Method and device for automatically measuring ascending/descending one-way movement of water level

Abstract

The invention provides a method for automatically measuring the ascending / descending one-way movement of a water level, comprising the following steps: putting a floater into an observation well; arranging a floater ascending / descending control device, a pulse signal generator and a pulse signal recorder at the mouth of the well ,wherein when the water level changes, a measuring wheel of an ascending / descending device is driven to rotate along with the ascending and the descending of the floater, a magnet arranged on the circumference of the measuring wheel sequentially passes by an electromagnetic switch of the pulse signal generator when rotating so that the switch of the pulse signal generator finishes the actuation action to generate a signal which is conducted to the pulse signal recorder; and finally obtaining the amplitude of fluctuation of the water level through the signal generated by the magnet passing by the electromagnetic switch when the measuring wheel rotates. The invention also discloses a system for measuring the ascending / descending one-way movement of a water level, which has simple structure and convenient running management and prevents the influence from theair temperature and the atmosphere pressure; meanwhile, by adopting the pulse signal generator and the pulse signal recorder, the dynamically changed information on the water level is converted into an electric signal which is stored in an electronic chip, thereby realizing the paperless record of data.

Description

technical field [0001] The invention relates to an automatic measurement method and device for one-way movement of rising / falling water level, which is mainly used for studying the dynamic changes of surface water and underground water level in mountains or plains, and belongs to the technical field of small hydrological data measuring equipment. Background technique [0002] As an important means of water resources management, water level dynamic change monitoring has always been valued by water conservancy workers. At present, the devices used to automatically measure the dynamic change of water level mainly include float type water level gauge, pressure sensor type water level gauge, ultrasonic water level gauge, etc., among which pressure sensor type water level gauge and ultrasonic type water level gauge are relatively advanced and perfect in data recording. , but the sensor is greatly affected by environmental factors such as temperature and atmospheric pressure, and i...

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Problems solved by technology

At present, the devices used to automatically measure the dynamic change of water level mainly include float type water level gauge, pressure sensor type water level gauge, ultrasonic water level gauge, etc., among which pressure sensor type water level gauge and ultrasonic type water level gauge are relatively advanced and perfect in data recording. , but the sensor is greatly affected by environmental factors such as temperature and atmospheric pressure, and its stability is generally poor. It has always been one of the efforts to continuously improve and perfect this type of instrument. It is still high, and it is still difficult to promote at present; the float type water level gauge is generally composed of a float sensor, a transmission device and a recording device. Compared with the pressure sensor, the float sensor is less affected by environmental factors such as air temperature and atmospheric pressure, but the transmission and recording device At present, most of them are still in the mechanical clock type with paper recording mode, the mechanical processing is complicated, and the running resistance is large; in recent years, with the rapid development of the electronic information industry, especially the development of photoelectric technology, the emergence and application of photoelectric encoders have realized the float The paperless recording mode of the type water level gauge, but there are still many problems with the photoelectric encoder type float type water level gauge. First, the transmitting device or the receiving device is easy to cause displacement or offset due to mechanical vibration and other reasons, resulting in the unreliable operation of the receiving device. Optical signals are received, but electrical signals cannot be generated. Secondly, in an environment with high temperature and high humidity, it is easy to cause changes or damage to the characteristics of electronic components inside the photoelectric detection device. Third, the electromagnetic in the environment is likely to interfere with the photoelectric detection device, resulting in The output waveform of the photoelectric detection device is distorted and distorted

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