CN111818455B - Fire extinguishing system of mobile substation - Google Patents
Fire extinguishing system of mobile substation Download PDFInfo
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- CN111818455B CN111818455B CN202010738364.5A CN202010738364A CN111818455B CN 111818455 B CN111818455 B CN 111818455B CN 202010738364 A CN202010738364 A CN 202010738364A CN 111818455 B CN111818455 B CN 111818455B
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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
- H04W4/021—Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
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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
- H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
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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
- H04W4/33—Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
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- H—ELECTRICITY
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- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
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Abstract
The invention discloses a mobile substation fire fighting system which comprises an emergency command center, a node positioning module, an information display module and an information management module, wherein the emergency command center synchronizes data information of the information management module into a database through a wireless network, the information management module is provided with different operation authorities to manage content, announcement and maintenance information in a substation, a data end of the information management module is interactively connected with the information display module to display the data information in the substation in real time, data of the information display module is connected with the emergency command center through instruction signals, a signal end of the emergency command center is connected with the node positioning module, and the Bluetooth technical characteristics are utilized, the special environment background of fire fighting positioning in the substation is combined, the Bluetooth positioning node design of single node and double ends is adopted, so that the system positioning precision and the system stability are improved while the system layout is simplified.
Description
Technical Field
The invention relates to the technical field of mobile substations, in particular to a fire-fighting system of a mobile substation.
Background
At present, more and more large public high-rise buildings are provided, the size of the buildings is larger, the space structure is more complex, the use frequency of the mobile substation is increased invisibly, and therefore the occurrence probability of fire disasters is increased. Therefore, how to enable the fire rescue personnel to quickly master the indoor environment when a fire disaster occurs, quickly and effectively implement rescue, ensure the life and property safety of people to the maximum extent, and ensure the life safety of the fire rescue personnel to become very important.
The existing mobile substation fire-fighting system also has the following defects:
(1) Fire fighting rescue positioning in the existing mobile substation mainly depends on individual fire fighting equipment, but cannot be applied in a large scale due to low efficiency, high cost and poor portability;
(2) The hardware cost of the existing fire fighting system is too high, and the hardware is not easy to deploy and maintain, so that the system stability is poor and the cost is high.
Disclosure of Invention
Therefore, the invention provides a mobile substation fire fighting system, which utilizes the technical characteristics of Bluetooth, combines the special environment background of fire fighting positioning in a substation, and adopts the design of the Bluetooth positioning nodes at the single node and the double ends, thereby simplifying the system layout, simultaneously improving the positioning precision and the system stability of the system and solving the problem of low rescue efficiency caused by too high hardware cost, difficult deployment and maintenance of hardware and difficult positioning of the mobile substation fire fighting system in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme:
a mobile substation fire protection system comprises an emergency command center, a node positioning module, an information display module and an information management module, wherein the emergency command center synchronizes data information of the information management module into a database through a wireless network, the information management module sets different operation authorities to manage content, announcement and maintenance information in a substation, a data end of the information management module is interactively connected with the information display module to display the data information in the substation in real time, data of the information display module is connected with the emergency command center through instruction signals, and a signal end of the emergency command center is connected with the node positioning module;
the node positioning module is internally provided with a main control unit, a Bluetooth module, a signal transmitting antenna module and an interface module, interactive information of the Bluetooth module is synchronous to the information management module, a control end of the Bluetooth module is connected with the main control unit, a signal end of the Bluetooth module is connected with the signal transmitting antenna module, the control end of the signal transmitting antenna module is connected with the main control unit through the interface module, and the signal end of the main control unit feeds back to the emergency command center.
As a preferred scheme of the present invention, the signal transmitting antenna module synchronously transmits two independent and reverse bluetooth signals integrated in the bluetooth module by a single-node dual-end positioning node mode to the main control unit.
As a preferred scheme of the present invention, the two independent and inverted bluetooth signal terminals are connected to the signal transmitting antenna module interface terminal through a balun matching circuit, and the signal terminal of the signal transmitting antenna module is connected to the bluetooth module through a node radio frequency module.
As a preferred scheme of the present invention, a positioning node is deployed in a positioning area in the main control unit through a positioning algorithm, and an RSSI value of a bluetooth node signal of the bluetooth module is received through a mobile terminal.
As a preferred scheme of the present invention, the relevant bluetooth data is obtained by removing coarse error data through the grebbs criterion according to the RSS I value of the bluetooth node signal.
As a preferred scheme of the invention, after Kalman filtering processing is carried out on the Bluetooth data, the data are solved through an improved quadrilateral positioning algorithm, and the final position coordinate of the target is determined.
As a preferable scheme of the present invention, the final position coordinates are fed back to the emergency command center through a wireless network to perform related operations.
