CN117715180A - Nuclear power plant wireless signal area management method based on indoor vector map - Google Patents
Nuclear power plant wireless signal area management method based on indoor vector map Download PDFInfo
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- CN117715180A CN117715180A CN202311452664.7A CN202311452664A CN117715180A CN 117715180 A CN117715180 A CN 117715180A CN 202311452664 A CN202311452664 A CN 202311452664A CN 117715180 A CN117715180 A CN 117715180A
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- 238000004891 communication Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/025—Services making use of location information using location based information parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention belongs to the technical field of nuclear power station communication, and particularly relates to a nuclear power plant wireless signal area management method based on an indoor vector map. Step 1: creating a region on the vector map; step 2: when an employee works, the employee carries wireless positioning equipment and transmits positioning information to a background server in a wireless mode, and the background server calculates the position of the employee according to the transmitted positioning information; step 3: the background compares the position of the staff with the position information of the area and judges whether the staff enters the management and control area. The safe operation of the nuclear power station can be greatly assisted in the operation time of the power station, the risk area can be bypassed in navigation, and personnel entering the risk area by mistake can be timely informed to leave.
Description
Technical Field
The invention belongs to the technical field of nuclear power station communication, and particularly relates to a nuclear power plant wireless signal area management method based on an indoor vector map.
Background
At present, the management of the field area of the nuclear power station is relatively backward, and the common implementation mode is to carry out identification on the actual ground, add a fence and orally inform. Whether personnel enter a management area or a risk area can only be found and confirmed by means of patrol or on-site investigation. The hysteresis of this way is strong, and some risk areas are not suitable for personnel to enter and examine, and are not easy to detect. If the personnel enter the risk area or the management area by mistake in time and contact with the notification or the notification treatment, the risk of personnel work can be reduced.
During the operation of a nuclear power plant, there are many critical areas containing various important information, and efficient information transfer is also required. The key areas are as follows: the wireless/Internet of things signal effective coverage area, an electromagnetic compatibility sensitive area, a high radiation area, a high noise area, a overhaul isolation area, a production operation video monitoring area, a foreign matter detection area, a high-risk operation area and the like which relate to nuclear-level equipment. The wireless coverage area has unique requirements, and the equipment of the internet of things system is required to meet specific electromagnetic compatibility requirements. In addition to these unique requirements, these critical areas have many common requirements, such as: transmitting video images of the site, providing two-way voice communication with the site personnel, wirelessly transmitting signals of site sensors (such as radiation probes or noise detection sensors, etc.), locating mobile personnel working on the site in real time, displaying the location and area of critical areas through a map platform, confirming whether personnel enter or leave a specific area, etc.
Disclosure of Invention
The invention aims to provide a nuclear power plant wireless signal area management method based on an indoor vector map, which is used for defining, marking, area data management and configuration and color rendering of a wireless coverage area on the map through the vector map. Aiming at the individual character and commonality requirements of the key areas of the nuclear power plant, a plurality of systems based on the Internet of things technology are developed by deploying and designing broadband wireless network and Internet of things basic network coverage and utilizing advanced radiation-resistant materials and structural design technology, combining the latest indoor positioning technology and digital map technology and applying the leading sensor technology; the pain point problem of the key area of the nuclear power plant is solved well: the effective area and the blind area covered by the wireless/Internet of things signal can be identified; and through the broadband wireless and the wireless transmission technology of the Internet of things, video, audio and various sensor data of a key area and state data of field devices and personnel are transmitted and utilized in real time according to service requirements.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a nuclear power plant wireless signal area management method based on an indoor vector map comprises the following steps of: creating a region on the vector map; step 2: when an employee works, the employee carries wireless positioning equipment and transmits positioning information to a background server in a wireless mode, and the background server calculates the position of the employee according to the transmitted positioning information; step 3: the background compares the position of the staff with the position information of the area and judges whether the staff enters the management and control area.
Step 1: a menu is newly built on the right key on the vector map, and a menu option of a newly built area is selected; inputting attribute data of the region, clicking a save button to enter a boundary editing page, and setting the boundary of the region by clicking a right button of a mouse and sliding the mouse, wherein the default boundary is rectangular; an irregular boundary area is set by adding boundary points on the boundary line, and the positions of the boundary points are adjusted by dragging the boundary points by a mouse; and after clicking the storage area, displaying the set area.
Step 3: if the staff enters the control area, a prompt is given.
For areas with poor coverage or areas without coverage of the wireless signal, when a person locates close to the areas, the person is prompted to be close to the areas with poor coverage of the wireless signal so as to take corresponding measures.
The corresponding measures include bypassing the area and uploading existing data before entering the area.
The prompting mode is as follows: sending short message, vibrating and sending alarm.
