CN116704723B - Personnel gathering detection method - Google Patents
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Abstract
The application discloses a personnel gathering detection method, and belongs to the field of dangerous safety production monitoring. The application constructs a spherical detection space by taking a person or a certain designated point as a detection point and in a stippling ball mode, adopts detection means such as personnel positioning and the like to detect the aggregation degree of the person in each area, gives out alarm information when the number of people exceeds a certain threshold value, and divides alarm areas with different levels according to the working danger level and measurement and positioning errors. And the union sets are taken for each alarm area, so that the alarm area division is optimized, and the alarm times of the same type are reduced. And tracing back the identity, the position and the behavior track of the person in the detection range according to the alarm content, obtaining the alarm occurrence process and the influence range, and providing basis for subsequent processing and prevention. In order to avoid personnel omission caused by a single detection mode, auxiliary detection equipment (such as a camera, an infrared detector and the like) is arranged in a working environment, and detection results are compared with those detected by a stippling ball detection mode, so that the accuracy of personnel gathering detection is ensured.
Description
Technical Field
The application relates to the field of dangerous safety production monitoring, in particular to a method for detecting personnel aggregation in any area of dangerous safety production.
Background
Industrial processes involve a number of unpredictable hazards, particularly chemical processes involving highly hazardous materials such as toxic materials, flammable and explosive materials, corrosive materials, etc., which can potentially cause leakage, fire, explosion, etc. Chemical production often involves complex processes and operations, sometimes requiring multiple people to work cooperatively, gathering people in the same area or facility. Exceeding the standard of people in the production environment increases the risk of accident occurrence and casualties after accident occurrence. Therefore, there is a need to severely limit the number of personnel in the production area, particularly in the installation area where there is a risk of explosion. By detecting the aggregation condition of personnel, the personnel density in each production area can be better controlled, the safety of the production site is ensured, and the casualties caused by accidents are reduced.
The people gathering detection mainly has the following problems:
(1) The personnel gathering detection in the industrial production environment mainly adopts personnel positioning modes such as electronic fence, video monitoring and hot spot detection, and equipment such as wireless equipment, cameras or thermal infrared imagers are installed at fixed positions to acquire the gathering degree of surrounding personnel. However, dangerous points in an industrial production environment often change and personnel flow frequently, and a fixed and limited number of detection points are difficult to comprehensively reflect the condition of personnel accumulation in the whole production environment.
(2) The actual production environment is a complex three-dimensional space, intersections or intervals exist among different detection areas, and even if people in each detection area are controlled to gather, people in a local space or an overall environment cannot be avoided. In addition, when the required detection area changes, the fixed detection point and the detection radius increase the difficulty of analysis and calculation, and reduce the accuracy of personnel gathering detection.
(3) The common personnel aggregation detection method needs to transmit personnel data acquired on site to a central control platform, and the personnel aggregation condition in the production environment is obtained through analysis and calculation. When the production environment and personnel distribution change continuously, the detection data volume and the calculation complexity increase rapidly, so that the detection result is output with lag, the personnel aggregation in a certain time range can be caused, and the risk of the production process is increased.
Disclosure of Invention
The application aims to: in order to overcome the defects in the prior art method, the application provides a dynamic detection method for personnel aggregation, which has higher effectiveness, accuracy and instantaneity.
The application adopts the following technical scheme:
a method of people gathering detection comprising the steps of:
s101, in a detected working environment, each person carries equipment for positioning the person, and the equipment acquires and transmits the position information of the person in real time; the total number of people is recorded asNEach detection period is setNA plurality of moving detection points respectively corresponding toNMarking the place where the name personnel are located at the current moment;
s102, taking each person as a sphere center,RFor measuring the radius, a spherical detection space which follows the movement of the person is formed; in particular, the application is also applicable to a two-dimensional plane with the center of a person,RTo measure radius, a circular area is formed and follows the detection scene of the movement of the person (the circular area is a special form of spherical space);
s103, detecting the aggregation condition of the personnel, wherein in each spherical detection space, if the detection points of other personnel from the space are recorded within a certain measurement radius, when the number of the personnel in the space reaches a set threshold value, an alarm is generated and a monitoring platform is reported.