As a preferred scheme of the present invention, the improved four-side positioning algorithm constructs an electromagnetic wave path loss model according to the established balun matching circuit to calculate the linear distance between the mobile positioning terminal device and each bluetooth node transmitting end.
As a preferred scheme of the present invention, at least one bluetooth module is disposed in the bluetooth node transmitting end positioning area.
The invention has the following advantages:
the invention is a mobile substation fire-fighting system, which uses the Bluetooth technical characteristics, combines the special environment background of fire-fighting location in the substation, adopts the Bluetooth location node design of single node and double ends, designs two reverse independent Bluetooth radio-frequency signal transmitting ends on one Bluetooth location node, and enables a mobile terminal to simultaneously receive the Bluetooth signals in two different directions on one node, thereby simplifying the system layout, improving the system location precision and the system stability, integrating the daily office work and external services of the substation fire-fighting through the Internet, optimizing the office work and service flow on the Internet, limiting the work and service parts of each fire-fighting department to the influence of distance and time, and providing a more effective office mode for the mobile substation.
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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. It should be apparent that the drawings in the following description are merely exemplary and that other implementation drawings may be derived from the provided drawings by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is a block diagram of a mobile substation fire protection system according to an embodiment of the present invention;
in the figure:
1-emergency command center; 2-an information management module; 3-an information display module; 4-a node location module; 5-a database; 6-a main control unit; a 7-balun matching circuit; 8-a signal transmitting antenna module; 9-a Bluetooth module; 10-node radio frequency module.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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.
As shown in fig. 1, the invention provides a mobile substation fire fighting system, which integrates daily office work and external services of substation fire fighting through the internet, optimizes office work and service flows on the internet, and limits the work and service departments of each fire fighting department to the influence of distance and respective time, thereby providing a more effective office mode for the mobile substation.
The system comprises an emergency command center 1, a node positioning module 4, an information display module 3 and an information management module 2, wherein the emergency command center 1 synchronizes data information of the information management module 2 into a database 5 through a wireless network, the information management module 2 sets different operation authorities to manage content, announcement and maintenance information in a transformer substation, the data end of the information management module 2 is in interactive connection with the information display module 3 to display the data information in the transformer substation in real time, the data of the information display module 3 is connected with the emergency command center 1 through an instruction signal, and the signal end of the emergency command center 1 is connected with the node positioning module 4.
In this embodiment, each item of data in the database 5 is maintained, stored and set in authority through the information management module 2, and the real-time information inside the mobile substation transmitted by the node positioning module 4 is received, and the information in the station is displayed through the information display module 3, so that electronic informatization of fire control management and control information in the substation is realized, improvement of the administrative efficiency of fire departments is facilitated, and the administrative cost is reduced.
Node orientation module 4 embeds there are main control unit 6, bluetooth module 9 and signal transmission antenna module 8, bluetooth module 9's mutual information extremely synchronous information management module 2, bluetooth module 9's control end is connected main control unit 6, bluetooth module 9's signal end is connected signal transmission antenna module 8, signal transmission antenna module 8's control end passes through interface module and connects main control unit 6, main control unit 6's signal end feedback extremely emergency command center 1.
In the embodiment, the characteristics of the Bluetooth technology are utilized, the background of a fire-fighting positioning special environment in a transformer substation is combined, the design of the Bluetooth positioning nodes with single-node double ends is adopted, and two reverse independent Bluetooth radio-frequency signal transmitting ends are designed on one Bluetooth positioning node, so that the mobile terminal can simultaneously receive the Bluetooth signals in two different directions on one node, and the system positioning precision and the system stability are improved while the system layout is simplified.
In this embodiment, the signal transmitting antenna module 8 adopts a non-connection based network topology structure, which is responsible for regularly and externally transmitting broadcast signals, and the listener is mainly responsible for continuously scanning broadcast signals in the environment and receiving the broadcast signals, thereby forming a unidirectional star-shaped wireless network structure, the network topology structure can be simultaneously provided with a plurality of peripherals, and can also be simultaneously provided with a plurality of listeners.
The signal transmitting antenna module 8 synchronously transmits two independent and reverse bluetooth signals integrated in the bluetooth module 9 in a single-node double-end positioning node mode to the main control unit 6.
In the embodiment, a single-node double-end Bluetooth positioning node design scheme is adopted, the position information of the fire fighter is shared by an external commander, so that the on-site commander can master the specific situations of a rescue site and rescue workers in real time, and the life safety of the fire rescue workers is guaranteed.
In this embodiment, single node bi-polar bluetooth location node design compares in traditional single-ended bluetooth location node, and this node has integrateed two independent reverse bluetooth signal transmitting terminals at same node, is independently provided the signal by two CC2541 chips respectively for the location node can stably provide a plurality of node bluetooth signals under the special environment of fire control location in the transformer substation, improves system reliability.
