A method and device for identifying the insertion and extraction status of a concrete vibrator

Abstract

The present invention discloses a method and device for identifying the plug-in and pull-out status of a concrete vibrator. The device comprises: a current transformer, a plug-in and pull-out status collection box, a vibrating motor and a vibrating rod. The vibrating rod is connected to the vibrating motor. The current transformer is connected to the live wire of the vibrating motor through the core. The current transformer is connected to the plug-in and pull-out status collection box to transmit the collected current to the plug-in and pull-out status collection box. The plug-in and pull-out status collection box converts the input current into a voltage signal recognizable by a single-chip microcomputer to determine the plug-in and pull-out status of the vibrating rod. The present invention solves the problem that the plug-in and pull-out status of the pouring and vibrating under complex conditions on the existing concrete site is difficult to quantify and identify and accurately record.

Description

Technical Field

[0001] The invention relates to the field of concrete construction quality control, and in particular to a method and a device for identifying the insertion and extraction status of a concrete vibrator. Background Art

[0002] The traditional concrete construction process is uncontrollable, the molding process is irreversible, and the quality of concrete pouring is difficult to guarantee. Once the concrete has defects after final setting, the cost of later repairs is high and time-consuming. Standardized vibration is an important part of ensuring the molding quality during concrete pouring, but the existing vibration construction regulations only provide principled guidance, and there are subjective and non-quantitative problems in the vibration compaction evaluation. At present, the intelligent concrete vibration feedback control system that integrates new technologies such as the Internet of Things, construction information models, and artificial intelligence can solve the problem of extensive vibration process. Among them, accurate and real-time judgment of the plug-in and pull-out status of the vibrating rod is a key link in achieving accurate evaluation of concrete vibration quality.

[0003] Chinese patent document CN110847614A proposes a method for statistically analyzing the vibration time of concrete based on optical fiber sensing. This method determines the insertion and removal of the vibrating rod by laying optical fiber sensors in the concrete of the intended vibrating area to collect the average amplitude data of each area of ​​concrete vibration. However, this method does not meet the requirements of engineering practice and application by laying a large number of optical fibers in the concrete pouring area, and is difficult to promote and implement. Chinese patent CN102507658A proposes installing electrodes on the head of the vibrating rod to collect and analyze the electrode feedback potential value when the vibrating rod is inserted and removed from the concrete to be vibrated to determine the insertion and removal status of the vibrating rod. However, the vibration frequency of the vibrating rod head is as high as about 200Hz. The complex composition of the concrete mixture, especially the components such as aggregate sand and steel bars, can easily damage the rod head electrode that is repeatedly inserted and removed, resulting in the failure of the insertion and removal status determination device. Chinese patent CN111721929A proposes to determine the plug-in and pull-out status based on the change of the current signal during the vibrating process of the vibrating rod, but this method does not take into account the actual construction process, where the vibrating rod randomly touches the steel bars, formwork, etc., resulting in misjudgment as effective insertion into concrete. The determination method is too simplified and cannot adapt to the complex nonlinear feature extraction of the current signal acquisition obtained during the plug-in and pull-out process of the vibrating rod in ordinary concrete structures. It is difficult to handle the fluctuation of the signal and reasonably distinguish the plug-in and pull-out status relationship. It is obviously not suitable for the actual working conditions of complex on-site vibration processes, and does not have the operability and result reproducibility of on-site applications. Chinese patent CN205348802U proposes a state test device including: an AC transformer for collecting the working current of the motor, a filtering and A / D conversion module, and a judgment based on a pre-set current threshold. However, it is also difficult to accurately identify the plug-in and pull-out status of the vibrating rod under complex working conditions by relying solely on a single current threshold. The recognition accuracy cannot be reliably defined, and the effectiveness of actual applications cannot be guaranteed. Summary of the invention

[0004] To this end, the present invention provides a method and device for identifying the insertion and extraction status of a concrete vibrator, so as to solve the problem that the insertion and extraction status of pouring and vibration under complex on-site conditions is difficult to quantify and accurately record.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] According to a first aspect of the present invention, a method for identifying the insertion and extraction status of a concrete vibrator is disclosed, wherein the method comprises:

[0007] S1, the current transformer is suspended through the center of the live wire cable of the motor, and the motor input current is collected to the current input module in the plug-in state collection box, and the current is rectified, converted and amplified to a voltage signal that can be recognized by the single-chip microcomputer;