In a more preferred embodiment, it further comprises the steps of:
s104, acquiring contact conditions between spherical detection spaces with alarms in real time, and scoringx i Whereini=1, 2, or 3;
s105, acquiring the conditions of other alarm-generating spherical detection spaces in which the personnel are located in the alarm-generating spherical detection space in real time, and scoringy j Whereinj=1, 2, or 3;
and S106, reporting the monitoring platform and alarming after the comprehensive score of the contact condition of the spherical detection space with the alarm and the condition of other spherical detection spaces with the alarm of the personnel reaches a threshold value.
In a more preferred embodiment, in S102, the radius is measuredRDynamic change, comprising:
establishing a three-dimensional space for the detected working environment, wherein each person has different coordinates in the three-dimensional space as a sphere center, and assigning each coordinate with different measuring radiuses based on specific working conditionsRMeasuring radius as personnel moveRDynamically changing.
In a more preferred embodiment, the measuring radiusRDynamic changes also include: dynamic adjustment of measuring radius with variation of risk coefficientRSize of:
wherein the risk factor iseThe greater the value, the more dangerous the motion, the risk coefficienteObtained by video detection;indicating the adjusted detection radius.
Specifically, in S104:
1) If the two spherical detection spaces with alarm do not have a common area, the area alarm level is low, and the alarm is playedx 1 Dividing;
2) If the two spherical detection spaces with alarm exist in the common area, the alarm grade of the area is middle, and the alarm is playedx 2 Dividing;
3) If more than two spherical detection spaces with alarm exist in a common area, the area alarm level is high, and the alarm is playedx 3 Dividing into two parts.
Specifically, in S105:
1) If the personnel only belong to one other spherical detection area with alarm, the personnel alarm level is low, and the person is hity 1 Dividing;
2) If the personnel belong to two other spherical detection areas with alarm, the personnel alarm grade is middle, and the person is hity 2 Dividing;
3) If the personnel belong to more than two other spherical detection areas with alarm, the personnel alarm level is high, and the person is hity 3 Dividing into two parts.
BetterIn an alternative scheme, personnel positioning errors are setrThe sphere detection space for each person is divided into the following:
the core area is positioned in the core area;
is positioned in the non-core area;
wherein:sis the closest distance between the common area and the center of the sphere.
Specific:
-when the contact condition of the sphere detection space in which the alarm occurs is taken as the examination target, the comprehensive score =x i /s；
-when the condition of the sphere detection space where the person is located and other alarm occurs is taken as the assessment target, the comprehensive score =y j /s；
When comprehensively considering the contact condition of the spherical detection space with alarm and the condition of other spherical detection spaces with alarm where personnel are located, the comprehensive score = = -thex i +y j )/s。
In a more preferable scheme, personnel information in a detection range is traced back according to alarm content, personnel identity, position and behavior track are determined, the occurrence process and influence range of an alarm event are known, and a basis is provided for subsequent processing and prevention.
In a more preferable scheme, the number of people entering and exiting the space channel is detected in real time through a camera or an infrared sensor device, so that the condition that people leak detection exists is avoided, and the emergency treatment efficiency and accuracy are improved.
(1) The spherical space generated by personnel positioning equipment is used for acquiring the number of surrounding personnel and obtaining the personnel density, so that the personnel aggregation degree in any area can be effectively controlled;
(2) The detection radius of each detection point is adjusted according to the dangerous degree of the personnel working, and the alarm range is divided into a core alarm area and a non-core alarm area due to errors of the positioning device, so that the detection safety is improved;
(3) Classifying alarm conditions according to the intersection of different alarm areas caused by the flow of people, and adopting corresponding emergency measures according to the alarm levels, thereby reducing casualties caused by safety accidents;
(4) Backtracking personnel information in the detection space according to the alarm range, and determining personnel identity, position and behavior track through the system;
(5) Through equipment such as camera or infrared sensor, real-time supervision space passageway business turn over number, avoid having personnel to leak the condition of examining, promote the validity and the accuracy of detecting.
Drawings
Fig. 1 is a schematic diagram of a personnel aggregation detection method according to an embodiment of the present application.
Fig. 2 is a schematic diagram of alarm region classification provided in an embodiment of the present application.
Fig. 3 is a schematic diagram of low-level classification of personnel areas at alarm points provided in an embodiment of the application.
Fig. 4 is a schematic diagram of a mid-level alarm in an alarm point personnel area provided in an embodiment of the present application.
Fig. 5 is a high-level alarm schematic diagram of an alarm point personnel area provided in an embodiment of the present application.
