A hand held concrete vibrator work position sensing and feedback system

Abstract

This invention discloses a handheld concrete vibrator working position sensing and feedback system, comprising: a vibrator working position sensing device, a main control and early warning device, a cloud database, and a calculation program. The vibrator working position sensing device consists of a positioning glove and a smart vibrator. The positioning glove is equipped with a positioning mobile station, and the flexible section of the smart vibrator is equipped with multi-parameter sensing devices. The main control and early warning device receives data transmitted from the positioning mobile station and the multi-parameter sensing devices and sends it to the cloud database. Simultaneously, it receives early warning information from the cloud calculation program and outputs an early warning. The cloud database and calculation program calculate the vibrator working position and determine the vibration spacing, and push the early warning information to the main control and early warning device. This invention, through the collaborative sensing architecture of the positioning glove and the smart vibrator, achieves accurate quantification of the vibrator's working position and intelligent early warning of the vibration spacing, effectively solving the problems of easily blocked positioning signals and easily damaged equipment in existing technologies.

Description

Technical Field

[0001] This invention relates to the field of intelligent construction equipment technology, specifically to a handheld concrete vibrator working position sensing and feedback system. Background Technology

[0002] In concrete vibration compaction in building construction, the control of the vibration spacing of handheld vibrators directly affects the construction quality. However, currently, the control of vibration spacing mainly relies on manual experience, which leads to uncontrollability in the concrete construction process and easily results in incomplete compaction, posing a safety hazard to the long-term safe and stable operation of concrete structures. Furthermore, existing vibration construction methods lack effective means of quantitatively identifying the working position of the vibrator, making it impossible to trace the vibration trajectory, which greatly hinders the development of intelligent and precise management of vibration construction.

[0003] To address the aforementioned issues, existing research techniques often involve directly installing a positioning mobile station on the metal tube at the front end of the vibrator to obtain its working position. However, this approach has significant drawbacks:

[0004] ① The positioning mobile station is fixed to the metal tube at the front end of the vibrator. During operation, this part needs to be inserted into the concrete and is surrounded by steel mesh, which can easily lead to the positioning signal being blocked and the positioning accuracy being greatly reduced.

[0005] ②The front metal rod tube is in direct contact with the concrete, and the positioning mobile station installed here is susceptible to wear, vibration and impact damage.

[0006] Currently, how to avoid interference between concrete and reinforcing steel to achieve precise quantification of the working position of the vibrator and standardized control of the spacing remains a problem that urgently needs to be solved in this field. Summary of the Invention

[0007] The technical problem to be solved by this invention is to overcome the problems of uncontrollable vibration spacing and difficulty in quantifying the working position of the vibrator in existing concrete vibration construction, as well as the problems of signal blockage and interference and equipment damage caused by the positioning mobile station being installed on the metal tube at the front end of the vibrator in existing positioning technology. This invention provides a handheld concrete vibrator working position sensing and feedback system to achieve accurate quantitative identification of the working position of the vibrator and intelligent early warning and control of the vibration spacing, while avoiding positioning interference, protecting the positioning equipment, and ensuring the quality of concrete vibration construction.

[0008] To solve the above problems, the present invention adopts the following technical solution:

[0009] This invention proposes a handheld concrete vibrator working position sensing and feedback system, characterized in that it includes a vibrator working position sensing device, a main control early warning device, a cloud database and a calculation program, and realizes data interaction through wireless communication;

[0010] The vibratory rod working position sensing device consists of a positioning glove and a smart vibratory rod.

[0011] A positioning mobile station is fixedly installed on the positioning glove; the positioning mobile station synchronously transmits the real-time spatial coordinates of the worker's left hand and right hand to the main control and early warning device.

[0012] The intelligent vibratory rod has a multi-parameter sensing device fixedly installed on its flexible hose section. The multi-parameter sensing device includes a distance measuring reference module and an attitude angle sensing module. The distance measuring reference module is used to collect the straight-line distance between the multi-parameter sensing device and the positioning glove. The attitude angle sensing module is used to collect the tilt attitude of the vibratory rod. The multi-parameter sensing device transmits the collected distance and attitude parameters to the main control early warning device.

[0013] The main control early warning device is used to receive data transmitted from the positioning mobile station and multi-parameter sensing devices and send it to the cloud database. At the same time, it receives early warning information fed back by the cloud computing program and outputs early warning.

