CN111157119B - Temperature monitoring method, thermal imaging scanning monitoring device and system - Google Patents
Temperature monitoring method, thermal imaging scanning monitoring device and system Download PDFInfo
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Abstract
The application provides a temperature monitoring method, thermal imaging scanning monitoring devices and system, and the method is applied to the control part that the thermal imaging scanning monitoring devices include, and the thermal imaging scanning monitoring devices are used for carrying out temperature monitoring to the monitoring area, and still include the thermal imaging component, and the method includes: controlling a thermal imaging element to detect a plurality of sub-areas in a monitoring area one by one, and receiving current temperature data of the sub-areas detected by the thermal imaging element; and monitoring the temperature of the monitoring area according to the current temperature data of the sub-area. The thermal imaging element is used for detecting a plurality of sub-areas in the monitoring area one by one, so that the temperature monitoring of the monitoring area can be realized. Through the monitoring mode of scanning formula like this, can divide into the temperature monitoring to an area and monitor many times to the realization can greatly reduce the reliance to infrared thermal imaging device's resolution ratio to the temperature monitoring in area, thereby reduces the cost that uses infrared thermal imaging mode to carry out ambient temperature monitoring to the area by a wide margin.
Description
Technical Field
The application relates to the field of temperature sensing, in particular to a temperature monitoring method, a thermal imaging scanning monitoring device and a thermal imaging scanning monitoring system.
Background
At present, the monitoring of the environmental temperature of the area is beneficial to finding out the fire hazard in time and reducing the loss caused by the fire as much as possible. In the existing environment temperature monitoring mode, a temperature sensing cable is adopted to monitor the temperature of an area, and an infrared thermal imaging device is also used to monitor the temperature of the area.
However, when the ambient temperature in the area is monitored by using the infrared thermal imaging method in the prior art, the resolution requirement on the infrared thermal imaging device is high in order to ensure the accuracy of temperature monitoring and the accuracy of positioning. Therefore, when extensive temperature monitoring of the area is required, the cost is high.
Disclosure of Invention
An object of the embodiments of the present application is to provide a temperature monitoring method, a thermal imaging scanning monitoring apparatus and a system, so as to greatly reduce the cost of performing ambient temperature monitoring on an area by using an infrared thermal imaging method.
In order to achieve the above object, embodiments of the present application are implemented as follows:
in a first aspect, an embodiment of the present application provides a temperature monitoring method applied to a control portion included in a thermal imaging scanning monitoring apparatus, where the thermal imaging scanning monitoring apparatus is configured to perform temperature monitoring on a monitored area and further includes a thermal imaging element, and the method includes: controlling the thermal imaging element to detect a plurality of sub-areas in the monitoring area one by one, and receiving current temperature data of the sub-areas detected by the thermal imaging element; and monitoring the temperature of the monitoring area according to the current temperature data of the sub-area.
And detecting a plurality of sub-areas in the monitoring area one by using a thermal imaging element to obtain the current temperature data of the sub-areas, thereby realizing the temperature monitoring of the monitoring area. By the scanning type monitoring mode, the temperature monitoring of one area can be divided into multiple times of monitoring, so that the temperature monitoring of the area is realized. The method can greatly reduce the dependence on the resolution of the infrared thermal imaging device, thereby greatly reducing the cost of monitoring the ambient temperature of the area by using the infrared thermal imaging method.
With reference to the first aspect, in a first possible implementation manner of the first aspect, the performing temperature monitoring on the monitored area according to the current temperature data of the sub-area includes: judging whether a sub-area with current temperature data exceeding the fire temperature value exists in the monitoring area; and if so, carrying out fire early warning.
When detecting that the sub-area with the current temperature data exceeding the fire temperature value exists, the fire disaster early warning can be carried out, so that the early warning can be timely carried out when a fire disaster happens, the fire spread can be avoided as much as possible, and the loss is reduced.
With reference to the first aspect, in a second possible implementation manner of the first aspect, the performing temperature monitoring on the monitored area according to the current temperature data of the sub-area includes: determining local temperature data of the corresponding sub-region according to the current temperature data of the sub-region; and monitoring the temperature of the sub-region according to the current temperature data and the local temperature data of the sub-region.
The local temperature data of the sub-region is determined, and the current temperature data and the local temperature data of the same sub-region are compared and analyzed, so that the temperature monitoring of the sub-region can be facilitated.
With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, determining local temperature data of a corresponding sub-region according to current temperature data of the sub-region includes: determining the corresponding sub-region according to positioning information associated with the current temperature data, wherein the positioning information is used for representing the sub-region from which the current temperature data is obtained; and determining local temperature data of the corresponding sub-area.
Through the positioning information associated with the current temperature data, the corresponding sub-region can be determined, so that the local temperature data corresponding to the sub-region is determined. The method can simply, conveniently, accurately and efficiently determine the local temperature data of the corresponding sub-area.