Description of the embodiments
The application is further illustrated below with reference to examples, but the scope of the application is not limited thereto:
the components of the application and the interrelationship and action thereof:
the number of people in the whole working environment is recorded asNEach person is taken as a mobile detection point and comprisesNThe detection points are respectively recorded asP 1 ，P 2 ，…，P N The method comprises the steps of carrying out a first treatment on the surface of the The measurement radius of each detection point is respectively recorded asR 1 ，R 2 ，…，R N 。
The working principle of the application is as follows:
each person is provided with a person positioning device (such as bluetooth, radio frequency, etc.), as shown in fig. 1, the application provides a person aggregation detection method:
s101, in a certain production area, the personnel number is recorded asNEach person is taken as a mobile detection point and comprisesNThe detection points are respectively recorded asP 1 ，P 2 ，…，P N The method comprises the steps of carrying out a first treatment on the surface of the The measurement radius of each detection point is respectively recorded asR 1 ，R 2 ，…，R N 。
S102, taking personnel as a sphere center,RTo measure the radius, a spherical space is formed and follows the movement of the person. In particular, the application is also applicable to a two-dimensional plane with the center of a person,RTo measure the radius, a circular area is formed and follows the detection scene of the movement of the person (the circular area is a special form of spherical space).
S103, detecting the aggregation condition of the personnel, wherein in each spherical detection space, if the detection points of other personnel from the space are recorded within a certain measurement radius, when the number of the personnel in the space reaches a set threshold value, an alarm is generated and a monitoring platform is reported.
In a preferred embodiment, the present application further includes step S104: the contact condition of the spherical detection space with alarm and other surrounding spherical detection spaces with alarm is obtained in real time, and is scoredx i Whereini=1, 2, or 3; the number and the density of surrounding personnel can be obtained in real time, so that the aggregation degree of the personnel in the whole area can be effectively controlled. The setting mode of the spherical space not only can realize the accurate control of the personnel movable range, but also can rapidly detect the aggregation condition of the personnel, and can timely take measures to avoid potential safety hazards.
S105, in the spherical space where the detection point is located, if other people are within a certain measurement radius from the detection point, the detection point records and carries out corresponding processing, acquires the conditions of other spherical detection spaces where the people are located and give an alarm in real time, and beatsDividing intoy j Whereinj=1, 2, or 3;
s106, reporting the monitoring platform and giving an alarm after the comprehensive score of the contact of the spherical detection space and the spherical detection space of other personnel reaches a threshold value; the alarm mechanism can timely discover potential safety risks and improve production safety precaution level.
As shown in fig. 2, the application corrects the personnel positioning error and divides the alarm area:
in the application, due to the problems of errors caused by the factors of limited number of detection points, fixed measurement radius, personnel positioning equipment and the like, the alarm range needs to be corrected according to personnel positioning errors in the actual application process.
As shown in FIG. 2, a certain detection point is taken as a sphere center, and a personnel positioning error is taken asrRadius ofR-rIs a sphere of (2)AThe inside is a core alarm area; in addition, the detection point is taken as a sphere center, and the radius is taken asR+rIs a sphere of (2)BInner sphereAThe other parts are non-core alarm areas, and the core alarm areas and the non-core alarm areas are respectively divided, so that more accurate alarm and management are achieved.
As shown in fig. 3-5, the personnel density in the same area has a certain influence on the alarm level, and the following classifications are made:
and carrying out alarm classification on the union areas intersected by different alarm points. The classification mode can more precisely and accurately judge the alarm grades under different conditions so as to process and manage in time, and as shown in figures 3-5, the specific alarm grades are classified as follows:
(1) As shown in FIG. 3, if the two spherical detection spaces with alarms do not have a common area, the alarm level is low, and the alarm is playedx 1 Dividing into two parts. It is shown that the two detection spaces have no overlapping parts, are in a relatively independent working state and are therefore in a relatively low risk position.
(2) As shown in FIG. 4, if two spherical detection spaces with alarms exist in a common area, the alarm level is a middle level, and the alarm is playedx 2 Dividing into two parts. Indicating that the two detection spaces may generate certainThere is a safety risk for interaction of the (c) with the (d) device, which requires attention and monitoring.