[0014] The cloud database and computing program are deployed on a cloud server to process the data transmitted by the main control and early warning device, complete the calculation of the working position of the vibrator, determine the vibration spacing, and push early warning information to the main control and early warning device.

[0015] Preferably, the positioning glove is a structure worn by workers on both hands, and the positioning mobile station is fixedly installed on the palm and back of the glove to establish communication with the base station pre-deployed in the construction site, and to synchronously transmit the real-time collected spatial coordinates (x1, y1, z1) of the worker's left hand and (x2, y2, z2) of the right hand to the main control and early warning device.

[0016] Preferably, the multi-parameter sensing device further includes a housing, a wireless communication module, a battery module, and a microcontroller, wherein the ranging reference module, the attitude angle sensing module, the wireless communication module, the battery module, and the microcontroller are integrated inside the housing;

[0017] The ranging reference module is used to collect the straight-line distance between the multi-parameter sensing device and the two positioning gloves;

[0018] The attitude angle sensing module is used to collect the rotation angle of the intelligent vibrating rod around the X-axis and Y-axis;

[0019] The wireless communication module is used to transmit the collected straight-line distance and rotation angle to the main control early warning device in real time;

[0020] The microcontroller is used to coordinate the startup, operation, and data transmission of each module.

[0021] Preferably, the outer shell adopts a waterproof and dustproof structure design and is installed on the flexible hose section of the intelligent vibrating rod by an adjustable fixing buckle. The fixed distance between the installation position of the outer shell and the head of the intelligent vibrating rod is set as d. The installation position is such that it is not covered by concrete during the construction process and is always between the worker's grip point and the head of the intelligent vibrating rod.

[0022] Preferably, the main control early warning device consists of a shell, a wireless communication module, a speaker, a vibration motor, a battery module, and a microcontroller;

[0023] The wireless communication module is used to receive data transmitted by the positioning mobile station and multi-parameter sensing devices and send it to the cloud database, while also receiving early warning information fed back by the cloud computing program;

[0024] The speaker and vibration motor are used to collaboratively output early warning feedback when early warning information is received;

[0025] The microcontroller is used to coordinate and control the orderly operation of each module.

[0026] Preferably, the outer shell of the main control early warning device adopts a lightweight waterproof and dustproof structure and is installed on the side of the worker's safety helmet by an adjustable fixing buckle.

[0027] Preferably, the cloud database and computing program are used to execute the following method for calculating the working position of the intelligent vibratory tamping rod:

[0028] Based on the fact that when workers operate the vibratory rod, the grip point near the rod head and the hose between the rod head are approximately straight, and the elevation of the grip point near the rod head is lower than that of the grip point far from the rod head, the coordinates of the grip point near the rod head are selected from the spatial coordinates of both hands collected by the positioning gloves.

[0029] By combining the coordinates of the near-head grip point, the straight-line distance between the near-head grip point and the head of the vibrator, and the tilt angle of the vibrator, the real-time working position coordinates of the vibrator head are calculated according to the principle of spatial linear projection.

[0030] The calculated working position coordinates are combined with timestamps and stored in a cloud database to form a record of the vibration position trajectory.

[0031] Preferably, the cloud database and computing program are also used to perform the following method for determining the change of vibration location:

[0032] The vibration position is dynamically determined based on the elevation change of the working position of the intelligent vibrator: when the working position continuously decreases in height beyond a preset threshold and stays in the same position for a duration beyond a preset threshold, it is considered a vibration and the position is recorded; when the working position continuously rises beyond a preset threshold and then continuously decreases beyond a preset threshold and stays in the new position for a duration beyond a preset threshold, it is determined that the position has changed.

[0033] Preferably, the cloud database and computing program are also used to execute the following vibration spacing determination and early warning push method:

[0034] The actual vibration spacing is calculated in real time as the working position plane distance between two adjacent vibrations and compared with the preset reasonable vibration spacing range;

[0035] If the actual vibration spacing exceeds the reasonable range, an early warning message will be sent to the main control early warning device, and a preset adjustment period will be given.

[0036] The warning content will be dynamically adjusted within the adjustment period; if the actual vibration spacing still does not reach the reasonable range after the adjustment, an non-compliant operation will be recorded and stored in the cloud database.

