CN109632122A - Suspension bridge strand temperature automatic measurement system and Internet of Things measurement and control of temperature platform including it - Google Patents
Suspension bridge strand temperature automatic measurement system and Internet of Things measurement and control of temperature platform including it Download PDFInfo
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- CN109632122A CN109632122A CN201811101819.1A CN201811101819A CN109632122A CN 109632122 A CN109632122 A CN 109632122A CN 201811101819 A CN201811101819 A CN 201811101819A CN 109632122 A CN109632122 A CN 109632122A
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
Abstract
The present invention discloses suspension bridge strand temperature automatic measurement system, the temperature of the different location of its main cable strand for being used to measure suspension bridge, the suspension bridge include suspension cable (1), Sarasota (2), anchorage (3), sunpender (4) and bridge floor (5).The suspension bridge strand temperature automatic measurement system includes temperature measuring device (11) and data acquisition control device (12), wherein, the temperature measuring device (11) includes temperature probe, temperature control module, Lora wireless transport module and the first power supply；The data acquisition control device (12) can carry out unified standardization processing to the data information of the temperature measuring device (11), and collected temperature information can be saved in the background data base.Mistake river strand beam is divided into 9 sections to be monitored, wherein each 5 temperature values of strand beam cross-section monitoring, ensure that measurement accuracy and reliability.The technical effects of the invention are that carrying out precise measurement to suspension bridge strand temperature.
Description
Technical field
The present invention relates to suspension bridge strand temperature automatic measurement systems, and the invention further relates to the Internet of Things temperature surveys including it
Control platform.
Background technique
Suspension bridge
Suspension bridge also known as suspension bridge (suspension bridge) refer to hung and be anchored in by Sarasota two sides (or
Bridge both ends) bridge of the cable (or steel chain) as the main supporting member of superstructure.Its cable geometry by power balance
Conditional decision, normally close to parabola.It hangs down many sunpenders from cable, bridge floor is hung, set up and set between bridge floor and sunpender
Stiff girder forms combined system with cable, to reduce deflection deformation caused by load.
Maximum power is the pressure in the tension and pylon in suspension cable in suspension bridge.Since pylon is not substantially by lateral
Power, its structure can be made quite very thin, and furthermore there are also certain stabilizations to pylon for suspension cable.If ignoring when calculating
If the weight of suspension cable, then suspension cable forms a parabola.The process for calculating suspension bridge so just becomes very simple.Always
The suspension cable of suspension bridge be usually iron chains or the iron rod being linked togather.Modern suspension cable is usually the high tensile steel wire of multiply.
The make of suspension bridge is to be invented 19 beginnings of the century, and many bridges use this frame mode.Modern suspension cable
Bridge is evolved by cable bridge.Based on large span and super-large span highway bridge, current Longspan Bridge uses the scope of application entirely
This structure.It is the principal mode of Large Span Bridges.
Suspension bridge is the bridge of cable to bear pulling force or chain cable as main supporting member, by suspension cable, Sarasota, anchor
The part such as heavy stone used as an anchor, sunpender, bridge deck forms.The main supporting member of suspension bridge is suspension cable, it is primarily subjected to pulling force, generally uses tension
The high steel of intensity (steel wire, wirerope etc.) production.Since suspension bridge can make full use of the intensity of material, and there are materials to save,
The characteristics of from heavy and light, therefore span ability of the suspension bridge in various system bridges is maximum, across footpath can achieve 1000 meters or more.
Strand
Strand is that product is commonly used in suspension bridge bridge construction, for carrying bridge weight.
Strand temperature
The entire construction stage of suspension bridge is influenced to Sunshine Temperature Difference Effect in strand installation process in bridge construction, it is excessive
Coordinate when will lead to Sarasota and main push-towing rope coordinate and design basis temperature is generated relatively large deviation by the temperature difference, to influence entire master
The sag of cable and linear deviation design value.
Accurate analysis temperature effect, the changing value that real-time monitoring adjustment causes main cable strand linear because of temperature change, to guarantor
Card main cable erection precision plays the role of particularly important.Quite sensitive, the stringent temperature of the linear variation to temperature of main rope of suspension bridge
Degree test and accurately calculating amendment are to ensure that the key of main cable erection precision.
Temperature gradient
Temperature gradient (temperature gradient) is temperature in nature, water temperature or the soil moisture with land height
Or waters and depth of soil variation and the step increments that occur or the phenomenon that successively decrease.It is description temperature in specific regional environment
Where inside most rapid variation is can be to and being the physical quantity of which kind of rate.
Temperature gradient is one-dimensional quantity, and unit is (Fahrenheit) degree/per unit length Celsius (in specific temperature range
It is interior), it is every meter of K (K/m) with SI unit.Temperature gradient is a vector, usually using the increased direction of temperature as positive direction.
Temperature measuring device
Temperature measuring instrument can be divided into contact and contactless two major classes by thermometric mode.
Usually contact temperature-measuring instrument is fairly simple, reliable, and measurement accuracy is higher；But because of temperature element and tested Jie
Matter needs to carry out sufficient heat exchange, and side needs the regular hour to can be only achieved thermal balance, so there are the delay phenomenon of thermometric,
It is limited simultaneously by heat-resisting material, may not apply to very high temperature measurement.
Contactless instrument thermometric is that temperature is measured by heat radiation principle, and temperature element is not required to connect with measured medium
Touching, temperature-measuring range is wide, is not limited by the thermometric upper limit, and the temperature field of testee will not be destroyed, and reaction speed generally also compares
Comparatively fast；But it is influenced by extraneous factors such as the emissivity of object, measurement distance, flue dust and aqueous vapors, measurement error is larger.
LoRa wireless telecommunications
LoRa is one of LPWAN communication technology, is that one kind that Semtech company, the U.S. uses and promotes is based on spread spectrum
The overlength distance wireless transmission scheme of technology.This scheme changes the compromise consideration side about transmission range and power consumption in the past
Formula provides one kind for user and is simply able to achieve remote, long battery life, large capacity system, and then extends sensing network.
Currently, LoRa is mainly run in global free frequency range, including 433,868,915MHz etc..
LoRa technology have remote, low-power consumption (battery life is long), multinode, low cost characteristic.
LoRaWAN is the low-power consumption wide area network (Low for the mac-layer protocol based on open source that LoRa alliance releases
Power Wide Area Network, LPWAN) standard.This technology can be provided for battery powered wireless device local,
The network in the whole nation or the whole world.What LoRaWAN was aimed at is some core demands in Internet of Things, as secure two-way communication, movement are logical
The service such as news and static position identification.The technology is not necessarily to local complex configurations, so that it may allow between smart machine and realize seamless interfacing
Interoperability, to the user of internet of things field, developer and freedom of enterprise operating right.
The LoRaWAN network architecture is a typical star topology, and in this network architecture, LoRa gateway is
The relaying of one transparent transmission connects terminal device and rear end central server.It is connected between gateway and server by standard IP,
Terminal device is using single-hop and one or more gateway communications.It is two-way communication between all nodes and gateway, while also props up
The operations such as cloud upgrading are held to reduce cloud communication time.
LoRa provides the link budget of maximum 168dB with its exclusive patented technology.In general, wireless in city
Distance range is 1-2 kilometers, and in suburb, wireless distances reach as high as 20km.
