CN109060197A - A kind of separated wireless transmission type vibration wire frequency plate reading with computing function - Google Patents
A kind of separated wireless transmission type vibration wire frequency plate reading with computing function Download PDFInfo
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- CN109060197A CN109060197A CN201810663360.8A CN201810663360A CN109060197A CN 109060197 A CN109060197 A CN 109060197A CN 201810663360 A CN201810663360 A CN 201810663360A CN 109060197 A CN109060197 A CN 109060197A
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- chip
- vibrating string
- monitoring
- type sensor
- string type
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/10—Measuring force or stress, in general by measuring variations of frequency of stressed vibrating elements, e.g. of stressed strings
- G01L1/103—Measuring force or stress, in general by measuring variations of frequency of stressed vibrating elements, e.g. of stressed strings optical excitation or measuring of vibrations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
- G01L11/04—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by acoustic means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
A kind of separated wireless transmission type vibration wire frequency plate reading with computing function, including gauge head and host, gauge head is used to be mounted on each wire of vibrating string type sensor, it is interior containing battery pack, excitation chain, pick-up circuit and Bluetooth communication modules, host includes single-chip data processing module, bluetooth receiving module, communication transmitting chip, power supply chip；Single-chip data processing module is according to calculation formula F=K(fi 2‑f0 2) calculate vibrating string type sensor stress or force value；F can be bracing members axle power, anchor cable axle power, the internal force of guard post, pore water pressure, soil pressure etc..The present invention can remote transmission monitoring data, save manpower；Gauge head is directly anchored on sensor conductor, can real-time monitoring, transmission data and alarm, facilitate each side's browsing to consult, prevented the possibility of data tampering, when can increase monitoring frequency, be able to satisfy the requirement of real-time monitoring；Sensor force value can be calculated automatically improves monitoring efficiency and intelligence degree without manually being calculated.
Description
Technical field
The present invention relates to a kind of, and the separated wireless with computing function transmits type vibration wire frequency plate reading, belongs to engineering prison
Survey technology field.
Background technique
In engineering construction, since excavation of foundation pit needs to carry out stress prison to supporting construction (support, anchor cable, fender post etc.)
Survey, with understand supporting construction whether safety and stability.Vibrating string type sensor is buried in supporting construction in advance, works as Supporting Structure deformation
When, the vibratory string frequency in built-in sensor will change, by the vibratory string frequency of type vibration wire frequency plate reading measurement sensor, from
And calculate the variation of its stress.
Be widely used in engineering at present vibrating string type sensor carry out base pit engineering monitoring, such as using reinforcing rib meter,
Strain gauge measures the internal force of guard post, supports axial compressive force using axle power measurement dimension, uses the pulling force of rope meter measurement anchor cable.Vibration
String type sensor is generally embedded to fender post, in concrete support or is placed in bracing members and anchor cable end, and sensor conductor draws
The position that foundation pit top is convenient for measuring is arrived out.When the old-fashioned type vibration wire frequency plate reading of tradition measures, need gauge head and
Host is connected using conducting wire, is then carried out vibrating string type sensor conducting wire one by one using the clip of gauge head and is measured, then will adopt
The frequency record of collection finally calculates sensor stress or force value, Comparision is cumbersome on minute book.It is built etc. in subway, room big
Monitoring point is large number of in type foundation pit, larger workload, uses conventional methods in the presence of a large amount of manpower of waste, inefficiency,
Data in measurement process such as are easy to distort at the outstanding problems.When foundation pit is caused danger, it can not accomplish real-time monitoring.
Summary of the invention
For the deficiency of traditional acquisition mode, the present invention devises a kind of separated wireless transmission with computing function
Type vibration wire frequency plate reading long-range, in real time can measure the vibrating string type sensor being mounted in foundation pit enclosure structure, and
And the stress or force value of sensor can be directly calculated, manpower can be greatly saved, monitoring efficiency and accuracy are improved.
A kind of separated wireless with computing function transmits type vibration wire frequency plate reading, it is characterised in that including gauge head and
Host；
Contain battery pack, excitation chain, pick-up circuit and Bluetooth communication modules in the gauge head, the gauge head is for being mounted on vibration
In each wire of string type sensor, to transmit frequency values to host in real time；Vibrating string type sensor, which is then used to be mounted on, goes along with sb. to guard him knot
On structure, usual each vibrating string type sensor usually has 2 ~ 4 conducting wires, and vibrating string type sensor quantity is true according to design drawing
It is fixed.