[0008] S2, the single chip collects the input voltage signal at a frequency of 1000Hz, automatically calculates the average value once every 10ms as the representative data point, and automatically determines and uploads the plug-in status information once per second according to the actual engineering sampling and analysis needs;

[0009] S3, automatically collect at least 1 minute of continuous no-load voltage data, and arrange the no-load voltage data points per second in descending order, select the 15th sequence point as the calculation point, and automatically calculate the average value of the points in the continuous no-load time period as the voltage threshold U t ;

[0010] S4. Collect the no-load voltage, accidental contact with steel bars, and loaded voltage difference data in advance. The number of samples of a single working condition data set is at least 100. The above data are clustered into three categories based on the fuzzy C-means clustering method optimized by the genetic simulated annealing algorithm. The mean of the second and third cluster centers is used as the voltage difference threshold U d ;

[0011] S5. Automatically collect voltage data during the whole vibration process, and calculate and determine the vibration plug-in and plug-out status in real time: take one second as the judgment unit, filter and process the voltage data, and when 75% of the 60 data points per second are greater than the voltage threshold U t Automatically judged as loaded, 75% is less than the voltage threshold U t Automatically judged as unload;

[0012] S6. During normal vibration, workers vibrate concrete for at least 1 second. Therefore, it can be stipulated that when the continuous load time is less than 2 seconds, the load period is corrected to no-load. In actual operation, the vibration time can be set according to the experience and habits of on-site workers.

[0013] Furthermore, in the step S2, after filtering 100 averaged representative data points using a Chebyshev I filter, 300ms to 900ms is automatically selected as a representative time period to determine the plug-in and unplug status.

[0014] Furthermore, in step S5, when the voltage data is not filtered, 75% of the 60 data points per second are greater than or less than the voltage threshold U t The voltage difference is calculated when the voltage difference is greater than the voltage difference threshold U per second. d Automatically judged as loaded, less than the voltage difference threshold U d It is automatically determined to be unloaded.

[0015] Furthermore, after determining the current state of the vibrator, the method sends the determination result to the database through the Zigbee module for storage, displays the current state determination result through the display terminal, and adjusts the corresponding operation according to the state.

[0016] According to a second aspect of the present invention, a device for identifying the plug-in and unplug-out status of a concrete vibrator is disclosed, and the device comprises: a current transformer, a plug-in and unplug-out status collection box, a vibrating motor and a vibrating rod, wherein the vibrating rod is connected to the vibrating motor, the current transformer is connected to the live wire of the vibrating motor through the core, the current transformer is connected to the plug-in and unplug-out status collection box, and the collected current is transmitted to the plug-in and unplug-out status collection box, and the plug-in and unplug-out status collection box converts the input current into a voltage signal recognizable by a single-chip microcomputer to determine the plug-in and unplug-out status of the vibrating rod.

[0017] Furthermore, the current transformer collects the current signal input by the vibrating motor in real time, and the current transformer transmits the current signal to the plug-in status collection box, and the plug-in status collection box processes the current signal.

[0018] Furthermore, the plug-in status acquisition box includes: a power module, a current input module, a single-chip microcomputer, and a Zigbee module. The current input module rectifies the received current signal, and after rectification, part of the current is diverted through a sliding rheostat and converted into a voltage signal recognizable by the single-chip microcomputer. The voltage signal is amplified by the gain of the LM358 component and then transmitted to the single-chip microcomputer. The single-chip microcomputer judges the plug-in status of the vibrator according to the voltage signal, and the judgment result is sent to the database through the Zigbee module for storage.

[0019] Furthermore, the motor input current frequency is 50Hz, and after rectification and conversion by the current input module, it becomes a 100Hz voltage signal with a period of 10ms. The microcontroller sampling frequency is 1000Hz, the sampling period is 1ms, and the average value of every 10 consecutive sampling data is taken as a representative data point.

[0020] Furthermore, after the single chip microcomputer collects the voltage signal, it uses a Chebyshev I filter to filter it. After filtering, the representative data point value of the voltage signal processing from 300ms to 900ms in each 1s is selected as the basis for determining the state characteristics of the 1s.