With reference to the second possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the monitoring the temperature of the sub-region according to the current temperature data and the local temperature data of the sub-region includes: determining a temperature difference value between the current temperature data and the local temperature data of the same sub-region; and when the temperature difference value does not exceed a preset difference value, updating the local temperature data according to the current temperature data.
The temperature difference between the current temperature data and the local temperature data of the same sub-area is determined, the temperature difference is compared with a preset difference, if the temperature difference does not exceed the preset difference, the temperature change is within a normal range, the local temperature data are updated according to the current temperature data, the local temperature data can be continuously updated, and the temperature change value of the area monitored each time can be accurately determined.
With reference to the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, when the temperature difference exceeds a preset difference, a suspicious sub-region where the temperature difference exceeds the preset difference in the temperature monitoring of the monitored region at this time is recorded; determining suspicious subregions in the previous temperature monitoring of the monitoring region; and determining whether to carry out fire early warning according to the suspicious subarea in the current temperature monitoring and the suspicious subarea in the previous temperature monitoring of the monitoring area.
When the temperature difference value of one sub-region exceeds a preset difference value, the region is marked as a suspicious sub-region, and whether fire early warning is needed or not (namely, a fire possibly appears is prompted) can be determined through the suspicious sub-region in the current temperature monitoring and the suspicious sub-region in the previous temperature monitoring. Whether the situation is stable or not can be determined by analyzing the suspicious subregion in the current temperature monitoring and the suspicious subregion in the previous temperature monitoring, so that the early warning accuracy is improved, and the false alarm is avoided as far as possible.
With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, determining whether to perform fire early warning according to a suspicious sub-region in the current temperature monitoring and a suspicious sub-region in the previous temperature monitoring of the monitoring region includes: and when the preset number of suspicious sub-regions in the previous temperature monitoring exist in the suspicious sub-regions in the current temperature monitoring and the number of the suspicious sub-regions in the current temperature monitoring is larger than that of the suspicious sub-regions in the previous temperature monitoring, determining to perform fire early warning.
The suspicious subregion in the previous temperature monitoring of presetting quantity exists in the suspicious subregion in this temperature monitoring, and when this suspicious subregion's quantity was greater than the suspicious subregion's of previous time quantity, it says that suspicious subregion is diffusing gradually, it is the premonition before the fire very probably (not reach the early warning temperature value) to catch fire early warning this moment, can improve the accuracy of early warning, be favorable to as far as possible before the conflagration takes place to be about to the conflagration to be destroyed in sprouting, thereby reduce as far as possible and avoid the loss that the conflagration brought even.
In a second aspect, an embodiment of the present application provides a thermal imaging scanning monitoring apparatus, configured to perform temperature monitoring on a monitored area, and including a control portion and a thermal imaging element connected thereto, where the control portion is configured to perform the temperature monitoring method according to any one of the first aspect or possible implementations of the first aspect; the thermal imaging element is used for detecting the sub-area in the monitoring area under the control of the control part and sending the detected temperature data to the control part.
In a third aspect, an embodiment of the present application provides a thermal imaging scanning monitoring system, which includes an upper computer and at least one thermal imaging scanning monitoring device described in the second aspect, where the thermal imaging scanning monitoring device is in communication connection with the upper computer.
In a fourth aspect, an embodiment of the present application provides a temperature monitoring method, which is applied to the upper computer in the thermal imaging scanning monitoring system in the third aspect, and the method includes: receiving the current temperature data of a plurality of sub-areas sent by the control part; determining a plurality of current temperature data belonging to the same sub-region, wherein each current temperature data corresponds to each temperature monitoring of the sub-region; and fitting the current temperature data with a preset combustion curve to determine whether the sub-area carries out fire early warning.
And fitting the temperature data of the sub-area for a plurality of times in succession with one or more preset fuel consumption curves to determine whether the condition of the area is likely to generate combustion fire. Thus, it is possible to predict a place where a fire is likely to occur in advance, and to avoid the occurrence of a fire as much as possible.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic view of a thermal imaging scanning monitoring system according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of a thermal imaging scanning monitoring apparatus according to an embodiment of the present application.
Fig. 3 is a flowchart of a temperature monitoring method applied to a control portion according to an embodiment of the present disclosure.
Fig. 4 is a schematic diagram of a thermal imaging scanning monitoring apparatus for monitoring temperature of a monitored area according to an embodiment of the present application.
Fig. 5 is a flowchart of a temperature monitoring method applied to an upper computer according to an embodiment of the present application.