The two independent and reverse Bluetooth signal ends are connected with the interface end of the signal transmitting antenna module 8 through a balun matching circuit 7, and the signal end of the signal transmitting antenna module 8 is connected with the Bluetooth module 9 through a node radio frequency module 10.
In this embodiment, the balun matching circuit 7 is composed of a balun circuit and a T-type matching circuit, and the differential rf signal is converted into a single-ended rf signal by the balun circuit and impedance matching of the differential port of the T-type matching circuit, and is provided to the rf antenna terminal.
In this embodiment, the main control unit 6 is composed of a central device and a plurality of peripheral devices, in the network structure, the central device is connected with the peripheral devices to realize bidirectional communication, and one central device can be connected with 7 peripheral devices at most simultaneously, while one peripheral device can be connected with only one central device at the same time, the communication between the two parties is that the central device sends a connection request signal, the peripheral devices are connected with the central device through a bluetooth GATT protocol after receiving the connection request, then the two parties realize bidirectional communication through the bluetooth GATT protocol, and similarly, after the peripheral devices do not receive the connection request within a certain time, the peripheral nodes start a sleep mode to reduce the power consumption of the system.
And a positioning node is deployed in the positioning area in the main control unit 6 through a positioning algorithm, and the RSSI value of the Bluetooth node signal of the Bluetooth module 9 is received through a mobile terminal.
And judging through a Graves criterion according to the RSSI value of the Bluetooth node signal to eliminate the gross error data to obtain related Bluetooth data.
In the embodiment, the positioning area is divided through a positioning algorithm, the Bluetooth positioning nodes are reasonably installed, bluetooth node signals completely cover the whole positioning area, each area can receive at least 4 effective Bluetooth node RSSI values, and system positioning is realized.
After Kalman filtering processing is carried out on the Bluetooth data, resolving is carried out on the data through an improved four-side positioning algorithm, and a final position coordinate of a target is determined.
In the embodiment, a linear Kalman filtering algorithm is adopted to filter the RSSI value of the node, the algorithm updates the estimation of a state variable by using an estimation value at the previous moment and an observation value at the current moment through a state space model of signals and noise to obtain an estimation value at the current moment, the main working process of the algorithm is divided into a prediction stage and an updating stage, and the prediction stage estimates the state quantity at the next moment according to the state quantity at the previous moment; and in the updating stage, the current optimal state is estimated according to the estimation value and the observation value obtained at the current moment.
And feeding back the final position coordinates to the emergency command center 1 through a wireless network to execute related operations.
The improved four-side positioning algorithm is used for constructing an electromagnetic wave path loss model according to the established balun matching circuit 7 so as to calculate the linear distance between the mobile positioning terminal equipment and each Bluetooth node transmitting end.
In the embodiment, a mobile positioning terminal receives a signal strength indication (RSSI) value transmitted by a known positioning node, and converts the received RSS value into a distance according to propagation loss models of signals in different environments, so that the positioning of the mobile positioning terminal is realized according to a positioning algorithm.
In the embodiment, an improved four-side positioning algorithm distinguishes four signal transmitting ends (four sides) of two nodes, one transmitting end of each node and two transmitting ends of another node form two pairs of bilateral positioning to form four pairs of bilateral positioning, and then the bilateral positioning algorithm is used for carrying out bilateral positioning on four pairs of signals, so that four position coordinates are obtained by the four pairs of bilateral positioning, and the four position coordinates are called as four estimated positions; the second part is to apply a centroid algorithm to the four estimated positions to obtain a polygon centroid coordinate formed by four coordinate points, namely the positioning coordinate of the system.
At least one Bluetooth module 9 is arranged in the Bluetooth node transmitting end positioning area.
In the embodiment, after the positioning nodes are deployed in the positioning area, the mobile positioning terminal equipment receives and stores the RSSI values of the nearest four Bluetooth node signals, and then the received RSSI values are judged according to the Grabbs criterion, so that the influence of coarse errors on the system precision is eliminated, then Kalman filtering processing is performed on the data, the system positioning errors are further reduced, and finally, the data are resolved by using an improved four-side positioning algorithm, so that the final position coordinates of a target are determined, and system positioning is realized.
This mobile substation fire extinguishing system, daily official working with the transformer substation fire control is integrated through the internet with external service, and just optimize official working and service flow on the internet, make each fire control, the work of department and service portion are subject to the influence of distance and time separately, thereby provide more effective office methods for self, and combine bluetooth module's location node and location algorithm design, a high efficiency has been established, stable fire protection positioning system in the mobile substation, through carrying out range finding and location calculation to the node RSSI data that mobile terminal received, confirm the target position, can be high-efficient, stable realize the location to the fire protection position in the transformer substation, satisfy fire control location demand in the transformer substation, have very strong practicality.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, it is intended that all such modifications and alterations be included within the scope of this invention as defined in the appended claims.
