CN111812414A - Early warning method and system for power frequency electromagnetic field contact of electric power worker - Google Patents
Early warning method and system for power frequency electromagnetic field contact of electric power worker Download PDFInfo
- Publication number
- CN111812414A CN111812414A CN202010704152.5A CN202010704152A CN111812414A CN 111812414 A CN111812414 A CN 111812414A CN 202010704152 A CN202010704152 A CN 202010704152A CN 111812414 A CN111812414 A CN 111812414A
- Authority
- CN
- China
- Prior art keywords
- frequency electromagnetic
- power frequency
- time
- power
- electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0871—Complete apparatus or systems; circuits, e.g. receivers or amplifiers
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The embodiment of the invention relates to an early warning method and system for power frequency electromagnetic field contact of power workers.A power frequency electromagnetic field detection device is worn on the body of the power worker, so that electric field data and magnetic field data of the power frequency electromagnetic field contact of the power worker can be directly detected, the accuracy of the detected electric field data and magnetic field data is high, the short-time electric field value, the short-time magnetic field value and the long-time electric field value are respectively compared with a short-time electric field contact limit value, a short-time magnetic field contact limit value and 5000V/m one by one, whether the short-time electric field contact limit value, the short-time magnetic field contact limit value and 5000V/m are exceeded or not is judged, and if the short-time electric field contact limit value, the short-time magnetic field contact limit; the technical problem of current measurement personnel contact power frequency electromagnetic field size numerical value inaccurate, can't accurately differentiate personnel's operation health, gradually influences personnel's personal safety is solved.
Description
Technical Field
The invention relates to the technical field of electric power personnel safety, in particular to an early warning method and system for electric power workers to contact a power frequency electromagnetic field.
Background
Power frequency electromagnetic fields (EMF) are lines of "force" that are invisible to the naked eye around any electrical device, and are generated by power transmission lines, electrical wires, and electrical devices.
The personnel that work in the electric power system trade mostly work around power equipment, and power equipment can produce the power frequency electromagnetic field, and the power frequency electromagnetic field is harmful to personnel's health, in order to guarantee that personnel's health can not be harmd by the power frequency electromagnetic field, need carry out the contact power frequency electromagnetic field to the staff of electric power trade and detect, obtain the power frequency electromagnetic field data that the staff contacted, according to present occupational health standard "workplace harmful factor occupational contact limit 2 part: physical factors (GBZ 2.2.2-2007) stipulate that the occupational contact limit value of a power frequency electric field in a work place of 8h is 5kV/m, and the working frequency electromagnetic field data contacted by a worker is judged, whether the worker is in safe operation or not is judged, and the condition that the physical health of the worker is damaged when the power frequency electromagnetic field contacted by the worker exceeds the contact limit value is avoided.
The detection method and the equipment for the contact of the personnel with the power frequency electromagnetic field in the current market are used for testing a certain measuring point of a workplace of the personnel in a short time, such as: and continuously measuring for 3 times at each measuring point, wherein the measuring time is not less than 15s, and reading the maximum value of the stable state as the measured value of the power frequency electromagnetic field at the point. If the measurement reading has large fluctuation, the measurement time is properly prolonged, and the average of the three values is taken as the measured value of the power frequency electromagnetic field at the point. The detection method does not reflect the actual power frequency electric field size actually contacted by an operator, nor the power frequency electric field size accumulated by the operator for a long time, and the detected power frequency electric field size of the operator contacted with the power frequency electric field is inaccurate, and cannot be directly compared and evaluated with a limit standard (the professional contact limit of the power frequency electric field in an 8h workplace is 5 kV/m).
