CN214583936U - Small multifunctional glass curtain wall plate vibration mode measuring device - Google Patents
Small multifunctional glass curtain wall plate vibration mode measuring device Download PDFInfo
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- CN214583936U CN214583936U CN202121156728.5U CN202121156728U CN214583936U CN 214583936 U CN214583936 U CN 214583936U CN 202121156728 U CN202121156728 U CN 202121156728U CN 214583936 U CN214583936 U CN 214583936U
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Abstract
The utility model discloses a small-size multi-functional glass curtain wall plate vibration mode measuring device, including data analysis module and the data storage module who is connected with data analysis module electricity, power module, wireless data transmission module, demonstration and operating module, analog voltage collection module, excitation voltage output module, miniature piezoelectric type vibration exciter is connected to excitation voltage output module output, miniature piezoelectric type vibration exciter is installed on the glass panels who is detected, installs acceleration sensor on the glass panels who is detected, analog voltage collection module is connected to the acceleration sensor output. The device is matched with a vibration exciter and an acceleration sensor for use, has the functions of vibration excitation and vibration signal acquisition of a glass plate, and has the functions of data display, touch screen operation, data storage, data wireless transmission and battery power supply. The device can be conveniently used for field detection, and can provide glass plate vibration data for judging the falling risk of the glass plate.
Description
The technical field is as follows:
the utility model relates to a vibration measurement technical field especially relates to a small-size multi-functional glass curtain wall plate vibration mode measuring device.
Background art:
the glass curtain wall is an outer enclosure structure of a building structure, and has the effects of wind resistance, water resistance and the like and attractive decoration. The glass curtain wall is used at the end of 90 years in 20 th century in China, and along with economic development, the glass curtain wall is more and more widely used in recent years. Like all materials and structure, glass curtain wall is in long-term use, and the structure that its used is glued, the phenomenon such as bolt, fossil fragments all have performance degradation, not hard up and corruption of different degrees, has influenced adhesive force and the fastening force of acting on curtain wall glass, causes curtain wall glass not hard up, and curtain wall glass probably drops under the extreme condition. The looseness and the falling of the curtain wall glass not only influence the use functions of the curtain wall glass, such as wind resistance, water resistance and the like, but also cause personal casualties and property loss due to falling from high altitude. In recent years, many curtain wall glass falling accidents occur in China, and serious consequences are caused.
For the method for preventing the accidents in the bud, on one hand, a design method, a construction and installation technology and the like are improved, and on the other hand, the conventional glass curtain wall needs to be regularly detected in a large scale, particularly the glass curtain wall which exceeds the design service life and is influenced by sunlight irradiation, moist rain and strong wind for a long time in the use process. The method is suitable for glass curtain walls at present, and is simple, efficient and reliable. The method based on vibration is a method for detecting the loosening and falling risks of the glass curtain wall, which is proposed by scholars in recent years. The main principle of the method is that the peripheral boundary conditions of the curtain wall glass are changed due to the looseness of the curtain wall glass, and the change of the boundary conditions can influence the natural vibration frequency of the curtain wall glass. Therefore, whether the boundary condition changes can be judged by measuring the change of the vibration frequency of a certain order of the structure by a vibration method, so that the looseness degree and the falling risk of the curtain wall glass are analyzed. However, in the field of curtain wall detection, a special device for detecting the on-site vibration of a curtain wall glass plate is lacked.
Compared with curtain wall glass vibration test in a laboratory, the field test of the glass curtain wall has some specificities, such as: 1) the outer wall area of a large building is usually very large, so that the quantity and workload of one-time detection of glass plates are very large, and the requirement on detection efficiency is high; 2) most of the detection needs high-altitude operation, and the requirements on the portability and the single-person portability of detection equipment are high; 3) large-scale detection cannot be carried out by using a wired transmission mode for data acquisition and transmission; 4) when part of the glass plate detection data has problems, repeated detection consumes manpower and material resources, so that the correctness of the detection data needs to be judged in real time; 5) the vibration amplitude of the glass plate under the environmental excitation is small, and repeatable external excitation is needed, and the like. The particularity of the above-mentioned problems imposes particular requirements on the glass curtain wall detection device. Therefore, a device suitable for the field detection of the glass curtain wall is urgently needed to be provided, the falling risk is rapidly detected and judged for the glass curtain wall, the normal use of the glass curtain wall structure is ensured, and the life and property safety of people is guaranteed.
