CN115190376A - A walk board motion state monitoring system for tension unwrapping wire process - Google Patents
A walk board motion state monitoring system for tension unwrapping wire process Download PDFInfo
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- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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Abstract
The invention provides a monitoring system for the motion state of a walking board in the tension paying-off process, which comprises the following steps: a GNSS positioning module, a tilt sensor, a rotary connector with a tension detection function and a single chip microcomputer system which are connected with each other are arranged on the walking board; the wireless module of the single chip microcomputer system is connected to a remote upper computer in a relay networking mode; the traction force, the tension and the walking board posture on the walking board are collected in real time, the walking board is positioned in real time, the speed information is transmitted to the far end, and the working state of the walking board is monitored at the far end. The tension pay-off construction process of the power transmission line can be effectively monitored, the operation is convenient and flexible, a large amount of manpower and material resources are saved, meanwhile, the working efficiency is improved, and the defect that the state of the running board is observed manually is overcome.
Description
Technical Field
The invention belongs to the technical field of tension pay-off of power transmission lines, and particularly relates to a walking board motion state monitoring system used in a tension pay-off process.
Background
In the whole stringing process of the power transmission line, the tension stringing of the lead at the stringing stage is the most important link, and the operation process is also the operation process with more equipment investment, high technical content and large safety risk in line construction. At present, when each power transmission and transformation company is in construction, a plurality of supervisors are mainly used for directly observing the whole paying-off process through naked eye tracking, and the interphone is used for communicating and feeding back the problem. However, the construction mode not only consumes a large amount of manpower and material resources, but also has potential safety hazards, in addition, the construction mode depends heavily on subjective initiative of supervisors, errors and mistakes easily occur without paying attention to the construction mode, the smoothness of construction is easily hindered, in addition, related state information of a walking board of a technician who informs a tension field only by a calling machine is not visual enough, the efficiency is low, and the construction process of manually monitoring tension and paying off of the transmission line has great difficulty. In summary, no effective solution for satisfying the tension paying-off monitoring of the power transmission line by overcoming the above disadvantages exists at present.
Disclosure of Invention
In order to fill the blank of the prior art, the invention provides a device for monitoring the motion state of a walking board in the tension paying-off process, which improves the traditional walking board and is provided with: the GNSS positioning module, the inclination angle sensor, the rotary connector with the tension detection function and the like are used for detecting the state information of the running board in real time and uploading the state information to the display control terminal; the adopted wireless transmission network comprises a plurality of wireless data transmission stations and relay nodes which are used as nodes and relays, star networking communication is carried out in a multi-node relay networking mode, so that bidirectional communication between a user side and a detection side is realized, and current state information of a walking board can be checked through a monitoring interface. The method can effectively monitor the tension paying-off construction process of the power transmission line, is convenient to operate, flexible to execute and high in efficiency, and overcomes the defects of the existing manual monitoring method.
The technical scheme is as follows:
a walk board motion state monitoring system for tension unwrapping wire process which characterized in that:
a GNSS positioning module, a tilt sensor, a rotary connector with a tension detection function and a single chip microcomputer system which are connected with each other are arranged on the walking board;
the wireless module of the single chip microcomputer system is connected to a remote upper computer in a relay networking mode;
the traction force, the tension and the walking board posture on the walking board are collected in real time, the walking board is positioned in real time, the speed information is transmitted to the far end, and the working state of the walking board is monitored at the far end.
Furthermore, the GNSS positioning module, the inclination angle sensor and the rotary connector with the tension detection function are connected to the single chip microcomputer after filtering, amplifying and sampling.
The GNSS is called as a global navigation satellite system, can receive the superposed signals of a plurality of satellite positioning signals, processes and solves the superposed signals in real time, thereby obtaining the current longitude and latitude, height, time, earth speed and other information of the running board, and sends the agreed data message format through the serial port.
The inclination angle sensor converts static gravity acceleration into inclination angle variation, so that walking board posture information including pitch angle, roll-over angle and the like is obtained. And the collected data is sent to the singlechip through the UART serial port.