The excitation chain carries out exciting, institute to the vibrating string type sensor based on the sweeping interference of ICL8038
The pick-up circuit stated uses magnetoelectricity type pendulum-type vibration pickup, and the vibration signal that vibrating string type sensor issues is converted electric signal by it,
The electric signal that pick-up circuit generates is wirelessly transmitted to the bluetooth receiving module of host by the Bluetooth communication modules；
The host includes using single-chip microcontroller as the single-chip data processing module and bluetooth receiving module of control centre, communication
Transmitting chip, power supply chip；Power supply chip receives mould for receiving external power supply, and for single-chip data processing module, bluetooth
Block, communication transmitting chip are powered；
Single-chip data processing module receives the data that each gauge head issues by bluetooth receiving module, then according to calculation formula
F=K(fi 2-f0 2) calculate vibrating string type sensor stress or force value；
Wherein, F can be steel support shaft power, anchor cable axle power, the internal force of guard post, pore water pressure, soil pressure etc.；
K is the calibration coefficient of vibrating string type sensor, is input in host in advance；
f0For the original frequency of vibrating string type sensor, it is input in host in advance；
Fi is the frequency for the vibrating string type sensor that gauge head acquires in real time；
Since the sensor of bracing members axle power, the internal force of guard post, pore water pressure, Monitoring on Earth Pressure project has 2 conducting wires, measurement
1 frequency values is obtained, according to calculation formula F=K(fi 2-f0 2) it can directly calculate the stress or force value of sensor；Anchor cable axis
Force snesor has 4 conducting wires, 3 frequency values is measured to obtain, according to calculation formula F=K(fi 2-f0 2) calculate 3 F values after, into
Row mean value calculation can obtain anchor cable axle power value.
Therefore, the application of the separated wireless transmission type vibration wire frequency plate reading with computing function, feature
It is the plate reading in axial force of the supports, the internal force of guard post, pore water pressure, soil pressure or anchor cable axle power monitoring project
Application.
The bluetooth receiving module controls chip CSR BC6130 using bluetooth BLE.
The communication transmitting chip uses 4G radiation pattern, and calculated force value is transmitted signal by 4G and is sent to by host
Server and the risk monitoring and control platform of construction unit, when monitoring data meet or exceed alarming value, immediately to each side's hair of taking part in building
Short message is sent to carry out alert notice.
The single-chip data processing module uses MSP430 single-chip microcontroller, and arithmetic speed is fast, low in energy consumption, using C language
The data processing program of establishment, calculates received frequency values, and sends communication hair for the data being calculated
In core shooting piece, calculation uses formula F=K(fi 2-f0 2), K be vibrating string type sensor calibration coefficient (definite value, it is defeated in advance
Enter to the single-chip data processing module of host), f0For the original frequency of vibrating string type sensor, (definite value is input to master in advance
In machine single-chip data processing module), fiFor the frequency for the vibrating string type sensor that gauge head acquires in real time.
Compared with prior art, the beneficial effects of the present invention are:
(1) manpower can be saved with remote transmission monitoring data；
(2) gauge head is directly anchored on sensor conductor, and data, and real-time transmission data can be monitored in real time, and is encountering engineering
When risk needs to increase monitoring frequency, it is able to satisfy the requirement of real-time monitoring；
(3) sensor force value can be calculated automatically improve monitoring efficiency and intelligence degree without manually being calculated；
(4) data real-time transmission will be calculated to the risk monitoring and control platform of server and construction unit by 4G network, facilitates each side
Personnel carry out browsing access, and a possibility that prevented data tampering；
(5) when monitoring data meet or exceed alarming value, (alarming value determines that alarm threshold value is arranged in risk according to design drawing
In monitor supervision platform) when, short message is sent to each side that takes part in building immediately and carries out alert notice, and each side that enables to take part in building carries out safe disposal in time
Measure.
Detailed description of the invention
Fig. 1 is frequency plate reading structure chart of the invention.
Fig. 2 is the connection schematic diagram of this frequency plate reading and its external vibrating string type sensor, server, power supply.
Wherein, battery pack 1, excitation chain 2, pick-up circuit 3, Bluetooth communication modules 4, bluetooth receiving module 5, single-chip microcontroller number
According to processing module 6, communication transmitting chip 7, power supply chip 8.