Patent document CN107687909A discloses a kind of this cable temperature monitoring system based on Intelligent internet of things, a temperature
The corresponding one group of RFID temperature label of collector is spent, each RFID temperature label in each group RFID temperature label is respectively arranged to be measured
At the monitoring location of cable, through-hole is offered in the middle part of flexible insulating substrate, heat-conducting metal block is embedded in the through-hole, is surveyed
Warm chip is in contact with heat-conducting metal block, and thermometric chip is connected with ultrahigh frequency RFID chip, antenna and ultrahigh frequency RFID chip
It is connected, and antenna is located on flexible insulating substrate；Antenna in every group of RFID temperature label in each RFID temperature label with it is right
The temperature sampler answered is connected, and the output end of each temperature sampler is connected with convergence controller, which can be realized ditch
The passive and wireless temperature monitoring of road inner cable.
Patent document CN207050867U discloses a kind of temperature alarming device based on LoRa Internet of Things transmission technology, including
Several LoRa gateway routers, temperature alarming managing main frame, cellular base station, temperature alarming management user, several have disposed
Temperature alarming and LoRa communication device inside tested article.Wherein, it is deployed in whole region and is deployed in measured object
Several temperature alarmings and LoRa communication device inside product, including control module, temperature sensing module, LoRa communication module,
Power module, voice alarm module.The technical effect of the utility model is: not only structure realizes base simplely but also economical and practical
In the function of the temperature alarming of LoRa Internet of Things transmission technology, be able to satisfy inexpensive large-scale deployment, but can apply it is long away from
From the scene with low-power consumption.
Patent document CN101393576A discloses the method for eliminating that cable-stayed bridge tune Suo Wendu and temporary load(ing) influence, and is related to tiltedly
Cable power adjustment technology specially eliminates the method for adjusting Suo Wendu and temporary load(ing) to influence.Using the long difference of rope as tune rope
Foundation comprises the concrete steps that Cn inclined cable length and Suo Li, elastic elongation before calculating tune rope, inclined cable length is subtracted elasticity and is stretched
Length obtains original length before tune rope, and the original length of the Cn suspension cable of cable-stayed bridge, former before and after adjusting after same calculating tune rope
Beginning length is subtracted each other, and the original length difference of suspension cable is obtained, and original length difference as the unpluging amount of Cn suspension cable or is returned
Contracting amount carries out tune rope.By the present invention, temperature and temporary load(ing) it can guarantee the essence of suspension cable tune rope in the case where changing at the scene
Degree.The present invention solves the problems, such as that temperature and temporary load(ing) generate error for adjustment Suo Li, can filter out construction site
The error that temperature field and temporary load(ing) variation generate adjustment Suo Li.
Technical problem
The temperature of each measuring control point of accurate measurement main cable strand.
Strand is that product is commonly used in suspension bridge bridge construction, for carrying bridge weight.Strand is pacified in bridge construction
Sunshine Temperature Difference Effect influences the entire construction stage of suspension bridge during dress, the excessive temperature difference will will lead to Sarasota and main push-towing rope coordinate with
Coordinate when design basis temperature generates relatively large deviation, to influence the sag and linear deviation design value of entire main push-towing rope.
Accurate analysis temperature effect, the changing value that real-time monitoring adjustment causes main cable strand linear because of temperature change,
Play the role of to guarantee main cable erection precision particularly important.The linear variation to temperature of main rope of suspension bridge is quite quick
Sense, stringent temperature test and accurately calculating amendment are to ensure that the key of main cable erection precision.
Summary of the invention
For this purpose, the present invention proposes suspension bridge strand temperature automatic measurement system, temperature effect can be accurately analyzed, in real time
The changing value that monitoring adjustment causes main cable strand linear because of temperature change.
For this purpose, the present invention proposes suspension bridge strand temperature automatic measurement system, it is used to measure the main cable strand of suspension bridge
Different location temperature, the suspension bridge includes suspension cable, Sarasota, anchorage, sunpender and bridge floor, wherein the bridge floor passes through institute
Sunpender to be stated to connect with the suspension cable, the both ends of the suspension cable are fixed on the anchorage, and are supported by the Sarasota, so as to
It is enough that the bridge floor is suspended on river surface；
The suspension bridge strand temperature automatic measurement system includes temperature measuring device and data acquisition control device,
In,
The temperature measuring device includes temperature probe, temperature control module, Lora wireless transport module and the first power supply；Institute
It states temperature probe to be electrically connected with the temperature control module, also, the electric signal that the temperature probe measurement obtains is by the temperature control mould
Block is converted into temperature information；The Lora wireless transport module is electrically connected with the temperature control module, and can by Lora without
The temperature information is transmitted to the data acquisition control device by line communication modes；First power supply can give the temperature control
Module and the Lora wireless transport module provide electric energy；
The data acquisition control device can the data information to the temperature measuring device carry out unified standardization
Processing, and can be connect with the background data base of Internet of Things measurement and control of temperature platform, collected temperature information is saved in described
In background data base, the temperature information data are provided so as to the client-side program of internet of things oriented measurement and control of temperature platform；
The suspension bridge strand temperature automatic measurement system measures the temperature of the suspension bridge strand in the following manner:
The cross-section location that N number of main cable strand is chosen on the length direction of the main push-towing rope of the suspension bridge is surveyed as temperature
Section is measured, wherein N is the positive integer greater than 3；
A temperature measuring point is selected on the periphery in each temperature measurement section of the main cable strand as the survey of benchmark temperature
Measure point, and temperature measuring device, referred to as fiducial temperature measuring probe described in setting one, wherein the fiducial temperature is surveyed
Amount probe is fixed in the fiducial temperature measurement point, for measuring the temperature information of the fiducial temperature measurement point；
Using the fiducial temperature measurement point as basic point, by the interval of setting on the periphery of the cross section of the main cable strand
M temperature measuring point, referred to as section temperature measurement point are selected, wherein M is the positive integer more than or equal to 1, also, is each institute
State temperature measuring device, referred to as section temperature measuring probe described in section temperature measurement point setting one, wherein Mei Gesuo
It states section temperature measuring probe to be fixed in corresponding section temperature measurement point, for measuring the section temperature measurement
The temperature information of point；
Measured temperature information can be transferred to institute by the Lora wireless transport module of each temperature measuring device
State data acquisition control device；
Temperature measurement is carried out to M+1 temperature measuring point of the cross-section location of N number of main cable strand simultaneously, measured is complete
Portion's temperature information is saved to the background data base of the Internet of Things measurement and control of temperature platform by the data acquisition control device
In.
According to whole temperature informations, and by means of interpolation computing method, the main cable strand of the suspension bridge is fitted
Temperature distribution history.
For this purpose, the present invention proposes Internet of Things measurement and control of temperature platform, temperature information can be collected, by technology of Internet of things,
The temperature information is transferred to the background data base of Internet of Things measurement and control of temperature platform；In WEB application client, emulation display is outstanding
The Temperature Distribution of the main cable strand of cable bridge, it is long-range to determine the opportunity for adjusting rope.
