Pyreos ezPyro dPYEGE01 User manual

Rev. 1.0
ezPyro™ Gesture / Motion
Evaluation Kit User Manual
For low cost, low power, non-contact mid IR
gesture and motion/presence sensing

ezPyroTM Gesture/Motion Evaluation Kit User Manual
Page 2 of 20 © Copyright Pyreos Ltd. 2020 ezPyroTM User Manual Rev. 1.0
CONTENTS
1INTRODUCTION ............................................................................................................................................ 3
2GETTING STARTED ........................................................................................................................................ 3
2.1 HARDWARE VARIANTS .......................................................................................................................................................................................3
2.2 KIT CONTENTS .................................................................................................................................................................................................. 4
2.3 MINIMUM SYSTEM REQUIREMENTS .......................................................................................................................................................................4
3INSTALLATION .............................................................................................................................................. 4
3.1 INSTALL THE EZPYROTM SOFTWARE........................................................................................................................................................................ 4
4INSTALLING THE ST MICROCONTROLLER USB DRIVER .................................................................................... 5
5INSTALLING .NET 4.5 FRAMEWORK ............................................................................................................... 5
5.1 CONNECT THE DEMO KIT .....................................................................................................................................................................................5
6RUNNING THE SOFTWARE............................................................................................................................. 6
6.1 DIFFERENT VARIATIONS......................................................................................................................................................................................7
7NAVIGATING THE MENUS ........................................................................................................................... 10
7.1 ALGORITHM TAB ............................................................................................................................................................................................ 10
7.2 ASIC CONTROL TAB........................................................................................................................................................................................ 11
7.3 WAKE-UP TAB ...............................................................................................................................................................................................12
7.4 GO TO SLEEP .................................................................................................................................................................................................13
7.5 SYSTEM TAB ................................................................................................................................................................................................. 14
8GESTURE DETECTION MODE........................................................................................................................ 15
8.1 GESTURE TRIGGER THRESHOLD OPTION................................................................................................................................................................ 15
8.2 GESTURE DETECTION ALGORITHM PEAK SPREAD....................................................................................................................................................15
9PRESENCE RECOGNITION MODE.................................................................................................................. 16
9.1 THE MAIN MENUS..........................................................................................................................................................................................17
9.2 PRESENCE ALGORITHM.....................................................................................................................................................................................17
10 POWER MODE ............................................................................................................................................ 18
11 SAVING DATA TO CSV FILE........................................................................................................................... 19
12 ABOUT ....................................................................................................................................................... 20
13 FURTHER INFORMATION AND SUPPORT...................................................................................................... 20
Please note: the information contained in this document is subject to change without further notification.

ezPyroTM Gesture/Motion Evaluation Kit User Manual
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1Introduction
This document describes the ezPyroTM Gesture/Motion Recognition Evaluation Kits and the related software. The
purpose of these kits is to enable engineers and technicians to carry out simple and effective evaluation of ezPyroTM
Gesture/Motion sensors, experiment with a sample Gesture/Motion Recognition algorithm, and to capture
measured data to a PC.
There are four variants of the ezPyroTM Gesture/Motion Recognition Evaluation Kit, see Table 1.
The kits are based on the ST microelectronics STM32F303K8 microcontroller.
Please note: The software discussed in this document can only be used with the ezPyroTM Gesture/Motion
Recognition Evaluation Kits.
2Getting Started
2.1 Hardware Variants
Evaluation Kit
Name
Evaluation
Kit Code
Number of
Pixels
Aperture
size
Optics
Algorithm
ezPyroTM Long
Range Gesture
dPYEGE01
2x2
1.65 mm
Lens
(f=6.35mm)
Directional
ezPyroTM Mid-
Range Gesture
dPYEGE02
2x2
0.90mm
Window
Only
Directional
ezPyroTM
Motion/Presence
Recognition
dPYEMO01
1
1.65mm
Lens
(f=19.5mm)
Non-
Directional
ezPyroTM Motion
Direction
dPYEMO02
2x2
1.65mm
Lens
(f=19.5mm)
Directional
Table 1: ezPyroTM Motion/Gesture Recognition Evaluation Kit variants
Figure 2: ezPyroTM Long Range Gesture Kit
Figure 1: ezPyroTM Mid-Range Gesture Kit
Figure 3: ezPyroTM Motion Kits

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2.2 Kit contents
1. ezPyroTM Gesture/Motion Evaluation Kit
2. Micro USB-to-USB cable
3. ezPyroTM Gesture/Motion Recognition software (Setup file included in software package)
4. USB drive with software and documentation
2.3 Minimum system requirements
1. Microsoft® Windows PC (all versions supported currently)
2. GB of RAM
3. 450 MB of available hard-disk space for installation, additional free space required for storing CSV files
4. 1024x768 display (1280 x 1024 recommended)
5. Local administrative rights to install device drivers
6. .NET Framework 4.5
7. 1 free USB port
3Installation
3.1 Install the ezPyroTM software
From the software pack included with the kit, select the “setup.exe” file that has this icon. This will start the
installation process.
Follow the on-screen instructions and enter the information required.
Figure 4: Installer window