[0021] The present invention has the following advantages:

[0022] The present invention discloses a method and device for identifying the plugging and unplugging status of a concrete vibrator, which can effectively realize the real-time processing and identification of voltage signals of different working states of the vibrator and the accurate determination of the working plugging and unplugging status, and provides an accurate and reliable method for obtaining plugging and unplugging process parameters for real-time determination of the effective vibrating operation status of the vibrator intelligent construction process in concrete / reinforced concrete pouring;

[0023] The whole process of non-contact vibration parameter collection is realized, and the voltage threshold and voltage difference threshold are jointly determined in the determination model. It only needs to collect the initial data of voltage signals under various typical working conditions such as no-load voltage, voltage of accidentally touching steel bars (formwork, embedded parts), and load. The process is completed before construction, and does not affect the real-time collection and determination of the normal construction process; the intelligent determination device truly realizes the plug-and-play function, and can synchronously accurately, in real time, and reliably obtain the plug-in and unplugging working status of the vibrating rod to obtain the effective vibration time for the traditional concrete vibration construction process. The device and method can be applied to different types of AC vibrating motors and various complex construction sites, and have good universality; the sampling and determination frequency is 1Hz, and the determination accuracy is high (greater than 90%), which fully meets the actual needs of the construction site.

[0024] The intelligent identification device disclosed in the present invention is small in size and easy to install. It does not require any modification to the vibrating rod and the vibrating motor, does not affect the normal construction process, and truly realizes plug-and-play and is suitable for different types of AC vibrating motors and various complex construction sites. The intelligent judgment model takes the DC component as the main eigenvalue based on the characteristics of the voltage signal spectrum, and adopts Chebyshev I filter filtering to effectively reduce the irregular signal fluctuations while retaining the signal characteristics, which is convenient for subsequent signal analysis. The intelligent judgment model adopts a double threshold method to effectively distinguish between no-load and loaded vibration states, wherein the difference threshold is defined based on the genetic simulated annealing optimized fuzzy C-means clustering method, so that the judgment model has a good function of distinguishing the judgment voltage rise caused by accidentally touching the steel bars and inserting into the concrete, and effectively improves the judgment accuracy. The intelligent evaluation model proposes a reliable and flexible loaded state correction method based on the actual construction status, which further improves the feasibility and accuracy of identifying the plug-in vibration state of the vibrating rod at the construction site under complex working conditions, and the recognition accuracy is greater than 90%. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0026] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0027] Figure 1 A schematic diagram of the structure of a device for identifying the plug-in and pull-out status of a concrete vibrator provided by an embodiment of the present invention;

[0028] Figure 2 A flowchart of a plug-in / plug-out status acquisition box of a method for identifying the plug-in / plug-out status of a concrete vibrator provided by an embodiment of the present invention;

[0029] Figure 3 A schematic diagram of a voltage signal frequency domain and time domain of a method for identifying the plug-in and pull-out status of a concrete vibrator provided by an embodiment of the present invention;

[0030] Figure 4 A voltage signal filtering diagram of a method for identifying the plug-in and pull-out status of a concrete vibrator provided by an embodiment of the present invention;

[0031] Figure 5 A flow chart of sampling data processing based on genetic simulated annealing optimization fuzzy C-means clustering method provided in an embodiment of the present invention;

[0032] Figure 6 A real-time determination diagram of a signal processed during the entire vibration process of a method for identifying the plug-in and pull-out status of a concrete vibrator provided by an embodiment of the present invention;

[0033] In the figure: 1-live wire, 2-current transformer, 3-plug-in status acquisition box, 4-vibrating motor, 5-vibrating rod. DETAILED DESCRIPTION

[0034] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1

[0036] This embodiment discloses a method for identifying the plugging and unplugging status of a concrete vibrator 5, the method comprising:

[0037] S1, the current transformer is suspended through the center of the motor live wire 1 cable, and the motor input current is collected to the current input module in the plug-in state collection box 3, and rectified, converted and gain-amplified into a voltage signal that can be recognized by the single-chip microcomputer;

[0038] S2, the single chip collects the input voltage signal at a frequency of 1000Hz, automatically calculates the average value once every 10ms as the representative data point, and automatically determines and uploads the plug-in status information once per second according to the actual engineering sampling and analysis needs;

[0039] S3, automatically collect at least 1 minute of continuous no-load voltage data, and arrange the no-load voltage data points per second in descending order, select the 15th sequence point as the calculation point, and automatically calculate the average value of the points in the continuous no-load time period as the voltage threshold U t ;

[0040] S4. Collect the difference data of no-load voltage, accidental contact with steel bars, and loaded voltage in advance. The number of samples of a single working condition data set is at least 100. Figure 5 Based on the genetic simulated annealing algorithm, the fuzzy C-means clustering method is optimized to cluster the above data into three categories. The mean of the second and third cluster centers is used as the voltage difference threshold U d ;