[0037] Preferably, the cloud database and computing program are also used to achieve data traceability and non-compliant operation recording during the construction process:

[0038] The working position of the vibrator, the vibration spacing, the operation time, and the data on non-compliant operations are synchronously stored in the cloud database to form a complete record of the construction process.

[0039] When a worker fails to adjust the vibration spacing to a reasonable range within the preset adjustment time period, an irregular operation is automatically recorded, and the relevant data is stored in association.

[0040] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0041] (1) This invention places the positioning mobile station on the positioning gloves worn by workers and places the multi-parameter sensing device on the flexible section of the vibrating rod. The position of the rod head is indirectly calculated through a collaborative architecture of hand positioning and posture perception, effectively avoiding the obstruction and interference of the positioning signal by concrete burial and steel mesh. Under shallow vibration conditions, the average positioning errors in the X, Y, and Z directions are as low as 1.7cm, 1.4cm, and 0.9cm, respectively, and under deep vibration conditions, they are as low as 3.8cm, 4.5cm, and 2.6cm, respectively. Compared with the existing technology that directly installs the positioning device on the rod head, the positioning accuracy is improved by more than 50%.

[0042] (2) The positioning mobile station is set in the glove part, and the multi-parameter sensing device is set in the hose section and protected by a waterproof and dustproof shell. Neither of them needs to directly contact the concrete, avoiding equipment damage caused by high-frequency vibration impact and concrete wear, greatly extending the service life of the equipment, and reducing the frequency of on-site equipment replacement and maintenance costs.

[0043] (3) This invention uses a closed-loop control system of perception-calculation-feedback to calculate the working position of the vibrator and determine the vibration spacing in real time. For non-compliant operations, the main control early warning device provides dual feedback through vibration reminders and voice guidance via the vibration motor and speaker. Actual test data shows that after the early warning function is enabled, the compliance rate of vibration spacing increases from 78.3% to 96.8%, effectively solving the problem of uncontrollable spacing control by manual experience and avoiding quality defects such as insufficient compaction and concrete segregation.

[0044] (4) The multi-parameter sensing device of the present invention is installed on the vibrating rod hose section by an adjustable fixing buckle, and the main control early warning device is installed on the side of the worker's safety helmet by an adjustable fixing buckle. No modifications are required to the existing vibrating rod and safety helmet, and the worker's original working habits are not changed. It can be adapted to different models of handheld vibrating rods and various concrete vibration conditions.

[0045] (5) The cloud database of the present invention can store the working position trajectory of the vibrator, vibration spacing, operation time and non-compliant operation records in real time, forming a complete construction process data chain, providing reliable data support for subsequent quantitative assessment of construction quality, accountability and process optimization, and helping concrete vibration construction to upgrade to intelligent and refined directions. Attached Figure Description

[0046] Figure 1 This invention relates to a handheld concrete vibrator working position sensing and feedback system.

[0047] Figure label:

[0048] 1. Positioning gloves; 2. Positioning mobile station; 3. Intelligent vibrating rod; 4. Multi-parameter sensing device; 5. Housing (multi-parameter sensing device); 6. Distance measurement reference module; 7. Attitude angle sensing module; 8. Wireless communication module (multi-parameter sensing device); 9. Battery module (multi-parameter sensing device); 10. Microcontroller (multi-parameter sensing device); 11. Adjustable fixing buckle (multi-parameter sensing device); 12. Main control and early warning device; 13. Housing (main control and early warning device); 14. Wireless communication module (main control and early warning device); 15. Speaker; 16. Vibration motor; 17. Battery module (main control and early warning device); 18. Microcontroller (main control and early warning device); 19. Adjustable fixing buckle (main control and early warning device); 20. Cloud database; 21. Cloud computing program. Detailed Implementation

[0049] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0050] Example 1: This example discloses a handheld concrete vibrator working position sensing and feedback system, focusing on the specific implementation of the vibrator working position sensing device and working position calculation method, and verifying the positioning accuracy and practicality of the present invention.

