CN103912114B - A kind of intelligent scaffold clasp of surveying STRESS VARIATION - Google Patents
A kind of intelligent scaffold clasp of surveying STRESS VARIATION Download PDFInfo
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- CN103912114B CN103912114B CN201410124502.5A CN201410124502A CN103912114B CN 103912114 B CN103912114 B CN 103912114B CN 201410124502 A CN201410124502 A CN 201410124502A CN 103912114 B CN103912114 B CN 103912114B
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- scaffold clasp
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Abstract
The present invention relates to Construction Formwork & Scaffold Technology field, particularly a kind of intelligent scaffold clasp of surveying STRESS VARIATION, comprises scaffold clasp, also comprises the intelligent strain monitoring device sticking on scaffold clasp. Compared with prior art, simplicity of design of the present invention is optimized, and is convenient for carrying, STRESS VARIATION that can real-time perception fastener, realize the Real-Time Monitoring of contacting piece STRESS VARIATION, the defect of effectively having avoided the extensive wiring of traditional strain monitoring device to bring, realized the monitoring without wiring, and monitoring periods is short, efficiency is high, self anti-electromagnetic interference capability is strong, good stability, can directly apply in Practical Project, is applicable to the stress monitoring of suitability for industrialized production and various engineering structure scaffold clasps.
Description
Technical field
The present invention relates to Construction Formwork & Scaffold Technology field, particularly a kind of intelligent scaffold clasp of surveying STRESS VARIATION.
Background technology
Scaffold pattern has multiple, as door-type scaffold, bowl fastening type scaffold, bolt type scaffold, disc type scaffold, sideTower scaffold, design of coupler scaffold etc., in addition, related application also have polytype climbing frame, widely used is fastenerFormula scaffold. Along with the appearance of a large amount of modernization heavy construction systems, fastener type steel pipe scaffold can not adapt to construction and send outThe needs of exhibition need to be monitored scaffold clasp especially in special engineering occasion.
At present, conventional scaffold clasp strain monitoring is mainly the strain monitoring based on wired cable transmission. Pass at wired cableIn defeated strain monitoring, transmission all adopts wire cable mode to complete. Although this technological means has the high and technology of data transmission efficiencyRipe advantage, but in large-scale scaffolding structure test, along with the continuous increase of construction area, number of sensors and wired electricityCable consumption increases severely thereupon, causes site layout project and withdraws that wire cable workload is large, test period is long, efficiency is low, even mayCause the wire cable installation work amount of several kms to be difficult to carry out. Numerous wire cable complex distribution is in disorder, easily wrong line position,Bring loss that is difficult to remedy etc. for the data processing in later stage. Moreover, in traditional wired cable transmission mode, adopt analog signal to passDefeated, easily make to produce and crosstalk between cable. In addition, analog signal is subject to temperature, electromagnetic interference also particularly evident, thereby causes numberAccording to can not correct response bridge strain monitoring information.
Therefore, need badly and design the scaffold clasp that can carry out according to actual requirement of engineering real-time high-efficiency monitoring.
Summary of the invention
The object of the invention is, the problem existing for prior art, provides a kind of intelligent scaffold clasp of surveying STRESS VARIATION,The STRESS VARIATION of real-time perception fastener, realizes Real-Time Monitoring.
The technical scheme that the present invention deals with problems is: a kind of intelligent scaffold clasp of surveying STRESS VARIATION, comprise scaffold clasp,Also comprise the intelligent strain monitoring device sticking on scaffold clasp.
Further, described intelligent strain monitoring device comprise full-bridge strain transducer, signal condition amplifier, data processor,Wireless transmitting system, wherein, described full-bridge strain transducer is connected with signal condition amplifier, and described data processor is respectivelyBe connected with signal condition amplifier, wireless transmitting system.
Further, described intelligent strain monitoring device comprises following assembly: full-bridge strain transducer, AD converter, Wei ChuReason device, power supply, wireless transmitting system, alarm, wherein, described full-bridge strain transducer is connected with AD converter, instituteState microprocessor and be connected respectively with AD converter, wireless transmitting system and alarm respectively, described power supply turns with AD respectivelyParallel operation, microprocessor, wireless transmitting system are connected.
Preferably, described data processor and wireless transmitting system combination realize processing and the wireless transmission of data.
Preferably, described full-bridge strain transducer is resistance strain type sensor.
Preferably, the electric bridge of described resistance strain type sensor is strain chip electric bridge, and in described strain chip electric bridge, including shouldBecome sheet.
