CN110553965A - pressurized water test detection method in grouting engineering - Google Patents

pressurized water test detection method in grouting engineering Download PDF

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Publication number
CN110553965A
CN110553965A CN201810561865.3A CN201810561865A CN110553965A CN 110553965 A CN110553965 A CN 110553965A CN 201810561865 A CN201810561865 A CN 201810561865A CN 110553965 A CN110553965 A CN 110553965A
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China
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sensor
node
sensor node
rssi
pressurized water
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CN201810561865.3A
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Chinese (zh)
Inventor
徐蒙
徐力生
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Changsha Guanzuan Electronic Technology Co Ltd
CHANGSHA LIJIN TECHNOLOGY DEVELOPMENT CO LTD
Central South University
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Changsha Guanzuan Electronic Technology Co Ltd
CHANGSHA LIJIN TECHNOLOGY DEVELOPMENT CO LTD
Central South University
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Priority to CN201810561865.3A priority Critical patent/CN110553965A/en
Publication of CN110553965A publication Critical patent/CN110553965A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/082—Investigating permeability by forcing a fluid through a sample
    • G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention discloses a pressurized water test detection method in grouting engineering, which comprises the following steps: s1, arranging sensor nodes at the positions of grouting equipment, wherein each grouting equipment is provided with at least one sensor node; and at least one relay node is arranged, the relay node is connected with a plurality of sensor nodes, and the relay node periodically broadcasts positioning request information M to the sensor nodes within a one-hop range around. According to the invention, by introducing a decision mechanism in a signal acquisition stage and selecting a data transmission mode, the loss in the signal transmission process is reduced, the data delay is reduced, the data sampling frequency is improved, the network transmission efficiency is improved, and the detection signal transmission in a pressurized water test is more stable and efficient.

Description

Pressurized water test detection method in grouting engineering
Technical Field
The invention relates to the technical field of grouting, in particular to a pressurized water test detection method in grouting engineering.
Background
The water pressure test is a penetration test in a drilling hole in a hydrogeological test, and the water pressure test in a grouting project mainly comprises the steps of knowing the relative water permeability of a rock body in a grouting section, the opening degree of a rock body crack, the property of a filling material and the like. If a large-scale hydraulic structure such as a dam is built, a pressurized-water test is generally used for knowing the leakage condition of a foundation, and the pressurized-water test is used for designing an anti-seepage grouting curtain of the dam, checking the anti-seepage effect of the grouting curtain and the like.
The data which needs to be collected in the pressurized water test of the grouting project comprise flow, pressure and the like in the grouting process. However, due to the concentrated construction equipment and workers on the construction site and the high interference of temperature, humidity and noise, the signal is easily interfered by scattering, reflection and diffraction caused by the obstacles in the transmission process, the fluctuation range of the signal is large, so that the data communication link is easy to break down, and the data transmission quality is reduced.
the existing grouting pressurized-water test detection technology mostly depends on experienced manual work to judge the pressurized-water test effect, or data acquisition equipment with simple installation is used for acquiring data to present, an intelligent monitoring and processing means is lacked, the detection process of the pressurized-water test has high data transmission energy consumption, detection signals generate time delay and other problems, especially under a complex environment, the data communication of the pressurized-water test operation always has signal attenuation, and the grouting pressurized-water test detection technology is easy to be troubled by the problems of influence of link faults and the like.
Disclosure of Invention
the invention aims to overcome the defects of the prior art and provide a pressurized water test detection method in grouting engineering, which reduces the loss in the signal transmission process, reduces the data delay, improves the sampling frequency of data, improves the network transmission efficiency and enables the detection signal transmission in the pressurized water test to be more stable and efficient.
