CN109631809A - Bridge deflection measurement device and method - Google Patents
Bridge deflection measurement device and method Download PDFInfo
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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
- G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
- G01B15/06—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring the deformation in a solid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0008—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of bridges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
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Abstract
提出了一种桥梁挠度测量设备和方法，所述设备包括电脑终端数据处理系统及坐标系构建系统、多个初级信号发射与数据接收传输装置以及至少一个次级信息接收与传输装置；所述初级信号发射与数据接收传输装置具有电磁波信号发射器以发射电磁波信号；所述至少一个次级信息接收与传输装置安装在需要检测桥梁挠度的桥梁位置，接收来自初级信号发射与数据接收传输装置的电磁波信号，记录所述电磁波信号的发射和接收时间；所述电脑终端数据处理系统及坐标系构建系统根据所述电磁波信号的发射和接收时间以及多个初级信号发射与数据接收传输装置的坐标值确定桥梁挠度。本方案提高了挠度测量的准确性，并实现了更方便快捷的远程桥梁挠度监测。
A bridge deflection measurement device and method are proposed. The device includes a computer terminal data processing system and a coordinate system construction system, a plurality of primary signal transmission and data reception and transmission devices, and at least one secondary information reception and transmission device; the primary The signal transmitting and data receiving and transmitting device has an electromagnetic wave signal transmitter to transmit electromagnetic wave signals; the at least one secondary information receiving and transmitting device is installed at the position of the bridge where the deflection of the bridge needs to be detected, and receives electromagnetic waves from the primary signal transmitting and data receiving and transmitting device signal, record the transmission and reception time of the electromagnetic wave signal; the computer terminal data processing system and the coordinate system construction system are determined according to the transmission and reception time of the electromagnetic wave signal and the coordinate values of multiple primary signal transmission and data reception and transmission devices Bridge deflection. This solution improves the accuracy of deflection measurement and realizes more convenient and quick remote bridge deflection monitoring.
Description
Technical field
The invention belongs to Bridge Inspection fields, and in particular to a kind of bridge deflection measurement device and method.
Background technique
With the development and social progress of China's economic strength, China's volume of transport also significantly increases.Bridge
As connection different regions, the tie of different terrain, important traffic effect is played.And the safety of bridge structure not only influences
National economy and social development, while the safety of the people of each trip can be also threatened, therefore the safety detection of bridge is to work as
For link indispensable in science of bridge building.
Having an important measure the item in bridge structure safe detection process is exactly the measurement of deflection of bridge span value, and amount of deflection is
The important indicator of bridge safty is evaluated, whether directly reflection bridge structure deformation exceeds risk range.Therefore bridge security inspection
Surveying has inseparable relationship with deflection value measurement, and the size of deflection value directly reflects the vertical overall stiffness of bridge structure.
After the deflection value for measuring each crucial section of bridge, the vertical deformation curve of bridge can be further obtained, judges each of bridge
A key section amount of deflection whether in safe range, to judge the safety of bridge entirety.It can be said that deflection of bridge span is in bridge
The evaluation of the safe status in be a very important measurement factor.
Currently used deflection metrology method has theodolite, level, dial gauge method, displacement sensor, is based on differential GPS
Amount of deflection detection, based on collimation laser amount of deflection detection etc., be widely used in bridge construction on-site test and check and accept identification in, but
These are with high costs, the simple measurement method of structure be only applicable to bridge measure in short term, manual measurement situations such as, take there are time-consuming
Power, big using difficulty, real-time measurement is difficult, measurement result it is affected by environment it is larger, precision is not high, for climatic environment require compared with
The problems such as high.
Summary of the invention
To solve the above-mentioned problems in the prior art, the present invention proposes a kind of bridge deflection measurement device and method.
The present invention establishes Regional coordinate system, and placement information transmitting and transmitting device feedback time information for bridge, from
And location information is obtained, the precise measurement of amount of deflection is finally carried out, and the micro-displacement that multiple point positions occur can be detected simultaneously,
By electronic information technology, the deflection value of the multiple positions of bridge is efficiently and rapidly detected.