Preferably, described wireless transmitting system adopts Zigbee agreement to carry out transfer of data.
Further, described scaffold clasp is the scaffold clasp with wireless sensing network interface.
Preferably, described scaffold clasp is rotary buckle for steel pipe scaffold.
Compared with prior art, the invention has the beneficial effects as follows: simplicity of design optimization, be convenient for carrying, can real-time perception fastenerSTRESS VARIATION, realized the Real-Time Monitoring of contacting piece STRESS VARIATION, effectively avoided traditional strain monitoring device to connect up on a large scaleThe defect of bringing, has realized the monitoring without wiring, and monitoring periods is short, and efficiency is high, self anti-electromagnetic interference capability is strong,Good stability, can directly apply in Practical Project, is applicable to the stress of suitability for industrialized production and various engineering structure scaffold claspsMonitoring.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of intelligent scaffold clasp of surveying STRESS VARIATION of the present invention;
Fig. 2 is the cross-sectional view of Fig. 1;
Fig. 3 is the intelligent strain monitoring device of a kind of intelligent scaffold clasp of surveying STRESS VARIATION of the present invention in embodiment 1Theory structure block diagram;
Fig. 4 is the intelligent strain monitoring device of a kind of intelligent scaffold clasp of surveying STRESS VARIATION of the present invention in embodiment 2Theory structure block diagram;
Fig. 5 is the relevant setting of the microprocessor of a kind of intelligent scaffold clasp of surveying STRESS VARIATION of the present invention in embodiment 2Theory structure block diagram.
Detailed description of the invention
Embodiment 1
As depicted in figs. 1 and 2, a kind of intelligent scaffold clasp of surveying STRESS VARIATION of the present invention, comprises scaffold clasp,Also comprise the intelligent strain monitoring device sticking on scaffold clasp.
In the above-described embodiments, as shown in Figure 3, described intelligent strain monitoring device comprises full-bridge strain transducer, signal conditionAmplifier, data processor, wireless transmitting system, wherein, described full-bridge strain transducer is connected with signal condition amplifier,Described data processor is connected with signal condition amplifier, wireless transmitting system respectively.
In the above-described embodiments, in order to meet the high data volume transmission of the last several jumpings of whole wireless transmitting system network, described wirelessTransmission system preferably adopts Zigbee agreement to carry out transfer of data, and the data volume when meeting full-bridge strain transducer synchronous acquisition is largeRespective transmissions requirement, thereby avoid connecting up on a large scale as traditional strain monitoring device, can be beneficial to realize monitoredJourney is without wiring, and then shortening monitoring periods, raises the efficiency.
In the above-described embodiments, described scaffold clasp is the scaffold clasp with wireless sensing network interface, is preferably steel pipeScaffold rotary buckle.
In addition, can need to develop the scaffold clasp that is integrated with described intelligent strain monitoring device according to concrete engineering, for thisThe using method of a kind of intelligent scaffold clasp of surveying STRESS VARIATION of invention: after support is installed, first measure and be respectively provided withThe initial stress values of the scaffold clasp of intelligence strain monitoring device; Pre-according to each fastener installation site and result of calculation setting stressAlert value, exceedes early warning value system automatic alarm, and data are sent to monitoring center by wireless transmitting system analyze its stress and becomeChange situation value; If support has the precompressed of carrying out experiment, can store without load and have the changing value between load, as observation processIn extreme value, also can construction process in occur exceeding under extreme cases, should report to the police at once.
When concrete application a kind of intelligent scaffold clasp of surveying STRESS VARIATION of the present invention, described intelligent strain monitoring device is used forThe STRESS VARIATION of scaffold clasp is carried out to intelligent real time monitoring, in described intelligent strain monitoring device, described data processorCarry out to the received signal pretreatment. In application, preferably, described data processor and wireless transmitting system combination realize numberAccording to processing and wireless transmission. The combination of described data processor and wireless transmitting system and existing wireless receiver structure are oneSample, its difference is: data processor of the present invention is to be connected with signal condition amplifier to realize the AD conversion of data,Then by the radio frequency chip of wireless transmitting system, data are transmitted wirelessly; And existing wireless receiver is whole wireless transmissionThe sink nodes that grid is total are to come from for being connected with PC to realize receiving the data that wireless transmitting system sends. LogicalCross the STRESS VARIATION of described full-bridge strain transducer real-time perception fastener, for saving power consumption, full-bridge strain transducer only should in generationPower changes or the STRESS VARIATION that exceedes threshold value just sends to data processor, in the time exceeding the data of changes of threshold, system oneselfMoving warning. Moreover full-bridge strain transducer adopts radio transmission of digital signals, be beneficial to enhancing anti-electromagnetic interference capability strong, improveStability. Generally, by application of the present invention, STRESS VARIATION that can real-time perception fastener, has realized contacting piece stress and has becomeThe Real-Time Monitoring of changing, the defect of effectively avoiding the extensive wiring of traditional strain monitoring device to bring, realizes the monitoring without wiring,And monitoring periods is short, efficiency is high, and self anti-electromagnetic interference capability is strong, good stability, be suitable for directly applying in Practical Project,Be applicable to the stress monitoring of suitability for industrialized production and various engineering structure scaffold clasps.