Specific embodiment
As shown in Figure 1, 2, a kind of separated wireless with computing function transmits type vibration wire frequency plate reading (dotted line frame
It is interior, consist of two parts), including gauge head and host, and gauge head is separated from each other with host；Wherein gauge head includes battery pack 1, exciting
Circuit 2, pick-up circuit 3, Bluetooth communication modules 4；Host includes bluetooth receiving module 5, single-chip data processing module 6, communication
Transmitting chip 7, power supply chip 8.
The gauge head is used to be mounted on each wire of vibrating string type sensor, to transmit frequency values to host in real time；
The excitation chain 2 carries out exciting to the vibrating string type sensor based on the sweeping interference of ICL8038；Described
Pick-up circuit 3 uses magnetoelectricity type pendulum-type vibration pickup, and the vibration signal that vibrating string type sensor issues is converted electric signal by it；It is described
The electric signal that pick-up circuit 3 generates is wirelessly transmitted to the bluetooth receiving module 5 of host by Bluetooth communication modules 4；
The host includes single-chip data processing module 6, bluetooth receiving module 5, communication transmitting chip 7, power supply chip 8；Electricity
Source chip 8 for receiving external power supply, and for single-chip data processing module 6, bluetooth receiving module 5, communication transmitting chip 7 into
Row power supply；
Single-chip data processing module 6 receives the data that each gauge head issues by bluetooth receiving module 5, then public according to calculating
Formula F=K(fi 2-f0 2) calculate vibrating string type sensor stress or force value, wherein F be stress or force value, K is vibrating string type sensor
Calibration coefficient, be input in host in advance；f0For the original frequency of vibrating string type sensor, it is input in host in advance；Fi is
The frequency for the vibrating string type sensor that gauge head acquires in real time.
The separated wireless with computing function transmits type vibration wire frequency plate reading, it is characterised in that the indigo plant
Tooth receiving module 5 controls chip CSR BC6130 using bluetooth BLE.
The separated wireless with computing function transmits type vibration wire frequency plate reading, it is characterised in that the communication
Transmitting chip 7 uses the radiation pattern of 4G.
The separated wireless with computing function transmits type vibration wire frequency plate reading, it is characterised in that the list
Piece machine data processing module 6 uses MSP430 single-chip microcontroller, and arithmetic speed is fast, low in energy consumption.
The battery pack 1 can periodically charge to it using the lithium battery of small size；
The Bluetooth communication modules 4 are made of wireless transmitting unit, link control unit.
The application of the separated wireless transmission type vibration wire frequency plate reading with computing function, it is characterised in that institute
The plate reading stated answering in axial force of the supports, the internal force of guard post, pore water pressure, soil pressure or anchor cable axle power monitoring project
With.
It is special using the method for the plate reading monitoring axial force of the supports, the internal force of guard post, pore water pressure or soil pressure
Sign is that wherein exciting, Ling Yigen will be played as baseline by a conducting wire using the vibrating string type sensor with 2 conducting wires
Conducting wire is the frequency received after exciting, 1 frequency values is measured in real time in monitoring process, according to calculation formula F=K(fi 2-f0 2)
Directly calculate the stress or force value of vibrating string type sensor, the stress or force value, that is, axial force of the supports, the internal force of guard post, pore water pressure
Power or soil pressure.
Utilize the method for the plate reading monitoring anchor cable axle power, it is characterised in that using the type vibration wire with 4 conducting wires
Sensor wherein will play exciting as baseline by a conducting wire, and in addition three conducting wires are the frequency received after exciting, monitoring
3 frequency values are measured in real time in the process, according to calculation formula F=K(fi 2-f0 2) calculate three stress of vibrating string type sensor
Or force value, mean value calculation is carried out to get anchor cable axle power value.
The monitoring method, it is characterised in that further include that after Framework computing goes out stress or force value, signal is transmitted by 4G
It is sent to the risk monitoring and control platform of server and construction unit, when monitoring data meet or exceed preset alarming value, immediately
Short message, which is sent, to each side that takes part in building carries out alert notice.