[0051] The vibratory rod working position sensing device consists of a positioning glove 1 and a smart vibratory rod 3. The specific structure, selection and installation method of each component are as follows:

[0052] The positioning gloves 1 are designed to fit both hands of the worker. A positioning mobile station 2 (model DW1000) is fixedly installed on the back of the palm of each glove. In this embodiment, an ultra-wideband (UWB) positioning system is used to achieve precise hand positioning. At least three UWB positioning reference stations (model DW1000) need to be pre-deployed within the construction site. The reference stations are evenly distributed at the edge of the construction area in unobstructed locations to ensure that the positioning signal covers the entire vibration operation area. The positioning mobile station 2 can establish stable wireless communication with the reference stations deployed within the construction site, accurately collecting the real-time spatial coordinates of the worker's hands. The positioning mobile station 2 then transmits the sensed spatial coordinates of the worker's left hand (x1, y1, z1) and right hand (x2, y2, z2) to the cloud database 20 for storage via the main control and early warning device 12. In this embodiment, a MySQL database is used to manage the cloud data, enabling real-time storage, retrieval, and tracking of the positioning coordinates.

[0053] The intelligent vibrating rod 3 has a multi-parameter sensing device 4 fixedly installed on its flexible hose section. The multi-parameter sensing device 4 is integrated with a housing 5, a ranging reference module 6, an attitude angle sensing module 7, a wireless communication module 8, a battery module 9, and a microcontroller 10. These modules work collaboratively to achieve parameter acquisition and data transmission. Details are as follows:

[0054] The outer shell 5 is made of insulating plastic material, which effectively avoids the interference of metal materials on the operation of internal electronic modules and wireless communication. The outer shell 5 is flexibly installed on the vibratory rod hose through adjustable fixing buckles 11. In this embodiment, the installation position is clearly 80 cm away from the rod head. The installation position strictly follows two core requirements: first, it should not be covered by concrete during the construction process to ensure positioning accuracy; second, it should always be between the worker's grip point and the vibratory rod head.

[0055] The ranging reference module 6 is a UWB ranging reference module (model DW1000), which is matched with the positioning mobile station 2 on the positioning glove 1. It can establish real-time communication with the positioning mobile stations 2 on both gloves and accurately collect the straight-line distance between the multi-parameter sensing device 4 and the two positioning gloves 1, which are recorded as D1 (distance to the left-hand positioning mobile station) and D2 (distance to the right-hand positioning mobile station), respectively, providing key calculation parameters for establishing the positional relationship between the grip point and the stick head.

[0056] The attitude angle sensing module 7 adopts the Asensing IMS5562 model with anti-vibration function, which is suitable for the high-frequency vibration of the vibrator at the construction site. It can accurately sense the spatial tilt attitude of the vibrator and focus on collecting the rotation angle of the vibrator around the X-axis and Y-axis, which are recorded as β1 and β2 respectively (β1 and β2 are zero points when the vibrator is vertical). This provides another type of key calculation parameter for establishing the position relationship between the grip point and the head of the vibrator.

[0057] The wireless communication module 8 adopts a 5G industrial-grade communication module (model EC200S), which has the advantages of low latency, anti-interference and stable transmission. It is used to transmit the collected parameters D1, D2, β1 and β2 synchronously to the cloud database 20 for storage via the main control and early warning device 12.

[0058] The battery module 9 adopts a 5V boost charging integrated module, which supports repeated charging and can provide a stable and continuous power supply for all modules inside the multi-parameter sensing device 4.

[0059] The microcontroller 10 uses an STM32F030F4 series microcontroller as the control core of the multi-parameter sensing device 4, controlling the startup, operation and data interaction of the other modules, ensuring that the modules work together and the data acquisition is accurate.

[0060] Furthermore, in this embodiment, the cloud computing program 21 is written in JAVA and deployed on an Alibaba Cloud server. It can call various types of data stored in the cloud database 20 and transmitted by the main control and early warning device 12 in real time, and calculate the working position of the vibrator rod using the following method:

[0061] Based on on-site observations and statistical results, as well as workers' actual operating habits, the core judgment rule is summarized as follows: When a worker operates a vibrator, the flexible hose section between the nearest grip point (near the vibrator head) and the vibrator head is usually approximately straight; and the elevation (Z-axis coordinate) of the near-head grip point is usually lower than the elevation of the other grip point (far from the vibrator head). Based on this rule, the steps for calculating the spatial coordinates of the vibrator head are as follows:

[0062] Step 1: Grip Point Selection. From the spatial coordinates (x1, y1, z1) and (x2, y2, z2) of the left and right hands collected by the positioning glove 1, select the coordinates with the lower elevation (Z-axis value) as the spatial coordinates of the grip point near the stick head, denoted as (x0, y0, z0); the straight-line distance between the grip point near the stick head and the multi-parameter sensing device 4 is denoted as D0.

