CN114664068B - Physical labor fatigue early warning system and method - Google Patents
Physical labor fatigue early warning system and method Download PDFInfo
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
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Abstract
The invention discloses a physical labor fatigue early warning system and method, which are characterized in that collected heart rate information of a worker is processed by utilizing a warning value discrimination rule to obtain a first labor intensity discrimination result, the collected heart rate information of the worker is processed by utilizing the heart rate discrimination rule of the worker to obtain a second labor intensity discrimination result, and the first labor intensity discrimination result and the second labor intensity discrimination result are jointly processed by utilizing a labor degree evaluation rule to obtain labor fatigue early warning information. The invention can determine the current labor intensity and labor intensity of the laborer according to the dynamic labor heart rate and labor time, and the sustainable labor time for continuing to work under the labor intensity, and early warn fatigue occurrence, so that the laborer can master and properly adjust the labor intensity and the labor time in real time, and fatigue occurrence is avoided.
Description
Technical Field
The invention relates to the technical field of occupational health and labor physiology of occupational medicine, in particular to a physical labor fatigue early warning system and method.
Background
The labor fatigue is a main risk affecting the labor efficiency, endangering the labor safety and the health of workers and is an unavoidable reality frequently encountered in the manual labor process of the workers. How to prevent fatigue and early warn fatigue in advance is always an important aspect of long-term attention and research in the fields of occupational health and occupational medicine.
At present, the related technology of the universal fatigue early warning aiming at the whole labor process of common workers is still blank. The fatigue early warning technology reported at present is mostly aimed at fatigue of drivers and pilots, and the fatigue early warning is mainly based on real-time monitoring and judging of physiological signals, image signals and the like in the operation or movement process, and is a transverse early warning at a certain moment in the operation process, or is a transverse judgment early warning by calculating monitoring indexes through a mathematical model. The existing fatigue early warning technology does not consider the accumulated effect of fatigue occurrence, and the early warning process does not refer to the relevant professional health corresponding standard of the country, so that the scientificity, pertinence and practicability are not strong.
Disclosure of Invention
The invention aims to solve the technical problems that the existing fatigue early warning technology does not consider the accumulated effect of fatigue occurrence, and the early warning process does not refer to the relevant professional health corresponding standard of the country, so that the scientific pertinence and practicability are not strong.
In order to solve the technical problems, a first aspect of the embodiment of the invention discloses a physical labor fatigue early warning method, which comprises the following steps:
collecting heart rate information of a worker;
processing the heart rate information of the laborers by using a heart rate discrimination rule to obtain a labor intensity discrimination result;
and processing the labor intensity judging result by using a labor intensity evaluation rule to obtain labor fatigue early warning information.
In an optional implementation manner, in a first aspect of the embodiment of the present invention, the processing, using a heart rate discrimination rule, the heart rate information of the worker to obtain a labor intensity discrimination result includes:
processing the heart rate information of the laborers by utilizing a warning value discrimination rule to obtain a first labor intensity discrimination result;
and processing the heart rate information of the laborers by using a heart rate intensity discriminating rule of the laborers to obtain a second labor intensity discriminating result.
In a first aspect of the embodiment of the present invention, the processing the heart rate information of the worker using the alert value discrimination rule to obtain a first labor intensity discrimination result includes:
and carrying out smoothing treatment on the worker heart rate information to obtain a smoothed value of the worker heart rate information, and processing the smoothed value and the worker heart rate warning value by utilizing a smoothed value discrimination rule to obtain a first labor intensity discrimination result.
In an optional implementation manner, in the first aspect of the embodiment of the present invention, the smoothing processing the heart rate information of the worker to obtain a smoothed value includes:
and acquiring discrete sampling values of the heart rate information of the labors, forming a sampling vector by using the discrete sampling values, calculating a cross-correlation matrix of the sampling vector, processing the cross-correlation matrix by using a characteristic extraction method to obtain a characteristic value vector, and weighting the sampling vector by using the characteristic value vector to obtain a smooth value of the heart rate information of the labors.
In a first aspect of the present embodiment, the processing the smoothed value and the alarm value of the heart rate of the worker by using the smoothed value discrimination rule to obtain a first labor intensity discrimination result includes:
firstly judging whether the smooth value is in a heart rate normal interval or not, if the smooth value is in the heart rate normal interval, judging whether the smooth value is smaller than a heart rate warning value or not, if the smooth value is smaller than the heart rate warning value, judging that a first labor intensity judgment result is safe and continuous in labor, and if the smooth value is not smaller than the heart rate warning value, judging that the first labor intensity judgment result is early warning and stopping the labor; if the smooth value is not in the heart rate normal interval, the first labor intensity judging result is early warning and stopping labor.