For this purpose, the present invention proposes Internet of Things measurement and control of temperature platform comprising data perception front end system, data transmit middle-end
System, data analysis background system and Simulation Application terminal system；
The data perception front end system can be communicated by means of internet of things sensors by Internet of Things low-power consumption wide area network
Mode collects the various information datas of object；
End system is wired or wireless internet in the data transmission, can be by the information data transmission to institute
State data analysis background system；
The Simulation Application terminal system can analyze background system from the data and extract the information data, and in electricity
The information data and its analysis are shown as a result, realizing the long-range monitoring to the object by object emulation mode on brain screen；
It is characterized by:
The data perception front end system include according to suspension bridge strand temperature described in any one of claims 1 to 8 from
Dynamic measuring system, the temperature automatic measurement system collect the temperature information data of the suspension bridge strand, also, the data
Acquisition control device, movement or wired internet communication modes by end system in data transmission, the temperature is believed
Breath data are transmitted to the data analysis background system；
The data analysis background system includes suspension bridge strand temperature data library, wherein the suspension bridge strand temperature
Database includes strand temperature data table, the suspension bridge strand temperature data table include at least strand number, time of measuring and
Temperature data field is measured, the temperature data field is for storing the temperature information data；And according to the temperature information
Data and scheduled tune rope condition judge whether to carry out adjusting rope operation；
The Simulation Application terminal system includes suspension bridge simulation figure interface, wherein suspension bridge simulation figure circle
Face includes the emulating image of the suspension bridge, and the cross section of temperature measurement is indicated on the emulating image of the suspension bridge
Position, also, show the time of measuring of each temperature measuring point of same cross section with the form of pop-up window and measure temperature, and
It is reminded by image or color or text and adjusts whether rope condition meets, thus, it is remotely issued to site operation people adjust rope in time
Operational order.
The technical effect of suspension bridge strand temperature automatic measurement system of the invention:
● it is popped one's head in by means of magnetic temperature, temp probe is maintained on the strand to be measured by magnetic attraction；
● use is rechargeable battery powered, can be used for a long time；
● by Lora wireless communication technique and Internet technology, the temperature information is transferred to Internet of Things measurement and control of temperature
In the background data base of platform；
● mistake river strand beam is divided into 9 sections and is monitored, wherein each 5 temperature values of strand beam cross-section monitoring, are protected
Measurement accuracy and reliability are demonstrate,proved.
The technical effect of Internet of Things measurement and control of temperature platform of the invention:
● background data base storage temperature information transfers playback and analysis at any time；
● the measuring control point position of web program emulation display main rope of suspension bridge strand and Temperature Distribution；
● linear regression interpolation improves the measurement accuracy of temperature letter；
● computerized algorithm automatically analyzes temperature information, provides by predetermined condition and Suo Shiji is adjusted to remind.
Detailed description of the invention
Referring to attached drawing, feature, advantage of the invention and characteristic are able to more preferably by the description of following description
Understanding, in attached drawing:
Fig. 1: the schematic diagram of suspension bridge of the invention；
Fig. 2: another schematic diagram of suspension bridge of the invention, wherein the strand of the main push-towing rope of the suspension cable 1 is led by device is pulled
Draw；
Fig. 3: the strand cross-sectional view of the main push-towing rope of suspension bridge of the invention；
Fig. 4 a: embodiment of Internet of Things measurement and control of temperature platform of the invention；
Fig. 5: the diagram of the temperature measuring device of suspension bridge strand temperature automatic measurement system of the invention；
Fig. 6: the schematic diagram of an embodiment of suspension bridge strand temperature automatic measurement system of the invention；
Fig. 7: the schematic diagram of another embodiment of suspension bridge strand temperature automatic measurement system of the invention；
Fig. 8: another schematic diagram of suspension bridge of the invention, wherein mark the position in 9 temperature measurement section of equal part
It sets；
Fig. 9: another schematic diagram of suspension bridge of the invention, wherein mark the position in 11 temperature measurement sections；
Figure 10: the cross-sectional view of the main push-towing rope of suspension bridge of the invention；
Figure 11: the temperature data monitoring interface of the Simulation Application terminal system of Internet of Things measurement and control of temperature platform of the invention；
Figure 12: the configuration diagram of Internet of Things measurement and control of temperature platform of the invention；
Figure 13: the analogous diagram of the suspension bridge of the Simulation Application terminal system of Internet of Things measurement and control of temperature platform of the invention
The screen interface of picture；
Figure 14: three terminal screen figures circle of the Simulation Application terminal system of Internet of Things measurement and control of temperature platform of the invention
Face；
Figure 15: the temperature data administration interface of the Simulation Application terminal system of Internet of Things measurement and control of temperature platform of the invention.
Specific embodiment
Hereinafter, in conjunction with attached drawing and specific embodiment, the present invention is described further, it should be noted that
New embodiment can be formed between each embodiment described in hereafter or between each technical characteristic in any combination, condition is combination
Technology contents there is no logical contradiction or mistake.
One embodiment of suspension bridge strand temperature automatic measurement system according to the present invention, temperature automatic measurement system
The temperature united for measuring the different location of the main cable strand of suspension bridge, as shown in Figure 1, the suspension bridge includes suspension cable 1, Sarasota
2, anchorage 3, sunpender 4 and bridge floor 5, wherein the bridge floor 5 is connect by the sunpender 4 with the suspension cable 1, the suspension cable 1
Both ends are fixed on the anchorage 3, and are supported by the Sarasota 2, so as to which the bridge floor 5 to be suspended on river surface.Such as
Shown in Fig. 2, the suspension cable 1 includes main push-towing rope, and Fig. 2 shows the erection process of the main push-towing rope, the main push-towing rope is by prefabricated parallel steel wire
Strand is constituted, and every main push-towing rope includes more elongated strands and Duo Gen dorsal funciculus.Strand 109 is by means of hauling rope 112 and pulls device
114, across put rope frame 101, gyroscope wheel 102, along eastern anchor 103, eastern buttress door frame 104, the road Dong Mao door frame 105, eastern tower top portal
106, the road Zhong Mao door frame 108, door frame track cable 111, the road Zhong Mao 113 westwards tower top portal 115, the road Xi Mao 117, Xi Zhidunmen
Frame 118, western anchor 119, the movement of hoist engine 120 move ahead, wherein eastern anchor 103, The East Pagoda 107, western tower 116, western anchor 119 are for supporting
With fixed strand and the main push-towing rope formed by strand.The main push-towing rope set up when vertical array at pinnacle approximate orthohexagonal, tightly
It is round after cable.Optionally, as shown in Figure 1, the suspension bridge further includes suspension cable, described suspension cable one end connects the Sarasota
2 tops, the other end connect the bridge floor 5, form the pulling force vertically upward to the bridge floor 5.
Referring to Fig. 4, the suspension bridge strand temperature automatic measurement system includes temperature measuring device 11 and data acquisition control
Device 12 processed.It is understood that including the few temperature measurement of quantity in the suspension bridge strand temperature automatic measurement system
In the case where device 11, the data acquisition control device 12 is directly wireless by Lora with whole temperature measuring devices 11
Communication modes communication connection controls the acquisition of temperature information data.In the case where temperature measurement number of cross sections is numerous, to use
Numerous temperature measuring device 11, between the temperature measuring device 11 and the data acquisition control device 12 again plus in one
After equipment, the trunking includes multiple Lora wireless telecommunications trunk modules, each Lora wireless telecommunications trunk module and more
A temperature measuring device 11 by Lora wireless communication mode communication connection, and with the data acquisition control device 12
By Lora wireless communication mode communication connection, so that the temperature information data forwarding that the temperature measuring device 11 measures be arrived
Data acquisition control device 12.
