CN103015980B - A kind of infrasonic wave is launched and the producing fluid level instrument received and method thereof - Google Patents

Abstract

The invention discloses a dynamic liquid level meter with infrasonic wave transmitting and receiving functions for measuring the depth of the dynamic liquid level in an oil well. Infrasonic wave transmitting module of infrasonic wave, sound/electricity conversion module for converting infrasound wave into electrical signal, infrasound wave receiving module, liquid crystal display module connected with single-chip microcomputer module; one end of said electric/sound conversion module is connected with single-chip microcomputer module, and the other end It is connected with the infrasonic wave transmitting module; one end of the sound/electricity conversion module is connected with the single-chip microcomputer module, and the other end is connected with the infrasonic wave receiving module. The invention has the advantages that the frequency and energy of the infrasonic wave are controlled by the single-chip microcomputer technology, and the depth of the dynamic liquid surface within 3000 meters underground can be accurately measured.

Description

A dynamic liquid level instrument for transmitting and receiving infrasonic waves and its method

technical field

The invention mainly relates to the technical field of petroleum exploitation and the field of automation equipment, in particular to a dynamic liquid level instrument with infrasonic wave emitting and receiving functions and a method thereof.

Background technique

The dynamic liquid level is an important data commonly used in the dynamic analysis of oilfield development. In the process of oil production in the oilfield, it is urgent to accurately measure the liquid level height in the oil well, and then continuously monitor the oil well liquid level in real time to prevent well leakage and reduce energy consumption.

In the prior art, the method of testing the dynamic liquid level is bullet explosion echo measurement: that is, the bullet explosion is used to generate sound waves at the wellhead, and the sound waves encounter the liquid surface and reflect to the wellhead, and the liquid surface depth is calculated by recording the sound wave reflection time and speed. Although the bullet explosion echo measurement can realize the depth measurement of the moving liquid level in the oil well, it also has the following defects: the sound waves generated by the bullet explosion have a wide frequency band, including infrasonic waves, sound waves and ultrasonic waves. Divergence, serious energy dissipation, which brings troubles for accurate timing of receiving reflected echoes; using bullet explosions, each measurement needs to be exploded once, which increases production costs and causes certain pollution to the surrounding environment; using bullet explosions The high and low frequency sound waves generated are mixed, which brings great difficulties to the DSP filtering technology.

Contents of the invention

The object of the present invention is to provide a dynamic liquid level instrument with infrasonic wave transmitting and receiving functions and its method in view of the deficiencies in the prior art.

The technical solution of the present invention is: a dynamic liquid level instrument for transmitting and receiving infrasonic waves, which includes a single-chip microcomputer module, an electric/acoustic conversion module for converting electrical signals into infrasonic waves, an infrasonic wave transmitting module for transmitting infrasonic waves, and a A sound/electricity conversion module that converts infrasound waves into electrical signals, an infrasound wave receiving module, and a liquid crystal display module connected to the single-chip microcomputer module; one end of the electric/acoustic conversion module is connected to the single-chip computer module, and the other end is connected to the infrasound wave emission module; One end of the sound/electricity conversion module is connected with the single-chip microcomputer module, and the other end is connected with the subsonic wave receiving module.

The single-chip microcomputer module can be controlled by an internal program and emit the frequency of the infrasonic wave to realize frequency range; the single-chip microcomputer module can quickly analyze and calculate the emission time and reception time of infrasound waves.

The electric/acoustic conversion module can amplify the voltage signal, convert the voltage signal into a mechanical wave, and can amplify the power of the mechanical wave whose frequency is in the infrasonic range, so as to realize a stable sound pressure of 18 decibels.

The loudspeaker of the infrasound emission module adopts a ceramic loudspeaker.

The electrical/acoustic conversion module can convert the decibel number of the received infrasonic wave into a voltage signal, and realize decibel number filtering.

The sensor of the infrasonic wave receiving module adopts a high-precision infrasonic wave sensor, and the measurement range of the sound pressure is 5-30 decibels.

The liquid crystal display module can display the time when the infrasonic wave is emitted, the time when the reflected infrasonic wave is received, and the depth value of the moving liquid surface.

The effective effects of the present invention are: the present invention uses a single-chip microcomputer to control and emit 10-20 Hz infrasonic waves, which overcomes the problem that the wave packets are easy to diverge in the propagation process; Difficulties.

Description of drawings

Fig. 1 is a schematic circuit structure diagram of a dynamic liquid level instrument with infrasonic wave transmitting and receiving functions according to the present invention.

Fig. 2 is a flow chart of the implementation method of the dynamic liquid level instrument of the present invention.

In the figure, 1—single chip microcomputer module; 2—first electric/acoustic conversion module; 3—infrasonic wave transmitting module; 4—second sound/electrical converting module; 5—infrasonic wave receiving module.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1, a dynamic liquid level instrument for transmitting and receiving infrasonic waves includes a single-chip microcomputer module 1, a first electric/acoustic conversion module 2 for converting electrical signals into infrasonic waves, and an infrasonic wave transmitting module for transmitting infrasonic waves 3. The second sound/electricity conversion module 4, the infrasound wave receiving module 5, and the liquid crystal display module 6 connected with the single-chip microcomputer module 1 are used to convert the infrasonic wave into an electric signal; one end of the first electric/acoustic conversion module 2 is connected to the single-chip microcomputer The module 1 is connected, and the other end is connected with the infrasonic wave transmitting module 3; one end of the second sound/electricity conversion module 4 is connected with the single-chip microcomputer module 1, and the other end is connected with the infrasonic wave receiving module 5 .

