KR102195072B1 - Thermal camera system and driving method thereof - Google Patents

Abstract

Disclosed are a thermal camera system capable of performing various analysis, and a driving method thereof. The thermal camera system preferably comprises: a thermal camera device measuring infrared energy emitted by an object to be measured to image an image of a surface temperature to a value in a preset range and then output the same to an output device, but detecting infrared rays from a thermal image obtained from an infrared image sensor to convert the infrared rays into an electrical signal, and storing raw data converted from the electrical signal into a digital signal in an internal storage unit; and a remote monitoring device receiving and storing the raw data from the thermal camera device and outputting detected temperature and image (or video) data for each pixel to the output device.

Description

Thermal imaging camera system and its driving method {THERMAL CAMERA SYSTEM AND DRIVING METHOD THEREOF}

The present invention relates to a thermal imaging camera system and a driving method thereof, and more particularly, a thermal imaging camera that stores an image of a thermal imaging camera in the form of raw data and performs various analysis using the raw data. It relates to an image camera system and a driving method thereof.

In general, a thermal imaging camera is a device that measures temperature by sensing infrared energy from an object being photographed, and outputs the measured temperature as an image or image to monitor. A general camera that expresses color using visible light. Unlike this, it is a device that focuses on measuring temperature.

As such, since the thermal imaging camera is a device focusing on temperature measurement, the temperature value measured by the thermal imaging camera is one of the most important factors.

These thermal imaging cameras measure the amount of infrared energy entering each pixel by receiving the energy of an infrared wavelength through an infrared sensor.

Therefore, unlike the color of a general camera, a user randomly assigns a color using a histogram according to the amount of energy.

Then, the temperature value for each measurement point is calculated and displayed on the screen along with the image or transmitted to a remote monitoring device.

At this time, the thermal imaging camera saves or transmits the image inside the camera or to the remote monitoring device in the format of AVI, FLV, WMV, MP4, MOV and RGB, which are captured images (JPEG, etc.) or video formats with frames. do.

1 is a diagram schematically showing the configuration of a thermal imaging camera system according to the prior art, in which the infrared detection unit 12 detects infrared rays from the thermal image acquired by the infrared image sensor 11 and converts them into electrical signals, The electrical signal is converted into a digital signal (image data) and transmitted to the temperature converter 13.

The temperature conversion unit 13 converts the digital signal received from the infrared detection unit 12 into a temperature value, and the thermal image data processing unit 14 measures the image (or image) data acquired through the infrared image sensor 11 The temperature values measured for each point are combined and displayed on the output device 15 or stored in the internal storage unit 16 and transmitted to the remote monitor device 20 through the data transmission unit 17.

As described above, conventionally, the image (or image) data stored inside the thermal imaging camera or transmitted to and stored in the remote monitoring device 20 is the temperature measured by the thermal imaging camera for each measurement point based on the initial setting value. And image (or image) data acquired through the infrared image sensor 11 are combined.

Therefore, when analyzing by opening image (or image) data stored inside the thermal imaging camera or in the remote monitoring device 20, it is impossible to extract the temperature value of a location other than the temperature value of a predetermined location (measurement point), and the emissivity There is a problem that cannot be adjusted.

In addition, when the thermal imaging camera is used for the purpose of monitoring overheating or fire, the process of the fire is analyzed through various analysis of the stored image (or video) data. When data is stored in combination with the measured temperature for each measurement point, various analysis is difficult.

Korean Registered Patent Publication No. 10-1575937 (announcement date 2015.12.10.)

The present invention has been devised to solve this problem, a thermal imaging camera that stores an image (or image) of a thermal imaging camera in the form of raw data and performs various analyzes using the raw data. An object thereof is to provide a system and a driving method thereof.