[0063] Step 2: Parameter determination. Match the spatial coordinates (x0, y0, z0) of the grip point near the rod head at the same moment, the straight-line distance (D0+d) between the grip point near the rod head and the rod head, and the rotation angles β1 and β2 of the vibrator around the X-axis and Y-axis;

[0064] Step 3: Coordinate Calculation. Based on the principle of spatial linear projection and the above parameters, the spatial coordinates of the vibrator head are calculated using the following formula. These coordinates represent the real-time working position of the vibrator (x, y). t ,y t ,z t (All coordinates and distances in this embodiment are calculated in centimeters (cm):)

[0065]

[0066]

[0067]

[0068] Step 4: Data storage. Vibratory rod working position (x...) t ,y t ,z t After the calculation is completed, the data is synchronously stored in the cloud database 20 along with the corresponding data collection timestamp, forming a complete record of the vibration location trajectory, which is convenient for subsequent data retrieval and construction quality traceability.

[0069] To verify the positioning accuracy and engineering application effect of the present invention, this embodiment applies the vibratory rod working position sensing device and position calculation method to the vibration construction of floor slabs (20 cm thick, shallow vibration condition) and support columns (3 m high, deep vibration condition) in a commercial housing construction project. Simultaneously, this embodiment selects two published UWB positioning vibratory rod working position technologies and compares their positioning accuracy with that of the present invention. The two comparison technologies are as follows:

[0070] Comparative technology ①: Two UWB positioning mobile stations are fixedly placed on the metal tube at the front end of the vibrating rod, and the position coordinates of the rod head are directly collected through the mobile stations;

[0071] Comparison Technique ②: A UWB positioning mobile station is placed at the end of the metal tube at the front end of the vibrating rod, and an attitude angle sensor is fixed on the metal tube at the same time. The position of the rod head is calculated by combining the positioning data and attitude data.

[0072] The statistical results of positioning errors and standard deviations generated by the two comparative techniques and the present invention during the vibration construction of floor slabs and supporting columns in the same commercial housing construction project are shown in Tables 1 and 2 below:

[0073] Table 1

[0074]

[0075] Table 2

[0076]

[0077] Table 1 compares the working position sensing technologies of different vibrators under shallow vibration conditions (floor slabs), and Table 2 compares the working position sensing technologies of different vibrators under deep vibration conditions (support columns). Based on the comparative data in Tables 1 and 2, the following conclusions are drawn:

[0078] Under shallow vibration conditions (floor slabs), the positioning accuracy and stability of comparative technology ① are significantly worse than those of comparative technology ② and the present invention. The core reason is that after the vibrator is inserted into the concrete, the concrete severely hinders the communication between the UWB positioning mobile station installed on the metal rod tube in comparative technology ① and the reference station above the steel mesh, resulting in positioning signal attenuation and increased error. In contrast, the UWB positioning mobile station of comparative technology ② and the present invention is not inserted into the concrete, so the communication is not significantly affected, and the positioning accuracy is better.

[0079] Under deep vibration compaction conditions (support columns), the positioning accuracy and stability of this invention are significantly superior to comparative technologies ① and ②. The core advantage is that when the vibrator is inserted deep into the concrete, the UWB positioning mobile station installed on the metal tube at the front end of the vibrator in comparative technologies ① and ② is affected by both concrete obstruction and interference from the reinforcing mesh, resulting in severe communication obstruction with the reference station and a significant increase in positioning error. In contrast, in this invention, the UWB positioning mobile station worn by the worker is always above the reinforcing mesh, ensuring smooth communication with the reference station deployed on the reinforcing mesh without obstruction or significant interference. At the same time, the UWB ranging reference module on the vibrator hose and the UWB positioning mobile station on the worker's hand are on the same straight line and mutually "visible," limiting the impact of communication obstruction and enabling accurate ranging, thereby ensuring the accuracy and stability of the vibrator head position calculation.

[0080] In summary, this embodiment fully demonstrates that the vibration work position positioning device and method proposed in this invention, which uses the worker's hand as a medium, can effectively avoid positioning interference caused by concrete and steel mesh compared with existing publicly disclosed technologies in the same field. It has higher positioning accuracy, stronger stability, and better engineering application effects, and can meet the diverse needs of shallow and deep vibration at construction sites.