In an optional implementation manner, in a first aspect of the embodiment of the present invention, the processing, using a worker heart rate intensity discrimination rule, collected worker heart rate information to obtain a second labor intensity discrimination result includes: determining labor intensity level information according to the collected heart rate information of the laborers, determining the labor load quantity of the laborers in unit time according to the labor intensity level information and the labor time, processing the labor load quantity of the laborers in unit time to obtain residual labor time information, and obtaining a second labor intensity judging result according to the residual labor time information.
In an optional implementation manner, in the first aspect of the embodiment of the present invention, the obtaining the second labor intensity determination result according to the remaining labor time information includes that if the remaining labor time is less than or equal to 0, the second labor intensity determination result is tired and stops working, and if the remaining labor time is greater than 0, the second labor intensity determination result is safe and continues working.
In a first aspect of the embodiment of the present invention, the first labor intensity determination result and the second labor intensity determination result are jointly processed by using a labor intensity evaluation rule to obtain the labor fatigue early warning information, which includes determining that the labor fatigue early warning information is early warning and stopping labor if the first labor intensity determination result is early warning and stopping labor or the second labor intensity determination result is fatigue and stopping labor, and determining that the labor fatigue early warning information is safe and continuing labor if the first labor intensity determination result and the second labor intensity determination result are both safe and continuing labor.
The second aspect of the embodiment of the invention discloses a physical labor fatigue early warning system, which comprises:
the signal acquisition module is used for acquiring the labor heart rate information of the laborers in real time and sending the labor heart rate information to the first processing module and the second processing module;
the first processing module is used for processing the collected heart rate information of the laborers by utilizing the warning value discrimination rule to obtain a first labor intensity discrimination result;
the second processing module is used for processing the collected heart rate information of the laborers by utilizing the heart rate intensity distinguishing rule of the laborers to obtain a second labor intensity distinguishing result;
the evaluation module is used for carrying out joint processing on the first labor intensity judging result and the second labor intensity judging result by utilizing a labor intensity evaluating rule to obtain labor fatigue early warning information and sending the labor fatigue early warning information to the display module;
and the display module is used for displaying the labor fatigue early warning information.
In a second aspect of the embodiment of the present invention, the physical fatigue early warning system further includes a voice prompt module, where the voice prompt module is used for receiving the fatigue early warning information of the evaluation module and playing the voice.
In a third aspect, the invention discloses another physical labor fatigue pre-warning system, the system comprising:
a memory storing executable program code;
a processor coupled to the memory;
the processor invokes the executable program codes stored in the memory to execute part or all of the steps in the method for early warning of physical labor fatigue disclosed in the first aspect of the embodiment of the invention.
The fourth aspect of the present invention discloses a computer storage medium, where the computer storage medium stores computer instructions, where the computer instructions are used to execute part or all of the steps in the method for early warning physical fatigue disclosed in the first aspect of the present invention when the computer instructions are called.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, the collected heart rate information of the laborers is processed by utilizing the warning value discrimination rule to obtain a first labor intensity discrimination result, the collected heart rate information of the laborers is processed by utilizing the labor intensity discrimination rule to obtain a second labor intensity discrimination result, the first labor intensity discrimination result and the second labor intensity discrimination result are jointly processed by utilizing the labor intensity evaluation rule to obtain the labor fatigue early warning information, the labor load of the laborers and the time for continuing the labor in the next step can be determined according to the dynamic labor heart rate and the labor time, and the labor fatigue is warned, so that the laborers can properly adjust the labor intensity and the labor time, the safe labor is realized, and the fatigue is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a method for early warning of physical labor fatigue, disclosed in an embodiment of the invention;
