CN210893921U - Anchor bolt anchoring performance testing system based on wireless transmission - Google Patents
Anchor bolt anchoring performance testing system based on wireless transmission Download PDFInfo
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- CN210893921U CN210893921U CN201920894370.2U CN201920894370U CN210893921U CN 210893921 U CN210893921 U CN 210893921U CN 201920894370 U CN201920894370 U CN 201920894370U CN 210893921 U CN210893921 U CN 210893921U
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Abstract
The utility model discloses an crab-bolt anchoring capability test system based on wireless transmission, including force sensor, displacement sensor, data acquisition module, data processing module, SD card, external charging power supply. The data processing module and the data acquisition module are connected in a wireless manner to form an upper computer structure and a lower computer structure. In a field drawing test, load and displacement data acquired by the data acquisition module are wirelessly transmitted to the data processing module, instantaneous values, maximum values and load-displacement relation curves are displayed on the TFT color display screen in real time, and the data and the curves can be stored in the SD card. And comparing the sample load-displacement curve of the anchor bolt and the base material with the detected load-displacement curve by taking the SD card and storing the same specification and model, so that the anchoring performance of the anchor bolt can be determined. The data acquisition module and the data processing module are powered by batteries, and do not need an on-site AC220V power supply. The test system has high cost performance and is safe, convenient and accurate to test.
Description
Technical Field
The utility model belongs to the technical field of the building quality test technique and specifically relates to crab-bolt anchor capability test system based on wireless transmission.
Background
With the development of urban construction in China, the construction industry is in a rapid development stage, various building structure forms are more and more, anchor bolts are used as main connecting parts, the application range and the application amount of the anchor bolts are rapidly increased, and the anchor bolts are widely applied to construction and installation in multiple aspects such as building structures, external wall heat insulation, glass curtain walls, decoration and sulfur filling.
The anchor bolt is an important structural member of the building, the bearing performance of the anchor bolt directly influences the engineering quality, if the design requirement is not met, the damage of the installation part or the falling-off accident can be caused, and the anchor bolt is seriously dismantled and rebuilt, which relates to the durability and the personnel safety of the building. The anchor bolt quality, the anchor bolt installation quality and the basic wall quality all influence the bearing performance of the anchor bolt, wherein the anchor bolt installation construction quality is an important factor for determining the bearing performance of the anchor bolt. Due to the difference of quality and responsibility of constructors, various uncertain conditions can occur in site construction in actual engineering, and the quality of anchor bolt installation construction is different. In order to strictly control the construction quality, a construction unit and an inspection unit need to test the anchoring performance of the anchor bolt after installation, and the supervision and acceptance of the construction quality are enhanced.
At present, a pull test is adopted for testing the anchoring bearing performance of the anchor bolt and is divided into a non-breakage test and a breakage test, the breakage test is only appointed to be adopted in special occasions and conditions, and the most breakage tests or the non-breakage tests are adopted in a construction site. The sampling inspection mode is adopted in both non-damage test and damage test, the proportion of the non-damage test to general structural components, important structural components and life line engineering inspection is different, and random sampling is carried out according to 1-3% or even 20% of the total number of inspection batches and not less than 3-5. Sampling the damage inspection of the construction site, wherein each inspection batch is inspected according to 1 per mill of the total number and not less than 5 pieces. The non-damage test method is characterized in that the load is gradually added to the designed value of the anchoring bearing capacity by 1.15-1.3 times, the value is decreased by no more than 5% after waiting for 2 minutes, the anchoring part does not slide in the period, the substrate does not crack or is damaged, and the condition can be judged to be qualified. The method for testing the breakage property is to gradually increase the load until the anchor bolt or the anchoring fails and breaks, and generally requires that the value of the breakage load exceeds the designed value by 3 times, so that the anchor bolt or the anchoring can be judged to be qualified.
