KR101765391B1 - Portable measuring device attachable to mobile device and method for measuring using the portable measuring device - Google Patents

Abstract

According to an embodiment of the present invention, there is provided a portable measurement device detachable to a mobile device, comprising: a thermal camera module for generating temperature data of a subject; An input / output interface for receiving a control signal from the mobile device and transmitting output data of the thermal camera module to the mobile device; And a control unit for controlling an operation of the thermal imaging camera module based on the control signal received from the mobile device.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a portable measuring device capable of being detached from a mobile device, and a measuring method using the measuring device.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a portable measuring device, and more particularly, to a portable measuring device mounted in a mobile device and capable of using resources of the mobile device and a measuring method using the measuring device.

The thermal camera senses the infrared energy of the subject, converts it into an electrical signal and displays it as an image, and can also display the temperature information of the subject. Since the thermal image taken by the thermal camera provides the temperature information of the subject, the thermal camera is utilized in various industrial fields such as electric defects, short circuit, fire, electric appliance overheating, energy loss detection, leak detection, It also plays a big role in the night vision field which searches for people.

On the other hand, the infrared emissivity on the surface of the subject has a great influence when measuring the infrared energy of the subject using a thermal camera. Therefore, if the emissivity of the subject is known in advance, the temperature of the subject can be measured more accurately.

However, various devices such as a thermal camera and an emissivity measuring device are independent devices, and each device is composed of electrical devices, computing devices, and display devices. When these devices are integrated, they become bulky and heavy in weight , Especially in the case of thermal cameras, the price is so high that it can not be easily used by the general public.

Korean Patent Publication No. 2012-0134983 (published on December 12, 2012) Korean Patent Laid-Open Publication No. 2013-0142810 (published on December 30, 2013)

According to an embodiment of the present invention, there is provided a portable measurement device including a thermal imaging camera, temperature measurement, distance measurement, and emissivity measurement module.

According to one embodiment of the present invention, the portable measurement device of the present invention is operatively coupled to a mobile device such as a smart phone or a tablet PC, so that the measurement data measured by the portable measurement device is displayed on the display screen of the mobile device Provided is a portable measurement device capable of accurate analysis.

According to an embodiment of the present invention, there is provided a portable measurement device detachable to a mobile device, comprising: a thermal camera module for generating temperature data of a subject; An input / output interface for receiving a control signal from the mobile device and transmitting output data of the thermal camera module to the mobile device; And a control unit for controlling an operation of the thermal imaging camera module based on the control signal received from the mobile device.

According to an embodiment of the present invention, there is provided a method of measuring by a portable measuring device detachable to a mobile device, the control unit of the portable measuring device generating temperature data of a subject based on a control signal received from the mobile device Thermal camera module; And a distance measurement module for measuring a distance to the subject; Selecting and activating one of the modules; Generating an activated module data; And transmitting the generated data to the mobile device through an input / output interface unit of the portable measurement device.

According to an embodiment of the present invention, the functions of the measurement devices which have been independently performed are integrated into the portable measurement device, thereby providing the convenience of use and the convenience of the portable device.

According to an embodiment of the present invention, the portable measurement device of the present invention operates in combination with a mobile device such as a smart phone or a tablet PC, so that the measurement data measured by the portable measurement device is displayed on a wide display screen of the mobile device There is an advantage that accurate analysis can be done.

1 is a block diagram for explaining a portable measurement apparatus according to an embodiment of the present invention;
2 is a view for explaining a functional block of a portable measurement apparatus according to an embodiment,
3 is a diagram for explaining a hardware configuration of a portable measurement device according to an embodiment,
4 is a view for explaining a functional block of a mobile device to which a portable measurement apparatus according to an embodiment is attached,
5 is a diagram for explaining a hardware configuration of a mobile device to which a portable measurement device according to an embodiment is attached,
6 is a flowchart illustrating an exemplary measurement method using the portable measurement apparatus according to an embodiment,
Figure 7 is a flow chart illustrating an exemplary method of emissivity measurement according to one embodiment;
8 and 9 are views for explaining the shape of a portable measurement apparatus according to an embodiment.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

In this specification, when an element is referred to as being 'above' (or 'below', 'right', or 'left') of another element, it may be above (or below, ) Or it may mean that a third component may be interposed therebetween. Further, in the drawings, the thickness of the components is exaggerated for an effective description of the technical content.

