CN110211328A - A kind of structural collapse early warning system and method based on acceleration information - Google Patents
A kind of structural collapse early warning system and method based on acceleration information Download PDFInfo
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- CN110211328A CN110211328A CN201910566956.0A CN201910566956A CN110211328A CN 110211328 A CN110211328 A CN 110211328A CN 201910566956 A CN201910566956 A CN 201910566956A CN 110211328 A CN110211328 A CN 110211328A
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- acceleration
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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
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
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Abstract
The present invention discloses a kind of structural collapse early warning system and method based on acceleration information, and whether solve the problems, such as that the prior art can not be prejudged out accurately can be collapsed to be unfavorable for the expansion of fireman's rescue and relief work by fiery building structure.Structure of the invention early warning system of collapsing includes Wireless Acceleration Sensor, wireless signal receiver, converter, PC machine and acoustooptic alarm, the collected acceleration information of Wireless Acceleration Sensor is converted to acceleration-time curve by PC machine, then converts it into the curve that structure frequency changes over time by Hilbert algorithm.When sharply declining occurs in frequency versus time curve, control acoustooptic alarm runs early warning.The configuration of the present invention is simple, design is scientific and reasonable, easy to use, can make accurate anticipation to by fiery building collapse, and when anticipation is existed by fire building and collapses risk, carry out early warning, at the first time to ensure the life security of fire fighter.
Description
Technical field
The present invention relates to a kind of structural collapse early warning system and method based on acceleration information.
Background technique
After building kindling, fireman, which needs to enter to be built by fire at the first time, carries out rescue and relief work.However, catching fire in building
Afterwards, building structure is with collapsing risk, the prior art can not accurately prejudge out building structure whether can collapse, Yi Jihe
When can collapse, only judge that judgment accuracy is undesirable with the experience of live fireman, probability of miscarriage of justice is high, is unfavorable for
The expansion of fireman's rescue and relief work.
Therefore, a kind of structural collapse early warning system and method based on acceleration information is designed, is done to by fiery building collapse
Precisely anticipation out, and when anticipation is existed by fire building and collapses risk, early warning is carried out, at the first time to ensure fire fighter's
Life security becomes skilled artisan's technical problem urgently to be resolved.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of structural collapse early warning system based on acceleration information and side
Method, whether the solution prior art can not be prejudged out accurately can be collapsed to rescue to be unfavorable for fireman and speedily carry out rescue work by fiery building structure
The problem of calamity work expansion.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of structural collapse early warning system based on acceleration information is set to the wireless acceleration by fire building including several
Sensor is spent, respectively with all Wireless Acceleration Sensors by the wireless signal receiver of wireless connection, with the nothing
The converter of line signal receiver connection, the PC machine being connect with the converter, and the acousto-optic being connect with the PC machine
Alarm device；The acceleration signal monitored is passed sequentially through the reception of wireless signals by all Wireless Acceleration Sensors
Device and the converter are sent to the PC machine, and the PC machine is built-in with acceleration information transfer algorithm, will receive
Acceleration signal data are converted into structure frequency-time graph in real time, and when structure frequency-time graph appearance sharply declines
When control acoustooptic alarm operation early warning.
Further, in all Wireless Acceleration Sensors, with by fire building in fire floor contiguous floors four
The Wireless Acceleration Sensor there are four at least arranging in week is at least arranged by fire building roof quadrangle and is wirelessly added there are four described
At least one is respectively disposed in velocity sensor, with the bean column nodes of fire floor contiguous floors, floor center and girder span
The Wireless Acceleration Sensor.
Further, the Wireless Acceleration Sensor is integrated with magnet base.
Further, Wireless Acceleration Sensor is arranged to by fire and is built, by wireless signal receiver respectively with institute
There is the Wireless Acceleration Sensor to be wirelessly connected, Wireless Acceleration Sensor real-time monitoring is built acceleration signal everywhere by fire
And the acceleration signal monitored being passed sequentially through into wireless signal receiver and converter is sent to PC machine, PC machine will receive
To acceleration signal by acceleration information transfer algorithm be transformed into real time structure frequency-time graph and by the structure frequency
Rate-time graph is shown that control acousto-optic is alert when sharply declining occurs in structure frequency-time graph on PC machine display screen
Device is reported to run early warning.
