Patent Publication Number: US-2019197749-A1

Title: Method of Displaying Object Temperature

Description:
NOTICE OF COPYRIGHT 
     A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to any reproduction by anyone of the patent disclosure, as it appears in the United States Patent and Trademark Office patent files or records, but otherwise reserves all copyright rights whatsoever. 
     BACKGROUND OF THE PRESENT INVENTION 
     Field of Invention 
     The invention relates to a method of displaying a temperature of an object. 
     Description of Related Arts 
     Conventional temperature measuring devices include typical thermometer, infrared thermometer and thermal lens. In these devices, the typical thermometer responses very slow and must contacts human&#39;s body. The infrared thermometer can measure only a point. The thermal lens can measure a predetermined view angle range. 
     SUMMARY OF THE PRESENT INVENTION 
     An object of the invention is to provide a method of displaying a temperature of an object. An image and a thermal image of a real scene are captured, and a basis temperature is preset. The thermal image is calculated to obtain a temperature value for each point of the thermal image. The temperature value exceeding the basis temperature and the image of the real scene are displayed on the display unit. 
     The invention also provides a method for displaying a temperature value. The method of the invention includes the following steps: providing a wearable device comprising an image capturing unit, a thermal sensing device and a display unit, wherein a basis temperature is preset; capturing an image through the image capturing device; capturing a thermal image through the thermal sensing device; regulating the thermal image to a size identical to a size of the image through a scaling algorithm; overlapping the thermal image to the image through an image overlapping algorithm; calculating a value of a temperature for each point of the thermal image through a temperature calculation algorithm; displaying a value of the temperature exceeding the basis temperature, illustrating the value of the temperature on the position wherein the temperature occurs and illustrating the overlapped image; regulating the thermal image to a size identical to a real scene through a scaling algorithm; overlapping the thermal image to the real scene through an image overlapping algorithm; removing the thermal image; and displaying the value of the temperature on the display unit. 
     A temperature of a person or an object exceeding a basis temperature is measured and displayed in a real time through the method of the invention. The method of the invention can be applied to quarantine, fire accident preventing or industry. 
     A detailed description is given in the following embodiments with reference to the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein: 
         FIG. 1  is a block diagram of a wearable device capable of displaying an object temperature utilizing a method of the invention; and 
         FIG. 2  is a flow chart of an embodiment of a method for displaying an object temperature of the invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The following description is of the best-contemplated mode of carrying out the invention. This description is made for the purpose of illustrating the general principles of the invention and should not be taken in a limiting sense. The scope of the invention is best determined by reference to the appended claims. 
     Referring to  FIG. 1 , a wearable device  100  capable of displaying a temperature of an object of the invention includes a camera  10 , an image capturing unit  20 , a thermal camera  30 , a thermal sensing device  32 , a central processing unit  40  and a display unit  50 . The camera  10  is configured to receive external light to form an image. The image capturing unit  20  is configured to capture the image. In this embodiment, the image capturing unit  20  is a charge-coupled device (CCD) or complementary metal-oxide-semiconductor (CMOS) photo-sensing element. The central processing unit  40  is configured to receive the image. The thermal camera  30  receives the external light to form a thermal image. The thermal sensing device  32  is configured to receive the thermal image to generate temperature information. A user can preset a basis temperature. The central processing unit  40  is configured to receive the image and the thermal image, overlaps the image and the thermal image, calculates the temperature for each point of the thermal image and compares the calculated temperature with the basis temperature. The display unit  50  is connected to the central processing unit  40 . The central processing unit  40  transmits the value of the temperature to the display unit  50  to display the value of the temperature exceeding the basis temperature. In this embodiment, the display unit  50  is a transparent display device. A user can see a real scene through the display unit  50 . The temperature value is shown on display device  50  and located in a position where the temperature occurs in the real scene to be viewed by the user. 
     In addition, the wearable device  100  of the invention further includes a control board  60  through which the image and the thermal image are transmitted to the central processing unit  40 . The control board  60  drives the image capturing unit  20  and the thermal sensing device  32 . 
     The wearable device  100  of the invention further includes a power source  80  connected to the central processing unit  40 . In this embodiment, the power source  80  is a battery. In another embodiment, the wearable device  100  of the invention further includes a power control board  90  coupled to the central processing unit  40 . An external power source provides power for the wearable device  100  or charges the power source  80  through the power control board  90 . 
     The wearable device  100  of the invention further includes a wireless transceiver  110  connected to the central processing unit  40 . The central processing unit  40  transmits the value of the temperature to a control system through the wireless transceiver  110 . 
     Referring to  FIG. 2 , an embodiment of a method for displaying an object temperature of the invention is disclosed. In a step S 1 , a wearable device is provided. The wearable device includes an image capturing device, a thermal sensing device and a display unit, and a basis temperature can be preset by a user in the wearable device  100 . The procedure enters a step S 2 . In the step S 2 , an image is captured through the image capturing device. The procedure enters a step S 3 . In the step S 3 , a thermal image is captured through the thermal sensing device. The procedure enters a step S 4 . In the step S 4 , the thermal image is regulated to a size identical to a size of the image through a scaling algorithm. The procedure enters a step S 5 . In the step S 5 , the thermal image is overlapped to the image through an image overlapping algorithm. The procedure enters a step S 6 . In the step S 6 , a value of the temperature in the thermal image is calculated through a temperature calculation algorithm. The procedure enters a step S 7 . In the step S 7 , the value of the temperature is compared with the basis temperature and the value of the temperature exceeding the basis temperature is illustrated on the position where he temperature occurs. The procedure enters a step S 8 . In the step S 8 , the thermal image is regulated to a size identical to a real scene through a scaling algorithm. The procedure enters a step S 9 . In the step S 9 , the thermal image is overlapped to the real scene through an image overlapping algorithm. The procedure enters a step S 10 . In the step S 10 , the thermal image is removed, but the value of the temperature and the real scene are remained. The procedure enters a step S 11 . In the step S 11 , the value of the temperature is displayed on the display unit. 
     A temperature of a thermal image is measured and displayed in a real time through the method of the invention. The method of the invention can be applied to quarantine, fire accident preventing or industry. 
     While the invention has been described by way of example and in terms of preferred embodiment, it is to be understood that the invention is not limited thereto. To the contrary, it is intended to cover various modifications and similar arrangements (as would be apparent to those skilled in the art). Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.