In the thermal imaging camera system according to an embodiment of the present invention for achieving the above object, an image of a surface temperature is imaged to a value in a preset range by measuring infrared energy emitted by an object to be measured and outputting it to an output device, A thermal imaging camera device configured to detect infrared rays from a thermal image obtained by an infrared image sensor, convert them into electrical signals, and store raw data obtained by converting the electrical signals into digital signals in an internal storage unit; And a remote for receiving and storing the raw data from the thermal imaging camera device, detecting a temperature for each pixel from the stored raw data, and outputting the detected temperature and image (or image) data for each pixel to an output device. It is preferable to include a; monitoring device.

In an embodiment of the present invention, the thermal imaging camera device includes: an infrared image sensor for obtaining a thermal image by passing infrared rays radiated from an object to be measured; An infrared detector configured to detect infrared rays from the thermal image obtained by the infrared image sensor and convert them into electrical signals, and convert the electrical signals into digital signals; A temperature converter for converting the digital signal converted by the infrared detector into temperature; A storage unit for storing the digital signal converted by the infrared detection unit; A thermal image data processing unit configured to combine the image (or image) data acquired through the infrared image sensor with a temperature of a predetermined location among temperatures converted by the temperature conversion unit and display on an output device; And a data transmission unit for transmitting the digital signal converted by the infrared detection unit to the remote monitoring device.

In an embodiment of the present invention, the remote monitoring device includes: a storage unit for storing a digital signal transmitted from the thermal imaging camera device; An image reproducing unit converting the digital signal stored in the storage unit into temperature, and outputting the converted temperature and image (or image) data received from the thermal imaging camera device to an output device; And a temperature analysis unit that analyzes the temperature converted by the image reproducing unit.

In an embodiment of the present invention, the image reproducing unit includes: a temperature conversion unit for converting a digital signal stored in the storage unit into temperature; And a thermal image data processing unit configured to combine the temperature converted by the temperature converter with image (or image) data received from the thermal imaging camera device and output to an output device.

Meanwhile, in a method of driving a thermal imaging camera system according to an embodiment of the present invention, the thermal imaging camera device detects infrared rays from a thermal image obtained from an infrared image sensor and converts the electrical signal to a digital signal. Storing raw data converted into an internal storage unit and transmitting the converted raw data to a remote monitoring device; And the remote monitoring device receives and stores the raw data from the thermal imaging camera device, detects a temperature for each pixel from the stored raw data, and stores the temperature and image (or image) data detected for each pixel. It is preferable to include; outputting to an output device.

In an embodiment of the present invention, storing the raw data in an internal storage unit and transmitting the data to a remote monitoring device includes: obtaining a thermal image by passing infrared rays radiated from the object to be measured; Detecting infrared rays from the thermal image, converting them into electrical signals, and converting the electrical signals into digital signals; Storing the digital signal in a storage unit; And transmitting the digital signal to the remote monitoring device.

In an embodiment of the present invention, the outputting of the temperature and image (or image) data to an output device includes: storing a digital signal transmitted from the thermal imaging camera device in a storage unit; Converting the digital signal stored in the storage unit into temperature; Outputting the converted temperature and image (or image) data received from the thermal imaging camera device to an output device; And analyzing the converted temperature and outputting it to the output device.

In the thermal imaging camera system and its driving method of the present invention, by storing the image (or image) of the thermal imaging camera in the form of raw data, it is possible to measure not only the specified location but also the temperature of other locations, and the emissivity Adjustment is possible, and various analyzes of past phenomena can be performed.

In addition, an image (or image) stored in the form of raw data can be continuously displayed and played back as a video screen, and a histogram can be applied to colorized imaging.

