Jorjin MM5D91-00 User manual

Copyright © JORJIN TECHNOLOGIES INC. 2021
http://www.jorjin.com.tw
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a module solution provider
MM5D91-00
Presence Detection Sensor
Installation Guide
Draft 0.1

MM5D91-00-InstallationGuide-D01
Copyright ©JORJIN TECHNOLOGIES INC. 2021
http://www.jorjin.com.tw
CONFIDENTIAL
Page 1
Index
1. INTRODUCTION ................................................................................................................... 2
1.1. FLOW CHART OF PLANNING STRATEGY..................................................................................... 2
2. DESIGN THE COVERAGE IN FLOOR PARCLAN...................................................................... 4
2.1. RADAR SETUP AND MOUNTING............................................................................................. 4
2.2. EXAMPLE OF RADAR INSTALLATION IN A ROOM .......................................................................... 6
2.2.1. Example of radar installation in small room .......................................................... 6
2.2.1. Example of radar installation in big room ............................................................. 7
2.3. STEPS TO DESIGN COVERAGE IN FLOOR PLAN............................................................................. 9
2.4. DISTANCE ESTIMATION IN SIDE VIEW .................................................................................... 12
3. MICRO AND MACRO DETECTION AND SETUP.................................................................. 15
3.1. PROCEDURES OF MARCO AND MICRO LEVEL RECORDING ........................................................... 16
3.2. ABNORMAL SITUATION ...................................................................................................... 23
4. PITFALLS IN INSTALLATION ENVIRONMENT ..................................................................... 24
5. HISTORY CHANGE.............................................................................................................. 25

MM5D91-00-InstallationGuide-D01
Copyright ©JORJIN TECHNOLOGIES INC. 2021
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1. INTRODUCTION
Floor plan planning strategy is a methodology for radar installation in presence
detection device. Planning steps are shown as below.
1.1. Flow Chart of planning strategy
Figure 1-1. Flow chart of planning strategy

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Design the coverage in floor plan is to decide the number of required radars for the coverage
area. The radar configuration, placement and mounting position are the parameters to
determine.
Distance estimation in side view is to analyze the estimated covered distance. The elevation
angle of each radar is set to 45 degree in order to achieve better sensitivity. Base on the tilted
angle, the line of sight from radar to ground floor is shorter than the horizontal distance.
Distance estimation in side view can help manufacturer to predefine the suitable detected
distance.
Pitfalls in installation environment is the unstable effect for presence detection. Small
vibration of different objects will easily trigger false alarm. The small vibration can be
quantified by the micro value in calibration mode. Special precaution should be made to avoid
the pitfalls.

MM5D91-00-InstallationGuide-D01
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2. DESIGN THE COVERAGE IN FLOOR PARCLAN
2.1. Radar Setup and Mounting
Install the radar device on the wall with 45-degree elevation angle, as shown in Figure 2-1.
The coverage of the radar device is around 90-degree on E-plane and H-plane respectively.
Figure 2-1. Elevation angle Setup and Radar position
The shape of the coverage is similar to a cone with a hemisphere added at the end. Height
of the cone depends on the maximum detection range setting, which could be set from 1m to
5m.
Figure 2-2. Radar coverage in side view

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The top view coverage is a 90-degree arc area. Radius of the arc depends on the maximum
detection range setting. (5m in this example).
Figure 2-3. Radar coverage in top view

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2.2. Example of radar installation in a room
Number of radars required to cover the floor plan is depending on the room size. 2 types of
room are illustrated in this example.
Figure 2-4. Analyze the floor plan
2.2.1. Example of radar installation in small room
Figure 2-5. shows a small room of size 3.2m x 3.2m, and height 2.8m. As the width and length
are both smaller than the maximum cover distance (5m), 1 radar is enough to cover the room
area. In this example, the radar is installed at corner with maximum range set to 3m. Some
margins are left to avoid the disturbance coming from curtain.
Figure 2-5. Radar setup in small room (Top view)

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The radar is mounted on the wall at 2.6m height with 45-degree elevation angle. A 0.2~0.5m
gap between curtain and coverage area is to prevent false alarm caused by curtain.
Figure 2-6. Radar setup in small room (Side view)
2.2.1. Example of radar installation in big room
Figure 2-7. shows a big meeting room of 7.2m x 4.5m, and height 2.8m. As the length of room
is exceeding maximum cover distance (5m), 3 radars are used to cover the room. The radars
are installed at opposite side of the curtain to avoid the disturbance from curtain movement.
Maximum setting of the 3 radars are set to 4m.
Figure 2-7. Radar setup in big room (Top view)

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The 3 radars are mounted on the wall at 2.6m heght with 45-degree elevation angle. A 0.5m
gap between curtain and coverage area is to prevent false alarm caused by curtain
movement.
Figure 2-8. Radar setup in big room (Side view)

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2.3. Steps to design coverage in floor plan
This section provides detailed procedures to design the radar configuration for covered range.
Microsoft PowerPoint is used as the tool for doing the estimation. An example design flow is
provided as below. The scale using is 1:50, which means 2cm represent 1m.
1. Draw a 1:50 scale block and place the floor plan in the block
Figure 2-9. Floor plan measurement
2. Select Shapes and choose Partial Circle to create the radar detected area. Set angle of
the partial circle from to 90 degree.
Figure 2-10. Radar coverage shape creation