CN111059996A - Comprehensive pipe rack health monitoring system based on ZigBee technology - Google Patents
Comprehensive pipe rack health monitoring system based on ZigBee technology Download PDFInfo
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- CN111059996A CN111059996A CN201910628171.1A CN201910628171A CN111059996A CN 111059996 A CN111059996 A CN 111059996A CN 201910628171 A CN201910628171 A CN 201910628171A CN 111059996 A CN111059996 A CN 111059996A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- 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 comprehensive pipe gallery health monitoring system based on a ZigBee technology, which comprises a plurality of data acquisition nodes, a coordinator node and a computer, wherein the data acquisition nodes are divided into strain acquisition nodes and displacement acquisition nodes, and part of the data acquisition nodes have a routing function. The ZigBee network adopts a tree structure, and the data acquisition nodes are in wireless direct communication or route communication with the coordinator nodes. The coordinator node can be connected with a computer through a USB to upload data, and can also be used as a handheld display terminal for independent use. The system can determine the local settlement degree of the comprehensive pipe rack and the stress condition of the pipeline by monitoring the vertical deformation of the pipeline and the vertical stress deformation of the pipeline bracket in the comprehensive pipe rack. Through the monitoring to local settlement displacement, horizontal displacement, axial displacement between utility tunnel festival and the festival movement joint, can judge the inhomogeneous deformation of utility tunnel structure. The system and the data acquisition node adopt a plurality of low-power consumption designs and use batteries for power supply.
Description
Technical Field
The invention relates to the technical field of comprehensive pipe gallery monitoring, in particular to a comprehensive pipe gallery health monitoring system based on a ZigBee technology.
Background
In recent years, with the rapid development of urbanization construction, the scale of cities is continuously enlarged, and meanwhile, the construction and perfection of infrastructure and public facilities need to be continuously developed, wherein the construction of a comprehensive pipe rack is rapidly developed, and a large number of policies are issued in succession by countries and places to support the construction of the comprehensive pipe rack. Different from the traditional pipeline burying mode, the comprehensive pipe gallery is a special underground city pipeline comprehensive corridor for construction, integrates various engineering pipelines such as electric power, communication, gas, heat supply, water supply and drainage and the like, implements unified planning, design and construction and management, and is an important infrastructure and a 'life line' for guaranteeing city operation. The utility tunnel construction has greatly made things convenient for inspection, maintenance and the maintenance of municipal pipeline facility, though the cost that once only invests in and is higher than the pipeline independently to lay, has reduced the expense of many times of road surface renovation and the maintenance cost of engineering pipeline, also avoids because lays and maintains that pipeline frequently excavates the road and causes the influence to traffic and resident's trip, guarantees the integrality and the durability on road surface.
The utility tunnel engineering is generally constructed by adopting an integral cast-in-place reinforced concrete structure form or a prefabricated reinforced concrete splicing method, deformation joints are usually required to be arranged in the specific construction process, the length of each section of box culvert is increased as much as possible, and the number of the deformation joints is reduced. Rubber and two-component polysulfide sealant and polyethylene are commonly adopted between pipe gallery joints and joint deformation joints for low foaming joint filling, so that the sealing performance of the deformation joints is ensured, and leakage is prevented.
The geological environment geological conditions of the position of the comprehensive pipe gallery are different, and the structure is not uniformly deformed such as nonuniform local settlement, horizontal displacement and axial displacement under the action of environmental load, wherein the structure comprises multiple factors such as soil type, soil property, soil state and moisture content. These problems not only cause the deformation joint to crack and leak, seriously weaken the applicability and durability of the concrete pipe gallery, but also can generate additional stress and deformation to various pipelines in the pipe gallery to cause adverse effects. The problems should be timely found and timely processed, so that unnecessary loss caused by expansion of the problems is avoided.