The signal amplification module is used for processing signals output by the tension sensor, and amplifying millivolt-level voltage signals by hundreds of times and then transmitting the signals to the single chip microcomputer system for further processing.
Furthermore, a polystyrene heat insulation plate is laid in the inner space in the middle of the running board and used for arranging a running board state monitoring device consisting of a GNSS positioning module, a tilt angle sensor, a rotary connector with a tension detection function and a single chip microcomputer system, and strip-shaped grooves are formed in two sides of the front end and used for installing antennas; the board state monitoring device is provided with an aluminum alloy shell.
The design mainly considers that the satellite signal can be conveniently received and the communication quality of a wireless communication network can be conveniently enhanced on the premise of not influencing the normal work of a walking board; the walking plate is considered to experience complex working conditions in the tension paying-off process so as to realize the heat dissipation, wind, sand, water and impact prevention, isolation and interference resistance of the system.
The running board state monitoring device is provided with a power supply module besides a sensor and a single chip microcomputer, and the power supply module supplies power to each module after the lithium battery has the functions of filtering, voltage stabilization, current limiting, voltage monitoring and the like. The detachable lithium battery is equipped, so that the system can directly replace the battery conveniently, the longer working time is reached, and the construction efficiency is further improved. The voltage stabilizing modules respectively provide 3.3V, 5V and 10V stabilized voltages to meet the voltage requirements of different modules.
The battery module and the voltage stabilizing module are provided with the detachable lithium battery and the voltage stabilizing module, so that the battery can be directly replaced by the system conveniently, the longer working time is reached, and the construction efficiency is further improved.
The core of the micro control unit adopts an STM32 single chip microcomputer, the control module and each measuring module adopt a wired communication mode, the control module receives original data output by the measuring module, information required to be monitored in the construction process is extracted and calculated from the original data, and the processed information is packaged and output to the LoRa wireless transmission module by a protocol agreed with an upper computer.
Furthermore, the outer part of the rotary connector with the tension detection function adopts a 42CrMo alloy steel plate ring structure, and the bolt is matched with the aperture size of the connection part of the walking plates; the resistance strain gauge, the elastic sensitive element and the resistance measuring circuit module which are connected are arranged in the sensor.
On the basis of a conventional rotary connector, a 42CrMo alloy steel plate ring structure is adopted outside the rotary connector, so that the rotary connector has high strength, high toughness and high impact resistance, and the bolt is designed according to the size of the aperture of the connection part of the walking plates, so that the rotary connector is convenient to mount. The measuring unit is installed additional in structure center, measuring unit includes resistance strander, elasticity sensing element and resistance measurement circuit module, the measurement object of resistance measurement circuit is regarded as to the resistance strander, the elasticity sensing element who contains when this measuring unit receives measured power and produces and warp, the resistance strander that adheres to it warp together, make its resistance change, measuring circuit converts the change value that resistance strander resistance takes place into the signal of telecommunication this moment, can convert the signal of telecommunication of measuring circuit output into the pulling force value that rotary connector received through the conversion, rotary connector's use can be saved to the new-type force sensor of improved generation of design, the walking board is connected to one end, rotary connector is connected to one end.
Further, the relay networking adopts star networking communication; a wireless data transmission radio station is fixed on the running board, the wireless data transmission radio station is respectively placed in the tension field and the traction field, and a relay node is arranged on the iron tower on the basis of the principle that the mountain tops are shielded in the visual distance range of 2000m and the non-visual distance range. The design can ensure the construction of the interior wiring within the range of 20 kilometers at least.
Furthermore, the walking board is a pull-four walking board, and the wireless data transmission station is a LoRa wireless transmission module.