fig. 2 is a schematic structural diagram of a physical labor fatigue early warning system according to an embodiment of the present invention.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, apparatus, article, or device that comprises a list of steps or elements is not limited to the list of steps or elements but may, in the alternative, include other steps or elements not expressly listed or inherent to such process, method, article, or device.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The occurrence of physical labor fatigue is closely related to energy consumption, and fatigue can occur due to the fact that the energy consumption in the labor process exceeds a physiological limit value along with the extension of labor time. The energy consumption in the labor process is determined by the labor intensity and the labor time, the labor intensity is divided into five levels of light, medium, heavy and extremely heavy (refer to the national military standard: military physical labor intensity class GJB 1336-92), and the higher the labor intensity level is, the higher the energy consumption is; similarly, the longer the labor time, the higher the energy consumption under the same labor intensity. The sum of the products of different labor intensity (expressed in terms of energy consumption rate, kJ/min) and corresponding labor time in one day is called the labor load, and the energy consumption of one day labor can be obtained by calculating the labor load. National occupational health standards "worksite all deleterious factor occupational contact limits part 2: physical factors (GBZ 2.2-2007) "provide that the maximum heart rate should not exceed 150 beats/min when any single physical effort is engaged in during the working day; the energy consumption of the one-day (8 hours) work should not exceed 6276kJ (referred to herein as the physiological limit of the total work energy consumption of the one-day), beyond which limit the energy consumption of the one-day work exceeds, i.e. there is a risk of fatigue. The labor intensity can be determined by measuring the labor heart rate (which can be converted into the energy consumption rate, and refers to the military physical labor intensity classification GJB 1336-92), so that the labor fatigue can be warned and prevented by monitoring the labor heart rate and the labor time in real time, accumulating the labor load amount completed in one day, judging whether the actual labor load amount exceeds the total labor energy consumption physiological limit value in one day, and judging whether the labor heart rate exceeds the warning value.
The invention discloses a method and a device for early warning of physical labor fatigue, comprising the following steps: and processing the collected heart rate information of the laborers by using a warning value discrimination rule to obtain a first labor intensity discrimination result, processing the collected heart rate information of the laborers by using a laborers heart rate discrimination rule to obtain a second labor intensity discrimination result, and jointly processing the first labor intensity discrimination result and the second labor intensity discrimination result by using a labor degree evaluation rule to obtain labor fatigue early warning information.
The following will describe in detail.
Example 1
Referring to fig. 1, fig. 1 is a schematic flow chart of a method for early warning of physical fatigue according to the present embodiment. As shown in fig. 1, the method for early warning of physical labor fatigue may include the following operations:
101. processing the collected heart rate information of the laborers by utilizing the warning value discrimination rule to obtain a first labor intensity discrimination result;
102. processing the collected heart rate information of the laborers by using a heart rate intensity discriminating rule of the laborers to obtain a second labor intensity discriminating result;
103. and carrying out joint processing on the first labor intensity judging result and the second labor intensity judging result by using a labor intensity evaluating rule to obtain labor fatigue early warning information.
In this optional embodiment, as another optional implementation manner, the processing the collected heart rate information of the laborer by using the alert value discrimination rule to obtain a first labor intensity discrimination result includes: judging whether the collected heart rate information of the laborers exceeds a heart rate warning value, and generating a first labor intensity judging result according to the judging result.
In this optional embodiment, as another optional implementation manner, the determining whether the collected heart rate information of the worker exceeds the heart rate warning value includes forming a sampling vector from discrete sampled values of the heart rate of the worker collected in a period of time, calculating a cross-correlation matrix of the sampling vector, processing the cross-correlation matrix by using a feature extraction method, weighting the sampling vector by using the feature value vector to obtain a smoothed value of the heart rate information of the worker, and comparing the smoothed value of the heart rate information of the worker with the heart rate warning value. Through smoothing the collected heart rate value of the laborer, the false alarm and the false sampling phenomenon caused by heart rate fluctuation after continuous labor of the laborer, especially in a fatigue state, can be effectively reduced, the accuracy of heart rate early warning is improved, and the instantaneity and the accuracy of fatigue early warning are further improved.
Alternatively, the feature extraction method may be a subspace method.
Optionally, the step of judging whether the collected heart rate information of the laborers exceeds the heart rate warning value comprises the step of representing a sampling vector formed by discrete sampling values of the heart rate of the laborers collected in a period of time as [ x ] 1 ,x 2 ,…,x N ]N is the number of the discrete sampling values of the heart rate of the laborer acquired in a period of time, a mutual matrix C of the sampling vectors is obtained through calculation, and characteristic value decomposition is carried out on the mutual matrix C to obtain:
C＝VDV H ，
and C is a characteristic vector matrix, D is a characteristic value matrix, diagonal elements of the matrix D are normalized and used as weight vectors, the sampling vectors are weighted and summed to obtain a smoothed value of the heart rate information of the laborers, and the smoothed value of the heart rate information of the laborers is compared with the heart rate early warning value.