The single-chip microcomputer module 1 can be controlled by an internal program and transmit the frequency of the infrasonic wave to realize frequency range; the single-chip microcomputer module 1 can quickly analyze and calculate the emission time and reception time of infrasonic waves;

The first electrical/acoustic conversion module 2 can amplify voltage signals, convert voltage signals into mechanical waves, and amplify the power of mechanical waves with a frequency in the infrasonic range to achieve a stable sound pressure of 18 decibels.

The speaker of the infrasound emitting module 3 is a ceramic speaker.

The second electrical/acoustic conversion module 4 is capable of converting the received infrasound decibels into voltage signals and implementing decibel filtering.

The sensor of the infrasonic wave receiving module 5 adopts a high-precision infrasonic wave sensor, and the measurement range of the sound pressure is 5-30 decibels.

The liquid crystal display module 6 can display the time when the infrasonic wave is emitted, the time when the reflected infrasonic wave is received, and the depth value of the moving liquid surface.

As shown in FIG. 2 , the flow chart of the implementation method of the dynamic liquid level instrument of the present invention. The steps for implementing the measurement of the depth of the dynamic liquid surface will be described in detail below.

Step 1: Controlled by the program inside the single-chip microcomputer module 1 and send out a rectangular square wave with a voltage of 5V and a frequency of 15Hz, the rectangular square wave is converted into an infrasonic wave with a sound pressure decibel of 18 through the electric/acoustic conversion module 2, and then transmitted through the infrasonic wave Module 3 uses a ceramic speaker to direct infrasonic waves at the oil well.

Step 2: Due to the low frequency of infrasonic waves and low energy dissipation, most of the infrasonic waves propagate downward until they encounter the liquid surface in the oil well; the infrasonic waves propagate downward until they encounter the liquid surface in the oil well, and then emit infrasonic waves through the liquid surface , the infrasonic wave propagates upwards from the oil well; the reflected infrasonic wave is received by the infrasonic wave receiving module 5, and enters the single-chip microcomputer module 1 through the sound/electric conversion module 4.

Step 3: MCU module 1 according to the moment when the infrasonic wave is emitted and the moment when the reflected infrasound is received , to calculate the travel time of the infrasound .

Step 4: MCU module 1 uses wave speed when traveling with infrasound , calculate the depth of the fluid surface .

Step 5: Calculate the depth value of the dynamic fluid surface Displayed on the liquid crystal display module 6.

Claims (6)

1. the producing fluid level instrument that an infrasonic wave is launched and received, it is characterised in that: it includes one-chip computer module (1), electro acoustic modular converter (2), infrasonic wave transmitter module (3), sound/electricity modular converter (4), infrasonic wave receiver module (5) and LCD MODULE (6); Electro acoustic modular converter (2) converts electrical signals to infrasonic wave, and infrasonic wave transmitter module (3) launches infrasonic wave, and infrasonic wave is converted to the signal of telecommunication by sound/electricity modular converter (4), and infrasonic wave receiver module (5) receives infrasonic wave; Described LCD MODULE (6) is connected with one-chip computer module (1); Described electro acoustic modular converter (2) one end is connected with one-chip computer module (1), and the other end is connected with infrasonic wave transmitter module (3); Described sound/electricity modular converter (4) one end is connected with one-chip computer module (1), and the other end is connected with infrasonic wave receiver module (5); The internal processes of described one-chip computer module (1) controls electro acoustic modular converter (2) and launches infrasonic frequency, and frequency range is; The sensor of described infrasonic wave receiver module (5) adopts high accuracy infrasonic sensor, and the measurement of acoustic pressure is ranged for 5-30 decibel.

2. a kind of infrasonic wave according to claim 1 transmitting and the producing fluid level instrument received, it is characterised in that: the internal processes analysis of described one-chip computer module (1) and calculating infrasonic launch time and the time of reception.

3. a kind of infrasonic wave according to claim 1 is launched and the producing fluid level instrument received, it is characterized in that: the amplification of voltage signal, voltage signal are converted to mechanical wave by described electro acoustic modular converter (2), it is the stable acoustic pressure of 18 decibels that frequency is amplified at the power of the mechanical wave of infrasonic wave scope.

4. a kind of infrasonic wave according to claim 1 is launched and the producing fluid level instrument received, it is characterised in that: the speaker of described infrasonic wave transmitter module (3) adopts ceramic loudspeaker.

5. a kind of infrasonic wave according to claim 1 is launched and the producing fluid level instrument received, it is characterised in that: the infrasonic wave decibels received is converted to voltage signal, and carries out decibels filtering by described sound/electricity modular converter (4).

6. implement a kind of infrasonic wave described in claim 1 to launch and the method for the producing fluid level instrument received, it is characterised in that: concretely comprise the following steps:

Step one: the programme-control internal by one-chip computer module (1) also sends voltage to be 5V, frequency be the rectangle square wave of 15Hz, rectangle square wave is converted into, through electro acoustic modular converter (2), the infrasonic wave that acoustic pressure decibels is 18, is then passed through infrasonic wave transmitter module (3) and launches infrasonic wave facing to oil well;

Step 2: infrasonic wave travel downward, until the liquid level that runs in oil well, is then passed through liquid level and launches infrasonic wave, and infrasonic wave is upwardly propagated by oil well; The infrasonic wave reflected is received by infrasonic wave receiver module (5), and enters one-chip computer module (1) through sound/electricity modular converter (4);

Step 3: one-chip computer module (1) is according to launching infrasonic momentInfrasonic moment is reflected with receiving, calculate infrasonic whilst on tour;

Step 4: one-chip computer module (1) utilizes velocity of waveWith infrasonic wave whilst on tour, calculate the degree of depth of producing fluid level;

Step 5: by the depth value of calculated producing fluid levelLCD MODULE (6) shows.