(3) As shown in FIG. 5, if more than two sphere detection spaces with alarm exist in a common area, the alarm level is high, and the alarm is givenx 3 Dividing into two parts. It is indicated that there are multiple spherical detection spaces where alarms occur at the same time at the intersection, and some dangerous or abnormal situations may occur, requiring immediate action to be taken for treatment and intervention.
Similarly, the detection method considers personnel hazards, and classifies personnel hazard classes into:
(1) If the personnel only belong to one other spherical detection area with alarm, the personnel alarm level is low, and the person is hity 1 Dividing;
(2) If the personnel belong to two other spherical detection areas with alarm, the personnel alarm grade is middle, and the person is hity 2 Dividing;
(3) If the personnel belong to more than two other spherical detection areas with alarm, the personnel alarm level is high, and the person is hity 3 Dividing into two parts.
Obtaining the distance between different persons according to the longitude and latitude information of the position provided by the personnel positioning equipment (the personnel positioning equipment in the current market can provide the longitude and latitude information of the position of the equipment and calculate the distance between the two equipment according to the longitude and latitude information), if the distance is smaller thanRThe person is considered to be within the sphere detection space.
Based on the two different considerations, the method presents 3 different detection directions altogethersAlarm when threshold is exceeded):
-when the contact condition of the sphere detection space in which the alarm occurs is taken as the examination target, the comprehensive score =x i /s；
-when the condition of the sphere detection space where the person is located and other alarm occurs is taken as the assessment target, the comprehensive score =y j /s；
-comprehensively considering the contact condition of the sphere detection space where the alarm occurs and the condition of other sphere detection spaces where the person is located where the alarm occursIn condition, the comprehensive score =x i +y j )/s。
Furthermore, the application also provides a method for assigning different detection radiuses to each coordinate point in the detected working environment according to the working position of the personnel (according to the working condition hazard level) in order to develop alarm classification, wherein the different hazard levels are provided at different positions of different chemical enterprisesRThe higher the dangerous level of the working condition is, the radius is detectedRLarger) and dynamic adjustment of the detection radius for the motion risk levelRThe method comprises the steps of (1) collecting photo samples of different actions of a person and labeling, (2) classifying the samples into a training set and a test set, (3) training a model by using the training set sample, (4) verifying the model by using the test set, (5) determining an optimal model, (6) inputting image data intercepted in real time by video recognition into the optimal model and outputting corresponding risk coefficientse) The method comprises the steps of carrying out a first treatment on the surface of the Wherein, the dynamic radius adjustment according to the dangerous coefficient of the motion specifically means: with the change of the dangerous coefficient, the radius is dynamically adjusted:
wherein the risk factor iseThe larger the value, the more dangerous the action;indicating the adjusted detection radius.
The scheme of the application dynamically adjusts the radius according to the dangerous coefficient of the work done by the personnelRThe size of the device can control the moving range of personnel more accurately, and meanwhile, the radius is set according to different working positions, so that false alarm or missing alarm situations are reduced.
In the application, the monitoring platform backtracks the personnel information in the detection range according to the alarm range and determines the personnel identity, the position and the behavior track, and the specific steps are as follows:
firstly, personnel need to wear a personnel positioning device, such as a tablet type, a helmet type or a bracelet type, and the device can acquire and store the name, the work number and the position information of the personnel in real time and transmit data to a monitoring platform in real time through a wireless communication technology.
And secondly, when an alarm event occurs, emergency responses of different levels, such as high-level response, medium-level response and the like, are made according to different levels of the alarm, and corresponding processing is carried out according to different alarm events so as to ensure the safety of personnel and the normal operation of production.
Finally, after the system alarms, the monitoring platform can inquire related data according to the time and place of the alarm, determine the identity and the position of the personnel related to the alarm, trace the moving track of the personnel within a certain time, and the system knows the occurrence process and the influence range of the alarm event according to track analysis so as to provide basis for subsequent processing and prevention.
In the application, the number of people entering and exiting the space channel is monitored in real time through equipment such as a camera or an infrared sensor, and the missing detection of the people is avoided, and the method comprises the following specific steps:
firstly, corresponding wireless access points, clients and antennas are required to be deployed in a space, a wireless network is established and used for collecting and transmitting signals and data positioned by personnel, and the wireless access points, clients and antennas deployed in the space are required to cover the whole space area according to a certain planning and layout, so that the signals and data can be completely transmitted and received.
Secondly, the collected data needs to be processed and calculated by using a data analysis method, such as correlation analysis, so as to obtain information of the position, state, quantity and the like of each personnel positioning device.
