System configuration diagram

  • Monitorial fish in a monitoring tank are captured by a CCD camera, and those images are transferred to an image processing unit.
  • Captured images are distributed into 4 phases within image processing unit, and each is analyzed in order (block image processing).
  • The analyzed images are displayed on the LCD monitor, and when the movement of monitorial fish is detected, it is indicated by '□: square diagram' (only when setting condition is cleared.) The detection area is divided into 56 on the screen.
  • An alarm is issued depending on the amount of monitorial fish's activity.
  • Sample water would be kept in a container when "Abnormality" occur. ・Signals are output from the peripheral control unit for "Leakage" / "Low water level" / "Light off" detections.

System flow

Since monitorial fish are frightened right after being released into monitoring tank, they may not be active and cause a false alarm. To prevent the false alarm, some monitoring start conditions were set up.

The figure explains:
Water quality monitoring will start in following conditions in a row 1. “Standby switch” in the peripheral control unit is on;2. front door is closed; 3. behavior counter or behavior timer (related to the behavior of monitorial fish) reached at setting value.

Monitoring operation would be suspended when "Door open", "Water leakage", "Low level water", or "Light off" signals were detected.

Monitoring flow

Normal Specifications

Product name Fish Monitor
Model name FishGym Model/NBA-03
Form Indoor Use Only, Stand-alone
Dimensions 700(W) x 1800(H) x 700(D)mm
Weight Approximately 145kg
Power supply voltage AC100V (50k/60Hz)
Power consumption Maximum 1300W (with heater)
Ambience Temperature : 0-40 Celsius degrees, Humidity : 30-85%RH
Monitoring method CCD camera (bird's-eye view)
Detection system Block image processing system.Screen divided into 56 (8x7) blocks,
each block conteins 64 (8x8) dots.
Detection method Continuous automatic monitoring.
Monitorial fish 20 individuals of
 Fathead minnow (pimephales promelas)
 Zebrafish (brachydanio rerio)
 Japanease medaka (oryzias latipes)

Length of fish should be 20 to 30mm
Raw water supply 0.8-1.5 liters/minute
Raw water permeability All fish in the breeding tank must always be visible.
Wiring ports 34φ x 2
Piping ports Water inlet :13φ elbow
Drainage outlet : 20φ elbow
External outputs Alarm outputs : 9 (N/O dry contact)
Data communication output : 1 (Ethernet)
Image outputs : 3 (NTSC)
Automatic water sampling function A solenoid valve opens to pour a water sample into a container when the "Abnormality" alarms issued (Max 5liter/timer setup)
Heaters Thermostats x 2
300WCeramic heater x 4
Power supply voltage : AC100V (50/60Hz)
Power consumption : 1200W max

❇12A or more power supply is required for the heater, separate from the controls.

Equipment configuration

Equipment Use & Details
Power supply breaker x 2 2P 15A 30mA
Color LCD monitor x 1 More than 15 inchs wide
Door sensor x 1 Push button switch
Image proessing unit x 1 Block image processing system
Peripheral controller x 1 -
Heater protection unit x 1 -
Display panel x 1 Normal, Caution 1, Caution 2, Caution 3, Abnormality, Leakage, Low water level, Light off, Water temprature display, Door open
Electronic components x 1 set PLC, Relay, etc
CCD camera x 1 1/3' 410,000 pixels, color
Fluorescent light x 1 6W fluorescence tube
Automatic feeder x 1 1-5 time(s) of feed / day
Ventilating fan x 2 -
Water level sensor x 1 Magnetic float switch
Temperature sensor x 1 Pt100
Water leakage sensor x 1 -
Aeration unit x 1 Air pump, pumice
Submersible pump x 1 -
Monitoring tank x 1 390(W) x 260(H) x 460(D)
Water duty : 9.5 liters (Flow-thourgh)
Test fish x 20 Adult fish, body length : 20mm or more
Capture net x 1 -
Solenoid valve x 1 -
Water sampling container x 1 5 liters
Standard spare parts 1 kit