Further, at least arrange that four radio accelerations sense with by the adjacent floor surrounding of fire floor in fire building
Device is respectively arranged at least one Wireless Acceleration Sensor by fire building roof quadrangle, adjacent with by fire floor in fire building
At least one Wireless Acceleration Sensor is respectively arranged in the bean column node of floor, floor center and girder span.
Further, when PC machine receives the acceleration signal of Wireless Acceleration Sensor transmission, at any time by acceleration
Between the curve that changes shown on PC machine display screen.
Further, the acceleration information transfer algorithm is as follows:
If the collected acceleration signal of acceleration transducer is denoted as x (t), analytic signal w (t) can be indicated are as follows:
W (t)=x (t)+jH (x (t))；
Wherein, j is the imaginary unit in plural number, and H (x (t)) is the Hilbert transform of signal x (t), expression formula are as follows:
Wherein, t indicates the time, and d is differential sign, and X (τ) is acceleration signal, and τ is time integral variable；
By analytic signal polar coordinate representation are as follows:
W (t)=M (t) ejP(t)；
Wherein, e is natural constant, and j is the imaginary unit of plural number, and M and P are when being write analytic signal as polar form
Two variables；
Wherein,
P (t)=Tan-1(H(x(t))/x(t))；
The expression formula of the real-time architecture frequency-time F (t) of fire floor are as follows:
F (t)=d (P (t))/dt；
Wherein, d is differential sign.
Compared with prior art, the invention has the following advantages:
The configuration of the present invention is simple, design is scientific and reasonable, easy to use, can make accurate anticipation to by fiery building collapse, and
And when anticipation is existed by fire building and collapses risk, early warning is carried out, at the first time to ensure the life security of fire fighter.
Structure of the invention early warning system of collapsing includes Wireless Acceleration Sensor, wireless signal receiver, converter, PC
Machine and acoustooptic alarm, Wireless Acceleration Sensor are integrated with magnet base, can make radio acceleration using the magnetism of magnet base
Sensor quick adsorption facilitates fire fighter to arrange Wireless Acceleration Sensor in the steel construction by fire building, wireless to accelerate
The acceleration signal monitored is passed sequentially through wireless signal receiver with degree sensor and converter is sent to PC machine, and AD turns
The analog signal of sensor is converted into the accessible data-signal of PC machine by parallel operation, and PC machine is built-in with acceleration information conversion and calculates
The acceleration signal data received are converted into structure frequency-time graph by method in real time, when frequency versus time curve occurs suddenly
Control acoustooptic alarm runs early warning when play decline, early warning accurately and timely, fire fighter receive after pre-warning signal can first when
Between withdraw and built by fire, can effective guarantee fire fighter life security.
Detailed description of the invention
Fig. 1 is that structure of the invention is collapsed early warning system structural schematic diagram.
Wherein, the corresponding title of appended drawing reference are as follows:
1- Wireless Acceleration Sensor, 2- wireless signal receiver, 3-AD converter, 4-PC machine, 5- acoustooptic alarm, 6-
It is built by fire.
Specific embodiment
The invention will be further described with embodiment for explanation with reference to the accompanying drawing, and mode of the invention includes but not only limits
In following embodiment.