Detailed description of the invention
Fig. 1 is bridge deflection measurement equipment scheme of installation according to an embodiment of the invention；
Fig. 2 is Measurement Methods Of Bridge Deflection execution flow chart according to an embodiment of the invention.
Specific embodiment
Referring first to Fig. 1, the equipment is illustrated according to the bridge deflection measurement equipment scheme of installation of one embodiment
Chief component and mounting means.
The bridge deflection measurement equipment mainly includes three component parts, respectively computer terminal data processing system and
Coordinate system constructs system 1, primary signal transmitting receives and transmitting device 3 with data receiver transmitting device 2 and secondary information.
The computer terminal data processing system and coordinate system building system 1, which refer to, initially sets and establishes coordinate and operation
The computer equipment of data itself needs to provide precise and stable coordinate system in the initial stage.In one embodiment, it is put
It sets in staff's control room or other places for facilitating staff to remotely operate, since the computer equipment passes through electronic signal
Transmission data are carried out, so equipment is placed in any firm place and is ok.The equipment has wireless data acquisition device, and
Signal transmission can be carried out by built-in wireless network card or bluetooth module, testing staff can pass through the computer terminal data
The amount of deflection variation degree of processing system and the coordinate system building long-range real-time detection bridge various pieces of system 1.
The primary signal transmitting and data receiver transmitting device 2, are at least installed at the beginning of 3 in firm abutment lower end position
The transmitting of grade signal and data receiver transmitting device (Fig. 1 is only schematic diagram, specific location can according to the actual situation depending on, as long as
Abutment upper position or position firm nearby).This device, which possesses, receives information and launch time information, transmitting electromagnetic wave
The function of signal also may include coordinate information in information.According to one embodiment, the device include electromagnetic wave signal transmitter,
Cpu controller, wireless network card and the single-chip microcontroller for recording the time etc., power supply unit can be provided by solar panel.Temporal
Determination can be controlled by computer terminal data processing system, the coordinate information of itself can be manually entered or pass through computer terminal
Data processing system manually changes numerical value.The transmitting of each primary signal can constantly be sent out with data receiver transmitting device 2
Signal out includes four data in the signal, itself X, Y, Z coordinate value and the temporal information for issuing signal.Each is primary
Signal transmitting is arranged different tranmitting frequencies from data receiver transmitting device 2 and distinguishes so that secondary information is received with transmitting device 3
What is received is the signal which primary signal transmitting emits with data receiver transmitting device 2, and different frequencies can be used as knowledge
The mark of not different emitters.
The secondary information, which is received, is mounted on the significant points for needing to detect deflection of bridge span with transmitting device 3, can basis
It needs to be mounted on multiple positions (3 shown in FIG. 1 merely illustrative), described device 3 and primary signal transmitting are passed with data receiver
Defeated 2 function of device is essentially identical, needs to receive the electromagnetic wave signal that primary signal transmitting emits with data receiver transmitting device 2,
And tracer signal arrival time.In addition, to be specifically which primary signal transmitting and data receiver transmitting device 2 convenient for differentiating
The electromagnetic wave signal of transmitting, secondary information receive that (3 only with the receiving sensors of 3 different frequencies is provided on transmitting device 3
For example, particular number can emit corresponding with the quantity of data receiver transmitting device 2 with primary signal), different positions are received respectively
The signal of the primary signal transmitting and data receiver transmitting device 2 of the transmitting different frequency set, and respective receiving time is recorded, most
Information is transferred to computer terminal data processing system at last.According to one embodiment, described device 3 includes for recording the time
Sensor, the wireless network card etc. of single-chip microcontroller and 3 reception different frequency signals can be sheet, can use the chip of button size
It is realized with wireless network transmissions equipment.Make to be fixed on required position in the method for paste, for example, utmostly reduces distance accidentally
Difference, it should be close to bridge bottom surface.Secondary information, which is received, not to be needed that coordinate value is arranged in advance with transmitting device 3, is opened after installation and is
It can be used, and uniformly provide electric energy by solar panel.
