Improved handheld temperature measuring gun
By introducing a movable temperature measuring chamber and an inertial measurement unit into the handheld temperature gun, combined with an image acquisition module and a laser sight, the problem of accurate aiming of the temperature gun in complex environments in the existing technology is solved, and efficient and reliable temperature measurement results are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANCHENG KECHENG OPTOELECTRONICS TECH
- Filing Date
- 2025-09-03
- Publication Date
- 2026-06-12
AI Technical Summary
Existing handheld temperature guns are difficult to quickly and accurately align with the center of the object being measured in complex environments. They are affected by shaking and positional changes, resulting in insensitive temperature measurement and errors.
The system employs a movable temperature measurement chamber and an inertial measurement unit combined with an image acquisition module. Through the combination of a laser aiming device and an infrared rangefinder, dynamic calibration and real-time image-assisted aiming are achieved. Combined with data processing from the inertial measurement unit and the image acquisition module, the accuracy of the temperature measurement process is ensured.
The device's aiming and anti-interference capabilities have been improved in complex environments, ensuring the accuracy and reliability of the temperature measurement process and reducing temperature measurement errors.
Smart Images

Figure CN224353936U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of temperature measuring equipment, and in particular to an improved handheld temperature measuring gun. Background Technology
[0002] Handheld laser temperature guns are convenient and efficient for temperature detection. They are currently widely used in smelting, kitchens, hospitals, and epidemic prevention. During detection, simply pointing the probe at a heat-sensitive object or other easily detectable area allows for rapid measurement. However, current temperature guns still have the following technical problems: when aiming at the object being measured, the position needs to be repeatedly moved to obtain accurate temperature values. During measurement, the gun is affected by complex environmental parameters such as vibration and positional changes, making it difficult to quickly and consistently focus on the center of the object's temperature-sensing area. This affects the temperature measurement, leading to insensitive sensing and errors in target acquisition. Utility Model Content
[0003] The purpose of this invention is to provide an improved handheld temperature gun, which has the advantages of being easy to operate, effectively improving the equipment's aiming and anti-interference capabilities in complex environments, and ensuring the accuracy and reliability of the temperature measurement process.
[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an improved handheld temperature measuring gun, comprising a temperature measuring gun head and a handheld handle, wherein the temperature measuring gun head is provided with an infrared temperature measuring module, a laser sight, an infrared rangefinder block, a display screen block, and a main control block, and the handheld handle is provided with a battery block and a trigger button block, characterized in that: the end of the temperature measuring gun head is provided with a movable temperature measuring chamber, a temperature measuring block is movably connected inside the movable temperature measuring chamber, the infrared temperature measuring module is installed inside the temperature measuring block, the temperature measuring block is slidably sleeved with the movable temperature measuring chamber, and the end of the opening of the movable temperature measuring chamber is provided with a stepped groove, and multiple [unclear text - possibly related to a series of grooves or markings] are provided along its circumference on the stepped groove. A mounting slot is provided, in which the laser sight and the infrared ranging block are embedded. The end of the temperature measuring block is also provided with a stepped block that cooperates with the stepped slot. Multiple through holes for the laser sight to pass through are provided on the stepped block. The inside of the temperature measuring gun head also integrates an image acquisition module and an inertial measurement unit. The image acquisition module includes a fixed video acquisition head and a movable video acquisition head. The fixed video acquisition head is set at the end of the temperature measuring gun head, and the movable video acquisition head is set at the end of the temperature measuring block. The infrared temperature measuring module, the laser sight, the infrared ranging block, the display block, the image acquisition module, and the inertial measurement unit are all electrically connected to the main control board.
[0005] Preferably, the bottom of the movable temperature measuring chamber is provided with a measuring groove, and the bottom of the temperature measuring block is provided with a measuring guide block that slides and cooperates with the temperature measuring groove.
[0006] Preferably, the step block is further provided with a plurality of corner reflectors aligned with the infrared ranging block on the side near the step groove.
[0007] Preferably, a light-shielding cover is slidably connected to the side of the temperature measuring gun head.
[0008] Preferably, the display panel is a touch display.
[0009] Preferably, the hand grip has multiple anti-slip protrusions.
[0010] In summary, this utility model has the following beneficial effects:
[0011] 1. The precise position adjustment of the movable temperature measuring block enables dynamic calibration and temperature measurement of the object under test while maintaining a relatively stable handheld grip. This allows for the acquisition of multiple sets of temperature parameters under controllable variable conditions. Simultaneously, the combination of real-time image-assisted aiming mode and laser aiming provides focused imaging, intuitively displaying the actual measurement area of the object under test. This helps solve the parallax problem of traditional laser point aiming, effectively ensuring efficient focused temperature measurement and reliable temperature data. Attached Figure Description
[0012] Figure 1 This is a schematic diagram illustrating the external structure of the temperature measuring gun in the embodiment;
[0013] Figure 2 This is a cross-sectional view of the internal structure of the temperature measuring gun in the embodiment;
[0014] Figure 3 This is a schematic diagram used to show the position of the display block in the embodiment;
[0015] Figure 4 This is a schematic diagram used to illustrate the active state of the temperature measuring block in the embodiment.
