CN111610525A - Automatic pipeline distribution detection system and method based on acoustic transmission - Google Patents

Abstract

The invention discloses an automatic pipeline distribution detection system and method based on sound wave transmission, wherein the system comprises transmitters and receivers, the transmitters are arranged in pipeline ports and used for generating sound waves and transmitting the sound waves in the pipeline ports, the receivers are arranged on the ground, at least three receivers are arranged on the ground, at least one receiver is not collinear with any other two receivers, the receivers are used for receiving the sound waves and determining the position of a pipeline according to the transmission direction and strength of the sound waves to generate a distribution diagram of the pipeline, and the receivers are also used for determining the positions of leaking points of the pipeline according to the strength of the sound waves.

Description

Automatic pipeline distribution detection system and method based on acoustic transmission

technical field

The invention belongs to the field of automatic pipeline distribution detection based on sound wave transmission, and in particular relates to an automatic pipeline distribution detection system and method based on sound wave transmission.

Background technique

At present, the indoor piping diagrams of many old houses are lost, and the specific location of the pipes is difficult to determine. At the same time, the pipes are in disrepair for a long time, and leaks are prone to problems. It is not easy to find the leaks during application, resulting in liquid leakage in the pipes and a waste of resources. Therefore, in order to detect leaks, first determine the specific location of the indoor pipeline, and then specifically detect the location of the leak in the pipeline. The current method for detecting the position of the pipeline includes the method of transmitting and receiving high-frequency pulsed electromagnetic waves, but the method is complicated in equipment and improper operation leads to inaccurate detection.

There are three existing leak detection methods, namely, the in-pipe detection method, which realizes leak detection and positioning by detecting the integrity of the pipe wall, the out-pipe detection method, which realizes leak detection and positioning by directly detecting the existence of leaking substances, and the detection method by detecting pipeline leakage. The change in the flow state in the pipe then enables leak detection and localization.

Among the three existing methods, the first and second methods are expensive and do not have real-time detection capabilities except for the distributed fiber-based method; the third method, the most commonly used method based on negative pressure waves, has small leakage And slow leakage sensitivity and positioning accuracy are poor, overcome the shortcomings of poor disturbance ability of the operating station and high false alarm rate.

SUMMARY OF THE INVENTION

In view of this, the main purpose of the present invention is to provide an automatic pipeline distribution detection system and method based on acoustic wave transmission.

In order to achieve the above object, the technical scheme of the present invention is achieved in this way:

An embodiment of the present invention provides an automatic pipeline distribution detection system based on sound wave transmission, including a transmitter and a receiver, the transmitter is arranged in a pipeline port to generate sound waves and propagate in the pipeline port, and the receiver is on the ground Set at least three receivers and at least one receiver is not collinear with any other two receivers, used to receive sound waves and determine the position of the pipeline according to the direction and intensity of sound wave propagation to generate a distribution map of the pipeline, and also used to generate a distribution map of the pipeline according to the intensity of the sound wave Determine the location of the leak in the pipeline.

In the above scheme, the transmitter includes a transmitter power supply, a high-power vibrator acoustic wave transmitter, a power amplifier, and an MCU signal generator, and the transmitter power supply is respectively connected with the high-power vibrator acoustic wave transmitter, power amplifier, and MCU signal generator. For supplying power, the MCU signal generator is connected to a high-power vibrator acoustic wave transmitter via a power amplifier, and the high-power vibrator acoustic wave transmitter is connected to a pipe port for propagating the generated acoustic waves.

In the above scheme, the receiver includes a receiver power supply, a control terminal, an Internet of Things module, a ZigBee network module terminal, an acoustic wave amplifier, a digital filter converter, a display, a filter, a pre-acoustic wave amplifier, and a pickup, and the pickup passes through the geological To receive the sound wave propagated by the pipeline port, the pickup is connected to a sound wave amplifier, a filter, a sound wave amplifier, and a digital filter converter in turn. The module terminal is connected with the control terminal through the Internet of Things module; the receiver power supply is respectively connected with the pickup, the display, and the ZigBee network module terminal for power supply.

The embodiment of the present invention also provides an automatic pipeline distribution detection method based on sound wave transmission. The transmitter generates sound waves and propagates through the pipeline, and at least three receivers receive the sound waves propagating through the pipeline through the geology and determine the direction and intensity of the sound wave propagation. The location generates a distribution map of the pipeline, and according to the distribution map of the pipeline, finds a location that is significantly higher than the surrounding sound wave intensity, and the location is the location of the leak point of the pipeline.

In the above solution, the transmitter generates sound waves and propagates through the pipeline. Specifically, the MCU signal generator generates an electrical signal with adjustable frequency and amplitude, and then amplifies the electrical signal through a power amplifier, and the high-power vibrator emits sound waves. The amplifier converts the amplified electrical signal into sound waves.