At present, the anchor bolt anchoring performance drawing test inspection mode adopts a multifunctional strength detector, drawing load is applied through hydraulic pressure, and the detected load is indicated through a mechanical pointer meter or a digital display meter, so that the data can not be stored and automatically recorded generally, manual recording is needed, and the data analysis and processing functions are not provided. The other is that a displacement meter is added on the basis of the drawing instrument, the applied load and the detected displacement are connected into a computer, the computer processes the collected load and displacement data to obtain a load-displacement relation curve for analysis, storage and application, and the main defects are that the cost is high due to non-special equipment, the price is high, the field test is mainly applied in a laboratory, and the field test is inconvenient to carry and move. Above detection mode because crab-bolt construction mounted position variety has also brought a lot of inconveniences for the test, also has certain safety problem simultaneously, especially to the breakage test.
SUMMERY OF THE UTILITY MODEL
To the problem that exists, the utility model aims at providing an crab-bolt anchoring capability test system based on wireless transmission can be safe, convenient, accurate, swift test crab-bolt installation quality to load, the displacement data analysis of gathering through drawing the experiment. The system can be used for realizing anchor bolt anchoring performance test in an experimental environment and an engineering construction site.
The technical scheme of the utility model is that: the anchor bolt anchoring performance testing system based on wireless transmission adopts an upper computer structure and a lower computer structure, and data are transmitted between the upper computer and the lower computer through wireless connection. The system consists of a force sensor, a displacement sensor, a data acquisition module (lower computer), a data processing module (upper computer), an SD card and an external charging power supply, and is shown in figure 1.
Furthermore, the force sensor, the displacement sensor and the data acquisition module are fixedly arranged on the loading device bracket, and the data processing module adopts a handheld mode; the test function is that the anchor bolt pulling load is increased at a constant speed through an electric or manual hydraulic device, meanwhile, load and displacement data collected by the data collection module are transmitted to the data processing module through wireless transmission, are displayed on a screen in the form of instantaneous values and load-displacement curves after being processed, and the anchoring performance of the anchor bolt can be determined through comparison with a sample curve.
Further, the drawing load detection adopts a force sensor to convert the load into the change of the resistance strain gauge; the sensor adopted by the corresponding displacement detection converts the displacement into the resistance change of the potentiometer; the output of the force and displacement sensor is connected to a data acquisition test module.
Further, the data acquisition module is composed of a block diagram as shown in fig. 2, and comprises a force sensor, a displacement sensor conversion unit 1, a conversion unit 2, a microprocessor unit, an antenna matching unit, a power supply unit, a battery pack and an electric quantity indicating unit; the conversion unit 1 and the conversion unit 2 convert the output signals of the force and displacement sensors into standard voltage signals, the standard voltage signals are converted into digital quantity through an AD converter in the microprocessor, and the digital quantity is wirelessly transmitted to the data processing module through the antenna matching unit; the data acquisition module adopts a low-power-consumption design and is powered by a battery pack; the power supply unit provides stable voltage for the microprocessor unit; the electric quantity indicating unit lights the indicating lamp when the power is insufficient through detecting the voltage of the battery pack.
Further, the block diagram of the data processing module is shown in fig. 3, and the data processing module includes a microprocessor unit, a TFT color display unit, a data storage unit, an antenna matching unit, a keyboard unit, an SD card interface unit, a power supply unit, and a battery pack; the microprocessor unit stores load and displacement data received wirelessly by the antenna matching unit into the data storage unit; the instantaneous values of the load and displacement data can be displayed on a TFT color display unit in real time, and the collected load-displacement relation curve can be displayed on the TFT color display unit; the load, the displacement data and the load-displacement curve can be stored in the SD card through the SD card interface unit; the load-displacement sample curve of the anchor bolts and the base material with the same model and specification stored in the calling SD card can be displayed on the TFT color display unit and is used as a comparison standard of the measurement curve; the keyboard unit can set working parameters and control working modes; the data processing module is powered by the battery pack, the detected electric quantity is displayed on the TFT color display unit, and the battery pack can be charged through an external charging power supply during power shortage.
