High-precision overground and underground two-way communication trenchless pipeline construction and detection system
By adopting a high-precision above-ground and underground bidirectional communication system in the construction of non-excavation pipelines, the problem of limited signal propagation distance and susceptibility to interference in the prior art is solved, and high-precision depth and orientation information processing is achieved, and the accuracy and reliability of construction are improved.
Patent Information
- Application Number
- CN202510195392.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-05-30
AI Technical Summary
In the construction of non-excavation pipelines, existing wireless guides have problems such as limited signal propagation distance and are susceptible to metal interference and ground interference, resulting in positioning and depth calculation deviations.
High-precision over-ground and underground bidirectional communication non-excavation pipeline construction and detection system is adopted. The transmitting source A and receiver A are on the ground, and the transmitting source B and receiver B are on the ground. The bidirectional communication forms a closed loop of digital transmission information, ignoring the above-ground and underground interference sources to achieve accurate non-excavation pipeline construction and detection.
It realizes high-precision depth and orientation information processing in non-excavation pipeline construction, ignores above-ground and underground interference, and improves the accuracy and reliability of construction.
Smart Images
Figure CN120061817A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of pipeline detection, and in particular to a high-precision non-excavation pipeline construction and detection system for two-way communication above and below the ground. Background Art
[0002] Currently, during non-excavation pipeline construction, a wireless guidance instrument is generally used for real-time positioning of the construction drill bit and depth calculation. The guidance instrument can also be used to detect the orientation and depth of the pipelines that have been laid; the realization principle of these functions of the guidance instrument is to utilize the magnetic field propagation path law of the magnetic dipole and the signal amplitude attenuation law. A magnetic field emission source is placed in the pipeline, and a three-dimensional orthogonal antenna is used on the ground to receive the magnetic field signal. After calculation and processing by the DSP chip, the current azimuth and depth of the drill bit are obtained; there are three problems with the current wireless guidance instrument: the installation space of the underground emission source is limited, resulting in the emission power of the emission source not being able to be made very large, affecting the signal propagation distance; the currently used signal frequency band is about 0.3 - 40 kHz. During the propagation of the magnetic field signal in this frequency band, it is easily affected by various metal objects, resulting in changes in the propagation law and signal attenuation law, causing deviations in positioning and depth calculation; the interference signals emitted by various electrical equipment on the ground will also greatly affect the correctness of the receiving instrument; Such as Figure 1As shown, when not in development and construction, the drill rig provides power to push or pull the drill pipe or pipeline through the planned path underground; during construction, it is necessary to accurately know the current depth, azimuth, and attitude of the drill bit in real time to assist the next operation and construction; the current solution is to place a transmitting probe at the very front of the drill pipe of the construction pipeline. This probe is mainly composed of a battery, sensors, and a magnetic field signal transmitting antenna. The sensors detect the inclination angle and facing angle of the current probe, and the transmitting antenna transmits a magnetic field signal, which is also modulated with digital information. These digital information are the inclination angle and facing angle of the probe detected by the sensors on the probe, and the probe operates powered by the battery; on the ground, the guide holds a receiver, and the receiver receives this magnetic field signal through a three-dimensional orthogonal antenna. By the amplitude and the positive and negative relationships of the three antenna signals, the azimuth of the underground transmitting probe can be judged; by analyzing the digital information carried by the magnetic field signal, information such as the inclination angle and facing angle of the underground probe can be known. Among them, the inclination angle and facing angle information of the probe are transmitted through digital modulation and demodulation. Due to a strict error detection mechanism, as long as the receiver can analyze it, it must be correct; however, information such as the azimuth and depth of the probe is processed by calculating the amplitude of the magnetic field signal, and the amplitude of the magnetic field is greatly affected by interference in the propagation path (signal frequency band: 0.3 - 40k) and interference on the ground, and inaccurate data may even appear, which will seriously affect the construction and even bring serious construction consequences. Therefore, the present invention proposes a high-precision above-ground and underground two-way communication trenchless pipeline construction and detection system to solve the problems existing in the prior art. Summary of the Invention
[0003] In view of the above problems, the present invention proposes a high-precision above-ground and underground two-way communication trenchless pipeline construction and detection system. The entire process of this high-precision above-ground and underground two-way communication trenchless pipeline construction and detection system uses two-way communication. There is a set of transmitting and receiving systems on the ground, and there is also a set of transmitting and receiving systems underground, forming a closed loop of digital transmission information. Interference sources around the ground receiver can be ignored, and metal interference objects during the propagation of the magnetic field can also be ignored, realizing accurate trenchless pipeline construction and detection.