In the above solution, the at least three receivers receive the sound waves propagated by the pipeline through the geology and determine the position of the pipeline according to the direction and intensity of the sound wave propagation to generate the distribution map of the pipeline, specifically: the sound wave is transmitted to the geology through the pipeline, and the pickup receives the sound wave. The sound wave that propagates to the geology, the sound wave is amplified by the pre-sound wave amplifier, filtered by the filter, and the sound wave amplifier continues to amplify the sound wave after filtering, and then the analog-to-digital conversion is performed by the digital filter converter to display on the display, and the ZigBee network module terminal receives the digital filter. The sound wave converted by the converter determines the position of the pipeline according to its own positioning module, the direction and intensity of sound wave propagation, and finally generates the distribution map of the pipeline.

In the above solution, according to the distribution map of the pipeline, find a position that is significantly higher than the intensity of the surrounding sound waves, and this position is the leak point position of the pipeline, specifically: find the peak signal in the distribution map of the pipeline, the The peak signal corresponding to the pipeline position is to determine the leakage point position of the pipeline.

Compared with the prior art, the invention can transmit and receive sound waves, and determine the specific positions of pipes and leaks according to the orientation and intensity of the received sound waves, so as to automatically draw a pipe distribution map and avoid detection of damage to indoor ground.

Description of drawings

1 provides a block diagram of a connection of a transmitter in an automated pipeline distribution detection system based on acoustic wave transmission according to an embodiment of the present invention;

FIG. 2 provides a connection block diagram of a receiver in an automated pipeline distribution detection system based on acoustic wave transmission according to an embodiment of the present invention;

FIG. 3 is a flow chart of an automatic pipeline distribution detection method based on acoustic wave transmission further provided by an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

The embodiment of the present invention provides an automatic pipeline distribution detection system based on sound wave transmission, as shown in Figures 1 and 2, comprising a transmitter 1 and a receiver 2, the transmitter 1 is arranged in the pipeline port 13 to generate sound waves and Propagating in the pipe port 13, at least three receivers 2 are arranged on the ground and at least one receiver 2 is not collinear with any other two receivers 2, which are used to receive sound waves and are determined according to the direction and intensity of sound wave propagation The location of the pipeline generates a distribution map of the pipeline, and is also used to determine the location of the leak point of the pipeline according to the intensity of the sound waves.

The transmitter 1 includes a transmitter power supply 11, a high-power vibrator acoustic wave transmitter 12, a power amplifier 14, and an MCU signal generator 15. The transmitter power supply 11 is respectively connected to the high-power vibrator acoustic wave transmitter 12, the power amplifier 14, and the MCU. The signal generator 15 is connected to provide power, the MCU signal generator 15 is connected to the high-power vibrator acoustic wave transmitter 12 via the power amplifier 14, and the high-power vibrator acoustic wave transmitter 12 is connected to the pipeline port 13 for propagating the generated sound waves.

The transmitter power supply 11 is a DC 24V power supply.

The receiver 2 includes a receiver power supply 202, a control terminal 203, an IoT module 204, a ZigBee network module terminal 205, an acoustic wave amplifier 206, a digital filter converter 207, a display 208, a filter 209, a pre-acoustic wave amplifier 210, and a pickup. 211, the pickup 211 receives the sound wave propagated by the pipeline port 13 through the geology 201, and the pickup 211 is sequentially connected to the acoustic wave amplifier 210, the filter 209, the acoustic wave amplifier 206, and the digital filter converter 207, and the digital filter converter 207 has one channel. It is connected with the ZigBee network module terminal 205, and the other way is connected with the display 208. The ZigBee network module terminal 205 is connected with the control terminal 203 through the Internet of Things module 204; the receiver power supply 202 is respectively connected with the pickup 211, the display 208 and the ZigBee network module. Terminal 205 is connected for power supply.

The receiver power supply 202 is a DC 24V power supply.

The ZigBee network module terminal 205 has its own positioning module.

The sound wave is transmitted to the geology 201 through the pipeline. The pickup 211 receives the sound wave propagated by the geology 201. The sound wave is amplified by the pre-acoustic wave amplifier 210, filtered by the filter 209, and the acoustic wave is continuously amplified by the acoustic wave amplifier 206. Displayed on the display 208, the ZigBee network module terminal 205 receives the sound wave of the digital filter 207, and determines the position of the pipeline according to its own positioning module, the direction and intensity of sound wave propagation, and the ZigBee network module terminal 205 passes the analysis result through the Internet of Things module. 204 and the software display terminal 203 are transmitted to the control terminal, and the control terminal performs line initialization, display, data processing and distribution map generation for the incoming results, and the distribution map of the pipeline is displayed. Since the sound wave intensity at the leak point is blocked and increased. If the distribution map is large, the corresponding position of the distribution map is different from the surrounding, and a peak signal is generated to determine the location of the leak point.

The embodiment of the present invention also provides an automatic pipeline distribution detection method based on acoustic wave transmission, and the method is realized by the following steps:

Step 101: Transmitter 1 generates sound waves and propagates through the pipeline;

Specifically, the MCU signal generator generates an electrical signal with adjustable frequency and amplitude, and then the electrical signal is amplified by the power amplifier 14, and the high-power oscillator acoustic wave transmitter 12 converts the amplified electrical signal into sound waves.

