Sludge-concentration monitoring system based on cloud platform

Abstract

The invention discloses a sludge-concentration monitoring system based on a cloud platform. The sludge-concentration monitoring system comprises a sludge-concentration detecting device and a monitoring center connected with the sludge-concentration detecting device, wherein the sludge-concentration detecting device comprises an ultrasonic sensor, a power amplifying circuit, an ultrasonic transducer, an analog-digital conversion unit, a microcontroller module, a data storage unit, a display unit, an alarming unit and a communication unit which are connected in sequence; the data storage unit, the display unit, the alarming unit and the communication unit are connected with the microcontroller module; the ultrasonic sensor comprises an ultrasonic transmitting circuit and an ultrasonic receiving circuit; the microcontroller module comprises a calculation unit, a parameter comparison unit and a control unit; the ultrasonic transmitting circuit comprises an oscillator, a constant-current transmitting circuit and an ultrasonic transmitting probe which are connected in sequence; the ultrasonic receiving circuit comprises an ultrasonic wave receiving head, an amplifying circuit and a waveshaping circuit which are connected in sequence. The sludge-concentration monitoring system disclosed by the invention has the beneficial effect that the sludge concentration can be accurately monitored.

Description

technical field [0001] The invention belongs to the field of automatic detection, and in particular relates to a sludge concentration monitoring system based on a cloud platform. Background technique [0002] Suspension concentration is an important process control parameter in the operation of water supply plants and sewage plants. The traditional artificial sampling chemical drying analysis method has low efficiency and long measurement cycle, and it is difficult to play a role in process control. To this end, people have developed sludge concentration measuring instruments based on optical methods, ray methods, vibration methods, and ultrasonic methods. Especially, ultrasonic attenuation method sludge concentration measuring instruments are widely used in the field of sewage treatment. Due to the large changes in environmental conditions in practical applications and the wide range of temperature changes in the measured sludge, it is difficult for the existing sludge con...

AI Technical Summary

Problems solved by technology

But a key factor is that temperature has a great influence on the speed of sound, which will directly affect the measurement accuracy of liquid concentration

In order to overcome the influence of temperature on the measurement accuracy, the method of directly comparing the data at different temperatures is often used to reduce the measurement error. However, this method not only has a large amount of data storage, the calculation process is complicated, and it is impossible to establish the relationship between sound velocity and temperature. Corresponding relationship, the external interference is often misdetected and cannot be ruled out

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