Safety early warning method and early warning device for hot-line work

Abstract

The invention provides a safety early warning method for hot-line work, and the method comprises the steps: collecting the electric field intensity data of an operator in an operation region, the movement direction and track data of the operator, and the operation height data of the operator through an early warning device, and transmitting the data to a user terminal for processing, judging and recognizing a hot-line region. Drawing an operation area electric field distribution trend chart; the operation area electric field distribution trend chart is drawn by adopting an isobaric line and early warning threshold grading color filling mode, and the movement direction and track data of the operating personnel are combined with the operation area electric field distribution trend chart and are displayed on a user terminal at regular time, so that the operating personnel can perceive the surrounding safety situation; and meanwhile, the electric field intensity increment of the operating personnel in the operating area is judged, and when the electric field intensity increment presents a gradual increasing trend, an alarm is given to realize safety early warning. According to the invention, reliable, effective and accurate judgment and early warning can be carried out on a dangerous electrified area, and an operator can perceive the surrounding safety situation by using a graphical interface.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power safety early warning, and more specifically to a safety early warning method and early warning device for live working. Background Art

[0002] To ensure the safe operation of the power grid, it is necessary to emphasize the construction and maintenance of power facilities. The environment of substations and transmission lines is complex. When personnel are working in live areas, they are too close to live objects, which can easily lead to electric shock accidents and casualties. When live objects appear outside the personnel's field of vision, there will be blind spots in identification. Power construction personnel work at the site of power construction and maintenance all year round. Once they are careless, electric shock accidents are likely to occur, and personal safety is seriously threatened.

[0003] In the existing live operation process, sensor technology and visual technology are used for safety warning. However, when there are multiple charged objects, the effect of relying on a single sensor is not ideal and cannot provide a good safety warning effect. The use of visual technology is easily affected by stray lines or backgrounds, and the image processing accuracy of the charged object is low, resulting in deviations in the image recognition of the charged object, which makes the judgment of the charged area inaccurate, greatly reducing the accuracy and effectiveness of the safety warning. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art and to provide a safety warning method and warning device for live working. The present invention can reliably, effectively and accurately judge and warn of dangerous live areas, and use a graphical interface to allow workers to perceive the surrounding safety situation, avoid electric shock and casualties, and provide a safety management and control method for the construction of smart grids.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a safety warning method for live working, characterized in that: an early warning device is used to collect electric field strength data of workers in the working area, workers' movement direction and trajectory data, and workers' working height data, and transmit them to the user terminal for processing, judgment and identification of live areas, and drawing an electric field distribution trend diagram of the working area; the electric field distribution trend diagram of the working area is drawn by filling with isobars and early warning threshold graded colors, and the workers' movement direction and trajectory data are combined with the electric field distribution trend diagram of the working area, and are displayed on the user terminal at regular intervals so that the workers can perceive the surrounding safety situation; at the same time, the electric field strength increment of the workers in the working area is judged, and when the electric field strength increment shows a gradually increasing trend, an alarm is issued to achieve a safety warning.

[0006] In the above scheme, the safety warning method for live working of the present invention can reliably, effectively and accurately judge and warn of dangerous live areas, and use a graphical interface to allow workers to perceive the surrounding safety situation, avoid electric shock and casualties, and provide safety management and control means for the construction of smart grids.

[0007] The early warning device is worn on the operator.

[0008] The early warning device is calibrated before use, and time is synchronized with the user terminal to ensure synchronous data collection, and the collection interval is set. In order to realize the multi-sensor fusion application in the early warning device, the early warning device worn by the relevant operators is first calibrated to ensure the consistency of all collected data; secondly, the high-precision clock integrated in the user terminal is used for synchronization to ensure that all sensors in the early warning device collect data at the same pace.

[0009] The electric field distribution trend diagram of the working area is drawn by using isobars and warning threshold graded color filling, which means: using the electric field measuring component worn on the head of the operator in the early warning device to collect the electric field strength data of the operator in the working area; using isobars to represent the electric field strength data of the same level of electric field strength area, and obtaining three isobars; the three isobars are used to divide the area into four warning threshold graded areas, and the four warning threshold graded areas are filled with different colors respectively.