The utility model has the following contents:
an object of the utility model is to provide a small-size multi-functional glass curtain wall plate vibration mode measuring device to solve prior art not enough.
The utility model discloses by following technical scheme implement: the utility model provides a small-size multi-functional glass curtain wall plate vibration mode measuring device, includes casing and the circuit board of setting in the casing, the circuit board includes data analysis module and the data storage module, power module, wireless data transmission module, demonstration and operating module, analog voltage collection module, excitation voltage output module that are connected with data analysis module electricity, miniature piezoelectric vibration exciter is connected to excitation voltage output module output, miniature piezoelectric vibration exciter is installed on the glass panels who is detected, install acceleration sensor on the glass panels who is detected, analog voltage collection module is connected to the acceleration sensor output.
Preferably, the shell is provided with a first data acquisition port, a second data acquisition port, an analog output interface, a touch display screen, a function button, a power switch, a confirmation button, a cancellation button, an internal power charging interface, a USB interface, a Micro-USB interface and a TF card slot.
Preferably, the data analysis module is a single chip processor.
Preferably, the wireless data transmission module is a 4G or 5G module.
Preferably, the display and operation module is a touch screen.
Preferably, the analog voltage acquisition module is an AD7321 chip.
Preferably, the excitation voltage output module adopts a digital-to-analog conversion chip AD5722, and is matched with an ADI high-speed amplification chip ADA4870 chip.
Preferably, the acceleration sensor is an IEPE-type acceleration sensor.
The utility model has the advantages that:
the curtain wall glass plate detection device has the functions of glass plate vibration excitation and vibration signal acquisition after being connected with the miniature vibration exciter and the acceleration sensor, and has the functions of data display, touch screen operation, data storage, data wireless transmission and battery power supply. The measurement data can be sent to a remote server through the Internet, so that the data can be deeply analyzed. Therefore, the device is matched with the vibration exciter and the acceleration sensor for use, can be conveniently used for field detection, and can provide glass plate vibration data for judging the falling risk of the glass plate. The invention has the characteristics of complete functions, simple structure, easy carrying, convenient operation, good stability and the like.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic external structural view of a small multifunctional glass curtain wall plate vibration mode measuring device according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of an internal circuit of a small multifunctional glass curtain wall plate vibration mode measuring device according to an embodiment of the present invention;
fig. 3 is the utility model discloses a small-size multi-functional glass curtain wall plate vibration mode measuring device's wireless data transmission module circuit diagram.
Fig. 4 is the utility model discloses a small-size multi-functional glass curtain wall plate vibration mode measuring device's analog voltage acquisition module circuit diagram.
Fig. 5 is a circuit diagram of a data storage module of a small multifunctional glass curtain wall plate vibration mode measuring device according to an embodiment of the present invention.
Fig. 6 is a digital-to-analog conversion chip circuit diagram of the small multifunctional glass curtain wall plate vibration mode measuring device of the embodiment of the utility model.
Fig. 7 is a circuit diagram of a high-speed amplification chip of a small multifunctional glass curtain wall plate vibration mode measuring device according to an embodiment of the present invention.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 2, the small multifunctional glass curtain wall plate vibration mode measuring device comprises a shell and a circuit board arranged in the shell, wherein the circuit board comprises a data analysis module 101, a data storage module 102 electrically connected with the data analysis module 101, a power supply module 103, a wireless data transmission module 104, a display and operation module 105, an analog voltage acquisition module 106 and an excitation voltage output module 107, the output end of the excitation voltage output module 107 is connected with a miniature piezoelectric vibration exciter 108, the miniature piezoelectric vibration exciter 108 is arranged on a detected glass panel 110, an acceleration sensor 109 is arranged on the detected glass panel 110, and the output end of the acceleration sensor 109 is connected with the analog voltage acquisition module 106.