[0016] Reference numerals: 1. Temperature measuring gun head; 2. Hand grip; 3. Infrared temperature measuring module; 4. Laser sight; 5. Infrared rangefinder block; 6. Display screen block; 7. Main control panel; 8. Battery block; 9. Trigger button block; 10. Movable temperature measuring chamber; 11. Temperature measuring block; 12. Step groove; 13. Mounting groove; 14. Step block; 15. Through hole; 16. Fixed video acquisition head; 17. Movable video acquisition head; 18. Measuring slide; 19. Measuring guide block; 20. Corner reflector; 21. Light shield cover; 22. Anti-slip protrusions. Detailed Implementation
[0017] The present invention will be further described in detail below with reference to the accompanying drawings.
[0018] Example: An improved handheld temperature gun, such as Figure 1 and Figure 2As shown, it includes a temperature measuring gun head 1 and a hand grip 2. The user holds the hand grip 2 to aim the temperature measuring gun head 1 at the object to be measured. The hand grip 2 is provided with multiple anti-slip protrusions 22 (such as...). Figure 3 As shown in the figure, this ensures the stability of the relative position during handheld operation and reduces human error in measurement parameters caused by handheld instability.
[0019] The temperature measuring gun head 1 is equipped with an infrared temperature measuring module 3, a laser sight 4, an infrared rangefinder block 5, a display screen block 6, and a main control block 7. The handgrip 2 is equipped with a battery block 8 and a trigger button block 9. The end of the temperature measuring gun head 1 is equipped with a movable temperature measuring chamber 10. A temperature measuring block 11 is movably connected inside the movable temperature measuring chamber 10. The infrared temperature measuring module 3 is installed inside the temperature measuring block 11. The temperature measuring block 11 is slidably fitted with the movable temperature measuring chamber 10. The bottom of the movable temperature measuring chamber 10 is equipped with a measuring groove 18. The bottom of the temperature measuring block 11 is equipped with a measuring guide block 19 that slides and cooperates with the temperature measuring groove, so that the temperature measuring block 11 always slides along the groove of the temperature measuring groove, thereby driving the dynamic temperature measuring action of the infrared temperature measuring module 3.
[0020] like Figure 2 and 4 As shown, the movable temperature measuring chamber 10 has a stepped groove 12 at the end of the chamber opening. Multiple mounting grooves 13 are provided along the circumference of the stepped groove 12. The laser aiming device 4 and the infrared ranging block 5 are embedded in the mounting groove 13. The end of the temperature measuring block 11 is also provided with a stepped block 14 that cooperates with the stepped groove 12. Multiple through holes 15 are provided on the stepped block 14 for the laser aiming device 4 to pass through, so that the laser of the laser aiming device 4 always passes through the through holes 15 when measuring temperature.
[0021] During initial temperature measurement, the temperature measuring block 11 retracts into the movable temperature measuring chamber 10. At this time, the user initiates the initial temperature measurement by pressing the trigger button block 9, and the laser sight 4 completes the alignment and pre-focusing of a local area on the surface of the object to be measured. Considering the correction compensation and rapid focusing during real-time temperature measurement, the temperature measuring gun head 1 also integrates an image acquisition module and an inertial measurement unit, an infrared temperature measuring module 3, a laser sight 4, an infrared ranging block 5, and a display screen block 6 (such as...). Figure 3As shown), the image acquisition module and the inertial measurement unit are both electrically connected to the main control board 7. The image acquisition module includes a fixed video acquisition head 16 and a movable video acquisition head 17. The fixed video acquisition head 16 is located at the end of the temperature measuring gun head 1, and the movable video acquisition head 17 is located at the end of the temperature measuring block 11. When the temperature measuring block 11 is not extended, only the fixed video acquisition head 16 performs long-distance image acquisition, acquiring real-time images of the local temperature measuring area of the object under test. After being transmitted to the main control board 7, the data is integrated and processed by the main control board 7 and fed back to the display screen block 6. The display screen block 6 displays the real-time image captured by the camera, and simultaneously displays the measured target temperature value on the screen. A dynamically movable aiming frame is marked by multiple circumferentially distributed laser sights 4. This aiming frame is precisely matched with the actual position and size of the infrared spot through an algorithm. Combining the traditional laser point aiming mode and the real-time image-assisted aiming mode, the temperature measurement focusing efficiency is improved, effectively assisting the user in observing the display screen block 6 to determine the temperature measurement focusing position and reducing parallax. The inertial measurement unit includes an accelerometer and a gyroscope, which can also measure the position and stability of the temperature measuring instrument in real time and transmit it to the main control board 7 to ensure that the environmental variables of multiple temperature measurement actions are controllable and consistently stable.
