
Existence judgment threshold: 33 (Default) 53 59 08 08 00 01 05 C2 54 43 | ||
0~250 | When there are micro-interference sources (such as vibration from |
exhaust fans) that prevent entering an unmanned state, it is possible to
increase the existing judgment threshold appropriately.
Motion trigger threshold: 4 (Default) 53 59 08 09 00 01 03 C1 54 43|
0~250| When there are motion interference sources that prevent entering a
static state, it is possible to increase the
| | motion trigger threshold appropriately.
Existence perception boundary: 2.5m 53 59 08 0A 00 01 05 C4 54 43| 0.5m~5m|
The detection range of static/dynamic can be adjusted flexibly according to
the actual application environment to reduce interference (e.g. human
interference beyond the boundary of 2.5 meters from the room’s motion
trigger).
Motion Trigger Boundary: 2.5m 53 59 08 0B 00 01 05 C5 54 43| 0.5m~5m|
Time for entering no person state: 30s 53 59 08 0E 00 04 00 00 75 30 6B 54 43|
0~3600s| The time to enter unmanned state can be adjusted flexibly according
to actual needs.
Bedroom
The environmental interference factors that cannot be controlled by the
standard mode include: In the scenario of a bedroom at home, there may be
facilities such as air conditioners, fans, and floor cleaning robots, as well
as pets such as cats and birds. Interference sources may exist, such as the
operation of fans, air conditioners, and floor cleaning robots. Radar cannot
accurately distinguish between humans and pets, so pets may also become
interference sources and cause false alarms for the radar.
Sensor installation suggestion: It is recommended to install the radar at the
center of the ceiling and ensure that the air conditioner is not within the
detection range of the radar.
Setting suggestion:
Parameter value settings | Parameter value range | Instruction |
---|---|---|
Existence judgment threshold: 33 (Default) 53 59 08 08 00 01 05 C2 54 43 | ||
0~250 | When there are micro-interference sources (such as vibration from |
exhaust fans) that prevent entering an unmanned state, it is possible to
| | increase the existing judgment threshold appropriately.
Motion trigger threshold: 4 (Default) 53 59 08 09 00 01 03 C1 54 43| 0~250|
When there are motion interference sources that prevent entering a static
state, it is possible to increase the motion trigger threshold appropriately.
Existence perception boundary: 3m 53 59 08 0A 00 01 06 C5 54 43| 0.5m~5m| The
detection range of static/dynamic can be adjusted flexibly according to the
actual application environment to reduce interference (e.g. human interference
beyond the boundary of 2.5 meters from the room’s motion trigger).
Motion Trigger Boundary: 3m 53 59 08 0B 00 01 06 C6 54 43| 0.5m~5m|
Time for entering no person state: 30s 53 59 08 0E 00 04 00 00 75 30 6B 54 43|
0~3600s| The time to enter unmanned state can be adjusted flexibly according
to actual needs.
Office/Conference Room
The environmental interference factors that cannot be controlled by the
standard mode include: In an office setting, there may be glass walls, central
air conditioning, curtains, and other facilities in the office/meeting rooms.
The interference sources may include slight vibrations caused by central air
conditioning, the metal plates swinging due to the curtains, or people walking
outside the glass walls.
Sensor installation suggestion: It is recommended to install the radar at the
top or tilt it slightly and place it away from the central air conditioning
unit.
Setting suggestion:
Parameter value settings | Parameter value range | Instruction |
---|---|---|
Existence judgment threshold: 33 (Default) 53 59 08 08 00 01 05 C2 54 43 | ||
0~250 | When there are micro-interference sources (such as vibration from |
exhaust fans) that prevent entering an unmanned state, it is possible to
increase the existing judgment threshold appropriately.
Motion trigger threshold: 4 (Default) 53 59 08 09 00 01 03 C1 54 43| 0~250|
When there are motion interference sources that prevent entering a static
state, it is possible to increase the motion trigger threshold appropriately.
Existence perception boundary: 3.5m 53 59 08 0A 00 01 07 C6 54 43| 0.5m~5m|
The detection range of static/dynamic can be adjusted flexibly according to
the actual application environment to reduce interference (e.g. human
interference beyond the boundary of 2.5 meters from the room’s motion
trigger).
Motion Trigger Boundary: 3.5m 53 59 08 0B 00 01 07 C7 54 43| 0.5m~5m|
Time for entering no person state: 30s 53 59 08 0E 00 04 00 00 75 30 6B 54 43|
0~3600s| The time to enter unmanned state can be adjusted flexibly according
to actual needs.
Warehouse and Logistics
The environmental interference factors that cannot be controlled by the
standard mode include: In the scenario of warehousing and logistics, the
primary practical application is to trigger the function. The stationary metal
storage shelves will not interfere with the radar’s detection performance,
while moving loading and unloading forklifts and pedestrian traffic can
trigger the radar to detect the presence of people as usual.
Sensor installation suggestion: It is recommended to install the radar at the top in the scenario of warehousing and logistics.
Parameter value settings | Parameter value range | Instruction |
---|---|---|
Existence judgment threshold: 33 (Default) 53 59 08 08 00 01 05 C2 54 43 | ||
0~250 | When there are micro-interference sources (such as vibration from |
exhaust fans) that prevent entering an unmanned state, it is possible to
increase the existing judgment threshold appropriately.
Motion trigger threshold: 4 (Default) 53 59 08 09 00 01 03 C1 54 43|
0~250| When there are motion interference sources that prevent entering a
static state, it is possible to increase the motion trigger threshold
appropriately.
Existence perception boundary: 5m 53 59 08 0A 00 01 0A C9 54 43|
0.5m~5m| The detection range of static/dynamic can be adjusted flexibly
according to the actual application environment to reduce interference (e.g.
human interference beyond the boundary of
2.5 meters from the room’s motion trigger).
Motion Trigger Boundary: 5m 53 59 08 0B 00 01 0A CA 54 43| 0.5m~5m
Time for entering no person state: 30s 53 59 08 0E 00 04 00 00 75 30 6B 54
43| 0~3600s| The time to enter unmanned state can be adjusted flexibly
according to actual needs.