As shown in fig. 1, the shell is provided with a first data acquisition interface 1, a second data acquisition interface 2, an analog output interface 3, a touch display screen 4, a function button 5, a power switch 6, a determination button 7, a cancel button 8, an internal power charging interface 9, a USB interface 10, a Micro-USB interface 11 and a TF card slot 12.
Wherein, the data analysis module 101 is a single chip processor. In the embodiment, the MCU core board is adopted, and the development board takes STM32F407ZGT6 as a core chip, so that the volume is small, the integration level is high, the interface is flexible, and secondary development is convenient to carry out. The control of the whole system is realized, including the output and the collection of analog voltage, and the analysis and the processing of data.
The wireless data transmission module 104 is a 4G or 5G module, and an EC20 chip is adopted in this embodiment, as shown in fig. 3; the display and operation module 105 is a touch screen; the analog voltage acquisition module 106 is an AD7321 chip, as shown in fig. 4; the excitation voltage output module 107 adopts a digital-to-analog conversion chip AD5722, and is matched with an ADI high-speed amplification chip ADA4870 chip, as shown in FIGS. 6 and 7; the acceleration sensor 109 is an IEPE type acceleration sensor.
Before the device is used, an excitation waveform, namely an analog voltage signal is stored in a TF card placed in a TF card slot 12 in FIG. 1 in the form of a data file, and a main control module STM32F407ZGT6 reads data in the TF card to an internal buffer in a SDIO + DMA transmission mode, so that the data in the memory is analyzed.
The excitation voltage output module adopts a digital-to-analog conversion chip AD5722 to match with an ADI high-speed amplification chip ADA4870 chip, and is used for outputting analog voltage signals read by the TF card. The main control chip STM32F407VGT6 sends the analyzed waveform data to the DA conversion module AD9850 through the SPI, and then signal driving capacity amplification is carried out through the ADA4870 chip. The terminals of the miniature piezoelectric vibration exciters are connected to the analog output interface 3 in fig. 1, and the miniature piezoelectric vibration exciters 108 are temporarily fixed to the glass panel. The function button 5 is pressed to realize the above excitation process, and the glass panel is excited to vibrate.
The analog voltage acquisition module adopts an AD7321 chip for acquiring signals of the IEPE-type acceleration sensor and storing the signals in the TF card placed in the TF card slot 12 in fig. 1. When the excitation module works, namely the function button 5 is pressed, the miniature piezoelectric vibration exciter 108 applies excitation to the glass panel to enable the glass panel to vibrate, the glass panel vibration signal obtained by the IEPE sensor is a weak uV signal, the uV signal enters the AD7321 for collection after being amplified by the amplifier, the controller obtains data through the hardware SPI interface and stores the data into the buffer area, and format conversion is carried out on the data and the data is stored into the TF card through the SDIO interface.
The data analysis module adopts an STM32F407ZGT6 chip and is used for carrying out Fourier transform on the acceleration real-time data and obtaining a spectrum curve of the acceleration real-time data, and the quality and the correctness of the acquired signals can be preliminarily judged through the spectrum curve. The data analysis module receives the signal after data acquisition, namely, the signal is subjected to Fourier transform, and the result is displayed on the liquid crystal screen.
The detection personnel preliminarily judges whether the signal is correct, if so, presses a 'confirm' key and sends the signal to the wireless transmission module; if not, press the "cancel" key and then check the sensor and actuator and repeat the process. After a confirmation key is pressed, firstly storing the acquired data in the TF card, and then uploading the information in the TF card to a server through a 4G or 5G module; and deleting the acquired data after pressing a cancel key, entering real-time acquisition, and waiting for generating the excitation signal again to acquire the data.
In this embodiment, the wireless data transmission module adopts an EC20 chip, as shown in fig. 3, and transmits the acquired vibration data of the glass plate to a remote server through a mobile network. And converting the acquired time domain data, the frequency domain data after Fourier change and the frequency value into a json data format, transmitting the json data to the platform through wireless data, and sending success or failure to equipment after receiving the json data. Meanwhile, setting every 2 minutes, sending a 'search' instruction through the wireless data transmission module, and checking whether wrong plate information exists.
