CN112330917B - Method, device and system for positioning fire point - Google Patents
Method, device and system for positioning fire point Download PDFInfo
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- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
- G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
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- G—PHYSICS
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Abstract
The invention discloses a method, a device and a system for positioning fire points, wherein infrared images of a monitoring area of a thermal imaging camera are acquired, and first longitude and latitude information of the position of the thermal imaging camera is acquired; acquiring coordinate information of the fire point in the infrared image; according to the first longitude and latitude information and the coordinate information, the second longitude and latitude information of the fire point is determined, the problems that the fire point cannot be accurately found and positioned by image intelligent identification are solved, and timeliness and accuracy of fire point identification are improved.
Description
Technical Field
The invention relates to the field of video monitoring, in particular to a method, a device and a system for positioning fire points.
Background
The burning of the crop straws becomes a source of air pollution, and in the aspects of mountain forest fire prevention and urban fire prevention, fire points need to be found in time and alarms in time, and fire point events in a video monitoring area need to be intelligently identified and alarmed.
In the related technology, the intelligent recognition mode is used for finding fire points, certain errors exist in the image recognition technology, the situation that the fire points are not reported is possible, and the intelligent recognition mode can only be used for detecting fire events and cannot be used for carrying out geographical positioning on the geographical positions of the fire events.
Aiming at the problem that in the related technology, intelligent image identification cannot accurately find fire points and position the fire points, no effective solution is provided at present.
Disclosure of Invention
The embodiments of the present invention at least solve the above-mentioned problems in the related art, and provide a method, an apparatus, and a system for locating a fire point.
According to an aspect of the present invention, there is provided a method of locating a fire point, the method comprising: acquiring an infrared image of a monitoring area of a thermal imaging camera, and acquiring first longitude and latitude information of the position of the thermal imaging camera;
acquiring coordinate information of the fire point in the infrared image;
and determining second longitude and latitude information of the fire point according to the first longitude and latitude information and the coordinate information.
In some of these embodiments, before the acquiring the infrared image of the monitored area of the thermal imaging camera, the method includes:
the method comprises the steps of obtaining a temperature value of a temperature sensor, generating an infrared starting signal under the condition that the temperature value exceeds a preset threshold value, wherein the infrared starting signal indicates that a thermal imaging camera is started, and the thermal imaging camera obtains an infrared image of a monitoring area.
In some embodiments, the determining the second longitude and latitude information of the fire point comprises:
acquiring the angle deviation of the fire point according to the cruising angle of the thermal imaging camera, the abscissa of the fire point in the infrared image and the width value of the infrared image;
and determining second longitude and latitude information of the fire point according to the first longitude and latitude information, the angle deviation and the coordinate information.
In some embodiments, the determining the second longitude and latitude information of the fire point comprises:
acquiring a distance value of the fire point according to the height value and the pitching angle of the thermal imaging camera, the ordinate of the fire point in the infrared image and the height value of the infrared image;
and determining second longitude and latitude information of the fire point according to the distance value, the first longitude and latitude information, the angle deviation and the coordinate information.
In some of these embodiments, after determining the second latitude and longitude information of the fire point, the method includes:
and generating and sending alarm information, wherein the alarm information carries the second longitude and latitude information.
According to another aspect of the present invention, there is also provided a fire point locating device, the device comprising:
the first acquisition module is used for acquiring an infrared image of a monitoring area of the thermal imaging camera and acquiring first longitude and latitude information of the position where the thermal imaging camera is located;
the second acquisition module is used for acquiring the coordinate information of the fire point in the infrared image;
and the positioning module is used for determining second longitude and latitude information of the fire point according to the first longitude and latitude information and the coordinate information.
In some of these embodiments, the apparatus further comprises:
and the warning module is used for generating and sending warning information, and the warning information carries the second longitude and latitude information.
According to another aspect of the present invention, there is also provided a system for locating a fire point, the system comprising: a thermal imaging camera and a monitoring platform;
the thermal imaging camera acquires an infrared image of a monitored area;
the monitoring platform acquires an infrared image of a monitoring area of a thermal imaging camera and acquires first longitude and latitude information of the position of the thermal imaging camera; acquiring coordinate information of the fire point in the infrared image; and determining second longitude and latitude information of the fire point according to the first longitude and latitude information and the coordinate information.
In some embodiments, the monitoring platform generates and sends alarm information, where the alarm information carries the second longitude and latitude information.