Referring to Fig. 5, the temperature measuring device 11 includes temperature probe, temperature control module, Lora wireless transport module and the
One power supply；The temperature probe is electrically connected with the temperature control module, also, the electric signal that the temperature probe measurement obtains is by institute
It states temperature control module and is converted into temperature information；The Lora wireless transport module is electrically connected with the temperature control module, and can be led to
It crosses Lora wireless communication mode and the temperature information is transmitted to the data acquisition control device；First power supply can be given
The temperature control module and the Lora wireless transport module provide electric energy.It is understood that as shown in figure 4, the temperature control mould
Block can be integrated in the temperature probe, or be integrated in the Lora wireless transport module, and such configuration is in Fig. 4
It shows, the temperature probe is directly connected with the Lora wireless transport module.Advantageously, the temperature control module includes mould
Data conversion submodule, the electric signal i.e. analog temperature that the modulus measures the temperature probe according to transform subblock are believed
Number it is converted into data information i.e. digital temperature information.If it is necessary, each temperature control module can connect it is multiple described
Temperature probe, such as 6 temperature probes of each temperature measurement cross-sectional perimeter arrangement described below.It is such to be disposed with
Conducive to saving cost.The temperature probe is for example electrically connected by conductor wire realization with the temperature control module, and the Lora is wireless
Transmission module is electrically connected with the temperature control module by serial communication or the realization of RS485 communication modes.First power supply can
To be AC power source and the first power supply adaptor, the alternating current can be converted to direct current by first power supply adaptor.
First power supply is also possible to the DC power supply with rechargeable battery, so as to no alternating current or ac potential in
Guarantee that the temperature measuring device works normally in the case where quite remote distance.
The data acquisition control device 12 can to the temperature information data of the acquisition of the temperature measuring device 11 into
The unified standardization processing of row, and can be connect with the background data base of Internet of Things measurement and control of temperature platform, it will be described collected
Temperature information data are saved in the background data base, so as to the client-side program of internet of things oriented measurement and control of temperature platform
The temperature information data are provided.It is understood that the data acquisition control device for example meets LoRa network data biography
Defeated specification, the data information for being able to carry out internet of things oriented awareness apparatus carry out unified standardization processing.That is, to not
Same data information such as temperature, distance, pulling force etc. is by the format analysis processing of LoRa network data transmission specification at unified data
Packet format, convenient for carrying out data exchange with Internet of Things awareness apparatus.And it can be by internet communication protocol specification such as TCP/
IP encapsulation of data, to send data packet to the data of Internet of Things measurement and control of temperature platform analysis background system.
Referring to Fig. 3, Fig. 8, Fig. 9, the suspension bridge strand temperature automatic measurement system measures the suspension cable in the following manner
The temperature of bridge strand:
Referring to Fig. 8, Fig. 9, the cross section position of N number of main cable strand is chosen on the length direction of the main push-towing rope of the suspension bridge
It sets, measures section as temperature, wherein N is the positive integer greater than 3.It is understood that the size of temperature measurement number of cross sections N
The length and measurement accuracy of main push-towing rope are depended primarily on, for example, the suspension bridge for being 2000 meters or so for length, takes 9 to 11 temperature
Degree measurement section is proper.
Referring to Fig. 3, selecting a temperature measuring point on the periphery in each temperature measurement section of the main cable strand is base
Quasi- temperature measuring point, and temperature measuring device, referred to as fiducial temperature measuring probe described in setting one, wherein the base
Quasi- temperature measurement probe is fixed in the fiducial temperature measurement point, and the temperature for measuring the fiducial temperature measurement point is believed
Breath.It is understood that as shown in Figure 10, the suspension bridge for being 2000 meters or so for length, main push-towing rope may include about 250
Strand, as shown in figure 3, every strand may include the steel wire that about 125 diameters are about 5 millimeters, strand diameter up to 5 centimetres with
On.As shown in figure 3, on about 18 centimetres of length of strand perimeter where selected reference temperature measuring point such as Datum Strand 6
Position 50.Optionally, on the basis of selecting two temperatures measurement point on the periphery in each temperature of main cable strand measurement section
Temperature measuring point, taking the two temperature averages is benchmark temperature.
Referring to Fig. 3, using the fiducial temperature measurement point as basic point, by setting on the periphery of the cross section of the main cable strand
M temperature measuring point, referred to as section temperature measurement point are selected in fixed interval, and wherein M is the positive integer more than or equal to 1, also,
For each section temperature measurement point be arranged one described in temperature measuring device, referred to as section temperature measuring probe,
In, each section temperature measuring probe is fixed in corresponding section temperature measurement point, for measuring described cut
The temperature information of face temperature measuring point.It is understood that for 18 centimetres of Zhou Changyue of strand, one temperature of every 3 centimetres of selections
Measurement point is spent, the number of whole cross section temperature measuring point is thus 6, and except a fiducial temperature measurement point, section temperature is surveyed
The quantity M of amount point is equal to 5, and position is as shown in figure 3, the first section temperature measurement point 51, the first section temperature measurement point 52, the
One section temperature measurement point 53, the first section temperature measurement point 54, the 5th section temperature measurement point 55.The measurement of strand section temperature
The quantity M of point depends primarily on the diameter and measurement accuracy of strand, for example, being 5 lis for above-mentioned diameter to improve measurement accuracy
The strand of rice can choose 11 section temperature measurement points on same temperature measurement section.The temperature measurement section is averaged
Temperature is equal to the sum of the M+1 section temperature measurement point 51 to 55 and temperature value of fiducial temperature measurement point 50 and makes even again
?.
Referring to Fig. 4, the Lora wireless transport module of each temperature measuring device can be by measured temperature information
It is transferred to the data acquisition control device.It is understood that the suspension bridge for being 2000 meters or so for length, Lora is wireless
Communication be it is adequate, be not necessarily to relay communication equipment.Therefore, the Lora wireless transport module of each temperature measuring device
Measured temperature information can be transferred to the data acquisition control device by Lora wireless communication mode.Wireless telecommunications
Mode can be to avoid the wiring of wire communication mode complexity, and saves cost.
Temperature measurement is carried out to M+1 temperature measuring point of the cross-section location of N number of main cable strand simultaneously, measured is complete
Portion's temperature information is saved to the background data base of the Internet of Things measurement and control of temperature platform by the data acquisition control device
In.It is understood that measurement simultaneously is in contrast, for dozens of even a temperature measuring points up to a hundred, measurement data
Transmission and preservation need the time, it is impossible to absolutely accomplish that zero time difference is synchronous.For example, being surveyed for above-mentioned 9 to 11 temperature
For the measurement for measuring section, all temperature datas will be completely presented in Simulation Application terminal system, including data acquisition, biography
Defeated, preservation is arranged, analyzes and is handled, it may be necessary to 20 seconds.
