Tracking and measuring system for water level in pipeline

Abstract

The invention discloses a system for tracking and measuring a water level in a pipeline, belonging to the technical field of hydrographic survey. According to the invention, a liquid level detector is utilized to replace an existing detection devices for liquid levels in pipelines, avoids winding and knotting between the detection devices and ropes, can avoid interference of obstacles in pipelines, and is hardly affected by environment, high in measurement precision and long in service life. The system comprises: a transmission rope, wherein the tail end of the transmission rope is connected with the liquid level detector; a driving wheel, wherein the front end of the transmission rope is fixedly connected with the driving wheel, the driving wheel is further connected with a power source, and the driving wheel can drive the liquid level detector to operate through the transmission rope according to a set program; a driven wheel, which is used for metering the movement distance of the transmission rope and is synchronously connected with an angular displacement sensor through a transmission mechanism, wherein the transmission rope winds the driven wheel; and a control system, wherein the liquid level detector, the power source and the angular displacement sensor are connected with the control system, and the control system can obtain position information of the liquid level detector and measurement data of the angular displacement sensor and output a power source control signal to control the liquid level detector to conduct automatic monitoring according to a set automatic program.

Description

technical field [0001] The invention belongs to the technical field of hydrological measurement, and in particular relates to a water level tracking and measuring system in a pipeline. Background technique [0002] There are various water level monitoring equipment in pipelines, but the differences mainly focus on sensors and collection methods. Data transmission and storage are basically the same. At present, the water level collection devices widely used in China are divided into pressure type and float type. Below the water surface, the float type floats on the water surface. [0003] The inventor believes that the working principle of the float sensor is that the float changes with the water level in the vertical direction, and then the taxi wheel of the water level gauge is driven by the rope to rotate, and finally the position change of the taxi wheel is converted into a measuring instrument for water level. The disadvantage is that the float The steel rope with the w...

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Problems solved by technology

[0004] The inventor believes that the working principle of the pressure type liquid level sensor is to convert the water pressure into an electrical signal through the pressure sensing unit placed underwater, and then calculate the water level through the conversion relationship between the electrical signal and the water depth. The disadvantage is that it is affected by sediment, temperature, etc. Environmental factors such as environmental factors are greatly affected, and there are phenomena such as temperature, time, and nonlinear drift. Regular calibration and calibration are required during use, and the long-term observation accuracy is poor; the sensor needs to use conductive cables to transmit signals, which is vulnerable to electromagnetic interference and lightning strikes. The working reliability is poor; the sensor is installed on the bottom of the water, and it is difficult to maintain the equipment; from the practical application point of view, the sensor is placed in the water for a long time, and the service life is short

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