The one-pull-four walking board is a connecting device used for pulling four wires by using one pulling rope and is also a carrier of the monitoring device. It sets up a cuboid space in the middle of traditional walking board, will walk inside board state monitoring device embedding walking board, and place GNSS module antenna and wireless data radio station antenna in walking board rear end cavity position, be convenient for receive satellite signal and strengthen wireless communication network's communication quality. When the walking board is impacted to a certain degree, the monitoring device and the antenna can be well protected from being directly damaged by the embedded design; under the conditions that the traveling plate is pressed by a line pulley, a steering pulley and the like, the monitoring device and the antenna do not influence the normal passing of the traveling plate through the pulley due to the embedded design; considering that the walking board experiences complex working conditions in the process of tension paying-off, a polystyrene heat insulation board is laid in the inner space in the middle of the walking board and is matched with an all-aluminum alloy shell of the walking board state monitoring device, so that the functions of heat dissipation, wind, sand and water prevention, collision prevention, isolation, interference resistance and the like of the system are realized.
The LoRa wireless transmission module works at 433MHz frequency band, and is matched with a relay station at a proper position to form a star relay networking, so that mutual communication between the running board and the mobile terminal in the whole construction range is realized.
Furthermore, one board state monitoring device corresponds to one control center and a plurality of state monitoring terminals; the communication between the board state monitoring device and the state monitoring terminal is carried out by adopting a mode of timing polling alternate response.
The invention and the preferred scheme thereof can effectively monitor the tension paying-off construction process of the power transmission line, are convenient and flexible to operate, save a large amount of manpower and material resources, improve the working efficiency and make up for the defect of manually observing the running state.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
fig. 1 is a schematic structural view of the multifunctional walking board of the present invention.
Fig. 2 is a schematic structural diagram 1 of the improved tension sensor and the plug of the present invention.
Fig. 3 is a schematic view 2 of the improved new tension sensor and latch of the present invention.
Fig. 4 is a schematic diagram of a distribution of nodes in a wireless transmission network according to the present invention.
Fig. 5 is a flow chart of the operation of the board state monitoring device of the present invention.
Fig. 6 is an overall workflow diagram of the present invention.
In fig. 1: the system comprises a 1-traction end improved novel tension sensor, a 2-tension end improved novel tension sensor, a 3-micro control unit, a 4-battery electric quantity detection module, a 5-GNSS positioning module, a 6-voltage stabilization module, a 7-inclination sensor module, an 8-signal amplification module, a 9-power supply module, a 10-LoRa wireless transmission module, an 11-running board body, a 12-running board gravity balance hammer, a 13-traction rope, a 14-sub-wire, a 15-traction end rotary connector and a 16-tension end rotary connector.
In fig. 4: x-running board, F 1 -a tension field, F 2 A traction field, T 1 To T 11 Pylon No. 1 to pylon No. 11.
Detailed Description
In order to make the features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail as follows:
as shown in fig. 1, 5, and 6, in the device for monitoring the motion state of the running board for the tension paying-off process provided in this embodiment, in the specific structural arrangement on the running board body 11: the power supply module 9 firstly filters and then directly supplies power to the battery power detection module 4 and the LoRa wireless transmission module 10, secondly, the output current of the power supply module 7 is filtered and then is stabilized to 10V by the voltage stabilizing module 6 and then is transmitted to the improved novel tension sensor (comprising the traction end improved novel tension sensor 1 and the tension end improved novel tension sensor 2), is stabilized to 5V and is transmitted to the GNSS positioning module 5, the inclination angle sensor 7 and the signal amplifying module 8 for power supply, and is stabilized to 3.3V and then is transmitted to the micro control unit 3 for power supply; the improved novel tension sensor linearly converts a tension value into an analog voltage signal voltage of 0 to 20mV to be output under the condition of 10V power supply, the voltage signal is amplified to 0 to 3V through a signal amplification module 8, ADC sampling is carried out on a micro control unit 3, and a sampling result is stored in a corresponding register by the micro control unit 3; the GNSS positioning module 5 transmits 16-system digital signals to the micro control unit 3 through a serial port, the tilt sensor 7 transmits the 16-system digital signals to the micro control unit 3 through the serial port, the micro control unit 3 receives data of the two modules through a UART serial port and stores the data in a register, and when an upper computer sends a data request command to the micro control unit 3 through the LoRa wireless transmission module 10, the micro control unit 3 sends numerical values corresponding to the register to the upper computer through the LoRa wireless transmission module 10. The micro control unit 3 can generally adopt a minimum singlechip system.