In some embodiments, the monitoring platform is configured to acquire a temperature value of the temperature sensor before acquiring an infrared image of a monitoring area of the thermal imaging camera, and generate an infrared turn-on signal when the temperature value exceeds a preset threshold, where the infrared turn-on signal indicates to turn on the thermal imaging camera, and the thermal imaging camera acquires an infrared image of the monitoring area.
According to an aspect of the present invention, there is also provided a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method when executing the computer program.
According to an aspect of the invention, there is also provided a computer-readable storage medium, on which a computer program is stored which, when executed by a processor, implements the method.
According to the invention, the infrared image of the monitoring area of the thermal imaging camera is obtained, and the first longitude and latitude information of the position of the thermal imaging camera is obtained; acquiring coordinate information of the fire point in the infrared image; according to the first longitude and latitude information and the coordinate information, the second longitude and latitude information of the fire point is determined, the problems that the fire point cannot be accurately found and positioned by image intelligent identification are solved, and timeliness and accuracy of fire point identification are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:
fig. 1 is a schematic application environment of a fire point locating method according to an embodiment of the present application;
FIG. 2 is a flow chart of a method of locating a fire in accordance with an embodiment of the present invention;
FIG. 3 is a flow chart of a sensor triggered fire location in accordance with an embodiment of the present invention;
FIG. 4 is a flow chart of a secondary fire point determination according to an embodiment of the present invention;
FIG. 5 is a block diagram of a fire point locating device according to an embodiment of the present invention;
FIG. 6 is a block diagram of a fire secondary confirmation locating apparatus according to an embodiment of the present invention;
fig. 7 is a block diagram of a fire alarm apparatus according to an embodiment of the present invention;
FIG. 8 is a system for locating fire points in accordance with embodiments of the present invention;
FIG. 9 is a block diagram of a straw burning warning system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application.
It is obvious that the drawings in the following description are only examples or embodiments of the present application, and that it is also possible for a person skilled in the art to apply the present application to other similar contexts on the basis of these drawings without inventive effort. Moreover, it should be appreciated that such a development effort might be complex and tedious, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, given the benefit of this disclosure, without departing from the scope of this disclosure.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.
Unless otherwise defined, technical or scientific terms referred to herein should have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" and "an" and "the" and similar referents in the context of describing the invention (including a single reference) are to be construed in a non-limiting sense as indicating either the singular or the plural. The present application contemplates the terms "comprises," "comprising," "includes," "including," "has," "having" and any variations thereof, being intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but rather can include electrical connections, whether direct or indirect. The term "plurality" as used herein means two or more. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, "a and/or B" may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. Reference herein to the terms "first," "second," "third," and the like, are merely to distinguish similar objects and do not denote a particular ordering for the objects.
The method for locating a fire point provided by the present application can be applied to the application environment shown in fig. 1, and fig. 1 is a schematic view of the application environment of the method for locating a fire point according to an embodiment of the present invention, as shown in fig. 1. Wherein, the thermal imaging device 102 and the monitoring background 104 perform data transmission through a network, the thermal imaging device 102 acquires an infrared image of a monitored area and sends the infrared image to the monitoring background 104, the monitoring background 104 also acquires first longitude and latitude information of the position of the thermal imaging camera 102, the first longitude and latitude information may be acquired through a digital vector map, or may be acquired through a Positioning System configured for the thermal imaging camera 102 itself, the Positioning System may include a Global Positioning System (GPS), a beidou navigation System, etc., acquires coordinate information of a fire point in the infrared image, and determines second longitude and latitude information of the fire point according to a conversion relationship among a world coordinate System, a camera coordinate System and an image coordinate System of the thermal imaging device 102, in this embodiment, the second longitude and latitude value information indicates a specific location of the fire point. The thermal imaging device 102 may be a surveillance camera installed in a farm, a street or a public place, or may be a mobile device such as an unmanned aerial vehicle or a terminal device, and in addition, the thermal imaging device 102 may be a dome camera or a gun camera, and the monitoring platform 104 may be implemented by an independent server or a server cluster formed by a plurality of servers.