Icon: 10-a thermal imaging scanning monitoring system; 11-an upper computer; 12-a thermal imaging scanning monitoring device; 121-a control section; 1211-main control chip; 1212-a horizontal drive mechanism; 1213-vertical drive mechanism; 122-a thermal imaging element; 123-a display; 124-a power supply; 125-communication unit.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
Referring to fig. 1, fig. 1 is a schematic diagram of a thermal imaging scanning monitoring system 10 according to an embodiment of the present disclosure.
In this embodiment, the thermal imaging scanning monitoring system 10 may include an upper computer 11 and at least one thermal imaging scanning monitoring device 12. The upper computer 11 is connected to the thermal imaging scanning monitoring device 12, and can communicate with the thermal imaging scanning monitoring device 12 (for example, receive monitoring data sent by the thermal imaging scanning monitoring device 12, or send a control instruction to adjust the operation of the thermal imaging scanning monitoring device 12, etc.).
In this embodiment, the upper computer may be a terminal device, such as a smart phone, a laptop, a personal computer, a tablet computer, and the like, which is not limited herein.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a thermal imaging scanning monitoring apparatus 12 according to an embodiment of the present disclosure. In the present embodiment, the thermal imaging scanning monitoring device 12 may include a control section 121, a thermal imaging element 122, and a display 123. The control unit 121 is connected to the thermal imaging element 122, and controls the operation of the thermal imaging element 122. The control unit 121 may be connected to the display 123 to control display on the display 123.
Illustratively, the control part 121 may include a main control chip 1211, a horizontal driving mechanism 1212, and a vertical driving mechanism 1213. The main control chip 1211 can be connected to the horizontal driving mechanism 1212 and the vertical driving mechanism 1213, respectively; and thermal imaging element 122 may be coupled to a horizontal drive mechanism 1212 and a vertical drive mechanism 1213.
In this embodiment, the main control chip 1211 may be a single chip, such as a STC51 series single chip, an MSP430 single chip, and the like, and is not limited herein.
In this embodiment, the horizontal driving mechanism 1212 may include a first motor and a first transmission mechanism, the first motor (may be connected through a driving circuit of the first motor) is connected to the main control chip 1211, and the first motor may be connected to the thermal imaging element 122 through the first transmission mechanism. Therefore, the main control chip 1211 controls the first motor to rotate, so as to drive the first transmission mechanism to reciprocate along the first direction, and the thermal imaging element 122 can reciprocate along the first direction with the first transmission mechanism, so that the main control chip 1211 controls the thermal imaging element 122 to reciprocate along the first direction.
In this embodiment, the vertical driving mechanism 1213 may include a second motor and a second transmission mechanism, the second motor (may be connected through a driving circuit of the second motor) is connected to the main control chip 1211, and the second motor may be connected to the thermal imaging element 122 through the second transmission mechanism. Therefore, the main control chip 1211 controls the second motor to rotate, so as to drive the second transmission mechanism to reciprocate along the line in the second direction, and the thermal imaging element 122 can reciprocate along the line in the second direction with the second transmission mechanism, so that the main control chip 1211 controls the thermal imaging element 122 to reciprocate along the line in the second direction.
The first direction and the second direction may be perpendicular to each other, but are not limited thereto. In other realizable manners, when the temperature of the monitoring area is monitored, the first direction and the second direction may also be at other angles, such as 60 degrees, 120 degrees, 45 degrees, and the like, which is not limited herein.
In this embodiment, the thermal imaging element 122 may be a thermal imaging lens, and since there is no strict requirement on the resolution of the thermal imaging element 122, the thermal imaging lens with a cost within a controllable range may be selected according to the actual situation, thereby greatly reducing the cost of the thermal imaging scanning monitoring apparatus.
In the present embodiment, the display 123 may be used to display the temperature monitored by the thermal imaging element 122, or display other information (for example, when a plurality of sub-regions of the monitoring region are numbered, the number of the currently monitored sub-region may be displayed, etc.). For example, the display 123 may be an LCD display, an LED display, etc., and is not limited herein, depending on the actual needs.
Of course, the thermal imaging scanning monitoring device 12 may also include a power supply 124 to power other portions of the thermal imaging scanning monitoring device 12 (the main control chip 1211, the thermal imaging element 122, the horizontal driving mechanism 1212, the vertical driving mechanism 1213, and the display 123). The thermal imaging scanning monitoring device 12 may further include a communication unit 125 for communicating with the upper computer 11.
It should be noted that, in the embodiment of the present application, a case where one thermal imaging element 122 is included in the thermal imaging scanning monitoring apparatus 12 is taken as an example for description, but should not be considered as a limitation of the present application, in some realizable manners, a plurality of thermal imaging elements 122 may be included in the thermal imaging scanning monitoring apparatus 12, so as to implement multi-angle monitoring on the same area, so as to improve the monitoring accuracy; or multi-region parallel monitoring is realized, and the monitoring efficiency is improved.