[0041] S5. Reference Figure 6 , automatically collects voltage data during the whole vibration process, and calculates and determines the vibration plug-in and plug-out status in real time: taking one second as the judgment unit, after filtering and processing the voltage data, when 75% of the 60 data points within one second are greater than the voltage threshold U t Automatically judged as loaded, 75% is less than the voltage threshold U t Automatically judged as unload; the reason for selecting 75% as the state judgment parameter is that the judgment parameter should be between 50% and 100%, the ratio is proportional to the threshold, and the middle value of 75% is selected as the judgment ratio, which has good universality;

[0042] S6. During normal vibration, workers vibrate concrete for at least 1 second. Therefore, it can be stipulated that when the continuous load time is less than 2 seconds, the load period is corrected to no-load. In actual operation, the vibration time can be set according to the experience and habits of on-site workers.

[0043] In the above step S2, a Chebyshev I filter is used to filter 100 averaged representative data points, and then 300ms to 900ms is automatically selected as a representative time period to determine the plug-in and unplug status.

[0044] In this embodiment, the distance explanation step S4 is further explained by taking the concrete pouring example of a certain section of subway line 6 of a certain project to count the probabilities of no-load, accidental contact with steel bars, and loaded three situations occurring in three types of areas as an example:

[0045] Table 1 Voltage difference cluster statistics

[0046] Category I Category II Category 3 No load 0.86 0.14 0 Accidentally touching the steel bar 0.51 0.41 0.08 Loaded 0.25 0.55 0.2

[0047] It can be seen from Table 1 that the no-load conditions are all distributed in the first and second categories, mainly concentrated in the first category, and the difference range is small; the accidental contact with steel bars is distributed in the third category, mainly concentrated in the first and second categories, and the difference range is large; the loaded conditions are mainly distributed in the third category, and the difference range is the largest.

[0048] Taking the mean of the second and third cluster centers as the difference threshold, the no-load difference is 100% less than the difference threshold, and when 75% of the voltage data points do not meet the voltage threshold, it can still be accurately determined as no-load; the difference of accidentally touching the steel bar is 92% less than the difference threshold, and when 75% of the voltage data points do not meet the voltage threshold, it can still be effectively determined as no-load; under the loaded condition, the failure to meet 75% of the voltage data points greater than the voltage threshold mainly occurs before and after plugging and unplugging, and the probability of this situation occurring is about 20% of the probability of the loaded difference distribution in the third category, and it can still be effectively determined as loaded, so step S4 defines the voltage difference threshold U d The method is reasonable.

[0049] In step S5, when the voltage data is not filtered, 75% of the 60 data points per second are greater than or less than the voltage threshold U t The voltage difference is calculated every second. If the voltage difference is greater than the voltage difference threshold Ud, it is automatically determined to be loaded. If it is less than the voltage difference threshold Ud, it is automatically determined to be loaded. d It is automatically determined to be unloaded.

[0050] Through the above technical solution, the function of intelligently identifying and determining the plug-in and pull-out status of the vibrator 5 during the plug-in and pull-out and vibration operation of concrete / reinforced concrete under any working conditions can be effectively realized. After determining the current state of the vibrator 5, the judgment result is sent to the database through the Zigbee module for storage, and the current state judgment result is displayed through the display terminal, and the corresponding operation is adjusted according to the state.

[0051] The method for identifying the insertion and extraction status of the concrete vibrator 5 disclosed in this embodiment is applied to the monitoring of the pouring process of a certain section of a subway line 6. The insertion and extraction status determination results are compared with the on-site synchronous construction image determination, and the accuracy is greater than 90%. Practice has proved that the determination model has a relatively accurate determination accuracy.

[0052] On-site video footage shows that at 50s-54s and 99-102s, vibrator 5 touches the steel bar, and the voltage rise does not meet the requirement that 75% of the voltage data points are less than the voltage threshold, but the difference is less than the voltage difference threshold and is correctly judged as no-load. Practice has shown that the judgment model has the function of accurately distinguishing between the two situations of accidentally touching the steel bar and the voltage rise caused by inserting into concrete, thereby effectively improving the recognition accuracy.