Disclosure of Invention
The embodiment of the invention provides an early warning method and system for power frequency electromagnetic field contact of electric power workers, which are used for solving the technical problems that the numerical value of the power frequency electromagnetic field contact of the existing detection personnel is not accurate, the operation health of the personnel cannot be accurately identified, and the personal safety of the personnel is gradually influenced.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
an early warning method for electric power workers to contact a power frequency electromagnetic field comprises the following steps:
the power frequency electromagnetic field detection device is worn on an electric power worker, and electric field data and magnetic field data of the electric power worker contacting a power frequency electromagnetic field are obtained;
processing the electric field data and the magnetic field data to obtain a short-time electric field value, a short-time magnetic field value and a long-time electric field value;
if the short-time electric field value is larger than the short-time electric field contact limit value, or the short-time magnetic field data is larger than the short-time magnetic field contact limit value, or the long-time electric field value is larger than 5000V/m, an alarm is given;
and the long-term electric field value is a time weighted average value of electric field data of the power frequency electromagnetic field contacted by the power worker in the working time.
Preferably, the early warning method for the electric power worker to contact the power frequency electromagnetic field further comprises the following steps: expression for time weighted average:
in the formula, E is the time weighted average value of the power frequency electromagnetic field contacted by the power worker in the activity time, T is the standard working time of the power worker in one day, TiFor the time of contact of the power frequency electromagnetic field by the power operator in region i, EiThe electric field intensity of the power frequency electromagnetic field is contacted by the electric power worker in the region i, n is the number n of regions where the electric power worker works, and i is 1-n.
Preferably, the early warning method for the electric power worker to contact the power frequency electromagnetic field further comprises the following steps: acquiring electric field data of a power frequency electromagnetic field contacted by a power frequency worker from the power frequency electromagnetic field detection device at intervals of t; the time t is less than or equal to 3 s.
Preferably, the early warning method for the electric power worker to contact the power frequency electromagnetic field further comprises the following steps: and (4) calculating the long-term electric field value after acquiring the power detection staff contact the power frequency electromagnetic field for 15 min.
Preferably, the early warning method for the electric power worker to contact the power frequency electromagnetic field further comprises the following steps: the power frequency electromagnetic field detection device with the electric field induction probe and the electromagnetic induction probe is used for detecting electric field data and magnetic field data of power frequency electromagnetic fields contacted by power workers.
Preferably, the early warning method for the electric power worker to contact the power frequency electromagnetic field further comprises the following steps: and processing the electric field data and the magnetic field data by adopting a charge amplifier and low-pass filtering.
The invention also provides an early warning system for the power frequency electromagnetic field contacted by the power worker, which is arranged on a processor of the power frequency electromagnetic field detection device, and comprises a data acquisition unit, a data processing unit and a judgment early warning unit;
the data acquisition unit is used for wearing the power frequency electromagnetic field detection device on an electric power worker and acquiring electric field data and magnetic field data of the electric power worker contacting the power frequency electromagnetic field;
the data processing unit is used for processing the electric field data and the magnetic field data to obtain a short-time electric field numerical value, a short-time magnetic field numerical value and a long-time electric field numerical value;
the judging and early warning unit is used for giving an alarm according to the fact that the short-time electric field value is larger than a short-time electric field contact limit value, or the short-time magnetic field data is larger than a short-time magnetic field contact limit value, or the long-time electric field value is larger than 5000V/m;
and the long-term electric field value is a time weighted average value of electric field data of the power frequency electromagnetic field contacted by the power worker in the working time.
The invention also provides a computer-readable storage medium for storing computer instructions, which when run on a computer, cause the computer to execute the above-mentioned early warning method for the electric power staff contacting the power frequency electromagnetic field.
The invention also provides a computer program which is characterized by comprising a program code for executing the early warning method for the electric power worker to contact the power frequency electromagnetic field when the computer program runs on a computer.
The invention also provides terminal equipment, which comprises a processor and a memory;
the memory is used for storing program codes and transmitting the program codes to the processor;
and the processor is used for executing the early warning method for the power frequency electromagnetic field contact of the electric power working personnel according to the instruction in the program code.