Claims (8)
1. a kind of separated wireless with computing function transmits type vibration wire frequency plate reading, it is characterised in that including gauge head and master
Machine；
Contain battery pack (1), excitation chain (2), pick-up circuit (3) and Bluetooth communication modules (4), the gauge head in the gauge head
For being mounted on each wire of vibrating string type sensor, to transmit frequency values to host in real time；
The excitation chain (2) carries out exciting to the vibrating string type sensor based on the sweeping interference of ICL8038；It is described
Pick-up circuit (3) use magnetoelectricity type pendulum-type vibration pickup, it by vibrating string type sensor issue vibration signal be converted into electric signal；
The electric signal that pick-up circuit (3) generates is wirelessly transmitted to the bluetooth receiving module (5) of host by the Bluetooth communication modules (4)；
The host includes single-chip data processing module (6), bluetooth receiving module (5), communication transmitting chip (7), power supply core
Piece (8)；Power supply chip (8) for receiving external power supply, and for single-chip data processing module (6), bluetooth receiving module (5),
Communication transmitting chip (7) is powered；
Single-chip data processing module (6) receives the data that each gauge head issues by bluetooth receiving module (5), then according to meter
Calculate formula F=K(fi 2-f0 2) calculate vibrating string type sensor stress or force value, wherein F be stress or force value, K be type vibration wire pass
The calibration coefficient of sensor, is input in host in advance；f0For the original frequency of vibrating string type sensor, it is input in host in advance；
Fi is the frequency for the vibrating string type sensor that gauge head acquires in real time.
2. the separated wireless with computing function transmits type vibration wire frequency plate reading as described in claim 1, feature exists
Chip CSR BC6130 is controlled using bluetooth BLE in the bluetooth receiving module (5).
3. the separated wireless with computing function transmits type vibration wire frequency plate reading as described in claim 1, feature exists
The radiation pattern of 4G is used in communication transmitting chip (7).
4. the separated wireless with computing function transmits type vibration wire frequency plate reading as described in claim 1, feature exists
MSP430 single-chip microcontroller is used in the single-chip data processing module (6), arithmetic speed is fast, low in energy consumption.
5. the application of the separated wireless transmission type vibration wire frequency plate reading described in claim 1 with computing function, special
Sign is the plate reading in axial force of the supports, the internal force of guard post, pore water pressure, soil pressure or anchor cable axle power monitoring project
In application.
6. utilizing the side of plate reading monitoring axial force of the supports described in claim 1, the internal force of guard post, pore water pressure or soil pressure
Method, it is characterised in that using the vibrating string type sensor with 2 conducting wires, wherein exciting will be played as baseline by a conducting wire,
Another conducting wire is the frequency received after exciting, 1 frequency values is measured in real time in monitoring process, according to calculation formula F=K
(fi 2-f0 2) directly calculate the stress or force value of vibrating string type sensor, the stress or force value, that is, axial force of the supports, the internal force of guard post,
Pore water pressure or soil pressure.
7. the method for utilizing plate reading monitoring anchor cable axle power described in claim 1, it is characterised in that using has 4 conducting wires
Vibrating string type sensor wherein will play exciting as baseline by a conducting wire, and in addition three conducting wires are the frequencies received after exciting
Rate measures 3 frequency values in monitoring process, according to calculation formula F=K(f in real timei 2-f0 2) calculate vibrating string type sensor
Three stress or force value carry out mean value calculation to get anchor cable axle power value.
8. monitoring method as claimed in claims 6 or 7, it is characterised in that further include leading to after Framework computing goes out stress or force value
The risk monitoring and control platform that 4G transmission signal is sent to server and construction unit is crossed, when monitoring data meet or exceed preset report
When alert value, short message is sent to each side that takes part in building immediately and carries out alert notice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810663360.8A CN109060197A (en) | 2018-06-25 | 2018-06-25 | A kind of separated wireless transmission type vibration wire frequency plate reading with computing function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810663360.8A CN109060197A (en) | 2018-06-25 | 2018-06-25 | A kind of separated wireless transmission type vibration wire frequency plate reading with computing function |
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| CN109060197A true CN109060197A (en) | 2018-12-21 |
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| CN201810663360.8A Pending CN109060197A (en) | 2018-06-25 | 2018-06-25 | A kind of separated wireless transmission type vibration wire frequency plate reading with computing function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112177061A (en) * | 2020-09-25 | 2021-01-05 | 北京大成国测科技有限公司 | System and method for monitoring microscopic horizontal deformation under complex geological structure |
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| CN107966223A (en) * | 2017-11-15 | 2018-04-27 | 东南大学 | A kind of vibrating wire sensor exciting optimization method and vibratory string harvester |
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