[0004] To achieve the object of the present invention, the present invention is implemented through the following technical solutions: A high-precision non-excavation pipeline construction and detection system for two-way communication above and below the ground, including a transmitter A, a receiver A, a transmitter B, and a receiver B. The transmitter A and the receiver B are located underground, and the transmitter A and the receiver B are located at the construction drill pipe at the front end of the drill pipe. The receiver A and the transmitter B are located on the ground, and the receiver A and the transmitter B are located at the guide. The transmitter A and the receiver A operate in the same frequency band, and the transmitter A is used to transmit electromagnetic waves modulated with digital information. The receiver A is used to receive electromagnetic waves, demodulate the digital information, and calculate the depth relationship and azimuth relationship with the transmitter A. The transmitter B and the receiver B operate in the same frequency band, and the transmitter B is used to transmit electromagnetic waves modulated with digital information. The receiver B is used to receive electromagnetic waves, demodulate the digital information, and calculate the depth relationship and azimuth relationship with the transmitter B; The receiver B sends the parsed depth and azimuth relationship information with the transmitter B to the transmitter A. The transmitter A simultaneously transmits the parsed self-facing angle and inclination angle, as well as the depth and azimuth information received from the receiver B, to the receiver A in a digital manner for digital processing of the depth and azimuth information.
[0005] A further improvement lies in that: the frequency band in which the transmitter A and the receiver A operate is 0.3 - 40k, and the frequency band in which the transmitter B and the receiver B operate is 1 - 100hz.
[0006] A further improvement lies in that: the transmitter B is used to move at any time, and the transmitter B is composed of a power battery, an inverter, and a transmitting antenna. The output of the inverter is 1 - 100hz, and the DC bus voltage is 100 - 200v. The transmitting antenna is composed of a copper coil wound around a magnetic core.
[0007] A further improvement lies in that: the structures of the transmitter A and the transmitter B are the same, and the transmitting voltage of the transmitter A is 10 - 20v.
[0008] A further improvement lies in that: the receiver A is used to receive a magnetic field signal of 0.3 - 40k for positioning and data parsing of the transmitter A, and the receiver A is composed of a receiving coil, a DSP, and a display screen. The receiver B is used to receive a magnetic field signal of 1 - 100hz for positioning and data parsing of the transmitter B, and the receiver B is composed of a receiving coil and a DSP.
[0009] A further improvement lies in that: the receiving coil of the receiver A is a multi-group orthogonal combination of air-core coils. The receiving coil of the receiver B is one of a multi-group orthogonal combination of air-core coils, an induction wire type coil, and a fluxgate sensor. The DSP is a digital signal processing chip, which is used to send the parsed data to the display screen for display.
[0010] A further improvement lies in that: the receiver B sends the information parsed by itself to the emission source A, and the emission source A conducts unified emission. A wired or short-range wireless connection transmission method is adopted between the receiver B and the emission source A.
[0011] A further improvement lies in that: when the working conditions are simple and the ground interference is small, a working mode in which the emission source A and the receiver A cooperate is adopted; when the working conditions are complex and high precision is required, a working mode in which the emission source A, the receiver A, the emission source B and the receiver B cooperate with each other is adopted.
[0012] The beneficial effects of the present invention are as follows: 1. The present invention adopts the cooperation of the emission source A, the receiver A, the emission source B and the receiver B. The emission source A and the emission source B respectively emit electromagnetic waves modulated with digital information to the receiver A and the receiver B. The receiver A and the receiver B respectively receive and demodulate the digital information, calculate the depth relationship and azimuth relationship with the emission location. The receiver B sends the parsed depth and azimuth relationship information of the emission source B to the emission source A. The emission source A simultaneously transmits the parsed self-facing angle and inclination angle, as well as the depth and azimuth information received from the receiver B, to the receiver A in a digital manner and displays it, realizing the digital processing of depth and azimuth information. The whole process adopts two-way communication. There is a set of emission and reception systems on the ground, and there is also a set of emission and reception systems underground, forming a digital transmission information closed loop. The interference sources around the ground receiver can be ignored, and the metal interference objects during the magnetic field propagation process can also be ignored, realizing accurate trenchless pipeline construction and detection.