At present utility tunnel monitoring system monitors environmental parameter and conflagration mainly, and the environmental parameter of monitoring mainly includes environment humiture, oxygen content, hydrogen sulfide concentration, methane concentration etc. and the conflagration monitoring mainly detects through smog and realizes, and monitoring system adopts distributed data acquisition system more, adopts wired transmission mode. Aiming at monitoring the structural parameters of the comprehensive pipe rack, the main parameters are the dislocation displacement of the deformation joint between the pipe rack joints caused by local settlement, a non-electronic measurement method is mostly adopted, the method is generally manual detection, the real-time performance is poor, and manpower and material resources are wasted. The dislocation and the displacement of the structural deformation joint are monitored by an electronic measuring system, and the system adopts a distributed data acquisition wired data transmission mode, so that the construction and installation are complex, and the system cost and the labor cost are high.
Disclosure of Invention
In view of the problems, the invention aims to provide a comprehensive pipe gallery health monitoring system based on the ZigBee technology, wherein parameters of deformation of a steel pipeline and stress deformation of a pipeline support in a comprehensive pipe gallery are detected through a data acquisition node, displacement parameters between joints of the comprehensive pipe gallery and a joint deformation joint are detected, and the parameters are transmitted to a coordinator and a computer through a ZigBee wireless sensor network for monitoring, so that the structural health condition of the comprehensive pipe gallery and the running state of important pipelines are determined.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a ZigBee wireless sensor network is adopted to transmit data, and the network adopts a tree structure; the system comprises a plurality of sensors, data acquisition nodes, a coordinator node and a computer, wherein the data acquisition nodes are divided into strain acquisition nodes and displacement acquisition nodes; one part of the data acquisition nodes has a routing function, the data acquisition nodes and the coordinator nodes can be directly and wirelessly connected and communicated in a wireless communication range, and the data acquisition nodes exceeding the communication range can be connected and communicated with the coordinator through other data acquisition node routes; the coordinator node can be connected with a computer through a USB (universal serial bus), and transmits the acquired strain and displacement data to the computer; the coordinator node can also be used as a handheld display terminal for independent use; the coordinator node and the computer screen can monitor uploaded displacement and strain parameters, and the system is as shown in figure 1.
Furthermore, a resistance strain gauge sensor is adopted for strain detection of the strain acquisition node.
Furthermore, a pull rope potentiometer displacement sensor is adopted for displacement detection of the displacement acquisition node.
Further, the resistance strain gauge sensor detects deformation of a steel pipeline and stress deformation of a pipeline support in the comprehensive pipe gallery, and converts the deformation of the pipeline and the stress deformation of the support into the change of the resistance of the strain gauge; displacement sensor is to the measuring of displacement between utility tunnel festival and the festival movement joint, converts the displacement volume into potentiometer resistance change.
Furthermore, the data acquisition node adopts a low-power-consumption design, and can work for a long time by being powered by a battery; the coordinator node is powered by a battery, and can also be powered by a computer through a USB interface.
Further, a block diagram of the strain acquisition node is shown in fig. 2, the strain acquisition node is a 4-channel strain data acquisition unit and comprises a 4-channel strain transformation unit, a microprocessor unit, an antenna matching unit, a power supply electronic switch unit, a 3.3V power supply unit and a battery unit; the microprocessor unit adopts CC 2530; the strain conversion unit converts the voltage output by the resistance strain gauge full-bridge circuit into a standard voltage signal, then the standard voltage signal is converted into a digital quantity by a CC2530 internal integrated AD converter, and the digital quantity is processed and stored in an internal flash; the microprocessor can wirelessly transmit the data to the coordinator node by the antenna matching unit; the strain acquisition node is powered by a battery unit; the 3.3V power supply unit provides stable voltage for the microprocessor unit; the power supply electronic switch unit is controlled by the microprocessor unit, and the strain conversion unit and the full-bridge circuit power supply of the strain gauge sensor are switched on only during data acquisition.
