Aquaculture ultrasonic water level detection method and device with fault self-diagnosis function

Abstract

The invention discloses an aquaculture ultrasonic water level detection method and device with a fault self-diagnosis function in the field of aquaculture and detection. The method comprises the steps: enabling an ultrasonic probe to transmit a distance measurement sound wave, calculating a water level depth h, enabling a steering engine to rotate clockwise by a fixed angle 90 degrees, enabling ametal detection plate to rotate to the position below the ultrasonic probe, and shielding a measurement path of the ultrasonic probe; enabling the ultrasonic probe to send a measurement signal, measuring a measurement distance d from the ultrasonic probe to the metal detection plate, comparing the measurement distance d with an actual vertical distance L between the ultrasonic probe and the metaldetection plate, judging whether a difference value is in a set error range or not, and if the difference value exceeds the error range, determining that distance measurement fails; and if the error range is not exceeded, determining that the water level depth h is accurate water level data. According to the invention, the fault self-diagnosis function of ultrasonic water level detection is realized, the accuracy of each time of distance measurement is ensured, and a phenomenon that a large number of aquatic products die due to a fact that a liquid level detection value is not changed becauseof crash of the detection device is avoided.

Description

technical field [0001] The invention relates to the field of aquaculture and detection, in particular to a device and a method for detecting the water level of an aquaculture pond by using ultrasonic technology. Background technique [0002] In the process of aquaculture, real-time monitoring of the water level of the aquaculture pond is very important. The water level of the aquaculture pond affects the temperature of each area at the bottom of the water. In an automated aquaculture environment, the failure of the water level detection will lead to unreasonable water levels and reduce the output of various aquatic products. In a more serious situation, once the water level detection equipment fails, the measured water level is completely wrong and the entire system goes wrong. If the water level control is too low, the pool will be emptied, resulting in the death of a large area of ​​aquatic products, resulting in irreparable losses. [0003] The existing aquaculture water...

AI Technical Summary

Problems solved by technology

If the measured water level is far lower than the actual water level, the automatic breeding system will continue to add water to the breeding pond. If the water level is too high, it will overflow the breeding pond, and a large amount of aquatic products will be lost.

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