FOXTECH EH50 TIRM Thermal Camera User Manual

EH50 TIRM Thermal Camera
User Manual
V1.0 2022.5

Product Introduction

1.1 Introduction
EH50 is a high-precision 3-axis gimbal integrated with a 50mm lens 640*480 IR thermal sensor. It supports IR thermal image switch, IR color palette switch, photographing and video, target tracking and thermal digital zoom. OSD can display angle, digital zoom times, status of record and picture mode, tracking frame, also can select to turn off the OSD.
When the external GPS and time input, GPS coordinate and shooting time can be saved in image file, OSD can display GPS and real-time as well. The 3 axis gimbal can achieve stabilization in yaw, roll and pitch. The integrated design of damping system and gimbal can greatly reduce mechanical vibration.
EH50 is widely used in UAV industries of public security, electric power, fire fighting, zoom aerial photography and other industrial applications.

1.2 In the Box

Installation Instruction

2.1 Overview

• Please ensure that there isn’t any obstacle while the motor rotating.
• Please remove the obstacle immediately if gimbal camera is blocked during rotation.
• Don’t put the infrared thermal camera towards the sun in case any burn to the camera

2.2 Control Box Printing

2.3 Device Dimensions

2.4 Install Mounting Part

1. Find out the arrow on the gimbal which indicating the yaw heading of the payload (i.e. the lens direction when the camera power on), and synchronize with the direction specified by the UAV.
2. Fix one end of the copper cylinder on the screw hole of lower damping board, and use M3 screw to fasten it.
3. According to the provided screw hole dimension you can make suitable mounting holes on the UAV mounting board, and fixes the other end of the copper cylinder on the mounting board of the UAV.

2.5 Quick-mount Release Instruction

1. Make sure the two white stripes indicated in above picture are aligned with each other. (If the stripes are not aligned to each other, please pinch the connector part and turn it to left manually)
2. Align the white dot (unlock icon) to the red triangle (below unlock button), push the gimbal into the board completely and then rotate the gimbal camera anticlockwise.
3. When you hear “click” sound (when red dot is aligned to the red triangle) means the gimbal camera and the board has been locked.
4. To unlock the gimbal, you need to press on unlock button and  rotate the gimbal camera clockwise till the white dot align to the red triangle. Then pull the gimbal out from the board.

2.6 Install TF Card

TF (Micro SD card): Install the TF card to the card slot (Re. 2.1 Overview). Support max 128GB. Request Class 10 (10m/s) transmission speed or higher and FAT32 or exFAT format.

• Make sure device is power off when inserting the TF card, hot plugging is not supported.

2.7 Image Output Interface

HDMI: micro HDMI output, HD 1080P 60/50/30/25fps, 1080P 60fps as default. (Optional)
Network: Ethernet output interface, support RTSP/RTMP/UDP/ONVIF video streaming. Default: RTSP output, IP address: RTSP://192.168.2.119:554, output resolution: 720P (record in 1080p), frame rate: 25fps, bit rate: 2M. (Optional)
SDI: SMA outer screw inner hole interface, 1080P 30fps output.
(Optional)
AV: no AV output

• Above output mode is optional, HDMI and SDI output cannot coexist at the same time. Please subject to your actual product.
• When using user interface software Viewlink for network connection, the network of external device (computer) should be the IP address: 192.168.2.2 (choose the last byte among 2~254, can not be 119 same as the gimbal), subnet mask: 255.255.255.0, Default gateway: 192.168.2.1, and all firewalls of the computer must be closed. Then enter the IP address of the gimbal camera, Open Video, the video stream can be outputted.

Signal Control

3.1 PWM Control
Control the gimbal camera functions by the multiplex pulse width modulation signal outputted by PWM channel of the remote control receiver. The camera needs up to 6 control channels of PWM (to expand tracking function use up to 7 PWM channels). You can choose needed functions according to actual usage to reduce the required number of PWM channels.
3.1.1 PWM Connection Diagram (Connect pitch channel as example)