According to whole temperature informations, and by means of interpolation computing method, the main cable strand of the suspension bridge is fitted
Temperature distribution history.It is understood that interpolation computing method comparative maturity, linear interpolation or non-linear interpolation, it can also
It is categorized into Lagrange interpolation, Newton interpolation, Hermite interpolation, piecewise interpolation and spline interpolation.So-called fitting refers to
Several discrete function values { f1, f2 ..., fn } of certain known function, by adjusting undetermined coefficient f (λ 1, λ several in the function
2 ..., λ 3) so that the difference of the function and known point set is minimum for example in least square meaning.For example, for above-mentioned 9 to
11 temperature measure section, can there is 9 to 11 temperature datas, can be fitted based on these temperature datas by interpolation calculation
The temperature distribution history of main cable strand out.
Further, referring to Fig.1 1, in this example, 11 temperature measurement sections are had by tune strand, each section there are 4
Section temperature measurement point is calculated by the mean temperature in each temperature measurement section of tune strand, then each of with reference strand
The mean temperature in temperature measurement section is compared, then calculating difference is determined whether according to the difference calculated
Adjust rope.
Preferably, each temperature measuring device 11 includes four to six temperature probes, a temperature control module, one
Lora wireless transport module, first power supply, a waterproof box body.That is, a temperature control module acquires four to six
The temperature data of temperature probe.
Optionally, each temperature measuring device 11 include a temperature probe, a temperature control module, a Lora without
Line transmission module, first power supply, a waterproof box body.That is, a temperature control module acquires a temperature probe
Temperature data.
Based on the above-mentioned technical proposal, the optimization for exchanging Suo Jindu has been reached, has been surveyed automatically in the suspension bridge strand temperature
Under the action of amount system, the suspension bridge for being 2000 meters or so for length has most accomplished that each evening adjusts 18 strands fastly
Prestissimo ensure that the continuity of Strand Erection.
Referring to Fig. 8, the temperature measurement section number N is equal to 9, is distributed in institute to 9 temperature measurement sectional uniform
In the length for stating the main push-towing rope of suspension bridge.Fig. 8 schematically mark the approximate location 201 in 9 temperature measurement section to
209。
It is 5 referring to Fig. 3, the section temperature measurement point number M, respectively the first section temperature measurement point 51, second
Section temperature measurement point 52, third section temperature measurement point 53, the 4th section temperature measurement point 54, the 5th section temperature measurement point
55, totally 6 temperature measuring points, 6 temperature measure together with the fiducial temperature measurement point 50 in mutually synthermal measurement section
Point is evenly distributed on the periphery in temperature measurement section.
For this purpose, the temperature measuring device needs 54 sets altogether if using the temperature measuring device of single temperature probe.If using
The temperature measuring device of six temperature probes, the temperature measuring device need 9 sets altogether.
Optionally, section is measured in each temperature, uses a temperature measuring device, wherein each temperature measuring device
5 to 10 temperature probes can be connected, such configuration has so that 9 temperature measurement sections only need 9 sleeving temperature measuring devices
Conducive to reduction product cost.
It is 2000 meters or so of suspension bridge for length, 9 temperature measurement section in above-mentioned technical proposal can guarantee
The production cost of suitable measurement accuracy, suspension bridge strand temperature automatic measurement system is reasonable.
Preferably, the suspension bridge is set to be east-west.It is such to set the convenience merely to verbal description, in fact
On border, the trend of bridge can be any direction.As shown in figure 9, the temperature measurement section number N is equal to 11,11 temperature
Degree measurement sectional position is: in the east across nearly anchorage 301, in the east across span centre 302, across the Near East tower 303, main span Near East tower in the east
304, main span four/3 305,306, main span a quarter 307 in main span, the closely western tower 308 of main span, west across nearly western tower 309,
West is across span centre 310 and west across nearly anchorage 311；The section temperature measurement point number M is 3 to 5, with mutually synthermal survey
Totally 4 to 6 temperature measuring points, 6 temperature measuring points are evenly distributed on institute to the fiducial temperature measurement point in amount section together
On the periphery for stating temperature measurement section.
If the temperature measuring device needs 44 to 66 sets altogether using the temperature measuring device of single temperature probe.If using
The temperature measuring device of four to six temperature probes, the temperature measuring device need 11 sets altogether.
It is understood that the accurate location of across the Near East tower 303 or main span Near East tower 304 is unnecessary in the east, for example,
Temperature measurement section can as close to The East Pagoda, as long as can install temperature measuring device can, therefore, in the east across the Near East
Temperature information data at tower 303 or 304 two temperatures of main span Near East tower measurement section will not differ too big, and similarly, main span is closely western
Tower 308, west will not differ too big across the temperature information data at nearly western 309 two temperatures of tower measurement section.This is also to choose 9
It is also preferred reason that temperature, which measures section,.
As shown in figure 11, above-mentioned technical proposal is used in practice, and the suspension bridge for being 2000 meters or so for length comes
It says, 11 temperature measurement sections, 4, every section temperature measuring points are the higher selections of cost performance.
Preferably, the temperature probe is magnetic-type temperature probe, can be securely by the magnetic-type temperature probe
It is fixed on the temperature measuring point.Such configuration is so that the peace installation and dismantling shifting temperature measuring device easily and fast, improves
Working efficiency.It is further preferable that the temperature probe includes PT100 platinum resistance thermometer sensor, PT100 platinum resistance, its resistance value can be with
The variation of temperature and change.100 after PT indicate that its resistance value at 0 DEG C is 100 ohm, and at 100 DEG C, its resistance value is about
138.5 ohm.
As example, high-precision PT100 temperature probe is had the following characteristics that
The silver-plated shielding of high density, plating silver conductor, Teflon line, have the characteristics that high temperature resistant, corrosion-resistant, acid and alkali-resistance, waterproof.
Using epoxy resin filling and sealing, never leak, the silver-plated shielded wire of high density, there is 316L essence steel protection pipe pair
Sensor has stronger protective effect,
PT100 temperature sensor uses polytetrafluoroethylene (PTFE) silver jacketed wire, there is 2 cores, 3 cores, 4 cores, plates silver conductor.200 DEG C of heatproof,
Default uses 3 core wires；
Protection pipe size is defaulted as: diameter 4MM* length；
Buttock line uses high-quality connecting terminal, and needle-like terminal also may be selected in default opening 4MM；
A class precision can be to 0.1 DEG C, measurement range: -50 DEG C -100 DEG C；
The general soft aluminium strip of the protection of temperature sensor pastes note, increases the contact area of probe with metal.
Preferably, the temperature control module includes analog-to-digital conversion submodule, the first serial line interface and the first power interface,
In, the analog temperature signal that the temperature probe measures is converted into digital temperature information, institute according to transform subblock by the modulus
The first power interface is stated to be electrically connected with first power supply.It is understood that the temperature control module further includes at first
Device chip is managed, this is conducive to control the acquisition of temperature, transmission by writing program and calculate.
As example, the temperature measuring device technology of serial communication realizes the data communication between functional module.