Furthermore, a block diagram of the displacement acquisition node is shown in fig. 3, and the displacement acquisition node is used for 3-channel displacement data acquisition and comprises a 3-channel displacement conversion unit, a microprocessor unit, an antenna matching unit, a power supply electronic switch unit, a 3.3V power supply unit and a battery unit; the microprocessor unit adopts CC 2530; the displacement conversion unit converts the voltage output by the displacement sensor potentiometer into a standard voltage signal, and then the standard voltage signal is converted into a digital quantity by the CC2530 internal integrated AD converter and stored in an internal flash after being processed; the microprocessor can wirelessly transmit the data to the coordinator node by the antenna matching unit; the displacement acquisition node is powered by a battery unit; the 3.3V power supply unit provides stable voltage for the microprocessor unit; the power supply electronic switch unit is controlled by the microprocessor unit and is connected with the displacement conversion unit and the displacement sensor power supply only during data acquisition.
Further, the coordinator node is composed of a block diagram as shown in fig. 4, and includes a microprocessor unit, a TFT color display unit, a data storage unit, an antenna matching unit, a keyboard unit, a USB interface unit, a power supply unit, and a battery unit; the microprocessor unit adopts CC 2531; the microprocessor unit wirelessly receives strain and displacement data acquired by each acquisition node through the antenna matching unit and stores the strain and displacement data in the data storage unit; the TFT color display unit can display the current values and the historical values of strain and displacement data and a change trend line, and when the strain and displacement data variation of each acquisition point exceeds a certain numerical value, the TFT color display unit can display the strain and displacement data in a reminding manner; the keyboard unit can set working parameters and control working modes; the microprocessor unit can be connected with a computer through a USB interface unit and uploads the data of the acquisition points; the coordinator node is powered by a battery unit and can also be powered by a computer through a USB interface; the power supply unit provides stable voltage for each unit to use, and the battery power of detection can show on TFT color display unit, can charge to battery unit through external charging source when insufficient voltage.
Furthermore, the computer can receive strain and displacement data collected by each collection node through a USB interface when the network is connected, and realize data processing, display, storage and analysis.
Further, utility tunnel health monitoring system based on zigBee technique, when need not upload data at the coordinator node for saving the electric energy, whole network is in the off-line state, and the data acquisition node is in the dormant state when out of work this moment, is awaken up to switch to operating condition collection and storage data when needs regularly gather data, later gets into the dormant state again. When the coordinator node needs to upload the monitoring data, the coordinator node wakes up each data acquisition node to reorganize into a network.
Compared with the prior art, the invention has the beneficial effects that:
(1) the data acquisition node can complete signal transmission, data acquisition and data wireless transmission, and the system and the node have the advantages of simple structure, low manufacturing cost, stable performance and higher cost performance.
(2) According to the invention, the ZigBee wireless sensor network is adopted, and signal lines are not required to be laid, so that the working intensity and the workload of personnel are greatly reduced, and the labor cost is reduced.
(3) The ZigBee wireless sensor network is adopted, so that common mode and differential mode interference of the transmission line is eliminated and reduced, and the transmission quality of signals is improved.
(4) The invention adopts the wireless transmission of the distributed data acquisition, so that the system has good maintainability.
(5) The data acquisition node adopts a low-power-consumption design, has extremely low running power consumption, is powered by a battery, and can work for a long time without an AC220V power supply.