In addition, as described below, since scheme proposed by the present invention needs to be surveyed according to the time that signal sends and receives
Measure amount of deflection, so the time unification between each device is extremely important, therefore, system after the installation is completed, computer terminal data
Processing system and coordinate system building system 1 need to emit primary signal to be connect with data receiver transmitting device 2 and secondary information
Receive and time of transmitting device 3 calibrated, and settable half an hour or one hour carry out circulation calibration, with each equipment room more
The new unified time.
After installing above-mentioned three kinds of equipment, since primary signal transmitting and data receiver transmitting device 2 are measurements
The basic point of amount of deflection variation, therefore, after the origin position that measurement coordinate system has been determined (such as by bridge center line and ground
Intersection point is determined as origin position, the example be it is unrestricted, origin position can according to need random determination), according to each
Primary signal transmitting and installation site of the data receiver transmitting device 2 on bridge determine each primary signal transmitting and data
The coordinate information in each comfortable measurement coordinate system of transmitting device 2 is received, and as described above, can manually be inputted the coordinate information
The primary signal transmitting and data receiver transmitting device 2.The primary signal transmitting will be respective with data receiver transmitting device 2
Coordinate information be transferred to the computer terminal data processing system and coordinate system building system 1.
Each primary signal emits and counts based on the received for the computer terminal data processing system and coordinate system building system 1
According to the coordinate information and origin position for receiving transmitting device 2, coordinate unit length is set, measurement coordinate is established in system 1
System.
According to a kind of optional embodiment, after establishing coordinate system, the computer terminal data processing system and coordinate
It is that building system 1 can also emit each primary signal and the coordinate information of data receiver transmitting device 2 carries out position school again
Core.
As described above, the computer terminal data processing system and coordinate system building system 1 send system time
To mounted each primary signal transmitting and data receiver transmitting device 2 and each secondary information receives and transmitting device 3,
With the time of unified all devices.
In the deflection metrology stage, when having load action when bridge different location, multiple primary signals emit and number
Constantly emit signal according to transmitting device 2 is received, and the launch time for recording own transmission signal is respectively Ti, wherein i indicates i-th
A primary signal transmitting and data receiver transmitting device 2.The reception of each secondary information receives the multiple with transmitting device 3
Receiving time is denoted as t when different primary signal transmittings and the signal of data receiver transmitting device 2i, equally, i is indicated from i-th
The transmitting of a primary signal receives signal with data receiver transmitting device 2, and secondary information was received the time with transmitting device 3 later
Data are transferred to computer terminal data processing system and coordinate system building system 1；Computer terminal data processing system and coordinate system
Building system 1 is sent out according to multiple primary signal transmittings with the coordinate of data receiver transmitting device 2, multiple primary signals
It penetrates and issues the time of signal with data receiver transmitting device 2, secondary information receives and receives multiple primary with transmitting device 3
The receiving time of signal transmitting and the signal of data receiver transmitting device 2 obtains secondary information and receives with transmitting device 3 described
Measure the coordinate in coordinate system.It may be not that the secondary information obtained in different time period, which is received with the coordinate of transmitting device 3,
With, the difference between coordinate has meant that secondary information receives the variation with the deflection of bridge span of 3 position of transmitting device.
Specifically, computer terminal data processing system and coordinate system building system 1 can be by described in the acquisitions of following formula
Secondary information receives the coordinate value with transmitting device 3.
(x-xi)2+(y-yi)2+(z-zi)2=[(Ti-ti)·c]2(formula 1)
Wherein, x, y, z is the coordinate value of the secondary information reception and transmitting device 3 to be measured, xi、yi、ziIt is i-th
The coordinate value of a the primary signal transmitting and data receiver transmitting device 2, TiFor i-th of primary signal transmitting and data
Receive the time that transmitting device 2 emits signal, tiIt is received for the secondary information and receives i-th of primary with transmitting device 3
The receiving time for the signal that signal transmitting emits with data receiver transmitting device 2.