[0013] 2. The working frequency bands of the emission source A and the receiver A of the present invention are 0.3 - 40k, and the working frequency bands of the emission source B and the receiver B are 1 - 100hz. Ultra-low frequency signals are emitted on the ground, and the power can be made infinitely large. Using ultra-low frequency signals, the penetration is good, and the interference is less during underground parsing. When the information including depth and azimuth is transmitted back to the ground in a digital manner, the result accuracy is high, realizing the detection of depth and azimuth with super strong anti-interference. Description of the Drawings
[0014] Figure 1 It is a schematic diagram of the prior art; Figure 2 It is a schematic diagram of the principle of the present invention; Figure 3 It is a block diagram of the composition of the emission source B of the present invention; Figure 4 It is a block diagram of the composition of the receiver A of the present invention; Figure 5 It is a communication schematic diagram of the emission source A and the receiver B of the present invention. Detailed Embodiments
[0015] To deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention. Embodiment 1
[0016] According to Figure 2 , 3 , 4, and 5, this embodiment proposes a high-precision non-excavation pipeline construction and detection system for two-way communication between above-ground and underground, including transmitter A, receiver A, transmitter B, and receiver B. The transmitter A and receiver B are located underground, and the transmitter A and receiver B are located at the construction drill pipe at the front end of the drill pipe. The receiver A and transmitter B are located on the ground, and the receiver A and transmitter B are located at the guide. The transmitter A and receiver A operate in the same frequency band, and the transmitter A is used to transmit electromagnetic waves modulated with digital information. The receiver A is used to receive the electromagnetic waves, demodulate the digital information, and calculate the depth relationship and azimuth relationship with the transmitter A. The transmitter B and receiver B operate in the same frequency band, and the transmitter B is used to transmit electromagnetic waves modulated with digital information. The receiver B is used to receive the electromagnetic waves, demodulate the digital information, and calculate the depth relationship and azimuth relationship with the transmitter B. The transmitter emits electromagnetic waves, and the digital information is modulated on the electromagnetic waves. The receiver receives the electromagnetic waves, demodulates the digital information, and simultaneously calculates the depth relationship and azimuth relationship with the transmitter according to the amplitude of the received electromagnetic waves. The receiver B sends the parsed depth and azimuth relationship information with the transmitter B to the transmitter A. The transmitter A simultaneously transmits the parsed self-facing angle and inclination angle, as well as the depth and azimuth information received from the receiver B, to the receiver A in a digital manner and displays them on the display screen, thus realizing the digital processing of the depth and azimuth information.
[0017] The frequency band in which the transmitter A and the receiver A operate is 0.3 - 40 kHz. This frequency has both a certain transmission energy and a certain penetrability, enabling information transmission at a certain rate. The frequency band in which the transmitter B and the receiver B operate is 1 - 100 Hz. The signal of this frequency has strong penetrability and can resist the interference of metal objects. However, the signal energy of the signal in this frequency band is very low. Therefore, the transmitter B on the ground needs to have a large transmitter to meet the positioning requirements within a depth of 30 meters. The environment around the receiver B underground is generally relatively clean, with at most 50 Hz power line interference, which can be removed by specifying filtering. On the ground, there are various interferences, especially strong pulse interference, which will have a very strong impact. Electromagnetic waves are divided into high frequency, medium frequency, low frequency, ultra-low frequency, etc. Ultra-low frequency is generally at the level of a few kHz or a few Hz. These signals carry little energy when propagating, but have very good penetrability. When conducting through-the-earth communication or deep-sea communication, signals in this frequency band are generally selected. It is mostly used in the military field or the oil exploration field, and later it is also widely used in the non-excavation construction and pipeline detection fields because non-excavation generally conducts construction and detection at a depth of several meters to dozens of meters underground.
[0018] The transmitter B is used to move at any time and at the same time needs to provide a large transmission power. The transmitter B consists of a power battery, an inverter, and a transmitting antenna. The power battery generally selects a lithium power battery, which can provide a working demand that can meet 12 hours, such as a capacity of 1 - 5 degrees of electricity, and the voltage is generally 24V or 48V. The output of the inverter is 1 - 100 Hz, and the DC bus voltage is 100 - 200V. The transmitting antenna consists of a copper coil wound around a magnetic core, and the inductance is at the level of several hundred millihenries.
[0019] The structure of the transmitter A is the same as that of the transmitter B, and the transmission voltage of the transmitter A is 10 - 20V. The capacity of the power battery of the transmitter A is smaller than that of the power battery of the transmitter B. Generally, it is 2 18650 battery cells, and the transmitting antenna of the transmitter A is also smaller.