In an embodiment of the present invention, a method for locating a fire point is provided, and fig. 2 is a flowchart of a method for locating a fire point according to an embodiment of the present invention, the method including the steps of:
step S202, acquiring an infrared image of a monitoring area of the thermal imaging camera 102, and acquiring first longitude and latitude information of a location where the thermal imaging camera 102 is located, where the setting of the monitoring area may be adjusted by a pan-tilt where the thermal imaging camera 102 is located, for example, 360 ° cruise is performed by the pan-tilt of the thermal imaging camera 102, the monitoring area is a range of 360 ° around the thermal imaging camera 102, the first longitude and latitude information is longitude and latitude information in a vector digital map where the thermal imaging camera 102 is located, after the installation location of the thermal imaging camera 102 is set, the longitude and latitude information of the installation location is configured in an initial state of the thermal imaging camera 102 to generate the first longitude and latitude information, and the first longitude and latitude information may also be acquired in real time by a positioning system of the thermal imaging camera 102, for example, in a case where the thermal imaging camera 102 is set on an unmanned aerial vehicle, the first longitude and latitude information is obtained through a positioning system on the unmanned aerial vehicle.
Step S204, acquiring coordinate information of a fire point in the infrared image, wherein the coordinate position of the fire point in an image coordinate system of the infrared image corresponds to the coordinate position of the fire point in world coordinates, detecting all pixel points in a monitored area by a thermal imaging camera according to a temperature sensor to generate an infrared image in real time, and regarding a certain point, if the temperature sensed by the temperature sensor exceeds a preset threshold value, considering the point as the fire point;
step S206, according to the first longitude and latitude information and the coordinate information, determining second longitude and latitude information of the fire point, acquiring longitude and latitude information of the thermal imaging camera 102, monitoring coordinate information of the fire point in an infrared image, measuring a distance relation between the fire point and the thermal imaging camera 102 through conversion between a world coordinate system and an image coordinate system, setting the distance relation on a position coordinate of the first longitude and latitude information, and determining the second longitude and latitude information, wherein the second longitude and latitude information indicates a specific position of the fire point.
Through the steps S202 to S206, compared with the related art in which whether there is a fire point can only be identified through image identification and the situation of false identification often occurs, the present invention can not only accurately identify the fire point through the thermal imaging camera 102, but also determine the longitude and latitude information of the fire point through the longitude and latitude information of the thermal imaging camera 102 and the position of the fire point in the infrared image, thereby solving the problem that the intelligent image identification cannot accurately find the fire point and perform fire point positioning, and improving the timeliness and accuracy of fire point identification.
In an embodiment of the present invention, a method for locating a fire in conjunction with an environmental sensor trigger is provided, and fig. 3 is a flow chart of a sensor-triggered fire location according to an embodiment of the present invention, the method including the steps of:
step S302, acquiring a temperature value of a temperature sensor, and generating an infrared start signal when the temperature value exceeds a preset threshold, where the infrared start signal indicates to start the thermal imaging camera 102, and the temperature sensor may be disposed at a position of a monitored area or integrated on the thermal imaging camera 102.
Through the step S302, the infrared image of the monitored area is obtained relative to the thermal imaging camera 102, the thermal imaging camera 102 is always turned on to monitor the fire, the overall energy consumption of the fire monitoring system is increased, and the monitored area is changed significantly when the fire occurs in the monitored area.
In one embodiment, the angular deviation of the fire point is obtained according to the cruising angle of the thermal imaging camera 102, the abscissa of the fire point in the infrared image and the width value of the infrared image; determining second longitude and latitude information of the fire point according to the first longitude and latitude information, the angle deviation and the coordinate information;
θ ═ β + x/L equation 1
The angular deviation may be determined by equation 1, where θ is the angular deviation of the fire point, β is the cruising angle of the thermal imaging camera 102, x is the abscissa of the fire point in the infrared image, and L is the width value of the infrared image.
In one embodiment, in case that the height value of the thermal imaging camera 102 needs to be considered, the distance value of the fire point is obtained according to the height value of the thermal imaging camera 102, the pitch angle, the ordinate of the fire point in the infrared image and the height value of the infrared image;
s ═ H tan (α + (H-y)/H) formula 2
The distance value of the fire point may be determined by formula 2, where S is the distance value of the fire point, H is the height value of the thermal imaging camera 102, y is the vertical coordinate of the fire point in the infrared image, and H is the height value of the infrared image, and the second longitude and latitude information of the fire point is determined according to the distance value, the first longitude and latitude information, the angle deviation, and the coordinate information.