Technology of serial communication is one of mechanics of communication being most widely used in distributed industrial control system and work
Most ancient one of the mechanics of communication in industry scene.Wherein RS485 bus with its simple structure, cheap, optional chip is more, is convenient for
The features such as maintenance, is widely applied in numerous industrial control systems.
The temperature control module of the temperature measuring device is, for example, RS-4000M, is mainly used for distributed data acquisition system
In, the Industry Control field data acquiring terminal based on RS485 bus is collectively constituted with other data acquisition modules.
RS-4000M acquisition module uses RS485 communication interface, meets MODBUS rtu protocol specification.It can be compatible with almost
The serial Modbus interface product that all PLC and PAC suppliers provide.
RS-4000M module uses electrical isolation technology and watchdog technique, effective guarantee equipment safety reliability service.
32 120M high speed arm processors embed real time operating system.
RS-4000M RS485 bus, Modbus rtu protocol acquisition module；CAN-4000T, CAN bus, ICAN agreement
Acquisition module；NET-4000M, industry ethernet, Modbus Transmission Control Protocol acquisition module；I/O pin is completely the same, conveniently exists
It is flexibly selected between each product line.
High-rise dynamic base is provided, need to only call DAM_ReadDeviceAD such as that can read data without being concerned about that bottom is thin
Section.
It is seamlessly connected USB, PCI, Ethernet bus CAN interface card provides complete solution party for distributed parallel computing environment
Case.
Seamless connection CAN bridge, CAN interchanger, CAN turn the equipment such as optical fiber, mention for very-long-range hybrid structure measurement and control network
For total solution
As example, the technical parameter of temperature control module is as follows:
Model: RS-4041M；
Thermal resistance input；
Input channel: 5；
Connection type: 2 line systems/3 line systems；
Input type: PT100, PT200, PT500, PT1000 (- 200 DEG C~+850 DEG C) Cu50, Cu100 (- 50 DEG C~+
150℃)
Input impedance 1.5M
ADC resolution ratio: 4-bit
Temperature resolution: 0.1 DEG C
Precision: ± 0.1%
All channels of sample frequency: 5 times/second
Isolation: 2500V
Protection: Built-in TVS/ESD Protection
±4kV Contact for each terminal
Preferably, the Lora wireless transport module include second processor chip, memory, the second serial line interface,
Antennal interface and second source interface；The second source interface of the Lora wireless transport module and first power supply carry out electricity
Connection；First serial line interface of the temperature control module is connected with the second serial line interface of the Lora wireless transport module, will
The temperature information of the temperature probe measurement is transmitted to the Lora wireless transport module；The Lora wireless transport module branch
The transmission of LoRa wireless short-distance data is held, it being capable of ad hoc network；The Lora wireless transport module can be used as transistroute and/or
Terminal device.
Lora wireless communication technique is very suitable to the data of the data pick-up of the suspension bridge among city or between city
Communication greatly reduces the wiring complexity of information transmission, saves cost.Due to the spy of the low-power consumption of Lora wireless communication technique
Point can be used rechargeable battery as it and provide the energy, replaces battery at regular intervals, and the wiring for reducing power line is complicated
Degree.
Preferably, the data acquisition control device include third communication processor chips, LoRa module, wireless module,
Embedded real-time operating system, serial line interface, ethernet lan interface, WIFI interface, antennal interface and third power interface, energy
Enough while serial equipment, ethernet device and WIFI equipment are connected, realizes data transparent transmission and routing.
As example, data acquisition control device is TINCKAYTMESensor-RTU, the product are a by applicant
The intelligent data that independent research is realized adopts control instrument, is the key foundation of overall process intelligent monitoring platform.
ESensor-RTU product have Peripheral Interface abundant, support multiple network communication, stable data transmission with it is remote
Journey countercharge order, based on matched intelligent data application system, it can be achieved that intelligence, unattended efficient process with it is quick
Response.
Compared to the equipment of other data collectors, distributed data acquisition mode used by ESensor-RTU makes data
Acquisition is no longer confined in the working range of separate unit collector, but can be carried out correlation within the scope of plant area by Ethernet and be set
Standby operating status, all kinds of analog quantitys, switching value, sensor signal data are acquired, acquisition distance, because apart from it is too long due to lead
The case where causing acquisition data distortion reduces to minimum, and the real-time and transmission speed of Ethernet is also that can not compare in corresponding other way
Quasi-.
It is the intelligence of maintenance work after the suspension bridge is built up, the suspension bridge strand temperature is surveyed automatically
Amount system can be converted into the temperature stress monitoring system of suspension bridge, at this moment, it is necessary to arrange number with hundred on bed rearrangement suspension bridge
The temperature sensor of meter, so as to the temperature change of the key structure point of suspension bridge described in real-time monitoring, need thus Lora without
Line communicates trunking 13, guarantees the reliability of data transmission.
Preferably, section being measured for K adjacent temperature, one Lora wireless transport module is set as repeater, referred to as
For Lora wireless telecommunications trunk module, wherein K is the positive integer more than or equal to 1；The Lora wireless telecommunications trunk module
It is logical data can be carried out with the Lora wireless transport module of the temperature measuring device on the adjacent K temperature measurement section
News, and data communication can be carried out with the data acquisition control device, so as to what the temperature measuring device was measured
Temperature information is transmitted to the data acquisition control device.As shown in figure 4, the Lora wireless telecommunications trunking 13 includes two
A Lora wireless telecommunications trunk module.
As example, the Lora wireless telecommunications trunk module uses high performance 32 bit walk processor of technical grade and work
Industry grade wireless module using embedded real-time operating system as software support platform, while providing 1 RS232 or RS485/
RS422,1 ethernet lan, 1 Ethernet WAN/LAN multiplexing mouth and 1 WIFI interface, can connect simultaneously serial equipment,
Ethernet device and WIFI equipment realize data transparent transmission and routing function.The Lora wireless telecommunications trunk module uses
The design of WDT house dog guarantees that system is stablized；Using the complete anti-mechanism that goes offline, guarantee that data terminal is always online；Offer standard
RS232 or RS485/RS422, Ethernet and WIFI interface can be directly connected to serial equipment, ethernet device and WIFI and set
It is standby；Standard cable WAN mouthfuls is provided, standard PPPOE agreement is supported, adsl equipment can be directly connected to；Support a variety of WAN connection sides
Formula, including static IP, DHCP, L2TP, PPTP, PPPOE, 2.5G/3G/4G；Support radio honeycomb and wired WAN dual link intelligence
Switch backup functionality；Support long-range management, SYSLOG, SNMP, TELNET, SSHD, the functions such as HTTPS；It supports local and remote
Online upgrading imports and exports configuration file；Support LoRa network wireless data-transformation facility.
In order to monitor the physical state of the suspension bridge in traffic control center remote, the applicant is based on described outstanding
Cable bridge strand temperature automatic measurement system proposes Internet of Things measurement and control of temperature platform.
Referring to Fig. 4, Figure 11-Figure 15, an embodiment of Internet of Things measurement and control of temperature platform according to the present invention, the Internet of Things
Net measurement and control of temperature platform include data perception front end system 11,12,13, end system 16, data analysis backstage are in data transmission
System 14 and Simulation Application terminal system 15.