As shown in Figure 1, a kind of structural collapse early warning system based on acceleration information provided by the invention, structure is simple,
Design is scientific and reasonable, easy to use, can make accurate anticipation to by fiery building collapse, and existed in anticipation by fire building and collapsed
When risk, early warning is carried out, at the first time to ensure the life security of fire fighter.If structure of the invention is collapsed, early warning system includes
Dry is set to by the Wireless Acceleration Sensor 1 at fire building 6, passes through nothing with all Wireless Acceleration Sensors 1 respectively
The wireless signal receiver 2 of line connection, the converter 3 being connect with the wireless signal receiver 2, with the converter 3
The PC machine 4 of connection, and the acoustooptic alarm 5 being connect with the PC machine 4；The Wireless Acceleration Sensor 1 is integrated with magnetic force
Seat integrates magnet base in the Wireless Acceleration Sensor 1, can be convenient and arranges Wireless Acceleration Sensor to by fire and build
It builds, can make Wireless Acceleration Sensor quick adsorption in the steel construction by fire building using the magnetism of magnet base, own
The acceleration signal monitored is passed sequentially through the wireless signal receiver 2 and described by the Wireless Acceleration Sensor 1
Converter 3 is sent to the PC machine 4, and the PC machine 4 is built-in with acceleration information transfer algorithm, the acceleration that will be received
Signal data is converted into structure frequency-time graph in real time, and controls when structure frequency-time graph occurs and sharply declining
The acoustooptic alarm 5 runs early warning.
In all Wireless Acceleration Sensors 1 of the present invention, with the surrounding by fire floor contiguous floors in fire building
The Wireless Acceleration Sensor 1 there are four at least arranging at least is arranged by fire building roof quadrangle and is wirelessly added there are four described
Velocity sensor 1 is respectively arranged with by the bean column nodes of fire floor contiguous floors, floor center and girder span in fire building
There is at least one described Wireless Acceleration Sensor 1.
Structure of the invention early warning system of collapsing includes Wireless Acceleration Sensor, wireless signal receiver, converter, PC
Machine and acoustooptic alarm, Wireless Acceleration Sensor are integrated with magnet base, can make radio acceleration using the magnetism of magnet base
Sensor quick adsorption facilitates fire fighter to arrange Wireless Acceleration Sensor in the steel construction by fire building, wireless to accelerate
The acceleration signal monitored is passed sequentially through wireless signal receiver with degree sensor and converter is sent to PC machine, and AD turns
The analog signal of sensor is converted into the accessible data-signal of PC machine by parallel operation, and PC machine is built-in with acceleration information conversion and calculates
The acceleration signal data received are converted into structure frequency-time graph by method in real time, when structure frequency-time graph goes out
Control acoustooptic alarm runs early warning when now sharply declining, and accurately and timely, fire fighter receives after pre-warning signal can for early warning
One time withdrew fire floor, can effective guarantee fire fighter life security.
The method for early warning of structural collapse early warning system provided by the invention based on acceleration information, radio acceleration is passed
Sensor is arranged to by fiery Architectural Services Department, when arranging Wireless Acceleration Sensor, the floor surrounding at least cloth adjacent with fire floor
Four Wireless Acceleration Sensors are set, roof quadrangle is respectively arranged at least one Wireless Acceleration Sensor, with fire floor phase
At least one Wireless Acceleration Sensor is respectively arranged at the bean column nodes of adjacent floors, floor center and girder span.Wireless signal connects
It receives device to be wirelessly connected with all Wireless Acceleration Sensors respectively, Wireless Acceleration Sensor real-time monitoring catches fire building everywhere
The acceleration signal monitored is simultaneously passed sequentially through wireless signal receiver and converter is sent to PC machine by acceleration signal,
When PC machine receives the acceleration signal of Wireless Acceleration Sensor transmission, the curve that acceleration is changed over time is in PC machine
It is shown on display screen, the acceleration signal received is transformed into structure by acceleration information transfer algorithm by PC machine in real time
Frequency versus time curve simultaneously shows the frequency versus time curve on PC machine display screen, when frequency versus time curve occurs suddenly
Control acoustooptic alarm runs early warning when play decline.