The beneficial effects obtained by the invention are as follows:
the map of all areas is vectorized, the related areas are covered by wireless, the data obtained by the individuals carrying the locatable equipment are transmitted to the background server in real time through the wireless network, and the locating system calculates the personal locating information and combines with the management and control area, so that the real-time management of the areas is achieved. The regional management method based on the vector map is realized, the safe operation of the nuclear power station can be greatly assisted in the operation time of the power station, the risk region can be bypassed in the navigation process, and personnel entering the risk region by mistake can be timely informed to leave.
Detailed Description
The present invention will be described in detail with reference to specific examples.
1. New region:
step 1: and a menu is newly built on the right key on the vector map, and a menu option of a newly built area is selected.
Step 2: and inputting attribute data of the region, clicking a save button to enter a boundary editing page, and setting the boundary of the region by clicking a right button of a mouse and sliding the mouse, wherein the default boundary is rectangular.
Step 3: the irregular boundary area is set by adding boundary points on the boundary line, and the boundary points can be dragged by a mouse to adjust the positions of the boundary points.
Step 4: and after clicking the storage area, displaying the set area.
2. Regional alarm management:
the area has wireless network coverage and a positioning system implemented on the basis of the wireless network.
Step 1: in the case where the vector map has been made for the entire area, the area position information and other attributes are newly created on the vector map.
Step 2: when an employee works, the employee carries equipment capable of being positioned wirelessly to work, positioning information is transmitted to a background server in a wireless mode, and the background server calculates the position of the employee through the transmitted positioning information.
Step 3: the background compares the position of the staff with the position information of the area and judges whether the staff enters the management and control area. If the staff enters the control area, a prompt is given. For areas with poor coverage or areas without coverage of the wireless signal, when a person is positioned close to the areas, the person is prompted to be close to the areas with poor coverage of the wireless signal so as to take corresponding measures, such as bypassing the areas and uploading existing data before entering the areas. The prompting mode is selected according to the carrying equipment, and the prompting mode is as follows: sending short message, vibrating and sending alarm.
Terminology and symbols: p0-transmit power: radio frequency signal power provided by the wireless transmitter to the antenna; s-received signal strength: radio frequency signal power received by the wireless receiver from the antenna; n-noise intensity: the total noise intensity of the accumulation received by the wireless receiver comprises the environmental thermal noise received by the receiver and the noise generated by the receiver; S/N-signal-to-noise ratio: the difference (ratio) between the received signal strength and the noise strength; l-radio link attenuation: the difference between the signal transmission power of the wireless transmitter and the received signal strength of the signal received by the wireless receiver; LP-radio propagation attenuation: the attenuation that the signal intensity of the radio frequency signal is regularly gradually reduced along with the increase of the transmission distance is the combination result of the inherent attenuation of the radio frequency signal along with the transmission distance (attenuation in an ideal free space), the signal fading caused by multipath effect and the like; LA-AP configuration attenuation: signal attenuation due to the housing of a wireless receiver (AP) and different types, quality of antennas, including housing attenuation and antenna attenuation; LE-AP deployment environment attenuation: a special signal attenuation due to a special signal propagation environment between a wireless transmitter (wireless phone) and a wireless receiver (AP); d-signal propagation distance: a distance between a wireless transmitter (wireless phone) and a wireless receiver (AP);
assume and boundary conditions: S/n=s-n=p0-L-N, where n= -100dBm, p0=20 dBm; l=l0+le+la+lp, where l0=40 db, lp=k×log D, i.e., l=40+le+la+k×log D, where the signal propagation distance D is an objective measure (applicable when D is not less than 1 meter), k is an empirical coefficient obtained according to different large signal propagation environments, LE is a small environmental condition around a specific AP, and LA is a determined by the antenna and box conditions employed by the specific AP. Wireless transmitters (wireless phones) employ ideal omni-directional antennas without antenna attenuation and directivity. Signal strength threshold: ensuring that the high-quality call is-80 dBm; maintaining normal call at-85 dBm; the receivable discrimination signal is-90 dBm.