The wherein quantity at least three of the primary signal transmitting and data receiver transmitting device 2, in one embodiment,
The value of i can be 1,2,3.
In addition, as described above, needing the position measured to position for bridge and (installing the secondary information to receive
With transmitting device 3), and the amount of deflection information at multiple positions is continuously measured, data processing system and coordinate system structure in computer terminal
Build formation amount of deflection change curve image in system 1.This measuring technique can not only measure the deflection value of bridge, but also can obtain
The micro-displacement of bridge lateral out more comprehensively has detected the change in displacement that bridge is generated due to external influence, such as
The influence of natural environment and big load motor turning for pontic, the minute movement at any position of pontic can detect.
Measuring principle used by the application is as described below.
Determination for the spatial position of certain point, initial time need to establish coordinate system by 3 determining coordinate values,
Origin can set 3 primary signal transmittings and data receiver transmitting device 2 by manually determining in practical Bridge position first
Coordinate value, coordinate value can determine according to the measured value of bridge actual environment.Primary signal transmitting is passed with data receiver
Defeated device 2 is installed in the position measured, and coordinate data is transferred to computer terminal data processing system and coordinate system building
System 1 arranges that secondary information receives and transmitting device 3, the secondary letter of acquisition later in the position for needing to carry out bridge deflection measurement
Breath, which is received, to be solved with the position coordinates of transmitting device 3 according to range equation, i.e. formula 1.
(x-xi)2+(y-yi)2+(z-zi)2=[(Ti-ti)·c]2
The left side of equation is the range formula of two spaces point, calculates the transmitting of some primary signal with coordinate value algebraic expression
The distance between transmitting device 3 is received with data receiver transmitting device 2 to secondary information, (x, y, z) is unknown, (xi, yi,
zi) it is the transmitting of some primary signal and the coordinate value of data receiver transmitting device 2.Coordinate value (x, y, z) is exactly to need to solve
Unknown quantity, from equation it is found that at least needing the coordinate value ability with 3 primary signals transmitting and data receiver transmitting device 2
The equation is solved, to determine that 1 secondary information receives the coordinate value with transmitting device 3.With the range formula of two spaces point
One range equation of column, so being sat if there are 3 different primary signal transmittings in system with 2 position of data receiver transmitting device
Mark, then the equation group comprising 3 equations can be obtained.
The right of equation is signal transmitting with corresponding to receiving time difference at a distance from, when the transmitting of 1 primary signal with count
Secondary information reception is sent signal on transmitting device 2 on the position where transmitting device 3 according to receiving, this will generate this
The distance between two o'clock, the distance between two o'clock are to solve the condition of coordinate value.Signal emits from primary signal and data receiver
Transmitting device 2 is emitted to secondary information and receives with transmitting device 3, and electromagnetic wave is transmitted with the light velocity, tracer signal transmitting
Initial time and the termination time for receiving signal, that is, it may know that the time difference of signal transduction process, time difference transmit multiplied by signal
Speed can be obtained by distance between the two.Remaining 2 primary signal transmitting and data receiver transmitting device 2 are also according to phase
With step to get to the distance value on the right of another 2 equations, thus 3 equations of simultaneous, solve unknown coordinates value (x, y,
z)。
As described above, the transmitting of different primary signals can use different from 2 electromagnetic signal of data receiver transmitting device
Frequency transmission facilitates secondary information to receive with specifically which primary signal transmitting is distinguished in the identification of transmitting device 3 and connects with data
Receive the signal of transmitting device 2.Secondary information is received will receive different primary signal transmittings and data from transmitting device 3 each time
The time for receiving 2 signal of transmitting device records and is emitted to computer terminal data processing system and coordinate system building system 1.It will count
According to the equation brought into processing system, the three-dimensional coordinate of secondary information reception and transmitting device 3 is obtained.
Under represent an illustrative data record.