Claims (5)
1. A mobile substation fire protection system is characterized by comprising an emergency command center (1), a node positioning module (4), an information display module (3) and an information management module (2), wherein the emergency command center (1) synchronizes data information of the information management module (2) into a database (5) through a wireless network, the information management module (2) is provided with different operation authorities to manage content, announcement and maintenance information in a substation, a data end of the information management module (2) is interactively connected with the information display module (3) to display the data information in the substation in real time, data of the information display module (3) is connected with the emergency command center (1) through an instruction signal, and a signal end of the emergency command center (1) is connected with the node positioning module (4);
a master control unit (6), a Bluetooth module (9) and a signal transmitting antenna module (8) are arranged in the node positioning module (4), interactive information of the Bluetooth module (9) is synchronized to the information management module (2), a control end of the Bluetooth module (9) is connected with the master control unit (6), a signal end of the Bluetooth module (9) is connected with the signal transmitting antenna module (8), a control end of the signal transmitting antenna module (8) is connected with the master control unit (6) through an interface module, and the signal end of the master control unit (6) is fed back to the emergency command center (1);
a positioning node is deployed in a positioning area through a positioning algorithm in the main control unit (6), and an RSSI value of a Bluetooth node signal of the Bluetooth module (9) is received through a mobile terminal;
judging through a Graves criterion according to the RSSI value of the Bluetooth node signal to eliminate gross error data to obtain related Bluetooth data;
after Kalman filtering processing is carried out on the Bluetooth data, resolving is carried out on the data through an improved four-side positioning algorithm, and a final target position coordinate is determined;
the improved four-side positioning algorithm is used for constructing an electromagnetic wave path loss model according to the established balun matching circuit (7) to calculate the linear distance between the mobile positioning terminal equipment and each Bluetooth node transmitting end;
the improved four-side positioning algorithm comprises the following steps:
four signal transmitting ends of two nodes are distinguished, two pairs of bilateral positioning are formed by one transmitting end of each node and two transmitting ends of the other node, four pairs of bilateral positioning are formed, then the four pairs of signals are bilaterally positioned by utilizing a bilateral positioning algorithm, and four position coordinates are obtained by the four pairs of bilateral positioning, namely four estimated positions; and solving the polygonal mass center coordinate formed by the four coordinate points by applying a mass center algorithm to the four estimated positions, wherein the polygonal mass center coordinate is the positioning coordinate of the system.
2. A mobile substation fire fighting system according to claim 1, characterized in that the signal transmitting antenna module (8) transmits simultaneously two independent inverted bluetooth signals integrated at the bluetooth module (9) by a single node double ended positioning node mode to the master control unit (6).
3. The fire protection system of a mobile substation according to claim 2, wherein the two independent and opposite Bluetooth signal terminals are connected to the interface terminal of the signal transmitting antenna module (8) through a balun matching circuit (7), and the signal terminal of the signal transmitting antenna module (8) is connected to the Bluetooth module (9) through a node radio frequency module (10).
4. A mobile substation fire fighting system according to claim 1, characterized in that the final position coordinates are fed back to the emergency command center (1) via a wireless network to perform relevant operations.
5. A mobile substation fire fighting system according to claim 4, characterized in that at least one of said Bluetooth modules (9) is arranged in said Bluetooth node transmitter location area.
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| CN106408346A (en) * | 2016-09-30 | 2017-02-15 | 重庆智道云科技有限公司 | Physical place behavior analysis system and method based on Internet of things and big data |
| CN108767991A (en) * | 2018-08-31 | 2018-11-06 | 广东电网有限责任公司 | Transformer substation assisted devices monitoring device |
| CN109541543A (en) * | 2019-01-09 | 2019-03-29 | 深圳市民明科技有限公司 | A kind of fire-fighting Field Force positioning system, localization method and detection positioning device |
| CN210042228U (en) * | 2019-04-25 | 2020-02-07 | 湘潭大学 | Fire rescue system based on Zigbee technology |
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2020
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106408346A (en) * | 2016-09-30 | 2017-02-15 | 重庆智道云科技有限公司 | Physical place behavior analysis system and method based on Internet of things and big data |
| CN108767991A (en) * | 2018-08-31 | 2018-11-06 | 广东电网有限责任公司 | Transformer substation assisted devices monitoring device |
| CN109541543A (en) * | 2019-01-09 | 2019-03-29 | 深圳市民明科技有限公司 | A kind of fire-fighting Field Force positioning system, localization method and detection positioning device |
| CN210042228U (en) * | 2019-04-25 | 2020-02-07 | 湘潭大学 | Fire rescue system based on Zigbee technology |
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