For example, a thermal imaging scanning monitoring apparatus 12 includes three thermal imaging elements 122, each thermal imaging element 122 monitors the same area, one of the thermal imaging elements 122 monitors abnormal temperature, and a fire may occur, but the temperatures monitored by the other two thermal imaging elements 122 are normal values, so that it can be preliminarily determined that the thermal imaging element 122 monitoring abnormal temperature has a fault, and thus false alarm can be prevented. As another example, another thermal imaging scanning monitoring device 12 includes two thermal imaging elements 122, each thermal imaging element 122 monitors adjacent regions, enabling parallel monitoring, while monitoring both regions, thus improving monitoring efficiency.
Therefore, the number of thermal imaging elements and the monitoring mode (simultaneously monitoring one area or monitoring multiple areas in parallel) included in the thermal imaging scanning monitoring device should not be considered as a limitation of the present application.
In this embodiment, the temperature monitoring of the monitoring area can be realized by the thermal imaging scanning monitoring apparatus (taking a thermal imaging scanning monitoring apparatus including a thermal imaging lens as an example) provided in this embodiment of the present application, by operating the temperature monitoring method provided in this embodiment of the present application. Hereinafter, the process of the thermal imaging scanning monitoring device operating the temperature monitoring method will be described in detail.
Referring to fig. 3, fig. 3 is a flowchart of a temperature monitoring method applied to a control portion according to an embodiment of the present disclosure. In this embodiment, the temperature monitoring method may include: step S10 and step S20.
In order to realize the temperature monitoring of the monitoring area by the infrared thermal imaging method at low cost, in the embodiment, the temperature monitoring of the monitoring area may be performed by the thermal imaging scanning monitoring device (or may be performed by the control part of the thermal imaging scanning monitoring device). Before describing step S10, the monitoring area is described to facilitate understanding of the present scheme.
Referring to fig. 4, fig. 4 is a schematic diagram illustrating a thermal imaging scanning monitoring apparatus for monitoring temperature of a monitored area according to an embodiment of the present disclosure. In this embodiment, the monitoring region may be divided into a plurality of sub-regions (each sub-region may be the same size, or different sizes, and is not limited), and the size of each sub-region does not exceed the size of the monitoring range of the thermal imaging element of the thermal imaging scanning monitoring apparatus.
Based on the temperature monitoring of the monitored area, the control portion of the thermal imaging scan monitoring device may perform step S10.
Step S10: and controlling the thermal imaging element to detect a plurality of sub-areas in the monitoring area one by one, and receiving the current temperature data of the sub-areas detected by the thermal imaging element.
In this embodiment, the control portion may control the thermal imaging element to detect the plurality of sub-regions in the monitoring region one by one.
For example, the thermal imaging element is controlled to monitor the plurality of sub-regions one by one, and the monitoring may be performed sequentially, for example, from left to right, from top to bottom, along an "S" shape, and the like.
In the present embodiment, the thermal imaging scanning monitoring device including one thermal imaging element is used to monitor the temperature of the monitoring area, but the present application is not limited thereto. In other realizable manners, a thermal imaging scanning monitoring device including a plurality of thermal imaging elements may also be used to perform temperature monitoring on the monitoring area (for example, a plurality of thermal imaging elements perform temperature monitoring on the same sub-area, or a plurality of thermal imaging elements perform temperature monitoring on a plurality of sub-areas, it should be noted that the number of thermal imaging elements is generally smaller than the number of sub-areas). Therefore, the specific manner of monitoring the monitored area by the thermal imaging element herein should not be considered as limiting the present application.
Here, step S10 will be described by taking as an example a process in which the control unit of the thermal imaging scan monitoring apparatus controls the thermal imaging element to monitor one sub-region.
In order to realize the positioning of the monitored sub-region, the thermal imaging scanning monitoring device can determine the currently monitored sub-region of the thermal imaging element through the motion amplitude of the horizontal driving mechanism and the vertical driving mechanism. Specifically, the control part may receive rotation information fed back by the first motor and the second motor, and determine the rotation amplitude of the motors. Based on the rotation amplitude of the first motor and the rotation amplitude of the second motor, a preset corresponding relationship is combined (the preset corresponding relationship is used for determining the currently monitored sub-region through the rotation amplitude of the motor, for example, the preset corresponding relationship may be a relationship between the rotation amplitude of the motor and the position of the sub-region, and the position of the sub-region may be bound through the number of the sub-region, so the preset corresponding relationship may also be expressed as a corresponding relationship between the rotation amplitude of the motor and the number of the sub-region), and a target sub-region (or the position, the number and the like of the sub-region) currently monitored by the thermal imaging element may be determined.