As shown in fig. 2 and 3, in the present embodiment, a key design includes an improvement on the traction end rotary connector 15 and the tension end rotary connector 16, which is based on a conventional rotary connector, and the external part adopts a plate-and-ring structure made of 42CrMo alloy steel, and has the characteristics of high strength, high toughness and high impact resistance, the external structure is designed according to the size of the shape of the walking board connection and the rotary connector, and the plug is designed according to the size of the aperture of the walking board connection, so as to facilitate installation. The measuring unit is installed additional in structure center, measuring unit includes the resistance strander, elasticity sensing element and resistance measurement circuit module, the measurement object of resistance measurement circuit is regarded as to the resistance strander, the elasticity sensing element who contains when this measuring unit receives measured power and produces and warp, the resistance strander that adheres to it warp together, make its resistance change, measuring circuit converts the change value that resistance strander resistance takes place into the signal of telecommunication this moment, can convert the signal of telecommunication of measuring circuit output into the pulling force value that rotary connector received through the conversion, the use of conventional rotary connector can be replaced to the force transducer who has the pulling force detection function in this embodiment, the walking board is connected to one end, rotary connector is connected to one end.
The walking board gravity balance weight 12, the sub-lead 14 and the traction rope 13 are conventional structures on the walking board.
As shown in fig. 4, a specific example is described for the wireless networking manner of the present embodiment:
a wireless data transmission radio station is installed on the walking board X and serves as a network node; the tension field F1 and the traction field F2 are provided with monitoring centers and also respectively used as a network node; the iron towers T5 and T9 are respectively used as a network node because the engineering needs to be provided with monitoring observation points; in summary, the case is provided with 5 network nodes, and in order to achieve stable, continuous and reliable intercommunication of the 5 network nodes, part of the iron towers in T1 to T11 are selected as the relay nodes according to the tension paying-off relay networking rule. The tension paying-off relay networking rule is that when no obstacle affecting communication quality exists between the last network node (relay node) and the next network node (relay node), but the distance exceeds 3.2km, a plurality of relay devices are added on an iron tower between the two nodes, so that the distance between every two nodes is less than 3.2km; when the distance between the last network node (relay node) and the next network node (relay node) does not exceed 3.2km, butWhen an obstacle influencing the communication quality exists between the two nodes, relay equipment is added on a tower between the two nodes to bypass the obstacle. In this embodiment, since the board X is a mobile network node and has no influence on the relay networking rule and the relay adding rule, it only needs to consider that F is satisfied 1 、F 2 、T 5 And T 9 The 4 network nodes can communicate with each other, and the distance between every two network nodes in the 4 network nodes is considered to be more than 3.2km, and F 1 And F 2 、F 2 And T 5 There are obstacles (massively blocked signals) between two sets of adjacent network nodes that affect the quality of communication, and so at F 1 And F 2 Select iron tower T between 1 、T 4 As a relay node, at F 2 And T 5 Select iron tower T between 7 As a relay node, at T 5 And F 2 Select iron tower T between 11 As a relay node. In summary, the case is provided with 9 nodes, wherein there are 1 mobile network node, 4 fixed network nodes, and 4 fixed relay nodes, the relay networking mode is a minimum node mode, and if engineering needs meet the condition of the minimum node mode, relays and network nodes can be added at any position in a construction route.