Then, a passenger flow counter is used, the number of people entering and exiting the space channel is monitored in real time through equipment such as a camera or an infrared sensor, and the number of people is sent to a monitoring platform in real time for checking.
And finally, when the monitoring platform discovers that the personnel is missed to be detected or abnormal, the specific position and the track of the personnel are rapidly determined, and an alarm prompt or notification is timely sent to related personnel, so that the emergency treatment efficiency and accuracy are improved.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the application. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the application or exceeding the scope of the application as defined in the accompanying claims.
Claims (7)
1. A method of people gathering detection comprising the steps of:
s101, in a detected working environment, each person carries equipment for positioning the person, and the equipment acquires and transmits the position information of the person in real time; the total number of people is recorded asNEach detection period is setNA plurality of moving detection points respectively corresponding toNMarking the place where the name personnel are located at the current moment;
s102, taking each person as a sphere center,RFor measuring the radius, a spherical detection space which follows the movement of the person is formed;
s103, detecting the aggregation condition of the personnel, wherein in each spherical detection space, if the detection points of other personnel from the space are recorded within a certain measurement radius, when the number of the personnel in the space reaches a set threshold value, an alarm is generated and a monitoring platform is reported;
s104, acquiring contact conditions between spherical detection spaces with alarms in real time, and scoringx i Whereini=1, 2, or 3; s104:
1) If the two spherical detection spaces with alarm do not have a common area, the area alarm level is low, and the alarm is playedx 1 Dividing;
2) If the two spherical detection spaces with alarm exist in the common area, the alarm grade of the area is middle, and the alarm is playedx 2 Dividing;
3) If more than two spherical detection spaces with alarm exist in a common area, the area alarm level is high, and the alarm is playedx 3 Dividing;
s105, obtaining in real timeTaking the condition of other sphere detection spaces with alarm in which the personnel are located in the sphere detection space with alarm, and scoringy j Whereinj=1, 2, or 3; s105:
1) If the personnel only belong to one other spherical detection area with alarm, the personnel alarm level is low, and the person is hity 1 Dividing;
2) If the personnel belong to two other spherical detection areas with alarm, the personnel alarm grade is middle, and the person is hity 2 Dividing;
3) If the personnel belong to more than two other spherical detection areas with alarm, the personnel alarm level is high, and the person is hity 3 Dividing;
and S106, reporting the monitoring platform and alarming after the comprehensive score of the contact condition of the spherical detection space with the alarm and the condition of other spherical detection spaces with the alarm of the personnel reaches a threshold value.
2. The method of claim 1, wherein in S102, the radius is measuredRIs dynamically variable, comprising:
establishing a three-dimensional space for the detected working environment, wherein each person has different coordinates in the three-dimensional space as a sphere center, and assigning each coordinate with different measuring radiuses based on specific working conditionsRMeasuring radius as personnel moveRDynamically changing.
3. The method of claim 2, wherein the radius is measuredRDynamic changes also include: dynamic adjustment of measuring radius with variation of risk coefficientRSize of:
wherein the risk factor iseThe greater the value, the more dangerous the motion, the risk coefficienteObtained by video detection; />Indicating the adjusted detection radius.
4. The method of claim 1, wherein personnel positioning errors are setrThe sphere detection space for each person is divided into the following:
the core area is positioned in the core area;
is positioned in the non-core area;
wherein:sis the closest distance between the common area and the center of the sphere.
5. The method according to claim 4, wherein:
-when the contact condition of the sphere detection space in which the alarm occurs is taken as the examination target, the comprehensive score =x i /s；
-when the condition of the sphere detection space where the person is located and other alarm occurs is taken as the assessment target, the comprehensive score =y j /s；
When comprehensively considering the contact condition of the spherical detection space with alarm and the condition of other spherical detection spaces with alarm where personnel are located, the comprehensive score = = -thex i +y j )/s。
6. The method of claim 1, wherein personnel information in the detection range is traced back according to alarm content, personnel identity, position and behavior track are determined, the occurrence process and influence range of the alarm event are known, and basis is provided for subsequent processing and prevention.
7. The method according to claim 1, wherein the number of people entering and exiting the space channel is detected in real time through a camera or an infrared sensor device, the presence of missed detection of people is avoided, and the emergency treatment efficiency and accuracy are improved.
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