[0010] The use of isobars to represent the electric field strength data of the same level of electric field strength area to obtain three isobars means that: the electric field strength data includes an electric field strength value and an electric field strength direction; the operation area is divided into a plurality of grids, wherein the grids in the operator activity area are dense and the grids in other areas are sparse, and each grid is positioned with the center point coordinates; the electric field strength value and the electric field strength direction corresponding to the two grids when the operator moves from one grid to the next adjacent grid are obtained, and the coordinates of the intersection point where the electric field strength directions of the two grids intersect in the horizontal direction are calculated according to the sine theorem, and the cross electric field strength value at the intersection point coordinates is calculated by the electric field strength value of the two grids;

[0011] Threshold ranges of three levels of electric field strength are set, and the cross electric field strength values ​​are divided according to the threshold ranges of the three levels of electric field strength regions. In the same level of electric field strength region, a curve is used to connect the grids corresponding to the cross electric field strength values ​​to form the isobars of the level of electric field strength region.

[0012] The method of judging the increment of the electric field strength of the operator in the working area and giving an alarm when the increment of the electric field strength shows a gradually increasing trend to achieve safety warning means: using the electric field measuring component 2 worn on the operator's hand in the warning device to collect the electric field strength data 2 of the operator in the working area; the electric field strength data 2 includes the electric field strength value 2; and comprising the following steps:

[0013] Step 1: Set the warning start threshold and incremental alarm threshold;

[0014] Step 2, selecting N electric field strength values ​​2 collected continuously within a set collection interval for storage processing;

[0015] Step 3: If P of the consecutive M electric field strength values ​​2 among the N electric field strength values ​​2 exceed the warning start threshold, then go to step 4 to start the electric field strength increment calculation; otherwise, return to step 2;

[0016] Step 3, calculating the increment between two adjacent electric field strength values ​​2 among the N electric field strength values ​​2, that is, N-1 groups of increments; judging whether the N-1 groups of increments present a gradually increasing trend: when among the N-1 groups of increments, there are Q groups of increments that are greater than the set increment alarm threshold, the early warning mechanism is activated and an alarm is issued to achieve safety early warning; otherwise, returning to step 2;

[0017] Among them, N, M, P and Q are all natural numbers, P <N<M,Q<N-1。

[0018] The early warning mechanism realizes early warning by generating sound, light and / or vibration, and sets the early warning level according to the number of increment groups greater than the set incremental alarm threshold; each early warning level sets the periodic frequency of the sound, light and / or vibration generated accordingly.

[0019] A safety warning device for live working, characterized in that: the above-mentioned safety warning method for live working is adopted, characterized in that: the safety warning device for live working comprises:

[0020] helmet;

[0021] Electric field sensors and near-electric wristbands used to collect data on electric field strength of workers in the working area;

[0022] A gyroscope used to collect data on the movement orientation and trajectory of workers;

[0023] A barometer for collecting operating altitude data of operators;

[0024] Alarms for warning and transmitting signals;

[0025] And a user terminal for processing, judging and identifying live areas, drawing a user terminal of the electric field distribution trend diagram of the operation area, and regularly displaying and issuing safety warnings;

[0026] The electric field sensor, gyroscope and barometer are respectively installed on the helmet and are connected to the user terminal signal through the alarm; the user terminal is respectively connected to the alarm and the near-electric bracelet signal.

[0027] The electric field sensors are arrayed with sensing electrodes in five directions: the top, front, back, left and right of the helmet, and are used to sense the position of the charged body relative to the human body and the field strength of the human head; the near-electric bracelet is worn on the hands of the operators; and the user terminal is a smart watch worn on the hands.