After the control part determines the target sub-region currently monitored by the thermal imaging element, the control part may send positioning information (used for determining the target sub-region) to the thermal imaging element, so that when the thermal imaging element detects the target sub-region to acquire current temperature data, the thermal imaging element may associate the positioning information used for determining the target sub-region with the current temperature data, so that the control part may determine to which sub-region the current temperature data belongs. Therefore, the positioning of the sub-areas can be realized, the current temperature data of each area can be displayed integrally, and the temperature monitoring of the whole monitoring area is realized.
In addition to the above-mentioned manner in which the control unit transmits the positioning information of the specified target sub-region to the thermal imaging element, the control unit may associate the positioning information with the current temperature data of the target sub-region when receiving the current temperature data obtained by monitoring the target sub-region transmitted by the thermal imaging element, so as to position the sub-region in the present embodiment, thereby similarly positioning the sub-region.
In addition, in order to realize the positioning of the sub-region, the control part may further determine the positioning information through the horizontal driving mechanism and the vertical driving mechanism of the control part when the sub-region to which the current temperature data belongs needs to be determined, so as to determine the target sub-region to which the current temperature data belongs.
The positioning of the sub-region can be achieved in any of the ways, but the ways of achieving the positioning of the sub-region are far more than the listed ways, and therefore, the application should not be considered as limited herein. As for the manner in which the control section transmits the positioning information to the thermal imaging element, it is applicable to a case in which the thermal imaging scanning monitoring apparatus includes a plurality of thermal imaging elements in order to reduce the processing load of the control section.
After the thermal imaging element receives the monitoring instruction, the temperature of the sub-region can be monitored, and the current temperature data of the sub-region can be obtained. After acquiring the current temperature data of the sub-region, the thermal imaging element may send the current temperature data to the control portion (in a manner that the control portion sends the positioning information to the thermal imaging element, the thermal imaging element needs to associate the positioning information with the current temperature data and send the associated positioning information to the control portion).
The control portion may receive current temperature data of the sub-region detected by the thermal imaging element (when the current temperature data sent by the thermal imaging element is not associated with the positioning information, the control portion may also associate the current temperature data of the sub-region with the positioning information of the sub-region).
In this way, the control portion can receive the current temperature data of each sub-region in the monitored region detected by the thermal imaging element.
In this embodiment, the control unit may execute step S20 after receiving the current temperature data of the sub-area in the monitoring area detected by one thermal imaging element, or execute step S20 after receiving the current temperature data of a plurality of sub-areas or all sub-areas in the monitoring area. In this embodiment, the control unit executes step S20 after receiving the current temperature data of one sub-region, but the invention is not limited thereto.
Step S20: and monitoring the temperature of the monitoring area according to the current temperature data of the sub-area.
In order to accurately monitor the temperature of the sub-region, in this embodiment, the control portion may determine the local temperature data of the corresponding sub-region according to the current temperature data of the sub-region.
For example, the control unit may determine positioning information associated with the current temperature data, that is, the positioning information is used to determine the sub-area to which the current temperature data belongs. The control part can determine the corresponding sub-area (namely the sub-area to which the current temperature data belongs) through the determined positioning information. After the corresponding sub-region is determined, the control unit may further determine local temperature data of the corresponding sub-region from the local temperature data of the plurality of sub-regions. Therefore, the local temperature data of the corresponding sub-area can be simply, conveniently, accurately and efficiently determined.
After the local temperature data of the corresponding sub-area is determined, the control part can monitor the temperature of the sub-area according to the current temperature data and the local temperature data of the sub-area.
For example, the control device may determine a temperature difference between current temperature data and local temperature data for the same sub-region.
When the temperature monitoring of the thermal imaging scanning monitoring device on the monitoring area is used for fire early warning, the temperature rise needs to be noticed, and the temperature drop is relatively safe, so that resources do not need to be spent to pay special attention. Therefore, in order to improve the efficiency of the temperature monitoring method, in this embodiment, the control portion may compare the current temperature data with the local temperature data before determining the temperature difference between the current temperature data and the local temperature data of the same sub-region, and when the current temperature data is higher than the local temperature data, the control portion may determine the temperature difference between the current temperature data and the local temperature data of the same sub-region. When the current temperature data is not higher than the local temperature data, the temperature difference between the current temperature data and the local temperature data does not need to be calculated.
In this way, some situations where the temperature difference does not need to be determined can be filtered before calculating the temperature difference between the current temperature data and the local temperature data of the same sub-region, so as to improve the operation efficiency of the temperature monitoring method.
Of course, after determining the temperature difference between the current temperature data and the local temperature data of the same sub-region (which may be the case where the current temperature data is greater than the local temperature data, or the case where it is not necessary to determine the size of the current temperature data and the local temperature data in some other manners), the control portion may compare the temperature difference with a preset difference.