Furthermore, the measured load and displacement data stored in the SD card can be uploaded to a computer for storage, processing and analysis, and a sample curve can be downloaded by the computer.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses adopt wireless data transmission between data acquisition module and the data processing module, eliminated the common mode and the differential mode interference of transmission line, improved the transmission quality of signal.
2. The data acquisition module is wirelessly connected with the data processing module, is not limited by a signal transmission line, and is suitable for various environments of a construction site, so that the test is more convenient.
3. The data acquisition module is wirelessly connected with the data processing module, so that a tester can keep a certain distance from the test point, and the test is safer.
4. The anchoring performance of the anchor bolt is determined by comparing the load-displacement curve of the test anchor bolt with the sample load-displacement curve of the anchor bolt and the base material with the same specification and model, so that the test is more accurate and quicker.
5. The system has the advantages of small volume, light weight, low cost, high reliability, strong function and the like, and is suitable for portable use in a construction site.
6. The data acquisition module and the data processing module are powered by the battery pack, do not need an alternating current 220V power supply, and are suitable for being used on a construction site.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a block diagram of the data acquisition module of the present invention;
FIG. 3 is a block diagram of the data processing module of the present invention;
FIG. 4 is a circuit diagram of the data acquisition module of the present invention;
fig. 5 is a circuit diagram of the data processing module of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
In this embodiment, the load detection adopts a strain spoke type force sensor, the measuring range can select 1T, 2T, 3T, 5T, 10T and the like according to the measurement requirement, and the technical parameters are as follows: the sensitivity is 2.0 +/-0.05 mV/V, the comprehensive precision is 0.3 percent FS, the output resistance is 700 +/-3 omega, and the nonlinearity is less than or equal to +/-0.1 percent FS; the displacement detection adopts a pull rod self-recovery potentiometer displacement sensor, and the measuring range can select 5mm, 10mm, 20mm and the like according to the measurement requirement, and the technical parameters are as follows: the nonlinearity is less than or equal to +/-0.1% FS, the repeatability error is less than or equal to 0.005mm, and the resistance values are 1K, 2K and 5K.
In the present embodiment, a circuit diagram of the data acquisition module is shown in fig. 4, in which the full bridge circuit output of the strain gauge of the force sensor is converted into a standard voltage signal by the circuit of the conversion unit 1, a single-power supply micro-power consumption precision instrumentation amplifier INA333 is used as an amplification conversion circuit, and a potentiometer is used for zeroing. The resistance signal output by the displacement sensor is converted into a standard voltage signal through a circuit of a conversion unit 2, and a following impedance conversion circuit consisting of a single power supply operational amplifier LM358 is adopted. As the core of acquisition and control, the microprocessor adopts a ZigBee special control chip CC2530 developed by TI company, the CC2530 is internally integrated with an 8051 kernel single chip microcomputer system and a 2.4GHz IEEE 802.15.4/ZigBee standard wireless radio frequency transceiving system, and the microprocessor is an 8-bit high-performance low-power-consumption microprocessor. 8 paths of input 12-bit ADCs with configurable resolution are integrated in the CC2530, and the conversion precision meets the system requirements on the collected load and displacement precision. The SRAM and the nonvolatile program memory which are integrated inside the system can store system setting parameters required by an application program besides saving program codes and constants. The CC2530 is connected to a wireless radio frequency antenna through an antenna matching unit circuit to realize wireless receiving and transmitting. Because the data acquisition module adopts the low-power consumption design, consequently use the group battery power supply, the group battery is connected to power supply unit through the switch, and the group battery adopts 4 batteries No. 5 to establish ties. The electric quantity indicating unit is realized by detecting the voltage of the battery pack by the CC2530 and lighting an indicating lamp when the power is insufficient. The internal power supply unit circuit adopts an LM1117-3.3V low-voltage difference linear conversion circuit to convert the battery voltage into +3.3V voltage for the digital circuit to use.