Embodiment 2
As depicted in figs. 1 and 2, a kind of intelligent scaffold clasp of surveying STRESS VARIATION of the present invention, comprises scaffold clasp,Also comprise the intelligent strain monitoring device sticking on scaffold clasp.
In the above-described embodiments, as shown in Figure 4, described intelligent strain monitoring device comprises following assembly: full-bridge strain transducer,AD converter, microprocessor, power supply, wireless transmitting system, alarm, wherein, described full-bridge strain transducer and AD turnParallel operation is connected, and described microprocessor is connected respectively with AD converter, wireless transmitting system and alarm respectively, described electricitySource is connected with AD converter, microprocessor, wireless transmitting system respectively. Particularly, described AD converter is preferablyAD7730, described microprocessor is preferably Atmega8, i.e. singlechip chip Atmega8.
In the above-described embodiments, as shown in Figure 5, described microprocessor can be connected with serial ports FT232 module simultaneously, transformsBecome usb mode to connect, thereby be conveniently connected with portable computer PC.
In the above-described embodiments, in order to meet the high data volume transmission of the last several jumpings of whole wireless transmitting system network, described wirelessTransmission system preferably adopts Zigbee agreement to carry out transfer of data, and the data volume when meeting full-bridge strain transducer synchronous acquisition is largeRespective transmissions requirement, thereby avoid connecting up on a large scale as traditional strain monitoring device, can be beneficial to realize monitoredJourney is without wiring, and then shortening monitoring periods, raises the efficiency.
In the above-described embodiments, described scaffold clasp is the scaffold clasp with wireless sensing network interface, is preferably steel pipeScaffold rotary buckle.
In addition, can need to develop the scaffold clasp that is integrated with described intelligent strain monitoring device according to concrete engineering, for thisThe using method of a kind of intelligent scaffold clasp of surveying STRESS VARIATION of invention: after support is installed, first measure and be respectively provided withThe initial stress values of the scaffold clasp of intelligence strain monitoring device; Pre-according to each fastener installation site and result of calculation setting stressAlert value, exceedes early warning value alarm automatic alarm, and data are sent to monitoring center by wireless transmitting system analyze its stressSituation of change value; If support has the precompressed of carrying out experiment, can store without load and have the changing value between load, as monitoringExtreme value in journey also can occur exceeding under extreme cases in the process of construction, should report to the police at once.
When concrete application a kind of intelligent scaffold clasp of surveying STRESS VARIATION of the present invention, described intelligent strain monitoring device is used forThe STRESS VARIATION of scaffold clasp is carried out to intelligent real time monitoring, in described intelligent strain monitoring device, described microprocessor(Atmega8) carry out to the received signal pretreatment. In application, preferably, described microprocessor and wireless transmitting systemCombination realizes processing and the wireless transmission of data. The combination of described microprocessor and wireless transmitting system and existing wireless receiverStructure is the same, and its difference is: microprocessor of the present invention is that the AD that realizes data that is connected with AD converter turnsChange, then by the radio frequency chip of wireless transmitting system, data are transmitted wirelessly; And existing wireless receiver is whole wirelessThe sink nodes that transmission system network is total are to come from for being connected with PC to realize receiving the data that wireless transmitting system sends.By the STRESS VARIATION of described full-bridge strain transducer real-time perception fastener, for saving power consumption, full-bridge strain transducer is only occurringSTRESS VARIATION or the STRESS VARIATION that exceedes threshold value just send to data processor, in the time exceeding the data of changes of threshold, described inAlarm meeting automatic alarm; And, in observation process, carry out data acquisition, signal condition, data processing and data withoutLine transmission all adopts low-power chip, and single-chip microcomputer has unique sleep pattern in addition, thereby has effectively ensured sensor and netThe low-power consumption of network and the feature of high life. Moreover full-bridge strain transducer adopts radio transmission of digital signals, be beneficial to and strengthen anti-electricityMagnetic disturbance ability is strong, improves stability. Generally, by application of the present invention, STRESS VARIATION that can real-time perception fastener,Realize the Real-Time Monitoring of contacting piece STRESS VARIATION, the defect of effectively avoiding the extensive wiring of traditional strain monitoring device to bring,Realize the monitoring without wiring, and monitoring periods is short, and efficiency is high, and self anti-electromagnetic interference capability is strong, good stability, Neng GouzhiScoop out for Practical Project, be applicable to the stress monitoring of suitability for industrialized production and various engineering structure scaffold clasps.