1 is a view schematically showing the configuration of a thermal imaging camera system according to the prior art.
2 is a diagram schematically showing the configuration of a thermal imaging camera system according to an embodiment of the present invention.
3 is a diagram schematically showing a configuration of an image reproducing unit applied to the present invention.
4 is a processing diagram illustrating a method of driving a thermal imaging camera system according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION The detailed description of the present invention to be described below refers to the accompanying drawings, which illustrate specific embodiments in which the present invention may be practiced. These embodiments are described in detail sufficient to enable a person skilled in the art to practice the present invention. It is to be understood that the various embodiments of the present invention are different from each other but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the present invention in relation to one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the detailed description to be described below is not intended to be taken in a limiting sense, and the scope of the present invention, if appropriately described, is limited only by the appended claims, along with all scopes equivalent to those claimed by the claims. In the drawings, like reference numerals refer to the same or similar functions over several aspects.

Hereinafter, a thermal imaging camera system and a driving method thereof according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a diagram schematically showing the configuration of a thermal imaging camera system according to an embodiment of the present invention.

As shown in Fig. 2, the thermal imaging camera system according to the present invention measures the infrared energy emitted by the object to be measured and images the surface temperature image in a specific range (for example, a value between 0 and 255). The thermal imaging camera device 100 to output and process the image (or image) data received from the thermal imaging camera device 100 in the form of raw data and output it to the output device 225 It can be made including 200.

The thermal imaging camera device 100 includes an infrared image sensor 110, an infrared detection unit 120, a temperature conversion unit 130, a thermal image data processing unit 140, an output device 150, a storage unit 160, and data transmission. It may be formed including the unit 170.

The infrared image sensor 110 acquires a thermal image (or image) by passing infrared rays radiated from the object to be measured.

The thermal image (or image) acquired through the infrared image sensor 110 is 2D image (or image) data, and each pixel (pixel) value is a value representing the temperature of a corresponding part.

The thermal image (or image) displays colors according to the value of each pixel or the temperature of each part.

The infrared detector 120 detects infrared rays from the thermal image obtained by the infrared image sensor 110 and converts them into electrical signals, and converts the electrical signals into digital signals suitable for image signal processing.

The infrared detector 120 may include a thermal image sensor and an A/D converter.

The thermal image sensor detects infrared rays from the thermal image acquired by the infrared image sensor 110 and converts them into electrical signals.

The thermal image sensor may have a focal plane array (FPA) structure in which a plurality of pixels (pixels) are formed in a two-dimensional array, but the structure is not limited thereto.

As described above, when the thermal image sensor has an FPA structure, the thermal image sensor detects the amount of infrared energy for each pixel determined according to the resolution of the FPA, and outputs a corresponding value.

The A/D converter converts the output value of the electrical signal output by each pixel from the thermal image sensor into a digital signal, and transfers the output value converted into the digital signal to the temperature converter 130, while the storage unit 160 ), and transmitted to the remote monitoring device 200 through the data transmission unit 170.

Here, the data transmitted from the infrared detection unit 120 to the temperature conversion unit 130, the storage unit 160, and the data transmission unit 170 are electrically transmitted by detecting infrared rays from the thermal image obtained by the infrared image sensor 110. It is image (or image) data obtained by converting the electrical signal to a digital signal after being converted into a signal, and is raw data.

The temperature conversion unit 130 converts the digital signal (image (or image) data) received from the infrared detection unit 120 into temperature.

The thermal image data processing unit 140 corrects the temperature input from the temperature conversion unit 130 based on the set emissivity, the ambient temperature, and the distance to the object to be measured, and the infrared detection unit 120 through the temperature conversion unit 130 Arithmetic processing to extract various information (eg, image (or image) data, coordinates having a maximum temperature value, coordinates having a minimum temperature value, etc.) for output to the output device 150 from the digital signal received from Perform.

The thermal image data processing unit 140 outputs the corrected temperature and computed image (or image) data to an output device 150 such as a monitor screen.

The thermal image data processing unit 140 may combine the calculated image (or image) data with the temperature measured for each measurement point and output it to the output device 150.

The storage unit 160 receives and stores a digital signal (image (or image) data) in the form of raw data from the infrared detection unit 120.