[0053] Example 2

[0054] refer to Figure 1 The present embodiment discloses a device for identifying the plug-in and unplug-out status of a concrete vibrator 5, the device comprising: a current transformer 2, a plug-in and unplug-out status acquisition box 3, a vibrating motor 4 and a vibrating rod 5, the vibrating rod 5 being connected to the vibrating motor 4, the current transformer 2 being connected through the core to the live wire 1 of the vibrating motor 4, the current transformer 2 being connected to the plug-in and unplug-out status acquisition box 3, transmitting the collected current to the plug-in and unplug-out status acquisition box 3, the plug-in and unplug-out status acquisition box 3 converting the input current into a voltage signal recognizable by a single-chip microcomputer, and determining the plug-in and unplug-out status of the vibrating rod 5.

[0055] refer to Figure 2 The current transformer 2 collects the current signal input by the vibrating motor 4 in real time, and the current transformer 2 transmits the current signal to the plug-in status acquisition box 3, and the plug-in status acquisition box 3 processes the current signal; the plug-in status acquisition box 3 includes: a power module, a current input module, a single-chip microcomputer, and a Zigbee module. The current input module rectifies the received current signal, and after rectification, part of the current is diverted through a sliding rheostat and converted into a voltage signal recognizable by the single-chip microcomputer. The voltage signal is amplified by the gain of the LM358 component and transmitted to the single-chip microcomputer. The single-chip microcomputer judges the plug-in status of the vibrating rod 5 according to the voltage signal, and the judgment result is sent to the database through the Zigbee module for storage.

[0056] The motor input current frequency is 50Hz. After rectification and conversion by the current input module, it becomes a 100Hz voltage signal with a period of 10ms. The microcontroller sampling frequency is 1000Hz, the sampling period is 1ms, and the average value of every 10 consecutive sampling data is taken as a representative data point. The corresponding range of the microcontroller A / D conversion is: analog range 0~3.3V, digital range 0~4096.

[0057] After the single chip collects the voltage signal, it uses Chebyshev I filter to filter it. After filtering, the representative data point value of the voltage signal processing from 300ms to 900ms in every 1s is selected as the basis for determining the state characteristics of the 1s. The filtering principle is: according to the actual engineering sampling and analysis needs, the plug-in status information is determined and uploaded once per second. Every 1s of collection, there are 100 averaged representative data points for filtering analysis. The above representative data points are Fourier transformed to obtain the frequency domain diagram. From the frequency domain diagram, it can be seen that the voltage energy is mainly concentrated in the DC component. The DC component is used as the main characteristic value, and the amplitude of the remaining frequency bands is adopted in the attached Figure 3 and 4The filter shown is used for filtering. The intelligent judgment model takes the DC component as the main characteristic value based on the characteristics of the voltage signal spectrum, and uses the Chebyshev I filter to filter, effectively reducing the irregular fluctuation of the signal while retaining the signal characteristics, which is convenient for subsequent signal analysis. The identification device is small in size and easy to install. It does not require any modification of the vibrating rod 5 and the vibrating motor, does not affect the normal construction process, and truly realizes plug-and-play, which is suitable for different types of AC vibrating motors and various complex construction sites.

[0058] The present embodiment discloses a device for identifying the plug-in and unplug-out status of a concrete vibrating rod 5, which realizes the non-contact vibration parameter collection of the entire process, and the determination model combines the voltage threshold and the voltage difference threshold to determine the method. It only needs to collect the initial data of the voltage signal under various typical working conditions, such as no-load voltage, voltage of accidentally touching steel bars (templates, embedded parts), and load. The process completes the pre-collection before construction, and does not affect the real-time collection and determination of the normal construction process; the intelligent determination device truly realizes the plug-and-play function, and can synchronously accurately, in real time, and reliably obtain the plug-in and unplugging working status of the vibrating rod 5 to obtain the effective vibration time for the traditional concrete vibration construction process. The device and method can be applied to different types of AC vibrating motors and various complex construction sites, and have good universality; the sampling and determination frequency is 1Hz, and the determination accuracy is high (greater than 90%), which fully meets the actual needs of the construction site.