In an embodiment, after the second longitude and latitude information of the fire point is obtained, warning information may be generated and sent to the terminal device, where the warning information may carry the second longitude and latitude information, the warning information further includes an infrared image captured by the thermal imaging camera 102 during fire detection, a pitch angle α of the thermal imaging camera 102, a cruise angle β of the thermal imaging camera, and a visible angle γ of the thermal imaging camera, and the infrared image may be displayed on a warning platform or sent to a mobile phone of a person in charge of fire prevention, etc. to obtain pose information of the thermal imaging camera 102, so that a cradle head where the thermal imaging camera is located may be conveniently controlled, a scene of the fire point may be further displayed more clearly, and a position of the fire point may be positioned more accurately.
The embodiment further provides a device for locating a fire point, which is used for implementing the above embodiments and preferred embodiments, and the description of the device is omitted. As used below, the term "module" or the like may implement a combination of software and/or hardware of predetermined functions. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware or a combination of software and hardware is also possible and contemplated.
Fig. 4 is a block diagram of a fire point locating apparatus according to an embodiment of the present invention, as shown in fig. 4, the apparatus including:
a first obtaining module 41, configured to obtain an infrared image of a monitoring area of the thermal imaging camera 102, and obtain first longitude and latitude information of a location where the thermal imaging camera 102 is located;
the second acquiring module 42 is used for acquiring the coordinate information of the fire point in the infrared image;
and the positioning module 43 is configured to determine second longitude and latitude information of the fire point according to the first longitude and latitude information and the coordinate information.
Through the device, whether can only pass through image recognition in for the correlation technique and have the condition of fire, and the condition of mistake discernment often appears, first acquisition module 41 can accurately discern the fire through infrared image, orientation module 43 passes through the longitude and latitude information of thermal imaging camera 102 and the position of fire in infrared image, still determine the longitude and latitude information of fire, solve the problem that image intelligent recognition can't accurately discover the fire and carry out the fire location, the promptness and the degree of accuracy of fire discernment have been improved.
Fig. 5 is a block diagram of a fire alarm apparatus according to an embodiment of the present invention, and as shown in fig. 5, the apparatus includes:
the warning module 51 is configured to generate and send warning information, where the warning information carries the second longitude and latitude information, the second longitude and latitude information may be displayed in a quality map of a warning platform, and the warning information may further include an infrared image captured by the thermal imaging camera 102 and pose information of a pan-tilt where the thermal imaging camera is located when the fire is detected, so as to further more clearly display a scene situation of the fire and more accurately position the location of the fire.
Fig. 6 is a block diagram of a fire point locating system according to an embodiment of the present invention, and as shown in fig. 6, the system includes: a thermal imaging camera 102 and a monitoring platform 61;
the thermal imaging camera 102 acquires an infrared image of a monitored area, and a plurality of thermal imaging cameras 102 can form a large-range monitored area according to the visible angle gamma of the thermal imaging cameras;
the monitoring platform 61 acquires an infrared image of a monitoring area of the thermal imaging camera 102 and acquires first longitude and latitude information of the position of the thermal imaging camera 102; acquiring coordinate information of the fire point in the infrared image; according to the first longitude and latitude information and the coordinate information, the second longitude and latitude information of the fire point is determined, and the monitoring platform 61 can send alarm information to relevant fire responsible persons in real time through a communication network, so that the responsible persons can know the condition of the fire point in time.
Through the system, the thermal imaging camera 102 can identify the fire point, the monitoring platform 61 determines the longitude and latitude information of the fire point through the longitude and latitude information of the thermal imaging camera 102 and the position of the fire point in the infrared image, the problem that the fire point cannot be accurately found and positioned by image intelligent identification is solved, and the timeliness and the accuracy of fire point identification are improved.