The data transmission unit 170 receives a digital signal (image (or image) data) in the form of raw data from the infrared detection unit 120 and transmits it to the remote monitoring device 200.

Meanwhile, the remote monitoring device 200 may include a storage unit 210, an image reproducing unit 220, and a temperature analysis unit 230.

The storage unit 210 receives and stores a digital signal (image (or image) data) in the form of raw data from the infrared camera device 100.

The image reproducing unit 220 converts the digital signal stored in the storage unit 210 into temperature, and outputs the converted temperature and image (or image) data received from the thermal imaging camera device 100. Can be printed on.

The image reproducing unit 220 may include a temperature conversion unit 221, a thermal image data processing unit 223, and an output device 225 as shown in FIG. 3.

The temperature conversion unit 221 converts a digital signal (image (or image) data) stored in the storage unit 210 into temperature.

The thermal image data processing unit 223 corrects the temperature input from the temperature conversion unit 221 based on the set emissivity, ambient temperature, and distance to the object to be measured, and outputs the digital signal read from the storage unit 210. Arithmetic processing for extracting various types of information (eg, image (or image) data, coordinates having a maximum temperature value, coordinates having a minimum temperature value, etc.) for output to 225 is performed.

The thermal image data processing unit 223 outputs the corrected temperature and computed image (or image) data to the output device 225.

The thermal image data processing unit 223 may combine the computed image (or image) data with the temperature measured for each measurement point and output it to the output device 225.

Here, the measuring point can be changed by the user, and even if the measuring point is changed, the temperature of the changed point can be measured.

The temperature analysis unit 230 performs temperature analysis in various ways using the temperature converted by the image reproducing unit 220.

The thermal image data processing unit 223 may combine the analysis result analyzed by the temperature analysis unit 230 with the image (or image) data processed and output to the output device 225.

4 is a processing diagram illustrating a method of driving a thermal imaging camera system according to an embodiment of the present invention.

First, a thermal image (or image) is acquired through the infrared image sensor 110 of the thermal imaging camera apparatus 100 (S10).

The thermal image (or image) obtained in step S10 may be implemented as 2D image (or image) data.

Thereafter, the infrared detection unit 120 detects infrared rays for each pixel in the thermal image obtained in step S10, converts them into electrical signals, and converts the electrical signals converted for each pixel into digital signals (S20).

The digital signal converted through the above step S20 is applied to the temperature conversion unit 130, and the temperature conversion unit 130 converts the digital signal applied from the infrared detection unit 120 to temperature, and then converts the digital signal to a temperature. 140, and the thermal image data processing unit 140 corrects the temperature converted by the temperature conversion unit 130 based on the set emissivity, the ambient temperature, and the distance to the object to be measured, and the temperature conversion unit 130 Various information (e.g., image (or image) data, coordinates having a maximum temperature value, coordinates having a minimum temperature value, etc.) for outputting to the output device 150 from a digital signal received from the infrared detector 120 through After performing an arithmetic process for extracting ), the corrected temperature and computed image (or image) data are output to the output device 150.

Then, the digital signal converted in step S20 is stored in the storage unit 160 and transmitted to the remote monitoring device 200 through the data transmission unit 170 (S30).

The data stored in the storage unit 160 or transmitted to the remote monitoring device 200 through the data transmission unit 170 in the step S30 is, by detecting infrared rays from the thermal image acquired by the infrared image sensor 110. This is image (or image) data obtained by converting the electrical signal into a digital signal after it is converted into an electrical signal, and is raw data.

The remote monitoring device 200 that has received the digital signal from the thermal imaging camera device 100 through the above step S30 stores the received digital signal in the storage unit 210 (S40).

Thereafter, in the case of reproducing image (or image) data stored in the storage unit 210 to analyze the process of the fire, the temperature conversion unit 221 is a digital signal stored in the storage unit 210 It reads and converts it to temperature (S50).

