Automatic water quality surveillance apparatus

An automatic water quality surveillance apparatus, comprising:

• a water tank for fish always and continuously receiving raw water so as to rear a plurality of cyprinodonts therein, the raw water including:
• river flowing water;
• lake water;
• and ground water;
• and
• a CCD video camera photographing abnormal behavior when the raw water contains toxic substances therein, the abnormal behavior including:
• a first case where the plurality of cyprinodonts form a fixed group that does not move;
• a second case where the plurality of cyprinodonts take at least one of repelling action and madly-rushing action;
• and
• a third case where the plurality of cyprinodonts die,
• wherein:
• the automatic water quality surveillance apparatus performs digital conversion on image signals from the CCD video camera, and judges an abnormality according to image processing to automatically output an alarm;
• the automatic water quality surveillance apparatus further comprising:
• an odor-sensing water tank through which the raw water circulates;
• an odor sensor sensing a mold odor of the odor-sensing water tank;
• and
• a heater warming the raw water circulating within the odor-sensing water tank;
• the odor sensor includes:
• an odor sensor sensing element;
• and an odor sensor control unit;
• the odor sensor sensing element and the odor sensor control unit are separately arranged and are connected to each other by means of a cable;
• the odor sensor sensing element is arranged within the odor-sensing water tank;
• the odor sensor control unit includes:
• a sensitivity-adjusting variable resistor adjusting an odor sensitivity;
• and
• a sensitivity range-adjusting knob;
• the automatic water quality surveillance apparatus further comprising:
• an LED display displaying a level of odor concentration that the odor sensor sensing element is sensing;
• and
• a concentration LED bar numerically displaying the odor concentration;
• the odor-sensing water tank is isolated from open air except an inlet and outlet of the raw water, and signals from the odor sensor sensing element are controlled by means of a microcomputer implemented within the odor sensor control unit via the cable;
• the microcomputer is configured for:
• generating a conversion program for displaying sensing data sensed by the odor sensor sensing element on the LED display;
• and
• making the concentration LED bar perform display according to the concentration obtained by stepped processing operation on the sensing data using the sensitivity-adjusting variable resistor of a rotary type;
• the odor-sensing water tank is provided in a channel at a side of the water tank for fish receiving the raw water toward the water tank for fish that rears the fish;
• a semiconductor sensor measuring a change of electric resistance caused by chemical absorption of reducible gas existing on a surface of a metal oxide semiconductor is utilized as the odor sensor sensing element;
• and
• the odor sensor control unit is juxtaposed to the display panel of the automatic water quality surveillance apparatus.