The purpose of the invention is realized by the following technical scheme: a pressurized water test detection method in grouting engineering comprises the following steps:
S1, arranging sensor nodes at the positions of grouting equipment, wherein each grouting equipment is provided with at least one sensor node; setting at least one relay node, wherein the relay node is connected with a plurality of sensor nodes and periodically broadcasts positioning request information M to the sensor nodes within a one-hop range around;
S2, detecting whether a grouting equipment control system sends a data acquisition command or not, if so, slowly placing a current meter probe arranged at the sensor node into a test borehole through a servo system, wherein the current meter probe is used for acquiring current data in the test borehole and storing the acquired current data in the sensor node; then, the sensor node storing the flow rate data receives the positioning request information M in step S1, after receiving the positioning request information M, extracts all RSSI values in the positioning request information M, and calculates an average value after removing a maximum value and a minimum value of a group of RSSI values within a set time period T, and takes the average value as a first RSSI value of the relay node requesting positioning in step S1, and then jumps to step S3; if not, not processing;
S3, determining the relay node of the first RSSI value, and sending a path loss factor request R to the sensor node; the sensor node receiving the path loss factor request R sends a second RSSI to other relay nodes or other sensor nodes in a surrounding one-hop range, the other sensor nodes only receive second RSSI values sent by the sensor nodes or other relay nodes in the one-hop range except the relay node requiring positioning, the relay node receiving the second RSSI values calculates a path loss factor n, and replies the path loss factor n to the relay node requiring positioning in the step S1;
S4, after the relay node in the step S1 receives the path loss factor n value, calculating the distance between the sensor nodes based on the n value;
s5, setting a distance threshold, judging whether the distance calculation result in the step S4 is lower than the distance threshold, if so, transmitting the flow speed data stored in the sensor node of which the distance calculation result is lower than the distance threshold in the step S4 to a relay node connected with the sensor node, and transmitting the flow speed detection data in the water pressurizing test based on the relay node; if not, the flow velocity detection data in the pressurized water test is collected and transmitted based on the sensor node without processing.
Further, in step S3, the path loss factor n is calculated using the following formula:
The RSSI b is an RSSI value of the sensor node a, the RSSI a is an RSSI value of the sensor node b, d a is a distance from the sensor node a to a reference node d 0, d b is a distance from the sensor node b to a reference node d 0, and X σ is a gaussian random noise variable with an average value of 0 and a variance of σ.
Further, in step S4, the value of n is substituted into the following formula to calculate d a:
then, the distance between the sensor nodes a, b is calculated.
further, step SS2 is included for replacing step S2;
SS2, arranging a pressure sensor probe in the sensor node, detecting whether a grouting equipment control system sends a data acquisition instruction, if so, acquiring pressure data in the test drill hole through the pressure sensor probe, and storing the acquired pressure data in the sensor node; then, the sensor node which stores the pressure data receives the positioning request information M in step S1, after receiving the positioning request information M, extracts all RSSI values in the positioning request information M, and calculates an average value after removing a maximum value and a minimum value of a group of RSSI values within a set time period T, and takes the average value as a first RSSI value of the relay node which requests positioning in step S1, and then jumps to step S3; if not, no processing is performed.
Further, step SS5 is included for replacing step S5;
SS5, setting a distance threshold, judging whether the distance calculation result in the step S4 is lower than the distance threshold, if so, transmitting pressure data stored in the sensor node of which the distance calculation result is lower than the distance threshold in the step S4 to a relay node connected with the sensor node, and transmitting pressure detection data in a pressurized water test based on the relay node; if not, the pressure data in the pressurized water test is collected and transmitted based on the sensor node without processing.
Further, a fault detection step S6 is included;
S6, setting the RSSI 0 of the initialized sensor node, moving the set distance to the other sensor nodes which are normally communicated within the one-hop range of the initialized sensor node, then detecting whether the RSSI value of the sensor node is lower than the RSSI 0, if so, continuing to move the set distance to the other sensor nodes which are normally communicated within the one-hop range of the initialized sensor node, otherwise, detecting whether the packet loss rate rho of the sensor node is equal to zero, if the packet loss rate rho is equal to zero, setting a new sensor node at the position, and if the packet loss rate rho is greater than zero, continuing to move the set distance to the other sensor nodes which are normally communicated within the one-hop range of the initialized sensor node.
Furthermore, the sensor node comprises an MCU module, a memory module, a communication module, a sensor module and a power module, wherein the memory module, the communication module, the sensor module and the power module are respectively connected with the MCU module.
Further, the sensor module comprises a sensor and an AD conversion module, the sensor and the AD conversion module are connected, and the AD conversion module is connected with the MCU module.
further, the communication module comprises a wireless communication module, and the wireless communication module is connected with the MCU module.