Through the design of the embodiment, the user PC can download the operation interface software, the operation interface software can display the board walking state information, send the start, stop, low power consumption and calibration control commands of the monitoring system through the software and send the data request commands in a polling response mode, the data request commands and the control commands can be sent to the LoRa wireless data transmission radio station at the upper computer end through serial port wired communication, and then the LoRa wireless data transmission radio station at the board walking end is forwarded through the relay networking modules and sent to the micro control unit through the serial port; the system comprises a GNSS positioning module, a tilt sensor, a tension sensor, a micro control unit, an upper computer end LoRa wireless data transmission station, a plurality of relay networking modules and an upper computer end LoRa wireless data transmission station, wherein the GNSS positioning module is used for acquiring current longitude and latitude and real-time earth speed information of a walking board, the tilt sensor is used for acquiring walking board posture information comprising a turnover angle and a pitch angle, the tension sensor is used for acquiring tension applied to the walking board by a traction rope and four sub-wires, and the micro control unit transmits the processed residual electric quantity information of a lithium battery, the current position information of the walking board, the walking board posture information and stress information of the walking board to the LoRa wireless data transmission station at the walking board end through serial ports; the upper computer further processes the received data and displays the data in the operation interface software.
Realize the construction line and the request data command that set up in the long-range display control terminal monitoring software of walking board motion state monitoring system of tension unwrapping wire process, real-time acquisition walks the board and receives traction force, tension and walk the board gesture, walk information such as board real-time location and speed to data through the wireless transmission network upload to display control terminal monitoring interface that will gather and process handling, show simultaneously that control terminal can real-time control walk board monitoring system's mode: low power mode, start and stop, etc.
The power supply module is used for filtering, stabilizing voltage and limiting current of the output of the lithium battery and supplying power to each data acquisition module and the micro control unit; the data acquisition module comprises a GNSS positioning module, a tilt angle sensor, a battery electric quantity detection module and an improved tension sensor, and transmits the acquired walking board state information and the lithium battery information to the micro control unit; and data acquisition, control and transmission are carried out on each module according to the instruction of the monitoring software.
The adaptive display and control terminal can comprise an industrial flat plate, a wireless data transmission radio station and monitoring software; the user can set a construction route through the monitoring software, give commands such as starting, stopping, resetting, low power consumption, data correction and the like to the monitoring system, can access the operation monitoring software in real time to check the current state information of the running board, and gives an alarm when the running board is in a dangerous state.
This embodiment also provides an introduction to the following design details:
a star networking mode is adopted, one board state monitoring device corresponds to one control center and a plurality of state monitoring terminals, and the communication between the board state monitoring device and the state monitoring terminals is carried out in a timed polling alternate response mode, so that the timeliness and the accuracy of data communication of the two parts can be ensured, and the power consumption of the whole board system can be kept at a lower level;
the LoRa wireless communication module based on the spread spectrum technology is adopted for communication networking, so that the stability of wireless transmission is improved, and the situation of data packet loss is effectively reduced for complex terrains such as mountainous areas; the 433MHz frequency band is adopted, so that the transmission distance is longer, the penetration capability is strong, the diffraction capability is better, and the problem of communication obstruction caused by complex terrains such as mountains, hills and the like can be solved more pertinently; the modulation is carried out based on the spread spectrum technology, so that the data transmission has stronger anti-interference performance and higher concealment performance; in addition, the networking is easy to operate, and a subnet is added for monitoring by workers at any time and any place.
The improved novel tension sensor is designed, the external structure of the improved novel tension sensor is matched with the joint of the walking board and the rotary connector, the integration degree of a system is improved, the tension of a certain section of lead can be measured only by using the combination of one tension sensor and one rotary connector, and compared with the traditional method of using one tension sensor and two rotary connectors, the method has the advantages that the use of the rotary connectors is reduced, and the impulse error is reduced; the novel improved tension sensor can effectively avoid shaking generated in the tension paying-off process, is made of 42CrMo alloy steel, has the characteristics of sun protection and moisture prevention, and is very suitable for outdoor tension paying-off operation.
Mechanical design transformation is carried out on the basis of the new-type board of walking of improved generation, the embedded monitoring system of installation of being convenient for, the coaster is crossed to the board of being convenient for walk, the communication quality of wireless communication network is strengthened to the installation system antenna of being convenient for, the heat insulating board of laying, cooperation monitoring devices's full aluminium alloy shell for the system has compact, simple to operate, and heat dispersion is good, prevent wind spinning waterproof nature strong, and the scour protection hits the ability reinforce, has certain shielding design and electromagnetic compatibility.
