Water quality / bio management
systemBasic function design document
Ver1.00

IndexFunctional overview......................................................................................................3
Water quality management...........................................................................................4
Water quality inspection function......................................................................................4
Soft water · hard water.................................................................................................................................4
Living organism under water..........................................................................................................................4
Bacterial decomposition activity......................................................................................................................4
Aquatic plants...............................................................................................................................................5

Bio management..........................................................................................................5
Breeding environment monitoring function........................................................................5
Snapshot function..........................................................................................................5
Living body size detection function...................................................................................5
Data browsing.............................................................................................................6
Data browsing function...................................................................................................6
Appendix.....................................................................................................................7

Functional overview
When breeding living organisms such as ﬁsh, crustaceans, shellﬁsh, etc., it is important to
conduct appropriate water quality and biological management.
Especially, it is very important to analyze the breeding environment such as water quality inorder to identify the causes such as illness, death, growth disorder, etc. of the living body.The
same thing can be said in water plants.Therefore, in this document, we believe that theexistence and development of a supportive system is essential to keep the breeding
environment in the best condition, and describe the basic functions necessary for developing
this system. In principle, it is a functional design assuming an artiﬁcial breeding environment
in freshwater, but aims to be ﬂexible and versatile speciﬁcations considering use andapplication in natural environment and sea water.
Purpose of system development
Understand changes in breeding environment.
Maintain health of living organisms and aquatic plants. Identify causes such as
disease, death, growth disorder.
It is possible to manage information on 1 to n water tanks or breeding environment, and allcollected information shall be managed in a centralized manner. The information accumulated
in the server can be viewed at any time by an information terminal such as a PC or asmartphone.

Fig.1 System overview

Water quality management
Water quality inspection function
In order to properly living bodies such as ﬁsh in water, it is of course necessary to manage
the quality of the water in the living environment of those living beings in an appropriate
state. In the following, components that represent water quality, which are considered to be
detectable from the viewpoint of growth of a living organism and aquatic plants, are listed.
The system shall have a function that can detect these components. Also, all the detected
data is stored in the server at regular intervals.
In addition, we think that it is desirable to grasp changes in the breeding environment assoon as possible and to detect and notify abnormalities so that measures can be taken.

Soft water · hard water
Generally, soft water is said to be more suitable for breeding of ﬁsh than hard water.
Therefore, it is assumed that minerals such as calcium and magnesium, which are containedin hard water in a large amount, can be detected.
CalciumMagnesium

Living organism under water
The following factors may be considered as factors that aﬀect the breeding of living bodies.
In order to carry out appropriate water quality control, the following components can bedetected.
PHWater temperature
OxygenChalk(chlorine)
Salinity

Bacterial decomposition activity
The main component of bodily waste such as ﬁsh is ammonia. It is a very hazardous
substance for living bodies in the breeding environment, but it is decomposed by bacteria in
the following order.
Ammonia → Nitrous Acid → Nitrate
Therefore, in order to grasp the activity status of bacteria, that is, the ﬁltration ability ofthe breeding environment, the contents of ammonia, nitrous acid and nitrate can bedetected.
Ammonia
Nitrous acid
NitrateAquatic plants
Nitrogen, phosphorus, potassium, etc. are required mainly for growth of plants including
water plants. Also, to promote photosynthesis, the amount of light irradiated to aquaticplants and the amount of carbon dioxide contained in water are very important. In thissystem, the following components can be detected.
Carbon dioxide
Light
PotassiumNitrogen
Phosphorus

Bio management
Functions considered necessary for bio management are described below.

Breeding environment monitoring function
In order to dynamically conﬁrm the situation and abnormality in the breeding environment,
the breeding environment can be monitored. Optionally, it is selectable to save monitoring
video.

Snapshot function
In order to grasp the situation of the breeding environment statically, it is assumed thatsnapshot images can be captured while checking the moving picture.

Living body size detection function
The size of the living body can be cited as one index representing the growth and featuresof the living body. In this system, it is assumed that the size of the living body can bemeasured.

Data browsing
The data mentioned in this chapter means the ingredient information stored by the water
quality test and images / movies saved by the biometrics management function.

Data browsing function
It is possible to check / browse data accumulated in the server and data acquired in realtime. Below, describe the image of the viewing screen.

Fig.2 Data browsing screenAppendix
The physical and logical conﬁguration of the client in the system are shown below.

Fig.3 Conﬁguration of the client in the system