[0028] The alarm device uses sound, light and / or vibration to alarm; the periodic frequency of the alarm indication is divided into three levels: the first level alarm indication operates at a periodic frequency of 5s; the second level alarm indication operates at a periodic frequency of 1s; the third level alarm indication operates at a periodic frequency of 0.4s.

[0029] By integrating multiple sensors, we can obtain the electric field distribution trend in the live working area, and use a graphical interface to let workers know the surrounding safety situation.

[0030] The advantages of the safety early warning method and early warning device for live working of the present invention are:

[0031] (1) Multiple sensors are integrated and applied to obtain the electric field distribution trend in the live working area, and a graphical interface is used to allow workers to perceive the surrounding safety situation.

[0032] (2) Use a near-electric bracelet on your hand and an electric field strength increment warning mechanism to more reliably identify and warn of dangerous live areas, thereby avoiding electric shock and casualties.

[0033] (3) Wearable hazard situation awareness and warning devices used by workers working with live lines provide a safety control measure for smart grid construction.

[0034] Compared with the prior art, the present invention has the following advantages and beneficial effects: the safety warning method and warning device for live working of the present invention can reliably, effectively and accurately judge and warn of dangerous live areas, and use a graphical interface to allow workers to perceive the surrounding safety situation, avoid electric shock and casualties, and provide safety management and control means for the construction of smart grids. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural block diagram of the safety warning device for live working of the present invention;

[0036] Figure 2 Schematic diagram of wearing the safety warning device for live working of the present invention;

[0037] Among them, 1 is an electric field sensor, 2 is a barometer, 3 is a gyroscope, 4 is an alarm, 5 is a near-electric bracelet, 6 is a smart watch, 7 is a decision model, and 8 is a helmet. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0039] Example

[0040] like Figure 1 and Figure 2 As shown, the safety warning device for live working of the present invention comprises a helmet 8;

[0041] An electric field sensor 1 and a near-electric bracelet 5 for collecting electric field strength data of workers in the working area;

[0042] Gyroscope 3 for collecting movement position and trajectory data of operators;

[0043] A barometer 2 for collecting operating personnel's operating altitude data;

[0044] An alarm device 4 for alarming and transmitting signals;

[0045] and a smart watch 6 for processing, judging and identifying charged areas, drawing a trend diagram of the electric field distribution in the operation area for user terminals and regularly displaying and issuing safety warnings, the smart watch 6 being provided with a decision model 7;

[0046] Among them, the electric field sensor 1, the gyroscope 3 and the barometer 2 are respectively installed on the helmet 8, and are connected to the smart watch 6 signal via WIFI through the alarm 4, and the smart watch 6 is respectively connected to the alarm 4 and the near-electric bracelet 5 signal.

[0047] The electric field sensor 1 of the present invention is respectively arranged in an array on the top, front, back, left and right sides of the helmet 8, and is used to sense the position of the charged body relative to the human body and the field strength of the human head. The near-electric bracelet 5 is used to be worn on the hand of the operator, and the smart watch 6 is worn on the hand.

[0048] The alarm device 4 uses sound, light and / or vibration to alarm; the periodic frequency of the alarm indication is divided into three levels: the first level alarm indication operates at a periodic frequency of 5s; the second level alarm indication operates at a periodic frequency of 1s; the third level alarm indication operates at a periodic frequency of 0.4s.

[0049] The safety warning method for live working of the present invention is as follows: the decision model 7 of the smart watch 6 processes and determines the received collected signal to identify the live area, and draws the electric field distribution trend map of the working area; the electric field distribution trend map of the working area is drawn by filling the isobars and warning thresholds with graded colors, and the motion coordinates and trajectory data of the operator are combined with the electric field distribution trend map of the working area, and are displayed on the user terminal at regular intervals so that the operator can perceive the surrounding safety situation; at the same time, the increment of the electric field strength of the operator in the working area is judged, and when the increment of the electric field strength shows a gradually increasing trend, an alarm is issued to achieve a safety warning. Among them, the motion coordinates of the operator are calculated by combining the motion orientation of the operator collected by the gyroscope 3 and the working height data of the operator collected by the barometer 2.