Also, in this specification, expressions such as 'upper', 'lower (lower)', 'left', 'right', 'front', 'rear' And it is a relative expression used for convenience of explanation based on the drawings when describing the present invention with reference to the respective drawings.

Where the terms first, second, etc. are used herein to describe components, these components should not be limited by such terms. These terms have only been used to distinguish one component from another. The embodiments described and exemplified herein also include their complementary embodiments.

In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms "comprise" and / or "comprising" used in the specification do not exclude the presence or addition of one or more other elements.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, various specific details have been set forth in order to explain the invention in greater detail and to assist in understanding it. However, it will be appreciated by those skilled in the art that the present invention may be understood by those skilled in the art without departing from such specific details. In some cases, it should be mentioned in advance that it is common knowledge in describing an invention that parts not significantly related to the invention are not described in order to avoid confusion in explaining the present invention.

1 is a block diagram for explaining a portable measurement apparatus according to an embodiment of the present invention. Referring to the drawings, the portable measurement device 20 according to an embodiment of the present invention can be configured to operate in conjunction with the mobile device 10. [

The mobile device 10 may be one of a portable device such as a smart phone, a tablet PC, a PDA, a notebook, and the like. The portable measurement device 20 can use some of the resources of the mobile device 10 when the portable measurement device 20 is coupled to and operated on the mobile device 10. [ For example, resources such as a processor and a memory of the mobile device 10 can be used for processing and calculation of the measurement data measured by the portable measurement device 20. [ In another embodiment, the portable measurement device 20 may use the display of the mobile device 10 to show the measurement data to the user.

An application for controlling the portable measurement device 20 may be installed in the mobile device 10. [ The user executes this application in a state where the portable measurement apparatus 20 is attached to the mobile device 10 and inputs various commands and settings for measurement through this application. When this command or setting signal is inputted as a control signal, And can be transmitted to the device 20 to control the portable measurement device 20. [

In the illustrated embodiment, the portable measurement device 20 according to one embodiment is detachably attached to the mobile device 10 and includes a thermal camera module 210, a temperature measurement module 220, a distance measurement module 230, And emissivity measurement module 240.

The thermal camera module 210 can detect infrared rays radiated from a subject and generate temperature data of the subject. The temperature measurement module 220 can measure the temperature of the object. The distance measurement module 230 may measure the distance to the object and the emissivity measurement module 240 may measure the infrared emissivity of the object.

The portable measurement device 20 activates and operates one of the modules 210, 220, 230 and 240 to generate measurement data of temperature, distance, and emissivity, and then transmits the measured data to the mobile device 10. The mobile device 10 transmits the received data To the user through the display.

As a specific example, the thermal camera module 210 detects the infrared energy of a subject and converts it into an electric signal, converts the electric signal into temperature data, which is a digital signal, It can be displayed as a thermal image on the display screen of the display unit 10 or the temperature of the subject. At this time, the calculation of temperature data, temperature processing, and the like may be performed in the portable measurement device 20 or in the mobile device 10.

The temperature measurement module 220 measures the temperature of the object and displays it on the display screen of the mobile device 10. [ In one embodiment, a lead such as the probe 30 may be connected to the portable measurement device 20 for temperature measurement, and the temperature may be measured by contacting the probe 30 to the surface of the object. The processing operation of the measured temperature data may be performed in the portable measurement apparatus 20 or in the mobile device 10. [

The distance measurement module 230 measures the distance to the object and displays the measurement value on the display screen of the mobile device 10. [ In one embodiment, the distance measurement module 230 may measure the time that the light emitted from the portable measurement device 20 reaches the object and returns to the object, or may measure the distance to the object by measuring the amount of reflected light reflected from the object .