According to the technical scheme, the embodiment of the invention has the following advantages:
1. according to the early warning method for the power frequency electromagnetic field contact of the power workers, the power frequency electromagnetic field detection device is worn on the body of the power workers, so that the electric field data and the magnetic field data of the power frequency electromagnetic field contact of the power workers can be directly detected, the accuracy of the detected electric field data and magnetic field data is high, the short-time electric field value, the short-time magnetic field value and the long-time electric field value are respectively compared with the short-time electric field contact limit value, the short-time magnetic field contact limit value and 5000V/m one by one, whether the short-time electric field value, the short-time magnetic field value and the long-time electric field value exceed the short-time electric field contact limit value, the short-time magnetic field contact limit value and 5000; the technical problem of current measurement personnel contact power frequency electromagnetic field size numerical value inaccurate, can't accurately differentiate personnel's operation health, gradually influences personnel's personal safety is solved.
2. The early warning system for the power frequency electromagnetic field contact of the power workers wears the power frequency electromagnetic field detection device on the body of the power workers through the data acquisition unit, can directly detect electric field data and magnetic field data of the power workers contacting the power frequency electromagnetic field, enables the accuracy of the detected electric field data and magnetic field data to be high, and judges whether the short-time electric field value, the short-time magnetic field value and the long-time electric field value obtained by the data processing unit respectively compare with the short-time electric field contact limit value, the short-time magnetic field contact limit value and 5000V/m one by one, and sends an alarm to inform the power workers if the short-time electric field value, the short-time magnetic field contact limit value and 5000V/m are exceeded, so that the power workers can work safely; the technical problem of current measurement personnel contact power frequency electromagnetic field size numerical value inaccurate, can't accurately differentiate personnel's operation health, gradually influences personnel's personal safety is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a flowchart illustrating steps of a method for warning that an electric power worker contacts a power frequency electromagnetic field according to an embodiment of the present invention.
Fig. 2 is a block diagram of an early warning system for power frequency electromagnetic field contact of an electric worker according to an embodiment of the present invention.
Fig. 3 is a frame diagram of a power frequency electromagnetic field detection device of an early warning system for power frequency electromagnetic field contact of power workers according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The main influences of the power frequency electromagnetic field on the human body include thermal effect, non-thermal effect, cumulative effect and the like, the power frequency electromagnetic field belongs to a range of extremely low frequency, and the energy level of the power frequency electromagnetic field is very low. According to occupational health standards established by China according to the biological effect of the power frequency electric field, the possibility of the acute effect and the long-term health effect of the power frequency electromagnetic field is considered, the hazard factor contact limit value is divided according to the national standard, and the condition that when electric workers in the working environment of the power system contact the power frequency electric field, the electric workers are kept below the limit value is stipulated, so that the health of the workers is ensured.
The embodiment of the application provides an early warning method and system for electric power workers to contact a power frequency electromagnetic field, and the method and system are used for solving the technical problems that the numerical value of the size of the existing detection personnel contacting the power frequency electromagnetic field is inaccurate, the operation health of the personnel cannot be accurately distinguished, and the personal safety of the personnel is gradually influenced.
The first embodiment is as follows:
fig. 1 is a flowchart illustrating steps of a method for warning that an electric power worker contacts a power frequency electromagnetic field according to an embodiment of the present invention.
As shown in fig. 1, an embodiment of the present invention provides an early warning method for an electric power worker contacting a power frequency electromagnetic field, including the following steps:
s1, wearing a power frequency electromagnetic field detection device on an electric power worker to obtain electric field data and magnetic field data of the electric power worker contacting a power frequency electromagnetic field;
s2, processing the electric field data and the magnetic field data to obtain a short-time electric field numerical value, a short-time magnetic field numerical value and a long-time electric field numerical value;
s3, if the short-time electric field value is larger than the short-time electric field contact limit value, or the short-time magnetic field data is larger than the short-time magnetic field contact limit value, or the long-time electric field value is larger than 5000V/m, an alarm is given;
and the long-term electric field value is a time weighted average value of electric field data of the power frequency electromagnetic field contacted by the power worker in the working time.