Further, the thermal image data processing unit 223 corrects the temperature converted by the temperature conversion unit 221 based on the set emissivity, ambient temperature, and distance to the object to be measured, and outputs from a digital signal read from the storage unit 210 After performing arithmetic processing for extracting various information (eg, image (or image) data, coordinates having a maximum temperature value, coordinates having a minimum temperature value, etc.) to be output to the device 225, the corrected The temperature and the processed image (or image) data are output to the output device 225 (S60).

In the above-described step S60, the thermal image data processing unit 223 may combine the calculated image (or image) data with the temperature measured for each measurement point and output it to the output device 225.

Here, the measuring point can be changed by the user, and even if the measuring point is changed, the temperature of the changed point can be measured.

Meanwhile, the temperature analysis unit 230 may perform various methods of temperature analysis using the temperature converted by the image reproducing unit 220.

The thermal image data processing unit 223 may combine the analysis result analyzed by the temperature analysis unit 230 with the image (or image) data processed and output to the output device 225.

Although the above has been described with reference to embodiments, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention described in the following claims. I will be able to.

100. Thermal imaging camera device, 110. Infrared image sensor,
120. Infrared detection unit, 130, 221. Temperature conversion unit,
140, 223. Thermal image data processing unit, 150, 225. Output device,
160, 210. Storage unit, 170 data transmission unit,
200. Remote monitoring device, 220. Video playback unit,
230. Temperature analysis unit

Claims (7)