In one embodiment, distance measurement module 230 may include, for example, an optical transmitter that emits infrared or laser light and an optical receiver that receives reflected infrared or laser. In the case of using infrared rays, the distance to the object can be calculated based on the received light amount when the infrared receiver receives the infrared rays. Alternatively, when the laser receiver uses the laser light, The distance to the object can be calculated by measuring the time. The measurement calculation of the measured data may be performed in the portable measuring device 20 or in the mobile device 10. [

The emissivity measurement module 240 can measure the infrared emissivity of the object. To measure the emissivity of an object, a temperature value obtained by photographing the object with a thermal camera, a temperature value measured using a temperature sensor (contact or non-contact type), and a distance to the object are required. In one embodiment, the temperature value obtained with the thermal camera may be obtained, for example, using the thermal camera module 210, and the temperature value measured using the temperature sensor may be measured using the temperature measurement module 220 have. The distance to the object can be obtained using the distance measurement module 230.

As an alternative method of obtaining the distance to the object, for example, two real cameras can be used. For example, assuming that the mobile device 10 actually has a camera and that the portable measurement device 20 also has a separate real camera, two cameras spaced a predetermined distance can function as a stereo camera, Can be measured. As another example, a TOF (time of flight) sensor may be mounted on at least one of the real camera and / or the thermal camera of the mobile device 10 or the portable measurement device 20, The distance information to the object can be obtained. It goes without saying that one of various methods for obtaining the temperature and / or distance of the object may be used in the present invention.

FIG. 2 is a block diagram for explaining a functional block of a portable measurement apparatus according to an embodiment. FIG. 2 shows an exemplary specific configuration of the portable measurement apparatus 20 of FIG.

Referring to the drawings, the portable measurement device 20 includes a thermal camera module 210 for generating an infrared image of a subject; A measurement module 260 incorporating a temperature measurement module 220, a distance measurement module 230, and an emissivity measurement module 240; A control unit 270; And an interface unit 275.

In one embodiment, the thermal camera module 210 may include an infrared lens 211, an infrared detector 213, an analog-to-digital converter (ADC) 214, and a signal processor 215. The infrared lens 211 is a lens that transmits infrared rays, and the infrared ray detector 213 detects infrared rays incident on the infrared ray lens 211 and converts the detected infrared rays into an electric signal. The detector 213 may have, for example, a focal plane array (FPA) structure in which a plurality of pixels are arranged in a two-dimensional array, but the structure is not limited thereto. The ADC 214 converts an electrical signal, which is an analog signal generated by the detector 213, into a digital signal. The signal processing unit 215 performs noise removal, dead pixel processing, non-uniformity correction, and the like on the temperature data, And performs data processing.

Although it has been described in the illustrated embodiment that such data processing is performed in the portable measurement device 20, the functionality of the signal processing portion 215 may be performed in the mobile device 10 in an alternative embodiment. That is, in this case, temperature data converted into a digital signal by the ADC 214 is transmitted to the mobile device 10, and the mobile device 10 can perform dead pixel processing, non-uniformity correction, and the like on the temperature data.

In the illustrated embodiment, the metrology module 260 includes the functionality of the temperature measurement module 220, distance measurement module 230, and emissivity measurement module 240 shown in FIG. The measurement module 260 may include a probe input terminal 221 and a temperature sensing sensor 223 for measuring the temperature of the object and may include a laser transmitter 231 and a receiver 233 for measuring the distance to the object And may further include an analog-to-digital converter (ADC) 265 and a signal processing unit 267.

In one embodiment, the temperature sensing sensor 223 may be a temperature sensing resistor (RTD) or a thermistor that utilizes the property of changing the resistance value by, for example, a temperature change, and, alternatively, an IC temperature sensor May be used. In one embodiment, the object may be in direct contact with the temperature sensing sensor 223, but in an alternative embodiment, a temperature measurement probe (not shown) may contact the object to measure the temperature of the object. In this case, for example, a probe for temperature measurement may be attached to the probe input terminal 221.

The laser transmitter 231 may be implemented, for example, as a laser diode to generate a laser to emit as an object, and the laser receiver 233 may receive the laser reflected from the object to measure the time between emission and reception of the laser. In an alternative embodiment, a laser transmitter 231 and a receiver 233 using infrared rays may be used, or a module for other distance measuring methods may be provided.