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As part of the installation process a check will take place to see if .NET Framework 4.5 is present. If not, the setup
routine can be cancelled and the .NET framework 4.5 can be downloaded from Microsoft’s website.
A driver is needed for the STM32F303K8T6 microcontroller. This is included in the software package.
4Installing the ST Microcontroller USB Driver
The USB supplied contains a folder called “en.stsw-link009.zip”. Extract the files and run either the application
“dpinst_amd64.exe” if you have a 64bit system or “dpinst_x86.exe” if you have a 32bit system. This will install the
USB driver for the ST microcontroller that is connected to the ezPyroTM board.
Once the driver has been installed the USB cable can be connected between the ezPyroTM Board and the computer.
Once connected the green light on the ezPyroTM board will be on constantly and the red light will flash (The
microcontroller is the inverse of this, red is on constantly and green flashes).
5Installing .NET 4.5 framework
If you do not have the .NET 4.5 framework installed on your computer, then use the installer provided
(“dotnetfx45_full_x86_x64”) in the software package.
5.1 Connect the demo kit
Connect the USB cable to the kit and Windows PC.
You may see a message suggesting you are required to install a device driver. Follow the on-screen instructions and
download a driver from Windows Update or install from the software package provided.

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6Running the Software
Double clicking on the .exe file will open the application. This will open the window shown below:
To connect to the demo kit, select the Device -> Connect to Device
This will open a window with all available devices on COM ports.
Connect to the port that is listed once the device is connected. If more than one COM port is listed this can be
checked by disconnecting the device and refreshing the list. Re-connect and refresh the list then select the COM port
that has appeared and click OK.
Once the device has been selected the software runs through a calibration sequence, during which the arrow that
indicates a gesture direction will spin round and then vanish upon completion of the calibration. This is required
when using the device without a method of stopping drafts from running across the device.
Figure 5: Main window with no device connected
Figure 7: Connecting to an ezPyroTM device
Figure 6: Com Port selection

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6.1 Different Variations
The software will work out when it is plugged in which kit it is attached to. The left side of the window then shows
the current sensing mode. The button for the active mode, gesture, direction, or presence, is highlighted in blue.
Using kits dPYEGE01, dPYEGE02 or dPYEMO02 allows access to gesture/direction and presence sensing. dPYEMO01
only allows access to presence sensing.
Figure 9: Gesture Recognition (dPYEGE01 and dPYEGE02)
Figure 10: Presence Recognition (dPYEMO01)
Figure 8: Motion Direction (dPYEMO02)

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The main window includes four scopes
which show the signals produced by each
of the pixels in the sensor as shown in
Figure 11. The scope settings can be
altered using the sliding scales on the x-axis
and the y-axis.
Figure 11: Scope layout
By selecting Oscilloscope Full View in the Options menu, the sliding scales can
be removed.
Figure 12: Options menu
This allows the scopes to be view without
distraction.
Figure 13: Scope layout - full view

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The main window also contains a console which displays detected messages as well as any changes or errors, such as
initial start-up mode or conversion to presence sensing.
Figure 14: Window console

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7Navigating the Menus
The main window contains 4 sections: Algorithm, ASIC Control, Wake-Up, and System
7.1 Algorithm Tab
Figure 15: Algorithm tab window
The algorithm tab gives the user access to some basic settings that can be changed.
Window Size: This is window width in samples used to detect event. A larger window width allows slower
events to be detected. A smaller window width means that an event is still registered in the scopes, but the
direction icon might not activate.
•Range: 10 to 2000
•Typical: 400
Detection Threshold: This is how high the peak value must be before the event is recognised as valid.
•Range: 1 to 20
•Typical: 3
Peak Speed
Once altered these can be reset to the default values using the Set Defaults button at the bottom of the tab window.

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7.2 ASIC Control Tab
Figure 16: ASIC Control tab window
The ASIC Control tab gives the user access to the various parameters that can be controlled on the output of the
ezPyroTM.
Gain: The gains should all be set equal on every channel for gesture detection. They can be set
independently to allow the user complete control over every aspect of the device that can be set. The gain is
set by selecting a capacitor to be used in the charge amplifier within the device.
High Pass Filter (HPF): The high pass filters should again be set equal for gesture detection.
Transconductance: The transconductance gives the user the ability to set the time constant of the sensor
and amplifier set-up.
Low Pass Filter: The low pass filter used is common to all channels of the ezPyroTM.
Sampling Period: This allows the sampling rate to be altered.