In the embodiment of the invention, the power frequency electromagnetic field detection device is worn on the body of the power worker, so that the numerical values of the electric field strength and the magnetic field strength of the power frequency electromagnetic field contacted by the power worker can be directly detected, and the accuracy of the numerical values of the electric field strength and the magnetic field strength obtained by detection is high.
In the present embodiment, the electric field data is represented by electric field intensity data, and the magnetic field data is represented by magnetic field intensity data.
In the embodiment of the invention, the short-time electric field value and the short-time magnetic field value are electric field strength values and magnetic field strength values obtained by the power frequency electromagnetic field detection device at one time on the body of a worker, the long-time electric field value is the accumulated power frequency electric field value of all electric field strength values obtained by the power frequency electromagnetic field detection device on the body of the worker within a period of time, and whether the short-time electric field contact limit value, the short-time magnetic field contact limit value and the 5000V/m are exceeded or not is judged according to the comparison of the short-time electric field value, the short-time magnetic field value and the long-time electric field value with the short-time electric field contact limit value, the short-time magnetic field contact limit value and the 5000V/m, if the short-time.
The invention provides an early warning method for the contact of power frequency electromagnetic field of electric power workers, which is characterized in that a power frequency electromagnetic field detection device is worn on the body of the electric power workers, so that the electric field data and the magnetic field data of the electric power workers in contact with the power frequency electromagnetic field can be directly detected, the accuracy of the detected electric field data and magnetic field data is high, and the short-time electric field value, the short-time magnetic field value and the long-time electric field value are respectively compared with a short-time electric field contact limit value, a short-time magnetic field contact limit value and 5000V/m one by one to judge whether the short-time electric field value, the short-time magnetic field contact limit value and the 5000V/m exceed the short-time electric field value, and if the short-time; the technical problem of current measurement personnel contact power frequency electromagnetic field size numerical value inaccurate, can't accurately differentiate personnel's operation health, gradually influences personnel's personal safety is solved.
It should be noted that, in the early warning method for the power frequency electromagnetic field contacted by the power worker in the embodiment of the present invention, the power frequency electromagnetic intensity and the electric field intensity contacted by the power worker for a short time and a long time are determined by the power frequency electromagnetic intensity and the electric field intensity contacted by the power worker for a long time, and the electromagnetic intensity and the electric field intensity contacted by the power worker are determined by dual criteria, so that the safe operation of the power worker is ensured, and the body safety of the power worker is gradually ensured.
In an embodiment of the present invention, the method for warning the power frequency electromagnetic field contact of the power worker further includes: expression for time weighted average:
in the formula, E is the time weighted average value of the power frequency electromagnetic field contacted by the power worker in the activity time, T is the standard working time of the power worker in one day, TiFor the time of contact of the power frequency electromagnetic field by the power operator in region i, EiThe electric field intensity of the power frequency electromagnetic field is contacted by the electric power worker in the region i, n is the number n of regions where the electric power worker works, and i is 1-n.
It should be noted that the expression of the time-weighted average value is mainly used for calculating a long-term electric field value, the long-term electric field value is also referred to as a power frequency electric field long-term accumulated value, the power frequency electric field long-term accumulated value refers to accumulated energy of a power frequency electric field which is contacted by a power worker for a long time in a working time, and the time-weighted average value of the power frequency electric field in the contact time is used for calculation. And the electric power working personnel activity routes are sectionally distinguished according to the areas i according to different power frequency electric field grades. Wherein the standard working time is 8 hours.