Embodiment 3
As depicted in figs. 1 and 2, a kind of intelligent scaffold fastener structures of surveying STRESS VARIATION of the present invention arranges and applies with realExecute example 1, wherein, as shown in Figure 3, the basic structure of described intelligent strain monitoring device arranges same embodiment 1; Particularly, instituteStating full-bridge strain transducer is resistance strain type sensor.
In the above-described embodiments, described signal condition amplifier is preferably direct current signal amplifier.
In the above-described embodiments, the electric bridge of described resistance strain type sensor is strain chip electric bridge, in described strain chip electric bridgeInclude foil gauge. Preferably, the output of described strain-type electric bridge is connected with signal condition amplifier, comprises 4 in electric bridgeFoil gauge Rl, R2, R3 and the R4 of individual 1K, when work, make two foil gauge pressurizeds, and two tensions, answer negate contrary;Draw the differential input signal of two holding wires as signal condition amplifier, when foil gauge is during because of stressed generation deformation, electric bridge losesGo balance, thereby produce differential signal, this differential signal is connected with signal condition amplifier, and preferably mode is that 24 of accesses are highPrecision A/D 7730 signal condition chips.
Embodiment 4
As depicted in figs. 1 and 2, a kind of intelligent scaffold fastener structures of surveying STRESS VARIATION of the present invention arranges and applies with realExecute example 2, wherein, as shown in Figure 4, the basic structure of described intelligent strain monitoring device arranges same embodiment 2; Particularly, instituteStating full-bridge strain transducer is resistance strain type sensor.
In the above-described embodiments, between described AD converter and full-bridge strain transducer, be also provided with signal condition amplifier,Described signal condition amplifier is preferably direct current signal amplifier.
In the above-described embodiments, the electric bridge of described resistance strain type sensor is strain chip electric bridge, in described strain chip electric bridgeInclude foil gauge. Preferably, the output of described strain-type electric bridge is connected with signal condition amplifier, comprises 4 in electric bridgeFoil gauge Rl, R2, R3 and the R4 of individual 1K, when work, make two foil gauge pressurizeds, and two tensions, answer negate contrary;Draw the differential input signal of two holding wires as signal condition amplifier, when foil gauge is during because of stressed generation deformation, electric bridge losesGo balance, thereby produce differential signal, this differential signal is connected with signal condition amplifier, accesses 24 high accurate A/D 7730Signal condition chip.
The invention is not restricted to above-mentioned embodiment, it is any apparent to above-mentioned embodiment that those skilled in the art makeImprove or change, can not exceed the protection domain of design of the present invention and claims.
Claims (7)
1. the intelligent scaffold clasp that can survey STRESS VARIATION, comprises scaffold clasp, it is characterized in that, also comprises the intelligent strain monitoring device sticking on scaffold clasp; Described intelligent strain monitoring device comprises full-bridge strain transducer, signal condition amplifier, data processor, wireless transmitting system, wherein, described full-bridge strain transducer is connected with signal condition amplifier, and described data processor is connected with signal condition amplifier, wireless transmitting system respectively; Described intelligent strain monitoring device comprises following assembly: full-bridge strain transducer, AD converter, microprocessor, power supply, wireless transmitting system, alarm, wherein, described full-bridge strain transducer is connected with AD converter, described microprocessor is connected respectively with AD converter, wireless transmitting system and alarm respectively, and described power supply is connected with AD converter, microprocessor, wireless transmitting system respectively.
2. the intelligent scaffold clasp of surveying STRESS VARIATION according to claim 1, is characterized in that, described data processor and wireless transmitting system combination realize processing and the wireless transmission of data.
3. according to the intelligent scaffold clasp of the STRESS VARIATION surveyed described in any one in claim 1 to 2, it is characterized in that, described full-bridge strain transducer is resistance strain type sensor.