[0020] The receiver A is used to receive the magnetic field signal of 0.3 - 40 kHz for the positioning and data analysis of the transmitter A, and the receiver A consists of a receiving coil, a DSP, and a display screen. The receiver B is used to receive the magnetic field signal of 1 - 100 Hz for the positioning and data analysis of the transmitter B, and the receiver B consists of a receiving coil and a DSP.
[0021] The receiving coil uses a hollow coil, which is composed of 3 groups in combination and 3D orthogonality. The inductance value is generally about a few millihenries. The DSP selects an advanced dedicated digital signal processing chip and sends the analyzed data to the display screen for display. Among them, compared with the receiver A, the receiving coil of the receiver B is smaller, and because it needs to be placed inside the drill bit, the receiver B does not have a display screen.
[0022] The receiver B sends the information parsed by itself to the transmitter A, and the transmitter A performs unified transmission. A wired or short-range wireless connection and transmission method is adopted between the receiver B and the transmitter A. The receiver B sends the information parsed by itself to the transmitter A for the transmitter A to transmit. The distance between the two is very short, within 0.5 - 1 m, and the communication method is as Figure 5 shown, adopting wired or short-range wireless methods such as Bluetooth, 433M, etc.
[0023] When the working conditions are simple and the ground interference is low, a working mode in which the transmitter A and the receiver A cooperate is adopted. When the working conditions are complex and high precision is required, a working mode in which the transmitter A, the receiver A, the transmitter B, and the receiver B cooperate with each other is adopted. The two working modes can be used separately or together according to the occasion, are suitable for various working conditions, and have high cost performance. Embodiment 2
[0024] According to Figure 2 、 3 、4, and 5, this embodiment proposes a high-precision non-excavation pipeline construction and detection system for two-way communication above and below the ground, including a transmitter A, a receiver A, a transmitter B, and a receiver B. The transmitter A and the receiver B are located underground, and the transmitter A and the receiver B are located at the construction drill pipe at the front end of the drill pipe. The receiver A and the transmitter B are located on the ground, and the receiver A and the transmitter B are located at the guide. The transmitter A and the receiver A operate in the same frequency band, and the transmitter A is used to transmit electromagnetic waves modulated with digital information. The receiver A is used to receive electromagnetic waves, demodulate the digital information, and calculate the depth relationship and azimuth relationship with the transmitter A. The transmitter B and the receiver B operate in the same frequency band, and the transmitter B is used to transmit electromagnetic waves modulated with digital information. The receiver B is used to receive electromagnetic waves, demodulate the digital information, and calculate the depth relationship and azimuth relationship with the transmitter B; The transmitter emits electromagnetic waves, and the digital information is modulated on the electromagnetic waves. The receiver receives the electromagnetic waves, demodulates the digital information, and at the same time calculates the depth relationship and azimuth relationship with the transmitter according to the amplitude of the received electromagnetic waves; The receiver B sends the information on the depth and azimuth relationship with the transmitter B parsed by it to the transmitter A. The transmitter A simultaneously transmits the parsed self-orientation angle and inclination angle, as well as the depth and azimuth information sent by the receiver B received, to the receiver A in a digital manner and displays them on the display screen, thus realizing the digital processing of the depth and azimuth information.
[0025] The transmitter A and the receiver B can also be regarded as a whole. At this time, the receiver B uses an inductive wire coil or a fluxgate sensor as the receiving coil.
[0026] When wireless transmission faces interference, the way for underground signals to be transmitted to the ground is to replace wireless transmission with a wired way for the underground transmitter A to be transmitted to the drilling rig end.
[0027] The position is judged by analyzing the azimuth angle of the ground underground, or it can also be judged by the maximum value of the underground signal. When the signal value analyzed underground is the largest, it is the place where the above-ground transmitter (transmitter B) is closest to the underground receiver (receiver B), which is directly above the underground transmitter (transmitter A).