(6) According to the invention, the deformation of the structure is judged by collecting the displacement parameters between the sections of the comprehensive pipe rack and the section deformation joints, the structural settlement is comprehensively judged by collecting the parameters of the deformation of the pipeline and the stressed deformation of the pipeline support in the comprehensive pipe rack, and the stress condition of the important pipeline is judged at the same time.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a block diagram of a strain acquisition node according to the present invention;
FIG. 3 is a block diagram of the displacement acquisition node of the present invention;
FIG. 4 is a block diagram of a coordinator node according to the present invention;
FIG. 5 is a circuit diagram of a strain acquisition node of the present invention;
FIG. 6 is a circuit diagram of a displacement acquisition node of the present invention;
fig. 7 is a circuit diagram of a coordinator node according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
In this embodiment, because the steel pipe has certain rigidity in the utility tunnel, can not follow utility tunnel local settlement isotructure deformation completely, consequently the settlement of pipe gallery warp and must change pipe support's the atress condition, unsettled phenomenon can appear in some supports even. Through the detection and analysis of the deformation of the pipeline in the vertical direction and the stress parameter change condition of the pipeline support in the vertical direction, the local settlement degree of the comprehensive pipe gallery and the stress change condition of the pipeline can be judged. Pipeline deformation in the utility tunnel detects and realizes through pasting the strain sensor on the pipeline outer wall, and a set of full-bridge circuit that meets an emergency that constitutes about the position that needs to detect detects the deformation of vertical direction, and both sides a set of full-bridge circuit that meets an emergency that constitutes detects the deformation in the horizontal direction. The detection of the stress deformation parameters of the pipeline support is realized by a strain sensor which is stuck on the pipeline support, and the stress condition acting on the pipeline support in the vertical direction is determined mainly by detecting the deformation of the pipeline support.
In the embodiment, the strain sensor of the strain acquisition node is a metal resistance type strain gauge, and in order to improve stability and output sensitivity and reduce power consumption, a high resistance strain gauge is selected and used, and the model is BF1K-3 AA; resistance value (R): 1002 +/-0.1 omega; sensitivity coefficient: 2.0 +/-1%.
In this embodiment, a circuit diagram of the strain acquisition node is shown in fig. 5, where 4 sets of strain full-bridge power supplies adopt an ultra-low power consumption series voltage reference, the model is MAX6129, and the quiescent current is only 5.25 uA. The strain gauge full-bridge circuit outputs a strain conversion unit circuit connected to a strain acquisition node to convert the strain conversion unit circuit into a standard voltage signal, and a single-power-supply micro-power-consumption precision instrument amplifier INA333 is adopted as an amplification conversion circuit and is configured into two gains of 500 and 1000 according to different measurement objects. As a core for acquisition and control, a unit circuit of the microprocessor adopts a ZigBee special control chip CC2530 developed by TI company, an 8051 kernel single chip microcomputer system and a 2.4GHz IEEE 802.15.4/ZigBee standard wireless radio frequency transceiving system are integrated in the CC2530, the microprocessor is an 8-bit high-performance low-power-consumption microprocessor, has five different operation power supply modes, and has extremely low power consumption in a sleep state. An 8-path input 12-bit ADC with configurable resolution is integrated in the CC2530, and the conversion precision meets the requirement of the dependent variable acquired by the system. The SRAM and the nonvolatile program memory which are integrated inside the strain sensor are used for storing collected strain data besides program codes. The CC2530 is connected to a radio frequency antenna through an antenna matching unit circuit, and wireless transceiving is achieved. The main switch of the power electronic switch unit circuit adopts a P-channel MOS field effect transistor, and the power of the strain full-bridge circuit and the conversion unit circuit is switched on only when data is acquired. The node internal power supply unit circuit adopts a low-dropout low-power-consumption linear power supply circuit HT7333, the quiescent current is only 4uA, and the battery voltage is converted into +3.3V voltage for the CC2530 unit circuit to use. Because the strain acquisition node adopts a low-power consumption design, the strain acquisition node is powered by a battery, the strain acquisition node without a routing function adopts a high-energy LR6 AA 1.5V battery, the battery capacity is 2000mAH, and 3 nodes are serially connected and placed in a battery box. The dependent variable acquisition nodes with the routing function cannot enter a dormant state during networking, a 18650 type 4.2V lithium battery is adopted, and the parallel capacity of 3 nodes is 6600 mAH.