In an embodiment of the present invention, the method for warning the power frequency electromagnetic field contact of the power worker further includes: acquiring electric field data of a power frequency electromagnetic field contacted by a power frequency worker from a power frequency electromagnetic field detection device at intervals of t; the time t is less than or equal to 3 s.
In an embodiment of the present invention, the method for warning the power frequency electromagnetic field contact of the power worker further includes: and (4) obtaining a long-time electric field value which is calculated after the power detection staff contact the power frequency electromagnetic field for 15 min.
It should be noted that, the electric field data and the magnetic field data are respectively processed and analyzed, a test value of the electric field data is obtained from the power frequency electromagnetic field detection device at regular intervals t (the interval time t is not more than 3s), and after the power frequency electromagnetic field detection device starts the test for 15min, a long-term accumulation value of the power frequency electric field is calculated, that is, a long-term electric field value is calculated.
In an embodiment of the present invention, the method for warning the power frequency electromagnetic field contact of the power worker further includes: the power frequency electromagnetic field detection device with the electric field induction probe and the electromagnetic induction probe is used for detecting electric field data and magnetic field data of power frequency electromagnetic fields contacted by power workers.
In an embodiment of the present invention, the method for warning the power frequency electromagnetic field contact of the power worker further includes: and (3) processing the electric field data and the magnetic field data by adopting a charge amplifier and low-pass filtering.
It should be noted that the field intensity of the power worker contacting the power frequency electromagnetic field is measured indirectly mainly through the charges or currents on the two polar plates of the electric field induction probe and the electromagnetic induction probe, and the charge amplifier is used as a pre-amplification stage of the electric field signal. The charge amplifier is an operational amplifier with deep capacitance negative feedback and high open loop gain, can obtain voltage output proportional to input charge, utilizes the amplifier with high gain and a capacitor with good insulation performance to realize integrated operational amplification in the charge amplifier by adopting capacitance negative feedback, and is equivalent to open loop for a direct current working point, so that the zero drift is large. In order to reduce zero drift during stable operation, feedback resistors are connected in parallel at two ends of the feedback capacitor to form direct current negative feedback so as to stabilize the direct current operating point of the amplifier. Electric field data and magnetic field data of a power frequency electromagnetic field measured by the electric field induction probe and the electromagnetic induction probe are converted by the charge amplifier and then subjected to low-pass filtering, wherein the filtering is to suppress noise in the electric field data and the magnetic field data, and useless high-frequency components in the electric field data and the magnetic field data are greatly attenuated by low-frequency alternating current components. In order to overcome the defect that the impedance frequency characteristic does not change sharply with the frequency in the passive RC low-pass filtering, the low-pass filtering in the embodiment is realized by adding an operational amplifier and other active components on the RC low-pass filtering circuit to form an active low-pass filter, and the active low-pass filter has no attenuation and certain gain in a pass band, so that the data of the electric field data and the magnetic field data are not lost in the processing process. In the present embodiment, the measured electric field data and magnetic field data are transmitted by signals.
Example two:
fig. 2 is a frame diagram of an early warning system for power frequency electromagnetic field contact of an electric power worker according to an embodiment of the present invention, and fig. 3 is a frame diagram of a power frequency electromagnetic field detection apparatus for an early warning system for power frequency electromagnetic field contact of an electric power worker according to an embodiment of the present invention.
As shown in fig. 2 and fig. 3, an embodiment of the present invention further provides an early warning system for an electric power worker contacting a power frequency electromagnetic field, which is disposed on a processor of a power frequency electromagnetic field detection device, and the early warning system for the electric power worker contacting the power frequency electromagnetic field includes a data acquisition unit 10, a data processing unit 20, and a judgment early warning unit 30;
the data acquisition unit 10 is used for wearing the power frequency electromagnetic field detection device on an electric power worker and acquiring electric field data and magnetic field data of the electric power worker contacting the power frequency electromagnetic field;
the data processing unit 20 is used for processing the electric field data and the magnetic field data to obtain a short-time electric field value, a short-time magnetic field value and a long-time electric field value;
the judgment and early warning unit 30 is used for giving an alarm according to the condition that the short-time electric field value is greater than the short-time electric field contact limit value, or the short-time magnetic field data is greater than the short-time magnetic field contact limit value, or the long-time electric field value is greater than 5000V/m;
and the long-term electric field value is a time weighted average value of electric field data of the power frequency electromagnetic field contacted by the power worker in the working time.