Further, the wireless communication module comprises a ZigBee wireless module.
the invention has the beneficial effects that:
(1) The invention uses a decision mechanism for the transmission mode of the detection data in the grouting and water-pressing test for the first time, and solves the problems that the conventional technology only directly collects and transmits the data to cause data communication delay, so that the detection accuracy, precision, efficiency, instability and the like in the grouting and water-pressing test are influenced. By introducing a decision mechanism in the signal acquisition stage and selecting a data transmission mode, the data waiting time delay is reduced, the loss in the signal transmission process is reduced, the sampling frequency of data is improved, the network transmission efficiency is improved, and the signal transmission is more stable and efficient.
(2) When the power is constant, the data transmission rate can be improved, the power can be saved when the transmission rate is constant, the data transmission time delay is reduced, and after the dam is built, because the dam needs to bear large osmotic pressure, the detection precision, accuracy and speed of parameters such as pressurized-water flow, pressure and the like are improved, the permeability resistance, durability and damage resistance of the grouting curtain are improved, and the quality of a wireless network communication link in a pressurized-water detection test is improved under large pressurized-water pressure.
(3) the invention reduces the node transmission energy consumption, has low cost, ensures that each communication node in the network selects a data acquisition and transmission mode according to a decision mechanism, reduces the energy waste in the area where grouting equipment is not dense, improves the service life of the network, utilizes the relay for pressurized water detection data transmission, has short data transmission distance, reduces the hardware faults of the node, overcomes the influence of the corridor environment on the pressurized water data detection and transmission, reduces the errors of data packets and improves the detection accuracy of a pressurized water test.
Drawings
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of the method steps of the present invention.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following. All of the features disclosed in this specification, or all of the steps of a method or process so disclosed, may be combined in any combination, except combinations where mutually exclusive features and/or steps are used.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
specific embodiments of the present invention will be described in detail below, and it should be noted that the embodiments described herein are only for illustration and are not intended to limit the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known circuits, software, or methods have not been described in detail so as not to obscure the present invention.
As shown in fig. 1, a pressurized water test detection method in grouting engineering includes the following steps:
s1, arranging sensor nodes at the positions of grouting equipment, wherein each grouting equipment is provided with at least one sensor node; setting at least one relay node, wherein the relay node is connected with a plurality of sensor nodes and periodically broadcasts positioning request information M to the sensor nodes within a one-hop range around;
s2, detecting whether a grouting equipment control system sends a data acquisition command or not, if so, slowly placing a current meter probe arranged at the sensor node into a test borehole through a servo system, wherein the current meter probe is used for acquiring current data in the test borehole and storing the acquired current data in the sensor node; then, the sensor node storing the flow rate data receives the positioning request information M in step S1, after receiving the positioning request information M, extracts all RSSI values in the positioning request information M, and calculates an average value after removing a maximum value and a minimum value of a group of RSSI values within a set time period T, and takes the average value as a first RSSI value of the relay node requesting positioning in step S1, and then jumps to step S3; if not, not processing;
s3, determining the relay node of the first RSSI value, and sending a path loss factor request R to the sensor node; the sensor node receiving the path loss factor request R sends a second RSSI to other relay nodes or other sensor nodes in a surrounding one-hop range, the other sensor nodes only receive second RSSI values sent by the sensor nodes or other relay nodes in the one-hop range except the relay node requiring positioning, the relay node receiving the second RSSI values calculates a path loss factor n, and replies the path loss factor n to the relay node requiring positioning in the step S1;
S4, after the relay node in the step S1 receives the path loss factor n value, calculating the distance between the sensor nodes based on the n value;
s5, setting a distance threshold, judging whether the distance calculation result in the step S4 is lower than the distance threshold, if so, transmitting the flow speed data stored in the sensor node of which the distance calculation result is lower than the distance threshold in the step S4 to a relay node connected with the sensor node, and transmitting the flow speed detection data in the water pressurizing test based on the relay node; if not, the flow velocity detection data in the pressurized water test is collected and transmitted based on the sensor node without processing.
Alternatively, in step S3, the path loss factor n is calculated using the following formula:
the RSSI b is an RSSI value of the sensor node a, the RSSI a is an RSSI value of the sensor node b, d a is a distance from the sensor node a to a reference node d 0, d b is a distance from the sensor node b to a reference node d 0, and X σ is a gaussian random noise variable with an average value of 0 and a variance of σ.
Alternatively, in step S4, the value of n is substituted into the following formula to calculate d a:
then, the distance between the sensor nodes a, b is calculated.