As described above, the output of the probe input terminal 221 and the signals output from the temperature sensor 223 and the laser receiver 233 are analog signals, which are converted into measurement data, which is a digital signal, by the ADC 265. Thereafter, the measurement data can be arithmetically processed in the signal processing unit 267. [ The signal processing unit 267 calculates the temperature or the distance value of the object by calculating the measurement data related to the temperature or the distance passing through the ADC 265, and the calculated data is transmitted to the mobile device 10, Can be displayed on the display screen.

When the emissivity measuring module 240 operates in the portable measuring apparatus 20, the signal processing section 267 can also calculate the emissivity of the object. In this case, in one embodiment, the signal processing unit 267 receives temperature information measured from the thermal camera module 210, temperature information measured from the temperature sensor 223, and distance information measured from the laser transceivers 231 and 233 From this, the infrared emissivity of the object can be calculated. This will be described later with reference to FIG.

In an alternative embodiment, however, the function of the signal processing unit 267 may be performed in the mobile device 10. That is, the measurement data converted into the digital signal by the ADC 265 is transmitted to the mobile device 10, and the mobile device 10 calculates the measurement data to calculate the temperature, distance, or emissivity value, It can also be displayed.

The control unit 270 can control activation and operation of the thermal imaging camera module 210 and the measurement module 260. In an embodiment, the control unit 270 may control the modules 210 and 260 by transmitting control signals to the modules 210 and 260, respectively. The control unit 270 can set and control the measurement range and the measurement conditions to be measured by the modules 210 and 260, and can control the sampling conditions of the ADCs 214 and 265, for example.

In this case, the control signal may be a signal generated by the control unit 270 or a signal received from the mobile device 10 (e.g., a user input signal). The user can execute an application for controlling the portable measurement apparatus 20 in the mobile device 10 and select at least one of the modules 210 and 260 through the application and activate the application.

If the emissivity measuring module is selected, the controller 270 activates both the thermal imaging camera module 210 and the measuring module 260 to acquire information necessary for emissivity calculation to calculate the emissivity.

The input / output interface unit 275 may receive a control signal from the mobile device 10 and transmit the control signal to the control unit 270 or the output data of the thermal camera module 210 and the measurement module 260 to the mobile device 10 .

The input / output interface unit 275 may be implemented by firmware or software such as hardware and drivers such as a physical terminal that can communicate with an external device such as the mobile device 10 in a wired or wireless manner. The wired or wireless communication may include, for example, a communication scheme such as a USB scheme, WiFi, Bluetooth, and NFC (short-range wireless communication).

2, the temperature measurement module 220, the distance measurement module 230, and the emissivity measurement module 240 are integrated into one measurement module 260. However, since the entire modules 220, 230, (265) and one signal processor (267) are used in common. In an alternative embodiment, each module 220, 230, 240 may have separate ADCs and signal processing units and may be implemented independently of each other.

The ADC 214 of the thermal camera module 210 and the ADC 265 of the measurement module 260 are integrated into one and the signal processing unit 215 of the thermal camera module 210 and the measurement module 260 of the thermal imaging camera module 210 are integrated into one, And the signal processing unit 267 of the signal processing unit 260 may be integrated into one. That is, in this alternative embodiment, only the sensor function sections such as the thermal camera, the temperature sensor, and the laser transceiver exist separately, and a function section for converting the analog signal output from each sensor into a digital signal, And each of the functional units may be integrated into a single ADC and a signal processing unit.

In the embodiment of FIGS. 1 and 2, the portable measurement device 20 is described as including both the thermal camera module 210, the temperature measurement module 220, the distance measurement module 230, and the emissivity measurement module 240 However, this is according to an exemplary embodiment, and in an alternative embodiment, the portable metrology apparatus 20 may include only some of the modules 210, 220, 230, 240. That is, only a part of the above-described modules may be provided in the portable measurement apparatus 20 according to a specific embodiment.

FIG. 3 is a diagram for explaining the hardware configuration of the portable measurement device according to an embodiment, and shows the portable measurement device 20 of FIG. 1 or 2 from the hardware viewpoint.

Referring to the drawings, a portable measurement apparatus 20 includes an infrared lens 211, a shutter 212, an infrared detector 213, a probe input terminal 221, an input / output interface unit 275, a processor 281, a memory 282, a storage device 283, and a laser transceiver 284, and a battery 285. The portable measurement apparatus 20 may further include other components, but is not shown to be directly related to the present invention. 3, the infrared lens 211, the infrared detector 213, the probe input terminal 221, the input / output interface 275, and the laser transceiver 284 have been described with reference to FIG.