Optionally, the eigenvalue decomposition is performed on the cross-correlation matrix C by adopting a subspace method, and the eigenvalue decomposition can be realized by adopting a rapid subspace decomposition algorithm or a Rayleigh-Rits approximation algorithm.
In this optional embodiment, as another optional implementation manner, the generating a first labor intensity judging result according to the judging result includes that if the judging result is that the collected heart rate information of the laborers exceeds the heart rate warning value, the first labor intensity judging result is early warning and stopping labor, and if the judging result is that the collected heart rate information of the laborers does not exceed the heart rate warning value, the first labor intensity judging result is safe and continues to labor.
In this optional embodiment, as another optional implementation manner, the processing the collected information of the heart rate of the worker by using a rule for discriminating the heart rate of the worker to obtain a second result for discriminating the heart rate of the worker includes: determining labor intensity level information according to the collected heart rate information of the laborers, determining the labor load quantity of the laborers in unit time according to the labor intensity level information and the labor time, processing the labor load quantity of the laborers in unit time to obtain residual labor time information, and obtaining a second labor intensity judging result according to the residual labor time information.
In this optional embodiment, as another optional implementation manner, the processing the collected information of the heart rate of the worker by using a rule for discriminating the heart rate of the worker to obtain a second result for discriminating the heart rate of the worker includes:
the labor load Z of the laborer in unit time is determined, and the calculation formula is as follows:
wherein P is n A labor intensity value representing the nth labor, which converts the collected worker heart rate into an energy consumption rate to determine, t n Representing the labor time of the nth labor intensity, wherein N represents the labor times of different labor intensity, and n=1, 2 … … and N; the labor degree M of unit time is determined, and the formula is as follows:
M＝Z÷S×100％，
where S represents the physiological limit of the overall work energy expenditure per unit time.
Optionally, the labor load of the workers in unit time is processed to obtain the residual labor time information, and the calculation formula is as follows:
D＝[(S-Z)÷n']-t'
wherein D is the remaining labor time, n 'is the current labor intensity value, and t' is the labor time completed by the worker under the current labor intensity. n' is obtained by calculating or measuring the average labor intensity value of the laborers per unit time.
The labor intensity value is determined by the collected heart rate of the laborer, and the labor intensity levels are sequentially classified into mild, moderate, severe and severe according to the collected heart rate value range of the laborer.
In this optional embodiment, as another optional implementation manner, the obtaining the second labor intensity judging result according to the residual labor time information includes that if the residual labor time is less than or equal to 0, the second labor intensity judging result is tired and stops working, and if the residual labor time is greater than 0, the second labor intensity judging result is safe and continues working.
In this optional embodiment, as another optional implementation manner, the labor fatigue early warning information includes first labor fatigue early warning information and second labor fatigue early warning information, where the first labor fatigue early warning information is used for warning and reminding the heart rate of the worker, and the second labor fatigue early warning information is used for reminding the labor degree of the worker in unit time.
In this alternative embodiment, as another alternative implementation manner, the first labor intensity judging result and the second labor intensity judging result are jointly processed by using the labor intensity evaluating rule to obtain the labor fatigue early warning information, which includes determining the labor fatigue early warning information as early warning and stopping labor if the first labor intensity judging result is early warning and stopping labor or the second labor intensity judging result is fatigue and stopping labor, and determining the labor fatigue early warning information as early warning and stopping labor if the first labor intensity judging result and the second labor intensity judging result are both safe and continuing labor, and determining the labor fatigue early warning information as safe and continuing labor.
It can be seen that in this embodiment, the alert value discrimination rule is utilized to process the collected heart rate information of the worker to obtain a first labor intensity discrimination result, the worker heart rate discrimination rule is utilized to process the collected heart rate information of the worker to obtain a second labor intensity discrimination result, and the labor intensity assessment rule is utilized to jointly process the first labor intensity discrimination result and the second labor intensity discrimination result to obtain the labor fatigue early warning information, so that the labor load of the worker and the time for continuing the labor in the next step can be determined according to the dynamic labor heart rate and the labor time, and the labor fatigue can be warned, so that the worker can properly adjust the labor intensity and the labor time, realize safe labor, and avoid fatigue.