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7.3 Wake-up Tab
Figure 17: Wake-Up tab window
The Wake-Up tab allows user to access the settings of the wake-up conditions for the device. The wake-up settings
only apply when the device is in sleep mode.
Thresholds 1-4: The wake-up works by requiring the signal to be within the range of threshold 1 and 2 or
within threshold 3 and 4 for a certain number of samples.
Number of Samples: This can be controlled using the box in the right of Wake-Up tab window.
Channel: This allows the user to select which channel is being used for the wake-up condition.
Apply: Clicking this sets the parameters to the user’s settings.
For more detail on wake-up conditions please refer to the ezPyroTM datasheet.

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7.4 Go to Sleep
On the left of the main window the 3rd button down (see Figure 18) puts the Evaluation Kit into sleep
mode.
When the button is selected the window goes grey and none of the settings can be accessed. This is to
ensure that the Evaluation Kit does not use excessive power when not actively in use.
To wake the Evaluation Kit up an event that meets the wake-up settings needs to occur. If these are set to impossible
levels, then the user can click on the Exit Sleep Mode button to wake-up the device and access the settings.
Figure 19: Sleep Mode information box
Figure 18: Sleep Mode selection button

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7.5 System Tab
Figure 20: System tab window
The System tab allows the user to set the orientation of the device to ensure directions of events are correctly
displayed. The initial settings for the orientation are as shown in Figure 21.
Figure 21: Device orientation

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8Gesture Detection Mode
Gestures will produce a distinct signal shape on each channel as shown in Figure 22.
The faster the gesture, the closer together the peaks in the signals are. If the signal peaks are small (can be caused by
the hand temperature being close to background temperature), it is recommended to reduce the sensitivity in the
settings window as will be described later.
8.1 Gesture Trigger Threshold option
Setting the threshold for gestures to be lower will cause a greater chance of false gestures being registered caused
by noise. And setting too high will make registering actual gestures less likely.
8.2 Gesture Detection Algorithm Peak Spread
This value determines how far apart the peaks in signals can be before considered a gesture. The larger the value
used, the more the system is affected by noise.
Figure 22: Gesture Detection

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9Presence Recognition Mode
A presence event is one that simply states that an object of higher temperature than the background radiation has
come into or moved out of the FOV of the sensor.
The main window in both versions of Presence Recognition consists of one scope as only one pixel is required to
sense a change in temperature within the sensor’s FOV with no regard for direction.
Figure 24: Presence Recognition - dPYEMO01
Figure 23: Presence Recognition –dPYEGE01. dPYEGE02

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9.1 The Main Menus
The same ASIC, Wake-Up and System settings are available when using presence recognition or a dPYEMO01
Evaluation Kit.
The Algorithm tab is slightly different It is possible to modify the presence recognition algorithm parameters. When
a dPYEMO01 Evaluation Kit is connected, then only window size and detection threshold parameters are offered.
When Presence Recognition mode is used with the other kits then there is also the option to show a single scope or
to show all four scopes. In both instances the peak spread parameter is not available.
9.2 Presence Algorithm
The algorithm used for a presence being detected is an analysis of the rate of change of the signal. A group of 3 data
points are averaged and then the following 3 data points averaged. The averaging reduces the effect of noise on the
algorithm, more data points could be used to improve resistance to noise but that would be dependent on the
location of the device in the end application.
These two averaged values are then used to determine the rate of change of signal by differentiating with respect to
time, or the spacing between data points which in this case is three.
The detection threshold affects the required rate of change of signal to give a positive motion detection event. The
initial value of 20 give good results but again this can be adjusted depending on the applications environment and
optical setups that might be in use.

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10 Power Mode
Figure 25: Low Power Mode
Figure 26: Normal Power Mode
There are two power modes available. By default, the software runs in low power mode. This offers a faster sampling
rate and a smoother response from the sensor. In normal power mode the sampling rate is around 6 time slower and
the response from the sensor is noisier.

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11 Saving Data to CSV file
To save data, select Save to CSV from the File menu.
Figure 27: File Menu
The Capture Data to CSV File dialog box is displayed.
Figure 28: Save to CSV dialogue box
Enter the full address path to which the file should be written or browse to the required folder. By default, files are
saved to the Pyreos folder if it exists or Documents if it does not. The Pyreos folder is created automatically in the
Documents folder the first time the user saves a configuration file.
Choose options for the way data is to be captured. The options are to:
Capture data indefinitely: save data for an undetermined length of time.
Number of samples to capture: save a specific number of samples according to the sampling rate set in CSV File
Options.
Capture time xxxx ms: record data for a set time interval (in milliseconds).

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12 About
Click on About in the menu bar to display file and version information about the ezPyroTM Gesture & Motion Sensing
Evaluation Tool software.
Figure 29: About box
13 Further Information and Support
The Pyreos website has a list resources available to help our customers
https://pyreos.com/resource-centre
If you encounter any difficulties with the kit, please contact Pyreos Support
E-mail: [e-mail]