In the embodiment, the displacement detection of the displacement acquisition node can adopt a self-recovery pull rope displacement sensor of a conductive plastic potentiometer, and the model is WPS-S; linear precision: (precision type) 0.05% -0.08% FS; repetition precision: 0.01% FS to 0.005% FS.
In this embodiment, the detection of the displacement parameters between the utility tunnel joint and the joint deformation joint is realized by a displacement sensor. Whether the utility tunnel structure takes place local settlement and deformation can be confirmed through measurement and analysis of dislocation displacement between utility tunnel festival and the festival movement joint.
In this embodiment, the displacement of the vertical direction tube coupling dislocation that produces is fixed stay cord displacement sensor one end in the top movement joint one side of piping lane, and the other end is fixed on movement joint opposite side bottom pipe wall to the detection piping lane local settlement. The detection of the horizontal dislocation displacement of the pipe gallery is realized by fixing one end of a pull rope displacement sensor at one side of a deformation joint of the inner wall of the pipe gallery and fixing the other end of the pull rope displacement sensor on the pipe wall at the other side of the deformation joint. The axial displacement checking method is similar. When the pull rope type sensor is used for detecting displacement, the distance between the two fixed ends is far, so that the mutual influence among three axial displacements can be effectively reduced.
In this embodiment, a circuit diagram of the displacement collection node is shown in fig. 6, in which 3 sets of displacement sensor power supplies adopt an ultra-low power consumption serial voltage reference, and the same model is MAX 6129. The voltage signal output by the displacement sensor is connected to a displacement conversion unit circuit of the displacement acquisition node for impedance conversion, and a following impedance conversion circuit consisting of a single-power-supply operational amplifier LM358 is adopted. The displacement acquisition node microprocessor unit circuit, the power supply electronic switch unit circuit, the antenna matching unit circuit and the battery unit circuit are the same as the strain acquisition node.
In this embodiment, a coordinator node circuit diagram is shown in fig. 7, a CC2531 used by a microprocessor is a ZigBee dedicated control chip developed by TI, and a USB dedicated controller is added on the basis of the CC2530 to support full-speed operation, and the transmission rate is up to 12 Mbps. The CC2531 can be connected with a computer through a USB interface unit circuit, and high-speed data transmission between the coordinating point and the computer is realized. The CC2531 is internally provided with a USART0 which is configured as an SPI bus, and the data storage unit adopts a 1 Mx 8-bit low-power-consumption SRAM storage chip SST25VF010 which is connected with the CC2531 through the SPI bus. USART1 is configured as a serial asynchronous communication interface through which TFT color display cells are connected to CC 2531. The TFT color display unit adopts a model TJC8048X550_011N (no touch) 5-inch display module, and the display resolution is 800 multiplied by 480 pixels; electrical appliance performance parameters: the typical value of the working voltage is 5V, and the working current of 5V is 240 mA-170 mA; interface performance parameters: USART serial interface, maximum baud rate 921600bps, interface level 3.3V/5V TTL level. In order to adapt to the severe outdoor environment, a film keyboard is adopted for parameter setting and function selection. The coordinator node is powered by a battery unit, the battery unit is connected to a power supply unit through a switch, the battery unit adopts four IFR26650 type 3.2V lithium iron phosphate batteries, two batteries are connected in series and then connected in parallel, and the capacity is 6400 mAH. The power supply unit includes a 5V power supply and a 3.3V power supply. The 5V power supply circuit adopts a high-efficiency DC/DC converter formed by MC34063 to convert the battery voltage into +5V voltage for the TFT color display unit. The 3.3V power supply circuit adopts a low-dropout low-power linear power supply circuit TH7333 to convert the +5V voltage into +3.3V voltage for the digital circuit to use. The power supply by the USB can be switched by a switch when the USB is connected with a computer. The CC2531 detects the electric quantity of the battery and displays the electric quantity on the TFT color display unit, and the battery can be charged through an external charging power supply when the electric quantity is insufficient.