Example two
Referring to fig. 2, fig. 2 is a schematic structural diagram of a physical labor fatigue early warning system according to an embodiment of the invention. As shown in fig. 2, this embodiment discloses a physical labor fatigue early warning system, including:
the signal acquisition module 201 is used for acquiring the labor heart rate information of the laborers in real time and sending the information to the first processing module and the second processing module;
the first processing module 202 is configured to process the collected heart rate information of the worker by using the alert value discrimination rule, so as to obtain a first labor intensity discrimination result;
the second processing module 203 is configured to process the collected heart rate information of the worker by using a judgment rule of heart rate intensity of the worker, so as to obtain a second judgment result of labor intensity;
the evaluation module 204 is configured to perform joint processing on the first labor intensity determination result and the second labor intensity determination result by using a labor intensity evaluation rule, obtain labor fatigue early warning information, and send the labor fatigue early warning information to the display module;
and the display module 205 is used for displaying the labor fatigue early warning information.
In this optional embodiment, as another optional implementation manner, the physical labor fatigue early warning system further includes a voice prompt module, where the voice prompt module is used for receiving the labor fatigue early warning information of the evaluation module and playing the voice.
In this optional embodiment, as another optional implementation manner, the first processing module 202 is configured to determine whether the collected heart rate information of the worker exceeds the heart rate alert value, and generate a first labor intensity determination result according to the determination result.
In this alternative embodiment, as another alternative implementation manner, the first processing module 202 forms a sampling vector for the discrete sampled value of the heart rate of the worker acquired in a period of time, calculates a cross-correlation matrix of the sampling vector, obtains a characteristic value vector of the cross-correlation matrix by using a subspace method, weights the sampling vector by using the characteristic value vector to obtain a smoothed value of the heart rate information of the worker, and compares the smoothed value of the heart rate information of the worker with a heart rate early warning value.
In this alternative embodiment, as another alternative implementation manner, the first processing module 202 determines whether the collected heart rate information of the laborer exceeds the heart rate warning value, if the determination result is that the collected heart rate information of the laborer exceeds the heart rate warning value, the first labor intensity determination result is early warning and stopping the labor, and if the determination result is that the collected heart rate information of the laborer does not exceed the heart rate warning value, the first labor intensity determination result is safe and continues to work.
In this alternative embodiment, as another alternative implementation manner, the second processing module determines labor intensity level information according to the collected heart rate information of the laborers, determines labor load amount of the laborers in unit time according to the labor intensity level information and the labor time, processes the labor load amount of the laborers in unit time to obtain residual labor time information, and obtains a second labor intensity judging result according to the residual labor time information.
In this optional embodiment, as another optional implementation manner, the second processing module obtains a second labor intensity judging result according to the residual labor time information, where the second labor intensity judging result is tired and stops working if the residual labor time is less than or equal to 0, and the second labor intensity judging result is safe and continues working if the residual labor time is greater than 0.
In this optional embodiment, as another optional implementation manner, the evaluation module performs joint processing on the first labor intensity discrimination result and the second labor intensity discrimination result by using a labor intensity evaluation rule to obtain the labor fatigue early warning information, where the labor fatigue early warning information is determined to be early warning and stopping labor if the first labor intensity discrimination result is early warning and stopping labor or the second labor intensity discrimination result is fatigue and stopping labor, and the labor fatigue early warning information is determined to be early warning and stopping labor if the first labor intensity discrimination result and the second labor intensity discrimination result are both safe and continuing labor, and the labor fatigue early warning information is determined to be safe and continuing labor.
It can be seen that in this embodiment, the alert value discrimination rule is utilized to process the collected heart rate information of the worker to obtain a first labor intensity discrimination result, the worker heart rate discrimination rule is utilized to process the collected heart rate information of the worker to obtain a second labor intensity discrimination result, and the labor intensity assessment rule is utilized to jointly process the first labor intensity discrimination result and the second labor intensity discrimination result to obtain the labor fatigue early warning information, so that the labor load of the worker and the time for continuing the labor in the next step can be determined according to the dynamic labor heart rate and the labor time, and the labor fatigue can be warned, so that the worker can properly adjust the labor intensity and the labor time, realize safe labor, and avoid fatigue.
