Water-quality detection apparatus and water-quality detection method using the same

A water-quality detecting equipment, comprising:

• a detection chamber device having a detection chamber;
• a pump module configured to transport a to-be-tested liquid and a reagent to the detection chamber;
• a light source configured to emit a detection light to the detection chamber;
• a light sensor configured to sense the detection light traveling through the detection chamber and generate a detection voltage;
• and
• a controller electrically connected to the light sensor and the pump module, and configured to perform following procedures:
• a voltage sensing procedure, comprising reading a detection voltage value of the detection voltage from the light sensor;
• a dilution determination procedure, comprising:
• calculating a voltage ratio of the detection voltage value to a basic-voltage value, comparing the voltage ratio with a critical value, performing a concentration acquisition procedure when the voltage ratio is greater than the critical value, and performing a to-be-tested liquid dilution procedure when the voltage ratio is not greater than the critical value;
• wherein in the concentration acquisition procedure, a detection concentration value of the to-be-tested liquid is obtained according to a dilution rate and the detection voltage value;
• wherein In the to-be-tested liquid dilution procedure, the dilution rate is updated according to the voltage ratio, and the pump module is driven to transport a diluent by the controller, so that a ratio of a volume sum of a to-be-tested liquid volume of the to-be-tested liquid in the detection chamber and a diluent volume of the diluent to the to-be-tested liquid volume of the to-be-tested liquid is equal to the dilution rate, and the voltage sensing procedure and the dilution determination procedure are performed.