[0050] The warning device is calibrated before use, and time is synchronized with the smart watch 6 to ensure that the electric field sensor 1, gyroscope 3 barometer 2 and near-electric bracelet 5 are collected synchronously, and the collection interval is set to 100ms. In order to realize the integrated application of the electric field sensor 1, gyroscope 3 barometer 2 and near-electric bracelet 5, the warning device worn by the relevant operators is first calibrated to ensure that all collected data are consistent; secondly, the high-precision clock integrated in the smart watch 6 is synchronized to ensure that the electric field sensor 1, gyroscope 3 barometer 2 and near-electric bracelet 5 collect at the same pace.

[0051] In addition, the electric field distribution trend diagram of the working area is drawn by using isobars and warning threshold graded color filling, which means: the electric field sensor 1 worn on the head of the operator in the early warning device is used to collect the electric field strength data of the operator in the working area; the electric field strength data of the same level of electric field strength area is represented by isobars, and three isobars are obtained; the three isobars are used to divide the area into four warning threshold graded areas, and the four warning threshold graded areas are filled with different colors respectively.

[0052] The above-mentioned use of isobars to represent the electric field strength data 1 of the area with the same level of electric field strength, and obtaining three isobars means that: the electric field strength data 1 includes the electric field strength value 1 and the electric field strength direction; the operation area is divided into a number of grids, wherein the grids in the operator activity area are dense, and the grids in other areas are sparse, and each grid is positioned with the center point coordinates; the electric field strength value 1 and the electric field strength direction corresponding to the two grids when the operator moves from one grid to the next adjacent grid are obtained, and the intersection coordinates of the electric field strength directions of the two grids intersecting in the horizontal direction are calculated according to the sine theorem, and the cross electric field strength value at the intersection coordinates is calculated by the electric field strength value 1 of the two grids;

[0053] Threshold ranges of three levels of electric field strength are set, and the cross electric field strength values ​​are divided according to the threshold ranges of the three levels of electric field strength regions. In the same level of electric field strength region, a curve is used to connect the grids corresponding to the cross electric field strength values ​​to form the isobars of the level of electric field strength region.

[0054] In addition, the three isobars are used to divide the four warning threshold grading areas, and the four warning threshold grading areas are filled with different colors, which means that the four warning threshold grading areas are filled with red, orange, yellow and green respectively according to the severity level from high to low.

[0055] In the method, the above-mentioned determination of the increment of the electric field strength of the operator in the working area and the alarming when the increment of the electric field strength shows a gradually increasing trend to achieve safety warning means: using the near-electric bracelet 5 worn on the operator's hand to collect the electric field strength data 2 of the operator in the working area; the electric field strength data 2 includes the electric field strength value 2; including the following steps:

[0056] Step 1: Set the warning start threshold and incremental alarm threshold;

[0057] Step 2, selecting 10 sets of electric field strength values ​​collected continuously within a set collection interval for storage processing;

[0058] Step 3: if 3 of the 5 consecutive electric field strength values ​​2 among the 10 groups of electric field strength values ​​2 exceed the warning start threshold, then go to step 4 to start the electric field strength increment calculation; otherwise, return to step 2;

[0059] Step three, calculate the increments between two adjacent electric field strength values ​​2 in the 10 groups of electric field strength values ​​2, that is, 9 groups of increments; determine whether the 9 groups of increments show a gradually increasing trend: when 5 groups of increments in the 9 groups of increments are greater than the set increment alarm threshold, the early warning mechanism is activated and an alarm is issued to achieve a safety early warning; otherwise, return to step two.

[0060] The early warning mechanism realizes early warning by generating sound, light and / or vibration, and sets the early warning level according to the number of increment groups greater than the set incremental alarm threshold; each early warning level sets the periodic frequency of the sound, light and / or vibration generated accordingly.