In this embodiment, the deformation of the utility tunnel structure, the deformation of the pipeline and the deformation of the pipeline support due to stress are slow processes, so the data acquisition speed can be once every 1 hour or even 24 hours. The health condition of the pipe gallery does not need real-time monitoring generally, and the coordinator node and the data acquisition node are connected and organized into a network only at regular intervals, and history and current data are uploaded for monitoring, analyzing and storing.
In the embodiment, in order to prolong the service time of the battery, the data acquisition node is in a dormant state when not working, is awakened to be switched to a working state when the stored data needs to be acquired regularly, and enters the dormant state after one-time data acquisition. The data acquisition nodes with the routing function only acquire and store data regularly in the network disconnection state as the data acquisition nodes without the routing function. When the connection networking is needed to transmit data, all the data acquisition nodes are awakened and reorganized into a network.
In this embodiment, the utility tunnel helps wireless signal transmission, can place a data acquisition node that has the routing function 300m interval. Still should lay a data acquisition node that has the routing function in utility tunnel turn and maintenance mouth lower extreme. When the monitoring data is required to be uploaded, the coordinator node and each data acquisition node can be connected in a networking mode at the ground maintenance opening. The coordinator node can be used as a handheld display terminal for independent use, can also be connected with a computer through a USB, and transmits the collected historical strain and displacement data and the current data of the comprehensive pipe gallery to the computer for display, storage, processing and analysis.
In the embodiment, the coordinator node display interface comprises historical data of each acquisition point and a current data table display interface; data change trend line interfaces of all acquisition points; and when the acquired data variation exceeds a set value, the data is uniformly displayed on a monitoring result analysis interface. The computer can save and process the collected data, display the collected data in the form of table, changing trend line, etc. on the monitoring interface, and display the pipe gallery and pipe condition visually in the form of analog graph with pseudo color.
In this embodiment, through the above-mentioned detection to the change condition of steel pipeline deformation and pipeline bracket atress, through the detection to displacement parameter between above-mentioned utility tunnel festival and the festival movement joint, can evaluate the health status of utility tunnel through comprehensive analysis.
The technical solutions of the present invention or those skilled in the art, based on the teaching of the technical solutions of the present invention, should be considered to be within the scope of the present invention, and all equivalent changes and modifications made within the scope of the present invention or equivalent technical solutions designed to achieve the above technical effects are also within the scope of the present invention.
Claims (10)
1. The utility model discloses a comprehensive pipe gallery health monitoring system based on ZigBee technology, which is characterized by comprising a plurality of data acquisition nodes, a coordinator node and a computer; the data acquisition nodes are divided into strain acquisition nodes and displacement acquisition nodes, and part of the data acquisition nodes have a routing function; the ZigBee network adopts a tree structure, and the data acquisition node is in wireless direct communication or route communication with the coordinator node; the coordinator node can be connected with a computer through a USB to upload data, and can also be used as a handheld display terminal for independent use; the data acquisition node adopts a low-power consumption design and can work for a long time by being powered by a battery; the coordinator node is powered by a battery, and can also be powered by a computer through a USB interface.
2. The utility tunnel health monitoring system based on ZigBee technology of claim 1, wherein the strain acquisition nodes are 4 channels, and comprise 4 paths of strain transformation units, a microprocessor unit, an antenna matching unit, a power electronic switch unit, a 3.3V power supply unit and a battery unit; the microprocessor unit adopts CC 2530; the strain conversion unit converts the output voltage of the full-bridge circuit of the resistance strain gauge into a standard voltage signal, then the standard voltage signal is converted into a digital quantity by a CC2530 internal integrated AD converter, the digital quantity is stored in an internal flash after processing, and the digital quantity can be transmitted to a coordinator node through wireless transmission; the strain acquisition node is powered by a battery; the microprocessor unit is powered by a 3.3V power supply unit.