In this embodiment, a circuit diagram of a data processing module is shown in fig. 5, a microprocessor adopts a ZigBee special control chip CC2530 developed by TI company, an internal integrated USARTO is configured as an SPI bus, a USART1 is configured as a serial asynchronous communication interface, a TFT color display unit adopts a model TJC8048X550_011N (no touch) 5-inch display module and displays a resolution of 800 × 480 pixels, electrical performance parameters are 5V for typical operating voltage and 240 mA-170 mA for 5V operating current, USART serial interface, a maximum baud rate of 921600bps and an interface level of 3.3V/5V TTL, a TFT color display unit self-defines a Windows font library and supports basic GUI instructions (drawing points, drawing lines, drawing rectangles and the like), a color TFT display module is connected with an iron phosphate CC 30 through a serial asynchronous communication SD interface, a battery pack which adopts a 1M × 8-bit low-power consumption memory chip SST25VF010, is connected with the CC2530 through a card socket, a card socket is connected with an SD interface unit, a battery pack which adopts a battery pack, a battery pack which is connected with a battery pack, a battery pack which can be connected with a battery pack and is connected with an IFV + 3V power supply voltage conversion circuit, a battery pack which can be used for displaying bad voltage, and can be connected with an IFV + a battery pack, a battery pack which is connected with an IFV power supply voltage conversion circuit, a battery pack which is connected with a battery pack and is connected with an IFV power supply unit and a battery pack which is connected with a battery pack and a battery pack which is connected with an IFV power supply circuit under a high-voltage detection circuit, a high-voltage.
In this embodiment, the data acquisition module has a data acquisition function: the method comprises the steps of firstly installing and adjusting a loading device and a support, turning on a power switch of a data acquisition module, starting to acquire a group of load and displacement data at a fixed time of 0.5 second when the data acquisition module is powered on, and simultaneously sending the data to a data processing module in a wireless mode. The hydraulic force means is then applied at a certain preset load, typically 1/10 to 1/20 of the design load. And controlling the hydraulic force-applying device to increase the anchor bolt load to a required value at a constant speed in the testing stage.
In this embodiment, the data processing function of the data processing module is divided into four working interfaces: 1. adjusting an interface: the interface is positioned after the power switch is switched on and reset, and only the load and displacement data are wirelessly received by the interface and are displayed on the color display unit after being processed. At the moment, the hydraulic force application device is controlled to preset the load to a required value by monitoring load and displacement data. 2. Testing an interface: the interface is accessed through the function key, load and displacement data are received wirelessly and automatically calibrated to zero, and then the test stage is accessed. And controlling the hydraulic force-applying device to increase the anchor bolt load to a required value at a constant speed in a test stage, displaying the load, the displacement instantaneous value and the maximum value which are wirelessly received by the color display unit in real time, simultaneously drawing a load-displacement change curve, and simultaneously storing the collected load and displacement data to the data storage unit in the process. 3. Analysis and judgment interface: the interface is accessed through the function key, and the sample load-displacement curve of the anchor bolt with the same specification and model and base material can be called from the SD card at the interface and is compared with the current test curve to determine the anchoring performance of the anchor bolt. 4. A parameter setting interface: the function key is used for entering the interface, so that the measuring range parameters of the sensor can be modified, corresponding parameters can be stored, and load and displacement data stored in the data storage unit can be imported into the SD card through the function key.
In this embodiment, the data of the measured load and the displacement stored in the SD card may be uploaded to a computer for storage, processing and analysis, or the computer may download a sample curve.
Technical scheme, or technical personnel in the field are in the utility model technical scheme's inspiration the utility model discloses an essence and protection within range, design similar technical scheme and reach above-mentioned technological effect, perhaps to the impartial change that application scope was made and improve etc. all should still belong to within the protection scope is covered to the patent of the utility model.