After bringing data into above-mentioned equation, according to first group of data it can be concluded that one group of solution, has thus obtained partial zones
Domain position secondary information receives the coordinate value with transmitting device 3.The value solved later with second group of data, the two makes the difference can
Obtain the changing value of the deflection of bridge span within the unit time.As shown in table 1, S1 obtains different coordinates according to two groups of different data
The difference of value, two coordinate values indicates the position S1 deflection of bridge span changing value.This is accurately calculating for spatial position,
After thering is the secondary information positioned at multiple points to receive in bridge bottom surface and three-dimensional coordinate is calculated simultaneously with transmitting device 3, just
The deflection of bridge span variation tendency of multiple positions can be drawn in data processing system, realize dynamic monitoring deflection of bridge span.
According to bridge deflection measurement equipment mentioned above, the invention also provides a kind of Measurement Methods Of Bridge Deflections, such as
Shown in Fig. 2, this method comprises:
Step 1 installs the transmitting of multiple primary signals and data receiver transmitting device at bridge, determine origin position and
The coordinate of the multiple primary signal transmitting and data receiver transmitting device.
Wherein, step 1, which may particularly include, manually determines origin position in bridge position and measures the multiple first
The coordinate of grade signal transmitting and data receiver transmitting device.
The respective coordinate of determining multiple primary signals transmitting and data receiver transmitting device is separately input by step 2
The transmitting of the multiple primary signal is with data receiver transmitting device, and primary signal transmitting and data receiver transmitting device are by coordinate
Information is transferred to computer terminal data processing system and coordinate system building system.
Step 3, computer terminal data processing system and coordinate system building system determine measurement according to the coordinate information of transmitting
Coordinate origin sets coordinate unit length, establishes appropriate measurement coordinate system in systems.
According to one embodiment, may also include after step 3 by have determined good position multiple primary signals transmitting with
Data receiver transmitting device carries out the transmission of coordinate information, is transferred to computer terminal data processing system and coordinate system building system
Carry out position checking.
Step 4, installed at the bridge basal surface position for needing to carry out deflection metrology one or more secondary informations receive with
Transmitting device, computer terminal data processing system and the unified the multiple primary signal transmitting of coordinate system building system connect with data
It receives transmitting device and secondary information receives and the time of transmitting device.
Step 5, the transmitting of the multiple primary signal constantly emit signal with data receiver transmitting device, and tracer signal
Launch time, secondary information, which is received, receives the multiple different primary signal transmittings and data receiver transmission dress from transmitting device
The transmitting and receiving time of the signal are recorded when the transmitting signal set, secondary information will receive when will emit and receive with transmitting device
Between be transferred to computer terminal data processing system and coordinate system building system.
Step 6, computer terminal data processing system and coordinate system building system according to multiple primary signals transmittings with
The coordinate of data receiver transmitting device, the transmitting of multiple primary signals and data receiver transmitting device signal launch time,
Secondary information receives the transmitting signal that multiple the primary signal transmittings and data receiver transmitting device are received with transmitting device
Receiving time, obtain secondary information receive and transmitting device it is described measurement coordinate system in coordinate.
Step 7, computer terminal data processing system and coordinate system building system constantly calculate the secondary information receive with
The coordinate value of transmitting device simultaneously makes the difference, and obtains amount of deflection variation.
In addition, after step 7, computer terminal data processing system and coordinate system building system can also be scratched to what is be calculated
Degree according to saved, error calculation, obtain true amount of deflection.
It is same to realize that details repeats no more since the above method is corresponding with above equipment.
Compared with prior art, the invention has the following advantages and beneficial effects:
(1) present invention, which directly can receive secondary information to be placed on transmitting device 3, multiple needs to detect deflection of bridge span
Position or important section, it is light and handy convenient, facilitate installation, reduces external environment to the greatest extent for the shadow of detection device
It rings.
(2) present invention constructs system 1 by computer terminal data processing system and coordinate system and constructs region independent three-dimensional seat
Mark system has measurement distance close, reduces the excellent of influence of the natural environment for ranging compared to other measuring devices such as GPS
Point.This independent three-dimensional coordinate can be set according to actual environment, and measurement range can cover most of different configuration form
Bridge structure.With electronic information technology, long-range detection deflection of bridge span variation is realized.