[0081] Example 2: This example discloses a handheld concrete vibrator working position sensing and feedback system, focusing on the specific implementation of the feedback information push method in the main control early warning device 12 and the cloud computing program 21, and verifying the advantages of the present invention in improving the compliance rate of vibration operation and ensuring construction quality.

[0082] The main control and early warning device 12, serving as the core of the system's field feedback, mainly consists of a housing 13, a wireless communication module 14, a speaker 15, a vibration motor 16, a battery module 17, and a microcontroller 18. The specific structure, selection, and installation method of each component are as follows:

[0083] The outer shell 13 is made of insulating plastic material, which effectively avoids the interference of metal materials on the operation of internal electronic modules and wireless communication. The outer shell is installed on the side of the worker's safety helmet near the ears by adjustable fixing buckles 19. After installation, it does not affect the worker's head movement, and the voice played by the speaker 15 can be clearly received by the worker, and the vibration of the vibration motor 16 can be perceived by the worker in a timely manner.

[0084] The wireless communication module 14 adopts a 5G industrial-grade communication module (model EC200S), which has two-way communication function and can be used to receive early warning information sent by the cloud computing program 21 to ensure the real-time transmission of early warning instructions.

[0085] The speaker 15 is a 3015 model SMD surface-mount speaker, which is small in size, low in power consumption, and has clear sound quality. It is compatible with the miniaturized design of the main control early warning device and is used to play precise voice guidance to guide workers to adjust the vibration position when the worker's vibration spacing does not meet the preset reasonable range.

[0086] The vibration motor 16 is a 1030 flat micro vibration motor, which is small in size, provides obvious vibration feedback, and has low power consumption. It is used to start vibration before the speaker plays voice guidance (the vibration duration is set to 1.5s), reminding workers to concentrate and receive subsequent voice guidance information in a timely manner, so as to avoid workers missing the warning prompts due to the noise of the construction site.

[0087] The battery module 17 adopts a 5V boost charging integrated module, which supports repeated charging and can provide a stable and continuous power supply to all modules inside the main control and early warning device.

[0088] The microcontroller 18 uses an STM32F030F4 series microcontroller as the control core of the main control and early warning device 12. It coordinates the start-up, operation and interaction of the other modules to ensure the orderly reception of early warning information, vibration reminders and voice playback.

[0089] The core of the feedback information push method is to achieve intelligent determination and early warning of vibration spacing, ensuring that workers' operations comply with construction specifications. The specific principle is as follows:

[0090] Step 1: Preset parameters. Before construction, technicians preset a reasonable vibration spacing range in the cloud calculation program 21 according to the actual construction requirements. In this embodiment, the reasonable vibration spacing range is set to 30-50 cm. At the same time, the parameters h (height threshold) and t (dwelling time threshold) required for the vibration position change judgment are calibrated. In this embodiment, h and t are set to 40 cm and 3s, respectively.

[0091] Step 2: Determining if the vibration position changes. After the vibration operation starts, the cloud-based calculation program 21 determines whether the vibration position has changed based on the elevation change of the vibrator's working position: when the vibrator's working position (z... t When the vibrator continuously decreases in height by more than 40 cm and remains at the fixed position for more than 3 seconds, it is considered as one vibration, and the working position of the vibrator is recorded. Subsequently, when the working position of the vibrator continuously increases in height by more than 40 cm, and then continuously decreases in height by more than 40 cm and remains at the fixed position for more than 3 seconds, it is determined as a position change, and so on, to realize the dynamic determination of the vibration working position change.

[0092] Step 3: Spacing Comparison and Early Warning Push. The cloud-based computing program 21 calculates the planar distance between the working positions of the vibrator in two adjacent vibrations in real time, using this distance as the actual vibration spacing. This distance is then compared with the preset reasonable vibration spacing range, and corresponding feedback information is pushed based on the comparison results.