The shutter 212 has a structure and a function similar to those of a shutter of a general camera, and functions to block infrared rays incident on the infrared detector 213. In particular, in one embodiment, the shutter 212 is used to block infrared rays incident on the infrared detector 213 to update an offset table used for non-uniformity correction (NUC) of temperature data. Therefore, if the non-uniform correction is performed in a shutterless manner, the shutter 212 may not be needed.

In one embodiment, the opening and closing operation of the shutter 212 can be operated by a driving motor such as a solenoid motor, and the user can manually open and close the shutter by sliding the shutter. As another embodiment, a button protruding from the outer surface of the portable storage device 20 may be configured to be mechanically connected to the shutter 212 so that when the user presses the button, the shutter mechanically connected to the button is moved to open and close the shutter .

Preferably, the thermal camera module 210 may perform an operation of updating an offset table for non-uniformity correction when the shutter 212 is closed. For example, the thermal camera module 210 may further include a sensor for detecting the opening and closing of the shutter. When the sensor senses that the shutter is closed, the infrared detector 213 The offset table can be updated based on the temperature data by the signal. At this time, the update processing operation of the offset table can be performed, for example, in the signal processing unit 215, but is not limited thereto.

The processor 281 may be implemented in hardware such as any CPU chip. The memory 282 may be implemented as a storage means such as a random access memory (RAM) or a ROM and may be implemented as an operating system (OS), firmware, application programs Etc. may be loaded.

The storage device 283 is a nonvolatile storage device for storing data, and may be embodied as a semiconductor memory device such as a hard disk drive (HDD), a flash memory, or a SD (Secure Digital) memory card. In one embodiment, the storage device 283 may store software or data (e.g., a NUC table) required for operation of each module 210, 220, 230, 240,

The battery 285 supplies power necessary for driving the portable measurement apparatus 20. In one embodiment, the battery 285 may be configured to provide power to the mobile measurement device 20 as well as the mobile device 10 to extend the battery life of the mobile device 10. [ For example, the portable measurement device 20 can operate in a charging mode in which the battery of the mobile device 10 is charged using the battery 285 it has.

When the portable measurement device 20 is connected to the mobile device 10 via, for example, a USB terminal, when the user inputs a charge mode execution command on the mobile device 10, The device 10 transfers the charge mode start signal to the portable measurement device 20. [ When the portable measurement device 20 receives the charging mode start signal, the controller 270 of the portable measurement device 20 increases the current supply amount supplied from the battery 285 to the mobile device 10 to a predetermined value or more . When the mobile device 10 detects that the current supply amount is increased to a predetermined value or more, the mobile device 10 receives the current supplied from the battery 285 and charges its battery (e.g., 195 in FIG. 5).

FIG. 4 is a view for explaining a functional block of a mobile device to which a portable measurement apparatus according to an embodiment is attached, showing an exemplary specific configuration of the mobile device 10 of FIG.

The mobile device 10 may include a user interface unit 110, an application unit 120, a display unit 130, a storage unit 140, and an input / output interface unit 150.

The user interface unit 110 receives user input or displays various information and data to the user. It will be appreciated that the display unit 130 is also functionally included in the user interface unit 110 if the display unit 130 of the mobile device is a touch screen type and can receive user input.

The application unit 120 processes the user command received through the user interface unit 110, controls the portable measurement device 20, performs calculation processing of data received from the portable measurement device 20, May be displayed through the display unit 130, stored in the storage unit 140, or transmitted to a device external to the mobile device.

The application unit 120 includes a temperature data processing unit 121 for processing the temperature data generated by the thermal camera module 210 and a measurement data processing unit 123 for processing the data generated by the measurement module 260 ).