Step 102: at least three receivers 2 receive the sound waves propagated by the pipeline through the geology and determine the position of the pipeline according to the direction and intensity of the sound wave propagation to generate a distribution map of the pipeline;

Specifically, the sound wave is transmitted to the geology 201 through the pipeline, the pickup 211 receives the sound wave propagated by the geology 201, the sound wave is amplified by the pre-acoustic amplifier 210, filtered by the filter 209, and filtered by the acoustic amplifier 206. The filter converter 207 performs analog-to-digital conversion and is displayed on the display 208, and the ZigBee network module terminal 205 receives the sound wave converted by the digital filter converter 207, determines the position of the pipeline according to its own positioning module, the direction and intensity of sound wave propagation, and finally generates Distribution map of the pipeline.

Step 103 : according to the distribution map of the pipeline, find a position that is significantly higher than the sound wave intensity of the surrounding area, and the position is the leak point position of the pipeline.

Specifically, since the sound wave intensity at the leak point increases due to obstruction, the sound wave intensity is obviously different from the surrounding area. Therefore, a peak signal is searched in the distribution diagram of the pipeline, and the position of the pipeline corresponding to the peak signal is to determine the leak point position of the pipeline.

The above descriptions are merely preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (7)

1. an automatic pipeline distribution detection system based on sound wave transmission, is characterized in that, comprises transmitter, receiver, described transmitter is arranged in pipeline port for generating sound wave and propagates in pipeline port, and described receiver is in the pipeline port. There are at least three receivers on the ground, and at least one receiver is not collinear with any other two receivers. It is used to receive sound waves and determine the position of the pipeline according to the direction and intensity of sound wave propagation to generate a distribution map of the pipeline. Strength determines the location of leaks in pipes. 2. the automatic pipeline distribution detection system based on acoustic wave transmission according to claim 1, is characterized in that, described transmitter comprises transmitter power supply, high-power vibrator acoustic wave transmitter, power amplifier, MCU signal generator, described transmitting The power supply of the machine is respectively connected with the high-power vibrator acoustic wave transmitter, the power amplifier and the MCU signal generator for supplying power. The MCU signal generator is connected with the high-power vibrator acoustic wave transmitter through the power amplifier, and the high-power vibrator acoustic wave transmitter is connected. Connects to the pipe port for propagating the generated sound waves. 3. The automatic pipeline distribution detection system based on sound wave transmission according to claim 1 or 2, wherein the receiver comprises a receiver power supply, a control terminal, an Internet of Things module, a ZigBee network module terminal, a sound wave amplifier, a digital A filter converter, a display, a filter, a pre-sound wave amplifier, and a pickup, the pickup receives the sound wave propagating through the port of the geological receiver, and the pickup is connected to the sound wave amplifier, filter, sound wave amplifier, and digital filter converter in turn. One way of the filter converter is connected with the ZigBee network module terminal, and the other way is connected with the display, and the ZigBee network module terminal is connected with the control terminal through the Internet of Things module; the receiver power supply is respectively connected with the pickup, the display, and the ZigBee network module terminal for powered by. 4. An automatic pipeline distribution detection method based on sound wave transmission is characterized in that, the transmitter generates sound waves and propagates through the pipeline, and at least three receivers receive the sound waves propagated by the pipeline through geology and determine the direction and intensity of the pipeline according to the direction and intensity of the sound wave propagation. The location generates a distribution map of the pipeline, and according to the distribution map of the pipeline, finds a location that is significantly higher than the surrounding sound wave intensity, and the location is the location of the leak point of the pipeline. 5. the automatic pipeline distribution detection method based on sound wave transmission according to claim 4, is characterized in that, described transmitter produces sound wave and propagates through pipeline, specifically he is: described MCU signal generator produces frequency, adjustable amplitude The electric signal is then amplified by the power amplifier, and the high-power vibrator acoustic wave transmitter converts the amplified electric signal into acoustic waves. 6. The automatic pipeline distribution detection method based on sound wave transmission according to claim 5, characterized in that, the at least three receivers receive the sound waves propagated by the pipeline through geology and determine the position of the pipeline according to the direction and intensity of sound wave propagation to generate The distribution diagram of the pipeline, specifically: the sound wave is transmitted to the geology through the pipeline, the pickup receives the sound wave propagated by the geology, the sound wave is amplified by the pre-acoustic wave amplifier, filtered by the filter, and filtered by the acoustic wave amplifier. The converter performs analog-to-digital conversion and displays it on the display. The ZigBee network module terminal receives the sound wave converted by the digital filter converter, determines the position of the pipeline according to its own positioning module, the direction and intensity of sound wave propagation, and finally generates the distribution map of the pipeline. 7. The automatic pipeline distribution detection method based on sound wave transmission according to claim 6, characterized in that, according to the distribution map of the pipeline, find a position that is significantly higher than that of the surrounding sound wave intensity, and this position is the leakage of the pipeline. The point position is specifically: searching for a peak signal in the distribution diagram of the pipeline, and the position of the pipeline corresponding to the peak signal is to determine the leak point position of the pipeline.

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