(3) present invention is by building region independent three-dimensional coordinate system, while detecting the bridge deflection of bridge span variation of multiple points,
Entire bridge bottom surface can be covered, the amount of deflection variation in different lanes is realized while detecting, finally in computer terminal data processing
The deflection of bridge span variation diagram that certain area segments is formed in system and coordinate system building system 1, realizes convenient and efficient comprehensive detection bridge
The healthy and safe situation of beam.
The above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although referring to above-described embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that: still the present invention can be modified or be waited
With replacement, without departing from the spirit or scope of the invention, or any substitutions, should all cover in power of the invention
In sharp claimed range.
Claims (10)
1. a kind of bridge deflection measurement equipment, it is characterised in that:
The bridge deflection measurement equipment includes computer terminal data processing system and coordinate system building system, multiple primary signals
Transmitting and data receiver transmitting device and the reception of at least one secondary information and transmitting device；
The primary signal transmitting is mounted at firm Bridge position with data receiver transmitting device, has electromagnetic wave signal hair
Emitter is with electromagnetic signals；
At least one described secondary information, which is received, is mounted on the Bridge position for needing to detect deflection of bridge span with transmitting device, receives and
From the electromagnetic wave signal of primary signal transmitting and data receiver transmitting device, when recording the transmitting and reception of the electromagnetic wave signal
Between；
The computer terminal data processing system and coordinate system building system are the computer equipment with wireless data acquisition device,
The computer terminal data processing system and coordinate system building system are used to be emitted according to the multiple primary signal and connect with data
The coordinate for receiving transmitting device establishes measurement coordinate system, the seat according to the multiple primary signal transmitting and data receiver transmitting device
It is marked with and secondary information receives and determines that secondary information receives with the transmitting of the electromagnetic wave signal of transmitting device record and receiving time
With the coordinate of transmitting device, and deflection of bridge span is determined according to changes in coordinates.
2. bridge deflection measurement equipment according to claim 1, it is characterised in that:
It is previously stored with the coordinate of itself in the primary signal transmitting and data receiver transmitting device, and the coordinate of itself is sent out
It send to the computer terminal data processing system and coordinate system building system, by the computer terminal data processing system and seat
Mark system building system establishes the measurement coordinate system.
3. bridge deflection measurement equipment according to claim 2, it is characterised in that:
The computer terminal data processing system and coordinate system building system are for unified the multiple primary signal transmitting and number
According to the time for receiving transmitting device and at least one secondary information reception and transmitting device.
4. bridge deflection measurement equipment according to claim 3, it is characterised in that:
Each primary signal transmitting has different electromagnetic waves from the electromagnetic wave signal transmitter of data receiver transmitting device
Signal tranmitting frequency, to make differentiation, the primary signal with data receiver transmitting device to the transmitting of the multiple primary signal
Transmitting continues electromagnetic signals with data receiver transmitting device, includes itself coordinate and the electricity in the electromagnetic wave signal
The launch time of magnetostatic wave signal.
5. bridge deflection measurement equipment according to claim 4, it is characterised in that:
Each of at least one secondary information reception and transmitting device all have the receiving sensor of n different frequency,
Wherein the numerical value of n and the transmitting of the multiple primary signal are identical as the quantity of data receiver transmitting device, each different frequency
Receiving sensor corresponds to the primary signal transmitting of the electromagnetic wave signal transmitter with corresponding frequencies and data receiver transmission fills
It sets.
6. bridge deflection measurement equipment according to claim 5, it is characterised in that:
The secondary information receives and transmitting device is received using the receiving sensor of different frequency from each primary letter
Number transmitting and the electromagnetic wave signal of data receiver transmitting device, record each primary signal transmitting and fill with data receiver transmission
Electromagnetic wave signal launch time for setting and the receiving time for receiving the electromagnetic wave signal, each primary signal is emitted
With the coordinate of data receiver transmitting device, each primary signal emit with the signal transmission time of data receiver transmitting device with
And receive the transmitting signal receiving time be sent to the computer terminal data processing system and coordinate system building system.
