Jiangsu University

Huitao Zhou

Weidong Jia

Mingxiong Ou

Shuai Yang

Ming Wang

Chen Gong

Shiqun Dai

Shuai Zang

Minmin Wu

Chuan Zhang

The present invention relates to a method for detecting a thickness of a tree canopy based on an ultrasonic echo signal, and belongs to the technical field of agricultural machinery information sensing and detection. The present invention analyzes and discriminates a first effective peak and a last effective peak of the ultrasonic echo signal, obtains a first effective peak time and a last effective peak time, and calculates the thickness of the tree canopy according to a provided calculation formula, thus realizing the direct detection of the thickness of the tree canopy. This method has characteristics such as a high accuracy and a wide application range, and is applicable to the field of detection of the thickness of a tree canopy in industries such as agricultural machinery and forestry machinery.

Method for detecting thickness of tree canopy based on ultrasonic echo signal

A gas-liquid two-phase flow atomizing nozzle includes a nozzle core, an outer sleeve, and an atomizing body. An inner cavity of the nozzle core consists of an inlet tapered section, a jet flow section, and an outlet diffusion section. The outlet diffusion section of the nozzle core is connected to an atomizing body mixing chamber. The jet flow section of the nozzle core is in communication with external atmosphere through a core air inlet hole, an air inlet buffering chamber, and a sleeve air inlet hole.

Gas-liquid two-phase flow atomizing nozzle

The present disclosure discloses a system for measuring a charge-to-mass ratio of an electrostatic atomization nozzle and a measurement method using the same. The system includes an electrostatic atomization nozzle, an upper cylinder, a lower cylinder, an ammeter, a liquid level tube, an ultrasonic level meter, a water storage tank, and a liquid pump. The electrostatic atomization nozzle, the upper cylinder, and the lower cylinder are sequentially connected from top to bottom. The ammeter is connected to the lower-cylinder flange. The liquid level tube is communicated with the lower cylinder. The ultrasonic level meter is mounted on an upper end of the liquid level tube. The water storage tank is located below a lower-cylinder water outlet pipe. The liquid pump can deliver a liquid in the water storage tank to the electrostatic atomization nozzle. Measurement data of the ammeter is acquired and processed by a computer in real time.

System for measuring charge-to-mass ratio of electrostatic atomization nozzle and measurement method using the same

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Jiangsu, China

Huitao Zhou