3.1.2 PWM Control Operation Instruction

1. Pit (PWM Pitch channel in to control Pitch. Joystick, rotary knob or 3-gear switch on remote control are optional. 3-gear switch as example.)
   | |
   ---|---|---
   Low Gear
   Pitch Up| Middle Gear
   Pitch Stop| High Gear
   Pitch Down
2.  Yaw (PWM Yaw channel in to control Yaw. Joystick, rotary knob or 3-gear switch on remote control are optional. 3-gear switch as example.)
   | |
   ---|---|---
   Low Gear
   Yaw Left| Middle Gear
   Yaw Stop| High Gear
   Yaw Right
3. Mode (PWM Mode channel in to adjust speed control/one key to Home position etc functions. Rotary knob or 3-gear switch on remote control are optional. 3-gear switch as example.)
   | |
   ---|---|---
   Low Gear| Middle Gear| High Gear

Position 1: Low speed mode, control pitch / yaw with this mode at lowest speed
Position 2: Middle speed mode, control pitch / yaw with this mode at middle speed
Position 3: High speed mode, control pitch / yaw with this mode at highest speed
(If it is controlled by rotary knob, the speed will change according to switch position)
Function of continuous switching:
3.1) Operate 1 time continuously and quickly, from position 2 – 3 – 2, to Home position.
3.2) Operate 2 times continuously and quickly, from position 2 – 3 – 2 – 3 – 2, the camera lens looks vertically down.
3.3) Operate 3 times continuously and quickly, from position 2 – 3 – 2 – 3 – 2 – 3 – 2, to disable Follow Yaw Mode (gimbal yaw not follows by frame)
3.4) Operate 4 times continuously and quickly, from position 2 – 3 – 2 – 3 – 2 – 3 – 2 – 3 – 2, to enable Follow Yaw Mode (gimbal yaw follows by frame)

4. Zoom (PWM Zoom channel in to control Zoom. Joystick, rotary knob or 3-gear switch on remote control are optional. 3-gear switch as example.)
   | |
   ---|---|---
   Low Gear
   IR digital zoom| Middle Gear
   No control| High Gear
   IR color palette switch

Switch from Position 2 to 1: IR color switching: white hot, black hot, pseudo color.
Switch from Position 2 to 3: IR digital zoom: 3x, 6x, 9x, 12x.

5. Focus (PWM Focus channel is to control IR color palette switch.
   3-gear switch as example.)

| |
---|---|---
Low Gear
No control| Middle Gear
No control| High Gear
IR color palette switch

Switch from Position 2 to 3: IR color switching: white hot, black hot, pseudo color.

6. Pic/Rec (PWM Pic/Rec channel in to control take picture and record. Joystick, rotary knob or 3-gear switch on remote control are optional. 3-gear switch as example.)
   | |
   ---|---|---
   Low Gear| Middle Gear| High Gear

Switch from Position 2 to 1: Take a picture OSD display ‘REC IMG’ a second.
Switch from Position 2 to 3: Start record / repeat operation to stop record
Start record, the OSD display rec hh:mm:ss.
Stop record, the OSD display STBY.

7.  Multi: tracking control
   | |
   ---|---|---
   Low Gear| Middle Gear| High Gear

Switch from Position 2 to 1: Cancel tracking
Switch from Position 2 to 3:

• Exit the tracking, display the lock frame in the center of the screen, start tracking Switch from Position 3 to 2:

• “+” appears in the center of the screen, adjust the cross cursor
  UDLR with yaw and pitch control to lock target object Switch from Position 2 to 3 again:

• Choose another target for second tracking

3.2 Serial Port / TTL Control

TTL communication requirements: TTL signal is 3.3V, baud rate:
115200, data bit 8, stop bit 1, no parity, HEX send and receive.
Connection Diagram (PC – USB to TTL Cable- Gimbal Camera as example):

Connection Diagram

Diagram of USB to TTL Cable:

Connect the camera to the upper computer by USB to TTL cable (Adopt connection method of TX to RX, RX to TX, GNG to GND at Dupont ends of the provided USB to TTL cable, connect to the specified TTL of the gimbal, and the USB end of the cable connect to computer).
Install Viewlink control software to test the functions directly.
Users may choose to develop their own software, please contact technical support for TTL control protocol file.

• Connect serial port of gimbal to pins, DO NOT connect with power supply.
• The default baud rate of serial port is 115200, which can be changed according to the docking equipment.