The temperature data processing unit 121 may convert the temperature data into a thermal image or perform image enhancement (e.g., enhance image quality, contrast enhancement, etc.) of the thermal image after receiving the temperature data from the portable measurement apparatus 20 . Further, the temperature data processing unit 121 can perform the operation of converting the temperature data into an actual temperature value after receiving the temperature data from the cellular phone measurement apparatus 20. [

The measurement data processing unit 123 processes the measurement data generated by the measurement module 260. [ For example, the measurement data processing unit 123 can calculate the voltage, current, or resistance value from the measurement data received by the portable measurement device 20 or calculate the voltage waveform. The measurement data processing unit 123 may have a function overlapping with the signal processing unit 267 of FIG. 2, so that either the measurement data processing unit 123 or the signal processing unit 267 may be present or may share the functions.

The application unit 120 may be implemented by one or more software and is operated by being downloaded to the mobile device 10 through an application store or the like and then executed.

The input / output interface unit 150 performs an interface with the portable measurement device 20. The portable measurement device 20 may further include other components, but it is understood that the portable measurement device 20 is not directly related to the present invention. will be.

5 is a diagram for explaining a hardware configuration of a mobile device to which a portable measurement device according to an embodiment is attached, showing the mobile device 10 of FIG. 4 from a hardware viewpoint.

Referring to the drawings, a mobile device 10 according to one embodiment includes a processor 170, a memory 175, a storage 180, a camera 185, a touch screen 190, an input / output interface 150, And a battery 195. It will be appreciated that the mobile device 10 may further include other components but is not shown to be directly related to the present invention.

The processor 170 may be a central processing unit of the mobile device 10 and may be, for example, an AP (Application Processor) when the mobile device 10 is a smart phone and may execute a program or application loaded in the memory 175 have.

The memory 175 may be implemented as a volatile storage device such as a RAM and an operating system (OS), an application program (application), data, and the like necessary for driving the mobile device 10 may be loaded into the memory 175.

The storage device 180 is a non-volatile storage device that stores data, and may be embodied as a semiconductor memory device, such as a HDD, a flash memory, an SD memory card, etc. In one embodiment, The application unit 120 may be loaded into the memory 175 from the storage device 180 and executed by the processor 170 according to an embodiment of the present invention.

The camera 185 may be, for example, a real camera built in a smart phone. In one embodiment, the application unit 120 may combine the real image captured by the camera 185 with the thermal image generated from the temperature data received from the thermal camera module 210 for the same subject, The thermal distribution of the subject can be expressed more clearly by combining the image and the thermal image.

The touch screen 190 is a means for implementing the functions of the user interface unit 110 and the display unit 130 of FIG. 4, and can receive user commands and display various measurement data to the user.

The battery 195 supplies power necessary for driving the mobile device 10. [ As described above, in one embodiment, the battery 195 may be charged by the battery 285 of the portable measurement device 20 in the charging mode.

6 is a flowchart for explaining an exemplary measurement method using the portable measurement apparatus 20 according to an embodiment.

First, in step S110, the mobile device 10 receives module selection information from the user through the user interface unit 110. [ That is, the user receives which one of the thermal camera module 210, the temperature measurement module 220, the distance measurement module 230, and the emissivity measurement module 240 is to be operated.

When the module selection information is received, the application unit 120 of the mobile device 10 generates a control signal to transmit the control signal to the portable measurement device 20 (step S120). The portable measurement apparatus 20 receives the control signal and selects one or more of the modules 210, 220, 230, and 240 based on the selected control signal to activate the module 210, 220, 230, and 240 (step S130).

Then, in step S140, the activated module generates data. For example, when the thermal camera module 210 is selected, temperature data is generated from infrared energy incident from a subject. When the distance measurement module 230 is selected, measurement data related to the distance to the object is generated.

When the emissivity measuring module 240 is selected, the thermal camera module 210, the temperature measuring module 220 and the distance measuring module 230 are activated to allow the user to infrared-photograph an object and measure the distance between the object temperature and the object So as to obtain measurement data on the temperature and the distance. This will be described later with reference to FIG.

The data generated in step S140 may be transmitted to the mobile device 10 in step S150 and the mobile device 10 may receive the data and transmit the data to the temperature data processing unit 121 of the application unit 120, The data processing unit 123 performs data processing as required (step S160), and then displays the data to the user through the display unit 130 (step S170).

7 is a flowchart of a method of calculating the emissivity by a portable measurement apparatus according to an embodiment.