The display and operation module adopts a touch screen and is used for carrying out necessary operations during detection, such as logging in a remote system, checking data, amplifying a curve and the like. The touch screen processes the touch signals according to the recognition result and the set mode, transmits the information to the main control module, and performs instruction sending and information acquisition.
The power supply module is powered by a battery and is charged through a Micro-USB interface.
The principle of the utility model is that:
as shown in fig. 2, before the device is used, the excitation waveform, i.e., the analog voltage signal is stored in the data storage module 102 (in the present embodiment, a TF card is used, as shown in fig. 5), and the data analysis module STM32F407ZGT6 reads the data in the TF card to an internal buffer by the transmission method of SDIO + DMA, so as to analyze the data in the memory. The excitation voltage output module 107 outputs an analog voltage signal read by the TF card, specifically, the main control chip STM32F407VGT6 sends the analyzed waveform data to the DA conversion module AD9850 through SPI, then the signal driving capability is amplified through an ADA4870 chip, then the amplified excitation voltage signal is output to the miniature piezoelectric vibration exciter 108, and the miniature piezoelectric vibration exciter 108 is temporarily fixed on the glass panel to excite the glass panel to vibrate the glass panel. The IEPE type acceleration sensor collects vibration acceleration signals on the glass panel, then outputs the vibration acceleration signals to the analog voltage collection module, and finally carries out Fourier transform on the acceleration real-time data through the data analysis module to obtain a frequency spectrum curve of the acceleration real-time data.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a small-size multi-functional glass curtain wall plate vibration mode measuring device, includes the casing and sets up the circuit board in the casing, its characterized in that, the circuit board includes data analysis module (101) and data storage module (102), power module (103), wireless data transmission module (104) be connected with data analysis module (101) electricity, shows with operation module (105), analog voltage acquisition module (106), excitation voltage output module (107), miniature piezoelectric vibration exciter (108) are connected to excitation voltage output module (107) output, miniature piezoelectric vibration exciter (108) are installed on glass panel (110) that are detected, install acceleration sensor (109) on glass panel (110) that are detected, analog voltage acquisition module (106) are connected to acceleration sensor (109) output.
2. The small multifunctional glass curtain wall plate vibration mode measuring device according to claim 1, wherein a first data acquisition port (1), a second data acquisition port (2), an analog output interface (3), a touch display screen (4), a function button (5), a power switch (6), a determination button (7), a cancel button (8), an internal power charging interface (9), a USB interface (10), a Micro-USB interface (11) and a TF card slot (12) are arranged on the shell.
3. The device for measuring the vibration mode of the small multifunctional glass curtain wall plate according to claim 1, wherein the data analysis module (101) is a single chip processor.
4. The vibration mode measurement device for small multifunctional glass curtain wall plate according to claim 1, wherein the wireless data transmission module (104) is a 4G or 5G module.
5. The vibration mode measurement device for small multifunctional glass curtain wall plate according to claim 1, characterized in that the display and operation module (105) is a touch screen.
6. The vibration mode measurement device for small multifunctional glass curtain wall plate according to claim 1, wherein the analog voltage acquisition module (106) is an AD7321 chip.
7. The device for measuring the vibration mode of the small multifunctional glass curtain wall plate as claimed in claim 1, wherein the excitation voltage output module (107) adopts a digital-to-analog conversion chip AD5722 in combination with an ADI high-speed amplification chip ADA4870 chip.
8. The vibration mode measurement device of small multifunctional glass curtain wall panel according to claim 1, characterized in that the acceleration sensor (109) is an IEPE type acceleration sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121156728.5U CN214583936U (en) | 2021-05-27 | 2021-05-27 | Small multifunctional glass curtain wall plate vibration mode measuring device |
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| CN202121156728.5U CN214583936U (en) | 2021-05-27 | 2021-05-27 | Small multifunctional glass curtain wall plate vibration mode measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114354487A (en) * | 2022-01-12 | 2022-04-15 | 深圳市房屋安全和工程质量检测鉴定中心 | Method for detecting bonding performance of glass curtain wall structural adhesive |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114354487A (en) * | 2022-01-12 | 2022-04-15 | 深圳市房屋安全和工程质量检测鉴定中心 | Method for detecting bonding performance of glass curtain wall structural adhesive |
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