[0093] 1) If the actual vibration spacing is within the preset reasonable vibration spacing range, no warning information will be sent, and workers can continue to work normally;

[0094] 2) If the actual vibration spacing is less than or greater than the reasonable vibration spacing range, the cloud calculation program 21 continuously sends warning information to the main control early warning device 12. The warning message is: "Vibration spacing too large / too small, reduce / increase spacing by L centimeters." L is the difference between the median of the actual vibration spacing and the reasonable vibration spacing. After sending the warning information, the worker is given a preset adjustment time period T=20 seconds.

[0095] 3) During the adjustment period, the cloud computing program does not update the working position of the vibrator from the previous vibration, but dynamically adjusts the warning voice content based on the real-time working position of the vibrator; if the worker adjusts the vibration position to a reasonable range within the adjustment time T=20s, the cloud computing program 21 immediately stops sending warning information.

[0096] 4) If the actual vibration spacing still does not reach the reasonable range after the adjustment time ends, the cloud calculation program 21 records a non-compliant operation and stores the relevant data of the non-compliant operation (including vibration position, actual spacing, operation time) in the cloud database 20 to facilitate quality control during construction.

[0097] To verify the practicality and application effect of the main control early warning device 12 and the feedback information push method in this invention, this embodiment applies it to the vibration construction of a commercial housing construction project. A group of 10 workers (all with basic vibration operation experience) were selected, and concrete vibration construction under the same working conditions was carried out under two conditions: "early warning function off" and "early warning function on". The compliance rate of the workers' vibration spacing operation under the two conditions was counted to verify the guidance effect of the early warning system.

[0098] Actual test results show that when the warning function is turned off, workers rely solely on their experience to control the vibration spacing, resulting in an average compliance rate of 78.3%. Some workers had vibration spacing that was too small (leading to concrete segregation) or too large (leading to insufficient compaction of concrete). When the warning function is turned on, workers can quickly and effectively adjust the vibration spacing with the assistance of vibration reminders and voice guidance. The average compliance rate of vibration spacing increases to 96.8%, the number of non-compliant operations is significantly reduced, and the quality of vibration operations is significantly improved.

[0099] This embodiment fully demonstrates the practicality of the feedback information push method in the main control early warning device 12 and the cloud computing program 21 in this invention. It can effectively reduce the impact of workers' experience on the quality of vibration operation, quickly improve the standardization of workers' vibration operation, reduce non-compliant operations, and thus ensure the quality of concrete vibration construction. It has strong engineering promotion value.

[0100] The specific implementation schemes described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific implementation schemes of the present invention and are not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A handheld concrete vibrator working position sensing and feedback system, characterized in that, It includes a vibratory rod working position sensing device, a main control early warning device (12), a cloud database (20) and a computing program (21), and achieves data interaction through wireless communication; The vibratory rod working position sensing device consists of a positioning glove (1) and a smart vibratory rod (3); A positioning mobile station (2) is fixedly installed on the positioning glove (1); the positioning mobile station (2) synchronously transmits the spatial coordinates of the worker's left hand and right hand, which are collected in real time, to the main control early warning device (12). The intelligent vibratory rod (3) has a multi-parameter sensing device (4) fixedly installed on the flexible section of the vibratory rod. The multi-parameter sensing device (4) includes a distance measuring reference module (6) and an attitude angle sensing module (7). The distance measuring reference module (6) is used to collect the straight-line distance between the multi-parameter sensing device (4) and the positioning glove (1). The attitude angle sensing module (7) is used to collect the tilt attitude of the vibratory rod. The multi-parameter sensing device (4) transmits the collected distance and attitude parameters to the main control early warning device (12). The main control early warning device (12) is used to receive data transmitted by the positioning mobile station (2) and the multi-parameter sensing device (4) and send it to the cloud database (20), and at the same time receive the early warning information fed back by the cloud computing program (21) and output the early warning. The cloud database (20) and calculation program (21) are deployed on the cloud server to process the data transmitted by the main control early warning device (12), complete the calculation of the working position of the vibrator, determine the vibration spacing, and push early warning information to the main control early warning device (12).

2. The system according to claim 1, characterized in that, The positioning glove (1) is a structure worn by workers on both hands. The positioning mobile station (2) is fixedly installed on the palm and back of the glove. It is used to establish communication with the base station pre-deployed in the construction site and to synchronously transmit the spatial coordinates (x1, y1, z1) of the worker's left hand and (x2, y2, z2) collected in real time to the main control early warning device (12).