Optionally, step SS2 is included for replacing step S2;
SS2, arranging a pressure sensor probe in the sensor node, detecting whether a grouting equipment control system sends a data acquisition instruction, if so, acquiring pressure data in the test drill hole through the pressure sensor probe, and storing the acquired pressure data in the sensor node; then, the sensor node storing the flow rate data receives the positioning request information M in step S1, after receiving the positioning request information M, extracts all RSSI values in the positioning request information M, and calculates an average value after removing a maximum value and a minimum value of a group of RSSI values within a set time period T, and takes the average value as a first RSSI value of the relay node requesting positioning in step S1, and then jumps to step S3; if not, no processing is performed.
Optionally, step SS5 is included for replacing step S5;
SS5, setting a distance threshold, judging whether the distance calculation result in the step S4 is lower than the distance threshold, if so, transmitting pressure data stored in the sensor node of which the distance calculation result is lower than the distance threshold in the step S4 to a relay node connected with the sensor node, and transmitting pressure detection data in a pressurized water test based on the relay node; if not, the pressure data in the pressurized water test is collected and transmitted based on the sensor node without processing.
Optionally, a fault detection step S6 is included;
s6, setting the RSSI 0 of the initialized sensor node, moving the set distance to the other sensor nodes which are normally communicated within the one-hop range of the initialized sensor node, then detecting whether the RSSI value of the sensor node is lower than the RSSI 0, if so, continuing to move the set distance to the other sensor nodes which are normally communicated within the one-hop range of the initialized sensor node, otherwise, detecting whether the packet loss rate rho of the sensor node is equal to zero, if the packet loss rate rho is equal to zero, setting a new sensor node at the position, and if the packet loss rate rho is greater than zero, continuing to move the set distance to the other sensor nodes which are normally communicated within the one-hop range of the initialized sensor node.
Optionally, the sensor node includes an MCU module, a memory module, a communication module, a sensor module and a power module, and the memory module, the communication module, the sensor module and the power module are respectively connected to the MCU module.
Optionally, the sensor module includes a sensor and an AD conversion module, the sensor and the AD conversion module, and the AD conversion module is connected to the MCU module.
Optionally, the communication module includes a wireless communication module, and the wireless communication module is connected to the MCU module.
Optionally, the wireless communication module comprises a ZigBee wireless module.
In other technical features of the embodiment, those skilled in the art can flexibly select and use the features according to actual situations to meet different specific actual requirements. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the present invention. In other instances, well-known algorithms, methods or systems have not been described in detail so as not to obscure the present invention, and are within the scope of the present invention as defined by the claims.
For simplicity of explanation, the foregoing method embodiments are described as a series of acts or combinations, but those skilled in the art will appreciate that the present application is not limited by the order of acts, as some steps may occur in other orders or concurrently depending on the application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and elements referred to are not necessarily required in this application.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
the disclosed systems, modules, and methods may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be only one logical division, and there may be other divisions in actual implementation, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be referred to as an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may also be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
It will be understood by those skilled in the art that all or part of the processes in the methods for implementing the embodiments described above can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when executed, the program can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a ROM, a RAM, etc.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. a pressurized water test detection method in grouting engineering is characterized by comprising the following steps:
s1, arranging sensor nodes at the positions of grouting equipment, wherein each grouting equipment is provided with at least one sensor node; setting at least one relay node, wherein the relay node is connected with a plurality of sensor nodes and periodically broadcasts positioning request information M to the sensor nodes within a one-hop range around;
S2, detecting whether a grouting equipment control system sends a data acquisition command or not, if so, slowly placing a current meter probe arranged at the sensor node into a test borehole through a servo system, wherein the current meter probe is used for acquiring current data in the test borehole and storing the acquired current data in the sensor node; then, the sensor node storing the flow rate data receives the positioning request information M in step S1, after receiving the positioning request information M, extracts all RSSI values in the positioning request information M, and calculates an average value after removing a maximum value and a minimum value of a group of RSSI values within a set time period T, and takes the average value as a first RSSI value of the relay node requesting positioning in step S1, and then jumps to step S3; if not, not processing;
S3, determining the relay node of the first RSSI value, and sending a path loss factor request R to the sensor node; the sensor node receiving the path loss factor request R sends a second RSSI to other relay nodes or other sensor nodes in a surrounding one-hop range, the other sensor nodes only receive second RSSI values sent by the sensor nodes or other relay nodes in the one-hop range except the relay node requiring positioning, the relay node receiving the second RSSI values calculates a path loss factor n, and replies the path loss factor n to the relay node requiring positioning in the step S1;
S4, after the relay node in the step S1 receives the path loss factor n value, calculating the distance between the sensor nodes based on the n value;
S5, setting a distance threshold, judging whether the distance calculation result in the step S4 is lower than the distance threshold, if so, transmitting the flow speed data stored in the sensor node of which the distance calculation result is lower than the distance threshold in the step S4 to a relay node connected with the sensor node, and transmitting the flow speed detection data in the water pressurizing test based on the relay node; if not, the flow velocity detection data in the pressurized water test is collected and transmitted based on the sensor node without processing.