[0061] The advantages of the safety early warning method and early warning device for live working of the present invention are:

[0062] (1) Security situation awareness and electric field increment warning method

[0063] The decision model 7 of the smartwatch 6 processes the received and collected signals to identify the charged area and draws the electric field distribution trend map of the operation area. The electric field distribution trend map of the operation area is drawn by filling the isobars and warning threshold graded colors, and the motion coordinates and trajectory data of the operator are combined with the electric field distribution trend map of the operation area, and are displayed on the user terminal at a fixed time to facilitate the operator to perceive the surrounding safety situation. The operator observes the personal position coordinates in the warning threshold graded colors to perceive the degree of danger of the operation.

[0064] In addition, the increase in the electric field strength of the operators in the working area is judged, and when the increase in the electric field strength shows a gradually increasing trend, an alarm is issued to achieve safety warning.

[0065] (2) Multi-sensor fusion application

[0066] The safety warning device for live working of the present invention integrates multiple functional sensors, including a gyroscope 3 and a barometer 2; an electric field sensor 1 installed on the head and the hand, and a near-electricity bracelet 5 to obtain the electric field distribution trend in the working area and perform near-electricity detection; a smart watch 6 and an alarm 4 to sense the safety situation and status warning of the working area.

[0067] In order to realize the integrated application of electric field sensor 1, gyroscope 3 barometer 2 and near-electric bracelet 5, the early warning device worn by the relevant operating personnel is first calibrated to ensure the consistency of all collected data; secondly, the high-precision clock integrated in the smart watch 6 is synchronized to ensure that the electric field sensor 1, gyroscope 3 barometer 2 and near-electric bracelet 5 are collected at the same pace, and the collection interval is set to 100ms.

[0068] (3) Design of wearable electric field sensor

[0069] The electric field sensor 1, gyroscope 3, barometer 2, and alarm 4 are integrated into the human head safety helmet 8, and the near-electric bracelet 5 and smart watch 6 are worn on the operator's wrist to construct wearable work equipment; a decision model 7 with analysis and service functions is developed and integrated into the smart watch 6. The above technical route solves the problem of miniaturization and portable application of the device.

[0070] The electric field sensor 1 has the function of measuring the electric field size and the orientation of the charged body, which satisfies the miniaturization of the device and is adapted to the safety helmet 8. The electric field sensor 1 array is composed of 5 components, which are respectively arranged in an array on the top, front, back, left and right directions of the helmet 8, and can be fixed by a sensor fixing sleeve.

[0071] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A safety early warning method for live working, characterized in that: An early warning device is used to collect data on the electric field strength of workers in the working area, data on the movement direction and trajectory of workers, and data on the working height of workers, and transmits the data to the user terminal for processing, identification of charged areas, and drawing of an electric field distribution trend diagram for the working area; the electric field distribution trend diagram for the working area is drawn by filling in isobars and early warning threshold graded colors, and the movement direction and trajectory data of workers are combined with the electric field distribution trend diagram for the working area, and are displayed on the user terminal at regular intervals to facilitate workers to perceive the surrounding safety situation; at the same time, the increment of the electric field strength of workers in the working area is judged, and when the increment of the electric field strength shows a gradually increasing trend, an alarm is issued to achieve a safety early warning.

2. The safety early warning method for live working according to claim 1 is characterized in that: The early warning device is worn on the operator.

3. The safety warning method for live working according to claim 1 is characterized in that: The early warning device is calibrated before use, time is synchronized with the user terminal to ensure synchronous collection of the early warning device, and the collection interval is set.

4. The safety early warning method for live working according to claim 3 is characterized in that: The electric field distribution trend diagram of the working area is drawn by using isobars and warning threshold graded color filling, which means: using the electric field measuring component worn on the head of the operator in the early warning device to collect the electric field strength data of the operator in the working area; using isobars to represent the electric field strength data of the same level of electric field strength area, and obtaining three isobars; the three isobars are used to divide the area into four warning threshold graded areas, and the four warning threshold graded areas are filled with different colors respectively.