It should be noted that the units of the second embodiment system correspond to the steps of the first embodiment method, and the steps of the first embodiment method are already described in detail.
The early warning system for the power frequency electromagnetic field contact of the power worker provided by the invention has the advantages that the power frequency electromagnetic field detection device is worn on the body of the power worker through the data acquisition unit, so that the electric field data and the magnetic field data of the power frequency electromagnetic field contact of the power worker can be directly detected, the accuracy of the detected electric field data and magnetic field data is high, the short-time electric field value, the short-time magnetic field value and the long-time electric field value obtained by the data processing unit are respectively compared with the short-time electric field contact limit value, the short-time magnetic field contact limit value and 5000V/m one by one, whether the short-time electric field value, the short-time magnetic field value and the long-time electric field value exceed the short-time electric field contact limit value, the short-time magnetic field contact limit; the technical problem of current measurement personnel contact power frequency electromagnetic field size numerical value inaccurate, can't accurately differentiate personnel's operation health, gradually influences personnel's personal safety is solved.
Example three:
the embodiment of the invention provides a computer-readable storage medium, which is used for storing computer instructions and enabling a computer to execute the early warning method for the electric power worker to contact the power frequency electromagnetic field when the computer instructions run on the computer.
Example four:
the embodiment of the invention provides a computer program, which comprises a program code, wherein when the computer program runs on a computer, the program code is used for executing the early warning method for the electric power worker to contact the power frequency electromagnetic field.
Example five:
the embodiment of the invention provides terminal equipment, which comprises a processor and a memory;
a memory for storing the program code and transmitting the program code to the processor;
and the processor is used for executing the early warning method for the power frequency electromagnetic field contact of the power staff according to the instructions in the program codes.
It should be noted that the processor is configured to execute the steps of the above-mentioned embodiment of the warning method for the electric power worker contacting the power frequency electromagnetic field according to the instructions in the program code. Alternatively, the processor, when executing the computer program, implements the functions of each module/unit in each system/apparatus embodiment described above.
Illustratively, a computer program may be partitioned into one or more modules/units, which are stored in a memory and executed by a processor to accomplish the present application. One or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of a computer program in a terminal device.
The terminal device may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The terminal device may include, but is not limited to, a processor, a memory. Those skilled in the art will appreciate that the terminal device is not limited and may include more or fewer components than those shown, or some components may be combined, or different components, e.g., the terminal device may also include input output devices, network access devices, buses, etc.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage may be an internal storage unit of the terminal device, such as a hard disk or a memory of the terminal device. The memory may also be an external storage device of the terminal device, such as a plug-in hard disk, a Smart Memory Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the terminal device. Further, the memory may also include both an internal storage unit of the terminal device and an external storage device. The memory is used for storing computer programs and other programs and data required by the terminal device. The memory may also be used to temporarily store data that has been output or is to be output.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The early warning method for the contact of the power frequency electromagnetic field of the electric power worker is characterized by comprising the following steps of:
the power frequency electromagnetic field detection device is worn on an electric power worker, and electric field data and magnetic field data of the electric power worker contacting a power frequency electromagnetic field are obtained;
processing the electric field data and the magnetic field data to obtain a short-time electric field value, a short-time magnetic field value and a long-time electric field value;
if the short-time electric field value is larger than the short-time electric field contact limit value, or the short-time magnetic field data is larger than the short-time magnetic field contact limit value, or the long-time electric field value is larger than 5000V/m, an alarm is given;
and the long-term electric field value is a time weighted average value of electric field data of the power frequency electromagnetic field contacted by the power worker in the working time.