Example III
In a third aspect, the invention discloses another physical labor fatigue pre-warning system, the system comprising:
a memory storing executable program code;
a processor coupled to the memory;
the processor invokes the executable program codes stored in the memory to execute part or all of the steps in the physical labor fatigue early warning method disclosed in the first embodiment of the invention.
It can be seen that in this embodiment, the alert value discrimination rule is utilized to process the collected heart rate information of the worker to obtain a first labor intensity discrimination result, the worker heart rate discrimination rule is utilized to process the collected heart rate information of the worker to obtain a second labor intensity discrimination result, and the labor intensity assessment rule is utilized to jointly process the first labor intensity discrimination result and the second labor intensity discrimination result to obtain the labor fatigue early warning information, so that the labor load of the worker and the time for continuing the labor in the next step can be determined according to the dynamic labor heart rate and the labor time, and the labor fatigue can be warned, so that the worker can properly adjust the labor intensity and the labor time, realize safe labor, and avoid fatigue.
Example IV
The fourth aspect of the present invention discloses a computer storage medium, where the computer storage medium stores computer instructions, where the computer instructions are used to execute part or all of the steps in the method for early warning of physical fatigue disclosed in the first embodiment of the present invention when the computer instructions are called.
It can be seen that in this embodiment, the alert value discrimination rule is utilized to process the collected heart rate information of the worker to obtain a first labor intensity discrimination result, the worker heart rate discrimination rule is utilized to process the collected heart rate information of the worker to obtain a second labor intensity discrimination result, and the labor intensity assessment rule is utilized to jointly process the first labor intensity discrimination result and the second labor intensity discrimination result to obtain the labor fatigue early warning information, so that the labor load of the worker and the time for continuing the labor in the next step can be determined according to the dynamic labor heart rate and the labor time, and the labor fatigue can be warned, so that the worker can properly adjust the labor intensity and the labor time, realize safe labor, and avoid fatigue.
Example five
A physical labor fatigue early warning system comprises
The signal acquisition module is used for acquiring the labor heart rate of the laborers in real time and sending the labor heart rate to the processing module;
the processing module is used for receiving the heart rate signal and the labor time signal sent by the signal acquisition module, judging whether the heart rate value exceeds the warning value, and sending a signal to the display module to display early warning information; the processing module is used for sending the heart rate value which does not exceed the warning value and the labor time to the analysis module;
the analysis module is used for determining labor intensity levels according to the received labor heart rate and sending the labor intensity levels to the display module, wherein the labor intensity levels are sequentially divided into light, moderate, severe, very severe and very severe from low to high; the device is used for determining the labor load amount of the workers in one day according to the labor intensity and the labor time, determining the accumulated labor time of the workers with the labor intensity level being more than light (including light) in one day, and sending the labor load amount of the workers in one day and the accumulated labor time with the labor intensity level being more than light (including light) in one day to a display module; the labor intensity in one day is determined and obtained according to the labor load amount completed in one day; the device comprises a display module, a physiological limiting value, a current labor intensity and a time display module, wherein the physiological limiting value is used for determining the residual labor time (hours, minutes) according to the total labor energy consumption of one day, the labor degree actually completed in one day and the labor time completed in the current labor intensity, and the labor degree and the residual labor time are sent to the display module;
the evaluation module is used for judging whether the intensity level and the labor time of continuous labor of the worker are given according to the accumulated labor load amount in one day and the early warning information, and sending the intensity level and the labor time of continuous labor to the display module;
the display module is used for displaying the completed labor intensity level and the labor time of each labor intensity level; for displaying the accumulated labor time of the completed labor and the labor intensity level is above the light level (including the light level); for displaying said degree of labor during a day; for displaying said remaining working time (hours.minutes); and the early warning information is used for displaying the early warning information.
The physical labor fatigue early warning system comprises an early warning which is displayed when the labor heart rate value judged by the processing module exceeds the labor heart rate warning value, the labor is stopped, the labor can be continued slightly, and the safety which is displayed when the heart rate value judged by the processing module does not exceed the labor heart rate warning value, the labor is continued. And displaying early warning when the labor load of the analysis module is equal to or greater than the physiological limit value of the total labor energy consumption in one day, completing labor and continuing to be tired.
The method for determining the labor load amount completed in one day by the physical labor fatigue early warning system comprises the following steps:
wherein i is n A labor intensity value representing the nth labor, which converts the collected worker heart rate into an energy consumption rate to determine, t n Representing the labor time of the nth labor intensity, Z represents the amount of labor load completed in one day, N represents the number of (different labor intensity) labor, n=1, 2 … …, N.