[0059] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A method for identifying the insertion and extraction status of a concrete vibrator, characterized in that: The method is: S1, the current transformer is suspended through the live wire cable of the motor, after collecting the input current of the motor, the current signal is transmitted to the current input module in the plug-in status collection box, rectified, converted and gain-amplified into a voltage signal recognizable by the single-chip microcomputer; S2, the single chip collects the input voltage signal at a frequency of 1000Hz, automatically calculates the average value once every 10ms as the representative data point, and automatically determines and uploads the plug-in status information once per second according to the actual engineering sampling and analysis needs; S3, automatically collect at least 1 minute of continuous no-load voltage data, and arrange 60 voltage data points per second in descending order. Then, select the 15th sequence point after descending order as the calculation point, and automatically calculate the average value of the points in the continuous no-load period as the voltage threshold U t ; S4. Collect the no-load voltage, accidental contact with steel bars, and loaded voltage difference data in advance. The number of samples of a single working condition data set is at least 100. The above data are clustered into three categories based on the fuzzy C-means clustering method optimized by the genetic simulated annealing algorithm. The mean of the second and third cluster centers is used as the voltage difference threshold U d ; S5. Automatically collect voltage data during the whole vibration process, and calculate and determine the vibration plug-in and plug-out status in real time: take one second as the judgment unit, filter and process the voltage data, and when 75% of the 60 data points per second are greater than the voltage threshold U t Automatically judged as loaded, 75% is less than the voltage threshold U t Automatically judged as unload; S6. In the actual normal vibration process, workers vibrate the concrete for at least 1 second. Therefore, it can be stipulated that when the continuous load time is less than 2 seconds, the load period is corrected to no load. In actual operation, the vibration time can be set according to the experience and habits of the workers on site; In the step S5, after the voltage data is filtered by the Chebyshev I filter, if it does not meet the condition that 75% of the 60 data points per second are greater than or less than the voltage threshold U t The voltage difference is calculated when the voltage difference is greater than the voltage difference threshold U per second. d Automatically judged as loaded, less than the voltage difference threshold U d It is automatically determined to be unloaded.

2. A method for identifying the insertion and extraction status of a concrete vibrator according to claim 1, characterized in that: In the step S2, a Chebyshev I filter is used to filter 100 averaged representative data points, and then 300ms to 900ms is automatically selected as a representative time period to determine the plug-in and unplug status.

3. The method for identifying the insertion and extraction status of a concrete vibrator according to claim 1, characterized in that: After determining the current state of the vibrating rod, the method sends the determination result to the database through the Zigbee module for storage, displays the current state determination result through the display terminal, and adjusts the corresponding operation according to the state.

4. A device for identifying the insertion and removal status of a concrete vibrator, characterized in that: The device for identifying the plug-in and unplug-out status of a concrete vibrator comprises: a current transformer, a plug-in and unplug-out status collection box, a vibrating motor and a vibrating rod, wherein the vibrating rod is connected to the vibrating motor, the current transformer is connected through the core to the live wire of the vibrating motor, the current transformer is connected to the plug-in and unplug-out status collection box, and the collected current is transmitted to the plug-in and unplug-out status collection box, the plug-in and unplug-out status collection box converts the input current into a voltage signal recognizable by a single-chip microcomputer, and the single-chip microcomputer determines the plug-in and unplug-out status of the vibrating rod according to the method for identifying the plug-in and unplug-out status of a concrete vibrator according to claim 1.

5. A concrete vibrator plug-in / out state identification device as claimed in claim 4, characterized in that: The current transformer collects the current signal input by the vibrating motor in real time, and the current transformer transmits the current signal to the plug-in status collection box, and the plug-in status collection box processes the current signal.

6. A concrete vibrator plug-in / out state identification device as claimed in claim 4, characterized in that: The plug-in status acquisition box includes: a power module, a current input module, a single-chip microcomputer, and a Zigbee module. The current input module rectifies the received current signal, and after rectification, part of the current is diverted through a sliding rheostat and converted into a voltage signal recognizable by the single-chip microcomputer. The voltage signal is amplified by the gain of the LM358 component and then transmitted to the single-chip microcomputer. The single-chip microcomputer judges the plug-in status of the vibrator according to the voltage signal, and the judgment result is sent to the database through the Zigbee module for storage.

7. A concrete vibrator plug-in / out state identification device as claimed in claim 4, characterized in that: The motor input current frequency is 50Hz. After rectification and conversion by the current input module, it becomes a 100Hz voltage signal with a period of 10ms. The microcontroller sampling frequency is 1000Hz, the sampling period is 1ms, and the average value of every 10 consecutive sampling data is taken as a representative data point.

8. A concrete vibrator plug-in / out state identification device as claimed in claim 4, characterized in that: After the single chip microcomputer collects the voltage signal, it uses a Chebyshev I filter to filter it. After filtering, the representative data point value of the voltage signal processing from 300ms to 900ms in each 1s is selected as the basis for determining the state characteristics of the 1s.

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