Claims (8)
1. The anchor bolt anchoring performance testing system based on wireless transmission is characterized by comprising a force sensor, a displacement sensor, a data acquisition module, a data processing module, an SD card and an external charging power supply; the data processing module and the data acquisition module are connected in a wireless manner to form an upper computer structure and a lower computer structure; the force sensor and the displacement sensor are connected with the data acquisition module; load and displacement data acquired by the data acquisition module are transmitted to the data processing module in a wireless manner; the data processing module is connected with the SD card to store and call data; the data of the measurement load and the displacement stored in the SD card can be uploaded to a computer; the external charging power supply can charge the battery pack arranged in the data processing module.
2. The system for testing the anchoring performance of the anchor bolt based on the wireless transmission is characterized in that the data acquisition module consists of a transformation unit 1, a transformation unit 2, a microprocessor unit, an antenna matching unit, a power supply unit, a battery pack and an electric quantity indicating unit; the output end of the force sensor is connected with the conversion circuit 1; the output end of the displacement sensor is connected with the conversion circuit 2; the conversion circuit 1 and the conversion circuit 2 are respectively connected with the microprocessor unit; the antenna matching unit is connected with the microprocessor unit and the radio frequency antenna; the power supply unit is connected with the battery pack through a switch; and the electric quantity indicating unit is connected with the microprocessor unit and the power switch.
3. The system for testing anchor bolt anchoring performance based on wireless transmission is characterized in that the data processing module is composed of a microprocessor unit, a TFT color display unit, a data storage unit, an SD card interface unit, an antenna matching unit, a keyboard unit, a power supply unit and a battery pack; the TFT color display unit is connected with the microprocessor unit; the data storage unit and the SD card interface unit are connected with the microprocessor unit; the antenna matching unit is connected with the microprocessor unit and the radio frequency antenna; the output end of the keyboard unit is connected with the input end of the microprocessor unit; the power supply unit is connected with the battery pack through a switch.
4. The system for testing anchoring performance of anchor bolt based on wireless transmission as claimed in claim 2, wherein said transformation unit 1 employs an amplification circuit composed of amplifier INA333 for single power supply integrator.
5. The system for testing anchor bolt anchoring performance based on wireless transmission is characterized in that the transformation unit 2 adopts a following impedance transformation circuit composed of a single power supply operational amplifier LM 358.
6. The system for testing anchor bolt anchoring performance based on wireless transmission as claimed in claim 3, wherein the data storage unit circuit adopts a low power consumption SRAM memory chip SST25VF010 for data temporary storage.
7. The system for testing anchoring performance of anchor bolt based on wireless transmission as claimed in claim 1, wherein the microprocessor adopted by the data acquisition module and the data processing module is CC2530 for controlling data acquisition, data processing, data display and wireless transmission of data.
8. The system for testing anchoring performance of anchor bolt based on wireless transmission as claimed in claim 1, wherein the data acquisition module and the data processing module are powered by battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920894370.2U CN210893921U (en) | 2019-06-14 | 2019-06-14 | Anchor bolt anchoring performance testing system based on wireless transmission |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920894370.2U CN210893921U (en) | 2019-06-14 | 2019-06-14 | Anchor bolt anchoring performance testing system based on wireless transmission |
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| CN210893921U true CN210893921U (en) | 2020-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920894370.2U Expired - Fee Related CN210893921U (en) | 2019-06-14 | 2019-06-14 | Anchor bolt anchoring performance testing system based on wireless transmission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624480A (en) * | 2021-08-27 | 2021-11-09 | 四川交达预应力工程检测科技有限公司 | Synchronous group anchor test system |
-
2019
- 2019-06-14 CN CN201920894370.2U patent/CN210893921U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624480A (en) * | 2021-08-27 | 2021-11-09 | 四川交达预应力工程检测科技有限公司 | Synchronous group anchor test system |
| CN113624480B (en) * | 2021-08-27 | 2024-01-02 | 四川交达预应力工程检测科技有限公司 | Synchronous group anchor test system |
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Granted publication date: 20200630 Termination date: 20210614 |