U20CAM-9281M
OV9281 Mono Sensor UVC Module
UVC Series Global Shutter Camera Module
1 General
1.1 Description
U20CAM-9281M is InnoMaker UVC Series Module with 1MP 1/4″ monochrome global shutter
OV9281 image sensor,low distortion USB 2.0 camera.Feature with external hardware trigger and
stobe function.Shoot high-speed moving objects in crisp sharp images. Avoid the rolling artifacts
to get a much more accurate complete picture than the rolling shutter cameras. Reserved
external trigger ports, support trigger via external signal.)
1.2 Features
U20CAM-9281M is a 1M global shutter UVC camera module by mono sensor ov9281;
Compatible with USB2.0,USB3.0 plug and play for Windows,Linux,Mac Os devices;
Support hardware external trigger mode and live streaming mode;
Easily wire external trigger pins and strobe pins by 2.0mm pin headers;
Featured with wide angle fixed M12 LEN FOV Up to 148 degree;
1.3 Specification
Model Name
U20CAM-9281M
Dimension
32mmx32mm
Sensor
Monochrome global shutter OV9281
Pixel Size
3μm*3μm
Resolution
1MP 1280(H)x800(V) Frame rate MJPG Max 120fps,Default 30fps
Output Format
MJPG/YUY2
Len
FOV148°（H） M12 18mm Len Seat No IR filter, sensitive to IR
Input Voltage
Power:5V Current:86mA 0.42W
Shutter Mode
Global Shutter
Image Color
Monochrome
USB Interface
Vendor：1.25mm-5P ZZ-MS，Shouhan
Auto
Parameters
White Balance（Manual Option）,Exposure（Manual Option）
Controllable
Parameters
Brightness,Contrast,Hue,Saturation,Sharpness,Gamma,White
Balance,Backlight Comp,Gain,Exposure,PowerLine Frequency,Low Light
Compensation
Support OS
Windows, Linux, Mac Os with UVC Drivers Devices
Cable Length
1M
U20CAM-9281M
OV9281 Mono Sensor UVC Module
UVC Series Global Shutter Camera Module
External Trigger
Support. Use UVC Parameters “Focus”
Working
Conditions
Operating Temp: -20°C-70°C, Humidity:80-85%
MJPG Output
Resolution
1280x800 120fps,30fps,15pfs,10fps
1280x720 120fps,60fps,30fps,20fps,15pfs,10fps
800x600 120fps,60fps,30fps,20fps,15pfs,10fps
640x360 120fps,60fps,30fps,20fps,15pfs,10fps
640x400 120fps,60fps,30fps,20fps,15pfs,10fps
640x480 120fps,60fps,30fps,20fps,15pfs,10fps
320x240 120fps,60fps,30fps,20fps,15pfs,10fps
320x200 120fps,60fps,30fps
YUY2 Output
Resolution
1280x80 10fps
1280x720 10fps
800x600 10fps
640x400 30fps,20fps,15pfs,10fps
640x480 30fps,20fps,15pfs,10fps
320x240 60fps,30fps,20fps,15pfs,10fps
320x200 60fps,30fps,20fps,15pfs,10fps
1.4 Resolution Frame Rate
Output Resolution And Frame Rate
Output Format
Resolution
Frame rate (FPS)
Maximum
MJPG
1280x800
10,15,30,120
1280x800@120fps
1280x720(720p)
10,15,20,30,60,120
800x600
10,15,20,30,60,120
640x360(360p)
10,15,20,30,60,120
640x400
10,15,20,30,60,120
640x480
10,15,20,30,60,120
320x240
10,15,20,30,60,120
320x200
120,60,30
YUY2
1280x800
10
1280x800@10fps
1280x720(720p)
10
800x600
10
640x400
10,15,20,30
640x480
10,15,20,30
320x240
10,15,20,30,60
320x200
10,15,20,30,60
U20CAM-9281M
OV9281 Mono Sensor UVC Module
UVC Series Global Shutter Camera Module
2.2 Camera LEN
Interface: M12
Field of view Fov(D) = 148Degree
Focal Length 2.8 mm
Focal Distance Adjustable
TV DISTORTION <-17%
F(N) /Aperture 2.2
Len Seat: 18mm
2.3 External Trigger Signal
PINS
Description
FSIN +
3.3v-5v External Trigger Input
FSIN -
External Ground GND
Reference Circuit
For example, VDC = 12V, Vf = 1.25V
And there is a resistor on board(R4 = 200Ω), So the R_add = R1 - R4 = 537.5 - 200 = 337.5Ω
U20CAM-9281M
OV9281 Mono Sensor UVC Module
UVC Series Global Shutter Camera Module
2.4 STROBE Signal
PINS
Description
STROBE +
Sensor STROB+
STROBE -
Reference Circuit
On-board TLP281 optocoupler isolation, Notice the max collector current is 50mA.
So If the current required to drive the Flash LED is no more than 50mA
The value of series resistor: R1 = ( VCC- Vf - VCE ) / If
VCC: system Voltage
Vf: Forward voltage of Flash LED for current Icc
VCE: Collection Emitter voltage, typical:0.1V
If the current required to drive the flash exceeds 50mA, then it is required to drive it with the
help of LED driver circuit, and LED driver circuit can be controlled by using the strobe output pin.
U20CAM-9281M
OV9281 Mono Sensor UVC Module
UVC Series Global Shutter Camera Module
2.5 USB Connector
Vendor：
SHOU HAN(首韩)
Name:1.25mm-5P ZZ-MS
1
5V
5V Power
2
DM
USB 2.0 Data-
3
DP
USB 2.0 Data+
4
GND
Ground
5
GND
Ground
3 External Trigger Model
The external trigger mode is to accepts the external input signal to trigger the image output.
When the rising edge of the external trigger signal coming, it can output an image.
Therefore, it is very suitable for capturing high-speed moving objects. In addition, the sensor
enables the sleep state will greatly reduce the power consumption.
3.1 Enable Trigger Model
We set UVC Parameters “Focus” as the trigger Model Enable options.
Open AMCAP.EXE，Choose “USB Camera” from “Devices”
U20CAM-9281M
OV9281 Mono Sensor UVC Module
UVC Series Global Shutter Camera Module
From “Options” Choose “Video Capture Filter”
From “Camera Control” Find “Focus”, uncheck to enable it.
You can see the preview stop and enter
3.2 Adjust exposure Manually
This is necessary for fast move object.
There is a switch behind the Exposure slider in the Camera Control. Select it to start manual
exposure mode.
U20CAM-9281M
OV9281 Mono Sensor UVC Module
UVC Series Global Shutter Camera Module
3.2 Hardware Connection And Script
Our sample use for raspberry pi, more information please refer to chapter 2.3,We use
Raspberry PI GPIO 23 generate 3.3V pulse signal.Connect Raspberry PI GPIO23 to FSIN+,
GND To FSIN-,Run command to start sudo ./gpio-sysfs
U20CAM-9281M
OV9281 Mono Sensor UVC Module
UVC Series Global Shutter Camera Module
3.2 Strobe Connection
When the image is output, a flash signal output from S can drive flash to enhance exposure.
The stroboscopic signal of the sensor can set the light point or time parameter. However, it
can only output a fixed strobe signal because of a fixed UVC Camera configuration.