The infrared energy emitted by the object to be measured is measured, the image of the surface temperature is imaged to a value in a preset range, and output to the output device, but infrared is detected from the thermal image obtained by the infrared image sensor and converted into an electrical signal. A thermal imaging camera device for storing raw data obtained by converting an electrical signal into a digital signal in an internal storage unit; And
Remote monitoring for receiving and storing the raw data from the thermal imaging camera device, detecting a temperature for each pixel from the stored raw data, and outputting the detected temperature and image (or image) data for each pixel to an output device It includes;
The thermal imaging camera device,
An infrared image sensor for obtaining a thermal image by passing infrared rays radiated from the object to be measured;
An infrared detector configured to detect infrared rays from the thermal image obtained by the infrared image sensor and convert them into electrical signals, and convert the electrical signals into digital signals;
A temperature conversion unit converting the digital signal converted by the infrared detection unit into temperature;
A storage unit for storing the digital signal converted by the infrared detection unit;
Correcting the temperature converted by the temperature conversion unit based on at least one of a preset emissivity, ambient temperature, and distance to the object to be measured, and outputting a digital signal received from the infrared detection unit through the temperature conversion unit to an output device. For extracting information (image (or image) data, one of coordinates having a maximum temperature value, and coordinates having a minimum temperature value), the corrected temperature and the calculated image (or image) data A thermal image data processing unit that outputs the data to an output device;
Including; a data transmission unit for receiving the digital signal converted by the infrared detection unit and transmitting it to the remote monitoring device,
Data transmitted from the infrared detection unit to the temperature conversion unit, the storage unit, and the data transmission unit,
In the thermal image obtained by the infrared image sensor, infrared is detected and converted into an electrical signal, and then the electrical signal is converted into a digital signal, and is image (or image) data, which is raw data,
The remote monitoring device,
A storage unit for storing a digital signal in the form of raw data transmitted from the thermal imaging camera device;
The digital signal stored in the storage unit is read and converted into temperature, the converted temperature is corrected based on at least one of a preset emissivity, an ambient temperature, and a distance to the object to be measured, and the digital read from the storage unit Performs arithmetic processing to extract information (one of image (or image) data, coordinates having a maximum temperature value, and coordinates having a minimum temperature value) to be output from a signal to an output device, and the corrected temperature and calculation processing An image reproducing unit for outputting the converted image (or image) data to an output device;
Including, a thermal imaging camera system; temperature analysis unit for analyzing the temperature converted by the image reproducing unit. delete delete The method of claim 1,
The video playback unit,
A temperature conversion unit for reading the digital signal stored in the storage unit and converting it into temperature; And
Information for correcting the temperature converted by the temperature converter based on at least one of a preset emissivity, an ambient temperature, and a distance to the object to be measured, and outputting the digital signal read from the storage to an output device (image ( Or an image) a thermal image data processing unit that performs arithmetic processing for extracting at least one of data, coordinates having a maximum temperature value, and coordinates having a minimum temperature value); and
The thermal image data processing unit,
Outputs the corrected temperature and the computed image (or image) data to an output device, combines the computed image (or image) data with the measured temperature for each measurement point, and outputs it to the output device. The analyzed analysis result is combined with the processed image (or video) data and output to an output device,
The measurement point is,
Thermal imaging camera system, modified by the user. The thermal imaging camera device detects infrared rays from a thermal image acquired by an infrared image sensor and converts them into electrical signals, stores raw data obtained by converting the electrical signals into digital signals in an internal storage unit, and Transmitting to a monitoring device; And
The remote monitoring device receives and stores the raw data from the thermal imaging camera device, detects a temperature for each pixel from the stored raw data, and outputs the temperature and image (or image) data detected for each pixel. Including; outputting to the device,
The thermal imaging camera device detects infrared rays from a thermal image obtained from an infrared image sensor and converts them into electrical signals, and stores raw data obtained by converting the electrical signals into digital signals in an internal storage unit, The step of transmitting to the remote monitoring device,
Obtaining, by an infrared image sensor, infrared rays radiated from the object to be measured to obtain a thermal image;
An infrared detection unit, detecting infrared rays from the thermal image acquired by the infrared image sensor, converting them into electrical signals, and converting the electrical signals into digital signals;
Storing the digital signal converted by the infrared detector;
Converting, by a temperature conversion unit, the digital signal converted by the infrared detection unit into temperature;
The thermal image data processing unit corrects the temperature converted by the temperature conversion unit based on at least one of a preset emissivity, an ambient temperature, and a distance to the object to be measured, and a digital signal received from the infrared detection unit through the temperature conversion unit Performs an operation process to extract information (one of image (or image) data, a coordinate having a maximum temperature value, and a coordinate having a minimum temperature value) for output to the output device at, and the corrected temperature and the calculated Outputting image (or video) data to an output device;
Including, a data transmission unit, receiving the digital signal converted by the infrared detection unit and transmitting it to the remote monitoring device;
Data transmitted from the infrared detection unit to the temperature conversion unit, the storage unit, and the data transmission unit,
It is image (or image) data obtained by detecting infrared rays from the thermal image acquired by the infrared image sensor and converting them into electrical signals, and then converting the electrical signals into digital signals, and is raw data,
The remote monitoring device receives and stores the raw data from the thermal imaging camera device, detects a temperature for each pixel from the stored raw data, and outputs the temperature and image (or image) data detected for each pixel. The steps to output to the device are:
Storing, by a storage unit, a digital signal in the form of raw data transmitted from the thermal imaging camera device;
A step of reading, by a temperature conversion unit of the image reproducing unit, a digital signal stored in the storage unit and converting it into temperature;
The thermal image data processing unit of the image reproducing unit corrects the temperature converted by the temperature conversion unit of the image reproducing unit based on at least one of a preset emissivity, an ambient temperature, and a distance to the object to be measured, and a digital signal read from the storage unit Performs an operation process to extract information (one of image (or image) data, a coordinate having a maximum temperature value, and a coordinate having a minimum temperature value) for output to the output device at, and the corrected temperature and the calculated Outputting image (or image) data to an output device;
Analyzing, by a temperature analysis unit, a temperature converted by a temperature conversion unit of the image playback unit;
The thermal image data processing unit of the image reproducing unit, combining the analysis result analyzed by the temperature analysis unit with the image (or image) data processed by the operation and outputting the result to an output device. delete delete

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