In step S210, for example, the mobile device 10 receives selection information from the user through the user interface unit 110 to select the emissivity measurement module. When the emissivity measurement module 240 is selected, the controller 270 activates the thermal imaging camera module 210, the temperature measurement module 220, and the distance measurement module 230 to allow the user to take an infrared image of the object, The distance to the object is measured (S220).

For this purpose, it is possible to display a phrase such as "Take an object using a thermal camera" and "Measure distance to an object" on a display (e.g., a display of the mobile device 10) Temperature data and distance data. Direct temperature data for the object can be obtained, for example, using a temperature sensing sensor 223.

When the temperature data (i.e., the temperature data acquired by the thermal imaging camera and the temperature data acquired by the temperature sensor) and the distance data are obtained in step S230, the process proceeds to step S240, Determine the data. For example, in step S240, the atmospheric temperature and the atmospheric permeability can be set, and in one embodiment, the values may be set to a predetermined fixed value or directly input by the user.

Then, in step S250, the emissivity is calculated. In one embodiment, the emissivity is calculated using Equation 1 below.

[Equation 1]

는 방사율, Tx는 대기투과도, 그리고 d는 대상물까지의 거리이다. In the above formula, Etot is the output value of a thermal camera of the temperature of the object, Eatm is converted to the ambient temperature of the camera output value, Etar is temperature measurement of the object in-contact thermometer (for example, temperature sensor 255) Is converted into a camera output value,

Is the emissivity, Tx is the atmospheric permeability, and d is the distance to the object.

Here, Etot , Etar, and d can directly use measured values using the thermal camera, temperature sensor, and distance measurement module through steps S220 and S230, respectively. Eatm and Tx are values You can use a preset value or a user-entered value.

If the emissivity is measured in step S250, the calculated emissivity may be displayed on the display (e.g., a display of the mobile device) to inform the user (S260).

8 and 9, an exemplary configuration of the portable measurement apparatus 20 according to an embodiment will be described. FIG. 8 is a perspective view showing a combination of a mobile device and a portable measuring device, and FIG. 9 is a rear view of the portable measuring device.

Referring to the drawings, the main body 21 of the portable measurement apparatus 20 has a shape capable of accommodating the mobile device 10. The front portion of the portable measuring device 20 is folded to a depth corresponding to the thickness of the mobile device 10 to form the receiving portion 22 and the frame portion 23 is formed around the receiving portion 22, Accordingly, the mobile device 10 can be inserted into the front surface of the main body of the portable measurement device 20 and be integrally coupled thereto.

As in the illustrated embodiment, the mobile device 10 and the portable measurement device 20 can be connected to each other via a connection terminal 25 such as a USB terminal. It is needless to say that the position and connection manner of the connection terminal 25 may vary depending on the specific product of the mobile device 10.

A hole (24) penetrating the measuring device (20) is formed in the receiving portion (22) of the portable measuring device (20). The holes 24 are formed corresponding to positions of components, buttons, and the like disposed on the rear surface of the mobile device 10, such as the camera 185 of the mobile device 10. [ Therefore, even when the mobile device 10 is coupled to the portable measurement device 20, it is possible to use a camera or a button on the back side of the mobile device 10.

9, an infrared lens 211 and a shutter 212 constituting a part of a thermal camera module of the portable measurement apparatus 20, and a laser transceiver 284 constituting a part of the distance measurement module can be arranged And a battery cover 28 covering a space for accommodating the battery 285 may be located.

The button 27 for opening and closing the shutter 212 and the probe input terminal 221 may be disposed on the side of the portable measurement device 20. [ In one embodiment, the button 27 is mechanically connected to the shutter 212 so that the shutter 212 is configured to close when the button 27 is depressed. The probe input terminal 221 is an input terminal for receiving a probe for temperature measurement.

The portable measurement device 20 shown in Figs. 8 and 9 is merely a concrete implementation example of the portable measurement device described with reference to Figs. 2 and 3. The portable measurement device 20 according to the product type of the mobile device 10, It is of course possible to change the shape of the body 20. The positions and shapes of the holes 24 and the positions and the shapes of the laser transceivers and the positions and shapes of the buttons 27 and the positions of the probe input terminals 221 Arrangements and the like may be modified.