The data perception front end system can be communicated by means of internet of things sensors by Internet of Things low-power consumption wide area network
Mode collects the various information datas of object.Referring to Fig. 4, the data perception front end system includes temperature measuring device 11, number
According to acquisition control device 12 and presumable Lora wireless telecommunications trunking 13.Lora between these devices and equipment without
The detailed description of line communication modes is seen above.
End system 16 is wired or wireless internet in the data transmission, can be by the information data transmission extremely
The data analyze background system 14.Typically, for the suspension bridge, temperature information data are transmitted by mobile Internet
It is suitably that this avoids the wiring costs of cable network to data analysis background system.
The Simulation Application terminal system 15 can analyze background system from the data and extract the information data, and
The information data and its analysis are shown as a result, realizing the long-range prison to the object by object emulation mode on computer screen
Control.Figure 13 shows an example of the Simulation Application terminal system 15, it is that the emulation shown on a terminal screen is outstanding
Cable bridge.Figure 14 shows the other three terminal screen graphical interfaces.
The data perception front end system includes above-mentioned suspension bridge strand temperature automatic measurement system, and the temperature is surveyed automatically
Amount system collects the temperature information data of the suspension bridge strand, also, the data acquisition control device, passes through the data
The movement of end system or wired internet communication modes in transmission, after the temperature information data are transmitted to the data analysis
Platform system.Referring to Fig. 4, suspension bridge strand temperature automatic measurement system includes temperature measuring device 11, data acquisition control device
12 and presumable Lora wireless telecommunications trunking 13.
The data analysis background system includes suspension bridge strand temperature data library, wherein the suspension bridge strand temperature
Database includes strand temperature data table, the suspension bridge strand temperature data table include at least strand number, time of measuring and
Temperature data field is measured, the temperature data field is for storing the temperature information data；And according to the temperature information
Data and scheduled tune rope condition judge whether to carry out adjusting rope operation.Referring to Fig.1 5, the suspension bridge strand temperature is shown
Spend a view of tables of data, wherein time of measuring is not shown due to the limitation of screen width.The temperature information of Figure 11
Data interface shows there are 11 temperature measurement sections by tune strand, there are 4 section temperature measurement points in each section, and calculating is adjusted
Strand each temperature measurement section mean temperature, then with each temperature of reference strand measurement section mean temperature into
Row compares, calculating difference, is then determined whether to adjust rope according to the difference calculated, for example, each temperature measures section
The difference be all zero, show that strand is adjusted to be restored to normal condition, tune rope can be carried out.Preferably, scheduled tune rope
Condition are as follows: by tune strand place across namely by adjust across temperature weighted average value to reference to strand it is corresponding across temperature add
The difference of weight average value is within -0.3 DEG C~0 DEG C.
Referring to Fig.1 3, the Simulation Application terminal system includes suspension bridge simulation figure interface, wherein the suspension bridge is imitative
True graphical interfaces includes the emulating image of the suspension bridge, and temperature measurement is indicated on the emulating image of the suspension bridge
Cross-section location, also, show with the form of pop-up window the time of measuring and survey of each temperature measuring point of same cross section
Amount temperature, and reminded by image or color or text and adjust whether rope condition meets, thus, in time remotely to execute-in-place
Member, which issues, adjusts rope operational order.
Above-mentioned technical proposal has reached the technical effect for exchanging the optimization of Suo Jindu, the suspension bridge strand temperature from
Under the action of dynamic measuring system, the suspension bridge for being 2000 meters or so for length has most accomplished that each evening adjusts 18 bar ropes fastly
The prestissimo of stock, ensure that the continuity of Strand Erection.
Preferably, the Simulation Application terminal system can send temperature data acquisition instruction, and be passed by the data
Defeated middle end system adopts the data that temperature data acquisition instruction is transmitted to the suspension bridge strand temperature automatic measurement system
Collect control device, temperature measuring device described in the data acquisition control device poll, the temperature measuring device measures each
Temperature measures the temperature information data in section, and by end system in the data acquisition control device and data transmission, by institute
The strand temperature data table that temperature information data are transmitted to the suspension bridge strand temperature data library is stated, and to the temperature information
Data are analyzed and are handled, and suspension bridge simulation figure interface is refreshed, and the variation of the temperature information data is showed
Come.
Based on the above-mentioned technical proposal, it in the building course of the suspension bridge, in the assembling process of main push-towing rope, can be realized
The Temperature Distribution of each strand of the main push-towing rope is remotely monitored, adjusts rope condition to meet once being calculated, issues and adjust Suo Zhiling.
After suspension bridge is built up, the suspension bridge strand temperature automatic measurement system still can be used to entire bridge
It carries out continuing monitoring.
The preferred or specific embodiment of the invention is described in detail above.It should be appreciated that the technology of this field
Personnel make many modifications and variations without the design concept that creative work can be created according to the present invention.Therefore, all
In technical field technical staff according to the design concept of the invention pass through on the basis of existing technology logic analysis, reasoning or
The limited available technical solution of experiment of person, all should be within the scope of the invention and/or by claims institute
In determining protection scope.
Claims (10)
1. suspension bridge strand temperature automatic measurement system, is used to measure the temperature of the different location of the main cable strand of suspension bridge,
The suspension bridge includes suspension cable (1), Sarasota (2), anchorage (3), sunpender (4) and bridge floor (5), wherein the bridge floor (5) passes through
The sunpender (4) connect with the suspension cable (1), and the both ends of the suspension cable (1) are fixed on the anchorage (3), and by described
Sarasota (2) support, so as to which the bridge floor (5) to be suspended on river surface；
The suspension bridge strand temperature automatic measurement system includes temperature measuring device (11) and data acquisition control device (12),
Wherein,
The temperature measuring device (11) includes temperature probe, temperature control module, Lora wireless transport module and the first power supply；Institute
It states temperature probe to be electrically connected with the temperature control module, also, the electric signal that the temperature probe measurement obtains is by the temperature control mould
Block is converted into temperature information；The Lora wireless transport module is electrically connected with the temperature control module, and can by Lora without
The temperature information is transmitted to the data acquisition control device (12) by line communication modes；First power supply can be to described
Temperature control module and the Lora wireless transport module provide electric energy；
The data acquisition control device (12) can carry out unified rule to the data information of the temperature measuring device (11)
Generalized processing, and can be connect with the background data base of Internet of Things measurement and control of temperature platform, collected temperature information is saved in
In the background data base, the temperature information number is provided so as to the client-side program of internet of things oriented measurement and control of temperature platform
According to；
The suspension bridge strand temperature automatic measurement system measures the temperature of the suspension bridge strand in the following manner:
The cross-section location that N number of main cable strand is chosen on the length direction of the main push-towing rope of the suspension bridge is cut as temperature measurement
Face, wherein N is the positive integer greater than 3；
Selecting a temperature measuring point on the periphery in each temperature measurement section of the main cable strand is benchmark temperature measuring point,
And the temperature probe of temperature measuring device described in being arranged one, referred to as fiducial temperature measuring probe, wherein the benchmark temperature
Degree measuring probe is fixed in the fiducial temperature measurement point, for measuring the temperature information of the fiducial temperature measurement point；
It is selected by the interval of setting on the periphery of the cross section of the main cable strand using the fiducial temperature measurement point as basic point
M temperature measuring point, referred to as section temperature measurement point, wherein M is the positive integer more than or equal to 1, also, is each described section
The temperature probe of temperature measuring device described in face temperature measuring point setting one, referred to as section temperature measuring probe, wherein
Each section temperature measuring probe is fixed in corresponding section temperature measurement point, for measuring the section temperature
Spend the temperature information of measurement point；
Measured temperature information can be transferred to the number by the Lora wireless transport module of each temperature measuring device
According to acquisition control device；
Temperature measurement, measured all temperature are carried out to M+1 temperature measuring point of the cross-section location of N number of main cable strand simultaneously
Degree information is saved in the background data base of the Internet of Things measurement and control of temperature platform by the data acquisition control device.