3. The system according to claim 1, characterized in that, The multi-parameter sensing device (4) also includes a housing (5), a wireless communication module (8), a battery module (9), and a microcontroller (10). The ranging reference module (6), attitude angle sensing module (7), wireless communication module (8), battery module (9), and microcontroller (10) are integrated inside the housing (5). The ranging reference module (6) is used to collect the straight-line distance between the multi-parameter sensing device (4) and the two positioning gloves (1); The attitude angle sensing module (7) is used to collect the rotation angle of the intelligent vibrating rod (3) around the X-axis and Y-axis; The wireless communication module (8) is used to transmit the collected straight distance and rotation angle to the main control early warning device (12) in real time. The microcontroller (10) is used to coordinate the startup, operation and data transmission of each module.

4. The system according to claim 3, characterized in that, The outer shell (5) adopts a waterproof and dustproof structure design and is installed on the flexible section of the intelligent vibrating rod (3) by an adjustable fixing buckle (11). The fixed distance between the installation position of the outer shell (5) and the head of the intelligent vibrating rod (3) is set as d. The installation position is such that it is not covered by concrete during the construction process and is always between the worker's grip point and the head of the intelligent vibrating rod (3).

5. The system according to claim 1, characterized in that, The main control early warning device (12) consists of a shell (13), a wireless communication module (14), a speaker (15), a vibration motor (16), a battery module (17), and a microcontroller (18); The wireless communication module (14) is used to receive data transmitted by the positioning mobile station (2) and the multi-parameter sensing device (4) and send it to the cloud database (20), and at the same time receive the early warning information fed back by the cloud computing program (21); The speaker (15) and the vibration motor (16) are used to collaboratively output early warning feedback when early warning information is received; The microcontroller (18) is used to coordinate and control the orderly operation of each module.

6. The system according to claim 5, characterized in that, The outer shell (13) of the main control early warning device (12) adopts a lightweight waterproof and dustproof structure and is installed on the side of the worker's safety helmet by an adjustable fixing buckle (19).

7. The system according to claim 1, characterized in that, The cloud database (20) and the calculation program (21) are used to perform the following method for calculating the working position of the intelligent vibrating rod (3): Based on the fact that when workers operate the vibratory rod, the grip point near the rod head and the hose between the rod head are approximately straight, and the elevation of the grip point near the rod head is lower than that of the grip point far from the rod head, the coordinates of the grip point near the rod head are selected from the spatial coordinates of both hands collected by the positioning gloves (1). By combining the coordinates of the near-head grip point, the straight-line distance between the near-head grip point and the head of the vibrator, and the tilt angle of the vibrator, the real-time working position coordinates of the vibrator head are calculated according to the principle of spatial linear projection. The calculated working position coordinates are combined with the timestamp and stored in the cloud database (20) to form a record of the vibration position trajectory.

8. The system according to claim 7, characterized in that, The cloud database (20) and calculation program (21) are also used to perform the following vibration location change determination method: The vibration position is dynamically determined based on the elevation change of the working position of the intelligent vibrator (3): when the working position continuously decreases in height beyond the preset threshold and stays in the same position for a longer time than the preset threshold, it is considered as one vibration and the position is recorded; when the working position continuously rises beyond the preset threshold and then continuously decreases beyond the preset threshold and stays in the new position for a longer time than the preset threshold, it is determined as a position change.

9. The system according to claim 7, characterized in that, The cloud database (20) and calculation program (21) are also used to perform the following vibration spacing determination and early warning push method: The actual vibration spacing is calculated in real time as the working position plane distance between two adjacent vibrations and compared with the preset reasonable vibration spacing range; If the actual vibration spacing exceeds the reasonable range, an early warning message is sent to the main control early warning device (12), and a preset adjustment time period is given; The warning content is dynamically adjusted within the adjustment period; if the actual vibration spacing still does not reach the reasonable range after the adjustment is completed, an non-compliant operation is recorded and stored in the cloud database (20).

10. The system according to claim 7, characterized in that, The cloud database (20) and computing program (21) are also used to achieve data traceability and non-compliant operation records during the construction process: The working position of the vibrator, the vibration spacing, the operation time and non-compliant operation data are synchronously stored in the cloud database (20) to form a complete construction process record; When a worker fails to adjust the vibration spacing to a reasonable range within the preset adjustment time period, an irregular operation is automatically recorded, and the relevant data is stored in association.

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