In an embodiment of straw burning alarm, fig. 7 is a block diagram of a straw burning alarm system according to an embodiment of the present invention, and as shown in fig. 7, the system includes: a thermal imaging camera 102, a software platform 71, an alarm handling client 72 and alarm handling handset software 73;
the thermal imaging camera 102 is mounted at a high point in the center of the field. Detecting the temperature condition of the monitored area in real time by using a temperature sensor in the thermal imaging camera 102, wherein the thermal imaging camera 102 is connected to the software platform 71;
the software platform 71 is responsible for managing the monitoring thermal imaging camera 102, receiving the infrared image of the straw burning detected by the thermal imaging camera 102 and the latitude and longitude of the thermal imaging camera 102, the software platform 71 operating a positioning algorithm to determine the position of the straw burning generation place according to the infrared image and the latitude and longitude of the thermal imaging camera 102, fig. 8 is a flow chart of the software platform for positioning the straw burning generation place according to the embodiment of the invention, as shown in fig. 8, the method comprises the following steps:
step S801, the user configures the position of each thermal imaging camera 102 on the vector map in the software platform 71, and sets the height of the thermal imaging camera 102, where the longitude, latitude, and height of the thermal imaging camera 102 need to be clear, because this affects the final alarm positioning;
step S802, the software platform 71 receives a fire alarm detected by the thermal imaging camera 102, and the alarm information includes a snapshot of the thermal imaging camera 102, a camera pitch angle alpha, a camera cruise angle beta and a camera visible angle gamma during the fire detection;
step S803, the software platform 71 calculates the angle deviation of the fire point relative to the point where the thermal imaging camera 102 is located by utilizing the cruising angle of the camera, the abscissa of the fire point in the snapshot and the width of the snapshot;
step S804, the software platform 71 calculates the distance between the fire point and the point where the thermal imaging camera 102 is located by utilizing the height of the camera, the pitching angle of the camera, the vertical coordinate of the fire point in the picture and the height of the snapshot;
in step S805, the software platform 71 calculates the specific longitude and latitude of the fire point by using the longitude and latitude of the thermal imaging camera 102 and the angle deviation and distance calculated in S803 and S804.
The alarm processing client 72 is installed on a computer of a monitoring room, an operator on duty can obtain the latest alarm information at any time, and the alarm processing client 72 is also connected to the software platform 71;
the alarm disposal mobile phone software 73 is installed on a mobile phone of a farmland district responsible person, the district responsible person can acquire straw burning alarm information in a responsible area in real time, and the alarm disposal mobile phone software 73 is also connected to the software platform 71.
In this embodiment, fig. 9 is a flowchart of a straw burning alarm according to an embodiment of the present invention, as shown in fig. 9, including the following steps:
step S901, the thermal imaging camera 102 shoots images and sends fire alarms to the software platform 71, the thermal imaging camera 102 conducts 360-degree cruise, and fire alarm information comprises alarm snapshot images, coordinates of fire points in the images, camera pitching angles, camera cruising angles and camera visual field angles;
step S902, the software platform 71 calculates the specific position of the fire point and pushes the position to the warning processing client 72;
step S903, after the alarm processing client 72 receives the alarm information, the alarm point position is displayed on a computer, so that the operator on duty can conveniently confirm the alarm;
step S904, confirming the straw burning event, checking the warning picture and the video of the thermal imaging camera 102 by the staff on duty, if confirming that the straw burning event occurs, informing the responsible person of the corresponding farmland district, or selecting the staff needing to be forwarded by the warning processing client 72, and pushing the warning information to the corresponding warning disposal mobile phone software 73 by the software platform 71;
step S905, the farmland parcel leader checks the alarm received by the alarm disposal mobile phone software 73, goes to the site to dispose the straw burning event, takes a picture of the farmland parcel leader to record the processing result after disposing the straw burning site, and transmits the processing result back to the software platform 71 through the alarm disposal mobile phone software 93 to complete the service closed loop.
Through the steps S901 to S905, compared with the mode identification technology in the prior art, the infrared positioning technology is used to detect the fire point of straw burning in real time, and perform real-time geographic positioning on the fire, and finally the alarm processing client 72 or the alarm handling mobile phone software 73 notifies the straw burning event district management personnel to perform field processing, thereby completing event closed loop.
In one embodiment, a computer device is provided, which may be a terminal. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a method for locating a fire point as described above. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on a shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, implements a method for locating a fire point provided by the above embodiments.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A method of locating a fire point, the method comprising:
acquiring an infrared image of a monitoring area of a thermal imaging camera, and acquiring first longitude and latitude information of the position of the thermal imaging camera;
acquiring coordinate information of the fire point in the infrared image;
determining second longitude and latitude information of the fire point according to the first longitude and latitude information and the coordinate information, wherein the second longitude and latitude information comprises the following steps:
acquiring the angle deviation of the fire point according to the cruising angle of the thermal imaging camera, the abscissa of the fire point in the infrared image and the width value of the infrared image;
and determining second longitude and latitude information of the fire point according to the first longitude and latitude information, the angle deviation and the coordinate information.