2. The early warning method for the contact of the power frequency electromagnetic field by the electric worker according to claim 1, further comprising: expression for time weighted average:
in the formula, E is the time weighted average value of the power frequency electromagnetic field contacted by the power worker in the activity time, T is the standard working time of the power worker in one day, TiFor the time of contact of the power frequency electromagnetic field by the power operator in region i, EiThe electric field intensity of the power frequency electromagnetic field is contacted by the electric power worker in the region i, n is the number n of regions where the electric power worker works, and i is 1-n.
3. The early warning method for the contact of the power frequency electromagnetic field by the electric worker according to claim 1, further comprising: acquiring electric field data of a power frequency electromagnetic field contacted by a power frequency worker from the power frequency electromagnetic field detection device at intervals of t; the time t is less than or equal to 3 s.
4. The early warning method for the contact of the power frequency electromagnetic field by the electric worker according to claim 1, further comprising: and (4) calculating the long-term electric field value after acquiring the power detection staff contact the power frequency electromagnetic field for 15 min.
5. The early warning method for the contact of the power frequency electromagnetic field by the electric worker according to claim 1, further comprising: the power frequency electromagnetic field detection device with the electric field induction probe and the electromagnetic induction probe is used for detecting electric field data and magnetic field data of power frequency electromagnetic fields contacted by power workers.
6. The early warning method for the contact of the power frequency electromagnetic field by the electric worker according to claim 1, further comprising: and processing the electric field data and the magnetic field data by adopting a charge amplifier and low-pass filtering.
7. The early warning system for the contact of the power frequency electromagnetic field of the power worker is arranged on a processor of a power frequency electromagnetic field detection device and is characterized by comprising a data acquisition unit, a data processing unit and a judgment early warning unit;
the data acquisition unit is used for wearing the power frequency electromagnetic field detection device on an electric power worker and acquiring electric field data and magnetic field data of the electric power worker contacting the power frequency electromagnetic field;
the data processing unit is used for processing the electric field data and the magnetic field data to obtain a short-time electric field numerical value, a short-time magnetic field numerical value and a long-time electric field numerical value;
the judging and early warning unit is used for giving an alarm according to the fact that the short-time electric field value is larger than a short-time electric field contact limit value, or the short-time magnetic field data is larger than a short-time magnetic field contact limit value, or the long-time electric field value is larger than 5000V/m;
and the long-term electric field value is a time weighted average value of electric field data of the power frequency electromagnetic field contacted by the power worker in the working time.
8. A computer-readable storage medium for storing computer instructions which, when run on a computer, cause the computer to perform the method of warning of exposure of an electric worker to a power frequency electromagnetic field as claimed in any one of claims 1 to 6.
9. A computer program comprising program code means for performing a method of warning an electric worker exposed to a power frequency electromagnetic field as claimed in any one of claims 1 to 6 when said computer program is run on a computer.