3. The utility tunnel health monitoring system based on ZigBee technology of claim 1, wherein the displacement collection node is 3 channels, comprising 3 paths of displacement transformation units, a microprocessor unit, an antenna matching unit, a power electronic switch unit, a 3.3V power supply unit and a battery unit; the microprocessor unit adopts CC 2530; the displacement conversion unit converts the output voltage of the displacement sensor potentiometer into a standard voltage signal, then the standard voltage signal is converted into a digital quantity by a CC2530 internal integrated AD converter, the digital quantity is stored in an internal flash after being processed, and the digital quantity can be transmitted to a coordinator node through wireless transmission; the displacement acquisition node is powered by a battery; the microprocessor unit is powered by a 3.3V power supply unit.
4. The utility tunnel health monitoring system based on ZigBee technology of claim 1, wherein the coordinator node is composed of a microprocessor unit, a TFT color display unit, a data storage unit, an antenna matching unit, a keyboard unit, a USB interface unit, a power supply unit, and a battery unit; the microprocessor unit adopts CC 2531; the TFT color display unit, the data storage unit and the USB interface unit are connected with the microprocessor unit; the antenna matching unit is connected with the microprocessor unit and the radio frequency antenna; the output end of the keyboard unit is connected with the input end of the microprocessor unit; the battery unit is connected with the power supply unit through the switch.
5. The utility tunnel health monitoring system based on ZigBee technology of claim 1, wherein said strain acquisition node and displacement acquisition node adopt a variety of low power consumption devices for saving electric energy, including ultra-low power consumption voltage reference MAX6129, micro power consumption precision instrument amplifier INA333, low-dropout low power consumption linear power supply circuit HT 7333.
6. The utility tunnel health monitoring system based on ZigBee technology of claim 1, wherein the power electronic switch units of the strain acquisition node and the displacement acquisition node are only switched on the strain conversion unit and the strain sensor full-bridge power supply and the displacement conversion unit and the displacement sensor power supply during data acquisition.
7. The utility tunnel health monitoring system based on ZigBee technology of claim 1, wherein the strain detection of the strain acquisition nodes adopts a resistance strain gauge sensor for the detection of pipe deformation and pipe bracket stress deformation parameters in the utility tunnel.
8. The utility tunnel health monitoring system based on zigBee technique of claim 1, characterized in that what displacement acquisition node displacement detected adopted is stay cord potentiometre displacement sensor for the detection of displacement parameter between utility tunnel festival and the festival movement joint.
9. The utility tunnel health monitoring system based on zigBee technique of claim 1, characterized in that, strain acquisition node can judge utility tunnel structure local settlement degree and the stress condition of pipeline through the monitoring to steel pipeline vertical direction deformation and the pipeline bracket vertical direction atress situation of change in the utility tunnel.
10. The ZigBee technology based comprehensive pipe gallery health monitoring system of claim 1, wherein each data acquisition node transmits strain, displacement historical data and current data to a coordinator node and displays the data in the form of a table and a variation trend line on a TFT screen; the computer can be connected with the coordinator node through the USB interface to upload collected data for displaying, storing, processing and analyzing, and the display interface can also visually display the comprehensive pipe gallery structure and the pipeline deformation condition in a simulated diagram form by using pseudo colors.
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| CN112540583A (en) * | 2020-12-02 | 2021-03-23 | 武汉德威工程技术有限公司 | Operation monitoring system based on heat supply network |
| CN113552827A (en) * | 2021-07-21 | 2021-10-26 | 佛山市三水燃气有限公司 | Remote intelligent monitoring device for gas pipe settlement and working method thereof |
| WO2023011566A1 (en) * | 2021-08-05 | 2023-02-09 | 中智城(苏州)工程设计咨询服务有限公司 | Method and system for generating state of health of road integrated pole system |
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| WO2023011566A1 (en) * | 2021-08-05 | 2023-02-09 | 中智城(苏州)工程设计咨询服务有限公司 | Method and system for generating state of health of road integrated pole system |
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Application publication date: 20200424 |