When the temperature difference does not exceed the preset difference, the temperature change can be shown to be within the normal range, and excessive attention can be omitted. The control section may update the local temperature data based on the current temperature data, for example, replace the local temperature data with the current temperature data as new local temperature data. Therefore, the local temperature data can be continuously updated, and the temperature change value of the area monitored each time can be accurately determined.
It should be noted that, when the current temperature data is not higher than the local temperature data, the local temperature data may also be updated according to the current temperature data, so as to continuously update the local temperature data. In addition, in this embodiment, the initial value of the local temperature data may be set as a normal ambient temperature value of the monitoring area, and may be continuously updated in the subsequent process, but should not be considered as a limitation to the present application.
When the temperature difference exceeds the preset difference, it can be said that the temperature variation does not fall within the normal range, and some suspicious situations may exist, such as the precursor of fire. At this time, the control part may record a suspicious sub-region in the temperature monitoring of the monitored region at this time, where the temperature difference exceeds a preset difference (taking a step of the temperature monitoring method executed after the control part receives the current temperature data of one sub-region as an example, that is, record the sub-region monitored at this time as a suspicious sub-region).
After the control part determines the area as a suspicious subarea, the temperature value can be compared with a fire temperature value. It should be noted that the ignition temperature value here may be ignition temperature values of various objects. For example, the monitoring area is a forest area, plastics, dry wood branches, fallen hay, paper scraps and the like may exist in the forest area, and the burning points of the plastics, the dry wood branches, the fallen hay and the paper scraps are different. The values of the firing temperature here can therefore also differ in different sub-zones.
When the current temperature data exceeds the fire temperature value, the control part can carry out fire early warning. It should be noted that, comparing the current temperature data with the ignition temperature value is not limited to the case where the temperature difference is determined to be higher than the preset difference, and may also be performed in other cases (for example, comparing with the ignition temperature value when the current temperature data is received), and therefore, the present application should not be considered as limited herein.
In the case that the current temperature data does not exceed the fire temperature value, the control unit may record the sub-region as a suspicious sub-region.
For example, after the control unit records the corresponding sub-region as a suspicious sub-region according to the current temperature data, the control unit may further determine the suspicious sub-region recorded in the temperature monitoring of the monitored region this time.
It should be noted that "determining a suspicious sub-region recorded in the current temperature monitoring of the monitored region" here may be performed after determining the sub-region as the suspicious sub-region, so that it may be determined in time that the suspicious sub-region recorded at present is obtained in the current temperature monitoring of the monitored region; or after the temperature monitoring of all sub-areas in the monitored area is completed, the temperature monitoring may be performed so as to comprehensively determine the condition of suspicious sub-areas in the monitored area, which should not be regarded as a limitation of the present application.
And the control part can determine the suspicious subarea in the previous (or multiple) temperature monitoring of the monitoring area, so that the control part can determine whether to carry out fire early warning according to the suspicious subarea determined in the current (or multiple) temperature monitoring of the monitoring area.
For example, the control unit may compare the suspicious sub-region determined in the current temperature monitoring of the monitoring region (hereinafter referred to as the current suspicious sub-region) with the suspicious sub-region determined in the previous (or multiple) temperature monitoring of the monitoring region (hereinafter referred to as the previous suspicious sub-region).
Since a fire usually occurs before a period (a period of germination) during which no or very little fire occurs. During this period, the portion with a high temperature transfers heat to the surroundings, and the temperature of the surroundings gradually rises and the range gradually expands, thereby forming a spreading potential. Therefore, in order to suppress the fire as much as possible at the time of germination, the control unit may determine whether the present suspicious subregion has a portion overlapping with the previous suspicious subregion, and whether the range of the present suspicious subregion is enlarged as compared with the range of the previous suspicious subregion. The determination can be made here by the number of suspicious subregions. For example, the number of suspicious sub-regions at this time is greater than the number of suspicious sub-regions at the previous time, which indicates that the range of the suspicious sub-regions is spreading.
Of course, in order to further improve the accuracy of the determination, the control unit may also compare the location of the suspicious sub-region in the monitored region at this time with the location of the suspicious sub-region in the monitored region at the previous time, so as to accurately determine whether the range of the suspicious sub-region is enlarged by taking a certain (or multiple) sub-regions as a center. When the range of the suspicious subregion is determined to be enlarged by taking a certain subregion (or a plurality of subregions) as a center, the subregion can be determined to possibly generate a fire, and therefore fire early warning is carried out. Therefore, the accuracy of early warning can be improved, and the fire disaster can be eliminated in the bud as soon as possible before the fire disaster happens, so that the loss caused by the fire disaster is reduced or even avoided as far as possible. And because the sub-areas are positioned, the method is favorable for the workers to arrive at the site as soon as possible and take measures, and is also favorable for reducing or even avoiding the loss caused by fire as far as possible.