The method for determining the labor degree in one day by the physical labor fatigue early warning system comprises the following steps:
M＝Z÷S×100％
wherein Z represents the amount of labor load completed in one day, M represents the degree of labor, and S represents the physiological limit of the overall labor energy consumption.
The method for determining the residual labor time in one day by the physical labor fatigue early warning system comprises the following steps:
wherein D is the residual labor time, I n T is the labor intensity already completed n For the labor time of the completed labor intensity, S is the physiological limit value of the total labor energy consumption in one day, n 'is the current labor intensity, and t' is the labor time of the completed labor intensity.
The specific method for determining the residual labor time for continuing to work under the current labor intensity by the physical labor fatigue early warning system is as follows:
step S100: accumulating the completed labor load of the laborers;
step S102: if the labor load is equal to or exceeds the physiological limit value of the total labor energy consumption of one day, or the early warning information displayed by the display module is early warning, the labor is stopped, and if the labor is stopped and the work can be continued, the labor is ended or stopped;
step S104: if the labor load does not exceed the physiological limit value of the total labor energy consumption in one day, and the early warning information displayed by the display module is safe, and the labor is continued, the next step is carried out;
step S106: and calculating and determining the residual labor time under the current labor intensity according to the following formula.
Wherein D is the residual labor time, I n T is the labor intensity already completed n For the labor time of the completed labor intensity, n 'is the current labor intensity, t' is the labor time of the completed labor intensity, and S is the total labor energy consumption physiological limit value of one day.
The physical labor fatigue early warning system accumulates the labor load amount completed in one day in real time during the labor, judges whether the actual completed labor load amount is equal to or exceeds the total labor energy consumption physiological limit value of one day, or judges whether the early warning information displayed by the display module is early warning, and stops the labor, if yes, stops the labor; if the actual labor load does not exceed the physiological limit value of the total labor energy consumption of one day and the early warning information displayed by the display module is safe and the labor is continued, executing step S106, and calculating and determining the residual labor time under the current labor intensity in real time. And accumulating the labor load amount completed in one day, judging whether the actual completed labor load amount is equal to or exceeds the total work energy consumption physiological limit value of one day, or stopping the labor if the early warning information displayed by the display module is early warning and stopping the labor if the labor is slightly continued.
The physical labor fatigue early warning system further comprises a voice prompt module connected with the display module, wherein the voice prompt module is used for playing early warning information displayed by the display module and/or the labor intensity level and the residual labor time of the current labor so as to remind a worker.
The apparatus embodiments described above are merely illustrative, in which the modules illustrated as separate components may or may not be physically separate, and the components shown as modules may or may not be physical, i.e., may be located in one place, or may be distributed over multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above detailed description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course by means of hardware. Based on such understanding, the foregoing technical solutions may be embodied essentially or in part in the form of a software product that may be stored in a computer-readable storage medium including Read-Only Memory (ROM), random access Memory (RandomAccess Memory, RAM), programmable Read-Only Memory (Programmable Read-Only Memory, PROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), one-time programmable Read-Only Memory (OTPROM), electrically erasable programmable Read-Only Memory (EEPROM), compact disc Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM) or other optical disc Memory, magnetic disc Memory, tape Memory, or any other medium that can be used for carrying or storing data that is readable by a computer.