3.3 S.BUS Control

Control the gimbal camera functions by one combining signals.
Connect the external S.Bus to S.Bus port on the control box, and the external S.bus signal GND connect to the GND interface of the control box.
Wiring Diagram (Take Futaba remote control for example):

S.Bus control mode: default S.Bus signal channel 9-15 to control gimbal camera functions (the function of channel is consistent with corresponding channel in PWM function description)

• Channel 9: Yaw Control

• Channel 10: Pitch Control

• Channel 11: Mode Control

• Channel 12: Zoom Control

• Channel 13: Focus Control

• Channel 14: Pic/Rec Control

• Channel 15: Multi Backup

• TTL control and S.bus control cannot coexist at the same time for standard version. The defualt control is TTL if no requirement. The user can set to S.bus control if needed (please contact with our technical support for the setting instruction.)

• User can set the channels by setting serial command according to the actual requirement. The S.Bus channel position can be arranged in any sequence within channel 1-15 to connect with the flight controller or remote control.

3.4 TCP control
For cameras with Ethernet output, the default IP address is: 192.168.2.119, control port: 2000. You can send the corresponding protocol to realize TCP control after connecting.
The TCP control protocol is [Frame header: EB + command ID: 90 + data body (serial port protocol) + Checksum (CS = body checksum, checksum is calculated as a sum of all bytes of data body modulo 256)]. Or directly use UI Viewlink to control after TCP connection.

Specification

Hardware Parameter

Working voltage| 12V
Input voltage| 3S – 6S
Output voltage| 5V (connect with PWM)
Dynamic current| 500mA-1000mA @ 12V
Idle current| 500mA @ 12V
Working environment temp| -20 C – +60 C
Output| micro HDMI(1080P 60fps) / IP (720p/1080p 25fps/30fps)
Local storage| TF card (Up to 128G, class 10, FAT32 or ex FAT format)
Photo storage format| JPG(19201080 / 1280720)
Video storage format| MP4 (1080P/720P 25fps/30fps)
Control method| PWM / TTL / S.BUS / TCP(IP output)
Gimbal Spec
Mechanical Range| Pitch/Tilt: – -90-120°,Roll: ±38°, Yaw/Pan: ±300° / ±360°N
(IP / SDI output version)
Controllable Range| Pitch/Tilt: -45° — 90°,
Yaw/Pan: ±290° / ±360°N (IP / SDI output version)
---|---
Vibration angle| Pitch/Roll: ±0.02°, Yaw: ±0.02°
One-key to center| √
Thermal Imager Spec
Lens size| 50mm
Horizontal FOV| 12.
Vertical FOV| 9.
Diagonal FOV| 16.
Detective Distance (Man: 1.8×0.5m)| 1471 meters
Recognize Distance (Man: 1.8×0.5m)| 368 meters
Verified Distance (Man: 1.8×0.5m)| 184 meters
Detective Distance (Car: 4.2×1.8m)| 4510 meters
Recognize Distance (Car: 4.2×1.8m)| 1127 meters
Verified Distance (Car: 4.2×1.8m)| 564 meters
Working mode| Uncooled long wave (8pm-14pm) thermal imager
Detector pixel| 640480
Pixel size| 17pm
---|---
Focusing method| Athermal prime lens
Emissivity correction| 0.01-1
NETD| 550mK (@25 C )
MRTD| 5650mK (@characteristic frequency)
Image enhancement| Auto adjust image brightness and contrast ratio
Color palette| White, iron red, pseudo color
Auto Non-uniform correction| Yes (no shutter)
Digital zoom| 3X, 6X, 9X
Sync correct time| Yes
Thermometry type| Temperature bar (psudo color display) max temp, min temp, FOV center temp (Optional)
Temperature warning| 0 C —120 C (For thermometry version only)
Thermal Imager Object Tracking
Update rate of
deviation pixel| 50Hz
Output delay of deviation pixel| 5ms
Minimum object size| 3232 pixel
Maximum object size| 128128 pixel
Tracking speed| 32 pixel/frame
---|---
Object memory time| 100 frames (4s)
Packing Information
N.W.| 948g
Product meas.| 118.6133.6*193.6mm
Accessories| 1 pc gimbal camera device, screws, copper cylinders, damping balls, damping boards, 1 pc USB to TTL cable / box

FAQ

1. Does EH50 support taking photos during recording ？

A: Yes.

2. How to set the storage format of EH50?

A: When the IP output resolution is set to 1280720, the storage resolution is 1920 1080; Storage resolution is 1280 720 when the IP output resolution is set to 19201080; The video frame rate saved in the TF card is the same with the one set during IP output. The frame rate is 25fps or 30fps for optional.

3. Does EH50 support simultaneous TCP control for multiple devices?

A: Yes

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