In order to further improve the reliability of the temperature monitoring method, in this embodiment, after the control part determines any sub-region as a suspicious sub-region, the strength of temperature monitoring can be improved. For example, the monitoring frequency of the monitored area can be increased, or the suspicious subregion can be monitored with emphasis (increase of the monitoring times, increase of the monitoring frequency or increase of the monitoring time), and the like.
It should be noted that, in this embodiment, in order to reduce the cost of the thermal imaging scanning monitoring apparatus as much as possible, the calculation amount of the control part of the thermal imaging scanning monitoring apparatus may be reduced as much as possible (a main control chip, a module, etc. with slightly lower performance may be used), so that the cost of the control part is reduced. In this embodiment, part or all of the steps of the temperature monitoring method performed by the control unit according to the embodiment of the present application may be performed by the upper computer. For example, the upper computer may control the thermal imaging scanning monitoring device to perform temperature monitoring on the monitored area by issuing a control instruction, and the control part of the thermal imaging scanning monitoring device controls the thermal imaging element to detect the sub-area according to the control instruction to obtain current temperature data of the sub-area, and sends the current temperature data (associated with the positioning information) to the upper computer, and the upper computer processes and stores the current temperature data, and determines whether fire early warning is required or not. Therefore, the present application should not be considered as limited herein.
In addition, the control part of the thermal imaging scanning monitoring device can also store data (including current temperature data and local temperature data of the current time, previous current temperature data and local temperature data and the like during early warning) of fire early warning every time, and can send the data to the upper computer periodically (or quantitatively), so that the upper computer can analyze the data, and the subsequent work of analysis, maintenance, optimization and the like can be facilitated.
In this embodiment, the temperature monitoring method provided in this embodiment of the present application is executed by the upper computer as an example, and some additions are made to the temperature monitoring method. Of course, the method may also be a step of sending the local temperature data of the plurality of sub-areas of the monitoring area, the current temperature data, and the suspicious sub-area data for recording the suspicious sub-areas to the upper computer after the control part executes the temperature monitoring method, so that the upper computer can operate the supplementary part of the temperature monitoring method.
Referring to fig. 5, fig. 5 is a flowchart illustrating a temperature monitoring method applied to an upper computer according to an embodiment of the present disclosure. In this embodiment, the temperature monitoring method applied to the upper computer may include step S100, step S200, and step S300.
In this embodiment, when the thermal imaging detection scanning device monitors the temperature of the monitored area, the current temperature data of the multiple monitored sub-areas (or the corresponding local temperature data and the suspicious sub-area data for recording the suspicious sub-areas) are sent to the upper computer, and the upper computer may execute step S100.
Step S100: and receiving the current temperature data of the plurality of sub-areas sent by the control part.
In this embodiment, the upper computer may receive current temperature data (as well as local temperature data, suspicious sub-region data) of a plurality of sub-regions.
For example, the upper computer may execute step S200 after receiving the current temperature data of each sub-region.
Step S200: and determining a plurality of current temperature data belonging to the same sub-region, wherein each current temperature data represents each temperature monitoring of the sub-region.
In this embodiment, the upper computer may determine, according to the positioning information associated with each piece of current temperature data, a plurality of pieces of current temperature data belonging to the same sub-region.
After determining a plurality of temperature data (i.e., a plurality of current temperature data of different periods) belonging to the same sub-region, the upper computer may execute step S300.
Step S300: and fitting the current temperature data with a preset combustion curve to determine whether the sub-area carries out fire early warning.
For example, the upper computer may match current temperature data in the region according to a preset fire temperature value and a combustion curve corresponding to the fire temperature value to determine whether a potential fire hazard is likely to occur as early as possible.
For example, the upper computer may locate a sub-region to which the current temperature data belongs, and fit the temperature data of the sub-region for a plurality of consecutive times to one or more preset burn-up curves to determine whether a condition of a combustion fire will likely occur in the sub-region. For example, the fire alarm may be performed when the fitting degree reaches a certain value (e.g., 90%), and the highest temperature therein reaches an early-warning temperature value (different from the fire temperature value and smaller than the fire temperature value).
Thus, it is possible to predict a place where a fire is likely to occur in advance, and to avoid the occurrence of a fire as much as possible. Of course, in order to reduce the amount of calculation, the combustion curve may be fitted to the plurality of current temperature data of the suspicious sub-region, which is not limited herein.
And the upper computer is simultaneously connected with the plurality of thermal imaging scanning monitoring devices, and when the plurality of thermal imaging scanning monitoring devices can monitor the same monitoring area, in order to avoid misinformation as far as possible, the upper computer can analyze according to the monitoring data of the plurality of thermal imaging scanning monitoring devices, so as to eliminate the condition of data distortion caused by the fault of the thermal imaging scanning monitoring devices as far as possible, and avoid misinformation as far as possible.