10. A terminal device comprising a processor and a memory;
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is used for executing the early warning method for the electric power worker to contact the power frequency electromagnetic field according to any one of claims 1 to 6 according to the instructions in the program code.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010704152.5A CN111812414A (en) | 2020-07-21 | 2020-07-21 | Early warning method and system for power frequency electromagnetic field contact of electric power worker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010704152.5A CN111812414A (en) | 2020-07-21 | 2020-07-21 | Early warning method and system for power frequency electromagnetic field contact of electric power worker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111812414A true CN111812414A (en) | 2020-10-23 |
Family
ID=72860815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010704152.5A Pending CN111812414A (en) | 2020-07-21 | 2020-07-21 | Early warning method and system for power frequency electromagnetic field contact of electric power worker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111812414A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453942A (en) * | 2013-09-13 | 2013-12-18 | 国家电网公司 | Method for measuring power frequency electric field intensity and magnetic field intensity which are in contact with operating worker in 500kV transformer substation |
| CN103472316A (en) * | 2013-09-13 | 2013-12-25 | 国家电网公司 | Method for measuring contacted power frequency electric field intensity and magnetic field intensity when operating personnel of transformer substation inspect |
| CN106418865A (en) * | 2016-11-10 | 2017-02-22 | 国家电网公司 | Intelligent patrol safety helmet for transformer substation |
-
2020
- 2020-07-21 CN CN202010704152.5A patent/CN111812414A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453942A (en) * | 2013-09-13 | 2013-12-18 | 国家电网公司 | Method for measuring power frequency electric field intensity and magnetic field intensity which are in contact with operating worker in 500kV transformer substation |
| CN103472316A (en) * | 2013-09-13 | 2013-12-25 | 国家电网公司 | Method for measuring contacted power frequency electric field intensity and magnetic field intensity when operating personnel of transformer substation inspect |
| CN106418865A (en) * | 2016-11-10 | 2017-02-22 | 国家电网公司 | Intelligent patrol safety helmet for transformer substation |
Non-Patent Citations (3)
| Title |
|---|
| 中华人民共和国国家卫生健康委员会: ""GBZ/T 189.3—2018工作场所物理因素测量 第3部分：1Hz～100kHz电场和磁场"", 《中华人民共和国国家职业卫生标准》 * |
| 杨志祥: ""高压输电线路和设备工频电磁场环境的分析"", 《中国优秀博硕士学位论文全文数据库(硕士)工程科技Ⅱ辑》 * |
| 韩向可等: "《机电一体化系统》", 31 January 2009 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2532142C2 (en) | Method and system to monitor partial discharges | |
| CN116365716B (en) | Electricity inspection system based on internet of things platform | |
| CN107276779B (en) | Monitoring method, system and equipment | |
| CN116226766A (en) | High-voltage electrical apparatus running state monitoring system | |
| CN114325195B (en) | Wired charging detection method and device and computer readable storage medium | |
| CN111812414A (en) | Early warning method and system for power frequency electromagnetic field contact of electric power worker | |
| CN112729884B (en) | Equipment fault diagnosis method and device based on big data | |
| CN117473266B (en) | EMI power supply filter safety performance monitoring method, device, medium and equipment | |
| KR100360018B1 (en) | Apparatus for detecting a portion of discharge in a power machinery and tools | |
| CN117554717A (en) | Electromagnetic interference testing system and method for key equipment of train | |
| CN204287267U (en) | A kind of rectifier and testing current in resistance property instrument | |
| CN111812415A (en) | Method and device for monitoring substation worker to contact power frequency electromagnetic field | |
| CN108896805A (en) | Chopping signal calibration method, system and electric energy detection device | |
| KR101174350B1 (en) | System and method for diagnosing deterioration of arrester with radio frequency | |
| CN110244127B (en) | Device and method for testing frequency sweeping impedance of transformer | |
| CN113391234B (en) | Leakage detection method, control device and leakage detection equipment | |
| CN108490265B (en) | Ground resistance testing method, device and tester | |
| Secerbegovic et al. | The usage of smartphones in remote ECG monitoring scenarios | |
| CN111508600A (en) | Patient protection contact time tracking system based on radio frequency positioning technology | |
| CN216285486U (en) | Electrode state detection system | |
| CN117729209B (en) | Cloud computing-based health management data intelligent management system | |
| US10039503B2 (en) | Monitoring, analysis, and feedback of anatomical pressure measurements | |
| CN210277151U (en) | Blood pressure detection inflation monitoring circuit | |
| CN116908603B (en) | Reliability detection method and system based on connector | |
| Hu et al. | The Effect of Motion on PPG Heart Rate Sensors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201023 |
|
| RJ01 | Rejection of invention patent application after publication |