Site survey and parameter empirical values: influence of the cover box: the effect of metal cage on signal strength is evident, called cage attenuation, which is a part of the configuration attenuation estimated to be 10dB by survey of cage attenuation; the effect of external antenna: the high-quality external antenna which is correctly installed (vertically placed) can effectively solve the attenuation of the cover box and is beneficial to covering the specific direction, thereby improving the communication quality; however, the external antenna itself and its wires introduce attenuation, which is referred to as antenna attenuation, which is part of configuration attenuation, compared to the use of the AP internal antenna; through investigation, the antenna attenuation of the outdoor whip antenna is estimated to be 3dB, and the antenna attenuation of the outdoor suction cup antenna is estimated to be 6dB; therefore, the quality improvement effect of the external antenna on outdoor communication is remarkable, and in the indoor environment, the sucker antenna is often horizontally placed (the sucker antenna is required to be vertically placed and surveyed and displayed, and the difference of 5-10 dB of received signal strength can be brought), or the sucker antenna is placed in a place which is seriously shielded by other objects, so that the effect of the external antenna in the indoor environment is not ideal. Building floor characteristics and k value: according to the situations of on-site construction and the deployment of internal equipment, the kinds of propagation spaces of radio frequency signals can be roughly divided into three outdoor spaces: a field building and an area between the buildings; is characterized in that no other shielding object exists basically, but reflection caused by the building exists; k has a value of 28; opening the factory building: the system comprises a PX factory building 0 m layer, a MX factory building 8 m layer and a 13 m layer, a YA factory building and a ZC factory building; the method is characterized in that a room is large, has equipment and upright posts, but is sparse; k is 30; crowded factory building: comprises a 2 m layer and a-13 m layer of a PX factory building and a 0 m layer and a-7 m layer of a MX factory building in a nuclear island; is characterized in that the room is narrow or the equipment is very dense; k is 36; deployment environment: for each AP, the surrounding environment has obvious influence on the radio frequency signals, so that the attenuation of the deployment environment is considered on the propagation path of the radio frequency signals of the specific AP, and the attenuation caused by the following conditions belongs to the attenuation of the deployment environment; wall: the wall can bring great attenuation to the radio frequency signal, so that the deployment environment attenuation brought by the wall is increased when the radio frequency signal passes through the wall; thick wall attenuation-70 dB, standard wall attenuation-60 dB, if the wall is not complete, tight, but has some openings, then the environmental attenuation is to be considered to compensate for in computing the deployment of the wall, door-20 dB, pipeline opening-40 dB, open door opening-50 dB, vertical column: if the AP is installed on the upright post in a wall-mounted mode, the front surface of the upright post can be considered to normally transmit radio frequency by taking the surface provided with the AP as a reference, and the upright post is used for transmitting radio frequency signals at the rear surface of the upright post, so that the direction attenuation is required to be introduced for 10dB, and shielding is required to be carried out: if an oversized device is close to the AP, it will have a large impact on the propagation of the radio frequency signal, and the shielding attenuation is 20dB, which is the case in 13 m layers of MX plants.
And displaying a wireless signal intensity heat map according to the combination of the calculated result and the vector map. And uses color to distinguish the intensity of the wireless signal. The green area represents a very good radio signal strength. The yellow area represents the inferior radio signal strength. The red area is poor in wireless signal strength and may affect communication and positioning. When a single base station is selected, a wireless signal profile for the single base station can be seen.
Acquiring wireless signal coverage of a nuclear power plant factory building in real time; modeling (two-dimensional planar model) of wireless signal coverage in a nuclear power plant factory building; the wireless signal coverage model is visualized on a vector map; the combination of wireless signal coverage data and a map and a dynamic identification method; alert mechanisms within an area.
Claims (6)
1. A nuclear power plant wireless signal area management method based on an indoor vector map is characterized by comprising the following steps of: step 1: creating a region on the vector map; step 2: when an employee works, the employee carries wireless positioning equipment and transmits positioning information to a background server in a wireless mode, and the background server calculates the position of the employee according to the transmitted positioning information; step 3: the background compares the position of the staff with the position information of the area and judges whether the staff enters the management and control area.
2. The indoor vector map-based nuclear power plant wireless signal area management method according to claim 1, wherein: step 1: a menu is newly built on the right key on the vector map, and a menu option of a newly built area is selected; inputting attribute data of the region, clicking a save button to enter a boundary editing page, and setting the boundary of the region by clicking a right button of a mouse and sliding the mouse, wherein the default boundary is rectangular; an irregular boundary area is set by adding boundary points on the boundary line, and the positions of the boundary points are adjusted by dragging the boundary points by a mouse; and after clicking the storage area, displaying the set area.
3. The indoor vector map-based nuclear power plant wireless signal area management method according to claim 1, wherein: step 3: if the staff enters the control area, a prompt is given.
4. The indoor vector map-based nuclear power plant wireless signal area management method according to claim 3, wherein: for areas with poor coverage or areas without coverage of the wireless signal, when a person locates close to the areas, the person is prompted to be close to the areas with poor coverage of the wireless signal so as to take corresponding measures.
5. The indoor vector map-based nuclear power plant wireless signal area management method according to claim 4, wherein: the corresponding measures include bypassing the area and uploading existing data before entering the area.
6. The indoor vector map-based nuclear power plant wireless signal area management method according to claim 4, wherein: the prompting mode is as follows: sending short message, vibrating and sending alarm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311452664.7A CN117715180A (en) | 2023-11-03 | 2023-11-03 | Nuclear power plant wireless signal area management method based on indoor vector map |
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