Trumouse Lite: System Architecture
The system comprises the Compute Unit, the Reader Array (RFID floor platform), the Industrial Camera and the Top Panel. The Top Panel integrates the White Light, Infrared Light, environmental sensor, Light Control Module, Industrial Camera and Exhaust Fan. The Reader Array, the Industrial Camera and the Light Control Module in the Top Panel are connected to the same switch by network cable and sit on the same local network as the Compute Unit, which uses the router supplied by Murinova. The Compute Unit has its own power supply; the other parts are powered from DC supplies. All communication between subsystems is wired. Apart from the 134.2 kHz LF RFID reader function, the system has no other wireless functions; see Radio Characteristics.
Figure: System topology. Solid lines indicate network cable connections; dashed lines indicate DC power. The dashed outline marks the router.
RFID Reader Array
Section titled “RFID Reader Array”The floor platform (RFID floor platform) contains reader coils arranged at equal spacing, each coil forming one reading position. The coils completely cover the activity area and read the Passive Transponder Tags implanted in the animals. The centre-to-centre spacing between adjacent coils is 100 mm. The reading positions are divided into blocks. Each block has 2 network ports and 2 DC power inputs. The network ports connect to the switch by network cable; the DC power inputs connect to one DC supply through a 1-to-2 DC splitter cable.
See Figure “Reader Array layout showing the reading positions, network ports and network cables” for the layout.
Figure: Reader Array layout showing the reading positions, network ports and network cables.
Table: Reader Array specifications
| Parameter | Value |
|---|---|
| Activity area | 600 mm × 600 mm |
| Blocks | 1 block |
| Reading positions per block | 6 × 6 |
| Total reading positions | 36 |
| Total network ports | 2 |
Imaging Subsystem
Section titled “Imaging Subsystem”The system has 1 Industrial Camera, monochrome with a global shutter, integrated in the Top Panel and connected to the switch by network cable. Power supply: External 12 V / 24 V DC supply, or powered together with the Top Panel lighting. See Table “Camera specifications” for the specifications.
Table: Camera specifications
| Category | Parameter | Specification |
|---|---|---|
| Performance | Sensor type | CMOS, global shutter |
| Pixel size | 4.8 µm × 4.8 µm | |
| Sensor size | 1/2 in | |
| Resolution | 1280 × 1024 | |
| Max. frame rate | 91.3 fps @ 1280 × 1024 (Mono 8) | |
| Dynamic range | 54 dB | |
| SNR | 40.6 dB | |
| Gain | 0 dB to 16 dB | |
| Exposure time | 10 µs to 10 s | |
| Exposure mode | Off / Once / Continuous | |
| Color | Monochrome | |
| Pixel format | Mono 8/10/10Packed/12/12Packed | |
| Binning | Supports 1 × 1, 2 × 2, 4 × 4 | |
| Decimation | Supports 1 × 1, 2 × 2, 4 × 4 | |
| Reverse image | Supports horizontal and vertical reverse image output | |
| Electrical | Data interface | Gigabit Ethernet |
| Power supply | 9 VDC to 24 VDC; PoE optional | |
| Power consumption | Typ. 1.8 W @ 12 VDC | |
| Mechanical | Lens mount | C-mount |
| Dimensions | 29 mm × 29 mm × 42 mm | |
| Weight | Approx. 100 g | |
| Ingress protection | IP30 (with proper lens installation and wiring) |
Lighting Subsystem
Section titled “Lighting Subsystem”The lighting subsystem provides illumination for video acquisition. On the Trumouse Lite, the White Light and Infrared Light are both light strips, integrated in the Top Panel and controlled by the Light Control Module in the Top Panel.
Table: White Light specifications
| Parameter | Value |
|---|---|
| Type | Light strip |
| LEDs | Full-spectrum 5050 |
| Power | Approximately 10 W |
| Lighting | Diffuse lighting |
| Control | Light Control Module |
Table: Infrared Light specifications
| Parameter | Value |
|---|---|
| Type | Light strip |
| Wavelength | 940 nm |
| LEDs | 5050 |
| Power | Approximately 24 W |
| Lighting | Direct lighting |
| Control | Light Control Module |
The Light Control Module switches the White Light and Infrared Light according to the light cycle set in the Console; the cycle can be customized (see Checking the Light Schedule).
Table: Light Control Module specifications
| Parameter | Value |
|---|---|
| Supply input | 24 V DC |
| Network interface | PoE network port, connected to the switch |
| Control protocol | MQTT |
Environmental Sensor
Section titled “Environmental Sensor”The system has 1 environmental sensor. It is mounted on and powered from the Top Panel, and connects to the switch through the Top Panel network port that it shares with the Light Control Module. The measured environmental indicators and the specifications of each channel are given in Environmental Monitoring.
Compute Unit
Section titled “Compute Unit”Data processing is performed by the Compute Unit: External commercial computer connected via standard Ethernet. The Compute Unit is an independently powered, certified commercial product, used without modification.
Network Connections
Section titled “Network Connections”The Compute Unit, Reader Array, Industrial Camera and the Light Control Module in the Top Panel are all connected to the same switch by network cable and sit on the same local network. The environmental sensor connects through the Top Panel network port.
Each Reader Array block has 2 network ports. Keep all of them connected by network cable, 2 cables in total.
All devices connected through network ports must be on the same network segment and must use the router configured and supplied by Murinova, to avoid network problems. The network configuration is set up by Murinova before delivery; do not change it.
Use shielded network cable. Category 5e or higher is recommended. The parts of the system are not interconnected by wireless networking.