Acceleration information transfer algorithm of the present invention is as follows:
If the collected acceleration signal of acceleration transducer is denoted as x (t), analytic signal w (t) can be indicated are as follows:
W (t)=x (t)+jH (x (t))；
Wherein, j is the imaginary unit in plural number, and H (x (t)) is the Hilbert transform of signal x (t), expression formula are as follows:
Wherein, t indicates the time, and d is differential sign, and X (τ) is acceleration signal, and τ is time integral variable；
By analytic signal polar coordinate representation are as follows:
W (t)=M (t) ejP(t)；
Wherein, e is natural constant, and j is the imaginary unit of plural number, and M and P are when being write analytic signal as polar form
Two variables；
Wherein,
P (t)=Tan-1(H(x(t))/x(t))；
The expression formula of the real-time architecture frequency-time F (t) of fire floor are as follows:
F (t)=d (P (t))/dt；
Wherein, d is differential sign.
For the present invention when carrying out Wireless Acceleration Sensor laying, customization has the Wireless Acceleration Sensor of magnet base,
It can be with quick adsorption on steel construction or gluing is on other structures component；It is arranged in the floor surrounding adjacent with fire floor
4 Wireless Acceleration Sensors are arranged in as far as possible at the top of pillar；1 Wireless Acceleration Sensor is respectively arranged at 4 angles of roof；
Other to need to pay close attention to position, such as bean column node, floor center, girder span are medium respectively arranges that at least one radio acceleration senses
Device.The collected acceleration information of Wireless Acceleration Sensor is converted to acceleration-time curve by PC machine, then passes through Hilbert
Algorithm converts it into the curve that structure frequency changes over time.Acousto-optic is controlled when frequency versus time curve occurs and sharply declining
Alarm device runs early warning.
For method for early warning of the present invention to accurate by fiery building collapse early warning, whole process is smooth efficiently, can fall by fire building
The valuable departure time is won before collapsing for fire fighter.Suitable for wideling popularize application in the art.
Above-described embodiment is only one of the preferred embodiment of the present invention, should not be taken to limit protection model of the invention
It encloses, as long as that in body design thought of the invention and mentally makes has no the change of essential meaning or polishing, is solved
The technical issues of it is still consistent with the present invention, should all be included within protection scope of the present invention.
Claims (7)
1. a kind of structural collapse early warning system based on acceleration information, which is characterized in that be set to including several and built by fire
Wireless Acceleration Sensor (1), respectively with all Wireless Acceleration Sensors (1) by be wirelessly connected wireless signal
Receiver (2), the converter (3) being connect with the wireless signal receiver (2), the PC being connect with the converter (3)
Machine (4), and the acoustooptic alarm (5) being connect with the PC machine (4)；All Wireless Acceleration Sensors (1) will be supervised
The acceleration signal measured passes sequentially through the wireless signal receiver (2) and the converter (3) is sent to the PC machine
(4), the PC machine (4) is built-in with acceleration information transfer algorithm, and the acceleration signal data received are converted into real time
Structure frequency-time graph, and the acoustooptic alarm (5) are controlled when structure frequency-time graph occurs and sharply declining
Run early warning.
2. a kind of structural collapse early warning system based on acceleration information according to claim 1, which is characterized in that all
In the Wireless Acceleration Sensor (1), at least arrange that there are four institutes with by the surrounding of fire floor contiguous floors in fire building
Wireless Acceleration Sensor (1) is stated, is at least arranged by fire building roof quadrangle there are four the Wireless Acceleration Sensor (1),
At least one described wireless acceleration is respectively disposed with the bean column nodes of fire floor contiguous floors, floor center and girder span
It spends sensor (1).
3. a kind of structural collapse early warning system based on acceleration information according to claim 2, which is characterized in that described
Wireless Acceleration Sensor (1) is integrated with magnet base.
4. the method for early warning of the structural collapse early warning system based on acceleration information according to claim 1 to 3,
Built it is characterized in that, arranging Wireless Acceleration Sensor to by fire, by wireless signal receiver respectively with it is all described
Wireless Acceleration Sensor is wirelessly connected, and Wireless Acceleration Sensor real-time monitoring is by fire building acceleration signal and by institute everywhere
The acceleration signal monitored passes sequentially through wireless signal receiver and converter is sent to PC machine, and PC machine adds what is received
Speed signal by acceleration information transfer algorithm was transformed into structure frequency-time graph and in real time by the structure frequency-time
Curve is shown that control acoustooptic alarm is transported when sharply declining occurs in structure frequency-time graph on PC machine display screen
Row early warning.