According to whole temperature informations, and by means of interpolation computing method, the temperature of the main cable strand of the suspension bridge is fitted
Spend distribution curve.
2. suspension bridge strand temperature automatic measurement system according to claim 1, it is characterised in that: the temperature measurement is cut
Face number N is equal to 9, in the length for the main push-towing rope for being distributed in the suspension bridge to 9 temperature measurement sectional uniform；
The section temperature measurement point number M is 5, together with the fiducial temperature measurement point in mutually synthermal measurement section altogether
6 temperature measuring points, 6 temperature measuring points are evenly distributed on the periphery in temperature measurement section.
3. suspension bridge strand temperature automatic measurement system according to claim 1, it is characterised in that: set the suspension bridge
It is east-west；
Temperature measurement section number N is equal to 11, and 11 temperature measurement sectional position is: in the east across nearly anchorage (301),
In the east across span centre (302), in the east across the Near East tower (303), main span Near East tower (304), main span 3/4ths (305), in main span
(306), main span a quarter (307), the nearly Xi Ta of main span (308), west across nearly Xi Ta (309), west across span centre (310) and
West is across nearly anchorage (311)；
The section temperature measurement point number M is 3 to 5, the fiducial temperature measurement point one with mutually synthermal measurement section
Totally 4 to 6 temperature measuring points are played, which is evenly distributed on the periphery in temperature measurement section.
4. suspension bridge strand temperature automatic measurement system according to claim 1, it is characterised in that: the temperature probe is
The magnetic-type temperature probe can be fixed on the temperature measuring point by magnetic-type temperature probe securely.
5. suspension bridge strand temperature automatic measurement system according to claim 1, it is characterised in that: the temperature control module packet
Include analog-to-digital conversion submodule, the first serial line interface and the first power interface, wherein the modulus is according to transform subblock by the survey
The analog temperature signal of warm probe measurement is converted into digital temperature information, and first power interface and first power supply carry out
Electrical connection.
6. suspension bridge strand temperature automatic measurement system according to claim 4, it is characterised in that: the Lora is wirelessly passed
Defeated module includes place's the second reason device chip, memory, the second serial line interface, antennal interface and second source interface；
The second source interface of the Lora wireless transport module is electrically connected with first power supply；
First serial line interface of the temperature control module is connected with the second serial line interface of the Lora wireless transport module, by institute
The temperature information for stating temperature probe measurement is transmitted to the Lora wireless transport module；
The Lora wireless transport module supports the transmission of LoRa wireless short-distance data, being capable of ad hoc network；
The Lora wireless transport module can be used as transistroute and/or terminal device.
7. suspension bridge strand temperature automatic measurement system according to claim 1, it is characterised in that: the data acquisition control
Device processed include third communication processor chips, LoRa module, wireless module, embedded real-time operating system, serial line interface, with
Too net LAN interface, WIFI interface, antennal interface and third power interface, can connect simultaneously serial equipment, ethernet device and
WIFI equipment realizes data transparent transmission and routing.
8. suspension bridge strand temperature automatic measurement system according to claim 1, it is characterised in that: for K adjacent temperature
A Lora wireless transport module is arranged as repeater, referred to as Lora wireless telecommunications trunk module in degree measurement section, wherein
K is the positive integer more than or equal to 1；
The Lora wireless telecommunications trunk module can be with the temperature measuring device on the adjacent K temperature measurement section
Lora wireless transport module carries out data communication, and can carry out data communication with the data acquisition control device, so as to
It is enough that the temperature information that the temperature measuring device measures is transmitted to the data acquisition control device.
9. Internet of Things measurement and control of temperature platform comprising end system, data analysis backstage in data perception front end system, data transmission
System and Simulation Application terminal system；
The data perception front end system can pass through Internet of Things low-power consumption wide area network communication modes by means of internet of things sensors
Collect the various information datas of object；
End system is wired or wireless internet in the data transmission, can be by the information data transmission to the number
According to analysis background system；
The Simulation Application terminal system can analyze background system from the data and extract the information data, and in computer screen
The information data and its analysis are shown as a result, realizing the long-range monitoring to the object by object emulation mode on curtain；
It is characterized by:
The data perception front end system includes surveying automatically according to suspension bridge strand temperature described in any one of claims 1 to 8
Amount system, the temperature automatic measurement system collects the temperature information data of the suspension bridge strand, also, the data acquire
Control device, movement or wired internet communication modes by end system in data transmission, by the temperature information number
Background system is analyzed according to the data are transmitted to；
The data analysis background system includes suspension bridge strand temperature data library, wherein the suspension bridge strand temperature data
Library includes strand temperature data table, and the suspension bridge strand temperature data table includes at least strand number, time of measuring and measurement
Temperature data field, the temperature data field is for storing the temperature information data；And according to the temperature information data
With scheduled tune rope condition, judge whether to carry out adjusting rope operation；
The Simulation Application terminal system includes suspension bridge simulation figure interface, wherein suspension bridge simulation figure interface packet
The emulating image of the suspension bridge is included, and indicates the cross section position of temperature measurement on the emulating image of the suspension bridge
It sets, also, shows the time of measuring and measurement temperature of each temperature measuring point of same cross section with the form of pop-up window, and lead to
Image or color or text are crossed to remind and adjust whether rope condition meets, thus, it is remotely issued to site operation people adjust rope behaviour in time
It instructs.
10. Internet of Things measurement and control of temperature platform according to claim 9, it is characterised in that: the Simulation Application terminal system
Temperature data acquisition instruction can be sent, and by end system in data transmission, the temperature data acquisition is instructed and is passed
Transport to the data acquisition control device of the suspension bridge strand temperature automatic measurement system, the data acquisition control device poll
The temperature measuring device, the temperature measuring device measure the temperature information data in each temperature measurement section, and pass through institute
End system in data acquisition control device and data transmission is stated, the temperature information data are transmitted to the suspension bridge strand temperature
The strand temperature data table of database is spent, and the temperature information data are analyzed and handled, it is imitative to refresh the suspension bridge
True graphical interfaces shows the variation of the temperature information data.
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| CN201811101819.1A CN109632122B (en) | 2018-09-20 | 2018-09-20 | Automatic temperature measurement system for rope strands of suspension bridge and temperature measurement and control platform of Internet of things comprising automatic temperature measurement and control system |
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| CN112195784A (en) * | 2020-09-15 | 2021-01-08 | 中交第二公路工程局有限公司 | Catwalk sag adjustment system and adjustment method for erecting main cable by adopting air spinning method |
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