2. The method of claim 1, wherein prior to acquiring the infrared image of the monitored area of the thermal imaging camera, the method comprises:
the method comprises the steps of obtaining a temperature value of a temperature sensor, generating an infrared starting signal under the condition that the temperature value exceeds a preset threshold value, wherein the infrared starting signal indicates that a thermal imaging camera is started, and the thermal imaging camera obtains an infrared image of a monitoring area.
3. The method of claim 1, wherein determining the second latitude and longitude information of the fire point comprises:
acquiring a distance value of the fire point according to the height value and the pitching angle of the thermal imaging camera, the ordinate of the fire point in the infrared image and the height value of the infrared image;
and determining second longitude and latitude information of the fire point according to the distance value, the first longitude and latitude information, the angle deviation and the coordinate information.
4. The method of claim 3, wherein after determining the second latitude and longitude information of the fire point, the method comprises:
and generating and sending alarm information, wherein the alarm information carries the second longitude and latitude information.
5. A fire point locating device, said device comprising:
the system comprises a first acquisition module, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for acquiring an infrared image of a monitoring area of a thermal imaging camera and acquiring first longitude and latitude information of the position of the thermal imaging camera;
the second acquisition module is used for acquiring the coordinate information of the fire point in the infrared image;
the positioning module is used for determining second longitude and latitude information of the fire point according to the first longitude and latitude information and the coordinate information, and comprises the following steps:
the positioning module acquires the angle deviation of the fire point according to the cruising angle of the thermal imaging camera, the abscissa of the fire point in the infrared image and the width value of the infrared image;
and the positioning module determines second longitude and latitude information of the fire point according to the first longitude and latitude information, the angle deviation and the coordinate information.
6. The apparatus of claim 5, further comprising:
and the warning module is used for generating and sending warning information, and the warning information carries the second longitude and latitude information.
7. A system for locating a fire point, the system comprising: a thermal imaging camera and a monitoring platform;
the thermal imaging camera acquires an infrared image of a monitored area;
the monitoring platform acquires an infrared image of a monitoring area of the thermal imaging camera and first longitude and latitude information of the position of the thermal imaging camera; acquiring coordinate information of the fire point in the infrared image; determining second longitude and latitude information of the fire point according to the first longitude and latitude information and the coordinate information, wherein the second longitude and latitude information comprises the following steps:
the monitoring platform acquires the angle deviation of the fire point according to the cruising angle of the thermal imaging camera, the abscissa of the fire point in the infrared image and the width value of the infrared image;
and the monitoring platform determines second longitude and latitude information of the fire point according to the first longitude and latitude information, the angle deviation and the coordinate information.
8. The system of claim 7, wherein the monitoring platform generates and sends an alert message, the alert message carrying the second longitude and latitude information.
9. The system of claim 7, wherein the monitoring platform is configured to obtain a temperature value of the temperature sensor before obtaining the infrared image of the monitoring area of the thermal imaging camera, and generate an infrared turn-on signal if the temperature value exceeds a preset threshold, the infrared turn-on signal indicating that the thermal imaging camera is turned on, and the thermal imaging camera obtaining the infrared image of the monitoring area.
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| CN103399319A (en) * | 2013-07-22 | 2013-11-20 | 山东神戎电子股份有限公司 | Space target positioning method applicable to video monitoring |
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| CN110320522A (en) * | 2018-03-30 | 2019-10-11 | 浙江宇视科技有限公司 | Fire source monitoring method, device and system |
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| US10511950B2 (en) * | 2006-05-16 | 2019-12-17 | RedSky Technologies, Inc. | Method and system for an emergency location information service (E-LIS) for Internet of Things (IoT) devices |
| CN102280005B (en) * | 2011-06-09 | 2014-10-29 | 广州飒特红外股份有限公司 | Early warning system for fire prevention of forest based on infrared thermal imaging technology and method |
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| CN103399319A (en) * | 2013-07-22 | 2013-11-20 | 山东神戎电子股份有限公司 | Space target positioning method applicable to video monitoring |
| CN107316012A (en) * | 2017-06-14 | 2017-11-03 | 华南理工大学 | The fire detection and tracking of small-sized depopulated helicopter |
| CN110320522A (en) * | 2018-03-30 | 2019-10-11 | 浙江宇视科技有限公司 | Fire source monitoring method, device and system |
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