In addition, the upper computer can determine the area where the fire easily occurs by analyzing the related data of the fire early warning which occurs for a plurality of times, so that the temperature monitoring strategy of the area where the fire easily occurs in the monitoring area is adjusted as far as possible, and the quality and the efficiency of temperature monitoring are improved as far as possible.
In summary, the embodiment of the present application provides a temperature monitoring method, a thermal imaging scanning monitoring device and a system, which are applied to a control portion included in the thermal imaging scanning monitoring device, the thermal imaging scanning monitoring device is used for monitoring the temperature of a monitoring area, and further includes a thermal imaging element, the method includes: controlling the thermal imaging element to detect a plurality of sub-areas in the monitoring area one by one, and receiving current temperature data of the sub-areas detected by the thermal imaging element; and monitoring the temperature of the monitoring area according to the current temperature data of the sub-area. And detecting a plurality of sub-areas in the monitoring area one by using a thermal imaging element to obtain the current temperature data of the sub-areas, thereby realizing the temperature monitoring of the monitoring area. By the scanning type monitoring mode, the temperature monitoring of one area can be divided into multiple times of monitoring, so that the temperature monitoring of the area is realized. The method can greatly reduce the dependence on the resolution of the infrared thermal imaging device, thereby greatly reducing the cost of monitoring the ambient temperature of the area by using the infrared thermal imaging method.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
In addition, units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Furthermore, the functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (3)
1. A temperature monitoring method is applied to a control part included in a thermal imaging scanning monitoring device, the thermal imaging scanning monitoring device is used for monitoring the temperature of a monitoring area and further comprises a thermal imaging element, and the method comprises the following steps:
controlling the thermal imaging element to detect a plurality of sub-areas in the monitoring area one by one, and receiving current temperature data of the sub-areas detected by the thermal imaging element;
according to the current temperature data of the sub-area, carrying out temperature monitoring on the monitoring area, wherein the temperature monitoring comprises the following steps:
determining a corresponding sub-region according to positioning information associated with the current temperature data, wherein the positioning information is used for representing the sub-region from which the current temperature data is obtained;
determining local temperature data of the corresponding sub-region:
according to the current temperature data and the local temperature data of the sub-area, carrying out temperature monitoring on the sub-area, wherein the temperature monitoring comprises the following steps:
determining a temperature difference value between the current temperature data and the local temperature data of the same sub-region;
when the temperature difference value does not exceed a preset difference value, updating the local temperature data according to the current temperature data;
when the temperature difference exceeds a preset difference,
recording suspicious subareas of which the temperature difference exceeds the preset difference in the temperature monitoring of the monitored area;
determining suspicious subregions in the previous temperature monitoring of the monitoring region;
according to the suspicious subregion in this time of temperature monitoring of the said monitoring area and suspicious subregion in the previous time of temperature monitoring carry on the comparison, confirm whether carry on the fire early warning, including:
and when the preset number of suspicious sub-regions in the previous temperature monitoring exist in the suspicious sub-regions in the current temperature monitoring and the number of the suspicious sub-regions in the current temperature monitoring is larger than that of the suspicious sub-regions in the previous temperature monitoring, determining to perform fire early warning.
2. A thermal imaging scanning monitoring device is characterized in that the device is used for monitoring the temperature of a monitoring area and comprises a control part and a thermal imaging element connected with the control part,
the control section for executing the temperature monitoring method recited in claim 1;
the control part comprises a main control chip, a horizontal driving mechanism and a vertical driving mechanism;
the main control chip is respectively connected with the horizontal driving mechanism and the vertical driving mechanism; the thermal imaging element is connected with the horizontal driving mechanism and the vertical driving mechanism;
the thermal imaging element is used for detecting the sub-area in the monitoring area under the control of the control part and sending the detected temperature data to the control part.
3. A thermographic scanning monitoring system comprising an upper computer and at least one thermographic scanning monitoring device as claimed in claim 2, said thermographic scanning monitoring device being in communication with said upper computer.
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| CN113509672B (en) * | 2021-06-03 | 2023-02-28 | 西安石油大学 | Multi-linkage monitoring fire fighting device and monitoring method suitable for field scene |
| CN114999091A (en) * | 2022-05-17 | 2022-09-02 | 武汉闻立光电科技有限公司 | Forestry monitoring and early warning system based on infrared thermal imaging technology |
| CN116188920B (en) * | 2022-11-26 | 2024-04-26 | 中国消防救援学院 | Intelligent self-temperature-sensing-based fire-fighting and fire-extinguishing directional auxiliary method and system |
| CN116246407B (en) * | 2023-05-04 | 2023-08-01 | 浙江农林大学 | Agriculture and forestry area fire early warning supervisory systems based on artificial intelligence |
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