5. method for early warning according to claim 4, which is characterized in that when arranging Wireless Acceleration Sensor, and by fire
The adjacent floor surrounding of fire floor at least arranges four Wireless Acceleration Sensors in building, by fire building roof quadrangle difference
At least one Wireless Acceleration Sensor is arranged, and by the bean column nodes of fire floor contiguous floors, floor center in fire building
With at least one Wireless Acceleration Sensor is respectively arranged in girder span.
6. method for early warning according to claim 5, which is characterized in that when PC machine receives Wireless Acceleration Sensor transmission
Acceleration signal when, the curve that acceleration changes over time is shown on PC machine display screen.
7. according to method for early warning described in claim 4-6, which is characterized in that the acceleration information transfer algorithm is as follows:
If the collected acceleration signal of acceleration transducer is denoted as x (t), analytic signal w (t) can be indicated are as follows:
W (t)=x (t)+jH (x (t))；
Wherein, j is the imaginary unit in plural number, and H (x (t)) is the Hilbert transform of signal x (t), expression formula are as follows:
Wherein, t indicates the time, and d is differential sign, and X (τ) is acceleration signal, and τ is time integral variable；
By analytic signal polar coordinate representation are as follows:
W (t)=M (t) ejP(t)；
Wherein, e is natural constant, and j is the imaginary unit of plural number, and M and P are two when analytic signal to be write as to polar form
Variable；
Wherein,
P (t)=Tan-1(H(x(t))/x(t))；
The expression formula of the real-time architecture frequency-time F (t) of fire floor are as follows:
F (t)=d (P (t))/dt；
Wherein, d is differential sign.
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| CN201910566956.0A CN110211328A (en) | 2019-06-27 | 2019-06-27 | A kind of structural collapse early warning system and method based on acceleration information |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102507121A (en) * | 2011-11-23 | 2012-06-20 | 浙江大学 | Building structure seismic damage assessment system and method based on wireless sensor network |
| CN104376881A (en) * | 2014-11-20 | 2015-02-25 | 西安交通大学 | Nuclear power plant loose part positioning method based on Hilbert transform and data screening |
| CN108931262A (en) * | 2018-06-01 | 2018-12-04 | 北京华工信息技术有限公司 | It is a kind of for monitoring the optical fiber sensing system of structural safety |
| JP2019079278A (en) * | 2017-10-25 | 2019-05-23 | 矢崎エナジーシステム株式会社 | Alarm and alarm system |
| CN109858122A (en) * | 2019-01-21 | 2019-06-07 | 北京科技大学 | Consider that Earthquake Secondary leaves the road evaluation method of object and fire |
| CN109916747A (en) * | 2019-03-28 | 2019-06-21 | 山东科技大学 | A kind of building structural element fire and impact real-time coupling test method |
-
2019
- 2019-06-27 CN CN201910566956.0A patent/CN110211328A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507121A (en) * | 2011-11-23 | 2012-06-20 | 浙江大学 | Building structure seismic damage assessment system and method based on wireless sensor network |
| CN104376881A (en) * | 2014-11-20 | 2015-02-25 | 西安交通大学 | Nuclear power plant loose part positioning method based on Hilbert transform and data screening |
| JP2019079278A (en) * | 2017-10-25 | 2019-05-23 | 矢崎エナジーシステム株式会社 | Alarm and alarm system |
| CN108931262A (en) * | 2018-06-01 | 2018-12-04 | 北京华工信息技术有限公司 | It is a kind of for monitoring the optical fiber sensing system of structural safety |
| CN109858122A (en) * | 2019-01-21 | 2019-06-07 | 北京科技大学 | Consider that Earthquake Secondary leaves the road evaluation method of object and fire |
| CN109916747A (en) * | 2019-03-28 | 2019-06-21 | 山东科技大学 | A kind of building structural element fire and impact real-time coupling test method |
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Application publication date: 20190906 |
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