4. the intelligent scaffold clasp of surveying STRESS VARIATION according to claim 3, is characterized in that, the electric bridge of described resistance strain type sensor is strain chip electric bridge, in described strain chip electric bridge, includes foil gauge.
5. the intelligent scaffold clasp of surveying STRESS VARIATION according to claim 4, is characterized in that, described wireless transmitting system adopts Zigbee agreement to carry out transfer of data.
6. the intelligent scaffold clasp of surveying STRESS VARIATION according to claim 1, is characterized in that: described scaffold clasp is the scaffold clasp with wireless sensing network interface.
7. the intelligent scaffold clasp of surveying STRESS VARIATION according to claim 6, is characterized in that: described scaffold clasp is rotary buckle for steel pipe scaffold.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410124502.5A CN103912114B (en) | 2014-03-28 | 2014-03-28 | A kind of intelligent scaffold clasp of surveying STRESS VARIATION |
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| CN201410124502.5A CN103912114B (en) | 2014-03-28 | 2014-03-28 | A kind of intelligent scaffold clasp of surveying STRESS VARIATION |
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| CN103912114A CN103912114A (en) | 2014-07-09 |
| CN103912114B true CN103912114B (en) | 2016-05-18 |
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| CN201410124502.5A Expired - Fee Related CN103912114B (en) | 2014-03-28 | 2014-03-28 | A kind of intelligent scaffold clasp of surveying STRESS VARIATION |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106703405A (en) * | 2017-01-09 | 2017-05-24 | 杨秀峰 | Socket-keyslot intelligent monitoring support frame |
| CN107355070B (en) * | 2017-08-25 | 2019-08-27 | 国家电网公司 | Scaffold clasp |
| CN108019035A (en) * | 2017-12-28 | 2018-05-11 | 晋江万芯晨电子科技有限公司 | The jacket-type scaffold base of steel pipe stress can be monitored |
| CN107882318A (en) * | 2017-12-28 | 2018-04-06 | 晋江万芯晨电子科技有限公司 | The jacket-type scaffold base of chassis stress can be monitored |
| CN107916774A (en) * | 2018-01-11 | 2018-04-17 | 晋江万芯晨电子科技有限公司 | Intelligent interpolation type, the adjustable scaffold base of stress can be surveyed |
| CN107941388A (en) * | 2018-01-11 | 2018-04-20 | 晋江万芯晨电子科技有限公司 | Distributed intelligence scaffold base stress monitors system |
| CN107916773A (en) * | 2018-01-11 | 2018-04-17 | 晋江万芯晨电子科技有限公司 | A kind of adjustable scaffold base for surveying screw rod stress |
| CN107989357A (en) * | 2018-01-22 | 2018-05-04 | 晋江万芯晨电子科技有限公司 | The intelligent scaffolding steel pipe of stress can be surveyed |
| CN109141709A (en) * | 2018-07-03 | 2019-01-04 | 合肥工业大学 | A kind of distribution scaffold stress monitoring system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3076138U (en) * | 2000-07-21 | 2001-03-30 | 株式会社三長精密 | Pipe clamp cover |
| CN101603864A (en) * | 2009-06-01 | 2009-12-16 | 中国建筑第八工程局有限公司 | A kind of method for monitoring axial force of scaffold upright rod |
| CN201738564U (en) * | 2010-07-13 | 2011-02-09 | 河海大学 | Axial over-loading alarming system for scaffold |
| CN202886031U (en) * | 2012-04-13 | 2013-04-17 | 云南建工水利水电建设有限公司 | Scaffold stress change monitoring device |
| CN203905454U (en) * | 2014-03-28 | 2014-10-29 | 交通运输部公路科学研究所 | Intelligent scaffold fastener capable of measuring stress change |
-
2014
- 2014-03-28 CN CN201410124502.5A patent/CN103912114B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3076138U (en) * | 2000-07-21 | 2001-03-30 | 株式会社三長精密 | Pipe clamp cover |
| CN101603864A (en) * | 2009-06-01 | 2009-12-16 | 中国建筑第八工程局有限公司 | A kind of method for monitoring axial force of scaffold upright rod |
| CN201738564U (en) * | 2010-07-13 | 2011-02-09 | 河海大学 | Axial over-loading alarming system for scaffold |
| CN202886031U (en) * | 2012-04-13 | 2013-04-17 | 云南建工水利水电建设有限公司 | Scaffold stress change monitoring device |
| CN203905454U (en) * | 2014-03-28 | 2014-10-29 | 交通运输部公路科学研究所 | Intelligent scaffold fastener capable of measuring stress change |
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