7. bridge deflection measurement equipment according to claim 6, it is characterised in that:
The computer terminal data processing system and coordinate system building system determine that secondary information is received and passed according to the following formula
The coordinate of defeated device:
(x-xi)2+(y-yi)2+(z-zi)2=[(Ti-ti)·c]2
Wherein, x, y, z is the coordinate value of the secondary information reception and transmitting device to be measured, xi、yi、ziDescribed in i-th
The coordinate value of primary signal transmitting and data receiver transmitting device, TiIt is passed for i-th of primary signal transmitting with data receiver
The time of defeated device transmitting signal, tiIt is received for the secondary information and receives i-th of primary signal transmitting with transmitting device
The receiving time of the signal emitted with data receiver transmitting device, wherein 1≤i≤n.
8. a kind of Measurement Methods Of Bridge Deflection, it is characterised in that:
Step 1 installs the transmitting of multiple primary signals and data receiver transmitting device at bridge, determines origin position and described
The coordinate of multiple primary signal transmittings and data receiver transmitting device；
Step 2, the respective coordinate of determining multiple primary signals transmitting and data receiver transmitting device is separately input into it is described
The transmitting of multiple primary signals is with data receiver transmitting device, and primary signal transmitting and data receiver transmitting device are by coordinate information
It is transferred to computer terminal data processing system and coordinate system building system；
Step 3, computer terminal data processing system and coordinate system building system determine measurement coordinate according to the coordinate information of transmitting
It is origin, sets coordinate unit length, establish appropriate measurement coordinate system in systems；
Step 4 installs one or more secondary informations receptions and transmission at the bridge basal surface position for needing to carry out deflection metrology
Device, computer terminal data processing system and the unified the multiple primary signal transmitting of coordinate system building system are passed with data receiver
Defeated device and secondary information receive the time with transmitting device；
Step 5, the transmitting of the multiple primary signal and data receiver transmitting device constantly emit signal, have certainly in the signal
The coordinate of body and the launch time of signal, secondary information, which is received, receives the multiple different primary signal transmittings from transmitting device
With the transmitting and receiving time for recording the signal when transmitting signal of data receiver transmitting device, secondary information is received to be filled with transmission
It sets and transmitting and receiving time is transferred to computer terminal data processing system and coordinate system building system；
Step 6, computer terminal data processing system and coordinate system building system are according to multiple primary signal transmittings and data
Receive the coordinate of transmitting device, launch time, the secondary of multiple the primary signal transmittings and data receiver transmitting device signal
Information is received to receive multiple primary signals with transmitting device and emit and be connect with the transmitting signal of data receiver transmitting device
Between time receiving, the coordinate of secondary information reception and transmitting device in the measurement coordinate system is obtained；
Step 7, computer terminal data processing system and coordinate system building system constantly calculate the secondary information and receive and transmit
The coordinate value of device simultaneously makes the difference, and obtains amount of deflection variation.
9. Measurement Methods Of Bridge Deflection according to claim 8, it is characterised in that:
Wherein step 1 include manually bridge position determine origin position and measure the transmitting of the multiple primary signal with
The coordinate of data receiver transmitting device.
10. Measurement Methods Of Bridge Deflection according to claim 9, it is characterised in that:
In step 6, the computer terminal data processing system and coordinate system building system determine secondary letter according to the following formula
Breath receives the coordinate with transmitting device:
(x-xi)2+(y-yi)2+(z-zi)2=[(Ti-ti)·c]2
Wherein, x, y, z is the coordinate value of the secondary information reception and transmitting device to be measured, xi、yi、ziDescribed in i-th
The coordinate value of primary signal transmitting and data receiver transmitting device, TiIt is passed for i-th of primary signal transmitting with data receiver
The time of defeated device transmitting signal, tiIt is received for the secondary information and receives i-th of primary signal transmitting with transmitting device
With the receiving time of data receiver transmitting device transmitting signal, wherein 1≤i≤n, wherein n is that primary signal transmitting connects with data
Receive the quantity of transmitting device.
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| CN109631809B (en) | 2021-03-05 |
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