[0022] After the initial temperature measurement is completed and the temperature value is obtained, in order to further improve the stability and reliability of the temperature measurement action, the user can manually pull out the temperature measuring block 11, so that part of the temperature measuring block 11 extends out of the movable temperature measuring chamber 10. At this time, the movable video acquisition head 17 extends out and is powered on. The external image of the object to be measured in the specified position after the temperature measuring block 11 is extended is transmitted to the main control board 7 in real time. The main control board 7 compares and processes the image parameters obtained by the initially fixed video acquisition head 16, and performs timely calibration to reduce the possible deviation in the focusing position of the temperature measurement accuracy caused by hand tremors and instrument movement. At the same time, the infrared ranging block 5 works synchronously. On the side of the step block 14 near the step groove 12, there are also multiple corner reflectors 20 that are aligned with the infrared ranging block 5 to improve the infrared ranging reflection accuracy. The infrared ranging block 5 can acquire the relative extension displacement distance of the temperature measuring block 11 in real time, and mark the temperature parameters measured in the dynamic extension and retraction position of the temperature measuring block 11. This helps the user to obtain the average value of multiple dynamically changing temperature values and the corresponding optimal temperature measuring position after taking multiple sets of active temperature measuring actions. Finally, the values are displayed on the display block 6, which is a touch screen display, making it convenient for the user to operate intelligently and manually.
[0023] The side of the temperature measuring gun head 1 is also slidably connected to a light-shielding cover 21, which can ensure the stable light transmission and focusing effect of the equipment in complex lighting environments, and improve the accuracy of the actual temperature measurement value and the efficiency of the temperature measurement process.
[0024] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. An improved handheld temperature measuring gun, comprising a temperature measuring gun head (1) and a handheld handle (2), wherein the temperature measuring gun head (1) is provided with an infrared temperature measuring module (3), a laser sight (4), an infrared rangefinder (5), a display screen (6), and a main control panel (7), and the handheld handle (2) is provided with a battery block (8) and a trigger button block (9), characterized in that: The end of the temperature measuring gun head (1) is provided with a movable temperature measuring chamber (10), and a temperature measuring block (11) is movably connected inside the movable temperature measuring chamber (10). The infrared temperature measuring module (3) is installed inside the temperature measuring block (11). The temperature measuring block (11) and the movable temperature measuring chamber (10) are slidably connected. The end of the opening of the movable temperature measuring chamber (10) is provided with a stepped groove (12). Multiple mounting grooves (13) are provided along the circumference of the stepped groove (12). The laser sight (4) and the infrared ranging block (5) are embedded in the mounting grooves (13). The end of the temperature measuring block (11) is also provided with a stepped block (14) that cooperates with the stepped groove (12). The stepped block (14) is provided with multiple through holes (15) for the laser sight (4) to pass through. The temperature measuring gun head (1) is also integrated with an image acquisition module and an inertial measurement unit. The image acquisition module includes a fixed video acquisition head (16) and a movable video acquisition head (17). The fixed video acquisition head (16) is located at the end of the temperature measuring gun head (1), and the movable video acquisition head (17) is located at the end of the temperature measuring block (11). The infrared temperature measuring module (3), the laser sight (4), the infrared ranging block (5), the display block (6), the image acquisition module and the inertial measurement unit are all electrically connected to the main control block (7).
2. An improved handheld temperature measuring gun according to claim 1, characterized in that: The bottom of the movable temperature measuring chamber (10) is provided with a measuring groove (18), and the bottom of the temperature measuring block (11) is provided with a measuring guide block (19) that slides and cooperates with the temperature measuring groove.
3. An improved handheld temperature measuring gun according to claim 1, characterized in that: The step block (14) is also provided with a plurality of corner reflectors (20) that are aligned with the infrared ranging block (5) on the side near the step groove (12).
4. An improved handheld temperature measuring gun according to claim 1, characterized in that: The side of the temperature measuring gun head (1) is also slidably connected to a light shield (21).
5. An improved handheld temperature measuring gun according to claim 1, characterized in that: The display panel (6) is a touch screen.
6. An improved handheld temperature measuring gun according to claim 1, characterized in that: The hand grip (2) is provided with multiple anti-slip protrusions (22).