For the whole board state monitoring system, the LM2596 switch voltage-stabilizing chip is used for supplying power, the switch power supply has the obvious advantages of low power consumption, the stability of the power supply voltage can directly influence the measurement precision of the improved novel tension sensor, the switch voltage stabilizing circuit can reduce the overall power consumption of the system and improve the working time of the system, and meanwhile, the advantages of simple peripheral circuit and high precision of output voltage of the linear voltage stabilizing circuit can be exerted.
In order to accurately amplify the differential signal output by the improved novel tension sensor for the singlechip to carry out AD conversion, an AD623 instrument amplifier is used, the instrument amplifier is an improvement of the differential amplifier, has the functions of inhibiting common-mode signals and amplifying differential-mode signals, has an input buffer, does not need input impedance matching, and has the advantages of very low direct current offset, low drift, low noise, very high open-loop gain, very large common-mode rejection ratio and high input impedance.
The present invention is not limited to the above preferred embodiments, and other various monitoring systems for the motion status of the traveling board during the tension paying-off process can be derived by anyone based on the teaching of the present invention.
Claims (7)
1. A walk board motion state monitoring system for tension unwrapping wire process which characterized in that:
a GNSS positioning module, a tilt sensor, a rotary connector with a tension detection function and a single chip microcomputer system which are connected with each other are arranged on the walking board;
the wireless module of the single chip microcomputer system is connected to a remote upper computer in a relay networking mode;
the traction force, the tension and the walking board posture on the walking board are collected in real time, the walking board is positioned in real time, the speed information is transmitted to the far end, and the working state of the walking board is monitored at the far end.
2. The walking board motion state monitoring system for tension pay-off process according to claim 1, wherein: the GNSS positioning module, the inclination angle sensor and the rotary connector with the tension detection function are respectively connected to the single chip microcomputer.
3. The walking board motion state monitoring system for tension pay-off process according to claim 1, wherein: a polystyrene heat insulation plate is laid in the inner space in the middle of the walking plate and used for arranging a walking plate state monitoring device consisting of a GNSS positioning module, a tilt angle sensor, a rotary connector with a tension detection function and a single chip microcomputer system; the board state monitoring device is provided with an aluminum alloy shell.
4. The walking board motion state monitoring system for tension pay-off process according to claim 1, wherein: the outer part of the rotary connector with the tension detection function adopts a 42CrMo alloy steel plate ring structure, and the bolt is matched with the aperture size of the connection part of the walking plates; the resistance strain gauge, the elastic sensitive element and the resistance measuring circuit module which are connected are arranged in the sensor.
5. The walking board motion state monitoring system for tension pay-off process according to claim 1, wherein: the relay networking adopts star networking communication; a wireless data transmission radio station is fixed on the running board, a wireless data transmission radio station is respectively placed in the tension field and the traction field, and a relay node is arranged on the iron tower on the basis of the principle that the shielded mountain tops are in the range of 2000m sight distance and non-sight distance.
6. The walking board motion state monitoring system for tension pay-off process of claim 5, wherein: the walking board is a traction four walking board, and the wireless data transmission radio station is a LoRa wireless transmission module.
7. The walking board motion state monitoring system for tension pay-off process according to claim 3, wherein: one board state monitoring device corresponds to one control center and a plurality of state monitoring terminals; the communication between the board state monitoring device and the state monitoring terminal is carried out by adopting a mode of timing polling alternate response.
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| CN202210807856.4A CN115190376A (en) | 2022-07-11 | 2022-07-11 | A walk board motion state monitoring system for tension unwrapping wire process |
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| CN202210807856.4A CN115190376A (en) | 2022-07-11 | 2022-07-11 | A walk board motion state monitoring system for tension unwrapping wire process |
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