2. the method for detecting the pressurized water test in grouting engineering according to claim 1, wherein in step S3, the path loss factor n is calculated by using the following formula:
The RSSI b is an RSSI value of the sensor node a, the RSSI a is an RSSI value of the sensor node b, d a is a distance from the sensor node a to a reference node d 0, d b is a distance from the sensor node b to a reference node d 0, and X σ is a gaussian random noise variable with an average value of 0 and a variance of σ.
3. The method as claimed in claim 1, wherein the n value is substituted into the following formula to calculate d a in step S4:
Then, the distance between the sensor nodes a, b is calculated.
4. a pressurized water test detection method in grouting engineering based on claim 1, characterized by comprising the steps of SS2 for replacing step S2;
SS2, arranging a pressure sensor probe in the sensor node, detecting whether a grouting equipment control system sends a data acquisition instruction, if so, acquiring pressure data in the test drill hole through the pressure sensor probe, and storing the acquired pressure data in the sensor node; then, the sensor node which stores the pressure data receives the positioning request information M in step S1, after receiving the positioning request information M, extracts all RSSI values in the positioning request information M, and calculates an average value after removing a maximum value and a minimum value of a group of RSSI values within a set time period T, and takes the average value as a first RSSI value of the relay node which requests positioning in step S1, and then jumps to step S3; if not, no processing is performed.
5. A pressurized water test detection method in grouting engineering based on claim 4, characterized by comprising the steps of SS5 for replacing the step S5;
SS5, setting a distance threshold, judging whether the distance calculation result in the step S4 is lower than the distance threshold, if so, transmitting pressure data stored in the sensor node of which the distance calculation result is lower than the distance threshold in the step S4 to a relay node connected with the sensor node, and transmitting pressure detection data in a pressurized water test based on the relay node; if not, the pressure data in the pressurized water test is collected and transmitted based on the sensor node without processing.
6. The pressurized water test detection method in grouting engineering according to any one of claims 1 to 5, characterized by comprising a failure detection step S6;
S6, setting the RSSI 0 of the initialized sensor node, moving the set distance to the other sensor nodes which are normally communicated within the one-hop range of the initialized sensor node, then detecting whether the RSSI value of the sensor node is lower than the RSSI 0, if so, continuing to move the set distance to the other sensor nodes which are normally communicated within the one-hop range of the initialized sensor node, otherwise, detecting whether the packet loss rate rho of the sensor node is equal to zero, if the packet loss rate rho is equal to zero, setting a new sensor node at the position, and if the packet loss rate rho is greater than zero, continuing to move the set distance to the other sensor nodes which are normally communicated within the one-hop range of the initialized sensor node.
7. The pressurized water test detection method in grouting engineering according to claim 6, wherein the sensor node comprises an MCU module, a memory module, a communication module, a sensor module and a power module, and the memory module, the communication module, the sensor module and the power module are respectively connected with the MCU module.
8. the pressurized water test detection method in grouting engineering according to claim 7, wherein the sensor module comprises a sensor and an AD conversion module, the sensor and the AD conversion module are connected, and the AD conversion module is connected with the MCU module.
9. the pressurized water test detection method in grouting engineering according to claim 7, wherein the communication module comprises a wireless communication module, and the wireless communication module is connected with the MCU module.
10. The pressurized water test detection method in grouting engineering according to claim 9, wherein the wireless communication module comprises a ZigBee wireless module.
CN201810561865.3A 2018-06-04 2018-06-04 pressurized water test detection method in grouting engineering Pending CN110553965A (en)

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