[0028] This high-precision above-ground and underground two-way communication trenchless pipeline construction and detection system uses transmitter A, receiver A, transmitter B and receiver B to cooperate with each other. Transmitter A and transmitter B respectively transmit electromagnetic waves modulated with digital information to receiver A and receiver B. Receiver A and receiver B respectively receive and demodulate the digital information, calculate the depth relationship and azimuth relationship with the emission location. Receiver B sends the depth and azimuth relationship information analyzed with transmitter B to transmitter A. Transmitter A simultaneously transmits the analyzed self-facing angle and inclination angle, as well as the depth and azimuth information received from receiver B, to receiver A in a digital manner and displays it, realizing the digital processing of depth and azimuth information. The whole process uses two-way communication. There is a set of transmitting and receiving systems on the ground, and there is also a set of transmitting and receiving systems underground, forming a digital transmission information closed loop. The interference sources around the above-ground receiver can be ignored, and the metal interference objects during the magnetic field propagation process can also be ignored, realizing accurate trenchless pipeline construction and detection. In the present invention, the working frequency bands of transmitter A and receiver A are 0.3 - 40k, and the working frequency bands of transmitter B and receiver B are 1 - 100 hz. Ultra-low frequency signals are transmitted on the ground, and the power can be made infinitely large. Using ultra-low frequency signals, the penetration is good, the underground analysis is carried out, and there is less interference. When the information including depth and azimuth is transmitted back to the ground, digital transmission is used, and the result accuracy is high, realizing the detection of depth and azimuth with strong anti-interference ability.
[0029] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.
Claims
1. A high-precision above-ground and underground two-way communication trenchless pipeline construction and detection system, comprising a transmitter A, a receiver A, a transmitter B and a receiver B, characterized in that: The transmitting source A and the receiver B are located underground, and the transmitting source A and the receiver B are located at the construction drill rod at the front end of the drilling rig pipeline. The receiver A and the transmitting source B are located on the ground, and the receiver A and the transmitting source B are located at the guide. The transmitting source A and the receiver A work in the same frequency band, and the transmitting source A is used to transmit electromagnetic waves modulated with digital information, and the receiver A is used to receive electromagnetic waves, demodulate the digital information, and calculate the depth relationship and azimuth relationship with the transmitting source A. The transmitting source B and the receiver B work in the same frequency band, and the transmitting source B is used to transmit electromagnetic waves modulated with digital information, and the receiver B is used to receive electromagnetic waves, demodulate the digital information, and calculate the depth relationship and azimuth relationship with the transmitting source B. The receiver B sends the resolved depth and azimuth relationship information with the transmitting source B to the transmitting source A. The transmitting source A also transmits the resolved orientation angle and inclination angle of itself, as well as the depth and azimuth information sent by the receiver B, to the receiver A in a digital manner for digital processing of the depth and azimuth information.
2. According to claim 1, a high-precision above-ground and underground two-way communication trenchless pipeline construction and detection system is characterized by: The transmitting source A and the receiver A operate in a frequency band of 0.3-40k, and the transmitting source B and the receiver B operate in a frequency band of 1-100hz.
3. According to claim 1, a high-precision above-ground and underground two-way communication trenchless pipeline construction and detection system is characterized by: The transmitting source B is used to be mobile at any time, and the transmitting source B is composed of a power battery, an inverter and a transmitting antenna. The output of the inverter is 1-100 Hz, the DC bus voltage is 100-200 V, and the transmitting antenna is composed of a copper coil wound on a magnetic core.
4. A high-precision above-ground and underground two-way communication trenchless pipeline construction and detection system according to claim 3, characterized in that: The emission source A has the same structure as the emission source B, and the emission voltage of the emission source A is 10-20V.
5. According to claim 1, a high-precision above-ground and underground two-way communication trenchless pipeline construction and detection system is characterized by: The receiver A is used to receive the magnetic field signal of 0.3-40k to locate the transmitting source A and analyze the data, and the receiver A is composed of a receiving coil, a DSP and a display screen. The receiver B is used to receive the magnetic field signal of 1-100hz to locate the transmitting source B and analyze the data, and the receiver B is composed of a receiving coil and a DSP.
6. A high-precision above-ground and underground two-way communication trenchless pipeline construction and detection system according to claim 5, characterized in that: The receiving coil of the receiver A is an orthogonal combination of multiple groups of hollow coils, the receiving coil of the receiver B is an orthogonal combination of multiple groups of hollow coils, an induction wire coil, or a fluxgate sensor, and the DSP is a digital signal processing chip for sending the parsed data to a display screen for display.
7. The high-precision above-ground and underground two-way communication trenchless pipeline construction and detection system according to claim 1 is characterized by: The receiver B sends the information parsed by itself to the transmitting source A, which transmits the information uniformly. The receiver B and the transmitting source A adopt a wired or short wireless connection transmission mode.
8. The high-precision above-ground and underground two-way communication trenchless pipeline construction and detection system according to claim 1 is characterized by: When the working conditions are simple and there is little ground interference, the working mode in which the transmitter A cooperates with the receiver A is adopted. When the working conditions are complex and high accuracy is required, the working mode in which the transmitter A, the receiver A, the transmitter B and the receiver B cooperate with each other is adopted.