Finally, it should be noted that: the embodiment of the invention discloses a physical labor fatigue early warning method and device, which are disclosed by the embodiment of the invention and are only used for illustrating the technical scheme of the invention, but not limiting the technical scheme; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme recorded in the various embodiments can be modified or part of technical features in the technical scheme can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (5)
1. The method for early warning of the physical labor fatigue is characterized by comprising the following steps:
collecting heart rate information of a worker;
processing the heart rate information of the laborers by using a heart rate discrimination rule to obtain a labor intensity discrimination result;
processing the labor intensity judging result by using a labor intensity evaluation rule to obtain labor fatigue early warning information;
the processing of the worker heart rate information by using the heart rate discrimination rule to obtain a labor intensity discrimination result comprises the following steps:
processing the heart rate information of the laborers by utilizing a warning value discrimination rule to obtain a first labor intensity discrimination result;
processing the heart rate information of the laborers by using a heart rate intensity discriminating rule of the laborers to obtain a second labor intensity discriminating result;
the step of processing the heart rate information of the laborers by utilizing the warning value discrimination rules to obtain a first labor intensity discrimination result comprises the following steps:
smoothing the worker heart rate information to obtain a smoothed value of the worker heart rate information, and processing the smoothed value and the worker heart rate warning value by using a smoothed value discrimination rule to obtain a first labor intensity discrimination result;
the step of performing smoothing processing on the heart rate information of the laborers to obtain a smoothed value of the heart rate information of the laborers comprises the following steps:
collecting discrete sampling values of the heart rate information of the labors, forming sampling vectors by using the discrete sampling values, calculating a cross-correlation matrix of the sampling vectors, processing the cross-correlation matrix by using a characteristic extraction method to obtain characteristic value vectors, and weighting the sampling vectors by using the characteristic value vectors to obtain smooth values of the heart rate information of the labors;
the method for judging the labor intensity by using the warning value comprises the steps of processing collected heart rate information of the laborers by using a warning value judging rule to obtain a first labor intensity judging result, and further comprises the following steps: judging whether the collected heart rate information of the laborers exceeds a heart rate warning value, and generating a first labor intensity judging result according to the judging result;
the method for judging whether the collected heart rate information of the laborers exceeds the heart rate warning value comprises the following steps that a sampling vector formed by scattered sampling values of the heart rate of the laborers collected in a period of time is expressed as [ x ] 1 ,x 2 ,…,x N ]N is the number of the discrete sampling values of the heart rate of the laborer acquired in a period of time, a mutual matrix C of the sampling vectors is obtained through calculation, and characteristic value decomposition is carried out on the mutual matrix C to obtain:
C＝VDV H ，
wherein, C is a characteristic vector matrix, D is a characteristic value matrix, the diagonal line elements of the matrix D are normalized and used as weight vectors, the sampling vectors are weighted and summed to obtain a smoothed value of the heart rate information of the laborer, and the smoothed value of the heart rate information of the laborer is compared with the heart rate early warning value;
the method for processing the collected heart rate information of the laborers by utilizing the heart rate intensity discriminating rule of the laborers to obtain a second labor intensity discriminating result comprises the following steps: determining labor intensity level information according to the collected heart rate information of the laborers, determining the labor load quantity of the laborers in unit time according to the labor intensity level information and the labor time, processing the labor load quantity of the laborers in unit time to obtain residual labor time information, and obtaining a second labor intensity judging result according to the residual labor time information.
2. The method for early warning physical labor fatigue according to claim 1, wherein the step of processing the smoothed value and the worker heart rate warning value by using a smoothed value discrimination rule to obtain a first labor intensity discrimination result comprises:
firstly judging whether the smooth value is in a heart rate normal interval or not, if the smooth value is in the heart rate normal interval, judging whether the smooth value is smaller than a heart rate warning value or not, if the smooth value is smaller than the heart rate warning value, judging that a first labor intensity judgment result is safe and continuous in labor, and if the smooth value is not smaller than the heart rate warning value, judging that the first labor intensity judgment result is early warning and stopping the labor; if the smooth value is not in the heart rate normal interval, the first labor intensity judging result is early warning and stopping labor.
3. The method for early warning physical labor fatigue according to claim 1, wherein the step of processing the labor intensity discrimination result by using the labor intensity evaluation rule to obtain the labor fatigue early warning information includes determining the labor fatigue early warning information as early warning and stopping labor if the first labor intensity discrimination result is early warning and stopping labor or the second labor intensity discrimination result is tired and stopping labor, and determining the labor fatigue early warning information as safe and continuing labor if both the first labor intensity discrimination result and the second labor intensity discrimination result are safe and continuing labor.
4. The method for early warning physical labor fatigue according to claim 1, wherein the step of obtaining the second labor intensity discrimination result based on the remaining labor time information includes, if the remaining labor time is less than or equal to 0, the second labor intensity discrimination result is tired and the labor is stopped, and if the remaining labor time is greater than 0, the second labor intensity discrimination result is safe and the labor is continued.
5. A physical labor fatigue warning system, the system comprising:
a memory storing executable program code;
a processor coupled to the memory;
the processor invokes the executable program code stored in the memory to perform all the steps of the method for early warning of physical labor fatigue disclosed in any one of claims 1 to 4.
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