The embodiments of the present invention have been described with reference to the drawings. However, those skilled in the art will appreciate that various modifications and changes may be made thereto without departing from the spirit and scope of the present invention as defined by the appended claims. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the scope of the appended claims, as well as the appended claims.

10: Mobile device
20: Portable measuring instrument
30: Probe
110: user interface section
120:
130:
140:
150, and 275: Input /
210: Thermal camera module
220: Temperature measurement module
230: Distance measurement module
240: Emissivity measuring module
270:

Claims (10)

A portable measuring device detachable to a mobile device,
A thermal camera module for generating temperature data of a subject;
An emissivity measuring module for measuring the infrared emissivity of the subject;
A temperature measurement module for measuring the temperature of the subject;
A distance measurement module for measuring the distance to the subject;
An input / output interface for receiving a control signal from the mobile device and transmitting output data of the thermal camera module to the mobile device; And
And a control unit for controlling the operation of the thermal imaging camera module based on the control signal received from the mobile device,
The emissivity measuring module may be configured to measure temperature information ( Etot ) measured by the thermal imaging camera module, temperature information ( Etar ) measured by the temperature measuring module, atmospheric temperature ( Eatm ), atmospheric transmittance, The infrared ray emissivity of the subject can be calculated based on the distance information d thus measured,
At this time, the atmospheric temperature Eatm and the atmospheric permeability may be set to a preset value or a value input by the user,
The infrared emissivity, the thermal camera module temperature information (Etot) measured and the atmospheric temperature (Eatm) proportional to the sum, and the atmospheric temperature (Eatm) and wherein the temperature information (Etar) measuring the temperature measuring modules Difference, atmospheric transmittance, and distance information (d), respectively. The thermal imaging camera module according to claim 1,
An infrared lens for passing infrared light;
A detector for detecting infrared rays incident on the infrared lens and converting the detected infrared rays into an electric signal;
An analog-to-digital converter for converting the electrical signal into a digital signal; And
And a signal processing unit for performing nonuniformity correction (NUC) on temperature data, which is the converted digital signal, based on a predetermined offset table. The thermal imaging camera module according to claim 2,
A shutter capable of blocking infrared rays incident on the detector; And
Further comprising: a button protruding from an outer surface of the portable measurement apparatus,
Wherein the button is mechanically connected to the shutter so that the shutter is closed when the button is pressed. The method of claim 3,
The thermal imaging camera module further includes a sensor unit for detecting the closing of the shutter,
Wherein the signal processing unit updates the offset table to the temperature data generated when the shutter unit is closed when the sensor unit detects that the shutter is closed. delete delete A method of measuring by a portable measuring device detachable to a mobile device,
A control unit of the portable measurement device includes a thermal camera module for generating temperature data of a subject based on a control signal received from the mobile device; An emissivity measuring module for measuring the infrared emissivity of the subject; A temperature measurement module for measuring the temperature of the subject; And a distance measurement module for measuring a distance to the subject; Selecting and activating one of the modules;
Generating an activated module data; And
And transmitting the generated data to the mobile device through the input / output interface unit of the portable measurement device,
The emissivity measuring module may determine temperature information ( Etot ) measured by the thermal imaging camera module, temperature information ( Etar ) measured by the temperature measuring module, ambient temperature Calculating an infrared emissivity of the subject based on the distance information ( Eatm ), the atmospheric transmittance, and the distance information (d) measured by the distance measurement module,
At this time, the atmospheric temperature Eatm and the atmospheric permeability may be set to a preset value or a value input by the user,
The infrared emissivity, the thermal camera module temperature information (Etot) measured and the atmospheric temperature (Eatm) proportional to the sum, and the atmospheric temperature (Eatm) and wherein the temperature information (Etar) measuring the temperature measuring modules Difference, atmospheric transmittance, and distance information (d), respectively. 8. The method of claim 7, wherein if the activated module is a thermal camera module,
Wherein the step of the activated module generating data comprises:
Detecting infrared rays incident on the thermal imaging camera module and converting the detected infrared rays into electrical signals;
Converting the electrical signal into a digital signal; And
And performing nonuniformity correction (NUC) on temperature data, which is the converted digital signal, based on a predetermined offset table.

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