5. The safety warning method for live working according to claim 4 is characterized in that: The use of isobars to represent the electric field strength data of the same level of electric field strength area to obtain three isobars means that: the electric field strength data includes an electric field strength value and an electric field strength direction; the operation area is divided into a plurality of grids, wherein the grids in the operator activity area are dense and the grids in other areas are sparse, and each grid is positioned with the center point coordinates; the electric field strength value and the electric field strength direction corresponding to the two grids when the operator moves from one grid to the next adjacent grid are obtained, and the coordinates of the intersection point where the electric field strength directions of the two grids intersect in the horizontal direction are calculated according to the sine theorem, and the cross electric field strength value at the intersection point coordinates is calculated by the electric field strength value of the two grids; Threshold ranges of three levels of electric field strength are set, and the cross electric field strength values ​​are divided according to the threshold ranges of the three levels of electric field strength regions. In the same level of electric field strength region, a curve is used to connect the grids corresponding to the cross electric field strength values ​​to form the isobars of the level of electric field strength region.

6. The safety warning method for live working according to claim 3 is characterized in that: The method of judging the increment of the electric field strength of the operator in the working area and giving an alarm when the increment of the electric field strength shows a gradually increasing trend to achieve safety warning means: using the electric field measuring component 2 worn on the operator's hand in the warning device to collect the electric field strength data 2 of the operator in the working area; the electric field strength data 2 includes the electric field strength value 2; and comprising the following steps: Step 1: Set the warning start threshold and incremental alarm threshold; Step 2, selecting N electric field strength values ​​2 collected continuously within a set collection interval for storage processing; Step 3: If P of the consecutive M electric field strength values ​​2 among the N electric field strength values ​​2 exceed the warning start threshold, then go to step 4 to start the electric field strength increment calculation; otherwise, return to step 2; Step 3, calculating the increment between two adjacent electric field strength values ​​2 among the N electric field strength values ​​2, that is, N-1 groups of increments; judging whether the N-1 groups of increments present a gradually increasing trend: when among the N-1 groups of increments, there are Q groups of increments that are greater than the set increment alarm threshold, the early warning mechanism is activated and an alarm is issued to achieve safety early warning; otherwise, returning to step 2; Among them, N, M, P and Q are all natural numbers, P <N<M,Q<N-1。 7. The safety warning method for live working according to claim 6, characterized in that: The early warning mechanism realizes early warning by generating sound, light and / or vibration, and sets the early warning level according to the number of increment groups greater than the set incremental alarm threshold; each early warning level sets the periodic frequency of the sound, light and / or vibration generated accordingly.

8. A safety warning device for live working, characterized by: The safety warning method for live working according to any one of claims 1 to 7 is characterized in that: the safety warning device for live working comprises: helmet; Electric field sensors and near-electric wristbands used to collect data on electric field strength of workers in the working area; A gyroscope used to collect data on the movement orientation and trajectory of workers; A barometer for collecting operating altitude data of operators; Alarms for warning and transmitting signals; And a user terminal for processing, judging and identifying live areas, drawing a user terminal of the electric field distribution trend diagram of the operation area, and regularly displaying and issuing safety warnings; The electric field sensor, gyroscope and barometer are respectively installed on the helmet and are connected to the user terminal signal through the alarm; the user terminal is respectively connected to the alarm and the near-electric bracelet signal.

9. The safety warning device for live working according to claim 8, characterized in that: The electric field sensors are arranged in arrays on the top, front, back, left and right sides of the helmet to sense the position of the charged body relative to the human body and the field strength of the human head. The near-electric bracelet is used to be worn on the hand of the operator; the user terminal is a smart watch worn on the hand.

10. The safety warning device for live working according to claim 8, characterized in that: The alarm device uses sound, light and / or vibration to alarm; the periodic frequency of the alarm indication is divided into three levels: the first level alarm indication operates at a periodic frequency of 5s; the second level alarm indication operates at a periodic frequency of 1s; the third level alarm indication operates at a periodic frequency of 0.4s.

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